Unidirectional unscrewing hydraulic oil cylinder cover dismounting device

Abstract

The invention relates to the technical field of hydraulic manufacturing equipment, in particular to a one-way unscrewing hydraulic oil cylinder cover dismounting device which comprises a machine tool, a hydraulic motor is fixedly installed at the top of the machine tool, a ratchet wheel assembly is arranged at the output end of the hydraulic motor, and driving devices are fixedly installed on the two sides of the ratchet wheel assembly. One side of the ratchet wheel assembly is fixedly connected with a telescopic bed head used for clamping the hydraulic oil cylinder cover, and an adjusting mechanism is arranged at the bottom of the fixing piece and connected with the telescopic bed head and the driving device. When the types of oil cylinders to be disassembled are different, the telescopic bed head is changed to adapt to different oil cylinders under the cooperation of the adjusting mechanism in the clamping process in the fixing piece, and meanwhile, the driving force of the driving device is changed in the adjusting mechanism, so that the initial unscrewing torsion of the oil cylinder cover is changed; therefore, preliminary unscrewing with different torques can be carried out according to hydraulic oil cylinders with different sizes, and damage to the oil cylinder cover and the oil cylinder during disassembly caused by large torques is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic manufacturing equipment, and in particular to a one-way loosening and disassembling device for a hydraulic oil cylinder cover. Background Art

[0002] In the process of loosening the threads of the front cover of a ship's hydraulic cylinder, the use of impact working methods can easily cause the threads to be bitten and damaged. The result of thread damage is that the entire cylinder has to be processed on a machine tool, the original front cover has to be removed, and new materials have to be prepared to make another cylinder front cover, resulting in loss of repair cycle and unnecessary loss of materials and processing labor. Hydraulic cylinder dismantling equipment is required for loosening.

[0003] In the prior art, for example, the patent with publication number CN102294584B discloses a large-diameter column cylinder dismantling machine, which includes a bed, a power bed head, and a tailstock. The power bed head is connected to a driving device through a ratchet assembly, the ratchet assembly is provided with a force jack, a clamping cylinder and a manual clamping device are provided on the tailstock, a plurality of fixed seats are provided on the bed, and a tailstock jack is provided between the tailstock and the fixed seats.

[0004] The above structure utilizes a ratchet assembly for the initial loosening work, but due to different sizes of hydraulic cylinders, different initial loosening torques are required when removing the cylinder cover, which can easily damage the cylinder cover, and it is impossible to perform initial loosening with different torques according to different sizes of hydraulic cylinders. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a one-way loosening hydraulic cylinder cover disassembly device to solve the problem that different sizes of hydraulic cylinders require different initial loosening torques when disassembling the cylinder cover, which easily damages the cylinder cover and makes it impossible to perform initial loosening with different torques according to different sizes of hydraulic cylinders.

[0006] Based on the above purpose, the present invention provides a one-way loosening hydraulic cylinder cover disassembly device, comprising a machine tool, a hydraulic motor is fixedly installed on the top of the machine tool, a movable guide rail is fixedly installed on the bottom of the hydraulic motor on the machine tool, and a fixing piece for clamping the hydraulic cylinder is slidably arranged on the movable guide rail; The output end of the hydraulic motor is provided with a ratchet assembly, and driving devices are fixedly installed on both sides of the ratchet assembly, the driving device is used to drive the ratchet assembly to swing, and one side of the ratchet assembly is fixedly connected with a telescopic bed head for clamping the hydraulic cylinder cover; An adjustment mechanism is provided at the bottom of the fixing member, the adjustment mechanism is connected to the telescopic bed head and the driving device, and the adjustment mechanism is used to adjust the radius of the telescopic bed head and the force of the driving device; The ratchet assembly includes an output shaft fixedly mounted on the output end of the hydraulic motor, a gear fixedly mounted on the outside of the output shaft, and a sleeve plate is sleeved on the outside of the output shaft through a rolling bearing, two groups of shells are sleeved on the outside of the sleeve plate, a sleeve ring is fixedly mounted on the inner wall of the shell, two groups of claws are rotatably mounted on one side of the sleeve plate, two groups of adjacent claws are meshed with the gear, the other end of the claw is fixedly connected to a spring, the other end of the spring is connected to the sleeve plate, and a pad corresponding to the claw is fixedly mounted on the inner side of the sleeve ring.

