CN215883847U - Running gear and platform truck - Google Patents

Abstract

The utility model relates to the technical field of engineering vehicles, in particular to a travelling mechanism and a platform truck. The utility model provides a traveling mechanism which comprises a supporting structure, a crawler wheel and a linear driving device, wherein the linear driving device is arranged on the supporting structure, the linear driving device and the supporting structure are respectively connected with the side wall of the crawler wheel, the linear driving device is used for driving the crawler wheel to rotate around a first linear direction, and the supporting structure is suitable for being connected with a frame. Therefore, the support structure is rotatably connected with the crawler wheel, the crawler wheel can rotate around the support structure, the linear driving device is hinged with the side wall of the crawler wheel, the linear driving device can directly push the crawler wheel to rotate around the first linear direction, the situation that the linear driving device needs to push the support structure to rotate so as to drive the crawler wheel to turn is avoided, the load of the linear driving device for pushing the crawler wheel to rotate is reduced, and the turning of the crawler wheel is more convenient.

Description

Running gear and platform truck

Technical Field

The utility model relates to the technical field of engineering vehicles, in particular to a travelling mechanism and a platform truck.

Background

In the prior art, supporting legs of an engineering truck are respectively connected with crawler wheels and a truck body, the supporting legs are located on the upper sides of the crawler wheels, a telescopic oil cylinder drives the crawler wheels to horizontally turn by pushing the supporting legs to rotate, and the steering difficulty is caused by the fact that the load of the telescopic oil cylinder is large due to the fact that the torque of a guide post during rotation is large.

SUMMERY OF THE UTILITY MODEL

The problem to be solved by the utility model is how to reduce the steering load of the running gear.

In order to solve the above problems, the present invention provides a traveling mechanism, which includes a support structure, a track wheel, and a linear driving device, wherein the linear driving device is mounted on the support structure, the linear driving device and the support structure are respectively connected to a sidewall of the track wheel, the linear driving device is configured to drive the track wheel to rotate around a first linear direction, and the support structure is connected to a support frame.

Optionally, the traveling mechanism further includes a mounting seat, one end of the mounting seat is rotatably connected to the side wall of the track wheel, the other end of the mounting seat is hinged to the linear driving device and the supporting structure, the track wheel is further adapted to rotate around a second linear direction, and the first linear direction is perpendicular to the second linear direction.

Optionally, the traveling mechanism further includes a yaw shaft, the yaw shaft is mounted on the mounting seat, a through hole is formed in the crawler wheel, and the yaw shaft penetrates through the through hole.

Optionally, the traveling mechanism further includes a stopping structure, the stopping structure is disposed on the yaw shaft, and the stopping structure is located on one side of the crawler wheel, which is far away from the mounting seat.

Optionally, the mounting seat includes a first limiting plate and a second limiting plate, and the driving end of the linear driving device is located between the first limiting plate and the second limiting plate and is respectively rotatably connected to the first limiting plate and the second limiting plate.

Optionally, the support structure includes a connecting member and a support column, the support column is adapted to be connected to the frame, the support column and the track wheel are disposed at an interval, the connecting member is connected to the support column and the track wheel, respectively, and the linear driving device is mounted on the connecting member.

Optionally, the support structure further includes a connecting arm, the connecting arm is disposed on the side wall of the connecting piece, and the connecting arm is connected to the linear driving device so that the linear driving device is disposed in parallel with the connecting piece.

Optionally, the track wheel includes a track support structure, at least two first balance beams, and a thrust wheel assembly, the first balance beams are rotatably connected to the track support structure, the thrust wheel assembly is located at the lower side of the track support structure and is connected to the first balance beams, and the thrust wheel assembly is used for supporting the track support structure.

Optionally, the thrust wheel assembly includes at least two second balance beams and a thrust wheel, the second balance beam is rotatably connected with the first balance beam, the thrust wheel is hinged with the first balance beam, and the thrust wheel is suitable for being attached to the crawler.

