Portable engine valve spring mounting device

Abstract

The utility model discloses a portable engine valve spring installation device which comprises a pressing plate, the pressing plate is connected with an air cylinder through a stud, a sliding groove is formed in the pressing plate, a threaded piece is inserted into the sliding groove, the upper portion of the threaded piece penetrates out of the sliding groove to be in threaded connection with a fixing nut, and a pressing bolt is inserted into the threaded piece. A compression tool is arranged between the threaded piece and the spring, the compression tool and the spring are downwards extruded by screwing the compression bolt, the spring is compressed into the air valve, after the device is connected with a screw hole of an air cylinder, one end of the spring is placed at the position of the air valve, the threaded piece is adjusted to be above the spring, and then the compression tool is placed between the spring and the threaded piece. The compression bolt is tightened, the compression bolt downwards extrudes the compression tool and the spring, and the spring is assembled into the air valve. The installation device is simple in structure, low in manufacturing cost, small in size, convenient to carry, capable of being installed by a single person and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a portable engine valve spring installation device. Background Art

[0002] The valve spring plays a vital role in the engine. Its main functions include: ensuring that the valve is closed at the appropriate time, maintaining the normal operation of the engine, ensuring that the valve can fit tightly with the valve seat or valve seat ring when it is closed, and overcoming the inertia force generated by the valve mechanism when the valve is opened. In addition, in high-speed engines, most use two valve springs with different inner and outer diameters installed concentrically to prevent resonance and improve working reliability. When installing the valve spring, since the spring is in an uncompressed state, it is necessary to compress the spring so that it is retracted into the cylinder head before the spring gland can be fixed to the cylinder head with a sealing bolt. At present, the valve spring assembly tool is mainly lever-type, which is large in size and weight. It is inconvenient to carry when going out for maintenance. It requires two people to complete the installation of the spring. In addition, it is time-consuming and laborious to compress the spring manually, and the operation is difficult, which reduces work efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a portable engine valve spring installation device, including a pressure plate, which is connected to the cylinder through a stud, and a slide groove is opened on the pressure plate, in which a threaded part is inserted, and the upper part of the threaded part passes through the slide groove and is threadedly connected to a fixing nut, and a clamping bolt is inserted into the threaded part, and a compression tooling is arranged between the threaded part and the spring. The compression tooling and the spring are compressed into the valve by twisting the clamping bolt.

[0004] Preferably, through holes are provided at the four corners of the pressure plate, and the positions of the through holes correspond to the positions of the screw holes on the cylinder.

[0005] Preferably, the studs are double-headed studs, and there are four studs, which pass through the through holes at the four corners of the pressure plate respectively.

[0006] Preferably, the upper end of the stud is fixed to the pressure plate via two supporting nuts.

[0007] Preferably, the slide groove is waist-shaped, and two slide grooves are provided.

[0008] Preferably, four threaded members may be provided, and the four threaded members all pass through the slide groove to connect the fixing nut and the clamping bolt.

[0009] Preferably, a threaded hole is opened in the center of the threaded member along the axial direction, the threaded member comprises a support block, a groove and a threaded column, and the upper end surface of the support block is connected to the threaded column.

[0010] Preferably, the support block is cylindrical, and the diameter of the support block is greater than the width of the slide groove.

[0011] Preferably, the outer wall of the threaded column is provided with an external thread structure.

[0012] Preferably, the upper end surface of the support block is provided with a groove, and two grooves are provided for inserting the upper part of the support block into the slide groove.

[0013] Technical effects and advantages of the utility model:

[0014] After connecting the device to the screw hole of the cylinder, place one end of the spring at the valve, adjust the threaded part to above the spring, then place the compression tooling between the spring and the threaded part, tighten the clamping bolt, and the clamping bolt squeezes the compression tooling and the spring downward to assemble the spring into the valve. The installation device has a simple structure, low manufacturing cost, and a small size, is easy to carry, can be installed by one person, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a portable engine valve spring installation device provided in an embodiment of the present application;

[0016] Figure 2 It is a front view of a portable engine valve spring installation device provided in an embodiment of the present application;

[0017] Figure 3 is a top view of a portable engine valve spring installation device provided in an embodiment of the present application;

[0018] Figure 4 It is a schematic diagram of the structure of the threaded parts in the portable engine valve spring installation device provided in an embodiment of the present application.

[0019] In the figure: 1. cylinder; 2. pressure plate; 21. slide groove; 3. stud; 4. support nut; 5. spring; 6. compression tooling; 7. clamping bolt; 8. fixing nut; 9. threaded part; 91. support block; 92. groove; 93. threaded column. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0021] See also Figures 1 to 3In this embodiment, a portable engine valve spring installation device is provided, which is used to install a spring 5 in the valve of a cylinder 1, including a pressure plate 2, and through holes are opened at the four corners of the pressure plate 2. The positions of the through holes correspond to the positions of the screw holes on the cylinder 1.

[0022] In this embodiment, a waist-shaped slide groove 21 is provided on the pressing plate 2, and two slide grooves 21 are provided.

