Skid steer loader based on multifunctional telescopic arm

Abstract

The invention relates to the field of loaders, in particular to a skid loader based on a multifunctional telescopic arm, which comprises a loading vehicle body, trapezoidal driving arms are symmetrically and rotatably connected to the loading vehicle body, a hydraulic cylinder I is rotatably connected between the upper parts of the two groups of driving arms and the loading vehicle body, and a telescopic frame is arranged on one side of each of the two groups of driving arms. When the telescopic arm works, the third hydraulic cylinder drives the telescopic arm to adjust the length. When the bucket bears, the load enables the telescopic arm to swing slightly, the push shaft is pushed to move upwards through the connecting rod mechanism, the conical block and the fixed inclined plate are driven to be locked in a wedge shape, the locking force is enhanced along with increase of the load, and therefore the structural rigidity and the bearing strength in the stretching-out state are improved in a self-adaptive mode. Meanwhile, the movement opens the sealing plate through the linkage rod, so that the lubricating oil slowly flows out of the oil storage tank to the friction surface; and the oil path is automatically closed after unloading. And lubricating oil is uniformly coated in the stretching process to form a continuous lubricating film, so that the wear and maintenance requirements are obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of loaders, and more specifically to a skid steer loader based on a multi-functional telescopic boom. Background Technology

[0002] A loader is a type of wheeled or tracked engineering machinery widely used in fields such as engineering construction, mining, and logistics transportation. Its core function is to load, transport, transport, and unload materials through the working device installed at the front end.

[0003] In the invention patent application CN213679524U, published on July 13, 2021, entitled "A Telescopic Boom for a Skid Steer Loader," this invention discloses a telescopic boom for a skid steer loader, including a loader body, a telescopic boom, and a lifting cylinder. A first lug is provided on the top outer side of the connecting seat at the front end of the telescopic boom. The first lug rotatably connects the telescopic end of the rotating cylinder to the back of a disc base. The center of the back of the disc base is rotatably connected to the front end of the connecting seat. The beam is radially... The connecting sleeve is slidably fitted inside the disc base. The connecting sleeve on the inner end of the beam body is slidably engaged with the first groove on the front of the disc base. The outer wall of the collar that is rotatably fitted at the front end of the connecting sleeve is provided with a fourth lug. The lifting ring is rotatably fitted inside the connecting sleeve and on the outer end of the beam body. The hydraulic motor power end in the inner cavity of the disc base is fitted with the center of the rotating disc. The side of the arc-shaped swing arm connected to the outer periphery of the rotating disc is slidably engaged with a fifth lug along the axial direction. The two ends of the connecting rod are rotatably connected to the fourth and fifth lugs. This solves the problem that telescopic booms are difficult to lift irregular objects.

[0004] In existing loaders, including those mentioned in the patents or prior art, the change in the length of the telescopic boom alters the position of the point of gravity application during operation. This leads to a decrease in the overall load-bearing capacity of the structure after the bucket extends, affecting the strength and stability of the telescopic boom. Furthermore, the friction between the boom sections during extension necessitates regular lubrication, which increases equipment maintenance intensity and operating costs to some extent.

[0005] Therefore, it is necessary to invent a skid steer loader based on a multi-functional telescopic boom to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a skid steer loader based on a multi-functional telescopic boom. Through a linkage mechanism that integrates telescopic adjustment, load adaptive locking, and intelligent lubrication, it solves the problems of insufficient load-bearing strength and stability of the telescopic boom when it is fully extended during operation, as well as high maintenance costs and reduced equipment availability caused by frequent manual maintenance of the friction pairs in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a skid steer loader based on a multi-functional telescopic boom, comprising a loading vehicle body, trapezoidal drive arms symmetrically and rotatably connected to the loading vehicle body, a hydraulic cylinder rotatably connected between the two sets of drive arms and the loading vehicle body, a telescopic frame provided on one side of the two sets of drive arms, a telescopic assembly provided between the telescopic frame and the drive arms, a stabilizing assembly provided inside the drive arms, a lubrication assembly provided on the outside of the drive arms, a loading bucket rotatably connected to one side of the telescopic frame, and a hydraulic cylinder symmetrically and rotatably connected between the loading bucket and the telescopic frame.

