Calibration device for cabin pressure tester

Abstract

The utility model discloses a cabin pressure tester calibration device, and relates to the technical field of pressure gauge calibration. The device comprises a full-automatic pressure calibration bench, the upper surface of the full-automatic pressure calibration bench is provided with three interfaces which are transversely distributed at equal intervals, and the upper surface of the full-automatic pressure calibration bench is provided with a lifting frame mechanism which can move back and forth. A clamping assembly used for clamping the pressure gauge is arranged at the position, corresponding to each connector, above the lifting frame mechanism. On one hand, the lifting frame mechanism is used for driving the rotating assembly, the clamping assemblies and the pressure gauges clamped in the clamping assemblies to ascend according to the preset height and speed, and on the other hand, the rotating assembly is controlled to enable the three clamping assemblies to reversely rotate according to the preset angle and rotating speed. When the pressure gauge is calibrated, the pressure gauge fixed in the clamping assembly is synchronously driven to reversely rotate, so that the pressure gauge is rotationally separated from the interface, and finally, the clamping assembly is controlled to release the clamping of the pressure gauge, so that the calibrated pressure gauge can be directly taken down.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge calibration technology, specifically to a cabin pressure tester calibration device. Background Technology

[0002] Cabin pressure testing equipment is an indispensable piece of equipment in the aerospace field. Its main function is to measure and monitor pressure changes inside the cabin. Cabin pressure testing equipment calibration devices are special equipment or systems for calibrating cabin pressure testing equipment. Since the accuracy and reliability of cabin pressure testing equipment are crucial to flight safety, regular calibration is essential.

[0003] Existing fully automatic pressure calibration benches typically require experimenters to manually connect the pressure gauges to the calibration bench when calibrating pressure gauges. This process is not only time-consuming and labor-intensive, but the tightness of the manual operation by the experimenters is also inconsistent, which can easily affect the sealing performance and measurement accuracy of the pressure gauges. Therefore, a cabin pressure tester calibration device is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing fully automatic pressure calibration benches usually require experimental personnel to manually connect the pressure gauge to the calibration bench when calibrating the pressure gauge. This invention provides a cabin pressure tester calibration device.

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

[0006] A cabin pressure tester calibration device includes a fully automatic pressure calibration table. The upper surface of the fully automatic pressure calibration table is provided with three horizontally equidistant interfaces. The upper surface of the fully automatic pressure calibration table is provided with a lifting frame mechanism that can move back and forth. Above the lifting frame mechanism, corresponding to the position of each interface, there is a clamping component for clamping the pressure gauge. The lifting frame mechanism is provided with a rotating component for driving the three clamping components to rotate.

[0007] Furthermore, the lifting frame mechanism includes a hydraulic rod, and two hydraulic rods are provided on the upper surface of the fully automatic pressure calibration table. The output ends of the two hydraulic rods are fixedly installed on the lifting platform, and a round hole is opened on the upper surface of the lifting platform corresponding to the position of each interface.

[0008] Furthermore, the lifting frame mechanism also includes convex grooves. The upper surface of the fully automatic pressure calibration table has convex grooves corresponding to the positions of the two hydraulic rods. A protrusion is fixedly installed at the bottom end of each hydraulic rod. Threaded grooves are opened on the side of the two protrusions that are far apart from each other. Two threaded holes are opened on the side of the two convex grooves that are far apart from each other. Each threaded groove is connected to the adjacent threaded hole by a bolt with a common thread. Two damping shafts are movably installed on the rear side of the fully automatic pressure calibration table. A positioning rod is fixedly installed on the side wall of each damping shaft.

[0009] Furthermore, the clamping assembly includes blocks, and a set of blocks is set above the lifting platform corresponding to the position of each interface. Each set of blocks is composed of two blocks. Hydraulic rods are fixedly installed on the side of each pair of adjacent blocks that are far apart from each other. An arc-shaped block is fixedly installed at the output end of each hydraulic rod.

[0010] Furthermore, the clamping assembly also includes anti-slip strips, with several equidistantly distributed anti-slip strips fixedly installed on the inner arc surface of each arc block. The anti-slip strips are made of elastic rubber material.

