A track vehicle lateral support structure

Abstract

The utility model discloses a kind of for tracked vehicle lateral support structure, it is related to tracked vehicle lateral support technical field, including hydraulic support foot, anti-shrink component;The anti-shrink component includes self-locking unit, unlocking unit.The utility model is provided with anti-shrink component, by the close adhesion of multiple self-locking ball and piston rod outer wall, when the oil pipe of hydraulic support foot leaks due to unexpected situation, the tendency of piston rod has to the inside shrink of hydraulic support foot, the tendency of piston rod relative to self-locking ball moves upward can give the upward thrust of self-locking ball, simultaneously, under the location guiding effect of the extrusion of compression spring and conical ring groove, with the shrink tendency to piston rod direction, by the cooperation of the above multiple forces, multiple self-locking ball can be locked to piston rod, avoid piston rod shrink, in turn make hydraulic support foot can keep stable, provide sufficient processing time for unexpected situation, further improve the safety of aerial work.

Description

Technical Field

[0001] This utility model relates to the field of lateral support technology for tracked vehicles, specifically a lateral support structure for tracked vehicles. Background Technology

[0002] A tracked vehicle is a vehicle or machine that uses a tracked walking mechanism instead of traditional wheels.

[0003] Currently, there is a type of tracked aerial work platform on the market that uses a tracked vehicle as its chassis for transfer. In actual operation, hydraulic outriggers are installed on both sides of the tracked vehicle chassis to achieve leveling. By extending the hydraulic outriggers and contacting the ground for support, the aerial work platform can be kept in a good level state, thereby ensuring operational safety. However, the hydraulic hoses of the outriggers are exposed outside the hydraulic cylinders, and the exposed hoses are prone to damage, leading to hydraulic oil leakage. This can cause the piston rod of the hydraulic outrigger to retract unexpectedly, thus posing a safety hazard for aerial work. Based on this, a lateral support structure for tracked vehicles is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a lateral support structure for tracked vehicles in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lateral support structure for a tracked vehicle, comprising hydraulic outriggers symmetrically fixed to both sides of the tracked vehicle disc, wherein the bottom end of the piston rod of the hydraulic outrigger is connected to a base plate via a ball joint, and an anti-shrinkage component is installed at the bottom of the outer shell of the hydraulic outrigger, wherein the anti-shrinkage component is used to provide a self-locking mechanism for the piston rod of the hydraulic outrigger to prevent the piston rod of the hydraulic outrigger from shrinking due to accident;

[0006] The anti-shrinkage component includes a self-locking unit and an unlocking unit;

[0007] The self-locking unit is used to self-lock the piston rod when the piston rod of the hydraulic outrigger retracts unexpectedly;

[0008] The unlocking unit is used to release the contact between the self-locking unit and the piston rod, thereby allowing the hydraulic outriggers to retract and reset normally.

[0009] As a further embodiment of this utility model: the self-locking unit includes a fixed cylinder seat, a conical annular groove, a self-locking ball, and a compression spring;

[0010] The fixed cylinder seat is fixed to the bottom of the outer shell of the hydraulic support foot and sleeved on the outside of the piston rod of the hydraulic support foot; the conical annular groove is formed on the inner bottom of the fixed cylinder seat.

[0011] The self-locking ball is installed obliquely and slidably inside the conical ring groove, and the compression spring is fixed at the bottom of the inner wall of the conical ring groove and obliquely supports the bottom of the self-locking ball;

[0012] There are multiple groups of the self-locking balls and compression springs arranged annularly. The compression spring is used to provide an upward-inclined thrust for the self-locking ball. Through multiple self-locking balls, they contract upward and fit on the outer side of the piston rod, and are used to provide locking for the upward movement of the piston rod.

