Straight stroke actuator detection device

Abstract

The utility model relates to the technical field of linear actuator detection, in particular to a linear actuator detection device which comprises a bottom plate, a mounting groove, a support, a contact, a linear actuator, a collision block, a calibration assembly, a reset assembly, an adjusting assembly, an adjusting assembly, an adjusting assembly and a fixing assembly. A support is arranged on the inner side of the mounting groove and slidably connected with the mounting groove, a contact is arranged on one side of the support, a linear execution mechanism is arranged above the bottom plate, a collision block is arranged at one end of the linear execution mechanism, and a calibration assembly is arranged above the bottom plate. The calibration assembly comprises a first fixing frame, a cam shaft, a cam block, a connecting block, a rotating shaft, a lever, a sliding groove, a guide rod, a toothed rail plate, a second fixing frame, a ratchet wheel and a locking block. According to the utility model, a mechanical linkage type dynamic compensation mechanism is constructed to generate micro displacement, and the gradual position compensation of the contact support is realized by matching with the one-way locking characteristic of the ratchet wheel.

Description

Technical Field

[0001] This utility model relates to the field of linear actuator testing technology, and in particular to a linear actuator testing device. Background Technology

[0002] In the field of linear actuator testing, existing testing equipment mostly adopts a fixed contact structure. During long-term use, the detection gap will develop irreversible deviations due to mechanical wear, which seriously affects the positioning accuracy. Although some improved devices have added manual calibration mechanisms, they require shutdown operation and have limited adjustment range, making it difficult to meet the needs of high-precision industrial scenarios. In addition, traditional calibration systems lack wear compensation mechanisms. When the actuator stroke exceeds the design threshold, it is easy to cause mechanical interference or signal misinterpretation, which poses safety hazards.

[0003] Therefore, to address the above problems, a linear actuator detection device is proposed. A mechanical linkage dynamic compensation mechanism is constructed to generate micro-displacement, which, in conjunction with the unidirectional locking characteristic of the ratchet, achieves progressive position compensation of the contact bracket. Utility Model Content

[0004] In order to overcome the problems of dynamic compensation for mechanical wear and low calibration efficiency in the daily use of traditional linear actuator testing devices.

[0005] The technical solution of this utility model is as follows: a linear actuator testing device, comprising a base plate, a mounting groove, a bracket, a contact, a linear actuator, a stop block, a calibration component, a reset component, an adjustment component, a regulating component, an adjusting component, and a fixing component. The base plate has a mounting groove on its inner side, and a bracket is mounted inside the mounting groove. The bracket and the mounting groove are slidably connected. A contact is located on one side of the bracket. A linear actuator is located above the base plate, and a stop block is located at one end of the linear actuator. A calibration component is located above the base plate, and a reset component is located on one side of the calibration component. An adjustment component is located on one side of the base plate, and an adjusting component is located above the adjustment component. A fixing component is located outside the adjusting component. The calibration component includes a first fixing bracket and a camshaft. The system comprises a cam block, a connecting block, a rotating shaft, a lever, a slide groove, a guide rod, a geared rail plate, a second fixed frame, a ratchet, and a locking block. A first fixed frame is positioned above the base plate. A camshaft is located inside the first fixed frame, rotatably connected to it. A cam block is located at one end of the camshaft. A connecting block is located on one side of the cam block. A rotating shaft is located inside the first fixed frame, rotatably connected to it. A lever is located at one end of the rotating shaft, with a slide groove on its inner side. A guide rod is located on one side of the bracket, slidably connected to the slide groove. A geared rail plate is located on the other side of the bracket. A second fixed frame is positioned above the bracket. A ratchet is located on one side of the second fixed frame, meshing with the geared rail plate. A locking block is located on one side of the second fixed frame.

[0006] Preferably, the linear actuator reciprocates to drive the impact block to move linearly, which in turn drives the connecting block to move linearly. When the impact block reaches the contact point, it triggers the contact. Simultaneously, the moving block pushes the cam block to rotate, which in turn drives the camshaft to rotate. The rotation of the cam block causes the lever to swing around its midpoint. The swing of the lever causes the guide rod to move linearly, which in turn fine-tunes the position of the bracket. During the fine-tuning of the bracket position, the toothed rail plate moves, which drives the ratchet to rotate. The ratchet position is locked by the locking block, so that the bracket can only be adjusted in one direction. Thus, after each impact block triggers the contact, the bracket can produce a small displacement, dynamically compensating for wear, and ensuring that the gap between the contact and the impact block is always kept within the set range, achieving automatic calibration.

