Detection device for tensile test of automobile fastener

Abstract

The utility model discloses a detection device for a tensile test of an automobile fastener, and relates to the technical field of detection devices. The device comprises a supporting assembly, a limiting assembly, a stretching assembly and a power driving assembly, the supporting assembly is installed in an external protection bin and comprises a bearing plate, a detection system is installed above the bearing plate, the limiting assembly comprises a first limiting piece and a second limiting piece, a first storage groove is formed in the top of the first limiting piece, and a second storage groove is formed in the top of the second limiting piece. A fastener is stored in the first storage groove, a second storage groove is formed in the bottom of the second limiting piece, the stretching assembly comprises an internal thread ring, the internal thread ring is in threaded fit with the first storage groove, a driving gear ring is fixedly arranged on the circumferential side face of the internal thread ring, the power driving assembly comprises a driving rack, and the driving rack is meshed with the driving gear ring. Through the specific structural design of the supporting assembly, the limiting assembly, the stretching assembly and the power driving assembly, the fastener stretching efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices, and in particular relates to a testing device for tensile testing of automotive fasteners. Background Technology

[0002] Among automotive fasteners, nuts and fasteners are the most important. Tensile testing is a fundamental aspect of quality assurance for threaded fasteners, used to determine the fracture load and strain under axial load. Testing devices are often used during tensile testing.

[0003] Currently, when performing tensile tests on automotive fasteners, it is usually necessary to limit the fasteners before conducting the tensile test. During the limiting process, manual correction is often required, which greatly reduces the testing efficiency. To address this issue, we provide a testing device for automotive fastener tensile testing to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for tensile testing of automotive fasteners. Through the specific structural design of the support component, limiting component, tensile component, and power drive component, the invention solves the problem of low tensile efficiency of existing fasteners.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a testing device for tensile testing of automotive fasteners, comprising a support assembly, a limiting assembly, a tensile assembly, and a power drive assembly. The support assembly is installed inside an external protective chamber and includes a support plate. A testing system is installed on top of the support plate. The limiting assembly is installed above the support plate and includes a first limiting member and a second limiting member. The first limiting member has a first storage groove at its top, where fasteners are stored. The second limiting member has a second storage groove at its bottom. The first and second storage grooves combine to form a storage cavity. The tensile assembly is installed above the support plate and includes an internally threaded ring that is threadedly engaged with the first storage groove. A drive gear ring is fixedly provided on the circumferential side of the internally threaded ring. The power drive assembly is installed on top of the support plate and includes a drive rack that meshes with the drive gear ring.

[0007] The present invention is further configured such that two positioning plates are fixedly provided on the top of the bearing plate, one of the positioning plates is equipped with a drive motor on one side, and a first support plate and a second support plate are fixedly provided on the top of the bearing plate. The first support plate is fixedly connected to the first limiting member, and the first support plate and the second limiting member are slidably engaged.

[0008] The present invention is further configured such that the first support plate and the second support plate are connected by a connecting plate, the detection system is installed on the surface of the connecting plate, and two limiting plates are fixedly provided on one side of the first support plate.

[0009] The present invention is further configured such that a first elastic element is fixedly provided at the bottom of the limiting plate, a first connecting block is fixedly provided at one end of the first elastic element, and the first connecting block is slidably engaged with the first support plate.

[0010] The present invention is further configured such that the first connecting block and the second limiting member are fixedly connected, the second connecting block is fixedly provided on both sides of the first limiting member, an electromagnet is fixedly provided on the top of the second connecting block, and a permanent magnet is fixedly provided on the bottom of the first connecting block, and the electromagnet and the permanent magnet are magnetically attracted to each other.

[0011] The present invention is further configured such that two guide rods are fixedly provided on one side of the second support plate, a cylinder is installed on the side of the second support plate near the guide rods, a connecting plate is fixedly provided on the output end of the cylinder, a threaded connecting rod is fixedly provided on one side of the connecting plate, and the threaded connecting rod is threadedly engaged with the internal threaded ring.

[0012] The present invention is further configured such that a support frame is slidably disposed on the top of the bearing plate, the support frame is fixedly connected to the connecting plate, the support frame is slidably engaged with the guide rod, and two second elastic members are fixedly disposed on one side of the support frame, with one end of the second elastic member being fixedly connected to the second support plate.

[0013] The present invention is further configured such that a movable frame is fixedly provided at the bottom of the drive rack, the movable frame is slidably engaged with the support plate, a positioning threaded rod is rotatably provided between the two positioning plates, the output end of the drive motor is fixedly connected to the positioning threaded rod, and the positioning threaded rod is threadedly engaged with the movable frame.

