Sensor durability test device

Abstract

The utility model relates to the technical field of sensor testing, in particular to a sensor durability testing device which comprises a base, a supporting mechanism, a driving mechanism and a connecting cylinder, a sensor can be placed on the base, a cover frame is slidably connected to the top of the side face of the base, a plurality of sliding blocks are fixedly connected to the side face of the cover frame, and the supporting mechanism is arranged on the base. The driving mechanism is arranged on the supporting mechanism, the connecting cylinder is arranged in the driving mechanism, and the bottom of the inner side face of the connecting cylinder is slidably connected with an extrusion cylinder. According to the utility model, the connecting cylinder is slidably connected with the extrusion cylinder, so that the connecting cylinder can move up and down in the driving mechanism in a reciprocating manner, the connecting cylinder can extrude the extrusion cylinder through the reset spring, the extrusion cylinder extrudes the pressure sensor through the cover frame, and the extrusion force applied to the pressure sensor is continuously changed through the reciprocating movement of the connecting cylinder; the use environment can be simulated as much as possible, and the test accuracy can be improved.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing technology, specifically a sensor durability testing device. Background Technology

[0002] A sensor is a detection device that converts the physical quantity to be sensed into an electrical signal or other form of output signal through a specific sensing element to meet the requirements of information processing, display, recording, and control. Among them, pressure sensors can measure the pressure on an object and convert it into a readable value. Pressure sensors are widely used in industrial equipment for pressure detection. During the production process of pressure sensors, it is usually necessary to verify the durability of the pressure sensor by applying pressure to the pressure sensor for a certain period of time and checking whether the reading of the pressure sensor is still accurate.

[0003] Existing durability testing equipment for pressure sensors typically applies a fixed pressure to the sensor continuously during use. However, in some working environments, the pressure experienced by the pressure sensor may vary constantly. Therefore, if only a fixed pressure is applied to the pressure sensor, the durability results obtained from the test may differ from the actual working conditions. Utility Model Content

[0004] The purpose of this invention is to provide a sensor durability testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sensor durability testing device includes a base, a support mechanism, a drive mechanism, and a connecting cylinder;

[0007] The base can hold a sensor, and a cover frame is slidably connected to the top side of the base. Several sliding blocks are fixedly connected to the side of the cover frame.

[0008] The support mechanism is mounted on the base;

[0009] The drive mechanism is mounted on the support mechanism;

[0010] The connecting cylinder is located inside the drive mechanism. A compression cylinder is slidably connected to the bottom of the inner side of the connecting cylinder. A return spring is fixedly connected to the bottom surface of the compression cylinder and fixedly connected to the top surface of the connecting cylinder.

[0011] Furthermore, the sensor durability testing device also includes a rotating frame and a connecting frame;

[0012] The rotating frame is located inside the drive mechanism. A toothed ring is fixedly connected to the top side of the rotating frame, and two limiting rails are fixedly connected to the inner side of the rotating frame.

[0013] The connecting frame is slidably connected to the top side of the connecting cylinder, and two round blocks that are slidably connected to the sides of the two limiting rails are fixedly connected to the top side of the connecting frame.

[0014] Furthermore, the drive mechanism includes a drive box, a drive motor, a drive shaft, and a connecting gear;

[0015] The drive box is located on top of the support mechanism, and the inner side of the drive box is rotatably connected to the side of the rotating frame;

[0016] The drive motor is fixedly connected to the bottom surface inside the drive box;

[0017] The drive shaft is rotatably connected to the top surface inside the drive box, and the bottom end of the drive shaft is connected to the output end of the drive motor.

[0018] The connecting gear is fixedly sleeved on the side of the drive shaft, and the connecting gear meshes with the gear ring for transmission.

[0019] Furthermore, the top surface of the drive box is fixedly connected to two positioning rods that are slidably connected to the inner side surface of the connecting frame.

