Disassembling and assembling tool for valve guide pipe of cylinder cover

Abstract

The utility model discloses a dismounting tool for a valve guide pipe of a cylinder cover. The dismounting tool comprises a supporting frame, the lifting platform is vertically arranged in the supporting frame in a sliding mode, a jack is fixedly connected to the top of the lifting platform, an installation pipe used for installing an ejector rod is fixedly connected to the bottom of the lifting platform, and a reset piece is fixedly connected between the lifting platform and the connecting cross beam. Notches at the two ends are clamped on the outer side of the supporting frame, it is guaranteed that the lifting table can vertically slide, and operation is easy, convenient and stable. A reset piece (spring) is fixedly connected between the lifting table and the connecting cross beam, after the jack extends to eject the valve guide pipe out, the spring can drive the lifting table to automatically reset, a fixing plate in the clamping assembly is adjustably installed, and through arrangement of a rotating base and a limiting arc plate, the angle of a workpiece can be flexibly adjusted, so that the valve guide pipe corresponds to the position of an installation pipe.

Description

Technical Field

[0001] This utility model relates to the field of valve guide disassembly and assembly technology, specifically a cylinder head valve guide disassembly and assembly tool. Background Technology

[0002] The cylinder head valve guide is a part of the engine cylinder head, made of a highly wear-resistant metal material (such as aluminum alloy or copper alloy). It is used to fix the valves and ensure their proper guidance during movement. Installed inside the cylinder head, it is located in the valve guide hole. Wear or damage to the valve guide can lead to unstable valve operation and poor sealing, thus affecting engine performance and combustion efficiency, and even causing engine failure. Currently, valve guides are often removed through welding or hammering. During hammering, the force can be significant, especially without proper control, which may cause cracks or localized deformation in the aluminum alloy or cast iron material of the cylinder head, affecting its structural strength and sealing performance. Utility Model Content

[0003] The purpose of this utility model is to provide a cylinder head valve guide disassembly and assembly tool to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cylinder head valve guide disassembly and assembly tool, comprising:

[0005] A supporting frame with connecting beams is fixed in the middle;

[0006] A lifting platform is vertically slidably placed inside a support frame. A jack is fixedly connected to the top of the lifting platform, and an installation tube for installing a top rod is fixedly connected to the bottom of the lifting platform. A reset component is fixedly connected between the lifting platform and the connecting beam.

[0007] A clamping assembly is placed below the lifting platform. The clamping assembly includes a movable slide. A fixed plate for adjusting the angle of the workpiece is adjustablely installed on the top of the movable slide. A clamping part is fixedly connected to the top of the fixed plate.

[0008] Preferably, the reset component is a spring, and the two ends of the spring are respectively fixedly connected to the connecting beam and the lifting platform.

[0009] Preferably, the bottom of the support frame is fixed with two support brackets.

[0010] Preferably, the clamping assembly further includes a base that is slidably disposed on the top of the support frame. Both sides of the top of the base are fixedly connected with inverted L-shaped limiting baffles. The bottom sides of the movable slide are slidably connected to the limiting baffles. The top of the base is threadedly connected with a lead screw, which is rotatably connected to the movable slide.

[0011] Preferably, the top of the movable slide is provided with an arc-shaped notch, and a rotating seat is slidably connected inside the arc-shaped notch. The rotating seat is concentric with the arc-shaped notch and has the same radius. A limiting bolt for pressing and fixing the rotating seat is threadedly connected to the outside of the movable slide.

[0012] Preferably, a limiting arc plate is fixedly connected to the side of the rotating seat, and an arc groove is provided on the inner wall of the movable slide, with the limiting arc plate slidably installed in the arc groove.

[0013] Preferably, the clamping part includes a fixed clamping block and a movable clamping block. The fixed clamping block is fixedly connected to one end of the top of the fixed plate, and the movable clamping block is slidably connected to the top of the fixed plate. A second lead screw is rotatably connected to one side of the movable clamping block, and the second lead screw is threadedly connected to the fixed plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the lifting platform is set with an H-shaped structure, and the notches at both ends are locked on the outside of the support frame, ensuring that the lifting platform can slide vertically up and down, making operation simple and stable; a reset component (spring) is fixed between the lifting platform and the connecting crossbeam, and after the jack extends to push out the valve guide, the spring can drive the lifting platform to automatically reset; the fixing plate in the clamping assembly can be adjusted and installed, and the angle of the workpiece can be flexibly adjusted by setting the rotating seat and the limiting arc plate, so that the position of the valve guide corresponds to the installation pipe; the movable slide is connected to the base by a screw, which can adjust the position of the workpiece in a direction perpendicular to the support frame, further improving the flexibility of operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connecting beam of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fixing plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the movable slide of this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting arc plate of this utility model.

