Ball stud test clamp

Abstract

The utility model relates to the field of test equipment, and discloses a ball stud test fixture, which comprises a bottom box and a clamping assembly, and is characterized in that an upward cavity is formed in the bottom box; the clamping assembly comprises two clamping blocks which can be close to or away from each other, clamping grooves are formed in the opposite sides of the two clamping blocks correspondingly, the two clamping grooves upwards penetrate through the two clamping blocks correspondingly, rotation stopping teeth are arranged in the two clamping grooves correspondingly, and the rotation stopping teeth are matched with the rotation stopping teeth. According to the utility model, the ball stud for a tightening test does not need to be cut and processed, the ball stud is embedded into the clamping groove for positioning, and the rotation of the ball stud is limited by the rotation stopping teeth, so that the ball stud can be stably positioned, and the clamping blocks are not required to be clamped in the clamping groove. The efficiency and convenience of the ball stud tightening test are improved, and the test cost is reduced.

Description

Technical Field

[0001] This utility model relates to testing equipment, and more particularly to a ball head bolt test fixture. Background Technology

[0002] In automobile assembly, ball end bolts are used to connect structural components. To ensure the stability of the connection, a tightening test is required to assess the strength of the ball end bolts. Currently, in the tightening test of ball end bolts, simply applying force to the splines on the bolt cannot directly clamp and fix the ball head. It is usually necessary to first cut and machine mating surfaces on both sides of the ball head before conducting the test. This process is complex, cumbersome, and costly, and the parallelism of the cut surfaces affects the test results. Therefore, there is an urgent need for a fixture that can more conveniently and stably clamp ball end bolts. Utility Model Content

[0003] The purpose of this utility model is to provide a ball head bolt test fixture to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The ball head bolt test fixture according to the first aspect of the present invention includes:

[0005] The bottom box has an upward-facing cavity inside.

[0006] The clamping assembly includes two clamping blocks that can move closer to or further away from each other. Each of the two clamping blocks has a clamping groove on one side facing each other. The two clamping grooves extend upward through the two clamping blocks. Each of the two clamping grooves has an anti-rotation tooth. The two clamping blocks can move closer to each other and be connected in the cavity.

[0007] This technical solution has at least the following beneficial effects: When testing a ball head bolt, the two clamping blocks are removed from the base box and separated. The ball head bolt to be tested is then inserted between the two clamping blocks, so that the ball head of the bolt is embedded in the clamping grooves of the two clamping blocks. The anti-rotation teeth in the two clamping grooves engage with the spline keyway or hole of the ball head bolt, thereby restricting the relative rotation of the ball head bolt within the clamping grooves. After the two clamping blocks are brought closer together until they abut against each other, they are then inserted back into the cavity. The base box can be used to keep the two clamping blocks clamping and fixing the ball head of the bolt. At this point, the base box can be inserted into an external device for clamping and fixing, such as a bench vise. Then, the nut on the ball head bolt is tightened for testing. This eliminates the need to cut and process the ball head bolt for the tightening test. By embedding the ball head bolt into the clamping groove for positioning and using the anti-rotation teeth to restrict the rotation of the ball head bolt, the ball head bolt can be stably positioned, improving the efficiency and convenience of the ball head bolt tightening test and reducing the testing cost.

[0008] According to some embodiments of this utility model, with the direction in which the two clamping blocks are arranged as the first direction, the bottom box is connected to at least one side along the first direction with a set screw, which can move towards or away from the clamping blocks. When the two clamping blocks abut against each other and are then inserted into the cavity, there is a fitting gap between the length of the two clamping blocks along the first direction and the inner wall of the cavity. At this time, the two clamping blocks can be easily inserted into the cavity. Then, the set screw is adjusted so that the set screw moves closer to the clamping blocks and presses against them. In this way, the clamping blocks can be stably positioned along the first direction, which not only improves the convenience of inserting the two clamping blocks into the cavity, but also ensures the stability of inserting the two clamping blocks into the cavity.

