Technical Field
[0001] This disclosure relates to the field barrel mixers for mixing cement, and in particular
to mountable barrel mixers and more particularly to tiltable barrel mixers.
Background
[0002] Barrel mixers are used to mix materials such as cement, concrete, mortar, render
and other similar materials. Barrel mixers may be used either in producing batches
of mixed material or in producing continuous amounts of mixed material.
[0003] Barrel mixers may have different types. One type of a barrel mixer is mounted so
as to be tiltable between a mixing position and a tipping position. The barrel mixer
can have an ability for the tilt angle to be fixed at a position between the mixing
and tipping positions.
[0004] Barrel mixers may have a support base on which it is tiltable. The support base may
have wheels for ease of movement of the barrel mixer. The barrel mixer may be attached
to the base which prevents dismantling into component parts. The barrel mixer may
be detachable from the support base which allows for dismantling into component parts
for easy transportation.
[0005] EP1332853 discloses a barrel mixer comprising a support for a rotary mixer barrel having a
tipping arrangement. The barrel mixer can be tilted between a mixing position in which
the barrel is angled so as to retain its contents and a pouring position in which
the barrel is angled so that its contents are poured out. The tipping arrangement
has a first and second limiting stops that are provided to limit the movement of the
barrel between the mixing and pouring positions.
[0006] The barrel mixer also has a motor and transmission mounted on the support for rotating
the barrel, and includes a step-down gearing positioned between the motor and the
barrel. The motor and the associated gearing can be tilted along with the barrel.
[0007] The support comprises a wheeled trolley and a stand with a pintle bearing that can
receive the wheeled trolley. The pintle bearing permits the support to be tipped on
the pintle bearing between the mixing position and the pouring position.
[0008] US 6 921 189 B2 discloses a barrel mixer according to the preamble of claim 1.
[0009] The present disclosure is directed, at least in part, to improving or overcoming
one or more aspects of the prior art system.
Brief Summary of the Invention
[0010] In a first aspect, the present disclosure describes a barrel mixer comprising: a
barrel; a frame for removably supporting the barrel, the frame having a handle portion
and a base; a pivot member pivotably coupled to the base for movement of the barrel
between a mixing position and a pouring position about a rotation axis relative to
the pivot member, the pivot member having a pivot mounting element; and a stand for
supporting the frame, the stand having a stand mounting element (26) for detachable
coupling with the pivot mounting element, the rotation axis (B) being spaced from
the pivot mounting element.
[0011] A barrel mixer according to the present invention is defined in appended claim 1.
[0012] In a second aspect, the present disclosure describes a method.
Brief Description of the Drawings
[0013] The foregoing and other features and advantages of the present disclosure will be
more fully understood from the following description of various embodiments, when
read together with the accompanying drawings, in which:
Fig. 1 is a front view of a barrel mixer according to the present disclosure;
Fig. 2 is a isometric view of the barrel mixer of Fig. 1;
Fig. 3 is a side view of a frame supporting a rotary mixer barrel of the barrel mixer
of Fig. 1;
Fig. 4 is a plane view of a frame supporting a rotary mixer barrel of the barrel mixer
of Fig. 1;
Fig. 5 is a cross-sectional view of a pivot member coupled to a wheel assembly of
the barrel mixer of Fig. 1;
Fig. 6 is a side view of a stand of the barrel mixer of Fig. 1;
Fig. 7 is a plan view of a stand of the barrel mixer of Fig. 1;
Fig. 8 is a side view of the barrel mixer at a mixing position (solid lines) and at
a pouring position (dashes);
Fig. 9 is a front view of the barrel mixer in a pouring position with the base positioned
away from the pivot member;
Fig. 10 is a schematic view of a motor and a transmission system to rotate the barrel
of the barrel mixer; and
Fig. 11 is a side view of a casing for the motor and transmission system of Fig. 9.
Detailed Description
[0014] This disclosure generally relates to a barrel mixer
10. The barrel mixer
10 may be adjusted so as to be inclined between a mixing position and a pouring position.
