A dual-fuel diesel engine cylinder head dismounting and mounting platform

Abstract

The application discloses a dual-fuel diesel engine cylinder cover dismounting platform in the technical field of diesel engine cylinder cover assembly, which is used for dismounting the air valve guide pipe on the cylinder cover body. The dismounting platform comprises a workbench, a clamping mechanism arranged on the workbench and used for clamping the cylinder cover body, a bearing frame arranged on the workbench, and a dismounting driving mechanism and a dismounting auxiliary mechanism arranged on the bearing frame. The dismounting driving mechanism is arranged to dismount the air valve guide pipe on the cylinder cover. When the dismounting driving mechanism cannot drive the air valve guide pipe to move upward and separate from the mounting hole on the cylinder cover body, the heating ring is in contact with the mounting hole area on the cylinder cover body to heat the mounting hole area. The mounting hole area is uniformly heated and expanded through heat conduction. The old air valve guide pipe is dismounted smoothly by utilizing the thermal expansion difference to reduce the friction. The damage risk of the air valve guide pipe and the mounting hole is greatly reduced, and meanwhile, the assembly precision and sealing performance of the new air valve guide pipe are ensured.

Description

Technical Field

[0001] This invention relates to the field of diesel engine cylinder head assembly, and more specifically to a dual-fuel diesel engine cylinder head disassembly and assembly platform. Background Technology

[0002] During the maintenance and repair of cylinder heads of dual-fuel diesel engines, a disassembly and assembly platform is usually used to disassemble and assemble a variety of key components, including but not limited to valve guides, various sensors and connecting pipes. Among them, valve guides are particularly critical as they affect valve guiding accuracy and sealing performance.

[0003] Currently, when disassembling and assembling valve guides, the common practice on disassembly and assembly platforms is to use a combination of ejection and pressing: the old valve guide is ejected from the mounting hole on the cylinder head by a telescopic drive mechanism on the disassembly and assembly platform, and then a stamping device is used to press the new valve guide into the mounting hole on the cylinder head. However, in actual operation, some old valve guides may be difficult to remove due to long-term use, corrosion, oxidation, or excessive tightness with the mounting hole. If the traditional method is still used to force them out, it is very easy to cause the valve guide body to break, deform, or even damage the mounting hole on the cylinder head, thereby affecting the assembly accuracy and sealing performance of the new guide. Summary of the Invention

[0004] The purpose of this invention is to provide a cylinder head disassembly and assembly platform for dual-fuel diesel engines, which solves the problem that existing disassembly and assembly platforms may have difficulty removing old valve guides from the cylinder head due to long-term use, corrosion, oxidation, or excessive tightness with the mounting holes.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A dual-fuel diesel engine cylinder head disassembly and assembly platform is used to disassemble and assemble valve guides on the cylinder head body. The disassembly and assembly platform includes a workbench, a clamping mechanism on the workbench for clamping the cylinder head body, a support frame on the workbench, and a disassembly and assembly drive mechanism and a disassembly and assembly auxiliary mechanism on the support frame.

[0007] The disassembly and assembly drive mechanism includes a head and a telescopic device 1 connecting the head and the support frame. The telescopic device 1 is used to drive the head to move the air valve conduit.

[0008] The disassembly and assembly auxiliary mechanism includes a heat insulation shell that is movably sleeved on the outside of one output end of the telescopic device, and a heating ring embedded in the bottom of the heat insulation shell. The heat insulation shell has a guide hole that runs through it along the axial direction to guide the valve guide. The heating ring heats the mounting hole area when the disassembly and assembly drive mechanism cannot move the valve guide away from the mounting hole on the cylinder head body.

