Multifunctional adjustable differential device for wheel rail adhesion testing equipment

Abstract

The invention relates to a multifunctional adjustable differential device for wheel-rail adhesion testing equipment, which comprises a shell and a base connected with the shell, a main power input assembly, a first planetary transmission assembly, a middle transmission assembly, a second planetary transmission assembly and a power output assembly which are sequentially connected and transmitted are arranged in the shell, and a differential adjusting assembly is arranged in the base. The differential adjusting assembly comprises two speed adjusting input ends and a speed adjusting output end, and the speed adjusting output end is in transmission connection with the second planetary transmission assembly. The wheel track adhesion testing device has the advantages that the 1: 1 differential speed requirement during straight line driving simulation can be met, the rotating speed difference can be accurately adjusted, then the curve driving working condition is simulated, and the wheel track adhesion testing device can simulate a locomotive to conduct tests on the straight line working condition and the curve working condition.

Description

Technical Field

[0001] The invention relates to the technical field of wheel-rail adhesion test equipment, and in particular to a multifunctional adjustable differential device used for wheel-rail adhesion test equipment. Background Art

[0002] Wheel-rail adhesion test equipment usually requires the use of differentials. Currently, traditional differentials are mainly divided into three types: NGW differential, WW differential and bevel gear differential. NGW differential is an active differential with a differential ratio of 3.5-5.5, and the speed is adjusted by the speed regulating motor driving the inner ring gear; WW differential is an active differential with a differential ratio of 1.8-3, and the speed is adjusted by the speed regulating motor driving the planetary carrier to rotate; bevel gear differential is a passive differential with a differential ratio of 1-2, and the differential function is automatically realized by the change in the torque transmitted by the left and right shafts. Most of the differentials on cars are of this type. However, none of the above three differentials can simultaneously meet the 1:1 synchronous speed and speed difference precision adjustment functions required by the wheel-rail adhesion test equipment.

[0003] Therefore, how to design a differential gearbox that can meet the 1:1 differential requirement when driving in a straight line, realize the active differential function when driving on a curve, and at the same time be able to test the locomotive in a straight line and on a curve, is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multifunctional adjustable differential device for a wheel-rail adhesion test device, which can not only meet the 1:1 differential requirement when simulating straight-line driving, but also realize precise adjustment of the speed difference, thereby simulating curved driving conditions, so that the wheel-rail adhesion test device can simulate locomotives to test straight-line and curved conditions.

[0005] The purpose of the present invention is achieved through the following technical solutions: A multifunctional adjustable differential device for wheel-rail adhesion testing equipment comprises a shell and a base connected to the shell. A main power input assembly, a first planetary transmission assembly, an intermediate transmission assembly, a second planetary transmission assembly, and a power output assembly which are sequentially connected for transmission are arranged in the shell. A differential adjustment assembly is arranged in the base. The differential adjustment assembly comprises two speed regulation input ends and one speed regulation output end. The speed regulation output end is connected to the second planetary transmission assembly for transmission.

[0006] Furthermore, the main power input assembly includes a main input shaft, a driving internal gear, a main transmission shaft, and a main transmission gear. One end of the main input shaft is arranged on one side of the shell through a ball bearing, and the other end of the main input shaft extends out of the shell. A first socket is provided at the end of the main input shaft located in the shell, and the driving internal gear is fixed in the first socket. One end of the main transmission shaft is inserted into the first socket and meshes with the driving internal gear through the main transmission gear. The other end of the main transmission shaft is connected for transmission with the first planetary transmission assembly through the main transmission gear. An anti-impact pad is provided at the bottom of the socket, and the main transmission shaft abuts against the anti-impact pad.

[0007] Furthermore, the first planetary transmission assembly includes a first planetary carrier, a first planetary shaft, and a first planetary gear. The first planetary carrier is rotatably arranged in the housing through a ball bearing, the first planetary shaft is fixed on the first planetary carrier, the first planetary gear is arranged on the first planetary shaft through a cylindrical roller bearing and meshes with the main drive gear, and the first planetary internal gear connected to the intermediate transmission assembly for transmission is fixed on the first planetary carrier.

[0008] Furthermore, the intermediate transmission assembly includes an intermediate transmission shaft and an intermediate transmission gear, one end of the intermediate transmission shaft is meshed with the first planetary internal gear through the intermediate transmission gear, and the other end of the intermediate transmission shaft is connected to the second planetary transmission assembly for transmission through the intermediate transmission gear.

