A pressure sensor inspection tool

Abstract

The utility model belongs to pressure sensor field, concretely relates to a pressure sensor inspection tool, including work bench, the left side fixedly connected with support frame in work bench top, both sides all fixedly connected with electric cylinder in support frame top, the output of electric cylinder is penetrated to the bottom of support frame, the output of electric cylinder is fixedly connected with lifting probe group, the front side fixedly connected with fixed clamping plate in work bench top, the rear side of fixed clamping plate is provided with movable clamping plate, both sides all fixedly connected with pusher in movable clamping plate rear side. The utility model adds fixed clamping plate and movable clamping plate and other structures on the workbench, can reliably hold pressure sensor, combined with pusher, linkage plate and pull mechanism, can flexibly adjust the position of movable clamping plate, adapts to the inspection demand of different specifications pressure sensor, the overall structure design is compact, the degree of automation is higher, effectively promotes the efficiency and convenience of inspection work.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor technology, specifically a pressure sensor inspection fixture. Background Technology

[0002] According to patent authorization announcement number CN220794519U, a pressure sensor testing fixture is disclosed. This utility model relates to the field of pressure sensor technology. Its key technical features include: a testing platform with support plates fixedly connected to both its left and right sides; a top plate fixedly connected to the upper surfaces of the two support plates; two electric push rods fixedly mounted on the bottom surface of the top plate; a lifting plate fixedly connected to the telescopic ends of the two electric push rods; probes arranged at equal intervals fixedly mounted on the bottom surface of the lifting plate; a positioning seat fixedly connected to the upper surface of the testing platform; positioning grooves arranged at equal intervals on the upper surface of the testing platform; a movable plate above the testing platform; an electronic push-pull force gauge fixedly mounted on the upper surface of the testing platform; and a fixed plate fixedly mounted on the bottom surface of the testing platform. This pressure sensor testing fixture achieves the effect of simultaneously testing multiple pressure sensors, improving the testing speed of pressure sensors and facilitating pressure sensor testing and calibration.

[0003] However, existing technologies have the following problems: When the transmission plate pushes the moving plate to slide, because the transmission plate is in the middle of the moving plate, there will be a significant attenuation phenomenon in the force transmission process. This results in the thrust received by the two sides of the moving plate being significantly weaker than the thrust in the middle. This insufficient thrust on both sides directly affects the force state of the fixing pads on both sides of the moving plate. The fixing pads cannot obtain enough thrust to generate the corresponding clamping force, making it difficult for the pressure sensors installed on both sides to be effectively clamped. If the pressure sensors are not clamped sufficiently, gaps or uneven forces will appear between them and the contact surface, which will seriously reduce the detection accuracy and stability of the pressure sensors on both sides, and make it impossible to accurately reflect the actual pressure situation. Utility Model Content

[0004] The purpose of this invention is to provide a pressure sensor inspection fixture that solves the problem that when the transmission plate pushes the moving plate to slide, there is a significant attenuation phenomenon in the force transmission process because the transmission plate is in the middle position of the moving plate. This results in the thrust received on both sides of the moving plate being significantly weaker than the thrust in the middle. This insufficient thrust on both sides directly affects the force state of the fixing pads on both sides of the moving plate. The fixing pads cannot obtain enough thrust to generate the corresponding clamping force, making it difficult to effectively clamp the pressure sensors installed on both sides. If the pressure sensors are not clamped sufficiently, gaps or uneven forces will appear between them and the contact surface, which will seriously reduce the detection accuracy and stability of the pressure sensors on both sides and make it impossible to accurately reflect the actual pressure situation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure sensor inspection fixture, including a workbench, a support frame fixedly connected to the left side of the top of the workbench, electric cylinders fixedly connected to both sides of the top of the support frame, the output end of the electric cylinder extending through to the bottom of the support frame, a lifting probe assembly fixedly connected to the output end of the electric cylinder, a fixed clamping plate fixedly connected to the front side of the top of the workbench, a movable clamping plate provided on the rear side of the fixed clamping plate, a pushing member fixedly connected to both sides of the rear side of the movable clamping plate, a connecting plate fixedly connected to the bottom of the pushing member, and a pulling mechanism movably connected to both sides of the front side of the connecting plate.

[0006] Preferably, the pulling mechanism includes a first transmission plate, which is movably connected to both sides of the front side of the connecting plate. A second transmission plate is movably connected to the front side of the first transmission plate. A worm gear is fixedly connected to the bottom of the second transmission plate. A bidirectional worm is meshed on the front side of the worm gear. A motor is fixedly connected to the right side of the bidirectional worm. The top of the motor is fixedly connected to the bottom of the worktable.

[0007] Preferably, a stabilizing sleeve is fitted on the left side of the surface of the bidirectional worm gear, and the top of the stabilizing sleeve is fixedly connected to the bottom of the worktable.

[0008] Preferably, the surface of the pusher is provided with a weight-reducing groove, which is located at the top of the worktable.

[0009] Preferably, both sides of the front side of the pusher are fixedly connected to the reinforcing members, and the front side of the reinforcing members is fixedly connected to the rear side of the movable clamp.

