A shield machine propelling oil cylinder dismounting device and method thereof

Abstract

This invention discloses a device and method for assembling and disassembling propulsion cylinders for a tunnel boring machine (TBM). The device includes a steel plate, a spacing adjustment assembly, and a cylinder fixing assembly. A mounting frame with a U-shaped structure is provided on the surface of the steel plate. The spacing adjustment assembly is mounted on the steel plate and the mounting frame, and includes a lateral adjustment part and a longitudinal adjustment part. The lateral adjustment part adjusts the lateral spacing, and the longitudinal adjustment part adjusts the spacing between the two cylinder fixing assemblies. The cylinder fixing assembly includes a drive part, a fixing frame, an adapter part, and a fixing part. The fixing part is mounted on the mounting plate to fix the cylinders. Through the cylinder fixing assembly, the drive part moves the first and second abutments on the adapter part towards the same center. During this movement, the abutments can come into contact with the surfaces of propulsion cylinders of different diameters, thus adapting to propulsion cylinders of different sizes.

Description

Technical Field

[0001] This invention relates to the field of shield machine propulsion cylinder disassembly and assembly technology, and in particular to a shield machine propulsion cylinder disassembly and assembly device and method. Background Technology

[0002] Shield tunneling is widely used in the construction of urban subway tunnels. As a large-scale underground construction machinery, the shield tunneling process includes several basic steps: soil excavation, shield machine jacking forward, excavated soil transportation, and segment assembly. During operation, the shield machine cutterhead scrapes and breaks up the soil in front of it using cutting rollers. The shield machine propels itself forward by pushing the rear ring of tunnel segments using propulsion cylinders. A screw conveyor discharges the excavated soil from the soil chamber, while a segment assembly machine assembles and supports the tunnel segments, thus realizing the shield tunneling operation.

[0003] During tunnel boring machine (TBM) excavation, propulsion cylinders may be damaged and require replacement, or they may need to be disassembled and assembled separately under unconventional circumstances. Due to the long length and heavy weight of the propulsion cylinders, the limited working space for their distribution along the circumference of the shield, and the fact that the top propulsion cylinders are less than 10cm away from the shield, disassembly and assembly using hoists or other lifting equipment is very difficult, inefficient, and risky. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a device and method for disassembling and assembling the propulsion cylinder of a tunnel boring machine, thereby effectively reducing the difficulty of cylinder disassembly and assembly, improving work efficiency, and greatly increasing safety.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a shield tunneling machine propulsion cylinder disassembly and assembly device, comprising a steel plate, a spacing adjustment component and a cylinder fixing component; The surface of the steel plate is provided with a mounting frame, which has a U-shaped structure, and the spacing adjustment component is provided on the steel plate and the mounting frame; The spacing adjustment assembly includes a lateral adjustment part and a longitudinal adjustment part. The lateral adjustment part is used to adjust the lateral spacing, and the longitudinal adjustment part is used to adjust the spacing between the two cylinder fixing assemblies on one side. The hydraulic cylinder fixing assembly includes a drive unit, a fixing frame, an adapter unit, and a fixing unit. The fixing frame is mounted on a mounting plate, and the fixing unit is mounted on the mounting plate to fix the hydraulic cylinder. The adapter includes a screw rod screwed onto a fixed frame, a second bevel gear at one end of the screw rod, a movable frame screwed onto the surface of the screw rod, a first abutment block penetrating the fixed frame on the movable frame, and two second abutment blocks, each penetrating the fixed frame, slidably disposed on the movable frame. The drive unit is used to drive the screw rod to rotate via the second bevel gear. The screw is used to rotate and drive the movable frame connected to it to move, thereby driving the first abutment block and the second abutment block to move towards the same center, thus adapting to hydraulic cylinders of different sizes.

[0006] Furthermore, the lateral adjustment part includes a horizontal shaft and a first dual-axis motor. There are two horizontal shafts, both of which are mounted on the mounting bracket. The first dual-axis motor is mounted on the mounting bracket. Lead screws are connected to the output shafts on both sides of the first dual-axis motor. The threads on the lead screws on both sides are in opposite directions. Mounting seats that slide on the surfaces of the two horizontal shafts are screwed onto the surfaces of the lead screws on both sides. The first dual-axis motor is used to drive the lead screws on both sides to rotate, thereby driving the mounting seats that are screwed to the lead screws on both sides to move to the opposite side or the opposite side, so as to adjust the lateral spacing.