[0009] According to some embodiments of this utility model, the bottom box is connected to set screws on both sides along the first direction. Before inserting the clamping blocks, both set screws can be adjusted to exit the cavity. At this time, the whole formed by the two clamping blocks forms a larger gap with the inside of the cavity in the first direction, making it easier to insert the two clamping blocks into the cavity. Then, the two set screws are screwed into the cavity, and the two set screws are used to tighten the two sides of the two clamping blocks.

[0010] According to some embodiments of this utility model, with the direction perpendicular to the first direction as the second direction, the base box includes a first housing and a second housing that can move closer to or further away from each other along the second direction. The first housing and the second housing can approach each other to abut and surround the cavity. The first housing and the second housing are placed inside the peripheral device for pre-positioning. For example, the first housing and the second housing are placed within the clamping area of ​​a bench vise, with the arrangement direction of the first housing and the second housing the same as the clamping direction of the bench vise. At this time, the first housing and the second housing are moved further apart to expand the cavity. After the two clamping blocks clamp and fix the ball heads of the ball head bolts along the first direction, the entire assembly can be more easily installed into the cavity. Then, the clamping area of ​​the bench vise is closed, causing the first housing and the second housing to approach and abut each other, thereby clamping the first housing and the second housing along the second direction, further improving the convenience of installing the two clamping blocks into the cavity.

[0011] According to some embodiments of this utility model, a guide post is provided on the side of the first housing opposite to the second housing, and a guide hole is provided on the second housing opposite to the guide post. The guide post is fitted into the guide hole. When the first housing and the second housing move away from each other, the guide post on the first housing gradually moves out of the guide hole of the second housing. At this time, by utilizing the cooperation between the guide post and the guide hole, the first housing and the second housing can be kept to move only relatively closer or further away in the second direction, ensuring the accuracy of the alignment of the first housing and the second housing when they approach each other to abut each other, thereby improving the clamping and fixing effect of the two clamping blocks.

[0012] According to some embodiments of this utility model, a spring is sleeved on the portion of the guide post extending into the guide hole. A limiting ring is provided at the opening of the guide hole in the second housing. The two ends of the spring abut against the limiting ring and the end of the guide post, respectively. The spring has a tendency to press the guide post into the guide hole and cause the first housing and the second housing to abut against each other. When the two clamping blocks are installed into the cavity, the first housing and the second housing are first separated from each other. The end of the guide post away from the end extending into the guide hole forms a larger outer diameter portion. At this time, the end of the guide post presses the spring against the limiting ring, so that the spring is elastically compressed. Then, the two clamping blocks are placed into the cavity. The first housing and the second housing can be far apart from each other, making it easier to install the two clamping blocks. Then, the tension that separates the first housing and the second housing is removed. Under the action of the elastic restoring force of the spring, the first housing and the second housing can be brought closer together and abut against each other, thereby clamping the two clamping blocks together in the second direction. This can further improve the convenience of installing the two clamping blocks into the cavity and better maintain the clamping state of the two clamping blocks on the ball head bolt.

[0013] According to some embodiments of this utility model, the two sides of the first housing and the second housing that abut against each other along the second direction are offset from each other along the first direction. In the two sidewalls of the first housing connected to the second housing, one sidewall has a longer length along the second direction, and the other sidewall has a shorter length along the second direction. Similarly, for the second housing, there is also a case where one sidewall is longer than the other. Therefore, a set screw is provided on the longer side of the first housing along the second direction, and a set screw is provided on the longer side of the second housing along the second direction. The two set screws press against the middle of the two clamping blocks, thereby pressing the two clamping blocks tightly against each other along the first direction. This reduces the number of set screws used, ensures the stability of the pressure on the two clamping blocks, and improves operational convenience.

[0014] According to some embodiments of this utility model, the tops of the two clamping blocks protrude upwards from the bottom box. After the external structural component is connected to the ball head bolt, it moves down to abut against the top surface of the two clamping blocks. The top surface of the two clamping blocks can provide stable upward support for the structural component, preventing the bottom box sides from pressing against the structural component due to the two clamping blocks being too low.