Compared with the prior art, the walking mechanism has the beneficial effects that:

according to the utility model, the linear driving device is arranged on the supporting structure, so that the linear driving device is arranged, the supporting structure is rotationally connected with the crawler wheel, the crawler wheel can rotate around the supporting structure, the linear driving device is hinged with the side wall of the crawler wheel, so that the linear driving device can directly push the crawler wheel to rotate around a first linear direction (namely the Z-axis direction in the attached drawing), the linear driving device is prevented from pushing the supporting structure to rotate to drive the crawler wheel to steer, the load of the linear driving device for pushing the crawler wheel to rotate is reduced, and the steering of the crawler wheel is more convenient.

The utility model also provides a platform truck which comprises the travelling mechanism and a frame, wherein the supporting structure of the travelling mechanism is connected with the frame. The platform car has the beneficial effects that the walking mechanism has, and the description is omitted.

Drawings

FIG. 1 is a schematic structural diagram of a traveling mechanism according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the construction of the mount and yaw axis of the present invention;

fig. 4 is a schematic structural view of the track wheel of the present invention.

Description of reference numerals:

3-a crawler wheel; 31-a track support structure; 32-a first balance beam; 33-a track roller assembly; 331-a second balance beam; 332 — a thrust wheel; 34-a tension wheel; 35-riding wheels; 36-a track; 37-a through hole; 41-a support structure; 411-support column; 412-a connector; 413-a linker arm; 4131-a third limiting plate; 4132-fourth limiting plate; 42-linear drive means; 43-a mounting seat; 431-a first limit plate; 432-a second limiting plate; 44-a yaw axis; 441-stop structure.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the terms "an embodiment," "one embodiment," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment or example implementation of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

Also, in the drawings, the Z-axis represents a vertical, i.e., up-down position, and a positive direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents up, and a negative direction of the Z-axis (i.e., a direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents a horizontal direction and is designated as a left-right position, and a positive direction of the X-axis (i.e., an arrow direction of the X-axis) represents a right side and a negative direction of the X-axis (i.e., a direction opposite to the positive direction of the X-axis) represents a left side; in the drawings, the Y-axis indicates the front-rear position, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) indicates the rear side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the front side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

An embodiment of the present invention provides a traveling mechanism, as shown in fig. 1, including a support structure 41, a track wheel 3, and a linear driving device 42, where the linear driving device 42 is mounted on the support structure 41, the linear driving device 42 and the support structure 41 are respectively hinged to a side wall of the track wheel 3, the linear driving device 42 is configured to drive the track wheel 3 to rotate around a first linear direction, and the support structure 41 is adapted to be connected to a vehicle frame.

In one embodiment, the track wheel 3 includes a track supporting structure 31, a first connection hole is opened on one side of the track supporting structure 31 close to the supporting structure 31, the first connection hole is arranged along a vertical direction, the supporting structure 41 includes a supporting column 411, the supporting column 411 is arranged along a first linear direction, an upper end of the supporting column 411 is connected with a frame bolt, and the supporting column 411 is inserted into the first connection hole so that the track supporting structure 41 can rotate around the first linear direction (i.e. the Z-axis direction in the drawing). The linear driving device 42 can be any one of a telescopic oil cylinder, an electric push rod or a linear motor, the linear driving device 42 is connected with the supporting column 411 in a bolt fastening mode, a second connecting hole is formed in the driving end of the linear driving device 42, a third connecting hole is formed in the crawler supporting structure 41, the rotating shaft penetrates through the second connecting hole and the third connecting hole, and the third connecting hole and the first connecting hole are not located on the same vertical line. When the crawler wheel 3 needs to turn to the side far away from the supporting structure 41, the driving end of the linear driving device 42 extends out to push the crawler wheel 3 to rotate to the side far away from the supporting structure 41, and when the crawler wheel 3 needs to turn to the side near the frame, the driving end of the linear driving device 42 retracts to drive the crawler wheel 3 to rotate to the side near the supporting column 411.