[0009] Furthermore, the second planetary transmission assembly includes a second planetary carrier, a second planetary shaft, a second planetary gear, an inner and outer gear ring, and a gear ring connecting plate. The gear ring connecting plate is rotatably arranged in the housing through a ball bearing. The inner and outer gear rings are fixed to the gear ring connecting plate and are connected to the differential adjustment assembly for transmission. The second planetary carrier is arranged on the gear ring connecting plate through a ball bearing. A second planetary internal gear meshing with the intermediate transmission gear is fixed on the second planetary carrier. The second planetary shaft is fixed to the second planetary carrier. The second planetary gear is arranged on the second planetary shaft through a cylindrical roller bearing. The second planetary gear is meshed with the inner and outer gear rings and is connected to the power output assembly for transmission.

[0010] Furthermore, the power output assembly includes an output transmission shaft, an output transmission gear, a power output shaft, and an output internal gear. One end of the power output shaft is arranged on a side of the shell opposite to the main input shaft through a ball bearing, and the other end of the power output shaft extends out of the shell. A second socket is provided at one end of the power output shaft located in the shell, and the output internal gear is fixed in the second socket. One end of the output transmission shaft is inserted into the second socket and meshed with the output internal gear through the output transmission gear, and the other end of the output transmission shaft meshes with the second planetary gear through the output transmission gear.

[0011] Furthermore, the differential adjustment component includes a speed control input shaft, a speed control transmission shaft, a speed control input gear, a speed control transmission gear, and a speed control output gear. The speed control input shaft and the speed control transmission shaft are both arranged in the base through roller bearings. Both ends of the speed control input shaft are speed control input ends and extend out of the base. The speed control input gear is arranged on the speed control input shaft in the base. The speed control transmission gear is arranged on the speed control transmission shaft and meshes with the speed control input gear. The speed control output gear is arranged on the speed control transmission shaft. The speed control output gear is the speed control output end and meshes with the inner and outer gear rings.

[0012] Furthermore, a mounting plate sleeved on the periphery of the main input shaft is fixed to the outer wall of the shell, and the mounting plate is connected to the external driving device through external bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can input power through an external drive device of the main power input component through the arrangement of the main power input component, the first planetary transmission component, the intermediate transmission component, the second planetary transmission component, the power output component, and the differential adjustment component. Then, power is output through the power output component under the sequential transmission of the first planetary transmission component, the intermediate transmission component, and the second planetary transmission component. In the process of power transmission, two different external power sources can be adjusted through the differential adjustment component, and then the second planetary transmission component can be driven by the differential adjustment component to accurately adjust the speed difference in different ranges, so as to meet the test requirements of the wheel-rail adhesion test device to simulate the locomotive to perform curve working conditions.

[0014] 2. The present invention can directly input power through the differential adjustment assembly through the arrangement of the second planetary transmission assembly, the power output assembly, and the differential adjustment assembly, and then output power through the power output assembly under the transmission of the second planetary transmission assembly, thereby achieving a 1:1 synchronous speed, so as to meet the test requirements of the wheel-rail adhesion test device to simulate the straight-line working condition of the locomotive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] In the figure: 1. housing; 2. base; 3. main input shaft; 4. driving internal gear; 5. main transmission shaft; 6. main transmission gear; 7. anti-impact pad; 8. first planetary carrier; 9. first planetary shaft; 10. first planetary gear; 11. first planetary internal gear; 12. intermediate transmission shaft; 13. intermediate transmission gear; 14. second planetary carrier; 15. second planetary shaft; 16. second planetary gear; 17. inner and outer gear ring; 18. gear ring connecting plate; 19. second planetary internal gear; 20. output transmission shaft; 21. output transmission gear; 22. power output shaft; 23. output internal gear; 24. speed control input shaft; 25. speed control transmission shaft; 26. speed control input gear; 27. speed control transmission gear; 28. speed control output gear; 29. ​​mounting plate. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0018] like Figure 1 A multifunctional adjustable differential device for a wheel-rail adhesion test device is shown, which can be used for the wheel-rail adhesion test device to perform a variable slip test and a direct transmission test, comprising a housing 1 and a base 2 connected to the housing 1, wherein a main power input assembly, a first planetary transmission assembly, an intermediate transmission assembly, a second planetary transmission assembly, and a power output assembly which are sequentially connected for transmission are arranged in the housing 1, a differential adjustment assembly is arranged in the base 2, and the differential adjustment assembly comprises two speed adjustment input ends and one speed adjustment output end, and the speed adjustment output end is connected to the second planetary transmission assembly for transmission.