[0013] As a further scheme of the present invention: The unlocking unit includes a middle-shaped telescopic groove, a middle-shaped ring block, and an adjusting nut;

[0014] The middle-shaped telescopic groove is opened at the inner top of the fixed cylinder base and communicates with the conical ring groove. Both sides of the middle-shaped telescopic groove penetrate to the outside of the fixed cylinder base;

[0015] The middle-shaped ring block is installed vertically and slidably inside the middle-shaped telescopic groove, and both sides of the middle-shaped ring block protrude to the outside of the fixed cylinder base. The lower surface of the middle-shaped ring block contacts the top of the self-locking ball;

[0016] The outer bottom of the housing of the hydraulic support foot is formed with an external thread. The adjusting nut is threadedly connected to the outside of the external thread, and the bottom of the adjusting nut fits on the top of the part protruding from the outside of the fixed cylinder base;

[0017] When the adjusting nut is screwed down, the middle-shaped ring block moves downward and squeezes multiple self-locking balls to contract obliquely downward, so as to realize the separation of multiple self-locking balls from the piston rod.

[0018] As a further scheme of the present invention: A sealing ring block is fixed at the bottom of the part of the middle-shaped ring block protruding from the outside of the fixed cylinder base, and the sealing ring block is sleeved on the outside of the fixed cylinder base;

[0019] The height of the sealing ring block is greater than the movable height of the middle-shaped ring block.

[0020] As a further scheme of the present invention: A sealing ring is installed at the position where the bottom of the fixed cylinder base contacts the piston rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By incorporating an anti-retraction component, multiple self-locking balls tightly adhere to the outer wall of the piston rod. When the hydraulic outrigger's oil pipe leaks due to an accident, causing the piston rod to tend to retract into the hydraulic outrigger, the piston rod's upward movement relative to the self-locking balls provides an upward thrust to the balls. Simultaneously, under the compression of the pressure spring and the limiting and guiding action of the conical annular groove, the self-locking balls tend to retract towards the piston rod. Through the coordination of these multiple forces, the multiple self-locking balls can lock the piston rod, preventing it from retracting. This allows the hydraulic outrigger to remain stable, providing sufficient time to handle unexpected situations and further improving the safety of high-altitude operations. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a structural distribution diagram of the anti-shrinkage component and hydraulic support legs of this utility model;

[0025] Figure 3 This is a cross-sectional view of the anti-shrinkage component of this utility model;

[0026] Figure 4 This is a cross-sectional view of the anti-shrinkage component of this utility model.

[0027] In the diagram: 1. Tracked chassis; 2. Hydraulic outriggers; 3. Base plate; 4. Anti-shrinkage assembly; 401. Fixed cylinder seat; 402. Conical annular groove; 403. T-shaped telescopic groove; 404. Self-locking ball bearing; 405. Compression spring; 406. T-shaped ring block; 407. Adjusting nut; 408. Sealing ring block; 5. External thread. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 In this embodiment of the utility model, a lateral support structure for a tracked vehicle includes hydraulic support legs 2 symmetrically fixed on both sides of the tracked vehicle disc 1. The bottom end of the piston rod of the hydraulic support leg 2 is connected to a base plate 3 via a ball joint. An anti-shrinkage component 4 is installed at the bottom of the outer shell of the hydraulic support leg 2. The anti-shrinkage component 4 is used to provide a shrinkage self-locking for the piston rod of the hydraulic support leg 2 to prevent the piston rod of the hydraulic support leg 2 from shrinking due to accident.

[0030] The anti-shrinkage component 4 includes a self-locking unit and an unlocking unit;

[0031] The self-locking unit is used to self-lock the piston rod when the piston rod of the hydraulic support leg 2 retracts unexpectedly;

[0032] The unlocking unit is used to release the contact between the self-locking unit and the piston rod, thereby allowing the hydraulic support leg 2 to retract and reset normally.

[0033] The self-locking unit includes a fixed cylinder base 401, a conical annular groove 402, a self-locking ball 404, and a compression spring 405;

[0034] The fixed cylinder seat 401 is fixed to the bottom of the outer shell of the hydraulic support leg 2 and sleeved on the outside of the piston rod of the hydraulic support leg 2. The tapered annular groove 402 is formed on the bottom inner side of the fixed cylinder seat 401.

[0035] The self-locking ball 404 is obliquely slidably installed inside the conical annular groove 402, and the compression spring 405 is fixed to the bottom of the inner wall of the conical annular groove 402 and obliquely supported on the bottom of the self-locking ball 404.

[0036] Multiple sets of self-locking ball bearings 404 and compression springs 405 are arranged in a ring. The compression springs 405 provide an upward thrust to the self-locking ball bearings 404. The multiple self-locking ball bearings 404 retract upward and fit against the outside of the piston rod to lock the upward movement of the piston rod.