This has the advantage that the linear driving device 42 is mounted on the supporting structure 41, so that the linear driving device 42 is mounted, the supporting structure 41 is hinged to the side wall of the track wheel 3, so that the track wheel 3 can rotate around the supporting structure 41, and the linear driving device 42 is hinged to the side wall of the track wheel 3, so that the linear driving device 42 can directly push the track wheel 3 to rotate around a first linear direction (i.e. the Z-axis direction in the drawing), so that the track wheel 3 is steered, and the linear driving device 42 is prevented from pushing the supporting structure 41 to rotate to drive the track wheel 3 to steer, thereby reducing the load of the linear driving device 42 driving the track wheel 3 to rotate, and facilitating the steering of the track wheel 3.

As shown in fig. 1 and 3, the traveling mechanism further includes a mounting seat 43, one end of the mounting seat 43 is rotatably connected to a sidewall of the track wheel 3, the other end of the mounting seat 43 is hinged to the linear driving device 42 and the supporting structure 41, respectively, and the track wheel 3 is further adapted to rotate around a second linear direction, which is perpendicular to the first linear direction.

In one embodiment, the mounting seat 43 is connected to the track wheel 3 through a pivoting support, the pivoting support includes a first race and a second race, the first race is sleeved on the second race, a ball is disposed between the first race and the second race, the first race can rotate relative to the second race, the first race is screwed to the mounting seat 43, and the second race is screwed to the track wheel 3 so that the track wheel 3 can rotate around a second linear direction (i.e., an X-axis direction in the drawings). The driving end of the linear driving device 42 is connected with the shaft hole of the mounting seat 43, and the supporting structure 41 is connected with the shaft hole of the mounting seat 43. When the crawler wheel 3 needs to turn to the side far away from the supporting structure 41, the driving end of the linear driving device 42 extends out, the mounting seat 43 drives the crawler wheel 3 to rotate to the side far away from the supporting structure 41, and when the crawler wheel 3 needs to turn to the side near the supporting structure 41, the driving end of the linear driving device 42 retracts, and the mounting seat 43 drives the crawler wheel 3 to rotate to the side near the supporting structure 41. When the crawler wheel 3 goes up a slope, the crawler wheel 3 rotates upward to advance in a backward leaning posture, and when the crawler wheel 3 goes down a slope, the crawler wheel 3 rotates downward to advance in a forward leaning posture.

This is advantageous in that the one end of the mounting seat 43 is rotatably connected to the side wall of the track wheel 3, so that the track wheel 3 can rotate around a second linear direction (i.e., the X-axis direction in the drawing), and the track wheel 3 can tilt forward or backward, thereby realizing the slope adaptation of the track wheel 3, when the track wheel 3 tilts forward or backward, the relative position of the mounting seat 43 and the track wheel 3 can be maintained by rotatably connecting the one end of the mounting seat 43 to the side wall of the track wheel 3, and the other end of the mounting seat 43 is hinged to the linear driving device 42 and the supporting structure 41, respectively, so that the linear driving device 42 and the supporting structure 41 can be prevented from interfering with the forward tilting or backward tilting of the track wheel 3.

As shown in fig. 3 and 4, the traveling mechanism further includes a yaw axis 44, the yaw axis 44 is connected to the mounting seat 43, a through hole 37 is formed in the track wheel 3, and the yaw axis 44 penetrates through the through hole 37.

In one embodiment, the yaw axis 44 is a cylindrical structure, one end of the yaw axis 44 is externally threaded, the mounting seat 43 is provided with a threaded hole, the yaw axis 44 is in threaded connection with the mounting seat 43, the through hole 37 is provided on the track supporting structure 31, the through hole 37 penetrates through the track supporting structure 31 along the horizontal direction, the yaw axis 44 penetrates through the through hole 37, and the track wheel can rotate around the axis of the yaw axis 44.

