Replaceable ball head assembling assembly for pull rod

Abstract

The utility model relates to the technical field of agricultural machinery parts, in particular to a replaceable ball head assembling assembly for a pull rod, which comprises a ball head accommodating shell arranged at the end part of the pull rod, the ball head accommodating shell comprises a connecting part and an accommodating part which are integrally arranged, and an accommodating hole penetrating through the accommodating part is formed in the center of the accommodating part; an assembled ball head is detachably installed in the containing hole, the inner wall of the containing hole is in sliding fit with the spherical surface of the assembled ball head, and an avoiding groove is formed in the position, located on the edge of the containing hole, of one side of the containing part; a cylindrical connecting blind hole is formed in the end part of the connecting part, and a mounting hole extending into the connecting blind hole is formed in one side wall of the connecting part; due to the fact that the assembling type ball head is adopted to replace a riveting ball, assembling and disassembling are very convenient, the assembling type ball head is installed in the containing hole under the cooperation of the receding groove in the installing process, when the assembling type ball head is abraded and scrapped, the assembling type ball head can be taken out to be replaced by a new one, the whole upper pull rod or the whole lower pull rod does not need to be scrapped, and the use cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery parts technology, and in particular to a replaceable ball joint assembly for a tie rod. Background Technology

[0002] The ball joint is a key component of the agricultural machinery steering system. Its quality and performance directly affect the stability and safety of the machinery. In existing tractor ball joints, the ball joints of the upper and lower tie rods are riveted balls, which are not removable or replaceable. When the ball joints wear out and become unusable, the entire upper and lower tie rods are scrapped, resulting in unnecessary waste. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a replaceable ball joint assembly for a tie rod that is easy to disassemble and replace.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a replaceable ball head assembly for a tie rod, including a ball head receiving shell installed at the end of the tie rod. The ball head receiving shell includes an integrally formed connecting part and a receiving part. A receiving hole penetrating the receiving part is opened at the center of the receiving part. An assembled ball head is detachably installed in the receiving hole. The inner wall of the receiving hole slides with the spherical surface of the assembled ball head. A clearance groove is opened on one side of the receiving part at the edge of the receiving hole. A cylindrical connecting blind hole is provided at the end of the connecting part. An installation hole extending into the connecting blind hole is opened on one side wall of the connecting part.

[0005] As a preferred technical solution, the assembled ball head includes two symmetrically interlocked hemispheres. The top surface of each hemisphere is cut with a top plane, which is parallel to the bottom plane passing through the center of the hemisphere. The bottom planes of the two hemispheres are fitted together, and a shaft hole is provided at the center of the top plane and the bottom plane. The shaft hole is used to install a connecting shaft.

[0006] As a preferred technical solution, an annular retaining ring groove is formed around the shaft hole on the bottom plane, and a retaining ring is installed in the retaining ring groove.

[0007] As a preferred technical solution, the distance between the two top planes of the assembled ball head is greater than the thickness of the receiving portion.

[0008] As a preferred technical solution, the clearance groove is a U-shaped groove, and the distance between the bottom plane of the clearance groove and the center of the receiving hole is greater than the radius of the bottom plane of the hemisphere.

[0009] As a preferred technical solution, the depth of the clearance groove is one-quarter of the thickness of the receiving portion.

[0010] As a preferred technical solution, the width of the clearance groove is greater than the distance between the top plane and the bottom plane on the hemisphere.

[0011] Due to the adoption of the above technical solution, the replaceable ball joint assembly for the tie rod includes a ball joint receiving shell installed at the end of the tie rod. The ball joint receiving shell includes an integrally formed connecting part and a receiving part. A receiving hole penetrating the receiving part is opened in the center of the receiving part. An assembled ball joint is detachably installed in the receiving hole. The inner wall of the receiving hole slides in fit with the spherical surface of the assembled ball joint. A clearance groove is opened on one side of the receiving part at the edge of the receiving hole. A cylindrical connecting blind hole is provided at the end of the connecting part. An installation hole extending into the connecting blind hole is opened on one side wall of the connecting part. The beneficial effects of this utility model are: since the assembled ball joint replaces the rivet ball, installation and disassembly are very convenient. During installation, the assembled ball joint is installed into the receiving hole with the cooperation of the clearance groove. When the assembled ball joint is worn out, it can be removed and replaced with a new one without scrapping the entire upper or lower tie rod, which greatly saves the cost of use. Moreover, disassembly is also very convenient. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0013] Figure 1 This is a three-dimensional structural diagram of the replaceable ball head assembly for a tie rod according to this utility model;