[0007] Preferably, the reset assembly includes a fixing block and a reset spring. The fixing block is provided at one end of the camshaft, and the reset spring is provided on one side of the fixing block. One end of the reset spring is connected to the first fixing frame.

[0008] Preferably, the adjustment assembly includes a movable frame and a first motor, with the movable frame located inside the mounting slot and the first motor located on one side of the base plate.

[0009] Preferably, the adjustment assembly also includes a first threaded rod, the output end of the first motor is provided with the first threaded rod, and the first threaded rod is threadedly connected to the moving frame.

[0010] Preferably, the adjustment assembly includes a mounting bracket and a second motor, with the mounting bracket provided on one side of the movable frame and the second motor provided on one side of the mounting bracket.

[0011] Preferably, the adjustment assembly also includes a second threaded rod, the output end of the second motor is provided with the second threaded rod, and the second threaded rod has two opposite threads.

[0012] Preferably, the fixing component includes a movable block and a clamping block. The movable block is provided on the outer side of the second threaded rod. The movable block and the second threaded rod are threadedly connected. Two sets of movable blocks are provided. A clamping block is provided on one side of the movable block.

[0013] The beneficial effects of this utility model are:

[0014] The linear actuator reciprocates to drive the impact block to move linearly, which in turn drives the connecting block to move linearly. When the impact block reaches the contact point, it triggers the contact. Simultaneously, the moving block pushes the cam block to rotate, which in turn drives the camshaft to rotate. The rotation of the cam block causes the lever to swing around its midpoint. The swing of the lever causes the guide rod to move linearly, which in turn fine-tunes the position of the bracket. During the fine-tuning of the bracket position, the toothed rail plate moves, causing the ratchet to rotate. The locking block locks the position of the ratchet, allowing the bracket to be adjusted in only one direction. Thus, after each impact block triggers the contact, the bracket can produce a small displacement, dynamically compensating for wear and ensuring that the gap between the contact point and the impact block is always kept within the set range, achieving automatic calibration. Attached Figure Description

[0015] Figure 1 The diagram shown is a first three-dimensional structural schematic of the linear actuator detection device of this utility model;

[0016] Figure 2 The diagram shown is a second three-dimensional structural schematic of the linear actuator detection device of this utility model;

[0017] Figure 3 The diagram shown is a third perspective structural schematic of the linear actuator detection device of this utility model;

[0018] Figure 4 The diagram shown is a partial three-dimensional structural schematic of the linear actuator detection device of this utility model;

[0019] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Mounting groove; 3. Bracket; 4. Contact point; 5. Linear actuator; 6. Impact block; 101. First fixed frame; 102. Camshaft; 103. Cam block; 104. Connecting block; 105. Rotating shaft; 106. Lever; 107. Slide groove; 108. Guide rod; 109. Gear plate; 110. Second fixed frame; 111. Ratchet; 112. Locking block; 201. Fixed block; 202. Return spring; 301. Moving frame; 302. First motor; 303. First threaded rod; 401. Mounting frame; 402. Second motor; 403. Second threaded rod; 501. Moving block; 502. Clamping block. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 and Figure 2This utility model provides an embodiment of a linear actuator testing device, comprising a base plate 1, a mounting groove 2, a bracket 3, a contact 4, a linear actuator 5, a stop block 6, a calibration component, a reset component, an adjustment component, a regulating component, an adjustment component, and a fixing component. The mounting groove 2 is formed on the inner side of the base plate 1, and the bracket 3 is disposed on the inner side of the mounting groove 2. The bracket 3 and the mounting groove 2 are slidably connected. The contact 4 is disposed on one side of the bracket 3. The linear actuator 5 is disposed above the base plate 1, and a stop block 6 is disposed at one end of the linear actuator 5. The calibration component is disposed above the base plate 1, and a reset component is disposed on one side of the calibration component. The adjustment component is disposed on one side of the base plate 1, and an adjustment component is disposed above the adjustment component. A fixing component is disposed on the outer side of the adjustment component. The calibration component includes a first fixing frame 101, a camshaft 102, a cam block 103, a connecting block 104, a rotating shaft 105, a lever 106, a slide groove 107, a guide rod 108, and a gear plate 109. 9. A second fixing frame 110, a ratchet 111, and a locking block 112 are provided. A first fixing frame 101 is provided above the base plate 1. A camshaft 102 is provided on the inner side of the first fixing frame 101. The camshaft 102 and the first fixing frame 101 are rotatably connected. A cam block 103 is provided at one end of the camshaft 102. A connecting block 104 is provided on one side of the impact block 6. A rotating shaft 105 is provided on the inner side of the first fixing frame 101. The rotating shaft 105 and the first fixing frame 101 are rotatably connected. A lever 106 is provided at one end of the rotating shaft 105. A slide groove 107 is provided on the inner side of the lever 106. A guide rod 108 is provided on one side of the bracket 3. The guide rod 108 and the slide groove 107 are slidably connected. A toothed rail plate 109 is provided on the other side of the bracket 3. A second fixing frame 110 is provided above the bracket 3. A ratchet 111 is provided on one side of the second fixing frame 110. The ratchet 111 and the toothed rail plate 109 are meshed and connected. A locking block 112 is provided on one side of the second fixing frame 110.