[0015] Fig. 1 illustrates a barrel mixer
10. The barrel mixer
10 comprises a barrel
12. Barrel
12 may have a body
38 and a mouth
40. Body
38 is cylindrical. Mouth
40 is positioned at an end of the body
38. Mouth
40 is open for receiving component materials and for permitting mixed materials to be
poured out. Mouth
40 has a diameter that is smaller than the diameter of the body
38. Barrel
12 may be a rotary mixer barrel that is driven by a motor (not shown).
[0016] With respect to figure 2, the barrel mixer
10 comprises a frame
14. The barrel
12 is removably supported on the frame
14. The barrel
12 may be mounted onto the frame
14 for operation and demounted for transportation. Barrel
12 may be rotatably supported on the frame
14. With respect to fig. 3, barrel
12 may be rotatably supported on the frame
14 so as to rotate about a rotary mixing axis
A. The barrel
12 may be rotated manually or by a motor.
[0017] With respect to figs. 2 and 3, the frame
14 has a handle portion
16 and a base
18. Handle portion
16 may have handles
15 for manual control of the barrel mixer
10. Base
18 may be provide with wheels
19 and frame legs
23. Frame legs
23 may be spaced from the wheels
19. Opposite sides of the base
18 is provided with a respective wheel
19 and a frame leg
23. Frame
14 may be in a form of a trolley.
[0018] Frame
14 has a body portion
17 positioned between the handle portion
16 and the base
18. Body portion
17 is inclined relative to the base
18. Body portion
17 is inclined away from the base
18. Base
18 may be U shaped. In an embodiment, base
18 may be formed form a single tube formed into a U shaped structure. Base
18 comprises a beam
25 and arms
27. The beam
25 connects to ends of the arms
27. At respective opposite ends, each arm
27 is connected to the body portion
17. In an embodiment, body portion
17 comprises spaced apart tubes
29. Each spaced apart tube
29 of the body portion
17 is connected to a respective arm
27 of base
18.
[0019] With respect to fig. 3, handle portion
16 may be comprised of tubes wherein each tube has a handle
15 and a connection end
31. The handle portion
16 may be substantially L-shaped wherein the handles
15 are substantially perpendicular to the connection ends
31. Connection ends
31 are mounted to the body portion
17. Connection ends
31 are mounted to the body portion
17 at a plurality of engagement points on the body portion
17. The distance of the handles
15 from the body portion
17 may be varied by the selection of a suitable engagement point thereon. Connection
ends
31 are linearly aligned with the body portion
17. Handles
15 are inclined relative to the body portion
17. In an embodiment, handles
15 are substantially perpendicular to the body portion
17.
[0020] Barrel
12 is removably mounted to the frame
14 at the body portion
17. Barrel
12 is positioned at the body portion
17 so as to be suspended over the base
18. End of body
38 opposite mouth
40 is coupled to the body portion
17. Mouth
40 is located over the base
18. Position of barrel
12 is fixed relative to the base
18.
[0021] Rotation axis
A of barrel
12 is substantially perpendicular to the body portion
17. Rotation axis
A of barrel
12 is inclined relative to the base
18. Rotation axis
A of barrel
12 is inclined away from the base
18. Position and angle of inclination of rotation axis
A is fixed relative to the base
18.
[0022] With reference to fig. 2, body portion
17 has a panel
21 for removable mounting of the barrel
12. In an embodiment, panel
21 is positioned between the tubes
29 forming the body portion
17. Panel
21 may be positioned between the barrel
12 and the transmission system (not shown). The transmission system and the motor may
be encompassed within a cover
42.
[0023] With respect to figs. 4 and 5, barrel mixer
10 has a pivot member
20. The pivot member
20 is pivotably coupled to the base
18. Pivot member
20 is pivotably coupled to the base
18 so as to enable the movement of the barrel
12 between a mixing position and a pouring position relative to the pivot member
20. The barrel
12 undergoes a rotational movement between the mixing position and the pouring position
relative to the pivot member
20. Barrel
12 moves along an arc when travelling between the mixing position and the pouring position
relative to the pivot member
20.
