A kind of axle housing hydrostatic test device

Abstract

The application relates to the technical field of axle housing hydrostatic test, in particular to an axle housing hydrostatic leakage test device, which comprises a positioning table, a sliding support, a U-shaped seat, a rotating disc, a cavity plugging assembly and a water filling assembly, the sliding support is slidingly connected to the inner side of the positioning table, the U-shaped seat is fixedly connected to the top of the sliding support, and the rotating disc is rotatably connected to the top sides of the U-shaped seat. The axle housing hydrostatic leakage test device can realize real-time and accurate monitoring of the pressure value change in the test cavity during pressure maintaining by arranging a pressure gauge on the water passing branch pipe. The leakage rate can be quantitatively measured by measuring the pressure attenuation value in a unit time. The device is additionally provided with independent water passing branch pipes connected with axle housing interfaces, and each branch pipe is provided with a pressure monitor. During the test, the pressure gauge readings on different branch pipe circuits can be observed or compared to determine whether the leakage occurs in the main cavity or a specific branch pipe interface area, so that the test precision is improved.

Description

Technical Field

[0001] This application relates to the field of bridge housing hydrostatic testing technology, and in particular to a bridge housing hydrostatic leak test device. Background Technology

[0002] The axle housing hydrostatic leak test device is a specialized testing equipment used to simulate the working state of the axle housing filled with lubricating oil and detect whether there are leakage defects in its weld seams, housing base material, and mating surfaces with differential housing and half-shaft sleeves.

[0003] Chinese utility model patent CN221173760U discloses a rear axle housing airtightness testing machine. It utilizes a cylinder, mounting block, second slider, and air injection head in conjunction with these components. Activating the cylinder moves the mounting block downwards, positioning the air injection head at the rear axle housing air inlet. If there is a slight misalignment between the air injection head and the air inlet, the second slider can be used to adjust the position of the air injection head, ensuring it is aligned with the air inlet. Activating the lifting mechanism moves the water tank upwards, completely submerging the rear axle housing. Finally, gas is supplied through a pipe connector, entering the rear axle housing through the air injection head to test for leaks. If a leak is found, air bubbles will be generated at the leak point, allowing for rapid detection.

[0004] Regarding the aforementioned technologies, the inventors believe the following technical deficiencies exist that require improvement: The devices can only qualitatively determine whether a leak occurs, and cannot quantitatively measure the leakage rate. Furthermore, for minute, slow leaks, the resulting bubbles are tiny and sparse, easily overlooked by the naked eye, leading to missed detections. During the bubble rising process, especially at structurally complex bridge abutments, it is difficult to accurately determine the original location of the leak, making subsequent repairs challenging. On the other hand, the detection results rely entirely on the operator's sense of responsibility and visual fatigue, failing to achieve objective and uniform judgment standards. Utility Model Content

[0005] This application provides a bridge housing hydrostatic leak testing device to address the following technical problems: Traditional devices produce tiny, sparse bubbles for minor, slow leaks, which are easily overlooked by the naked eye, leading to missed detections. Furthermore, during the bubble rise process, especially in structurally complex bridge abutments, it is difficult to accurately determine the original location of the leak, making subsequent repairs challenging. On the other hand, the test results rely entirely on the operator's conscientiousness and visual fatigue, failing to achieve objective and uniform judgment standards.

[0006] This application provides a bridge housing hydrostatic leak test device, which adopts the following technical solution:

[0007] A bridge housing hydrostatic leak test device includes a positioning platform, a sliding bracket, a U-shaped seat, a rotating disk, a cavity sealing assembly, and a water filling assembly. The sliding bracket is slidably connected to the inner side of the positioning platform, the U-shaped seat is fixedly connected to the top of the sliding bracket, the rotating disk is rotatably connected to both sides of the top of the U-shaped seat, the cavity sealing assembly is installed on the outer side of the rotating disk, and the water filling assembly is installed on the outer side of the positioning platform.

