A hydraulic system for moving large mechanical equipment

Abstract

The present application relates to a kind of hydraulic systems for moving large mechanical equipment, comprising: guide rail system, guide rail system is by the mutual coupling of multiple guide rails by coupling pin, for providing support and guide;Walking mechanism, walking mechanism includes wheel frame and roller, and ear plate is fixed on the upper portion of wheel frame, wheel frame is installed on the guide rail, and roller is ridden on guide rail;Lifting mechanism, lifting mechanism includes lifting cylinder, and lifting cylinder cylinder is connected with transfer machine body, other end is connected with the ear plate fixed on the upper portion of the wheel frame, for lifting or landing transfer machine;Pushing cylinder, the piston rod end of pushing cylinder is hinged with transfer machine body, the cylinder body end of pushing cylinder is hinged with the guide rail, for pushing transfer machine or traction guide rail;Hydraulic control system, hydraulic control system is connected with the lifting cylinder and pushing cylinder, for controlling cylinder extension and contraction.This kind of hydraulic systems for moving large mechanical equipment, effectively overcome the bottom plate adsorption force, and pushing efficiency is multiplied.

Description

Technical Field

[0001] This invention relates to the field of underground transportation equipment in coal mines, specifically a hydraulic system for moving large mechanical equipment. Background Technology

[0002] In fully mechanized coal mining faces, roadway bridge-type transfer conveyors (such as the SZZ764 / 315 model) need to be frequently moved forward as the coal face advances. In underground coal mine roadways with soft, water-rich geological conditions, the roadway floor cements, causing a sudden increase in viscosity. This results in the transfer conveyors and other mechanical equipment being firmly held by the floor, leading to a significant increase in resistance when the equipment is lifted and moved. This severely impacts coal mining efficiency and exponentially increases the labor intensity of workers. Therefore, we propose a hydraulic system for moving large mechanical equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic system for moving large mechanical equipment, thereby solving the problems mentioned in the background section. To achieve the above objective, this invention provides the following technical solution: a hydraulic system for moving large mechanical equipment, comprising: A guide rail system is composed of multiple guide rails connected by connecting pins, used to provide support and guidance; The traveling mechanism includes a wheel frame and rollers, with a lug plate fixed to the upper part of the wheel frame. The wheel frame is mounted on the guide rail, and the rollers ride on the guide rail. The lifting mechanism includes a lifting cylinder, the cylinder body of which is connected to the body of the transfer machine, and the other end is connected to a lug plate fixed to the upper part of the wheel frame, for lifting or lowering the transfer machine; The piston rod end of the pusher cylinder is hinged to the body of the transfer machine, and the cylinder body end of the pusher cylinder is hinged to the guide rail, used to push the transfer machine or pull the guide rail; A hydraulic control system is connected to the lifting cylinder and the pushing cylinder to control the extension and retraction of the cylinders. Both the lifting cylinder and the pushing cylinder are single-telescopic double-acting cylinders, and they use high-pressure emulsion as the power medium.

[0004] Preferably, there are 10 lifting cylinders, which are symmetrically and evenly distributed on both sides of the loader. The lifting cylinders have a cylinder diameter of 125mm, a column diameter of 100mm, a stroke of 250mm, a working pressure of 31.4MPa, and a single cylinder thrust of 385.3kN. The loader body is fixed with sleeves corresponding to the lifting cylinders. During installation, the lifting cylinders are inserted from the bottom of the sleeves and fixed inside the sleeves.

[0005] Preferably, there are two push cylinders, which are symmetrically and evenly distributed on both sides of the loader. The cylinder diameter is 200mm, the column diameter is 120mm, the stroke is 1100mm, the working pressure is 31.4MPa, and the thrust of a single cylinder is 986.5kN.

[0006] Preferably, the hydraulic control system includes a distribution plate, a lifting control valve, and a pushing control valve. One end of the distribution plate is connected to the lifting control valve via a high-pressure hose, and the other end is connected to the working chamber of each of the lifting cylinders via a high-pressure hose. The pushing control valve is connected to the working chamber of each pushing cylinder via a high-pressure hose.