[0008] As a preferred embodiment of the present invention, the telescopic assembly includes a hydraulic cylinder three, which is installed inside two sets of drive arms. A connecting frame is installed at the output end of each set of hydraulic cylinder three. Telescopic arms are symmetrically installed on the telescopic frame, and the two sets of telescopic arms are rotatably connected to the corresponding connecting frames. An oblique through groove is opened on each set of telescopic arms. A through block is installed on the inner wall of each set of drive arms, and the through block is slidably connected to the corresponding oblique through groove.

[0009] As a preferred embodiment of the present invention, the stabilizing component includes a through cavity, which is symmetrically opened on the sides of two sets of drive arms and communicates with the interior of the corresponding drive arms. Each set of drive arms is provided with a sliding frame, and each set of sliding frames is symmetrically installed with sliding blocks in sequence on the inner wall of each set of sliding frames. Each set of sliding blocks is fitted with a rolling ring, and the rolling ring is in contact with the inner wall of the corresponding through cavity.

[0010] As a preferred embodiment of the present invention, connecting plates are symmetrically installed at the bottom of both sets of sliding frames, and a sliding cavity is opened on the surface of each set of connecting plates. A connecting frame is symmetrically rotatably connected below the telescopic frame, and a roller is rotatably connected on the side of the two sets of connecting frames away from the telescopic frame. The roller is slidably connected to the inside of the corresponding sliding cavity, and the roller is located between the two sets of connecting plates.

[0011] As a preferred embodiment of the present invention, a second sliding cavity is provided below each of the two sets of driving arms, and the second sliding cavity communicates with the interior of the corresponding driving arm. A connecting cylinder is installed between each of the two sets of connecting frames and the corresponding sliding frame, and the connecting cylinder is slidably connected to the second sliding cavity.

[0012] As a preferred embodiment of the present invention, a push shaft is connected through both sets of connecting cylinders, and the two ends of the push shaft extend to the top of the corresponding connecting frame and the bottom of the sliding frame, respectively. A butterfly spring is sleeved on both sets of push shafts, and the butterfly spring is in contact with the upper part of the inner wall of the connecting cylinder and the lower part of the push shaft surface, respectively. A trapezoidal plate is installed at the bottom of both sets of push shafts, and the inclined surface of the trapezoidal plate is in contact with the corresponding roller.

[0013] As a preferred embodiment of the present invention, a conical ring is fixedly fitted on both sets of push shafts, and a conical block is symmetrically connected through the inner wall of both sets of connecting frames. A rolling ring is also fitted on the surface of the conical block, and one side of the inclined surface of each set of conical blocks extends into the corresponding through cavity.

[0014] As a preferred embodiment of the present invention, each of the two sets of conical blocks has an inclined plane on its other side, and the inclined planes of the same set are arranged opposite each other. The inclined planes are fitted with the corresponding conical rings. Each set of through cavities is symmetrically equipped with inclined plates, and the inclined surfaces of the inclined plates are arranged opposite to the inclined surfaces of the conical blocks.

[0015] As a preferred embodiment of the present invention, the lubrication assembly includes an oil reservoir, which is symmetrically installed on both sides of the sliding frame. Each set of oil reservoirs is equipped with a baffle inside. The surface of the baffle is provided with through holes in a ring. A set of sliding blocks inside the sliding frame is also provided with through holes, and the through holes here communicate with the inside of the oil reservoir.

[0016] In a preferred embodiment of the present invention, each set of baffles is internally connected to a limiting rod, which extends through to the surface of the sliding block. One end of the limiting rod is fixedly connected to the conical block. A sealing plate is sleeved and fixed on the limiting rod, and the sealing plate is in contact with the inner wall of the sliding block. The sealing plate completely covers the through hole on the surface of the sliding block, and the area of ​​the sealing plate is smaller than the area of ​​the inner wall of the sliding block. Each set of limiting rods is sleeved with a threaded spring, and both ends of the threaded spring are in contact with the sealing plate and the baffle, respectively.

