Tensioning mechanism, walking device and engineering machinery

Abstract

The utility model discloses a tensioning mechanism, a walking device and engineering machinery, and the tensioning mechanism comprises a guide wheel and a guide seat; the guide seat comprises a seat body and a tensioning screw rod, the seat body is provided with a first vertical plate, and the tensioning screw rod penetrates through the first vertical plate; a tensioning block is arranged on the side face of the guide wheel, the tensioning block is assembled in the base body and abuts against one end of a tensioning screw rod, and the tensioning screw rod is used for adjusting the position of the tensioning block so as to achieve tensioning adjustment of the guide wheel. The position of the tensioning block can be adjusted by rotating the tensioning screw rod, tensioning adjustment of the guide wheel is achieved, the form and tension of a crawler belt are effectively kept, the traction effect is achieved, traction force is stable, and the device is suitable for the low-speed climbing state and high in reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to a tensioning mechanism, a traveling device and an engineering machinery. Background Art

[0002] For mountain driving equipment, it is necessary to operate on a slope of 20° to 30°. Since the traction force of the vehicle itself is insufficient when driving on a slope, it is necessary to add auxiliary traction equipment, the weight of which is much smaller than the weight of the vehicle body. When the auxiliary traction equipment uses the existing tensioning device, it is necessary to drill a threaded hole on the rear end face of the guide wheel, connect it to the tensioning device through the threaded hole, install an oil filling valve at the rear end of the tensioning device, and fill the tensioning cylinder with oil through the oil filling valve to adjust the position of the guide wheel. However, the existing tensioning device has the following disadvantages: (1) During the ramp driving process, the spring of the tensioning device is compressed, which changes the shape and tension of the track, resulting in unstable traction force on the ramp, which is easy to cause rollover failure and poses a high safety hazard; (2) The existing tensioning device is large in size and cannot be arranged inside the frame cavity with a wheelbase of 1.5 meters; (3) When the track plate presses a stone on one side to produce a left and right impact, the guide wheel cannot be adjusted to relieve the impact due to its rigid connection with the tensioning device. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a tensioning mechanism, a walking device and an engineering machinery. The position of the tensioning block can be adjusted by rotating the tensioning screw, so as to achieve the tensioning adjustment of the guide wheel, effectively maintain the shape and tension of the crawler track, achieve the traction effect, and have stable traction force. The utility model is suitable for low-speed climbing and has high reliability.

[0004] The utility model provides the following technical solutions:

[0005] In a first aspect, a tensioning mechanism is provided, comprising a guide wheel and a guide seat;

[0006] The guide seat comprises a seat body and a tensioning screw, the seat body is provided with a first vertical plate, and the tensioning screw is installed through the first vertical plate;

[0007] A tension block is provided on the side of the guide wheel. The tension block is assembled in the seat body and abuts against one end of the tension screw. The tension screw is used to adjust the position of the tension block to achieve tension adjustment of the guide wheel.

[0008] Furthermore, the tensioning screw includes a screw body and a bolt head arranged at one end of the screw body, and the other end of the screw body is against the tensioning block; the screw body is sleeved with a first nut and a second nut located on both sides of the first vertical plate.

[0009] Furthermore, a wheel axle is installed at the center of the guide wheel, the wheel axle is rotatably connected to the guide wheel, and the two ends of the wheel axle are respectively connected to a first tensioning block and a second tensioning block.

[0010] Furthermore, the seat body includes a vertical plate and a first bent plate and a second bent plate symmetrically connected to both sides of the vertical plate. The first vertical plate is arranged in the first bent plate, and the first bent plate is also provided with an operating hole corresponding to the position of the first vertical plate and the tensioning screw.

[0011] Furthermore, two first track plates are arranged opposite to each other in the first bent plate, and a first track is formed between the two first track plates. The ends of the first track plates are closed by second vertical plates, and the first tensioning block is assembled in the first track and can slide along the first track.

[0012] Furthermore, two second track plates are arranged opposite to each other in the second bent plate, and a second track is formed between the two second track plates. The ends of the second track plates are closed by a third vertical plate, and the second tensioning block is assembled in the second track and can slide along the second track.

[0013] Furthermore, a reinforcing plate is connected between the first track plate and the first bent plate, and between the second track plate and the second bent plate.

[0014] In a second aspect, a walking device is provided, comprising the tensioning mechanism described in the first aspect.

[0015] Furthermore, it also includes a frame, a driving wheel and a motor, the driving wheel and the two guide wheels are installed on the frame in a triangular shape, and tracks are provided on the outside of the driving wheel and the guide wheels; the motor is connected to the driving wheel to drive the driving wheel to rotate; the frame is also equipped with a plurality of supporting wheels located between the two guide wheels, and the guide seat is provided at the end of the frame.