[0024] Barrel
12 is movable about the rotation axis
B. Barrel
12 is movable about the rotation axis
B when travelling between the mixing position and the pouring position. The rotation
axis
B is perpendicular to the rotary mixing axis
A. Rotation axis
B is positioned transverse to the plane of movement of the barrel
12.
[0025] Barrel mixer
10 comprising a hinge coupling
28 between the pivot member
20 and the base
18. The rotation axis
B extends through the hinge coupling
28. Barrel
12 is rotatable along the direction in which the pivot member
20 is rotatable. Rotation of pivot member
20 relative to the base
18 enables the movement of the barrel
12 between the mixing position and the pouring position.
[0026] In an embodiment, the hinge coupling
28 comprises a strut
32. The base
18 has the strut
32 extending transversely across. Strut
32 is rigidly fixed to the base
18. Pivot member
20 is pivotably coupled to the strut
32. Pivot member
20 is rotatable about strut
32. Rotation axis
B may extend through the strut
32. In an embodiment, strut
32 extends between arms
27. Strut
32 is perpendicular to the arms
27. Pivot member
20 is rotatable between the arms
27. Strut
32 is spaced from beam
25. Strut
32 is parallel to the beam
25. Strut
32 is positioned between the frame legs
23 and the beam
25. Pivot member
20 is within the space provided between the arms
27 and the beam
25.
[0027] Hinge coupling
28 comprises at least one ring
34 rotatably coupled to the strut
32 and rigidly fixed to the pivot member
20. Ring
34 is positioned on an edge of the pivot member
20. The pivot member
20 comprises at least two rings
34 rotatably connected to the strut
32.
[0028] With reference to Fig. 5, the pivot member
20 comprises a pivot plate
30. The pivot plate
30 is pivotably coupled to the base
18. The pivot plate
30 is pivotable about the rotation axis
B. The edge of pivot plate
30 is pivotably coupled to the base
18 through the hinge coupling
28. The ring
34 is disposed on the edge of plate
30 for rotatable coupling to the strut
32. In an embodiment, pivot plate
30 is rectangular in shape. Pivot plate
30 is substantially flat.
[0029] In an embodiment, hinge coupling
28 may comprise protrusions from the arms
27 to which the pivot member
20 is coupled. Protrusions may be in mutual alignment on the arms
27. Rotation axis
B may extend through the protrusions.
[0030] With reference to Fig. 4, in an embodiment, the strut
32 extends away from base
18 so as to present free ends on either side of the base
18 for attachment of wheels
19. The strut
32 serves as the axle for the wheeled frame
14. The rotation axis
B extends through the wheels
19.
[0031] With reference to Figs. 4, 5 and 9, barrel mixer
10 further comprises a limit plate
36 rigidly fixed to the base
18 for limiting the movement of the pivot member
20. Limit plate
36 limits the rotational movement of the base
18 relative to the pivot member
20. Limit plate
36 limits the rotational movement of the base
18 relative to the pivot member
20 towards the barrel
12. Limit plate
36 abuts the pivot member
20 thereby preventing further rotational movement of the base
18.
[0032] Limit plate
36 is configured to abut and rest against the pivot plate
30. Limit plate
36 abuts the pivot plate
30 at respective planar sides. Limit plate
36 has a limit surface
46 that abuts an abutment surface
48 of the pivot plate
30.
[0033] Limit plate
36 is positioned on a plane that is substantially parallel to the plane of the base
18. Limit plate
36 is positioned on a plane that is substantially aligned to the rotational axis
B. Limit plate
36 is positioned between the arms
27. Limit plate
36 is rigidly connected to the arms
27. Limit plate
36 is connected at respective opposite sides to brackets
44 that are rigidly joined to the arms
27. Limit plate
36 is spaced from the beam
29. Limit plate
36 is positioned adjacent strut
32.