[0007] Preferably, a wedge is fixedly mounted on the inner wall of the collar, and an arc groove corresponding to the wedge is formed inside the sleeve plate.

[0008] Preferably, two adjacent groups of the shells are connected by bolts, the bolts are distributed in a ring array, and the inner side of the cushion block is formed into an arc surface corresponding to the claw.

[0009] Preferably, the driving device includes a connecting piston movably connected to the outer shell, a hydraulic cylinder is fixedly installed on the bottom end of the connecting piston, and a movable sleeve is slidably installed on the outside, the hydraulic cylinder is arranged on the bottom wall of the movable sleeve, an air outlet is opened on the top of the movable sleeve, and an electromagnetic valve is arranged inside the air outlet.

[0010] Preferably, the diameter of the outer bottom end of the connecting piston is the same as the inner diameter of the movable sleeve, and the driving device is arranged in an eight-shaped shape based on the center of the outer shell.

[0011] Preferably, the fixing part comprises a base plate movably mounted on the machine tool, frames are fixedly mounted on both sides of the top of the base plate, a cylinder is arranged inside the frame, a V-shaped table is fixedly mounted on the output end of the cylinder, and the V-shaped table is slidably mounted in the frame.

[0012] Preferably, the telescopic bed head comprises an electric telescopic frame fixedly mounted on the end of the output shaft, and a stop rod is fixedly mounted on the outside of the electric telescopic frame, and the stop rod is used to clamp the hydraulic cylinder cover.

[0013] Preferably, the adjustment mechanism includes a rack plate fixedly mounted on the bottom of two groups of V-shaped tables, one side of the rack plate is meshed with a toothed disc, the toothed disc is rotatably mounted in the machine tool, the end of the rack plate is sleeved with a slide cylinder, a variable resistor is arranged inside the slide cylinder, a metal block corresponding to the variable resistor is arranged inside the rack plate, and the metal block is electrically connected to the electric telescopic frame.

[0014] Preferably, one end of the two groups of rack plates are movably connected with a connecting rod, and one end of the two adjacent groups of connecting rods are movably connected with a rotating rod, an elliptical disk is fixedly installed at the center of the rotating rod, the elliptical disk is rotatably installed inside the machine tool, and the bottom end of the elliptical disk is in contact with a telescopic rod, a displacement sensor is arranged on the outside of the telescopic rod, and the displacement sensor is electrically connected to the solenoid valve.

[0015] Beneficial effects of the present invention: The oil cylinder to be dismantled is placed in the fixing part, the oil cylinder is clamped, and the ratchet assembly is driven to swing by the driving device. The hydraulic cylinder in the driving device drives the connecting piston inside the movable sleeve, thereby driving the ratchet assembly to swing. During the swinging process, the oil cylinder cover is initially loosened with a large torque. After loosening, the outer shell is swung forward again, the claws are separated from the gears, and the telescopic bed head at the end of the output shaft is driven by the hydraulic motor to be loosened at a uniform speed. When the models of the cylinders to be disassembled are different, during the clamping process in the fixing parts, the telescopic headstock is changed to adapt to different cylinders in cooperation with the adjusting mechanism. At the same time, the driving force of the driving device is changed in the adjusting mechanism to change the torque for the initial loosening of the cylinder cover. This allows the initial loosening to be performed with different torques according to hydraulic cylinders of different sizes, avoiding damage to the cylinder cover and the cylinder due to large torque during disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the machine tool of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A; Figure 4 It is a side structural schematic diagram of the ratchet assembly of the present invention; Figure 5 It is a schematic diagram of the exploded structure of the ratchet assembly of the present invention.

