Bevel gear transmission axle gear box

Abstract

The utility model discloses a bevel gear transmission axle gear box which comprises a box body, an input shaft, an output shaft and a gap bridge shaft assembly, an input shaft installation hole is formed in one side of the box body, the input shaft is rotationally connected in the input shaft installation hole, a driving gear is arranged at the end, located in the box body, of the input shaft, and the gear is of a Gleason tooth type. Output shaft mounting holes are formed in the two sides, adjacent to the input shaft hole, of the box body, the output shaft is rotationally connected into the output shaft mounting holes, a driven gear meshed with the driving gear is arranged at the end, located in the box body, of the output shaft, the gap bridge shaft assembly comprises a connecting piece and a transmission shaft, the connecting piece is connected to the side of the box body, and the transmission shaft is connected to the connecting piece. And the other gear box of the bogie is connected. According to the axle gear box, the gap bridge shaft assembly is arranged on the side portion of the box body, the size and the size of the axle gear box in the height direction can be reduced, the axle gear box can pass through the lower limit more easily, and the high integration degree is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a bevel gear transmission axle gear box. Background Art

[0002] The high-speed travel drive axle gearbox currently used in large-scale road maintenance machinery is costly and inconvenient to maintain.

[0003] In addition, since the axle gearbox structures and transmission ratios used in various models are similar, but the structural interface sizes are different, the universality is poor, and the space occupied is large, which increases the production cost.

[0004] Therefore, how to provide an axle gearbox with high integration and high commonality is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] The utility model aims to provide a bevel gear transmission axle gear box, which can effectively improve its integration.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bevel gear transmission axle gearbox, comprising:

[0008] A housing, an input shaft and an output shaft, wherein one side of the housing is provided with an input shaft mounting hole, the input shaft is rotatably connected in the input shaft mounting hole, one end of the input shaft located in the housing is provided with a driving gear, two sides of the housing adjacent to the input shaft hole are provided with output shaft mounting holes, the output shaft is rotatably connected in the output shaft mounting holes, and one end of the output shaft located in the housing is provided with a driven gear meshing with the driving gear;

[0009] The bridge shaft assembly comprises a connecting member and a transmission shaft, wherein the connecting member is connected to the side of the box body, the transmission shaft is rotatably connected to the connecting member and is used to connect to another gear box of the bogie.

[0010] Preferably, an eccentric sleeve is sleeved on the output shaft, a plunger pump is provided on the side wall of the box body, one end of the plunger pump located in the box body contacts the outer wall of the eccentric sleeve, and the output shaft is used to drive the eccentric sleeve to rotate, so as to drive the plunger pump to pump oil.

[0011] Preferably, the box body comprises an upper box body and a lower box body, and the structures of the upper box body and the lower box body are mirror images.

[0012] Preferably, the upper box body is provided with an upper box body oil filling hole and an upper box body oil drain hole, and the lower box body is provided with a lower box body oil filling hole and a lower box body oil drain hole.

[0013] Preferably, a bearing seat is provided in the input shaft mounting hole, and the input shaft is mounted in the bearing seat via a first cylindrical roller bearing and a first four-point contact ball bearing.

[0014] Preferably, the input shaft is also installed in the housing through a second cylindrical roller bearing, the first cylindrical roller bearing and the second cylindrical roller bearing are arranged at intervals, the first four-point contact ball bearing is located on the side of the first cylindrical roller bearing away from the second cylindrical roller bearing, the upper housing oil filling hole and the lower housing oil filling hole are respectively located above and below between the first cylindrical roller bearing and the second cylindrical roller bearing, and the upper housing oil drain hole and the lower housing oil drain hole are respectively located above and below the driven gear.

[0015] Preferably, the output shaft is mounted in the output shaft mounting hole via a tapered roller bearing.

[0016] Preferably, a liquid level meter is installed at the bottom of the lower box.