[0034] In an embodiment, limit plate
36 is rigidly connected to the strut
32. Limit plate
36 is rigidly connected to the strut
32 along a side that is adjacent to the sides connected to the arms
27. Connections of the limit plate
36 to the strut
32 are positioned between the respective arms
27 and the hinge connection
28 of the pivot member
20 and the strut
32.
[0035] In an embodiment, limit plate
36 has a rectangular shape. Limit plate
36 has a dimension that is greater than the dimension of the pivot member
20. Limit plate
36 has a dimension that is greater than the dimension of the pivot plate
30.
[0036] With reference to fig. 4, the pivot member
20 further comprises a pivot mounting element
22. The rotation axis
B is spaced from the pivot mounting element
22. The pivot mounting element
22 is disposed away from the rotation axis
B. The pivot mounting element
22 is positioned away from the hinge coupling
28. The pivot mounting element
22 is positioned away from the strut
32.
[0037] Pivot mounting element
22 is disposed on a resting surface
52 that is the side opposite the abutment surface
48. The pivot mounting element
22 is a projection centrally positioned on the pivot plate
30. Pivot mounting element
22 extends from the pivot plate
30 away from the resting surface
52. Pivot mounting element
22 is circled by positional ring
50. Positional ring
50 extends from the abutment surface
48. Positional ring
50 extends in a direction parallel to the pivot mounting element
22. Pivot mounting element
22 extends to greater length from the pivot plate
30 relative to the positional ring
50.
[0038] In an embodiment, pivot mounting element
22 is a tube extending from the pivot plate
30. Pivot mounting element
22 is perpendicular to the pivot plate
30. Pivot mounting element
22 is perpendicular to the rotation axis
B.
[0039] With reference to figs, 6 and 7, barrel mixer
10 further comprises a stand
24 for supporting the frame
14. The stand
24 has a stand mounting element
26 for detachable coupling with the pivot mounting element
22. Stand
24 further comprises a platform
54 having the stand mounting element
26. Platform
54 engages the pivot member
20. The pivot member
20 rests on the platform
54 when the frame
14 is mounted on the stand
24. Pivot plate
30 is supported by the platform
54. Platform
54 has a support surface
56 for engaging the resting surface
52 of the pivot plate
30. Platform
54 is substantially flat.
[0040] Stand mounting element
26 is positioned in the centre of the platform
54. Stand mounting element
26 is a projection centrally positioned on the pivot plate
30. Stand mounting element
26 extends from the platform
54 away from the support surface
56. Pivot mounting element
22 engages with the stand mounting element
26. Pivot mounting element
22 is insertable into the stand mounting element
26.
[0041] In an embodiment, stand mounting element
26 is a tube extending from the platform
54. Stand mounting element
26 is perpendicular to the platform
54. Stand mounting element
26 is perpendicular to the rotation axis
B.
[0042] Stand mounting element
26 is circled by positional depression
58. Positional depression
58 is formed on the platform
54 and positioned opposite the support surface
56. Positional depression
58 is coaxially positioned relative to the stand mounting element
26. Positional ring
50 engages with the positional depression
58. Positional ring
50 engages into the positional depression
58.
[0043] Stand
24 further comprises stand legs
59. Stand legs
59 are connected to the platform
54. Stand legs
59 are connected to the platform
54 opposite the support surface
56. Stand legs
59 are connected to the platform
54 at the corners thereof. Stand legs
59 are inclined relative to the platform
54. Stand legs
59 are inclined away from the stand mounting element
26.
[0044] With reference to Fig. 8, the barrel
12 is shown in a mixing position represented with solid lines and in a pouring position
represented with dashes. In the pouring position, the barrel
12, frame
14 motor and transmission system enclosed in cover
42 are tilted relative to the stand
24. With reference to Fig. 9, at the pouring position the limit plate
36 is rotated away from the pivot member
20. Pivot plate
30 remains in contact with the stand
24.