[0009] A further improvement is that the head includes a hollow cylinder for entering the air valve duct, a plurality of movable blocks arranged in a circular array at the bottom of the hollow cylinder, an elastic connector connecting the movable blocks and the inner wall of the hollow cylinder, and a driving block disposed inside the hollow cylinder. The driving block is connected to the inner wall of the hollow cylinder through the elastic connector. The inner wall of the hollow cylinder is provided with an electromagnetic ring that is electrically attracted to move the driving block. When the electromagnetic ring attracts the driving block to move, the driving block drives the movable block to move outward.

[0010] A further improvement is that one of the moving blocks is embedded with a detection sensor 1 for contacting one end of the air valve conduit within the mounting hole. When the detection sensor 1 detects that the pressure value of the air valve conduit reaches a preset threshold, it causes the heating ring to operate and the telescopic device 1 to stop operating.

[0011] A further improvement is that an annular channel is provided inside the heat insulation shell and above the heating ring. A matching piston is provided in the annular channel. The piston is connected to the inner wall of the annular channel through a telescopic device. One side of the annular channel is connected to a storage tank for storing loosening agent through a pipeline. The bottom of the annular channel is provided with a liquid outlet that penetrates the heat insulation shell and corresponds to the mounting hole area. Both the liquid outlet and the pipeline are equipped with one-way valves.

[0012] A further improvement is that the bottom of the heat insulation housing is also embedded with a second detection sensor for detecting the temperature of the mounting hole area on the cylinder head body. When the second detection sensor detects that the temperature has reached a preset threshold, it drives the telescopic device three to work.

[0013] A further improvement is that an oil inlet pipe is connected to the top of one side of the heat insulation shell, and a movable seat is provided through the side wall of the heat insulation shell 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 hole, and the movable seat is located inside the liquid outlet hole. The movable seat is provided with a clearance port connected to the guide hole. The movable seat is connected to the heat insulation shell through a telescopic device and is driven to move horizontally by the telescopic device. A liquid inlet hole is provided on the movable seat at a position offset from the clearance hole. A solenoid valve is provided in the liquid inlet hole. One end of the movable seat is provided with an oil outlet pipe connected to the liquid inlet hole. The other ends of both the oil outlet pipe and the oil inlet pipe are connected to a lubricating oil supply mechanism.

[0014] A further improvement is that the disassembly and assembly drive mechanism also includes a horizontal guide rail device 1 located on the top wall of the support frame, wherein the slider in the horizontal guide rail device 1 is connected to the telescopic device 1.

[0015] A further improvement is that the disassembly and assembly auxiliary mechanism also includes a second horizontal guide rail device. The slider of the second horizontal guide rail device is connected to the heat insulation shell through a bracket. The second horizontal guide rail device is also connected to the support frame through a second telescopic device, which drives the lifting and lowering.

[0016] A further improvement is that the drive block includes a moving part with a frustum-shaped vertical cross section, a T-shaped part connecting the moving part and the elastic element, and a permanent magnet embedded in the T-shaped part for cooperating with the electromagnetic ring.

[0017] A further improvement is that a vent hole penetrating the heat insulation shell is provided at the top of the inner wall of the annular channel.

[0018] The beneficial effects of this invention are as follows: This invention is equipped with a disassembly and assembly drive mechanism to disassemble the valve guide on the cylinder head. When the disassembly and assembly drive mechanism cannot move the valve guide upward to 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. The difference in thermal expansion reduces friction, assisting in the smooth disassembly of the stuck old valve guide. Furthermore, when heated to a certain temperature, a loosening agent is sprayed into the mounting hole area. The loosening agent penetrates to the connection between the old valve guide and the mounting hole, making it easier to push out the old valve guide, greatly reducing the risk of damage to the valve guide and the mounting hole. At the same time, it ensures the assembly accuracy and sealing performance of the new valve guide. Moreover, when installing the new valve guide on the cylinder head body, lubricating oil can be used to lubricate the new valve guide, reducing the pressing resistance and improving the installation efficiency and quality of the new valve guide. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the disassembly and assembly platform structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the disassembly and assembly drive mechanism and disassembly and assembly auxiliary mechanism of the present invention;

[0021] Figure 3 This is a cross-sectional view of the disassembly and assembly auxiliary mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 Another perspective of the structural cross-section;

[0023] Figure 5 For the present invention Figure 3 Enlarged view of structure A in the image;

[0024] Figure 6 For the present invention Figure 3 Enlarged view of structure B in the image;

[0025] Figure 7 This is a schematic diagram of the existing cylinder head body and valve guide structure.