[0011] Furthermore, the rotating assembly includes an annular groove. An annular groove is provided on the upper surface of the lifting platform corresponding to the position of each interface. A ring is movably installed inside each annular groove. A worm gear is fixedly installed on the top of each ring. Each block is fixedly installed on the upper surface of the adjacent worm gear. An L-shaped rod is fixedly installed at one end of the lifting platform. A servo motor is fixedly installed inside the L-shaped rod. A worm is fixedly connected to the output end of the servo motor. The worm meshes with each worm gear.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. When connecting the pressure gauge to the interface, this utility model simply requires placing the pressure gauge inside any set of clamping components, aligning the pressure gauge's interface through the lifting frame mechanism with the lower interface, and using the clamping components to hold the pressure gauge. Then, controlling the rotating component causes all three sets of clamping components to rotate at a preset angle and speed. The pressure gauge fixed inside the clamping components will be synchronously driven to rotate. At the same time, the lifting frame mechanism also drives the rotating component, clamping components, and the pressure gauge clamped inside the clamping components to descend at a preset height and speed. At this point, the pressure gauge will rotate and move downward under the combined action of the lifting frame mechanism, clamping components, and rotating component, causing the pressure gauge interface to connect threadedly with the lower interface, completing the connection between the pressure gauge and the interface, and the fully automatic pressure gauge can then be started. The calibration bench calibrates the interface. After the pressure gauge is calibrated, the lifting mechanism drives the rotating assembly, clamping assembly, and the pressure gauge clamped inside the clamping assembly to rise to a preset height and speed. At the same time, the rotating assembly is controlled to make the three clamping assemblies rotate in opposite directions at preset angles and speeds. The pressure gauge fixed inside the clamping assembly will be driven to rotate in opposite directions synchronously, causing the pressure gauge to disengage from the interface. Finally, the clamping assembly is operated to release the pressure gauge, and the calibrated pressure gauge can be directly removed. The lifting mechanism can move back and forth, allowing the experimenter to choose whether to manually install the pressure gauge according to the actual testing situation. If the experimenter chooses to install it manually, the lifting mechanism can be moved backward a certain distance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the rotating component of this utility model;

[0016] Figure 3 This is a schematic diagram of the fully automatic pressure calibration bench of this utility model;

[0017] Reference numerals: 1. Fully automatic pressure calibration table; 2. Interface; 3. Lifting frame mechanism; 301. Hydraulic rod one; 302. Lifting platform; 303. Round hole; 304. Convex groove; 305. Protrusion; 306. Threaded groove; 307. Threaded hole; 308. Bolt; 309. Damping shaft; 310. Positioning rod; 4. Clamping assembly; 401. Square block; 402. Hydraulic rod two; 403. Arc-shaped block; 404. Anti-slip strip; 5. Rotating assembly; 501. Annular groove; 502. Circular ring; 503. Worm gear; 504. Worm; 505. L-shaped rod; 506. Servo motor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1 to 3As shown, a cabin pressure testing instrument calibration device includes a fully automatic pressure calibration bench 1. The upper surface of the fully automatic pressure calibration bench 1 has three horizontally equidistant interfaces 2. A lifting frame mechanism 3, which can move back and forth, is also provided on the upper surface of the fully automatic pressure calibration bench 1. Above the lifting frame mechanism 3, corresponding to the position of each interface 2, a clamping component 4 for holding a pressure gauge is provided. The lifting frame mechanism 3 is provided with a rotating component 5 for driving the three sets of clamping components 4 to rotate. It should be noted that when connecting the pressure gauge to the interface 2, simply place the pressure gauge inside any set of clamping components 4, aligning the pressure gauge's interface 2 through the lifting frame mechanism 3 with the lower interface 2, and clamp the pressure gauge using the clamping components 4. Then, control the rotating component 5 to rotate all three sets of clamping components 4 according to a preset angle and speed. The pressure gauge fixed inside the clamping components 4 will be synchronously driven to rotate, while simultaneously, the lifting frame mechanism 3 also drives the rotating component 5, the clamping components 4, and the pressure gauge clamped inside the clamping components 4 to rotate at a preset height and speed. As the pressure gauge descends, it rotates and moves downward under the combined action of the lifting frame mechanism 3, clamping assembly 4, and rotating assembly 5, connecting the pressure gauge interface 2 with the lower interface 2 via a thread, thus completing the connection between the pressure gauge and interface 2. This allows the fully automatic pressure calibration bench 1 to begin calibrating interface 2. After calibration, the lifting frame mechanism 3 drives the rotating assembly 5, clamping assembly 4, and the pressure gauge clamped inside the clamping assembly 4 to rise at a preset height and speed. Simultaneously, the rotating assembly 5 is controlled to rotate the three clamping assemblies 4 in opposite directions at preset angles and speeds. The pressure gauge fixed inside the clamping assembly 4 is synchronously driven to rotate in the opposite direction, disengaging it from interface 2. Finally, the clamping assembly 4 is manipulated to release the pressure gauge, allowing the calibrated pressure gauge to be removed directly. The lifting frame mechanism 3 can move back and forth, allowing the experimenter to choose whether to manually install the pressure gauge based on the actual testing situation. If manual installation is desired, the lifting frame mechanism 3 can be moved backward a certain distance.

