A noise testing device and method for electric locomotive reducer assembly

Abstract

The invention relates to a noise testing device for an electric locomotive reducer assembly and a testing method thereof. The device comprises a frame, a reducer connecting mechanism, a half-axle bridge housing connecting mechanism and a load mechanism connected to the frame, the reducer connecting mechanism comprises a transmission mechanism, the transmission mechanism comprises a rotating seat and a motor connecting flange seat, the reducer assembly is pressed on the rotating seat through a first driving cylinder, the motor connecting flange seat is connected to a driving motor drivingly connected to the reducer assembly, the half-axle bridge housing connecting mechanism comprises a bridge housing, the bridge housing is connected to a refueling port and an oil drain valve at the top and bottom, two half-axles are passed through two sides of the bridge housing, the bridge housing is also connected to a second driving cylinder, the load mechanism comprises a sliding shaft, two ends of the sliding shaft are respectively connected to a rotating shaft and a third driving cylinder, a disc brake disc is connected to the rotating shaft, and a disc brake caliper is connected to the sliding shaft of the matching disc brake disc. The device for testing the noise of the electric locomotive reducer assembly and the testing method thereof are used to test the noise of the reducer assembly during operation, and the test installation and operation are simple.

Description

Technical Field

[0001] The invention relates to a speed reducer assembly noise test, and in particular to an electric locomotive speed reducer assembly noise test device and a test method thereof. Background Art

[0002] The electric vehicle reducer is an important component that connects the drive-end motor and the drive half-axle. When the reducer is working, the gears inside the reducer rub against each other and generate noise. After the reducer is produced, it is necessary to detect the noise of the reducer under differential, load, and sliding. Traditional testing requires on-vehicle testing, which is cumbersome to install and operate. Summary of the invention

[0003] In view of the above shortcomings, the applicant has conducted research and improvement, and provided a noise testing device and a testing method for a locomotive reducer assembly.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A noise testing device for a motor vehicle reducer assembly comprises a frame, a reducer connecting mechanism is connected to the frame, the reducer connecting mechanism comprises a transmission mechanism, the transmission mechanism comprises a rotating seat, the rotating seat is rotatably connected to a motor connecting flange seat, the reducer assembly is pressed on the rotating seat by a first driving cylinder, the motor connecting flange seat is connected to a driving motor, the driving end of the driving motor is connected to the reducer assembly, the frame is connected to a half-axle bridge housing connecting mechanism arranged vertically with the reducer connecting mechanism, the half-axle bridge housing connecting mechanism comprises a The bridge housing is connected to the assembly, and the upper and lower parts of the bridge housing are connected to the refueling port and the oil drain valve. Two movable half-axes are passed through both sides of the bridge housing. The bridge housing is also connected to the driving end of the second driving cylinder. The frame is located on both sides of the half-axle bridge housing connection mechanism and is connected to the load mechanism. The load mechanism includes a sliding shaft. The sliding shaft is rotatably connected to the rotating shaft for connecting the half-axle near one end of the half-axle bridge housing connection mechanism, and the other end of the sliding shaft is connected to the driving end of the third driving cylinder. The rotating shaft is connected to a disc brake disc, and the sliding shaft is connected to a disc brake caliper in cooperation with the disc brake disc.

[0006] As a further improvement of the above technical solution:

[0007] Three connection holes with different distances from the rotation center are respectively arranged on the installation surface of the rotating seat, and different reducer assemblies can be connected to the installation surface of the rotating seat through different connection holes.

[0008] The bridge housing is connected to the longitudinal guide seat via a connecting seat, and the longitudinal guide seat is inserted into a longitudinal guide groove provided on the frame.

[0009] The sliding shaft passes through a transverse guide seat connected to the frame, and the transverse guide seat includes a guide sleeve that allows the sliding shaft to pass through, and the guide sleeve is connected to the frame through a base.

