Valve spring tool

Abstract

The utility model discloses a valve spring dismounting tool mainly relates to the engine maintenance field. Including upper pressure arm, lower pressure arm, adjusting screw, the upper pressure arm top is equipped with the support, the upper pressure arm is opened a plurality of first installation hole, lower pressure arm one end is through adjusting screw and one first installation hole rotatory connection, the lower pressure arm is away from the upper pressure arm one end and is equipped with the pressure cap, the pressure cap is opened the operating hole. The utility model has the beneficial effect that: small, can nimble adjustment lower pressure arm on the installation position of upper pressure arm, not only can cope with the dismounting of the valve lock piece of conventional position, still can more nimble to the dismounting of the valve lock piece of narrow position and inconvenient replacement position, the scope of application is wider, and can complete dismounting without disassembling cylinder cover, operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of engine repair, specifically a valve spring disassembly and assembly tool. Background Technology

[0002] Valve is an important component of an engine, controlling the intake of air and the exhaust of combustion gases through its opening and closing. A valve assembly typically includes the valve, valve lock, upper and lower valve spring seats, and valve spring. Valve closure is accomplished by the valve spring, while the valve lock limits the movement of the valve spring, ensuring that the valve spring provides the preload force needed to close the valve.

[0003] During engine valve repair, valve lock plates often need to be removed and installed. This usually requires complicated tools and the cylinder head needs to be removed to do so. The operation is cumbersome and increases material waste. Moreover, the existing removal and installation tools are too bulky to remove and install valve lock plates in narrow or inconvenient locations, which limits their operation and makes it inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a valve spring removal and installation tool. It is small in size and can flexibly adjust the installation position of the lower pressure arm on the upper pressure arm. It can not only handle the removal and installation of valve lock plates in conventional positions, but also more flexibly remove and install valve lock plates in narrow positions and inconvenient replacement positions. It has a wider range of applications and can complete the removal and installation without removing the cylinder head, making the operation more convenient.

[0005] To achieve the above objectives, this utility model employs the following technical solution: A valve spring removal and installation tool includes an upper pressure arm, a lower pressure arm, and an adjusting screw. The upper pressure arm has a support rod at its top and multiple first mounting holes. One end of the lower pressure arm is rotatably connected to one of the first mounting holes via the adjusting screw. The end of the lower pressure arm away from the upper pressure arm has a pressure cap with an operating hole.

[0006] Furthermore, the lower pressure arm includes a connector and a screw. The connector is fixedly connected to one end of the screw, and the connector is rotatably connected to one of the first mounting holes through an adjusting screw. The end of the screw away from the connector passes through the pressure cap. Two fastening nuts are threaded onto the screw. The two fastening nuts are located on the inner and outer sides of the pressure cap, respectively, and the pressure cap is fixed on the screw by the two fastening nuts.

[0007] Furthermore, the connector is provided with a second mounting hole, and the adjusting screw can pass through both the second mounting hole and the first mounting hole simultaneously.

[0008] Furthermore, the second mounting hole is also provided in multiple locations.

[0009] Furthermore, a handle is provided at the bottom end of the upper pressure arm.

[0010] Furthermore, the upper pressure arm has an approximately Z-shaped structure with a sloping surface.

[0011] Furthermore, the connector is U-shaped.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This patent uses adjusting screws and first mounting holes to rotatably connect the lower pressure arm to the upper pressure arm. The upper pressure arm is fixed to the force application fulcrum via a support rod. Rotating the lower pressure arm causes the pressure cap to be placed on top of the valve spring. Pressing the upper pressure arm causes the lower pressure arm to compress the valve spring, exposing the valve lock plate at the operating hole. This allows for convenient and quick installation and removal of the valve lock plate, thus enabling the installation and removal of the valve spring. Furthermore, multiple first mounting holes are provided, and the position of the screw can be adjusted by connecting to different first mounting holes. The mounting position of the lower pressure arm on the upper pressure arm allows for flexible adjustment and fixation of the lower pressure arm position according to different valve positions. This enables the patent to not only handle the removal and installation of valve lock plates in conventional positions, but also to more flexibly handle the removal and installation of valve lock plates in confined spaces and inconvenient replacement locations, thus broadening its applicability. Furthermore, by using a support rod to engage with any position on the engine as a fixed fulcrum, the valve lock plates can be removed and installed without disassembling the cylinder head, reducing material waste and making the operation more convenient. This, in turn, makes the removal and installation of valve springs more convenient. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the main structure of this utility model.

[0014] Appendix Figure 2 This is a side view of the lower pressure arm of this utility model.