[0020] Preferably, a fixing plate is fixedly connected to the top surface of the connecting cylinder, and connecting screws that are screwed to the inner surfaces of the connecting frame are screwed onto both inner sides of the fixing plate. A lifting rod is fixedly connected to the top surface of the fixing plate.

[0021] Preferably, the support mechanism includes a fixing ring, two hydraulic rods, and a support plate;

[0022] The retaining ring is fixedly connected to the side of the base;

[0023] Both hydraulic rods are positioned at the top of the retaining ring;

[0024] The support plate is fixedly connected to the bottom surface of the drive box, the connecting cylinder passes through the inside of the support plate, and the bottom surface of the support plate is connected to the output ends of two hydraulic rods.

[0025] Furthermore, the support mechanism also includes two limiting cylinders and two limiting rods;

[0026] Both limiting cylinders are fixedly connected to the top surface of the fixed ring. The inner side of the limiting cylinder is fixedly connected to the side of the adjacent hydraulic rod, and the side of the limiting cylinder is slidably connected to the inner side of the adjacent sliding block.

[0027] Both limiting rods are fixedly connected to the top surface of the fixed ring, and the side of the limiting rod is slidably connected to the inner side of the adjacent sliding block.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] 1. A compression cylinder is slidably connected to the connecting cylinder, allowing several pressure sensors to be placed on the base. The pressure sensors are then covered by a cover frame, where they share the weight of the cover frame. The connecting cylinder then moves up and down within the drive mechanism. The connecting cylinder is compressed by a return spring, and the compression cylinder, in turn, compresses the pressure sensors through the cover frame. The reciprocating movement of the connecting cylinder continuously changes the compressive force on the pressure sensors, thus simulating the operating environment as closely as possible, improving the accuracy of the test, and allowing multiple pressure sensors to be tested simultaneously, thereby increasing testing efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a sensor durability testing device according to this utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of the connecting cylinder in this utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the drive mechanism in this utility model;

[0033] Figure 4 This is a schematic diagram of the internal structure of the rotating frame in this utility model;

[0034] Figure 5 This is a schematic diagram of the connecting frame structure in this utility model.

[0035] In the diagram: 1. Base; 11. Cover frame; 12. Sliding block; 2. Support mechanism; 21. Fixing ring; 22. Limiting cylinder; 23. Limiting rod; 24. Hydraulic rod; 25. Support plate; 3. Drive mechanism; 31. Drive box; 32. Drive motor; 33. Drive shaft; 34. Connecting gear; 4. Connecting cylinder; 41. Extrusion cylinder; 42. Return spring; 43. Fixing plate; 44. Lifting rod; 45. Connecting screw; 5. Rotating frame; 51. Gear ring; 52. Limiting rail; 6. Connecting frame; 61. Round block; 7. Positioning rod. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figure 1-5In this embodiment of the present invention, a sensor durability testing device includes a base 1, a support mechanism 2, a drive mechanism 3, a connecting cylinder 4, a rotating frame 5, and a connecting frame 6.

[0038] The base 1 can hold the sensor. A cover frame 11 is slidably connected to the top side of the base 1. Several sliding blocks 12 are fixedly connected to the side of the cover frame 11. The support mechanism 2 is set on the base 1, and the drive mechanism 3 is set on the support mechanism 2.

[0039] The connecting cylinder 4 is located inside the drive mechanism 3. A pressing cylinder 41 is slidably connected to the bottom of the inner side of the connecting cylinder 4. A return spring 42 is fixedly connected to the bottom of the pressing cylinder 41 and fixedly connected to the top of the inner side of the connecting cylinder 4. The rotating frame 5 is located inside the drive mechanism 3. A toothed ring 51 is fixedly connected to the top of the side of the rotating frame 5. Two limiting rails 52 are fixedly connected to the inner side of the rotating frame 5. The connecting frame 6 is slidably connected to the top of the side of the connecting cylinder 4. The rotating frame 5 is located inside the drive mechanism 3. The connecting frame 6 is located inside the rotating frame 5. The connecting cylinder 4 is located inside the connecting frame 6. Two round blocks 61 are fixedly connected to the top of the side of the connecting frame 6 and slidably connected to the sides of the two limiting rails 52. The round blocks 61 are located between the two limiting rails 52. The limiting rail 52 includes two V-shaped segments. The two V-shaped segments are connected to each other. The round blocks 61 are located at the connection of the two V-shaped segments.

