Portable variable load thrust testing device and testing method
By designing a portable variable load thrust test device, using a 45° guide surface and a rolling slide rail connection, combined with a suspension system and a limiting device, the problem of insufficient portability and dynamic response speed of the load test device in the prior art is solved, and efficient and accurate evaluation of the performance of the thrust actuator is achieved.
Patent Information
- Application Number
- CN202411798810.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-04-22
AI Technical Summary
The load testing devices in the prior art lack portability, and the traditional methods have shortcomings in load regulation and dynamic response speed, making it difficult to meet the requirements for thrust actuator performance evaluation.
A portable variable load thrust test device is designed, using a 45° guide surface and a rolling slide rail connection, combined with a suspension system and a limiting device, which can simulate various load conditions and support precise testing of the durability and slip force of the thrust actuator.
It achieves portability and efficient testing performance, can accurately evaluate the performance of the thrust actuator, reduces the coefficient of friction, improves measurement accuracy, and simplifies the data acquisition process.
Smart Images
Figure CN119860912A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of actuator thrust verification, and in particular relates to a portable variable load thrust testing device and a testing method. Background Art
[0002] With the continuous improvement of industrial automation level, thrust actuators, as key components for achieving linear motion, have been widely used in many fields. In order to ensure the reliability and performance stability of thrust actuators in actual work, it is essential to accurately test their key mechanical indicators. These tests usually include parameters such as thrust durability and slip force to verify whether the product meets customer needs and safety standards.
[0003] Traditionally, the methods of simulating loads mainly include mechanical, pneumatic, hydraulic and electromagnetic. The mechanical device has a relatively simple structure and low cost, but it cannot provide fast cycle testing under constant load, and the process of adjusting the load is cumbersome and the load response time is long. In addition, when the actuator slip force test is required, this structure is difficult to achieve the required dynamic response. The pneumatic adjustable load device has the advantage of convenient load adjustment, but its load dynamic response time is relatively long, which limits its application in occasions requiring high precision and fast response. Although the hydraulic load test bench can provide a large load range, its structure is complex and the dynamic response speed is not ideal. In addition, hydraulic systems are often accompanied by high energy consumption and maintenance costs. The electromagnetic load adjustment method is not only convenient and fast, but also has a faster dynamic response speed. However, this type of equipment is bulky, has high energy consumption, and the initial investment and operating costs are at a high level.
[0004] In addition, the load test devices in the prior art generally lack portability. In the process of promoting new products, manufacturers often need to carry the test device to the site to show customers the key performance indicators of the product. Therefore, it is particularly important to develop a test device that has both good test performance and is easy to carry. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a portable variable load thrust testing device and a testing method.
[0006] The purpose of the present invention is to provide a test tool with a compact structure, easy operation, low cost and no additional energy consumption, so as to meet the needs of thrust actuator performance evaluation in different application scenarios. It can effectively simulate various load conditions and support accurate testing of thrust actuator durability and slip force, thereby providing strong support for product quality control and market expansion.
[0007] The portable variable load thrust testing device provided by the present invention comprises a bracket; the bracket has a longitudinal slide groove and a transverse slide groove; the longitudinal slide groove is slidably equipped with a longitudinal slider, and the transverse slide groove is slidably equipped with a transverse slider; the longitudinal slider is provided with a first guide surface on the side facing the transverse slider, and the first guide surface forms an angle of 45° with the sliding direction of the longitudinal slider; the transverse slider is provided with a second guide surface on the side facing the longitudinal slider, and the second guide surface forms an angle of 45° with the sliding direction of the transverse slider; the first guide surface is slidably abutted against the second guide surface; a suspension device is provided on the longitudinal slider to suspend a weight block with adjustable weight; a loading platform is provided on the bracket and located in the extension direction of the transverse slide groove to fix the thrust actuator to be tested.
[0008] As a further optimization solution of the testing device: a portion where the first guide surface contacts the second guide surface is coated with a lubricating medium.
[0009] As a further optimization solution for the test device: the longitudinal slide groove and the longitudinal slider are connected by a rolling slide rail, and the transverse slide groove and the transverse slider are connected by a rolling slide rail.
[0010] As a further optimization solution for the test device: the suspension device is a suspension cable, which is fixed to the bottom of the longitudinal slider; the bottom of the bracket has a through hole for the suspension device to pass through.
[0011] As a further optimization solution for the test device: a limit device is provided at the top of the longitudinal slide groove to limit the extreme position of the longitudinal slide block sliding upward.
