Self-moving tail rail mechanism

By designing the sliding sleeper assembly and slide rail assembly of the tail track mechanism of the self-moving machine, the combined structure of the baffle and the bidirectional oil cylinder is used to solve the fault problem caused by the entry of impurities in the mine environment, the safety performance and service life of the equipment are improved, and stable movement and horizontal deviation adjustment are achieved.

CN222947581UActive Publication Date: 2025-06-06GUIZHOU YONGGUI ELECTROMECHANICAL MFG & REPAIR CO LTD
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Patent Information

Application Number
CN202421730094.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-06-06
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

When used in the mine environment, the existing self-moving tail is prone to blockage or failure of the lifting mechanism due to impurities such as gravel entering the inside of the frame, which affects the safety performance and service life of the equipment.

Method used

A self-moving tail track mechanism is designed, including a tail frame, a sliding pillow assembly and a sliding rail assembly. The front and rear sides of the bottom plate of the sliding pillow assembly are provided with baffles, which can prevent impurities from entering when the tail frame moves forward; the position of the tail frame is adjusted by adjusting the position of the tail frame by two-way oil cylinders to achieve horizontal adjustment and step-by-step movement of the tail.

Benefits of technology

It effectively avoids impurities such as gravel into the frame, improves the safety performance and service life of the tail track mechanism of the self-moving machine, and at the same time achieves stable movement and horizontal adjustment of the tail.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of mining equipment, in particular to a self-moving machine tail track mechanism which comprises a machine tail rack, a ram assembly and a sliding rail assembly, the ram assembly is provided with a bottom plate, and when the sliding rail assembly slides forwards, the bottom plate serves as a bottom support of the machine tail rack and supports the machine tail rack; when the machine tail rack slides forwards, the bottom plate can be separated from the ground along with lifting of the machine tail rack and move along with forward sliding of the machine tail rack. Baffles are respectively arranged on the front and rear sides of the bottom plate; when the machine tail rack moves forwards, impurities on the moving path can be prevented from entering the bottom plate, and therefore hydraulic components on the machine tail rack are protected. The two-way oil cylinder is arranged on the bottom plate, the position of the machine tail rack can be adjusted through the two-way oil cylinder, and therefore horizontal deviation adjustment of the machine tail rack is achieved. Through the design of the structure, stepping type movement and horizontal deviation adjustment of the self-moving tail can be achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a self-moving tail track mechanism. Background Art

[0002] The walking self-moving tail is a commonly used mechanical equipment in mines. The main function of the walking self-moving tail is to move forward with the advancement of the excavation equipment while the excavation face is working normally, so as to realize the automatic movement of the tail. The walking self-moving tail is the intermediate connection equipment between the transfer machine and the belt conveyor. It replaces the load-bearing section of the tail of the traditional belt conveyor, reduces the tensioning and adjustment times of the belt conveyor, meets the needs of high-yield, high-efficiency and rapid advancement of the working face, and ensures the smooth and connected transportation and transfer of coal mines. It has been widely used in the mining field.

[0003] When the existing self-moving tail is working, the hydraulic system is usually used to control the lifting and movement of the equipment. During the self-moving process, the frame of the self-moving tail is first lifted as a whole by the lifting cylinder, and then the push cylinder is extended to push the frame forward by friction. After moving into place, the lifting cylinder retracts and the frame falls to the ground, ready for the next self-moving cycle. Due to the complex environment of the mine tunnel, when the frame is lifted, lifted, or slid, impurities such as gravel enter the frame, causing some lifting mechanisms to be blocked or other failures to occur. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a self-moving tail track mechanism, which can prevent impurities such as gravel from entering the interior of the frame, thereby improving the safety performance and service life of the self-moving tail track mechanism.

[0005] A self-moving tail track mechanism according to an embodiment of the utility model includes:

[0006] A tail frame, wherein a crossbeam is arranged on the tail frame;

[0007] A ram assembly, wherein the ram assembly is provided with a bottom plate, and baffles are respectively provided on the front and rear sides of the bottom plate; a bidirectional oil cylinder is provided on the bottom plate, and fixed seats are respectively provided on both sides of the bidirectional oil cylinder, the fixed seats are slidably connected to the bottom plate, and the fixed seats are fixedly connected to the tail frame;

[0008] A slide rail assembly is arranged on both sides of the tail frame, and the slide rail assembly is provided with a lifting cylinder, the upper end of the lifting cylinder is connected to the cross beam, and the lower end of the lifting cylinder is hinged to the track wheel set.

