Multifunctional pressure detection device

Abstract

The invention discloses a multifunctional pressure detection device, and relates to the technical field of material testing and experiment equipment, the multifunctional pressure detection device comprises a material box, the upper side of the material box is provided with a pressure box assembly, the pressure box assembly comprises a pressure box body, the inner side of the pressure box body is provided with an air bag, the lower part of the air bag is fixedly provided with a pressure plate, and the pressure plate is slidably connected with the interior of the pressure box body. A pressure sensor is fixedly arranged on the lower side of the pressure plate, an air inlet and an air outlet are formed in the air bag and extend to the outer side of the pressure box body through the pressure box body, a fixing plate is fixedly arranged on the side portion of the pressure box body, and a bottom plate is fixedly arranged at the bottom of the fixing plate. The pressure test can be accurately carried out on an object in the material box, so that the pressure resistance of the object is accurately measured. The air bag exerts pressure, so that the object is stressed more uniformly, measured parameters are more accurate, meanwhile, parts are not prone to being damaged, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of material testing and experimental equipment, and particularly to a multifunctional pressure detection device. Background Art

[0002] In the existing technical field, testing the pressure resistance and collision resistance of objects is an important part of product quality control. Traditional pressure resistance testing methods often apply pressure directly, however, this method easily causes uneven stress on the object, affecting the accuracy of measurement results. At the same time, traditional collision resistance testing methods mostly use manual operation, which is not only inefficient, but also difficult to ensure the consistency and accuracy of testing.

[0003] In terms of pressure resistance testing, existing equipment usually uses mechanical or hydraulic pressure application devices. Although these devices can provide stable pressure, they often have complex structures, cumbersome operations, and are difficult to achieve precise pressure application to objects of different shapes and sizes. In addition, when applying pressure, these devices are likely to cause excessive pressure on local parts of the object, resulting in damage to the object or distortion of measurement results.

[0004] In terms of collision resistance testing, existing equipment mostly uses free fall or impact methods to simulate the collision process by controlling the impact speed and impact angle of the object. However, this method is often difficult to precisely control the intensity and duration of the collision, and it is impossible to monitor the stress situation of the object during the collision process in real time. In addition, after the traditional collision resistance testing equipment finishes the test, it usually requires manual collection of broken objects or debris, which is inefficient and prone to omission.

[0005] Therefore, existing pressure resistance and collision resistance testing equipment has certain deficiencies in terms of measurement accuracy, operation convenience, testing consistency, and automation level. To solve these problems, it is necessary to develop a device that can achieve precise, stable, and efficient pressure resistance and collision resistance testing of objects. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a multifunctional pressure detection device, which realizes uniform distribution and precise control of the force on the object; at the same time, through the coordinated work of components such as a driving motor, a toothed-gearless gear, a rack, and a moving frame, the reciprocating movement and automatic blanking function of the material box and the objects inside it are realized, thereby improving the test efficiency and accuracy.

[0007] To achieve the above object, the present invention is realized by the following technical solutions: A multifunctional pressure detection device, characterized in that: it includes a material box, a pressure box assembly is arranged on the upper side of the material box, the pressure box assembly includes a pressure box body, an airbag is arranged inside the pressure box body, a pressure plate is fixedly arranged at the lower part of the airbag, the pressure plate is slidably connected to the inside of the pressure box body, a pressure sensor is fixedly arranged on the lower side of the pressure plate, an air inlet and an air outlet are arranged on the airbag, and the air inlet and the air outlet extend to the outside of the pressure box body through the pressure box body, a fixing plate is fixedly arranged on the side part of the pressure box body, and a bottom plate is fixedly arranged at the bottom of the fixing plate.

[0008] In a preferred technical solution, a first guide rail is fixedly connected to the top of the bottom plate at equal intervals, a moving frame is slidably connected to the top of the first guide rail, the material box is slidably arranged on the upper side of the moving frame, a rectangular groove is arranged inside one side of the moving frame, a toothless gear is arranged at the center of the inner wall of the rectangular groove, racks are arranged on the inner wall of the rectangular groove and on the upper and lower sides of the toothless gear, a rotating shaft is fixedly connected to the center of the toothless gear, a driven wheel is fixedly connected to the outer end of the rotating shaft, a driving motor is fixedly connected to the inner wall of the bottom plate, a driving wheel is fixedly connected to the output shaft of the driving motor, the driving wheel is connected to the driven wheel through a belt for transmission, a push shaft is fixedly arranged on the inner side of the side part of the moving frame, a push groove corresponding to the push shaft is arranged on the material box, and the push shaft is located inside the push groove.

