Disassembling and assembling platform for cylinder cover of dual-fuel diesel engine

Abstract

The invention discloses a dual-fuel diesel engine cylinder cover disassembling and assembling platform in the technical field of diesel engine cylinder cover assembling, which is used for disassembling and assembling an air valve guide pipe on a cylinder cover main body and comprises a working table, a clamping mechanism arranged on the working table and used for clamping the cylinder cover main body, and a bearing frame arranged on the working table, the disassembly and assembly driving mechanism and the disassembly and assembly auxiliary mechanism are arranged on the bearing frame. The dismounting and mounting driving mechanism is arranged to dismount the air valve guide pipe on the air cylinder cover, and when the dismounting and mounting driving mechanism cannot drive the air valve guide pipe to move upwards to be separated from the mounting hole in the air cylinder cover body, the heating ring makes contact with the mounting hole area in the air cylinder cover body to heat the mounting hole area; the mounting hole area is uniformly heated and expanded through heat conduction, friction force is reduced through heat expansion difference, the stuck old air valve guide pipe is assisted to be smoothly disassembled, the damage risk of the air valve guide pipe and the mounting hole is greatly reduced, and meanwhile the assembling precision and the sealing performance of the new air valve guide pipe are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of diesel engine cylinder head assembly, and particularly to a disassembly and assembly platform for a dual-fuel diesel engine cylinder head. Background Art

[0002] During the maintenance and repair of a dual-fuel diesel engine cylinder head, a disassembly and assembly platform is usually used to disassemble and assemble various key components, including but not limited to valve guides, various sensors, and connecting pipelines. Among them, the valve guide, as an important component affecting valve guiding accuracy and sealing performance, is particularly crucial during the disassembly and assembly process.

[0003] Currently, when disassembling and assembling a valve guide on a disassembly and assembly platform, it is generally through a combination of ejection and pressing: that is, the old valve guide is ejected from the installation hole on the cylinder head by a telescopic driving mechanism on the disassembly and assembly platform, and then a new valve guide is pressed into the installation hole on the cylinder head by a stamping device. However, during the actual operation, some old valve guides may be rusted, oxidized or too tightly fitted with the installation hole due to long-term use, making it difficult to smoothly remove them. If the traditional method is still used to forcibly eject at this time, it is extremely easy to cause the valve guide body to break, deform, and even damage the installation hole on the cylinder head, thereby affecting the assembly accuracy and sealing performance of the subsequent new guide pipe. Summary of the Invention

[0004] The purpose of the present invention is to provide a disassembly and assembly platform for a dual-fuel diesel engine cylinder head, which solves the problem that when disassembling the old valve guide on the cylinder head of the existing disassembly and assembly platform, the old valve guide may be rusted, oxidized or too tightly fitted with the installation hole due to long-term use, making it difficult to smoothly remove it.

[0005] The present invention achieves the above purpose through the following technical solutions: A disassembly and assembly platform for a dual-fuel diesel engine cylinder head, used for disassembling and assembling the valve guide on the cylinder head body. The disassembly and assembly platform includes a workbench, a clamping mechanism provided on the workbench for clamping the cylinder head body, a carrier frame provided on the workbench, and a disassembly and assembly driving mechanism and a disassembly and assembly auxiliary mechanism provided on the carrier frame; Among them, the disassembly and assembly driving mechanism includes a head and a telescopic device one connecting the head and the carrier frame, and the telescopic device one is used to drive the head to drive the valve guide to move; The disassembly and assembly auxiliary mechanism includes a heat insulation shell movably sleeved outside the output end of the telescopic device one, and a heating ring embedded at the bottom of the heat insulation shell. A guiding through hole for guiding the valve guide is axially penetrated in the heat insulation shell, and the heating ring heats the installation hole area when the disassembly and assembly driving mechanism cannot drive the valve guide to move out of the installation hole on the cylinder head body.

[0006] A further improvement is that the head includes a hollow cylinder for entering the air valve guide tube, a plurality of groups of movable blocks arranged in a ring array at the bottom of the hollow cylinder, an elastic connecting piece connecting the movable block and the inner wall of the hollow cylinder, and a driving block arranged in the hollow cylinder, the driving block is connected to the inner wall of the hollow cylinder through an elastic piece, and the inner wall of the hollow cylinder is provided with an electromagnetic ring that is energized to attract the driving block to move, and when the electromagnetic ring attracts the driving block to move, the driving block drives the movable block to move outward.