[0007] Preferably, the five guide rails located on one side of the loader have lengths of 3.35 meters, 3.395 meters, 2.32 meters, 2.15 meters, and 3.82 meters from front to back, respectively. The ends of two adjacent guide rails are connected to each other by Φ50 connecting pins, and the maximum rotation angle between adjacent guide rails is ±5°.

[0008] Preferably, the guide rail includes a guide bridge and a support base arranged vertically. The upper surface of the guide bridge has an upwardly convex arc-shaped cross-section. Both sides of the guide bridge are provided with grooves that run along the length direction. The lower inner wall of the groove is inclined downward towards the opening side. The bottom surface of the guide bridge is provided with a slide rail, and a slider is slidably connected in the slide rail. The support base has an inverted T-shaped structure, and the upper end of the support base is fixedly connected to the slider.

[0009] Preferably, both sides of the lower end of the support base are hinged with wingspan plates, and the side of the wingspan plate away from the support base is hinged to the lower end of the guide bridge on the corresponding side via a connecting rod.

[0010] Preferably, the number of walking mechanisms corresponds to the number of lifting cylinders, and the cross-section of the wheel frame is a U-shaped structure with the opening facing downwards. The inner side wall of the wheel frame is fixed with a limiting block that matches the slide groove. Both ends of the wheel frame are rotatably connected to rollers. The peripheral wall of the roller matches the upper surface of the guide bridge. Both ends of the wheel frame are equipped with a cleaning mechanism driven by the rollers. The cleaning mechanism cleans the stone chips on the guide bridge when the rollers roll, preventing the rollers from getting stuck during travel.

[0011] Preferably, the cleaning mechanism includes protective covers at both ends of the roller shaft, the protective covers being fixed to the outer wall of the wheel frame, one end of the roller shaft located inside the protective cover being coaxially fixedly connected to a bevel gear one, a shaft one being rotatably connected through and fixedly axially to the side wall of the protective cover, and the shaft one being perpendicular to the roller shaft, the one end of the shaft one located inside the protective cover being coaxially fixedly connected to a bevel gear two, and the bevel gear two being meshed with the bevel gear one for transmission, so that when the roller rotates, the two shafts are driven to rotate synchronously together through the cooperation of the two sets of bevel gears two and bevel gear one, and the one end of the shaft one located outside the protective cover being coaxially fixedly connected to a pulley one, and the two pulleys one being connected by a brush belt transmission.

[0012] Preferably, a support plate corresponding to the protective cover is fixed to the lower end of the outer side wall of the wheel frame, and a sliding rod is fixed between the support plate and the protective cover. The sliding rod has a regular polygonal cross-section, and a matching sliding sleeve is fitted and slidably connected on the sliding rod. The upper end of the sliding sleeve is connected to the bottom surface of the protective cover through a spring. A second shaft is fixed on the peripheral wall of the sliding sleeve, and the second shaft is parallel to the first shaft. A second pulley is rotatably connected to the second shaft, and the two pulleys are connected by a brush belt drive.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a "lifting-rolling pushing" technical solution to convert the sliding friction between the transfer machine and the roadway floor into rolling friction between the roller and the guide rail. Under the same equipment gravity conditions, the rolling friction coefficient is much smaller than the sliding friction coefficient, the pushing resistance is significantly reduced, and the pushing efficiency is increased several times.

[0014] This invention employs a high-thrust design for the lifting cylinders (385.3kN per cylinder, total thrust of 3853kN for 10 cylinders), enabling it to overcome the strong adhesion force generated by the cementing of the base plate on the equipment under "three soft" (soft roof, soft coal, soft bottom) and water-rich geological conditions, effectively lifting the equipment and completely solving the industry problem of equipment being "stuck" to the base plate and unable to move in the prior art.