[0009] In a preferred technical solution, an opening is arranged at one end of the material box, a first buffer spring is fixedly connected to the inner wall of the other end of the material box, a first stopper is fixedly connected to the inner end of the first buffer spring, a second stopper is slidably arranged inside the material box at the end with the opening, a second buffer spring is fixedly arranged on the outer end side of the second stopper, and the outer end side of the second buffer spring is fixedly connected to a spring fixing plate, and the spring fixing plate is fixedly connected to the bottom plate through a bracket.

[0010] Preferred technical solution: The pushing groove is a long groove, the pushing shaft is slidably fitted with the pushing groove, one end of the upper side of the moving frame close to the first stopper is fixedly provided with an end plate, the inner side of the end plate is fixedly provided with a third compression spring, the inner end side of the third compression spring is fixedly connected with an auxiliary pushing plate, the inner side of the auxiliary pushing plate contacts the end side of the material box, one side of the material box close to the rectangular groove is fixedly provided with a blocking shaft, a guiding groove is arranged on the moving frame at a position corresponding to the blocking shaft, the blocking shaft extends to the outside of the moving frame through the guiding groove, the guiding groove includes a horizontal guiding groove and an arc guiding groove arranged on the upper side of the horizontal guiding groove, the material box is slidably arranged on the moving frame through a second guide rail, the second guide rail is located at the middle position of the bottom of the material box, and the second guide rail raises the material box so that there is a certain distance between the material box and the moving frame.

[0011] Preferred technical solution: A plurality of material boxes are provided, and the material boxes are fixedly connected to each other.

[0012] Preferred technical solution: The fixed plate and the pressure box body are provided with corresponding feeding ports, and the top of the air bag is fixedly connected to the upper side inside the pressure box body.

[0013] Preferred technical solution: The racks on the upper and lower parts of the inner wall of the rectangular groove are symmetrically arranged, and the number of teeth of the gear of the toothless gear is the same as that of the rack.

[0014] Preferred technical solution: The first stopper is circular or square, the second stopper is square, and the outer side of the second stopper contacts the inner side of the material box.

[0015] The present invention provides a multifunctional pressure detection device. It has the following beneficial effects:

[0016] Realize the pressure resistance performance test of an object: Through the design of the pressure box assembly, the objects inside the material box can be accurately pressure-tested, so as to accurately measure the pressure resistance performance of the objects. By using the air bag to apply pressure, the force on the object is more uniform, the measured parameters are more accurate, and it is not easy to cause damage to the components, and it is convenient to use.

[0017] Realize the collision experiment of an object: Through the coordinated work of components such as the driving motor, the toothless gear, the rack and the moving frame, the reciprocating movement of the material box and the objects inside it can be realized, and then the collision experiment can be carried out. This design can collect broken debris or the objects after being broken, so as to calculate the breakage rate, providing strong support for the evaluation of the anti-collision performance of the product.

[0018] Automatic blanking function: After the collision experiment is completed, the device can realize the automatic tilting of the material box and the automatic sliding out of the objects inside through the cooperation of the toothless gear and the blocking shaft, and the elevation effect of the second guide rail. This design not only improves the blanking efficiency, but also reduces the tediousness of manual operation.

[0019] Internal buffering and limiting: Components such as the first buffer spring, the first stop block, the second stop block, and the second buffer spring are arranged inside the material box, realizing internal buffering, avoiding direct impact of objects on the inner wall of the material box, and protecting the box body and the objects. At the same time, the first stop block and the second stop block also play a role in limiting, ensuring the stability of the material box during movement.

[0020] Multiple groups of detection tests: By setting multiple material boxes and fixedly connecting them, multiple groups of detection tests can be carried out simultaneously, improving the detection efficiency.

