Telescopic retaining device

Abstract

The utility model relates to the technical field of retaining devices, and provides a telescopic retaining device which comprises a connecting rod, a movable rod penetrates through the side face of the connecting rod, a short column is fixedly connected to the side face of the movable rod, automatic lubricating equipment is arranged on the side face of the connecting rod, and the automatic lubricating equipment comprises a supporting rod. One end of the supporting rod is fixedly connected to the top of the connecting rod, a round plate is fixedly connected to the end, away from the supporting rod, of the electric telescopic rod, an L-shaped rod is fixedly connected to the bottom of the round plate, a thin rod is fixedly connected to the top of the L-shaped rod, and an extrusion rod is fixedly connected to the side face of the thin rod; by means of the technical scheme, the problems that in the prior art, it is difficult to lubricate the movable rod, it is difficult to ensure smooth movement of the movable rod, it is difficult to effectively reduce friction between rod pieces, and it is difficult to prolong the service life of the movable rod are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-retreat devices, and particularly to a telescopic anti-retreat device. Background Art

[0002] A telescopic vehicle tire anti-retreat device is a safety device used to prevent a parked vehicle from moving. It is usually used in sloped parking lots, garages or places where long-term stays are required, aiming to prevent the vehicle from moving under unauthorized or accidental circumstances.

[0003] According to the disclosed telescopic shock absorber (Publication No.: CN 102689575 B), the telescopic shock absorber is particularly used for the wheel suspension structure of a motor vehicle. The shock-absorbing tube of the telescopic shock absorber is fixedly connected to a functional component through a clamping connection structure at the end opposite to the piston rod. In order to simply reinforce in the manufacturing technology in the area of the clamping connection, a bottom section (10a) is directly formed on the shock-absorbing tube (10), and a reinforcing component (16) equivalent to a second bottom, preferably made of metal, is inserted above the bottom section (10a).

[0004] For the telescopic ends of the telescopic anti-retreat device, due to the frequent need for telescoping, when they telescope, the internal parts may come into contact and move with each other, and friction may occur between the contacting surfaces, resulting in corrosion or wear, causing the equipment to operate smoothly. Through the mutual cooperation between components such as the shock-absorbing tube and the piston rod mentioned above, it is difficult to lubricate the moving rod, difficult to ensure the smooth movement of the moving rod, difficult to effectively reduce the friction between the rods, and extend its service life, which needs to be improved. Summary of the Utility Model

[0005] The utility model provides a telescopic anti-retreat device, which solves the problems of the telescopic anti-retreat device in the related art.

[0006] The technical solution of the utility model is as follows: a telescopic backstop comprises a connecting rod, a moving rod is penetrated on the side of the connecting rod, a short column is fixedly connected to the side of the moving rod, an automatic lubrication device is arranged on the side of the connecting rod, and the automatic lubrication device comprises a support rod, one end of the support rod is fixedly connected to the top of the connecting rod, an end of the electric telescopic rod away from the support rod is fixedly connected to a circular plate, the bottom of the circular plate is fixedly connected to an L-shaped rod, a thin rod is fixedly connected to the top of the L-shaped rod, an extrusion rod is fixedly connected to the side of the thin rod, an extrusion block is fixedly connected to the end of the extrusion rod away from the thin rod, a grip rod is fixedly connected to the top of the connecting rod, a control box is fixedly connected to the side of the grip rod, a sliding block is slidably connected to the inner wall of the control box, a fixed block is fixedly connected to the inner wall of the control box, a toggle rod is fixedly connected to the bottom of the sliding block, an end of the toggle rod away from the sliding block is fixedly connected to a triangular block, an oil outlet pipe is penetrated on the side of the control box, and a fixed pile is fixedly connected to the end of the short column away from the moving rod.

