Steel wheel rim airtightness detection device

Abstract

The utility model discloses a steel wheel rim air tightness detection device, which comprises a detection support frame, a lower support bottom plate fixedly mounted on the detection support frame, a lower sealing mold mounted on the lower support bottom plate, inflation ports symmetrically arranged on the lower sealing mold, and pressure-maintaining inflation assemblies mounted below the lower support bottom plate and matched with the inflation ports. A lower sealing mold is arranged on the top of the detection supporting frame, a downward pressing sealing assembly is arranged at one end of the top of the detection supporting frame, an upper sealing mold is arranged below the downward pressing sealing assembly, the upper sealing mold is located over the lower sealing mold, and watering detection assemblies extending to the two sides of the lower sealing mold are arranged in the detection supporting frame. The upper die and the lower die do not need to be manually and frequently installed, a large amount of time is saved, a pool does not need to be used, space occupation of equipment is reduced, and the air tightness of the rim can be observed more directly.

Description

Technical Field

[0001] This utility model relates to the field of wheel rim testing technology, specifically to a device for testing the airtightness of steel wheel rims. Background Technology

[0002] During the processing of steel wheel rims, the initial material is sheet metal. After three processes—rolling, butt welding, and slag removal—defects such as micro-cracks and bubbles may occur at the weld seam of the rim. After subsequent processes such as rolling and expansion, the rim undergoes significant plastic deformation. These defects can easily develop into through cracks. Through cracks cause air leakage after the wheel is inflated, affecting product quality and reputation. Therefore, it is necessary to conduct air tightness testing on the rim.

[0003] In existing technologies, the airtightness testing of wheel rims typically employs the pneumatic bubbling method. The working principle of this method is as follows: workers manually press the inner and outer ends of the wheel rim together using upper and lower molds, creating a sealed chamber between the molds and the rim. Gas at a certain pressure is then introduced into this chamber, and the entire rim is immersed in a water tank. The airtightness is determined by observing whether bubbles emerge from the water. However, because the pneumatic bubbling method involves manually installing the molds and then submerging the rim in the water, it suffers from low testing efficiency, wastes manpower, and has high costs. Furthermore, the water tank requires a large space, placing high demands on the factory facilities.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a device for testing the air tightness of steel wheel rims.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a steel wheel rim air tightness testing device, comprising a testing support frame, a lower support base plate fixedly installed on the testing support frame, a lower sealing mold installed on the lower support base plate, air inlets symmetrically arranged on the lower sealing mold, a pressure-holding and inflation assembly cooperating with the air inlets installed below the lower support base plate, a lower pressure sealing assembly installed at one end of the top of the testing support frame, an upper sealing mold installed below the lower pressure sealing assembly, and the upper sealing mold being located directly above the lower sealing mold, and a water spraying testing assembly extending to both sides of the lower sealing mold is provided inside the testing support frame.

[0007] Preferably, the pressure-holding inflation assembly includes an open-type outer shell, which is fixed to the bottom of the lower support base plate. Several air inlets are provided on one side of the open-type outer shell. An air pump is installed inside the open-type outer shell. The output end of the air pump is connected to the main inflation pipe, and an electric control valve is installed on the main inflation pipe.

[0008] Preferably, the top two sides of the main inflation tube are connected to secondary L-shaped inflation pipes. The secondary L-shaped inflation pipes pass through the lower support base plate and are connected to the corresponding inflation ports. A support sleeve is fixedly fitted on the outer side of the secondary L-shaped inflation pipes, and the support sleeve is fixed in the open outer shell by a support rod.

[0009] Preferably, the downward sealing assembly includes a fixed mounting plate with symmetrically arranged mounting grooves. The fixed mounting plate is fixed to the testing support frame through the mounting grooves. A hydraulic cylinder is installed on the top of the fixed mounting plate, and the output end of the hydraulic cylinder is connected to a lower cross connecting plate. A sealing mold is fixedly installed on the bottom of the lower cross connecting plate. Fixed blocks are symmetrically arranged on the fixed mounting plate, and guide posts that movably penetrate the fixed mounting plate and the fixed blocks are symmetrically arranged on the lower cross connecting plate.

