Environmental simulation testing machine for automobile hub bearing

Abstract

The invention provides an automobile hub bearing environment simulation testing machine, which comprises a frame body, a temperature adjusting assembly, a muddy water assembly, a dust raising assembly and a driving assembly, and is characterized in that the frame body comprises a test box which is arranged in a sealed manner, and the driving assembly comprises a plurality of driving shafts; the front end of the driving shaft extends into the test box and can be used for mounting a bearing to be tested, the temperature adjusting assembly is arranged adjacent to the test box and is provided with a temperature adjusting pipeline communicated with the inner side of the test box, the muddy water assembly comprises a muddy water pipeline communicated with the test box, and the muddy water pipeline can be used for enabling muddy water to enter the test box. The dust raising assembly comprises a dust raising box and an air pipe, the air pipe is connected to the dust raising box, and the dust raising box can be communicated with the test box. Aiming at the defects in the prior art, the invention provides the environment simulation testing machine for the automobile hub bearing, which can better simulate an external complex environment.

Description

Technical Field

[0001] The present invention relates to the field of bearing test devices, and in particular to an environmental simulation test machine for automotive wheel bearings. Background Art

[0002] The wheel bearing is one of the most important components in an automobile, used to support and rotate the wheel to ensure the vehicle can drive smoothly. It is widely used in various automobiles. At present, with the booming development of the automobile industry, the safety performance and reliability of automobiles have always been the top priorities. As one of the key components of an automobile, the performance of the wheel bearing directly affects the safety and stability of vehicle driving. During the actual operation of the automotive wheel bearing, it needs to bear the weight of the vehicle itself, the impact caused by uneven road surfaces, and the influence of complex and variable environmental factors, such as different temperatures, humidities, dust, etc. With the continuous improvement of the requirements for product quality and reliability in the automotive industry, the performance requirements for wheel bearings are also getting higher and higher. Therefore, wheel bearings often need to be tested and data recorded before leaving the factory to more accurately evaluate the performance of the wheel bearings and facilitate subsequent R & D improvement. In particular, the wheel bearing needs to face a complex and diverse environment during actual operation, such as high-temperature environment, low-temperature environment, dust environment, etc. However, the existing simulation devices have problems such as incomplete simulation working conditions and insufficient simulation accuracy. Therefore, it is also necessary to further improve the corresponding test devices. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an environmental simulation test machine for automotive wheel bearings that can better simulate the external complex environment.

[0004] To achieve the above object, the present invention provides an environmental simulation test machine for automotive wheel bearings, including a frame body, a temperature adjustment component, a mud and water component, a dust raising component, and a driving component. The frame body includes a test chamber arranged in a sealed manner. The driving component includes a plurality of driving shafts. The front end of the driving shaft extends into the test chamber and is available for installing the bearing to be tested. The temperature adjustment component is arranged adjacent to the test chamber and is provided with a temperature adjustment pipeline communicating with the inside of the test chamber. The mud and water component includes a mud and water pipeline communicating with the test chamber, and the mud and water pipeline is available for mud and water to enter the test chamber. The dust raising component includes a dust raising box and a blower. The blower is connected to the dust raising box, and the dust raising box can form a communication with the test chamber.

[0005] The advantages of adopting the above technical solutions are as follows: By setting up the driving component and the test chamber, the front end of the driving shaft extends into the test chamber for installing the bearing to be tested. Then, the test chamber is hermetically set, and the temperature control component, the muddy water component, and the dust-raising component are set, so that different environmental factors simulated by each component can interact with each other in a relatively independent space either simultaneously, separately, or in combination, more realistically reproducing the complex and changeable external environment that the automotive wheel hub bearing may encounter during actual driving, avoiding interference from external factors, thereby providing reliable conditions for accurately testing and evaluating the performance of the bearing. Moreover, the setting of several driving shafts can also test multiple bearings to be tested under different rotational speed conditions simultaneously, and combined with the environmental factors simulated by other components, more comprehensively examine the comprehensive performance of the bearing under complex working conditions. The present invention can be further set as follows: The muddy water component includes a muddy water tank and a mixing tank. The muddy water tank can communicate with the test chamber. A pump pipe for transporting the muddy water to the mixing tank is connected between the muddy water tank and the mixing tank, and one end of the muddy water pipe is connected to the mixing tank.

[0006] Through further setting, the muddy water tank is connected to the mixing tank through a pump pipe, which can continuously supply muddy water to the mixing tank to form a cyclic utilization. The setting of the mixing tank helps prevent sedimentation of particles such as sand and mud in the muddy water, making the particles in the muddy water evenly distributed in the water, avoiding their sinking to the bottom of the mixing tank due to gravity, and also preventing blockage of the pipeline.