[0010] Preferably, both sides of the movable clamp are fixedly connected to a sliding rod, and a sliding sleeve is fitted on the front side of the surface of the sliding rod, and the surface of the sliding sleeve is fixedly connected to the surface of the fixed clamp.

[0011] Preferably, a reinforcing rib is fixedly connected to the front side of the movable clamping plate, and the surface of the reinforcing rib is fixedly connected to the surface of the movable clamping plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by adding a support frame, an electric cylinder, and a lifting probe assembly to the workbench, can achieve accurate pressure detection of the pressure sensor. The driving method of the electric cylinder can ensure the stability and controllability of the applied pressure.

[0014] 2. This utility model can reliably clamp the pressure sensor by adding a fixed clamping plate and a movable clamping plate to the workbench. Combined with the pusher, connecting plate and pulling mechanism, the position of the movable clamping plate can be flexibly adjusted to meet the inspection requirements of pressure sensors of different specifications. The overall structure is compact and highly automated, effectively improving the efficiency and convenience of the inspection work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a perspective view of the pushing component of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a perspective view of the bidirectional worm gear of this utility model.

[0019] In the diagram: 1. Workbench; 2. Support frame; 3. Electric cylinder; 4. Lifting probe assembly; 5. Fixed clamping plate; 6. Movable clamping plate; 7. Pushing component; 8. Linking plate; 91. Transmission plate one; 92. Transmission plate two; 93. Worm gear; 94. Bidirectional worm gear; 95. Motor; 10. Stabilizing sleeve; 11. Weight reduction groove; 12. Reinforcing component; 13. Slide rod; 14. Slide sleeve; 15. Reinforcing rib. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4A pressure sensor inspection fixture includes a workbench 1. A support frame 2 is fixedly connected to the left side of the top of the workbench 1. Electric cylinders 3 are fixedly connected to both sides of the top of the support frame 2. The output end of the electric cylinder 3 extends through to the bottom of the support frame 2. A lifting probe assembly 4 is fixedly connected to the output end of the electric cylinder 3. A fixed clamping plate 5 is fixedly connected to the front side of the top of the workbench 1. A movable clamping plate 6 is provided on the rear side of the fixed clamping plate 5. Pushing members 7 are fixedly connected to both sides of the rear side of the movable clamping plate 6. A connecting plate 8 is fixedly connected to the bottom of the pushing member 7. Pulling mechanisms are movably connected to both sides of the front side of the connecting plate 8.

[0022] Please see Figure 1-4 The pulling mechanism includes a transmission plate 91, which is movably connected to both sides of the front side of the connecting plate 8. A transmission plate 92 is movably connected to the front side of the transmission plate 91. A worm gear 93 is fixedly connected to the bottom of the transmission plate 92. A double worm 94 is meshed on the front side of the worm gear 93. A motor 95 is fixedly connected to the right side of the double worm 94. The top of the motor 95 is fixedly connected to the bottom of the worktable 1.

[0023] Furthermore, through the arrangement of the worm gear 93, the bidirectional worm 94, and the motor 95, the rotational motion of the motor 95 can be smoothly converted into the linear motion of the connecting plate 8, thereby driving the movable clamping plate 6 to move precisely. The meshing transmission between the bidirectional worm 94 and the worm gear 93 has the characteristics of stable transmission ratio and good self-locking performance, which can ensure the stable position of the movable clamping plate 6 during the clamping process, avoid loosening, ensure the uniformity of the clamping force on the pressure sensor, and thus improve the accuracy of the test results.

[0024] Please see Figure 1-4 A stabilizing sleeve 10 is fitted on the left side of the surface of the bidirectional worm gear 94, and the top of the stabilizing sleeve 10 is fixedly connected to the bottom of the worktable 1.

[0025] Furthermore, the stabilizing sleeve 10 provides stable support for the left side of the bidirectional worm gear 94, effectively preventing the bidirectional worm gear 94 from swaying or shifting due to uneven force during rotation. This ensures the stability and reliability of the meshing transmission between the bidirectional worm gear 94 and the worm wheel 93, extends the service life of the transmission components, and indirectly guarantees the long-term stable operation of the inspection fixture.

[0026] Please see Figure 1-4 The surface of the pusher 7 is provided with a weight reduction groove 11, which is located on the top of the worktable 1.

[0027] Furthermore, by setting the weight reduction groove 11, the overall weight of the pusher 7 can be reduced while ensuring the structural strength of the pusher 7, thereby reducing the load on the pulling mechanism. This not only saves driving energy but also makes the movement of the movable clamping plate 6 more flexible and smooth, reducing unnecessary energy consumption and improving the operating efficiency of the tooling.

[0028] Please see Figure 1-4 Both sides of the front of the pusher 7 are fixedly connected to the reinforcing members 12, and the front of the reinforcing members 12 is fixedly connected to the rear of the movable clamp 6.

