A cylinder cover deep hole maintenance dismounting tool

Abstract

The present application relates to a kind of cylinder head deep hole repair dismounting frock.This frock includes the installation frame with guide slot;With recessed plate of groove is arranged on installation frame, recessed plate can be moved along guide slot, recessed groove is used to store valve guide pipe on cylinder head;With through slot of support is arranged on recessed plate;Several hydraulic cylinders are arranged at through slot;Oil injection mechanism is arranged on installation frame, for injecting hydraulic oil to hydraulic cylinder to drive hydraulic cylinder to elongate;Connecting rope is arranged between oil injection mechanism and recessed plate;The present application moves hydraulic cylinder by using the gravity of cylinder head itself to drive, so that hydraulic cylinder drives ejector pin to enter into the valve hole of cylinder head and ejects valve guide pipe, does not need manual effort, greatly reduces the work burden of worker, and installation and disassembly can be realized, it is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of cylinder head repair technology, specifically relating to a deep hole repair and disassembly tool for cylinder heads. Background Technology

[0002] The cylinder head is the cover of the engine and the component that seals the cylinders (including the water jacket, valves, and cooling fins). It serves as the mounting base for the valve mechanism and also as the sealing cover for the cylinders. Valve guides are the guiding devices for the valves in an automotive engine. The valve guides guide the valves and transfer heat from the valve stems to the cylinder head.

[0003] Several technical solutions for valve guide installation have emerged in the prior art, such as a Chinese patent with application number CN202011287289.1. This patent discloses an adjustable-angle and dustproof valve guide installation device. This patent allows air located on the lower side of the piston in the piston chamber to be sprayed into the refill chamber through an outlet check valve and alignment pipe, thereby achieving dust removal treatment at the valve guide installation site on the cylinder head and improving the reliability of installation. The supporting rotating plate drives the cylinder head to rotate alternately through the mold, thereby increasing the cleaning range of the valve guide installation site on the cylinder head and improving the service life of the cylinder head after installation. The installation screw drives the installation slide to slide downward, thereby realizing the installation of the valve guide and reducing the labor intensity of workers.

[0004] However, this patent can only install valve guides, not remove them from the valves in the cylinder head, and still requires manual operation of the lead screw for installation, so it cannot completely reduce the workload. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling for repairing and disassembling deep holes in cylinder heads in order to solve the problems mentioned in the background art.

[0006] The present invention achieves the above objectives through the following technical solutions:

[0007] A cylinder head deep hole repair and disassembly tooling includes:

[0008] Mounting bracket with guide groove;

[0009] A grooved load-bearing plate is mounted on the mounting bracket. The load-bearing plate can move along the guide groove, which is used to store valve guides on the cylinder head.

[0010] A support with a through groove installed on a load-bearing plate;

[0011] Several hydraulic cylinders are located at the through slot;

[0012] The oil injection mechanism, located on the mounting bracket, is used to inject hydraulic oil into the hydraulic cylinder to extend the hydraulic cylinder.

[0013] A connecting rope located between the oil injection mechanism and the load-bearing plate;

[0014] The cylinder head is placed on the load-bearing plate, and the load-bearing plate is pressed down by the weight of the cylinder head itself. The oil injection mechanism is driven by the connecting rope, so that hydraulic oil is injected into the hydraulic cylinder, causing the hydraulic cylinder to extend. The hydraulic cylinder extends into the valve chamber of the cylinder head and moves the valve guide in the valve chamber hole out of the valve chamber relative to the cylinder head.

[0015] Preferably, the oil injection mechanism includes an oil cylinder, a piston is provided inside the oil cylinder, a guide rod is provided on the piston extending to the outside of the oil cylinder, the end of the guide rod away from the piston is connected to a connecting rope, and a pipe for hydraulic oil to pass through is provided between the oil cylinder and the hydraulic cylinder.