[0045] With reference to Fig. 10, the barrel mixer
10 further comprises a motor
60 and transmission system
62 for rotating the barrel
12. The transmission system
62 is interposed between the motor
60 and the barrel
12. The transmission system
62 and the motor
60 are positioned on panel
21. The transmission system
62 and the motor
60 are positioned on the side of panel
21 opposite to the side supporting the barrel
12. The transmission system
62 and the motor
60 are demountable from the panel
21. The demounted transmission system
62 and the motor
60 can be positioned within the barrel
12 for ease of transportation of the barrel mixer
10.
[0046] Transmission system
62 comprises a pulley
64, a first gear
66 and a second gear
68. The first gear
66 may be a pinion and the second gear
68 may be a chain transmission gear ring. Motor
60 may be coaxially aligned to the second gear
68.
[0047] Motor
60 is coupled to the pulley
64. Pulley
64 is driven by the motor
60 via a belt
76. Pulley
64 receives the rotation and force from the motor
60 through the belt
76. This makes possible the easy adjustment of belt
76. The belt
76 may be made from rubber. Vibrations produced by the motor
60 and pulley
64 may be eliminated by rubber belt damping. The force transmission that occurs between
the motor
60, that is fixed on a non-metallic support, and the pulley
64, eliminates possible damage caused by electric shock with the transmission being made
by a rubber belt.
[0048] First gear
66 is connected with the pulley
64. First gear
66 and the pulley
64 rotatable in unison. First gear
66 and pulley
64 rotate together when the first gear
66 is driven by the motor
60 via belt
76.
[0049] The second gear
68 is connected to the axel
72 of the barrel
12. Rotation of the second gear
68 rotates the barrel
12. The diameter of the second gear
68 is increased in order to ensure increased binary force on the barrel. The second
gear
68 transfers force and rotation to the barrel
12, without losses, in the cement mixing time. The diameter of the second gear
68 is greater than the diameter of the first gear
66.
[0050] Second gear
68 is coupled to the first gear
66 by a chain
70. The chain
70 has a tensioning member
78 that ensures the chain
70 is properly tensioned between the first gear
66 and the second gear
68 thereby avoiding losses of force and power. The first gear
66 incorporated on the pulley
64 transmits force via chain
70 to the second gear
68 that makes rotate the barrel
12.
[0051] Second gear
68 is connected to the axel
72 so that the rotation of the second gear
68 rotates the barrel
12. Axel
72 extends through the panel
21 so as to connect the transmission system
62 to the barrel
12. In an embodiment, axel
72 is configured to support and rotate the barrel
12. With reference to Fig. 11, transmission system
62 and the motor
60 may be disposed in a casing
74.
[0052] The transmission system
62 has two transmission systems, one by chain
70 and another by belt
76. Through this dual transmission there is an increase in performance of the barrel
mixer
12 and an increase in safety during use.
[0053] The skilled person would appreciate that foregoing embodiments may be modified or
combined to obtain the barrel mixer
10 of the present disclosure.
Industrial Applicability
[0054] This disclosure describes a barrel mixer
10 for mixing materials such as cement, concrete, mortar, render and other similar materials.
Barrel mixer
10 has a stand
24 which supports the barrel
12 at a height that allows easy access to the mouth
40 of the barrel
12 and enables the barrel
12 to be moved between a mixing position and a pouring position. The rotation of the
barrel
12 occurs along a hinge coupling
28 that is spaced from the mounting of the frame
14 to the stand
24.
[0055] Where technical features mentioned in any claim are followed by reference signs,
the reference signs have been included for the sole purpose of increasing the intelligibility
of the claims and accordingly, neither the reference signs nor their absence have
any limiting effect on the technical features as described above or on the scope of
any claim elements.
[0056] One skilled in the art will realise the disclosure may be embodied in other specific
forms without departing from the disclosure or essential characteristics thereof.
The foregoing embodiments are therefore to be considered in all respects illustrative
rather than limiting of the disclosure described herein.