[0010] A method for testing noise of a locomotive reducer assembly comprises the following steps:

[0011] 1) Installation of the reduction assembly: The reduction assembly is pressed onto the rotating seat of the transmission mechanism through the driving end of the first driving cylinder. The rotating seat can be rotated to adjust the orientation angle of the reduction assembly according to the required test conditions, and the reduction assembly is connected to the driving end of the driving motor;

[0012] 2) Installation of the half-axle bridge housing connection mechanism and the load mechanism: The second drive cylinder drives the bridge housing to approach the reducer assembly, connects it to the reducer assembly through the flange on the bridge housing, and then connects the two half-axles to the rotating shaft of the load mechanism. The driving end of the third drive cylinder drives the sliding shaft, rotating shaft and half-axle to move in the direction of the reducer assembly, and makes the half-axle penetrate into the reducer assembly and into the bridge housing, that is, the installation of the half-axle bridge housing connection mechanism and the load mechanism is completed, and finally lubricating oil is injected into the bridge housing.

[0013] 3) Noise test: Connect a decibel meter near the reducer assembly, and use the drive motor and the reducer assembly to drive the half-shaft and the rotating shaft to rotate. The disc brake disc and the disc brake caliper can load the half-shaft. The decibel meter can be used to test the noise conditions of the reducer assembly during differential, load, and coasting.

[0014] As a further improvement of the above technical solution:

[0015] The decibel meter is installed 300mm above the reducer assembly.

[0016] The beneficial effects of the present invention are as follows: the electric locomotive reducer assembly noise testing device and the testing method thereof first press the reducer assembly onto the rotating seat of the transmission mechanism and connect the drive motor, then connect the bridge housing to the reducer assembly, then connect the half-shaft to the rotating shaft of the load mechanism, then drive the half-shaft to move through the sliding shaft to connect the half-shaft to the reducer assembly, and finally inject lubricating oil through the refueling port to increase the load through the load mechanism, so as to test the noise of the reducer assembly during differential, load and sliding. Only one person is needed to complete the test, and the test installation and operation are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the electric locomotive reducer assembly noise testing device provided by the present invention.

[0018] Figure 2 This is a structural schematic diagram of the transmission mechanism of the electric locomotive reducer assembly noise testing device provided by the present invention.

[0019] Figure 3 A cross-sectional view of the transmission mechanism of the electric locomotive reducer assembly noise testing device provided by the present invention.

[0020] Figure 4 A cross-sectional view of a load mechanism of a noise testing device for a locomotive reducer assembly provided by the present invention.

[0021] Figure 5 This is a schematic diagram of the connection between the load mechanism and the guide seat of the electric locomotive reducer assembly noise testing device provided by the present invention.

[0022] Figure 6 A schematic structural diagram of a bridge housing of a noise testing device for a locomotive reducer assembly provided by the present invention.

[0023] Figure 7 A cross-sectional view of a bridge housing of a noise testing device for a locomotive reducer assembly provided by the present invention.

[0024] Figure 8 This is a schematic diagram of the connection between the bridge housing and the reducer of the electric locomotive reducer assembly noise testing device provided by the present invention.

[0025] In the figure: 1. frame; 11. longitudinal guide groove; 2. reducer connecting mechanism; 21. transmission mechanism; 211. rotating seat; 212. motor connecting flange seat; 22. first driving cylinder; 23. driving motor; 3. reducer assembly; 4. half-axle bridge housing connecting mechanism; 41. bridge housing; 411. refueling port; 412. drain valve; 42. half-axle; 43. second driving cylinder; 44. longitudinal guide seat; 5. load mechanism; 51. sliding shaft; 52. rotating shaft; 521. disc brake; 53. third driving cylinder; 54. disc brake caliper; 55. transverse guide seat; 551. guide sleeve; 552. base. DETAILED DESCRIPTION

