Valve guide removal device

Abstract

The application discloses a valve guide pipe dismounting device and relates to the technical field of dismounting equipment.The device comprises a supporting frame, a U-shaped plate, an extrusion shell, a dismounting mechanism and a position adjusting mechanism.The U-shaped plate comprises a first vertical plate, a second vertical plate and a bottom plate, and the middle part of the second vertical plate is fixedly connected with a first electric push rod.The extrusion shell is arranged on the top surface of the bottom plate and is fixedly connected with the output end of the first electric push rod.The extrusion shell and the first vertical plate are used for clamping and fixing the cylinder cover placed on the bottom plate.The dismounting mechanism is arranged on the top of the extrusion shell and comprises a push rod, which is used for extruding and dismounting the valve guide pipe on the cylinder cover.The position adjusting mechanism is arranged between the extrusion shell and the dismounting mechanism, can drive the dismounting mechanism to move in the direction perpendicular to the first vertical plate and the first vertical plate connecting line, and can adjust the height and the inclination angle of the push rod.The device is convenient to dismount and can quickly dismount the valve guide pipes on cylinder covers of different specifications, and is more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of disassembly equipment technology, and in particular to a valve guide disassembly device. Background Technology

[0002] Valve guides are the guiding devices for the valves in a vehicle engine, ensuring their reciprocating linear motion. Valve guides are typically interference-fitted to the cylinder head, making them difficult to remove. When a valve guide is damaged, it needs to be removed and replaced. Current methods for removing valve guides generally involve manually tapping them with a hammer and punch. However, this method is laborious, inconvenient, and inefficient. Furthermore, the tapping process can easily lead to problems such as inaccurate punch positioning and force deviation from the axis, potentially causing damage to the cylinder head and valve guide due to impact. Summary of the Invention

[0003] The purpose of this invention is to provide a valve guide removal device to solve the problems existing in the prior art. It is easy to install and remove, and can quickly remove valve guides on cylinder heads of different specifications, making it more convenient to use.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a valve guide disassembly device, comprising: a support frame, a C-shaped plate, a compression shell, a disassembly mechanism, and an adjustment mechanism. The C-shaped plate includes a first vertical plate, a second vertical plate, and a base plate. The base plate is fixedly disposed on the top of the support frame. The first vertical plate and the second vertical plate are respectively disposed at both ends of the base plate. A first electric push rod is fixedly connected to the middle of the second vertical plate. The compression shell is disposed on the top surface of the base plate and fixedly connected to the output end of the first electric push rod. The first electric push rod can drive the compression shell to slide between the first vertical plate and the second vertical plate. The side wall of the shell near the first vertical plate is an extrusion plate, which, together with the first vertical plate, is used to clamp and fix the cylinder head placed on the base plate. The disassembly mechanism is located at the top of the extrusion shell and includes a push rod. The push rod is used to contact the valve guide on the cylinder head and push the valve guide away from the cylinder head. The adjustment mechanism is located between the extrusion shell and the disassembly mechanism. The adjustment mechanism can drive the disassembly mechanism to move along a direction perpendicular to the line connecting the first vertical plate and the first vertical plate, and can adjust the height and tilt angle of the push rod.

[0006] Preferably, the adjustment mechanism includes a lateral moving device, a rotating device, a lifting device, and an angle adjusting device. The lateral moving device is slidably connected to the extrusion shell in a direction perpendicular to the line connecting the first vertical plate and the first vertical plate. The rotating device is disposed on the top of the lateral moving device and rotatably connected to the lateral moving device. The angle adjusting device is hinged to the rotating device. The lifting device is slidably connected to the angle adjusting device. The top of the lifting device is fixedly connected to the disassembly mechanism.

[0007] Preferably, the lateral moving device includes a fixed shell and a slider. The top of the fixed shell is provided with a sliding through hole. The extension direction of the sliding through hole is perpendicular to the line connecting the first vertical plate and the second vertical plate. The slider is slidably connected in the sliding through hole, and the top of the slider is fixedly connected to the rotating device.

[0008] Preferably, the rotating device includes a circular shell, a first motor, and a rotating plate. The circular shell is placed on top of the fixed shell and fixedly connected to the top of the slider. The first motor is fixedly disposed inside the circular shell, and the output shaft of the first motor is coaxially arranged with the circular shell. The rotating plate is fixedly connected to the output shaft of the first motor and coaxially arranged with the output shaft of the first motor. The edge of the rotating plate is slidably connected to the side wall of the circular shell. The angle adjustment device is disposed on the top of the rotating plate.