[0017] Preferably, the connecting member includes a connecting plate and two mounting seats, the connecting plate is connected to the box body, the two mounting seats are installed on the connecting plate, a protective sleeve is provided between the two mounting seats, and the two ends of the transmission shaft are rotatably connected to the mounting seats and passed through the protective sleeves.

[0018] Preferably, one end of the transmission shaft is mounted in one of the mounting seats via a third cylindrical roller bearing, and the other end of the transmission shaft is mounted in the other mounting seat via a second four-point contact ball bearing and a third four-point contact ball bearing.

[0019] Compared with the prior art, the above technical solution has the following advantages:

[0020] The utility model provides a bevel gear transmission axle gearbox, comprising: a box body, an input shaft, an output shaft and a bridge shaft assembly, an input shaft mounting hole is provided on one side of the box body, the input shaft is rotatably connected in the input shaft mounting hole, a driving gear is provided on one end of the input shaft located in the box body, output shaft mounting holes are provided on both sides of the box body adjacent to the input shaft hole, the output shaft is rotatably connected in the output shaft mounting hole, a driven gear meshing with the driving gear is provided on one end of the output shaft located in the box body, and the bridge shaft assembly comprises a connecting piece and a transmission shaft, the connecting piece is connected to the side of the box body, the transmission shaft is rotatably connected to the connecting piece, and is used to connect another gearbox of the bogie. By arranging the bridge shaft assembly on the side of the box body, the size and volume of the axle gearbox in the height direction can be reduced, it is easier to pass through the lower limit, and it has a high degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a bevel gear transmission axle gearbox provided in a specific embodiment of the utility model;

[0023] Figure 2 A cross-sectional structural schematic diagram of a bevel gear transmission axle gearbox provided in a specific embodiment of the utility model;

[0024] Figure 3 A schematic diagram of a top view of a bevel gear transmission axle gearbox provided by a specific embodiment of the utility model after removing the upper box body and cutting the bridge shaft assembly;

[0025] Figure 4 A schematic diagram of a bridge shaft assembly provided in a specific implementation manner of the utility model.

[0026] The reference numerals are as follows:

[0027] 1 is an upper housing, 2 is a lower housing, 3 is a liquid level gauge, 4 is an axle end cover, 5 is an input shaft flange, 6 is an input shaft end cover, 7 is a bearing seat, 8 is a bridge shaft assembly, 9 is a plunger pump, 10 is an oil drain hole of the lower housing, 11 is a driven gear, 12 is an input shaft, 13 is an oil filling hole of the lower housing, 14 is a first cylindrical roller bearing, 15 is a first four-point contact ball bearing, 16 is an oil filling hole of the upper housing, 17 is a second cylindrical roller bearing, 18 is an oil drain hole of the upper housing, 19 is an eccentric sleeve, 20 is a first tapered roller bearing, and 21 is a second tapered roller bearing;

[0028] 8-1 is the bridge shaft flange, 8-2 is the third cylindrical roller bearing, 8-3 is the end cover, 8-4 is the transmission shaft, 8-5 is the protective sleeve, 8-6 is the second four-point contact ball bearing, 8-7 is the third four-point contact ball bearing, 8-8 is the mounting seat, 8-9 is the connecting plate, 8-10 is the dust cover, 8-11 is the skeleton sealing ring, 8-12 is the screw, 8-13 is the ventilation plug, and 8-14 is the screw plug. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Please refer to Figure 1 A bevel gear transmission axle gearbox provided by an embodiment of the utility model includes: a box body, an input shaft 12, an output shaft and a bridge shaft assembly 8. An input shaft 12 mounting hole is provided on one side of the box body, and the input shaft 12 is rotatably connected in the input shaft 12 mounting hole. A driving gear is provided on one end of the input shaft 12 located in the box body, and output shaft mounting holes are provided on both sides of the box body adjacent to the input shaft 12 hole. The output shaft is rotatably connected in the output shaft mounting holes. A driven gear 11 meshing with the driving gear is provided on one end of the output shaft located in the box body. The input shaft 12 can be optionally a gear shaft, and the driving gear and the driven gear 11 can adopt a Gleason tooth type. The axial angle between the driving gear and the driven gear 11 is 90°. The bridge shaft assembly 8 includes a connecting piece and a transmission shaft 8-4. The connecting piece is connected to the side of the box body, and the transmission shaft 8-4 is rotatably connected to the connecting piece and is used to connect another gearbox of the bogie. By arranging the bridge shaft assembly 8 on the side of the box body, the size and volume of the axle gearbox in the height direction can be reduced, making it easier to pass through the lower limit and having a higher degree of integration.