[0007] A further improvement is that a detection sensor 1 is embedded on one of the moving blocks for contacting one end of the air valve guide tube in the mounting hole. When the detection sensor 1 detects that the pressure value of the air valve guide tube reaches a preset threshold, the heating ring is activated and the telescopic device 1 stops working.

[0008] A further improvement is that an annular channel is provided in the thermal insulation shell and above the heating ring, a corresponding piston is provided in the annular channel, the piston is connected to the inner wall of the annular channel by a telescopic device, one side of the annular channel is connected to a liquid storage tank for storing loosening agent through a pipeline, and a liquid outlet hole is provided at the bottom of the annular channel, which passes through the thermal insulation shell and corresponds to the mounting hole area, and a one-way valve is provided in the liquid outlet hole and the pipeline.

[0009] A further improvement is that a second detection sensor for detecting the temperature of the mounting hole area on the cylinder head body is embedded in the bottom of the heat-insulating shell. When the second detection sensor detects that the temperature reaches a preset threshold, the third telescopic device is driven to work.

[0010] A further improvement is that an oil inlet pipe is connected to the top of one side of the heat-insulating shell, and a movable seat is provided through the side wall of the heat-insulating shell and at a position between the heating ring and the annular channel. The width of the movable seat is greater than the diameter of the guide through-hole and the movable seat is located on the inner side of the liquid outlet. A avoidance port connected to the guide through-hole is provided on the movable seat, and the movable seat is connected to the heat-insulating shell through the fourth telescopic device and is driven horizontally by the fourth telescopic device. A liquid inlet hole is provided on the movable seat at a position staggered from the avoidance port, and a solenoid valve is provided in the liquid inlet hole. An oil outlet pipe connected to the liquid inlet hole is provided at one end of the movable seat, and the other ends of the oil outlet pipe and the oil inlet pipe are both connected to the lubricating oil supply mechanism.

[0011] A further improvement is that the disassembly and assembly drive mechanism also includes a horizontal guide rail device 1 provided on the top wall of the carrier frame, and the slider in the horizontal guide rail device 1 is connected to the telescopic device 1.

[0012] A further improvement is that the disassembly and assembly auxiliary mechanism also includes a horizontal guide rail device 2, the slider of the horizontal guide rail device 2 is connected to the insulation shell through a bracket, and the horizontal guide rail device 2 is also connected to the support frame through a telescopic device 2, and is driven to rise and fall by the telescopic device 2.

[0013] Further improvement lies in that the driving block includes a moving part with a frustum-shaped vertical cross-section, a T-shaped part connecting the moving part and the elastic member, and a permanent magnet embedded on the T-shaped part for cooperating with the electromagnetic ring.

[0014] Further improvement lies in that vent holes penetrating the heat insulation housing are provided at the top of the inner wall of the annular channel.

[0015] The beneficial effects of the present invention are as follows: The present invention is provided with a disassembly and assembly driving mechanism to disassemble the valve guide on the cylinder head. When the disassembly and assembly driving mechanism fails to drive the valve guide to move upward and disengage from the mounting hole on the cylinder head body, the heating ring contacts the mounting hole area on the cylinder head body to heat the mounting hole area. Through heat conduction, the mounting hole area is uniformly heated and expanded, and the friction force is reduced by using the thermal expansion difference to assist in smoothly disassembling the stuck old valve guide. And when heated to a certain temperature, a loosening agent is also sprayed onto the mounting hole area. The loosening agent penetrates to the connection between the old valve guide and the mounting hole, making it easier to eject the old valve guide, greatly reducing the risk of damage to the valve guide and the mounting hole. At the same time, the assembly accuracy and sealing performance of the new valve guide are ensured. And when the new valve guide is installed into the cylinder head body, the new valve guide can be lubricated with lubricating oil to reduce the pressing resistance and improve the installation efficiency and quality of the new valve guide. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the disassembly and assembly platform of the present invention; Figure 2 It is a schematic structural diagram of the disassembly and assembly driving mechanism and the disassembly and assembly auxiliary mechanism of the present invention; Figure 3 It is a cross-sectional view of the disassembly and assembly auxiliary mechanism of the present invention; Figure 4 For the present invention Figure 3 Another perspective cross-sectional view; Figure 5 For the present invention Figure 3 The enlarged view of structure A in the present invention; Figure 6 For the present invention Figure 3 The enlarged view of structure B in the present invention; Figure 7 It is a schematic structural diagram of the existing cylinder head body and valve guide.

