A device for testing the water immersion air tightness of wheel hubs in new energy vehicles

Abstract

This utility model discloses a water immersion airtightness testing device for new energy vehicle wheel hubs, including a testing frame on which an airtightness testing mechanism is mounted. The airtightness testing mechanism includes a liftable testing water tank assembly; it also includes a wheel hub inflation testing assembly for positioning the wheel hub, the wheel hub inflation testing assembly including a rotatable rotating frame structure, the rotating frame structure including a lower turntable for placing the wheel hub, and an upper turntable positioned above the lower turntable; it also includes a drive structure mounted on the upper turntable; the wheel hub inflation testing assembly also includes a liftable inflation seat, which, during testing, presses against the top surface of the wheel hub. This structure enables the wheel hub's positioning, inflation, water immersion, and rotation observation to be completed in one continuous operation during the wheel hub airtightness testing process. This device not only has high testing efficiency but is also convenient to operate, allowing operators to easily observe the wheel hub's condition under water immersion conditions from all angles.

Description

Technical Field

[0001] This utility model belongs to the field of wheel hub air tightness testing technology, and in particular relates to a water immersion air tightness testing device for new energy vehicle wheel hubs. Background Technology

[0002] New energy vehicles are a new type of energy-saving vehicle that uses electricity as its energy source, offering numerous advantages such as energy conservation, environmental protection, and economy. The wheel hub is a key component of new energy vehicles, made from materials such as aluminum alloy. Subsequently, tubeless tires are directly installed onto the tire bead grooves on the wheel hub, and then pressurized gas is injected into the tire.

[0003] Therefore, the airtightness of the tire and rim determines the safe and stable operation of the wheel. Specifically, during the manufacturing process, after the rim is formed, an airtightness test is required. The current method for airtightness testing involves sealing the top and bottom of the rim and injecting gas at a certain pressure, then testing it by immersion in water. If the airtightness of the rim is not high, the air bubbles in the water during the immersion test indicate that the rim's airtightness is insufficient.

[0004] However, due to the irregular shape of wheel hubs, effectively sealing, inflating, and immersing them in water during airtightness testing has become one of the challenges in wheel hub inspection. This is because the testing process requires multiple operations, including sealing, inflating, and immersing the wheel hub in water. Therefore, the entire testing process is quite complex. Without a highly efficient testing device, completing the inspection of a set of wheel hubs is not only time-consuming and labor-intensive, but also fails to meet the efficiency requirements of mass production in workshops.

[0005] Therefore, in actual production, if a wheel hub airtightness testing device with high testing efficiency, simple and convenient operation, and high testing accuracy is developed and designed to meet the needs of mass production, the production testing efficiency of wheel hubs will be greatly improved. Utility Model Content

[0006] Based on the above background, the purpose of this utility model is to provide a device for testing the water immersion air tightness of wheel hubs in new energy vehicles.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A water immersion air tightness testing device for a new energy vehicle wheel hub includes a testing frame, on which an air tightness testing mechanism is installed. The air tightness testing mechanism includes a test water tank assembly that can be lifted and lowered. It also includes a wheel hub inflation detection component for positioning the wheel hub. The wheel hub inflation detection component includes a rotatable rotating frame structure, which includes a lower rotating platform for placing the wheel hub and an upper rotating platform positioned above the lower rotating platform. It also includes the drive structure mounted on the upper turntable; The wheel hub inflation testing component also includes an inflatable seat that can be raised and lowered. During the testing process, the inflatable seat cover is pressed against the top surface of the wheel hub.

[0008] Preferably, the top of the lower turntable is fixedly connected to a plurality of long connecting columns, which are fixedly connected to the bottom of the upper turntable.

[0009] Preferably, the top center of the upper turntable is fixedly connected to a rotating shaft that is rotatably connected to the top of the frame, and the drive structure includes a motor and a gear structure, wherein the motor transmits power to the rotating shaft through the gear structure.

[0010] Preferably, the gear structure includes a first gear fixedly installed at the top of the rotating shaft, a first gear shaft rotatably connected to the top of the frame, and a second gear meshing with the first gear fixedly connected to the first gear shaft; It also includes a third gear fixedly connected to the first gear shaft, a second gear shaft fixedly connected to the frame, a fourth gear fixedly connected to the second gear shaft to mesh with the third gear, and a drive gear fixedly connected to the output shaft of the motor to mesh with the fourth gear.