[0012] As a further optimization scheme for the test device: a limit slider that can slide laterally is provided on the top of the longitudinal slide groove, and the surface of the limit slider has an inclined resistance surface, which blocks the upward movement path of the longitudinal slider; the angle between the resistance surface and the sliding direction of the limit slider is 45°; the top of the longitudinal slide groove is also equipped with an elastic element to prevent the limit slider from retreating.
[0013] As a further optimization solution for the test device: a pair of limit sliders are symmetrically arranged on the top of the longitudinal slide groove, and each limit slider is equipped with an elastic element that prevents it from retreating.
[0014] As a further optimization solution for the testing device: the tail end of the limit slider is columnar and partially exposes the outer side wall of the longitudinal slide groove; the tail end of the limit slider is provided with a ruler.
[0015] As a further optimization solution for the test device: the indicated value of the scale at the tail end of the limit slider corresponds to the thrust value applied to the limit slider after the elastic element is compressed.
[0016] The test method includes the following steps: Step 1: Place the test device on a flat and stable surface; Step 2: Fix the thrust actuator to be tested on the loading platform, and ensure that the front end of the push rod of the thrust actuator faces the transverse slider; Step 3: Hang a weight block on the longitudinal slide to simulate the expected loading conditions; Step 4: Start the thrust actuator to generate thrust and push the transverse slider to move along the transverse slide groove, so that the longitudinal slider moves upward along the longitudinal slide groove; Step 5: Evaluate the performance of the thrust actuator by monitoring the displacement of the longitudinal slider or the retreat of the limit slider.
[0017] As a further optimization scheme of the test method, it also includes adjusting the weight of the weight block to change the load applied to the thrust actuator, so as to test the performance of the thrust actuator under different load conditions.
[0018] As a further optimization scheme of the test method: it also includes directly measuring the thrust value applied to the limit slider by the elastic element after being compressed by observing the reading on the scale at the tail end of the limit slider, and evaluating the slipping force of the thrust actuator by combining the weight block and the weight of the longitudinal slider.
[0019] Beneficial Effects The portable variable load thrust test device provided by the present invention is highly portable and can accurately and intuitively evaluate the performance of the thrust actuator. It uses a 45° guide surface to achieve force direction conversion, and combined with the application of rolling slides and lubricating media, it greatly reduces the friction coefficient, ensuring the effective transmission of force and measurement accuracy during the test. In addition, different weight blocks are adjusted through the suspension system to simulate various load conditions under actual working conditions, making the test closer to real-life applications. The limit device set at the top effectively prevents the risk of accidental disengagement. The direct reading of the ruler not only simplifies the data acquisition process, but also enhances the intuitiveness and reliability of the results. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of the thrust test device.
[0021] Figure 3 This is a schematic diagram of the partial structure of the top of the thrust test device.
[0022] Figure 4 It is a schematic diagram of the coordination between the limit slider and the elastic element.
[0023] In the figure: 1. bracket; 2. longitudinal slider; 3. transverse slider; 4. limit slider; 5. elastic element; 9. weight block; 11. longitudinal slide groove; 12. transverse slide groove; 13. loading platform; 21. first guide surface; 29. suspension device; 31. second guide surface; 41. resistance surface. DETAILED DESCRIPTION
[0024] The present invention is further illustrated by the following examples, which are intended to more clearly illustrate the technical solution of the present invention and should not be construed as a limitation.
[0025] A portable variable load thrust test device is provided, which can be used to perform load test on a thrust actuator.
[0026] like Figures 1 to 4 As shown, the test device includes a bracket 1, which is the basic structure of the entire test device. The bracket 1 mainly includes a bottom plate and a column connected in one piece. The bracket 1 has a longitudinal slide 11 and a transverse slide 12; the longitudinal slide 11 is slidably equipped with a longitudinal slider 2, and the transverse slide 12 is slidably equipped with a transverse slider 3; the longitudinal slider 2 is provided with a first guide surface 21 on the side facing the transverse slider 3, and the first guide surface 21 forms a 45° angle with the sliding direction of the longitudinal slider 2; the transverse slider 3 is provided with a second guide surface 31 on the side facing the longitudinal slider 2, and the second guide surface 31 forms a 45° angle with the sliding direction of the transverse slider 3; the first guide surface 21 and the second guide surface 31 are slidably abutted to ensure that when the longitudinal slider 2 moves up and down, it can keep in contact with the second guide surface 31 of the transverse slider 3, and the longitudinal force can be converted into an equal transverse force. A suspension device 29 is provided on the longitudinal slider 2 to suspend a weight block 9 with an adjustable weight, which is used to adjust the load size according to the experimental needs and simulate different load conditions that may be encountered when the thrust actuator is working. A loading platform 13 is provided on the bracket 1 and located in the extension direction of the transverse slide groove 12 for fixing the thrust actuator to be tested.