[0015] According to some embodiments of this utility model, multiple anti-rotation teeth are respectively arranged around the cavity in the two clamping grooves. For example, when the ball head bolt has a spline, the ball head portion of the ball head bolt is embedded in the clamping groove. At this time, the multiple anti-rotation teeth in the clamping groove mesh with the spline, thereby increasing the anti-rotation restriction of the clamping block on the ball head bolt and enhancing the stability during the tightening test of the ball head bolt.

[0016] According to some embodiments of this utility model, the outer side of the base box is provided with anti-slip texture. The anti-slip texture can improve the stability when moving, clamping and fixing the base box, especially when fixing it inside an external device, it can better clamp and fix the base box.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be derived from the description.

[0018] It is obvious, or can be understood through practice of this utility model. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the clamping assembly of this utility model when it is separated from the bottom box.

[0021] Figure 2 This is a perspective view of the clamping assembly of this utility model clamping the ball head bolt and connecting it to the bottom box.

[0022] Figure 3 This is a top view of the bottom box of this utility model after being cut along the horizontal plane where the guide post is located.

[0023] In the attached diagram: 100-bottom box, 110-cavity, 120-first housing, 121-guide post, 122-spring, 130-second housing, 131-limiting ring, 210-clamping block, 211-clamping groove, 212-anti-rotation tooth, 300-set screw. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1 and Figure 2 A ball head bolt test fixture, comprising a base box 100 and a clamping assembly, wherein:

[0029] The bottom box 100 has an upward-facing cavity 110 inside;

[0030] The clamping assembly includes two clamping blocks 210 that can move closer to or further away from each other. Each of the two clamping blocks 210 has a clamping groove 211 on one side facing each other. The two clamping grooves 211 extend upward through the two clamping blocks 210. Each of the two clamping grooves 211 has an anti-rotation tooth 212. The two clamping blocks 210 can approach each other and abut against each other and be connected in the cavity 110. In practical applications, there may be only two clamping blocks 210. In this case, the clamping grooves 211 in the two clamping blocks 210 directly enclose the cavity 110. In some embodiments, there may be three or four clamping blocks 210. For example, when there are three clamping blocks 210, the cavity 110 is formed by the clamping grooves 211 in the three clamping blocks 210.

[0031] As described above, when testing a ball head bolt, the two clamping blocks 210 are removed from the base box 100 and separated. The ball head bolt to be tested is then inserted between the two clamping blocks 210, so that the ball head portion of the bolt is embedded in the clamping grooves 211 of the two clamping blocks 210. The anti-rotation teeth 212 in the two clamping grooves 211 engage with the spline keyway or hole of the ball head bolt, thereby restricting relative rotation of the ball head bolt within the clamping grooves 211. The two clamping blocks 210 are then brought closer together until they abut against each other before being inserted again. Inside the cavity 110, the base box 100 can hold the two clamping blocks 210 to clamp and fix the ball head of the ball head bolt. At this time, the base box 100 can be installed into the external equipment for clamping and fixing, such as a bench vise. Then, the nut of the ball head bolt is tightened for testing. In this way, there is no need to cut and process the ball head bolt for tightening test. By embedding the ball head bolt into the clamping groove 211 for positioning and using the anti-rotation tooth 212 to restrict the rotation of the ball head bolt, the ball head bolt can be stably positioned, which improves the efficiency and convenience of ball head bolt tightening test and reduces test cost.