[0011] Preferably, a first cylinder for pushing the inflatable seat to rise and fall is fixedly connected to the top of the inflatable seat, and the cylinder barrel of the first cylinder is fixedly installed at the bottom center of the upper turntable; The bottom of the inflatable base has an inflation chamber, and the top of the inflatable base is connected to an inflation hose, which is connected to an air pump.

[0012] Preferably, the detection water tank assembly includes a water tank located below the lower turntable; The bottom of the water tank is fixedly connected to a second cylinder that pushes the water tank up and down.

[0013] Preferably, a support frame for supporting the water tank is fixedly connected to the frame, and slide rails are fixedly connected to both sides of the bottom of the water tank, with the slide rails slidably connected to the support frame.

[0014] Preferably, the bottom of the cylinder of the second cylinder is fixedly connected to a mounting base, which is fixedly installed on the ground.

[0015] Preferably, the top of the lower turntable is provided with a plastic pad for placing the wheel hub.

[0016] This utility model has the following beneficial effects: 1. This utility model discloses a wheel hub air tightness testing device with high processing efficiency and high testing accuracy. It realizes the positioning, inflation, water immersion, and rotation observation of the wheel hub in one go during the testing process. The device is not only highly efficient, but also convenient to operate, allowing operators to observe the wheel hub condition under water immersion conditions from all angles.

[0017] 2. During the operation, the wheel hub is first positioned by the wheel hub inflation detection component and filled with detection gas. Then, the detection water tank component is lifted to immerse the wheel hub in water. During the detection process, if the air tightness of the wheel hub does not meet the requirements, a large number of bubbles will be generated in the water.

[0018] Meanwhile, the aforementioned wheel hub inflation detection assembly includes a rotatable rotating frame structure, which includes a lower turntable for placing the wheel hub and an upper turntable positioned above the lower turntable. It also includes a drive structure mounted on the upper turntable.

[0019] During operation, the rotating frame structure rotates the wheel hub submerged in water. As it rotates, each side of the wheel hub faces the operator. This 360-degree rotation makes it easier for the operator to spot the location of air bubbles generated by the wheel hub, especially small, inconspicuous bubbles.

[0020] This rotational testing method allows operators to observe the characteristics of wheel hub air tightness testing under water immersion conditions from all angles during the testing process, such as the observation of air bubbles. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is one of the structural schematic diagrams of the gear structure driving the rotating frame structure to rotate in the embodiments of this utility model; Figure 3 This is the second schematic diagram of the gear structure driving the rotating frame structure to rotate in the embodiment of this utility model; Figure 4 This is the third schematic diagram of the gear structure driving the rotating frame structure to rotate in the embodiments of this utility model; Figure 5 This is a schematic diagram of the structure of the cylinder-driven air-filling seat in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the detection water tank assembly in an embodiment of this utility model.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] Example 1 like Figure 1-6 As shown, a water immersion air tightness testing device for a new energy vehicle wheel hub includes a testing frame 41. The main structure of the testing frame 41 includes an upper frame base and a lower frame base, and several columns are welded to the edges of the upper and lower frame bases.

[0028] In order to achieve a higher and more accurate air tightness test of the wheel hub, an air tightness testing mechanism is installed on the aforementioned testing frame 41. The air tightness testing mechanism includes a test water tank assembly 43 that can be raised and lowered.

[0029] It also includes a hub inflation detection component 42 for locating the hub.

[0030] During operation, the wheel hub is first positioned by the wheel hub inflation detection component 42 and filled with detection gas. Then, the detection water tank component 43 is lifted to immerse the wheel hub in water. During the detection process, if the air tightness of the wheel hub does not meet the requirements, a large number of bubbles will be generated in the water.

[0031] Meanwhile, the aforementioned wheel hub inflation detection assembly 42 includes a rotatable rotating frame structure, which includes a lower turntable 421 for placing the wheel hub and an upper turntable 424 positioned above the lower turntable 421. It also includes a drive structure mounted on the upper turntable 424.

[0032] During operation, the rotating frame structure rotates the wheel hub submerged in water. As it rotates, each side of the wheel hub faces the operator. This 360-degree rotation makes it easier for the operator to spot the location of air bubbles generated by the wheel hub, especially small, inconspicuous bubbles.