[0017] In the figure: 100, cylinder head body; 200, valve guide; 300, workbench; 400, clamping mechanism; 500, carrier; 600, disassembly and assembly driving mechanism; 601, horizontal guide device 1; 602, telescopic device 1; 603, hollow cylinder; 604, driving block; 605, elastic member; 606, electromagnetic ring; 607, elastic connecting member; 608, moving block; 609, detection sensor 1; 700, disassembly and assembly auxiliary mechanism; 701, horizontal guide device 2; 702, telescopic device 2; 703, heat insulation housing; 704, guiding through hole; 705, heating ring; 706, annular channel; 707, piston; 708, telescopic device 3; 709, detection sensor 2; 710, liquid outlet hole; 711, liquid storage tank; 712, movable seat; 713, avoidance opening; 714, oil inlet pipeline; 715, telescopic device 4; 716, oil outlet pipeline. Detailed implementation manners

[0018] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following detailed implementation manners are only used to further illustrate the present application and cannot be construed as a limitation on the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0019] Embodiment 1 Please refer to the attached Figure 1 - attached Figure 2 and attached Figure 7 , a disassembly and assembly platform for a cylinder head of a dual-fuel diesel engine, used for disassembling and assembling the valve guide 200 on the cylinder head body 100. As shown in the attached Figure 7 , when the valve guide 200 is installed, it is installed in the installation hole (in a T shape) on the cylinder head body 100. The valve guide 200 is usually cylindrical, and an annular convex portion and the like are integrally formed on the top of the outer wall of some valve guides 200 to ensure that the guide will not be overly embedded after being press-fitted in place; The disassembly and assembly platform includes a workbench 300, a clamping mechanism 400 provided on the workbench 300 for clamping the cylinder head body 100, an L-shaped carrier 500 provided on the workbench 300, and a disassembly and assembly driving mechanism 600 and a disassembly and assembly auxiliary mechanism 700 provided on the carrier 500. The above-mentioned clamping mechanism 400 includes, for example, a bracket, a hydraulic telescopic device provided on the bracket, and a clamp provided at the output end of the hydraulic telescopic device. The clamp adopts a replaceable jaw design and is fixed by bolts or a quick-release structure to ensure stable clamping of cylinder heads of different shapes. Of course, the clamping mechanism 400 is not limited to this one; The assembly and disassembly drive mechanism 600 includes a head and a telescopic device 602 (e.g., a hydraulic cylinder) connecting the head and the carrier 500. The telescopic device 602 is used to drive the head to move the valve guide 200 so as to press the valve guide 200 into the mounting hole of the cylinder head body 100 or remove the valve guide 200 from the mounting hole of the cylinder head body 100. The disassembly and assembly auxiliary mechanism 700 includes a heat-insulating shell 703 that is movably mounted on the outer side of the output end of the telescopic device 602, and a heating ring 705 embedded in the bottom of the heat-insulating shell 703. The heat-insulating shell 703 is made of a heat-insulating material, which will not be described in detail here. The heat-insulating shell 703 prevents the heat of the heating ring 705 from affecting other components in the heat-insulating shell 703. A guide hole 704 for guiding the air valve guide 200 is axially opened in the heat-insulating shell 703. The diameter of the guide hole 704 is adapted to the air valve guide 200. When installing the air valve guide When the guide tube 200 is at 200, it can provide precise axial guidance and impose radial limit on the guide tube through the hole wall, effectively preventing deflection during the press-fitting process; during the disassembly operation, as the telescopic device 602 drives the valve guide tube 200 upward, the guide tube can smoothly enter the guide hole 704. At this time, the inner wall of the guide hole 704 continues to provide stable support, avoiding uneven disassembly force caused by the swing of the guide tube. The heating ring 705 adopts an embedded installation method, and its heating surface is flush with the bottom end of the insulation shell 703, ensuring full contact with the surface of the cylinder head body 100 during heating; Considering that the old valve guide 200 may rust or oxidize due to long-term use, or fit too tightly with the mounting hole (large interference fit), making it difficult to remove the disassembly and assembly drive mechanism 600, and forcible operation may damage the valve guide 200 or the mounting hole, the heating ring 705 locally heats the mounting hole area on the cylinder head body 100 (temperature controlled at 150-200°C) when the disassembly and assembly drive mechanism 600 is unable to drive the valve guide 200 to move upward and out of the mounting hole on the cylinder head body 100. Through heat conduction, the mounting hole area is evenly heated and expanded, and the thermal expansion difference is used to reduce friction, thereby assisting the disassembly and assembly drive mechanism 600 in removing the stuck valve guide 200.