[0032] When the two clamping blocks 210 are installed into the cavity 110, they can be connected within the cavity 110 via a clearance fit. This makes installation and removal of the cavity 110 very convenient. However, because there is a gap between the clamping blocks 210 and the inner wall of the base box 100, the clamping blocks 210 may wobble within the base box 100 during tightening tests, affecting the test results. Alternatively, they can be connected within the cavity 110 via an interference fit. In this case, after installation into the cavity 110, the connection between the clamping blocks 210 and the base box 100 is stable, ensuring a secure connection during testing. While the impact on the result is relatively small, it is inconvenient to insert or remove the cavity 110, requiring considerable effort. Therefore, in order to improve the ease of inserting the clamping block 210 into the cavity 110 and to keep the connection structure stable after inserting the cavity 110, in this embodiment, with the direction in which the two clamping blocks 210 are arranged as the first direction, the bottom box 100 is connected to at least one side along the first direction with a set screw 300, which can move towards or away from the clamping block 210. When the two clamping blocks 210 abut against each other and are then inserted into the cavity 110, there is a fitting gap between the length of the two clamping blocks 210 along the first direction and the inner wall of the cavity 110. At this time, the two clamping blocks 210 can be easily inserted into the cavity 110. Then, the set screw 300 is adjusted so that the set screw 300 moves closer to the clamping block 210 and presses against the clamping block 210. In this way, the clamping block 210 can be stably positioned along the first direction, which not only improves the convenience of inserting the two clamping blocks 210 into the cavity 110, but also ensures the stability of inserting the two clamping blocks 210 into the cavity 110.

[0033] In the above embodiment, a set screw 300 may be provided only on one side of the base box 100. In this case, the set screw 300 presses the two clamping blocks 210 together along the first direction to the other side of the cavity 110. However, to further improve operational flexibility, in this embodiment, set screws 300 are respectively connected to both sides of the base box 100 along the first direction. Before inserting the clamping blocks 210, both set screws 300 can be adjusted to be out of the cavity 110. At this time, the whole formed by the two clamping blocks 210 forms a larger gap with the inside of the cavity 110 in the first direction, making it easier to insert the two clamping blocks 210 into the cavity 110. Then, the two set screws 300 are screwed into the cavity 110, and the two set screws 300 are used to press the two sides of the two clamping blocks 210 together.

[0034] The base box 100 can be a one-piece structure, forming a cavity 110 that provides a fixed space. However, to further improve the ease of inserting the clamping block 210 into the cavity 110, the base box 100 can be designed as a detachable structure. Specifically, for example... Figure 3 As shown, with the direction perpendicular to the first direction as the second direction, the bottom box 100 includes a first shell 120 and a second shell 130 that can move closer to or further away from each other along the second direction. The first shell 120 and the second shell 130 can move closer to each other and form the cavity 110. The first housing 120 and the second housing 130 are placed inside the peripheral device for pre-positioning. For example, the first housing 120 and the second housing 130 are placed in the clamping area of ​​a bench vise, with the arrangement direction of the first housing 120 and the second housing 130 being the same as the clamping direction of the bench vise. At this time, the first housing 120 and the second housing 130 are moved away from each other to expand the cavity 110. After the two clamping blocks 210 clamp and fix the ball head of the ball head bolt along the first direction, the whole can be installed into the cavity 110 more easily. Then, the clamping area of ​​the bench vise is closed, so that the first housing 120 and the second housing 130 are brought closer to each other and abut against each other, thereby clamping the first housing 120 and the second housing 130 along the second direction, further improving the convenience of installing the two clamping blocks 210 into the cavity 110.

[0035] After the first housing 120 and the second housing 130 are moved away from each other, if a structure is provided between the first housing 120 and the second housing 130 to guide each other, it is easy for the first housing 120 and the second housing 130 to shift relative to each other when they are brought closer together, which will affect the clamping and fixing effect of the clamping block 210. Therefore, in order to improve the accuracy of bringing the first housing 120 and the second housing 130 closer together, in this embodiment, a guide post 121 is provided on the side of the first housing 120 opposite to the second housing 130, and a guide hole is provided on the second housing 130 opposite to the guide post 121. The guide post 121 is connected to the guide hole. When the first housing 120 and the second housing 130 move away from each other, the guide post 121 on the first housing 120 gradually moves out of the guide hole of the second housing 130. At this time, by utilizing the cooperation between the guide post 121 and the guide hole, the first housing 120 and the second housing 130 can only move relatively closer or further away in the second direction, ensuring the accuracy of the alignment of the first housing 120 and the second housing 130 when they approach each other to abut each other, thereby improving the clamping and fixing effect of the two clamping blocks 210.