1. Ein Trommelmischer (10), der Folgendes umfasst:
eine Trommel (12);
ein Gestell (14) zum lösbaren Tragen der Trommel (12), wobei das Gestell (14) einen
Griffteil (16) und eine Basis (18) hat;
ein Drehzapfenglied (20), schwenkbar mit der Basis (18) verbunden zur Bewegung der
Trommel (12) zwischen einer Mischposition und einer Gießposition um eine Drehachse
(B) relativ zum Drehzapfenglied (20), wobei das Drehzapfenglied (20) ein Drehzapfenmontageelement
(22) hat; und
einen Ständer (24) zum Tragen des Gestells (14), wobei der Ständer (24) ein Ständermontageelement
(26) zur lösbaren Kopplung mit dem Drehzapfenmontageelement (22) hat;
wobei die Drehachse (B) vom Drehzapfenmontageelement (22) beabstandet ist, dadurch gekennzeichnet, dass das Drehzapfenglied (20) einen Drehschemel (30) umfasst, der drehbar mit der Basis
(18) gekoppelt ist, wobei der Drehschemel (30) um die Drehachse (B) drehbar ist.
2. Der Trommelmischer (10) gemäß Anspruch 1, der weiter eine Scharnierkopplung (28) zwischen
dem Drehzapfenglied (20) und der Basis (18) umfasst, wobei sich die Drehachse (B)
durch die Scharnierkopplung (28) erstreckt.
3. Der Trommelmischer (10) gemäß Anspruch 1 oder 2, wobei das Gestell Räder (30) umfasst,
die mit der Basis (18) über eine Verstrebung (32) gekoppelt sind, wobei das Drehzapfenglied
(20) drehbar über die Verstrebung (32) mit der Basis (18) gekoppelt ist, wobei die
Drehachse (B) sich durch die Verstrebung (32) erstreckt.
4. Der Trommelmischer (10) gemäß Anspruch 3, wobei das Drehzapfenmontageelement (22)
von der Verstrebung (32) fort positioniert ist.
5. Der Trommelmischer (10) gemäß Anspruch 3 oder 4, wobei das Drehzapfenglied (20) Ringe
(34) umfasst, die drehbar mit der Verstrebung (32) verbunden sind.
6. Der Trommelmischer (10) gemäß einem beliebigen der obigen Ansprüche, der weiter eine
Begrenzungsplatte (36) umfasst, die starr an der Basis (18) befestigt ist, um die
Bewegung des Drehzapfenglieds (20) zu begrenzen.
7. Der Trommelmischer (10) gemäß einem beliebigen der obigen Ansprüche, wobei der Rand
des Drehschemels (30) schwenkbar mit der Basis (18) gekoppelt ist.
8. Der Trommelmischer (10) gemäß einem beliebigen der obigen Ansprüche, wobei das Drehzapfenmontageelement
(22) eine Projektion ist, die zentral auf den Drehschemel (30) positioniert ist.
9. Der Trommelmischer (10) gemäß einem beliebigen der obigen Ansprüche, wobei die Drehachse
(B) quer zur Bewegungsebene der Trommel (12) positioniert ist.
10. Der Trommelmischer (10) gemäß einem beliebigen der obigen Ansprüche, der weiter einen
Motor (60) umfasst, welcher mit der Trommel (12) über ein Übertragungssystem (62)
gekoppelt ist, wobei das Übertragungssystem (62) Folgendes umfasst:
eine Riemenscheibe (64), die mit dem Motor (60) über einen Riemen (76) gekoppelt ist;
ein erstes Zahnrad (66), das mit der Riemenscheibe (64) verbunden ist; und
ein zweites Zahnrad (68), das mit dem ersten Zahnrad (66) über eine Kette (70) gekoppelt
ist, wobei das zweite Zahnrad (68) mit der Trommel (12) verbunden ist, wobei die Trommel
(12) durch den Motor (60) über das Übertragungssystem (62) drehbar ist.