[0026] In the diagram: 100, Cylinder head body; 200, Valve guide pipe; 300, Worktable; 400, Clamping mechanism; 500, Bearing frame; 600, Disassembly and assembly drive mechanism; 601, Horizontal guide rail device one; 602, Telescopic device one; 603, Hollow cylinder; 604, Drive block; 605, Elastic element; 606, Electromagnetic ring; 607, Elastic connector; 608, Moving block; 609, Detection sensor one; 700, Disassembly and assembly auxiliary... 701. Horizontal guide rail device 2; 702. Telescopic device 2; 703. Heat insulation shell; 704. Guide through hole; 705. Heating ring; 706. Annular channel; 707. Piston; 708. Telescopic device 3; 709. Detection sensor 2; 710. Liquid outlet; 711. Liquid storage tank; 712. Movable seat; 713. Clearance port; 714. Oil inlet pipe; 715. Telescopic device 4; 716. Oil outlet pipe. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0028] Example 1

[0029] Please see the appendix Figure 1 -Appendix Figure 2 and attached Figure 7 A dual-fuel diesel engine cylinder head disassembly and assembly platform is used for disassembling and assembling the valve guide 200 on the cylinder head body 100, as shown in the attached figure. Figure 7 As shown, the valve guide 200 is installed in the mounting hole (in a T shape) on the cylinder head body 100 during installation. The valve guide 200 is usually cylindrical, and some valve guides 200 also have an annular protrusion integrally formed on the top of the outer wall to ensure that the guide is not over-embedded after being pressed into place.

[0030] The disassembly and assembly platform includes a workbench 300, a clamping mechanism 400 mounted on the workbench 300 for clamping the cylinder head body 100, an L-shaped support frame 500 mounted on the workbench 300, and a disassembly and assembly drive mechanism 600 and a disassembly and assembly auxiliary mechanism 700 mounted on the support frame 500. The clamping mechanism 400 includes, for example, a bracket, a hydraulic telescopic device mounted on the bracket, and a clamp mounted on the output end of the hydraulic telescopic device. The clamp adopts a replaceable gripper 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.

[0031] The disassembly and assembly drive mechanism 600 includes a head and a telescopic device 602 (e.g., a hydraulic cylinder) connecting the head and the support frame 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 or remove it from the mounting hole of the cylinder head body 100.

[0032] The disassembly and assembly auxiliary mechanism 700 includes a heat insulation shell 703 movably sleeved on the outside of the output end of the telescopic device 602, and a heating ring 705 embedded in the bottom of the heat insulation shell 703. The heat insulation shell 703 is made of heat insulation material, which will not be described in detail here. The heat insulation shell 703 prevents the heat from the heating ring 705 from affecting other components in the heat insulation shell 703. A guide hole 704 is axially opened inside the heat insulation shell 703 to guide the air valve conduit 200. The diameter of the guide hole 704 is adapted to the air valve conduit 200. When installing the air valve conduit... At 200, it can provide precise axial guidance and apply radial limit to the guide tube through the hole wall, effectively preventing skewing during the press-fitting process; during disassembly, as the telescopic device 602 moves the valve guide tube 200 upward, the guide tube can smoothly enter the guide through hole 704. At this time, the inner wall of the guide through hole 704 continues to provide stable support, avoiding uneven disassembly force due to guide tube swing. The heating ring 705 adopts an embedded installation method, and its heating surface is flush with the bottom end of the heat insulation shell 703, ensuring full contact with the surface of the cylinder head body 100 during heating.

