A bolt retreat-preventing performance testing device

Abstract

This utility model discloses a bolt anti-retraction performance testing device, including a test platform, a bolt to be tested disposed on the top of the test platform, a test seat threadedly connected to the outer wall of the bolt to be tested, and a driving mechanism disposed between the test seat and the test platform; the driving mechanism includes a servo motor, a transmission plate, a connecting column, a transmission seat, a slide rail, and a slide groove; the servo motor is fixedly connected to the top of the test platform, the transmission plate is fixedly connected to the conveying end of the servo motor, and the connecting column is fixedly connected to the top of the transmission plate. This utility model relates to the technical field of bolt testing equipment. This bolt anti-retraction performance testing device realizes the simulation of the vibration effect during actual work through reciprocating motion, providing the bolt to be tested with a continuous and stable vibration source, and a scenario where the vibration parameters are controllable and the vibration intensity is sufficient, so that the test results meet the working requirements of the actual scenario and ensure the accuracy of the test data.

Description

Technical Field

[0001] This utility model relates to the technical field of bolt testing equipment, specifically a bolt anti-loosening performance testing device. Background Technology

[0002] Bolts are a type of fastener consisting of a head and a shank (a cylinder with external threads). They are used in conjunction with nuts to fasten two parts with through holes.

[0003] Traditional bolt anti-retraction performance testing devices mostly use uncontrollable methods such as manual hammering and natural vibration of the test bench to apply interference to simulate actual working scenarios and test the anti-retraction performance of bolts.

[0004] However, in actual use, the lack of a continuous and stable vibration source in traditional testing devices may make the vibration parameters uncontrollable, which may lead to the test results not matching the actual needs of different scenarios. At the same time, the bolts under test may not be able to reproduce the loosening failure under long-term working conditions due to insufficient vibration intensity and short duration, which may seriously affect the accuracy of the final test data. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a bolt anti-loosening performance testing device. This device solves the problem that in actual use, traditional testing devices lack a continuous and stable vibration source, which may cause uncontrollable vibration parameters and result in test results that cannot match the actual needs of different scenarios. In addition, the bolt under test may fail to reproduce the loosening failure under long-term working conditions due to insufficient vibration intensity and short duration, which seriously affects the accuracy of the final test data.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bolt anti-retraction performance testing device, comprising a test platform, a bolt to be tested disposed on the top of the test platform, a test seat threadedly connected to the outer wall of the bolt to be tested, and a driving mechanism disposed between the test seat and the test platform; the driving mechanism comprises a servo motor, a transmission plate, a connecting column, a transmission seat, a slide rail, and a slide groove; the servo motor is fixedly connected to the top of the test platform, the transmission plate is fixedly connected to the conveying end of the servo motor, the connecting column is fixedly connected to the top of the transmission plate, the transmission seat is disposed on the top of the transmission plate, the slide rail is slidably connected to the outer wall of the transmission seat, and a slide groove is formed on the surface of the transmission seat, the slide groove being sleeved on the outer wall of the connecting column.

[0007] Preferably, a fixing mechanism is provided above the transmission seat; the fixing mechanism includes a connecting seat, a slider, a connecting plate, a fastener, and a fastening nut; the connecting seat is provided above the transmission seat, the inner wall of the connecting seat is slidably connected to the slider, the slider is fixedly connected to the bottom of the test seat, connecting plates are provided on both sides of the slider, the two connecting plates are respectively attached to the outer walls of the connecting seat, the outer walls of the two connecting plates that are close to each other are respectively fixedly connected to the outer walls of the transmission seat, a fastener is provided above the transmission seat, the fastener sequentially passes through one connecting plate, the connecting seat, the slider and the other connecting plate, and extends to the outer wall of the other connecting plate away from the connecting seat, the end of the fastener is threadedly connected to a fastening nut, the outer wall of the fastening nut is attached to the outer wall of the other connecting plate away from the connecting seat.

[0008] Preferably, a first plate is fitted onto the outer wall of the bolt to be tested, a second plate is attached to the bottom of the first plate, the inner wall of the second plate is fitted onto the outer wall of the bolt to be tested, and the bottom of the second plate is attached to the top of the test base.

[0009] Preferably, a support rod is fixedly connected to the side of the outer wall of the slide away from the transmission seat, and the bottom of the support rod is fixedly connected to the top of the test bench.

