Mountain rack rail driving gearbox testing device

Abstract

The utility model relates to a mountainous region rack rail driving gear box test device. The test device comprises a driving motor, a step-up gear box, an input torque measuring instrument, a test gear box, a loading gear shaft, an output torque measuring instrument and a loading motor which are in transmission connection in sequence. An output shaft of the test gear box is provided with an open rack wheel, and the open rack wheel is engaged with a gear on the loading gear shaft. The step-up gear box, the input torque measuring instrument, the test gear box, the loading gear shaft and the output torque measuring instrument are all mounted on the bottom plate; the test device further comprises a base, the top face of the base is arranged to be an inclined plane, and the bottom plate is placed on the top face of the base so that the test gear box can incline to the preset direction and angle. The running state of the gear box during mountain rack rail driving is well simulated, and the loading running performance and the transmission efficiency of the mountain rack rail driving gear box on the slope can be verified.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box testing, in particular to a mountain rack drive gear box testing device. Background Art

[0002] With the rapid development of cities, in order to meet the people's growing demand for quality of life, develop mountain tourism, improve the travel of people in mountainous areas, and drive local economic development, the development of mountain rail transit has become very important. At present, mountain rail transit vehicles are in the research and development stage. In order to meet the needs of strong climbing ability, fast speed, long line, interconnection with transmission railways, and low construction cost, the main research and development of rack system vehicles is to have a climbing ability of up to 250‰. The key technology for the successful development of this vehicle is the driving gearbox of the bogie. The output gear of the driving gearbox is an open rack wheel. The open rack wheel is used to mesh with the rack on the track to drive the vehicle to run on the slope. The type test verification of the gearbox is a necessary requirement for the operation of the bogie; since the mountain rack drive gearbox needs to run in a slope state, there is no test device for type test verification of the mountain rack drive gearbox in a slope state in the prior art, and it is impossible to verify the loading operation performance and transmission efficiency of the mountain rack drive gearbox on the slope. Utility Model Content

[0003] The purpose of the utility model is to provide a mountain rack drive gearbox test device to address the problem that there is no test device in the prior art for performing type test verification on a mountain rack drive gearbox under a slope state, resulting in an inability to verify the loaded operating performance and transmission efficiency of the mountain rack drive gearbox on a slope.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A mountain rack drive gearbox test device comprises a driving motor, a speed increasing gearbox, an input torque meter, a test gearbox, a loading gear shaft, an output torque meter and a loading motor which are sequentially connected in transmission; an open rack wheel is arranged on the output shaft of the test gearbox, and the open rack wheel is meshed with a gear on the loading gear shaft; the speed increasing gearbox, the input torque meter, the test gearbox, the loading gear shaft and the output torque meter are all mounted on a bottom plate; and a base is also included, the top surface of which is arranged as an inclined plane, and the bottom plate is placed on the top surface of the base, so that the test gearbox is tilted to a preset direction and angle.

[0006] The utility model adopts the above-mentioned technical solution, by setting a driving motor, a speed-increasing gearbox, an input torque meter, a test gearbox, a loading gear shaft, an output torque meter and a loading motor which are sequentially connected in transmission, the driving motor provides power, the speed-increasing gearbox increases the speed and reduces the torque to reach the test speed required by the test gearbox, the test gearbox realizes power output through an open rack wheel, the gear on the loading gear shaft simulates the rack on the mountain rack track and meshes with the open rack wheel, the loading gear shaft is loaded by the loading motor to increase the load on the test gearbox, and the test of various working conditions of the test gearbox is realized; the input torque meter and the output torque meter are set to detect the input and output torque, so as to verify Verify the transmission efficiency of the test gearbox; place the bottom plate on the top surface of the base so that the test gearbox is tilted to a preset direction and angle to simulate the test gearbox running on a slope; compared with the prior art, there is no test device for type testing and verification of the mountain rack drive gearbox under a slope, which leads to the problem that the loading operation performance and transmission efficiency of the mountain rack drive gearbox on a slope cannot be verified. The utility model provides a set of test devices for type testing and verification of the mountain rack drive gearbox under a slope, which well simulates the operating state of the gearbox when driven by a mountain rack, and can verify the loading operation performance and transmission efficiency of the mountain rack drive gearbox on a slope.