[0009] According to some embodiments of the utility model, it also includes a secondary slide group, the slide assembly and the secondary slide group are alternately arranged on the tail frame, the secondary slide group is provided with the base plate, the fixed seat and the support shaft, the fixed seat and the support shaft are slidably connected, the support shaft and the tail frame are fixedly connected, and the base plate and the fixed seat are fixedly connected.

[0010] According to some embodiments of the utility model, an ear plate is provided on the bottom plate, a connecting shaft is provided in the middle of the bidirectional oil cylinder, and the connecting shaft and the ear plate are rotatably connected.

[0011] According to some embodiments of the utility model, the bidirectional oil cylinder includes a cylinder rod, an outer cylinder body, and a piston; the cylinder rod is slidably arranged in the outer cylinder body, and the piston is sleeved on the cylinder rod; the piston divides the interior of the outer cylinder body into a first cavity and a second cavity, and the outer cylinder body is provided with a first oil hole and a second oil hole, the first oil hole is connected to the first cavity, and the second oil hole is connected to the second cavity.

[0012] According to some embodiments of the present invention, when the center of gravity of the cylinder rod coincides with the center of gravity of the outer cylinder, the piston deviates from the geometric center of the cylinder rod, and the volume of the first cavity is the same as the volume of the second cavity.

[0013] According to some embodiments of the present invention, sealing sleeves and end covers are respectively provided at both ends of the outer cylinder.

[0014] According to some embodiments of the utility model, both ends of the cylinder rod are connected to the fixing seat through a fisheye joint bearing.

[0015] According to some embodiments of the present invention, a plurality of reinforcing ribs are provided at the connection between the bottom plate and the baffle.

[0016] According to some embodiments of the utility model, the slide rail assembly also includes a mounting seat, the upper end of the lifting cylinder is rotatably connected to the mounting seat, and the mounting seat is fixedly connected to the crossbeam; the track wheel set is slidably connected to the mounting seat along the vertical direction.

[0017] According to some embodiments of the utility model, the track wheel group includes a roller, a guide rail, and a track wheel seat; guide grooves are respectively provided at both ends of the guide rail, and a clamping plate is provided on the mounting seat, and the clamping plate is inserted into the guide groove; the upper end of the track wheel seat is slidingly connected to the mounting seat, and the track wheel seat and the roller are rotatably connected.

[0018] A self-moving tail track mechanism according to an embodiment of the utility model has at least the following beneficial effects:

[0019] According to the scheme of the utility model, the self-moving tail rail mechanism includes a tail frame, a ram assembly and a slide rail assembly. The ram assembly is provided with a bottom plate. When the slide rail assembly slides forward, the bottom plate serves as the bottom support of the tail frame to support the tail frame. When the tail frame slides forward, the bottom plate can be separated from the ground as the tail frame is lifted, and move as the tail frame slides forward. Baffles are respectively provided on the front and rear sides of the bottom plate. When the tail frame moves forward, impurities on the moving path can be blocked from entering the bottom plate, thereby providing protection for the hydraulic components on the tail frame. A two-way oil cylinder is provided on the bottom plate. Fixed seats are respectively provided on both sides of the two-way oil cylinder. The fixed seat is slidably connected to the bottom plate, and the fixed seat is fixedly connected to the tail frame. When the slide rail assembly slides forward, the position of the tail frame can be adjusted by the two-way oil cylinder, thereby realizing the horizontal deviation adjustment of the tail frame. In this solution, the slide rail assembly is arranged on both sides of the tail frame, and the slide rail assembly is provided with a lifting cylinder, the upper end of the lifting cylinder is rotatably connected to the crossbeam, and the lower end of the lifting cylinder is hinged to the track wheel assembly. The slide rail assembly and the tail frame are relatively fixed, and the slide rail assembly can be adjusted by adjusting the tail frame through the two-way cylinder. Thereby controlling the moving direction of the tail frame. Through the design of this structure, the step-by-step movement and horizontal deviation adjustment of the self-moving tail can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of a top view of the structure of the ram assembly of the utility model;

[0022] Figure 3 It is a side view structural schematic diagram of the ram assembly of the utility model;

[0023] Figure 4 A schematic cross-sectional structure diagram of a ram assembly of the utility model;

[0024] Figure 5 A schematic diagram of the structure of a bidirectional oil cylinder of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the slide rail assembly of the utility model.

