Welding push rod

Abstract

The utility model discloses a welding push rod, which relates to the technical field of welding push rods, and comprises a push rod body, a connecting part and a ball head assembly, one end of the connecting part is fixedly connected to the rear end of the push rod body, and the rear end of the outer wall of the ball head assembly is arranged at the front end of the push rod body. The push rod body and the ball head assembly are connected in a threaded mode, after screwing is completed, the annular clamping sleeve is arranged at the front end of the push rod body, and the annular clamping sleeve is clamped with the rubber clamping ball in the connecting base through the semicircular groove in an extruding mode, so that the stability of connection between the push rod body and the ball head assembly is improved; and meanwhile, disassembly and replacement between the installation head and the installation head are facilitated, four fixing columns are arranged on the outer wall of the installation head, and second steel balls are arranged in the fixing columns, so that the first steel balls drive the second steel balls to roll in the moving process of the first ball sockets, the outer walls of the first steel balls are positioned, and the first steel balls are prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of welding push rods, and particularly relates to a welding push rod. Background Technique

[0002] With the wide application of the four-valve technology of diesel engines, the mechanical load of the valve train is increasing. The introduction of engine braking technology further increases the load of the valve train. Therefore, further improving the reliability of the valve train has become a key concern. For diesel engines upgraded from two valves to four valves, in order to reduce the upgrade cost, most of them retain the valve train with a side-mounted camshaft. Therefore, the welding push rod, as an important component of the side-mounted camshaft type valve train, still has a relatively wide application in medium and heavy-duty diesel engines. The welding push rod consists of a rod body, a ball head and a ball socket, and is usually made of steel. Among them, the ball head is used in cooperation with the ball socket of the valve tappet, and the ball socket is used in cooperation with the ball head of the valve rocker arm. The following problems exist in the prior art:

[0003] In the existing welding push rod, the ball head part is usually integrally arranged with the rod body, resulting in serious damage to the ball head part after long-term use, and the need to replace the entire rod body, thus causing waste of resources. Secondly, due to insufficient welding strength and low tensile strength of the existing welding push rod, some steel balls are likely to fall off after being installed on the machine, and the ball seat is prone to fracture during use, shortening the service life. Content of the Utility Model

[0004] The utility model provides a welding push rod to solve the problems existing in the above background technique.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A welding push rod includes a push rod body, a connecting part and a ball head assembly. One end of the connecting part is fixedly connected to the rear end of the push rod body, and the rear end of the outer wall of the ball head assembly is arranged at the front end of the push rod body.

[0007] The further improvement of the technical solution of the utility model lies in that: the ball head assembly includes a mounting head, a connecting seat, a first steel ball, four fixing columns and a threaded column. A first ball socket is opened at the front end of the mounting head, and the outer wall of the first steel ball is fitted and connected inside the first ball socket. The rear end of the mounting head is fixedly connected to the front end of the connecting seat, and the front end of the threaded column is fixedly connected to the center of the rear end of the connecting seat.

[0008] The further improvement of the technical solution of the utility model lies in that: the outer parts of the four fixing columns are respectively fixedly connected to the front side of the outer wall of the mounting head in a circumferential array, and the opposite surfaces of the fixing columns penetrate into the first ball socket.

[0009] A further improvement of the technical solution of the present utility model lies in that: a threaded groove is provided at the front end of the push rod body, the outside of the threaded column is threadedly connected to the inside of the threaded groove, an annular clamping sleeve is fixedly connected to the outer wall of the push rod body near the front side of the threaded groove, and a plurality of semi-circular grooves are annularly arranged on the outer wall of the annular clamping sleeve.

[0010] A further improvement of the technical solution of the present utility model lies in that: an annular clamping groove with an outer diameter equal to that of the annular clamping sleeve is provided at the rear end of the connecting seat, and rubber clamping balls with the same number as the semi-circular grooves are annularly arranged on the inner wall of the annular clamping groove.

[0011] A further improvement of the technical solution of the present utility model lies in that: the connecting seat is sleeved on the outer wall of the annular clamping sleeve through the annular clamping groove, and the outer surfaces of a plurality of the rubber clamping balls are respectively clamped with the inner walls of a plurality of the semi-circular grooves.

[0012] A further improvement of the technical solution of the present utility model lies in that: ball sockets II are provided inside the four fixing columns and inside the annular clamping groove, and second steel balls are fitted and connected inside the four ball sockets II.