[0015] The entire moving process is automatically completed through a hydraulic system, which cycles through four steps: "lifting, pushing, lowering, and resetting." It requires virtually no human intervention, reducing the number of operators from multiple in the traditional method to 1-2, thus significantly reducing the labor intensity of workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the walking principle of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a front view of the walking mechanism in this invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the walking mechanism driving the guide rail system in the ground contact state in this invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the walking mechanism driving the guide rail system in the off-ground state in this invention; Figure 6 This is a schematic diagram of the hydraulic pipeline connection structure in this invention.

[0017] In the diagram: 1. Guide rail system; 2. Lifting mechanism; 3. Traveling mechanism; 4. Pushing cylinder; 5. Sleeve; 6. Lifting cylinder; 7. Liquid distribution plate; 8. Lifting control valve; 9. Pushing control valve; 10. Protective cover; 11. Bevel gear one; 12. Shaft one; 13. Pulley one; 14. Bevel gear two; 15. Brush belt; 16. Shaft two; 17. Pulley two; 18. Support plate; 19. Slide rod; 20. Sliding sleeve; 21. Spring; 101. Guide bridge; 102. Support base; 103. Slide rail; 104. Wing plate; 105. Connecting rod; 106. Slide track; 107. Slider; 301. Wheel frame; 302. Ear plate; 303. Roller; 304. Limit block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 6 This invention provides a technical solution: a hydraulic system for moving large mechanical equipment, comprising: Guide rail system 1, which is composed of multiple guide rail segments connected to each other by connecting pins, is used to provide support and guidance; The walking mechanism 3 includes a wheel frame 301 and a roller 303. The upper part of the wheel frame 301 is fixed with an ear plate 302. The wheel frame 301 is mounted on the guide rail, and the roller 303 rides on the guide rail. The lifting mechanism 2 includes a lifting cylinder 6, the cylinder body of which is connected to the body of the transfer machine, and the other end is connected to the ear plate 302 fixed to the upper part of the wheel frame 301, for lifting or lowering the transfer machine; Push cylinder 4, the piston rod end of push cylinder 4 is hinged to the body of transfer machine, and the cylinder body end of push cylinder 4 is hinged to the guide rail, used to push transfer machine or pull guide rail; A hydraulic control system is connected to the lifting cylinder 6 and the pushing cylinder 4, and is used to control the extension and retraction of the cylinders. Both the lifting cylinder 6 and the pushing cylinder 4 are single-telescopic double-acting cylinders, and they use high-pressure emulsion as the power medium.

[0020] In this embodiment, there are 10 lifting cylinders 6, which are symmetrically and evenly distributed on both sides of the loader. The lifting cylinder 6 has a cylinder diameter of 125mm, a column diameter of 100mm, a stroke of 250mm, a working pressure of 31.4MPa, and a single cylinder thrust of 385.3kN. The loader body is fixed with sleeves 5 corresponding to the lifting cylinders 6. During installation, the lifting cylinder 6 is inserted into the sleeve 5 from the bottom and fixed inside the sleeve 5.

[0021] In this embodiment, there are two push cylinders 4, which are symmetrically and evenly distributed on both sides of the loader. The cylinder diameter of the push cylinder 4 is 200mm, the column diameter is 120mm, the stroke is 1100mm, the working pressure is 31.4MPa, and the thrust of a single cylinder is 986.5kN.

[0022] In this embodiment, the hydraulic control system includes a distribution plate 7, a lifting control valve 8, and a push control valve 9. One end of the distribution plate 7 is connected to the lifting control valve 8 via a high-pressure hose, and the other end is connected to the working chamber of each of the lifting cylinders 6 via a high-pressure hose. The push control valve 9 is connected to the working chamber of each of the push cylinders 4 via a high-pressure hose.

