Large-torque disassembling device

Abstract

The invention discloses a large-torque disassembling device which comprises a quick-rotating disassembling mechanism, a floating cylinder, a floating spring, a hydraulic wrench and a sleeve. The floating cylinder and the floating spring are in floating connection and can be automatically centered; the floating spring is fixedly connected with the hydraulic wrench, and the sleeve is installed on an output shaft of the hydraulic wrench and keeps rotating synchronously. The quick-rotating disassembling mechanism is connected with an input shaft of the hydraulic wrench through a telescopic spline combination, and the output state of the quick-rotating disassembling mechanism and the output state of the hydraulic wrench are controlled through the spline combination connection state. The floating connection structure capable of conducting rapid centering is adopted, two driving modes of hydraulic driving and motor driving of the hydraulic wrench are achieved, automatic centering between the sleeve and the bolt is achieved, through floating cooperation operation of the floating cylinder and the floating spring, the cap recognizing difficulty when errors are large is greatly reduced, the cap recognizing errors are made up, and the machining efficiency is improved. And the positioning difficulty during automatic tightening and assembling operation is reduced.

Description

Technical Field

[0001] The present invention relates to a high-torque disassembly device, belonging to the technical field of automated disassembly. Background Art

[0002] In industrial fields such as wind power, heavy machinery, and bridge engineering, high-torque bolts (torque values often reaching thousands of Newton-meters) are key connection components, and the quality of their assembly and disassembly directly affects the operation safety and maintenance efficiency of equipment. However, traditional high-torque bolt disassembly operations face multiple technical bottlenecks: on the one hand, limited by the diverse bolt specifications, large quantities, and ultra-high pre-tightening force characteristics, manual operations require frequent replacement of compatible tools and rely on high-intensity physical output, which easily leads to slow operation rhythms and increased operator fatigue; on the other hand, the on-site environment is complex, and traditional tools such as handheld hydraulic wrenches are heavy and have low positioning accuracy, which not only increases the risk of falling but also easily causes thread damage or pre-tightening force deviation due to uneven manual force application, seriously affecting the consistency of disassembly quality. Although existing automated tightening devices can partially replace manual labor, their rigid structures are difficult to adapt to the spatial pose deviation of bolt groups and lack the ability to quickly switch between multiple specifications, making it difficult to meet the efficient disassembly requirements of high-density bolt groups. Therefore, developing an intelligent disassembly device with high-torque output, adaptive floating adjustment, multi-specification compatibility, and rapid position change capabilities has become a key technical direction for breaking through industry pain points and achieving efficient and high-quality maintenance operations. Summary of the Invention

[0003] To solve the problems in the above background art, the present invention provides a high-torque disassembly device.

[0004] The technical solution for achieving the object of the present invention is: a high-torque disassembly device, comprising a fast-rotation disassembly mechanism, a floating cylinder, a floating spring, a hydraulic wrench, and a socket;

[0005] The floating cylinder is floatingly connected to the floating spring and can automatically center the device;

[0006] The floating spring is fixedly connected to the hydraulic wrench, and the socket is installed on the output shaft of the hydraulic wrench and rotates synchronously;

[0007] The fast-rotation disassembly mechanism is connected to the input shaft of the hydraulic wrench through a telescopic spline combination, and the output states of the fast-rotation disassembly mechanism and the hydraulic wrench are controlled by the connection state of the spline combination.

[0008] In the above structure, the floating spring is fixedly connected to the hydraulic wrench, and quick centering can be performed between the floating cylinder and the floating spring. When there is an offset during the process of removing the bolt, position compensation can be effectively carried out to perform the quick cap recognition operation. After the hydraulic wrench completes the removal of the large torque part, the rotation of the quick disassembly mechanism can be transmitted to the hydraulic wrench through the spline connection, and the bolt can be quickly disassembled by the quick rotation disassembly mechanism. This structure greatly reduces the difficulty of cap recognition during the bolt removal process and reduces the positioning difficulty of the automatic tightening and assembly operation.

[0009] Further or optionally, the quick disassembly mechanism includes a motor, a reducer, and a cylinder. The motor drives the reducer to move, and drives the sleeve on the hydraulic wrench through a spline combination. The cylinder is arranged on the moving cylinder and controls the connection state of the spline combination.

