Large hexagon bolt preload testing device
By designing a testing device for components such as the base frame and servo power system, the problem of inconvenient testing caused by the varying lengths of large hexagonal bolts was solved, enabling convenient and accurate preload testing.
Patent Information
- Application Number
- CN202422926426.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing large hexagonal bolt testing devices are inconvenient to operate because the bolts are of varying lengths, resulting in excessively heavy tooling and the need for separate testing.
A testing device was designed, comprising a base frame, a servo power system, a dynamic torque sensor, a drive sleeve, a pitch sensor, and a guide rail assembly. The servo power system outputs rotational speed and torque to achieve preload testing of large hexagonal bolts of different lengths.
It enables convenient and accurate testing of large hexagonal bolts of different lengths, reduces the need for tooling changes and separate equipment testing, and improves operational convenience and testing accuracy.
Smart Images
Figure CN223551215U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of application technology for preload testing of large hexagonal bolts, and more specifically, to a preload testing device for large hexagonal bolts. Background Technology
[0002] In the testing of large hexagonal bolts, bolts of varying lengths and specifications are often encountered, necessitating the design of fixtures of different lengths. However, during testing, the use of different fixtures for the same type of large hexagonal bolt can lead to fixtures that are too long and heavy, causing inconvenience to the testing personnel. Sometimes, it is necessary to use two separate devices to test the preload of large hexagonal bolts of different lengths or widths. Therefore, a preload testing method compatible with large hexagonal bolts of different lengths and models is needed.
[0003] To address the aforementioned issues, this application provides a preload testing device for large hexagonal bolts. Utility Model Content
[0004] The large hexagonal bolt preload testing device provided in this application adopts the following technical solution:
[0005] A preload testing device for large hexagonal bolts includes a base frame. A servo power system is fixedly installed on the left side of the top surface of the base frame. A drive sleeve is installed on the output end of the servo motor of the servo power system, and a dynamic torque sensor is installed on the output end of the servo motor of the servo power system. Two guide rail assemblies are installed parallel to each other on the top surface of the base frame, and an adjusting seat is slidably installed on the two guide rail assemblies. An adjustment distance sensor is installed inside the adjusting seat, and a large hexagonal bolt specimen corresponding to the drive sleeve is set in the notch of the adjustment distance sensor. One end of the large hexagonal bolt specimen extends to the outside of the adjusting seat.
[0006] The above technical solution comprises a base frame, a servo power system, a dynamic torque sensor, a drive sleeve, a large hexagonal bolt specimen, an adjustment sensor, and a guide rail assembly, forming a large hexagonal bolt preload testing device.
[0007] Furthermore, a guide sleeve is fixed on each of the left and right sides of the adjusting seat, and the two guide sleeves are slidably connected to the two guide rail assemblies respectively. The surface of the guide sleeve is provided with a first through hole, and the surface of the two guide rail assemblies is provided with a plurality of second through holes respectively.
[0008] The above technical solution allows for easy adjustment of the adjustment seat position, making it suitable for testing large hexagonal bolt specimens of different sizes.
[0009] Furthermore, the servo power system is equipped with a control panel, and the output terminal of the control panel is electrically connected to the servo motor of the servo power system.
[0010] Through the above technical solution, the servo power system outputs speed and torque to drive the dynamic torque sensor, which in turn drives the drive sleeve to apply a preload to the large hexagonal bolt, while simultaneously generating a preload axial force.
[0011] Furthermore, a slide rail is provided between the two guide rail assemblies, and the slide rail is fixedly connected to the base frame. A positioning slide is fixed to the bottom of the dynamic torque sensor, and the positioning slide is slidably connected to the slide rail between the two guide rail assemblies.
[0012] The above technical solution makes it easy to guide the drive sleeve.
[0013] Furthermore, the slide rail is located directly below the adjusting seat, and the installation height of the adjusting seat is higher than the height of the slide rail.
[0014] The above technical solution makes it easy to guide the drive sleeve.
[0015] Furthermore, a storage box is provided on the left side inside the base frame, and several storage drawers are slidably installed on the right side inside the base frame, and several casters are installed at the bottom of the base frame.
[0016] The above technical solution makes it easy to store the tools needed for testing large hexagonal bolts.
[0017] In summary, this application includes the following beneficial technical effects:
[0018] The large hexagonal bolt preload testing device comprises a base frame, servo power system, dynamic torque sensor, drive sleeve, large hexagonal bolt specimen, adjustment sensor, and guide rail assembly. It utilizes a direct adjustment mechanism within the adjustment sensor to control the installation length of the large hexagonal bolt specimen, eliminating the need to change tooling or disassemble the device for testing on other equipment due to varying bolt lengths. The device directly outputs rotational speed and preload force through its own power servo system, providing convenience for operators and ensuring accurate and reliable testing. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this application;
[0020] Figure 2 This is a front view of this application;
[0021] Figure 3 This is a top view of this application.
