Distribution box pressure airtightness detection device

Abstract

This utility model discloses a pressure-down airtightness testing device for a power distribution box, belonging to the field of airtightness testing technology. It includes a base, on which a sealed box is fixedly installed. Two limiting grooves are formed on the base, and a bidirectional screw is installed within each groove via bearings. An inner cavity is formed on the base, in which two rotating rods are rotatably installed, and a motor is installed. This pressure-down airtightness testing device uses the rotation of the bidirectional screw to move two threaded movable plates towards each other. The movement of the movable plates causes a fixed plate fixedly installed on them to move on the base surface until the two fixed plates press against the power distribution box body. Then, a telescopic air hose is connected to the power distribution box body. Finally, the sealed door is closed via a door handle to prevent the power distribution box from shifting inside the sealed box during airtightness testing, thus preventing loosening of the interface between the power distribution box and the telescopic air hose and improving operational stability.

Description

Technical Field

[0001] This utility model belongs to the field of airtightness testing technology, specifically a pressure airtightness testing device for a power distribution box. Background Technology

[0002] The distribution box pressure airtightness tester is a device used to test the airtightness of the distribution box. It usually consists of an airtightness tester, a custom mold and tooling. The device inflates and stabilizes the distribution box, and then detects the internal pressure change. Based on the pressure change, it determines whether there is a leak in the distribution box, thereby determining whether the airtightness of the distribution box meets the requirements.

[0003] Currently, when existing airtightness testing devices are used to test the airtightness of distribution boxes, the inflation process causes the distribution box to shift inside the sealed box, resulting in loosening of the interface between the distribution box and the telescopic air pipe. This affects subsequent testing work and results in low efficiency and stability. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a distribution box pressure airtightness testing device, which solves the problem that existing airtightness testing devices, when performing airtightness testing on distribution boxes, cause the distribution box to shift inside the sealed box due to the inflation process, resulting in loosening of the interface between the distribution box and the telescopic air pipe, affecting subsequent testing work, and having low work efficiency and stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a distribution box pressure airtightness detection device, comprising a base, a sealed box fixedly installed on the base, two limiting grooves opened on the base, a bidirectional screw installed in the two limiting grooves via bearings, an inner cavity opened on the base, two rotating rods rotatably installed in the inner cavity, a motor installed in the inner cavity, the output shaft of the motor connected to the rotating rods, grooved wheels installed on the two rotating rods, belts sleeved on the grooved wheels, the rotating rods passing through the base and connected to the bidirectional screws, two movable plates threadedly connected to the bidirectional screws, a fixed plate fixedly installed on the movable plates, the fixed plate slidably installed on the base, and a distribution box body placed on the base.

[0006] As a further embodiment of this utility model: a vacuum box is fixedly installed on the base, and a suction cup is installed on the vacuum box, with the suction cup located inside the sealed box.

[0007] As a further embodiment of this utility model: a cylinder is installed on the sealed box, and a test gauge is installed on the sealed box.

[0008] As a further embodiment of this utility model: a piston is slidably installed inside the cylinder, the piston is close to the inner wall of the cylinder, and a connecting rod is installed on the piston.

[0009] As a further embodiment of this utility model: the end of the connecting rod is fixedly installed with a pressure plate through the cylinder, the bottom of the cylinder is connected to a telescopic air pipe, and the telescopic air pipe passes through the sealing box and connects to the main body of the distribution box.