[0017] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. During telescopic operation, the three-drive connecting frame of the hydraulic cylinder moves linearly, driving the telescopic boom to extend and retract along the drive arm, thereby adjusting the working radius. During this adjustment, the sliding fit between the inclined slot and the through block not only serves as a guide but also allows the telescopic boom to produce adaptive micro-oscillations under load, optimizing its stress posture. When the loading bucket bears the weight of the material, the load transfer causes the telescopic boom to swing downwards, which in turn pushes the roller along the sliding cavity via the connecting frame. The roller's compression of the trapezoidal plate's inclined surface converts the lateral movement into the upward linear movement of the push shaft, compressing the disc spring. As the push shaft moves upwards, its fixed conical ring compresses the inclined surface inside the conical block, forcing the conical block to move radially outwards until its outer inclined surface forms a tight wedge-shaped fit with the inclined plate fixed in the through cavity. This fit generates a self-increasing locking effect, with the locking force increasing synchronously with the increase of the external load. Therefore, under conditions of boom extension and increased torque, this significantly improves the structural stiffness, bending stability, and load-bearing capacity of the entire telescopic mechanism, achieving adaptive strengthening of strength and stability. 2. As the conical block moves outward, the sealing plate is synchronously displaced by the fixed limiting rod, causing the sealing plate to detach from the through hole on the sliding block surface, thus opening the oil supply channel of the oil tank. Under gravity and capillary action, the lubricating oil slowly and continuously seeps out through the through hole on the baffle and sliding block to the sliding contact surface in the first cavity, achieving immediate lubrication of the sliding block, rolling ring, and other moving pairs. When the bucket is unloaded and the load disappears, the compressed threaded spring releases its elasticity, pushing the sealing plate to reset, resealing the through hole, and automatically cutting off the oil circuit, effectively avoiding ineffective loss of lubricating oil and environmental pollution. In addition, during subsequent telescopic adjustment movements, the lubricating oil that has flowed out will be carried by the sliding block and rolling ring to a wider area of ​​the first cavity, and evenly coated on the entire mating surface during relative movement, forming a durable lubricating film. This intelligent lubrication mechanism of "load triggering, on-demand oil supply, and motion coating" not only significantly reduces the wear rate of key friction pairs, but also greatly reduces the frequency and cost of daily maintenance, ensuring the smooth and reliable long-term operation of the mechanism. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drive arm structure of the present invention; Figure 3 This is a schematic diagram of the connection structure between the drive arm and the loading bucket of the present invention; Figure 4 This is a schematic diagram of the drive arm planing structure of the present invention; Figure 5 This is a schematic diagram of the oblique through-slot structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the drive arm of the present invention; Figure 7 This is a schematic diagram of the trapezoidal plate structure of the present invention; Figure 8 This is a schematic diagram of the sliding frame planing structure of the present invention; Figure 9 This is a schematic diagram of the planarized structure of the oil storage tank of the present invention; Figure 10 This is a schematic diagram of the mating structure of the conical ring and the inclined surface of the present invention; Figure 11 This is a schematic diagram of the cone-shaped block structure of the present invention; Figure 12 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 13 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 14 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 15 For the present invention Figure 8 Enlarged structural diagram at point D.

[0020] Explanation of reference numerals in the attached figures: 001. Loading vehicle body; 101. Drive arm; 102. Hydraulic cylinder one; 103. Telescopic frame; 104. Loading bucket; 105. Hydraulic cylinder two; 002. Telescopic assembly; 201. Hydraulic cylinder three; 202. Connecting frame; 203. Telescopic arm; 204. Angled through slot; 205. Through block; 003. Stabilizing assembly; 301. Through cavity; 302. Sliding frame; 303. Sliding block; 304. Rolling ring; 305. 306. Connecting plate; 307. Slide cavity one; 308. Connecting frame; 309. Roller; 310. Slide cavity two; 311. Push shaft; 312. Butterfly spring; 313. Trapezoidal plate; 314. Conical ring; 315. Conical block; 316. Inclined plane; 317. Inclined plate; 004. Lubrication assembly; 401. Oil tank; 402. Baffle; 403. Through hole; 404. Limiting rod; 405. Sealing plate; 406. Threaded spring. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] This invention provides, for example Figure 1-15 The skid steer loader based on a multi-functional telescopic boom shown includes a loading vehicle body 001. Trapezoidal drive arms 101 are symmetrically rotatably connected to the loading vehicle body 001. A hydraulic cylinder 102 is rotatably connected between the two sets of drive arms 101 and the loading vehicle body 001. A telescopic frame 103 is provided on one side of the two sets of drive arms 101. A telescopic component 002 is provided between the telescopic frame 103 and the drive arms 101. A stabilizing component 003 is provided inside the drive arms 101. A lubrication component 004 is provided on the outside of the drive arms 101. A loading bucket 104 is rotatably connected to one side of the telescopic frame 103. A hydraulic cylinder 105 is symmetrically rotatably connected between the loading bucket 104 and the telescopic frame 103.