[0010] Preferably, the test platform is fixedly connected to support legs at each of the four bottom corners. Beneficial effects

[0011] This utility model provides a bolt anti-retraction performance testing device. It has the following advantages: This bolt anti-retraction performance testing device, through the cooperation of a servo motor, transmission plate, connecting column, transmission seat, slide rail, and slide groove, achieves the simulation of vibration effects during actual work through reciprocating motion. It provides the bolt under test with a continuous and stable vibration source, and the vibration parameters are controllable with sufficient vibration intensity, ensuring that the test results meet the working requirements of the actual scenario and guaranteeing the accuracy of the test data.

[0012] By using the connection seat, slider, connecting plate, fasteners and fastening nuts, the test seat can be quickly changed according to the test requirements, which makes it convenient for testers to test different types of bolts. This not only improves the adaptability of the test device, but also greatly increases the compatibility between the test device and the bolts to be tested. Attached Figure Description

[0013] Figure 1 This is an appearance drawing of the present utility model;

[0014] Figure 2 for Figure 1 Exploded view;

[0015] Figure 3 for Figure 1 A structural diagram of the central connecting column, transmission seat, and slide rail;

[0016] Figure 4 for Figure 1 A schematic diagram of the structure of the bolt to be tested, the test seat, and the first plate.

[0017] In the diagram: 1. Test bench; 2. Bolt to be tested; 3. Test seat; 4. Servo motor; 5. Transmission plate; 6. Connecting column; 7. Transmission seat; 8. Slide rail; 9. Slide groove; 10. Connecting seat; 11. Slider; 12. Connecting plate; 13. Fastener; 14. Fastening nut; 15. First plate; 16. Second plate; 17. Support rod; 18. Support leg. Detailed Implementation

[0018] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In practical use, traditional testing devices lack a continuous and stable vibration source, which may make the vibration parameters uncontrollable. This may result in test results that cannot match the actual needs of different scenarios. At the same time, the bolts under test may fail to reproduce the loosening failure under long-term working conditions due to insufficient vibration intensity and short duration, which may seriously affect the accuracy of the final test data.

[0020] In view of this, the present invention provides a bolt anti-retraction performance testing device. This bolt anti-retraction performance testing device, through the cooperation of a servo motor, transmission plate, connecting column, transmission seat, slide rail and slide groove, realizes the vibration effect of actual working through reciprocating motion, providing the bolt under test with a continuous and stable vibration source, and a scenario where the vibration parameters are controllable and the vibration intensity is sufficient, so that the test results meet the working requirements of the actual scenario and ensure the accuracy of the test data.

[0021] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components are connected in the order of operation. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the art. The following mainly introduces the working principle and process.

[0023] Example 1, by Figure 1-4 It is known that a bolt anti-retraction performance testing device includes a test platform 1, a bolt 2 to be tested is arranged on the top of the test platform 1, a test seat 3 is threadedly connected to the outer wall of the bolt 2 to be tested, and a driving mechanism is arranged between the test seat 3 and the test platform 1; the driving mechanism includes a servo motor 4, a transmission plate 5, a connecting column 6, a transmission seat 7, a slide rail 8 and a slide groove 9; the servo motor 4 is fixedly connected to the top of the test platform 1, the transmission plate 5 is fixedly connected to the conveying end of the servo motor 4, the connecting column 6 is fixedly connected to the top of the transmission plate 5, the transmission seat 7 is arranged on the top of the transmission plate 5, the slide rail 8 is slidably connected to the outer wall of the transmission seat 7, and the slide groove 9 is opened on the surface of the transmission seat 7, and the slide groove 9 is sleeved on the outer wall of the connecting column 6;