[0014] The present invention has the following advantages: 1. The present invention controls the electromagnet to be energized and magnetized. The first connecting block moves and drives the second limiting member to move. The first elastic member is stretched. At this time, the first storage slot and the second storage slot combine to form a storage cavity. The fastener is placed in the storage cavity. This process can automatically limit and fix the fastener. The staff only needs to place the fastener in the first storage slot, which greatly improves the detection efficiency of the fastener.

[0015] 2. This utility model uses a cylinder to drive the connecting plate to move, the support frame moves along the guide rod, and the second elastic element is stretched. When the connecting plate moves in the opposite direction, the support frame moves in the opposite direction along the guide rod. This process stretches the fastener. If the fastener breaks during the stretching process, the second elastic element can play a buffering role to prevent the instrument from being scratched by broken metal fragments.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a testing device for tensile testing of automotive fasteners.

[0019] Figure 2 for Figure 1 Partial structural diagram.

[0020] Figure 3 This is a schematic diagram of the support component in this utility model.

[0021] Figure 4 This is a schematic diagram of the limiting component in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the second limiting member in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the tensioning component in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-Support assembly, 101-Bearing plate, 102-Detection system, 103-Positioning plate, 104-Drive motor, 105-First support plate, 106-Second support plate, 107-Connecting plate, 108-Limiting plate, 109-Guide rod, 2-Limiting assembly, 201-First limiting component, 202-Second limiting component, 203-First storage slot, 204-Second storage slot, 205-First elastic component, 206-First connecting block, 207-Second connecting block, 3-Fastener, 4-Tension assembly, 401-Internal threaded ring, 402-Drive gear ring, 403-Cylinder, 404-Connecting disc, 405-Threaded connecting rod, 406-Support frame, 407-Second elastic component, 5-Power drive assembly, 501-Drive rack, 502-Moving frame, 503-Positioning threaded rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] For a specific implementation example, please refer to Implementation Example 1. Figure 1-6 This utility model relates to a testing device for tensile testing of automotive fasteners, comprising a support assembly 1, a limiting assembly 2, a tensile assembly 4, and a power drive assembly 5. The support assembly 1 is installed inside an external protective chamber and includes a bearing plate 101. A testing system 102 is installed above the bearing plate 101. The limiting assembly 2 is installed above the bearing plate 101 and includes a first limiting member 201 and a second limiting member 202. A first storage groove 203 is formed at the top of the first limiting member 201, and a fastener 3 (one end of the fastener 3 is a cylindrical structure, i.e., a non-threaded structure) is stored inside the first storage groove 203. The testing system 102 determines whether the fastener 3 is qualified and then tightens it. If fastener 3 does not break when stretched to a certain length, it is considered a qualified product; otherwise, it is considered a defective product. The bottom of the second limiting member 202 is provided with a second storage groove 204. The first storage groove 203 and the second storage groove 204 are combined to form a storage cavity. The stretching assembly 4 is installed above the support plate 101. The stretching assembly 4 includes an internal threaded ring 401, which is threadedly engaged with the first storage groove 203. A drive gear ring 402 is fixedly provided on the circumferential side of the internal threaded ring 401. The power drive assembly 5 is installed on the top of the support plate 101. The power drive assembly 5 includes a drive rack 501, which meshes with the drive gear ring 402.

[0028] Specifically, two positioning plates 103 are fixedly installed on the top of the bearing plate 101. A drive motor 104 is installed on one side of one positioning plate 103. A first support plate 105 and a second support plate 106 are fixedly installed on the top of the bearing plate 101. The first support plate 105 is fixedly connected to the first limiting member 201, and the first support plate 105 and the second limiting member 202 are slidably engaged.

[0029] Furthermore, the first support plate 105 and the second support plate 106 are connected by a connecting plate 107. The detection system 102 is installed on the surface of the connecting plate 107. Two limiting plates 108 are fixedly provided on one side of the first support plate 105. A first elastic element 205 is fixedly provided at the bottom of the limiting plate 108. A first connecting block 206 is fixedly provided at one end of the first elastic element 205. The first connecting block 206 and the first support plate 105 are slidably engaged. The first connecting block 206 and the second limiting element 202 are fixedly connected. A second connecting block 207 is fixedly provided on both sides of the first limiting element 201. An electromagnet is fixedly provided at the top of the second connecting block 207. A permanent magnet is fixedly provided at the bottom of the first connecting block 206. The electromagnet and the permanent magnet are magnetically attracted to each other.

