Rotary actuator load testing device

Abstract

The utility model relates to the field of actuator detection device, concretely relates to a kind of rotary actuator load testing device, comprising: rotary actuator;Input gear, the tooth part of the input gear is pre-set with vacancy in the circumference, and the output shaft of rotary actuator is connected with input gear transmission;With the meshing transmission of input gear, when input gear rotates to vacancy directly opposite transmission gear, the meshing transmission of input gear and transmission gear fails;Rotary setting wire reel, wire reel is connected with transmission gear transmission, and rope is wound on wire reel in the wire reel rotation process;Rope, one end of rope is connected on wire reel;Counterweight, counterweight is connected on the end of rope away from wire reel and tightens rope. It can realize the automatic reset of wire reel before switching steering of actuator, to ensure that rotary actuator can be subjected to stable load in positive and negative rotation.

Description

Technical Field

[0001] This utility model relates to the field of actuator testing devices, specifically to a load testing device for a rotary actuator. Background Technology

[0002] With the rapid development of industrial products and intelligence, rotary actuators, as core components for realizing intelligent product control, have very important performance and lifespan. The problem with the existing technology for load verification in the actuator development process is that during the switching between forward and reverse rotation of the actuator, the rotating component that is connected to the actuator drive and the suspended counterweight cannot automatically reset. As a result, after the forward rotation is completed, during the reverse rotation, the rotating component will reset with the weight of the suspended counterweight, leading to unstable load. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a rotary actuator load testing device that can realize automatic reset of the rotating parts to ensure the stability of the load during the forward and reverse rotation of the test actuator.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A load testing device for a rotary actuator, comprising:

[0006] Rotate the actuator;

[0007] An input gear, wherein the teeth of the input gear have a pre-set notch in the circumferential direction, and the output shaft of the rotating actuator is connected to the input gear for transmission.

[0008] When the input gear rotates to the position where it is not in contact with the transmission gear, the meshing transmission between the input gear and the transmission gear fails.

[0009] The spool is rotated and connected to the transmission gear. During the rotation of the spool, the rope is wound around the spool.

[0010] The rope, with one end connected to the spool;

[0011] The counterweight is attached to the end of the rope away from the spool and tensions the rope.

[0012] Furthermore, in a load testing device for a rotary actuator in this application, the reel is provided with a groove concentric with the rotation center of the reel, and the rope is wound around the groove during the rotation of the reel. As a preferred embodiment of this application, this ensures that the lever arm of the counterweight acting on the reel is stable during the rotation of the reel.

[0013] Furthermore, the rotary actuator load testing device of this application also includes a frame, and a counterweight is slidably connected to the frame in the vertical direction.

[0014] Furthermore, the rotary actuator load testing device of this application also includes a guide wheel rotatably mounted on the frame, and a rope extending from the reel passes around the guide wheel and is connected to the counterweight. The rope segment between the guide wheel and the counterweight extends vertically.

[0015] Furthermore, in the rotary actuator load testing device of this application, a connecting post is provided on the spool, the rope is connected to the connecting post, the trajectory of the trough is an open C-shape, and the connecting post is set on the outer extension trajectory of the corresponding arc of the trough.

[0016] Furthermore, in a rotary actuator load testing device of this application, the frame is provided with a pair of limiting rods, and the rope segment between the guide wheel and the reel is between the pair of limiting rods;

[0017] When the spool is in the reset position, the counterweight descends to the lowest position, and there is a gap between the rope and the limit rod.

[0018] When the reel rotates by a preset angle relative to the reset position, the rope adheres to the limit rod on the side corresponding to the rotation direction of the reel.

[0019] When the meshing transmission between the input gear and the transmission gear fails, during the process of the coil rotating to the reset position, the limit rod is used to suppress the reciprocating rotation of the coil relative to the reset position due to inertia.

[0020] Furthermore, in this application, a load testing device for a rotary actuator is provided, wherein a first rotating shaft and a second rotating shaft are rotatably mounted on the frame, an input gear is mounted on the first rotating shaft, and the first rotating shaft is coaxially connected to the rotary actuator; a coil and a transmission gear are mounted on the second rotating shaft.