[0007] Furthermore, the longitudinal adjustment part includes a mounting plate and a hydraulic cylinder. There are two mounting plates, both of which are slidably disposed on the mounting base. There are two hydraulic cylinders, both of which are disposed on the surface of the mounting base. The output ends of the two hydraulic cylinders are connected to connecting plates distributed and connected to the two mounting plates. The cylinder fixing assembly is disposed on the mounting plate. The hydraulic cylinder is used to drive the connecting plate and the mounting plate to move, thereby realizing the adjustment of the distance between the two cylinder fixing components on one side.

[0008] Furthermore, the drive unit includes a second dual-axis motor mounted on the mounting base, and rotating shafts are connected to both output shafts of the second dual-axis motor. The drive unit also includes two vertical plates, each mounted on a mounting plate on the same side. Each of the two vertical plates has a sleeve that is rotatably fitted onto the surface of the rotating shaft. Each of the two sleeves has a first bevel gear that meshes with the second bevel gear.

[0009] Furthermore, the cross-section of the rotating shaft is cross-shaped, the opening on the sleeve is cross-shaped, and the size of the opening is adapted to the cross-section size of the rotating shaft.

[0010] Furthermore, the fixed frame includes an arc-shaped plate located in the middle and L-shaped plates connected to both sides of the arc-shaped plate, and the movable frame includes a horizontally arranged horizontal plate and an inclined plate arranged on the horizontal plate, and a rectangular through hole is provided on the inclined plate.

[0011] Furthermore, the first abutment, which extends through and into the recess of the fixing frame, has an arc-shaped surface at one end, and the second abutment, which extends through and into the recess of the fixing frame, also has an arc-shaped surface at one end.

[0012] Furthermore, the fixing part includes four bolts, all of which are mounted on the same fixing frame. Each of the four bolts has a pressure plate fitted onto its surface and a nut screwed onto its surface.

[0013] Furthermore, a grab head bolt is welded at the center point of the steel plate.

[0014] A method for disassembling and assembling a tunnel boring machine (TBM) propulsion cylinder, comprising the TBM propulsion cylinder disassembly and assembly device described in any one of the claims, wherein the method is as follows: S1. The hydraulic cylinder disassembly and assembly device is moved to the front end by the shield machine's feeder, to the position that the assembly machine can grab. S2. The assembly machine grabs the lifting head bolts of the hydraulic cylinder disassembly and assembly device. The two sets of hydraulic cylinder fixing components of the device are in the front-to-back direction. After the assembly machine's lifting head is aligned, the grab head clamps. After clamping, the nylon plate on the assembly machine's gripping plate is close to the hydraulic cylinder disassembly and assembly device. S3. After the assembly machine grabs the hydraulic cylinder disassembly and assembly device, by controlling the assembly machine to move forward and backward, rotate left and right, tilt and flip, the hydraulic cylinder disassembly and assembly device is brought close to the hydraulic cylinder to be disassembled. S4. Use 100-type channel steel to weld U-shaped clips on the inner wall of the shield body. The size of the U-shaped clips is based on the size of a single set of hydraulic cylinders. Along the direction of extension and retraction of the propulsion hydraulic cylinder, weld two U-shaped clips from the propulsion hydraulic cylinder clamp to the last ring segment of the shield tail for temporary support when the hydraulic cylinder is pulled outward. S5. Install a 5T hand chain hoist along the direction of the cylinder to be removed at the last ring segment, with the hand chain hoist and the cylinder to be removed on the same line. S6. Tighten the 5T hoist at the rear and pull the cylinder outward to the first U-shaped clamp position. After checking the stability of the cylinder, continue to pull it outward to the second U-shaped clamp position. Then operate the assembly machine to move forward to the front end and extend and retract the red and blue cylinders to bring the cylinder disassembly and assembly device close to the push cylinder. S7. Before approaching the propulsion cylinder, remove the pressure plate and nut. Then, adjust the cylinder disassembly and assembly device according to the specifications of the propulsion cylinder so that it can be adapted to the propulsion cylinder to be disassembled. Then, make the first abutment block and the second abutment block close to the propulsion cylinder and install the pressure plate and nut. At this time, the first abutment block, the second abutment block and the pressure plate clamp the propulsion cylinder. S8. Control the assembly machine to move backward, so that the push cylinder is completely disengaged. Adjust the red and blue cylinders and gripping plate of the assembly machine to make the push cylinder disengage from the front shield flange face. Rotate the assembly machine to turn the push cylinder to the bottom and loosen the pressure plate and nut. S9. Use a feeder to move the propulsion cylinder to the bottom of the equipment bridge, and use a double beam hoist to lift the propulsion cylinder to the flatbed of the battery truck for transportation.