[0031] In some embodiments, an eccentric sleeve 19 is sleeved on the output shaft, and a plunger pump 9 is provided on the side wall of the housing. One end of the plunger pump 9 located in the housing contacts the outer wall of the eccentric sleeve 19. In order to ensure the working stability of the plunger pump 9, a spring can be used to press the plunger pump 9 against the eccentric sleeve 19. When the output shaft rotates, the eccentric sleeve 19 can be driven to rotate, thereby driving the plunger pump 9 to move relative to the housing, thereby driving the plunger pump 9 to pump oil. The pump outlet of the plunger pump 9 is connected to the lubrication system, which can actively lubricate the axle gearbox and has good heat dissipation performance.

[0032] In some embodiments, the box body includes an upper box body 1 and a lower box body 2. The structures of the upper box body 1 and the lower box body 2 are mirror images, so the upper box body of the first-position axle gearbox and the lower box body of the second-position axle gearbox can be cast using the same casting mold, so the manufacturing cost is low. The upper box body 1 can be fastened to the lower box body 2 by bolts. After the upper box body 1 and the lower box body 2 are combined, an axle installation interface is left on the side, and the installation interface is a standard interface to be compatible with a variety of vehicle models.

[0033] In some embodiments, Figure 2As shown, the upper housing 1 is provided with an upper housing oil filling hole 16 and an upper housing oil drain hole 18, and the lower housing 2 is provided with a lower housing oil filling hole 13 and a lower housing oil drain hole 10. A bearing seat 7 is provided in the mounting hole of the input shaft 12, and the input shaft 12 is mounted in the bearing seat 7 through a first cylindrical roller bearing 14 and a first four-point contact ball bearing 15. The input shaft 12 is also mounted in the housing through a second cylindrical roller bearing 17, the inner ring of the second cylindrical roller bearing 17 matches the input shaft 12, and the outer ring is mounted in the housing, the axial freedom of the second cylindrical roller bearing 17 is limited by a boss and a retaining ring on the housing, the first cylindrical roller bearing 14 and the second cylindrical roller bearing 17 are arranged at intervals, the first four-point contact ball bearing 15 is located on the side of the first cylindrical roller bearing 14 away from the second cylindrical roller bearing 17, the two cylindrical roller bearings bear the radial force of the input shaft 12, and the four-point contact ball bearing is used to bear the axial force of the input shaft 12. The upper housing oil filling hole 16 and the lower housing oil filling hole 13 are respectively located above and below the first cylindrical roller bearing 14 and the second cylindrical roller bearing 17, and the upper housing oil drain hole 18 and the lower housing oil drain hole 10 are respectively located above and below the driven gear 11. Each bearing uses active lubrication, which has a good lubrication effect, and the gears use splash lubrication. The upper housing oil drain hole 18 is used to install a respirator and can be used to add lubricating oil to the gearbox. The upper housing oil filling hole 16 is connected to the lubrication system to actively lubricate the first cylindrical roller bearing 14 and the second cylindrical roller bearing 17. The lower housing oil drain hole 10 is installed with a magnetic screw plug to absorb precipitated impurities. After opening the magnetic screw plug, it can be used to drain oil from the housing. The lower housing oil filling hole 13 is installed with a screw plug, which can also be used to drain oil from the housing. Both the upper box 1 and the lower box 2 have a plunger pump mounting seat. The plunger pump mounting seat of the upper box 1 is sealed with a cover plate, and the lubrication system diverter block is installed on the cover plate. The plunger pump 9 is installed on the plunger pump mounting seat of the lower box 2. When the boxes are assembled, sealant is applied to the assembled surface for sealing. The screw plugs of the oil drain holes of the upper box 1 and the lower box 2 are sealed with copper pads and sealant. A liquid level gauge 3 is installed at the bottom of the lower box 2, and a vent screw plug is installed at the top of the liquid level gauge 3. The upper box 1 and the lower box 2 take into account the influence of internal and external excitation sources of the system such as rotation frequency, gear meshing frequency and rail excitation frequency during the structural design stage, and the natural frequency is kept away from the excitation frequency range.