[0026] In the figure:

[0027] 100-tail frame, 110-crossbeam;

[0028] 200-sliding ram assembly, 201-auxiliary sliding ram assembly, 202-supporting shaft, 210-bottom plate, 211-ear plate, 212-baffle, 213-reinforcement rib, 220-bidirectional oil cylinder, 221-connecting shaft, 222-cylinder rod, 223-outer cylinder, 224-piston, 225-first cavity, 226-second cavity, 227-first oil hole, 228-second oil hole, 230-fixed seat, 240-sealing sleeve, 250-end cover;

[0029] 300-slide rail assembly, 310-lifting cylinder, 320-track wheel assembly, 321-roller, 322-guide rail, 333-track wheel seat, 334-guide groove, 350-fisheye spherical bearing, 360-mounting seat. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 6As shown, the utility model discloses a self-moving tail track mechanism, which includes a tail frame 100, a ram assembly 200 and a slide rail assembly 300, wherein a cross beam 110 is arranged on the tail frame 100; the ram assembly 200 is provided with a base plate 210, and baffles 212 are respectively arranged on the front and rear sides of the base plate 210; a two-way oil cylinder 220 is arranged on the base plate 210, and fixed seats 230 are respectively arranged on both sides of the two-way oil cylinder 220, the fixed seat 230 is slidably connected to the base plate 210, and the fixed seat 230 is fixedly connected to the tail frame 100; the slide rail assembly 300 is arranged on both sides of the tail frame 100, and the slide rail assembly 300 is provided with a lifting cylinder 310, the upper end of the lifting cylinder 310 is connected to the cross beam 110, and the lower end of the lifting cylinder 310 is hinged to the track wheel group 320.

[0035] Specifically, in the present embodiment, the tail rail mechanism includes a tail frame 100, a ram assembly 200 and a rail assembly 300. The ram assembly 200 is provided with a base plate 210. When the rail assembly 300 slides forward, the base plate 210 serves as the bottom support of the tail frame 100 to support the tail frame 100. When the tail frame 100 slides forward, the base plate 210 can be detached from the ground as the tail frame 100 is lifted, and move as the tail frame 100 slides forward. Baffles 212 are respectively provided on the front and rear sides of the bottom plate 210. The baffles 212 and the horizontal plane form an angle. The bottom plate 210 and the baffles 212 can be welded in an integrated manner to form a sled structure, which can not only form a stable support, but also prevent impurities on the moving path from entering the bottom plate 210 when the tail frame 100 moves forward, thereby protecting the hydraulic components on the tail frame 100. In addition, by adjusting the height of the bottom plate 210, when the ram assembly 200 moves forward, the bottom plate 210 and the baffles can be used to prevent impurities on the moving path from entering the bottom plate 210. The plate 212 levels the ground on the moving path. In this embodiment, the front and rear sides of the bottom plate 210 are the two sides of the length direction of the tail frame 100. A two-way oil cylinder 220 is provided on the bottom plate 210. A fixing seat 230 is provided on both sides of the two-way oil cylinder 220. The fixing seat 230 is slidably connected to the bottom plate 210, and the fixing seat 230 is fixedly connected to the tail frame 100. When the slide rail assembly 300 slides forward, the position of the tail frame 100 can be adjusted by the two-way oil cylinder 220, so as to realize the horizontal deviation adjustment of the tail frame 100. In this embodiment, the slide rail assembly 300 is provided on both sides of the tail frame 100. The slide rail assembly 300 is provided with a lifting oil cylinder 310. The upper end of the lifting oil cylinder 310 is rotatably connected to the cross beam 110, and the lower end of the lifting oil cylinder 310 is hinged to the track wheel group 320. The slide rail assembly 300 and the tail frame 100 are relatively fixed, and the horizontal direction of the slide rail assembly 300 can be controlled by adjusting the tail frame 100 through the bidirectional oil cylinder 220. Thus, the moving direction of the tail frame 100 is controlled. Through the design of this structure, the step-by-step movement and horizontal deviation adjustment of the self-moving tail can be realized.

