Leveling and straightening structure for belt self-moving tail

Abstract

The invention relates to the field of self-moving machine tails, and discloses a belt self-moving machine tail leveling and straightening structure which comprises a self-moving machine tail mechanism and a plurality of sets of leveling mechanisms arranged below the self-moving machine tail mechanism, each leveling mechanism comprises a mounting assembly arranged below the self-moving machine tail mechanism, and a connecting assembly is arranged below the mounting assembly. A gravity ball is arranged on the base, a connecting assembly is arranged on the base, fixing assemblies are arranged on the two sides of the connecting assembly respectively, a sliding assembly is arranged between the two fixing assemblies, and two displacement assemblies are arranged in the fixing assemblies. The displacement is converted into linear displacement of the L-shaped sliding plates in the fixing blocks on the two sides, the displacement sensors in the fixing shells directly detect the displacement amount and direction of the short plates of the L-shaped sliding plates, when the two sensors detect the displacement in the opposite directions at the same time, the system can immediately judge that the equipment inclines without ambiguity, and the control system controls the telescopic electric cylinders on the corresponding sides to act; and performing compensation support.

Description

Technical Field

[0001] This invention relates to the field of self-moving machine tail technology, specifically a belt self-moving machine tail leveling and straightening structure. Background Technology

[0002] In patent application CN215363206U, a frame and fixed support legs are included; a lifting support leg includes a column and a lifting cylinder. The lifting cylinder is vertically arranged, with one end connected to the column and the other end supported on the ground. The driving cylinder extends in the front-rear direction of the self-moving tail section of the belt conveyor. In the extended state, the other end of the lifting cylinder is supported on the ground, the frame is supported on the roller, and the fixed support leg is out of contact with the ground; in the retracted state, the other end is suspended in the air, and the fixed support leg is supported on the ground. This invention enables the self-moving tail section of the belt conveyor to move independently, thus easily achieving rapid tail section relocation.

[0003] In the aforementioned patents, some existing equipment requires the installation of electronic monitoring devices such as tilt sensors and level sensors at key locations on the frame to achieve automated leveling. This increases equipment costs and the complexity of installation and wiring. Moreover, in the harsh environment of coal mines, which is humid, dusty, and subject to strong vibrations, the reliability, stability, and lifespan of such sensors face severe challenges. Furthermore, for complex deformations of the fuselage caused by local undulations in the base plate, data from a single or a few sensors may not accurately reflect the overall attitude, or even cause signal conflicts. Complex algorithms are required for data fusion and attitude calculation, which carries the risk of delays and misjudgments. Summary of the Invention

[0004] The purpose of this invention is to provide a belt self-moving tail leveling and straightening structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a belt self-moving tail leveling and straightening structure, including a self-moving tail mechanism and multiple sets of leveling mechanisms disposed below the self-moving tail mechanism. The leveling mechanism includes an installation component disposed below the self-moving tail mechanism, a connecting component disposed below the installation component, fixing components disposed on both sides of the connecting component, a sliding component disposed between the two sets of fixing components, and two sets of displacement components disposed within the fixing components. The connecting assembly includes a gravity ball, with first connecting plates fixedly disposed on both sides of the gravity ball, a connecting vertical rod fixedly connected to the upper end of the gravity ball, and a fixing vertical plate fixedly connected to the upper end of the connecting vertical rod.

[0006] Preferably, the mounting assembly includes an inverted U-shaped plate disposed below the self-moving tail mechanism, with mounting plates fixedly connected to the upper sides of the inverted U-shaped plate respectively, and the fixed vertical plate rotatably connected inside the inverted U-shaped plate.

[0007] Preferably, the fixing component includes a connecting rod disposed below the self-moving tail mechanism, a fixing vertical rod fixedly disposed below the connecting rod, a fixing block fixedly connected to the lower end of the fixing vertical rod, and a sliding cavity formed inside the fixing block.

[0008] Preferably, the sliding cavity has through slots on its upper and lower sides, and limit rods are fixedly connected to both sides inside the sliding cavity. Each of the two limit rods is fixedly connected to a baffle, and annular rods are fixedly connected to one side above each end of the sliding cavity.