[0013] A further improvement of the technical solution of the present utility model lies in that: the outer surface of the second steel ball abuts against the inner surface of the first steel ball.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0015] 1. The present utility model provides a welding push rod, which adopts the cooperation among the push rod body, the connecting part and the ball head assembly. The push rod body and the ball head assembly are connected by means of threads. After the screwing is completed, through the annular clamping sleeve provided at the front end of the push rod body, the annular clamping sleeve is squeezed and clamped with the rubber clamping balls in the connecting seat through the semi-circular grooves, thereby increasing the connection stability between the push rod body and the ball head assembly, and at the same time facilitating the disassembly and replacement between the two. It solves the problem that the ball head part in the existing welding push rod is usually integrally arranged with the rod body, resulting in serious damage to the ball head part after long-term use and the need to replace the entire rod body, thus causing waste of resources. It achieves the beneficial effect of facilitating the installation and disassembly between the ball head assembly and the push rod body, avoiding replacing the entire rod body when replacing the ball head assembly, and saving resources.

[0016] 2. The present utility model provides a welding push rod, which adopts the cooperation between the push rod body and the ball head assembly. Through the four fixing columns arranged on the outer wall of the mounting head and the second steel balls arranged inside the fixing columns, when the first steel ball moves in the first ball socket, it drives the second steel balls to roll, playing a role in positioning the outer wall of the first steel ball and preventing the first steel ball from falling off. This solves the problem that in the existing welding push rods, due to insufficient welding strength and low tensile strength, the steel balls are prone to fall off after some push rods are installed, shortening the service life, and achieves the beneficial effect of preventing the steel balls from easily falling off and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the welding push rod of the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the ball head assembly of the present utility model;

[0019] Figure 3 is a partially enlarged three-dimensional structural schematic diagram of A of the present utility model;

[0020] Figure 4 is a three-dimensional structural connection schematic diagram of the ball head assembly and the push rod body of the present utility model;

[0021] Figure 5 is a three-dimensional structural sectional schematic diagram of the ball head assembly of the present utility model.

[0022] In the figure: 1. Push rod body; 101. Thread groove; 11. Annular retaining sleeve; 110. Semi-circular groove; 2. Connecting part; 3. Ball head assembly; 31. Mounting head; 310. First ball socket; 32. Connecting seat; 320. Annular clamping groove; 321. Rubber clamping ball; 33. First steel ball; 34. Fixing column; 340. Second ball socket; 341. Second steel ball; 35. Threaded column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments:

[0024] As Figure 1 shown, the present utility model provides a welding push rod, including a push rod body 1, a connecting part 2 and a ball head assembly 3. One end of the connecting part 2 is fixedly connected to the rear end of the push rod body 1, and the rear end of the outer wall of the ball head assembly 3 is arranged at the front end of the push rod body 1;

[0025] The push rod body 1, the connecting part 2 and the ball head assembly 3 are provided. The front end of the push rod body 1 is connected and fixed to the ball head assembly 3 by means of threads, which is convenient for disassembling and replacing the ball head assembly 3.

[0026] AsFigure 2 As shown in the figure, the present utility model provides a technical solution for a welding push rod: The ball head assembly 3 includes a mounting head 31, a connecting seat 32, a first steel ball 33, four fixing columns 34 and a threaded column 35. A ball socket one 310 is provided at the front end of the mounting head 31. The outer wall of the first steel ball 33 is fitted and connected inside the ball socket one 310. The rear end of the mounting head 31 is fixedly connected to the front end of the connecting seat 32. The front end of the threaded column 35 is fixedly connected to the center of the rear end of the connecting seat 32. The outer parts of the four fixing columns 34 are respectively fixedly connected to the front side of the outer wall of the mounting head 31 in a circumferential array, and the opposite surfaces of the fixing columns 34 penetrate into the inside of the ball socket one 310. By providing four fixing columns 34 on the outer wall of the mounting head 31, it plays a role in supporting the first steel ball 33.

[0027] As Figure 3 As shown in the figure, the present utility model provides a technical solution for a welding push rod: A threaded groove 101 is provided at the front end of the push rod body 1. The outside of the threaded column 35 is threadedly connected to the inside of the threaded groove 101. An annular collar 11 is fixedly connected to the outer wall of the push rod body 1 near the front side of the threaded groove 101. A number of semi-circular grooves 110 are circumferentially arrayed on the outer wall of the annular collar 11. By providing the annular collar 11 at the connection end of the push rod body 1, it plays an effect of positioning during connection.

[0028] As Figure 4 As shown in the figure, the present utility model provides a technical solution for a welding push rod: An annular groove 320 equal to the outer diameter of the annular collar 11 is provided at the rear end of the connecting seat 32. Rubber snap balls 3 about the same number as the semi-circular grooves 110 are circumferentially arrayed on the inner wall of the annular groove 320. The connecting seat 32 is sleeved on the outer wall of the annular collar 11 through the annular groove 320. When the ball head assembly 3 is connected to the push rod body 1, the connecting seat 32 is sleeved on the outer wall of the annular collar 11 through the annular groove, increasing the connection strength at the interface between the mounting head 31 and the push rod body 1, making it not easy to break during use. The outer surfaces of a number of rubber snap balls 3 are respectively engaged with the inner walls of a number of semi-circular grooves 110. Using the elasticity of the rubber snap balls 3 to squeeze and snap into the semi-circular grooves 110 on the outer wall of the annular collar 11, increasing the stability of the connection between the ball head assembly 3 and the push rod body 1.