[0007] Furthermore, the driving motor is connected to the input shaft of the speed-increasing gearbox through a coupling mechanism, and the loading motor is connected to the output torque meter through a coupling mechanism; the coupling mechanism is a universal coupling or a drum-shaped tooth spline sleeve assembly; when the base plate is tilted, it may cause an axial angle between the input shaft of the speed-increasing gearbox and the output shaft of the driving motor, and between the output shaft of the loading motor and the output torque meter. By using a universal coupling or a drum-shaped tooth spline sleeve assembly for connection, the two connected shafts can be continuously rotated when there is an axial angle between the two connected shafts, that is, the transmission connection can be achieved without adjusting the output shaft directions of the driving motor and the loading motor, thereby simplifying the operation and improving the test efficiency.

[0008] Furthermore, the drum-shaped tooth spline sleeve assembly includes two spline sleeves and a spline shaft connected therebetween, the two spline sleeves are axially spaced apart, a circle of drum-shaped teeth is respectively provided on the side surfaces at both ends of the spline shaft, respectively meshing with the two spline sleeves; the two spline sleeves are provided with flange covers at one end away from the spline shaft; the flange covers on the two spline sleeves are respectively used to be fixedly connected to the parts to be connected at both ends, and since the spline shaft is provided with drum-shaped teeth, when there is a certain axial angle between the two spline sleeves, the rotational transmission of the two spline sleeves can still be achieved.

[0009] Furthermore, the centerline of the output shaft of the speed-increasing gearbox is colinear with the centerline of the input shaft of the test gearbox, the input shaft and output shaft of the speed-increasing gearbox, the output shaft of the test gearbox and the loading gear shaft are all parallel to each other and to the base plate; the driving motor and the loading motor are both placed horizontally, and the output shafts of both are in the horizontal direction.

[0010] Furthermore, it also includes a fixed support and a transmission connecting piece, the two ends of the transmission connecting piece are respectively connected to the input shaft of the test gearbox and the input torque meter, the bottom of the fixed support is fixedly installed on the base plate, and the top is provided with a mounting hole parallel to the base plate, the transmission connecting piece passes through the mounting hole and is rotatably installed in the mounting hole through a bearing; due to the structural limitations of the speed-increasing gearbox and the test gearbox, the span between the two is relatively large, and the input shaft of the test gearbox and the input torque meter are connected by setting a transmission connecting piece, and a fixed support is set at the input end of the test gearbox to form a rigid support, thereby reducing the influence of deflection on the input end, and solving the test risk of the input shaft caused by the large span and high input speed resulting in large deflection of the intermediate connection.

[0011] Furthermore, the input torque meter and the transmission connection are connected via a diaphragm coupling, and both ends of the diaphragm coupling are flange-connected to the input torque meter and the transmission connection respectively; the diaphragm coupling is a flexible connection to avoid the impact of startup or non-stop operating condition change on the gearbox.

[0012] Furthermore, a mounting bracket is provided on the bottom plate, and both ends of the output shaft of the test gear box and both ends of the loading gear shaft are mounted on the mounting bracket.

[0013] Furthermore, support frames are provided between the input torque meter and the output torque meter and the base plate, so that the two are firmly connected on the base plate. At the same time, such a configuration increases the rigidity of the output end of the speed-increasing gearbox, and also reduces the test risk of the output shaft of the speed-increasing gearbox caused by large span and high input speed resulting in large deflection of the intermediate connection.