[0007] Furthermore, a one-way valve is provided on the top of the oil outlet pipe, a switch is provided on the top of the electric telescopic rod, the triangular block is located on the displacement track of the extrusion block, the oil outlet pipe is located on the top of the moving rod, a clearing pipe is passed through the top of the control box, an oil tank is passed through the end of the clearing pipe away from the control box, and an oil inlet pipe is passed through the top of the oil tank. The design of the one-way valve is conducive to making the oil outlet pipe only discharge oil but not take in oil, thereby facilitating the control of the oil output.

[0008] Furthermore, a spring 1 is fixedly connected to the top of the sliding block, an end of the spring 1 away from the sliding block is fixedly connected to the inner wall of the control box, a limit rod is fixedly connected to the inner wall of the control box, and an end of the limit rod away from the control box passes through the bottom of the sliding block. The design of spring 1 is conducive to the automatic reset of the sliding block when the sliding block is not squeezed.

[0009] Furthermore, a cleaning and anti-blocking device is provided on the side of the connecting rod, and the cleaning and anti-blocking device includes a short plate, the bottom of the short plate is fixedly connected to the top of the circular plate, the side of the short plate is fixedly connected to a driving rod, the side of the connecting rod is fixedly connected to a placing plate, the top of the placing plate is slidably connected to a sliding rod, the top of the sliding rod is fixedly connected to a cylinder, and the side of the sliding rod is fixedly connected to bristles, and the movement of the cylinder will drive the sliding rod to move, and the sliding rod is provided with bristles, and the movement of the sliding rod will drive the bristles to move, and the bristles are located on the side of the moving rod, and the bristles clean the side wall of the moving rod to prevent impurities such as pebbles from being attached to the side wall of the moving rod, which affects the extension and retraction of the moving rod into the inside of the connecting rod, and the cleaning of the side wall can ensure its smooth extension and retraction inside the connecting rod.

[0010] Further, a rectangular groove is formed in the top of the placement plate. A limiting plate is fixedly connected to the side surface of the sliding rod. One end of the limiting plate away from the sliding rod is slidably connected to the inner wall of the rectangular groove. The cylinder is located on the displacement track of the driving rod. The cylinder is located on the movement track of the driving rod. When the driving rod moves, it will drive the cylinder to move. When the cylinder moves, it will drive the sliding rod to move.

[0011] Further, a support plate is fixedly connected to the side surface of the placement plate. A second spring is fixedly connected to the side surface of the support plate. One end of the second spring away from the support plate is fixedly connected to the side surface of the sliding rod. The brush bristles are located on the side surface of the moving rod. The design of the second spring is beneficial for the sliding rod to automatically reset by the elastic force of the second spring when the sliding rod is not driven to move.

[0012] Further, a stabilizing device is arranged on the side surface of the connecting rod. The stabilizing device includes a bracket. A displacement plate is fixedly connected to the side surface of the bracket. A moving plate is slidably connected to the top of the displacement plate. A notch is formed in the bottom of the displacement plate. A triangular plate is fixedly connected to the bottom of the displacement plate. A trigger rod is fixedly connected to the bottom of the moving plate. A chute is formed in the side surface of the triangular plate. An embedding block is slidably connected to the inner wall of the chute. A pushing rod is fixedly connected to the bottom of the L-shaped rod. When the moving plate moves, it will drive the trigger rod to move. The embedding block is located on the movement track of the trigger rod, and it will squeeze and push the embedding block, causing the embedding block to move on the chute of the triangular plate. The triangular plate has a slope from high to low and a chute from high to low. The embedding block being squeezed and pushed will be squeezed and move towards the side close to the ground, causing the embedding block to move from high to low. When it moves to the bottommost position, it will drill the embedding block into the soil, temporarily fixing the entire device in place, making it more stable when fixing the vehicle tire.

[0013] Further, the embedding block is located on the displacement track of the trigger rod. A fixing plate is fixedly connected to the side surface of the embedding block. A vertical rod is fixedly connected to the bottom of the displacement plate. A third spring is fixedly connected to the side surface of the vertical rod. One end of the third spring away from the vertical rod is fixedly connected to the side surface of the fixing plate. The design of the third spring is beneficial for the embedding block to automatically reset when the embedding block is not squeezed.