[0010] Using a combination of a motor and a reducer for driving, compared with other adjustment methods, its steering is more flexible; using a cylinder to control the connection state of the spline combination has a larger adjustment surface when controlling the floating state between the floating cylinder and the floating spring, and can make the cooperation between the floating cylinder and the floating spring more stable.

[0011] Further or optionally, the quick disassembly mechanism further includes a reducer mounting plate, a spacer plate, a cylinder connecting plate, a spline baffle, a spline sleeve, a spline shaft, a spring, and a cylinder mounting plate;

[0012] The motor and the reducer are fixedly connected between them. The reducer is mounted on the reducer mounting plate, and the spacer plate is arranged between the reducer mounting plate and the cylinder mounting plate; the cylinder is parallel to the spacer plate and fixed on the cylinder mounting plate. The output shaft of the cylinder is slidably connected to the cylinder mounting plate, and a cylinder connecting plate is arranged at the output end of the cylinder. The cylinder connecting plate is fixedly connected to the spline baffle;

[0013] The spline sleeve is fixedly connected to the reducer. The spline sleeve and the spline shaft are connected by splines and a spring for resetting is arranged at one end. The spline baffle is provided with a through hole, and the spline shaft passes through the through hole of the spline baffle and is slidably connected to the spline baffle;

[0014] The input shaft of the hydraulic wrench has external splines, and the internal splines of the spline shaft cooperate with the input shaft of the hydraulic wrench.

[0015] In the above structure, when it is necessary to drive the hydraulic wrench by the electric drive device, the cylinder extends, the spline baffle moves toward the hydraulic wrench side under the drive of the cylinder, and the spline shaft in the spline sleeve extends toward the hydraulic wrench side under the action of the spring. The input shaft end of the hydraulic wrench is provided with internal splines, and the external splines on the side wall of the spline shaft cooperate with the internal splines of the hydraulic wrench. At this time, the motor, the reducer, and the hydraulic wrench are connected together by splines, and starting the motor can drive the hydraulic wrench.

[0016] Further or optionally, in order to achieve automatic offset compensation, a floating centering structure is provided, specifically a floating cylinder and moving spring matching structure.

[0017] The floating cylinder includes a cover plate, a piston, a support cylinder, a fixed seat and a fixed flange. An air pipe joint is provided on the cover plate, and the cover plate is fixedly connected to the support cylinder;

[0018] The piston is attached to the cover plate and slides along the inner wall of the support cylinder. The fixed seat is fixed on the side of the support cylinder away from the piston and fixed on the fixed flange; a groove is provided on the fixed seat, and the floating spring is arranged between the piston and the fixed seat. A positioning device matching the groove is provided on the floating spring.

[0019] After the device is powered on and ventilated, when the sleeve is placed above the bolt and the sleeve is pressed down, if there is an error between the sleeve and the bolt center, floating will occur between the floating cylinder and the floating spring, and relative sliding will occur between the floating spring and the groove of the floating cylinder. When the sliding reaches the end point, the compensation is completed, and the sleeve and the bolt center are accurately centered.

[0020] Further or optionally, in order to ensure the accuracy of the above sliding centering process, the floating spring includes a connecting sleeve, a positioning shaft and a ball sleeve. The positioning shaft is vertically fixed on the outside of the connecting sleeve, and the ball sleeve is fixed at one end of the positioning shaft away from the connecting sleeve. The positioning device is a combination of the positioning shaft and c; the connecting sleeve is fixedly connected to the cylinder mounting plate.

[0021] The surface of the ball sleeve in the above structure is smooth. It can slide in the groove of the floating cylinder and can also rotate around the positioning shaft, which can reduce disturbances during the centering process, thereby reducing the collision between the sleeve and the bolt. In this way, it can not only ensure effective compensation of the floating disassembly mechanism in all directions, but also limit the ball sleeve in the groove to prevent it from offsetting infinitely, ensuring the safe operation of the device.