[0018] The markings in the figure are: 1. machine tool; 2. hydraulic motor; 3. ratchet assembly; 31. output shaft; 32. housing; 33. collar; 331. wedge block; 332. arc groove; 34. bolt; 35. claw; 36. spring; 37. pad; 38. sleeve; 39. gear; 4. driving device; 41. connecting piston; 42. movable sleeve; 43. hydraulic cylinder; 44. air outlet; 45. solenoid valve; 5. adjusting mechanism; 51. rack plate; 52. gear plate; 53. slide; 54. connecting rod; 55. rotating rod; 56. elliptical disk; 57. telescopic rod; 58. displacement sensor; 59. variable resistor; 591. metal block; 6. telescopic head; 61. electric telescopic frame; 62. stop rod; 7. fixing part; 71. bottom plate; 72. frame; 73. cylinder; 74. V-shaped table; 8. moving guide rail. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a one-way loosening hydraulic cylinder cover disassembly device comprises a machine tool 1, a hydraulic motor 2 is fixedly installed on the top of the machine tool 1, a movable guide rail 8 is fixedly installed on the bottom of the hydraulic motor 2 on the machine tool 1, and a fixing member 7 for clamping the hydraulic cylinder is slidably arranged on the movable guide rail 8; The output end of the hydraulic motor 2 is provided with a ratchet assembly 3, and driving devices 4 are fixedly installed on both sides of the ratchet assembly 3. The driving device 4 is used to drive the ratchet assembly 3 to swing, and one side of the ratchet assembly 3 is fixedly connected with a telescopic bed head 6 for clamping the hydraulic cylinder cover; An adjusting mechanism 5 is provided at the bottom of the fixing member 7, and the adjusting mechanism 5 is connected to the telescopic bed head 6 and the driving device 4, and the adjusting mechanism 5 is used to adjust the radius of the telescopic bed head 6 and the force of the driving device 4; The ratchet assembly 3 includes an output shaft 31 fixedly mounted on the output end of the hydraulic motor 2, a gear 39 fixedly mounted on the outside of the output shaft 31, and a sleeve plate 38 is sleeved on the outside of the output shaft 31 through a rolling bearing, two groups of shells 32 are sleeved on the outside of the sleeve plate 38, a sleeve ring 33 is fixedly mounted on the inner wall of the shell 32, two groups of claws 35 are rotatably mounted on one side of the sleeve plate 38, two groups of adjacent claws 35 are meshed with the gear 39, the other end of the claw 35 is fixedly connected to a spring 36, the other end of the spring 36 is connected to the sleeve plate 38, and a pad 37 corresponding to the claw 35 is fixedly mounted on the inner side of the sleeve ring 33.

[0021] In this embodiment, the oil cylinder to be disassembled is placed in the fixing member 7, the oil cylinder is clamped, and then the fixing member 7 is driven by the movable guide rail 8 to move toward the telescopic bed head 6 until the telescopic bed head 6 contacts the oil cylinder cover of the oil cylinder to be disassembled, and the ratchet assembly 3 is driven to swing by the driving device 4, and the hydraulic cylinder 43 in the driving device 4 drives the connecting piston 41 inside the movable sleeve 42, thereby driving the ratchet assembly 3 to swing, and in the swinging process, the oil cylinder cover is initially loosened with a large torque, and after loosening, the housing 32 is swung forward again, the claw 35 is separated from the gear 39, and the telescopic bed head 6 at the end of the output shaft 31 is driven by the hydraulic motor 2 to be uniformly loosened; When the models of the cylinders to be disassembled are different, during the clamping process in the fixing part 7, in cooperation with the adjusting mechanism 5, the telescopic bed head 6 is changed to adapt to different cylinders. At the same time, the driving force of the driving device 4 is changed in the adjusting mechanism 5, so that the torque for the initial loosening of the cylinder cover changes, so that different torques can be used for initial loosening according to hydraulic cylinders of different sizes, avoiding damage to the cylinder cover and the cylinder due to large torque during disassembly.

[0022] As an implementation method, Figure 1 , Figure 2 , Figure 3 As shown, a wedge block 331 is fixedly mounted on the inner wall of the collar 33 , and an arc groove 332 corresponding to the wedge block 331 is formed inside the sleeve plate 38 .

[0023] Two adjacent groups of housings 32 are connected by bolts 34 , and the bolts 34 are distributed in a ring array. The inner side of the cushion block 37 is formed into an arc surface corresponding to the claw 35 .

[0024] In this embodiment, when the ratchet assembly 3 swings internally, the wedge block 331 cooperates with the arc groove 332, so that when the ratchet assembly 3 swings, the accuracy of loosening the cylinder cover can be improved, and the gear 39 and the claw 35 can be prevented from slipping. At the same time, the arc surface of the pad 37 makes the claw 35 fit.

[0025] As an implementation method, Figure 1 , Figure 4 , Figure 5 As shown, the driving device 4 includes a connecting piston 41 movably connected to the housing 32, a hydraulic cylinder 43 is fixedly installed on the bottom end of the connecting piston 41, and a movable sleeve 42 is slidably installed on the outside of the connecting piston 41, the hydraulic cylinder 43 is arranged on the bottom wall of the movable sleeve 42, an air outlet 44 is opened on the top of the movable sleeve 42, and an electromagnetic valve 45 is arranged inside the air outlet 44.