[0021] Convenient for adding objects: By reducing the gas in the airbag to make it contract, the feeding port can be made to communicate with the inside of the material box, so that objects can be conveniently added into the material box through the feeding port.

[0022] In summary, the multifunctional pressure detection device has various beneficial effects. It can not only test the pressure resistance and collision resistance of objects, but also has the advantages of automatic blanking, internal buffering and limiting, multiple groups of detection tests, and convenient addition of objects, providing strong support for improving the detection efficiency and accuracy of products. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the present invention after removing the pressure box assembly;

[0025] Figure 3 It is a schematic structural diagram of the pressure box assembly of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the side part of the moving frame of the present invention.

[0027] Figure 5 It is a schematic structural diagram of the cooperation between the material box and other components when the material box is horizontal in the present invention.

[0028] Figure 6 It is a schematic structural diagram of the cooperation between the material box and other components when the material box is tilted in the present invention.

[0029] Figure 7 It is a schematic structural diagram of the cooperation between the inside of the material box and other components when the material box is tilted in the present invention.

[0030] Figure 8 It is a schematic structural diagram of the connection between the material box and the second guide rail in the present invention.

[0031] In the figure: 1. Material box; 2. Pressure box assembly; 3. Bottom plate; 4. First guide rail; 5. Moving frame; 6. Rectangular groove; 7. Toothless gear; 8. Rack; 9. Rotating shaft; 10. Driven wheel; 11. Driving motor; 12. Driving wheel; 13. Belt; 14. Pushing shaft; 15. Pushing groove; 16. First buffer spring; 17. First stop block; 18. Second stop block; 19. Second buffer spring; 20. Spring fixing plate; 21. Bracket; 22. End plate; 23. Third compression spring; 24. Auxiliary pushing plate; 25. Stop shaft; 26. Guide groove; 27. Second guide rail; 201. Pressure box body; 202. Airbag; 203. Pressure plate; 204. Pressure sensor; 205. Air inlet; 206. Air outlet; 207. Fixing plate; 208. Feed inlet; 2601. Horizontal guide groove; 2602. Arc guide groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The present invention provides a technical solution:

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, a multifunctional pressure detection device includes a material box 1. A pressure box assembly 2 is arranged on the upper side of the material box 1. The pressure box assembly 2 includes a pressure box body 201. An airbag 202 is arranged inside the pressure box body 201. A pressure plate 203 is fixedly arranged at the lower part of the airbag 202. The pressure plate 203 is slidably connected to the inside of the pressure box body 201. A pressure sensor 204 is fixedly arranged on the lower side of the pressure plate 203. An air inlet 205 and an air outlet 206 are arranged on the airbag 202. The air inlet 205 and the air outlet 206 extend to the outside of the pressure box body 201 through the pressure box body 201. A fixing plate 207 is fixedly arranged on the side part of the pressure box body 201. The bottom of the fixing plate 207 is fixedly arranged with a bottom plate 3. The present invention can realize the pressure test of the object inside the material box 1 through the pressure box assembly 2, so as to detect the pressure resistance performance of the object.

[0035] As Figure 1 and Figure 2As shown, a first guide rail 4 is fixedly connected to the top of the bottom plate 3 at equal intervals. A moving frame 5 is slidably connected to the top of the first guide rail 4. The material box 1 is slidably arranged on the upper side of the moving frame 5. A rectangular groove 6 is arranged inside one side of the moving frame 5. A toothless gear 7 is arranged at the center of the inner wall of the rectangular groove 6. Rack bars 8 are arranged on the inner wall of the rectangular groove 6 and on the upper and lower sides of the toothless gear 7. A rotating shaft 9 is fixedly connected to the center of the toothless gear 7. A driven wheel 10 is fixedly connected to the outer end of the rotating shaft 9. A driving motor 11 is fixedly connected to the inner wall of the bottom plate 3. A driving wheel 12 is fixedly connected to the output shaft of the driving motor 11. The driving wheel 12 is connected to the driven wheel 10 through a belt 13 for transmission. A pushing shaft 14 is fixedly arranged inside the side part of the moving frame 5. A pushing groove 15 corresponding to the pushing shaft 14 is arranged on the material box 1. The pushing shaft 14 is located inside the pushing groove 15. The reciprocating movement of the moving frame 5 is realized, and then the reciprocating movement of the material box 1 is driven, so as to realize the collision experiment of the internal objects, collect the broken debris or the broken objects, and calculate the breakage rate therefrom.