[0033] This rotational testing method allows operators to observe the characteristics of wheel hub air tightness testing under water immersion conditions from all angles during the testing process, such as the observation of air bubbles.

[0034] The aforementioned wheel hub inflation detection component 42 also includes an inflation seat 422 that can be raised and lowered. During the detection process, the inflation seat 422 covers and presses against the top surface of the wheel hub.

[0035] Example 2 like Figure 1-6 As shown, this embodiment, based on the structure of embodiment 1, specifically discloses the detailed structure of the rotating frame. Specifically, a plurality of long connecting columns 423 are fixedly connected to the top of the lower rotating platform 421, and the long connecting columns are fixedly connected to the bottom of the upper rotating platform 424. The long connecting columns are welded between the upper and lower rotating platforms 421.

[0036] The top center of the aforementioned upper turntable 424 is fixedly connected to a rotating shaft that is rotatably connected to the top of the frame (a bearing is installed on the upper frame seat of the frame according to the existing rotatable connection method, and the rotating shaft is rotatably connected to the bearing). At the same time, the drive structure 44 includes a motor 444 and a gear structure, and the motor 444 transmits power to the rotating shaft through the gear structure.

[0037] Specifically, this utility model adopts gear transmission because the upper and lower turntables 421 are made of steel plates, and the gear transmission structure provides higher stability.

[0038] Specifically, the gear structure includes a first gear 441 (the first gear 441 is a large gear) fixedly installed at the top of the rotating shaft. At the same time, according to the existing rotating connection method, the top of the frame (the top seat of the frame) is rotatably connected to the first gear shaft, and a second gear 443 meshing with the first gear 441 is fixedly connected to the first gear shaft. It also includes a third gear 442 fixedly connected to the first gear shaft, a second gear shaft fixedly connected to the frame, a fourth gear 445 meshing with the third gear 442 fixedly connected to the second gear shaft, and a drive gear meshing with the fourth gear 445 fixedly connected to the output shaft of the motor 444 (similarly, the bottom of the drive gear is fixedly connected to the gear shaft rotatably connected to the top of the frame).

[0039] During operation, the wheel hub, positioned on the lower turntable 421, rotates under the drive of the motor. If there is a leak in the rotating wheel hub during the water immersion process, the leak will be more clearly observed as the wheel hub rotates so that the leaking part is facing the operator.

[0040] The top of the aforementioned inflatable base 422 is fixedly connected to a first cylinder 426 that pushes the inflatable base 422 up and down. The cylinder barrel of the first cylinder 426 is fixedly installed at the bottom center of the upper turntable 424. Specifically, an inflation chamber is opened at the bottom of the inflatable base 422, and an inflation hose 4251 is connected to the top of the inflatable base 422. According to the existing inflation method, the inflation hose 4251 is connected to the air pump 45. Similarly, the air pump 45 inflates the aforementioned cylinder.

[0041] The operation of the air pump to inflate the air inlet 422 and the cylinder is a conventional method disclosed in the prior art. Similar to existing methods, air intake is controlled by an air valve on the air pipeline. Those skilled in the art can understand how to supply air to the cylinder and air inlet via the air pump 45 by consulting technical manuals and existing technologies.

[0042] When driven by the first cylinder 426, the inflation seat 422 descends until it is pressed and covered to the top surface of the wheel hub. At this time, the top of the wheel hub is sealed by the inflation seat 422, and the bottom is sealed by the plastic pad on the lower turntable 421 (the function of the plastic pad 422 is to place the wheel hub and to use the high horizontal characteristics of the top surface of the plastic pad 422 to seal the bottom of the wheel hub. At the same time, the plastic pad 422, made of plastic material, protects the wheel hub).

[0043] During the test, the inflation hose 4251 pumps in gas at a certain pressure and it enters the sealed wheel hub from the inflation chamber at the bottom of the inflation seat 422.

[0044] As the hub rotates, the inlet and outlet hoses on the cylinder and the inflation hose are wound around. After the test is completed, the rotating frame structure rotates and unwinds the hoses. Specifically, the bottom of the inflation seat 422 has a boss structure. During rotation, the inflation hose wraps around the boss once, and the inlet and outlet hoses on the cylinder wrap around the top of the cylinder once. After the test is completed, all hoses return to their initial positions as the direction rotates.