[0040] Specifically, after placing several pressure sensors on the base 1, the pressure sensors can be covered by the cover frame 11. At this time, the weight of the cover frame 11 is shared by the pressure sensors. Based on the combined weight of the cover frame 11 and the sliding block 12, as well as the number of pressure sensors, a fixed pressure value is obtained for each pressure sensor. Then, the pressure data measured by the pressure sensors is compared with the fixed pressure value to determine the accuracy of the pressure sensors. This allows the rotating frame 5 to rotate inside the drive mechanism 3. The rotating frame 5 can drive the limit rail 52 to rotate. 2. When rotating, the V-shaped section of the limiting rail 52 can make the circular block 61 move downward first. After the circular block 61 passes the bottom inflection point of the V-shaped section, it can move upward under the action of the V-shaped section. After the circular block 61 moves from one V-shaped section to another, it can continue to move downward and then upward. In this way, when the rotating frame 5 drives the limiting rail 52 to rotate continuously, the circular block 61 can move up and down back and forth. The circular block 61 can drive the connecting frame 6 to move, and the connecting frame 6 can drive the connecting cylinder 4 to move, thereby causing the connecting cylinder 4 to move up and down back and forth.

[0041] When the connecting cylinder 4 moves downward, the extrusion cylinder 41 presses against the top surface of the cover frame 11. Then, the connecting cylinder 4 can press the extrusion cylinder 41 through the return spring 42. The extrusion cylinder 41 can then press the pressure sensor through the cover frame 11, gradually increasing the pressure on the pressure sensor. Conversely, when the connecting cylinder 4 moves upward, the pressure on the pressure sensor decreases. This reciprocating movement of the connecting cylinder 4 continuously changes the extrusion force on the pressure sensor, thus simulating the operating environment as closely as possible and improving the accuracy of the test. After a certain period, the connecting cylinder 4 can move upward, causing the extrusion cylinder 41 to detach from the top of the cover frame 11. At this point, the pressure data measured by the pressure sensor can be compared with the fixed pressure value to understand the change in the pressure sensor's measurement accuracy and, consequently, its durability. Multiple pressure sensors can be tested simultaneously, improving testing efficiency.

[0042] A weight can be placed on the top of the cover frame 11 to test the durability of the pressure sensor in different pressure ranges. Several openings and slots can be made on the side of the cover frame 11 so that the wires of the pressure sensor can pass through the openings and slots to lead out the wires of the pressure sensor, supply power to the pressure sensor, and display the pressure data measured by the pressure sensor through the display interface.

[0043] Example 1

[0044] like Figure 3 As shown, in this embodiment, the drive mechanism 3 includes a drive box 31, a drive motor 32, a drive shaft 33, and a connecting gear 34;

[0045] The drive box 31 is located on top of the support mechanism 2. Two positioning rods 7 are fixedly connected to the inner top surface of the drive box 31 and slidably connected to the inner side of the connecting frame 6. The connecting frame 6 can slide up and down along the positioning rods 7. The drive box 31 can prevent the connecting frame 6 from rotating through the positioning rods 7. In this way, when the rotating frame 5 rotates, the limiting rail 52 can smoothly move the round block 61 up and down. When the rotating frame 5 stops rotating, the rotating frame 5 can limit the height of the round block 61 through the limiting rail 52, thereby limiting the height of the connecting frame 6. The inner side of the drive box 31 is rotatably connected to the side of the rotating frame 5. The rotating frame 5 can rotate inside the drive box 31. The drive motor 32 is fixedly connected to the inner bottom surface of the drive box 31. The drive shaft 33 is rotatably connected to the inner top surface of the drive box 31. The bottom end of the drive shaft 33 is connected to the output end of the drive motor 32. The connecting gear 34 is fixedly sleeved on the side of the drive shaft 33. The connecting gear 34 meshes with the gear ring 51 for transmission.

