A hydraulic cylinder dismounting machine

Abstract

The application provides a excavator oil cylinder dismounting machine, and relates to the dismounting of a excavator oil cylinder. The machine comprises a frame and a moving slide. A clamping mechanism for clamping a piston rod head is installed on one side of the top end of the frame. Two cylinder brackets for supporting a cylinder barrel are arranged on one side of the clamping mechanism. Two piston rod brackets for supporting a piston rod are arranged on the other side of the clamping mechanism. The clamping mechanism comprises a support frame arranged on one side of the top end of the frame. Square columns for clamping the piston rod are arranged on both ends of the inner wall of the support frame. The cylinder barrel and the piston rod of the oil cylinder are independently supported by a double-sided adjustable bracket structure. The axial positions of the cylinder barrel and the piston rod can be independently constrained. The coaxiality of the cylinder barrel or the piston rod can be ensured. The positions of the first bracket base and the second bracket base are adjusted according to the extension amount of the piston rod. The piston rod is supported by double support points. The longer side of the piston rod is prevented from being suspended by single-point support.

Description

Technical Field

[0001] This invention relates to the disassembly and assembly of excavator hydraulic cylinders, and more particularly to an excavator hydraulic cylinder disassembly and assembly machine. Background Technology

[0002] Hydraulic cylinders are core actuators in fields such as construction machinery and mining equipment. However, after prolonged use, hydraulic cylinders may leak oil and wear out seals. Therefore, it is necessary to disassemble the cylinder head, remove the piston, replace the seals, and then reassemble them. A cylinder disassembly and assembly machine is a special tooling equipment used to disassemble and assemble hydraulic cylinder guide sleeves and piston threads in excavators, loaders, and similar products.

[0003] However, the support of traditional horizontal disassembly and assembly machines is usually a single piece, used to support the cylinder that has not been disassembled. When the cylinder is disassembled, the piston rod is easily lost after being removed from the cylinder barrel and becomes suspended. The traditional support point is at the end of the cylinder barrel and cannot be moved, so it cannot be adjusted with the change of the piston rod extension. The piston rod is equivalent to a cantilever beam, and gravity causes bending deformation, resulting in damage to the seals. At the same time, traditional single-point or two-point support cannot independently constrain the axial position of the cylinder barrel and piston rod, and cannot achieve independent support after the cylinder barrel and piston rod are separated after disassembly. Summary of the Invention

[0004] The problem that this invention aims to solve is that the support of traditional disassembly and assembly machines is usually a single piece, which cannot be adjusted according to the change in the extension of the piston rod. The longer side is prone to losing support and becoming suspended in the air, and gravity causes bending deformation. At the same time, traditional single-point or two-point support cannot achieve independent support after the cylinder barrel and piston rod are separated after the hydraulic cylinder is disassembled.

[0005] To solve the above-mentioned technical problems, the present invention provides an excavator cylinder disassembly and assembly machine, including a frame and a movable slide table disposed at its top. A clamping mechanism for clamping the piston rod head is installed on one side of the top of the frame. Two cylinder brackets for supporting the cylinder are disposed on one side of the clamping mechanism. Two piston rod brackets for supporting the piston rod are disposed on the other side of the clamping mechanism. A first lifting mechanism for adjusting the center height is disposed at the bottom end of the cylinder brackets and piston rod brackets. The clamping mechanism includes a support frame located on one side of the top of the frame. Both ends of the inner wall of the support frame are provided with square columns for clamping the piston rod. Both ends of the support frame are equipped with a first servo motor for driving the square columns to clamp the piston rod head. A second lift is provided below the support frame for adjusting the height of the support frame.

[0006] Preferably, the bottom end of the cylinder support is provided with a first support base, and the bottom end of the piston rod support is provided with a second support base. The bottom ends of the first support base and the second support base are movably connected to the top end of the movable slide via a slider. The cylinder support and the piston rod support respectively support the cylinder and the piston rod, and are driven to move on the top end of the movable slide via the first support base and the second support base. The bottom ends of the first support base and the second support base are each provided with a first driving device for driving the slider to move on the movable slide.

