Disassembling and assembling tool for valve spring lock clamp

Abstract

The utility model discloses a valve spring lock clamp disassembling and assembling tool which comprises a pressing plate assembly, hole sites corresponding to valve ejector rods are formed in the pressing plate assembly according to the number of valves, and the pressing plate assembly is placed on a valve spring seat. The fixed guide piece is mounted at the corresponding position of the cylinder cover and is positioned below the pressing plate assembly; the handle assembly is located above the pressing plate assembly, is in threaded fit with the fixing guide piece and is used for applying pressure to the pressing plate assembly so as to press the valve spring, the valve spring lock clamp disassembling and assembling tool can achieve simultaneous installation of a plurality of valve lock clamps, the input cost is low, time and labor are saved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine assembly, in particular to a disassembly and assembly tool for valve spring retainers. Background Technique

[0002] The valve spring retainer is used to fix the valve stem and the valve spring seat, which can prevent the valve spring retainer or the rotating mechanism from falling into the cylinder, and make the valve return under the action of the spring force. During the assembly process of the engine, it is necessary to assemble the valve spring retainer. During the disassembly and assembly process of the valve spring retainer, it is necessary to compress the valve spring to a certain position first before the valve spring can be installed or removed.

[0003] At present, in the assembly method of the valve spring retainer, there are mainly the following disadvantages: 1. The input cost of an automatic assembly system such as a hydraulic assembly system is relatively high; 2. A simple pressing tool such as a lever-type pressing tool can only perform a pressing operation on a single valve at a time, which is time-consuming and laborious, and has a certain degree of danger. Moreover, during the installation process, the operator needs to manually maintain the stability of pressing the spring, and the installation difficulty is relatively high. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a disassembly and assembly tool for valve spring retainers, which can realize the simultaneous installation of multiple valve spring retainers, has a low input cost, saves time and effort, and can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A disassembly and assembly tool for valve spring retainers, comprising:

[0006] A pressing plate assembly, holes corresponding to the valve push rods are arranged on the pressing plate assembly according to the number of valves, and it is placed on the valve spring seat;

[0007] A fixed guiding member, which is installed at the corresponding position of the cylinder head and is located below the pressing plate assembly;

[0008] A handle assembly, which is located above the pressing plate assembly and is in threaded cooperation with the fixed guiding member, and is used to apply pressure to the pressing plate assembly so as to compress the valve spring.

[0009] As a preferred technical scheme of the utility model, the pressing plate assembly includes a flat plate, round holes and waist-shaped openings. The round holes are arranged in the middle of the flat plate. The number of the waist-shaped openings is at least two, and they are symmetrically distributed on the flat plate. The positions of the waist-shaped openings correspond to the positions of the valve push rods.

[0010] As a preferred technical scheme of the utility model, the number of the waist-shaped openings is four, and the four waist-shaped openings are evenly distributed around the flat plate.

[0011] As a preferred technical solution of the present utility model, the fixed guide member includes a seat body and a stud. Threaded holes are symmetrically arranged at both ends of the seat body. The stud is fixed at the middle position of the seat body, and the stud passes through the round hole.

[0012] As a preferred technical solution of the present utility model, the handle assembly includes a handle and a sleeve. The number of handles is two, and the two handles are symmetrically fixed on the outer side surface of the sleeve. An internal thread adapted to the external thread of the stud is machined on the inner side surface of the sleeve.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: (1) It can disassemble and assemble the valve spring retainers of multiple intake and exhaust valves simultaneously, with fast disassembly and assembly, saving working time and improving work efficiency; (2) It can use an appropriate handle length to solve the problem of large spring force when disassembling and assembling multiple valve springs simultaneously, with convenient operation; (3) The thread design prevents the tool from accidentally rebounding due to the spring force, providing high safety and stability for this set of tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the installation state of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the handle assembly;

[0017] Figure 4 is a schematic diagram of the structure of the pressing plate assembly;

[0018] Figure 5 is a schematic diagram of the structure of the fixed guide member.

