CN113686372A

CN113686372A - Pressure testing device for sensor production

Info

Publication number: CN113686372A
Application number: CN202110896736.1A
Authority: CN
Inventors: 芦宇峰; 麻守孝; 郭丽娟; 覃剑; 王佳琳
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-11-23

Abstract

The invention discloses a pressure testing device for sensor production, which is characterized in that an electric push rod, a strip-shaped plate, a vertical plate, a rack, a first bevel gear, a second bevel gear, a rotary drum, a ratchet wheel, a bevel gear disc and a carrying disc which are mutually connected or meshed are arranged, when the electric push rod drives the pressing plate to be upward, the carrying disc is driven to rotate through a driving belt of the parts, so that a placing mechanism on the carrying disc rotates along with the carrying disc and is finally positioned under the pressing plate, a sensor to be tested can be placed on the placing mechanism when the last sensor performs pressure testing, namely, when the last sensor performs testing, the next sensor to be tested is already installed and fixed to wait for testing. Through the arrangement, continuous testing of the sensors can be realized, testing of one sensor and installation of another sensor can be simultaneously carried out fixedly, the fixed sensor to be tested can be quickly transferred to a testing position to be tested, and therefore testing efficiency can be greatly improved.

Description

Pressure testing device for sensor production

Technical Field

The invention relates to the technical field of component testing equipment, in particular to a pressure testing device for sensor production.

Background

The sensor is a detection device which can sense the information of the measured object and convert the sensed information into electric signals or other information in required forms according to a certain rule for output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like.

In the production process of sensor, need carry out the pressure test to its component part, but current pressure test device is when the continuous test to its a plurality of sensors, and the continuity of test is not good enough, has influenced the efficiency that detects, and complex operation when the sensor is fixed, need change anchor clamps when testing the sensor of different shapes, also caused very big influence to the efficiency and the convenience of test.

Disclosure of Invention

In order to overcome the defects, the invention provides a pressure testing device for sensor production, which aims to solve the problem of poor continuity of the existing testing device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pressure testing device for sensor production comprises a box body and a carrying disc arranged in the box body,

the object carrying disc is rotatably arranged at the bottom of the inner part of the box body, the periphery of the object carrying disc is fixedly provided with a bevel gear disc, the object carrying disc is provided with more than two placing mechanisms for placing the sensors to be tested, and the placing mechanisms are respectively positioned on a circumference which takes the rotating center of the object carrying disc as the center of a circle and are uniformly distributed; an electric push rod is arranged at the top inside the box body, a telescopic shaft of the electric push rod is vertically arranged downwards, a pressing plate is arranged at the bottom end of the electric push rod, and a pressure sensor is arranged between the bottom end of the telescopic shaft of the electric push rod and the pressing plate; a strip-shaped plate is further arranged at the bottom end of the telescopic shaft of the electric push rod, a vertical plate which is vertically arranged is fixedly arranged on the strip-shaped plate, and a rack is arranged on one side of the vertical plate;

the inner wall of the bottom of the box body is fixedly provided with a vertical plate, the vertical plate is rotatably provided with an upper rotating shaft and a lower rotating shaft, the upper rotating shaft is fixedly sleeved with a first helical gear, the lower rotating shaft is fixedly sleeved with a second helical gear, the first helical gear is meshed with the second helical gear, the second helical gear is meshed with a helical gear disc, and the upper rotating shaft is also fixedly sleeved with a ratchet wheel;

a rotating drum sleeved on the ratchet wheel is rotatably mounted on the inner wall of the box body, a pawl is mounted on the inner wall of the rotating drum, one end of the pawl is rotatably mounted on the inner wall of the rotating drum, the other end of the pawl is lapped between the teeth of the ratchet wheel, a return spring is arranged on the pawl, and the other end, far away from the pawl, of the return spring is fixedly connected with the inner wall of the rotating drum;

the periphery of the rotary drum is provided with an outer gear disc which is meshed with the rack, so that when the electric push rod drives the vertical plate and the rack on the vertical plate to move upwards, the rack drives the rotary drum to rotate, the ratchet wheel, the first helical gear, the second helical gear and the helical gear disc correspondingly rotate, and finally the object carrying disc is driven to rotate, so that another placing mechanism on the object carrying disc rotates and is finally located under the pressing plate.