[0034] In some embodiments, Figure 1 and Figure 3 As shown, the output shaft is installed in the output shaft mounting hole through a tapered roller bearing. Specifically, a tapered roller bearing is respectively assembled at both ends of the output shaft, which are respectively denoted as the first tapered roller bearing 20 and the second tapered roller bearing 21. The axle end cover 4 is installed on both sides of the box body by bolts to limit the axial freedom of the two tapered roller bearings. The axle end cover 4 is provided with a grease nipple and a grease groove, and a single-sided double-skeleton oil seal is adopted. The sealing ring here is made of high-temperature resistant fluororubber, and has high sealing performance.

[0035] In some embodiments, Figure 1 As shown, one end of the input shaft 12 outside the housing is connected to the input shaft flange 5 through a spline. The front part of the rectangular spline of the input shaft is provided with a thread for installing an adjustment gasket and a slotted nut. The slotted nut and the gasket are pressed on the outer end face of the rectangular spline of the input shaft 12 to limit the axial freedom of the input shaft flange 5. The side clearance value of the gear pair can be adjusted by using adjustment gaskets of different thicknesses and quantities. The input shaft end cover 6 is connected to the bearing seat 7 through bolts, and a grease nipple and an oil filling port are provided on the upper part. To prevent interference with the bolts, the grease nipple and the oil filling port are offset at different angles. An oil groove is provided at the bottom of the grease nipple installation position of the input shaft end cover 6, and a single-side single-frame oil seal is used for sealing. The oil filling port is used to connect the active lubrication system to actively lubricate the bearing installed in the bearing seat 7. The bearing seat 7 is installed at the front of the housing through bolts. Its outer wall is slotted for installing an O-ring, and the inner wall has two-stage end faces for installing bearings, and an oil groove and an oil drain port are provided. Since the bearing seat 7 is provided with an oil storage structure and a hole at the bottom, it is convenient to drain the oil in the box body when changing the oil. During operation, the lubricating oil flows in from the oil filling port of the input shaft end cover 6, lubricates the first cylindrical roller bearing 14 and the first four-point contact ball bearing 15 through the oil groove on the inner wall of the bearing seat 7, and finally flows back to the bottom of the box body through the oil groove on the inner wall.

[0036] In some embodiments, Figure 3 As shown, the bridge shaft assembly 8 is only installed on the gearbox close to the power source side, and is used to transmit power to another gearbox on the same bogie. The connecting part includes a connecting plate 8-9 and two mounting seats 8-8. The connecting plate 8-9 is connected to the box body. The connecting plate 8-9 can be fastened to the box body by bolts. The two mounting seats 8-8 are installed on the connecting plate 8-9. A protective sleeve 8-5 is provided between the two mounting seats 8-8. The two ends of the transmission shaft 8-4 are rotatably connected in the mounting seats 8-8 and are inserted into the protective sleeve 8-5. The transmission shaft 8-4 can be protected by the protective sleeve 8-5. One end of the transmission shaft 8-4 is installed in one of the mounting seats 8-8 through the third cylindrical roller bearing 8-2, and the other end of the transmission shaft 8-4 is installed in the other mounting seat 8-8 through the second four-point contact ball bearing 8-6 and the third four-point contact ball bearing 8-7. As shown Figure 4As shown, a dust cover 8-10 is arranged outside the mounting seat 8-8, and a groove is opened inside for installing a skeleton seal ring 8-11. The bridge shaft assembly 8 also includes a bridge shaft flange 8-1 and an end cover 8-3. The bridge shaft flange 8-1 and the transmission shaft 8-4 both use toothed splines. The structure and function of the end cover 8-3 are similar to the axle end cover 4. The mounting seat 8-8 with a four-point contact ball bearing is provided with a breathing port and an oil drain port. The screw 8-12 and the vent plug 8-13 are installed at the breathing port, and the plug 8-14 is installed at the oil drain port. The axial load is absorbed by the four-point contact ball bearing. Compared with the tapered roller bearing, the installation process is simpler and can withstand a larger axial load.