[0007] Preferably, the top ends of both the cylinder support and the piston rod support are movably connected to a lifting frame, and the top end of the lifting frame is provided with a roller support frame for supporting the cylinder and piston rod, and the top end of the roller support frame is provided with two rollers.

[0008] Preferably, a plurality of the first lifting machines are respectively installed on one side of the top of the first bracket base and the second bracket base, and the extended ends are fixedly connected to the bottom end of the lifting frame. The other side of the top of the first bracket base and the second bracket base is equipped with a second servo motor for driving the first lifting machine to adjust the center height of the lifting frame.

[0009] Preferably, the bottom end of the support frame is provided with a third bracket base, the bottom end of the third bracket base is movably connected to the top end of the movable slide table through a slider, the protruding end of the second elevator passes through the third bracket base and is fixedly connected to the bottom end of the support frame, and a third servo motor for adjusting the center height of the support frame by the second elevator is installed on the third roller base.

[0010] Preferably, a U-shaped frame is installed at one end of the support frame, and a clamping cylinder is installed at the end of the U-shaped frame away from the support frame. The protruding end of the clamping cylinder passes through the U-shaped frame and is fixedly connected to a push block.

[0011] Preferably, a screw tightening mechanism is installed at the top center of the frame and is located between the first bracket base and the second bracket base. The screw tightening mechanism includes a mounting bracket located at the top of the frame. A limiting slide is fixedly installed at the top of the mounting bracket. A tightening housing is movably installed at the top of the limiting slide. A socket wrench for tightening the screws on the cylinder flange is installed at the output end of the tightening housing.

[0012] Preferably, a second driving device for driving the tightening machine housing to move on the limiting slide is installed at the top of the limiting slide, and a third driving device for driving the screw tightening mechanism to move on the frame is installed at the bottom of the mounting bracket.

[0013] Preferably, a tailstock is installed at one end of the frame away from the clamping mechanism, one end of the tailstock is provided with a synchronous clamping assembly with an adjustable opening width, and the other end of the tailstock is provided with a rotary motor for controlling the synchronous clamping assembly.

[0014] Preferably, the synchronous clamping assembly includes a linear guide rail mounted on one end of the tailstock, and two grippers for clamping the cylinder bottom lugs are movably mounted on the linear guide rail via sliders.

[0015] The technical effects and advantages of this invention are as follows: This invention provides independent support for the cylinder barrel and piston rod of the hydraulic cylinder through a dual-sided adjustable bracket structure. During cylinder assembly and disassembly, both parts are always supported, preventing the risk of either part falling. Furthermore, the dual-support point method independently constrains the axial positions of the cylinder barrel and piston rod. When force is applied during cylinder disassembly, the brackets on both sides fix their respective axes, preventing torque-induced axial displacement and effectively avoiding damage to the seals caused by shearing. Simultaneously, the cylinder barrel and piston rod on each support roller are supported by two rollers, ensuring that the cylinder barrel or piston rod always maintains good coaxiality.

[0016] This invention utilizes a first bracket base and a second bracket base to drive two cylinder brackets and piston rod brackets on both sides. When disassembling the hydraulic cylinder, the piston rod will move out of the cylinder. To prevent the piston rod from losing support after disassembly, the position of the two piston rod brackets can be adjusted by moving the second bracket base on the sliding table according to the change in the extension of the piston rod. This allows the two piston rod brackets to adjust their position according to the change in the extension of the piston rod. Furthermore, the invention employs a double support point, which avoids the situation where the longer side of the piston rod is suspended in the air due to single-point support, resulting in bending and deformation under the influence of gravity.

[0017] This invention features a first lifting mechanism to adjust the center height of the first and second bracket bases, and a second lifting mechanism to adjust the center height of the clamping mechanism. These first and second lifting mechanisms allow the device to adjust the center height of the supporting structure and the clamping mechanism according to the size and specifications of the hydraulic cylinders, thus achieving centering and positioning. After the clamping mechanism clamps and fixes the piston rod head, it adjusts the centerline according to the position of the supporting structure. The third bracket base drives the clamping mechanism to move back and forth on the sliding table, ensuring that the piston rod can be accurately inserted into the cylinder, effectively improving the adaptability and working efficiency of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall elevation structure of the present invention.