[0014] Further, there are two fixing plates and third springs, and they are symmetrically arranged along the vertical central axis of the triangular plate. The embedding block is located at the bottom of the displacement plate. A threaded rod is screwed to the top of the connecting rod. A pull ring is fixedly connected to one end of the threaded rod away from the connecting rod. The design of the threaded rod is beneficial for fixing the telescopic movement of the moving rod.

[0015] Further, there are two grip rods, which are symmetric with respect to the vertical central axis of the connecting rod. Wheels are provided on the side surface of the connecting rod, and a bottom plate is fixedly connected to the side surface of the grip rod. There are two short columns and fixing piles, and they are located on the same horizontal line. The two fixing piles are beneficial to clamping and fixing both sides of the wheel simultaneously to prevent the wheel from shifting.

[0016] The working principle and beneficial effects of the present utility model are as follows:

[0017] In the present utility model, through the mutual cooperation among components such as the electric telescopic rod, extrusion block, control box, sliding block, etc. inside the automatic lubrication device, it is realized that inside the control box, there is a baffle composed of a sliding block and two fixed blocks. The lubricating oil transmitted into the control box from the fuel tank through the dredging pipe is stored on this baffle. When the sliding block is squeezed and moved, a gap will be opened in the baffle, enabling the lubricating oil to flow from the baffle to the bottom of the control box. The lubricating oil flowing to the bottom will flow out through the oil outlet pipe. The oil outlet pipe is located above the moving rod, and the flowing lubricating oil will drip onto the top of the moving rod to lubricate the moving rod. Good lubrication can ensure the smooth movement of the moving rod, effectively reduce the friction between the rods, extend its service life, and reduce the wear caused by long-term use.

[0018] In the present utility model, through the mutual cooperation among components such as the driving rod, driving rod, sliding rod, brush bristles, etc. inside the cleaning and anti-blocking device, it is realized that when the sliding rod moves, it will drive the brush bristles to move. The brush bristles are located on the side surface of the moving rod, and the brush bristles clean the side wall of the moving rod to prevent impurities such as small stones from adhering to the side wall of the moving rod, which may affect the telescopic movement of the moving rod into the connecting rod. Side wall cleaning can ensure its smooth telescopic movement inside the connecting rod. The impurities adhering to the side wall may hinder the free movement of the moving rod, and cleaning can avoid this situation and ensure the normal operation and reliability of the backstop.

[0019] In the present utility model, through the mutual cooperation among components such as the bracket, trigger rod, triangular plate, moving plate, etc. inside the stabilizing device, it is realized that the embedded block pushed by extrusion will move towards the side close to the ground under extrusion, causing the embedded block to move from high to low. When it moves to the lowest position, it will drill into the soil, temporarily fixing the entire device in place, making it more stable when fixing the vehicle tire. When the embedded block is pushed and drills into the soil, it provides an additional fixing point, enabling the entire device to be more firmly fixed on the ground. The embedded block can drill into different types of ground, such as soil, sandy soil or lawn, meeting the requirements of various work sites, ensuring the stability and reliability of the backstop. By being pushed and extruded, it fixes itself to the ground, and the additional fixing point enables the backstop to be more firmly anchored to the ground, preventing the wheel from losing stability due to movement or shaking during high-altitude operations. Description of the Drawings

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0022] Figure 2 It is a three-dimensional side view structural diagram of the fixed pile of the utility model;

[0023] Figure 3 It is a three-dimensional side view structural diagram of the support rod of the utility model;

[0024] Figure 4 For this utility model Figure 3 Schematic diagram of the three-dimensional enlarged structure of A in the middle;

[0025] Figure 5 It is a three-dimensional enlarged structural schematic diagram of the control box of the utility model;

[0026] Figure 6 It is a three-dimensional enlarged structural diagram of the sliding rod of the utility model;

[0027] Figure 7 It is a three-dimensional enlarged structural diagram of the connecting rod of the utility model;

[0028] Figure 8 It is a three-dimensional enlarged structural schematic diagram of the embedded block of the utility model.