[0009] Preferably, the displacement component includes a connecting box fixedly connected to the upper end of the fixing block, the connecting box having two sliding grooves, and two sliding grooves on one side of the connecting box, the two sliding grooves respectively communicating with the two sliding grooves.

[0010] Preferably, a fixed shell is fixedly connected to one side of the connecting box, and a displacement sensor is provided inside the fixed shell. An L-shaped slide plate is slidably arranged in each of the two sliding grooves. The L-shaped slide plate is composed of a short plate and a long plate. The long plate of the L-shaped slide plate is slidably arranged in the sliding groove, and the short plate of the L-shaped slide plate is slidably arranged in the sliding groove.

[0011] Preferably, one end of the L-shaped slide plate is fixedly connected to a second fixing plate, a connecting crossbar is fixedly connected to one side of the second fixing plate, a fixing short plate is fixedly connected to the upper end of the second fixing plate, a connecting rope is fixedly connected to one side of the fixing short plate, a through hole corresponding to the connecting rope is opened on the fixing block, and the connecting crossbar is slidably arranged in the annular rod.

[0012] Preferably, the sliding assembly includes a sliding plate slidably connected in the sliding cavity. The sliding plate has two limiting grooves corresponding to the limiting rod. A second connecting plate is fixedly connected to one side of the sliding plate. A rotating rod is provided on one side of the second connecting plate. Rotating grooves are provided at both ends of the rotating rod. The second connecting plate and the first connecting plate are rotatably connected in the rotating grooves at both ends of the rotating rod.

[0013] Preferably, the self-moving tail mechanism includes a self-moving tail frame, the mounting plate is fixed to the bottom of the self-moving tail frame by bolts, the connecting rod is fixedly connected to the bottom of the self-moving tail frame, multiple sets of moving wheels are respectively arranged on both sides of the self-moving tail frame, and tracks are arranged below the moving wheels on both sides of the self-moving tail frame, with support leg assemblies arranged on the outer sides of the two tracks respectively.