Further, the laying mechanism is including solid fixed ring, gu fixed ring fixed mounting is on the top surface of year thing dish, gu horizontal installation has the guide bar on fixed ring's the inner wall, slidable mounting has two movable plates on the guide bar, and the bottom of movable plate and year thing dish sliding connection, the top fixed mounting of movable plate has the grip slipper, gu rotate on fixed ring's the inner wall and install the dwang, the dwang is located between two movable plates and fixed cover is equipped with the link gear, and the equal fixed mounting in one side that two movable plates are close to each other has bar pinion rack, and two bar pinion racks all mesh with the link gear mutually, bar pinion rack passes opposite movable plate, and one of them bar pinion rack extends and is provided with the pull rod, the pull rod passes solid fixed ring's lateral wall.

Furthermore, one end of the pull rod, which is far away from the strip-shaped toothed plate, is fixedly provided with a pull ring.

Furthermore, the top of the movable plate is rotatably provided with a rotating pin, the clamping seat is fixedly arranged at one end, far away from the movable plate, of the rotating pin, the two sides of the clamping seat are respectively provided with an arc-shaped groove and a flat groove, and anti-skid rubber pads are fixedly adhered to the inner walls of the arc-shaped groove and the flat groove.

Furthermore, the rotating pins are fixedly sleeved with adjusting gears, and the adjusting gears on the two rotating pins in the same fixed ring are matched.

Furthermore, the side surfaces of the object carrying disc opposite to the box body are provided with circular rolling grooves, the circle centers of the circular rolling grooves coincide with the rotation circle centers of the object carrying disc, and a plurality of balls are arranged in the rolling grooves in a rolling mode.

Further, fixed mounting has the supporting seat that is used for supporting the sensor that awaits measuring on solid fixed ring's the top lateral wall, offers the slotted hole that is used for penetrating for adjusting gear on the supporting seat.

Further, two pushing springs are sleeved on the guide rod and are respectively located on the outer sides of the two movable plates, one end of each pushing spring is abutted to one movable plate, and the other end of each pushing spring is abutted to the inner wall of the corresponding fixing ring.

Further, a box door is arranged on the front side of the box body, a display is mounted on the box body, and the display is connected with the pressure sensor and used for displaying the test value of the pressure sensor.

Furthermore, the box door is made of transparent materials, and the display is located at the top of the interior of the box body.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a pressure testing device for sensor production, which is characterized in that an electric push rod, a strip-shaped plate, a vertical plate, a rack, a first bevel gear, a second bevel gear, a rotary drum, a ratchet wheel, a bevel gear disc and a carrying disc which are mutually connected or meshed are arranged, when the electric push rod drives a pressing plate to be upward, the carrying disc is driven to rotate through a driving belt of the parts, so that a placing mechanism on the carrying disc rotates along with the electric push rod and is finally positioned under the pressing plate, a sensor to be tested can be placed on the placing mechanism when the last sensor performs pressure testing, namely, when the last sensor performs testing, the next sensor to be tested is already installed and fixed and waits for testing, thereby through the arrangement, the continuous testing of the sensors can be realized, the testing of one sensor and the installation and the fixation of the other sensor can be simultaneously performed, and the fixed sensor to be tested can be quickly transferred to a testing position for testing, so that the testing efficiency can be greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic perspective view of a pressure testing apparatus for sensor production according to the present invention;

FIG. 2 is a schematic cross-sectional view of a pressure testing device for sensor production according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partially enlarged view of fig. 2 at B.

