Hydraulic pipe air tightness detection device

Abstract

The utility model discloses a hydraulic pipe air tightness detection device, which belongs to the technical field of detection equipment and comprises a water tank, a rotating shaft is rotatably mounted at the top of the water tank, one end of the rotating shaft is connected with a motor mounted on the water tank, two bearing plates which are distributed in parallel are connected onto the outer wall of the rotating shaft, and a plurality of sealing cylinders are connected onto one bearing plate. A plurality of air inlet pipes corresponding to the sealing cylinders are installed on the other bearing plate, valves are installed on the air inlet pipes, an air blower is arranged on one side of the water tank and connected with the multiple air inlet pipes through air pipes, and a plurality of connecting rods fixedly connected to the rotating shaft are arranged between the two bearing plates. According to the utility model, the rotating shaft is connected between the two bearing plates, so that the sealing cylinder and the air inlet pipe can rotate synchronously when the airtightness of the hydraulic rubber pipe is detected, thereby ensuring the accuracy of detection.

Description

Technical Field

[0001] This utility model relates to a testing device, and more particularly to a hydraulic pipe airtightness testing device, belonging to the technical field of testing equipment. Background Technology

[0002] In various hydraulic systems, hydraulic hoses are required to transmit the base fluid. Since the inner cavity of the hydraulic hose needs to be under high pressure and negative pressure, its airtightness must be perfect during use; otherwise, hydraulic oil leakage will occur, rendering the hose unusable. Therefore, after the hydraulic hose is manufactured, its airtightness needs to be tested. A utility model patent with application number CN201920488948.4 discloses an airtightness testing device for hydraulic hose production, including a water tank, a top plate, a blower, a motor, a support plate, a sealing cylinder, a hydraulic cylinder, a limiting plate, and a ventilation pipe. The device is characterized by: the water tank being mounted on a support frame; the top plate being mounted on a vertical plate; the blower being mounted on the top plate; the motor being mounted on the vertical plate; the support plate being mounted on a transmission shaft; a mounting block one being provided on the sealing cylinder; the hydraulic cylinder being mounted on the vertical plate; the limiting plate being connected to the piston rod via a connecting ring; and a mounting block two being provided on the ventilation pipe. This invention features sealing rings on both the inner wall of the sealing cylinder and the outer wall of the sealing column. These sealing rings enhance the sealing between the outer wall of the sealing column and the inner wall of the hydraulic pipe, as well as between the inner wall of the sealing cylinder and the outer wall of the hydraulic pipe. This improves the sealing performance of the hydraulic pipe within the sealing cylinder and further enhances the accuracy of hydraulic pipe airtightness testing results.

[0003] However, the device still has the following problems: when the device is rotating, the front and back cannot rotate synchronously due to the hydraulic hose, which affects the detection efficiency. In addition, many hydraulic hoses are long, and the device is not convenient for detecting long hydraulic hoses.

[0004] Therefore, this utility model proposes a new solution. Utility Model Content

[0005] The main purpose of this utility model is to provide a hydraulic pipe airtightness testing device to overcome the shortcomings of the existing technology.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A hydraulic pipe airtightness testing device includes a water tank, a rotating shaft rotatably mounted on the top of the water tank, a motor connected to one end of the rotating shaft and mounted on the water tank, two parallel support plates connected to the outer wall of the rotating shaft, one of the support plates having multiple sealing cylinders connected to it, and the other support plate having multiple air inlet pipes corresponding to the sealing cylinders mounted on it, with valves mounted on the air inlet pipes, a blower provided on one side of the water tank, the blower being interconnected with the multiple air inlet pipes via air pipes, and multiple connecting rods fixedly connected to the rotating shaft between the two support plates.

[0008] Preferably, a pressure gauge located on the bearing plate is installed in the middle of the sealing cylinder, and an installation hole is provided in the middle of the sealing cylinder.

[0009] Preferably, a mounting frame is fixedly connected to the top of the water tank, and multiple fans are mounted on the mounting frame.

[0010] Preferably, a drain pipe is fixedly connected to the front of the water tank.

[0011] Preferably, an annular air box mounted on the support plate connects the plurality of air inlet pipes.