[0016] Preferably, the mounting frame is equipped with a pulley block, which includes two or more movable pulleys. The mounting frame is equipped with a spool, and the connecting rope is connected to the pulley block and the load-bearing plate respectively after passing through the spool. One of the movable pulleys is equipped with a moving block. When the moving block moves, it drives the guide rod to move, causing the piston to move inside the oil cylinder.

[0017] Preferably, a slider is provided between several hydraulic cylinders and the bracket, and a diamond-shaped adjustment frame is provided between adjacent sliders. The bracket is provided with an adjustment plate connected to the adjustment frame, and a limit sleeve is provided on the load-bearing plate. A limit bolt is threadedly connected to the limit sleeve. When the limit bolt moves relative to the limit sleeve, it drives the adjustment plate to move, so that the adjustment frame drives the slider to move to adjust the distance between adjacent sliders.

[0018] Preferably, the hydraulic cylinder is provided with a ring, and several No. 1 springs are provided between the ring and the slider. The hydraulic cylinder is provided with a locking block, and a No. 2 spring is provided between the locking block and the hydraulic cylinder. The hydraulic cylinder is provided with a rigid rope and a roller, and the two ends of the rigid rope are connected to the locking block and the hydraulic cylinder respectively after passing through the roller.

[0019] Preferably, the hydraulic cylinder is provided with a ejector pin for ejecting the valve guide.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention utilizes the weight of the cylinder head itself to move the hydraulic cylinder, which in turn drives the ejector pin into the valve hole of the cylinder head to push out the valve guide. No manual effort is required, greatly reducing the workload of workers. Furthermore, installation and disassembly can be performed, making it convenient to use. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 yes Figure 1 Sectional view at point AA;

[0024] Figure 3 This is a top view of the present invention;

[0025] Figure 4 This is a schematic diagram showing the positional relationship between the locking block and the hydraulic cylinder in this invention.

[0026] In the diagram: 1. Guide groove; 2. Mounting bracket; 3. Groove; 4. Load-bearing plate; 5. Through groove; 6. Bracket; 7. Hydraulic cylinder; 8. Connecting rope; 9. Oil cylinder; 10. Guide rod; 11. Pulley block; 12. Bollard; 13. Slider; 14. Adjusting frame; 15. Adjusting plate; 16. Limit bolt; 17. Ring; 18. Spring No. 1; 19. Locking block; 20. Spring No. 2; 21. Rigid rope; 22. Roller; 23. Ejector pin. Detailed Implementation

[0027] The present application will now be described in further detail. 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] like Figure 1-4 As shown, a cylinder head deep hole repair and disassembly tool includes:

[0030] Mounting bracket 2 with guide groove 1;

[0031] A load-bearing plate 4 with a groove 3 is provided on the mounting bracket 2. The load-bearing plate 4 can move along the guide groove 1. The groove 3 is used to store the valve guide on the cylinder head.

[0032] A bracket 6 with a through groove 5 is installed on the load-bearing plate 4;

[0033] Several hydraulic cylinders 7 are installed at the through groove 5;

[0034] The oil injection mechanism, located on the mounting bracket 2, is used to inject hydraulic oil into the hydraulic cylinder 7 to drive the hydraulic cylinder 7 to extend.

[0035] A connecting rope 8 is installed between the oil injection mechanism and the load-bearing plate 4;

[0036] The cylinder head is placed on the load-bearing plate 4, and the load-bearing plate 4 is pressed down by the weight of the cylinder head itself. The oil injection mechanism is driven by the connecting rope 8, so that hydraulic oil is injected into the hydraulic cylinder 7, causing the hydraulic cylinder 7 to extend. The hydraulic cylinder 7 extends into the valve chamber of the cylinder head and moves the valve guide in the valve chamber hole out of the valve chamber relative to the cylinder head.

[0037] As a further embodiment of the present invention, the oil injection mechanism includes an oil cylinder 9, a piston is provided inside the oil cylinder 9, a guide rod 10 extending to the outside of the oil cylinder 9 is provided on the piston, the end of the guide rod 10 away from the piston is connected to the connecting rope 8, and a pipe for hydraulic oil to pass through is provided between the oil cylinder 9 and the hydraulic cylinder 7.