[0014] Figure 2 This is one of the structural schematic diagrams of the ball head receiving shell for the replaceable ball head assembly of the tie rod according to this utility model;

[0015] Figure 3 This is the second schematic diagram of the ball head receiving shell of the replaceable ball head assembly for the tie rod according to this utility model;

[0016] Figure 4 yes Figure 3 Sectional view along the middle AA direction;

[0017] Figure 5 This is the third structural schematic diagram of the ball head receiving shell for the replaceable ball head assembly of the tie rod according to this utility model;

[0018] Figure 6 yes Figure 5 Sectional view along the BB direction;

[0019] Figure 7 This is an exploded structural diagram of the assembled ball head of the replaceable ball head assembly for the tie rod according to this utility model;

[0020] Figure 8 This is one of the usage diagrams of the replaceable ball head assembly for the tie rod according to this utility model;

[0021] Figure 9 This is the second diagram showing the usage state of the replaceable ball head assembly for the tie rod according to this utility model;

[0022] Figure 10 yes Figure 9 Sectional view along the DD direction;

[0023] Figure 11 yes Figure 9 A cross-sectional view along the CC direction.

[0024] In the figure: 1-Connecting part; 11-Connecting blind hole; 12-Mounting hole; 2-Accommodating part; 21-Accommodating hole; 22-Allowing groove; 3-Assembled ball head; 31-Hemisphere; 32-Top plane; 33-Bottom plane; 34-Shaft hole; 35-Snap ring groove; 36-Snap ring; 4-Pull rod. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0026] like Figures 1 to 11 As shown, the replaceable ball joint assembly for the pull rod includes a ball joint housing installed at the end of the pull rod 4. The ball joint housing includes an integrally formed connecting part 1 and a housing part 2. A housing hole 21 is provided in the center of the housing part 2, penetrating the housing part 2. An assembled ball joint 3 is detachably installed in the housing hole 21. The inner wall of the housing hole 21 slides with the spherical surface of the assembled ball joint 3. A clearance groove 22 is provided on one side of the housing part 2 at the edge of the housing hole 21. A cylindrical connecting blind hole 11 is provided at the end of the connecting part 1. A mounting hole 12 extending into the connecting blind hole 11 is provided on one side wall of the connecting part 1. The connecting blind hole 11 is used to install the pull rod 4, and the mounting hole 12 is used to fix it to the pull rod 4. Since the assembled ball head 3 replaces the rivet ball, installation and disassembly are very convenient. During installation, the assembled ball head 3 is installed into the receiving hole 21 with the cooperation of the clearance groove 22. When the assembled ball head 3 is worn out, it can be removed and replaced with a new one. There is no need to scrap the entire upper pull rod 4 or lower pull rod 4, which greatly saves the cost of use. Moreover, disassembly is also very convenient.

[0027] like Figure 7As shown, the assembled ball joint 3 includes two symmetrically interlocked hemispherical parts 31. A top plane 32 is cut at the spherical tip of each hemispherical part 31. The top plane 32 is parallel to the bottom plane 33 passing through the center of the hemispherical part 31. The bottom planes 33 of the two hemispherical parts 31 are fitted together. A shaft hole 34 is formed at the center of the top plane 32 and the bottom plane 33, for mounting a connecting shaft. Figure 7 As shown, an annular retaining ring groove 35 is formed around the shaft hole 34 on the bottom plane 33, and a retaining ring 36 is installed in the retaining ring groove 35. The bottom planes 33 of the two hemispheres 31 are slidably installed in the receiving hole 21. Under the elastic force of the retaining ring 36, the spherical surface is in contact with the inner wall of the receiving hole 21. The connecting shaft passes through the shaft hole 34 and drives the assembled ball head 3 to rotate. When disassembling the assembled ball head 3, first remove the connecting shaft, and then rotate the shaft hole 34 to the desired position. Figure 1 As shown, position the top plane 32 and bottom plane 33 of one hemisphere 31 so that they are respectively located within the clearance groove 22. Apply force to disengage the hemisphere 31 from the receiving hole 21 and remove it from the clearance groove 22. At this time, the retaining spring 36 will be destroyed. Then remove the other hemisphere 31, and a new assembled ball head 3 can be replaced. When replacing the assembled ball head 3, first insert one hemisphere 31 from the clearance groove 22 into the receiving hole 21, then insert the retaining spring 36 into the retaining spring groove 35. Rotate the hemisphere a certain angle to make room in the clearance groove 22. Then, overcome the elastic force of the retaining spring 36 and insert the other hemisphere 31 from the clearance groove 22 into the receiving hole 21. The two hemispheres 31 are fitted together. Rotate the assembled ball head 3 to the position shown. Figure 8 Install the connecting shaft at the indicated position. This modular ball joint 3 is easy to disassemble, significantly reducing operating costs.