[0036] As Figure 2 and Figure 7 shown, an opening is arranged at one end of the material box 1. A first buffer spring 15 is fixedly connected to the inner wall of the other end of the material box 1. A first stop block 17 is fixedly connected to the inner end of the first buffer spring 16. A second stop block 18 is slidably arranged inside the material box 1 at the end with the opening. A second buffer spring 19 is fixedly arranged on the outer end side of the second stop block 18. The outer end side of the second buffer spring 19 is fixedly connected to a spring fixing plate 20. The spring fixing plate 20 is fixedly connected to the bottom plate 3 through a bracket 21, so as to realize internal buffering, avoid the impact of the object on the inner wall of the material box 1, avoid damaging the box body, and at the same time, the first stop block 17 and the second stop block 18 also play a role in limiting.

[0037] As Figure 2 and Figure 5 and Figure 6As shown, the pushing groove 15 is a long groove, the pushing shaft 14 is slidably engaged with the pushing groove 15. At the upper side of the moving frame 5 and near one end of the first stop block 17, an end plate 22 is fixedly arranged. Inside the end plate 22, a third compression spring 23 is fixedly arranged. The inner end side of the third compression spring 23 is fixedly connected with an auxiliary pushing plate 24. The inner side of the auxiliary pushing plate 24 is in contact with the end side of the material box 1. At the side of the material box 1 close to the rectangular groove 6, a stop shaft 25 is fixedly arranged. At the position corresponding to the stop shaft 25 on the moving frame 5, a guiding groove 26 is arranged. The stop shaft 25 extends through the guiding groove 26 to the outside of the moving frame 5. The guiding groove 26 includes a horizontal guiding groove 2601 and an arc-shaped guiding groove 2602 arranged on the upper side of the horizontal guiding groove 2601. The material box 1 is slidably arranged on the moving frame 5 through a second guide rail 27. The second guide rail 27 is located at the middle position of the bottom of the material box 1. The second guide rail 27 raises the material box 1 so that there is a certain distance between the material box 1 and the moving frame 5. When the driving motor 11 is not started and the device is stationary, the third compression spring 23 will push the end side of the material box 1 through the auxiliary pushing plate 24, so that the stop shaft 25 is located on the tooth track of the missing-tooth gear 7 and cooperates with the teeth. At this time, when the driving motor 11 is started, the missing-tooth gear rotates, and the stop shaft 25 will be clamped between the teeth of the missing-tooth gear 7, resulting in the stop shaft 25 being lifted along the track of the arc-shaped guiding groove 2602 by the teeth of the missing-tooth gear 7. After the stop shaft 25 is lifted, due to the raising effect of the second guide rail 27, there is a cooperation between the pushing shaft 14 and the pushing groove 15 in the middle of the material box 1, so that one end of the material box 1 provided with the stop shaft 25 is lifted, and the other end of the material box 1 will descend, so that a space will be formed between the second stop block 18 and the bottom of the material box 1. The object in the material box 1 can automatically slide out along the inclined bottom of the material box 1, thus realizing the function of automatic blanking. In addition, when the missing-tooth gear 7 lifts the stop shaft 25 to the highest point, the outer missing-tooth gear 7 will disengage from the stop shaft 25. When disengaging, since there are multiple teeth on the missing-tooth gear 7, under the action of the teeth of the missing-tooth gear 7, the stop shaft 25 will have a vibrating effect, resulting in the vibrating effect of the material box 1, which is beneficial to the sliding out of the object inside the material box 1, especially beneficial to the blanking of debris generated during the collision test. After the stop shaft 25 is completely disengaged from the missing-tooth gear 7, it will fall back to the position of the horizontal guiding groove 2601.

[0038] As Figure 2 shown, there are 2 material boxes 1, and the material boxes 1 are fixedly connected to each other. Multiple groups of detection tests can be carried out simultaneously.