[0026] The diameter of the outer bottom end of the connecting piston 41 is the same as the inner diameter of the movable sleeve 42 , and the driving device 4 is arranged in an eight-shaped shape with the center of the outer shell 32 as the standard.

[0027] In this embodiment, after the telescopic bed head 6 contacts the cylinder cover of the oil cylinder to be removed, the ratchet assembly 3 is driven to swing by the driving device 4. The hydraulic cylinder 43 in the driving device 4 drives the connecting piston 41 inside the movable sleeve 42, thereby driving the housing 32 to swing left and right outside the output shaft 31. Among them, under pressure, the larger the air outlet 44 is, the smaller the resistance to the upward movement of the connecting piston 41 is, and the smaller the air outlet 44 is, the greater the resistance to the upward movement of the connecting piston 41 is.

[0028] As an implementation method, Figure 1 , Figure 2 As shown, the fixing member 7 includes a base plate 71 movably mounted on the machine tool 1, frames 72 are fixedly mounted on both sides of the top of the base plate 71, a cylinder 73 is arranged inside the frame 72, a V-shaped table 74 is fixedly mounted on the output end of the cylinder 73, and the V-shaped table 74 is slidably mounted in the frame 72.

[0029] The telescopic bed head 6 comprises an electric telescopic frame 61 fixedly mounted on the end of the output shaft 31 , and a stop rod 62 is fixedly mounted on the outside of the electric telescopic frame 61 , and the stop rod 62 is used to clamp the hydraulic cylinder cover.

[0030] In this embodiment, the cylinder to be dismantled is placed in the fixing part 7, and the internal cylinder 73 drives the V-shaped table 74 to move toward the middle at the same time. The V-shaped table 74 can adapt to hydraulic cylinders of different radii, and then clamps the cylinder. The fixing part 7 is then driven by the movable guide rail 8 to move toward the telescopic bed head 6 until the telescopic bed head 6 contacts the cylinder cover of the cylinder to be dismantled.

[0031] As an implementation method, Figure 1 , Figure 2 , Figure 3 As shown, the adjustment mechanism 5 includes a rack plate 51 fixedly mounted on the bottom of two groups of V-shaped tables 74, a toothed disc 52 is meshed on one side of the rack plate 51, and the toothed disc 52 is rotatably mounted in the machine tool 1. A slide 53 is sleeved on the end of the rack plate 51, and a variable resistor 59 is arranged inside the slide 53. A metal block 591 corresponding to the variable resistor 59 is arranged inside the rack plate 51, and the metal block 591 is electrically connected to the electric telescopic frame 61.

[0032] In this embodiment, when the models of the cylinders to be disassembled are different, during the clamping process in the fixing part 7, the cylinder 73 drives the V-shaped table 74 to move toward the middle at the same time. During the movement of the V-shaped table 74, the rack plate 51 in the machine tool 1 is driven to move. When the rack plate 51 is engaged with the gear disc 52, the rack plate 51 moves inside the slide 53, and the metal block 591 moves on the variable resistor 59. The cylinders to be disassembled of different sizes have different resistances, and the currents passed into the electric telescopic frame 61 are different. The lengths of the electric telescopic frame 61 are different, so that the telescopic head 6 can be changed to adapt to different cylinders.

[0033] As an implementation method, Figure 2 , Figure 3 As shown, one end of the two groups of rack plates 51 is movably connected with a connecting rod 54, and one end of the two adjacent groups of connecting rods 54 is movably connected with a rotating rod 55. An elliptical disk 56 is fixedly installed at the center of the rotating rod 55. The elliptical disk 56 is rotatably installed inside the machine tool 1, and the bottom end of the elliptical disk 56 is in contact with a telescopic rod 57. A displacement sensor 58 is arranged on the outside of the telescopic rod 57, and the displacement sensor 58 is electrically connected to the solenoid valve 45.

