A loading device for multi-dimensional force detection

Abstract

This application relates to the technical field of multidimensional force detection loading, and in particular to a loading device for multidimensional force detection, comprising a frame, on which a sensor loading head is disposed for mounting a sensor. The frame is provided with multiple sets of force loading mechanisms and multiple sets of torque loading mechanisms. The multiple sets of force loading mechanisms apply force to the sensor loading head from different directions, and the multiple sets of torque loading mechanisms apply torque to the sensor loading head from different directions. The sensor loading head is used to transmit the forces and torques applied by the multiple sets of force loading mechanisms to the sensor. This application has the following advantages: the force and torque loading in different directions can comprehensively simulate the force conditions of the sensor in actual use, meeting the calibration requirements of high-precision multi-component sensors when subjected to simultaneous loading of forces in multiple directions.

Description

Technical Field

[0001] This application relates to the technical field of multidimensional force detection loading, and in particular to a loading device for multidimensional force detection. Background Technology

[0002] Multi-component calibration devices are widely used in the field of sensor calibration. With the development of industrial automation and precision measurement technology, the accuracy requirements of multi-component sensors are increasing. In order to meet the needs of aerospace, automotive manufacturing and other fields for accurate measurement of multi-dimensional parameters such as force and torque, the calibration technology of multi-component sensors has become an important support for the development of the industry. Accurate and reliable calibration methods can not only improve the measurement accuracy of sensors, but also ensure the safety and reliability of related equipment, providing important guarantees for industrial production.

[0003] In existing technologies, the calibration of multi-component sensors is usually achieved by manually applying weights to apply unidirectional force or by using hydraulic devices to apply forces in multiple directions simultaneously. The manual application of weights is relatively simple to operate and low in cost, but it can only achieve force application in one direction, which is difficult to meet the multi-directional force calibration requirements of multi-component sensors. Although hydraulic devices can achieve multi-directional force application, their structure is more complex, requiring a professional hydraulic system, and there are problems such as leakage, which may affect the accuracy and stability of calibration. Utility Model Content

[0004] To meet the calibration requirements of high-precision multi-component sensors when subjected to simultaneous multi-directional forces, this application provides a loading device for multi-dimensional force detection.

[0005] This application provides a loading device for multidimensional force detection, employing the following technical solution: It includes a frame, on which a sensor loading head is mounted for mounting a sensor. The frame is equipped with multiple sets of force loading mechanisms and multiple sets of torque loading mechanisms. The multiple sets of force loading mechanisms apply force to the sensor loading head from different directions, and the multiple sets of torque loading mechanisms apply torque to the sensor loading head from different directions. The sensor loading head is used to transmit the force applied by the multiple sets of force loading mechanisms and the torque applied by the multiple sets of torque loading mechanisms to the sensor.

[0006] By adopting the above technical solution, the loading of forces and torques in different directions can comprehensively simulate the force conditions of the sensor in actual use, so that the sensor can more realistically reflect its performance in the actual working environment during the calibration process, improve the fit between the calibration results and the actual application, and thus provide a guarantee for the accurate use of the sensor under various complex working conditions, thereby achieving precise calibration and meeting the calibration requirements of high-precision multi-component sensors when forces are loaded in multiple directions at the same time.

[0007] Preferably, both the force loading mechanism and the torque loading mechanism apply force and torque to the sensor loading head via a series of weights.

[0008] By adopting the above technical solution and using a weight string as a force loading mechanism and torque loading mechanism, the applied force can be precisely controlled by utilizing the standard weight of the weights, and the structure is simple and the cost is low.

[0009] Preferably, the weight string is provided in multiple groups, and the weight string applying force to the sensor loading head is respectively an X-force weight group, a Y-force weight group, and a Z-force weight group. The X-force weight group applies force to the sensor loading head horizontally along the X-axis coordinate system through a force reversal component, the Y-force weight group applies force to the sensor loading head horizontally along the Y-axis coordinate system through the force reversal component, and the Z-force weight group applies force to the sensor loading head vertically along the Z-axis coordinate system.

[0010] By adopting the above technical solution, the device achieves the loading of forces in the X, Y, and Z directions by using weight loading: the weight of the weights is directly loaded onto the sensor loading head through the Z force weight group, and the sensor loading head generates a vertically downward force on the multi-component sensor being calibrated; the X force weight group and the Y force weight group load the weight of the weights onto the sensor loading head through the force reversing component, and the sensor loading head generates a horizontal force on the multi-component sensor being calibrated.