[0045] Example 3 like Figure 1-6 As shown, based on the structure of Embodiment 2, the above-mentioned test water tank assembly 43 includes a water tank, wherein the water tank is a water tank 431 made of transparent material, such as a water tank 431 made of polyurethane material. The transparent water tank 431 makes it convenient for the operator to observe the airtightness of the wheel hub during the test.

[0046] The water tank 431 is located below the lower turntable 421; a second cylinder 432 is fixedly connected to the bottom of the water tank 431 to push the water tank 431 up and down.

[0047] Specifically, a support frame 433 for supporting the water tank 431 is fixedly connected to the frame. Slide rails 434 are fixedly connected to both sides of the bottom of the water tank 431. The slide rails 434 are slidably connected to the support frame 433 (the support frame 433 is welded to the frame, and there is a pair of crossbeams on the support frame 433. The slide rails slide the crossbeams, and the water tank 431 is supported on the crossbeams).

[0048] Meanwhile, the bottom of the cylinder of the second cylinder 432 is fixedly connected to a mounting base, which is fixedly installed on the ground in the existing manner.

[0049] During operation, after the hub is unloaded and positioned by the air inflator 422, detection gas is injected. Subsequently, the second cylinder 432 drives the water tank 431 to rise until the hub is submerged in water. The operator then turns on the motor, which drives the hub to rotate. During this rotation, the operator determines the airtightness of the hub and identifies any leaks by observing where air bubbles originate in the water.

[0050] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A new energy vehicle hub water immersion air tightness detection device, characterized in that, The system includes a testing frame on which an airtightness testing mechanism is installed, and the airtightness testing mechanism includes a testing water tank assembly that can be raised and lowered. It also includes a wheel hub inflation detection component for positioning the wheel hub. The wheel hub inflation detection component includes a rotatable rotating frame structure, which includes a lower rotating platform for placing the wheel hub and an upper rotating platform positioned above the lower rotating platform. It also includes the drive structure mounted on the upper turntable; The wheel hub inflation testing component also includes an inflatable seat that can be raised and lowered. During the testing process, the inflatable seat cover is pressed against the top surface of the wheel hub.

2. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 1, characterized in that, The top of the lower turntable is fixedly connected to several long connecting columns, which are fixedly connected to the bottom of the upper turntable.

3. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 1, characterized in that, The top center of the upper turntable is fixedly connected to a rotating shaft that is rotatably connected to the top of the frame. The drive structure includes a motor and a gear structure, and the motor transmits power to the rotating shaft through the gear structure.

4. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 3, characterized in that, The gear structure includes a first gear fixedly installed at the top of the rotating shaft, a first gear shaft rotatably connected to the top of the frame, and a second gear meshing with the first gear fixedly connected to the first gear shaft. It also includes a third gear fixedly connected to the first gear shaft, a second gear shaft fixedly connected to the frame, a fourth gear fixedly connected to the second gear shaft to mesh with the third gear, and a drive gear fixedly connected to the output shaft of the motor to mesh with the fourth gear.

5. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 3, characterized in that, The top of the inflatable base is fixedly connected to a first cylinder that pushes the inflatable base to rise and fall, and the cylinder barrel of the first cylinder is fixedly installed at the bottom center of the upper turntable. The bottom of the inflatable base has an inflation chamber, and the top of the inflatable base is connected to an inflation hose, which is connected to an air pump.

6. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 1, characterized in that, The detection water tank assembly includes a water tank located below the lower turntable; The bottom of the water tank is fixedly connected to a second cylinder that pushes the water tank up and down.

7. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 6, characterized in that, A support frame for supporting the water tank is fixedly connected to the frame. Slide rails are fixedly connected to both sides of the bottom of the water tank, and the slide rails are slidably connected to the support frame.

8. The new energy vehicle wheel hub water immersion air tightness testing device according to claim 6, characterized in that, The bottom of the cylinder of the second cylinder is fixedly connected to a mounting base, which is fixedly installed on the ground.

9. The water immersion air tightness testing device for new energy vehicle wheel hubs according to claim 1, characterized in that, The top of the lower turntable is equipped with a plastic pad for placing wheel hubs.

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