In the figure, the labels shown in the figure are: 1. a box body; 2. a fixing pin; 3. a carrying tray; 4. a ball bearing; 5. a bevel gear plate; 6. a vertical plate; 7. a rack; 8. a fixing ring; 9. a guide bar; 10. moving the plate; 11. a rotation pin; 12. a clamping seat; 121. an arc-shaped slot; 122. flattening the groove; 13. an adjusting gear; 14. rotating the rod; 15. a linkage gear; 16. a strip toothed plate; 17. a pull rod; 18. a supporting seat; 19. a pushing spring; 20. an electric push rod; 21. pressing a plate; 22. a pressure sensor; 23. a display; 24. a strip plate; 25. a vertical plate; 26. an upper rotating shaft; 27. a lower rotating shaft; 28. a ratchet wheel; 29. a first bevel gear; 30. a second bevel gear; 31. a rotating drum; 32. a pawl; 33. a box door; 34. a slotted hole; 35. an outer gear plate; 36. a return spring; 37. and (4) a pull ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a pressure testing apparatus for sensor production, which mainly includes a box 1, a carrying tray 3 disposed in the box 1, a plurality of placing mechanisms disposed on the carrying tray 3 for placing a sensor to be tested, and a display 23 disposed in the box 1.

The box 1 is square box frame structure, has hollow inside, and the front side of the box 1 of box 1 is provided with chamber door 33, can be convenient for get when opening chamber door 33 and put the sensor that awaits measuring, control internals etc. close chamber door 33 and can make the box 1 inside form a relative inclosed space temporarily to realize the safety test. The door 33 is preferably made of a transparent material so as to facilitate the tester to observe the inside of the box 1.

Carry thing dish 3 and be circular disc structure, carry thing dish 3 and rotate and install in the bottom of the inside of box 1, specifically rotate for the bottom of the inside of box 1 and install a fixed pin 2, carry the centre of a circle of the bottom of thing dish 3 and fixed pin 2's top fixed connection to make and carry thing dish 3 can realize rotating. The side surfaces of the object carrying disc 3 opposite to the box body 1 are provided with circular rolling grooves, the circle centers of the circular rolling grooves coincide with the rotation circle center of the object carrying disc 3, and a plurality of balls 4 are arranged in the rolling grooves in a rolling manner. The carrier plate 3 can be stably supported by the rolling grooves and the balls 4, so that the carrier plate can be stably rotated. A bevel gear plate 5 is fixedly arranged on the periphery of the object carrying plate 3.

The placing mechanisms for placing the sensors to be measured are arranged on the object carrying disc 3, the number of the placing mechanisms is more than two, the number of the placing mechanisms can be selected according to specific conditions, the number of the placing mechanisms in the preferred embodiment is four, and the four placing mechanisms are respectively positioned on a circumference which takes the rotating center of the object carrying disc 3 as the circle center and are uniformly distributed. In practice, the sensor to be measured is placed on and fixed by a placement mechanism.

The top of the inside of box 1 is equipped with electric putter 20, and electric putter 20's telescopic shaft erects and sets up downwards and bottom department is provided with clamp plate 21, and is provided with pressure sensor 22 between the bottom of electric putter 20's telescopic shaft and clamp plate 21, and electric putter 20 promotes clamp plate 21 downwards and supports the sensor that awaits measuring during the test, and clamp plate 21 gives the certain pressure of sensor that awaits measuring, and pressure sensor 22 detects corresponding pressure this moment, also realizes the pressure test of sensor promptly.

The bottom department of electric putter 20's telescopic shaft still is provided with a bar plate 24 of horizontal setting, and bar plate 23 is kept away from on electric putter 20's the tip fixed riser 6 that is provided with a setting of erectting, and one side of riser 6 is provided with rack 7 to can drive bar plate 24 and reciprocate when telescopic shaft of electric putter 20 is flexible removal from top to bottom, thereby drive riser 6 and rack 7 on it reciprocates.

The bottom inner wall of the box body 1 is fixedly provided with a vertical plate 25, the vertical plate 25 is rotatably provided with an upper rotating shaft 26 and a lower rotating shaft 27 which are transversely arranged, the upper rotating shaft 26 is positioned right above the lower rotating shaft 27, the upper rotating shaft 26 is fixedly sleeved with a first helical gear 29, the lower rotating shaft 27 is fixedly sleeved with a second helical gear 30, the first helical gear 29 is meshed with the second helical gear 30, the first helical gear 29 rotates to drive the second helical gear 30 to rotate, the second helical gear 30 is meshed with the helical gear disc 5, and the second helical gear 30 rotates to drive the helical gear disc 5 to rotate. The upper rotating shaft 26 is also fixedly sleeved with a ratchet 28, and the ratchet 28 and the bevel gear I29 rotate together.