[0016] In a third aspect, there is provided an engineering machine, comprising the tensioning mechanism described in the first aspect or the walking device described in the second aspect.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The tensioning mechanism provided by the utility model comprises a guide wheel and a guide seat, the guide seat comprises a seat body and a tensioning screw, a tensioning block is arranged on the side of the guide wheel, the tensioning block is assembled in the seat body and abuts against one end of the tensioning screw, the position of the tensioning block can be adjusted by rotating the tensioning screw, the tensioning adjustment of the guide wheel is realized, the shape and tension of the crawler track are effectively maintained, the traction effect is achieved, the traction force is stable, it is suitable for low-speed climbing state, and the reliability is high; when the walking encounters a stone and generates a left-right impact, the guide wheel and the tensioning screw will produce a left-right offset to alleviate the impact;

[0019] (2) The tensioning mechanism provided by the utility model has a simple structure. The mating surfaces of the tensioning block and the screw rod do not need to be provided with threaded holes, and the installation is convenient. The actual reduction in the extension amount of the tensioning screw rod is equal to the numerical value of the track droop. The tensioning adjustment is convenient, and the tensioning mechanism is small in size and can be installed without obstacles inside the frame cavity of a vehicle with a smaller wheelbase. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the walking device in the embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the tensioning mechanism in the embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the guide wheel in the embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the guide seat in the embodiment of the utility model;

[0024] Figure 5 It is a side view of the guide seat in the embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the screw in the embodiment of the utility model;

[0026] The markings in the figure are: 1. frame; 2. guide wheel; 3. supporting wheel; 4. driving wheel; 5. motor; 6. track; 7. first bent plate; 8. tensioning screw; 801. screw body; 802. bolt head; 9. first nut; 10. second nut; 11. first tensioning block; 1101. screw mating surface; 12. operating hole; 13. first vertical plate; 14. wheel axle; 15. second tensioning block; 16. second bent plate; 17. vertical plate; 18. second vertical plate; 19. first track plate; 20. first track; 21. second track plate; 22. second track; 23. third vertical plate; 24. reinforcement plate. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0028] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a tensioning mechanism, including a guide wheel 2 and a guide seat, wherein the guide seat includes a seat body and a tensioning screw 8.

[0031] like Figure 3 As shown, a tension block is provided on the side of the guide wheel 2. Specifically, in this embodiment, a wheel axle 14 is installed at the center of the guide wheel 2, and the wheel axle 14 is rotatably connected to the guide wheel 2, and the two ends of the wheel axle 14 are respectively connected to the first tension block 11 and the second tension block 15. The difference between the guide wheel 2 in this embodiment and the existing ordinary guide wheel is that the slideway length (the distance between the center of the wheel axle 14 and the screw mating surface 1101 of the first tension block 11) is within 100-150mm, which is shorter than the ordinary guide wheel; but the single-sided slideway width (the width of the screw mating surface 1101) reaches 40-60mm, and the screw mating surface 1101 is smooth and no threaded holes are provided.

[0032] like Figure 6 As shown, the tensioning screw 8 includes a screw body 801 and a bolt head 802 provided at one end of the screw body 801. The screw body 801 has an M30 thread, and the bolt head 802 is the same as an M16 bolt head.

[0033] like Figure 2 , Figure 4 and Figure 5 As shown, the seat body includes a vertical plate 17 and a first bent plate 7 and a second bent plate 16 symmetrically connected to both sides of the vertical plate 17. A first vertical plate 13 is arranged inside the first bent plate 7. The tensioning screw 8 penetrates through the first vertical plate 13 and is installed. A first nut 9 and a second nut 10 located on both sides of the first vertical plate 13 are sleeved on the screw body 801. The first bent plate 7 is also provided with an operating hole 12 corresponding to the positions of the first vertical plate 13, the tensioning screw 8, the first nut 9 and the second nut 10, so as to facilitate the rotation of the two nuts (9, 10) and the tensioning screw 8.

[0034] Further, such as Figure 4As shown, two first track plates 19 are arranged opposite to each other in the first curved plate 7, and a first track 20 is formed between the two first track plates 19. The end of the first track plate 19 is closed by a second vertical plate 18. The first tensioning block 11 is assembled in the first track 20 and can slide along the first track 20. The side of the first tensioning block 11 close to the guide seat is a screw mating surface 1101, and the screw mating surface 1101 abuts against one end of the tensioning screw 8. By rotating the tensioning screw 8, the position of the first tensioning block 11 can be adjusted to achieve the tensioning adjustment of the guide wheel 2. Two second track plates 21 are arranged opposite to each other in the second curved plate 16, and a second track 22 is formed between the two second track plates 21. The end of the second track plate 21 is closed by a third vertical plate 23. The second tensioning block 15 is assembled in the second track 22 and can slide along the second track 22, which helps to improve the moving stability of the guide wheel 2 during tensioning adjustment. A reinforcing plate 24 is connected between the first track plate 19 and the first bent plate 7 and between the second track plate 21 and the second bent plate 16 to help enhance the structural strength of the device.