[0036] In order to achieve rapid positioning when the two clamping blocks 210 are installed into the first housing 120 and the second housing 130, in this embodiment, the portion of the guide post 121 extending into the guide hole is fitted with a spring 122, and the second housing 130 is provided with a limiting ring 131 at the opening of the guide hole. The two ends of the spring 122 abut against the limiting ring 131 and the end of the guide post 121, respectively. The spring 122 has the tendency to press the guide post 121 into the guide hole and cause the first housing 120 and the second housing 130 to abut against each other. When the two clamping blocks 210 are installed into the cavity 110, the first housing 120 and the second housing 130 are first separated from each other. The end of the guide post 121 that is away from the end extending into the guide hole forms a part with a larger outer diameter. At this time, the end of the guide post 121 presses the spring 122 against the limiting ring 131, so that the spring 122 is elastically compressed. Then the two clamping blocks 210 are placed into the cavity 110. The first housing 120 and the second housing 130 can be far apart from each other, so that it is easier to install the two clamping blocks 210. Then the pulling force that separates the first housing 120 and the second housing 130 from each other is removed. Under the action of the elastic restoring force of the spring 122, the first housing 120 and the second housing 130 can be brought closer to each other and abut against each other, so that the two clamping blocks are clamped together in the second direction. This can further improve the convenience of installing the two clamping blocks 210 into the cavity 110 and better maintain the clamping state of the two clamping blocks 210 on the ball head bolt.

[0037] In practical applications, a guide post 121, a guide hole, a spring 122 and a limiting ring 131 are used as a limiting group. Multiple limiting groups can be set between the first housing 120 and the second housing 130. For example, a limiting group can be set between the two sides of the first housing 120 and the second housing 130, thereby enhancing the stability of the first housing 120 and the second housing 130 when they approach or move away from each other.

[0038] In the above embodiment, the positions where the first housing 120 and the second housing 130 abut against each other can be directly opposite each other, respectively facing the middle position of the clamping block 210. When it is necessary to install set screws 300 on both sides of the first housing 120 and the second housing 130 along the second direction, set screws 300 need to be installed on both sides of the first housing 120 and both sides of the second housing 130 to stably press against the clamping block 210. In order to simplify the structure, in this embodiment, the two sides of the first housing 120 and the second housing 130 that abut against each other along the second direction are staggered along the first direction. In the two side walls of the first housing 120 connected to the second housing 130, one side wall has a longer length along the second direction and the other side wall has a shorter length along the second direction. Similarly, for the second housing 130, there is also a case where the length of one side wall is greater than the length of the other side wall. Therefore, a set screw 300 is provided on the side of the first housing 120 that is longer along the second direction, and a set screw 300 is provided on the side of the second housing 130 that is longer along the second direction. The two set screws 300 press against the middle position of the two clamping blocks 210 respectively, thereby pressing the two clamping blocks 210 against each other and tightening them along the first direction. This can reduce the number of set screws 300 used and ensure the stability of pressing the two clamping blocks 210, thereby improving the ease of operation.

[0039] During the ball head bolt tightening test, the external structural component is pressed downwards to the bottom of its travel, and then a nut is connected to the ball head bolt. The nut is used to press the external structural component down and position it. To improve the stability when pressing the structural component down and positioning it, in this embodiment, the tops of the two clamping blocks 210 protrude upwards from the base box 100. After the external structural component is connected to the ball head bolt, it moves down to abut against the top surfaces of the two clamping blocks 210. The top surfaces of the two clamping blocks 210 can provide stable upward support for the structural component, preventing the base box 100 from pressing against the structural component due to the two clamping blocks 210 being too low.