[0023] In this embodiment, the five guide rails located on one side of the loader have lengths of 3.35 meters, 3.395 meters, 2.32 meters, 2.15 meters, and 3.82 meters from front to back, respectively. The ends of two adjacent guide rails are connected to each other by Φ50 connecting pins, and the maximum turning angle between adjacent guide rails is ±5°. This ±5° maximum turning angle design allows the system to adapt to local undulations in the tunnel floor; when the slope is steeper, the guide rails can be partially shimmed to ensure normal operation.

[0024] In this embodiment, the guide rail includes a guide bridge 101 and a support base 102 arranged vertically. The upper surface of the guide bridge 101 has an upwardly convex arc-shaped cross-section. Both sides of the guide bridge 101 are provided with a slide groove 103 arranged along the length direction, and the lower inner wall of the slide groove 103 is inclined downward towards the opening side. The bottom surface of the guide bridge 101 is provided with a slide rail 106, and a slider 107 is slidably connected in the slide rail 106. The support base 102 has an inverted T-shaped structure, and the upper end of the support base 102 is fixedly connected to the slider 107. Both sides of the lower end of the support base 102 are hinged with a flap plate 104, and the side of the flap plate 104 away from the support base 102 is hinged to the lower end of the guide bridge 101 on the corresponding side through a connecting rod 105.

[0025] In this embodiment, the number of walking mechanisms 3 corresponds to the number of lifting cylinders 6, and the cross-section of the wheel frame 301 is a U-shaped structure with the opening facing downwards. The inner side wall of the wheel frame 301 is fixed with a limiting block 304 that matches the slide groove 103. Both ends of the wheel frame 301 are rotatably connected to rollers 303. The peripheral wall of the rollers 303 matches the upper surface of the guide bridge 101. The arc-shaped matching structure is adopted, which increases the contact area and improves stability. On the other hand, it can limit the rollers 303 from sliding laterally on the guide bridge 101 and causing derailment. Both ends of the wheel frame 301 are provided with cleaning mechanisms driven by the rollers 303. The cleaning mechanisms clean the stone chips on the guide bridge 101 when the rollers 303 are rolling, so as to prevent the rollers 303 from getting stuck during the movement.

[0026] In this embodiment, the cleaning mechanism includes protective covers 10 disposed at both ends of the roller 303's rotating shaft. The protective covers 10 are fixed to the outer wall of the wheel frame 301. One end of the roller 303's rotating shaft located inside the protective cover 10 is coaxially fixedly connected to a bevel gear 11. A shaft 12 is rotatably connected through and fixedly to the side wall of the protective cover 10, and the shaft 12 is perpendicular to the rotating shaft. One end of the shaft 12 located inside the protective cover 10 is coaxially fixedly connected to a bevel gear 14, and the bevel gear 14 meshes with the bevel gear 11 for transmission. This allows the roller 303 to rotate, driving the two shafts 12 to rotate synchronously in the same direction through the cooperation of the two sets of bevel gears 14 and bevel gear 11. The shaft 12 is located inside the protective cover 10. One end of the outer side of the protective cover 10 is coaxially fixedly connected to a pulley 13. The two pulleys 13 are connected by a brush belt 15. The lower end of the outer side wall of the wheel frame 301 is fixed with a support plate 18 corresponding to the protective cover 10. A sliding rod 19 is fixed between the support plate 18 and the protective cover 10. The cross-section of the sliding rod 19 is a regular polygonal structure. A matching sliding sleeve 20 is sleeved and slidably connected on the sliding rod 19. The upper end of the sliding sleeve 20 is connected to the bottom surface of the protective cover 10 through a spring 21. A shaft 16 is fixed on the peripheral wall of the sliding sleeve 20. The shaft 16 is parallel to the shaft 12. A pulley 17 is rotatably connected to the shaft 16. The two pulleys 17 are connected by a brush belt 15.

[0027] Working principle and advantages of this invention: The hydraulic system for moving large mechanical equipment operates as follows: Using the underground roadway of Longgong Coal Mine in Yuanping City, Shaanxi Province as an application scenario, the self-propelled hydraulic system of this invention was installed on both sides of an SZZ764 / 315 type roadway bridge transfer conveyor. The system's rated fluid supply pressure is 31.4 MPa, and the medium is emulsion.