[0010] Preferably, the water spraying detection component includes a water storage tank, with an inlet pipe connected to the top end of the water storage tank, a miniature submersible pump installed at the bottom of the water storage tank, a main pipe connected to the output end of the miniature submersible pump, and L-shaped secondary pipes symmetrically arranged at the ends of the main pipe. The L-shaped secondary pipes extend to the outside of the water storage tank, and several spray nozzles are provided on the inner side of the L-shaped secondary pipes.

[0011] Preferably, the bottom of the testing support frame is fixedly installed with a lower fixed base, and the bottom of the lower fixed base is equipped with four sets of support legs, and the bottom of each support leg is equipped with a support pad.

[0012] This utility model provides a device for testing the air tightness of steel wheel rims, with the following advantages:

[0013] By fixing a lower support plate to the testing support frame, the installation and fixing of the lower sealing mold is convenient. The air inlet, in conjunction with the pressure-holding and inflation component, enables inflation after the rim is sealed. The lower sealing component drives the upper sealing mold to press down, placing the rim at the center of the lower sealing mold. After the upper and lower sealing molds seal the rim, inflation can begin. After inflation and pressure holding, the water spraying testing component evenly sprays water around the rim. The airtightness of the rim is determined by observing whether air bubbles are generated. This utility model has a simple structure and is easy to use. It eliminates the need for frequent manual installation of the upper and lower molds, saving a lot of time. It also eliminates the need for a water tank, reducing the space occupied by the equipment, and allows for more direct observation of the rim's airtightness. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of a steel wheel rim airtightness testing device according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the pressure-holding and inflation component in a steel wheel rim air tightness testing device according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the pressure sealing assembly in a steel wheel rim airtightness testing device according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the water spraying detection component in a steel wheel rim airtightness testing device according to an embodiment of the present utility model.

[0019] In the picture:

[0020] 1. Testing support frame; 2. Lower support base plate; 3. Lower sealing mold; 4. Inflation port; 5. Pressure holding and inflation assembly; 6. Lower pressure sealing assembly; 7. Upper sealing mold; 8. Sprinkling detection assembly; 9. Open-type outer shell; 10. Air inlet; 11. Air pump; 12. Main inflation pipe; 13. Electrically controlled valve; 14. Secondary L-shaped inflation pipe; 15. Support sleeve; 16. Fixed mounting plate; 17. Hydraulic cylinder; 18. Lower cross connecting plate; 19. Mounting groove; 20. Fixing block; 21. Guide column; 22. Water storage tank; 23. Water inlet pipe; 24. Miniature submersible pump; 25. Main pipe; 26. L-shaped secondary pipe; 27. Spray nozzle; 28. Lower fixed base; 29. ​​Support pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a steel wheel rim airtightness testing device, including a testing support frame 1, a lower support base plate 2 fixedly installed on the testing support frame 1, and a lower sealing mold 3 installed on the lower support base plate 2. The lower support base plate 2, fixedly installed on the testing support frame 1, facilitates the installation and fixation of the lower sealing mold 3. The lower sealing mold 3 has symmetrically arranged inflation ports 4. A pressure-holding inflation assembly 5, cooperating with the inflation ports 4, is installed below the lower support base plate 2. The inflation ports 4, in conjunction with the pressure-holding inflation assembly 5, enable inflation after the rim is sealed. A [missing information - likely a device or component] is installed at the top end of the testing support frame 1. The lower sealing assembly 6 is installed below the lower sealing assembly 6, and the upper sealing mold 7 is located directly above the lower sealing mold 3. The detection support frame 1 is equipped with a water spray detection assembly 8 extending to both sides of the lower sealing mold 3. The lower sealing assembly 6 drives the upper sealing mold 7 to press down and places the wheel rim at the center of the lower sealing mold 3. After the upper sealing mold 7 and the lower sealing mold 3 seal the wheel rim, it can be inflated. After inflation and pressure holding, the water spray detection assembly 8 is used to evenly spray water around the wheel rim. The air tightness of the wheel rim is determined by observing whether there are bubbles.