[0019] Figure 2 This is a top view of the overall structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 5 This is a schematic diagram of the clamping mechanism of the present invention.

[0023] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B.

[0024] Figure 7 This is a schematic diagram of the screw tightening mechanism of the present invention.

[0025] The attached diagram is labeled as follows: 1. Frame; 2. Moving slide; 3. First bracket base; 4. Second bracket base; 5. Clamping mechanism; 51. Support frame; 52. Square column; 53. Third bracket base; 54. U-shaped frame; 55. Clamping cylinder; 56. Push block; 6. Cylinder support; 7. Piston rod support; 8. Lifting frame; 9. Roller support frame; 10. Roller; 11. Screw tightening mechanism; 111. Mounting frame; 112. Limiting slide; 113. Tightening housing; 114. Socket wrench; 12. Tailstock; 13. Synchronous clamping assembly; 131. Linear guide rail; 132. Gripper. Detailed Implementation

[0026] This invention provides an excavator hydraulic cylinder disassembly and assembly machine, such as... Figure 1 - Figure 7 As shown, the device includes a frame 1 and a movable slide 2 mounted on its top. A clamping mechanism 5 for clamping the piston rod head is installed on one side of the top of the frame 1. Two cylinder support brackets 6 for supporting the cylinder barrel are provided on one side of the clamping mechanism 5. Two piston rod support brackets 7 for supporting the piston rod are provided on the other side of the clamping mechanism 5. A first lifting mechanism for adjusting the center height is provided at the bottom of the cylinder support brackets 6 and the piston rod support brackets 7. The cylinder barrel and piston rod of the hydraulic cylinder are independently supported by the double-sided adjustable support bracket structure provided on the top of the frame 1.

[0027] Furthermore, such as Figure 3 and Figure 5 As shown, the clamping mechanism 5 includes a support frame 51 located on one side of the top of the frame 1. Both ends of the inner wall of the support frame 51 are provided with square columns 52 for clamping the piston rod. Both ends of the support frame 51 are equipped with first servo motors for driving the square columns 52 to clamp the piston rod head. A second lifting mechanism for adjusting the height of the support frame 51 is provided below the support frame 51. The inner wall of the square columns 52 is connected to clamps. When clamping the piston rod, the piston rod head is first placed inside the support frame 51. Then, the first servo motors on both sides are started. The two first servo motors work with the reducer to drive the square columns 52 on both sides to move towards the middle and clamp the piston rod head through the two clamps.

[0028] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, the bottom end of the cylinder support 6 is provided with a first support base 3, and the bottom end of the piston rod support 7 is provided with a second support base 4. The bottom ends of the first support base 3 and the second support base 4 are movably connected to the top end of the movable slide table 2 via a slider. The cylinder support 6 and the piston rod support 7 support the cylinder and piston rod respectively, and are driven to move on the top end of the movable slide table 2 by the first support base 3 and the second support base 4. The bottom ends of the first support base 3 and the second support base 4 are each provided with a first driving device for driving the slider to move on the movable slide table 2, so as to realize the back-and-forth movement of the first support base 3 and the second support base 4 on the frame 1. The first driving device is a linear motor, which directly drives the slider to move the first support base 3 and the second support base 4 back and forth on the movable slide table 2. When the cylinder is disassembled, the piston rod will be moved out of the cylinder. To prevent the piston rod from losing support after disassembly, the positions of the two piston rod brackets 7 can be moved according to the extension of the piston rod. During the movement, the second bracket base 4 is first driven by the first drive device to move on the top of the moving slide table 2 via the slider, so that the two piston rod brackets 7 can adjust their positions according to the extension of the piston rod. Since the piston rod head is clamped and fixed by the clamping mechanism 5, when the piston rod is completely removed, the clamping mechanism 5 releases the clamping and fixing of the piston rod. The piston rod body is supported by the two adjustable piston rod brackets 7, and the double support point support can avoid the situation where the longer side of the piston rod is suspended in the air due to single-point support, and bent and deformed due to gravity.