[0023] The drive arm 101 is driven to swing by hydraulic cylinder 102, and the loading bucket 104 is driven to rotate by hydraulic cylinder 105, thereby controlling the bucket posture and loading operation. The telescopic assembly 002 is used to adjust the telescopic length of the drive arm 101 and the telescopic frame 103; the stabilizing assembly 003 can lock the mechanism position after telescopic extension to ensure operational stability; the lubrication assembly 004 automatically lubricates the moving parts during extension to reduce wear.

[0024] Furthermore, in the above structure, the telescopic component 002 includes a hydraulic cylinder 201, which is installed inside the two sets of drive arms 101. A connecting frame 202 is installed at the output end of each set of hydraulic cylinders 201. Telescopic arms 203 are symmetrically installed on the telescopic frame 103, and the two sets of telescopic arms 203 are rotatably connected to the corresponding connecting frames 202. An oblique through groove 204 is opened on each set of telescopic arms 203. A through block 205 is installed on the inner wall of each set of drive arms 101, and the through block 205 is slidably connected to the corresponding oblique through groove 204.

[0025] Hydraulic cylinder 201 pushes the connecting frame 202 to move, thereby causing the telescopic boom 203 to extend and retract along the drive arm 101. The inclined slot 204 on the telescopic boom 203 slides into contact with the through block 205 on the drive arm 101. Since the drive arm 101 is trapezoidal and gradually widens near the bucket end, the sliding of the inclined slot 204 along the through block 205 during extension and retraction causes the telescopic boom 203 to oscillate slightly downwards. This allows it to automatically adapt to changes in the load center of gravity during extension and optimize the force posture of the boom.

[0026] Furthermore, in the above structure, the stabilizing component 003 includes a through cavity 301, which is symmetrically opened on the sides of the two sets of drive arms 101 and communicates with the interior of the corresponding drive arm 101. Each set of drive arms 101 is provided with a sliding frame 302, and each set of sliding frames 302 is symmetrically installed with sliding blocks 303 in sequence on the inner wall. Each set of sliding blocks 303 is fitted with a rolling ring 304, and the rolling ring 304 is in contact with the inner wall of the corresponding through cavity 301.

[0027] By rolling contact between the rolling ring 304 and the inner wall of the cavity 301, the sliding block 303 and its connected sliding frame 302 can move smoothly along the drive arm 101, significantly reducing motion friction resistance and improving the smoothness and reliability of telescopic movements.

[0028] Furthermore, in the above structure, connecting plates 305 are symmetrically installed at the bottom of both sets of sliding frames 302, and each set of connecting plates 305 has a sliding cavity 306 on its surface. Connecting frames 307 are symmetrically rotatably connected below the telescopic frame 103. Rollers 308 are rotatably connected to the side of each set of connecting frames 307 away from the telescopic frame 103, and the rollers 308 are slidably connected to the corresponding sliding cavity 306. The rollers 308 are located between the corresponding two sets of connecting plates 305.

[0029] When the telescopic frame 103 swings due to load or movement, it causes the roller 308 at the end of the connecting frame 307 to slide within the sliding cavity 306 of the connecting plate 305. This structure converts the swing of the telescopic frame 103 into the linear movement of the roller 308, providing input conditions for subsequent positioning and buffering.

[0030] Furthermore, in the above structure, a second sliding cavity 309 is provided below each of the two sets of drive arms 101, and the second sliding cavity 309 is in communication with the interior of the corresponding drive arm 101. A connecting cylinder 310 is installed between each of the two sets of connecting frames 202 and the corresponding sliding frame 302, and the connecting cylinder 310 is slidably connected to the corresponding second sliding cavity 309.

[0031] The connecting cylinder 310 passes through the sliding cavity 309 of the drive arm 101, rigidly connecting the inner connecting frame 202 and the outer sliding frame 302. When the telescopic component 002 moves, the movement of the connecting frame 202 can synchronously drive the movement of the sliding frame 302 through the connecting cylinder 310, ensuring the consistency of the internal and external linkage mechanisms.