[0029] In the figure: 1. Connecting rod; 2. Moving rod; 3. Short column; 4. Automatic lubrication device; 41. Support rod; 42. Electric telescopic rod; 43. Switch; 44. Round plate; 45. L-shaped rod; 46. Thin rod; 47. Extrusion rod; 48. Extrusion block; 49. Control box; 410. Toggle rod; 411. Triangular block; 412. Sliding block; 413. Fixed block; 414. Spring 1; 415. Limit rod; 416. Clearing pipe; 417. Oil tank; 418. Oil inlet pipe; 419. Oil outlet pipe; 420. One-way valve; 5. Cleaning and anti-blocking equipment; 51. Short board; 52, driving rod; 53, supporting plate; 54, sliding rod; 55, bristles; 56, rectangular groove; 57, limiting plate; 58, spring two; 59, cylinder; 510, placing plate; 6, stabilizing device; 61, bracket; 62, notch; 63, triangle plate; 64, slide; 65, moving plate; 66, vertical rod; 67, trigger rod; 68, fixed plate; 69, spring three; 610, embedded block; 7, fixed pile; 611, displacement plate; 612, pushing rod; 8, wheel; 9, threaded rod; 10, pull ring; 11, grip rod; 12, bottom plate. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] like Figures 1 to 6 As shown, the present embodiment proposes a telescopic backstop, comprising a connecting rod 1, a moving rod 2 passing through the side of the connecting rod 1, a short column 3 fixedly connected to the side of the moving rod 2, an automatic lubrication device 4 is arranged on the side of the connecting rod 1, and the automatic lubrication device 4 comprises a support rod 41, one end of the support rod 41 is fixedly connected to the top of the connecting rod 1, an electric telescopic rod 42 is fixedly connected to the end away from the support rod 41 with a circular plate 44, an L-shaped rod 45 is fixedly connected to the bottom of the circular plate 44, a thin rod 46 is fixedly connected to the top of the L-shaped rod 45, and an extrusion rod 47 is fixedly connected to the side of the thin rod 46. The end of the rod 47 away from the thin rod 46 is fixedly connected to the extrusion block 48, the top of the connecting rod 1 is fixedly connected to the grip rod 11, the side of the grip rod 11 is fixedly connected to the control box 49, the inner wall of the control box 49 is slidably connected to a sliding block 412, the inner wall of the control box 49 is fixedly connected to a fixed block 413, the bottom of the sliding block 412 is fixedly connected to a toggle rod 410, the end of the toggle rod 410 away from the sliding block 412 is fixedly connected to a triangular block 411, an oil outlet pipe 419 passes through the side of the control box 49, and the end of the short column 3 away from the moving rod 2 is fixedly connected to a fixed pile 7.

[0033] A one-way valve 420 is provided on the top of the oil outlet pipe 419, a switch 43 is provided on the top of the electric telescopic rod 42, the triangular block 411 is located on the displacement track of the extrusion block 48, the oil outlet pipe 419 is located on the top of the moving rod 2, a clearing pipe 416 is passed through the top of the control box 49, an oil tank 417 is passed through the end of the clearing pipe 416 away from the control box 49, and an oil inlet pipe 418 is passed through the top of the oil tank 417. The design of the one-way valve 420 is conducive to making the oil outlet pipe 419 only discharge oil but not take in oil, so as to facilitate the control of the oil output.

[0034] A spring 414 is fixedly connected to the top of the sliding block 412, and one end of the spring 414 away from the sliding block 412 is fixedly connected to the inner wall of the control box 49. A limit rod 415 is fixedly connected to the inner wall of the control box 49, and one end of the limit rod 415 away from the control box 49 passes through the bottom of the sliding block 412. The design of spring 414 is conducive to the automatic reset of the sliding block 412 when the sliding block 412 is not squeezed.