[0027] During the test, the test device is placed firmly on a flat and stable surface; the thrust actuator is fixed on the loading platform 13, with the front end of the push rod facing the transverse slider 3; the thrust actuator is started to generate thrust, and as the thrust is applied, the transverse slider 3 is pushed to move along the transverse slot 12, thereby squeezing the longitudinal slider 2. The contact between the 45° first guide surface 21 and the 45° second guide surface 31 will convert the transverse force into an equal longitudinal force, so that the longitudinal slider 2 moves upward along the longitudinal slot 11. The durability of the actuator is evaluated by allowing the longitudinal slider 2 to maintain a certain height, or by pushing the longitudinal slider 2 to rise to a specified position multiple times.
[0028] In some preferred embodiments, a lubricating medium is coated on the contacting portion of the first guide surface 21 and the second guide surface 31. The lubricating medium can significantly reduce the friction coefficient between the two contacting surfaces, help reduce the energy loss when the slider moves, and enable the slider to slide more smoothly, thereby improving the efficiency and accuracy of the entire testing process.
[0029] In some preferred embodiments, the longitudinal slide groove 11 is connected to the longitudinal slider 2 by a rolling slide rail, and the transverse slide groove 12 is connected to the transverse slider 3 by a rolling slide rail, so as to reduce friction and improve the accuracy of the test.
[0030] like Figure 1 and Figure 2 As shown, in some preferred embodiments, the suspension device 29 is a suspension rope fixed to the bottom of the longitudinal slider 2; the bottom of the bracket 1 has a through hole for the suspension device 29 to pass through, so that the user can easily hang, adjust and replace weight blocks 9 of different weights to meet different testing requirements. In addition, this structure is also convenient for maintenance and inspection, and the suspension rope is easy to disassemble and install, making the assembly and disassembly process of the entire system simpler.
[0031] In some preferred embodiments, a limiting device is provided at the top of the longitudinal slide groove 11 to limit the extreme position of the upward sliding of the longitudinal slider 2 to prevent the longitudinal slider 2 from accidentally rushing out of the longitudinal slide groove 11.
[0032] like Figure 2 and Figure 3 As shown, in some preferred embodiments, a limit slider 4 that can slide laterally is provided on the top of the longitudinal slide 11, and the surface of the limit slider 4 has an inclined contact surface 41, and the contact surface 41 blocks the upward movement path of the longitudinal slider 2; the angle between the contact surface 41 and the sliding direction of the limit slider 4 is 45°; the top of the longitudinal slide 11 is also equipped with an elastic element 5 that prevents the limit slider 4 from retreating. The elastic element 5 uses a compression spring, for example. For a thrust actuator with overload protection, when subjected to an external force beyond a preset range, the internal protection mechanism will slip to avoid structural damage. When the slip force test is performed, the thrust actuator is started to push the transverse slider 3 to move along the transverse slide 12, thereby squeezing the longitudinal slider 2 to move upward along the longitudinal slide 11. As the longitudinal slider 2 moves upward, the squeezing contact surface 41 causes the limit slider 4 to retreat and squeeze the elastic element 5. The greater the degree of pressure on the elastic element 5, the greater the resistance applied, and the slip force of the thrust actuator can be calibrated by the retreat amount of the limit slider 4.
[0033] like Figure 2 and Figure 3 As shown, in some preferred embodiments, a pair of limit sliders 4 are symmetrically provided on the top of the longitudinal slide groove 11, and each limit slider 4 is equipped with an elastic element 5 that prevents it from retreating.
[0034] like Figure 4As shown, in some preferred embodiments, the tail end of the limit slider 4 is columnar and partially exposes the outer side wall of the longitudinal slide groove 11; the tail end of the limit slider 4 has a scale. The indicated value of the scale at the tail end of the limit slider 4 corresponds to the thrust value applied to the limit slider 4 by the elastic element 5 after being compressed. This structure enables the operator to intuitively observe the movement of the limit slider 4 during the test, which is convenient for real-time monitoring; through the indicated value on the scale, the thrust applied to the limit slider 4 by the elastic element 5 after being compressed can be directly read, thereby accurately evaluating the slipping force characteristics of the thrust actuator and simplifying the measurement process.