[0008] In one feasible technical solution of this application, the cavity sealing assembly includes a water supply branch pipe, a flange connection plate, a pressure gauge and a one-way valve. The water supply branch pipe is fixedly connected to the outside of the rotating disc. The flange connection plate is connected to one end of the water supply branch pipe by bolts. The one-way valve is sleeved on the outside of the water supply branch pipe. The pressure gauge is sleeved on the side of the water supply branch pipe near the one-way valve and is used to detect the water pressure at each interface of the bridge housing.

[0009] In one feasible technical solution of this application, the water filling assembly includes a water storage bottle, a connecting hose, a booster pump, a direct connecting pipe, and a sliding base. The sliding base is slidably connected to the top side of the positioning platform. The two ends of the connecting hose are respectively connected to the output end of the water storage bottle and the output end of the booster pump. The booster pump is installed on the top of the sliding base. The direct connecting pipe is fixedly connected to the outside of the output end of the booster pump and is used to connect to the main pipeline of the bridge housing.

[0010] In one feasible technical solution of this application, the connection between the positioning platform and the sliding base is further provided with a straight sliding track and a sliding groove whose sizes are adapted to each other.

[0011] In one feasible technical solution of this application, a sealing ring is also provided on the inner side of the interface connection between the flange connecting plate and the bridge housing.

[0012] In one feasible technical solution of this application, a DC motor, a threaded rod, and a linear shaft are further provided on the inner side of the positioning stage. The DC motor is installed on the outer bottom of the positioning stage, the threaded rod is fixedly connected to the outer side of the output end of the DC motor, and the outer thread surface of the threaded rod is screwed to the bottom of the sliding bracket. The linear shaft passes through the interior of the sliding bracket and is fixedly connected to the inner surface of the positioning stage.

[0013] In one feasible technical solution of this application, the bottom of the sliding bracket is respectively provided with threaded grooves and through holes that are adapted to the dimensions of the threaded rod and the linear shaft.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] This device, by installing pressure gauges on the water supply branch pipes, can monitor the pressure changes within the test chamber in real time and with high accuracy during the pressure holding period. By measuring the pressure decay per unit time, the leakage rate can be quantitatively measured. Furthermore, the device includes independent water supply branch pipes connecting to each bridge housing interface, and each branch pipe can be equipped with pressure monitoring. During testing, by observing or comparing the pressure gauge readings on different branch pipe circuits, it is possible to preliminarily determine whether the leak occurs in the main chamber or a specific branch pipe interface area. This provides operators with a clear direction for repairs, avoiding the significant time and effort wasted in blindly searching for leaks, thus greatly improving maintenance efficiency. The sliding bracket, U-shaped seat, and rotating disc enable the chamber sealing assembly to have multi-degree-of-freedom adjustment capabilities, adapting to bridge housing interfaces of different specifications and angles, improving the equipment's versatility. Sealing rings are installed at the flange connection points to the interfaces, ensuring the sealing of all connection points during testing, preventing misjudgments due to leakage within the device itself, and guaranteeing the accuracy and reliability of the test results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the bridge housing water pressure leak test device according to an embodiment of this application.

[0018] Figure 2 This is a top view of the positioning platform in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of the water-filling component in the embodiments of this application.

[0020] Figure 4 This is a schematic diagram of the cavity sealing assembly in an embodiment of this application.

[0021] Figure 5 yes Figure 4 Enlarged view of section A.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Positioning platform; 2. Sliding bracket; 3. U-shaped base; 4. Rotating disk;

[0024] 5. Cavity sealing assembly; 51. Water supply branch pipe; 52. Flange connection plate; 53. Pressure gauge; 54. Check valve;

[0025] 6. Water filling assembly; 61. Water storage bottle; 62. Connecting hose; 63. Booster pump; 64. Straight connection pipe; 65. Sliding base;

[0026] 7. Straight slide rail; 8. Slide groove; 9. Sealing ring; 10. DC motor; 11. Threaded rod; 12. Linear shaft; 13. Threaded groove; 14. Through hole. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a bridge housing hydrostatic leak test apparatus. (Refer to...) Figures 1 to 5 The bridge housing water pressure leak test device includes a positioning platform 1, a sliding bracket 2, a U-shaped seat 3, a rotating disk 4, a cavity sealing assembly 5, and a water filling assembly 6. The sliding bracket 2 is slidably connected to the inner side of the positioning platform 1, the U-shaped seat 3 is fixedly connected to the top of the sliding bracket 2, the rotating disk 4 is rotatably connected to the top two sides of the U-shaped seat 3, the cavity sealing assembly 5 is installed on the outer side of the rotating disk 4, and the water filling assembly 6 is installed on the outer side of the positioning platform 1.