[0035] A cleaning and anti-blocking device 5 is arranged on the side surface of the connecting rod 1. The cleaning and anti-blocking device 5 includes a short board 51. The bottom of the short board 51 is fixedly connected to the top of the round board 44. A driving rod 52 is fixedly connected to the side surface of the short board 51. A placing board 510 is fixedly connected to the side surface of the connecting rod 1. A sliding rod 54 is slidably connected to the top of the placing board 510. A cylinder 59 is fixedly connected to the top of the sliding rod 54. A brush hair 55 is fixedly connected to the side surface of the sliding rod 54. The movement of the cylinder 59 will drive the sliding rod 54 to move. The brush hair 55 is arranged on the sliding rod 54. The movement of the sliding rod 54 will drive the brush hair 55 to move. The brush hair 55 is located on the side surface of the moving rod 2. The brush hair 55 cleans the side wall of the moving rod 2 to prevent impurities such as small stones from adhering to the side wall of the moving rod 2, which affects the telescopic movement of the moving rod 2 into the connecting rod 1. The side wall cleaning can ensure its smooth telescopic movement inside the connecting rod 1.

[0036] A rectangular groove 56 is formed in the top of the placing board 510. A limiting board 57 is fixedly connected to the side surface of the sliding rod 54. One end of the limiting board 57 away from the sliding rod 54 is slidably connected to the inner wall of the rectangular groove 56. The cylinder 59 is located on the displacement track of the driving rod 52. The cylinder 59 is located on the movement track of the driving rod 52. The movement of the driving rod 52 will drive the cylinder 59 to move. The movement of the cylinder 59 will drive the sliding rod 54 to move.

[0037] A support board 53 is fixedly connected to the side surface of the placing board 510. A second spring 58 is fixedly connected to the side surface of the support board 53. One end of the second spring 58 away from the support board 53 is fixedly connected to the side surface of the sliding rod 54. The brush hair 55 is located on the side surface of the moving rod 2. The design of the second spring 58 is beneficial to the automatic reset of the sliding rod 54 by the elastic force of the second spring 58 when the sliding rod 54 is not driven to move.

[0038] In this embodiment, the present application holds two handle bars 11 by hand, pushes the entire device to move by wheels 8, moves the device to the desired position, and places two fixing piles 7 on both sides of the tire respectively, so as to clamp and fix the two sides of the tire. The moving rod 2 runs through the side of the connecting rod 1 and is slidably connected. The length of the moving rod 2 can be adjusted by extending and retracting the moving rod 2, and tires of different widths can be clamped and fixed. The moving rod 2 may become stiff during the frequent extension and retraction process. Manually press the switch 43 to start the electric telescopic rod 42, and the electric telescopic rod 42 will extend and retract. When the electric When the telescopic rod 42 is retracted, it will move toward the side close to the support rod 41, which will drive the circular plate 44 to retract. The retraction of the circular plate 44 will drive the L-shaped rod 45 to move. The movement of the L-shaped rod 45 will drive the thin rod 46 and the extrusion rod 47 to move. The movement of the extrusion rod 47 will drive the extrusion block 48 to move, and all of them will retract toward the side close to the support rod 41. The triangular block 411 is located on the displacement trajectory of the extrusion block 48. During the movement of the extrusion block 48, it will squeeze the triangular block 411. Through the inclined surfaces set on the triangular block 411 and the extrusion block 48, the inclined surfaces of the two are in contact with each other. When the extrusion block 48 is in a moving state, the triangular block 411 will be squeezed. The angle block 411 is squeezed and moves toward the inside of the control box 49. The movement of the triangle block 411 drives the toggle rod 410 to move, so that the toggle rod 410 moves toward the inside of the control box 49. The movement of the toggle rod 410 drives the sliding block 412 to move inside the control box 49. Through the elastic force of the spring 414, when the sliding block 412 is not squeezed, the sliding block 412 can automatically reset. The inside of the control box 49 is a baffle composed of a sliding block 412 and two fixed blocks 413. The lubricating oil transmitted from the oil tank 417 to the inside of the control box 49 through the dredging pipe 416 is stored on this baffle. The oil outlet pipe 419 is located under the baffle, which will prevent the lubricating oil from flowing out. When the sliding block 412 is squeezed and moved, the baffle will open a gap, allowing the lubricating oil to flow from the baffle to the bottom of the control box 49. The lubricating oil flowing to the bottom will flow out through the oil outlet pipe 419. The oil outlet pipe 419 is located above the moving rod 2. The flowing lubricating oil will drip on the top of the moving rod 2 to lubricate the moving rod 2. Lubrication on the top of the moving rod 2, good lubrication can ensure the smooth movement of the moving rod 2, can effectively reduce the friction between the rods, extend its service life, and reduce the wear caused by long-term use.