[0028] Initial state (e.g.) Figure 1 (as shown in a): All cylinder piston rods are in the retracted state, the transfer machine body is on the ground (the equipment is directly supported on the tunnel floor), and the guide rail is suspended about 200mm off the ground.

[0029] Step 1: Raise the fuselage (e.g.) Figure 1 (as shown in b) With the handle of the lifting control valve 8 in the raised position, the high-pressure emulsion (pressure 31.4MPa) is distributed by the liquid distribution plate 7 and enters the rodless chamber of each lifting cylinder 6 through the high-pressure hose. The piston rod extends, and one end of the lifting cylinder 6 presses the guide rail downward to fit against the roadway floor through the traveling mechanism 3. The other end lifts the transfer machine body upward through the piston rod, so that the machine body is completely separated from the roadway floor.

[0030] Step Two: Move the fuselage (e.g.) Figure 1 (as shown in c) After confirming that the guide rail is fully in contact with the tunnel floor, lift it to the correct position, reset the handle of the lifting control valve 8, and then place the handle of the push control valve 9 in the push position. The high-pressure emulsion enters the rodless chamber of the push cylinder 4 through the high-pressure hose, and the piston rod extends. Because the guide rail is pressed against the tunnel floor by the lifting oil 6, a huge static friction force is formed between the guide rail and the tunnel floor. Meanwhile, the roller 303 and the guide rail have rolling friction (the coefficient of friction is much smaller than that of sliding friction). Under the same equipment gravity conditions, the roller 303 rolls along the guide rail first, driving the entire transfer machine to move forward one step (1100mm) along the guide rail.

[0031] Step 3: Landing the aircraft (e.g.) Figure 1 (as shown in d) Once the machine is in place, the handle of the height adjustment valve 8 is placed in the lower position, liquid enters the rod chamber of the lifting cylinder 6, the piston rod retracts, the transfer machine body descends smoothly and rests on the tunnel floor. At the same time, the guide rail is lifted upward by the lifting cylinder 6, detaches from contact with the tunnel floor, and returns to a suspended state.

[0032] Step 4: Reset the guide rail (e.g.) Figure 1 (as shown in a) With the push control valve 9 handle in the pull position, liquid enters the rod chamber of the push cylinder 4, and the piston rod retracts. At this time, the transfer machine body has landed (weighing about 15.8 tons) and becomes a fixed anchor point. When the push cylinder 4 retracts, the transfer machine body serves as the force fulcrum, and the guide rail roadway is dragged forward along the bottom plate by one step (1100mm) to return to the initial position.

[0033] This completes one full work cycle. Repeating steps one through four above will allow the transfer machine to move forward continuously.

[0034] This invention utilizes a "lifting-rolling pushing" technical solution to convert the sliding friction between the loader and the roadway floor into rolling friction between the roller 303 and the guide rail. This significantly reduces pushing resistance and improves pushing efficiency. The lifting cylinder employs a high-thrust design (385.3kN per cylinder), enabling it to overcome the adhesion force generated by the muddy floor under "soft, watery" geological conditions, effectively lifting the equipment and solving the industry problem of equipment being "stuck" and unable to move in existing technologies. The entire moving process is automatically completed by the hydraulic system, requiring virtually no human intervention, thus multiplying the efficiency of coal mining face advancement. After more than 8 months of actual use verification, the system operates well, still able to push normally even when the floor encounters cementation, with short single-cycle time and reducing the number of operators to 1-2, achieving the design goals.