[0014] The beneficial effects of the utility model are as follows: a test device for type testing and verification of a mountain rack drive gearbox under a slope state is provided, which well simulates the operating state of the gearbox when driven by a mountain rack, and can verify the loading operating performance and transmission efficiency of the mountain rack drive gearbox on a slope; the gear of the loading gear shaft is set to simulate the rack on the mountain rack track, which is used to load the test gearbox; the bottom plate is placed on a base with an inclined top surface, so that the test gearbox is tilted to a preset direction and angle, thereby simulating the operation of the test gearbox under a slope state; the transmission connection can be achieved without adjusting the output shaft direction of the driving motor and the loading motor, which simplifies the operation and improves the test efficiency; a rigid support is formed at the output end of the speed-increasing gearbox and the input end of the test gearbox, which reduces the influence of deflection and solves the test risk of large deflection of the intermediate connection caused by large span and high input speed to the output shaft of the speed-increasing gearbox and the input shaft of the test gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the utility model;

[0016] Figure 2 for Figure 1 Middle AA section view;

[0017] Figure 3 It is a schematic diagram of the matching state between the bottom plate and the base;

[0018] Figure 4 It is a schematic diagram of the matching state of the bottom plate and the base after the tilting direction is changed;

[0019] Figure 5 is a cross-sectional view of a drum-shaped tooth spline sleeve assembly;

[0020] Figure 6 It is a front view of the fixed support and the connecting shaft;

[0021] Figure 7 for Figure 5 A longitudinal cross-sectional view of

[0022] Figure 8 It is a top view (partial section) of the fixed support and transmission connection.

[0023] Markings in the figure: 1-driving motor, 2-universal coupling, 3-base plate, 4-speed increasing gearbox, 5-input torque meter, 6-diaphragm coupling, 7-fixed support, 8-test gearbox, 9-loading gear shaft, 10-output torque meter, 11-drum gear spline sleeve assembly, 12-loading motor, 13-base, 14-mounting bracket, 15-support frame, 16-spline sleeve, 17-spline shaft, 18-flange cover, 19-transmission connecting piece, 20-connecting shaft, 21-first flange, 22-second flange, 23-third flange, 24-bearing, 81-output shaft, 82-open rack wheel. DETAILED DESCRIPTION

[0024] The utility model is described in detail below in conjunction with the accompanying drawings.

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The utility model provides a mountain rack drive gearbox test device, such as Figure 1-Figure 4 As shown, it includes a driving motor 1, a speed increasing gearbox 4, an input torque meter 5, a test gearbox 8, a loading gear shaft 9, an output torque meter 10 and a loading motor 12 which are sequentially connected in transmission; an open rack wheel 82 is provided on the output shaft 81 of the test gearbox 8, and the open rack wheel 82 is meshed with the gear on the loading gear shaft 9; the speed increasing gearbox 4, the input torque meter 5, the test gearbox 8, the loading gear shaft 9 and the output torque meter 10 are all installed on the base plate 3; it also includes a base 13, the top surface of which is set as an inclined plane, and the base plate 3 is placed on the top surface of the base 13, so that the test gearbox 8 is tilted to a preset direction and angle; the preset direction and angle refer to the direction and angle of tilt when the simulated test gearbox 8 is actually running; the tooth width of the gear on the loading gear shaft 9 is the same as the tooth width of the rack on the mountain rack track, and the loading of the test gear shaft 9 by the loading motor 12 is realized to simulate the loading of the test gearbox 8 to simulate the line operation;

[0027] The driving motor 1 is connected to the input shaft of the speed increasing gearbox 4 through a coupling mechanism, and the loading motor 12 is connected to the output torque meter 10 through a coupling mechanism; the coupling mechanism is a universal coupling 2 or a drum gear spline sleeve assembly 11;

[0028] like Figure 5As shown, the drum-shaped tooth spline sleeve assembly 11 includes two spline sleeves 16 and a spline shaft 17 connected therebetween. The two spline sleeves 16 are axially spaced apart. The two ends of the spline shaft 17 are each provided with a circle of drum-shaped teeth on the side surfaces thereof, which are respectively engaged with the two spline sleeves 16. The two spline sleeves 16 are each provided with a flange cover 18 at one end away from the spline shaft 17.