[0023] In this embodiment, the pressure plate 2 is connected to the cylinder 1 through a stud 3. The stud 3 is a double-headed stud. There are four studs 3, which pass through the through holes at the four corners of the pressure plate 2 respectively. The upper end of the stud 3 is fixed to the pressure plate 2 through two support nuts 4. The two support nuts 4 are both installed on one stud 3, and the two support nuts 4 are respectively located on the upper and lower sides of the pressure plate 2, thereby forming a self-locking structure, which is convenient for adjusting the height of the pressure plate 2.

[0024] Furthermore, a threaded member 9 is inserted in the slide groove 21, and the upper part of the threaded member 9 passes through the slide groove 21. The threaded member 9 is threadedly connected to the fixing nut 8, and the fixing nut 8 is located above the pressure plate 2. The threaded member 9 is inserted with a clamping bolt 7. A compression tooling 6 is provided between the threaded member 9 and the spring 5. The clamping bolt 7 is rotated to move downward along the threaded member 9. When the clamping bolt 7 contacts the compression tooling 6, the compression tooling 6 and the spring 5 are squeezed downward to compress the spring 5 into the valve.

[0025] In this embodiment, four threaded members 9 may be provided, and all four threaded members 9 pass through the slide groove 21 to connect the fixing nut 8 and the clamping bolt 7. By adjusting the position of the threaded member 9 in the slide groove 21, the assembly of the four springs 5 ​​can be completed in one installation.

[0026] See also Figure 4 As shown, a threaded hole is axially provided at the center of the threaded member 9, and the threaded member 9 includes a support block 91, a groove 92 and a threaded column 93. The support block 91 is cylindrical, and the diameter of the support block 91 is larger than the width of the slide groove 21. The upper end face of the support block 91 is connected to the threaded column 93, and the outer wall of the threaded column 93 is provided with an external thread structure. A groove 92 is provided on the upper end face of the support block 91, and two grooves 92 are provided, which are convenient for inserting the upper part of the support block 91 into the slide groove 21. After the threaded column 93 is tightened with the fixing nut 8, the bottom end face of the groove 92 contacts with the lower end face of the pressure plate 2, and the friction between the threaded column 93 and the pressure plate 2 makes the threaded member 9 relatively fixed to the pressure plate 2. Unscrewing the fixing nut 8 and pulling the fixing nut 8 or the threaded member 9 can adjust the position of the threaded member 9 in the slide groove 21, which can be adjusted according to the installation position of the spring 5.

[0027] The working principle of the utility model is:

[0028] When in use, after connecting the device to the screw hole of the cylinder 1, place one end of the spring 5 at the valve, adjust the threaded part 9 to be above the spring 5, and then place the compression tool 6 between the spring 5 and the threaded part 9, tighten the clamping bolt 7, and the clamping bolt 7 squeezes the compression tool 6 and the spring 5 downward to assemble the spring 5 into the valve. The installation device has a simple structure, low manufacturing cost, small size, and is easy to carry. It can be installed by one person and is easy to operate.

[0029] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A portable engine valve spring installation device, characterized in that: The pressure plate (2) is connected to the cylinder (1) via a stud (3), a slide groove (21) is provided on the pressure plate (2), a threaded member (9) is inserted into the slide groove (21), the upper part of the threaded member (9) passes through the slide groove (21) and is threadedly connected to a fixing nut (8), and a clamping bolt (7) is inserted into the threaded member (9); A compression tool (6) is provided between the threaded member (9) and the spring (5), and the spring (5) is compressed into the valve by tightening the compression tool (6) and the spring (5) downwardly by screwing the clamping bolt (7).

2. A portable engine valve spring installation device according to claim 1, characterized in that: Through holes are provided at the four corners of the pressure plate (2), and the positions of the through holes correspond to the positions of the screw holes on the cylinder (1).

3. A portable engine valve spring installation device according to claim 1, characterized in that: The studs (3) are double-headed studs, and there are four studs (3) which pass through the through holes at the four corners of the pressing plate (2) respectively.

4. A portable engine valve spring installation device according to claim 3, characterized in that: The upper end of the stud (3) is fixed to the pressing plate (2) via two supporting nuts (4).

5. The portable engine valve spring installation device according to claim 1, characterized in that: The slide groove (21) is waist-shaped, and two slide grooves (21) are provided.

6. A portable engine valve spring installation device according to claim 1, characterized in that: The number of threaded members (9) may be four, and the four threaded members (9) all pass through the slide groove (21) to connect the fixing nut (8) and the clamping bolt (7).

7. A portable engine valve spring installation device according to claim 6, characterized in that: A threaded hole is provided in the center of the threaded member (9) along the axial direction. The threaded member (9) comprises a support block (91), a groove (92) and a threaded column (93). The upper end surface of the support block (91) is connected to the threaded column (93).

8. A portable engine valve spring installation device according to claim 7, characterized in that: The support block (91) is cylindrical, and the diameter of the support block (91) is greater than the width of the slide groove (21).

9. A portable engine valve spring installation device according to claim 8, characterized in that: The outer wall of the threaded column (93) is provided with an external thread structure.

10. A portable engine valve spring installation device according to claim 9, characterized in that: The upper end surface of the support block (91) is provided with a groove (92), and two grooves (92) are provided for inserting the upper part of the support block (91) into the slide groove (21).

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