[0011] Preferably, the weight sets that apply torque to the sensor loading head are Mx torque weight set, My torque weight set, and Mz torque weight set, respectively. The Mx torque weight set and the My torque weight set apply torque to the sensor loading head in the vertical direction through the force reversing component, and the Mz torque weight set applies torque to the sensor loading head in the horizontal direction through the force reversing component.

[0012] By adopting the above technical solution, the weight is applied to the sensor loading head through the force reversal component, enabling the device to have the ability to calibrate torque in the X, Y, and Z directions in both clockwise and counterclockwise directions.

[0013] Preferably, the weight string includes multiple weight bodies of different weights and weight connectors. The multiple weight bodies are suspended and connected in a vertical direction through the weight connectors. A weight lifting component is provided at the bottom of the weight string, which is used to support the weight bodies of the weight string one by one.

[0014] By adopting the above technical solution, when it is necessary to increase the applied force or torque, the number of weight bodies carried by the weight lifting component is reduced, allowing more weight bodies to participate in the loading; when it is necessary to reduce the applied force or torque, the number of weight bodies carried by the weight lifting component is increased, allowing some weight bodies to detach from the load.

[0015] Preferably, the weight connector includes a weight connector head and a weight connector plate. A sliding channel is coaxially formed in the body of the weight for the weight connector head to slide. A hanging groove is formed at the bottom of the body of the weight for the weight connector head to be suspended. The hanging groove and the sliding channel are connected. One end of the weight connector plate is detachably connected to the body of the weight, and the other end of the weight connector plate is detachably connected to the weight connector head on the adjacent body of the weight.

[0016] By adopting the above technical solution and using a detachable connection method, the assembly and adjustment of the weight string are facilitated, and the magnitude of the applied force and torque can be quickly adjusted according to different calibration tasks, thereby improving the versatility and flexibility of the equipment.

[0017] Preferably, the weight lifting component includes a lifting plate and a lifting mechanism. The lifting plate is used to abut against the weight body at the bottom of the weight string, and the lifting mechanism is used to drive the lifting plate to reciprocate in a vertically positionable manner.

[0018] By adopting the above technical solution, the setting of the weight lifting component allows for convenient adjustment of the applied force and torque, realizing the function of multi-point calibration and improving the accuracy and efficiency of calibration. When it is necessary to increase the applied force or torque, the lifting mechanism descends, allowing more weight bodies to participate in the loading; when it is necessary to reduce the applied force or torque, the lifting mechanism rises, allowing some weight bodies to detach from the load.

[0019] Preferably, the force reversing assembly includes a rotating pulley, a weight rope, a pulley base, and two pulley bearings. The two pulley bearings are coaxially and symmetrically arranged at both ends of the rotating pulley, and the pulley bearings and the rotating pulley are rotatably connected. The rotating pulley is rotatably mounted on the pulley base via the two pulley bearings. The pulley base is mounted on the frame. The weight rope passes around the rotating pulley circumferentially. One end of the weight rope is connected to the sensor loading head, and the other end is connected to the top of the weight string.

[0020] By adopting the above technical solution, when the gravity of the weight string acts on the weight rope, the direction of the force is changed by rotating the pulley, thereby realizing the reversal of the force. The use of the force reversal component ensures that the gravity of the weight string can be accurately converted into force and torque in the required direction, reducing energy loss and error, and improving the accuracy and reliability of calibration.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. Applying force and torque in different directions can comprehensively simulate the force conditions of the sensor in actual use, enabling the sensor to more realistically reflect its performance in the actual working environment during the calibration process. This improves the fit between the calibration results and the actual application, thereby ensuring the accurate use of the sensor under various complex working conditions. This achieves precise calibration and meets the calibration requirements of high-precision multi-component sensors when subjected to simultaneous force in multiple directions. 2. Using a weight string as a force loading mechanism and a torque loading mechanism, the magnitude of the applied force can be precisely controlled by utilizing the standard weight of the weights. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the overall structure from another perspective of this application; Figure 3 This is a cross-sectional schematic diagram of the overall structure of this application; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 yes Figure 1 A magnified view of part B in the diagram.