[0046] In specific implementation, the drive motor 32 can drive the drive shaft 33 to rotate, the drive shaft 33 can drive the connecting gear 34 to rotate, the connecting gear 34 can drive the gear ring 51 to rotate, thereby causing the rotating frame 5 to rotate, which in turn causes the connecting frame 6 to move the connecting cylinder 4 up and down, changing the pressure magnitude received by the pressure sensor. The rotation speed of the drive shaft 33 can be changed as needed, thereby changing the pressure change rate received by the pressure sensor.

[0047] like Figure 1-2 As shown, in this embodiment, the support mechanism 2 includes a fixed ring 21, two hydraulic rods 24, a support plate 25, two limiting cylinders 22, and two limiting rods 23;

[0048] A fixed ring 21 is fixedly connected to the side of the base 1. Two hydraulic rods 24 are both located on the top of the fixed ring 21. A support plate 25 is fixedly connected to the bottom surface of the drive box 31. A connecting cylinder 4 passes through the inside of the support plate 25. The bottom surface of the support plate 25 is connected to the output end of the two hydraulic rods 24. Two limiting cylinders 22 are fixedly connected to the top surface of the fixed ring 21. The inner side of the limiting cylinder 22 is fixedly connected to the side of the adjacent hydraulic rod 24. The side of the limiting cylinder 22 is slidably connected to the inner side of the adjacent sliding block 12. Two limiting rods 23... All are fixedly connected to the top surface of the fixed ring 21. The base 1 can support the fixed ring 21. The fixed ring 21 can support the limiting cylinder 22 and the limiting rod 23. The limiting cylinder 22 can support the support plate 25 through the hydraulic rod 24. The support plate 25 can support the drive box 31. The side of the limiting rod 23 is slidably connected to the inner side of the adjacent sliding block 12. Several sliding blocks 12 can slide on the corresponding limiting cylinder 22 and limiting rod 23. The limiting cylinder 22 and the limiting rod 23 can limit the cover frame 11 through the sliding block 12.

[0049] In practice, after the test is completed, the support plate 25 can be moved upward by the hydraulic rod 24, thereby moving the drive mechanism 3 upward and pulling the extrusion cylinder 41 and the cover frame 11 apart by a sufficient distance. At this time, the cover frame 11 can be moved upward along the limiting cylinder 22, so that the cover frame 11 is separated from the top of the base 1. Then the pressure sensor on the base 1 can be removed and a new pressure sensor can be placed. During the test, the height of the support plate 25 can be adjusted by the hydraulic rod 24, thereby adjusting the initial distance between the extrusion cylinder 41 and the cover frame 11. This way, the bottom of the extrusion cylinder 41 will contact the top surface of the cover frame 11 after the extrusion cylinder 41 moves downward by a sufficient distance, thereby reducing the range of pressure changes experienced by the cover frame 11.

[0050] Example 2

[0051] Based on Example 1, such as Figure 5As shown, in this embodiment, a fixing plate 43 is fixedly connected to the top surface of the connecting cylinder 4. The fixing plate 43 can abut against the top surface of the connecting frame 6. The inner sides of both sides of the fixing plate 43 are screwed with connecting screws 45 that are screwed with the inner side of the connecting frame 6. A lifting rod 44 is fixedly connected to the top surface of the fixing plate 43.