[0033] Considering that the old valve guide 200 may be corroded, oxidized, or too tightly fitted with the mounting hole (large interference) due to long-term use, making it difficult for the disassembly and assembly drive mechanism 600 to remove it, and that forced 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 cannot move the valve guide 200 upward to disengage from the mounting hole on the cylinder head body 100. Through heat conduction, the mounting hole area is heated and expanded evenly, and the difference in thermal expansion is used to reduce friction, assisting the disassembly and assembly drive mechanism 600 in removing the stuck valve guide 200.

[0034] As a preferred embodiment, the disassembly and assembly drive mechanism 600 of this embodiment also includes a horizontal guide rail device 601 (such as a linear electric guide rail) provided on the top wall of the support frame 500. The slider in the horizontal guide rail device 601 is connected to the telescopic device 602 to facilitate the adjustment of the head position so that it corresponds to the mounting hole.

[0035] Preferably, the disassembly and assembly auxiliary mechanism 700 in this embodiment also includes a second horizontal guide rail device 701 (e.g., a linear electric guide rail). The slider of the second horizontal guide rail device 701 is connected to the heat insulation shell 703 through a bracket. The second horizontal guide rail device 701 is also connected to the support frame 500 through a second telescopic device 702 (e.g., a hydraulic cylinder). The second telescopic device 702 drives the lifting and lowering. The second horizontal guide rail device 701 facilitates the adjustment of the heat insulation shell 703 to align with the head and mounting hole. The second telescopic device 702 facilitates the adjustment of the height of the heat insulation shell 703 to contact or separate it from the cylinder head body 100.

[0036] Example 2

[0037] Please see the appendix Figure 2-6 Based on Embodiment 1, the head of this embodiment includes a hollow cylinder 603 for entering the air valve conduit 200. The outer diameter of the hollow cylinder 603 is smaller than the inner diameter of the air valve conduit 200, allowing it to pass through the air valve conduit 200 under the drive of the telescopic device 602. Several sets 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 connector 607 connects the moving blocks 608 and the inner wall of the hollow cylinder 603. The connector 607 includes, for example, a T-shaped horizontal guide rod connected at one end to the inner wall of the hollow cylinder 603 and a spring disposed on the outer wall of the T-shaped horizontal guide rod. A movable block 608 is sleeved on the T-shaped horizontal guide rod. A drive block 604 is disposed inside the hollow cylinder 603. The drive block 604 is connected to the top inner wall of the hollow cylinder 603 via an elastic element 605 (e.g., a spring). An electromagnetic ring 606 is disposed on the inner wall of the hollow cylinder 603 to attract and move the drive block 604. When the drive block 604 moves, it drives the moving block 608 to move outward. When the moving block 608 is not moving (when the electromagnetic ring 606 is not energized), the outer end of the moving block 608 is inside the outer edge of the hollow cylinder 603. When the moving block 608 moves, the outer end of the moving block 608 extends to the outer edge of the outer edge of the hollow cylinder 603. Therefore, during disassembly, when the telescopic device 602 drives the hollow cylinder 603 to the lower part of the end of the air valve guide 200 located in the mounting hole, the moving block 608 is moved by opening the electromagnetic ring 606. At this time, the lateral part of the moving block 608 forms a reliable engagement with the end face of the guide tube. Then, the telescopic device 602 is controlled to move upward to disassemble the air valve guide 200. During installation, the moving block 608 is extended by opening the electromagnetic ring 606, and the telescopic device 602 is controlled to drive the hollow cylinder 603 to contact one end of the air valve guide 200 and press it into the mounting hole.

[0038] As a preferred embodiment, one of the movable blocks 608 in this embodiment is embedded with a detection sensor 609 (such as a miniature pressure sensor) for contacting one end of the air valve conduit 200 in the mounting hole. When the detection sensor 609 detects that the pressure value of the air valve conduit 200 reaches a preset threshold, the heating ring 705 is activated and the telescopic device 602 stops working.