[0012] Preferably, the annular air box is connected to a ventilator that is interconnected with the air pipe.

[0013] Preferably, a winding tube is installed on the outer wall of the connecting rod.

[0014] Preferably, the end of the winding tube near the rotating shaft is provided with a limiting plate fixedly connected to the outer wall of the connecting rod.

[0015] Preferably, a nut is threaded onto the end of the connecting rod furthest from the pivot.

[0016] Preferably, both ends of the winding tube are fixedly connected to baffles.

[0017] The beneficial technical effects of this utility model are as follows: According to the hydraulic hose airtightness testing device of this utility model, by setting a rotating shaft connecting the two bearing plates, the sealing cylinder and the air inlet pipe can be rotated synchronously when the hydraulic hose is tested for airtightness, thereby ensuring the accuracy of the test. By setting a connecting rod, when testing a long hydraulic hose, the hydraulic hose can be wound around the connecting rod, which can support the hydraulic hose and prevent the hydraulic hose from falling off the sealing cylinder and the air inlet pipe, thereby improving the testing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;

[0019] Figure 2This is a schematic diagram of a water tank structure according to a preferred embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a connecting rod according to a preferred embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a connecting rod structure according to a preferred embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a ring-shaped air box structure according to a preferred embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of a winding tube structure according to a preferred embodiment of the present invention.

[0024] In the diagram: 1. Water tank; 2. Shaft; 3. Motor; 4. Support plate; 5. Sealing cylinder; 6. Air inlet pipe; 7. Valve; 8. Blower; 9. Connecting rod; 10. Pressure gauge; 11. Mounting bracket; 12. Fan; 13. Drain pipe; 14. Annular air box; 15. Vent pipe; 16. Spiral winding pipe; 17. Limiting plate; 18. Nut; 19. Baffle. Detailed Implementation

[0025] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0026] like Figures 1-6 As shown, the hydraulic pipe air tightness testing device provided in this embodiment includes a water tank 1. A rotating shaft 2 is rotatably mounted on the top of the water tank 1. One end of the rotating shaft 2 is connected to a motor 3 mounted on the water tank 1. Two parallel bearing plates 4 are connected to the outer wall of the rotating shaft 2. Multiple sealing cylinders 5 are connected to one of the bearing plates 4, and multiple air inlet pipes 6 corresponding to the sealing cylinders 5 are installed on the other bearing plate 4. Valves 7 are installed on the air inlet pipes 6. A blower 8 is provided on one side of the water tank 1. The blower 8 is connected to the multiple air inlet pipes 6 through an air pipe. Multiple connecting rods 9 are fixedly connected to the rotating shaft 2 between the two bearing plates 4. By connecting the rotating shaft 2 between the two bearing plates 4, the sealing cylinder 5 and the air inlet pipe 6 can be rotated synchronously when the hydraulic hose is tested for air tightness, thus ensuring the accuracy of the test. By setting the connecting rod 9, when testing a long hydraulic hose, the hydraulic hose can be wrapped around the connecting rod 9, which can support the hydraulic hose and prevent the hydraulic hose from falling off the sealing cylinder 5 and the air inlet pipe 6, thereby improving the testing efficiency.

[0027] In this embodiment, as Figure 1 and Figure 3As shown, a pressure gauge 10 is installed in the middle of the sealing cylinder 5, located on the support plate 4, and an installation hole is provided in the middle of the sealing cylinder 5. The pressure gauge 10 allows for direct observation of the inflation pressure applied to the hydraulic hose being tested.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, a mounting bracket 11 is fixedly connected to the top of the water tank 1, and multiple fans 12 are mounted on the mounting bracket 11. The fans 12 are used to dry the hydraulic hoses after testing.

[0029] In this embodiment, as Figure 1 and Figure 2 As shown, a drain pipe 13 is fixedly connected to the front of the water tank 1. The drain pipe 13 facilitates drainage when the water is dirty.

[0030] In this embodiment, as Figure 1 , Figure 3 and Figure 5 As shown, multiple air inlet pipes 6 are connected by annular air boxes 14 mounted on a support plate 4. Ventilation pipes 15, which are interconnected with air pipes, are connected to the annular air boxes 14. The annular air boxes 14, in conjunction with valves 7, distribute the incoming air, enabling the hydraulic hoses entering the water tank 1 to be checked for inflation.