[0021] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0022] This invention provides a load testing device for a rotary actuator. The method of use is as follows: the output shaft of the rotary actuator rotates, sequentially driving the input gear, transmission gear, and coil to rotate. During the rotation of the coil, the rope pulls the counterweight upwards, and the weight of the counterweight provides a load for the rotary actuator to test its performance and lifespan. When the input gear rotates to the position directly opposite the transmission gear, the meshing transmission between the input and transmission gears fails, and the counterweight falls, causing the coil to quickly reset. After the coil resets, the input gear switches its rotation direction, and this cycle is repeated to perform load tests in both forward and reverse directions. Therefore, the actuator can automatically reset the coil before switching directions, ensuring a stable load on the rotary actuator in both forward and reverse rotations. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a rotary actuator load testing device according to an embodiment of this application;

[0024] Figure 2 This is a plan view of a rotary actuator load testing device according to an embodiment of this application;

[0025] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0026] Figure 4 for Figure 2 Cross-sectional view along the BB direction.

[0027] In the diagram: 1-Input gear; 10-Missing part; 2-Transmission gear; 3-Spool; 31-Slot; 32-Connecting column; 4-Rotating actuator; 5-Rope; 6-Counterweight; 7-Frame; 71-Guide rod; 72-Limit rod; 73-First rotating shaft; 74-Second rotating shaft; 8-Guide wheel. Detailed Implementation

[0028] Existing technologies regarding load verification devices and their problems in the actuator development process include:

[0029] 1. A test device using a magnetic powder brake. Magnetic powder brakes suffer severe torque attenuation at 120℃, making it impossible to meet the constant torque load output.

[0030] 2. The swing arm load type test device is used because the lever arm of the actuator changes continuously within the operating angle range. When the actuator switches between clockwise and counterclockwise rotation, the torque applied to the actuator cannot meet the constant torque requirement.

[0031] This embodiment provides a load testing device for a rotary actuator, including:

[0032] Rotate actuator 4;

[0033] Input gear 1, the teeth of which have a pre-set notch 10 in the circumferential direction, and the output shaft of the rotary actuator 4 is connected to the input gear 1 in a transmission connection;

[0034] When the input gear 1 rotates to the position 10 directly opposite the transmission gear 2, the meshing transmission between the input gear 1 and the transmission gear 2 fails.

[0035] The rotating reel 3 is connected to the transmission gear 2, and the rope 5 is wound around the reel 3 during the rotation of the reel 3.

[0036] Rope 5, one end of which is connected to the reel 3;

[0037] The counterweight 6 is connected to the end of the rope 5 away from the spool 3 and tensions the rope 5.

[0038] Based on the above structure, the method of using a rotary actuator load testing device is as follows: The output shaft of the rotary actuator 4 rotates, sequentially driving the input gear 1, the transmission gear 2, and the coil 3 to rotate. During the rotation of the coil 3, the rope 5 pulls the counterweight 6 upward, and the weight of the counterweight 6 provides a load for the rotary actuator 4 to test its performance and lifespan. When the input gear 1 rotates to the position 10 directly opposite the transmission gear 2, the meshing transmission between the input gear 1 and the transmission gear 2 fails, and the counterweight 6 falls, causing the coil 3 to quickly reset. After the coil 3 resets, the input gear 1 switches its rotation direction, and this cycle is repeated to perform load tests in both forward and reverse directions. Therefore, the actuator can automatically reset the coil 3 before switching directions, ensuring that the rotary actuator 4 receives a stable load in both forward and reverse rotations.

[0039] Furthermore, in this embodiment, the spool 3 is provided with a groove 31 concentric with the rotation center of the spool 3, and the rope 5 is wound around the groove 31 during the rotation of the spool 3.

[0040] This ensures that the lever arm of the counterweight 6 acting on the coil 3 remains stable during the rotation of the coil 3.

[0041] Furthermore, in this embodiment, a frame 7 is also included, and a counterweight 6 is slidably connected to the frame 7 in a vertical direction. Specifically, a pair of guide rods 71 ​​are provided on the frame 7, and the counterweight 6 is slidably sleeved on the guide rods 71.

[0042] Furthermore, in this embodiment, a guide wheel 8 is rotatably mounted on the frame 7, and a rope 5 extending from the coil 3 passes around the guide wheel 8 and is connected to the counterweight 6. The rope 5 extends vertically between the guide wheel 8 and the counterweight 6.

[0043] Furthermore, in this embodiment, a connecting post 32 is rotatably mounted on the reel 3, and the rope 5 is connected to the connecting post 32. The trajectory of the groove 31 is an open C-shape, and the connecting post 32 is positioned on the outer extension of the corresponding arc of the groove 31. The rotatably mounted connecting post 32 can effectively solve the problem of rope wear caused by repeated bending of the rope due to reciprocating rotation when lifting heavy objects.

