Special tool for assembling valve mechanism of engine

Abstract

The utility model provides a special tool for assembling an engine valve mechanism, which comprises an upper fixing rod, the left side of the top of the upper fixing rod is fixedly connected with a fixing column, the fixing column is internally provided with a cavity, the cavity is internally provided with a pushing mechanism, the pushing mechanism comprises a pushing rod, a connecting rod and a pressure spring, the top of the pushing rod penetrates through the cavity and extends to the top of the fixing column, the top of the connecting rod is fixedly connected to the bottom of the pushing rod, the surface of the connecting rod is sleeved with the compressed spring, the top of the compressed spring is fixedly connected to the bottom of the connecting rod, and the bottom of the compressed spring is fixedly connected to the inner side of the cavity. Through the pushing mechanism, when the valve spring is compressed, a pushing rod is pressed downwards, the pushing rod drives a connecting rod to move downwards, an extrusion block is pushed through the pushing rod to compress the valve spring, installation by workers is facilitated, and through arrangement of a friction pad, downward pressing by the workers is facilitated, and the pressing friction force is increased.

Description

Technical Field

[0001] The utility model relates to a special tool for assembling an engine valve train, belonging to the technical field of special tools for assembly. Background Art

[0002] Special tools are required when installing the engine valve mechanism, mainly because these tools can help ensure the accuracy and safety of the installation. When installing the pneumatic spring, in order to place the pneumatic spring offset, the valve spring is not installed correctly, which may cause the spring to fail and affect the normal operation of the valve.

[0003] A Chinese patent publication (publication number: CN 220395788 U) discloses an engine valve mechanism, comprising a stepper motor and a valve assembly located below the stepper motor, wherein the stepper motor comprises a housing, a stator and a rotor mounted in the housing, the rotor being mounted in the stator, a stepper motor output shaft being mounted in the stepper motor, a threaded end of the stepper motor output shaft being connected to the rotor via a thread, a valve displacement sensor being mounted on the feed end, the valve assembly comprising a valve spring, a valve guide, a valve, a valve spring seat and a cylinder head, the valve spring seat being mounted at the upper end of the valve, the stepper motor being mounted above the cylinder head, the valve guide being mounted in the cylinder head, the valve being installed in the valve guide through, a spring groove being provided on the cylinder head at a position surrounding the valve guide, the valve spring being mounted between the valve spring seat and the spring groove, the upper end of the valve spring being in contact with the valve spring seat, and a valve seat ring being inlaid on the cylinder head at a position in contact with the lower end of the valve;

[0004] However, when installing the pneumatic spring, due to the large elastic force of the pneumatic spring, it is inconvenient for the staff to operate, and other auxiliary tools are usually used for installation. However, when installing with other tools, the pneumatic spring is easily damaged, affecting the normal use of the valve mechanism.

[0005] Therefore, a special tool for assembling an engine valve train is proposed. Utility Model Content

[0006] In view of this, the present invention provides a special tool for assembling an engine valve train to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the present utility model is achieved as follows: a special tool for assembling an engine valve mechanism, comprising an upper fixing rod, a fixing column fixedly connected to the left side of the top of the upper fixing rod, a cavity being opened inside the fixing column, a pushing mechanism being provided inside the cavity, the pushing mechanism comprising a pushing rod, a connecting rod and a compression spring, the top of the pushing rod extending through the cavity to the top of the fixing column, the top of the connecting rod fixedly connected to the bottom of the pushing rod, the compression spring being sleeved on the surface of the connecting rod, the top of the compression spring fixedly connected to the bottom of the connecting rod, the bottom of the compression spring fixedly connected to the inner side of the cavity, and the bottom of the connecting rod extending through to the bottom of the cavity.

[0008] Further preferably, a friction pad is fixedly connected to the top of the push rod, and the material of the friction pad is rubber.

[0009] Further preferably, the bottom of the connecting rod is threadedly connected to a contact block, and the bottom of the upper fixing rod is movably connected to a lower fixing rod.