[0036] In some embodiments of the utility model, a secondary ram assembly 201 is also included. The ram assembly 200 and the secondary ram assembly 201 are alternately arranged on the tail frame 100. The secondary ram assembly 201 is provided with a bottom plate 210, a fixing seat 230 and a support shaft 202. The fixing seat 230 and the support shaft 202 are slidably connected. The support shaft 202 and the tail frame 100 are fixedly connected. The bottom plate 210 and the fixing seat 230 are fixedly connected. In this embodiment, the secondary ram assembly 201 is not provided with a bidirectional oil cylinder 220. The secondary ram assembly 201 and the tail frame 100 are fixedly connected and only serve as the bottom support of the tail frame 100. Through the design of this structure, the number of bidirectional oil cylinders 220 can be reduced, thereby reducing the production cost of the equipment. Specifically, in this embodiment, the ram assembly 200 and the auxiliary ram group 201 can be evenly arranged on the tail frame 100 in an alternating manner, and one or more auxiliary ram groups 201 can be arranged between two adjacent ram assemblies 200. The specific arrangement structure can be arranged according to the overall weight and structural strength of the tail frame 100 and the driving force of the bidirectional oil cylinder 220. Through the design of this structure, the production cost of the equipment can be controlled to the maximum extent while ensuring the driving force of the bidirectional oil cylinder 220.

[0037] In some embodiments of the utility model, a lug plate 211 is provided on the bottom plate 210, a connecting shaft 221 is provided in the middle of the bidirectional oil cylinder 220, and the connecting shaft 221 and the lug plate 211 are rotatably connected. In this embodiment, the ram assembly 200 includes a bottom plate 210, a baffle 212, a bidirectional oil cylinder 220 and a fixing seat 230; wherein, a lug plate 211 is provided on the bottom plate 210, a connecting shaft 221 is provided on the side wall of the bidirectional oil cylinder 220, the axis of the connecting shaft 221 and the axis of the bidirectional oil cylinder 220 are perpendicular to each other, and the connecting shaft 221 can be fixed to the side wall of the bidirectional oil cylinder 220 by welding. The bidirectional oil cylinder 220 is rotatably connected by the connecting shaft 221 and the lug plate 211, which can improve the degree of freedom of the bidirectional oil cylinder 220 and prevent the bidirectional oil cylinder 220 from getting stuck when controlling the sliding of the fixing seat 230.

[0038] In some embodiments of the utility model, the bidirectional oil cylinder 220 includes a cylinder rod 222, an outer cylinder body 223, and a piston 224; the cylinder rod 222 is slidably arranged in the outer cylinder body 223, and the piston 224 is sleeved on the cylinder rod 222; the piston 224 divides the interior of the outer cylinder body 223 into a first cavity 225 and a second cavity 226, and the outer cylinder body 223 is provided with a first oil hole 227 and a second oil hole 228, the first oil hole 227 is connected to the first cavity 225, and the second oil hole 228 is connected to the second cavity 226. Specifically, in this embodiment, both sides of the outer cylinder 223 are opened, and the cylinder rod 222 is slidably arranged in the outer cylinder 223. In this embodiment, the cylinder rod 222 is made of a material with good comprehensive mechanical properties, such as 40Cr steel. The length of the cylinder rod 222 is fixed, and both sides of the cylinder rod 222 are respectively connected to the fixed seat 230, and the fixed seat 230 is slidably connected to the bottom plate 210. When the cylinder rod 222 drives the fixed seat 230 to move, the relative distance between the fixed seats 230 on both sides of the two-way oil cylinder 220 can be kept unchanged, so that the tail frame 100 can be controlled to adjust the offset in the horizontal direction. During operation, the hydraulic oil can be injected into or extracted from the first cavity 225 or the second cavity 226 through the first oil hole 227 and the second oil hole 228, thereby providing thrust to the piston 224, and then controlling the cylinder rod 222 to slide axially in the outer cylinder 223. Through the design of this structure, the control accuracy is high and the adjustability is good.