[0039] The detection sensor 609 is specifically embedded in the top of one of the movable blocks 608. During disassembly, after the movable block 608 extends, the detection sensor 609 contacts one end face of the air valve conduit 200 located in the mounting hole, and monitors the change in contact pressure in real time during the disassembly process. When the telescopic device 602 pulls the head upward, if the conduit is jammed due to rust or oxidation, the pressure value detected by the detection sensor 609 will continue to rise. When the pressure value reaches the preset threshold, it immediately sends a signal to the external controller. The controller controls the heating ring 705 to start working, and the telescopic device 602 stops working. After the heating ring 705 has heated for a period of time, the telescopic device 602 is controlled to continue working. This prevents damage to the air valve conduit 200, the mounting hole, and the telescopic device 602.

[0040] Preferably, the drive block 604 in this embodiment includes a movable part with a frustum-shaped vertical cross section, a T-shaped part connecting the movable part and the elastic member 605, and a permanent magnet embedded in the T-shaped part for cooperating with the electromagnetic ring 606. By energizing the electromagnetic ring 606 to attract the permanent magnet and move it, several groups of movable blocks 608 can be moved synchronously through the movable part. When the electromagnetic ring 606 is de-energized, the movable blocks 608 are reset under the action of the elastic connector 607, and the movable part is also reset under the action of the elastic member 605.

[0041] Example 3

[0042] Please see the appendix Figure 3-4 Based on Embodiment 2, in this embodiment, an annular channel 706 is provided inside the heat insulation shell 703 and above the heating ring 705. A matching piston 707 is movably provided inside the annular channel 706. The piston 707 is connected to the inner wall of the annular channel 706 through a telescopic device 708 (such as an electric telescopic rod). The telescopic device 708 is specifically embedded in the top inner wall of the annular channel 706. One side of the annular channel 706 is connected to a storage tank 711 for storing loosening agent through a pipeline. The storage tank 711 can be provided on the outer wall of the heat insulation shell 703. The bottom of the annular channel 706 is provided with a liquid outlet 710 that penetrates the heat insulation shell 703 and corresponds to the mounting hole area. One-way valves are provided in the liquid outlet 710 and the pipeline to prevent the loosening agent in the annular channel 706 from entering the storage tank 711.

[0043] In the initial state, piston 707 is in the lower position, closing the pipe port connected to the liquid storage tank 711, preventing the loosening agent from entering the annular channel 706. When the piston 707 is driven upward by the telescopic device 3 708, the loosening agent in the liquid storage tank 711 enters the annular channel 706 under negative pressure. Subsequently, the telescopic device 3 708 drives piston 707 to return to its original position, causing the loosening agent in the annular channel 706 to be squeezed out through the outlet hole 710. The discharged loosening agent seeps into the installation hole area, achieving controlled addition of loosening agent and avoiding waste. The loosening agent is one of the most widely used functional chemicals in this field. Loosening agents that do not volatilize at high temperatures are preferred (high-temperature penetrants containing molybdenum disulfide are selected), which will not be described in detail here.

[0044] As a preferred embodiment, the bottom of the heat insulation housing 703 is also embedded with a second detection sensor 709 (such as a miniature temperature sensor) for detecting the temperature of the mounting hole area on the cylinder head body 100. When the second detection sensor 709 detects that the temperature has reached a preset threshold, it drives the telescopic device 708 to work.