[0010] Further preferably, a placement slot is provided inside the lower fixing rod, and the bottom of the upper fixing rod is movably connected to the inside of the placement slot.

[0011] Further preferably, a bolt is provided on the right side of the lower fixing rod, and the left side of the bolt passes through the lower fixing rod and extends to the interior of the upper fixing rod.

[0012] Further preferably, a fixing groove is provided on the surface of the upper fixing rod, and the left side of the bolt is movably connected to the inside of the fixing groove.

[0013] Further preferably, a connecting block is fixedly connected to the left side of the lower fixing rod, and a rotating screw is connected to the internal thread of the connecting block.

[0014] Further preferably, the top of the rotating screw is fixedly connected to an extrusion block, and the top of the rotating screw is fixedly connected to a rotating knob.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model uses a pushing mechanism. When compressing the valve spring, the pushing rod is pressed downward, and the pushing rod drives the connecting rod to move downward. The pushing rod pushes the extrusion block to compress the valve spring, which is convenient for the staff to install. By providing a friction pad, it is convenient for the staff to press downward and increase the pressing friction.

[0017] 2. The utility model uses the lower fixing rod to facilitate the staff to adjust the length of the upper fixing rod and the lower fixing rod when installing the gas distribution mechanism on different engines, and facilitates the staff to operate. By setting the fixing groove, the connecting rod can be accurately inserted into the inside of the fixing groove when plugging and fixing.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional front view structure of the utility model;

[0021] Figure 2 This is a schematic cross-sectional structural diagram of a fixed column of the present utility model;

[0022] Figure 3 This is a schematic diagram of the fixing groove structure of the utility model;

[0023] Figure 4 This is a schematic structural diagram of the lower fixing rod of the present utility model.

[0024] Figure numerals: 1. Upper fixing rod; 2. Fixing column; 3. Cavity; 4. Pushing mechanism; 401. Pushing rod; 402. Connecting rod; 403. Compression spring; 5. Friction pad; 6. Contact block; 7. Lower fixing rod; 8. Placement slot; 9. Bolt; 10. Fixing slot; 11. Connecting block; 12. Rotating screw; 13. Extrusion block; 14. Rotating knob. DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figure 1-2 As shown, the embodiment of the present invention provides a special tool for assembling an engine valve mechanism, including an upper fixing rod 1, a fixing column 2 is fixedly connected to the left side of the top of the upper fixing rod 1, a cavity 3 is opened inside the fixing column 2, and a pushing mechanism 4 is provided inside the cavity 3, the pushing mechanism 4 includes a pushing rod 401, a connecting rod 402 and a compression spring 403, the top of the pushing rod 401 passes through the cavity 3 and extends to the top of the fixing column 2, the top of the connecting rod 402 is fixedly connected to the bottom of the pushing rod 401, the compression spring 403 is sleeved on the surface of the connecting rod 402, the top of the compression spring 403 is fixedly connected to the bottom of the connecting rod 402, the bottom of the compression spring 403 is fixedly connected to the inner side of the cavity 3, the bottom of the connecting rod 402 passes through the bottom of the cavity 3, the top of the pushing rod 401 is fixedly connected to the friction pad 5, the material of the friction pad 5 is rubber, the bottom of the connecting rod 402 is threadedly connected to the contact block 6, and the bottom of the upper fixing rod 1 is movably connected to the lower fixing rod 7.

[0029] Through the pushing mechanism 4, when compressing the valve spring, the pushing rod 401 is pressed downward, and the pushing rod 401 drives the connecting rod 402 to move downward. The pushing rod 401 pushes the extrusion block 13 to compress the valve spring, which is convenient for the staff to install. By setting the friction pad 5, it is convenient for the staff to press downward and increase the pressing friction.