[0015] The beneficial effects of this invention are reflected in: 1. In use, the present invention, through the setting of the spacing adjustment component, when it is necessary to disassemble the propulsion cylinder, can be adjusted according to the length and spacing of adjacent propulsion cylinders by means of the lateral adjustment part and the longitudinal adjustment part. When the lateral adjustment part is working, it will drive the mounting seats on both sides to move to the opposite side or the opposite side, thereby realizing the spacing adjustment to adapt to propulsion cylinders with different spacing. Under the action of the longitudinal adjustment component, it can drive the two cylinder fixing components on the same mounting seat to move to the opposite side or the opposite side. At this time, due to the spacing adjustment between the two cylinder fixing components, propulsion cylinders of different lengths can be fixed. 2. In use, the present invention uses a hydraulic cylinder fixing assembly. The drive unit operates to move the first and second abutments on the adapter towards the same center. During the movement, they can come into contact with the surfaces of hydraulic cylinders of different diameters, thus adapting to hydraulic cylinders of different sizes. When the first and second abutments are in contact with the surface of the hydraulic cylinder, the upper pressure plate is installed and fixed by the nut. At this point, the hydraulic cylinder is clamped, and then the hydraulic cylinder can be transferred using an assembly machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 This is a schematic diagram of the spacing adjustment component of the present invention; Figure 5 This is a cross-sectional view of the mounting base of the present invention; Figure 6 This is a partial structural schematic diagram of the hydraulic cylinder fixing assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the movable frame of the present invention.

[0017] In the picture: 1. Steel plate; 2. Mounting bracket; 3. Horizontal shaft; 4. First dual-axis motor; 5. Lead screw; 6. Mounting base; 7. Mounting plate; 8. Hydraulic cylinder; 9. Connecting plate; 10. Second dual-axis motor; 11. Rotating shaft; 12. Vertical plate; 13. Sleeve; 14. First bevel gear; 15. Fixed bracket; 16. Screw; 17. Second bevel gear; 18. Movable frame; 19. First abutment block; 20. Second abutment block; 21. Bolt; 22. Pressure plate; 23. Nut; 24. Grab head bolt. 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 a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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 Figure 1-7 The present invention discloses a device for disassembling and assembling a shield tunneling machine propulsion cylinder, comprising a steel plate 1, a spacing adjustment assembly and a cylinder fixing assembly; A mounting bracket 2 is provided on the surface of the steel plate 1. The mounting bracket 2 has a U-shaped structure.