[0023] like Figures 1 to 3 As shown, the lifting frame mechanism 3 includes a hydraulic rod 301. Two hydraulic rods 301 are provided on the upper surface of the fully automatic pressure calibration table 1. The output ends of the two hydraulic rods 301 are fixedly installed on the lifting platform 302. The upper surface of the lifting platform 302 is provided with a round hole 303 corresponding to the position of each interface 2. It should be noted that by controlling the extension and retraction of the two hydraulic rods 301, the two hydraulic rods 301 can jointly drive the lifting platform 302 to rise or fall. The lifting of the lifting platform 302 can make the rotating component 5, the clamping component 4 and the pressure gauge inside the clamping component 4 rise and fall synchronously.

[0024] like Figures 1 to 3As shown, the lifting frame mechanism 3 also includes a convex groove 304. The upper surface of the fully automatic pressure calibration table 1 has convex grooves 304 corresponding to the positions of the two hydraulic rods 301. A protrusion 305 is fixedly installed at the bottom end of each hydraulic rod 301. Threaded grooves 306 are respectively opened on the side of the two protrusions 305 that are far apart from each other. Two threaded holes 307 are respectively opened on the side of the two convex grooves 304 that are far apart from each other. Each threaded groove 306 is connected to the adjacent threaded hole 307 by a bolt 308 with a common thread. Two damping shafts 309 are movably installed on the rear side of the fully automatic pressure calibration table 1. A positioning rod 310 is fixedly installed on the side wall of each damping shaft 309. It should be noted that… If the experimenter uses a manual installation method, first rotate the two positioning rods 310 so that the free ends of the two positioning rods 310 face upwards. Then rotate the two bolts 308 respectively so that the two bolts 308 rotate out of the corresponding threaded holes 307 and threaded grooves 306 respectively. Then pull the lifting platform 302 backwards so that the two protrusions 305 slide inside the corresponding convex grooves 304 respectively until the two protrusions 305 contact the two positioning rods 310 respectively and stop moving. Then thread the two bolts 308 to the threaded grooves 306 and the threaded holes 307 adjacent to the threaded grooves 306 respectively. This will fully expose the interface 2, making it convenient for the experimenter to install the pressure gauge manually.

[0025] like Figure 1 , Figure 2 As shown, the clamping assembly 4 includes blocks 401. A set of blocks 401 is provided above the lifting platform 302 corresponding to each interface 2. Each set of blocks 401 is composed of two blocks 401. A hydraulic rod 402 is fixedly installed on the side of each pair of adjacent blocks 401 that is far apart from each other. An arc block 403 is fixedly installed at the output end of each hydraulic rod 402. It should be noted that when the pressure gauge is placed in the middle of the two corresponding arc blocks 403, the interface 2 of the pressure gauge passes through the corresponding circular hole 303. If the two corresponding hydraulic rods 402 retract, the two arc blocks 403 can be controlled to move closer to each other to clamp the pressure gauge. If the two corresponding hydraulic rods 402 extend, the two arc blocks 403 can be controlled to move away from each other to release the clamping of the pressure gauge.

[0026] like Figure 1 , Figure 2 As shown, the clamping assembly 4 also includes anti-slip strips 404. Several anti-slip strips 404 are fixedly installed on the inner arc surface of each arc block 403. The anti-slip strips 404 are made of elastic rubber material. It should be noted that the arc block 403 can increase the friction force, so when two arc blocks 403 are close to each other to clamp the pressure gauge, the clamping stability of the pressure gauge can be improved.

[0027] like Figure 1 , Figure 2 As shown, the rotating assembly 5 includes an annular groove 501. An annular groove 501 is formed on the upper surface of the lifting platform 302 corresponding to the position of each interface 2. A circular ring 502 is movably installed inside each annular groove 501. A worm gear 503 is fixedly installed on the top of each circular ring 502. Each block 401 is fixedly installed on the upper surface of the adjacent worm gear 503. An L-shaped rod 505 is fixedly installed at one end of the lifting platform 302. A servo motor 506 is fixedly installed inside the L-shaped rod 505. A worm gear 504 is fixedly connected to the output end of the servo motor 506. 504 is meshed with each worm gear 503. It should be noted that when the servo motor 506 is started, the servo motor 506 can drive the worm 504 to reciprocate according to the angle and rotation. The reciprocating rotation of the worm 504 can drive each worm gear 503 to reciprocate. The reciprocating rotation of each worm gear 503 can drive the ring 502 connected to it to rotate synchronously inside the corresponding annular groove 501. Furthermore, the reciprocating rotation of each worm gear 503 can drive the clamping assembly 4 connected to it to rotate synchronously. The reciprocating rotation of the clamping assembly 4 can drive the clamped pressure gauge to rotate synchronously.