[0033] The cavity sealing assembly 5 includes a water supply branch pipe 51, a flange connection plate 52, a pressure gauge 53, and a one-way valve 54. The water supply branch pipe 51 is fixedly connected to the outside of the rotating disk 4. The flange connection plate 52 is connected to one end of the water supply branch pipe 51 by bolts. The one-way valve 54 is sleeved on the outside of the water supply branch pipe 51. The pressure gauge 53 is sleeved on the side of the water supply branch pipe 51 near the one-way valve 54 and is used to detect the water pressure at each interface of the bridge housing.

[0034] As the water pressure continues to rise, pressure gauges 53 on each branch line display the current pressure value in real time. When the pressure reaches the preset test value, the pressurization stops and the valves are closed, and the system enters a pressure-holding state.

[0035] The water filling assembly 6 includes a water storage bottle 61, a connecting hose 62, a booster pump 63, a straight connecting pipe 64, and a sliding base 65. The sliding base 65 is slidably connected to the top side of the positioning platform 1. The two ends of the connecting hose 62 are respectively connected to the output end of the water storage bottle 61 and the output end of the booster pump 63. The booster pump 63 is installed on the top of the sliding base 65. The straight connecting pipe 64 is fixedly connected to the outside of the output end of the booster pump 63 and is used to connect to the main pipeline of the bridge housing.

[0036] If the pressure gauge 53 reading on a specific branch pipe is found to drop abnormally while the pressure on other pipes remains stable, it can be directly determined that the leak occurred in the bridge housing interface area corresponding to that branch pipe, which greatly facilitates subsequent accurate repairs.

[0037] The connection between the positioning platform 1 and the sliding base 65 is also provided with a straight sliding track 7 and a sliding groove 8 that are adapted to each other in size.

[0038] A sealing ring 9 is also provided on the inner side of the interface between the flange connecting plate 52 and the bridge housing.

[0039] The spatial angle of the cavity sealing assembly 5 is adjusted by the U-shaped seat 3 and the rotating disk 4, so that the flange connecting plate 52 precisely fits the interfaces of the bridge housing. After tightening, the sealing ring 9 on its inner side ensures that an initial seal is formed at the interface. At this time, the interfaces are interconnected through the water supply branch pipe 51, forming a complete pressure test chamber.

[0040] The inner side of the positioning platform 1 is also provided with a DC motor 10, a threaded rod 11 and a linear shaft 12. The DC motor 10 is installed on the bottom outer side of the positioning platform 1. The threaded rod 11 is fixedly connected to the outer side of the output end of the DC motor 10, and the outer thread surface of the threaded rod 11 is screwed to the bottom of the sliding bracket 2. The linear shaft 12 passes through the interior of the sliding bracket 2 and is fixedly connected to the inner surface of the positioning platform 1.

[0041] The bottom of the sliding bracket 2 is provided with threaded grooves 13 and through holes 14 that are adapted to the dimensions of the threaded rod 11 and the linear shaft 12, respectively.

[0042] The general process of using the bridge housing hydrostatic leak test device in this application embodiment is as follows:

[0043] The bridge housing body to be tested is placed on the positioning platform 1 and initially fixed. The DC motor 10 is started, driving the threaded rod 11 to rotate. The sliding bracket 2, meshing with the threaded rod 11, moves smoothly along the inner side of the positioning platform 1 under the guidance of the linear shaft 12, thereby delivering the entire sealing system to the interfaces at both ends of the bridge housing. The U-shaped seat 3 at the top of the sliding bracket 2 and the rotating disks 4 on both sides allow the cavity sealing assembly 5 to be adjusted with multiple degrees of freedom to precisely align with the interfaces on the left and right sides of the bridge housing. The flange connecting plate 52 in the cavity sealing assembly 5 is connected to the bridge housing interface and tightened with bolts. The sealing ring 9 on its inner side ensures a leak-free seal at the connection. The water branch pipe 51 connects the internal parts of each interface; the one-way valve 54 prevents backflow of water; and the pressure gauge 53 is used to monitor the water pressure of this branch in real time. Push the sliding base 65 of the water filling component 6 so that it moves along the straight slide rail 7 and slide groove 8 on the positioning platform 1, connecting the straight connecting pipe 64 to the main pipeline of the bridge housing. Start the booster pump 63, which draws water from the water storage bottle 61 and injects pressurized water into the bridge housing through the connecting hose 62 and the straight connecting pipe 64. During the pressure holding phase, the operator can quantitatively determine whether there is a leak at the corresponding interface and the severity of the leak by observing the changes in the readings of each pressure gauge 53.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bridge shell hydrostatic leak test device, characterized in that, The device includes a positioning platform (1), a sliding bracket (2), a U-shaped seat (3), a rotating disk (4), a cavity sealing assembly (5), and a water filling assembly (6). The sliding bracket (2) is slidably connected to the inner side of the positioning platform (1), the U-shaped seat (3) is fixedly connected to the top of the sliding bracket (2), the rotating disk (4) is rotatably connected to the top two sides of the U-shaped seat (3), the cavity sealing assembly (5) is installed on the outer side of the rotating disk (4), and the water filling assembly (6) is installed on the outer side of the positioning platform (1).

2. The bridge shell hydrostatic leak test device according to claim 1, characterized in that, The cavity sealing assembly (5) includes a water supply branch pipe (51), a flange connection plate (52), a pressure gauge (53), and a one-way valve (54). The water supply branch pipe (51) is fixedly connected to the outside of the rotating disc (4). The flange connection plate (52) is connected to one end of the water supply branch pipe (51) by bolts. The one-way valve (54) is sleeved on the outside of the water supply branch pipe (51). The pressure gauge (53) is sleeved on the side of the water supply branch pipe (51) near the one-way valve (54) and is used to detect the water pressure at each interface of the bridge housing.

3. The bridge shell hydrostatic leak test device according to claim 1, characterized in that, The water filling assembly (6) includes a water storage bottle (61), a connecting hose (62), a booster pump (63), a straight connecting pipe (64), and a sliding base (65). The sliding base (65) is slidably connected to the top side of the positioning platform (1). The two ends of the connecting hose (62) are respectively connected to the output end of the water storage bottle (61) and the output end of the booster pump (63). The booster pump (63) is installed on the top of the sliding base (65). The straight connecting pipe (64) is fixedly connected to the outside of the output end of the booster pump (63) and is used to connect to the main pipeline of the bridge housing.

4. The bridge housing hydrostatic leak test device according to claim 3, characterized in that, The connection between the positioning platform (1) and the sliding base (65) is also provided with a straight sliding track (7) and a sliding groove (8) of mutually compatible size.

5. The bridge housing hydrostatic leak test device according to claim 2, characterized in that, A sealing ring (9) is also provided on the inner side of the interface between the flange connecting plate (52) and the bridge housing.

6. The bridge housing hydrostatic leak test apparatus according to claim 1, characterized in that, The positioning platform (1) is also provided with a DC motor (10), a threaded rod (11) and a linear shaft (12) on its inner side. The DC motor (10) is installed on the bottom outer side of the positioning platform (1). The threaded rod (11) is fixedly connected to the outer side of the output end of the DC motor (10), and the outer thread surface of the threaded rod (11) is screwed to the bottom of the sliding bracket (2). The linear shaft (12) passes through the interior of the sliding bracket (2) and is fixedly connected to the inner surface of the positioning platform (1).

7. The bridge housing hydrostatic leak test apparatus according to claim 6, characterized in that, The bottom of the sliding bracket (2) is provided with threaded grooves (13) and through holes (14) that are adapted to the dimensions of the threaded rod (11) and the linear shaft (12).

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