[0052] In practice, the fixing plate 43 can be connected to the connecting frame 6 by connecting screw 45, thereby fixing the connecting cylinder 4 inside the connecting frame 6. In this way, the connecting frame 6 can drive the connecting cylinder 4 to move up and down through the fixing plate 43 and connecting screw 45. The connecting screw 45 can be unscrewed from the inside of the fixing plate 43 and the connecting frame 6. At this time, the connecting cylinder 4 can be lifted upward by lifting rod 44, thereby removing the connecting cylinder 4 and the extrusion cylinder 41 from the inside of the connecting frame 6. This allows for the replacement of the connecting cylinder 4, the extrusion cylinder 41, and the return spring 42, thereby replacing the return spring 42 with different spring coefficients, thereby increasing or decreasing the pressure change range experienced by the pressure sensor during the test.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sensor durability test device characterized by comprising: The utility model relates to a sensor placing device, including: Base (1) can place sensor, base (1) side top slidingly connected with cover frame (11), cover frame (11) side fixedly connected with a plurality of sliding blocks (12); Supporting mechanism (2) is arranged on base (1); Driving mechanism (3) is arranged on supporting mechanism (2); Connecting cylinder (4) is arranged in driving mechanism (3) inside, connecting cylinder (4) inboard bottom slidingly connected with extrusion cylinder (41), extrusion cylinder (41) inner bottom fixedly connected with reset spring (42) fixedly connected with connecting cylinder (4) inner top.

2. The sensor durability test device according to claim 1, characterized by Also including: Rotary frame (5) is arranged in the inside of driving mechanism (3), rotary frame (5) side top fixedly connected with gear ring (51), rotary frame (5) inboard fixedly connected with two limit rails (52); Connecting frame (6) is slidingly connected on the side top of connecting cylinder (4), and the side top of connecting frame (6) is fixedly connected with two circular blocks (61) slidingly connected with the side of two limit rails (52).

3. The sensor durability test device according to claim 2, characterized by Driving mechanism (3) includes: Driving box (31) is arranged on the top of supporting mechanism (2), and the inboard of driving box (31) is rotatably connected with the side of rotary frame (5); Driving motor (32) is fixedly connected on the inner bottom of driving box (31); Driving shaft (33) is rotatably connected on the inner top of driving box (31), and the bottom end of driving shaft (33) is drivingly connected with the output end of driving motor (32); Connecting gear (34) is fixedly sleeved on the side of driving shaft (33), and connecting gear (34) is drivingly engaged with gear ring (51).

4. The sensor durability test device according to claim 3, characterized by The inboard of driving box (31) is fixedly connected with two positioning rods (7) slidingly connected with the inboard of connecting frame (6).

5. The sensor durability test apparatus according to claim 2, wherein The top of connecting cylinder (4) is fixedly connected with fixed plate (43), and the inboard of both sides of fixed plate (43) is screwingly connected with connecting screw (45) screwingly connected with the inboard of connecting frame (6), and the top of fixed plate (43) is fixedly connected with lifting rod (44).

6. The sensor durability test apparatus according to claim 2, wherein Supporting mechanism (2) includes: Fixed ring (21) is fixedly connected on the side of base (1); Two hydraulic rods (24) are arranged on the top of fixed ring (21); Supporting plate (25) is fixedly connected on the bottom of driving box (31), and connecting cylinder (4) passes through the inside of supporting plate (25), and the bottom of supporting plate (25) is drivingly connected with the output end of two hydraulic rods (24).

7. The sensor durability test device according to claim 6, wherein Supporting mechanism (2) further includes: Two limit cylinders (22) are fixedly connected on the top of fixed ring (21), and the inboard of limit cylinder (22) is fixedly connected with the side of adjacent hydraulic rod (24), and the side of limit cylinder (22) is slidingly connected with the inboard of adjacent sliding block (12); Two limit rods (23) are fixedly connected on the top of fixed ring (21), and the side of limit rod (23) is slidingly connected with the inboard of adjacent sliding block (12).

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