A kind of actuator multi-purpose testing equipment and testing method

Abstract

The present invention belongs to the technical field of actuator testing equipment, and specifically relates to a multi-purpose testing equipment and testing method for an actuator. The testing equipment includes a rotatably mounted gear, a floating disk arranged on the same axis as the gear, a driving unit for driving the floating disk to move axially, at least one slidably mounted rack that can mesh with the gear, and a load unit for applying a load to the rotation of the gear. The gear has a first clamping portion, the floating disk has a second clamping portion that can be coupled with the first clamping portion, and the driving unit controls the coupling of the first clamping portion and the second clamping portion; there is also an axial connection portion for applying a rotational driving force on the axis of the floating disk; when the rack slides away from the gear, the rack disengages from the gear; the rack also has a connecting portion for applying a linear driving force. The testing equipment can adapt to different types of actuators to test their performance parameters under simulated working conditions, and the working conditions can be adjusted as needed to improve testing efficiency and save testing costs.

Description

Technical Field

[0001] The invention belongs to the technical field of actuator testing equipment, and in particular relates to a multi-purpose actuator testing equipment and a testing method. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not necessarily be regarded as an admission or suggestion that the information has become the prior art known to those skilled in the art.

[0003] With the development of economy, people's living standards have been greatly improved. Intelligence has become a mainstream trend in the home appliance industry. More and more home appliances need to be equipped with various types of drive devices that perform linear motion and rotational motion. For example, patent CN114857829A provides a refrigerator with an automatic door opening and closing function. When the refrigerator opens the door automatically, in order to overcome the negative pressure and the suction of the door seal, the push rod actuator is first used to push the refrigerator door to a certain angle, and then the rotary actuator intervenes to fully open the refrigerator door. For another example, patent CN106761149A provides a push rod actuator, which can be used in various home appliances as a linear motion drive unit. For another example, patent CN212752039U provides a rotary actuator, which can be used in various home appliances as a rotational motion drive unit.

[0004] In recent years, the use of various types of actuators in home appliances and other products has become increasingly diversified, and the output of actuators has also increased significantly. Different types of actuators need to be tested for performance indicators such as execution and reliability before leaving the factory. However, different actuators need to be matched with different testing equipment, which incurs high costs and has low testing efficiency. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a multi-purpose testing device and a testing method for an actuator.

[0006] The multi-purpose actuator testing equipment provided by the present invention comprises a rotatably mounted gear, a floating plate arranged on the same axis as the gear, a driving unit for driving the floating plate to move axially, at least one slidably mounted rack that can mesh with the gear, and a load unit for applying a load to the rotation of the gear.

[0007] The gear has a first clamping portion, and the floating plate has a second clamping portion that can be coupled with the first clamping portion. When the driving unit moves the floating plate away from the gear, the first clamping portion and the second clamping portion are separated from each other, and when the driving unit moves the floating plate close to the gear, the first clamping portion and the second clamping portion are coupled to each other. There is also an axial connection portion on the axis of the floating plate for applying a rotational driving force. When the rack slides away from the gear, the rack disengages from the gear. The rack also has a connecting portion for applying a linear driving force.

[0008] Furthermore, the floating plate floats vertically and is located on the upper side of the gear, and the driving unit is located on the lower side of the floating plate. When the floating plate needs to be away from the gear, the driving unit lifts the floating plate from the lower side. When the floating plate needs to be close to the gear, the driving unit does not push the floating plate, and the floating plate naturally falls due to gravity.

[0009] Furthermore, it also includes a fixedly installed loading platform; the loading platform is located above the floating plate, and the loading platform has a guide sleeve portion extending downward; the center of the floating plate has a limiting shaft passing through the guide sleeve portion; the shaft connection portion is located at the top of the limiting shaft.

[0010] Furthermore, a position-adjustable clamp is provided on one side of the loading platform, and the clamp is used to press and fix the actuator to be tested on the loading platform.

[0011] Furthermore, the first clamping portion is a first tooth array circumferentially arranged on the gear, and the second clamping portion is a second tooth array circumferentially arranged on the floating plate; the upper portion of each tooth in the first tooth array is wedge-shaped, and the lower portion of each tooth in the second tooth array is wedge-shaped to guide the mutual engagement.

[0012] Furthermore, a slidably mounted rack is provided on each side of the gear.

[0013] Furthermore, the connecting portion is arranged at one end of each rack away from the gear, and the connecting portion is a slot portion with a transverse opening, and a threaded hole for assembling a locking bolt is arranged on the slot portion.

[0014] Furthermore, a loading base is fixedly arranged in a direction opposite to each connecting portion for fixing the actuator to be tested.

[0015] Furthermore, the load unit includes a rotatably mounted friction disc, a first clamp and a second clamp for clamping the friction disc from both sides, a pair of parallel threaded rods for adjusting the distance between the first clamp and the second clamp, and an adjusting motor for driving the threaded rods to rotate.