[0020] Preferably, the assembly and disassembly drive mechanism 600 of this embodiment further includes a horizontal guide rail device 601 (e.g., a linear electric guide rail) provided on the top wall of the carrier 500. The slider in the horizontal guide rail device 601 is connected to the telescopic device 602 to facilitate adjustment of the head position so that it corresponds to the mounting hole. Preferably, the disassembly and assembly assisting mechanism 700 of this embodiment further includes a second horizontal guide device 701 (such as a linear electric guide rail, etc.). The slider of the second horizontal guide device 701 is connected to the heat insulation housing 703 through a bracket. The second horizontal guide device 701 is also connected to the carrier 500 through a second telescopic device 702 (such as a hydraulic cylinder, etc.). It is lifted by the second telescopic device 702. The heat insulation housing 703 can be conveniently adjusted through the second horizontal guide device 701 to correspond to the head and the mounting hole. The height of the heat insulation housing 703 can be conveniently adjusted through the second telescopic device 702 to make it contact or separate from the cylinder head body 100.

[0021] Embodiment 2 Please refer to the attached Figures 2 - 6 Referring to the attached drawings, on the basis of Embodiment 1, the head of this embodiment includes a hollow cylinder 603 for entering the valve guide 200. The outer diameter of the hollow cylinder 603 is smaller than the inner diameter of the valve guide 200. It can pass through the valve guide 200 under the drive of the first telescopic device 602. A plurality of groups of moving blocks 608 are arranged in a circular array at the bottom of the hollow cylinder 603. The moving blocks 608 are L-shaped. An elastic connecting member 607 connecting the moving blocks 608 and the inner wall of the hollow cylinder 603. The elastic connecting member 607 includes, for example, a T-shaped horizontal guide rod with one end connected to the inner wall of the hollow cylinder 603 and a spring arranged on the outer wall of the T-shaped horizontal guide rod. The moving blocks 608 are sleeved on the T-shaped horizontal guide rod. And a driving block 604 arranged in the hollow cylinder 603. The driving block 604 is connected to the inner wall of the top of the hollow cylinder 603 through an elastic member 605 (such as a spring). An electromagnetic ring 606 for adsorbing and driving the driving block 604 to move is arranged on the inner wall of the hollow cylinder 603. When the electromagnetic ring 606 adsorbs the driving block 604 to move, the driving block 604 drives the moving blocks 608 to move outward. When the moving blocks 608 do not move (when the electromagnetic ring 606 is not energized), the outer ends of the moving blocks 608 are located inside the circumferential outer edge of the hollow cylinder 603. When the moving blocks 608 move, the outer ends of the moving blocks 608 extend to the outside of the circumferential outer edge of the hollow cylinder 603. Therefore, during disassembly, when the first telescopic device 602 drives the hollow cylinder 603 to move to the lower part of one end of the valve guide 200 located in the mounting hole, by turning on the electromagnetic ring 606, the moving blocks 608 move. At this time, the horizontal part of the moving blocks 608 forms a reliable clamping with the catheter end face. Then, by controlling the first telescopic device 602 to move upward, the valve guide 200 can be disassembled. And during installation, by turning on the electromagnetic ring 606 to control the moving blocks 608 to extend, and controlling the first telescopic device 602 to drive the hollow cylinder 603 to contact one end of the valve guide 200 and press it into the mounting hole.