[0020] The spacing adjustment assembly is mounted on the steel plate 1 and the mounting frame 2. The spacing adjustment assembly includes a horizontal adjustment part and a vertical adjustment part. The lateral adjustment section is used to adjust the lateral spacing; The lateral adjustment part includes a horizontal shaft 3 and a first dual-axis motor 4. There are two horizontal shafts 3, both of which are mounted on the mounting frame 2. The first dual-axis motor 4 is mounted on the mounting frame 2. Lead screws 5 are connected to the output shafts on both sides of the first dual-axis motor 4. Under the action of the first dual-axis motor 4, the lead screws 5 on both sides are driven to rotate synchronously. The threads on the two lead screws 5 are in opposite directions. The surfaces of the two lead screws 5 are screwed with mounting seats 6 that slide on the surfaces of the two horizontal shafts 3. The mounting seats 6 have an inverted U-shaped structure and a horizontally set rectangular through hole on their surface. Under the action of the two horizontal axes 3, the mounting seats 6 on both sides can only move horizontally in the opposite direction along the setting of the horizontal axes 3. At the same time, since the surface threads of the lead screws 5 on both sides are opposite, when the lead screws 5 on both sides rotate synchronously, they will drive the mounting seats 6 on both sides to move synchronously to the opposite side or the side away from each other. The longitudinal adjustment section is used to adjust the distance between the two cylinder fixing assemblies on one side; The longitudinal adjustment part includes a mounting plate 7 and a hydraulic cylinder 8. There are two mounting plates 7, and the opposite ends of the two mounting plates 7 are located in the rectangular through hole of the mounting base 6. The opposite ends of the two mounting plates 7 pass through and extend to the outside of the mounting base 6. At the same time, the surface of the mounting plate 7 slides against the mounting base 6. There are two hydraulic cylinders 8, and both are set on the surface of the mounting base 6. The output ends of the two hydraulic cylinders 8 are connected to connecting plates 9 distributed and connected to the two mounting plates 7. The cylinder fixing components are set on the mounting plates 7. Through the connection of the connecting plates 9, the mounting plates 7 on both sides can be moved when the hydraulic cylinders 8 are working and extending or retracting, thereby controlling the distance between the cylinder fixing components on the mounting plates 7 on both sides and realizing the adjustment of the distance.

[0021] The hydraulic cylinder fixing assembly includes a drive unit, a fixing frame 15, an adapter unit, and a fixing unit. The fixing frame 15 is mounted on the mounting plate 7, and the fixing frame 15 includes an arc-shaped plate located in the middle and L-shaped plates connected to both sides of the arc-shaped plate. The drive unit includes a second dual-axis motor 10 mounted on the mounting base 6. Both output shafts of the second dual-axis motor 10 are connected to rotating shafts 11. The cross section of the rotating shafts 11 is cross-shaped. Under the action of the second dual-axis motor 10, the rotating shafts 11 on both sides are driven to rotate synchronously. The drive unit also includes two vertical plates 12, which are respectively set on two mounting plates 7 on the same side. Each vertical plate 12 has a sleeve 13 rotatably mounted on the surface of the rotating shaft 11. The opening on the sleeve 13 is cross-shaped and the size of the opening is adapted to the cross-sectional size of the rotating shaft 11. Through the adaptation relationship between the two, when the rotating shaft 11 rotates, the sleeve 13 can be rotated. After the sleeve 13 is displaced with the mounting plate 7, the rotating shaft 11 can still drive the sleeve 13 to drill. It should be noted that, since the two rotating shafts 11 rotate under the action of the same second dual-axis motor 10, the sleeves 13 on the two rotating shafts 11 will achieve the same amount of rotation; Both sleeves 13 are provided with first bevel gears 14 on their surfaces. Due to the cooperation between the shaft 11 and the sleeves 13, the first bevel gears 14 on both sides rotate synchronously and with the same amount of rotation. The adapter includes a screw 16 screwed onto the fixing frame 15. One end of the screw 16 is provided with a second bevel gear 17 that meshes with the first bevel gear 14. The two first bevel gears 14 rotate synchronously, thereby driving the two second bevel gears 17 and the screw 16 to rotate. A movable frame 18 is screwed onto the surface of the screw 16. A first abutment 19 that penetrates the fixed frame 15 is provided on the movable frame 18. Two second abutments 20 that both penetrate the fixed frame 15 are slidably provided on the movable frame 18. The first abutment 19 and the second abutment 20 are slidably attached to the fixed frame 15. The first abutment 19 and the second abutment 20 limit the movement of the movable frame 18, which can only move along the direction of the screw 16 when the screw 16 rotates. The movable frame 18 includes a horizontally arranged horizontal plate and an inclined plate on the horizontal plate. A rectangular through hole is provided on the inclined plate. The second abutment 20 slides in the rectangular through hole. Under the limitation of the rectangular through hole and the fixed frame 15, when the movable frame 18 moves, the second abutment 20 on both sides will move closer to or away from the same center at the same time. At the same time, the first abutment 19 will also move closer to or away from the same center at the same time as the movable frame 18 moves. The first abutment 19 extends through and into the recess of the fixing frame 15 at one end with an arc-shaped surface, and the second abutment 20 extends through and into the recess of the fixing frame 15 at one end with an arc-shaped surface. The arc-shaped surfaces allow the first abutment 19 and the second abutment 20 to better fit against the surface of the propulsion cylinder. The drive unit is used to drive the screw 16 to rotate via the second bevel gear 17; The screw 16 is used to drive the movable frame 18 connected to it to move by rotating, thereby driving the first abutment 19 and the second abutment 20 to move towards the same center, so as to adapt to oil cylinders of different sizes.