[0029] Furthermore, such as Figure 4 As shown, both the cylinder support 6 and the piston rod support 7 are movably connected to a lifting frame 8 at their top ends. The top end of the lifting frame 8 is equipped with a roller support 9 for supporting the cylinder and piston rod. The top end of the roller support 9 is equipped with two rollers 10. The cylinder and piston rod are independently supported by the adjustable brackets on both sides. When the cylinder is disassembled or assembled, both parts are always supported, avoiding the risk of any part falling. Moreover, both adopt a double support point support method, which can independently constrain the axial position of the cylinder and piston rod. When force is applied to disassemble the cylinder, the brackets on both sides fix the axis, preventing the torque from causing the axis to shift. This effectively avoids the seals being sheared and damaged. At the same time, the cylinder and piston rod on each roller support 9 are supported by two rollers 10, ensuring that the cylinder or piston rod always maintains good coaxiality.

[0030] Furthermore, such as Figure 4As shown, several first lifting mechanisms are respectively installed on one side of the top of the first bracket base 3 and the second bracket base 4, and their extended ends are fixedly connected to the bottom of the lifting frame 8. The other side of the top of the first bracket base 3 and the second bracket base 4 are each equipped with a second servo motor for driving the first lifting mechanism to adjust the center height of the lifting frame 8. The first lifting mechanism consists of a hydraulic lifting cylinder, a lead screw, a lifting block, etc., and the top of the lifting block is connected to the bottom of the lifting frame 8. The first lifting mechanism allows the device to adjust the center height of the supporting structure according to the different sizes of hydraulic cylinders, ensuring that the axial position of each component is consistent. During adjustment, the second servo motor is first started, which drives the lead screw to rotate. The lifting block is threadedly connected to the surface of the lead screw. When the lead screw rotates, the lifting block converts the rotation into axial linear displacement. The axial linear displacement of the lifting block drives the lifting frame 8 to move up and down, thereby adjusting the center height of the cylinder bracket 6 and the piston rod bracket 7, and also playing a role in centering and positioning.

[0031] Furthermore, such as Figure 5 As shown, a third bracket base 53 is provided at the bottom of the support frame 51. The bottom of the third bracket base 53 is movably connected to the top of the movable slide table 2 via a slider. The extended end of the second lift passes through the third bracket base 53 and is fixedly connected to the bottom of the support frame 51. A third servo motor for adjusting the center height of the support frame 51 is installed on the third bracket base 53. A hydraulic motor is installed at the bottom of the third bracket base 53. As the hydraulic motor moves, it drives the clamping mechanism 5 to move back and forth on the movable slide table 2 via a gear and rack. The structure of the second lift is the same as that of the first lift. The working principle of the third servo motor and the second lift is the same as that of the second servo motor and the first lift. The specific position of the support frame 51 is adjusted according to the specific specifications and dimensions of the disassembled and assembled hydraulic cylinder. During adjustment, the third servo motor is started to drive the second lift, and the specific height of the support frame 51 is adjusted by the second lift.

[0032] Furthermore, such as Figure 5 As shown, a U-shaped frame 54 is installed at one end of the support frame 51, and a clamping cylinder 55 is installed at the end of the U-shaped frame 54 away from the support frame 51. The extended end of the clamping cylinder 55 passes through the U-shaped frame 54 and is fixedly connected to a push block 56. When installing the piston rod, the piston rod head is first clamped by the square columns 52 on both sides. Then, it is moved to the assembly position on the moving slide table 2 by the third bracket base 53. Then, the clamping cylinder 55 is activated, and the extended end of the clamping cylinder 55 pushes the push block 56 to move towards the piston rod, pushing the piston rod into the cylinder and completing the assembly of the cylinder.

[0033] Furthermore, such as Figure 3 , Figure 6 and Figure 7As shown, a screw tightening mechanism 11 is installed at the top center of the frame 1, located between the first bracket base 3 and the second bracket base 4. The screw tightening mechanism 11 includes a mounting bracket 111 located at the top of the frame 1. A limiting slide 112 is fixedly installed at the top of the mounting bracket 111. A tightening housing 113 is movably installed at the top of the limiting slide 112. A socket wrench 114 for tightening the screws on the cylinder flange is installed at the output end of the tightening housing 113. The bottom end of the mounting bracket 111 is movably connected to the movable slide 2 via a slider. The cylinder and the... The piston rod is supported by the cylinder support 6 and piston rod support 7 on both sides. After the hydraulic cylinder 55 pushes the piston rod into the inner cavity of the cylinder, the tightening machine 113 is started. The working principle of the tightening machine 113 is that the servo motor and the reducer transmit torque to the gears to drive the socket wrench 114 to tighten the screws on the cylinder flange. This replaces manual operation, has a large disassembly torque, and can flexibly adjust the disassembly force. It solves the problem that the hydraulic cylinder guide sleeve cannot be disassembled manually due to the rusted threads when the hydraulic cylinder is disassembled, and effectively improves the working efficiency of the device.