[0024] In the specific implementation process, it is worth noting that the test platform 1 is a square plate, and its material can be stainless steel. The bolt to be tested 2 can be selected according to the actual testing requirements, as long as it meets the testing needs. For example, it can be made of alloy steel. The test seat 3 is similar to a quadrangular prism, and its material can be 40Cr alloy steel. It has a threaded hole machined in the center of its top. The threaded hole on the top of the test seat 3 can be machined according to the actual situation of the bolt to be tested 2. The model of the servo motor 4 can be selected according to actual needs, as long as it meets the working requirements. For example, it can be ASD-B2-1521-B. The external controller can be S7-1200. The transmission plate 5 is a circular plate, and its center has a circular through hole for connecting to the output end of the servo motor 4. Its material can be 40Cr alloy steel. The connecting column 6 is similar to a cylinder, and its material can be GCr15 bearing steel. The transmission seat 7 is similar to a rectangular plate, and its outer walls are fixed on both the front and rear sides. A limiting plate is connected, which can slide inside the slide rail 8. There are two slide rails 8, symmetrically arranged, with a cross-section similar to a 'C' shape. The material can be GCr15 bearing steel. The slide groove 9 is opened on the outer wall of the transmission seat 7, passing through the bottom and bottom. The inner wall of the slide groove 9 is machined into a semi-circle front and back to ensure the sliding effect of the connecting column 6. In actual testing, after the tester fixes the bolt 2 to be tested, the external power supply of the servo motor 4 is connected through the external controller and the servo motor 4 is started. The servo motor 4 drives the transmission plate 5 to rotate, and the transmission plate 5 drives the connecting column 6 to make a circular motion. The connecting column 6 slides inside the slide groove 9. The slide groove 9 is subjected to the force of the connecting column 6 to achieve left and right translation, which in turn drives the test seat 3 to move through the fixing mechanism. The test seat 3 drives the bolt 2 to move. The continuous shaking of the bolt 2 to be tested and the test seat 3 simulates the vibration effect during actual work, thereby achieving the purpose of testing the anti-retraction performance of the bolt 2 to be tested and improving the accuracy of the bolt anti-retraction performance testing device.

[0025] Furthermore, a fixing mechanism is provided above the transmission seat 7; the fixing mechanism includes a connecting seat 10, a slider 11, a connecting plate 12, a fastener 13, and a fastening nut 14; the connecting seat 10 is provided above the transmission seat 7, the inner wall of the connecting seat 10 is slidably connected to the slider 11, the slider 11 is fixedly connected to the bottom of the test seat 3, both sides of the slider 11 are provided with connecting plates 12, the two connecting plates 12 are respectively attached to the outer walls of the connecting seat 10, the sides of the outer walls of the two connecting plates 12 that are close to each other are respectively fixedly connected to the outer walls of the transmission seat 7, the transmission seat 7 is provided above the fastener 13, the fastener 13 passes through one connecting plate 12, the connecting seat 10, the slider 11 and another connecting plate 12 in sequence, and extends to the side of the outer wall of the other connecting plate 12 away from the connecting seat 10, the end of the fastener 13 is threadedly connected to the fastening nut 14, the outer wall of the fastening nut 14 is attached to the side of the outer wall of the other connecting plate 12 away from the connecting seat 10;

[0026] In the specific implementation process, it is worth noting that the connecting seat 10 is similar to a quadrangular prism and can be made of stainless steel. Its top is machined with a 'T'-shaped groove running through the front and rear outer walls, and both sides of its outer walls have circular through holes connected to the 'T'-shaped groove. The slider 11 has a 'T'-shaped cross-section and circular through holes machined on its side walls. Two connecting plates 12 are provided; each is rectangular and has circular through holes machined on its side walls. Fasteners 13 are external hexagonal bolts, and their quantity can be set according to actual needs to meet operational requirements. The fastening nuts 14 are selected to match fasteners 13. In actual testing, when the test seat 3 needs to be replaced, the tester holds fastener 13 with one hand and... By using a tool to rotate the fastening nut 14 counterclockwise, the fastening nut 14 is removed from the outer wall of the fastener 13. Then, the fastener 13 is moved so that it is pulled out from the through hole of the connecting seat 10, the slider 11 and the connecting plate 12. Then, the test seat 3 is pushed, and the test seat 3 drives the slider 11 to slide along the inner wall of the connecting seat 10 until the slider 11 leaves the inner wall of the connecting seat 10. At this time, the new test seat 3 with the slider 11 is slid back into the interior of the connecting seat 10, and the above actions are reversed. The connecting seat 10, the slider 11 and the connecting plate 12 are fixed together by the fastener 13 and the fastening nut 14, thus improving the compatibility of the bolt anti-retraction performance testing device with different specifications of bolts 2 to be tested.

[0027] Furthermore, the outer wall of the bolt to be tested 2 is fitted with a first plate 15, the bottom of the first plate 15 is attached to a second plate 16, the inner wall of the second plate 16 is fitted to the outer wall of the bolt to be tested 2, and the bottom of the second plate 16 is attached to the top of the test seat 3.