[0035] As mentioned earlier, during the descent of the guide rail, if Figures 3 to 5 As shown, when the support base 102 touches the ground, the downward movement of the guide bridge 101 unfolds the two wingspan plates 104 through the connecting rod 105, increasing the contact area with the ground. This greatly improves the support stability of the entire system and increases the static friction with the tunnel floor, thereby ensuring the reliability of the equipment movement. During the upward movement of the guide rail, the guide bridge 101 first folds up through the connecting rod 105, thereby reducing the overall adsorption force on the guide rail. After the wingspan plates 104 fold up, the support base 102 is then lifted, thereby separating the large contact surface step by step, thereby reducing the adsorption resistance of the tunnel floor on the guide rail, making the guide rail lifting smoother and reducing the load on the lifting cylinder 6.

[0036] As mentioned earlier, during the rolling process of the roller 303 driven by the wheel frame 301 on the guide bridge 101, the roller 303 drives the two shafts 12 to rotate through the bevel gear 11 and bevel gear 14, thereby causing the shafts 12 to drive the pulley 13 to rotate, which in turn causes the brush belt 15 to run and remove dirt such as stone chips from the upper surface of the guide bridge 101. Under the action of the spring 21, the sliding sleeve 20 drives the pulley 17 through the shaft 21 to press the brush belt 15 tightly against the upper surface of the guide bridge 101, thereby ensuring the cleaning effect and effectively avoiding the jamming and abnormal wear of the roller 303 caused by hard particles such as stone chips, ensuring smooth equipment movement and extending the service life of the rollers and guide rails.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A hydraulic system for moving large mechanical equipment, characterized in that: include: The guide rail system (1) is composed of multiple guide rails connected to each other by connecting pins, and is used to provide support and guidance; The walking mechanism (3) includes a wheel frame (301) and a roller (303), and an ear plate (302) is fixed on the upper part of the wheel frame (301). The wheel frame (301) is mounted on the guide rail, and the roller (303) rides on the guide rail. The lifting mechanism (2) includes a lifting cylinder (6), and the cylinder body of the lifting cylinder (6) is connected to the body of the transfer machine, and the other end is connected to the ear plate (302) fixed on the upper part of the wheel frame (301), for lifting or lowering the transfer machine; Pushing cylinder (4), the piston rod end of the pushing cylinder (4) is hinged to the body of the transfer machine, and the cylinder end of the pushing cylinder (4) is hinged to the guide rail, used to push the transfer machine or pull the guide rail; A hydraulic control system is connected to the lifting cylinder (6) and the pushing cylinder (4) and is used to control the extension and retraction of the cylinders; The lifting cylinder (6) and the pushing cylinder (4) are both single telescopic double-acting cylinders, and use high-pressure emulsion as the power medium.

2. The hydraulic system for moving large mechanical equipment according to claim 1, characterized in that: The number of lifting cylinders (6) is 10, and they are symmetrically and evenly distributed on both sides of the loader. The lifting cylinder (6) has a cylinder diameter of 125mm, a column diameter of 100mm, a stroke of 250mm, a working pressure of 31.4MPa, and a single cylinder thrust of 385.3kN. The loader body is fixed with sleeves (5) corresponding to the lifting cylinders (6). During installation, the lifting cylinder (6) is inserted from the lower part of the sleeve (5) and fixed inside the sleeve (5).

3. A hydraulic system for moving large mechanical equipment according to claim 2, characterized in that: There are two push cylinders (4), which are symmetrically and evenly distributed on both sides of the loader. The cylinder diameter of each push cylinder (4) is 200mm, the column diameter is 120mm, the stroke is 1100mm, the working pressure is 31.4MPa, and the single cylinder thrust is 986.5kN.

4. A hydraulic system for moving large mechanical equipment according to claim 3, characterized in that: The hydraulic control system includes a distribution plate (7), a lifting control valve (8), and a push control valve (9). One end of the distribution plate (7) is connected to the lifting control valve (8) via a high-pressure hose, and the other end is connected to the working chamber of each of the lifting cylinders (6) via a high-pressure hose. The push control valve (9) is connected to the working chamber of each of the push cylinders (4) via a high-pressure hose.