The arrangement has the advantages that the track wheel 3 is provided with the through hole 37, the yaw shaft 44 is arranged in the through hole 37 in a penetrating manner, so that the track wheel 3 can rotate around the axis of the yaw shaft 44, the rotating connection between the mounting seat 43 and the track wheel 3 is realized, the yaw shaft 44 is mounted on the mounting seat 43, the linear driving device 42 can drive the track wheel 3 to rotate through the yaw shaft 44, and therefore the yaw shaft 44 can drive the track wheel 3 to rotate as an arm of force, and compared with the situation that the track wheel 3 is directly driven to rotate through the mounting seat 43, the steering is more labor-saving and more stable.

As shown in fig. 3, the traveling mechanism further includes a stopping structure 441, the stopping structure 441 is disposed on the yaw shaft 44, and the stopping structure 441 is located on a side of the track wheel 3 away from the mounting seat 43.

In one embodiment, the stopping structure 441 is an annular protrusion structure, the stopping structure 441 is integrally connected to an end of the yaw shaft 44 away from the mounting seat 43, and a sidewall of the stopping structure 441 is attached to a sidewall of the track wheel 3 on a side away from the mounting seat 43.

This has the advantage that when the linear driving device 42 turns the track wheel 3 via the yaw axis 44, the stop structure 441 is located on the side of the track wheel 3 away from the mounting seat 43, so that the stop structure 441 can limit the axial displacement of the yaw axis 44, thereby preventing the yaw axis 44 from slipping out of the through hole 37, and being more stable.

As shown in fig. 3, the mounting seat 43 includes a first limiting plate 431 and a second limiting plate 432, the driving end of the linear driving device 42 is located between the first limiting plate 431 and the second limiting plate 432, and the driving end of the linear driving device 42 is rotatably connected with the first limiting plate 431 and the second limiting plate 432.

In an embodiment, a third connection hole is formed in the first limiting plate 431, the third connection hole further penetrates through the second limiting plate 432, a second connection hole is formed in the driving end of the linear driving device 42, a rotating shaft penetrates through the third connection hole and the second connection hole, and the side wall of the linear driving device 42 is attached to the first limiting plate 431 and the second limiting plate 432 respectively.

This is advantageous in that the driving end of the linear actuator 42 is located between the first limiting plate 431 and the second limiting plate 432, so that the first limiting plate 431 and the second limiting plate 432 can limit the radial displacement of the driving end of the linear actuator 42, thereby stabilizing the operation of the linear actuator 42.

As shown in fig. 1, the supporting structure 41 includes a connecting member 412 and a supporting column 411, the supporting column 411 and the track wheel 3 are spaced apart, the connecting member 412 is connected to the supporting column 411 and the track wheel 3, respectively, and the linear driving device 42 is mounted on the connecting member 412.

In one embodiment, the supporting column 411 is located on one side of the track wheel 3 in the negative X-axis direction, and the distance between the supporting column 411 and the track wheel 3 is between 10cm and 70cm, specifically, the distance between the supporting column 411 and the track wheel 3 is 10cm, 20cm, 40cm, and 70 cm. One end of the connecting member 412 is integrally connected to the supporting column 411, the other end of the connecting member 412 is connected to the shaft hole of the mounting seat 43, and the linear driving device 42 is connected to the connecting member 412 by a screw.

This arrangement has an advantage that the support column 411 is spaced apart from the track wheel 3, so that the support column 411 is spaced apart from the track wheel 3, thereby preventing the support column 411 from interfering with the rotation of the track wheel 3, the support column 411 is connected to the track wheel 3 by the connecting members 412 being hinged to the track wheel 3, and the linear driving device 42 is mounted on the connecting members 412 by the linear driving device 42 being mounted on the connecting members 412.

As shown in fig. 1, the supporting structure 41 further includes a connecting arm 413, the connecting arm 413 is connected to a side wall of the connecting member 412, and the connecting arm 413 is connected to the linear driving device 42 so that the linear driving device 42 is disposed in parallel with the connecting member 412.