[0030] Example 2

[0031] like Figure 2-4 As shown, in one embodiment, a placement groove 8 is provided inside the lower fixing rod 7, and the bottom of the upper fixing rod 1 is movably connected to the inside of the placement groove 8. A bolt 9 is provided on the right side of the lower fixing rod 7, and the left side of the bolt 9 penetrates the lower fixing rod 7 and extends to the inside of the upper fixing rod 1. A fixing groove 10 is provided on the surface of the upper fixing rod 1, and the left side of the bolt 9 is movably connected to the inside of the fixing groove 10. The left side of the lower fixing rod 7 is fixedly connected to a connecting block 11, and the internal thread of the connecting block 11 is connected to a rotating screw 12, the top of the rotating screw 12 is fixedly connected to an extrusion block 13, and the top of the rotating screw 12 is fixedly connected to a rotating button 14.

[0032] Through the lower fixing rod 7, when installing the air distribution mechanism of different engines, it is convenient for the staff to adjust the length of the upper fixing rod 1 and the lower fixing rod 7, which is convenient for the staff to operate. By setting the fixing groove 10, the connecting rod 402 can be accurately inserted into the inside of the fixing groove 10 when plugging and fixing.

[0033] When the utility model is working: first, the bolt 9 is disassembled according to the size of the engine casing, and the length of the upper fixing rod 1 and the lower fixing rod 7 is adjusted after disassembly. After the adjustment is completed, the bolt 9 is reinserted to fix it. After fixing, the rotating knob 14 is turned, and the rotating knob 14 drives the rotating screw 12 to rotate. The rotating screw 12 pushes the extrusion block 13 to move upward to fix the upper fixing rod 1 and the lower fixing rod 7. After the installation is completed, the push rod 401 is pressed downward, and the push rod 401 drives the connecting rod 402 to move downward. While the connecting rod 402 moves downward, the compression spring 403 is compressed, so that the connecting rod 402 pushes the contact block 6 to move downward. The compression of the compression spring 403 is convenient for the staff to assemble the gas distribution mechanism.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A special tool for assembling an engine valve train, comprising an upper fixing rod (1), characterized in that: The left side of the top of the upper fixed rod (1) is fixedly connected to a fixed column (2), a cavity (3) is opened inside the fixed column (2), a pushing mechanism (4) is provided inside the cavity (3), and the pushing mechanism (4) includes a pushing rod (401), a connecting rod (402) and a compression spring (403). The top of the pushing rod (401) passes through the cavity (3) and extends to the top of the fixed column (2). The top of the connecting rod (402) is fixedly connected to the bottom of the pushing rod (401). The compression spring (403) is sleeved on the surface of the connecting rod (402). The top of the compression spring (403) is fixedly connected to the bottom of the connecting rod (402). The bottom of the compression spring (403) is fixedly connected to the inner side of the cavity (3), and the bottom of the connecting rod (402) passes through to the bottom of the cavity (3).

2. The engine valve train assembly tool according to claim 1, characterized in that: The top of the push rod (401) is fixedly connected with a friction pad (5), and the material of the friction pad (5) is rubber.

3. The engine valve train assembly tool according to claim 1, characterized in that: The bottom of the connecting rod (402) is threadedly connected to a contact block (6), and the bottom of the upper fixing rod (1) is movably connected to a lower fixing rod (7).

4. The engine valve train assembly tool according to claim 3, characterized in that: A placement groove (8) is provided inside the lower fixing rod (7), and the bottom of the upper fixing rod (1) is movably connected to the inside of the placement groove (8).

5. The engine valve train assembly tool according to claim 4, characterized in that: A bolt (9) is provided on the right side of the lower fixing rod (7), and the left side of the bolt (9) passes through the lower fixing rod (7) and extends to the interior of the upper fixing rod (1).

6. The engine valve train assembly tool according to claim 5, characterized in that: A fixing groove (10) is provided on the surface of the upper fixing rod (1), and the left side of the bolt (9) is movably connected to the inside of the fixing groove (10).

7. The engine valve train assembly tool according to claim 5, characterized in that: The left side of the lower fixed rod (7) is fixedly connected to a connecting block (11), and the internal thread of the connecting block (11) is connected to a rotating screw (12).

8. The engine valve train assembly tool according to claim 7, characterized in that: The top of the rotating screw (12) is fixedly connected to an extrusion block (13), and the top of the rotating screw (12) is fixedly connected to a rotating knob (14).

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