[0034] In this embodiment, the rack plate 51 in the machine tool 1 is driven to move during the movement of the V-table 74, and the connecting rod 54 at the end of the rack plate 51 pulls the end rotating rod 55 to rotate, the rotating rod 55 and the elliptical disk 56 rotate, and the telescopic rod 57 in conflict with it is displaced, which is transmitted to the solenoid valve 45 by the displacement sensor 58. When the hydraulic cylinder 43 drives the connecting piston 41 to move inside the movable sleeve 42, the solenoid valve 45 reduces the opening of the air outlet 44, and the resistance generates a reaction force when the connecting piston 41 moves upward, so that the larger the size of the cylinder to be disassembled, the larger the opening of the solenoid valve 45 in the air outlet 44 is opened, thereby changing the driving force at one end of the outer shell 32 to avoid damage to the cylinder cover and the cylinder caused by large torque during disassembly.

[0035] Working principle: When in use, the oil cylinder to be disassembled is placed in the fixing part 7, and the internal cylinder 73 drives the V-shaped table 74 to move toward the middle at the same time to clamp the oil cylinder, and then the fixing part 7 is driven by the movable guide rail 8 to move toward the telescopic bed head 6 until the telescopic bed head 6 contacts the cylinder cover of the oil cylinder to be disassembled, and the ratchet assembly 3 is driven to swing by the driving device 4. The hydraulic cylinder 43 in the driving device 4 drives the connecting piston 41 inside the movable sleeve 42, thereby driving the outer shell 32 to swing left and right outside the output shaft 31. During the swinging process, When the housing 32 swings forward, the pad 37 of the collar 33 contacts the claw 35, and the spring 36 at one end of the claw 35 is compressed, and the other end is separated from the gear 39. When the housing 32 swings backward, the wedge 331 in the collar 33 slides in the arc groove 332. After the wedge 331 contacts the claw 35, it drives the claw 35 to mesh with the gear 39, thereby performing a preliminary loosening of the oil cylinder cover with a large torque. After loosening, the housing 32 swings forward again, and the claw 35 is separated from the gear 39. The hydraulic motor 2 is used to drive the telescopic head 6 at the end of the output shaft 31 to be loosened at a uniform speed. When the models of the oil cylinders to be disassembled are different, during the clamping process in the fixing part 7, the cylinder 73 drives the V-shaped table 74 to move to the middle at the same time. During the movement of the V-shaped table 74, the rack plate 51 in the machine tool 1 is driven to move. When the rack plate 51 is engaged with the toothed disc 52, the rack plate 51 moves inside the slide 53, and the metal block 591 moves on the variable resistor 59. The oil cylinders to be disassembled of different sizes have different resistances, and the currents passed into the electric telescopic frame 61 are different. The lengths of the electric telescopic frame 61 are different, so that the telescopic head 6 can be changed to adapt to different oil cylinders. At the same time, the rack plate 51 in the machine tool 1 is driven to move during the movement of the V-shaped table 74, and the connecting rod 54 at the end of the rack plate 51 pulls the end rotating rod 55 to rotate, and the rotating rod 55 and the elliptical disk 56 rotate, and the telescopic rod 57 in conflict with it is displaced, and the displacement sensor 58 is used to transmit it to the solenoid valve 45. When the hydraulic cylinder 43 drives the connecting piston 41 to move inside the movable sleeve 42, the solenoid valve 45 reduces the opening of the air outlet 44, and the resistance generates a reaction force when the connecting piston 41 moves upward, so that the larger the size of the oil cylinder to be disassembled, the larger the opening of the air outlet 44, and the driving force at one end of the shell 32 is changed. When the shell 32 swings forward like the above-mentioned ratchet assembly 3, the torque for initially loosening the cylinder cover changes, so that different torques can be initially loosened according to hydraulic cylinders of different sizes, avoiding damage to the cylinder cover and the cylinder when the torque is large during disassembly.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0037] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-way loosening and disassembling device for a hydraulic cylinder cover, comprising a machine tool (1), a hydraulic motor (2) being fixedly mounted on the top of the machine tool (1), a movable guide rail (8) being fixedly mounted on the bottom of the hydraulic motor (2) on the machine tool (1), a fixing member (7) for clamping the hydraulic cylinder being slidably disposed on the movable guide rail (8), characterized in that ； The output end of the hydraulic motor (2) is provided with a ratchet assembly (3), and driving devices (4) are fixedly installed on both sides of the ratchet assembly (3), and the driving devices (4) are used to drive the ratchet assembly (3) to swing, and a telescopic headstock (6) for clamping the hydraulic cylinder cover is fixedly connected to one side of the ratchet assembly (3); An adjusting mechanism (5) is provided at the bottom of the fixing member (7), the adjusting mechanism (5) being connected to the telescopic bed head (6) and the driving device (4), the adjusting mechanism (5) being used to adjust the radius of the telescopic bed head (6) and the force of the driving device (4); The ratchet assembly (3) comprises an output shaft (31) fixedly mounted on the output end of the hydraulic motor (2); a gear (39) is fixedly mounted on the outside of the output shaft (31); a sleeve plate (38) is sleeved on the outside of the output shaft (31) via a rolling bearing; two groups of housings (32) are sleeved on the outside of the sleeve plate (38); a sleeve ring (33) is fixedly mounted on the inner wall of the housing (32); two groups of claws (35) are rotatably mounted on one side of the sleeve plate (38); two groups of adjacent claws (35) are meshed with the gear (39); the other end of the claw (35) is fixedly connected to a spring (36); the other end of the spring (36) is connected to the sleeve plate (38); and a pad (37) corresponding to the claw (35) is fixedly mounted on the inner side of the sleeve ring (33).