[0022] The fixing part is provided on the mounting plate 7 to fix the hydraulic cylinder; The fixing part includes four bolts 21, all of which are set on the same fixing frame 15. Each of the four bolts 21 has a pressure plate 22 sleeved on its surface and a nut 23 screwed onto its surface. The first abutment 19, the second abutment 20 and the pressure plate 22 are used to clamp the propulsion cylinder, while the nut 23 is used to limit and fix the pressure plate 22 after clamping.

[0023] A grab head bolt 24 is welded at the center point of steel plate 1; It should be noted that the grab head bolt 24 is a modification of the grab head bolt 24 of the tunnel segment, so it can be used in conjunction with the assembly machine.

[0024] Through the above structural settings: 1. In use, the first dual-axis motor 4 drives the lead screws 5 on both sides to rotate synchronously. Since the threads of the lead screws 5 on both sides are opposite, the mounting seats 6 that mesh with the lead screws 5 on both sides will move to the opposite side or away from the side, thereby adjusting the distance between the mounting seats 6 on both sides, thus realizing the propulsion cylinders with different distances. Through the extension and retraction of the hydraulic cylinder 8, under the connection of the connecting plate 9, the two mounting plates 7 on the same mounting seat 6 can be moved. Since both mounting plates 7 are equipped with cylinder fixing components, the distance between the two cylinder fixing components can be adjusted to accommodate propulsion cylinders of different lengths.

[0025] 2. In use, the second dual-shaft motor 10 operates, driving the two rotating shafts 11 on both sides to work. The sleeve 13, the first bevel gear 14, and the second bevel gear 17 drive the two screws 16 on the same side to rotate, further driving the two movable frames 18 on the same side to move synchronously. When the movable frame 18 moves, the first abutment block 19 and the second abutment block 20 move towards the same center. During the movement, they can come into contact with the surfaces of propulsion cylinders of different diameters, thus adapting to propulsion cylinders of different sizes. When the first abutment block 19 and the second abutment block 20 are in contact with the surface of the propulsion cylinder, the upper pressure plate 22 is installed and fixed by the nut 23. At this time, the propulsion cylinder is clamped, and then the propulsion cylinder can be transferred with the help of the assembly machine.