[0029] The center line of the output shaft of the speed increasing gearbox 4 is colinear with the center line of the input shaft of the test gearbox 8. The input shaft and output shaft of the speed increasing gearbox 4, the output shaft 81 of the test gearbox 8 and the loading gear shaft 9 are parallel to each other and parallel to the bottom plate 3. The driving motor 1 and the loading motor 12 are both placed horizontally, and the output shafts of both are in the horizontal direction.

[0030] It also includes a fixed support 7 and a transmission connection member 19, the two ends of the transmission connection member 19 are respectively connected to the input shaft of the test gear box 8 and the input torque meter 5, the bottom of the fixed support 7 is fixedly mounted on the bottom plate 3, and the top is provided with a mounting hole parallel to the bottom plate 3, the transmission connection member 19 passes through the mounting hole and is rotatably mounted in the mounting hole through a bearing 24; the transmission connection member 19 and the input torque meter 5 can be directly connected or indirectly connected. In this embodiment, the input torque meter 5 and the transmission connection member 19 are indirectly connected through a diaphragm coupling 6, and the two ends of the diaphragm coupling 6 are flange-connected to the input torque meter 5 and the transmission connection member 19 respectively;

[0031] like Figure 6-Figure 8 As shown, the transmission connection member 19 includes a connecting shaft 20, a first flange 21 and a second flange 22. The connecting shaft 20 is installed in the mounting hole of the fixed support 7 through a bearing 24. The right end of the first flange 21 is fixedly connected to the left end of the connecting shaft 20, and the left end of the first flange 21 is flange-connected to the diaphragm coupling 6. The right end of the connecting shaft 20 has a hole, and an internal spline is provided in the hole. The left end of the second flange 22 forms a spline shaft, which penetrates into the hole and cooperates with the internal spline. A third flange 23 is fixedly provided on the input shaft of the test gearbox 8, and the right end of the second flange 22 is fixedly connected to the third flange 23.

[0032] In this embodiment, the specific connection relationship is: the driving motor 1 is connected to the input shaft of the speed increasing gearbox 4 through the universal coupling 2, the output shaft of the speed increasing gearbox 4 is connected to one end of the input torque meter 5 through a flange, the other end of the input torque meter 5 is flange-connected to the diaphragm coupling 6, the other end of the diaphragm coupling 6 is connected to the first flange 21 of the transmission connection 19, and the second flange 22 of the transmission connection 19 is connected to the third flange 23; one end of the loading gear shaft 9 is provided with a flange, which is connected to one end of the output torque meter 10, and the other end of the output torque meter 10 is connected to the output shaft of the loading motor 12 through the drum gear spline sleeve assembly 11;

[0033] In this embodiment, the inclination angle of the top surface of the base 13 is 14° and the slope is 250‰; during the test, two inclination directions are set for the base 13 to test the test gearbox 8 respectively, one of which is: from Figure 2 Looking from the middle B direction, Figure 3 As shown, the base 13 is tilted to the right; another direction is: from Figure 2 Looking from the middle B direction, Figure 4 As shown, the base 13 is tilted to the left; to change the tilt direction of the base 13, the base 13 can be rotated 180°;

[0034] A mounting bracket 14 is provided on the bottom plate 3, and both ends of the output shaft 81 of the test gear box 8 and both ends of the loading gear shaft 9 are mounted on the mounting bracket 14;

[0035] A support frame 15 is provided between the input torque meter 5 and the output torque meter 10 and the bottom plate 3 .