[0016] Furthermore, the friction plate is coaxially connected to the gear; the two ends of the first clamp are respectively threadedly sleeved on a threaded rod, and the two ends of the second clamp are respectively rotatably connected to the end of a threaded rod; the threaded rod is connected to the output shaft of the adjusting motor, and the adjusting motor is non-rigidly fixedly installed.

[0017] Furthermore, an elastic rubber layer is bonded to the bottom of the regulating motor, and the elastic rubber layer is bonded to a fixed rigid substrate.

[0018] The above-mentioned multi-purpose actuator test equipment can simulate the load of the rotary actuator and the linear motion actuator when they are working, so as to be used for performance testing of the actuator.

[0019] When the rotary actuator needs to be tested, the housing of the rotary actuator to be tested is fixed, the output shaft of the rotary actuator to be tested is slidably engaged and connected to the shaft connection portion, the first engaging portion is coupled with the second engaging portion through the driving unit, the rack is slid to a position where it is disengaged from the gear, and the rotary actuator to be tested works to overcome the load of the load unit to simulate actual working conditions.

[0020] When the linear motion actuator needs to be tested, the housing of the linear motion actuator to be tested is fixed, the linear motion part of the linear motion actuator to be tested is connected to the connecting part, the first clamping part and the second clamping part are separated by the driving unit, and the linear motion actuator to be tested works, driving the rack to slide and then driving the gear to rotate, overcoming the load of the load unit to simulate the actual working conditions.

[0021] Beneficial effects: Compared with the prior art, the multi-purpose actuator testing equipment provided by the present invention can adapt to different types of actuators, including rotary actuators and linear motion actuators, to test their performance parameters under simulated working conditions. The working conditions can be adjusted as needed. It is easy to use, improves testing efficiency, and saves testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the actuator multi-purpose test equipment.

[0023] Figure 2 Schematic diagram of the cross section of the actuator multi-purpose test equipment.

[0024] Figure 3 Schematic diagram of the coordination between the gear and the floating plate.

[0025] Figure 4 A schematic diagram of the structure of the drive unit.

[0026] Figure 5 Schematic diagram of the coordination between the drive unit and the floating plate.

[0027] Figure 6 Schematic diagram of the coordination between the loading platform and the floating plate.

[0028] Figure 7 Schematic diagram of the coordination between rack and gear.

[0029] Figure 8 It is a schematic diagram of the structure of the connecting part of the rack end.

[0030] Fig. 9 Schematic diagram of the structure of the loading base.

[0031] Fig.10 A schematic diagram of the structure of the clamp.

[0032] Fig.11 Schematic diagram of the load unit structure.

[0033] In the figure:

[0034] Gear 1;

[0035] A first clamping portion 11;

[0036] Floating plate 2;

[0037] A second clamping portion 21;

[0038] Axial connection portion 22;

[0039] Limiting axis 23;

[0040] Drive unit 3;

[0041] Reduction gear box 31;

[0042] Motor 32;

[0043] Cam 33

[0044] Rack 4;

[0045] Connecting portion 41;

[0046] Loading platform 5;

[0047] Guide sleeve portion 51;

[0048] Clamp 6;

[0049] Loading base 7;

[0050] Load cell 9;

[0051] Friction disc 91;

[0052] A first clamping block 92;

[0053] A second clamping block 93;

[0054] Threaded rod 94;

[0055] Adjust the motor 95. DETAILED DESCRIPTION

[0056] 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.

[0057] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood as the usual meanings understood by people with ordinary skills in the field. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] A multi-purpose test equipment for actuators

[0059] like Figure 1 and Figure 2 As shown, it includes a double-layer bracket, a rotatably mounted gear 1, a floating plate 2 arranged on the same axis as the gear 1, a driving unit 3 for driving the floating plate 2 to move axially, a pair of racks 4 slidably mounted and meshing with the gear 1, and a load unit 9 for applying a load to the rotation of the gear 1.

[0060] Among them, the cooperation between gear 1 and floating plate 2 is as follows Figure 3 As shown, the floating plate 2 floats vertically and is located on the upper side of the gear 1, the driving unit 3 is located on the lower side of the floating plate 2, the gear 1 has a first clamping portion 11, and the floating plate 2 has a second clamping portion 21 that can be coupled with the first clamping portion 11. Specifically, the first clamping portion 11 is a first slotted tooth array circumferentially arranged on the gear 1, and the second clamping portion 21 is a second slotted tooth array circumferentially arranged on the floating plate 2; the upper portion of each slotted tooth in the first slotted tooth array is wedge-shaped, and the lower portion of each slotted tooth in the second slotted tooth array is wedge-shaped, so as to guide the insertion with each other.