The inner wall of the box body 1 is rotatably provided with a rotating drum 31 sleeved on the ratchet wheel 28, the inner wall of the rotating drum 31 is provided with a pawl 32, one end of the pawl 32 is rotatably arranged on the inner wall of the rotating drum 31, the other end of the pawl 32 is lapped between the teeth of the ratchet wheel 28, the pawl 32 is provided with a return spring 36, one end of the return spring 36 is fixedly connected with the pawl 32, the other end of the return spring 36, which is far away from the pawl 32, is fixedly connected with the inner wall of the rotating drum 31, and the pawl 32 can be lapped on the ratchet wheel 28 through the return spring 36.

An outer gear disc 35 is arranged on the periphery of the rotary drum 31, the outer gear disc 35 is meshed with the rack 7, so that when the electric push rod 20 drives the vertical plate 6 and the rack 7 thereon to move upwards, the rack 7 drives the rotary drum 31 to rotate, so that the ratchet wheel 28, the first bevel gear 29, the second bevel gear 30 and the bevel gear disc 5 correspondingly rotate, and finally the object carrying disc 3 is driven to rotate, so that another placing mechanism on the object carrying disc 3 rotates and is finally located right below the pressing plate 21.

When the pressure testing device is implemented, a sensor to be tested is placed on the placing mechanism and is fixed by the placing mechanism, the object carrying disc 3 is rotated to enable the sensor to be tested to be located under the pressure plate 21, then the electric push rod 20 is started to push the pressure plate 21 to downwards press the sensor to be tested, and the pressure transmitter 22 detects corresponding pressure at the moment, namely the pressure testing of the sensor is realized; after the pressure test is completed, the pressing plate 21 is pushed upwards to drive the pressing plate 21 to release the extrusion on the sensor to be tested, and simultaneously the strip-shaped plate 24 is driven to move upwards, so as to drive the vertical plate 6 and the rack 7 thereon to move upwards, the rack 7 drives the rotary drum 31 upwards to rotate clockwise, under the action of the pawl 32, the ratchet 28 rotates to drive the upper rotary shaft 26 and the first bevel gear 29 to rotate, at the moment, the second bevel gear 30 rotates together and drives the bevel gear disc 5 to rotate, so as to drive the whole object carrying disc 3 to rotate, the rotating angle of the object carrying disc 3 is increased along with the continuous upward movement of the electric push rod 20, the device stops after the electric push rod 20 moves upwards by a certain range, at the moment, another placing mechanism on the object carrying disc 3 rotates along with the placing mechanism facing the pressing plate 21 and finally is positioned under the pressing plate 21, and a sensor to be tested is already placed when the last sensor performs the pressure test, that is, when the previous sensor is tested, the next sensor to be tested is installed and fixed, and waits for testing, and the sensor after testing can be taken down; then the electric push rod 20 drives the pressing plate 21 to move downwards and carries out pressure test on the sensor; it should be noted that, when the electric push rod 20 is driven downwards, although the strip-shaped plate 24 moves downwards and drives the vertical plate 6 and the rack 7 thereon to move downwards, so as to drive the rotary drum 31 to rotate (opposite to when the rack 7 is driven upwards), due to the characteristics of the ratchet wheel, the ratchet wheel 28 does not rotate together, that is, the first gear 29, the second bevel gear 30, the bevel gear disc 5 and the carrying disc 3 do not rotate along with the rotation of the rotary drum, but remain stationary, that is, when the electric push rod 20 drives the press plate 21 downwards, the carrying disc 3 does not rotate, so that the mounting mechanism on which the sensor to be tested is mounted is maintained right below the press plate 21, so as to ensure that the pressure test of the sensor is realized; after the test is completed, the electric push rod 20 is upward and can drive the next placing mechanism with the sensor to be tested to rotate right below the pressing plate 21, so that the pressing plate 21 is downward for testing. By the aid of the mode, continuous testing of the sensors can be realized, testing of one sensor and installation and fixation of the other sensor can be simultaneously performed, the fixed sensor to be tested can be quickly transferred to a testing position to be tested, and accordingly testing efficiency can be greatly improved.