[0022] Preferably, a first detection sensor 609 (such as a micro pressure sensor) for contacting with one end of the air valve conduit 200 inside the installation hole is embedded on one of the moving blocks 608 in this embodiment. When the first detection sensor 609 detects that the pressure value of the air valve conduit 200 reaches a preset threshold, the heating ring 705 starts to work, and the first telescopic device 602 stops working; Specifically, the first detection sensor 609 is embedded on the top of one of the moving blocks 608. During disassembly, after the moving block 608 extends out, the first detection sensor 609 contacts the end face of the air valve conduit 200 located inside the installation hole, and the contact pressure change during the disassembly process is monitored in real time. When the first telescopic device 602 pulls the head upward, if the conduit is stuck due to rust or oxidation, the pressure value detected by the first detection sensor 609 will continue to rise. When the pressure value reaches the preset threshold, a signal is immediately sent to an external controller, and the controller controls the heating ring 705 to start working, and the first telescopic device 602 stops working. After the heating ring 705 heats for a period of time, the first telescopic device 602 is controlled to continue working, so as to prevent damage to the air valve conduit 200, the installation hole, and the first telescopic device 602.

[0023] Preferably, the driving block 604 of this embodiment includes a moving part with a frustum-shaped vertical cross-section, a T-shaped part connecting the moving part and the elastic member 605, and a permanent magnet embedded on the T-shaped part for cooperating with the electromagnetic ring 606. By energizing the electromagnetic ring 606 to adsorb the permanent magnet to move, several groups of moving blocks 608 can be synchronously moved through the moving part. When the electromagnetic ring 606 is powered off, the moving blocks 608 are reset under the action of the elastic connecting member 607, and the moving part is also reset under the action of the elastic member 605.

[0024] Embodiment 3 Please refer to the appendix Figures 3 - 4 On the basis of Embodiment 2, an annular channel 706 is formed above the heating ring 705 inside the heat insulation housing 703 in this embodiment. A piston 707 that fits is movably arranged in the annular channel 706. The piston 707 is connected to the inner wall of the annular channel 706 through a third telescopic device 708 (such as an electric telescopic rod, etc.). The third telescopic device 708 is specifically embedded in the top inner wall of the annular channel 706. One side of the annular channel 706 is communicated with a liquid storage tank 711 for storing a loosening agent through a pipeline. The liquid storage tank 711 can be arranged on the outer wall of the liquid storage tank 703. An outlet hole 710 corresponding to the installation hole area and passing through the heat insulation housing 703 is provided at the bottom of the annular channel 706. One-way valves are provided in both the outlet hole 710 and the pipeline, so that the loosening agent in the annular channel 706 cannot enter the liquid storage tank 711; In the initial state, the piston 707 is in the lower position, closing the pipeline port connecting to the liquid storage tank 711, so that the loosening agent does not enter the annular channel 706. When the piston 707 is driven to move upward by the third telescopic device 708, under the action of negative pressure, the loosening agent in the liquid storage tank 711 enters the annular channel 706. Subsequently, the third telescopic device 708 drives the piston 707 to reset downward, so that the loosening agent in the annular channel 706 is squeezed out through the liquid outlet hole 710. The discharged loosening agent penetrates into the installation hole area, realizing the controlled addition of the loosening agent and avoiding waste. The loosening agent is one of the functional chemicals widely used in this field. It is preferred to use a loosening agent that does not volatilize at high temperatures (select a high-temperature penetrant containing molybdenum disulfide), which will not be elaborated here.

[0025] Preferably, a second detection sensor 709 (such as a micro temperature sensor) for detecting the temperature of the installation hole area on the cylinder head body 100 is also embedded at the bottom of the heat insulation housing 703 in this embodiment. When the second detection sensor 709 detects that the temperature reaches the preset threshold, it drives the third telescopic device 708 to work; When the heating ring 705 contacts the surface of the cylinder head body 100, the detection end of the second detection sensor 709 also contacts the cylinder head body 100. When the second detection sensor 709 detects that the temperature of the installation hole area reaches the preset threshold, it transmits a signal to the external controller, and the controller immediately starts the linkage program of the third telescopic device 708: first, control the third telescopic device 708 to drive the piston 707 to move upward to extract the loosening agent, and then drive the piston 707 to press down to accurately spray the loosening agent into the installation hole area, so that the loosening agent penetrates into the joint interface between the installation hole and the valve guide 200. The loosening agent decomposes the rust layer and further weakens the adhesion, so as to remove the valve guide 200. At the same time, the loosening agent penetrates when the temperature of the installation hole area reaches the preset threshold. The gap at the joint between the heated valve guide 200 and the installation hole slightly increases, which is convenient for the loosening agent to penetrate deeper into the connection between the valve guide 200 and the installation hole, improving the use effect of the loosening agent.

