Self-adjusting tensioning device for crawler belt unmanned platform walking system

Abstract

The utility model provides a self-adjusting tensioning device for a crawler unmanned platform walking system. The self-adjusting tensioning device comprises a tensioning device rack, a tensioning wheel and a follow-up component. The tensioning device rack is connected with the tensioning wheel and the follow-up component through the damping spring self-adjusting mechanism, the crawler belt anti-falling mechanism and the follow-up component. The tensioning device rack comprises a rack base, and a fixed guide rail is arranged on the rack base; the tensioning wheel and follow-up component comprises a tensioning wheel shaft sleeve, a plurality of fixed guide rails are arranged on the tensioning wheel shaft sleeve, and tensioning wheels are arranged at the two ends of the tensioning wheel shaft sleeve respectively. The damping spring self-adjusting mechanism comprises a damping fixing threaded rod, one end of the damping fixing threaded rod is hinged to a connecting rod through a bolt, and the connecting rod is sleeved with a damping spring. The simple catch connecting piece simultaneously meets three functions of follow-up of a tensioning wheel, follow-up of a crawler anti-falling mechanism and a follow-up component and locking of a tensioning wheel shaft sleeve, self-adjustment of crawler tensioning and whole-process crawler falling prevention are achieved, and it is guaranteed that a crawler unmanned platform normally runs under various complex road conditions.

Description

Technical Field

[0001] The utility model relates to a self-adjusting tensioning device for a crawler unmanned platform walking system, belonging to the technical field of vehicle crawler chassis. Background Art

[0002] The track tensioner is an indispensable component of the driving system of unmanned chassis and other vehicles. In order to meet the driving requirements of different road conditions, the track tensioner plays a particularly critical role.

[0003] In the prior art, the main methods for tensioning tracks are divided into three types: spring tensioning method, cylinder tensioning method and screw tensioning method. Among them, the spring and cylinder tensioning methods have problems such as poor reliability, uncontrollability, and small adjustment amount, while the screw tensioning method does not have an automatic adjustment function. Therefore, it is necessary to optimize and improve the structural design of the existing track tensioning device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a self-adjusting tensioning device for a crawler unmanned platform walking system. The self-adjusting tensioning device for a crawler unmanned platform walking system has a large adjustment range and adopts a combination of manual adjustment and automatic adjustment to realize automatic tensioning and relaxation of the crawler. It has a simple and ingenious structure, is easy to disassemble and assemble, and has low manufacturing and maintenance costs.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a self-adjusting tensioning device for a crawler unmanned platform walking system, comprising a tensioning device frame, a tensioning wheel and a follower component; the tensioning device frame is connected to the tensioning wheel and the follower component through a shock-absorbing spring self-adjusting mechanism, a crawler anti-falling mechanism and a follower component; the tensioning device frame comprises a frame base, on which a fixed guide rail is arranged; the tensioning wheel and the follower component comprise a tensioning wheel shaft sleeve, on which a plurality of fixed guide rails are arranged, and tensioning wheels are respectively arranged at both ends of the tensioning wheel shaft sleeve; the shock-absorbing spring self-adjusting mechanism comprises a shock-absorbing fixed threaded rod, One end of the shock-absorbing fixed threaded rod is hinged with a connecting rod by a bolt, and a shock-absorbing spring is sleeved on the connecting rod; one end of the connecting rod is connected to the tensioning wheel shaft sleeve by a bolt and a nut, and one end of the shock-absorbing spring is connected to the frame base by a locking nut; the track anti-falling mechanism and the follow-up component include an anti-track falling baffle and a baffle connecting piece connected to the anti-track falling baffle, a linear guide slider is connected to the inner side of the baffle connecting piece, and the linear guide slider is connected to the frame base through a linear guide; the lower end of the baffle connecting piece is connected to the tensioning wheel shaft sleeve, and the linear guide works in coordination with the fixed guide rail.

[0007] A rack head stopper is provided at the bottom of the fixed guide rail.

[0008] The tension wheel shaft sleeve is connected to the tension wheel through a tension wheel shaft system, and a bearing end cover is connected to the end of the tension wheel shaft system.

[0009] The tensioning wheel shaft system includes a stepped shaft, on which a tensioning wheel shaft bearing, a tensioning wheel axle, a tensioning wheel hub bearing and a set screw are arranged in sequence, wherein the tensioning wheel shaft sleeve and the tensioning wheel axle are coaxially clearance-fitted, and the tensioning wheel shaft bearing and the tensioning wheel axle are interference fit.

[0010] The tension wheel shaft bearing is connected to the fixed guide rail, and the tension wheel shaft is connected to the tension wheel.

[0011] The anti-track-falling blocking piece is connected to the blocking piece connecting piece through bolts and nuts.

[0012] The linear guide rail is connected to the frame base through screws.