[0007] The present invention can be further set as follows: The muddy water component includes a spray pipe. The other end of the muddy water pipe is connected to the spray pipe. The spray pipe includes a main body rotatably connected to the test chamber and a plurality of spray nozzles arranged at intervals.

[0008] Through further setting, the main body of the spray pipe is rotatably connected to the test chamber, which can spray the bearing to be tested in the test chamber from multiple angles and in all directions. This can simulate the actual situation where muddy water splashes onto the wheel hub bearing from different directions during the driving of the vehicle, more realistically reproduce the complex muddy water spraying environment faced by the bearing during actual use, and thus more accurately evaluate the sealing performance and erosion resistance of the bearing.

[0009] The present invention can be further set as follows: A slide rail and a sliding seat are provided corresponding to the lower part of the test chamber on the frame. A communication port communicating with the sliding seat is provided below the test chamber. The muddy water tank and the dust-raising box are arranged on the sliding seat at intervals along the length direction of the slide rail. A first motor for driving the sliding seat to slide along the guide of the slide rail is provided on the slide rail.

[0010] Through further settings, by setting up a slide rail and a sliding seat, as well as a first motor for driving the sliding seat to slide, the mud water tank and the dust box can be easily slid along the slide rail to a suitable position below the test box or moved away from below the test box. When conducting different tests, only the first motor needs to be started, and the adjustment operation of the mud water tank or the dust box is simple and fast, greatly saving the time and labor costs for replacing equipment.

[0011] The present invention can be further set as follows: a pushing member and a second motor for driving the pushing member to expand and contract are provided below the slide rail, and through holes for the pushing member to extend into are provided at the positions corresponding to the lower sides of the mud water tank and the dust box on the sliding seat.

[0012] Through further settings, the second motor can be used to drive the pushing member to expand and contract, and further, the distance between the mud water tank and the dust box and the communication port below the test box can be adjusted. Under normal distances, it is convenient for the sliding and switching of the mud water tank and the dust box. In the laboratory, by driving the pushing member to expand and contract with the second motor, the mud water tank or the dust box can be pressed tightly against the lower side of the test box to prevent sand and dust or mud and water from leaking through the gaps.

[0013] The present invention can be further set as follows: guiding parts are provided below both the mud water tank and the dust box, a retaining edge is provided on the sliding seat around the guiding parts, and the guiding parts can slide along the inner wall of the retaining edge.

[0014] Through further settings, the cooperation between the guiding parts and the retaining edge provides an accurate guiding effect for the sliding of the mud water tank and the dust box. Since the guiding parts can slide along the inner wall of the retaining edge, this limits the mud water tank and the dust box to only move in a specific direction, avoiding the situation of left - right shaking or deviation during the sliding process, thus ensuring the accuracy and stability of their up - and - down sliding.

[0015] The present invention can be further set as follows: extending edges extending laterally are provided around the openings of the mud water tank and the dust box, and the extending edges can fit against the wall surface around the corresponding communication port of the test box.

[0016] Through further settings, the extending edges can fit against the wall surface around the corresponding communication port of the test box, forming a relatively tight contact and also increasing the contact area. It can effectively reduce or even avoid the leakage of mud water or dust from the gaps between the mud water tank, the dust box and the communication port of the test box, thus ensuring the sealing of the test environment, preventing the leakage of the test medium from interfering with the test results and polluting the surrounding environment.

[0017] The present invention can be further set as follows: a number of air inlets are provided on the dust box, and a number of air inlets can all form connections between the dust box and the fan, and a number of air inlets can be independently opened or closed.

[0018] Through further configuration, multiple air inlets can be used to bring air into the dust box from different angles, which allows the wind from the fan to carry dust particles into the test box from multiple directions, more realistically simulating the complex dust environment in which dust blows in from all directions during the actual driving of the car. In addition, the setting of multiple air inlets and the independent controllable characteristics can make the dust particles more evenly distributed in the dust box and the test box, reducing the possibility of dust accumulation.

[0019] The present invention may be further configured as follows: the driving assembly includes a mounting member, the mounting member includes an edge extending in an inclined manner, and the driving shaft is installed at intervals along the edge.

[0020] Through further configuration, the drive shafts are installed at intervals along the inclined edges. Compared with the horizontally arranged drive shafts, this inclined arrangement provides the operator with more ample operating space. When installing the bearing to be tested, the operator can more conveniently approach the drive shaft from different angles to perform installation operations, avoiding the inconvenience of operation caused by narrow space. Moreover, since the drive shafts are arranged at an angle, the spatial distribution of each drive shaft is more reasonable, which reduces the possibility of mutual interference between adjacent drive shafts during installation and facilitates observation during testing.