[0014] Preferably, the outrigger assembly includes a first fixed plate fixedly connected to one side of the track, a telescopic electric cylinder fixedly connected above the first fixed plate, and a support plate fixedly connected to the output end of the telescopic electric cylinder through the first fixed plate.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) This application achieves the perception of the tilt state of the equipment through the self-leveling and straightening structure of the belt self-moving tail section. Traditional leveling methods for some equipment rely on installing independent tilt sensors or level sensors at different positions on the frame. This is not only costly and complicated to install, but also may cause data conflicts from multiple sensors for complex torsional deformations caused by local road surface depressions. Complex algorithms are required for fusion and judgment, which poses a risk of delay and misjudgment. This application uses a gravity ball suspended in the center as the absolute horizontal reference and combines it with displacement sensing linkage mechanisms arranged symmetrically on both sides. When the equipment tilts due to road surface depression on one side, the gravity ball deflects instantaneously under the action of gravity. This deflection is converted into L-shaped sliding plates in the fixed blocks on both sides without delay through rigid transmission components such as the first connecting plate, rotating rod and sliding plate. Instead, the key to this design is the symmetrical linear displacement. It transforms a two-dimensional change in tilt angle into two one-dimensional linear displacement signals with opposite directions. The displacement sensor inside the fixed shell directly detects the displacement and direction of the L-shaped sliding plate. Its signal output is direct, linear, and clear. When the two sensors detect displacements in opposite directions at the same time, the system can immediately and unambiguously determine that the equipment has tilted and accurately lock the tilt direction. This detection method eliminates complex signal calculations and logical judgments and realizes self-identification of the tilt state from a physical principle. This makes the decision time of the control system extremely short. After determining the tilt, the control system can immediately instruct the telescopic electric cylinder on the corresponding side to act for compensation and support. This can effectively suppress the aggravation of problems such as belt misalignment and material spillage caused by continuous tilting of the equipment. (2) This application has reliability, strong anti-interference ability and automatic reset function after the action is completed, which ensures the long-term maintenance-free stable operation of the equipment in the harsh environment of the coal mine. The core transmission and sensing parts of the entire leveling and detection mechanism are cleverly integrated and encapsulated in the structure of fixed block, connecting box and other structures, forming a relatively closed mechanical system, which greatly reduces the direct damage to precision sensing elements caused by underground dust, water vapor and collision. The displacement sensor is installed in the fixed shell and works only by detecting the mechanical displacement of the L-shaped slide plate. The L-shaped slide plate and its transmission chain are composed of metal components, and the structure is sturdy and durable. The displacement detection mechanism on both sides forms a mechanical coupling with the gravity ball linkage mechanism in the center through the sliding plate and rotating rod. It is not only used to transmit tilt signal, but also realizes a crucial function, automatic reset. When the telescopic electric cylinder performs the support action and corrects the equipment to the horizontal, the gravity ball and the connecting vertical rod naturally swing back to the initial state perpendicular to the self-moving tail frame under the action of gravity. This swinging action is transmitted in the opposite direction through the same set of linkage mechanisms. Once the pushing or pulling force on the sliding plates on both sides is released, the automatic reel integrated in the connecting box begins to work. By retracting the connecting rope, all movable parts, including the connecting crossbar, L-shaped slide plate, and the driven sliding plate, are smoothly and accurately pulled back to their initial preset positions. The entire reset process is fully automated, requiring no external power drive or manual intervention. The displacement sensor reading also returns to zero, preparing for the next tilt detection. This detection, execution, and reset design ensures the independence of each system action and the consistency of the initial state, avoiding cumulative errors or malfunctions caused by mechanism jamming or failure to reset. At the same time, the failure rate of the purely mechanical linkage and reset mechanism is extremely low, requiring minimal maintenance. Compared to solutions that rely entirely on the electronic control system and hydraulic locks to maintain the state, the automatic reset mechanism of this application has lower energy consumption and higher reliability, significantly reducing the maintenance cost and ease of use throughout the equipment's life cycle. It is particularly suitable for long-term deployment in harsh environments and inconvenient maintenance conditions in underground working faces, ensuring that the self-propelled belt conveyor tail continuously and autonomously maintains a straight state. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the self-moving tail mechanism of the present invention; Figure 3 This is a schematic diagram of the support leg assembly structure of the present invention; Figure 4 This is a schematic diagram of the leveling mechanism of the present invention; Figure 5 This is a schematic diagram of the connection component structure of the present invention; Figure 6 This is a schematic diagram of the installation component structure of the present invention; Figure 7 This is a schematic diagram of the fixed component structure of the present invention; Figure 8 This is a schematic diagram of the structure of the fixing component of the present invention; Figure 9 This is a schematic diagram of the displacement component structure of the present invention; Figure 10 This is a schematic diagram of the sliding component structure of the present invention.

[0017] In the diagram: 1. Self-moving tail mechanism; 11. Self-moving tail frame; 12. Moving wheel set; 13. Track; 14. Outrigger assembly; 141. First fixed plate; 142. Telescopic electric cylinder; 143. Support plate; 2. Leveling mechanism; 21. Connecting assembly; 211. Gravity ball; 212. First connecting plate; 213. Connecting vertical rod; 214. Fixed vertical plate; 22. Mounting assembly; 221. Inverted U-shaped plate; 222. Mounting plate; 23. Fixing assembly; 231. Fixing block; 232. Fixed vertical rod; 233. Connecting... 234. Insert rod; 235. Sliding cavity; 236. Through groove; 237. Limiting rod; 238. Baffle; 239. Ring rod; 240. Displacement component; 241. Connecting box; 242. Sliding long groove; 243. Sliding groove; 244. Fixed shell; 245. L-shaped sliding plate; 246. Second fixed plate; 247. Connecting crossbar; 248. Fixed short plate; 249. Connecting rope; 25. Sliding component; 251. Rotating long rod; 252. Rotating groove; 253. Sliding plate; 254. Second connecting plate; 255. Limiting sliding groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0019] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0020] like Figures 1 to 10 As shown, the present invention provides a belt self-moving tail leveling and straightening structure, including a self-moving tail mechanism 1 and multiple sets of leveling mechanisms 2 disposed below the self-moving tail mechanism 1. The leveling mechanism 2 includes an installation component 22 disposed below the self-moving tail mechanism 1. A connecting component 21 is disposed below the installation component 22. Fixing components 23 are respectively disposed on both sides of the connecting component 21. A sliding component 25 is disposed between the two sets of fixing components 23. Two sets of displacement components 24 are disposed inside the fixing component 23. The connecting component 21 includes a gravity ball 211, with first connecting plates 212 fixedly disposed on both sides of the gravity ball 211, a connecting vertical rod 213 fixedly connected to the upper end of the gravity ball 211, and a fixing vertical plate 214 fixedly connected to the upper end of the connecting vertical rod 213.