[0009] Preferably, the angle adjustment device includes a rotating shell, a second electric push rod, a first rotating seat, a second rotating seat, and a third rotating seat. The rotating shell is hinged to the rotating plate via the first rotating seat. The fixed end of the second electric push rod is hinged to the rotating plate via the second rotating seat. The movable end of the second electric push rod is hinged to the end of the rotating shell away from the first rotating seat via the third rotating seat.

[0010] Preferably, the lifting device includes a third electric push rod and a support rod. One end of the support rod is fixedly connected to the disassembly mechanism, and the other end is slidably connected to the rotating housing. The end of the support rod that extends into the rotating housing is provided with a placement groove. The fixed end of the third electric push rod is fixedly connected to the bottom wall of the rotating housing, and the movable end of the third electric push rod is fixedly connected to the bottom wall of the placement groove. The third electric push rod can push the support rod to slide along the rotating housing.

[0011] Preferably, the disassembly mechanism includes a rectangular shell and a fourth electric push rod. The rectangular shell is fixedly connected to the support rod. One end of the rectangular shell is provided with a circular hole. The fixed end of the fourth electric push rod is fixedly connected to the end of the rectangular shell away from the circular hole. The movable end of the fourth electric push rod is fixedly connected to the push rod. The end of the push rod away from the fourth electric push rod is used to pass through the circular hole and press against the valve guide.

[0012] Preferably, the disassembly mechanism further includes multiple round tubes and a connecting device, each round tube being sequentially sleeved on the outside of the push rod, and each round tube being sequentially and fixedly connected to the push rod from the inside to the outside through the connecting device.

[0013] Preferably, the connecting device includes a compression spring, a limiting block, and a pushing device. A connecting groove is provided on the outer wall of the push rod. A first connecting hole is provided on the circular tube at a position corresponding to the connecting groove. A second connecting hole is provided on the rectangular shell at a position corresponding to the first connecting hole. The limiting block is slidably connected to the connecting groove. One end of the compression spring is fixedly connected to the limiting block, and the other end is fixedly connected to the bottom wall of the connecting groove. The portion of the limiting block protruding from the connecting groove and extending into each of the first connecting holes is used to fix the circular tube to the push rod. The pushing device is used to pass through the second connecting hole, contact the limiting block, and push the limiting block to slide, thereby limiting the number of circular tubes connected to the push rod.

[0014] Preferably, the pushing device includes a connecting shell, a pushing block, and a bolt. The connecting shell is fixedly connected to the second connecting hole, and a threaded hole is provided on the top of the connecting shell. The pushing block is slidably connected to the connecting shell, and the bolt is threadedly connected to the threaded hole. One end of the bolt extending into the connecting shell is rotatably connected to the pushing block. Rotating the bolt can cause the pushing block to slide and push the limiting block to compress the compression spring.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] This invention provides a valve guide removal device. By placing the cylinder head on a U-shaped plate and pushing the extrusion shell to move via a first electric push rod, the cylinder head is clamped and fixed to the base plate by the extrusion shell and a first vertical plate. The lateral position, height, and tilt angle of the removal and assembly structure are adjusted by an adjustment mechanism so that the removal and assembly structure is aligned with the valve guide on the cylinder head. This allows it to be used on valve guides on cylinder heads of different specifications. The removal mechanism is used to extrude and remove the valve guide on the cylinder head, making it more convenient to use and avoiding damage to the valve guide during removal. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the valve guide disassembly device provided by the present invention;

[0019] Figure 2 A schematic diagram showing the positional relationship between the compression shell and the second rubber pad in the valve guide disassembly device provided by the present invention;

[0020] Figure 3 A schematic diagram of the adjusting mechanism in the valve guide disassembly device provided by the present invention;

[0021] Figure 4 A schematic diagram of the disassembly mechanism in the valve guide disassembly device provided by the present invention;

[0022] Figure 5 A schematic diagram showing the positional relationship between the push rod and the limiting block in the valve guide disassembly device provided by the present invention.

