Wheel set bearing detection device

Abstract

The present invention relates to the field of locomotive detection technology, and in particular to a wheelset bearing detection device. It comprises: a detection platform, a test wheel mechanism, the test wheel mechanism is arranged on the detection platform, and is used to drive the detected wheelset to rotate, and comprises a test wheel, and the contact part between the test wheel and the detected wheelset is the same in shape and size as the contact part between the rail and the detected wheel; a hydraulic loading mechanism is located on both sides of the detection platform, and is used to press down and detect the bearing status of the detected wheelset. The test wheel mechanism can drive the detected wheelset to rotate. Since the shape of the test wheel is the same as the rail, it can replace the rail to achieve the purpose of detection of the detected wheelset without moving forward. The hydraulic loading mechanism presses the detected wheelset and detects the bearing status of the detected wheelset. When the wheelset bearing detection device provided in this embodiment detects the bearing, the bearing can be detected without disassembling the bearing, and the detection result has high accuracy and high detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of locomotive detection, and in particular to a wheelset bearing detection device. Background Art

[0002] There are two basic methods for wheelset bearing inspection: the first is to fix the wheelset and manually rotate the outer ring of the bearing, relying on the technicians' experience to judge the quality of the bearing by its sound or feel; the second is to equip a bearing inspection test bench in the wheelset maintenance warehouse, use an overhead crane or other means to lift the wheelset to be tested into the working position of the bearing inspection test bench and fix the outer ring of the bearing, then start the drive device, drive the wheelset to be tested through the tapered friction wheel transmission, and rely on the detection equipment to detect indicators such as the temperature of the wheelset bearing to determine the quality of the bearing.

[0003] Although the above two methods can identify severely damaged bearings to a certain extent, they have the following shortcomings:

[0004] 1. Manual testing based on experience is extremely inefficient and requires extremely high levels of experience, and its judgment is not supported by sufficient data;

[0005] 2. When using the bearing test bench for testing, the wheelset being tested is driven to rotate by the rubber cone friction wheel. This test bench cannot load the bearings and has large vibrations, which seriously affects the accuracy of wheelset bearing identification.

[0006] 3. When using the bearing inspection test bench for testing, it is necessary to use an overhead crane or other auxiliary equipment to lift the wheelset to the test bench working position, which is inefficient and requires other lifting equipment.

[0007] Therefore, it is necessary to propose a wheelset bearing detection device that can solve the problem that the existing bearing detection test bench cannot simulate the normal working conditions of the wheelset. Summary of the invention

[0008] The purpose of the present invention is to propose a wheelset bearing detection device, which can realize the rotation of the detected wheelset at different speeds under the loaded state, completely simulate the working condition of the wheelset bearing under the working state, and realize the detection of the wheelset bearing under the working state.

[0009] To achieve this object, the present invention adopts the following technical solutions:

[0010] A wheelset bearing detection device is provided, comprising:

[0011] A testing platform and a test wheel mechanism, wherein the test wheel mechanism is arranged on the testing platform and is used to drive the tested wheelset to rotate, and comprises a test wheel, and the contact portion between the test wheel and the tested wheelset and the contact portion between the rail and the tested wheelset are of the same shape and size;

[0012] The hydraulic loading mechanism is located on both sides of the detection platform and is used to press down and detect the bearing status of the detected wheelset.

[0013] Preferably, the accompanying test wheel mechanism also includes an accompanying test wheel detection component, a accompanying test wheel shaft, a supporting mechanism and a motor. The accompanying test wheel is passed through the accompanying test wheel shaft, a supporting mechanism is respectively arranged at both ends of the accompanying test wheel shaft, and the accompanying test wheel shaft is rotatably connected to each supporting mechanism. A motor is arranged on one side of the supporting mechanism, and the accompanying test wheel shaft is connected to the motor.

[0014] Preferably, the test wheel detection component includes a pressure detector and a speed detector, and both the pressure detector and the speed detector are arranged on the support mechanism.

[0015] Preferably, the supporting mechanism comprises an outer frame, a guide frame and a test wheel bearing, the outer frame is provided with a receiving through hole, the guide frame is arranged in the receiving through hole, the speed detector is arranged on the test wheel bearing for detecting the rotation speed of the test wheel bearing, the pressure detector and the test wheel bearing are arranged in the guide frame, and the pressure detector is located below the test wheel bearing and is arranged in contact with the test wheel bearing.