[0023] Explanation of reference numerals in the attached drawings: 1. Sensor; 110. Frame; 111. Sensor loading head; 112. Mounting hole; 121. X-force weight group; 122. Y-force weight group; 123. Z-force weight group; 131. Mx torque weight group; 132. My torque weight group; 133. Mz torque weight group; 140. Weight string; 141. Weight body; 142. Weight connector; 1421. Weight connector head; 1422. Weight connecting plate; 143. Sliding channel; 144. Suspension groove; 145. First connecting bolt; 146. Second connecting bolt; 150. Weight lifting component; 151. Lifting plate; 152. Lifting mechanism; 160. Force reversing assembly; 161. Rotating pulley; 162. Weight rope; 163. Pulley base; 164. Pulley bearing. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] This application discloses a loading device for multidimensional force detection, which is used to meet the calibration requirements of high-precision multi-component sensors when multiple forces are applied simultaneously in multiple directions.

[0026] refer to Figure 1 and Figure 2A loading device for multidimensional force detection includes a frame 110, on which a sensor loading head 111, multiple sets of force loading mechanisms, and multiple sets of torque loading mechanisms are mounted. The sensor loading head 111 is used to mount a sensor 1. The multiple sets of force loading mechanisms apply forces to the sensor loading head 111 from different directions, and the multiple sets of torque loading mechanisms apply torques to the sensor loading head 111 from different directions. The sensor loading head 111 is used to transmit the forces and torques applied by the multiple sets of force loading mechanisms to the sensor 1. The force and torque loading in different directions can comprehensively simulate the force conditions of the sensor 1 in actual use, enabling the sensor 1 to more realistically reflect its performance in the actual working environment during the calibration process. This improves the fit between the calibration results and actual applications, thereby ensuring the accurate use of the sensor 1 under various complex working conditions. This achieves precise calibration and meets the calibration requirements of the high-precision multi-component sensor 1 when multiple forces are applied simultaneously.

[0027] For details, please refer to Figure 2 , Figure 3 and Figure 4 The sensor loading head 111 is an important component with high strength and light weight. It is designed in the shape of a disc with multiple mounting holes 112 on its surface for mounting the sensor 1. Both the force loading mechanism and the torque loading mechanism apply force and torque to the sensor loading head 111 through the weight string 140. Using the weight string 140 as the force loading mechanism and torque loading mechanism can accurately control the magnitude of the applied force by utilizing the standard weight of the weights. It also has a simple structure and low cost.

[0028] refer to Figure 2 , Figure 4 and Figure 5The weight string 140 has multiple sets, which apply force to the sensor loading head 111 as X-force weight set 121, Y-force weight set 122, and Z-force weight set 123. The X-force weight set 121 applies a horizontal force to the sensor loading head 111 along the X-axis coordinate system via the force reversing component 160; the Y-force weight set 122 applies a horizontal force to the sensor loading head 111 along the Y-axis coordinate system via the force reversing component 160; and the Z-force weight set 123 applies a vertical force to the sensor loading head 111 along the Z-axis coordinate system. The weight string 140 also applies torque to the sensor loading head. The head 111 consists of Mx torque weight group 131, My torque weight group 132, and Mz torque weight group 133. Mx torque weight group 131 and My torque weight group 132 apply torque to the sensor loading head 111 in the vertical direction through the force reversing component 160. Mz torque weight group 133 applies torque to the sensor loading head 111 in the horizontal direction through the force reversing component 160. The force reversing component 160 loads the weights onto the sensor loading head 111, enabling the device to perform clockwise and counterclockwise torque calibration in the X, Y, and Z directions.

[0029] The combined logic of these force loading mechanisms and torque loading mechanisms applies force and torque to the sensor loading head 111 from different directions, enabling the sensor 1 to be calibrated under multi-dimensional stress environments. The forces and torques in different directions work together to simulate various complex stress conditions of the sensor 1 in actual use, thereby improving the accuracy and reliability of calibration. This multi-dimensional loading method allows the sensor 1 to fully expose its potential performance problems during the calibration process, ensuring that the calibrated sensor 1 can work accurately and stably in actual applications.