[0032] Furthermore, in the above structure, push shafts 311 are connected through both sets of connecting cylinders 310, and the two ends of the push shafts 311 extend to the top of the corresponding connecting frame 202 and the bottom of the sliding frame 302, respectively. A butterfly spring 312 is sleeved on both sets of push shafts 311, and the butterfly spring 312 is in contact with the upper part of the inner wall of the connecting cylinder 310 and the lower part of the surface of the push shaft 311, respectively. A trapezoidal plate 313 is installed at the bottom of both sets of push shafts 311, and the inclined surface of the trapezoidal plate 313 is in contact with the corresponding roller 308.

[0033] When the bucket 104 carries material, its weight is transmitted to the roller 308 through the telescopic frame 103 and the connecting frame 307. The roller 308 presses against the inclined surface of the trapezoidal plate 313, converting the lateral force into an upward thrust of the push shaft 311 and compressing the disc spring 312. The preload of the disc spring 312 sets a trigger threshold: when unloaded or lightly loaded, its elasticity is sufficient to maintain the stability of the boom posture; when the load weight exceeds the threshold, the push shaft 311 begins to move, and the greater the load, the greater the compression of the disc spring 312, and the stronger the feedback locking force, thereby realizing the dynamic adjustment of the boom locking state according to the load size.

[0034] Furthermore, in the above structure, a conical ring 314 is fixedly fitted on both sets of push shafts 311, and a conical block 315 is symmetrically connected through the inner wall of both sets of connecting frames 202. A rolling ring 304 is also fitted on the surface of the conical block 315, and one side of the inclined surface of each set of conical blocks 315 extends into the corresponding through cavity 301.

[0035] The tapered block 315 can slide along the inner wall of the connecting frame 202 and the through cavity 301 via the rolling ring 304. The tapered ring 314 on the push shaft 311 cooperates with the inner inclined plane 316 of the tapered block 315. When the push shaft 311 moves upward, the tapered block 315 can be pushed outward by the tapered ring 314 to prepare for entering the locking position.

[0036] Furthermore, in the above structure, each of the two sets of conical blocks 315 has an inclined plane 316 on the other side, and the inclined planes 316 in the same set are arranged opposite each other. The inclined planes 316 fit into the corresponding conical rings 314. Each set of through cavities 301 has an inclined plate 317 installed symmetrically in the upper and lower parts, and the inclined surface of the inclined plate 317 is arranged opposite to the inclined surface of the conical block 315.

[0037] When the conical block 315 is pushed to the extended state by the conical ring 314, its outer inclined surface will closely fit with the inclined surface of the inclined plate 317 fixed in the cavity 301, forming a wedge locking effect. This structure can firmly lock the connecting frame 202 and the inner wall of the drive arm 101, greatly enhancing the overall rigidity and bending strength of the telescopic arm 203 under load, and effectively suppressing structural deformation or swaying that may be caused by the extension of the arm and the outward shift of the center of gravity.

[0038] Furthermore, in the above structure, the lubrication component 004 includes an oil reservoir 401, which is symmetrically installed on both sides of the sliding frame 302. Each set of oil reservoirs 401 is equipped with a baffle 402. The surface of the baffle 402 is provided with through holes 403 in a ring. A set of sliding blocks 303 inside the sliding frame 302 is also provided with through holes 403, and the through holes 403 here are connected to the inside of the oil reservoir 401.

[0039] The oil storage tank 401 is used to store lubricating oil, and the through hole 403 on the baffle 402 forms a flow channel for the lubricating oil, so that it can be guided from the oil storage tank 401 to the through hole 403 on the surface of the sliding block 303, thus preparing for the supply of oil to the lubrication point.

[0040] Furthermore, in the above structure, each set of baffles 402 is internally limited by a limiting rod 404, which extends through to the surface of the sliding block 303. One end of the limiting rod 404 is fixedly connected to the conical block 315. A sealing plate 405 is sleeved and fixed on the limiting rod 404, and the sealing plate 405 is in contact with the inner wall of the sliding block 303. The sealing plate 405 completely covers the through hole 403 on the surface of the sliding block 303, and the area of ​​the sealing plate 405 is smaller than the area of ​​the inner wall of the sliding block 303. Each set of limiting rods 404 is sleeved with a threaded spring 406, and both ends of the threaded spring 406 are in contact with the sealing plate 405 and the baffle 402, respectively.