[0061] The driving unit 3 is used to control the up and down movement of the floating plate 2. The driving unit 3 may be one or more. Figure 4 As shown, the driving unit 3 includes a reduction gear box 31, a motor 32 connected to the input end of the reduction gear box 31, and a cam 33 installed at the output end of the reduction gear box 31. The motor 32 drives the cam 33 to rotate to different angles.

[0062] The spatial relationship between the driving unit 3 and the floating plate 2 is as follows: Figure 5As shown, the cam 33 pushes the floating plate 2 from the bottom. When the floating plate 2 needs to be away from the gear 1, the driving unit 3 pushes the floating plate 2 from the bottom. When the floating plate 2 needs to be close to the gear 1, the driving unit 3 does not push the floating plate 2, and the floating plate 2 falls naturally under the action of gravity. In order to reduce friction, grease can be applied to the surface of the cam 33. When the driving unit 3 makes the floating plate 2 away from the gear 1, the first clamping part 11 and the second clamping part 21 are separated from each other and cannot transmit power to each other. When the driving unit 3 makes the floating plate 2 close to the gear 1, the first clamping part 11 and the second clamping part 21 are engaged with each other and can transmit power to each other.

[0063] like Figure 1 As shown, the actuator multi-purpose testing device further includes a fixedly installed loading platform 5; the loading platform 5 is located above the floating plate 2. Figure 6 As shown, the loading platform 5 has a guide sleeve portion 51 extending downward; the center of the floating plate 2 has a limit shaft 23 passing through the guide sleeve portion 51; the shaft connection portion 22 is a D-shaped hole, located at the top of the limit shaft 23, for plugging and connecting with the output shaft of the rotary actuator to be tested, so that the rotary actuator to be tested can apply a rotational driving force.

[0064] like Figure 1 and Figure 7 As shown, a slidably mounted rack 4 is provided on each side of the gear 1. When the rack 4 slides away from the gear 1, the rack 4 and the gear 1 are disengaged; when the rack 4 and the gear 1 need to be engaged, the gear 1 only needs to be pushed toward the direction of the gear 1 until the gear 1 is engaged.

[0065] like Figure 8 As shown, the rack 4 also has a connecting portion 41 for applying a linear driving force. The connecting portion 41 is provided at one end of each rack 4 away from the gear 1. The connecting portion 41 is a slot portion with a transverse opening, and a threaded hole for assembling a locking bolt is provided on the slot portion. Fig. 9 As shown, a loading base 7 is fixedly arranged in the direction opposite to each connecting portion 41 for fixing the actuator to be tested.

[0066] like Fig.10 As shown, a position-adjustable clamp 6 is provided on one side of the loading platform 5, and the clamp 6 is used to press and fix the actuator to be tested on the loading platform 5. The position of the clamp 6 is adjusted laterally by a screw.

[0067] like Fig.11As shown, the load unit 9 includes a rotatably mounted friction disc 91, a first clamping block 92 and a second clamping block 93 that clamp the friction disc 91 from both sides, a pair of parallel threaded rods 94 that adjust the distance between the first clamping block 92 and the second clamping block 93, and an adjusting motor 95 that drives the threaded rod 94 to rotate; the friction disc 91 is coaxially connected to the gear 1; the two ends of the first clamping block 92 are respectively threadedly sleeved on a threaded rod 94, and the two ends of the second clamping block 93 are respectively rotatably connected to the end of a threaded rod 94; the threaded rod 94 is connected to the output shaft of the adjusting motor 95, and the adjusting motor 95 is non-rigidly fixedly installed. An elastic rubber layer is bonded to the bottom of the adjusting motor 95, and the elastic rubber layer is bonded to a fixed rigid substrate.

[0068] The above-mentioned actuator multi-purpose test equipment can simulate the load of the rotary actuator and the linear motion actuator during operation, so as to be used for performance testing of the actuator, such as testing the service life, output torque, maximum thrust and other performance parameters.

[0069] Specifically, when it is necessary to test the rotary actuator, the housing of the rotary actuator to be tested is fixed, the output shaft of the rotary actuator to be tested is slidably engaged and connected to the shaft connection portion 22, the first engaging portion 11 is coupled with the second engaging portion 21 through the driving unit 3, the rack 4 is slid to a position where it is disengaged from the gear 1, and the rotary actuator to be tested works to overcome the load of the load unit 9 to simulate actual working conditions.

[0070] When it is necessary to test the linear motion actuator, fix the housing of the linear motion actuator to be tested, connect the linear motion part of the linear motion actuator to be tested to the connecting part 41, separate the first clamping part 11 from the second clamping part 21 through the driving unit 3, and the linear motion actuator to be tested will work, driving the rack 4 to slide and then driving the gear 1 to rotate, overcoming the load of the load unit 9 to simulate the actual working conditions.