[0023] In one embodiment, please refer to the appendix to the specification. Figure 2 As shown, the pressure-holding inflation assembly 5 includes an open-type outer shell 9, which is fixed to the bottom of the lower support base plate 2. Several air inlets 10 are provided on one side of the open-type outer shell 9. An air pump 11 is installed inside the open-type outer shell 9. The output end of the air pump 11 is connected to a main inflation pipe 12, and an electric control valve 13 is installed on the main inflation pipe 12. Secondary L-shaped inflation pipes 14 are connected to both sides of the top end of the main inflation pipe 12. The secondary L-shaped inflation pipes 14 penetrate the lower support base plate 2 and are connected to corresponding inflation ports 4. A support sleeve 15 is fixedly fitted over the secondary L-shaped inflation pipes 14, and the support sleeve 15 is fixed in the open-type outer shell 9 by a support rod. Air is drawn from the outside by the air pump 11, enters the two secondary L-shaped inflation pipes 14 through the main inflation pipe 12, and then inflates the rim through the inflation ports 4. After inflation, the air pump 11 is turned off, and the main inflation pipe 12 is closed by the electric control valve 13, thus achieving pressure holding.

[0024] In one embodiment, please refer to the appendix to the specification. Figure 3As shown, the downward sealing assembly 6 includes a fixed mounting plate 16 with symmetrical mounting grooves 19. The fixed mounting plate 16 is fixed to the detection support frame 1 through the mounting grooves 19. A hydraulic cylinder 17 is mounted on the top of the fixed mounting plate 16, and the output end of the hydraulic cylinder 17 is connected to a lower cross connecting plate 18. An upper sealing mold 7 is fixedly mounted on the bottom of the lower cross connecting plate 18. Fixed blocks 20 are symmetrically arranged on the fixed mounting plate 16, and guide posts 21 are symmetrically arranged on the lower cross connecting plate 18, which movably penetrate the fixed mounting plate 16 and the fixed blocks 20. The hydraulic cylinder 17 drives the lower cross connecting plate 18 to descend, thereby causing the upper sealing mold 7 to descend and achieve sealing with the top surface of the rim. The guide posts 21 improve the stability during the lifting process.

[0025] In one embodiment, please refer to the appendix to the specification. Figure 4 As shown, the water spray detection component 8 includes a water storage tank 22. A water inlet pipe 23 is connected to the top end of the water storage tank 22. A miniature submersible pump 24 is installed at the bottom of the water storage tank 22. The output end of the miniature submersible pump 24 is connected to a main pipe 25. An L-shaped secondary pipe 26 is symmetrically arranged at the end of the main pipe 25, extending to the outside of the water storage tank 22. Several spray nozzles 27 are provided on the inner side of the L-shaped secondary pipe 26. Water is drawn from the water storage tank 22 by the miniature submersible pump 24, transported through the main pipe 25 to the L-shaped secondary pipe 26, and finally sprayed out through the spray nozzles 27. The spray nozzles 27 have a flat conical structure, forming a water curtain that evenly covers the entire wheel rim. The water inlet pipe 23 facilitates the filling of the water storage tank 22.

[0026] In one embodiment, please refer to the appendix to the specification. Figure 1 As shown, a lower fixed base 28 is fixedly installed at the bottom of the testing support frame 1. Four sets of support legs are installed at the bottom of the lower fixed base 28, and each support leg has a support pad 29 installed at its bottom. The lower fixed base 28 and the support pads 29 work together to support the testing support frame 1.