[0010] As a further embodiment of this utility model: two sealing doors are installed on the sealing box, and door handles are fixedly installed on the sealing doors.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This distribution box pressure airtightness testing device, consisting of a base, a sealed box, a fixing plate, and bidirectional screws, operates by placing the distribution box to be tested on the base. The motor installed inside the box is then turned on, and its output shaft drives a rotating rod. This rotation causes a grooved wheel mounted on the rotating rod to rotate, which in turn drives a belt attached to the wheel. This, in turn, drives two bidirectional screws connected to the rotating rod to rotate. The rotation of the bidirectional screws causes two threaded moving plates to move towards each other on the screws. This movement of the moving plates causes a fixing plate fixed to the bolt to move on the base surface until the two fixing plates press against the distribution box. The telescopic air hose is then connected to the distribution box. Finally, the sealed door is closed via the handle to prevent the distribution box from shifting inside the sealed box during airtightness testing, which could cause loosening of the interface between the distribution box and the telescopic air hose, thus improving operational stability. 2. This distribution box pressure airtightness detection device, through the setting of a vacuum box, suction cup, connecting rod, and telescopic air pipe, allows the operator to operate the distribution box. After the distribution box body is installed, the operator opens the vacuum box, which, through the suction cup, extracts the gas from the sealed box until it reaches a near-vacuum state. Then, the operator presses down the pressure plate, which moves the connecting rod, which in turn moves the piston downwards. The gas inside the cylinder is compressed and moves downwards, entering the distribution box body through the telescopic air pipe. The airtightness of the distribution box body can then be observed using a testing gauge, improving work efficiency and saving time and effort. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the connection between the cylinder and the sealing box of this utility model; Figure 3 This is a schematic diagram of the bidirectional screw and motor of this utility model; Figure 4 This is a schematic diagram of the structure of the pressure plate and telescopic air tube of this utility model; In the diagram: 1. Base; 2. Sealed box; 3. Sealed door; 4. Door handle; 5. Vacuum box; 6. Test gauge; 7. Distribution box body; 8. Suction cup; 9. Cylinder; 10. Limiting groove; 11. Inner cavity; 12. Rotating rod; 13. Grooved wheel; 14. Motor; 15. Belt; 16. Bidirectional screw; 17. Fixed plate; 18. Moving plate; 19. Piston; 20. Connecting rod; 21. Pressure plate; 22. Telescopic air pipe. Detailed Implementation

[0013] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0014] like Figure 1-4 As shown, the present invention provides a technical solution: a power distribution box pressure airtightness testing device, including a base 1, a vacuum box 5 fixedly installed on the base 1, a suction cup 8 installed on the vacuum box 5, the suction cup 8 being located inside a sealed box 2. Because the vacuum box 5 is installed, starting the vacuum box 5 can extract the gas inside the sealed box 2 through the suction cup 8, ensuring the subsequent airtightness testing work can proceed.

[0015] A sealed box 2 is fixedly installed on the base 1. Two sealed doors 3 are installed on the sealed box 2. Door handles 4 are fixedly installed on the sealed doors 3. Because of the installation of the sealed doors 3, the gas inside the sealed box 2 can be kept at a certain quantity during the airtightness test, thus preventing errors in the test.

[0016] A cylinder 9 is installed on the sealed box 2, and a test gauge 6 is installed on the sealed box 2.

[0017] A piston 19 is slidably installed inside the cylinder 9, and the piston 19 is close to the inner wall of the cylinder 9. A connecting rod 20 is installed on the piston 19, and the end of the connecting rod 20 passes through the cylinder 9 and is fixedly installed with a pressure plate 21. A telescopic air pipe 22 is connected to the bottom of the cylinder 9. The telescopic air pipe 22 passes through the sealed box 2 and connects to the distribution box body 7. Because of the pressure plate 21, pressing down the pressure plate 21 can drive the connecting rod 20 to move. The connecting rod 20 drives the piston 19 to move downward. The gas inside the cylinder 9 is compressed and moves downward. It enters the distribution box body 7 through the telescopic air pipe 22. The airtightness of the distribution box body 7 can be observed using the test gauge 6, which improves work efficiency and saves time and effort.

[0018] Two limiting grooves 10 are provided on the base 1. Two bidirectional screws 16 are installed in the two limiting grooves 10 through bearings. An inner cavity 11 is provided on the base 1. Two rotating rods 12 are rotatably installed in the inner cavity 11. A motor 14 is installed in the inner cavity 11. Because of the installation of the motor 14, the output shaft of the motor 14 can drive the rotating rods 12 to rotate. The rotation of the rotating rods 12 drives the grooved wheel 13 to rotate. The rotation of the grooved wheel 13 drives the belt 15 to rotate, thereby driving the two bidirectional screws 16 connected to the rotating rods 12 to rotate. The rotation of the bidirectional screws 16 causes the two moving plates 18 to move towards each other. The movement of the moving plates 18 drives the fixed plate 17 to move until the two fixed plates 17 press against the distribution box body 7. This prevents the distribution box from shifting inside the sealed box 2 during the airtightness test and avoids loosening of the interface between the distribution box and the telescopic air pipe 22, thus improving the stability of the operation.