[0031] In this embodiment, as Figure 3 , Figure 4 and Figure 6 As shown, a winding tube 16 is installed on the outer wall of the connecting rod 9. A limiting plate 17 is fixedly connected to the outer wall of the connecting rod 9 at one end of the winding tube 16 near the rotating shaft 2. A nut 18 is threadedly connected to the other end of the connecting rod 9 away from the rotating shaft 2. Baffles 19 are fixedly connected to both ends of the winding tube 16. The winding tube 16, limiting plate 17, and nut 18 facilitate the installation and removal of the winding tube 16. During use, the winding tube 16 can be removed beforehand, the hydraulic hose can be wound around the winding tube 16, and then installed on the connecting rod 9, improving work efficiency. The baffles 19 prevent detachment.

[0032] In this embodiment, as Figures 1-6 As shown in the figure, the working process of the hydraulic pipe airtightness testing device provided in this embodiment is as follows:

[0033] Step 1: Insert one end of the hydraulic hose into the sealing cylinder 5, and attach the other end to the air inlet pipe 6. Start the motor 3 to rotate.

[0034] Step 2: When the hydraulic hose enters the water tank 1 below the water surface, open the corresponding valve 7 and blower 8 to inflate it. Observe whether there are air bubbles on the water surface to determine whether there is a leak. After the test is completed, continue to rotate, the hydraulic hose leaves the water surface, and blower 12 dries it.

[0035] Step 3: When the hydraulic hose being tested is not too long, it can be directly wound around the connecting rod 9. When the hydraulic hose being tested is too long, it should be wound around the winding tube 16 and then installed on the connecting rod 9.

[0036] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A hydraulic pipe airtightness testing device, comprising a water tank (1), characterized in that, A rotating shaft (2) is rotatably mounted on the top of the water tank (1). One end of the rotating shaft (2) is connected to a motor (3) mounted on the water tank (1). Two parallel bearing plates (4) are connected to the outer wall of the rotating shaft (2). Multiple sealing cylinders (5) are connected to one of the bearing plates (4). Multiple air inlet pipes (6) corresponding to the sealing cylinders (5) are installed on the other bearing plate (4). Valves (7) are installed on the air inlet pipes (6). A blower (8) is provided on one side of the water tank (1). The blower (8) is connected to the multiple air inlet pipes (6) through an air pipe. Multiple connecting rods (9) are fixedly connected to the rotating shaft (2) between the two bearing plates (4).

2. The hydraulic pipe airtightness testing device according to claim 1, characterized in that, A pressure gauge (10) is installed in the middle of the sealing cylinder (5) on the bearing plate (4), and an installation hole is provided in the middle of the sealing cylinder (5).

3. The hydraulic pipe airtightness testing device according to claim 1, characterized in that, The top of the water tank (1) is fixedly connected to a mounting bracket (11), and multiple fans (12) are mounted on the mounting bracket (11).

4. The hydraulic pipe airtightness testing device according to claim 1, characterized in that, A drain pipe (13) is fixedly connected to the front of the water tank (1).

5. The hydraulic pipe airtightness testing device according to claim 1, characterized in that, An annular air box (14) mounted on the support plate (4) is connected between multiple air inlet pipes (6).

6. The hydraulic pipe airtightness testing device according to claim 5, characterized in that, The annular air box (14) is connected to a ventilation pipe (15) that is connected to the air pipe.

7. The hydraulic pipe airtightness testing device according to claim 1, characterized in that, A winding tube (16) is installed on the outer wall of the connecting rod (9).

8. The hydraulic pipe airtightness testing device according to claim 7, characterized in that, The winding tube (16) has a limiting plate (17) fixedly connected to the outer wall of the connecting rod (9) at one end near the rotating shaft (2).

9. A hydraulic pipe airtightness testing device according to claim 8, characterized in that, A nut (18) is threaded onto the end of the connecting rod (9) away from the rotating shaft (2).

10. A hydraulic pipe airtightness testing device according to claim 7, characterized in that, Both ends of the winding tube (16) are fixedly connected to baffles (19).

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