[0038] In the above embodiment, the cylinder head from which the valve guide needs to be removed is placed on the support plate 4, and several hydraulic cylinders 7 are aligned with the valve holes on the cylinder head. Under the influence of gravity, the cylinder head moves the support plate 4 downwards. The support plate 4, via the connecting rope 8, moves the guide rod 10 in the oil injection mechanism, causing the piston to move inside the hydraulic cylinder 9. During the movement of the hydraulic cylinder 9, hydraulic oil is injected into the hydraulic cylinder 7, causing the hydraulic cylinder 7 to extend and thus penetrate into the valve hole of the cylinder head, pushing out the valve guide. The pushed-out valve guide falls into the groove 3.

[0039] Using the same method, align the new valve guide with the valve bore, and use the hydraulic cylinder 7 to push the valve guide into the valve bore to complete the installation of the valve guide.

[0040] As a further embodiment of the present invention, the mounting frame 2 is provided with a pulley group 11, which includes two or more movable pulleys. The mounting frame 2 is provided with a spool 12. The connecting rope 8 passes through the spool 12 and is connected to the pulley group 11 and the load-bearing plate 4 respectively. One of the movable pulleys is provided with a moving block. When the moving block moves, it drives the guide rod 10 to move, causing the piston to move inside the oil cylinder 9.

[0041] In the above embodiment, the connecting rope 8 drives the movable pulley in the pulley block 11 to move during the movement. By utilizing the labor-saving characteristics of the pulley block 11, the hydraulic cylinder 7 increases the pushing force on the valve guide, thereby ensuring sufficient power during the simultaneous pushing out of multiple valve guides.

[0042] In this process, the movable pulley drives the movable block to move, and the movable block drives the guide rod 10.

[0043] As a further embodiment of the present invention, a slider 13 is provided between several hydraulic cylinders 7 and the bracket 6, and a rhomboid adjustment frame 14 is provided between adjacent sliders 13. The bracket 6 is provided with an adjustment plate 15 connected to the adjustment frame 14, and the load-bearing plate 4 is provided with a limiting sleeve. A limiting bolt 16 is threadedly connected to the limiting sleeve. When the limiting bolt 16 moves relative to the limiting sleeve, it drives the adjustment plate 15 to move, so that the adjustment frame 14 drives the slider 13 to move to adjust the distance between adjacent sliders 13.

[0044] In the above embodiment, rotating the limiting bolt 16 causes it to displace relative to the limiting sleeve. As the limiting bolt 16 moves, it drives the adjusting plate 15 to move, thereby causing the adjusting frame 14 to deform. During the deformation of the adjusting frame 14, the length of its diagonal changes, resulting in a uniform change in the distance between adjacent sliders 13. For different cylinder heads, the distance between different valve holes varies due to the different number of cylinders. Adjusting the adjusting frame 14 via the adjusting plate 15 ensures a uniform and accurate adjustment of the distance between adjacent sliders 13, guaranteeing accurate installation and removal of valve guides on the cylinder head and preventing unnecessary collisions between the hydraulic cylinder 7 and the cylinder head.

[0045] As a further embodiment of the present invention, the hydraulic cylinder 7 is provided with a ring 17, and a plurality of first springs 18 are provided between the ring 17 and the slider 13. The hydraulic cylinder 7 is provided with a locking block 19, and a second spring 20 is provided between the locking block 19 and the hydraulic cylinder 7. The hydraulic cylinder 7 is provided with a rigid rope 21 and a roller 22, and the two ends of the rigid rope 21 are connected to the locking block 19 and the hydraulic cylinder 7 respectively after passing through the roller 22.

[0046] As a further embodiment of the present invention, the hydraulic cylinder 7 is provided with a ejector pin 23 for ejecting the valve guide.