[0035] The working principle of the tensioning mechanism provided in this embodiment is:

[0036] When tension adjustment is required, insert a wrench or other tool through the operating hole 12 to loosen the second nut 10, then rotate the tensioning screw 8 to push the first tensioning block 11 to move, thereby moving the guide wheel 2. After the expected track sag is reached, tighten the second nut 10 to complete the tension adjustment.

[0037] Example 2

[0038] like Figure 1 As shown, this embodiment provides a walking device, including the tensioning mechanism described in Example 1, and also includes a frame 1, a driving wheel 4 and a motor 5. The driving wheel 4 and two guide wheels 2 are installed on the frame 1 in a triangular shape, and tracks 6 are provided on the outside of the driving wheel 4 and the guide wheels 2; the motor 5 is connected to the driving wheel 4 to drive the driving wheel 4 to rotate; a plurality of supporting wheels 3 located between the two guide wheels 2 are also installed on the frame 1; the guide seat is provided at the end of the frame 1 and can be used as a part of the frame 1, that is, the seat body can be provided with the frame 1 as an integrally formed structure.

[0039] The installation method of the tensioning mechanism in the walking device of this embodiment is:

[0040] First, install the tensioning bolt 8, the first nut 9 and the second nut 10 on the base body, but do not tighten them; then install the first tensioning block 11 and the second tensioning block 15 of the guide wheel 2 in the first track 20 and the second track 22 respectively, and respectively abut against the second vertical plate 18 and the third vertical plate 23; then fix the head section and the tail section of the crawler track 6 through the pin; then, tighten the first nut 9, and put a wrench on the bolt head 802 of the tensioning screw 8 through the operating hole 12, and tighten the tensioning screw 8 forward so that the end of the tensioning screw 8 abuts against the first tensioning block 11, and pushes the first tensioning block 11 to drive the guide wheel 2 to move; after the expected crawler track sag is reached, tighten the second nut 10 to achieve the tightening purpose.

[0041] Example 3

[0042] This embodiment provides an engineering machine equipped with the tensioning mechanism described in Embodiment 1 or the traveling device described in Embodiment 2.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tensioning mechanism, characterized in that: Including guide wheels and guide seats; The guide seat comprises a seat body and a tensioning screw, the seat body is provided with a first vertical plate, and the tensioning screw is installed through the first vertical plate; A tension block is provided on the side of the guide wheel. The tension block is assembled in the seat body and abuts against one end of the tension screw. The tension screw is used to adjust the position of the tension block to achieve tension adjustment of the guide wheel.

2. The tensioning mechanism according to claim 1, characterized in that: The tensioning screw comprises a screw body and a bolt head arranged at one end of the screw body, and the other end of the screw body abuts against the tensioning block; the screw body is sleeved with a first nut and a second nut located on both sides of the first vertical plate.

3. The tensioning mechanism according to claim 1, characterized in that: A wheel axle is installed at the center of the guide wheel, the wheel axle is rotatably connected to the guide wheel, and two ends of the wheel axle are respectively connected to a first tensioning block and a second tensioning block.

4. The tensioning mechanism according to claim 3, characterized in that: The seat body includes a vertical plate and a first bent plate and a second bent plate symmetrically connected to both sides of the vertical plate. The first vertical plate is arranged in the first bent plate, and the first bent plate is also provided with an operating hole corresponding to the position of the first vertical plate and the tensioning screw.

5. The tensioning mechanism according to claim 4, characterized in that: Two first track plates are arranged opposite to each other in the first bent plate, and a first track is formed between the two first track plates. The ends of the first track plates are closed by second vertical plates, and the first tensioning block is assembled in the first track and can slide along the first track.

6. The tensioning mechanism according to claim 5, characterized in that: Two second track plates are arranged opposite to each other in the second bent plate, and a second track is formed between the two second track plates. The ends of the second track plates are closed by a third vertical plate. The second tensioning block is assembled in the second track and can slide along the second track.

7. The tensioning mechanism according to claim 6, characterized in that: A reinforcing plate is connected between the first track plate and the first bent plate, and between the second track plate and the second bent plate.

8. A walking device, characterized in that: It comprises the tensioning mechanism described in any one of claims 1 to 7.

9. The walking device according to claim 8, characterized in that: It also includes a frame, a driving wheel and a motor. The driving wheel and the two guide wheels are installed on the frame in a triangular shape, and tracks are provided on the outside of the driving wheel and the guide wheels. The motor is connected to the driving wheel to drive the driving wheel to rotate. The frame is also equipped with a plurality of supporting wheels located between the two guide wheels, and the guide seat is provided at the end of the frame.

10. An engineering machine, characterized in that: It comprises the tensioning mechanism described in any one of claims 1 to 7 or the walking device described in any one of claims 8 to 9.

Images