[0019] When the variable slip test is performed through the wheel-rail adhesion test equipment, the main power input assembly, the first planetary transmission assembly, the intermediate transmission assembly, the second planetary transmission assembly, the power output assembly, and the differential adjustment assembly are all involved in the work. Specifically, the main power input assembly is connected to the external drive device for power input, and then the power output is performed through the power output assembly under the sequential transmission of the first planetary transmission assembly, the intermediate transmission assembly, and the second planetary transmission assembly. During the power transmission process, the two different external power sources can be adjusted through the differential adjustment assembly, and then the second planetary transmission assembly can be driven by the differential adjustment assembly to accurately adjust the speed difference in different ranges, so as to meet the wheel-rail adhesion test device to achieve the test requirements of simulating the locomotive to perform curve conditions.

[0020] When the direct transmission test is conducted through the wheel-rail adhesion test equipment, the main power input assembly, the first planetary transmission assembly, and the intermediate transmission assembly do not participate in the work, and the second planetary transmission assembly, the power output assembly, and the differential adjustment assembly participate in the work. Specifically, the power is directly input through the differential adjustment assembly, and then the power is output through the power output assembly under the transmission of the second planetary transmission assembly, thereby achieving a 1:1 synchronous speed, so as to meet the wheel-rail adhesion test device to achieve the test requirements of simulating locomotives to perform straight-line working conditions.

[0021] The main power input assembly includes a main input shaft 3, a driving internal gear 4, a main transmission shaft 5, and a main transmission gear 6. One end of the main input shaft 3 is installed on one side of the housing 1 through a ball bearing, and the other end of the main input shaft 3 extends out of the housing 1 for connection with an external drive device such as a clutch and a motor. The end of the main input shaft 3 located in the housing 1 is provided with a first plug hole, and the driving internal gear 4 is fixed in the first plug hole. One end of the main transmission shaft 5 is inserted into the first plug hole and meshes with the driving internal gear 4 through the main transmission gear 6. The other end of the main transmission shaft 5 is connected to the first planetary transmission assembly through the main transmission gear 6 for transmission. A mounting plate 29 sleeved on the periphery of the main input shaft 3 is fixed on the outer wall of the housing 1, and the mounting plate 29 is connected to the external drive device through an external bolt.

[0022] The external drive device as a power source inputs power through the main input shaft 3, and then drives the first planetary assembly to work under the transmission of the active internal gear 4, the main transmission shaft 5, and the main transmission gear 6. An anti-impact pad 7 is provided at the bottom of the jack hole, and the main transmission shaft 5 abuts against the anti-impact pad 7, thereby preventing the main transmission shaft 5 from impacting the main input shaft 3.

[0023] The first planetary transmission assembly includes a first planet carrier 8, a first planet shaft 9, and a first planet gear 10. The first planet carrier 8 is rotatably mounted in the housing 1 via a ball bearing, the first planet shaft 9 is fixed to the first planet carrier 8, the first planet gear 10 is mounted on the first planet shaft 9 via a cylindrical roller bearing and meshes with the main transmission gear 6, the first planetary internal gear 11 connected to the intermediate transmission assembly for transmission is fixed to the first planet carrier 8, the main transmission gear 6 drives the first planet gear 10 to rotate, and then the transmission of the first planet shaft 9, the first planet carrier 8, and the first planetary internal gear 11 drives the intermediate transmission assembly to work.

[0024] The intermediate transmission assembly includes an intermediate transmission shaft 12 and an intermediate transmission gear 13. One end of the intermediate transmission shaft 12 is meshed with the first planetary internal gear 11 through the intermediate transmission gear 13, and the other end of the intermediate transmission shaft 12 is connected for transmission with the second planetary transmission assembly through the intermediate transmission gear 13. The first planetary gear drives the intermediate transmission gear 13 at one end of the intermediate transmission shaft 12 to rotate, and the intermediate transmission shaft 12 then drives the second planetary assembly to work through the intermediate transmission gear 13 at the other end of the intermediate transmission shaft 12.