The box body 1 is provided with a display 23, the display 23 is connected with the pressure sensor 22 and used for displaying the test value of the pressure sensor 22, and the display 23 is positioned on the top inside the box body 1. Through setting up display 23, can show test data in real time to the testing personnel know the test situation in real time.

In a preferred embodiment, the placing mechanism comprises a fixing ring 8, the fixing ring 8 is a structure with upper and lower ends open, the fixing ring 8 is fixedly installed on the top surface of the object carrying disc 3, a guide rod 9 is horizontally installed on the inner wall of the fixing ring 8, two movable plates 10 are slidably installed on the guide rod 9, the bottoms of the movable plates 10 are slidably connected with the object carrying disc 3, namely, the two movable plates 10 can move close to or away from each other along the guide rod 9, a clamping seat 12 is fixedly installed on the top of the movable plate 10, the two clamping seats 12 are used for clamping a sensor to be detected, a rotating rod 14 is rotatably installed on the inner wall of the fixing ring 8, the rotating rod 14 is located between the two movable plates 10 and fixedly sleeved with a linkage gear 15, a strip-shaped toothed plate 16 is fixedly installed on one side of the two movable plates 10 close to each other, and the two strip-shaped toothed plates 16 are both meshed with the linkage gear 15, the strip-shaped toothed plates 16 penetrate through the opposite moving plate 10, and a pull rod 17 extends from one strip-shaped toothed plate 16, and the pull rod 17 penetrates through the side wall of the fixed ring 8. During implementation, in the same placing mechanism, the pull rod 17 is pushed inwards, the bar-shaped toothed plates 16 connected with the pull rod 17 move to drive one moving plate 10 to move and drive the linkage gear 15 to rotate, the other bar-shaped toothed plates 16 are driven in the rotation of the linkage gear 15, the moving plates 10 fixedly connected with the bar-shaped toothed plates 16 move together at the moment, namely, the two moving plates 10 move away from each other, the clamping seats 12 of the moving plates 10 also move away from each other, the sensor to be measured can be placed between the two clamping seats 12 at the moment, then the pull rod 17 is pulled outwards, the two moving plates 10 move close to each other, so that the clamping seats 12 of the moving plates 10 also move close to each other, the sensor to be measured can be clamped, and quick and stable clamping of the sensor is realized. One end fixed mounting that bar pinion rack 16 was kept away from to pull rod 17 has pull ring 37, through setting up pull ring 37, can be convenient for the tester through pull ring 37 pulling pull rod 17. Furthermore, two pushing springs 19 are sleeved on the guide rod 9 and are respectively located on the outer sides of the two moving plates 10, one end of each pushing spring 19 abuts against the moving plate 10, and the other end of each pushing spring abuts against the inner wall of the corresponding fixed ring 8, so that the moving plates 10 can have a tendency of approaching each other to clamp the sensor by arranging the pushing springs 19. Specifically, when the pull rod 17 is loosened, the two moving plates 10 are driven to move in opposite directions under the action of the pushing spring 19, the two moving plates 10 move close to each other so that the clamping seats 12 are close to each other to clamp the sensor to be detected, and clamping of the sensor is automatically achieved by arranging the pushing spring 19.