[0039] The movement of the middle circular plate 44 drives the short plate 51 and the driving rod 52 to move. When it is not necessary to lubricate the moving rod 2, the electric telescopic rod 42 extends towards the side away from the support rod 41. The electric telescopic rod 42 drives the circular plate 44 to extend. The circular plate 44 drives the short plate 51 and the driving rod 52 to extend towards the side away from the support rod 41. The cylinder 59 is located on the movement track of the driving rod 52. The movement of the driving rod 52 drives the cylinder 59 to move. The movement of the cylinder 59 drives the sliding rod 54 to move. A brush 55 is arranged on the sliding rod 54. The movement of the sliding rod 54 drives the brush 55 to move. The brush 55 is located on the side of the moving rod 2. The brush 55 cleans the side wall of the moving rod 2, preventing impurities such as small stones from adhering to the side wall of the moving rod 2, which may affect the telescopic movement of the moving rod 2 into the connecting rod 1. The side wall cleaning can ensure its smooth telescopic movement inside the connecting rod 1. The impurities adhering to the side wall may hinder the free movement of the moving rod 2. Cleaning can avoid this situation and ensure the normal operation and reliability of the backstop.

[0040] Embodiment 2

[0041] As Figures 7 to 8 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that a stabilizing device 6 is arranged on the side of the connecting rod 1. The stabilizing device 6 includes a bracket 61. A displacement plate 611 is fixedly connected to the side of the bracket 61. A moving plate 65 is slidably connected to the top of the displacement plate 611. A notch 62 is opened at the bottom of the displacement plate 611. A triangular plate 63 is fixedly connected to the bottom of the displacement plate 611. A touch rod 67 is fixedly connected to the bottom of the moving plate 65. A sliding groove 64 is opened on the side of the triangular plate 63. An embedded block 610 is slidably connected to the inner wall of the sliding groove 64. A pushing rod 612 is fixedly connected to the bottom of the L-shaped rod 45. The movement of the moving plate 65 drives the touch rod 67 to move. The embedded block 610 is located on the movement track of the touch rod 67, and it will squeeze and push the embedded block 610 to move on the sliding groove 64 of the triangular plate 63. The triangular plate 63 has a slope from high to low and a sliding groove 64 from high to low. The squeezed and pushed embedded block 610 will be squeezed and move towards the side close to the ground, causing the embedded block 610 to move from high to low. When it moves to the lowest point, the embedded block 610 will drill into the soil, temporarily fixing the whole device in place, making it more stable when fixing the car tire.

[0042] The embedded block 610 is located on the displacement track of the touch rod 67. A fixing plate 68 is fixedly connected to the side of the embedded block 610. A vertical rod 66 is fixedly connected to the bottom of the displacement plate 611. A third spring 69 is fixedly connected to the side of the vertical rod 66. The end of the third spring 69 away from the vertical rod 66 is fixedly connected to the side of the fixing plate 68. The design of the third spring 69 is beneficial for the embedded block 610 to automatically reset when it is not squeezed.