[0023] In the diagram: 100, support frame; 110, C-shaped plate; 120, first rubber pad; 130, extrusion shell; 140, second rubber pad; 150, first electric push rod; 200, adjusting mechanism; 210, fixed shell; 211, sliding through hole; 220, slider; 230, round shell; 240, first motor; 241, rotating plate; 250, second electric push rod; 251, second rotating seat; 260, first rotating seat; 270. Rotating shell; 280, support rod; 281, placement slot; 290, third electric push rod; 300, disassembly mechanism; 310, rectangular shell; 311, second connecting hole; 320, fourth electric push rod; 330, push rod; 331, connecting slot; 340, connecting shell; 341, threaded hole; 350, push block; 360, bolt; 370, limit block; 380, compression spring; 390, round tube; 391, first connecting hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The purpose of this invention is to provide a valve guide removal device to solve the problems existing in the prior art. It is easy to install and remove, and can quickly remove valve guides on cylinder heads of different specifications, making it more convenient to use.

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] This invention provides a valve guide disassembly device, such as... Figures 1-5 As shown, the device includes: a support frame 100, a C-shaped plate 110, an extrusion shell 130, a disassembly mechanism 300, and an adjustment mechanism 200. The C-shaped plate 110 includes a first vertical plate, a second vertical plate, and a base plate. The base plate is fixedly mounted on the top of the support frame 100. The first and second vertical plates are respectively located at both ends of the base plate. A first electric push rod 150 is fixedly connected to the middle of the second vertical plate. The extrusion shell 130 is located on the top surface of the base plate and is fixedly connected to the output end of the first electric push rod 150. The first electric push rod 150 can drive the extrusion shell 130 to slide between the first and second vertical plates. The side wall of the extrusion shell 130 near the first vertical plate is an extrusion plate. The extrusion plate and the first vertical plate are used to clamp and fix the cylinder head placed on the base plate. The disassembly mechanism 300 is located on the top of the extrusion shell 130. The disassembly mechanism 300 includes a push rod 330, which is used to engage with the cylinder head. The valve guide contacts and pushes the valve guide away from the cylinder head; the adjustment mechanism 200 is set between the extrusion shell 130 and the disassembly mechanism 300. The adjustment mechanism 200 can drive the disassembly mechanism 300 to move along a direction perpendicular to the first vertical plate and the line connecting the first vertical plate, and can adjust the height and tilt angle of the push rod 330. By placing the cylinder head on the U-shaped plate 110 and pushing the extrusion shell 130 to move through the first electric push rod 150, the cylinder head is clamped and fixed to the base plate by the extrusion shell 130 and the first vertical plate. The adjustment mechanism 200 adjusts the lateral position, height and tilt angle of the disassembly structure so that the disassembly structure is opposite to the valve guide on the cylinder head, so that it can be used for valve guides on cylinder heads of different specifications. The disassembly mechanism 300 is used to extrude and disassemble the valve guide on the cylinder head, which is more convenient to use and can avoid damage to the valve guide during disassembly.

[0028] In a preferred embodiment, a first rubber pad 120 is provided on the side of the first vertical plate near the extrusion plate, and a second rubber pad 140 is provided on the side of the extrusion plate near the first vertical plate. This improves the fixing effect of the valve guide disassembly device on the cylinder head and avoids damage to the cylinder head when clamping and fixing it.

[0029] In a preferred embodiment, the adjustment mechanism 200 includes a lateral moving device, a rotating device, a lifting device, and an angle adjusting device. The lateral moving device is slidably connected to the extrusion shell 130 in a direction perpendicular to the line connecting the first vertical plate and the first vertical plate. The rotating device is disposed on the top of the lateral moving device and rotatably connected to the lateral moving device. The angle adjusting device is hinged to the rotating device. The lifting device is slidably connected to the angle adjusting device. The top of the lifting device is fixedly connected to the disassembly mechanism 300. The operation is convenient. The lateral position of the disassembly mechanism 300 is adjusted by the lateral moving device, the horizontal direction of the disassembly mechanism 300 is adjusted by the rotating device, the tilt direction of the disassembly mechanism 300 is adjusted by the angle adjusting device, and the height of the disassembly mechanism 300 is adjusted by the lifting device.