[0040] Within each clamping groove 211, there may be only one anti-rotation tooth 212, or multiple teeth may be arranged. Multiple anti-rotation teeth 212 within each of the two clamping grooves 211 may surround the cavity 110. For example, when the ball head bolt has a spline, the ball head portion of the ball head bolt is inserted into the clamping groove 211. In this case, the multiple anti-rotation teeth 212 within the clamping groove 211 engage with the spline, thereby increasing the anti-rotation restriction of the clamping block 210 on the ball head bolt and enhancing the stability during the ball head bolt tightening test.

[0041] In some embodiments, the outer side of the base box 100 is provided with anti-slip texture. The anti-slip texture can improve the stability when moving, clamping and fixing the base box 100, especially when fixing it inside an external device, it can better clamp and fix the base box 100. For example, anti-slip texture can be provided on the two side walls of the base box 100 along the second direction, which makes it more stable when using a bench vise to clamp the base box 100 along the two side walls along the second direction.

[0042] This utility model also provides a ball head bolt. By performing a tightening test using the aforementioned ball head bolt test fixture, its performance can be tested efficiently and accurately, and damage to the ball head bolt during the test can be effectively reduced, thus lowering the testing cost of the ball head bolt.

[0043] This utility model embodiment also provides a vehicle, including the ball head bolt of the above embodiment.

[0044] The vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. It can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle must have an electric motor capable of outputting power or acting as a generator to store mechanical energy. When the vehicle is a new energy vehicle, it can be a hybrid or a pure electric vehicle.

[0045] Since the vehicle applies all the technical solutions of the ball head bolts described above, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0046] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A ball head bolt test fixture, characterized in that: include: The bottom box (100) has an upward-facing cavity (110) inside. The clamping assembly includes two clamping blocks (210) that can move closer to or further away from each other. Each of the two clamping blocks (210) has a clamping groove (211) on one side facing each other. The two clamping grooves (211) extend upward through the two clamping blocks (210). Each of the two clamping grooves (211) has an anti-rotation tooth (212). The two clamping blocks (210) can move closer to each other and be connected in the cavity (110).

2. The ball head bolt test fixture according to claim 1, characterized in that: With the direction in which the two clamping blocks (210) are arranged as a first direction, the bottom box (100) is connected to a set screw (300) on at least one side along the first direction, and the set screw (300) can move toward or away from the clamping blocks (210).

3. The ball head bolt test fixture according to claim 2, characterized in that: The bottom box (100) is connected to set screws (300) on both sides along the first direction.

4. The ball head bolt test fixture according to claim 1, characterized in that: With the direction perpendicular to the first direction as the second direction, the bottom box (100) includes a first shell (120) and a second shell (130) that can move closer to or further away from each other along the second direction. The first shell (120) and the second shell (130) can move closer to each other and form the cavity (110).

5. The ball head bolt test fixture according to claim 4, characterized in that: The first housing (120) has a guide post (121) on the side opposite to the second housing (130), and the second housing (130) has a guide hole on the position opposite to the guide post (121), and the guide post (121) is connected to the guide hole.

6. The ball head bolt test fixture according to claim 5, characterized in that: A spring (122) is sleeved on the part of the guide post (121) that extends into the guide hole. A limit ring (131) is provided at the opening of the guide hole in the second housing (130). The two ends of the spring (122) abut against the ends of the limit ring (131) and the guide post (121), respectively. The spring (122) has the tendency to press the guide post (121) into the guide hole and make the first housing (120) and the second housing (130) abut against each other.

7. The ball head bolt test fixture according to claim 4, characterized in that: The two sides of the first housing (120) and the second housing (130) that abut against each other in the second direction are offset from each other in the first direction.

8. The ball head bolt test fixture according to claim 1, characterized in that: The tops of the two clamping blocks (210) protrude upward from the bottom box (100).

9. The ball head bolt test fixture according to claim 1, characterized in that: The anti-rotation teeth (212) in the two clamping grooves (211) are arranged in multiple ways around the cavity (110).

10. The ball head bolt test fixture according to claim 1, characterized in that: The outer side of the base box (100) is provided with anti-slip texture.

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