[0028] In summary:

[0029] When connecting the pressure gauge to interface 2, simply place the pressure gauge inside any set of clamping components 4, aligning the pressure gauge's interface 2 through the lifting mechanism 3 with the lower interface 2, and clamp the pressure gauge using the clamping components 4. Then, control the rotating component 5 to rotate all three sets of clamping components 4 at preset angles and speeds. The pressure gauge fixed inside the clamping components 4 will be driven to rotate synchronously. At the same time, the lifting mechanism 3 also drives the rotating component 5, clamping components 4, and the pressure gauge clamped inside the clamping components 4 to descend at preset heights and speeds. At this point, the pressure gauge will rotate and move downwards under the combined action of the lifting mechanism 3, clamping components 4, and rotating component 5, causing the pressure gauge interface 2 to connect threadedly with the lower interface 2, completing the connection between the pressure gauge and interface 2. The fully automatic pressure calibration can then be started. The test bench 1 calibrates the interface 2. After the pressure gauge is calibrated, the lifting frame mechanism 3 drives the rotating component 5, the clamping component 4, and the pressure gauge clamped inside the clamping component 4 to rise at a preset height and speed. At the same time, the rotating component 5 is controlled to make the three clamping components 4 rotate in opposite directions at preset angles and speeds. The pressure gauge fixed inside the clamping component 4 will be driven to rotate in opposite directions synchronously, causing the pressure gauge to rotate and disengage from the interface 2. Finally, the clamping component 4 is operated to release the clamp on the pressure gauge, and the calibrated pressure gauge can be directly removed. The lifting frame mechanism 3 can move back and forth, which allows the tester to choose whether to manually install the pressure gauge according to the actual test situation. If the tester chooses to install it manually, the lifting frame mechanism 3 can be moved backward a certain distance.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A calibration device for a cabin pressure testing instrument, characterized in that, The system includes a fully automatic pressure calibration table (1), with three horizontally equidistant interfaces (2) on the upper surface of the fully automatic pressure calibration table (1), a lifting frame mechanism (3) that can move back and forth on the upper surface of the fully automatic pressure calibration table (1), a clamping component (4) for clamping pressure gauges is provided above the lifting frame mechanism (3) corresponding to the position of each interface (2), and a rotating component (5) for driving the three clamping components (4) to rotate is provided on the lifting frame mechanism (3).

2. The cabin pressure testing instrument calibration device according to claim 1, characterized in that, The lifting frame mechanism (3) includes a hydraulic rod (301). The upper surface of the fully automatic pressure calibration table (1) is provided with two hydraulic rods (301). The output ends of the two hydraulic rods (301) are fixedly installed on the lifting platform (302). The upper surface of the lifting platform (302) is provided with a round hole (303) corresponding to the position of each interface (2).

3. The cabin pressure testing instrument calibration device according to claim 2, characterized in that, The lifting frame mechanism (3) also includes a convex groove (304). The upper surface of the fully automatic pressure calibration table (1) is provided with convex grooves (304) corresponding to the positions of the two hydraulic rods (301). A protrusion (305) is fixedly installed at the bottom end of each hydraulic rod (301). Threaded grooves (306) are provided on the side of the two protrusions (305) that are far apart from each other. Two threaded holes (307) are provided on the side of the two convex grooves (304) that are far apart from each other. Each threaded groove (306) is connected to the adjacent threaded hole (307) with a bolt (308) by a common thread. Two damping shafts (309) are movably installed on the rear side of the fully automatic pressure calibration table (1). A positioning rod (310) is fixedly installed on the side wall of each damping shaft (309).

4. The cabin pressure testing instrument calibration device according to claim 2, characterized in that, The clamping assembly (4) includes blocks (401). A set of blocks (401) is provided above the lifting platform (302) corresponding to the position of each interface (2). Each set of blocks (401) is composed of two blocks (401). A hydraulic rod (402) is fixedly installed on the side of each pair of adjacent blocks (401) that are far apart from each other. An arc-shaped block (403) is fixedly installed at the output end of each hydraulic rod (402).

5. The cabin pressure testing instrument calibration device according to claim 4, characterized in that, The clamping assembly (4) also includes anti-slip strips (404). Several anti-slip strips (404) are fixedly installed on the inner arc surface of each arc block (403). The anti-slip strips (404) are made of elastic rubber material.

6. The cabin pressure testing instrument calibration device according to claim 4, characterized in that, The rotating assembly (5) includes an annular groove (501). The upper surface of the lifting platform (302) is provided with an annular groove (501) corresponding to the position of each interface (2). A ring (502) is movably installed inside each annular groove (501). A worm gear (503) is fixedly installed on the top of each ring (502). Each block (401) is fixedly installed on the upper surface of the adjacent worm gear (503). An L-shaped rod (505) is fixedly installed at one end of the lifting platform (302). A servo motor (506) is fixedly installed inside the L-shaped rod (505). A worm (504) is fixedly connected to the output end of the servo motor (506). The worm (504) meshes with each worm gear (503).

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