[0047] In the above embodiment, when the load-bearing plate 4 drives the hydraulic cylinder 7 to extend to a set length, the valve guide is pushed out. At this time, the hydraulic cylinder 7 drives the rigid rope 21 to move a set distance, thereby causing the rigid rope 21 to pull the locking block 19 to move a set distance. After the locking block 19 moves, it can smoothly pass through the slider 13. At this time, the locking block 19 no longer limits the hydraulic cylinder 7. Under the action of the first spring 18, the locking block 19 moves upward relative to the slider 13, thereby causing the hydraulic cylinder 7 to drive the ejector pin 23 to move upward, and thus allowing the ejector pin 23 to be pulled out from the inside of the cylinder head. After the ejector pin 23 is pulled out, the cylinder head can move normally, which facilitates the subsequent processing of the cylinder head.

[0048] 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 deep hole repair dismounting tool, characterized in that, The utility model relates to a kind of cylinder head lifting device, including: Mounting frame (2) with guide groove (1) is equipped; Supporting plate (4) with recess (3) is equipped on mounting frame (2), supporting plate (4) can be moved along guide groove (1), recess (3) is used to store valve guide on cylinder head; Support (6) with through slot (5) is equipped on supporting plate (4); Several hydraulic cylinders (7) are equipped at through slot (5); Oil injection mechanism is equipped on mounting frame (2), for injecting hydraulic oil to hydraulic cylinder (7) to drive hydraulic cylinder (7) to elongate; Connecting rope (8) is equipped between oil injection mechanism and supporting plate (4); Cylinder head is placed on supporting plate (4), the gravity of cylinder head is used to press down supporting plate (4), connecting rope (8) drives oil injection mechanism to operate, so that hydraulic oil is injected into hydraulic cylinder (7), so that hydraulic cylinder (7) elongates, hydraulic cylinder (7) is inserted into valve chamber of cylinder head, and valve guide in valve chamber hole is removed from valve chamber relative to cylinder head; Oil injection mechanism includes oil cylinder (9), piston is equipped in oil cylinder (9), guide rod (10) extending to outside of oil cylinder (9) is equipped on piston, one end of guide rod (10) away from piston is connected with connecting rope (8), pipeline for passing through hydraulic oil is equipped between oil cylinder (9) and hydraulic cylinder (7); Pulley block (11) is equipped on mounting frame (2), pulley block (11) includes more than two movable pulleys, wire spool (12) is equipped on mounting frame (2), connecting rope (8) is connected with pulley block (11) and supporting plate (4) respectively after passing through wire spool (12), one movable pulley is equipped with moving block, moving block moves to drive guide rod (10) to move to make piston move in oil cylinder (9); Sliding block (13) is equipped between several hydraulic cylinders (7) and support (6), adjusting frame (14) in diamond shape is equipped between adjacent sliding blocks (13), adjusting plate (15) connected with adjusting frame (14) is equipped on support (6), limiting sleeve is equipped on supporting plate (4), limiting bolt (16) is threadedly connected on limiting sleeve, limiting bolt (16) moves relative to limiting sleeve to drive adjusting plate (15) to move to make adjusting frame (14) drive sliding block (13) to move to adjust the distance between adjacent sliding blocks (13); Circular ring (17) is equipped on hydraulic cylinder (7), a plurality of first springs (18) are equipped between circular ring (17) and sliding block (13), clamping block (19) is equipped on hydraulic cylinder (7), second spring (20) is equipped between clamping block (19) and hydraulic cylinder (7), rigid rope (21) and roller (22) are equipped on hydraulic cylinder (7), rigid rope (21) is connected with clamping block (19) and hydraulic cylinder (7) respectively after passing through roller (22); The hydraulic cylinder (7) is equipped with ejector pin (23) for ejecting valve guide pipe; The hydraulic cylinder (7) drives the rigid rope (21) to move, so that the rigid rope (21) pulls the clamping block (19) to move, the clamping block (19) passes through the sliding block (13), the first spring (18) drives the clamping block (19) to move upwards relative to the sliding block (13), so that the hydraulic cylinder (7) drives the ejector pin (23) to move upwards, so that the ejector pin (23) is pulled out from the inside of the cylinder cover.

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