[0035] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the present invention so that people familiar with the technology in this field can understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A portable variable load thrust test device, characterized in that: The invention comprises a bracket (1); the bracket (1) has a longitudinal slide groove (11) and a transverse slide groove (12); the longitudinal slide groove (11) is slidably equipped with a longitudinal slider (2), and the transverse slide groove (12) is slidably equipped with a transverse slider (3); the longitudinal slider (2) is provided with a first guide surface (21) on a side facing the transverse slider (3), and the first guide surface (21) forms an angle of 45° with the sliding direction of the longitudinal slider (2); the transverse slider (3) is provided with a second guide surface (31) on a side facing the longitudinal slider (2), and the second guide surface (31) forms an angle of 45° with the sliding direction of the transverse slider (3); the first guide surface (21) and the second guide surface (31) are slidably abutted; a suspension device (29) is provided on the longitudinal slider (2) to suspend a weight block (9) with an adjustable weight; and a loading platform (13) is provided on the bracket (1) and located in the extension direction of the transverse slide groove (12) to fix a thrust actuator to be detected.
2. The portable variable load thrust test device according to claim 1, characterized in that: The contact portion between the first guide surface (21) and the second guide surface (31) is coated with a lubricating medium.
3. The portable variable load thrust test device according to claim 1, characterized in that: The longitudinal slide groove (11) and the longitudinal slider (2) are connected by a rolling slide rail, and the transverse slide groove (12) and the transverse slider (3) are connected by a rolling slide rail.
4. The portable variable load thrust test device according to any one of claims 1 to 3, characterized in that: The suspension device (29) is a suspension cable fixed to the bottom of the longitudinal slider (2); the bottom of the bracket (1) has a through hole for the suspension device (29) to pass through.
5. The portable variable load thrust test device according to claim 4, characterized in that: A limit slider (4) capable of sliding laterally is disposed at the top of the longitudinal slide groove (11); the surface of the limit slider (4) has an inclined abutment surface (41), and the abutment surface (41) blocks the upward movement path of the longitudinal slider (2); the included angle between the abutment surface (41) and the sliding direction of the limit slider (4) is 45°; an elastic element (5) for preventing the limit slider (4) from retreating is also disposed at the top of the longitudinal slide groove (11); a pair of limit sliders (4) are symmetrically disposed at the top of the longitudinal slide groove (11), and each limit slider (4) is equipped with an elastic element (5) for preventing it from retreating.
6. The portable variable load thrust test device according to claim 5, characterized in that: The tail end of the limiting slider (4) is columnar and partially exposes the outer side wall of the longitudinal slide groove (11); the tail end of the limiting slider (4) has a scale.
7. The portable variable load thrust test device according to claim 6, characterized in that: The indicated value of the scale at the rear end of the limit slider (4) corresponds to the thrust value applied to the limit slider (4) by the elastic element (5) after being compressed.
8. A method for performing thrust testing using the portable variable load thrust testing device according to claim 6 or 7, characterized in that: The following steps are involved: Step 1: Place the test device on a flat and stable surface; Step 2: Fix the thrust actuator to be tested on the loading platform (13), ensuring that the front end of the push rod of the thrust actuator faces the transverse slider (3); Step 3: Hanging a weight block (9) on the longitudinal slider (2) to simulate the expected load condition; Step 4: starting the thrust actuator to generate thrust and push the transverse slider (3) to move along the transverse slide groove (12), thereby causing the longitudinal slider (2) to move upward along the longitudinal slide groove (11); Step 5: Evaluate the performance of the thrust actuator by monitoring the displacement of the longitudinal slider (2) or the retreat of the limit slider (4).
9. The thrust test method according to claim 8, characterized in that: The method also includes adjusting the weight of the weight block (9) to change the load applied to the thrust actuator, thereby testing the performance of the thrust actuator under different load conditions.
10. The thrust test method according to claim 9, characterized in that: The method also includes directly measuring the thrust value applied to the limit slider (4) by the elastic element (5) after being compressed by observing the reading on the scale at the rear end of the limit slider (4), and evaluating the slipping force of the thrust actuator in combination with the weight of the weight block (9) and the longitudinal slider (2).