[0022] Further or optionally, in order to achieve diversification of spline specifications and adapt to the disassembly requirements of different bolt specifications, the spline sleeve is connected to the reducer through a keyway.

[0023] Further or optionally, in order to improve the stability of the piston and avoid air leakage faults during operation, O-ring seals are installed between the cover plate, the piston and the support cylinder.

[0024] Further or optionally, the groove of the fixed seat is a V-shaped groove, and the number and position of the positioning devices are the same as those of the V-shaped groove.

[0025] Further or optionally, in order to protect the safety of the disassembly device and offset the huge tightening reaction force generated during tightening, a reaction arm is also provided in the above device. The reaction arm is detachably connected to one side of the hydraulic wrench and is in the same plane as the bolt contact surface of the sleeve, and the reaction arm can be adjusted in height.

[0026] Further or optionally, in order to improve the spring bearing capacity, the spring is set as a rectangular spring.

[0027] Adopting the above technical solution, the present invention has the following beneficial effects:

[0028] (1) The large-torque disassembling device of the present invention adopts a floating connection structure that can perform rapid centering, realizing two driving modes of hydraulic drive and motor drive of the hydraulic wrench, achieving automatic centering between the sleeve and the bolt. Through the floating cooperation of the floating cylinder and the floating spring, the difficulty of recognizing the cap when the error is large is greatly reduced, compensating for the cap recognition error and reducing the positioning difficulty during the automatic tightening and assembling operation.

[0029] (2) The quick-disassembly mechanism of the present invention adopts a combination of a motor and a reducer, and the connection state between the floating cylinder and the floating spring is controlled by a cylinder. Compared with other structures, the connection between the two is more stable.

[0030] (3) The large-torque disassembling device of the present invention adopts a cylinder to drive the spline baffle to control the connection state of the spline combination, and cooperates with the spring arranged in the spline cylinder to control the connection relationship between the spline shaft and the hydraulic wrench drive shaft. The switching process is very flexible and has high sensitivity.

[0031] (4) The large-torque disassembling device of the present invention adopts the cooperation of a floating cylinder and a moving spring for automatic centering. The piston in the floating cylinder adopts a pneumatic structure, and the floating spring and the floating cylinder are matched and positioned by a groove and a positioning device. Compensation positioning is carried out through the sliding of the positioning device in the groove, which can achieve accurate plane calibration and has a large acceptance of the deviation between the sleeve and the bolt.

[0032] (5) The floating spring of the large-torque disassembling device of the present invention is provided with a positioning shaft and a ball sleeve, which can reduce disturbance during the centering process, thereby reducing the collision between the sleeve and the bolt.

[0033] (6) The spline sleeve of the large-torque disassembling device of the present invention is connected to the reducer through a key groove, which can effectively adapt to different bolt specifications.

[0034] (7) O-ring seals are installed between the cover plate, the piston and the support cylinder of the large-torque disassembling device of the present invention, which can avoid air leakage of the piston and the equipment has higher operating stability.

[0035] (8) The large-torque disassembling device of the present invention adopts a V-shaped groove as the fixed seat groove, which can ensure the ball sleeve moves in a fixed direction during the centering process and has high centering accuracy.

[0036] (9) A large-torque disassembly device of the present application is also provided with a reaction arm, which can protect the safety of the disassembly device and offset the huge tightening reaction force generated during tightening.

[0037] (10) A rectangular spring is adopted between the spline sleeve and the spline shaft of a large-torque disassembly device of the present invention, and its structural bearing capacity is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments in conjunction with the accompanying drawings, where

[0039] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 is a schematic diagram of the structure of the quick-rotation switching disassembly mechanism of the present invention;

[0041] Figure 3 is a schematic diagram of the floating spring structure of the present invention;

[0042] Figure 4 is a schematic diagram of the floating cylinder structure of the present invention;

[0043] Figure 5 is a schematic diagram of the cross-sectional structure of the floating cylinder of the present invention;

[0044] Figure 6 is a schematic diagram of the assembly relationship of the speed reducer, the speed reducer mounting plate and the spline baffle of the present invention.