[0022] Please see Figure 3 and Figure 4 In this embodiment, the reset component includes a fixing block 201 and a reset spring 202. The fixing block 201 is provided at one end of the camshaft 102, and the reset spring 202 is provided on one side of the fixing block 201. One end of the reset spring 202 is connected to the first fixing frame 101. In use, the reset spring 202 resets the position of the camshaft 102 after the impact block 6 returns. The adjustment component includes a moving frame 301 and a first motor 302. The moving frame 301 is provided inside the mounting groove 2, and the first motor 302 is provided on one side of the base plate 1. The adjustment component also includes a first threaded rod 303. The output end of the first motor 302 is provided with the first threaded rod 303. The first threaded rod 303 is threadedly connected to the moving frame 301. In use, the first motor 302 is started to drive the first threaded rod 303 to rotate, and the rotation of the first threaded rod 303 drives the moving frame 301 to move linearly.

[0023] The adjustment assembly includes a mounting bracket 401 and a second motor 402. The mounting bracket 401 is located on one side of the movable bracket 301, and the second motor 402 is located on one side of the mounting bracket 401. The adjustment assembly also includes a second threaded rod 403. The output end of the second motor 402 is provided with the second threaded rod 403. The second threaded rod 403 has two opposite threads. In use, the second motor 402 is started to drive the second threaded rod 403 to rotate. The fixing assembly includes a moving block 501 and a clamping block 502. The moving block 501 is located on the outer side of the second threaded rod 403. The moving block 501 and the second threaded rod 403 are threadedly connected. There are two sets of moving blocks 501. The clamping block 502 is located on one side of the moving block 501. In use, the rotation of the second threaded rod 403 drives the moving block 501 to move linearly. The linear movement of the moving block 501 drives the clamping block 502 to move linearly. The linear movement of the clamping block 502 fixes the linear actuator 5 under test.

[0024] During operation, when the linear actuator is started, its output end impact block 6 reciprocates linearly with the actuator piston rod; when the impact block 6 moves to the contact point 4, a detection signal is triggered, and at the same time, the connecting block 104 on the side of the impact block 6 pushes the cam block 103 in the calibration assembly to rotate; the cam block 103 transmits the rotational motion to one end of the lever 106 through the camshaft 102, and the lever 106 swings around the pivot 105, while the slide groove 107 at the other end drives the guide rod 108 to produce linear displacement; the guide rod 108 is rigidly connected to the bracket 3. The connection drives the bracket 3 to slide slightly within the mounting groove 2; when the bracket 3 moves, the toothed track plate 109 on its back engages with the ratchet 111, and the locking block 112 restricts the ratchet 111 from rotating counterclockwise, so that the bracket 3 can only move in one direction by stepping through the ratchet 111; each time the impact block 6 triggers the contact 4, the bracket 3 automatically compensates for the wear gap between the contact 4 and the impact block 6, ensuring that the detection accuracy is stable within the set threshold; the reset spring 202 pushes the camshaft 102 to reset when the impact block 6 returns, preparing for the next calibration cycle.

[0025] When it is necessary to adjust the reference position of the impact block 6 as a whole, the first motor 302 on the side of the base plate 1 is started; the first motor 302 drives the first threaded rod 303 to rotate, and the movable frame 301 connected to it by the thread moves linearly in the mounting groove 2 through the slider.

[0026] The linear actuator under test is placed between the two sets of clamping blocks 502 of the adjustment assembly, and the second motor 402 on the mounting bracket 401 is started. The second motor 402 drives the second threaded rod 403 with bidirectional threads to rotate, and the two sets of moving blocks 501 move synchronously towards each other through opposite threads. The clamping blocks 502 on the side of the moving blocks 501 can adapt to the outer diameter of the actuator and apply radial clamping force to ensure that the actuator axis is aligned with the moving direction of the impact block 6.