In one embodiment, the connecting arm 413 is integrally connected to the connecting member 412, the connecting arm 413 is perpendicular to the connecting member 412, and the linear driving device 42 and the connecting member 412 are arranged in parallel along the Y-axis direction. The connecting arm 413 comprises a third limiting plate 4131 and a fourth limiting plate 4132, one end of the linear driving device 42, which is far away from the track wheel 3, is located between the third limiting plate 4131 and the fourth limiting plate 4132, a fourth connecting hole is formed in the third limiting plate 4131, the fourth connecting hole further penetrates through the fourth limiting plate 4132, a fifth connecting hole is formed in one end of the linear driving device 42, which is far away from the track wheel 3, and a rotating shaft penetrates through the fourth connecting hole and the fifth connecting hole so as to realize the rotating connection between the connecting arm 413 and the linear driving device 42.

This has the advantage that the connecting arm 413 is connected to the side wall of the connecting member 412, so that the connecting arm 413 is connected to the linear driving device 42, so that the linear driving device 42 can be arranged in parallel with the connecting member 412, and the linear driving device 42 is prevented from being inclined relative to the connecting member 412, so that the linear driving device 42 can push the track wheel 3 to steer in a direction perpendicular to the track wheel 3, which is more labor-saving.

As shown in fig. 4, the track wheel 3 further includes a track supporting structure 41, a first balance beam 32, and a roller assembly 33, the first balance beam 32 is rotatably connected to the track supporting structure 41, the roller assembly 33 is connected to the first balance beam 32, the roller assembly 33 is located at the lower side of the track supporting structure 41, and the roller assembly 33 is used for supporting the track supporting structure 41.

In one embodiment, two tension pulleys 34 are provided at both ends of the track support structure 41, the tension pulleys 34 are attached to the track 36, a riding wheel 35 is provided at an upper end of the track support structure 41, the riding wheel 35 supports the track 36, two first balance beams 32 are provided, the two first balance beams 32 are provided in the front-rear direction, the first balance beams 32 are in a V-shaped configuration, the top ends of the first balance beams 32 are connected to the shaft holes of the track support structure 41, and the branch ends of the first balance beams 32 are connected to the two support wheel assemblies 33, respectively. When the track wheel 3 runs to a pit or a pipe pit, the rear first balance beam 32 rotates clockwise, and the front first balance beam 32 rotates counterclockwise, so that the lower portion of the track 36 protrudes downward, and the track wheel 3 can cross the pipe pit or the pipe pit. When the track wheels 3 run to an obstacle and the track wheels 3 are located at the center of the obstacle, the rear first balance beam 32 rotates counterclockwise, and the front first balance beam 32 rotates clockwise, so that the track 36 is raised upward, and the track support structure 41 can cross the obstacle.

This arrangement is advantageous in that the track roller assembly 33 is connected to the first balance beam 32 by the first balance beam 32 being rotatably connected to the track support structure 41, and the track roller assembly 33 can be adaptively rotated when the track roller 3 encounters an obstacle, so that the track roller 3 can be adapted to various road conditions, and the track roller assembly 33 can support the track support structure 41 by the track roller assembly 33 being located at the lower side of the track support structure 41.

As shown in fig. 4, the track roller assembly 33 includes at least two second balance beams 331 and track rollers 332, the second balance beams 331 are rotatably connected to the first balance beams 32, at least two track rollers 332 are hinged to the first balance beams 32, and the track rollers 332 are adapted to engage with the tracks 36.