[0045] The reference numerals in the drawings are:

[0046] Quick-rotation disassembly mechanism 1, motor 11, speed reducer 12, speed reducer mounting plate 14, shim plate 15, cylinder 13, cylinder connection plate 16, spline baffle 17, spline sleeve 18, spline shaft 19, spring 120, cylinder mounting plate 121;

[0047] Floating cylinder 2, cover plate 21, piston 22, support cylinder 23, fixed seat 24, groove 241, fixed flange 25, O-ring 26;

[0048] Floating spring 3, connection sleeve 31, positioning shaft 32, ball sleeve 33;

[0049] Hydraulic wrench 4, socket 5, reaction arm 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] In order to better understand the above technical solutions, the following will detail the above technical solutions in conjunction with the specification drawings and specific embodiments.

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0054] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships in which the inventive product is usually placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0055] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly and should not be used to limit the protection scope of the present invention.

[0056] (Embodiment 1)

[0057] See Figures 1 to 6 A large-torque disassembly device includes a fast-rotation disassembly mechanism 1, a floating cylinder 2, a floating spring 3, a hydraulic wrench 4, and a socket 5;

[0058] The floating cylinder 2 is floatingly connected to the floating spring 3 and is equipped with an automatic centering device;

[0059] The floating spring 3 is fixedly connected to the hydraulic wrench 4, and the sleeve 5 is installed on the output shaft of the hydraulic wrench 4 and rotates synchronously;

[0060] The quick-rotation disassembly mechanism 1 is connected to the input shaft of the hydraulic wrench 4 through a telescopic spline combination, and the output states of the quick-rotation disassembly mechanism 1 and the hydraulic wrench 4 are controlled by the connection state of the spline combination.

[0061] During use, the equipment is powered on and ventilated. The sleeve 5 is placed above the bolt and pressed down. There will be an offset between the sleeve 5 and the center line of the bolt. During the pressing process, there is floating between the floating cylinder 2 and the floating spring 3. The sleeve 5 is driven by the floating spring 3 to rotate. After centering is completed, the hydraulic wrench 4 is started at this time, and the large-torque part of the bolt is turned; during the turning process, the spline is connected, and the connection state between the quick-rotation disassembly mechanism 1 and the hydraulic wrench 4 is achieved, realizing the switching between hydraulic drive and motor drive.

[0062] After the above-mentioned cap recognition is completed, the spline of the quick-rotation disassembly mechanism 1 retracts, and the hydraulic wrench 4 can move independently. At this time, the hydraulic wrench 4 is started to work and enters the large-torque disassembly mode; when the large-torque disassembly part is completed, the quick-rotation disassembly mechanism 1 extends, and the spline combination between the quick-rotation disassembly mechanism 1 and the hydraulic wrench 4 is completed. The quick-rotation disassembly mechanism 1 is started to drive the hydraulic wrench 4 to rotate at high speed, entering the small-torque and quick-disassembly mode.

[0063] The quick-disassembly mechanism 1 includes a motor 11, a reducer 12, a reducer mounting plate 14, a spacer plate 15, a cylinder 13, a cylinder connecting plate 16, a spline baffle 17, a spline sleeve 18, a spline shaft 19, a spring 120, and a cylinder mounting plate 121;

[0064] The motor 11 is fixedly connected to the reducer 12. The reducer 12 is installed on the reducer mounting plate 14. The spacer plate 15 is arranged between the reducer mounting plate 14 and the cylinder mounting plate 121; the cylinder 13 is parallel to the spacer plate 15 and fixed on the cylinder mounting plate 121. The output shaft of the cylinder 13 is slidably connected to the cylinder mounting plate 121. A cylinder connecting plate 16 is arranged at the output end of the cylinder 13, and the cylinder connecting plate 16 is fixedly connected to the spline baffle 17;

[0065] The spline sleeve 18 is fixedly connected to the reducer 12. The spline sleeve 18 is connected to the spline shaft 19 through a spline and is provided with a spring 120 for reset at one end. The spline baffle 17 is provided with a through hole, and the spline shaft 19 passes through the through hole of the spline baffle 17 and is slidably connected to the spline baffle 17;

[0066] The input shaft of the hydraulic wrench 4 has external splines, and the internal splines of the spline shaft 19 are engaged with the input shaft of the hydraulic wrench 4.