[0034] Furthermore, such as Figure 3 , Figure 6 and Figure 7 As shown, a second drive device is installed at the top of the limiting slide 112 to drive the tightening housing 113 to move on the limiting slide 112, and a third drive device is installed at the bottom of the mounting bracket 111 to drive the screw tightening mechanism 11 to move on the frame 1. The working principle of the second drive device is to drive the tightening housing 113 to move back and forth on the limiting slide 112 by using a servo motor and a reducer in conjunction with a guide rail slider to adapt to cylinders of different diameters. The working principle of the third drive device is the same: the mounting bracket 111 is driven to move on the moving slide 2 by using a servo motor and a reducer in conjunction with a gear rack to move the slider on the moving slide 2 to achieve back and forth movement on the frame 1 to adapt to cylinders of different lengths.

[0035] Furthermore, such as Figure 1 - Figure 3 As shown, a tailstock 12 is installed at the end of the frame 1 away from the clamping mechanism 5. One end of the tailstock 12 is provided with a synchronous clamping assembly 13 with an adjustable opening width. The other end of the tailstock 12 is provided with a rotary motor for controlling the synchronous clamping assembly 13. The rotary motor is connected to the synchronous clamping assembly 13 through a transmission mechanism to provide rotational power, drive the synchronous clamping assembly 13 to limit the rear end of the cylinder, and bear the axial force and tilting moment during cylinder assembly through the rotary motor.

[0036] Furthermore, such as Figure 3As shown, the synchronous clamping assembly 13 includes a linear guide rail 131 installed at one end of the tailstock 12. Two jaws 132 for clamping the cylinder bottom lugs are movably mounted on the linear guide rail 131 via a slider. By rotating the lead screw in the linear guide rail 131, the two jaws 132 are driven to move synchronously in the radial direction and move towards the center at the same time, fixing the cylinder bottom in the center position.