[0021] The mounting assembly 22 includes an inverted U-shaped plate 221 disposed below the self-moving tail mechanism 1. Mounting plates 222 are fixedly connected to the upper sides of the inverted U-shaped plate 221 respectively, and a fixed vertical plate 214 is rotatably connected inside the inverted U-shaped plate 221.

[0022] The fixing component 23 includes a connecting rod 233 disposed below the self-moving tail mechanism 1. A fixing vertical rod 232 is fixedly disposed below the connecting rod 233. A fixing block 231 is fixedly connected to the lower end of the fixing vertical rod 232. A sliding cavity 234 is provided inside the fixing block 231.

[0023] The sliding cavity 234 has through grooves 235 on its upper and lower sides respectively. Limiting rods 236 are fixedly connected to both sides inside the sliding cavity 234. Baffles 237 are fixedly connected to the two limiting rods 236 respectively. Annular rods 238 are fixedly connected to one side above both ends of the sliding cavity 234 respectively.

[0024] The displacement component 24 includes a connecting box 241 fixedly connected to the upper end of the fixing block 231. The connecting box 241 has two sliding grooves 242 and two sliding grooves 243 on one side. The two sliding grooves 243 are respectively connected to the two sliding grooves 242. Two automatic winding devices are provided inside the connecting box 241.

[0025] A fixed shell 244 is fixedly connected to one side of the connecting box 241. A displacement sensor is installed inside the fixed shell 244. An L-shaped slide plate 245 is slidably installed in each of the two sliding grooves 242. The L-shaped slide plate 245 is composed of a short plate and a long plate. The long plate of the L-shaped slide plate 245 is slidably installed in the sliding groove 242, and the short plate of the L-shaped slide plate 245 is slidably installed in the sliding groove 243.

[0026] One end of the L-shaped slide plate 245 is fixedly connected to a second fixing plate 246. A connecting crossbar 247 is fixedly connected to one side of the second fixing plate 246. A fixing short plate 248 is fixedly connected to the upper end of the second fixing plate 246. A connecting rope 249 is fixedly connected to one side of the fixing short plate 248. A through hole corresponding to the connecting rope 249 is opened on the fixing block 231. The connecting crossbar 247 is slidably disposed in the ring rod 238. The other ends of the two connecting ropes 249 are respectively fixed to the automatic winding device. The displacement sensor in the fixing housing 244 is used to detect the movement of the short plate on the L-shaped slide plate 245.

[0027] The sliding assembly 25 includes a sliding plate 253 slidably connected in the sliding cavity 234. The sliding plate 253 has two limiting grooves 255 corresponding to the limiting rod 236. A second connecting plate 254 is fixedly connected to one side of the sliding plate 253. A rotating rod 251 is provided on one side of the second connecting plate 254. Rotating grooves 252 are respectively provided at both ends of the rotating rod 251. The second connecting plate 254 and the first connecting plate 212 are rotatably connected in the rotating grooves 252 at both ends of the rotating rod 251.