[0013] The beneficial effect of the utility model is that a simple baffle connecting piece simultaneously satisfies the three functions of tensioning wheel following, track anti-falling mechanism and following of following components, and tensioning wheel shaft sleeve locking, thereby realizing self-adjustment of track tensioning and preventing track from falling off throughout the whole process, ensuring the normal driving of the tracked unmanned platform under complex road conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 Structural schematic diagram of the frame of the middle tensioning device;

[0016] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle tensioner and follower components;

[0017] Figure 4 yes Figure 3 Structural schematic diagram of the middle tensioner shaft;

[0018] Figure 5 Figure 1 A schematic diagram of the structure of the self-adjusting mechanism of the middle shock absorbing spring;

[0019] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle crawler anti-falling mechanism and follower components;

[0020] In the figure: 1-tensioning device frame, 2-tensioning wheel and follower parts, 3-shock-absorbing spring self-adjusting mechanism, 4-track anti-falling mechanism and follower parts, 101-frame base, 102-frame head block, 201-bearing end cover, 202-tensioning wheel shaft sleeve, 203-fixed guide rail, 204-tensioning wheel, 205-tensioning wheel shaft bearing, 206-tensioning wheel axle, 207-tensioning wheel hub bearing, 208-set screw, 301-shock-absorbing fixed threaded rod, 302-shock-absorbing spring, 303-locking nut, 401-linear guide slider, 402-anti-track falling baffle, 403-baffle connector, 5-linear guide. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0022] like Figure 1 As shown, a self-adjusting tensioning device for a crawler unmanned platform walking system includes a tensioning device frame 1 and a tensioning wheel and a follower component 2; the tensioning device frame 1 is connected to the tensioning wheel and the follower component 2 through a shock-absorbing spring self-adjusting mechanism 3, a crawler anti-falling mechanism and a follower component 4.

[0023] like Figure 2 As shown, the tensioning device frame 1 is welded by aluminum plates and aluminum bars. The tensioning device frame 1 is respectively installed on both sides of the vehicle body by bolts and nuts to the frame base 101. The fixed guide rail 203 for moving the tensioning wheel 204 and the linear guide rail 5 for preventing the track from falling off are both connected to the tensioning device frame 1 by screws.

[0024] like Figure 3 and 4 As shown, the tensioning wheel 204 is installed on both sides of the frame through the tensioning wheel shaft 206, and the tensioning wheel and follower component 2 includes two tensioning wheels 204, a tensioning wheel shaft system, and a tensioning wheel shaft sleeve 202; the tensioning wheel shaft sleeve 202 and the tensioning wheel shaft 206 are coaxially clearance-matched and used to fix one end of the shock-absorbing spring 302; the two tensioning wheel shaft bearings 205 are interference-fitted with the tensioning wheel shaft 206 and are placed in the upper and lower fixed guide rail 203 grooves. At this time, the two tensioning wheel shaft bearings 205 are used as wheels that follow the tensioning wheel 204 and its tensioning wheel shaft system forward and backward. When the track is impacted, the shock-absorbing spring 302 contracts and drives the tensioning wheel 204 and its tensioning wheel shaft system to move backward to absorb the vibration impact of the entire machine, thereby solving the problem of the track breaking or falling off due to impact.

[0025] like Figure 5As shown, the shock-absorbing spring self-adjusting mechanism 3 includes a shock-absorbing spring 302 and a shock-absorbing fixed threaded rod 301, the shock-absorbing spring 302 and the shock-absorbing fixed threaded rod 301 are hinged by bolts, one end of the shock-absorbing spring self-adjusting mechanism 3 is fixed to the tensioning wheel shaft sleeve 202 by bolts and nuts, and the other end is connected to the threaded rod 301 by two locking nuts and fixed to the frame base 101. At this time, the two ends of the shock-absorbing spring self-adjusting mechanism 3 remain fixed to realize the spring shock-absorbing self-adjusting function.

[0026] like Figure 6 As shown, the crawler anti-drop mechanism and follower component 4 include two anti-drop baffles 402, two baffle connectors 403 and two linear guide sliders 401. The anti-drop baffle 402 is connected to the upper end of the baffle connector 403 by bolts and nuts, and the lower end of the baffle connector 403 is connected to the two ends of the tensioning wheel shaft sleeve 202 by screws. At this time, the tensioning wheel shaft sleeve 202 is restricted by the baffle connector 403 and will not rotate due to the rotation of the tensioning wheel shaft 206. The linear guide 5 is located between the tensioning device frame 1 and the baffle connector 403, and the linear guide slider 401 is connected to the baffle connector 403 by 4 screws and assembled in the linear guide 5. The function of the connection between the baffle connector 403 and the linear guide slider 401 is to limit the rotation of the tensioning wheel shaft sleeve 202 following the tensioning wheel shaft 206 and to realize the follow-up of the track anti-falling mechanism and the follower component 4, killing two birds with one stone.

[0027] Furthermore, the three sets of parts, namely, the anti-dropping baffle 402, the baffle connector 403, and the linear guide slider 401, are all placed at both ends of the head of the tensioning device frame 1 and are symmetrical.

[0028] Furthermore, the head of the tensioning device frame 1 is easy to disassemble and install, has an ingenious structure, and is easy to maintain.