[0019] The output shaft of the motor 14 is connected to the rotating rod 12. Grooved wheels 13 are installed on the two rotating rods 12. A belt 15 is sleeved on the grooved wheel 13. The rotating rod 12 passes through the base 1 and is connected to the bidirectional screw 16. Two movable plates 18 are threadedly connected to the bidirectional screw 16. A fixed plate 17 is fixedly installed on the movable plate 18. The fixed plate 17 is slidably installed on the base 1. The power distribution box body 7 is placed on the base 1.

[0020] The working principle of this utility model is as follows: When working, the staff first places the distribution box body 7 to be tested on the base 1, and then opens the motor 14 installed in the inner cavity 11. The output shaft of the motor 14 drives the rotating rod 12 to rotate. The rotation of the rotating rod 12 causes the grooved wheel 13 installed on it to rotate. The rotation of the grooved wheel 13 drives the belt 15 sleeved on it to rotate, thereby driving the two bidirectional screws 16 connected to the rotating rod 12 to rotate. The rotation of the bidirectional screws 16 causes the two moving plates 18 threaded on them to move towards each other on the bidirectional screws 16. The movement of the moving plates 18 drives the fixed plate 17 fixedly installed on them to move on the surface of the base 1 until the two fixed plates 17 press the distribution box body 7 tightly. Then, the telescopic air pipe 22 is connected to the distribution box body 7, and then the sealing door 3 is closed through the door handle 4. During operation, when the distribution box body 7 is installed, the operator opens the vacuum box 5. The vacuum box 5 starts to extract the gas from the sealed box 2 through the suction cup 8 until the inside of the sealed box 2 reaches a near-vacuum state. Then the operator presses down the pressure plate 21, which drives the connecting rod 20 to move. The connecting rod 20 drives the piston 19 to move downward. The gas inside the cylinder 9 is compressed and moves downward, entering the distribution box body 7 through the telescopic air pipe 22.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A pressure-tightness detection device for a distribution box, comprising a base (1), characterized in that: A sealing box (2) is fixedly installed on the base (1). Two limiting grooves (10) are opened on the base (1). A bidirectional screw (16) is installed in the two limiting grooves (10) through bearings. An inner cavity (11) is opened on the base (1). Two rotating rods (12) are rotatably installed in the inner cavity (11). A motor (14) is installed in the inner cavity (11). The output shaft of the motor (14) is connected to the rotating rod (12). Grooved wheels (13) are installed on the two rotating rods (12). A belt (15) is sleeved on the grooved wheel (13). The rotating rod (12) passes through the base (1) and is connected to the bidirectional screw (16). Two moving plates (18) are threadedly connected to the bidirectional screw (16). A fixed plate (17) is fixedly installed on the moving plate (18). The fixed plate (17) is slidably installed on the base (1). A distribution box body (7) is placed on the base (1).

2. The distribution box pressure airtightness detection device according to claim 1, characterized in that: A vacuum box (5) is fixedly installed on the base (1), and a suction cup (8) is installed on the vacuum box (5). The suction cup (8) is located inside the sealed box (2).

3. The distribution box pressure airtightness detection device according to claim 1, characterized in that: A cylinder (9) is installed on the sealing box (2), and a test gauge (6) is installed on the sealing box (2).

4. The distribution box pressure airtightness detection device according to claim 3, characterized in that: A piston (19) is slidably installed inside the cylinder (9), the piston (19) is close to the inner wall of the cylinder (9), and a connecting rod (20) is installed on the piston (19).

5. The distribution box pressure airtightness detection device according to claim 4, characterized in that: The end of the connecting rod (20) is fixedly installed with a pressure plate (21) through the cylinder (9). The bottom of the cylinder (9) is connected to a telescopic air pipe (22). The telescopic air pipe (22) passes through the sealing box (2) and is connected to the main body of the distribution box (7).

6. The distribution box pressure airtightness detection device according to claim 1, characterized in that: The sealed box (2) is equipped with two sealed doors (3), and a door handle (4) is fixedly installed on the sealed door (3).

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