[0026] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 8As shown, the electric locomotive reducer assembly noise testing device of this embodiment includes a frame 1, a reducer connecting mechanism 2 is connected to the frame 1, the reducer connecting mechanism 2 includes a transmission mechanism 21, the transmission mechanism 21 includes a rotating seat 211, the rotating seat 211 is rotatably connected to the motor connecting flange seat 212, the reducer assembly 3 is pressed on the rotating seat 211 through a first driving cylinder 22, three connecting holes with different distances from the rotation center are respectively opened on the mounting surface of the rotating seat 211, and different reducer assemblies 3 can be fixedly connected to the mounting surface of the rotating seat 211 through different connecting holes, the motor connecting flange seat 212 is connected to the drive motor 23, and the driving end of the drive motor 23 is connected to the reducer assembly 3, and the frame 1 is connected to a half-axle bridge housing connecting mechanism 4 arranged vertically with the reducer connecting mechanism 2, and the half-axle bridge housing connecting mechanism 4 includes a bridge housing 41 connected to the reducer assembly 3, and the bridge housing 41 is connected to a refueling port 411 and an oil drain valve 412 at the top and bottom. Two movable half shafts 42 are passed through the two sides of the bridge housing 41. The bridge housing 41 is connected to the longitudinal guide seat 44 through the connecting seat. The longitudinal guide seat 44 is passed through the longitudinal guide groove 11 provided in the frame 1. The bridge housing 41 is also connected to the driving end of the second driving cylinder 43. The bridge housing 41 can be driven to move longitudinally by the second driving cylinder 43. The frame 1 is located on both sides of the half-axle bridge housing connection mechanism 4. The load mechanism 5 is connected. The load mechanism 5 includes a sliding shaft 51, which is passed through the frame 1. The transverse guide seat 55 connected to the upper part includes a guide sleeve 551 that allows the sliding shaft 51 to pass through, and the guide sleeve 551 is connected to the frame 1 through the base 552. One end of the sliding shaft 51 close to the half-axle bridge housing connection mechanism 4 is rotatably connected to the rotating shaft 52 used to connect the half-axle 42, and the other end of the sliding shaft 51 is connected to the driving end of the third driving cylinder 53. The rotating shaft 52 is connected to a disc brake disc 521, and the sliding shaft 51 is connected to a disc brake caliper 54 in cooperation with the disc brake disc 521.

[0028] The electric locomotive reducer assembly noise testing method of this embodiment includes the following steps:

[0029] 1) Installation of the reduction assembly: The reduction assembly 3 is pressed onto the rotating seat 211 of the transmission mechanism 21 through the positioning seat on the driving end of the first driving cylinder 22, and the rotating seat 211 can be fixedly connected through the connecting bolts passing through the connecting holes, and the reduction assembly 3 is connected to the driving end of the driving motor 23. After the reduction assembly 3 is installed, the reduction assembly 3 can be driven to rotate a certain angle by rotating the rotating seat 211, and the direction of the reduction assembly 3 can be adjusted (the reduction assembly 3 can be simulated to be horizontal, tilted 10°, and other usage states);

[0030] 2) Installation of the half-axle bridge housing connection mechanism and the load mechanism: The second driving cylinder 43 drives the bridge housing 41 close to the reducer assembly 3, and connects it to the reducer assembly 3 through the flange on the bridge housing 41, and then connects the two half-axles 42 to the rotating shaft 52 of the load mechanism 5. The driving end of the third driving cylinder 53 drives the sliding shaft 51, the rotating shaft 52 and the half-axle 42 to move in the direction of the reducer assembly 3, and makes the half-axle 42 penetrate into the reducer assembly 3 and to the bridge housing 41, that is, the installation of the half-axle bridge housing connection mechanism and the load mechanism is completed, and finally lubricating oil is injected into the bridge housing 41.

[0031] 3) Noise test: connect a decibel meter at a position 300mm above the reducer assembly 3, and drive the half-shaft 42 and the rotating shaft 52 to rotate through the drive motor 23 in cooperation with the reducer assembly 3. The half-shaft 42 can be loaded with load through the disc brake disc 521 in cooperation with the disc brake caliper 54. The noise conditions of the reducer assembly 3 during differential, load, and coasting can be tested by the decibel meter. After the test is completed, drain the lubricating oil through the drain valve 412, and disassemble and reset each component.

[0032] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the basic structure of the present invention.