[0021] The present invention can be further configured as follows: there are two mounting parts, which are symmetrically arranged on both sides of the test box, the front end of the drive shaft can be fixedly connected to the inner flange of the bearing to be tested by bolts, and the outer flanges of the two opposite bearings to be tested can be connected by flexible spring sheets.

[0022] Through further configuration, two mounting parts are symmetrically arranged on both sides of the test box. This symmetrical layout allows operators to have relatively consistent operating space and operation methods when installing the bearing to be tested. Whether the bearing is installed on the left or right side of the test box, there will be no operational inconvenience due to the difference in layout, which reduces the difficulty of installation and improves the installation efficiency. At the same time, the outer flanges of the two opposite bearings to be tested are connected by flexible spring sheets, which can facilitate installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 A top view of an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a test box in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the driving component in an embodiment of the present invention; Figure 5Schematic diagram of the cooperation among the guide rail, sliding seat, dust box and mud water tank in the embodiment of the present invention; Figure 6 Structural schematic diagram of the embodiment of the present invention Figure 2 Figure 7 Embodiment of the present invention Figure 6 Cross-sectional view taken along line A-A in the embodiment Wherein: frame 1; test chamber 11; temperature adjustment port 111; slide rail 12; sliding seat 13; through hole 131; edge 132; communication port 14; first motor 15; pushing member 16; second motor 17; temperature adjustment assembly 2; temperature adjustment pipe 21; mud and water assembly 3; mud and water pipe 31; mud water tank 32; stirring tank 33; spray pipe 34; main body 341 of the spray pipe; spray port 342; pump pipe 35; dust raising assembly 4; dust box 41; air inlet 411; fan 42; drive assembly 5; drive shaft 51; mounting member 52; edge 521; bearing under test 6; guiding portion 71; extending edge 72. Detailed implementation method

[0024] An embodiment of an environmental simulation test machine for automobile wheel hub bearings of the present invention is as Figures 1 - 5 shown: It includes a frame 1, a temperature adjustment assembly 2, a mud and water assembly 3, a dust raising assembly 4 and a drive assembly 5. The frame 1 includes a hermetically arranged test chamber 11. The drive assembly 5 includes a plurality of drive shafts 51. The front end of the drive shaft 51 extends into the test chamber 11 and is available for mounting the bearing under test 6. The temperature adjustment assembly 2 is arranged adjacent to the test chamber 11 and is provided with a temperature adjustment pipe 21 communicating with the inside of the test chamber 11. A temperature adjustment port 111 is formed in the test chamber 11 for the temperature adjustment air flow to enter the test chamber 11. The mud and water assembly 3 includes a mud and water pipe 31 communicating with the test chamber 11. The mud and water pipe 31 allows mud and water to enter the test chamber 11. The dust raising assembly 4 includes a dust box 41 and a fan 42. The fan 42 is connected to the dust box 41. The dust box 41 can communicate with the test chamber 11.

[0025] The mud and water assembly 3 includes a mud water tank 32 and a stirring tank 33. The mud water tank 32 can communicate with the test chamber 11. A pump pipe 35 for transporting mud and water to the stirring tank 33 is connected between the mud water tank 32 and the stirring tank 33. One end of the mud and water pipe 31 is connected to the stirring tank 33.

[0026] The mud and water assembly 31 includes a spray pipe 34. The other end of the mud and water pipe 31 is connected to the spray pipe 34. The spray pipe 34 includes a main body 341 rotatably connected to the test chamber and a plurality of spray ports 342 arranged at intervals.

[0027] A slide rail 12 and a sliding seat 13 are provided corresponding to the lower part of the test chamber 11 of the frame body 1. A communication port 14 communicating with the sliding seat 13 is provided below the test chamber 11. The mud water tank 32 and the dust raising box 41 are arranged on the sliding seat 13 at intervals along the length direction of the slide rail. A first motor 15 for driving the sliding seat 13 to slide along the guide of the slide rail 12 is provided on the slide rail 12.

[0028] A pushing member 16 and a second motor 17 for driving the pushing member 16 to expand and contract are provided below the slide rail 12. Through holes 131 into which the pushing member 16 can extend are provided corresponding to the lower parts of the mud water tank 32 and the dust raising box 41 on the sliding seat 13.

[0029] Guide parts 71 are provided below both the mud water tank 32 and the dust raising box 41. The sliding seat 13 is provided with a retaining edge 132 around the guide part 71, and the guide part can slide along the inner wall of the retaining edge 132.