[0020] In the diagram: 1. Support frame; 2. Connecting beam; 3. Lifting platform; 4. Spring; 5. Jack; 6. Support frame; 7. Mounting pipe; 8. Base; 9. Lead screw one; 10. Limiting baffle; 11. Moving slide; 12. Arc groove; 13. Arc notch; 14. Rotating seat; 15. Limiting arc plate; 16. Limiting bolt; 17. Fixing plate; 18. Fixing clamping block; 19. Moving clamping block; 20. Lead screw two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: a cylinder head valve guide disassembly and assembly tool, comprising: a support frame 1 with a connecting crossbeam 2 fixed to the middle by bolts;

[0023] The lifting platform 3 is vertically slidably placed inside the support frame 1. A jack 5 is fixedly connected to the top of the lifting platform 3, and an installation tube 7 for installing a top rod is fixedly connected to the bottom of the lifting platform 3. A reset component is fixedly connected between the lifting platform 3 and the connecting beam 2. The clamping assembly is placed below the lifting platform 3. The clamping assembly includes a movable slide 11. A fixed plate 17 for adjusting the workpiece angle is adjustablely installed on the top of the movable slide 11. A clamping part is fixedly connected to the top of the fixed plate 17.

[0024] It should be noted that in this embodiment, the support frame 1 is a U-shaped frame welded from metal plates, and the top view of the lifting platform 3 is an H-shaped structure. The notches at both ends are stuck on the outside of the support frame 1, so as to ensure that the lifting platform 3 can slide vertically up and down. When it is necessary to disassemble the cylinder head valve guide, the cylinder head is fixed by the clamping part and then the angle of the fixing plate 17 is adjusted so that the corresponding valve guide is aligned with the position of the mounting pipe 7. Then the corresponding push rod is installed in the mounting pipe 7. By driving the jack 5 to extend, the top of the jack 5 contacts the connecting beam 2. Under the reaction, the lifting platform 3 drives the push rod downward through the mounting pipe 7 to push out the valve guide.

[0025] In one embodiment, the reset element is a spring 4, and the two ends of the spring 4 are respectively fixed to the connecting beam 2 and the lifting platform 3.

[0026] It should be noted that in this embodiment, during the extension of the output end of the jack 5, its end contacts the connecting beam 2. Under the reaction of the force, the jack 5 drives the lifting platform 3 to move downward along the support frame 1. The lifting platform 3 stretches the spring 4. After disassembly, the jack 5 is reset, and the spring 4 drives the lifting platform 3 to move upward, so that the lifting platform 3 is reset upward.

[0027] In one embodiment, the bottom of the support frame 1 is fixedly connected to two support frames 6, and the clamping assembly also includes a base 8 that is slidably disposed on the top of the support frame 6. Both sides of the top of the base 8 are fixedly connected to the limiting baffles 10 with an inverted L-shaped structure. The bottom sides of the movable slide 11 are slidably connected to the limiting baffles 10. The top of the base 8 is threadedly connected to a lead screw 9, which is rotatably connected to the movable slide 11.

[0028] It should be noted that in this embodiment, the base 8 has an n-shaped structure. The side of the base 8 is threaded with bolts for fixing the position of the base 8. The two sides of the base 8 block the side of the support frame 6, so that the base 8 can slide along the length of the support frame 6 to adjust the position of the base 8. After the adjustment is completed, by rotating the lead screw 9, the end of the lead screw 9 drives the movable slide 11 to slide inside the limit baffle 10 under the action of the thread, thereby adjusting the workpiece in a direction perpendicular to the support frame 6.

[0029] In one embodiment, the top of the movable slide 11 is provided with an arc-shaped notch 13, and a rotating seat 14 is slidably connected inside the arc-shaped notch 13. The rotating seat 14 is concentric with the arc-shaped notch 13 and has the same radius. Two limiting bolts 16 for pressing and fixing the rotating seat 14 are symmetrically threaded on the outer side of the movable slide 11. A limiting arc plate 15 is fixedly connected to the side of the rotating seat 14. An arc-shaped groove 12 is provided on the inner wall of the movable slide 11, and the limiting arc plate 15 is slidably installed in the arc-shaped groove 12.