[0028] like Figure 8 and Figure 9 As shown in the diagram, the distance between the two top planes 32 of the assembled ball head 3 is greater than the thickness of the receiving portion 2. The greater thickness of the assembled ball head 3 compared to the receiving portion 2 results in greater stability during use.

[0029] like Figure 1 , Figure 2 Figure 5 and Figure 6 As shown in the diagram, the clearance groove 22 is a U-shaped groove, and the distance between the bottom plane of the clearance groove 22 and the center of the receiving hole 21 is greater than the radius of the bottom plane 33 of the hemisphere 31. This distance is sufficient to allow the hemisphere 31 to disengage from the receiving hole 21 and the clearance groove 22 under the action of applied force without getting stuck.

[0030] like Figure 6As shown, the depth of the clearance groove 22 is one-quarter of the thickness of the receiving part 2. The depth of the clearance groove 22 should not be too deep, otherwise it will affect the stability of use, nor should it be too shallow, otherwise the hemispherical part 31 cannot be removed. Based on experiments, the depth of the clearance groove 22 was selected to be one-quarter of the thickness of the receiving part 2, which is the preferred technical solution.

[0031] like Figure 1 As shown, the width of the clearance groove 22 is greater than the distance between the top plane 32 and the bottom plane 33 on the hemisphere 31. The clearance groove 22 is wide enough to ensure that the hemisphere 31 can be easily removed.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A replaceable ball joint assembly for a tie rod, characterized in that: The device includes a ball head housing installed at the end of the pull rod (4). The ball head housing includes an integrally formed connecting part (1) and a housing part (2). The housing part (2) has a housing hole (21) through the center of the housing part (2). An assembled ball head (3) is detachably installed in the housing hole (21). The inner wall of the housing hole (21) slides with the spherical surface of the assembled ball head (3). A clearance groove (22) is provided on one side of the housing part (2) at the edge of the housing hole (21). The end of the connecting part (1) is provided with a cylindrical connecting blind hole (11). An installation hole (12) extending into the connecting blind hole (11) is provided on one side wall of the connecting part (1).

2. The replaceable ball joint assembly for a tie rod as described in claim 1, characterized in that: The assembled ball head (3) includes two symmetrically interlocked hemispheres (31). The top surface of the hemisphere (31) is cut with a top plane (32). The top plane (32) is parallel to the bottom plane (33) passing through the center of the hemisphere (31). The bottom planes (33) of the two hemispheres (31) fit together. A shaft hole (34) is opened through the center of the top plane (32) and the bottom plane (33). The shaft hole (34) is used to install a connecting shaft.

3. The replaceable ball joint assembly for a tie rod as described in claim 2, characterized in that: An annular retaining ring groove (35) is provided on the bottom plane (33) around the shaft hole (34), and a retaining ring (36) is installed in the retaining ring groove (35).

4. The replaceable ball joint assembly for a tie rod as described in claim 2, characterized in that: The distance between the two top planes (32) of the assembled ball head (3) is greater than the thickness of the receiving portion (2).

5. The replaceable ball joint assembly for a tie rod as described in claim 2, characterized in that: The clearance groove (22) is a U-shaped groove, and the distance between the bottom plane of the clearance groove (22) and the center of the receiving hole (21) is greater than the radius of the bottom plane (33) of the hemisphere (31).

6. The replaceable ball joint assembly for a tie rod as described in claim 5, characterized in that: The depth of the clearance groove (22) is one-quarter of the thickness of the receiving part (2).

7. The replaceable ball joint assembly for a tie rod as described in claim 5, characterized in that: The width of the clearance groove (22) is greater than the distance between the top plane (32) and the bottom plane (33) on the hemisphere (31).

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