[0016] Preferably, the bearing comprises a first test wheel bearing and a second test wheel bearing which are coaxially arranged, the second test wheel bearing is located between the test wheel pair and the first test wheel bearing, and the speed detector is arranged on the first test wheel bearing.

[0017] Preferably, it also includes a floating track located above the test wheel mechanism; the floating track includes a track frame, a cover plate and a floating rail, the track frame is located at the bottom of the cover plate and is fixedly connected to the cover plate, and the two floating tracks are arranged on the track frame and located on both sides of the cover plate.

[0018] Preferably, each of the floating rails comprises a first rail and a second rail, the first rail and the second rail are spaced apart and symmetrically arranged, a first groove is arranged on the rail frame, and the top of the test wheel passes through the first groove and is located between the first rail and the second rail.

[0019] Preferably, the floating rail further comprises an elastic element, and the elastic element is arranged below the first rail and the second rail.

[0020] Preferably, the hydraulic loading mechanism includes a hydraulic frame, a hydraulic cylinder, a vibration detector and a pressure head. The hydraulic cylinder is arranged on the hydraulic frame. The hydraulic rod of the hydraulic cylinder is connected to the pressure head and can drive the pressure head to move horizontally up and down. The vibration detector is arranged in a receiving groove of the pressure head.

[0021] Preferably, the pressure head comprises a pressure head frame and a pressure head working part, the pressure head working part is arranged in a chamber formed by the pressure head frame, and the pressure head working part is provided with an arc-shaped groove.

[0022] Beneficial effects of the present invention:

[0023] The wheelset bearing detection device provided in the present invention has a test wheel mechanism that can drive the wheelset to be detected to rotate. Since the test wheel has the same shape as the rail, it can replace the rail to achieve the purpose of detection without moving the wheelset forward. The hydraulic loading mechanism presses the wheelset to be detected and detects the bearing status of the wheelset to be detected. When the wheelset bearing detection device provided in the present invention detects the bearing, the wheelset bearing can be detected without disassembling the wheelset bearing, and the detection result has high accuracy and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a wheelset bearing detection device provided by an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A cross-sectional view of

[0026] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0027] Figure 4 yes Figure 1 A partial structural diagram of the test wheel mechanism provided in;

[0028] Figure 5 yes Figure 1 A top view of the floating track provided in;

[0029] Figure 6 yes Figure 5 Side view of the mid-floating track;

[0030] Figure 7 yes Figure 1 Schematic diagram of the structure of the hydraulic loading mechanism provided in.

[0031] In the figure:

[0032] 1. Test bench; 2. Test wheel mechanism; 21. Test wheel; 22. Test wheel axle; 23. Support mechanism; 231. Outer frame; 232. Guide frame; 24. Motor; 25. Pressure detector; 26. Speed ​​detector; 27. First test wheel bearing; 28. Second test wheel bearing; 29. ​​End cover; 3. Hydraulic loading mechanism; 31. Hydraulic frame; 32. Hydraulic rod; 33. Pressure head frame; 34. Pressure head working part; 341. Arc groove; 35. Rubber pad; 36. Guide column; 4. Floating track; 41. Track frame; 411. First groove; 42. Cover plate; 43. Floating rail; 431. First track; 432. Second track; 44. Support frame; 5. Wheel set to be tested. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] like Figure 1-2 As shown, the wheelset bearing detection device comprises: a detection platform 1, a test wheel mechanism 2, a floating track 4 and a hydraulic loading mechanism 3. Among them, the test wheel mechanism 2 is arranged on the detection platform 1, and is used to drive the detected wheelset 5 to rotate. The test wheel mechanism 2 comprises a test wheel 21, and the contact part between the test wheel 21 and the detected wheelset 5 and the contact part between the rail and the detected wheels are of the same shape and size; the floating track 4 is located above the test wheel mechanism 2, and the bottom of the detected wheelset 5 passes through the floating track 4 and contacts with the test wheel mechanism 2, and the detected wheelset 5 can rotate with the test wheel mechanism 2; the hydraulic loading mechanism 3 is located on both sides of the detection platform 1, and is used to press down and detect the detected wheelset 5.