[0030] In a preferred embodiment, the lateral moving device includes a fixed shell 210 and a slider 220. The top of the fixed shell 210 is provided with a sliding through hole 211. The extension direction of the sliding through hole 211 is perpendicular to the line connecting the first vertical plate and the second vertical plate. The slider 220 is slidably connected in the sliding through hole 211, and the top of the slider 220 is fixedly connected to the rotating device. The structure is simple, and the longitudinal movement of the disassembly mechanism 300 can be realized by moving the slider 220.

[0031] In a preferred embodiment, the rotating device includes a circular shell, a first motor 240, and a rotating plate 241. The circular shell is placed on top of the fixed shell 210 and is fixedly connected to the top of the slider 220. The first motor 240 is fixedly installed inside the circular shell, and the output shaft of the first motor 240 is coaxially arranged with the circular shell. The rotating plate 241 is fixedly connected to the output shaft of the first motor 240 and is coaxially arranged with the output shaft of the first motor 240. The edge of the rotating plate 241 is slidably connected to the side wall of the circular shell. An angle adjustment device is installed on the top of the rotating plate 241. The structure is simple and the operation is convenient. The first motor 240 can drive the rotating plate 241 to rotate, thereby realizing the horizontal rotation of the disassembly mechanism 300.

[0032] In a preferred embodiment, the angle adjustment device includes a rotating shell 270, a second electric push rod 250, a first rotating seat 260, a second rotating seat 251, and a third rotating seat. The rotating shell 270 is hinged to the rotating plate 241 via the first rotating seat 260. The fixed end of the second electric push rod 250 is hinged to the rotating plate 241 via the second rotating seat 251. The movable end of the second electric push rod 250 is hinged to the end of the rotating shell 270 away from the first rotating seat 260 via the third rotating seat. The structure is simple and easy to operate. The tilt direction of the rotating shell 270 can be adjusted by adjusting the second electric push rod 250.

[0033] In a preferred embodiment, the lifting device includes a third electric push rod 290 and a support rod 280. One end of the support rod 280 is fixedly connected to the disassembly mechanism 300, and the other end is slidably connected to the rotating housing 270. A placement groove 281 is provided at the end of the support rod 280 that extends into the rotating housing 270. The fixed end of the third electric push rod 290 is fixedly connected to the bottom wall of the rotating housing 270, and the movable end of the third electric push rod 290 is fixedly connected to the bottom wall of the placement groove 281. The third electric push rod 290 can push the support rod 280 to slide along the rotating housing 270. The structure is simple and the operation is convenient. The lifting and lowering of the support rod 280 can be achieved by the third electric push rod 290.

[0034] In a preferred embodiment, the disassembly mechanism 300 includes a rectangular shell 310 and a fourth electric push rod 320. The rectangular shell 310 is fixedly connected to the support rod 280. One end of the rectangular shell 310 is provided with a round hole. The fixed end of the fourth electric push rod 320 is fixedly connected to the end of the rectangular shell 310 away from the round hole. The movable end of the fourth electric push rod 320 is fixedly connected to the push rod 330. The end of the push rod 330 away from the fourth electric push rod 320 is used to pass through the round hole and press against the valve guide. The structure is simple. The fourth electric push rod 320 drives the push rod 330 to squeeze and disassemble the valve guide on the cylinder head, making it more convenient to use.

[0035] In a preferred embodiment, the disassembly mechanism 300 further includes a plurality of round tubes 390 and a connecting device. Each round tube 390 is sequentially sleeved on the outside of the push rod 330, and each round tube 390 can be fixedly connected to the push rod 330 from the inside to the outside through the connecting device. By selecting an appropriate number of round tubes 390 to cooperate with the push rod 330, the contact area with the valve guide is increased, avoiding the situation where the contact area with the valve guide is too small and the force on the valve guide is too large when the valve guide is squeezed and disassembled, which would cause damage to the valve guide or the push rod 330.

[0036] In a preferred embodiment, the connecting device includes a compression spring 380, a limiting block 370, and a pushing device. A connecting groove 331 is provided on the outer wall of the pushing rod 330. A first connecting hole 391 is provided on the circular tube 390 at a position corresponding to the connecting groove 331. A second connecting hole 311 is provided on the rectangular shell 310 at a position corresponding to the first connecting hole 391. The limiting block 370 is slidably connected to the connecting groove 331. One end of the compression spring 380 is fixedly connected to the limiting block 370, and the other end is fixedly connected to the bottom wall of the connecting groove 331. The portion of the limiting block 370 that protrudes from the connecting groove 331 and extends into each of the first connecting holes 391 is used to fix the round tube 390 to the push rod 330. The pushing device is used to pass through the second connecting hole 311 and contact the limiting block 370 and push the limiting block 370 to slide, thereby limiting the number of round tubes 390 connected to the push rod 330. The structure is simple. Through the cooperation between the limiting block 370, the pushing device and the compression spring 380, the fiber block can limit a specific number of round tubes 390 to follow the push rod 330 to squeeze and disassemble the valve guide.