[0019] In the figure: 1 handle assembly, 11 handle, 12 sleeve, 2 pressing plate assembly, 21 flat plate, 22 round hole, 23 kidney-shaped opening, 3 fixed guide member, 31 seat body, 32 threaded hole, 33 stud. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments (for the convenience of description and understanding, the above is described with the upper side of Figure 2 being the upper side). Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5, the present utility model provides a technical solution: a valve spring retainer disassembly and assembly tool, including a pressing plate assembly 2, a fixed guide member 3 and a handle assembly 1;

[0022] The pressing plate assembly 2 includes a flat plate 21, a circular hole 22 and a waist-shaped opening 23. The circular hole 22 is arranged in the middle position of the flat plate 21. The number of waist-shaped openings 23 is at least two and is symmetrically distributed on the flat plate 21. The position of the waist-shaped opening 23 corresponds to the position of the valve tappet. In this embodiment, taking a four-valve cylinder head as an example, the corresponding number of waist-shaped openings 23 is four, and the four waist-shaped openings 23 are evenly distributed around the flat plate 21, and the valve springs at the four valve tappets can be compressed simultaneously;

[0023] The fixed guide member 3 is located below the pressing plate assembly 2 and includes a seat body 31 and a stud 33. Threaded holes 32 are symmetrically arranged at both ends of the seat body 31. The stud 33 is fixed in the middle position of the seat body 31. The stud 33 passes through the circular hole 22, and the fixed guide member 3 is fixed at the corresponding position of the cylinder head by bolts passing through the threaded holes 32, and the stud 33 plays a guiding role.

[0024] The handle assembly 1 is located above the pressing plate assembly 2 and includes a handle 11 and a sleeve 12. The number of handles 11 is two, and the two handles 11 are symmetrically fixed on the outer side surface of the sleeve 12. The inner side surface of the sleeve 12 is processed with an internal thread adapted to the external thread of the stud 33. The sleeve 12 is threadedly connected to the outer side surface of the stud 33. By setting the handle 11, it is convenient for the worker to press down the flat plate 21, and the threaded torque is used to compress the valve spring.

[0025] When in use: first, fix the seat body in the fixed guide member 3 at the corresponding position of the cylinder head by bolts, then pass the pressing plate assembly 2 through the stud 33 of the fixed guide member 3 through the circular hole 22, and place it on the corresponding positions of the four valve tappets according to the four waist-shaped openings 23, so that the flat plate 21 is placed on the valve spring seat. The sleeve 12 in the handle assembly 1 is threadedly connected to the outer side surface of the stud 33. Rotate the handle 11 to apply pressure to the flat plate 21 by means of the threaded torque and compress the valve spring to a proper position. At this time, due to the effect of the thread, the worker does not need to manually maintain the stability of the tool. After installing the valve retainer, rotate the handle 11 in the reverse direction to remove the valve spring retainer disassembly and assembly tool, and complete the installation of the valve retainer.

[0026] The present utility model can realize the simultaneous compression of the corresponding valve tappets by replacing the pressing plate assembly 2 according to the change of the number of cylinder head valves. The whole disassembly and assembly tool has a low manufacturing cost, is convenient to operate, saves time and effort, and greatly improves the use convenience.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A valve spring retainer disassembly and assembly tool, characterized in that, Comprising: A pressing plate assembly (2), with hole positions corresponding to valve tappets set on the pressing plate assembly (2) according to the number of valves, and placed on the valve spring seat; A fixed guide (3), installed at the corresponding position of the cylinder head and located below the pressing plate assembly (2); A handle assembly (1), located above the pressing plate assembly (2) and in threaded cooperation with the fixed guide (3), for applying pressure to the pressing plate assembly (2) to compress the valve spring.

2. The valve spring retainer disassembly and assembly tool according to claim 1, wherein: The pressing plate assembly (2) includes a flat plate (21), round holes (22) and waist-shaped openings (23). The round holes (22) are arranged at the middle position of the flat plate (21). The number of the waist-shaped openings (23) is at least two and symmetrically distributed on the flat plate (21). The positions of the waist-shaped openings (23) correspond to the positions of the valve tappets.

3. The valve spring retainer disassembly and assembly tool according to claim 2, characterized in that: The number of the waist-shaped openings (23) is four, and the four waist-shaped openings (23) are evenly distributed around the flat plate (21).

4. The valve spring retainer disassembly and assembly tool according to claim 2, wherein: The fixed guide (3) includes a seat body (31) and a stud (33). Threaded holes (32) are symmetrically arranged at both ends of the seat body (31). The stud (33) is fixed at the middle position of the seat body (31), and the stud (33) passes through the round holes (22).

5. The valve spring retainer disassembly and assembly tool according to claim 4, wherein: The handle assembly (1) includes handles (11) and a sleeve (12). The number of the handles (11) is two, and the two handles (11) are symmetrically fixed on the outer side surface of the sleeve (12). Internal threads adapted to the external threads of the stud (33) are machined on the inner side surface of the sleeve (12).

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