[0027] In practical applications, the lower support base plate 2 is fixedly installed on the testing support frame 1, which facilitates the installation and fixing of the lower sealing mold 3. The air inlet 4, together with the pressure-holding and air-inflating component 5, enables the air-inflating work after the rim is sealed. The upper sealing mold 7 is pressed down by the lower sealing component 6, and the rim is placed at the center of the lower sealing mold 3. After the upper sealing mold 7 and the lower sealing mold 3 seal the rim, air-inflating can be carried out. After the air-inflating and pressure-holding is completed, water is evenly sprayed around the rim using the water-spraying testing component 8. The air tightness of the rim is determined by observing whether air bubbles are generated. This utility model has a simple structure and is easy to use. It does not require frequent manual installation of the upper and lower molds, saving a lot of time. It also does not require the use of a water tank, reducing the space occupied by the equipment, and allows for more direct observation of the air tightness of the rim.

[0028] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steel wheel rim air tightness testing device, characterized by, The system includes a testing support frame (1), a lower support base plate (2) fixedly installed on the testing support frame (1), a lower sealing mold (3) installed on the lower support base plate (2), an air inlet (4) symmetrically provided on the lower sealing mold (3), a pressure-holding and inflation assembly (5) that cooperates with the air inlet (4) installed below the lower support base plate (2), a lower pressure sealing assembly (6) installed at one end of the top of the testing support frame (1), an upper sealing mold (7) installed below the lower pressure sealing assembly (6), and the upper sealing mold (7) located directly above the lower sealing mold (3). A water spraying testing assembly (8) extending to both sides of the lower sealing mold (3) is provided inside the testing support frame (1).

2. The steel wheel rim air tightness testing device according to claim 1, wherein, The pressure-holding inflation assembly (5) includes an open-type outer shell (9), which is fixed to the bottom of the lower support base plate (2). Several air inlets (10) are provided on one side of the open-type outer shell (9). An air pump (11) is installed inside the open-type outer shell (9). The output end of the air pump (11) is connected to the main inflation pipe (12), and an electric control valve (13) is installed on the main inflation pipe (12).

3. The apparatus for detecting air tightness of a steel wheel rim according to claim 2, wherein The top two sides of the main inflation tube (12) are connected to the secondary L-shaped inflation tubes (14). The secondary L-shaped inflation tubes (14) pass through the lower support base plate (2) and are connected to the corresponding inflation port (4). The secondary L-shaped inflation tubes (14) are fixedly fitted with a support sleeve (15). The support sleeve (15) is fixed in the open outer shell (9) by a support rod.

4. The apparatus for detecting air tightness of a steel wheel rim according to claim 3, wherein The pressure sealing assembly (6) includes a fixed mounting plate (16), on which mounting grooves (19) are symmetrically provided. The fixed mounting plate (16) is fixed to the detection support frame (1) through the mounting grooves (19). A hydraulic cylinder (17) is installed on the top of the fixed mounting plate (16). The output end of the hydraulic cylinder (17) is connected to a lower cross connecting plate (18). A sealing mold (7) is fixedly installed on the bottom of the lower cross connecting plate (18). Fixing blocks (20) are symmetrically provided on the fixed mounting plate (16). Guide posts (21) that flexibly penetrate the fixed mounting plate (16) and the fixing blocks (20) are symmetrically provided on the lower cross connecting plate (18).

5. The apparatus for detecting air tightness of a steel wheel rim according to claim 4, wherein The water spray detection component (8) includes a water storage tank (22), with an inlet pipe (23) connected to the top end of the water storage tank (22). A miniature submersible pump (24) is installed at the bottom of the water storage tank (22). The output end of the miniature submersible pump (24) is connected to a main pipe (25). An L-shaped secondary pipe (26) is symmetrically provided at the end of the main pipe (25). The L-shaped secondary pipe (26) extends to the outside of the water storage tank (22). Several spray nozzles (27) are provided on the inner side of the L-shaped secondary pipe (26).

6. The apparatus for detecting air tightness of a steel wheel rim according to claim 5, wherein The bottom of the test support frame (1) is fixedly installed with a lower fixed base (28), and the bottom of the lower fixed base (28) is equipped with four sets of support legs, and the bottom of each support leg is equipped with a support pad (29).

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