[0039] In some embodiments of the utility model, when the center of gravity of the cylinder rod 222 coincides with the center of gravity of the outer cylinder body 223, the piston 224 deviates from the geometric center of the cylinder rod 222, and the volume of the first cavity 225 is the same as the volume of the second cavity 226. In this embodiment, the piston 224 of the bidirectional oil cylinder 220 adopts an asymmetric design. In the initial state, the cylinder rod 222 is slidably installed inside the outer cylinder body 223, the center of gravity of the cylinder rod 222 coincides with the center of gravity of the outer cylinder body 223, the extension lengths of both ends of the cylinder rod 222 are equal, and at this time, the volume of the first cavity 225 is the same as the volume of the second cavity 226. Specifically, in this embodiment, a sleeve can be provided on one side of the piston 224, and the volume of the sleeve is equal to the volume difference between the first cavity 225 and the second cavity 226 caused by the displacement of the piston 224, so as to fill part of the space in the first cavity 225, thereby ensuring that in the initial state, the volumes of the first cavity 225 and the second cavity 226 are equal. Through the design of this structure, the hidden dangers of the cylinder rod 222 of the bidirectional oil cylinder 220 getting stuck and unable to recover when it moves to the extreme position can be reduced.

[0040] In some embodiments of the utility model, a sealing sleeve 240 and an end cover 250 are respectively provided at both ends of the outer cylinder 223. By providing the sealing sleeve 240, the sealing effect of the outer cylinder 223 can be ensured, the hydraulic oil can be prevented from leaking, and external contaminants can be prevented from entering the inner part of the outer cylinder 223. The sealing sleeve 240 is usually made of elastic material, and can provide a dynamic sealing effect when the cylinder rod 222 moves, and maintain the pressure and cleanliness inside the outer cylinder 223. The end cover 250 is provided at the ends of both ends of the outer cylinder 223, and can play the role of closing both ends of the outer cylinder 223. The end cover 250 cooperates with the sealing sleeve 240 to ensure the sealing inside the outer cylinder 223. In addition, the end cover 250 can also provide a supporting role to ensure the coaxiality of the cylinder rod 222 and the outer cylinder 223, and avoid sealing failure or premature wear caused by offset.

[0041] In some embodiments of the utility model, the two ends of the cylinder rod 222 are connected by a fisheye joint bearing 350 and a fixed seat 230 respectively. By arranging the fisheye joint bearings 350 at both ends of the cylinder rod 222, it has good self-aligning ability, high load-bearing capacity and impact resistance. The fisheye joint bearing 350 can not only adapt to the offset of the motion axis, but also can work stably under a variety of complex motion states, effectively reducing vibration and noise. In addition, the fisheye joint bearing 350 also has good self-lubricating properties and environmental adaptability, so that the two-way oil cylinder 220 can adapt to harsh environments during movement, thereby increasing the service life of the two-way oil cylinder 220.

[0042] In some embodiments of the utility model, a plurality of reinforcing ribs 213 are provided at the connection between the bottom plate 210 and the baffle plate 212. In this embodiment, baffle plates 212 are provided at the front and rear sides of the bottom plate 210, respectively, and the baffle plates 212 and the horizontal plane have an angle. The bottom plate 210 and the baffle plate 212 can adopt an integrated welding structure to form a skid structure, which can not only form a stable support, but also prevent impurities on the moving path from entering the bottom plate 210 when the tail frame 100 moves forward, thereby providing protection for the hydraulic components on the tail frame 100. By providing a plurality of reinforcing ribs 213 at the connection between the bottom plate 210 and the baffle plate 212, the structural strength of the baffle plate 212 can be further improved.

[0043] In some embodiments of the utility model, the slide rail assembly 300 further includes a mounting seat 360, the upper end of the lifting cylinder 310 is rotatably connected to the mounting seat 360, and the mounting seat 360 is fixedly connected to the crossbeam 110; the track wheel assembly 320 is slidably connected to the mounting seat 360 along the vertical direction. In this embodiment, multiple sets of slide rail assemblies 300 are provided, and the multiple sets of slide rail assemblies 300 are symmetrically arranged on both sides of the length direction of the tail frame 100. By providing the mounting seat 360, the lifting cylinder 310 can be protected.