The top of the moving plate 10 is rotatably provided with a rotating pin 11, the holder 12 is fixedly installed at one end of the rotating pin 11 far away from the moving plate 10, that is, the holder 12 can rotate relative to the moving plate 10, the arc-shaped groove 121 and the flat groove 122 are respectively formed in two sides of the holder 12, the side wall of the arc-shaped groove 121 is an arc-shaped surface, the side wall of the flat groove 122 is a plane, the arc-shaped groove 121 and the flat groove 122 are oppositely arranged on two sides of one holder 12, and anti-skid rubber pads are fixedly adhered to inner walls of the arc-shaped groove 121 and the flat groove 122. When the arc-shaped grooves 121 are used for clamping, the clamping seat 12 is rotated to enable the two arc-shaped grooves 121 to be opposite; when the flat groove 122 is used for clamping, the holder 12 is rotated so that the two flat grooves 122 are opposed to each other. The sensor is located between the arc-shaped slots 121 or the flat slots 122, and the arc-shaped slots 121 and the flat slots 122 have a supporting function on the sensor. Through setting up arc wall 121 and flat slot 122, can carry out the centre gripping to the sensor of different shapes, and all fixed paste has the antiskid rubber pad on the inner wall of arc wall 121 and flat slot 122, can play certain antiskid effect, can realize the more firm centre gripping of sensor.

The adjusting gears 13 are fixedly sleeved on the rotating pins 11, the adjusting gears 13 on the two rotating pins 11 in the same fixing ring 8 are matched, when the two moving plates 10 are close to each other, the adjusting gears 13 on the two rotating pins 11 are contacted and meshed with each other, so that the two adjusting gears 13 can be adjusted together by adjusting one adjusting gear 13, the two rotating pins 11 and the clamping seats 12 on the two rotating pins 11 can be adjusted simultaneously to realize the simultaneous rotation of the two clamping seats 12, and the rapid switching of using the arc-shaped grooves 121 or the flat grooves 122 is convenient to realize, if the two clamping seats 12 are two arc-shaped grooves 121 which are opposite to each other, the two clamping seats 12 can be rotated together by rotating one adjusting gear 13, and the two flat grooves 122 of the clamping seats 12 can be rotated to opposite positions at the same time, and the mode is simple, convenient and rapid. The top side wall of the fixing ring 8 is fixedly provided with a supporting seat 18 for supporting a sensor to be measured, and the supporting seat 18 is provided with a slotted hole 34 for the penetration of the adjusting gear 13. The supporting seat 18 can stably support the pressure sensor to be tested, and the slotted hole 34 can allow the adjusting gear 13 to penetrate, so that the interaction of the adjusting gear 13 is not influenced.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a pressure test device is used in sensor production, including box (1) and the year thing dish (3) of setting in box (1), its characterized in that:

the object carrying disc (3) is rotatably arranged at the bottom of the inner part of the box body (1), the periphery of the object carrying disc (3) is fixedly provided with a bevel gear disc (5), the object carrying disc (3) is provided with more than two placing mechanisms for placing sensors to be tested, and the placing mechanisms are respectively positioned on a circumference which takes the rotating center of the object carrying disc (3) as the center of a circle and are uniformly distributed; an electric push rod (20) is arranged at the top inside the box body (1), a telescopic shaft of the electric push rod (20) is vertically arranged downwards, a pressing plate (21) is arranged at the bottom end of the electric push rod (20), and a pressure sensor (22) is arranged between the bottom end of the telescopic shaft of the electric push rod (20) and the pressing plate (21); a strip-shaped plate (24) is further arranged at the bottom end of the telescopic shaft of the electric push rod (20), a vertical plate (6) which is vertically arranged is fixedly arranged on the strip-shaped plate (24), and a rack (7) is arranged on one side of the vertical plate (6);

a vertical plate (25) is fixedly installed on the inner wall of the bottom of the box body (1), an upper rotating shaft (26) and a lower rotating shaft (27) are rotatably installed on the vertical plate (25), a first helical gear (29) is fixedly sleeved on the upper rotating shaft (26), a second helical gear (30) is fixedly sleeved on the lower rotating shaft (27), the first helical gear (29) is meshed with the second helical gear (30), the second helical gear (30) is meshed with the helical gear disc (5), and a ratchet wheel (28) is also fixedly sleeved on the upper rotating shaft (26);

a rotating drum (31) sleeved on the ratchet wheel (28) is rotatably mounted on the inner wall of the box body (1), a pawl (32) is mounted on the inner wall of the rotating drum (31), one end of the pawl (32) is rotatably mounted on the inner wall of the rotating drum (31), the other end of the pawl (32) is lapped between teeth of the ratchet wheel (28), a return spring (36) is arranged on the pawl (32), and the other end, far away from the pawl (32), of the return spring (36) is fixedly connected with the inner wall of the rotating drum (31);

