Pressure sensor performance testing device

Abstract

The utility model is suitable for the technical field of pressure sensor testing, and provides a pressure sensor performance testing device which comprises a bottom plate, a supporting frame is fixedly connected to the bottom plate, an air cylinder is fixedly connected to the supporting frame, a pressing plate is fixedly connected to the driving end of the air cylinder, a containing barrel is fixedly connected to the bottom plate, and a pressing plate is fixedly connected to the pressing plate. A containing plate is slidably connected into the containing cylinder, a spring is fixedly arranged between the containing plate and the inner bottom end of the containing cylinder, a plurality of evenly-distributed containing grooves are formed in the containing plate, pressure sensors are placed in the containing grooves, and the pressure sensors are externally connected with a display device used for displaying pressure values. A damper is fixedly connected between the containing plate and the inner bottom end of the containing cylinder, a mark is fixedly arranged on the containing plate, and a qualified pressure sensor is placed in the containing groove close to the mark. The utility model has the advantage that the sensor can be efficiently detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure sensor test technical field especially relates to a pressure sensor performance testing device. BACKGROUND

[0002] Pressure sensor as a kind of can accurately perceive pressure signal and convert it into the device that can output electric signal, usually by pressure sensitive element and signal processing unit, according to the difference of test pressure type can be divided into three kinds of gauge pressure sensor, differential pressure sensor and absolute pressure sensor.In the production process of pressure sensor, performance test is the key link to ensure product quality.

[0003] However, the performance testing device for the existing pressure sensor production when using, mostly single only can detect single sensor, leading to low test efficiency.

[0004] Therefore, in view of the above status, it is urgent to develop a kind of pressure sensor performance testing device to overcome the deficiency in current practical application. UTILITY MODEL CONTENT

[0005] The utility model embodiment is to provide a kind of pressure sensor performance testing device, to solve the problem proposed in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of pressure sensor performance testing device, including bottom plate, the bottom plate is fixedly connected with support frame, the support frame is fixedly connected with cylinder, the drive end of the cylinder is fixedly connected with pressing plate, the bottom plate is fixedly connected with placing cylinder, the accommodating plate is slidably connected in the placing cylinder, and the spring is fixedly arranged between the accommodating plate and the bottom end in placing cylinder, a plurality of evenly distributed accommodating grooves are opened in the accommodating plate, the pressure sensor is placed in the accommodating groove, and the pressure sensor is all external for the display device for showing pressure value.

[0008] Further technical solutions, the inner wall of the placing cylinder is provided with a plurality of circumferentially evenly distributed limit grooves, a plurality of circumferentially evenly distributed first limit blocks are fixedly connected to the outer wall of the accommodating plate, and the first limit block and the limit groove are one-to-one correspondence, and the first limit block is slidably connected with the inner wall of corresponding limit groove.

[0009] Further technical solutions, the outer wall of the pressing plate is fixedly connected with a plurality of circumferentially evenly distributed second limit blocks, and a plurality of the limit groove is one-to-one correspondence, when pressing plate is pressed to accommodate plate, the second limit block is slidably connected with the inner wall of corresponding limit groove.

[0010] Further technical solutions, multiple first limiting blocks and the accommodating plate are an integral structure, multiple second limiting blocks and the accommodating plate are an integral structure.

[0011] Further technical solutions, the accommodating plate and the bottom end of the placing cylinder are fixedly connected with a damper.

[0012] Further technical solutions, the accommodating plate is fixedly provided with a mark, and a qualified pressure sensor is placed in a accommodating groove close to the mark.

[0013] In summary, the embodiments of the present application have the following beneficial effects compared with the prior art:

[0014] 1, through the multiple accommodating grooves on the accommodating plate, multiple pressure sensors can be placed at one time, then the accommodating grooves drive the pressing plate to descend and extrude the pressure sensors, each pressure sensor compares the data on the display device with the corresponding data of the qualified pressure sensor, if within the allowable error range, it is qualified, thereby the sensor can be efficiently detected;

[0015] 2, the first limiting block limits the accommodating plate to move only in the vertical direction, the second limiting block limits the pressing plate to move only in the vertical direction, thereby ensuring that each pressure sensor is subjected to the same force, effectively ensuring the detection accuracy.

[0016] In order to more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0018] Fig. 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present application;

[0019] Fig. 3 It is a schematic diagram of the three-dimensional structure of part of the structure of the present application.

[0020] In the figure: 1, bottom plate; 2, support frame; 3, air cylinder; 4, pressing plate; 5, placing cylinder; 6, accommodating plate; 7, accommodating groove; 8, pressure sensor; 9, spring; 10, damper; 11, limiting groove; 12, first limiting block; 13, second limiting block; 14, mark. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] like Figs. 1-3 As shown, this utility model embodiment provides a pressure sensor performance testing device, including a base plate 1, a support frame 2 fixedly connected to the base plate 1, a cylinder 3 fixedly connected to the support frame 2, a pressure plate 4 fixedly connected to the driving end of the cylinder 3, a placement cylinder 5 fixedly connected to the base plate 1, a receiving plate 6 slidably connected inside the placement cylinder 5, and a spring 9 fixedly disposed between the receiving plate 6 and the bottom end of the placement cylinder 5. The receiving plate 6 has a plurality of evenly distributed receiving grooves 7, each containing a pressure sensor 8, and each pressure sensor 8 is externally connected to a display device for displaying pressure values.