[0025] The second planetary transmission assembly includes a second planetary carrier 14, a second planetary shaft 15, a second planetary gear 16, an inner and outer gear ring 17, and a gear ring connecting plate 18. The gear ring connecting plate 18 is rotatably arranged in the housing 1 through a ball bearing, the inner and outer gear ring 17 is fixed on the gear ring connecting plate 18 and is connected to the differential adjustment assembly for transmission, the second planetary carrier 14 is arranged on the gear ring connecting plate 18 through a ball bearing, a second planetary internal gear 19 meshing with the intermediate transmission gear 13 is fixed on the second planetary carrier 14, the second planetary shaft 15 is fixed on the second planetary carrier 14, the second planetary gear 16 is installed on the second planetary shaft 15 through a cylindrical roller bearing, the second planetary gear 16 is meshed with the inner and outer gear ring 17 and is connected to the power output assembly for transmission, the intermediate transmission gear 13 drives the second planetary internal gear 19 to rotate, and then drives the power output assembly to work under the transmission of the second planetary carrier 14, the second planetary shaft 15, and the second planetary gear 16.

[0026] The power output assembly includes an output transmission shaft 20, an output transmission gear 21, a power output shaft 22, and an output internal gear 23. One end of the power output shaft 22 is installed on the side of the housing 1 opposite to the main input shaft 3 through a ball bearing, and the other end of the power output shaft 22 extends out of the housing 1 for power output. The end of the power output shaft 22 located in the housing 1 is provided with a second plug hole, and the output internal gear 23 is fixed in the second plug hole. One end of the output transmission shaft 20 is inserted into the second plug hole and meshes with the output internal gear 23 through the output transmission gear 21. The other end of the output transmission shaft 20 is meshed with the second planetary gear 16 through the output transmission gear 21. The second planetary gear 16 drives the output transmission gear 21 at one end of the output transmission shaft 20 to rotate, and the output transmission shaft 20 drives the output internal gear 23 to rotate through the output transmission gear 21 at the other end of the output transmission shaft 20, thereby driving the power output shaft 22 to rotate to achieve power output.

[0027] The differential speed adjustment assembly includes a speed adjustment input shaft 24, a speed adjustment transmission shaft 25, a speed adjustment input gear 26, a speed adjustment transmission gear 27, and a speed adjustment output gear 28. The speed adjustment input shaft 24 and the speed adjustment transmission shaft 25 are both installed in the base 2 through roller bearings, wherein both ends of the speed adjustment input shaft 24 are speed adjustment input ends and extend out of the base 2, the speed adjustment input gear 26 is fixed on the speed adjustment input shaft 24 in the base 2, the speed adjustment transmission gear 27 is fixed on the speed adjustment transmission shaft 25 and meshes with the speed adjustment input gear 26, and the speed adjustment output gear 28 is fixed on the speed adjustment transmission shaft 25, and the speed adjustment output gear 28 is the speed adjustment output end and meshes with the inner and outer gear ring 17. In the process of the external driving device inputting power through the main input shaft 3 and driving the power output shaft 22 to output power, the speed control input shaft 24 is connected to an external power source, and then the inner and outer gear rings 17 are driven to rotate under the transmission of the speed control input gear 26, the speed control transmission gear 27, the speed control transmission shaft 25, and the speed control output gear 28, so that the rotation speed of the second planetary gear 16 is adjusted by the inner and outer gear rings 17, and then the rotation speed of the power output shaft 22 is adjusted to achieve speed difference adjustment. By connecting two different power sources at both ends of the speed control input shaft 24 respectively, precise adjustment of the speed difference in different ranges can be achieved.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional adjustable differential device for a wheel-rail adhesion testing device, comprising a housing (1) and a base (2) connected to the housing (1), characterized in that: A main power input assembly, a first planetary transmission assembly, an intermediate transmission assembly, a second planetary transmission assembly, and a power output assembly are provided in the housing (1), and a differential speed adjustment assembly is provided in the base (2). The differential speed adjustment assembly includes two speed adjustment input ends and a speed adjustment output end, and the speed adjustment output end is connected to the second planetary transmission assembly for transmission.

2. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 1, characterized in that: The main power input assembly comprises a main input shaft (3), a driving internal gear (4), a main transmission shaft (5), and a main transmission gear (6); one end of the main input shaft (3) is arranged on one side of a housing (1) through a ball bearing, and the other end of the main input shaft (3) extends out of the housing (1); a first plug hole is provided at the end of the main input shaft (3) located in the housing (1); the driving internal gear (4) is fixed in the first plug hole; one end of the main transmission shaft (5) is inserted into the first plug hole and meshes with the driving internal gear (4) through the main transmission gear (6); the other end of the main transmission shaft (5) is connected to the first planetary transmission assembly for transmission through the main transmission gear (6); an anti-impact pad (7) is provided at the bottom of the plug hole, and the main transmission shaft (5) abuts against the anti-impact pad (7).

3. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 2, characterized in that: The first planetary transmission assembly comprises a first planet carrier (8), a first planetary shaft (9), and a first planetary gear (10). The first planet carrier (8) is rotatably arranged in a housing (1) via a ball bearing, the first planetary shaft (9) is fixed to the first planet carrier (8), the first planetary gear (10) is arranged on the first planetary shaft (9) via a cylindrical roller bearing and meshes with a main transmission gear (6), and the first planetary internal gear (11) connected to the intermediate transmission assembly for transmission is fixed to the first planet carrier (8).

4. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 3, characterized in that: The intermediate transmission assembly comprises an intermediate transmission shaft (12) and an intermediate transmission gear (13); one end of the intermediate transmission shaft (12) is meshed with the first planetary internal gear (11) via the intermediate transmission gear (13); and the other end of the intermediate transmission shaft (12) is connected to the second planetary transmission assembly for transmission via the intermediate transmission gear (13).

5. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 4, characterized in that: The second planetary transmission assembly comprises a second planetary carrier (14), a second planetary shaft (15), a second planetary gear (16), an inner and outer gear ring (17), and a gear ring connecting plate (18); the gear ring connecting plate (18) is rotatably arranged in the housing (1) via a ball bearing; the inner and outer gear ring (17) is fixed on the gear ring connecting plate (18) and is connected to the differential adjustment assembly for transmission; the second planetary carrier (14) is arranged on the gear ring connecting plate (18) via a ball bearing; a second planetary internal gear (19) meshing with the intermediate transmission gear (13) is fixed on the second planetary carrier (14); the second planetary shaft (15) is fixed on the second planetary carrier (14); the second planetary gear (16) is arranged on the second planetary shaft (15) via a cylindrical roller bearing; the second planetary gear (16) meshes with the inner and outer gear ring (17) and is connected to the power output assembly for transmission.

6. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 5, characterized in that: The power output assembly comprises an output transmission shaft (20), an output transmission gear (21), a power output shaft (22), and an output internal gear (23); one end of the power output shaft (22) is arranged on a side of a housing (1) opposite to the main input shaft (3) via a ball bearing; the other end of the power output shaft (22) extends out of the housing (1); one end of the power output shaft (22) located in the housing (1) is provided with a second insertion hole; the output internal gear (23) is fixed in the second insertion hole; one end of the output transmission shaft (20) is inserted into the second insertion hole and meshes with the output internal gear (23) via the output transmission gear (21); the other end of the output transmission shaft (20) meshes with the second planetary gear (16) via the output transmission gear (21).

7. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 5, characterized in that: The differential speed adjustment component comprises a speed adjustment input shaft (24), a speed adjustment transmission shaft (25), a speed adjustment input gear (26), a speed adjustment transmission gear (27), and a speed adjustment output gear (28). The speed adjustment input shaft (24) and the speed adjustment transmission shaft (25) are both arranged in a base (2) through roller bearings. Both ends of the speed adjustment input shaft (24) are speed adjustment input ends and extend out of the base (2). The speed adjustment input gear (26) is arranged on the speed adjustment input shaft (24) in the base (2). The speed adjustment transmission gear (27) is arranged on the speed adjustment transmission shaft (25) and meshes with the speed adjustment input gear (26). The speed adjustment output gear (28) is arranged on the speed adjustment transmission shaft (25). The speed adjustment output gear (28) is the speed adjustment output end and meshes with the inner and outer gear rings (17).

8. The multifunctional adjustable differential device for wheel-rail adhesion testing equipment according to claim 2, characterized in that: A mounting plate (29) sleeved on the periphery of the main input shaft (3) is fixed to the outer wall of the housing (1), and the mounting plate (29) is connected to an external drive device via external bolts.

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