[0029] Furthermore, by setting the reinforcement 12, the firmness and stability of the connection between the pusher 7 and the movable clamp 6 can be enhanced, avoiding the situation where the connection between the two becomes loose or damaged due to excessive force during the process of pushing the movable clamp 6 to move. This ensures that the thrust can be efficiently and stably transmitted to the movable clamp 6, guaranteeing the reliability of the pressure sensor clamping.

[0030] Please see Figure 1-3 Both sides of the movable clamping plate 6 are fixedly connected to sliding rods 13, and sliding sleeves 14 are fitted on the front side of the surface of the sliding rods 13. The surface of the sliding sleeves 14 is fixedly connected to the surface of the fixed clamping plate 5.

[0031] Furthermore, the sliding rod 13 and sliding sleeve 14 guide the movement of the movable clamping plate 6, ensuring that the movable clamping plate 6 maintains a straight line during its forward and backward movement, avoiding deviation or tilting, and guaranteeing the parallelism between the movable clamping plate 6 and the fixed clamping plate 5. This ensures that the pressure sensor is subjected to uniform force during clamping, further improving the accuracy of the inspection.

[0032] Please see Figure 1-3 A reinforcing rib 15 is fixedly connected to the front side of the movable clamping plate 6, and the surface of the reinforcing rib 15 is fixedly connected to the surface of the movable clamping plate 6.

[0033] Furthermore, by setting the reinforcing ribs 15, the structural strength and rigidity of the movable clamping plate 6 can be enhanced, preventing the movable clamping plate 6 from deforming due to force when clamping the pressure sensor, ensuring the flatness and stability of the clamping surface, providing a stable clamping environment for the pressure sensor, and helping to improve the reliability of the test data.

[0034] The specific implementation process of this utility model is as follows: In use, the fixed clamping plate 5 and the movable clamping plate 6 are in the open state in the figure. When it is necessary to fix and test a batch of pressure sensors, the pressure sensors are now placed inside the fixed clamping plate 5.

[0035] Start motor 95, which drives bidirectional worm gear 94 to rotate, which in turn drives worm wheel 93 to rotate, which in turn drives transmission plate 2 92 to rotate, which in turn drives transmission plate 1 91 to rotate. During the rotation of transmission plate 1 91, it also drives connecting plate 8 to move forward. Connecting plate 8 drives pusher 7 and movable clamping plate 6 to move forward. When movable clamping plate 6 contacts the pressure sensor, the pressure sensor is fixed by the two. Start electric cylinder 3, which drives lifting probe group 4 to descend. After lifting probe group 4 contacts the pressure sensor, it generates detection data.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure sensor inspection fixture, comprising a worktable (1), characterized in that: A support frame (2) is fixedly connected to the left side of the top of the workbench (1). Electric cylinders (3) are fixedly connected to both sides of the top of the support frame (2). The output end of the electric cylinder (3) extends through to the bottom of the support frame (2). A lifting probe group (4) is fixedly connected to the output end of the electric cylinder (3). A fixed clamping plate (5) is fixedly connected to the front side of the top of the workbench (1). A movable clamping plate (6) is provided on the rear side of the fixed clamping plate (5). Pushing members (7) are fixedly connected to both sides of the rear side of the movable clamping plate (6). A connecting plate (8) is fixedly connected to the bottom of the pushing member (7). A pulling mechanism is movably connected to both sides of the front side of the connecting plate (8).

2. The pressure sensor inspection fixture according to claim 1, characterized in that: The pulling mechanism includes a transmission plate one (91), which is movably connected to both sides of the front side of the connecting plate (8). A transmission plate two (92) is movably connected to the front side of the transmission plate one (91). A worm gear (93) is fixedly connected to the bottom of the transmission plate two (92). A bidirectional worm (94) is meshed on the front side of the worm gear (93). A motor (95) is fixedly connected to the right side of the bidirectional worm (94). The top of the motor (95) is fixedly connected to the bottom of the worktable (1).

3. The pressure sensor inspection fixture according to claim 2, characterized in that: A stabilizing sleeve (10) is fitted on the left side of the surface of the bidirectional worm (94), and the top of the stabilizing sleeve (10) is fixedly connected to the bottom of the workbench (1).

4. The pressure sensor inspection fixture according to claim 1, characterized in that: The surface of the pusher (7) is provided with a weight reduction groove (11), which is located on the top of the workbench (1).

5. The pressure sensor inspection fixture according to claim 1, characterized in that: Both sides of the front of the pusher (7) are fixedly connected to the reinforcing members (12), and the front of the reinforcing members (12) is fixedly connected to the rear of the movable clamp (6).

6. The pressure sensor inspection fixture according to claim 1, characterized in that: Both sides of the movable clamp (6) are fixedly connected to slide rods (13), and a sliding sleeve (14) is fitted on the front side of the surface of the slide rod (13). The surface of the sliding sleeve (14) is fixedly connected to the surface of the fixed clamp (5).

7. The pressure sensor inspection fixture according to claim 1, characterized in that: The front side of the movable clamp (6) is fixedly connected with a reinforcing rib (15), and the surface of the reinforcing rib (15) is fixedly connected to the surface of the movable clamp (6).

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