[0039] As Figure 1 and Figure 3As shown, corresponding feed ports 208 are provided on the fixing plate 207 and the pressure box body 201. The top of the airbag 202 is fixedly connected to the upper side inside the pressure box body 201. Reducing the gas in the airbag 202 causes the airbag 202 to contract, and the pressure plate 203 will rise, resulting in the communication between the feed port 208 and the inside of the material box 1 through the inside of the pressure box body 201. Then, an object can be added to the inside of the material box 1 through the feed port 208.

[0040] As Figure 1 and Figure 2 As shown, the racks 8 on the upper and lower parts of the inner wall of the rectangular groove 6 are symmetrically arranged, and the number of teeth of the teeth of the toothless gear 7 is the same as that of the rack 8. The first stop block 17 is circular, the second stop block 18 is square, and the outside of the second stop block 18 is in contact with the inside of the material box 1.

[0041] As Figures 1 to 8 As shown, the working process of the present invention is as follows:

[0042] When detecting the pressure, there is no need to start the driving motor 11, so that the material box 1 is in a stationary state. The upper position of the material box 1 should correspond to the position of the pressure plate 203. The airbag 202 is in a contracted state. An object is filled into the material box 1 through the feed port 208, and then the airbag 202 is inflated to make it expand, thereby driving the pressure plate 203 to press the object in the material box 1. Then, the applied pressure is detected by the pressure sensor 4, and then according to the change of the object, the compression parameter of the object is measured. The present invention adopts the method of applying pressure by the airbag, so that the object is more evenly stressed, which is convenient for measuring the parameters more accurately. The uniform pressure is not easy to cause damage to the components, and it is convenient to use.

[0043] Collision and fragmentation detection: After filling the object into the cartridge 1 through the feed inlet 208, the airbag 202 is in a semi-contracted state, that is, the feed inlet 208 is closed, and the pressure plate 203 does not extend into the interior of the cartridge 1. The pressure box body 201 covers the upper side of the cartridge 1 to prevent the object from popping out during collision, thus avoiding the pressure plate 203 from blocking the movement of the cartridge 1. Before starting the drive motor 11, the missing-tooth gear 7 is in a state just disengaged from the stop shaft 25. Then, quickly start the drive motor 11. After the missing-tooth gear 7 rotates, it will engage with the rack 8, thereby driving the moving frame 5 to move. After the moving frame 5 moves, it drives the cartridge 1 to move through the cooperation of the push shaft 14 and the push groove 15. Due to the inertia of the cartridge 1 after moving, when the missing-tooth gear 7 moves to the position corresponding to the stop shaft 25, the stop shaft 25 is actually in the inertia of moving outward from the cartridge 1, resulting in the missing-tooth gear 7 not contacting the stop shaft 25, thus preventing the missing-tooth gear from lifting the stop shaft 25. The objects inside the repeatedly moving cartridge 1 will collide with each other. After the collision is completed, slowly reduce the speed of the starting motor, and finally the missing-tooth gear 7 will contact the stop shaft 25, resulting in the stop shaft 25 being lifted, with one end of the cartridge 1 lifted and the other end lowered, realizing automatic feeding. During the collision test of the present invention, it can not only control the repeated movement of the cartridge 1 and the collision of the objects inside the cartridge 1, but also control the inclination of the cartridge 1 after the collision, thereby controlling the automatic feeding, which is beneficial to improving the efficiency.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional pressure detection device, characterized in that: The invention comprises a material box (1), wherein a pressure box assembly (2) is arranged on the upper side of the material box (1), wherein the pressure box assembly (2) comprises a pressure box body (201), wherein an air bag (202) is arranged on the inner side of the pressure box body (201), wherein a pressure plate (203) is fixedly arranged at the lower part of the air bag (202), wherein the pressure plate (203) is slidably connected to the inside of the pressure box body (201), wherein a pressure sensor (204) is fixedly arranged at the lower side of the pressure plate (203), wherein an air inlet (205) and an air outlet (206) are arranged on the air bag (202), wherein the air inlet (205) and the air outlet (206) extend through the pressure box body (201) to the outer side of the pressure box body (201), wherein a fixing plate (207) is fixedly arranged on the side of the pressure box body (201), and wherein a bottom plate (3) is fixedly arranged at the bottom of the fixing plate (207).