[0043] There are two fixing plates 68 and third springs 69, which are symmetrically arranged along the vertical central axis of the triangular plate 63. The embedding block 610 is located at the bottom of the displacement plate 611. The top of the connecting rod 1 is screwed with a threaded rod 9. The end of the threaded rod 9 away from the connecting rod 1 is fixedly connected with a pull ring 10. The design of the threaded rod 9 is beneficial to the telescopic movement of the movable rod 2.

[0044] There are two grip rods 11, which are symmetrically arranged along the vertical central axis of the connecting rod 1. Wheels 8 are arranged on the side surface of the connecting rod 1. The bottom plate 12 is fixedly connected to the side surface of the grip rod 11. There are two short columns 3 and fixing piles 7, and they are located on the same horizontal line. The two fixing piles 7 are beneficial to clamping and fixing both sides of the wheel at the same time to prevent the wheel from shifting.

[0045] In this embodiment, the electric telescopic rod 42 extends outwards from the support rod 41. When the electric telescopic rod 42 extends, it will drive the L-shaped rod 45 to move outwards. When the L-shaped rod 45 moves, it will drive the push rod 612 to move. The moving plate 65 is located on the movement track of the push rod 612. When the push rod 612 moves, it will push the moving plate 65 to move. When the moving plate 65 moves, it will drive the touch rod 67 to move. The embedding block 610 is located on the movement track of the touch rod 67, and it will squeeze and push the embedding block 610 to move on the chute 64 of the triangular plate 63. The triangular plate 63 has a slope from high to low and a chute 64 from high to low. The embedding block 610 being squeezed and pushed will be pushed to move towards the side close to the ground, so that the embedding block 610 moves from high to low. When it moves to the lowest point, the embedding block 610 will drill into the soil, temporarily fixing the whole device in place, making it more stable when fixing the vehicle tire. When the embedding block 610 is pushed and drilled into the soil, it provides an additional fixing point, making the whole device more firmly fixed on the ground. The embedding block 610 can drill into different types of ground, such as soil, sand or lawn, meeting the requirements of various working sites, ensuring the stability and reliability of the anti-retreat device. By being pushed and squeezed, it fixes itself on the ground. The additional fixing point enables the anti-retreat device to be more firmly anchored on the ground, preventing the wheel from losing stability due to movement or shaking during high-altitude operations.

[0046] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. Telescopic backstop, characterized in that, It comprises a connecting rod (1), a moving rod (2) passing through the side of the connecting rod (1), a short column (3) fixedly connected to the side of the moving rod (2), and an automatic lubrication device (4) provided on the side of the connecting rod (1); The automatic lubrication device (4) comprises a support rod (41) and an electric telescopic rod (42), one end of the support rod (41) being fixedly connected to the top of the connecting rod (1), one end of the electric telescopic rod (42) being away from the support rod (41) being fixedly connected to a circular plate (44), the bottom of the circular plate (44) being fixedly connected to an L-shaped rod (45), the top of the L-shaped rod (45) being fixedly connected to a thin rod (46), the side of the thin rod (46) being fixedly connected to an extrusion rod (47), the end of the extrusion rod (47) being away from the thin rod (46) being fixedly connected to an extrusion block (48), and the top of the connecting rod (1) being fixedly connected to the outer surface of the connecting rod (1). A grip rod (11) is fixedly connected to the grip rod (11), a control box (49) is fixedly connected to the side of the grip rod (11), a sliding block (412) is slidably connected to the inner wall of the control box (49), a fixed block (413) is fixedly connected to the inner wall of the control box (49), a toggle rod (410) is fixedly connected to the bottom of the sliding block (412), an end of the toggle rod (410) away from the sliding block (412) is fixedly connected to a triangular block (411), an oil outlet pipe (419) passes through the side of the control box (49), and an end of the short column (3) away from the moving rod (2) is fixedly connected to a fixed pile (7).

2. The telescopic backstop according to claim 1, wherein, A one-way valve (420) is provided at the top of the oil outlet pipe (419), a switch (43) is provided at the top of the electric telescopic rod (42), the triangular block (411) is located on the displacement track of the extrusion block (48), the oil outlet pipe (419) is located at the top of the moving rod (2), a dredging pipe (416) is passed through the top of the control box (49), an oil tank (417) is passed through the end of the dredging pipe (416) away from the control box (49), and an oil inlet pipe (418) is passed through the top of the oil tank (417).