5. A hydraulic system for moving large mechanical equipment according to claim 2, characterized in that: The five guide rails located on one side of the loader have lengths of 3.35 meters, 3.395 meters, 2.32 meters, 2.15 meters, and 3.82 meters from front to back, respectively. The ends of two adjacent guide rails are connected to each other by Φ50 connecting pins, and the maximum rotation angle between adjacent guide rails is ±5°.

6. A hydraulic system for moving large mechanical equipment according to claim 2, characterized in that: The guide rail includes a guide bridge (101) arranged vertically and a support base (102). The upper surface of the guide bridge (101) has an arc-shaped cross-section with an upward convex shape. Both sides of the guide bridge (101) are provided with a slide groove (103) arranged along the length direction. The lower inner wall of the slide groove (103) is inclined downward towards the opening side. The bottom surface of the guide bridge (101) is provided with a slide rail (106), and a slider (107) is slidably connected in the slide rail (106). The support base (102) has an inverted T-shaped structure, and the upper end of the support base (102) is fixedly connected to the slider (107).

7. A hydraulic system for moving large mechanical equipment according to claim 6, characterized in that: Both sides of the lower end of the support base (102) are hinged with wingspan plates (104), and the side of the wingspan plate (104) away from the support base (102) is hinged to the lower end of the guide bridge (101) on the corresponding side through a connecting rod (105).

8. A hydraulic system for moving large mechanical equipment according to claim 6, characterized in that: The number of the walking mechanism (3) is set in correspondence with the lifting cylinder (6), and the cross section of the wheel frame (301) is a U-shaped structure with the opening facing downward. The inner side wall of the wheel frame (301) is fixed with a limiting block (304) that is compatible with the slide groove (103). Both ends of the wheel frame (301) are rotatably connected with rollers (303) on a fixed axis. The peripheral wall of the roller (303) is compatible with the upper surface of the guide bridge (101). Both ends of the wheel frame (301) are provided with a cleaning mechanism driven by the roller (303). The cleaning mechanism cleans the stone chips on the guide bridge (101) when the roller (303) rolls, so as to avoid the roller (303) from getting stuck during the movement.

9. A hydraulic system for moving large mechanical equipment according to claim 8, characterized in that: The cleaning mechanism includes protective covers (10) located at both ends of the roller (303) shaft. The protective covers (10) are fixed to the outer wall of the wheel frame (301). One end of the roller (303) shaft located inside the protective cover (10) is coaxially fixedly connected to a bevel gear (11). A shaft (12) is rotatably connected through and fixedly axially to the side wall of the protective cover (10), and the shaft (12) is perpendicular to the shaft. The shaft (12) is located within the protective cover (10). 0) One end of the inner part is coaxially fixedly connected to bevel gear 2 (14), and bevel gear 2 (14) meshes with bevel gear 1 (11) for transmission connection, so that when the roller (303) rotates, the two shafts 1 (12) are driven to rotate synchronously in the same direction through the cooperation of two sets of bevel gear 2 (14) and bevel gear 1 (11). The shaft 1 (12) is located outside the protective cover (10) and one end is coaxially fixedly connected to pulley 1 (13). The two pulleys 1 (13) are connected by a brush belt (15) for transmission.

10. A hydraulic system for moving large mechanical equipment according to claim 9, characterized in that: The lower end of the outer wall of the wheel frame (301) is fixed with a support plate (18) corresponding to the protective cover (10), and a slide rod (19) is fixed between the support plate (18) and the protective cover (10). The slide rod (19) has a regular polygonal cross-section. A matching slide sleeve (20) is sleeved and slidably connected on the slide rod (19). The upper end of the slide sleeve (20) is connected to the bottom surface of the protective cover (10) through a spring (21). A shaft rod two (16) is fixed on the peripheral wall of the slide sleeve (20). The shaft rod two (16) and the shaft rod one (12) are arranged parallel to each other. A pulley two (17) is rotatably connected to the shaft rod two (16) on a fixed axis. The two pulley two (17) are connected by a brush belt (15).

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