[0029] Furthermore, the tensioning wheel 204 is symmetrically located at both ends of the tensioning wheel shaft 206, the tensioning wheel hub bearing 207 is connected to the bearing end covers 201 at both ends by screws, and the entire tensioning wheel 204 and its tensioning wheel shaft are symmetrically located at both ends of the head of the tensioning device frame 1.

[0030] Furthermore, the track anti-falling mechanism and the follower component 4 are installed on the left and right sides of the vehicle body through bolts and nuts. The track anti-falling mechanism and the follower component 4 can keep the track unmanned platform in a good tensioned working state when passing through complex road conditions such as ditches and ridges. When the track is impacted, the shock-absorbing spring self-adjusting mechanism 3 can play a buffering role to absorb the vibration impact of the entire machine, maintain the tension of the track, and prevent it from breaking or falling off due to impact.

[0031] Furthermore, the frame head stopper 102 can be used as a lock of the tensioning device frame 1. After the tensioning wheel shaft system and the shock-absorbing spring self-adjusting mechanism 3 are assembled, they can be directly placed in the tensioning device frame 1. The frame head stopper 102 can be connected to the frame base 101 with screws, which can achieve convenient assembly and disassembly, and low maintenance cost and time.

[0032] To sum up, the utility model adopts a combination of screw stroke adjustment and shock-absorbing spring adaptive adjustment. Through the tensioning wheel and shock-absorbing spring follow-up, the track anti-falling mechanism and the follow-up components, the track tensioning self-adjustment and the whole process of preventing the track from breaking and falling off can be realized; the track can be automatically tensioned and relaxed, and the adjustment amount is large. It adopts a combination of manual adjustment and automatic adjustment, has high reliability, ingenious structure, and low manufacturing and maintenance costs.

Claims

1. A self-adjusting tensioning device for a crawler unmanned platform walking system, comprising a tensioning device frame (1) and a tensioning wheel and a follower component (2), wherein the tensioning device frame (1) is connected to the tensioning wheel and the follower component (2) via a shock-absorbing spring self-adjusting mechanism (3), a crawler anti-falling mechanism and a follower component (4), and is characterized in that: The tensioning device frame (1) comprises a frame base (101), on which a fixed guide rail (203) is provided; the tensioning wheel and follower component (2) comprises a tensioning wheel shaft sleeve (202), on which a plurality of fixed guide rails (203) are provided, and tensioning wheels (204) are respectively provided at both ends of the tensioning wheel shaft sleeve (202); the shock-absorbing spring self-adjusting mechanism (3) comprises a shock-absorbing fixed threaded rod (301), one end of the shock-absorbing fixed threaded rod (301) is hingedly connected to a connecting rod by bolts, and a shock-absorbing spring (302) is sleeved on the connecting rod; one end of the connecting rod is connected to the tensioning wheel by bolts and nuts The anti-track-falling mechanism and the follower component (4) comprise an anti-track-falling baffle (402) and a baffle connecting member (403) connected to the anti-track-falling baffle (402); a linear guide slider (401) is connected to the inner side of the baffle connecting member (403); the linear guide slider (401) is connected to the frame base (101) through a linear guide rail (5); the lower end of the baffle connecting member (403) is connected to the tensioning wheel shaft sleeve (202), and the linear guide rail (5) cooperates with the fixed guide rail (203) to work.

2. The self-adjusting tensioning device for the crawler unmanned platform walking system according to claim 1, characterized in that: A frame head stopper (102) is provided at the bottom of the fixed guide rail (203).

3. The self-adjusting tensioning device for the crawler unmanned platform walking system according to claim 1, characterized in that: The tension wheel shaft sleeve (202) is connected to the tension wheel (204) via a tension wheel shaft system, and a bearing end cover (201) is connected to the end of the tension wheel shaft system.

4. The self-adjusting tensioning device for the crawler unmanned platform walking system according to claim 3, characterized in that: The tensioning wheel shaft system comprises a stepped shaft, on which a tensioning wheel shaft bearing (205), a tensioning wheel shaft (206), a tensioning wheel hub bearing (207) and a set screw (208) are sequentially arranged, wherein the tensioning wheel shaft sleeve (202) and the tensioning wheel shaft (206) are coaxially clearance-fitted, and the tensioning wheel shaft bearing (205) and the tensioning wheel shaft (206) are interference-fitted.

5. The self-adjusting tensioning device for the crawler unmanned platform walking system according to claim 4, characterized in that: The tension wheel shaft bearing (205) is connected to the fixed guide rail (203), and the tension wheel shaft (206) is connected to the tension wheel (204).

6. The self-adjusting tensioning device for a crawler unmanned platform walking system according to claim 1, characterized in that: The anti-track-falling blocking piece (402) is connected to the blocking piece connecting member (403) via bolts and nuts.

7. The self-adjusting tensioning device for a crawler unmanned platform walking system according to claim 1, characterized in that: The linear guide rail (5) is connected to the frame base (101) via screws.

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