[0030] In this embodiment, the X force weight group 121 has two groups, namely force weight group X1 and force weight group X2; the Y force weight group 122 has two groups, namely force weight group Y1 and force weight group Y2; the Mx torque weight group 131 has four groups, namely torque weight string Mx1, torque weight string Mx2, torque weight string Mx3 and torque weight string Mx4; the My torque weight group 132 has four groups, namely torque weight string My1, torque weight string My2, torque weight string My3 and torque weight string My4; and the Mz torque weight group 133 has four groups, namely torque weight string Mz1, torque weight string Mz2, torque weight string Mz3 and torque weight string Mz4. For details, please refer to Figure 4The weight string 140 includes multiple weight bodies 141 of different weights and weight connectors 142. The weight bodies 141 have different weight specifications to meet different loading requirements. Multiple weight bodies 141 are suspended and connected vertically by the weight connectors 142. The weight connectors 142 include weight connectors 1421 and weight connectors 1422. A sliding channel 143 is coaxially formed inside the weight body 141 for the weight connectors 1421 to slide. A suspension groove 144 is formed at the bottom of the weight body 141 for the weight connectors 1421 to be suspended. The suspension groove 144 and the sliding channel 143 are connected. One end of the weight connector 1422 is connected to the weight. The main body 141 is detachably connected, and the other end of the weight connecting plate 1422 is detachably connected to the weight connecting head 1421 on the adjacent weight body 141. In this embodiment, six first connecting bolts 145 are inserted at equal angles along the circumference of the weight connecting plate 1422. The first connecting bolts 145 pass through the weight connecting plate 1422 and are inserted into the weight body 141. Second connecting bolts 146 are inserted on the weight connecting head 1421. The detachable connection method facilitates the assembly and adjustment of the weight string 140, and can quickly adjust the magnitude of the loaded force and torque according to different calibration tasks, thereby improving the versatility and flexibility of the equipment.

[0031] refer to Figure 3 and Figure 4 The bottom of the weight string 140 is provided with a weight lifting component 150. The weight lifting component 150 is used to support the weight body 141 of the weight string 140 one by one. The setting of the weight lifting component 150 makes it easy to adjust the applied force and torque, realize the function of multi-point calibration, and improve the accuracy and efficiency of calibration.

[0032] The weight lifting component 150 includes a lifting plate 151 and a lifting mechanism 152. The lifting plate 151 is used to abut against the weight body 141 at the bottom of the weight string 140. In this embodiment, the lifting mechanism 152 is a worm gear lifting mechanism 152, which can drive the lifting plate 151 to reciprocate in a vertically positionable manner. When it is necessary to increase the applied force or torque, the lifting mechanism 152 descends, allowing more weight bodies 141 to participate in the loading; when it is necessary to reduce the applied force or torque, the lifting mechanism 152 rises, allowing some weight bodies 141 to disengage from the load.

[0033] refer to Figure 2 , Figure 4 and Figure 5The force reversing assembly 160 includes a rotating pulley 161, a weight rope 162, a pulley base 163, and two pulley bearings 164. The weight rope 162 wraps around the rotating pulley 161 circumferentially, with one end connected to the sensor loading head 111 and the other end connected to the top of the weight string 140. The rotating pulley 161 has a smooth surface to reduce friction with the weight rope 162. The two pulley bearings 164 are coaxially and symmetrically arranged at both ends of the rotating pulley 161, and the pulley bearings 164 and the rotating pulley 161 are connected to each other. The pulley 161 is rotatably connected to the frame 110. The rotating pulley 161 is rotatably mounted on the pulley base 163 via two pulley bearings 164. When the weight string 140 acts on the weight rope 162, the direction of the force is changed by rotating the pulley 161, thereby realizing the force reversal. The use of the force reversal component 160 ensures that the weight string 140 can be accurately converted into force and torque in the required direction, reducing energy loss and error, and improving the accuracy and reliability of calibration.

[0034] The implementation principle of a loading device for multidimensional force detection according to an embodiment of this application is as follows: This loading device applies force and torque to the sensor loading head 111 from different directions through multiple sets of force loading mechanisms and torque loading mechanisms. The sensor loading head 111 transmits these forces and torques to the sensor 1, enabling the sensor 1 to more realistically reflect its performance in the actual working environment during the calibration process, improving the fit between the calibration results and actual applications, and thus ensuring the accurate use of the sensor 1 under various complex working conditions, thereby achieving precise calibration and meeting the calibration requirements of multidimensional force and torque of the sensor 1. By adjusting the number of weight strings 140 and the position of the weight lifting component 150, the magnitude of the applied force and torque can be precisely controlled. The use of the force reversing component 160 allows the gravity of the weight strings 140 to be flexibly converted into forces and torques in different directions. Compared with the prior art, this structural design can more comprehensively and accurately simulate the actual force situation of the sensor 1, improve the calibration accuracy and reliability of the sensor 1, and provide strong support for the precise application of the sensor 1 in aerospace, automobile manufacturing and other fields.