[0028] The self-moving tail mechanism 1 includes a self-moving tail frame 11, a mounting plate 222 fixed to the bottom of the self-moving tail frame 11 by bolts, a connecting rod 233 fixedly connected to the bottom of the self-moving tail frame 11, multiple sets of moving wheel sets 12 are respectively provided on both sides of the self-moving tail frame 11, and a track 13 is provided below the moving wheel sets 12 on both sides of the self-moving tail frame 11, and a support leg assembly 14 is respectively provided on the outer side of the two tracks 13.

[0029] The outrigger assembly 14 includes a first fixed plate 141 fixedly connected to one side of the track 13, a telescopic electric cylinder 142 fixedly connected above the first fixed plate 141, and a support plate 143 fixedly connected to the output end of the telescopic electric cylinder 142 through the first fixed plate 141.

[0030] The working principle of this invention is as follows: During equipment operation, if a depression occurs in the road surface, the self-moving tail mechanism 1 will tilt as a whole. At this time, the gravity ball 211 suspended below it remains perpendicular to the horizontal ground under the action of gravity, thus deflecting relative to the tilted self-moving tail frame 11. The deflection of the gravity ball 211 drives two rotating rods 251 to move in opposite directions through the first connecting plates 212 on both sides. One rotating rod 251 is pushed, and the other is pulled. Each rotating rod 251 drives the connected sliding plate 253 through its second connecting plate 254 in the sliding cavity 234 of the corresponding fixed block 231. In the inward sliding motion, for the side being pushed that is the concave side of the road surface, the movement of the sliding plate 253 will compress the connecting crossbar 247 on that side, forcing the connecting crossbar 247 to slide along the ring bar 238. The connecting crossbar 247 drives the second fixed plate 246 and the L-shaped sliding plate 245 fixed thereto to move, causing the short plate of the L-shaped sliding plate 245 to slide away from the gravity ball 211 within the sliding groove 243. For the side being pulled, the pressure of the movement of the sliding plate 253 on the connecting crossbar 247 on that side will also cause the short plate of its L-shaped sliding plate 245 to slide away from the gravity ball 211. The plate moves within the sliding groove 243. A displacement sensor installed inside the fixed housing 244 continuously monitors the displacement direction and distance of the short L-shaped sliding plate 245. When the system simultaneously detects that the L-shaped sliding plates 245 on both sides are moving in opposite directions, it can be determined that the self-moving tail mechanism 1 has tilted. The control system then issues a command to activate the telescopic electric cylinder 142 on the side where the sliding plate 253 is pushed and the connecting crossbar 247 is squeezed. The output end of the telescopic electric cylinder 142 extends, pushing the support plate 143 downward to compensate for road surface depressions and restore the equipment to its normal position. When the equipment is level, the gravity ball 211 and the connecting vertical rod 213 return to their initial state perpendicular to the self-moving tail frame 11. At this time, the pushing or pulling force on the rotating long rods 251 on both sides is released. Under the action of the automatic winding device in the connecting box 241, the connecting rope 249 is wound up. The connecting horizontal rod 247 is pulled back to its initial position through the fixed short plate 248 and the second fixed plate 246, which in turn drives the L-shaped slide plate 245, the sliding plate 253, etc. to reset. The displacement sensor reading returns to zero, preparing for the next test.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A belt self-moving tail leveling and straightening structure, comprising a self-moving tail mechanism (1) and multiple sets of leveling mechanisms (2) disposed below the self-moving tail mechanism (1), characterized in that: The leveling mechanism (2) includes an installation component (22) disposed below the self-moving tail mechanism (1), a connecting component (21) disposed below the installation component (22), a fixing component (23) disposed on both sides of the connecting component (21), a sliding component (25) disposed between the two sets of fixing components (23), and two sets of displacement components (24) disposed inside the fixing component (23). The connecting component (21) includes a gravity ball (211), with a first connecting plate (212) fixedly installed on both sides of the gravity ball (211), a connecting vertical rod (213) fixedly connected to the upper end of the gravity ball (211), and a fixing vertical plate (214) fixedly connected to the upper end of the connecting vertical rod (213).