[0030] The specific operation process of this embodiment is as follows: In the initial state, the tensioning component 4 is located at the far right of the bearing plate 101 (see Appendix for details). Figure 1 (As shown), the second limiting member 202 and the first limiting member 201 are not in contact. The fastener 3 is placed in the first storage slot 203. Then, the electromagnet is energized and magnetized. The first connecting block 206 moves downward, causing the second limiting member 202 to move downward. The first elastic member 205 is stretched. At this time, the first storage slot 203 and the second storage slot 204 combine to form a storage cavity. The fastener 3 is in the storage cavity. Then, the stretching component 4 is moved to the left, so that the cylindrical structure at the fastener 3 is sleeved with the internal thread ring 401. Then, the power drive component 5 drives the drive gear ring 402 to rotate. The internal thread ring 401 rotates synchronously and connects with the fastener 3. Then, the stretching component 4 is moved in the opposite direction, so that the fastener 3... The fastener 3 is stretched, and during this process, the detection system 102 performs a corresponding stress test on the fastener 3. After the tensile test of the fastener 3 is completed, the tensile assembly 4 is controlled to move to the left again. At this time, the power drive assembly 5 is controlled to rotate in the opposite direction, driving the drive gear ring 402 to rotate in the opposite direction. The internal thread ring 401 rotates synchronously and gradually disengages from the fastener 3. Then, the tensile assembly 4 is controlled to move in the opposite direction back to the initial position. At this time, the electromagnet is de-energized and demagnetized. Under the action of the first elastic element 205, the first connecting block 206 moves in the opposite direction, driving the second limiting element 202 to move in the opposite direction until the second limiting element 202 returns to the initial state. Then, the staff can replace the fastener 3 to be tested and perform the above test operation.

[0031] In the second specific embodiment, based on the first specific embodiment, two guide rods 109 are fixedly installed on one side of the second support plate 106. A cylinder 403 is installed on the side of the second support plate 106 near the guide rods 109. A connecting plate 404 is fixedly installed at the output end of the cylinder 403. A threaded connecting rod 405 is fixedly installed on one side of the connecting plate 404. The threaded connecting rod 405 is threadedly engaged with the internal threaded ring 401.

[0032] Specifically, a support frame 406 is slidably mounted on the top of the support plate 101. The support frame 406 is fixedly connected to the connecting plate 404, and the support frame 406 is slidably engaged with the guide rod 109. Two second elastic elements 407 are fixedly mounted on one side of the support frame 406. One end of the second elastic element 407 is fixedly connected to the second support plate 106. When the connecting plate 404 moves, it drives the support frame 406 to move along the guide rod 109, and the second elastic elements 407 are stretched. When the connecting plate 404 moves in the opposite direction, the support frame 406 moves in the opposite direction along the guide rod 109. This process stretches the fastener 3. If the fastener 3 breaks during the stretching process, the second elastic element 407 can play a buffering role to prevent the instrument from being scratched by broken metal fragments.

[0033] Furthermore, a movable frame 502 is fixedly installed at the bottom of the drive rack 501. The movable frame 502 is slidably engaged with the support plate 101. A positioning threaded rod 503 is rotatably installed between the two positioning plates 103. The output end of the drive motor 104 is fixedly connected to the positioning threaded rod 503. The positioning threaded rod 503 is threadedly engaged with the movable frame 502.