[0037] In a preferred embodiment, the pushing device includes a connecting shell 340, a pushing block 350, and a bolt 360. The connecting shell 340 is fixedly connected to the second connecting hole 311. A threaded hole 341 is provided on the top of the connecting shell 340. The pushing block 350 is slidably connected to the connecting shell 340. The bolt 360 is threadedly connected to the threaded hole 341, and one end of the bolt 360 extending into the connecting shell 340 is rotatably connected to the pushing block 350. Rotating the bolt 360 can cause the pushing block 350 to slide and push the limiting block 370 to compress the compression spring 380. The structure is simple, and the required number of round tubes 390 fixed to the limiting block 370 can be achieved by rotating the bolt 360.

[0038] Working principle: In use, the valve guide removal device is placed in the appropriate position, and the cylinder head is placed at the other end of the inner part of the U-shaped plate 110. The first electric push rod 150 is activated, which pushes the extrusion shell 130 and the second rubber pad 140 to move to the appropriate position. The extrusion shell 130 and the second rubber pad 140, now in the appropriate position, cooperate with the first vertical plate and the first rubber pad 120 to facilitate the extrusion and fixation of the cylinder head. Then, the circular shell 230 is moved, causing the circular shell 23... The mechanism is moved to a suitable position, and by activating the first motor 240, the rotating plate 241, the first rotating seat 260, the rotating shell 270, the support rod 280, and the disassembly mechanism 300 are deflected to the appropriate position. Then, by activating the second electric push rod 250, which works in conjunction with the second rotating seat 251 and the third rotating seat, the support rod 280 is pushed to the appropriate position, thus adjusting the orientation of the disassembly mechanism 300. Finally, by activating the third electric push rod 290, the support rod 280 and the disassembly mechanism 300 are moved... Move the device to an appropriate height, adjust the position of the disassembly mechanism 300 so that the push rod 330 on the disassembly mechanism 300 is aligned with the valve guide on the cylinder head, and make the valve guide disassembly device applicable to valve guides on cylinder heads of different specifications. By rotating the bolt 360, the push block 350 is moved to an appropriate position. The push block 350, now in the appropriate position, pushes the limiting block 370 to move. The compression spring 380, in cooperation with the limiting block 370, allows an appropriate number of round tubes 390 to move along with the push rod 330. The cylinder head is moved, and then the fourth electric push rod 320 is activated, which causes the push rod 330 and an appropriate number of round tubes 390 to move. The moving push rod 330 and the appropriate number of round tubes 390 facilitate the extrusion and disassembly of the valve guide in the cylinder head, making it more convenient to use. By selecting an appropriate number of round tubes 390 to work with the push rod 330, the contact area with the valve guide is increased, avoiding the situation where the contact area with the valve guide is too small and the force on the valve guide is too large when extruding and disassembling the valve guide, which could damage the valve guide or the push rod 330.