[0037] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0038] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0039] The above is a detailed introduction to a bevel gear transmission axle gearbox provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A bevel gear transmission axle gearbox, characterized in that: include: A housing, an input shaft and an output shaft, wherein one side of the housing is provided with an input shaft mounting hole, the input shaft is rotatably connected in the input shaft mounting hole, one end of the input shaft located in the housing is provided with a driving gear, two sides of the housing adjacent to the input shaft hole are provided with output shaft mounting holes, the output shaft is rotatably connected in the output shaft mounting holes, and one end of the output shaft located in the housing is provided with a driven gear meshing with the driving gear; The bridge shaft assembly comprises a connecting member and a transmission shaft, wherein the connecting member is connected to the side of the box body, the transmission shaft is rotatably connected to the connecting member and is used to connect to another gear box of the bogie.

2. The bevel gear transmission axle gearbox according to claim 1, characterized in that: An eccentric sleeve is sleeved on the output shaft, a plunger pump is provided on the side wall of the box body, one end of the plunger pump is located in the box body and contacts the outer side wall of the eccentric sleeve, and the output shaft is used to drive the eccentric sleeve to rotate, so as to drive the plunger pump to pump oil.

3. The bevel gear transmission axle gearbox according to claim 2, characterized in that: The box body comprises an upper box body and a lower box body, and the structures of the upper box body and the lower box body are mirror images.

4. The axle gearbox according to claim 3, characterized in that: The upper box body is provided with an upper box body oil filling hole and an upper box body oil drain hole, and the lower box body is provided with a lower box body oil filling hole and a lower box body oil drain hole.

5. The bevel gear transmission axle gearbox according to claim 4, characterized in that: A bearing seat is arranged in the input shaft mounting hole, and the input shaft is mounted in the bearing seat via a first cylindrical roller bearing and a first four-point contact ball bearing.

6. The bevel gear transmission axle gearbox according to claim 5, characterized in that: The input shaft is also installed in the housing through a second cylindrical roller bearing, the first cylindrical roller bearing and the second cylindrical roller bearing are arranged at intervals, the first four-point contact ball bearing is located on the side of the first cylindrical roller bearing away from the second cylindrical roller bearing, the upper housing oil filling hole and the lower housing oil filling hole are respectively located above and below between the first cylindrical roller bearing and the second cylindrical roller bearing, and the upper housing oil drain hole and the lower housing oil drain hole are respectively located above and below the driven gear.

7. The bevel gear transmission axle gearbox according to claim 6, characterized in that: The output shaft is installed in the output shaft installation hole through a tapered roller bearing.

8. The bevel gear transmission axle gearbox according to claim 3, characterized in that: A liquid level meter is installed at the bottom of the lower box.

9. The bevel gear transmission axle gearbox according to any one of claims 1 to 8, characterized in that: The connecting member includes a connecting plate and two mounting seats, the connecting plate is connected to the box body, the two mounting seats are mounted on the connecting plate, a protective sleeve is provided between the two mounting seats, and both ends of the transmission shaft are rotatably connected in the mounting seats and inserted into the protective sleeve.

10. The bevel gear transmission axle gearbox according to claim 9, characterized in that: One end of the transmission shaft is mounted in one of the mounting seats via a third cylindrical roller bearing, and the other end of the transmission shaft is mounted in the other mounting seat via a second four-point contact ball bearing and a third four-point contact ball bearing.

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