[0067] In order to achieve automatic offset compensation, a floating centering structure is provided, specifically a floating cylinder and moving spring cooperation structure.

[0068] The floating cylinder 2 includes a cover plate 21, a piston 22, a support cylinder 23, a fixed seat 24 and a fixed flange 25. An air pipe joint is provided on the cover plate 21, and the cover plate 21 is fixedly connected to the support cylinder 23;

[0069] The piston 22 is arranged in contact with the cover plate 21 and slides along the inner wall of the support cylinder 23. The fixed seat 24 is fixed on the side of the support cylinder 23 away from the piston 22 and is fixed on the fixed flange 25; a groove 241 is provided on the fixed seat 24, and the floating spring 3 is arranged between the piston 22 and the fixed seat 24. A positioning device matching the groove 241 is provided on the floating spring 3.

[0070] The floating spring 3 includes a connecting sleeve 31, a positioning shaft 32 and a ball sleeve 33. The positioning shaft 32 is vertically fixed on the outside of the connecting sleeve 31, and the ball sleeve 33 is fixed at one end of the positioning shaft 32 away from the connecting sleeve 31. The positioning device is a combination of the positioning shaft 32 and the ball sleeve 33; the connecting sleeve 31 is fixedly connected to the cylinder mounting plate 21.

[0071] The groove 241 of the fixed seat 24 is a V-shaped groove, and the number and position of the positioning devices are the same as those of the V-shaped groove.

[0072] In the above structure, 6 V-shaped grooves are provided and evenly distributed along the circumference of the support cylinder 23. During the working process, the piston 22 moves towards the hydraulic wrench 4 under the action of air pressure, and the ball sleeve 33 contacts the piston 22. Due to the outer-high and inner-low inclined structure of the V-shaped groove, under the pressure of the piston 22, the ball sleeve 33 at the higher position in the floating spring 3 is preferentially pressed down and moves downward. When the six ball sleeves 33 are at the same height, the force is completely uniform. At this time, the floating spring 3 stops moving, and the center between the floating spring 3 and the floating cylinder 2 completely coincides, completing the centering operation and the cap recognition is completed.

[0073] After the cap recognition operation is completed, the cylinder 13 retracts. At this time, the hydraulic wrench 4 is started to complete the large-torque disassembly part.

[0074] After the preliminary disassembly is completed, the cylinder 13 extends, driving the spline baffle 17 to move towards the hydraulic wrench 4. Under the action of the spring 20, the spline shaft 19 synchronously extends towards the hydraulic wrench 4. At this time, the internal splines of the spline shaft are engaged with the external splines of the hydraulic wrench 4, and then the motor 11 is started to perform a high-speed disassembly action. After the disassembly is completed, the motor 11 stops moving, completing one cycle of the disassembly action.

[0075] To ensure a more stable connection, the motor 11 and the reducer 12 are connected by threads.

[0076] To achieve diversification of spline specifications and meet the removal requirements of different bolt specifications, the spline sleeve 18 and the reducer 12 are connected by key grooves.

[0077] To improve the stability of the piston and avoid air leakage faults during operation, O-ring seals 26 are installed between the cover plate 21, the piston 22 and the support cylinder 23.

[0078] To protect the safety of the disassembling device and counteract the huge tightening reaction force generated during tightening, a reaction arm 6 is further provided in the above device. The reaction arm 6 is detachably connected to one side of the hydraulic wrench 4 and is in the same plane as the bolt contact surface of the sleeve 5. The reaction arm 6 can be adjusted in height.

[0079] To improve the bearing capacity of the spring, the spring 120 is set as a rectangular spring.

[0080] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high torque dismantling device, characterized in that: It comprises a quick-rotation disassembly mechanism (1), a floating cylinder (2), a floating spring (3), a hydraulic wrench (4) and a sleeve (5); The floating cylinder (2) and the floating spring (3) are connected in a floating manner and can be automatically centered; The floating spring (3) is fixedly connected to the hydraulic wrench (4), and the sleeve (5) is installed on the output shaft of the hydraulic wrench (4) and keeps rotating synchronously; The quick-rotation disassembly mechanism (1) and the input shaft of the hydraulic wrench (4) are connected via a retractable spline combination, and the output state of the quick-rotation disassembly mechanism (1) and the hydraulic wrench (4) is controlled by the spline combination connection state.