[0015] The following are the labels in the attached diagram: 1. Upper pressure arm; 2. Lower pressure arm; 3. Adjusting screw; 4. Support rod; 5. First mounting hole; 6. Pressure cap; 7. Operating hole; 8. Connector; 9. Screw; 10. Fastening nut; 11. Second mounting hole; 12. Handle. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0017] This utility model describes a valve spring removal and installation tool. The main structure includes an upper pressure arm 1, a lower pressure arm 2, and an adjusting screw 3. The upper pressure arm 1 has a support rod 4 at its top, and a nut at the end of the support rod 4 as a locking block, allowing it to be engaged at any position on the cylinder head. After the support rod 4 is engaged and fixed with the cylinder head, it serves as the fulcrum for applying force to the upper pressure arm 1. Therefore, the valve lock plate can be removed and installed without disassembling the cylinder head, making the operation more convenient. The upper pressure arm 1 has multiple first mounting holes 5. One end of the lower pressure arm 2 is rotatably connected to one of the first mounting holes 5 via the adjusting screw 3, allowing the lower pressure arm 2 to be rotatably connected to the upper pressure arm 1. The end of the lower pressure arm 2 away from the upper pressure arm 1 has a pressure cap 6, with an operating hole 7. (The last sentence appears to be incomplete and requires further context.) Figure 2 As shown, the operating hole 7 horizontally penetrates the pressure cap 6. After the upper pressure arm 1 is fixed to the force application fulcrum by the support rod 4, the lower pressure arm 2 is rotated to put the pressure cap 6 on the top of the valve spring. Pressing the upper pressure arm 1 drives the lower pressure arm 2 to compress the valve spring, exposing the valve lock plate in the operating hole 7. The valve lock plate can then be disassembled through the operating hole 7. Similarly, during installation, the valve spring is compressed, exposing the installation position of the valve lock plate in the operating hole 7. The valve lock plate can then be installed through the operating hole 7. This allows for convenient and quick disassembly and assembly of the valve lock plate. Furthermore, the installation position of the lower pressure arm 2 on the upper pressure arm 1 can be changed by connecting the adjusting screw 3 to the first mounting hole 5 at different positions. The position of the lower pressure arm 2 can be flexibly adjusted and fixed according to the valve position. This patent can not only handle the disassembly and assembly of valve lock plates in conventional positions, but also more flexibly handle the disassembly and assembly of valve lock plates in narrow positions and inconvenient replacement positions. This also realizes the disassembly and assembly of valve springs, making it more widely applicable.

[0018] Preferably, the lower pressure arm 2 includes a connector 8 and a screw 9. The connector 8 is U-shaped and has a second mounting hole 11. The closed end of the connector 8 is fixedly connected to one end of the screw 9, and the open end of the connector 8 is inserted into the upper pressure arm 1, so that the second mounting hole 11 coincides with the first mounting hole 5 at the desired position. Then, by adjusting the screw 3 through the coincided second mounting hole 11 and first mounting hole 5, the lower pressure arm 2 and the upper pressure arm 1 are rotatably connected. The end of the screw 9 away from the connector 8 passes through the pressure cap 6, combined with the attached... Figure 1 and attached Figure 2As shown, two fastening nuts 10 are threaded onto the screw 9. The two fastening nuts 10 are located on the inner and outer sides of the pressure cap 6 away from the opening end, respectively. By simultaneously screwing the two fastening nuts 10 toward the pressure cap 6, the position of the pressure cap 6 on the screw 9 can be clamped and fixed. This allows for adjustment of the position of the pressure cap 6 on the screw 9, which can be adjusted according to the fixed position of the support rod 4 or the installation position of the valve. By clamping and fixing it with the two fastening nuts 10, the length of the lower pressure arm 2 is changed, which in turn changes the starting downward pressure height of the upper pressure arm 1. This makes it more flexible for valve spring disassembly and assembly in more special positions, and has a wider range of applications.

[0019] Preferably, the second mounting hole 11 is also provided with multiple holes, which can adjust the height of the connection position between the lower pressure arm 2 and the upper pressure arm 1, thereby further disassembling and assembling valve springs in more special positions, and making the application range wider.

[0020] Preferably, the bottom end of the upper pressure arm 1 is provided with a handle 12, which is convenient to grip and facilitates pressing and applying force.

[0021] Preferred options are listed below. Figure 1 As shown, the upper pressure arm 1 has an approximately Z-shaped structure with a slope, which reduces the stroke of the downward pressing action and makes the operation more convenient and faster.

[0022] This patent can flexibly adjust and fix the position of the lower pressure arm 2 according to the valve in different positions. This makes the patent not only able to handle the disassembly and assembly of valve lock plates in conventional positions, but also more flexible in disassembly and assembly of valve lock plates in narrow positions and positions that are inconvenient to replace. It has a wider range of applications and makes the disassembly and assembly of valve springs more convenient.

Claims

1. A valve spring removal and installation tool, characterized in that: It includes an upper pressure arm (1), a lower pressure arm (2), and an adjusting screw (3). The upper pressure arm (1) has a support rod (4) at its top end and multiple first mounting holes (5) on it. One end of the lower pressure arm (2) is rotatably connected to one of the first mounting holes (5) through the adjusting screw (3). The end of the lower pressure arm (2) away from the upper pressure arm (1) is provided with a pressure cap (6) and an operating hole (7) on it.

2. The valve spring disassembly and assembly tool according to claim 1, characterized in that: The lower pressure arm (2) includes a connector (8) and a screw (9). The connector (8) is fixedly connected to one end of the screw (9), and the connector (8) is rotatably connected to one of the first mounting holes (5) through an adjusting screw (3). The end of the screw (9) away from the connector (8) passes through the pressure cap (6). Two fastening nuts (10) are threaded on the screw (9). The two fastening nuts (10) are located on the inner and outer sides of the pressure cap (6) respectively, and the position of the pressure cap (6) on the screw (9) is fixed by the two fastening nuts (10).

3. The valve spring removal and installation tool according to claim 2, characterized in that: The connector (8) is provided with a second mounting hole (11), and the adjusting screw (3) can pass through both the second mounting hole (11) and the first mounting hole (5) at the same time.

4. The valve spring removal and installation tool according to claim 3, characterized in that: The second mounting hole (11) is also provided in multiple places.

5. The valve spring removal and installation tool according to claim 1, characterized in that: The upper pressure arm (1) is provided with a handle (12) at its bottom end.

6. The valve spring removal and installation tool according to claim 1, characterized in that: The upper pressure arm (1) is an approximately Z-shaped structure with a slope.

7. The valve spring removal and installation tool according to any one of claims 2-4, characterized in that: The connector (8) is U-shaped.

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