Claims

1. A noise testing device for a locomotive reducer assembly, characterized in that: The invention comprises a frame (1), the frame (1) is connected to a reducer connecting mechanism (2), the reducer connecting mechanism (2) comprises a transmission mechanism (21), the transmission mechanism (21) comprises a rotating seat (211), the rotating seat (211) is rotatably connected to a motor connecting flange seat (212), a reducer assembly (3) is pressed onto the rotating seat (211) via a first driving cylinder (22), the motor connecting flange seat (212) is connected to a driving motor (23), a driving end of the driving motor (23) is connected to the reducer assembly (3), the frame (1) is connected to a half-axle bridge housing connecting mechanism (4) arranged vertically to the reducer connecting mechanism (2), the half-axle bridge housing connecting mechanism (4) comprises a bridge housing (41) connected to the reducer assembly (3), the bridge housing The upper and lower parts of the housing (41) are connected to a refueling port (411) and an oil drain valve (412); two movable half shafts (42) are passed through the two sides of the housing (41); the housing (41) is also connected to the driving end of a second driving cylinder (43); the frame (1) is located on both sides of the half-shaft bridge housing connection mechanism (4) and is connected to a load mechanism (5); the load mechanism (5) comprises a sliding shaft (51); one end of the sliding shaft (51) close to the half-shaft bridge housing connection mechanism (4) is rotatably connected to a rotating shaft (52) for connecting the half-shaft (42); the other end of the sliding shaft (51) is connected to the driving end of a third driving cylinder (53); a disc brake disc (521) is connected to the rotating shaft (52); and a disc brake caliper (54) is connected to the sliding shaft (51) in cooperation with the disc brake disc (521).

2. The electric locomotive reducer assembly noise testing device according to claim 1 is characterized in that: Three connection holes with different distances from the rotation center are respectively provided on the installation surface of the rotating seat (211), and different reducer assemblies (3) can be connected to the installation surface of the rotating seat (211) through the different connection holes.

3. The electric locomotive reducer assembly noise testing device according to claim 1, characterized in that: The bridge housing (41) is connected to a longitudinal guide seat (44) via a connecting seat, and the longitudinal guide seat (44) is inserted into a longitudinal guide groove (11) provided in the frame (1).

4. The electric locomotive reducer assembly noise testing device according to claim 1 is characterized in that: The sliding shaft (51) is inserted into a transverse guide seat (55) connected to the frame (1); the transverse guide seat (55) comprises a guide sleeve (551) that allows the sliding shaft (51) to pass through; and the guide sleeve (551) is connected to the frame (1) via a base (552).

5. A method for testing the noise of a locomotive reducer assembly, comprising the following steps: 1) Installation of the reduction assembly: The reduction assembly (3) is pressed onto the rotating seat (211) of the transmission mechanism (21) through the driving end of the first driving cylinder (22); the rotating seat (211) can be rotated to adjust the orientation angle of the reduction assembly (3) according to the required test conditions, and the reduction assembly (3) is connected to the driving end of the driving motor (23); 2) Installation of the half-axle bridge housing connection mechanism and the load mechanism: The second driving cylinder (43) drives the bridge housing (41) to approach the reducer assembly (3), and connects the bridge housing (41) to the reducer assembly (3) through the flange on the bridge housing (41), and then connects the two half-axles (42) to the rotating shaft (52) of the load mechanism (5). The driving end of the third driving cylinder (53) drives the sliding shaft (51), the rotating shaft (52) and the half-axle (42) to move toward the reducer assembly (3), and makes the half-axle (42) penetrate into the reducer assembly (3) and toward the bridge housing (41), that is, the installation of the half-axle bridge housing connection mechanism and the load mechanism is completed, and finally lubricating oil is injected into the bridge housing (41). 3) Noise test: A decibel meter is connected near the reducer assembly (3), and the drive motor (23) cooperates with the reducer assembly (3) to drive the half shaft (42) and the rotating shaft (52) to rotate. The disc brake disc (521) cooperates with the disc brake caliper (54) to load the half shaft (42). The decibel meter can be used to test the noise conditions of the reducer assembly (3) under differential speed, load, and sliding.

6. The electric locomotive reducer assembly noise testing method according to claim 5, characterized in that: The decibel meter is installed at a position 300 mm above the reducer assembly (3).

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