[0029] As Figure 5 As shown in the figure, the present utility model provides a technical solution for a welding push rod: Ball sockets two 340 are provided inside the four fixing columns 34 and together with the inside of the annular groove 320. Second steel balls 341 are fitted and connected inside the four ball sockets two 340. The outer surface of the second steel ball 341 abuts against the inner surface of the first steel ball 33. When the first steel ball 33 rotates in the ball socket one 310, it drives the second steel ball 341 to roll, playing a role in positioning the outer wall of the first steel ball 33 and preventing the first steel ball 33 from falling off.

[0030] The working principle of the welding push rod will be specifically described below.

[0031] As Figures 1 - 5 shown, when replacing the ball head component 3 in the welding push rod, the old ball head component 3 is rotated by the threaded column 35 through the connecting seat 32, and the rubber clamping ball 321 is forced to disengage from the semi-circular groove 110, so that the threaded column 35 rotates out of the threaded groove 101, thus completing the disassembly of the ball head component 3. Then, the new ball head component 3 is inserted through the threaded column 35 and screwed into the threaded groove 101. During the screwing process, the connecting seat 32 is sleeved on the outer wall of the annular sleeve 11 through the annular groove 320. A plurality of rubber clamping balls 321 in the annular groove 320 are sequentially pressed and clamped into a plurality of semi-circular grooves 110 opened on the outer wall of the annular sleeve 11 by their elasticity, thus completing the connection between the threaded column 35 and the threaded groove 101, and at the same time increasing the stability of the connection between the push rod body 1 and the ball head component 3, avoiding replacing the entire rod body when replacing the ball head component 3, and achieving the effect of saving resources. During the use of the welding push rod, when the first steel ball 33 in the ball head component 3 contacts an object, through the second steel ball 341 arranged inside the fixed column 34, the second steel ball 341 is driven to roll when the first steel ball 33 moves in the ball socket 310, playing a role in positioning the outer wall of the first steel ball 33, preventing the steel ball from easily falling off, and improving the service life.

[0032] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. A welding push rod, comprising a push rod body (1), a connecting portion (2) and a ball head assembly (3), characterized in that: One end of the connecting portion (2) is fixedly connected to the rear end of the push rod body (1), and the rear end of the outer wall of the ball head assembly (3) is arranged at the front end of the push rod body (1). The ball head assembly (3) includes a mounting head (31), a connecting seat (32), a first steel ball (33), four fixing columns (34) and a threaded column (35). The front end of the mounting head (31) is provided with a ball socket (310), and the outer wall of the first steel ball (33) is engaged with the inside of the ball socket (310). The rear end of the mounting head (31) is fixedly connected to the front end of the connecting seat (32), and the front end of the threaded column (35) is fixedly connected. At the center of the rear end of the connecting seat (32), the exteriors of the four fixing columns (34) are respectively fixedly connected to the front side of the outer wall of the connecting head (31) in a circular array, and the opposite surfaces of the fixing columns (34) are all penetrated into the interior of the ball socket (310), the front end of the push rod body (1) is provided with a threaded groove (101), the exterior of the threaded column (35) is connected to the interior of the threaded groove (101) by threads, the outer wall of the push rod body (1) is fixedly connected to the front side of the threaded groove (101) with an annular sleeve (11), and the outer wall of the annular sleeve (11) is provided with a plurality of semicircular grooves (110) in a circular array.

2. A welding push rod according to claim 1, characterized in that: The rear end of the connecting seat (32) is provided with an annular clamping groove (320) having an outer diameter equal to that of the annular clamping sleeve (11), and the inner wall of the annular clamping groove (320) is provided with an annular array of rubber clamping balls (321) having the same number as the semicircular grooves (110).

3. A welding push rod according to claim 2, characterized in that: The connecting seat (32) is sleeved with the outer wall of the annular sleeve (11) through the annular clamping groove (320), and the outer surfaces of the plurality of rubber clamping balls (321) are respectively engaged with the inner walls of the plurality of semicircular grooves (110).

4. The welding push rod according to claim 1, characterized in that: The interiors of the four fixing columns (34) and the annular slot (320) are all provided with second ball sockets (340), and the interiors of the four second ball sockets (340) are all embedded with second steel balls (341).

5. The welding push rod according to claim 4, characterized in that: The outer surface of the second steel ball (341) overlaps the inner surface of the first steel ball (33).

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