[0035] In the wheelset bearing detection device provided in this embodiment, the test wheel mechanism 2 can drive the wheelset 5 to be detected to rotate. Since the test wheel 21 has the same shape as the rail, it can replace the rail to achieve the purpose of detection of the wheelset 5 to be detected without moving forward. The hydraulic loading mechanism 3 presses the wheelset 5 to be detected and detects the bearing state of the wheelset 5 to be detected. When the wheelset bearing detection device provided in this embodiment detects the bearing, the wheelset bearing can be detected without disassembling the wheelset bearing, and the detection result has high accuracy and high detection efficiency.

[0036] The material of the test bench 1 is a cast iron platform, which is horizontally fixed in the foundation pit of the maintenance warehouse through auxiliary parts such as embedded parts and shims. The surface of the test bench 1 is processed with T-slots for bolt connection and fixation with other corresponding parts.

[0037] Specifically, Figure 2-4As shown, the test wheel mechanism 2 also includes a test wheel detection component, a test wheel shaft 22, a support mechanism 23 and a motor 24. The test wheel 21 can be rotatably arranged on the test wheel shaft 22. A support mechanism 23 is provided at each end of the test wheel shaft 22, and the test wheel shaft 22 is rotatably connected to each support mechanism 23. A motor 24 is provided on one side of one of the support mechanisms 23. The test wheel shaft 22 is connected to the motor 24, and the motor 24 drives the test wheel 21 to rotate. The wheel diameters of the two test wheels 21 are both 900mm. The test wheels 21 and the test wheel shaft 22 are press-fitted by interference fit to ensure the transmission of the required torque. The track gauge between the two test wheels 21 is 1435mm. The motor 24 is connected to the test wheel shaft 22 through a coupling to ensure that the test wheels can rotate freely.

[0038] The above-mentioned test wheel detection assembly includes a pressure detector 25 and a speed detector 26, both of which are arranged on the support mechanism 23. The speed detector 26 is used to detect the rotation speed of the test wheel 21, and the pressure detector 25 is used to detect whether the pressure on the test wheel 21 is a preset pressure value, so as to ensure that the tested wheel pair 5 is in a working state during the detection, and to ensure the accuracy of the bearing detection data.

[0039] The support mechanism 23 is fixed on the test bench 1, and specifically includes an outer frame 231, a guide frame 232 and a test wheel bearing, and the test wheel bearing can realize the free rotation of the test wheel shaft 22 on the support mechanism 23. The outer frame 231 is provided with a receiving through hole, the guide frame 232 is arranged in the receiving through hole, and the speed detector 26 is arranged on the test wheel bearing to detect the rotation speed of the test wheel bearing. The pressure detector 25 and the test wheel bearing are arranged in the guide frame 232, and the pressure detector 25 is located below the test wheel bearing and is arranged in contact with the bearing.

[0040] The guide frame 232 includes an upper guide frame and a lower guide frame, the upper guide frame and the lower guide frame are fixedly connected, and the test wheel bearing is located in the chamber formed by the upper guide frame 232 and the lower guide frame 232. The test wheel bearing includes a first test wheel bearing 27 and a second test wheel bearing 28 coaxially arranged with the first test wheel bearing 27, the second test wheel bearing 28 is located between the test wheel 21 pair and the first test wheel bearing 27, and the speed detector 26 is arranged on the first test wheel bearing 27. The first test wheel bearing 27 and the second test wheel bearing 28 are of different types, which is convenient for detection. An end cover 29 is also arranged on the outer side of the first test wheel bearing 27, which is used to cover the first test wheel bearing 27, protect the first test wheel bearing 27 and make the appearance more beautiful.

[0041] like Figure 5 and Figure 6As shown, the floating track 4 comprises a track frame 41, a cover plate 42 and a floating rail 43. The track frame 41 is located at the bottom of the cover plate 42 and is fixedly connected to the cover plate 42. Two floating rails 43 are arranged on the track frame 41 and are located on both sides of the cover plate 42. Each floating rail 43 comprises a first rail 431 and a second rail 432. The first rail 431 and the second rail 432 are both provided with an arc-shaped side wall. The first rail 431 and the second rail 432 are spaced and symmetrically arranged. The track frame 41 is provided with a first groove 411. The first groove 411 and the two arc-shaped side walls form an arc-shaped cavity capable of accommodating the accompanying test wheel 21. The top of the accompanying test wheel 21 can extend out of the gap between the first rail 431 and the second rail 432.

[0042] The track frame 41 is mainly formed by welding HW steel 300 / 300, supports the cover plate 42 and the floating rail 43, and is fixedly connected to the inspection platform 1.