In one embodiment, there are two second balance beams 331, two second balance beams 331 are disposed in the front-rear direction, the second balance beams 331 are in a V-shaped configuration, the upper end of the second balance beam 331 is rotatably connected to the first balance beam 32, and the branched end of the second balance beam 331 is hinged to the thrust wheel 332. Therefore, the second balance beam 331 is hinged to the first balance beam 32, the thrust wheel 332 is hinged to the first balance beam 32, and when the first balance beam 32 rotates, the second balance beam 331 can rotate adaptively, so that the thrust wheel 332 is attached to the crawler 36, the thrust wheel 332 is prevented from falling off the crawler 36, and the crawler 3 is more stable.

Another embodiment of the present invention provides a flatcar, comprising the above-mentioned traveling mechanism, and further comprising a frame, wherein the supporting structure 41 of the traveling mechanism is connected with the frame. The upper end of the supporting structure 41 is connected with the frame, and when the track wheel 3 advances, the track wheel 3 drives the frame to advance synchronously through the supporting structure 41. The platform car has the beneficial effects that the walking mechanism has, and the description is omitted.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The travelling mechanism is characterized by comprising a supporting structure (41), crawler wheels (3) and a linear driving device (42), wherein the linear driving device (42) is installed on the supporting structure (41), the linear driving device (42) and the supporting structure (41) are respectively hinged to the side walls of the crawler wheels (3), the linear driving device (42) is used for driving the crawler wheels (3) to rotate around a first linear direction, and the supporting structure (41) is suitable for being connected with a frame.

2. The running gear according to claim 1, further comprising a mounting seat (43), wherein one end of the mounting seat (43) is rotatably connected to a side wall of the track wheel (3), the other end of the mounting seat (43) is hinged to the linear driving device (42) and the support structure (41), respectively, and the track wheel (3) is further adapted to rotate around a second linear direction, which is perpendicular to the first linear direction.

3. The walking mechanism of claim 2, further comprising an eccentric shaft (44), wherein the eccentric shaft (44) is mounted on the mounting seat (43), a through hole (37) is formed in the crawler wheel (3), and the eccentric shaft (44) is inserted into the through hole (37).

4. The running gear according to claim 3, characterized in that it further comprises a stop structure (441), said stop structure (441) being provided on said yaw axis (44), said stop structure (441) being located on a side of said track wheel (3) remote from said mounting seat (43).

5. The traveling mechanism according to claim 2, characterized in that the mounting seat (43) comprises a first limiting plate (431) and a second limiting plate (432), and the driving end of the linear driving device (42) is located between the first limiting plate (431) and the second limiting plate (432) and is respectively rotatably connected with the first limiting plate (431) and the second limiting plate (432).

6. Travelling mechanism according to claim 1, wherein the support structure (41) comprises a support column (411) and a connecting member (412), the support column (411) is adapted to be connected to the frame, the support column (411) and the track wheel (3) are arranged at intervals, the connecting member (412) is connected to the support column (411) and the track wheel (3), respectively, and the linear drive (42) is mounted on the connecting member (412).

7. Running gear according to claim 6, characterized in that the support structure (41) further comprises a connecting arm (413), the connecting arm (413) being arranged on a side wall of the connecting element (412), the connecting arm (413) being connected to the linear drive (42) such that the linear drive (42) is arranged side by side with the connecting element (412).

8. Running gear according to claim 1, characterized in that the track wheels (3) comprise a track support structure (31), at least two first balance beams (32) and a bogie wheel assembly (33), the first balance beams (32) being rotatably connected to the track support structure (31), the bogie wheel assembly (33) being located at the lower side of the track support structure (31) and being connected to the first balance beams (32), the bogie wheel assembly (33) being adapted to support the track support structure (31).

9. Running gear according to claim 8, characterized in that the bogie wheel assembly (33) comprises at least two second balance beams (331) and a bogie wheel (332), the second balance beams (331) being in rotational connection with the first balance beams (32), the bogie wheel (332) being articulated with the first balance beams (32), the bogie wheel (332) being adapted to engage with a track (36).

10. A dolly, characterized in that it comprises a running gear according to any one of claims 1-9 and further comprises a frame, to which the support structure (41) of the running gear is connected.

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