[0026] Preferably, a ventilation hole penetrating the heat insulation housing 703 is opened at the top of the inner wall of the annular channel 706 in this embodiment to ensure the air pressure balance in the annular channel 706, and a filter screen is arranged in the ventilation hole.

[0027] Embodiment 4 Please refer to the appendix Figures 3 - 4On the basis of Example 3, the top of one side of the heat-insulating shell 703 of this embodiment is connected to an oil inlet pipeline 714, and a movable seat 712 is provided through the side wall of the heat-insulating shell 703 and located between the heating ring 705 and the annular channel 706. The width of the movable seat 712 is greater than the diameter of the guide hole 704 and is located on the inner side of the liquid outlet hole 710. The movable seat 712 is provided with an avoidance opening 713 that is adapted to the diameter of the guide hole 704 and is connected to the guide hole 704, so as not to affect the inlet of the gas valve guide 200. A guide through-hole 704 is formed, and a movable seat 712 is connected to the heat-insulating housing 703 via a fourth telescopic device 715 (e.g., a hydraulic cylinder). The movable seat 712 is driven to move horizontally by the fourth telescopic device 715. A liquid inlet is formed at the top of the movable seat 712, offset from the avoidance opening 713. A solenoid valve is provided in the liquid inlet. An oil outlet line 716 communicating with the liquid inlet is provided at one end of the movable seat 712. The other ends of the oil outlet line 716 and the oil inlet line 714 are both connected to a lubricating oil supply mechanism (including an oil pump, a filter, a liquid storage shell, etc.). During disassembly, the avoidance opening 713 is coaxial with the guide hole 704. During installation, the movable seat 712 is moved by the telescopic device 715 so that the liquid inlet hole is eccentrically located in the guide hole 704. Then, the new valve guide 200 is placed in the guide hole 704. At this time, the movable seat 712 provides bottom support for the valve guide 200. Then, lubricating oil is injected into the oil inlet line 714 through the lubricating oil supply mechanism. The injected lubricating oil enters the guide hole 704 and adheres to the valve guide 200. Then, the solenoid valve is opened. The lubricating oil is discharged into the lubricating oil supply mechanism through the liquid inlet hole and the oil outlet pipe 716. After lubrication, the movable seat 712 is driven to return and move by the telescopic device 715. At this time, the air valve guide 200 is downward through the avoidance opening 713 and the guide through hole 704. The air valve guide 200 in the guide through hole 704 is then pressed into the installation hole by the disassembly and assembly driving mechanism 600. The lubricated air valve guide 200 not only reduces the press-fitting resistance, but also forms a permanent lubricating film on the interference fit interface, thereby extending the service life of the air valve guide 200.

[0028] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A disassembly and assembly platform for a cylinder head of a dual-fuel diesel engine, which is used for disassembling and assembling a valve guide (200) on a cylinder head main body (100), and is characterized in that The disassembly and assembly platform comprises a workbench (300), a clamping mechanism (400) provided on the workbench (300) for clamping a cylinder head body (100), a carrier (500) provided on the workbench (300), and a disassembly and assembly driving mechanism (600) and a disassembly and assembly auxiliary mechanism (700) provided on the carrier (500); The disassembly and assembly driving mechanism (600) includes a head and a telescopic device (602) connecting the head and the carrier (500), wherein the telescopic device (602) is used to drive the head to move the air valve guide tube (200); The disassembly and assembly auxiliary mechanism (700) comprises a heat-insulating shell (703) movably mounted on the outer side of the output end of the telescopic device (602), and a heating ring (705) embedded in the bottom of the heat-insulating shell (703). A guide through hole (704) for guiding the air valve guide (200) is axially penetrated in the heat-insulating shell (703). The heating ring (705) heats the mounting hole area when the disassembly and assembly driving mechanism (600) is unable to drive the air valve guide (200) to move away from the mounting hole on the cylinder head body (100).