2. The belt self-moving tail leveling and straightening structure according to claim 1, characterized in that: The mounting assembly (22) includes an inverted U-shaped plate (221) disposed below the self-moving tail mechanism (1), and mounting plates (222) are fixedly connected to the upper sides of the inverted U-shaped plate (221) respectively. The fixed vertical plate (214) is rotatably connected inside the inverted U-shaped plate (221).

3. The belt self-moving tail leveling and straightening structure according to claim 2, characterized in that: The fixing component (23) includes a connecting rod (233) disposed below the self-moving tail mechanism (1), a fixing vertical rod (232) is fixedly disposed below the connecting rod (233), a fixing block (231) is fixedly connected to the lower end of the fixing vertical rod (232), and a sliding cavity (234) is provided in the fixing block (231).

4. The belt self-moving tail leveling and straightening structure according to claim 3, characterized in that: The sliding cavity (234) has through grooves (235) on its upper and lower sides respectively. Limiting rods (236) are fixedly connected to both sides inside the sliding cavity (234). Baffles (237) are fixedly connected to the two limiting rods (236) respectively. Ring rods (238) are fixedly connected to one side above both ends of the sliding cavity (234).

5. The belt self-moving tail leveling and straightening structure according to claim 4, characterized in that: The displacement component (24) includes a connecting box (241) fixedly connected to the upper end of the fixing block (231). The connecting box (241) has two sliding grooves (242) and two sliding grooves (243) on one side. The two sliding grooves (243) are respectively connected to the two sliding grooves (242).

6. The belt self-moving tail leveling and straightening structure according to claim 5, characterized in that: A fixed shell (244) is fixedly connected to one side of the connecting box (241). A displacement sensor is provided inside the fixed shell (244). An L-shaped slide plate (245) is slidably arranged in the two sliding grooves (242). The L-shaped slide plate (245) is composed of a short plate and a long plate. The long plate of the L-shaped slide plate (245) is slidably arranged in the sliding groove (242), and the short plate of the L-shaped slide plate (245) is slidably arranged in the sliding groove (243).

7. The belt self-moving tail leveling and straightening structure according to claim 6, characterized in that: The L-shaped sliding plate (245) is fixedly connected to a second fixing plate (246) at one end. A connecting crossbar (247) is fixedly connected to one side of the second fixing plate (246). A fixing short plate (248) is fixedly connected to the upper end of the second fixing plate (246). A connecting rope (249) is fixedly connected to one side of the fixing short plate (248). A through hole corresponding to the connecting rope (249) is opened on the fixing block (231). The connecting crossbar (247) is slidably arranged in the ring rod (238).

8. The belt self-moving tail leveling and straightening structure according to claim 7, characterized in that: The sliding assembly (25) includes a sliding plate (253) slidably connected in the sliding cavity (234). The sliding plate (253) has two limiting grooves (255) corresponding to the limiting rod (236). A second connecting plate (254) is fixedly connected to one side of the sliding plate (253). A rotating rod (251) is provided on one side of the second connecting plate (254). Rotating grooves (252) are respectively provided at both ends of the rotating rod (251). The second connecting plate (254) and the first connecting plate (212) are rotatably connected in the rotating grooves (252) at both ends of the rotating rod (251).

9. The belt self-moving tail leveling and straightening structure according to claim 3, characterized in that: The self-moving tail mechanism (1) includes a self-moving tail frame (11), the mounting plate (222) is fixed to the bottom of the self-moving tail frame (11) by bolts, the connecting rod (233) is fixedly connected to the bottom of the self-moving tail frame (11), multiple sets of moving wheel sets (12) are respectively provided on both sides of the self-moving tail frame (11), and a track (13) is provided below the moving wheel sets (12) on both sides of the self-moving tail frame (11), and a support leg assembly (14) is respectively provided on the outer side of the two tracks (13).

10. The belt self-moving tail leveling and straightening structure according to claim 9, characterized in that: The outrigger assembly (14) includes a first fixed plate (141) fixedly connected to one side of the track (13), a telescopic electric cylinder (142) fixedly connected above the first fixed plate (141), and a support plate (143) fixedly connected to the output end of the telescopic electric cylinder (142) through the first fixed plate (141).

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