[0071] 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 multi-purpose test equipment for actuators, Features: It comprises a rotatably mounted gear (1), a floating plate (2) arranged on the same axis as the gear (1), a driving unit (3) for driving the floating plate (2) to move axially, a rack (4) slidably mounted on both sides of the gear (1) and capable of meshing with the gear (1), a load unit (9) for applying a load to the rotation of the gear (1), and a fixedly mounted loading platform (5); The gear (1) has a first clamping portion (11), and the floating plate (2) has a second clamping portion (21) that can be coupled to the first clamping portion (11); when the driving unit (3) moves the floating plate (2) away from the gear (1), the first clamping portion (11) and the second clamping portion (21) are separated from each other; when the driving unit (3) moves the floating plate (2) closer to the gear (1), the first clamping portion (11) and the second clamping portion (21) are coupled to each other; The axis of the floating disk (2) also has a shaft connection portion (22) for applying a rotational driving force; the loading platform (5) is located above the floating disk (2), and the loading platform (5) has a guide sleeve portion (51) extending downward; the floating disk (2) has a limit shaft (23) passing through the guide sleeve portion (51) at the center; the shaft connection portion (22) is located at the top end of the limit shaft (23); the shaft connection portion (22) is used to be plugged and connected with the output shaft of the rotary actuator to be tested, so as to apply a rotational driving force to the rotary actuator to be tested; When the rack (4) slides away from the gear (1), the rack (4) is disengaged from the gear (1); the rack (4) also has a connecting portion (41) for applying a linear driving force; the connecting portion (41) is arranged at one end of each rack (4) away from the gear (1), and a loading base (7) is fixedly arranged in a direction opposite to each connecting portion (41) for fixing a linear motion actuator to be tested.

2. The actuator multi-purpose testing device according to claim 1, Features: The floating plate (2) floats vertically and is located on the upper side of the gear (1), and the driving unit (3) is located on the lower side of the floating plate (2). When the floating plate (2) needs to be away from the gear (1), the driving unit (3) lifts the floating plate (2) from the lower side. When the floating plate (2) needs to be close to the gear (1), the driving unit (3) does not push the floating plate (2), and the floating plate (2) falls naturally due to the action of gravity.

3. The actuator multi-purpose testing device according to claim 1, Features: A position-adjustable clamp (6) is also provided on one side of the loading platform (5), and the clamp (6) is used to press and fix the rotary actuator to be tested on the loading platform (5).

4. The actuator multi-purpose testing device according to claim 1, Features: The first clamping portion (11) is a first tooth array circumferentially arranged on the gear (1), and the second clamping portion (21) is a second tooth array circumferentially arranged on the floating plate (2); the upper portion of each tooth in the first tooth array is wedge-shaped, and the lower portion of each tooth in the second tooth array is wedge-shaped, so as to guide the teeth to engage with each other.

5. The actuator multi-purpose testing device according to claim 1, Features: The connecting portion (41) is a slot portion with a transverse opening, and a threaded hole for assembling a locking bolt is provided on the slot portion.

6. The actuator multi-purpose testing device according to claim 1, Features: The load unit (9) comprises a rotatably mounted friction disc (91), a first clamping block (92) and a second clamping block (93) for clamping the friction disc (91) from both sides, a pair of parallel threaded rods (94) for adjusting the distance between the first clamping block (92) and the second clamping block (93), and an adjustment motor (95) for driving the threaded rods (94) to rotate; The friction disc (91) is coaxially connected to the gear (1); the two ends of the first clamping block (92) are respectively threadedly sleeved on the threaded rod (94), and the two ends of the second clamping block (93) are respectively rotatably connected to the end of the threaded rod (94); the threaded rod (94) is connected to the output shaft of the adjusting motor (95), and the adjusting motor (95) is non-rigidly fixedly installed.

7. A testing method for the actuator multi-purpose testing device according to any one of claims 1 to 6, Features: When the rotary actuator needs to be tested, the housing of the rotary actuator to be tested is fixed, the output shaft of the rotary actuator to be tested is slidably engaged and connected to the shaft connection portion (22), the first engaging portion (11) is coupled to the second engaging portion (21) via the driving unit (3), the rack (4) is slid to a position where it is disengaged from the gear (1), and the rotary actuator to be tested works to overcome the load of the load unit (9) to simulate actual working conditions; When it is necessary to test the linear motion actuator, the housing of the linear motion actuator to be tested is fixed, the linear motion part of the linear motion actuator to be tested is connected to the connecting portion (41), the first clamping portion (11) is separated from the second clamping portion (21) by the driving unit (3), and the linear motion actuator to be tested is operated to drive the rack (4) to slide and then drive the gear (1) to rotate, thereby overcoming the load of the load unit (9) to simulate actual working conditions.

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