[0026] A method for disassembling and assembling the propulsion cylinder of a tunnel boring machine, the method is as follows: S1. The hydraulic cylinder disassembly and assembly device is moved to the front end by the shield machine's feeder, to the position that the assembly machine can grab. S2. The assembly machine grabs the lifting head bolt 24 of the hydraulic cylinder disassembly and assembly device. The two sets of hydraulic cylinder fixing components of the device are in the front-to-back direction. After the assembly machine grabs the head, the grabs clamp the head. After clamping, the nylon plate on the assembly machine gripping plate is close to the hydraulic cylinder disassembly and assembly device. S3. After the assembly machine grabs the hydraulic cylinder disassembly and assembly device, by controlling the assembly machine to move forward and backward, rotate left and right, tilt and flip, the hydraulic cylinder disassembly and assembly device is brought close to the hydraulic cylinder to be disassembled. S4. Use 100-type channel steel to weld U-shaped clips on the inner wall of the shield body. The size of the U-shaped clips is based on the size of a single set of hydraulic cylinders. Along the direction of extension and retraction of the propulsion hydraulic cylinder, weld two U-shaped clips from the propulsion hydraulic cylinder clamp to the last ring segment of the shield tail for temporary support when the hydraulic cylinder is pulled outward. S5. Install a 5T hand chain hoist along the direction of the cylinder to be removed at the last ring segment, with the hand chain hoist and the cylinder to be removed on the same line. S6. Tighten the 5T hoist at the rear and pull the cylinder outward to the first U-shaped clamp position. After checking the stability of the cylinder, continue to pull it outward to the second U-shaped clamp position. Then operate the assembly machine to move forward to the front end and extend and retract the red and blue cylinders to bring the cylinder disassembly and assembly device close to the push cylinder. S7. Before approaching the propulsion cylinder, remove the pressure plate 22 and nut 23. Then, adjust the cylinder disassembly and assembly device according to the specifications of the propulsion cylinder so that it can be adapted to the propulsion cylinder to be disassembled. Then, make the first abutment block 19 and the second abutment block 20 close to the propulsion cylinder and install the pressure plate 22 and nut 23. At this time, the first abutment block 19, the second abutment block 20 and the pressure plate 22 clamp the propulsion cylinder. S8. Control the assembly machine to move backward so that the push cylinder is completely disengaged. Adjust the red and blue cylinders and gripping plate of the assembly machine so that the push cylinder is disengaged from the front shield flange face. Rotate the assembly machine to turn the push cylinder to the bottom and loosen the pressure plate 22 and nut 23. S9. Use a feeder to move the propulsion cylinder to the bottom of the equipment bridge, and use a double beam hoist to lift the propulsion cylinder to the flatbed of the battery truck for transportation.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] Additionally, "multiple" refers to two or more.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shield tunneling machine (TBM) jacking ram disassembly device, characterized by: Includes steel plate (1), spacing adjustment assembly and hydraulic cylinder fixing assembly; The surface of the steel plate (1) is provided with a mounting frame (2), the mounting frame (2) is a U-shaped structure, and the spacing adjustment component is provided on the steel plate (1) and the mounting frame (2); The spacing adjustment assembly includes a lateral adjustment part and a longitudinal adjustment part. The lateral adjustment part is used to adjust the lateral spacing, and the longitudinal adjustment part is used to adjust the spacing between the two cylinder fixing assemblies on one side. The cylinder fixing assembly includes a drive unit, a fixing frame (15), an adapter unit and a fixing unit. The fixing frame (15) is disposed on the mounting plate (7) and the fixing unit is disposed on the mounting plate (7) to fix the cylinder. The adapter includes a screw (16) screwed onto a fixed frame (15), a second bevel gear (17) provided at one end of the screw (16), a movable frame (18) screwed onto the surface of the screw (16), a first abutment (19) penetrating the fixed frame (15) provided on the movable frame (18), and two second abutments (20) slidably provided on the movable frame (18) and both penetrating the fixed frame (15). The drive unit is used to drive the screw (16) to rotate through the second bevel gear (17). The screw (16) is used to drive the movable frame (18) connected to it to move by rotation, thereby driving the first abutment (19) and the second abutment (20) to move towards the same center, so as to adapt to oil cylinders of different sizes; The lateral adjustment part includes a horizontal shaft (3) and a first dual-axis motor (4). There are two horizontal shafts (3) and both are mounted on the mounting bracket (2). The first dual-axis motor (4) is mounted on the mounting bracket (2). Both output shafts of the first dual-axis motor (4) are connected to lead screws (5). The threads on the lead screws (5) on both sides are opposite in direction. The surfaces of the lead screws (5) on both sides are screwed with mounting seats (6) that slide on the surfaces of the two horizontal shafts (3). The first dual-axis motor (4) is used to drive the two lead screws (5) to rotate, thereby driving the mounting bases (6) that are screwed to the two lead screws (5) to move to the opposite side or the opposite side, so as to adjust the lateral spacing. The longitudinal adjustment part includes a mounting plate (7) and a hydraulic cylinder (8). There are two mounting plates (7) and they are both slidably disposed on the mounting base (6). There are two hydraulic cylinders (8) and they are both disposed on the surface of the mounting base (6). The output ends of the two hydraulic cylinders (8) are connected to connecting plates (9) that are respectively connected to the two mounting plates (7). The cylinder fixing assembly is disposed on the mounting plate (7). The hydraulic cylinder (8) is used to drive the connecting plate (9) and the mounting plate (7) to move, thereby realizing the adjustment of the distance between the two cylinder fixing components on one side; The drive unit includes a second dual-axis motor (10) mounted on the mounting base (6), and rotating shafts (11) are connected to the output shafts on both sides of the second dual-axis motor (10). The drive unit also includes two vertical plates (12) respectively installed on two mounting plates (7) on the same side. Each of the two vertical plates (12) has a sleeve (13) rotatably mounted on the surface of the rotating shaft (11). Each of the two sleeves (13) has a first bevel gear (14) meshing with the second bevel gear (17). The fixing part includes four bolts (21) that are all set on the same fixing frame (15). Each of the four bolts (21) has a pressure plate (22) sleeved on its surface and a nut (23) screwed onto its surface.