2. The one-way loosening hydraulic cylinder cover disassembly device according to claim 1 is characterized in that: A wedge block (331) is also fixedly mounted on the inner wall of the collar (33), and an arc groove (332) corresponding to the wedge block (331) is formed inside the sleeve plate (38).

3. The one-way loosening hydraulic cylinder cover disassembly device according to claim 1 is characterized in that: Two adjacent groups of the housings (32) are connected via bolts (34), the bolts (34) are distributed in a ring array, and the inner side of the cushion block (37) is formed into an arc surface corresponding to the claw (35).

4. The one-way loosening hydraulic cylinder cover disassembly device according to claim 1 is characterized in that: The driving device (4) comprises a connecting piston (41) movably connected to the housing (32); a hydraulic cylinder (43) is fixedly mounted on the bottom end of the connecting piston (41); a movable sleeve (42) is slidably mounted on the outside of the connecting piston (41); the hydraulic cylinder (43) is arranged on the bottom wall of the movable sleeve (42); an air outlet (44) is provided on the top of the movable sleeve (42); and a solenoid valve (45) is arranged inside the air outlet (44).

5. The one-way loosening hydraulic cylinder cover disassembly device according to claim 4 is characterized in that: The diameter of the outer bottom end of the connecting piston (41) is the same as the inner diameter of the movable sleeve (42), and the driving device (4) is arranged in an eight-shaped shape based on the center of the outer shell (32).

6. The one-way loosening hydraulic cylinder cover disassembly device according to claim 4, characterized in that: The fixing member (7) comprises a base plate (71) movably mounted on the machine tool (1), frames (72) being fixedly mounted on both sides of the top of the base plate (71), a cylinder (73) being arranged inside the frame (72), a V-shaped table (74) being fixedly mounted on the output end of the cylinder (73), and the V-shaped table (74) being slidably mounted inside the frame (72).

7. The one-way loosening hydraulic cylinder cover disassembly device according to claim 6, characterized in that: The telescopic bed head (6) comprises an electric telescopic frame (61) fixedly mounted on the end of the output shaft (31), and a stop rod (62) is fixedly mounted on the outside of the electric telescopic frame (61), and the stop rod (62) is used to clamp the hydraulic cylinder cover.

8. The one-way loosening hydraulic cylinder cover disassembly device according to claim 7, characterized in that: The adjustment mechanism (5) comprises a rack plate (51) fixedly mounted on the bottom of two groups of V-shaped tables (74); a toothed disc (52) is meshed on one side of the rack plate (51); the toothed disc (52) is rotatably mounted in the machine tool (1); a slide cylinder (53) is sleeved on the end of the rack plate (51); a variable resistor (59) is disposed inside the slide cylinder (53); a metal block (591) corresponding to the variable resistor is disposed inside the rack plate (51); and the metal block (591) is electrically connected to the electric telescopic frame (61).

9. The one-way loosening hydraulic cylinder cover disassembly device according to claim 8, characterized in that: One end of each of the two groups of rack plates (51) is movably connected to a connecting rod (54), one end of each of the two adjacent groups of connecting rods (54) is movably connected to a rotating rod (55), an elliptical disk (56) is fixedly mounted at the center of the rotating rod (55), the elliptical disk (56) is rotatably mounted inside the machine tool (1), and the bottom end of the elliptical disk (56) abuts against a telescopic rod (57), a displacement sensor (58) is arranged outside the telescopic rod (57), and the displacement sensor (58) is electrically connected to the solenoid valve (45).

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