[0045] 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 in the mounting hole area reaches a preset threshold, it transmits a signal to the external controller. The controller immediately starts the linkage program of the telescopic device 708: first, it controls the telescopic device 708 to move the piston 707 upward to extract the loosening agent, and then drives the piston 707 downward to accurately spray the loosening agent into the mounting hole area, so that the loosening agent penetrates into the interface between the mounting hole and the valve guide 200. The loosening agent decomposes the rust layer and further weakens the adhesion, so that the valve guide 200 can be removed. At the same time, the loosening agent penetrates when the temperature in the mounting hole area reaches the preset threshold. After heating, the gap at the joint between the valve guide 200 and the mounting hole is slightly increased, which makes it easier for the loosening agent to penetrate deeper into the connection between the valve guide 200 and the mounting hole, thus improving the effectiveness of the loosening agent.

[0046] Preferably, the top of the inner wall of the annular channel 706 in this embodiment is provided with a vent hole that penetrates the heat insulation shell 703 to ensure the air pressure balance inside the annular channel 706, and a filter screen is provided inside the vent hole.

[0047] Example 4

[0048] Please see the appendix Figure 3-4Based on Embodiment 3, in this embodiment, an oil inlet pipe 714 is connected to the top of one side of the heat insulation housing 703. A movable seat 712 is provided through the side wall of the heat insulation housing 703 at a position 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 inside the liquid outlet hole 710. The movable seat 712 is provided with a clearance port 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 air valve conduit 200. The movable seat 712 is connected to the heat insulation shell 703 via a guide hole 704 and a telescopic device 715 (such as a hydraulic cylinder). It is driven to move horizontally by the telescopic device 715. A liquid inlet is provided on the top of the movable seat 712 at a position offset from the clearance opening 713. A solenoid valve is provided in the liquid inlet. One end of the movable seat 712 is provided with an oil outlet pipe 716 that communicates with the liquid inlet. The other ends of the oil outlet pipe 716 and the oil inlet pipe 714 are both connected to a lubricating oil supply mechanism (including an oil pump, filter, liquid reservoir, etc.).

[0049] During disassembly, the clearance opening 713 is coaxial with the guide hole 704. During installation, the telescopic device 715 drives the movable seat 712 to move, causing the liquid inlet to be eccentrically positioned within the guide hole 704. Then, the new air valve conduit 200 is placed within the guide hole 704. At this time, the movable seat 712 provides bottom support for the air valve conduit 200. Lubricating oil is then 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 air valve conduit 200. Finally, the solenoid valve is opened. The lubricating oil is discharged into the lubricating oil supply mechanism through the inlet hole and the outlet pipe 716. After lubrication, the movable seat 712 is driven to reset and move by the telescopic device 715. At this time, the air valve guide 200 is lowered through the relief port 713 and the guide through hole 704. Then, the air valve guide 200 in the guide through hole 704 is pressed into the mounting hole by the disassembly and assembly drive mechanism 600. The lubricated air valve guide 200 can not only reduce the pressure resistance, but also form a permanent lubricating film at the interference fit interface, thus extending the service life of the air valve guide 200.