2. The shield machine propulsion cylinder disassembly and assembly device according to claim 1, characterized in that: The cross section of the shaft (11) is cross-shaped, and the opening on the sleeve (13) is cross-shaped, and the size of the opening is adapted to the cross section size of the shaft (11).

3. The shield machine propulsion cylinder disassembly and assembly device according to claim 1, characterized in that: The fixed frame (15) includes an arc-shaped plate in the middle and an L-shaped plate connected to both sides of the arc-shaped plate. The movable frame (18) includes a horizontal plate and an inclined plate on the horizontal plate, and a rectangular through hole is provided on the inclined plate.

4. The shield machine propulsion cylinder disassembly and assembly device according to claim 1, characterized in that: The first abutment (19) extends through and to one end of the recess of the fixing frame (15) and is an arc-shaped surface, and the second abutment (20) extends through and to one end of the recess of the fixing frame (15) and is an arc-shaped surface.

5. The shield machine propulsion cylinder disassembly and assembly device according to claim 1, characterized in that: A grab head bolt (24) is welded at the center point of the steel plate (1).

6. A method for disassembling and assembling the propulsion cylinder of a tunnel boring machine, characterized in that: The method of the shield machine propulsion cylinder disassembly and assembly device as described in any one of claims 1-5 is as follows: S1. The hydraulic cylinder disassembly and assembly device is moved to the front end by the shield machine's feeder, to the position that the assembly machine can grab. S2. The assembly machine grabs the lifting head bolt (24) of the hydraulic cylinder disassembly and assembly device. The two sets of hydraulic cylinder fixing components of the device are in the front and back direction. After the assembly machine grabs the head, the grabs the head is clamped. After clamping, the nylon plate on the assembly machine gripping plate is close to the hydraulic cylinder disassembly and assembly device. S3. After the assembly machine grabs the hydraulic cylinder disassembly and assembly device, by controlling the assembly machine to move forward and backward, rotate left and right, tilt and flip, the hydraulic cylinder disassembly and assembly device is brought close to the hydraulic cylinder to be disassembled. S4. Use 100-type channel steel to weld U-shaped clips on the inner wall of the shield body. The size of the U-shaped clips is based on the size of a single set of hydraulic cylinders. Along the direction of extension and retraction of the propulsion hydraulic cylinder, weld two U-shaped clips from the propulsion hydraulic cylinder clamp to the last ring segment of the shield tail for temporary support when the hydraulic cylinder is pulled outward. S5. Install a 5T hand chain hoist along the direction of the cylinder to be removed at the last ring segment, with the hand chain hoist and the cylinder to be removed on the same line. S6. Tighten the 5T hoist at the rear and pull the cylinder outward to the first U-shaped clamp position. After checking the stability of the cylinder, continue to pull it outward to the second U-shaped clamp position. Then operate the assembly machine to move forward to the front end and extend and retract the red and blue cylinders to bring the cylinder disassembly and assembly device close to the push cylinder. S7. Before approaching the propulsion cylinder, remove the pressure plate (22) and nut (23). Then, adjust the cylinder disassembly and assembly device according to the specifications of the propulsion cylinder so that it can be adapted to the propulsion cylinder to be disassembled. Then, make the first abutment block (19) and the second abutment block (20) close to the propulsion cylinder and install the pressure plate (22) and nut (23). At this time, the first abutment block (19), the second abutment block (20) and the pressure plate (22) clamp the propulsion cylinder. S8. Control the assembly machine to move backward so that the push cylinder is completely disengaged. Adjust the red and blue cylinders and gripping plate of the assembly machine so that the push cylinder is disengaged from the front shield flange. Rotate the assembly machine to turn the push cylinder to the bottom and loosen the pressure plate (22) and nut (23). S9. Use a feeder to move the propulsion cylinder to the bottom of the equipment bridge, and use a double beam hoist to lift the propulsion cylinder to the flatbed of the battery truck for transportation.

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