[0037] The unlocking unit includes a Chinese character-shaped telescopic groove 403, a Chinese character-shaped ring block 406, and an adjusting nut 407;

[0038] The T-shaped telescopic groove 403 is opened on the inner top of the fixed cylinder base 401 and communicates with the conical annular groove 402. The two sides of the T-shaped telescopic groove 403 extend to the outer side of the fixed cylinder base 401.

[0039] The Chinese character-shaped ring block 406 is vertically slidably installed inside the Chinese character-shaped telescopic groove 403, and the two sides of the Chinese character-shaped ring block 406 protrude to the outside of the fixed cylinder seat 401. The lower surface of the Chinese character-shaped ring block 406 contacts the top of the self-locking ball 404.

[0040] The outer side of the bottom of the hydraulic support leg 2 is formed with external thread 5. The adjusting nut 407 is threaded to the outside of the external thread 5, and the bottom of the adjusting nut 407 is in contact with the top of the part of 506 that protrudes from the outside of the fixed cylinder 401.

[0041] When the adjusting nut 407 is turned downwards, the U-shaped ring block 406 moves downwards and squeezes multiple self-locking balls 404 to tilt downwards and retract, thereby separating the multiple self-locking balls 404 from the piston rod.

[0042] In this embodiment, it should be noted that the tracked vehicle platform 1 is equipped with a hydraulic system that provides extension and retraction control for the hydraulic outriggers 2. This is a conventional control structure for existing hydraulic outriggers 2, so it will not be described in detail here.

[0043] In normal operation, the adjusting nut 407 presses the U-shaped ring block 406 down to its lowest position. At this time, multiple self-locking ball bearings 404 tilt and retract into the conical ring groove 402, and the multiple self-locking ball bearings 404 do not contact the piston rod of the hydraulic support leg 2 (e.g., Figure 3 At this time, the hydraulic outrigger 2 can extend and retract normally. After the tracked vehicle platform 1 moves to the designated position, the independently controllable hydraulic outrigger 2 can extend and retract, so that the bottom plate 3 contacts and presses with the ground, thereby realizing the leveling operation of the tracked vehicle platform 1 and providing stable support for the aerial work platform carried on the tracked vehicle platform 1.

[0044] After the hydraulic support foot 2 is adjusted, manually loosen the adjusting nut 407 upwards. At this time, under the elastic force of the compression spring 405, the self-locking ball 404 moves upwards along the trajectory of the inner wall of the conical annular groove 402. Finally, the multiple self-locking balls 404 are tightly fitted with the outer wall of the piston rod. (It should be noted that a partition is fixed on the inner side of the conical annular groove 402 between two adjacent self-locking balls 404. See...) Figure 4 (This is used to provide lateral limiting for the self-locking ball 404), and the Chinese-shaped ring block 406 is lifted and moved upward by the self-locking ball 404;

[0045] By tightly fitting multiple self-locking ball bearings 404 to the outer wall of the piston rod, when the oil pipe of the hydraulic outrigger 2 leaks due to an accident, causing the piston rod to tend to retract into the hydraulic outrigger 2, the upward movement of the piston rod relative to the self-locking ball bearings 404 can provide an upward thrust to the self-locking ball bearings 404. At the same time, under the compression of the compression spring 305 and the limiting and guiding action of the conical annular groove 402, the self-locking ball bearings 404 have a tendency to retract towards the piston rod. Through the cooperation of the above multiple forces, the multiple self-locking ball bearings 404 can lock the piston rod, preventing the piston rod from retracting, thereby enabling the hydraulic outrigger 2 to remain stable, providing sufficient time to deal with accidents, and further improving the safety of high-altitude operations.

[0046] It should also be noted that when the hydraulic support leg 2 is retracted normally, the adjusting nut 407 should be turned downwards first to make the U-shaped ring block 406 move down and squeeze the self-locking ball 404 to tilt and move down.

[0047] Please refer to this carefully. Figures 1-4 A sealing ring block 408 is fixed to the bottom of the protruding part of the fixed cylinder base 401. The sealing ring block 408 is sleeved on the outside of the fixed cylinder base 401.