[0041] In the non-load-bearing state, the threaded spring 406 pushes the sealing plate 405 to cover the lubricating oil hole. When the load is applied, the conical block 315 moves outward to lock, which in turn drives the sealing plate 405 to move synchronously through the limit rod 404, thereby opening the through hole 403 and allowing lubricating oil to slowly seep out to the sliding contact surface for lubrication. After unloading, the conical block 315 returns to its original position under the action of the threaded spring 406, and the sealing plate 405 closes the through hole 403 again, preventing lubricating oil from leaking out unnecessarily. This design achieves the intelligent effect of "lubrication upon load," effectively reducing wear on the friction pair.

[0042] like Figure 1-15 As shown, when the working range needs to be adjusted, the hydraulic cylinder 201 pushes the connecting frame 202 to move within the drive arm 101, which in turn drives the telescopic arm 203 and the telescopic frame 103, which are hinged to it, to extend and retract synchronously, thereby adjusting the boom length.

[0043] When operation is carried out after adjustment, the loading bucket 104 bears the weight of the material. This load is transmitted through the telescopic arm 203, and the sliding engagement between the inclined slot 204 and the through block 205 causes the telescopic arm 203 to swing slightly downward. This swing drives the connecting frame 307 to move, pushing the roller 308 to move along the sliding cavity 306 of the connecting plate 305, thereby squeezing the inclined surface of the trapezoidal plate 313.

[0044] The compressive force on the trapezoidal plate 313 is converted into an upward linear motion of the push shaft 311, compressing the disc spring 312. As the push shaft 311 rises, the conical ring 314 fixed on it presses against the inclined plane 316 on the inner side of the conical block 315, forcing the conical block 315 to move outward, ultimately causing its outer inclined surface to tightly wed with the inclined plate 317 fixed in the through cavity 301, forming a rigid lock. This wedging force automatically increases with the increase of the load, realizing an adaptive increase in the stiffness of the telescopic mechanism under load.

[0045] Simultaneously, the outward movement of the conical block 315, via the limiting rod 404, causes the sealing plate 405 to move against the elastic force of the threaded spring 406, thereby opening the through hole 403 on the surface of the sliding block 303. The lubricating oil in the oil reservoir 401 then slowly flows into the cavity 301, lubricating the sliding contact surface. With subsequent extension and retraction, the lubricating oil is evenly distributed across the entire inner wall of the cavity 301, achieving continuous and automatic lubrication of the moving parts.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A skid steer loader based on a multi-functional telescopic boom, comprising a loading vehicle body (001), characterized in that: The loading vehicle body (001) is symmetrically and rotatably connected to trapezoidal drive arms (101). A hydraulic cylinder (102) is rotatably connected between the two sets of drive arms (101) and the loading vehicle body (001). A telescopic frame (103) is provided on one side of the two sets of drive arms (101). A telescopic component (002) is provided between the telescopic frame (103) and the drive arm (101). A stabilizing component (003) is provided inside the drive arm (101). A lubrication component (004) is provided on the outside of the drive arm (101). A loading bucket (104) is rotatably connected to one side of the telescopic frame (103). A hydraulic cylinder (105) is symmetrically and rotatably connected between the loading bucket (104) and the telescopic frame (103).

2. A skid steer loader based on a multi-functional telescopic boom according to claim 1, characterized in that: The telescopic assembly (002) includes a hydraulic cylinder three (201), which is installed inside two sets of drive arms (101). The output ends of the two sets of hydraulic cylinder three (201) are equipped with connecting frames (202). The telescopic frame (103) is symmetrically equipped with telescopic arms (203), and the two sets of telescopic arms (203) are rotatably connected to the corresponding connecting frames (202). The two sets of telescopic arms (203) are provided with oblique through slots (204). The inner walls of the two sets of drive arms (101) are equipped with through blocks (205), and the through blocks (205) are slidably connected to the corresponding oblique through slots (204).