[0050] The embodiments described above are merely examples of several implementations of the present invention, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A cylinder head disassembly and assembly platform for a dual-fuel diesel engine, used for disassembling and assembling valve guides (200) on the cylinder head body (100), characterized in that, The disassembly and assembly platform includes a workbench (300), a clamping mechanism (400) on the workbench (300) for clamping the cylinder head body (100), a support frame (500) on the workbench (300), and a disassembly and assembly drive mechanism (600) and a disassembly and assembly auxiliary mechanism (700) on the support frame (500). The disassembly and assembly drive mechanism (600) includes a head and a telescopic device (602) connecting the head and the support frame (500). The telescopic device (602) is used to drive the head to move the air valve conduit (200). The disassembly and assembly auxiliary mechanism (700) includes a heat insulation shell (703) movably sleeved on the outside of the output end of the telescopic device (602), and a heating ring (705) embedded in the bottom of the heat insulation shell (703). The heat insulation shell (703) has a guide hole (704) that guides the valve guide (200) through it along the axial direction. The heating ring (705) heats the mounting hole area when the disassembly and assembly drive mechanism (600) cannot drive the valve guide (200) to move away from the mounting hole on the cylinder head body (100). An annular channel (706) is provided inside the heat insulation shell (703) and above the heating ring (705). A matching piston (707) is provided inside the annular channel (706). The piston (707) is connected to the inner wall of the annular channel (706) through a telescopic device (708). One side of the annular channel (706) is connected to a storage tank (711) for storing loosening agent through a pipeline. The bottom of the annular channel (706) is provided with a liquid outlet (710) that penetrates the heat insulation shell (703) and corresponds to the mounting hole area. Both the liquid outlet (710) and the pipeline are provided with one-way valves. The bottom of the heat insulation housing (703) is also embedded with a second detection sensor (709) for detecting the temperature of the mounting hole area on the cylinder head body (100). When the second detection sensor (709) detects that the temperature has reached a preset threshold, it drives the telescopic device (708) to work. The top of one side of the heat insulation shell (703) is connected to an oil inlet pipe (714). A movable seat (712) is provided through the side wall of the heat insulation shell (703) 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 the movable seat (712) is located inside the liquid outlet hole (710). The movable seat (712) is provided with a clearance opening (713) that communicates with the guide hole (704). The movable seat (712) is connected to the heat insulation shell (703) through the telescopic device four (715) and is driven to move horizontally by the telescopic device four (715). The movable seat (712) is provided with a liquid inlet hole at a position offset from the clearance opening (713). A solenoid valve is provided in the liquid inlet hole. One end of the movable seat (712) is provided with an oil outlet pipe (716) that communicates with the liquid inlet hole. The other ends of the oil outlet pipe (716) and the oil inlet pipe (714) are both connected to the lubricating oil supply mechanism.

2. The disassembly and assembly platform according to claim 1, characterized in that, The head includes a hollow cylinder (603) for entering the air valve conduit (200), a plurality of movable blocks (608) arranged in a ring array at the bottom of the hollow cylinder (603), an elastic connector (607) connecting the movable blocks (608) and the inner wall of the hollow cylinder (603), and a drive block (604) disposed in the hollow cylinder (603). The drive block (604) is connected to the inner wall of the hollow cylinder (603) through an elastic member (605). The inner wall of the hollow cylinder (603) is provided with an electromagnetic ring (606) that is electrically attracted to move the drive block (604). When the electromagnetic ring (606) attracts the drive block (604) to move, the drive block (604) drives the movable blocks (608) to move outward.

3. The disassembly and assembly platform according to claim 2, characterized in that, One of the movable blocks (608) is embedded with a detection sensor (609) for contacting one end of the air valve conduit (200) in the mounting hole. When the detection sensor (609) detects that the pressure value of the air valve conduit (200) reaches a preset threshold, it causes the heating ring (705) to work and the telescopic device (602) to stop working.

4. The disassembly and assembly platform according to claim 1, characterized in that, The disassembly and assembly drive mechanism (600) also includes a horizontal guide rail device (601) located on the top wall of the support frame (500), wherein the slider in the horizontal guide rail device (601) is connected to the telescopic device (602).

5. The disassembly and assembly platform according to claim 1, characterized in that, The disassembly and assembly auxiliary mechanism (700) also includes a second horizontal guide rail device (701). The slider of the second horizontal guide rail device (701) is connected to the heat insulation shell (703) through a bracket. The second horizontal guide rail device (701) is also connected to the support frame (500) through a second telescopic device (702), and is driven to lift by the second telescopic device (702).

6. The disassembly and assembly platform according to claim 2, characterized in that, The drive block (604) includes a movable part with a frustum-shaped vertical cross section, a T-shaped part connecting the movable part and the elastic member (605), and a permanent magnet embedded in the T-shaped part for cooperating with the electromagnetic ring (606).

7. The disassembly and assembly platform according to claim 1, characterized in that, The annular channel (706) has a vent hole at the top of its inner wall that penetrates the heat insulation shell (703).

Images