2. A multifunctional pressure detection device according to claim 1, characterized in that: The top of the bottom plate (3) is equidistantly fixedly connected with a first guide rail (4), the top of the first guide rail (4) is slidably connected with a moving frame (5), the material box (1) is slidably arranged on the upper side of the moving frame (5), a rectangular groove (6) is arranged inside one side of the moving frame (5), a toothless gear (7) is arranged at the center of the inner wall of the rectangular groove (6), racks (8) are arranged on the inner wall of the rectangular groove (6) and on the upper and lower sides of the toothless gear (7), a rotating shaft (9) is fixedly connected to the center of the toothless gear (7), and the The outer end of the rotating shaft (9) is fixedly connected to a driven wheel (10), the inner wall of the bottom plate (3) is fixedly connected to a driving motor (11), the output shaft of the driving motor (11) is fixedly connected to a driving wheel (12), the driving wheel (12) is connected to the driven wheel (10) by a belt (13), a driving shaft (14) is fixedly provided on the inner side of the side of the moving frame (5), a driving groove (15) corresponding to the driving shaft (14) is provided on the material box (1), and the driving shaft (14) is located inside the driving groove (15).

3. A multifunctional pressure detection device according to claim 2, characterized in that: One end of the material box (1) is provided with an opening, and the inner wall of the other end of the material box (1) is fixedly connected to a first buffer spring (15), the inner end of the first buffer spring (16) is fixedly connected to a first stopper (17), a second stopper (18) is slidably provided on the inner side of the material box (1) and located at one end of the opening, a second buffer spring (19) is fixedly provided on the outer end side of the second stopper (18), a spring fixing plate (20) is fixedly connected to the outer end side of the second buffer spring (19), and the spring fixing plate (20) is fixedly connected to the bottom plate (3) via a bracket (21).

4. A multifunctional pressure detection device according to claim 3, characterized in that: The pushing groove (15) is a long groove, the pushing shaft (14) is slidably matched with the pushing groove (15), an end plate (22) is fixedly provided on the upper side of the moving frame (5) and close to one end of the first stopper (17), a third compression spring (23) is fixedly provided on the inner side of the end plate (22), an auxiliary pushing plate (24) is fixedly connected to the inner end side of the third compression spring (23), the inner side of the auxiliary pushing plate (24) is in contact with the end side of the material box (1), a stopper shaft (25) is fixedly provided on one side of the material box (1) close to the rectangular groove (6), and the moving frame (5) is fixedly provided with a third compression spring (23) on the inner side of the third compression spring (23). ) and is provided with a guide groove (26) at a position corresponding to the stop shaft (25), the stop shaft (25) extending to the outside of the movable frame (5) through the guide groove (26), the guide groove (26) comprising a horizontal guide groove (2601) and an arc guide groove (2602) provided on the upper side of the horizontal guide groove (2601), the material box (1) is slidably provided on the movable frame (5) through a second guide rail (27), the second guide rail (27) being located at the middle position of the bottom of the material box (1), the second guide rail (27) raising the material box (1) so that there is a certain distance between the material box (1) and the movable frame (5).

5. A multifunctional pressure detection device according to claim 1, characterized in that: The material boxes (1) are provided in plurality, and the material boxes (1) are fixedly connected to each other.

6. A multifunctional pressure detection device according to claim 1, characterized in that: The fixing plate (207) and the pressure box body (201) are provided with corresponding feed ports (208), and the top of the airbag (202) is fixedly connected to the upper side of the inside of the pressure box body (201).

7. A multifunctional pressure detection device according to claim 2, characterized in that: The racks (8) at the upper and lower parts of the inner wall of the rectangular groove (6) are symmetrically arranged, and the number of teeth of the toothless gear (7) is the same as that of the rack (8).

8. A multifunctional pressure detection device according to claim 3, characterized in that: The first stopper (17) is circular or square, the second stopper (18) is square, and the outer side of the second stopper (18) contacts the inner side of the material box (1).

Images