[0034] The operation process of this embodiment is as follows: When the fastener 3 is clamped by the limiting component 2, the output end of the control cylinder 403 drives the connecting plate 404 to move, the threaded connecting rod 405 moves to drive the internal threaded ring 401 to move, and the drive gear ring 402 moves synchronously until the internal threaded ring 401 is completely sleeved on the circumference of the cylindrical structure of the fastener 3. At this time, the drive gear ring 402 is at the top of the drive rack 501. Then, the drive motor 104 drives the positioning threaded rod 503 to rotate, the moving frame 502 moves to drive the drive rack 501 to move, and the drive rack 501 and the drive gear ring 402 gradually mesh. After the meshing is completed, the drive rack 501 drives the drive gear ring 402 to rotate. During this process, the internal threaded ring 401 and the fastener 3 are gradually connected. After the internal threaded ring 401 and the fastener 3 are connected, the output end of the control cylinder 403 moves in the opposite direction to drive the connecting plate 404 to move in the opposite direction, the threaded connecting rod 405 moves in the opposite direction to drive the internal threaded ring 401 to move in the opposite direction, and the fastener 3 is continuously stretched. After stretching to a certain length, the performance of the fastener 3 is detected and judged by the detection system 102. After the detection is completed, the stretching of the fastener 3 is stopped, and the output end of the cylinder 403 is controlled to move in the reverse direction, driving the connecting plate 404 to move in the reverse direction. The threaded connecting rod 405 moves in the reverse direction, driving the internal threaded ring 401 to move in the reverse direction. The drive gear ring 402 moves in the reverse direction and moves to the top of the drive rack 501 again. Then, the drive motor 104 is controlled to rotate in the reverse direction, driving the positioning threaded rod 503 to rotate in the reverse direction. The moving frame 502 moves in the reverse direction, driving the drive rack 501 to move in the reverse direction. The drive rack 501 and the drive gear ring 402 gradually mesh. After the meshing is completed, the drive rack 501 drives the drive gear ring 402 to rotate until the internal threaded ring 401 and the fastener 3 are gradually disconnected. Then, the output end of the cylinder 403 is controlled to move towards the second support plate 106. The connecting plate 404 moves synchronously. The threaded connecting rod 405 moves, driving the internal threaded ring 401 to move. The drive gear ring 402 moves until it returns to the initial state.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A testing device for tensile testing of automotive fasteners, characterized in that, include: Support component (1), which is installed in the outer protective chamber, includes a support plate (101) and a detection system (102) is installed on the support plate (101). A limiting component (2) is installed above the support plate (101). The limiting component (2) includes a first limiting member (201) and a second limiting member (202). The first limiting member (201) has a first storage groove (203) at its top, and a fastener (3) is stored inside the first storage groove (203). The second limiting member (202) has a second storage groove (204) at its bottom. The first storage groove (203) and the second storage groove (204) are combined to form a storage cavity. The tensioning assembly (4) is installed above the bearing plate (101). The tensioning assembly (4) includes an internal threaded ring (401), which is threadedly engaged with the first storage groove (203). A drive toothed ring (402) is fixedly provided on the circumferential side of the internal threaded ring (401). And a power drive assembly (5), which is mounted on the top of the support plate (101), the power drive assembly (5) including a drive rack (501) that meshes with a drive ring (402).

2. The testing device for tensile testing of automotive fasteners according to claim 1, characterized in that, Two positioning plates (103) are fixedly installed on the top of the bearing plate (101), and a drive motor (104) is installed on one side of one of the positioning plates (103). The top of the bearing plate (101) is fixedly provided with a first support plate (105) and a second support plate (106). The first support plate (105) is fixedly connected to the first limiting member (201), and the first support plate (105) and the second limiting member (202) are slidably engaged.

3. The testing device for tensile testing of automotive fasteners according to claim 2, characterized in that, The first support plate (105) and the second support plate (106) are connected by a connecting plate (107). The detection system (102) is installed on the surface of the connecting plate (107). Two limiting plates (108) are fixedly provided on one side of the first support plate (105).

4. The testing device for tensile testing of automotive fasteners according to claim 3, characterized in that, The bottom of the limiting plate (108) is fixedly provided with a first elastic element (205), and a first connecting block (206) is fixedly provided at one end of the first elastic element (205). The first connecting block (206) and the first support plate (105) slide together.

5. The testing device for tensile testing of automotive fasteners according to claim 4, characterized in that, The first connecting block (206) is fixedly connected to the second limiting member (202), and the second connecting block (207) is fixedly provided on both sides of the first limiting member (201). An electromagnet is fixedly installed on the top of the second connecting block (207), and a permanent magnet is fixedly installed on the bottom of the first connecting block (206). The electromagnet and the permanent magnet are magnetically attracted to each other.

6. The testing device for tensile testing of automotive fasteners according to claim 5, characterized in that, Two guide rods (109) are fixedly installed on one side of the second support plate (106), and a cylinder (403) is installed on the side of the second support plate (106) near the guide rods (109). A connecting plate (404) is fixedly installed at the output end of the cylinder (403). A threaded connecting rod (405) is fixedly provided on one side of the connecting plate (404), and the threaded connecting rod (405) is threadedly engaged with the internal threaded ring (401).

7. The testing device for tensile testing of automotive fasteners according to claim 6, characterized in that, A support frame (406) is slidably provided on the top of the bearing plate (101). The support frame (406) is fixedly connected to the connecting plate (404), and the support frame (406) is slidably engaged with the guide rod (109). Two second elastic members (407) are fixedly installed on one side of the support frame (406), and one end of the second elastic member (407) is fixedly connected to the second support plate (106).

8. The testing device for tensile testing of automotive fasteners according to claim 7, characterized in that, A movable frame (502) is fixedly provided at the bottom of the drive rack (501), and the movable frame (502) slides in cooperation with the support plate (101); A positioning threaded rod (503) is rotatably provided between the two positioning plates (103), and the output end of the drive motor (104) is fixedly connected to the positioning threaded rod (503). The positioning threaded rod (503) is threadedly engaged with the moving frame (502).

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