[0037] The working principle of this invention is as follows: When assembling the hydraulic cylinder, the piston rod is first assembled by hoisting it onto the cylinder support 6 at the rear end of the frame 1. The center height of the cylinder support 6 is adjusted by the first lifting mechanism. The rotary motor is started to control the synchronous clamping assembly 13, which clamps the piston rod head by the synchronous movement of the upper and lower jaws 132. Then, the piston mounting fixture is installed on the screw tightening mechanism 11, and the screw tightening mechanism 11 is started to install the piston onto the piston rod. After the piston is installed, the piston rod is hoisted out of the frame 1. Next, the hydraulic cylinder model to be assembled is selected, and the corresponding model is installed on the screw tightening mechanism 11. The socket wrench 114 and tooling are used to hoist the cylinder onto the cylinder support 6 at the rear end of the frame 1 for support. The corresponding first lifting mechanism is started to adjust the center height of the cylinder support 6. During adjustment, the second servo motor drives the lead screw to rotate, causing the axial linear displacement of the lifting block in the first lifting mechanism to move the lifting frame 8 up and down, thereby adjusting the center height of the cylinder support 6 and simultaneously achieving centering and positioning. Then, the rotary horse is started to control the synchronous clamping assembly 13 to clamp the cylinder bottom. Through the rotation of the lead screw in the linear guide rail 131, the two jaws 132 move synchronously radially and simultaneously towards the center, fixing the cylinder bottom. The piston rod is then positioned at the center. Next, the corresponding piston rod is hoisted onto the piston rod bracket 7 at the front end of the frame 1 for support. The corresponding first lifting mechanism is activated to adjust the center height of the piston rod bracket 7, using the same adjustment method as the cylinder bracket 6. Immediately afterward, the first servo motor of the piston rod clamping mechanism 5 is activated. The two first servo motors work in conjunction with the reducer to drive the square columns 52 on both sides of the inner wall of the support frame 51 to move towards the center and clamp the piston rod head through two clamps. After clamping, the clamping cylinder 55 is activated, and the extension of the extended end of the clamping cylinder 55 pushes the push block 56 to press against the piston rod head. Then, according to the specific position of the cylinder, the clamping mechanism 5 is moved to the appropriate position on the moving slide table 2 by the hydraulic motor control. Then, the extension end of the clamping cylinder 55 is controlled to continue to extend to push the piston rod into the cylinder. After the piston rod is inserted into the inner cavity of the cylinder, the guide sleeve is manually put on and the screw on the guide sleeve is screwed on. Then, the tightening box 113 in the screw tightening mechanism 11 is started. The corresponding servo motor in the tightening box 113 cooperates with the reducer to transmit torque to the gear, so as to drive the socket wrench 114 to tighten the screw on the cylinder flange and automatically tighten the screw on the guide sleeve. After the assembly is completed, the assembled cylinder is lifted out. When disassembling the hydraulic cylinder, the cylinder to be disassembled is lifted and placed on the cylinder support 6 and piston rod support 7 for support. The double support structure on both sides independently supports the cylinder barrel and piston rod. The position of the hydraulic cylinder on the moving slide table 2 is adjusted by the sliders at the bottom of the first support base 3 and the second support base 4, causing the cylinder bottom to move into the synchronous clamping assembly 13. The rotation of the lead screw in the linear guide rail 131 drives the two grippers 132 to move radially towards the center synchronously, fixing the cylinder bottom in the center position. The rotary motor is then started to provide rotational power, driving the synchronous clamping assembly 13 to limit the rear end of the cylinder barrel. Once the bottom position of the hydraulic cylinder is fixed... After completion, the hydraulic motor at the bottom of the third bracket base 53 and the third drive device at the bottom of the mounting bracket 111 are started. As the hydraulic motor moves, it drives the clamping mechanism 5 to move back and forth on the moving slide table 2 through the gear rack. As the servo motor and reducer in the third drive device cooperate with the gear rack, the mounting bracket 111 moves back and forth on the moving slide table 2 through the slider, realizing the back and forth movement of the screw tightening mechanism 11 on the frame 1 to adapt to the support of oil cylinders of different lengths. After the position adjustment is completed, the clamping mechanism 5 makes the piston rod located inside the support frame 51, and the first servo motors on both sides are started to drive the square columns 52 on both sides to move towards the middle to clamp the piston rod. After the hydraulic cylinder is completely fixed, adjust the center height and position of the bracket structure according to the specific model of the hydraulic cylinder. During adjustment, first adjust the center height of the cylinder support 6 and piston rod support 7 using the corresponding first lifting mechanism to ensure that the cylinder and piston rod are supported on the roller support 9 by the rollers 10. Two cylinder supports 6 and two piston rod supports 7 are used to independently support the cylinder and piston rod respectively, ensuring that both are always supported during cylinder assembly and disassembly, and independently constraining the axial positions of the cylinder and piston rod. After fixing, start the screw tightening mechanism 11, control the socket wrench 114 to reverse, and disassemble the screws on the cylinder flange to replace... The process involves manual operation. After disassembly, the hydraulic motor at the bottom of the third bracket base 53 is activated to drive the clamping mechanism 5 to move on the moving slide 2, thereby moving the disassembled piston rod out of the cylinder. When the piston rod moves out, the first drive device is activated to drive the second bracket base 4 to move on the top of the moving slide 2 via a slider. This allows the two piston rod brackets 7 to adjust their positions according to the extension of the piston rod, avoiding the situation where the longer side of the piston rod is suspended in the air due to gravity when it moves out due to single-point support. This ensures that both parts are always supported after disassembly, avoiding the risk of either part falling. After disassembly, the cylinder and piston rod parts are lifted out separately.