2. The disassembling and assembling platform according to claim 1, wherein The head comprises a hollow cylinder (603) for entering the air valve guide tube (200), a plurality of groups of moving blocks (608) arranged in a ring array at the bottom of the hollow cylinder (603), an elastic connecting member (607) connecting the moving blocks (608) and the inner wall of the hollow cylinder (603), and a driving block (604) arranged in the hollow cylinder (603), wherein the driving block (604) is connected to the inner wall of the hollow cylinder (603) through an elastic member (605), and an electromagnetic ring (606) is provided on the inner wall of the hollow cylinder (603) for attracting the driving block (604) to move when powered. When the electromagnetic ring (606) attracts the driving block (604) to move, the driving block (604) drives the moving block (608) to move outward.

3. The disassembly and assembly platform according to claim 2, characterized in that, A detection sensor (609) is embedded in one of the moving blocks (608) for contacting one end of the air valve guide tube (200) in the mounting hole. When the detection sensor (609) detects that the pressure value of the air valve guide tube (200) reaches a preset threshold, the heating ring (705) is activated and the telescopic device (602) stops operating.

4. The disassembling and assembling platform according to claim 1, wherein An annular channel (706) is provided in the heat-insulating shell (703) and above the heating ring (705); a corresponding piston (707) is provided in the annular channel (706); the piston (707) is connected to the inner wall of the annular channel (706) via a telescopic device (708); one side of the annular channel (706) is connected to a liquid storage tank (711) for storing a loosening agent via a pipeline; a liquid outlet (710) is provided at the bottom of the annular channel (706) and passes through the heat-insulating shell (703) and corresponds to the mounting hole area; a one-way valve is provided in both the liquid outlet (710) and the pipeline.

5. The disassembly and assembly platform according to claim 4, characterized in that, A second detection sensor (709) for detecting the temperature of the mounting hole area on the cylinder head body (100) is also embedded in the bottom of the heat-insulating shell (703). When the second detection sensor (709) detects that the temperature reaches a preset threshold, it drives the third telescopic device (708) to work.

6. The disassembly and assembly platform according to claim 4, wherein An oil inlet pipeline (714) is connected to the top of one side of the heat-insulating shell (703). A movable seat (712) is provided through the side wall of the heat-insulating shell (703) and located between the heating ring (705) and the annular channel (706). The width of the movable seat (712) is greater than the diameter of the guide through hole (704). The movable seat (712) is located inside the liquid outlet hole (710). A relief opening (713) communicating with the guide through hole (704) is provided on the movable seat (712). The movable seat (712) is connected to the heat-insulating shell (703) through the telescopic device (715) and is driven to move horizontally by the telescopic device (715). A liquid inlet hole is provided on the movable seat (712) at a position offset from the avoidance opening (713). A solenoid valve is provided in the liquid inlet hole. An oil outlet pipeline (716) communicating with the liquid inlet hole is provided at one end of the movable seat (712). The other ends of the oil outlet pipeline (716) and the oil inlet pipeline (714) are both connected to a lubricating oil supply mechanism.

7. The dismountable platform according to claim 1, wherein The assembly and disassembly driving mechanism (600) further comprises a horizontal guide rail device (601) provided on the top wall of the carrier (500), wherein a slider in the horizontal guide rail device (601) is connected to a telescopic device (602).

8. The disassembly and assembly platform according to claim 1, characterized in that The disassembly and assembly auxiliary mechanism (700) also includes a horizontal guide rail device (701) 2, the slider of the horizontal guide rail device (701) is connected to the heat-insulating shell (703) through a bracket, and the horizontal guide rail device (701) is also connected to the carrier frame (500) through a telescopic device (702) 2, and is driven to rise and fall by the telescopic device (702).

9. The dismountable platform according to claim 2, wherein The driving block (604) comprises a moving part with a truncated cone shape in vertical section, a T-shaped part connecting the moving part and the elastic member (605), and a permanent magnet embedded in the T-shaped part for cooperating with the electromagnetic ring (606).

10. The disassembly and assembly platform according to claim 4, wherein, A vent hole penetrating the heat-insulating shell (703) is provided on the top of the inner wall of the annular channel (706).

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