[0039] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A valve guide disassembly device, characterized in that: include: support frame The C-shaped plate includes a first vertical plate, a second vertical plate, and a bottom plate. The bottom plate is fixedly mounted on the top of the support frame. The first vertical plate and the second vertical plate are respectively mounted at both ends of the bottom plate. A first electric push rod is fixedly connected to the middle of the second vertical plate. An extrusion shell is disposed on the top surface of the base plate and fixedly connected to the output end of the first electric push rod. The first electric push rod can drive the extrusion shell to slide between the first vertical plate and the second vertical plate. The side wall of the extrusion shell near the first vertical plate is an extrusion plate. The extrusion plate and the first vertical plate are used to clamp and fix the cylinder head placed on the base plate. A disassembly mechanism is disposed on the top of the extrusion shell. The disassembly mechanism includes a push rod for contacting the valve guide on the cylinder head and pushing the valve guide away from the cylinder head. as well as The adjustment mechanism is disposed between the extrusion shell and the disassembly mechanism. The adjustment mechanism can drive the disassembly mechanism to move along a direction perpendicular to the first vertical plate and the line connecting the first vertical plate, and can adjust the height and tilt angle of the push rod. The adjustment mechanism includes a lateral moving device, a rotating device, a lifting device, and an angle adjusting device. The lateral moving device is slidably connected to the extrusion shell in a direction perpendicular to the line connecting the first vertical plate and the first vertical plate. The rotating device is disposed on the top of the lateral moving device and is rotatably connected to the lateral moving device. The angle adjusting device is hinged to the rotating device. The lifting device is slidably connected to the angle adjusting device. The top of the lifting device is fixedly connected to the disassembly mechanism. The lateral moving device includes a fixed shell and a slider. The top of the fixed shell is provided with a sliding through hole. The extension direction of the sliding through hole is perpendicular to the line connecting the first vertical plate and the second vertical plate. The slider is slidably connected in the sliding through hole, and the top of the slider is fixedly connected to the rotating device. The rotating device includes a circular shell, a first motor, and a rotating plate. The circular shell is placed on top of the fixed shell and is fixedly connected to the top of the slider. The first motor is fixedly installed inside the circular shell, and the output shaft of the first motor is coaxially arranged with the circular shell. The rotating plate is fixedly connected to the output shaft of the first motor and is coaxially arranged with the output shaft of the first motor. The edge of the rotating plate is slidably connected to the side wall of the circular shell. The angle adjustment device is located on the top of the rotating plate. The angle adjustment device includes a rotating shell, a second electric push rod, a first rotating seat, a second rotating seat, and a third rotating seat. The rotating shell is hinged to the rotating plate through the first rotating seat. The fixed end of the second electric push rod is hinged to the rotating plate through the second rotating seat. The movable end of the second electric push rod is hinged to the end of the rotating shell away from the first rotating seat through the third rotating seat. The lifting device includes a third electric push rod and a support rod. One end of the support rod is fixedly connected to the disassembly mechanism, and the other end is slidably connected to the rotating housing. A placement groove is provided at the end of the support rod that extends into the rotating housing. The fixed end of the third electric push rod is fixedly connected to the bottom wall of the rotating housing, and the movable end of the third electric push rod is fixedly connected to the bottom wall of the placement groove. The third electric push rod can push the support rod to slide along the rotating housing. The disassembly mechanism includes a rectangular shell and a fourth electric push rod. The rectangular shell is fixedly connected to the support rod. One end of the rectangular shell is provided with a round hole. The fixed end of the fourth electric push rod is fixedly connected to the end of the rectangular shell away from the round hole. The movable end of the fourth electric push rod is fixedly connected to the push rod. The end of the push rod away from the fourth electric push rod is used to pass through the round hole and press against the valve guide. The disassembly mechanism includes multiple round tubes and connecting devices. Each round tube is sequentially sleeved on the outside of the push rod, and each round tube can be fixedly connected to the push rod from the inside to the outside through the connecting devices.

2. The valve guide disassembly device according to claim 1, characterized in that: The connecting device includes a compression spring, a limiting block, and a pushing device. A connecting groove is provided on the outer wall of the push rod. A first connecting hole is provided on the circular tube at a position corresponding to the connecting groove. A second connecting hole is provided on the rectangular shell at a position corresponding to the first connecting hole. The limiting block is slidably connected to the connecting groove. One end of the compression spring is fixedly connected to the limiting block, and the other end is fixedly connected to the bottom wall of the connecting groove. The portion of the limiting block that protrudes from the connecting groove and extends into each of the first connecting holes is used to fix the circular tube to the push rod. The pushing device is used to pass through the second connecting hole, contact the limiting block, and push the limiting block to slide, thereby limiting the number of circular tubes connected to the push rod.

3. The valve guide disassembly device according to claim 2, characterized in that: The pushing device includes a connecting shell, a pushing block, and a bolt. The connecting shell is fixedly connected to the second connecting hole. A threaded hole is provided on the top of the connecting shell. The pushing block is slidably connected to the connecting shell. The bolt is threadedly connected to the threaded hole, and one end of the bolt extending into the connecting shell is rotatably connected to the pushing block. Rotating the bolt can cause the pushing block to slide and push the limiting block to compress the compression spring.

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