[0043] An elastic element 44 is arranged inside the floating rail 43. The elastic element 44 is a spring. The spring is selected according to the weight of the wheelset to be measured. The purpose of setting the spring is that when the wheelset to be measured passes, the floating rail 43 is combined with the test wheel 21 to facilitate the smooth passage of the wheelset to be measured. When the wheelset to be measured leaves the floating rail 43, it rises under the elastic force of the spring and keeps a certain distance from the test wheel 21 to prevent the test wheel 21 from interfering with the floating rail 43 when rotating. Each floating rail 43 also includes a support frame 44 and an elastic element (not shown in the figure). A first rail 431 and a second rail 432 are arranged on the top 44 of the support frame. A first through hole capable of accommodating a spring is opened on the top wall of the support frame. The spring is arranged in the first through hole for limiting position, and the top end of the spring is connected to the first rail 431 or the second rail 432 arranged thereon. A second through hole (not shown in the figure) is arranged on the first rail 431 to allow the top of the spring to extend into the interior of the first rail 431. A third through hole (not shown in the figure) is arranged on the second rail 432 to allow the top of the spring to extend into the interior of the second rail, thereby ensuring that the first rail 431 and the second rail 432 float on the center of the support frame, facilitating the smooth passage of the measured wheelset.

[0044] like Figure 7As shown, the hydraulic loading mechanism 3 includes a hydraulic frame 31, a hydraulic cylinder, a vibration detector (not shown in the figure) and a pressure head. The hydraulic cylinder is arranged on the hydraulic frame 31. The hydraulic rod 32 of the hydraulic cylinder is connected to the pressure head and can drive the pressure head to move up and down. The vibration detector is arranged in the accommodating groove (not shown in the figure) of the pressure head. The pressure head includes a pressure head frame 33 and a pressure head working part 34. The pressure head working part 34 is arranged in a chamber formed by the pressure head frame 33. The pressure head working part 34 is provided with an arc groove 341. The accommodating groove is specifically arranged on the arc side wall of the arc groove 341 and is concave inward. The arc groove 341 can also automatically align the measured wheel pair 5. A rubber pad 35 is also arranged between the pressure head working part 34 and the pressure head frame 33. The pressure head working part 34 is designed separately to adapt to the outer ring of the bearing of different journals, and is convenient and fast to be replaced in the pressure head frame 33. The rubber pad 35 is assembled between the pressure head frame 33 and the pressure head working part 34, which has a certain effect of reducing the vibration of the tested wheelset during the test. The left and right sides of the hydraulic rod 32 are also provided with guide posts 36 and guide sleeves (not shown in the figure). One end of the guide post 36 is fixedly connected to the pressure head frame 33, and the other end passes through the hydraulic frame 31. The hydraulic frame 31 is provided with a guide sleeve that allows the guide post 36 to pass through. The guide post 36 and the guide sleeve ensure the guiding property. The hydraulic cylinder ensures the rigidity and strength.

[0045] The present embodiment also includes a controller, which is electrically connected to the test wheel mechanism 2 and the hydraulic loading mechanism 3, respectively. Specifically, the controller is electrically connected to the pressure detector 25, the speed detector 26 and the vibration detector to obtain relevant detection data and control the action of the motor 24 and the hydraulic cylinder, so as to facilitate the acquisition of relevant data detected by the test wheel mechanism 2 and the hydraulic loading mechanism 3.

[0046] The wheelset bearing detection device provided in this embodiment works as follows:

[0047] 1. The bottom of the tested wheel pair 5 is fitted with the top of the accompanying test wheel 21 of the accompanying test wheel mechanism 2 through the floating track 4, ensuring that the tested wheel pair 5 is located directly above the accompanying test wheel 21;

[0048] 2. The hydraulic loading mechanism 3 is actuated to pressurize the wheelset 5 to be tested. The arc-shaped groove 341 of the pressure head working part 34 abuts against the rotating shaft of the wheelset 5 to be tested. When the value detected by the pressure detector 25 reaches the preset value, the pressurization is stopped.

[0049] 3. The motor 24 drives the test wheel mechanism 2 to work, and the test wheel 21 and the first test wheel bearing 27 and the second test wheel bearing 28 rotate together under the drive of the test wheel shaft 22. When the speed detector 26 detects that the speed of the test wheel mechanism 2 is a preset value, the vibration detector located in the accommodating groove starts to detect the vibration-related data of the wheelset bearing and transmits the relevant data to the controller. The controller displays the relevant data on the display or prints the relevant data on the printer for reference by the inspector.