[0036] The utility model provides a test device for performing type test verification of a mountain rack drive gear box under a slope state, which well simulates the operating state of the gear box when driven by a mountain rack, and can verify the loading operating performance and transmission efficiency of the mountain rack drive gear box on a slope; the gear of the loading gear shaft is simulated by arranging a rack on a mountain rack track, which is used to load the test gear box; the bottom plate is placed on a base with an inclined top surface, so that the test gear box is tilted to a preset direction and angle, thereby simulating the operation of the test gear box under a slope state; the transmission connection can be achieved without adjusting the output shaft directions of the driving motor and the loading motor, which simplifies the operation and improves the test efficiency; a rigid support is formed at the output end of the speed-increasing gear box and the input end of the test gear box, which reduces the influence of deflection and solves the test risk of large deflection of the intermediate connection caused by a large span and a high input speed to the output shaft of the speed-increasing gear box and the input shaft of the test gear box.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mountain rack drive gearbox test device, characterized in that: The invention comprises a driving motor (1), a speed increasing gear box (4), an input torque meter (5), a test gear box (8), a loading gear shaft (9), an output torque meter (10) and a loading motor (12) which are sequentially connected in transmission; an open rack wheel (82) is provided on the output shaft (81) of the test gear box (8), and the open rack wheel (82) is meshed with a gear on the loading gear shaft (9); the speed increasing gear box (4), the input torque meter (5), the test gear box (8), the loading gear shaft (9) and the output torque meter (10) are all mounted on a bottom plate (3); and the invention also comprises a base (13), the top surface of which is arranged as an inclined plane, and the bottom plate (3) is placed on the top surface of the base (13), so that the test gear box (8) is inclined to a preset direction and angle.

2. The mountain rack drive gearbox testing device according to claim 1, characterized in that: The driving motor (1) is connected to the input shaft of the speed increasing gearbox (4) through a coupling mechanism, and the loading motor (12) is connected to the output torque measuring instrument (10) through a coupling mechanism; the coupling mechanism is a universal coupling (2) or a drum gear spline sleeve assembly (11).

3. The mountain rack drive gearbox testing device according to claim 2, characterized in that: The drum-shaped tooth spline sleeve assembly (11) comprises two spline sleeves (16) and a spline shaft (17) connected therebetween. The two spline sleeves (16) are axially spaced apart. The two end sides of the spline shaft (17) are each provided with a circle of drum-shaped teeth, which are respectively meshed with the two spline sleeves (16). The two ends of the two spline sleeves (16) away from the spline shaft (17) are each provided with a flange cover (18).

4. The mountain rack drive gearbox testing device according to claim 2, characterized in that: The centerline of the output shaft of the speed-increasing gearbox (4) is colinear with the centerline of the input shaft of the test gearbox (8); the input shaft and output shaft of the speed-increasing gearbox (4), the output shaft (81) of the test gearbox (8) and the loading gear shaft (9) are all parallel to each other and to the base plate (3); the driving motor (1) and the loading motor (12) are both placed horizontally, and the output shafts of both are in the horizontal direction.

5. The mountain rack drive gearbox testing device according to claim 4, characterized in that: It also includes a fixed support (7) and a transmission connection member (19), the two ends of the transmission connection member (19) are respectively connected to the input shaft of the test gear box (8) and the input torque meter (5), the bottom of the fixed support (7) is fixedly mounted on the base plate (3), and the top is provided with a mounting hole parallel to the base plate (3), and the transmission connection member (19) passes through the mounting hole and is rotatably mounted in the mounting hole through a bearing (24).

6. The mountain rack drive gearbox testing device according to claim 5, characterized in that: The input torque meter (5) and the transmission connection member (19) are connected via a diaphragm coupling (6), and two ends of the diaphragm coupling (6) are flange-connected to the input torque meter (5) and the transmission connection member (19) respectively.

7. The mountain rack drive gearbox testing device according to claim 1, characterized in that: A mounting bracket (14) is provided on the base plate (3), and both ends of the output shaft (81) of the test gear box (8) and both ends of the loading gear shaft (9) are mounted on the mounting bracket (14).

8. The mountain rack drive gearbox testing device according to claim 1, characterized in that: A support frame (15) is provided between the input torque meter (5) and the output torque meter (10) and the bottom plate (3).

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