11. Der Trommelmischer (10) gemäß Anspruch 10, wobei der Riemen (76) aus Gummi besteht.
12. Der Trommelmischer (10) gemäß Anspruch 10 oder 11, wobei der Motor (60) koaxial mit
dem zweiten Zahnrad (68) ausgerichtet ist.
1. Mélangeur à tambour (10) comprenant :
un tambour (12) ;
un châssis (14) destiné à supporter de manière amovible le tambour (12), le châssis
(14) comportant une partie de poignée (16) et une base (18) ;
un organe formant pivot (20) accouplé de façon pivotante à la base (18) pour le mouvement
du tambour (12) entre une position de mélangeage et une position de coulage autour
d'un axe de rotation (B) par rapport à l'organe formant pivot (20), l'organe formant
pivot (20) comportant un élément de montage de pivot (22) ; et
un support (24) destiné à supporter le châssis (14), le support (24) comportant un
élément de montage de support (26) destiné à s'accoupler de manière détachable avec
l'élément de montage de pivot (22),
dans lequel l'axe de rotation (B) est espacé de l'élément de montage de pivot (22),
caractérisé en ce que l'organe formant pivot (20) comprend une plaque de pivot (30) accouplée de façon
pivotante à la base (18), la plaque de pivot (30) pouvant pivoter autour de l'axe
de rotation (B).
2. Mélangeur à tambour (10) selon la revendication 1, comprenant en outre un accouplement
à charnière (28) entre l'organe formant pivot (20) et la base (18), dans lequel l'axe
de rotation (B) passe dans l'accouplement à charnière (28).
3. Mélangeur à tambour (10) selon la revendication 1 ou 2, dans lequel le châssis comprend
des roues (30) accouplées à la base (18) à travers une entretoise (32), l'organe formant
pivot (20) étant accouplé de façon pivotante à la base (18) à travers l'entretoise
(32), dans lequel l'axe de rotation (B) passe dans l'entretoise (32).
4. Mélangeur à tambour (10) selon la revendication 3, dans lequel l'élément de montage
de pivot (22) est positionné à l'écart de l'entretoise (32).
5. Mélangeur à tambour (10) selon la revendication 3 ou 4, dans lequel l'organe formant
pivot (20) comprend des bagues (34) connectées de façon rotative à l'entretoise (32).
6. Mélangeur à tambour (10) selon l'une quelconque des revendications précédentes, comprenant
en outre une plaque d'arrêt (36) fixée de manière rigide à la base (18) pour limiter
le mouvement de l'organe formant pivot (20).
7. Mélangeur à tambour (10) selon l'une quelconque des revendications précédentes, dans
lequel le bord de la plaque de pivot (30) est accouplé de façon pivotante à la base
(18).
8. Mélangeur à tambour (10) selon l'une quelconque des revendications précédentes, dans
lequel l'élément de montage de pivot (22) est une protubérance positionnée de façon
centrale sur la plaque de pivot (30).
9. Mélangeur à tambour (10) selon l'une quelconque des revendications précédentes, dans
lequel l'axe de rotation (B) est positionné transversalement au plan de mouvement
du tambour (12).
10. Mélangeur à tambour (10) selon l'une quelconque des revendications précédentes, comprenant
en outre un moteur (60) accouplé au tambour (12) par l'intermédiaire d'un système
de transmission (62), le système de transmission (62) comprenant :
une poulie (64) accouplée au moteur (60) par l'intermédiaire d'une courroie (76) ;
un premier élément denté (66) connecté à la poulie (64) ; et
un deuxième élément denté (68) accouplé au premier élément denté (66) par l'intermédiaire
d'une chaîne (70), le deuxième élément denté (68) étant connecté au tambour (12),
dans lequel le tambour (12) peut être mis en rotation par le moteur (60) par l'intermédiaire
du système de transmission (62).
11. Mélangeur à tambour (10) selon la revendication 10, dans lequel la courroie (76) est
en caoutchouc.
12. Mélangeur à tambour (10) selon la revendication 10 ou 11, dans lequel le moteur (60)
est aligné de façon coaxiale avec le deuxième élément denté (68).