[0035] The embodiments described in this specific implementation are 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 loading device for multi-dimensional force detection comprising a frame (110), characterized in that: A sensor loading head (111) is provided on the frame (110). The sensor loading head (111) is used to install the sensor (1). The frame (110) is provided with multiple sets of force loading mechanisms and multiple sets of torque loading mechanisms. The multiple sets of force loading mechanisms apply force to the sensor loading head (111) from different directions. The multiple sets of torque loading mechanisms apply torque to the sensor loading head (111) from different directions. The sensor loading head (111) is used to transmit the force applied by the multiple sets of force loading mechanisms and the torque applied by the multiple sets of torque loading mechanisms to the sensor (1).

2. The loading device for multi-dimensional force detection according to claim 1, characterized in that: Both the force loading mechanism and the torque loading mechanism apply force and torque to the sensor loading head (111) through a weight string (140).

3. The loading device for multi-dimensional force detection according to claim 2, wherein: The weight string (140) is provided in multiple sets. The weight string (140) applies force to the sensor loading head (111) and consists of X-force weight group (121), Y-force weight group (122) and Z-force weight group (123). The X-force weight group (121) applies force horizontally to the sensor loading head (111) along the X-axis coordinate system, the Y-force weight group (122) applies force horizontally to the sensor loading head (111) along the Y-axis coordinate system, and the Z-force weight group (123) applies force vertically to the sensor loading head (111) along the Z-axis coordinate system.

4. The loading device for multi-dimensional force detection according to claim 3, wherein: The weights (140) apply torque to the sensor loading head (111) and are respectively Mx torque weight group (131), My torque weight group (132) and Mz torque weight group (133). The Mx torque weight group (131) and the My torque weight group (132) apply torque to the sensor loading head (111) in the vertical direction through the force reversing component (160), and the Mz torque weight group (133) applies torque to the sensor loading head (111) in the horizontal direction through the force reversing component (160).

5. The loading device for multi-dimensional force detection according to claim 4, characterized in that: The weight string (140) includes multiple weight bodies (141) of different weights and weight connectors (142). The multiple weight bodies (141) are suspended and connected in a vertical direction through the weight connectors (142). A weight lifting component (150) is provided at the bottom of the weight string (140). The weight lifting component (150) is used to support the weight bodies (141) of the weight string (140) one by one.

6. The loading device for multi-dimensional force detection according to claim 5, wherein: The weight connector (142) includes a weight connector (1421) and a weight connector plate (1422). A sliding channel (143) is coaxially provided inside the weight body (141) for the weight connector (1421) to slide. A hanging groove (144) is provided at the bottom of the weight body (141) for the weight connector (1421) to be suspended. The hanging groove (144) and the sliding channel (143) are connected. One end of the weight connector plate (1422) is detachably connected to the weight body (141), and the other end of the weight connector plate (1422) is detachably connected to the weight connector (1421) on the adjacent weight body (141).

7. The loading device for multi-dimensional force detection according to claim 6, characterized in that: The weight lifting component (150) includes a lifting plate (151) and a lifting mechanism (152). The lifting plate (151) is used to abut against the weight body (141) at the bottom of the weight string (140). The lifting mechanism (152) is used to drive the lifting plate (151) to reciprocate in a vertically positionable manner.

8. The loading device for multi-dimensional force detection according to claim 7, characterized in that: The force reversing assembly (160) includes a rotating pulley (161), a weight rope (162), a pulley base (163), and two pulley bearings (164). The two pulley bearings (164) are coaxially and symmetrically arranged at both ends of the rotating pulley (161), and the pulley bearings (164) and the rotating pulley (161) are rotatably connected. The rotating pulley (161) is rotatably arranged on the pulley base (163) through the two pulley bearings (164). The pulley base (163) is arranged on the frame (110). The weight rope (162) passes around the rotating pulley (161) circumferentially. One end of the weight rope (162) is connected to the sensor loading head (111), and the other end is connected to the top of the weight string (140).

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