[0044] In some embodiments of the utility model, the track wheel assembly 320 includes a roller 321, a guide rail 322, and a track wheel seat 333; guide grooves 334 are respectively provided at both ends of the guide rail 322, and a clamping plate 335 is provided on the mounting seat 360, and the clamping plate 335 is inserted into the guide groove 334; the upper end of the track wheel seat 333 is slidably connected to the mounting seat 360, and the track wheel seat 333 is rotatably connected to the roller 321. In this embodiment, when the lifting cylinder 310 is extended or shortened, the relative position of the slide rail assembly 300 and the ram assembly 200 can be controlled. When the lifting rail is gradually lifted, the guide rail 322 can be lifted off the ground through the clamping plate 335. Through the design of this structure, the tail frame 100 can be moved in a step-by-step manner.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A self-moving tail track mechanism, characterized in that: include: A tail frame (100), wherein a crossbeam (110) is arranged on the tail frame (100); A ram assembly (200), wherein the ram assembly (200) is provided with a bottom plate (210), and baffles (212) are respectively provided on the front and rear sides of the bottom plate (210); a bidirectional oil cylinder (220) is provided on the bottom plate (210), and fixed seats (230) are respectively provided on the two sides of the bidirectional oil cylinder (220), the fixed seat (230) and the bottom plate (210) are slidably connected, and the fixed seat (230) and the tail frame (100) are fixedly connected; A slide rail assembly (300) is arranged on both sides of the tail frame (100), and the slide rail assembly (300) is provided with a lifting cylinder (310), the upper end of the lifting cylinder (310) is connected to the crossbeam (110), and the lower end of the lifting cylinder (310) is hinged to a track wheel assembly (320).

2. The self-moving tail track mechanism according to claim 1, characterized in that: The invention also comprises an auxiliary ram group (201), wherein the ram assembly (200) and the auxiliary ram group (201) are alternately arranged on the tail frame (100), the auxiliary ram group (201) is provided with the base plate (210), the fixing seat (230) and the support shaft (202), the fixing seat (230) and the support shaft (202) are slidably connected, the support shaft (202) and the tail frame (100) are fixedly connected, and the base plate (210) and the fixing seat (230) are fixedly connected.

3. The self-moving tail track mechanism according to claim 2, characterized in that: A lug plate (211) is arranged on the bottom plate (210), a connecting shaft (221) is arranged in the middle of the bidirectional oil cylinder (220), and the connecting shaft (221) and the lug plate (211) are rotatably connected.

4. The self-moving tail track mechanism according to claim 3, characterized in that: The bidirectional oil cylinder (220) comprises a cylinder rod (222), an outer cylinder body (223), and a piston (224); the cylinder rod (222) is slidably arranged in the outer cylinder body (223), and the piston (224) is sleeved on the cylinder rod (222); the piston (224) divides the interior of the outer cylinder body (223) into a first cavity (225) and a second cavity (226); the outer cylinder body (223) is provided with a first oil hole (227) and a second oil hole (228); the first oil hole (227) is communicated with the first cavity (225), and the second oil hole (228) is communicated with the second cavity (226).

5. The self-moving tail track mechanism according to claim 4, characterized in that: When the center of gravity of the cylinder rod (222) coincides with the center of gravity of the outer cylinder body (223), the piston (224) deviates from the geometric center of the cylinder rod (222), and the volume of the first cavity (225) is the same as the volume of the second cavity (226).

6. The self-moving tail track mechanism according to claim 5, characterized in that: The two ends of the outer cylinder (223) are respectively provided with a sealing sleeve (240) and an end cover (250).

7. The self-moving tail track mechanism according to claim 6, characterized in that: Both ends of the cylinder rod (222) are connected to the fixing seat (230) via a fisheye joint bearing (350) respectively.

8. The self-moving tail track mechanism according to claim 1, characterized in that: A plurality of reinforcing ribs (213) are provided at the connection between the bottom plate (210) and the baffle plate (212).

9. The self-moving tail track mechanism according to claim 1, characterized in that: The slide rail assembly (300) further comprises a mounting seat (360), the upper end of the lifting cylinder (310) is rotatably connected to the mounting seat (360), the mounting seat (360) is fixedly connected to the crossbeam (110), and the track wheel assembly (320) is slidably connected to the mounting seat (360) along a vertical direction.

10. The self-moving tail track mechanism according to claim 9, characterized in that: The track wheel assembly (320) comprises a roller (321), a guide rail (322), and a track wheel seat (333); guide grooves (334) are respectively provided at both ends of the guide rail (322); a clamping plate (335) is provided on the mounting seat (360), and the clamping plate (335) is inserted into the guide groove (334); the upper end of the track wheel seat (333) is slidably connected to the mounting seat (360), and the track wheel seat (333) is rotatably connected to the roller (321).