[0027] Through the above steps, the reciprocating motion of the linear actuator 5 drives the impact block 6 to move linearly, and the linear movement of the impact block 6 drives the connecting block 104 to move linearly. When the impact block 6 moves to the contact point 4 and triggers the contact point 4, the moving block 501 pushes the cam block 103 to rotate and drives the cam shaft 102 to rotate. The rotation of the cam block 103 drives the lever 106 to swing around its midpoint. The swing of the lever 106 drives the guide rod 108 to move linearly. The linear movement of the guide rod 108 finely adjusts the position of the bracket 3. When the position of the bracket 3 is finely adjusted, the gear plate 109 moves and drives the ratchet 111 to rotate. The locking block 112 locks the position of the ratchet 111, so that the bracket 3 can only be adjusted in one direction. Thus, after each time the impact block 6 triggers the contact point 4, the bracket 3 can produce a small displacement, dynamically compensating for wear, so as to ensure that the gap between the contact point 4 and the impact block 6 is always kept within the set range, and automatic calibration is achieved.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A linear actuator detection device, comprising a base plate (1); characterized in that: It also includes a mounting slot (2), a bracket (3), a contact (4), a linear actuator (5), a stop block (6), a calibration component, a reset component, an adjustment component, a regulating component, an adjustment component, an adjustment component, and a fixing component. A mounting slot (2) is provided on the inner side of the base plate (1), and a bracket (3) is provided on the inner side of the mounting slot (2). The bracket (3) and the mounting slot (2) are slidably connected. A contact (4) is provided on one side of the bracket (3). A linear actuator (5) is provided above the base plate (1), and a stop block (6) is provided at one end of the linear actuator (5). A calibration component is provided above the plate (1), a reset component is provided on one side of the calibration component, an adjustment component is provided on one side of the base plate (1), an adjustment component is provided above the adjustment component, and a fixing component is provided on the outside of the adjustment component. The calibration component includes a first fixing frame (101), a camshaft (102), a cam block (103), a connecting block (104), a rotating shaft (105), a lever (106), a slide (107), a guide rod (108), a gear plate (109), a second fixing frame (110), a ratchet (111), and a lock. A fixed block (112) is provided above the base plate (1), and a first fixed frame (101) is provided on the upper part of the base plate (1). A camshaft (102) is provided on the inner side of the first fixed frame (101). The camshaft (102) and the first fixed frame (101) are rotatably connected. A cam block (103) is provided at one end of the camshaft (102). A connecting block (104) is provided on one side of the impact block (6). A rotating shaft (105) is provided on the inner side of the first fixed frame (101). The rotating shaft (105) and the first fixed frame (101) are rotatably connected. A cam block (103) is provided at one end of the rotating shaft (105). There is a lever (106), and a groove (107) is provided on the inner side of the lever (106). A guide rod (108) is provided on one side of the bracket (3). The guide rod (108) and the groove (107) are slidably connected. A toothed rail plate (109) is provided on the other side of the bracket (3). A second fixing frame (110) is provided above the bracket (3). A ratchet (111) is provided on one side of the second fixing frame (110). The ratchet (111) and the toothed rail plate (109) are meshed and connected. A locking block (112) is provided on one side of the second fixing frame (110).

2. The linear actuator detection device according to claim 1, characterized in that: The reset assembly includes a fixing block (201) and a reset spring (202). The fixing block (201) is provided at one end of the camshaft (102), and the reset spring (202) is provided on one side of the fixing block (201). One end of the reset spring (202) is connected to the first fixing bracket (101).

3. The linear actuator detection device according to claim 1, characterized in that: The adjustment assembly includes a movable frame (301) and a first motor (302). The movable frame (301) is provided inside the mounting slot (2), and the first motor (302) is provided on one side of the base plate (1).

4. The linear actuator detection device according to claim 3, characterized in that: The adjustment assembly also includes a first threaded rod (303), the output end of the first motor (302) is provided with the first threaded rod (303), and the first threaded rod (303) and the moving frame (301) are threadedly connected.

5. The linear actuator detection device according to claim 3, characterized in that: The adjustment assembly includes a mounting bracket (401) and a second motor (402). The mounting bracket (401) is provided on one side of the movable frame (301), and the second motor (402) is provided on one side of the mounting bracket (401).

6. The linear actuator detection device according to claim 5, characterized in that: The adjustment assembly also includes a second threaded rod (403), and the output end of the second motor (402) is provided with the second threaded rod (403), which has two opposite threads.

7. The linear actuator detection device according to claim 6, characterized in that: The fixing component includes a movable block (501) and a clamping block (502). The movable block (501) is provided on the outside of the second threaded rod (403). The movable block (501) is threadedly connected to the second threaded rod (403). There are two sets of movable blocks (501). The clamping block (502) is provided on one side of the movable block (501).

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