[0028] In the specific implementation process, it is worth noting that the first plate 15 is generally similar to a square plate with a circular through hole machined in the center. Its material can be selected according to actual needs as long as it meets the test requirements. For example, it can be carbon structural steel. The second plate 16 is generally similar to a circular plate with a circular through hole in the center. Its material can be the same as the first plate 15. The first plate 15 and the second plate 16 are used to simulate the parts connected by bolts in actual working conditions. The inner wall of its through hole can be provided with internal threads as needed to meet the needs of different working occasions and improve the accuracy of the bolt anti-retraction performance test structure.

[0029] Example 2, by Figure 1-4 It can be seen that a support rod 17 is fixedly connected to the side of the outer wall of the slide 8 away from the transmission seat 7, and the bottom of the support rod 17 is fixedly connected to the top of the test bench 1.

[0030] In the specific implementation process, it is worth noting that there are two support rods 17, which are similar to square rods. The material of the support rods 17 can be stainless steel. The support rods 17 provide support for the slide rail 8, thereby improving the stability of the slide rail 8.

[0031] Furthermore, support legs 18 are fixedly connected to the four corners of the bottom of the test stand 1;

[0032] In the specific implementation process, it is worth noting that there are four support legs 18, which are square rods in shape. The bottom of each support leg 18 is fixedly connected to a damping pad. The support legs 18 provide support for the entire test device, thereby improving the structural stability of the bolt anti-retraction performance test device.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the anti-backout performance of a screw, comprising a test bench (1), characterized in that: A test bolt (2) is provided above the test bench (1), and a test seat (3) is threadedly connected to the outer wall of the test bolt (2). A drive mechanism is provided between the test seat (3) and the test bench (1). The drive mechanism includes a servo motor (4), a transmission plate (5), a connecting column (6), a transmission seat (7), a slide rail (8), and a slide groove (9); The servo motor (4) is fixedly connected to the top of the test bench (1). The transmission end of the servo motor (4) is fixedly connected to the transmission plate (5). The top of the transmission plate (5) is fixedly connected to the connecting column (6). A transmission seat (7) is provided above the transmission plate (5). A slide rail (8) is slidably connected to the outer wall of the transmission seat (7). A groove (9) is opened on the surface of the transmission seat (7). The groove (9) is sleeved on the outer wall of the connecting column (6).

2. The bolt back-off performance testing device of claim 1, wherein: A fixing mechanism is provided above the transmission seat (7); The fixing mechanism includes a connecting seat (10), a slider (11), a connecting plate (12), a fastener (13), and a fastening nut (14). The connecting seat (10) is located above the transmission seat (7). A slider (11) is slidably connected to the inner wall of the connecting seat (10). The slider (11) is fixedly connected to the bottom of the test seat (3). A connecting plate (12) is provided on both sides of the slider (11). The two connecting plates (12) are respectively attached to the outer walls of the connecting seat (10). The outer walls of the two connecting plates (12) are respectively fixedly connected to the outer walls of the transmission seat (7) on the side that is close to each other. A fastener (13) is provided above the transmission seat (7). The fastener (13) passes through one connecting plate (12), the connecting seat (10), the slider (11) and the other connecting plate (12) in sequence, and extends to the outer wall of the other connecting plate (12) away from the connecting seat (10). A fastening nut (14) is threaded to the end of the fastener (13). The outer wall of the fastening nut (14) is attached to the outer wall of the other connecting plate (12) away from the connecting seat (10).

3. The bolt anti-loosening performance testing device according to claim 1, characterized in that: The outer wall of the bolt to be tested (2) is fitted with a first plate (15), the bottom of the first plate (15) is attached to a second plate (16), the inner wall of the second plate (16) is fitted to the outer wall of the bolt to be tested (2), and the bottom of the second plate (16) is attached to the top of the test seat (3).

4. The bolt anti-loosening performance testing device according to claim 1, characterized in that: A support rod (17) is fixedly connected to the side of the outer wall of the slide (8) away from the transmission seat (7), and the bottom of the support rod (17) is fixedly connected to the top of the test bench (1).

5. The bolt anti-loosening performance testing device according to claim 1, characterized in that: The test bench (1) is fixedly connected to four support legs (18) at the bottom corners.

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