2. A high torque dismantling device according to claim 1, characterized in that: The quick disassembly mechanism (1) comprises a motor (11), a reducer (12), and a cylinder (13); the motor (11) drives the reducer (12) to move, and drives the sleeve (5) on the hydraulic wrench (4) to move via a spline combination; the cylinder (13) is arranged on the moving cylinder (2) and controls the connection state of the spline combination.

3. A high torque dismantling device according to claim 2, characterized in that: The quick disassembly mechanism (1) also includes a reducer mounting plate (14), a padding plate (15), a cylinder connecting plate (16), a spline baffle (17), a spline sleeve (18), a spline shaft (19), a spring (120), and a cylinder mounting plate (121); The motor (11) and the reducer (12) are fixedly connected, the reducer (12) is mounted on a reducer mounting plate (14), and a padding plate (15) is arranged between the reducer mounting plate (14) and the cylinder mounting plate (21); the cylinder (13) is parallel to the padding plate (15) and is fixed on the cylinder mounting plate (21), the output shaft of the cylinder (13) is slidably connected to the cylinder mounting plate (21), and a cylinder connecting plate (16) is arranged at the output end of the cylinder (13), and the cylinder connecting plate (16) is fixedly connected to a spline baffle (17); The spline sleeve (18) is fixedly connected to the reducer (12); the spline sleeve (18) is connected to the spline shaft (19) via a spline and a spring (120) for resetting is arranged at one end; the spline baffle (17) is provided with a through hole; the spline shaft (19) passes through the through hole of the spline baffle (17) and is slidably connected to the spline baffle (17); The input shaft of the hydraulic wrench (4) is provided with an external spline, and the internal spline of the spline shaft (19) matches the input shaft of the hydraulic wrench (4).

4. A high torque dismantling device according to claim 3, characterized in that: The floating cylinder (2) comprises a cover plate (21), a piston (22), a support cylinder (23), a fixing seat (24) and a fixing flange (25); a gas pipe joint is arranged on the cover plate (21); the cover plate (21) is fixedly connected to the support cylinder (23); The piston (22) is arranged in contact with the cover plate (21) and slides along the inner wall of the support tube (23); the fixed seat (24) is fixed on the side of the support tube (23) away from the piston (22) and fixed on the fixed flange (25); a groove (241) is arranged on the fixed seat (24); the floating spring (3) is arranged between the piston (22) and the fixed seat (24); and a positioning device matching the groove (241) is arranged on the floating spring (3).

5. A high torque dismantling device according to claim 3, characterized in that: The floating spring (3) comprises a connecting sleeve (31), a positioning shaft (32) and a ball sleeve (33); the positioning shaft (32) is vertically fixed on the outside of the connecting sleeve (31); the ball sleeve (33) is fixed on the end of the positioning shaft (32) away from the connecting sleeve (31); the positioning device is a combination of the positioning shaft (32) and the ball sleeve (33); the connecting sleeve (31) is fixedly connected to the cylinder mounting plate (21).

6. A high torque dismantling device according to claim 3, characterized in that: The spline sleeve (18) is connected to the reducer (12) via a keyway.

7. A high torque dismantling device according to claim 4, characterized in that: O-type sealing rings (26) are installed between the cover plate (21), the piston (22) and the support cylinder (23).

8. A high torque dismantling device according to claim 4, characterized in that: The groove (241) of the fixing seat (24) is a V-shaped groove, and the number and position of the positioning devices are consistent with the V-shaped groove.

9. A high torque dismantling device according to claim 1, characterized in that: A reaction arm (6) is also provided. The reaction arm (6) is detachably connected to one side of the hydraulic wrench (4) and is located in the same plane as the bolt contact surface of the sleeve (5). The reaction arm (6) can be adjusted in height.

10. A high torque dismantling device according to claim 3, characterized in that: The spring (120) is a rectangular spring.

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