[0048] The height of the blocking ring block 408 is greater than the movable height of the T-shaped ring block 406;

[0049] A sealing ring is installed at the bottom of the fixed cylinder seat 401 where it contacts the piston rod.

[0050] In this embodiment: after the Chinese character-shaped ring block 406 moves upward, the sealing ring block 408 can seal the opening of the Chinese character-shaped telescopic groove 403 to prevent external impurities from entering the interior of the fixed cylinder seat 201. At the same time, the sealing ring at the bottom of the fixed cylinder seat 201 is also to prevent impurities from entering the interior of the fixed cylinder seat 201.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lateral support structure for a tracked vehicle, comprising hydraulic support legs (2) symmetrically fixed to both sides of the tracked vehicle disc (1), wherein the bottom end of the piston rod of the hydraulic support leg (2) is connected to a base plate (3) via a ball joint, characterized in that, The bottom of the housing of the hydraulic foot (2) is equipped with an anti-shrinkage component (4), which is used to provide a shrinkage self-locking for the piston rod of the hydraulic foot (2) to prevent the piston rod of the hydraulic foot (2) from shrinking accidentally. The anti-shrinkage component (4) includes a self-locking unit and an unlocking unit; The self-locking unit is used to self-lock the piston rod when the piston rod of the hydraulic support (2) retracts unexpectedly; The unlocking unit is used to release the contact between the self-locking unit and the piston rod, so that the hydraulic support leg (2) can retract and reset normally.

2. The lateral support structure for a tracked vehicle according to claim 1, characterized in that, The self-locking unit includes a fixed cylinder seat (401), a conical annular groove (402), a self-locking ball (404), and a compression spring (405). The fixed cylinder seat (401) is fixed to the bottom of the outer shell of the hydraulic support foot (2) and sleeved on the outside of the piston rod of the hydraulic support foot (2). The conical annular groove (402) is formed on the bottom of the inner side of the fixed cylinder seat (401). The self-locking ball (404) is obliquely slidably installed inside the conical annular groove (402), and the compression spring (405) is fixed to the bottom of the inner wall of the conical annular groove (402) and obliquely supported on the bottom of the self-locking ball (404); The self-locking ball (404) and the compression spring (405) are arranged in multiple sets in a ring. The compression spring (405) is used to provide an upward thrust to the self-locking ball (404). The multiple self-locking balls (404) retract upward and fit against the outside of the piston rod to lock the upward movement of the piston rod.

3. The lateral support structure for a tracked vehicle according to claim 2, characterized in that, The unlocking unit includes a Chinese-shaped telescopic groove (403), a Chinese-shaped ring block (406), and an adjusting nut (407); The Chinese-shaped telescopic groove (403) is opened on the inner top of the fixed cylinder seat (401) and communicates with the conical annular groove (402). The two sides of the Chinese-shaped telescopic groove (403) extend to the outer side of the fixed cylinder seat (401). The Chinese character-shaped ring block (406) is vertically slidably installed inside the Chinese character-shaped telescopic groove (403), and the two sides of the Chinese character-shaped ring block (406) protrude to the outside of the fixed cylinder seat (401). The lower surface of the Chinese character-shaped ring block (406) contacts the top of the self-locking ball (404). The outer side of the bottom of the hydraulic support foot (2) is formed with an external thread (5), the adjusting nut (407) is threaded to the outside of the external thread (5), and the bottom of the adjusting nut (407) is in contact with the top of the part (506) that protrudes from the outside of the fixed cylinder seat (401). By turning the adjusting nut (407) downward, the U-shaped ring block (406) moves down and squeezes multiple self-locking balls (404) to tilt and contract downward, thereby separating multiple self-locking balls (404) from the piston rod.

4. The lateral support structure for a tracked vehicle according to claim 3, characterized in that, The bottom of the protruding part of the fixed cylinder base (401) of the Chinese character-shaped ring block (406) is fixed with a sealing ring block (408), and the sealing ring block (408) is sleeved on the outside of the fixed cylinder base (401); The height of the sealing ring block (408) is greater than the movable height of the T-shaped ring block (406).

5. A lateral support structure for a tracked vehicle according to claim 2, characterized in that, A sealing ring is installed at the bottom of the fixed cylinder seat (401) where it contacts the piston rod.

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