3. A skid steer loader based on a multi-functional telescopic boom according to claim 1, characterized in that: The stabilizing component (003) includes a cavity (301), which is symmetrically opened on the sides of the two sets of drive arms (101) and communicates with the interior of the corresponding drive arm (101). Each set of drive arms (101) is provided with a sliding frame (302), and each set of sliding frames (302) is symmetrically installed with a sliding block (303) in sequence on the inner wall of the two sets of sliding frames (302). Each set of sliding blocks (303) is fitted with a rolling ring (304), and the rolling ring (304) is in contact with the inner wall of the corresponding cavity (301).

4. A skid steer loader based on a multi-functional telescopic boom according to claim 3, characterized in that: Both sets of sliding frames (302) are symmetrically equipped with connecting plates (305) at their bottoms. Each set of connecting plates (305) has a sliding cavity (306) on its surface. The telescopic frame (103) is symmetrically rotatably connected to a connecting frame (307) below it. Both sets of connecting frames (307) are rotatably connected to a roller (308) on the side away from the telescopic frame (103). The roller (308) is slidably connected to the corresponding sliding cavity (306) and is located between the corresponding two sets of connecting plates (305).

5. A skid steer loader based on a multi-functional telescopic boom according to claim 2, characterized in that: Both sets of drive arms (101) have a second sliding cavity (309) below them, and the second sliding cavity (309) is connected to the interior of the corresponding drive arm (101). A connecting cylinder (310) is installed between the two sets of connecting frames (202) and the corresponding sliding frame (302), and the connecting cylinder (310) is slidably connected to the second sliding cavity (309).

6. A skid steer loader based on a multi-functional telescopic boom according to claim 5, characterized in that: Both sets of connecting cylinders (310) are connected through push shafts (311), and the two ends of the push shafts (311) extend to the top of the corresponding connecting frame (202) and the bottom of the sliding frame (302), respectively. Both sets of push shafts (311) are fitted with butterfly springs (312), and the butterfly springs (312) are respectively attached to the upper part of the inner wall of the connecting cylinder (310) and the lower part of the surface of the push shafts (311). Both sets of push shafts (311) are fitted with trapezoidal plates (313) at the bottom, and the inclined surface of the trapezoidal plates (313) is attached to the corresponding rollers (308).

7. A skid steer loader based on a multi-functional telescopic boom according to claim 6, characterized in that: Both sets of push shafts (311) are fitted with conical rings (314), and both sets of connecting frames (202) are symmetrically connected through conical blocks (315). The surface of the conical blocks (315) is also fitted with rolling rings (304), and one side of the inclined surface of each set of conical blocks (315) extends into the corresponding through cavity (301).

8. A skid steer loader based on a multi-functional telescopic boom according to claim 7, characterized in that: Both sets of conical blocks (315) have inclined planes (316) on their other side, and the inclined planes (316) of the same set are arranged opposite each other. The inclined planes (316) are in contact with the corresponding conical rings (314). Each set of through cavities (301) has inclined plates (317) installed symmetrically on the top and bottom, and the inclined surface of the inclined plate (317) is arranged opposite to the inclined surface of the conical block (315).

9. A skid steer loader based on a multi-functional telescopic boom according to claim 1, characterized in that: The lubrication assembly (004) includes an oil reservoir (401), which is symmetrically installed on both sides of the sliding frame (302). Each set of oil reservoirs (401) is equipped with a baffle (402). The surface of the baffle (402) is provided with through holes (403) arranged in a ring. A set of sliding blocks (303) inside the sliding frame (302) is also provided with through holes (403), and the through holes (403) are connected to the inside of the oil reservoir (401).

10. A skid steer loader based on a multi-functional telescopic boom according to claim 9, characterized in that: Each set of baffles (402) has a limiting rod (404) that is connected to the inner limit. The limiting rod (404) extends through to the surface of the sliding block (303). One end of the limiting rod (404) is fixedly connected to the conical block (315). A sealing plate (405) is sleeved and fixed on the limiting rod (404). The sealing plate (405) is in contact with the inner wall of the sliding block (303). The sealing plate (405) completely covers the through hole (403) on the surface of the sliding block (303). The area of ​​the sealing plate (405) is smaller than the area of ​​the inner wall of the sliding block (303). Each set of limiting rods (404) is sleeved with a threaded spring (406). The two ends of the threaded spring (406) are in contact with the sealing plate (405) and the baffle (402) respectively.

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