[0050] Note that the above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A wheelset bearing detection device, characterized in that: include: A testing platform (1), a test wheel mechanism (2), wherein the test wheel mechanism (2) is arranged on the testing platform (1) and is used to drive the tested wheelset (5) to rotate, and comprises a test wheel (21), wherein the contact portion between the test wheel (21) and the tested wheelset (5) and the contact portion between the rail and the tested wheelset (5) are of the same shape and size; A hydraulic loading mechanism (3), located on both sides of the testing platform (1), is used to press down and detect the bearing status of the tested wheelset (5); A floating track (4) is located above the accompanying test wheel mechanism (2), the floating track (4) comprising a track frame (41), a cover plate (42) and a floating rail (43), the track frame (41) being located at the bottom of the cover plate (42) and being fixedly connected to the cover plate (42), two floating tracks (4) being arranged on the track frame (41) and being located on both sides of the cover plate (42), each of the floating rails (43) comprising a first track (431) and a second track (432), the first track (431) and the second track (432) being spaced apart and symmetrically arranged, the track frame (41) being provided with a first groove (411), the top of the accompanying test wheel (21) being provided with a first groove (412), The groove (411) is located between the first track (431) and the second track (432); the first track (431) and the second track (432) are both provided with an arc-shaped side wall; the first track (431) and the second track (432) are spaced apart and symmetrically arranged; the first groove (411) and the two arc-shaped side walls form an arc-shaped cavity capable of accommodating the accompanying test wheel (21); the top of the accompanying test wheel (21) can extend out of the gap between the first track (431) and the second track (432); the floating rail (43) further comprises an elastic element, which is arranged below the first track (431) and the second track (432).

2. The wheelset bearing detection device according to claim 1, characterized in that: The accompanying test wheel mechanism (2) further comprises an accompanying test wheel detection component, an accompanying test wheel shaft (22), a supporting mechanism (23) and a motor (24); the accompanying test wheel (21) is arranged on the accompanying test wheel shaft (22); a supporting mechanism (23) is arranged at each end of the accompanying test wheel shaft (22); the accompanying test wheel shaft (22) is rotatably connected to each supporting mechanism (23); a motor (24) is arranged on one side of the supporting mechanism (23); and the accompanying test wheel shaft (22) is connected to the motor (24).

3. The wheelset bearing detection device according to claim 2, characterized in that: The accompanying test wheel detection component comprises a pressure detector (25) and a speed detector (26), and the pressure detector (25) and the speed detector (26) are both arranged on the supporting mechanism (23).

4. The wheelset bearing detection device according to claim 3, characterized in that: The support mechanism (23) comprises an outer frame (231), a guide frame (232) and a test wheel bearing, the outer frame (231) is provided with a receiving through hole, the guide frame (232) is arranged in the receiving through hole, the speed detector (26) is arranged on the test wheel bearing for detecting the rotation speed of the test wheel bearing, the pressure detector (25) and the test wheel bearing are arranged in the guide frame (232), and the pressure detector (25) is located below the test wheel bearing and is arranged in contact with the test wheel bearing.

5. The wheelset bearing detection device according to claim 3, characterized in that: The bearing comprises a first test wheel bearing (27) and a second test wheel bearing (28) which are coaxially arranged, wherein the second test wheel bearing (28) is located between the pair of test wheels (21) and the first test wheel bearing (27), and the speed detector (26) is arranged on the first test wheel bearing (27).

6. The wheelset bearing detection device according to claim 1, characterized in that: The hydraulic loading mechanism (3) comprises a hydraulic frame (31), a hydraulic cylinder, a vibration detector and a pressure head. The hydraulic cylinder is arranged on the hydraulic frame (31). The hydraulic rod (32) of the hydraulic cylinder is connected to the pressure head and can drive the pressure head to move horizontally up and down. The vibration detector is arranged in a receiving groove of the pressure head.

7. The wheelset bearing detection device according to claim 6, characterized in that: The pressure head comprises a pressure head frame (33) and a pressure head working part (34); the pressure head working part (34) is arranged in a chamber formed by the pressure head frame (33); and the pressure head working part (34) is provided with an arc-shaped groove (341).

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