[0022] Explanation of the labels in the diagram:
[0023] 1. Base frame; 2. Servo power system; 3. Adjustment seat; 4. Dynamic torque sensor; 5. Drive sleeve; 6. Adjustment distance sensor; 7. Large hexagonal bolt specimen; 8. Slide rail; 9. Guide sleeve; 10. Guide rail assembly; 11. Positioning slide; 12. First through hole; 13. Second through hole. Detailed Implementation
[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example
[0027] This application discloses a preload testing device for large hexagonal bolts. Please refer to [link / reference]. Figure 1-3The device includes a base frame 1, a servo power system 2 fixedly mounted on the left side of the top surface of the base frame 1, a drive sleeve 5 mounted on the output end of the servo motor of the servo power system 2, and a dynamic torque sensor 4 mounted on the output end of the servo motor of the servo power system 2. Two guide rail assemblies 10 are mounted parallel to each other on the top surface of the base frame 1, and an adjustment seat 3 is slidably mounted on the two guide rail assemblies 10. An adjustment distance sensor 6 is installed inside the adjustment seat 3, and a large hexagonal bolt specimen 7 corresponding to the drive sleeve 5 is set at the notch of the adjustment distance sensor 6. One end of the large hexagonal bolt specimen 7 extends to the outside of the adjustment seat 3. The base frame 1, servo power system 2, dynamic torque sensor 4, drive sleeve 5, large hexagonal bolt specimen 7, adjustment distance sensor 6 and guide rail assembly 10 constitute a large hexagonal bolt preload testing device. The dynamic torque sensor 4 and adjustment distance sensor 6 are equipped with display panels for easy recording and observation of the large hexagonal bolt preload test data.
[0028] Please see Figure 1-3 A guide sleeve 9 is fixed on each of the left and right sides of the adjusting seat 3, and the two guide sleeves 9 are slidably connected to the two guide rail assemblies 10 respectively. The surface of the guide sleeve 9 is provided with a first through hole 12, and the surface of the two guide rail assemblies 10 is provided with a number of second through holes 13 respectively. Through the first through hole 12 of the guide sleeve 9 and the number of second through holes 13 of the guide rail assembly 10, a bolt can be threaded through the first through hole 12 and threaded to one of the second through holes 13 of the guide rail assembly 10 so as to lock after the position of the adjusting seat 3 is adjusted. This is suitable for preload testing of large hexagonal bolt specimens 7 of different sizes.
[0029] Please see Figure 1-3 The servo power system 2 is equipped with a control panel, and the output terminal of the control panel is electrically connected to the servo motor of the servo power system 2. For the servo power system 2, the contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0030] Please see Figure 1-3 A slide rail 8 is provided between the two guide rail assemblies 10, and the slide rail 8 is fixedly connected to the base frame 1. A positioning slide 11 is fixed at the bottom of the dynamic torque sensor 4, and the positioning slide 11 is slidably connected to the slide rail 8 between the two guide rail assemblies 10. The positioning slide 11 and the slide rail 8 facilitate the guidance of the drive sleeve 5.
[0031] Please see Figure 1-3 The slide rail 8 is located directly below the adjusting seat 3, and the installation height of the adjusting seat 3 is higher than the height of the slide rail 8, so that the two do not obstruct or interfere with each other.
[0032] Please see Figure 1The base frame 1 has a storage box on the left side inside, and several storage drawers are slidably installed on the right side inside. The base frame 1 also has several casters at the bottom, which makes it easy to store the tools needed for testing large hexagonal bolts and increases space utilization.
[0033] The implementation principle of this embodiment is as follows: In use, the large hexagonal bolt specimen 7 is installed in the adjustment sensor 6. The drive sleeve 5 is placed on the head of the large hexagonal bolt specimen 7. The servo power system 2 is started to output the speed and torque to drive the dynamic torque sensor 4. The dynamic torque sensor 4 drives the drive sleeve 5 to apply a preload to the large hexagonal bolt specimen 7, and at the same time, a pre-tightening axial force is generated. The preload is tested by comparing the load value displayed by the standard dynamic torque sensor 4 with that of the adjustment sensor 6. The preload can be set at any calibration point within the preload range. The operation is simple and intuitive, the control is stable, and the test is accurate.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A preload testing device for large hexagonal bolts, comprising a base frame (1), characterized in that: A servo power system (2) is fixedly installed on the left side of the top surface of the base frame (1), and a drive sleeve (5) is installed on the servo motor output end of the servo power system (2), and a dynamic torque sensor (4) is installed on the servo motor output end of the servo power system (2). Two guide rail assemblies (10) are installed in parallel on the top surface of the base frame (1), and an adjustment seat (3) is slidably installed on the two guide rail assemblies (10). An adjustment distance sensor (6) is installed inside the adjustment seat (3), and a large hexagonal bolt specimen (7) corresponding to the drive sleeve (5) is provided at the notch of the adjustment distance sensor (6). One end of the large hexagonal bolt specimen (7) extends to the outside of the adjustment seat (3).
2. The preload testing device for large hexagonal bolts according to claim 1, characterized in that: The adjusting seat (3) has a guide sleeve (9) fixed on its left and right sides respectively, and the two guide sleeves (9) are slidably connected to the two guide rail assemblies (10) respectively. The surface of the guide sleeve (9) is provided with a first through hole (12), and the surface of the two guide rail assemblies (10) is provided with a number of second through holes (13).
3. The preload testing device for large hexagonal bolts according to claim 1, characterized in that: The servo power system (2) is equipped with a control panel, and the output end of the control panel is electrically connected to the servo motor of the servo power system (2).
4. The preload testing device for large hexagonal bolts according to claim 1, characterized in that: A slide rail (8) is provided between the two guide rail assemblies (10), and the slide rail (8) is fixedly connected to the base frame (1). The bottom of the dynamic torque sensor (4) is fixed with a positioning slide (11), and the positioning slide (11) is slidably connected to the slide rail (8) between the two guide rail assemblies (10).
5. The preload testing device for large hexagonal bolts according to claim 4, characterized in that: The slide rail (8) is located directly below the adjusting seat (3), and the installation height of the adjusting seat (3) is higher than the height of the slide rail (8).
6. The preload testing device for large hexagonal bolts according to claim 1, characterized in that: The base frame (1) has a storage box on the left side inside, and several storage drawers are slidably installed on the right side inside the base frame (1). Several casters are installed at the bottom of the base frame (1).