[0030] Extended edges 72 extending laterally are provided around the openings of the mud water tank 32 and the dust raising box 41, and the extended edges 72 can be attached to the wall surface around the communication port 14 of the test chamber 11.

[0031] A number of air inlets 411 are provided on the dust raising box 41. The number of air inlets 411 can all form connections between the dust raising box 41 and the fan 42, and the number of air inlets 411 can all be independently opened or closed.

[0032] The driving assembly 5 includes a mounting member 52. The mounting member 52 includes an edge 521 extending obliquely, and the driving shafts 51 are installed at intervals along the edge 521.

[0033] There are two mounting members 52, and the two mounting members 52 are symmetrically arranged on both sides of the test chamber 11. The front end of the driving shaft 51 can be fixedly connected to the inner flange of the bearing under test 6 by bolts, and the outer flanges of the two opposite bearings under test 6 can be connected by flexible spring plates.

[0034] The above examples are only one of the preferred specific examples of the present invention. The common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. An environmental simulation test machine for automotive wheel bearings, characterized in that: It includes a frame body, a temperature control component, a muddy water component, a dust raising component and a driving component. The frame body includes a test chamber which is hermetically arranged. The driving component includes a number of driving shafts. The front end of the driving shaft extends into the test chamber and is available for installing the bearing to be tested. The temperature control component is arranged adjacent to the test chamber and is provided with a temperature control pipeline communicating with the inner side of the test chamber. The muddy water component includes a muddy water pipeline communicating with the test chamber, and the muddy water pipeline allows muddy water to enter the test chamber. The dust raising component includes a dust raising chamber and a blower. The blower is connected to the dust raising chamber, and the dust raising chamber can form a connection with the test chamber.

2. The automotive wheel hub bearing environmental simulation testing machine according to claim 1, wherein: The muddy water component includes a muddy water tank and a stirring tank. The muddy water tank can form a connection with the test chamber. A pump pipe for conveying muddy water to the stirring tank is connected between the muddy water tank and the stirring tank, and one end of the muddy water pipeline is connected to the stirring tank.

3. The automotive wheel bearing environmental simulation testing machine according to claim 2, wherein: The muddy water component includes a spray pipe. The other end of the muddy water pipeline is connected to the spray pipe. The spray pipe includes a main body rotatably connected to the test chamber and a number of spray openings arranged at intervals.

4. The automotive hub bearing environment simulation test machine according to claim 2 or 3, characterized in that: A slide rail and a sliding seat are arranged corresponding to the lower part of the test chamber on the frame body. A communication port communicating with the sliding seat is arranged below the test chamber. The muddy water tank and the dust raising chamber are arranged on the sliding seat at intervals along the length direction of the slide rail. A first motor for driving the sliding seat to slide along the guide of the slide rail is arranged on the slide rail.

5. The automotive hub bearing environmental simulation test machine according to claim 4, characterized in that: A pushing member and a second motor for driving the pushing member to extend and retract are arranged below the slide rail. Through holes for the pushing member to extend into are arranged corresponding to the lower parts of the muddy water tank and the dust raising chamber on the sliding seat.

6. The automotive wheel hub bearing environmental simulation testing machine according to claim 5, characterized in that: Guide parts are arranged below both the muddy water tank and the dust raising chamber. A retaining edge is arranged on the sliding seat around the guide parts, and the guide parts can slide along the inner wall of the retaining edge.

7. The automotive wheel bearing environmental simulation testing machine according to claim 3 or 4 or 5, characterized in that: Extended edges extending laterally are arranged around the openings of the muddy water tank and the dust raising chamber, and the extended edges can be attached to the wall surface around the communication port of the test chamber.

8. The automotive hub bearing environment simulation testing machine according to claim 1 or 2 or 3 or 4, characterized in that: A number of air inlets are arranged on the dust raising chamber. All the air inlets can form a connection between the dust raising chamber and the blower, and all the air inlets can be independently opened or closed.

9. The automotive hub bearing environment simulation test machine according to claim 1 or 2 or 3 or 4, characterized in that: The driving component includes a mounting member. The mounting member includes an edge extending obliquely, and the driving shafts are arranged at intervals along the edge.

10. The automotive wheel hub bearing environmental simulation test machine according to claim 9, wherein: There are two mounting members, and the two mounting members are symmetrically arranged on both sides of the test chamber. The front end of the driving shaft can be fixedly connected to the inner flange of the bearing to be tested through bolts, and the outer flanges of two opposite bearings to be tested can be connected through a flexible spring plate.

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