[0030] It should be noted that in this embodiment, a through groove is provided in the middle of the movable slide 11. The width of the fixed plate 17 is smaller than the width of the through groove. After the horizontal and vertical positions of the workpiece are adjusted, the limiting bolt 16 is loosened so that its end is separated from the rotating seat 14. By lifting or pressing the fixed plate 17 up or down, the top horizontal angle of the fixed plate 17 is made to form a certain angle. At this time, the fixed plate 17 drives the limiting arc plate 15 to slide in the arc groove 12 through the rotating seat 14. This allows the tilt angle of the mounting tube 7 to be adjusted. By rotating the limiting bolts 16 on both sides, the limiting bolts 16 press and fix the rotating seat 14 so that the valve guide at its top corresponds to the base 8, making it convenient to push the valve guide out with a vertical downward force.

[0031] In one embodiment, the clamping part includes a fixed clamping block 18 and a movable clamping block 19. The fixed clamping block 18 is fixedly connected to one end of the top of the fixed plate 17, and the movable clamping block 19 is slidably connected to the top of the fixed plate 17. A lead screw 20 is rotatably connected to one side of the movable clamping block 19, and the lead screw 20 is threadedly connected to the fixed plate 17.

[0032] It should be noted that, in this embodiment, when fixing the workpiece, the second lead screw 20 is rotated. Under the action of the thread, the second lead screw 20 drives the movable clamping block 19 to slide on the top of the fixed plate 17, thereby adjusting the distance between the fixed clamping block 18 and the movable clamping block 19. When the position is appropriate, the second lead screw 20 drives the movable clamping block 19 to move towards the fixed clamping block 18, thereby clamping and fixing the workpiece through the fixed clamping block 18 and the movable clamping block 19.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylinder head valve guide removal tool characterized by: include: A supporting frame (1) with a connecting beam (2) is fixed in the middle; The lifting platform (3) is vertically slidably placed inside the support frame (1). A jack (5) is fixedly connected to the top of the lifting platform (3), and an installation pipe (7) for installing the top rod is fixedly connected to the bottom of the lifting platform (3). A reset component is fixedly connected between the lifting platform (3) and the connecting beam (2). The clamping assembly is located below the lifting platform (3). The clamping assembly includes a movable slide (11). The top of the movable slide (11) is adjustablely mounted with a fixing plate (17) for adjusting the angle of the workpiece. The top of the fixing plate (17) is fixedly connected with a clamping part.

2. The cylinder head valve guide installation and removal tool as defined in claim 1 wherein: The reset component is a spring (4), and the two ends of the spring (4) are fixedly connected to the connecting beam (2) and the lifting platform (3) respectively.

3. The cylinder head valve guide installation and removal tool as defined in claim 1 wherein: The bottom of the support frame (1) is fixed with two support frames (6).

4. The cylinder head valve guide installation and removal tool as defined in claim 1 wherein: The clamping assembly also includes a base (8) that is slidably disposed on the top of the support frame (6). Both sides of the top of the base (8) are fixedly connected to the limiting baffles (10) with an inverted L-shaped structure. The bottom sides of the movable slide (11) are slidably connected to the limiting baffles (10). The top of the base (8) is threadedly connected to a lead screw (9), which is rotatably connected to the movable slide (11).

5. The cylinder head valve guide installation and removal tool of claim 4 wherein: The top of the movable slide (11) is provided with an arc-shaped notch (13), and a rotating seat (14) is slidably connected inside the arc-shaped notch (13). The rotating seat (14) is concentric with the arc-shaped notch (13) and has the same radius. The outer side of the movable slide (11) is threaded with a limiting bolt (16) for pressing and fixing the rotating seat (14).

6. The cylinder head valve guide disassembly and assembly tool according to claim 5, characterized in that: The rotating seat (14) is fixedly connected to a limiting arc plate (15) on its side, and the inner wall of the movable slide (11) is provided with an arc groove (12), and the limiting arc plate (15) is slidably installed in the arc groove (12).

7. The cylinder head valve guide disassembly and assembly tool according to claim 1, characterized in that: The clamping part includes a fixed clamping block (18) and a movable clamping block (19). The fixed clamping block (18) is fixedly connected to one end of the top of the fixed plate (17). The movable clamping block (19) is slidably connected to the top of the fixed plate (17). A second lead screw (20) is rotatably connected to one side of the movable clamping block (19). The second lead screw (20) is threadedly connected to the fixed plate (17).

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