[0044] Furthermore, in this embodiment, the frame 7 is provided with a pair of limiting rods 72, and the rope segment of the rope body 5 between the guide wheel 8 and the reel 3 is between the pair of limiting rods 72;

[0045] When the coil 3 is in the reset position, the counterweight 6 descends to the lowest position, and there is a gap between the rope 5 and the limit rod 72.

[0046] When the coil 3 rotates by a preset angle relative to the reset position, the rope 5 adheres to the limiting rod 72 on the side corresponding to the rotation direction of the coil 3.

[0047] When the meshing transmission between input gear 1 and transmission gear 2 fails, during the rotation of the coil 3 to the reset position, the limit rod 72 is used to suppress the reciprocating rotation of the coil 3 relative to the reset position due to inertia.

[0048] Furthermore, in this embodiment, a first rotating shaft 73 and a second rotating shaft 74 are rotatably mounted on the frame 7, the input gear 1 is mounted on the first rotating shaft 73, and the first rotating shaft 73 is coaxially connected to the rotating actuator 4; the coil 3 and the transmission gear 2 are mounted on the second rotating shaft 74.

[0049] In summary, the rotary actuator load testing device of this embodiment, compared with the existing magnetic powder brake type testing device and swing arm load type testing device, can apply a constant torque load to the tested component in both forward and reverse rotation, while also meeting the testing requirements in high and low temperature environments.

[0050] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A load testing device for a rotary actuator, characterized in that: include: Rotate the actuator (4); Input gear (1), the teeth of the input gear (1) have a pre-set notch (10) in the circumferential direction, and the output shaft of the rotary actuator (4) is connected to the input gear (1) in a transmission connection; When the input gear (1) rotates to the position (10) directly opposite the transmission gear (2), the meshing transmission between the input gear (1) and the transmission gear (2) fails. The rotating spool (3) is connected to the transmission gear (2) for transmission. During the rotation of the spool (3), the rope (5) is wound around the spool (3). Rope (5), one end of rope (5) is connected to the spool (3); The counterweight (6) is connected to the end of the rope (5) away from the spool (3) and tensions the rope (5).

2. The load testing device for a rotary actuator according to claim 1, characterized in that: The spool (3) is provided with a groove (31) concentric with the rotation center of the spool (3), and the rope (5) is wound in the groove (31) during the rotation of the spool (3).

3. The load testing device for a rotary actuator according to claim 2, characterized in that: It also includes a frame (7), and a counterweight (6) is slidably connected to the frame (7) in the vertical direction.

4. The load testing device for a rotary actuator according to claim 3, characterized in that: It also includes a guide wheel (8) that is rotatably mounted on the frame (7), and a rope (5) extending from the spool (3) that passes around the guide wheel (8) and is connected to the counterweight (6). The rope (5) extends vertically between the guide wheel (8) and the counterweight (6).

5. The load testing device for a rotary actuator according to claim 4, characterized in that: A connecting post (32) is provided on the spool (3) for rotation. The rope (5) is connected to the connecting post (32). The trajectory of the trough (31) is an open C-shape. The connecting post (32) is set on the outer extension trajectory of the corresponding arc of the trough (31).

6. The load testing device for a rotary actuator according to claim 5, characterized in that: The frame (7) is provided with a pair of limiting rods (72), and the rope segment of the rope body (5) between the guide wheel (8) and the spool (3) is between the pair of limiting rods (72); When the coil (3) is in the reset position, the counterweight (6) descends to the lowest position, and there is a gap between the rope (5) and the limit rod (72); When the coil (3) rotates at a preset angle relative to the reset position, the rope (5) adheres to the limiting rod (72) on the side of the corresponding coil (3) rotation direction; When the meshing transmission between the input gear (1) and the transmission gear (2) fails, during the process of the coil (3) rotating to the reset position, the limit rod (72) is used to suppress the reciprocating rotation of the coil (3) relative to the reset position due to inertia.

7. The load testing device for a rotary actuator according to claim 3, characterized in that: The frame (7) is rotatably mounted with a first rotating shaft (73) and a second rotating shaft (74). The input gear (1) is mounted on the first rotating shaft (73), and the first rotating shaft (73) is coaxially connected to the rotating actuator (4). The coil (3) and the transmission gear (2) are mounted on the second rotating shaft (74).

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