3. The telescopic backstop according to claim 2, wherein A spring 1 (414) is fixedly connected to the top of the sliding block (412); an end of the spring 1 (414) away from the sliding block (412) is fixedly connected to the inner wall of the control box (49); a limit rod (415) is fixedly connected to the inner wall of the control box (49); and an end of the limit rod (415) away from the control box (49) passes through the bottom of the sliding block (412).

4. The telescopic backstop according to claim 3, characterized in that, A cleaning and anti-blocking device (5) is arranged on the side of the connecting rod (1), and the cleaning and anti-blocking device (5) comprises a short plate (51), the bottom of the short plate (51) is fixedly connected to the top of the circular plate (44), the side of the short plate (51) is fixedly connected to a driving rod (52), the side of the connecting rod (1) is fixedly connected to a placement plate (510), the top of the placement plate (510) is slidably connected to a sliding rod (54), the top of the sliding rod (54) is fixedly connected to a cylinder (59), and the side of the sliding rod (54) is fixedly connected to bristles (55).

5. The telescopic backstop according to claim 4, wherein, A rectangular groove (56) is formed at the top of the placement plate (510). A limiting plate (57) is fixedly connected to the side surface of the sliding rod (54). One end of the limiting plate (57) away from the sliding rod (54) is slidably connected to the inner wall of the rectangular groove (56). The cylinder (59) is located on the displacement track of the driving rod (52).

6. The telescopic backstop according to claim 5, characterized in that, A support plate (53) is fixedly connected to the side surface of the placement plate (510). A second spring (58) is fixedly connected to the side surface of the support plate (53). One end of the second spring (58) away from the support plate (53) is fixedly connected to the side surface of the sliding rod (54). The brush bristles (55) are located on the side surface of the moving rod (2).

7. The telescopic backstop according to claim 6, wherein, A stabilizing device (6) is arranged on the side surface of the connecting rod (1). The stabilizing device (6) includes a bracket (61). A displacement plate (611) is fixedly connected to the side surface of the bracket (61). A moving plate (65) is slidably connected to the top of the displacement plate (611). A notch (62) is formed at the bottom of the displacement plate (611). A triangular plate (63) is fixedly connected to the bottom of the displacement plate (611). A touch rod (67) is fixedly connected to the bottom of the moving plate (65). A sliding groove (64) is formed on the side surface of the triangular plate (63). An embedding block (610) is slidably connected to the inner wall of the sliding groove (64). A pushing rod (612) is fixedly connected to the bottom of the L-shaped rod (45).

8. The telescopic backstop according to claim 7, characterized in that, The embedding block (610) is located on the displacement track of the touch rod (67). A fixing plate (68) is fixedly connected to the side surface of the embedding block (610). A vertical rod (66) is fixedly connected to the bottom of the displacement plate (611). A third spring (69) is fixedly connected to the side surface of the vertical rod (66). One end of the third spring (69) away from the vertical rod (66) is fixedly connected to the side surface of the fixing plate (68).

9. The telescopic backstop according to claim 8, wherein, There are two fixing plates (68) and third springs (69), which are symmetrically arranged along the vertical central axis of the triangular plate (63). The embedding block (610) is located at the bottom of the displacement plate (611). A threaded rod (9) is screwed to the top of the connecting rod (1). A pull ring (10) is fixedly connected to one end of the threaded rod (9) away from the connecting rod (1).

10. The telescopic backstop according to claim 9, characterized in that, There are two grip rods (11), which are symmetrically arranged along the vertical central axis of the connecting rod (1). Wheels (8) are arranged on the side surface of the connecting rod (1). A bottom plate (12) is fixedly connected to the side surface of the grip rod (11). There are two short columns (3) and fixed piles (7), and they are located on the same horizontal line.

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