[0024] Furthermore, the inner wall of the placement cylinder 5 is provided with a plurality of circumferentially evenly distributed limiting grooves 11, and the outer wall of the accommodating plate 6 is fixedly connected with a plurality of circumferentially evenly distributed first limiting blocks 12, and the first limiting blocks 12 correspond one-to-one with the limiting grooves 11. The first limiting blocks 12 are slidably connected to the inner wall of the corresponding limiting grooves 11, thereby restricting the accommodating plate 6 to move only in the vertical direction.

[0025] Furthermore, the outer wall of the pressure plate 4 is fixedly connected with a plurality of circumferentially evenly distributed second limiting blocks 13, and the plurality of them correspond one-to-one with the limiting grooves 11. When the pressure plate 4 presses against the receiving plate 6, the second limiting block 13 slides in connection with the inner wall of the corresponding limiting groove 11, thereby restricting the pressure plate 4 to move only in the vertical direction, thus ensuring that each pressure sensor 8 is subjected to the same force, effectively ensuring the detection accuracy.

[0026] Furthermore, the plurality of first limiting blocks 12 and receiving plates 6 are integral structures, and the plurality of second limiting blocks 13 and receiving plates 6 are integral structures.

[0027] Furthermore, guide rods (not shown in the figure) are fixedly connected to the pressure plate 4 and are symmetrically distributed about the axis of the pressure plate 4. The upper end of the guide rods passes through the top plate of the support frame 2, thereby effectively ensuring that the cylinder 3 can drive the pressure plate 4 to move only in the vertical direction, thereby ensuring that the second limiting block 13 can enter the limiting groove 11.

[0028] Furthermore, a damper 10 is fixedly connected between the accommodating plate 6 and the bottom of the placement cylinder 5. The damper 10 facilitates the slow lifting and lowering of the accommodating plate 6, thereby making the lifting and lowering process more stable.

[0029] Furthermore, a mark 14 is fixedly provided on the receiving plate 6, and a qualified pressure sensor 8 is placed in a receiving groove 7 near the mark 14.

[0030] In the embodiment of the utility model, through the multiple accommodating grooves 7 on the accommodating plate 6, multiple pressure sensors 8 can be placed at one time, then the accommodating grooves 7 drive the pressing plate 4 to descend and extrude the pressure sensor 8, each pressure sensor 8 compares the data on the display device with the data corresponding to the qualified pressure sensor 8, if within the error allowable range, then qualified, thereby can efficiently detect the sensor, through the first limiting block 12, the accommodating plate 6 can only move along the vertical direction, through the second limiting block 13, the pressing plate 4 can only move along the vertical direction, thereby ensure that each pressure sensor 8 bears the same force, effectively guarantee the detection accuracy.

[0031] The working principle of the utility model is: the qualified pressure sensor 8 is placed in the accommodating groove 7 close to the mark 14, the rest of the accommodating grooves 7 all place the pressure sensor 8 to be detected, then control the cylinder 3 to drive the pressing plate 4 to descend, the pressing plate 4 extrudes the pressure sensor 8, each pressure sensor 8 compares the data on the display device with the data corresponding to the qualified pressure sensor 8, if within the error allowable range, then qualified, the pressure sensor 8 extrudes the accommodating plate 6 downwards, the accommodating plate 6 compresses the spring 9, after the detection is completed, control the cylinder 3 to reset, then the spring 9 drives the accommodating plate 6 to reset, in this process, the first limiting block 12 always slides along the inner wall of the limiting groove 11.

[0032] The above only is the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement etc. within the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A pressure sensor performance testing device comprising a base plate (1), characterized in that, The bottom plate (1) is fixedly connected with a support frame (2), the support frame (2) is fixedly connected with a cylinder (3), the driving end of the cylinder (3) is fixedly connected with a pressing plate (4), the bottom plate (1) is fixedly connected with a placing cylinder (5), the placing cylinder (5) is slidably connected with a containing plate (6), and the containing plate (6) and the inner bottom end of the placing cylinder (5) are fixedly provided with springs (9), a plurality of containing grooves (7) are evenly arranged on the containing plate (6), and a pressure sensor (8) is arranged in each containing groove (7), and the pressure sensor (8) is externally connected with a display device for displaying pressure value.

2. The pressure sensor performance test device of claim 1, wherein, A plurality of limiting grooves (11) are evenly arranged on the inner wall of the placing cylinder (5), a plurality of first limiting blocks (12) are fixedly connected to the outer wall of the containing plate (6), and the first limiting blocks (12) and the limiting grooves (11) are one-to-one corresponding, and the first limiting blocks (12) are slidably connected with the inner wall of the corresponding limiting grooves (11).

3. The pressure sensor performance test device of claim 2, wherein, A plurality of second limiting blocks (13) are fixedly connected to the outer wall of the pressing plate (4), and the second limiting blocks (13) and the limiting grooves (11) are one-to-one corresponding, when the pressing plate (4) is pressed against the containing plate (6), the second limiting blocks (13) are slidably connected with the inner wall of the corresponding limiting grooves (11).

4. The pressure sensor performance test device of claim 3, wherein, The first limiting blocks (12) and the containing plate (6) are an integral structure, and the second limiting blocks (13) and the containing plate (6) are an integral structure.

5. The pressure sensor performance test device of claim 1, wherein, The containing plate (6) and the inner bottom end of the placing cylinder (5) are fixedly connected with a damper (10).

6. The pressure sensor performance test device of claim 1, wherein, The containing plate (6) is fixedly provided with a mark (14), and a qualified pressure sensor (8) is arranged in a containing groove (7) close to the mark (14).

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