[0038] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An excavator cylinder disassembly and assembly machine, comprising a frame (1) and a movable slide (2) disposed at its top, characterized in that: A clamping mechanism (5) for clamping the piston rod head is installed on one side of the top of the frame (1). Two cylinder brackets (6) for supporting the cylinder are provided on one side of the clamping mechanism (5). Two piston rod brackets (7) for supporting the piston rod are provided on the other side of the clamping mechanism (5). A first lifting mechanism for adjusting the center height is provided at the bottom of the cylinder brackets (6) and the piston rod brackets (7). The clamping mechanism (5) includes a support frame (51) located on one side of the top of the frame (1). Both ends of the inner wall of the support frame (51) are provided with square columns (52) for clamping the piston rod. Both ends of the support frame (51) are equipped with a first servo motor for driving the square columns (52) to clamp the piston rod head. A second lift is provided below the support frame (51) for adjusting the height of the support frame (51).

2. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: The cylinder support (6) is provided with a first support base (3) at its bottom end, and the piston rod support (7) is provided with a second support base (4) at its bottom end. The bottom ends of the first support base (3) and the second support base (4) are movably connected to the top end of the movable slide (2) via a slider. The cylinder support (6) and the piston rod support (7) support the cylinder and the piston rod respectively, and are driven to move on the top end of the movable slide (2) via the first support base (3) and the second support base (4). The bottom ends of the first support base (3) and the second support base (4) are each provided with a first driving device for driving the slider to move on the movable slide (2).

3. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: The top ends of the cylinder support (6) and piston rod support (7) are movably connected to a lifting frame (8). The top end of the lifting frame (8) is provided with a roller support frame (9) for supporting the cylinder and piston rod. The top end of the roller support frame (9) is provided with two rollers (10).

4. The excavator cylinder disassembly and assembly machine according to claim 3, characterized in that: Several of the first elevators are respectively installed on one side of the top of the first bracket base (3) and the second bracket base (4), and the extended end is fixedly connected to the bottom of the elevator frame (8). The other side of the top of the first bracket base (3) and the second bracket base (4) are each equipped with a second servo motor for driving the first elevator to adjust the center height of the elevator frame (8).

5. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: The support frame (51) is provided with a third bracket base (53) at its bottom end. The bottom end of the third bracket base (53) is movably connected to the top end of the movable slide (2) via a slider. The extended end of the second elevator passes through the third bracket base (53) and is fixedly connected to the bottom end of the support frame (51). A third servo motor for adjusting the center height of the support frame (51) by the second elevator is installed on the third bracket base (53).

6. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: A U-shaped frame (54) is installed at one end of the support frame (51), and a clamping cylinder (55) is installed at the end of the U-shaped frame (54) away from the support frame (51). The extended end of the clamping cylinder (55) passes through the U-shaped frame (54) and is fixedly connected to a push block (56).

7. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: A screw tightening mechanism (11) is installed at the top center of the frame (1) and is located between the first bracket base (3) and the second bracket base (4). The screw tightening mechanism (11) includes a mounting bracket (111) located at the top of the frame (1). A limiting slide (112) is fixedly installed at the top of the mounting bracket (111). A tightening housing (113) is movably installed at the top of the limiting slide (112). A socket wrench (114) for tightening the screws on the cylinder flange is installed at the output end of the tightening housing (113).

8. The excavator cylinder disassembly and assembly machine according to claim 7, characterized in that: The top of the limiting slide (112) is equipped with a second driving device for driving the tightening machine (113) to move on the limiting slide (112), and the bottom of the mounting bracket (111) is equipped with a third driving device for driving the screw tightening mechanism (11) to move on the frame (1).

9. The excavator cylinder disassembly and assembly machine according to claim 1, characterized in that: The frame (1) is equipped with a tailstock (12) at one end away from the clamping mechanism (5). One end of the tailstock (12) is provided with a synchronous clamping assembly (13) with an adjustable opening width. The other end of the tailstock (12) is equipped with a rotary motor for controlling the synchronous clamping assembly (13).

10. The excavator cylinder disassembly and assembly machine according to claim 9, characterized in that: The synchronous clamping assembly (13) includes a linear guide rail (131) installed at one end of the tailstock (12), and two jaws (132) for clamping the cylinder bottom lugs are movably mounted on the linear guide rail (131) via a slider.

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