the outer gear disc (35) is arranged on the periphery of the rotary drum (31), the outer gear disc (35) is meshed with the rack (7), so that when the electric push rod (20) drives the vertical plate (6) and the rack (7) on the vertical plate to move upwards, the rack (7) drives the rotary drum (31) to rotate, the ratchet wheel (28), the first helical gear (29), the second helical gear (30) and the helical gear disc (5) correspondingly rotate, and finally the object carrying disc (3) is driven to rotate, so that another placing mechanism on the object carrying disc (3) rotates and is finally located right below the pressing plate (21).

2. The pressure test device for sensor production according to claim 1, wherein:

the placing mechanism comprises a fixing ring (8), the fixing ring (8) is fixedly installed on the top surface of the object carrying disc (3), a guide rod (9) is horizontally installed on the inner wall of the fixing ring (8), two movable plates (10) are installed on the guide rod (9) in a sliding mode, the bottom of each movable plate (10) is connected with the object carrying disc (3) in a sliding mode, a clamping seat (12) is fixedly installed at the top of each movable plate (10), a rotating rod (14) is installed on the inner wall of the fixing ring (8) in a rotating mode, the rotating rod (14) is located between the two movable plates (10) and is fixedly sleeved with a linkage gear (15), a strip-shaped toothed plate (16) is fixedly installed on one side, close to each other, of the two movable plates (10), the two strip-shaped toothed plates (16) are meshed with the linkage gear (15), and the strip-shaped toothed plate (16) penetrates through the opposite movable plates (10), one of the strip-shaped toothed plates (16) is provided with a pull rod (17) in an extending manner, and the pull rod (17) penetrates through the side wall of the fixing ring (8).

3. The pressure test device for sensor production according to claim 2, wherein:

and a pull ring (37) is fixedly installed at one end, far away from the strip toothed plate (16), of the pull rod (17).

4. The pressure test device for sensor production according to claim 2, wherein:

the top of movable plate (10) rotates installs rotating pin (11), holder (12) fixed mounting is served at rotating pin (11) one of keeping away from movable plate (10), arc wall (121) and flat slot (122) have been seted up respectively to the both sides of holder (12), and all fixed the pasting have the anti-skidding rubber pad on the inner wall of arc wall (121) and flat slot (122).

5. The pressure test device for sensor production according to claim 4, wherein:

the rotating pins (11) are fixedly sleeved with adjusting gears (13), and the adjusting gears (13) on the two rotating pins (11) in the same fixing ring (8) are matched.

6. The pressure test device for sensor production according to claim 1, wherein:

the side surfaces of the object carrying disc (3) and the box body (1) in opposite directions are provided with circular rolling grooves, the circle centers of the circular rolling grooves coincide with the rotating circle center of the object carrying disc (3), and a plurality of balls (4) are installed in the rolling grooves in a rolling mode.

7. The pressure test device for sensor production according to claim 5, wherein:

fixed mounting has supporting seat (18) that are used for supporting the sensor that awaits measuring on the top lateral wall of solid fixed ring (8), offers slotted hole (34) that are used for penetrating for adjusting gear (13) on supporting seat (18).

8. The pressure test device for sensor production according to claim 2, wherein:

the guide rod (9) is sleeved with two pushing springs (19), the two pushing springs (19) are respectively located on the outer sides of the two movable plates (10), one end of each pushing spring (19) is abutted to the corresponding movable plate (10), and the other end of each pushing spring is abutted to the inner wall of the corresponding fixed ring (8).

9. The pressure test device for sensor production according to claim 1, wherein:

the front side of the box body (1) is provided with a box door (33), a display (23) is installed on the box body (1), and the display (23) is connected with the pressure sensor (22) and used for displaying the test value of the pressure sensor (22).

10. The pressure test device for sensor production according to claim 9, wherein:

the box door (33) is made of transparent materials, and the display (23) is located on the top of the interior of the box body (1).