CN211543519U - Low-floor non-power axle bridge device - Google Patents
Low-floor non-power axle bridge device Download PDFInfo
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- CN211543519U CN211543519U CN202020001306.XU CN202020001306U CN211543519U CN 211543519 U CN211543519 U CN 211543519U CN 202020001306 U CN202020001306 U CN 202020001306U CN 211543519 U CN211543519 U CN 211543519U
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Abstract
The utility model discloses a low floor non-power axle device, which comprises an axle, a transmission mechanism and two wheels; the axle bridge comprises an axle pipe and box bodies symmetrically arranged at two ends of the axle pipe, each box body comprises a gear box and a wheel axle, and each wheel axle is provided with a through hole; the upper part of the gear box is provided with a first hole, the lower part of the gear box is provided with a second hole, and the first hole and the second hole are communicated; the first hole is communicated with the through hole and is coaxially arranged, and the second hole is communicated with the bridge pipe and is coaxially arranged; the transmission mechanism comprises a differential, a first shaft connected to two ends of the differential, a pinion arranged on the first shaft, a bull gear meshed with the pinion, and a second shaft provided with the bull gear; the differential and the first shaft are arranged in the axle tube in a penetrating manner, the pinion is positioned in the second hole, the gearwheel is positioned in the first hole, and the second shaft is arranged in the axial through hole in a penetrating manner; the wheel is installed on the wheel axle, and the wheel is connected with the second shaft. The structure can solve the problem that the wheels are scratched due to the sliding drag generated when the outer wheels roll as the moving distance of the outer wheels is larger than that of the inner wheels when the outer wheels pass a curve.
Description
Technical Field
The utility model belongs to the technical field of low-floor tram bogie, especially, relate to a low-floor non-power axle bridge device.
Background
In recent years, there has been a great progress in research and use of low floor light rail vehicles, which are used to change the problems of inconvenience in getting on and off and delay in running and time caused by the conventional high floor. The low-floor light rail vehicle provides people with more comfortable riding feeling, does not need a high platform, is convenient for the disabled, the old and the children to get on and off the vehicle, and reduces the impact on urban landscape.
At present, non-power bogie axle bridge devices of low-floor light rail vehicles at home and abroad adopt independent wheel structures so as to meet the requirements of low floor of a vehicle body and flat ground. The wheels on the left side and the right side of the traditional independent wheel bogie rotate independently, so that the traditional independent wheel bogie has the defect of poor guidance performance, has no automatic centering capability when running on a straight line, and is easy to run by being attached to one side of a track; on the curve, the attack angle of the independent wheel pair is larger, and the wheel rim is easy to be attached. Therefore, on one hand, the wheel rim abrasion of the independent wheel set is increased, so that the service life of the elastic wheel is reduced, and the vehicle maintenance cost is increased; on the other hand, the risk of derailment of the independent wheels increases.
CN106585656A discloses a wheel-set axle box device for synchronizing the rotation speed of left and right wheels of a low-floor light rail bogie, which couples the wheels on the left and right sides of an independent wheel bogie through the engagement of a transmission shaft and a set of large and small gears integrated in an axle bridge, so as to realize the rotation speed synchronization of the wheels on both sides. However, this technique cannot solve the problem that the outer wheel rolls and slips to scratch the wheel because the outer wheel moves a greater distance than the inner wheel on the curve.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's is not enough, provides a low-floor non-power axle device, when can guaranteeing that the vehicle passes through bend or curve, two wheels roll simultaneously and travel to reduce the wheel and improve the life of wheel because of the scotch problem of sliding, reduce the maintenance cost.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a low-floor non-power axle device comprises an axle, a transmission mechanism and two wheels;
the axle bridge comprises an axle pipe with a first axial through hole and box bodies symmetrically arranged at two ends of the axle pipe, each box body comprises a gear box and a wheel axle connected to the gear box along the outer end of the length direction of the axle pipe, and each wheel axle is provided with a second axial through hole; the upper part of the gear box is provided with a first hole for accommodating a large gear, the lower part of the gear box is provided with a second hole for accommodating a small gear, and the first hole is communicated with the second hole; the first hole is communicated with the second axial through hole and is coaxially arranged, and the second hole is communicated with the first axial through hole and is coaxially arranged;
the transmission mechanism comprises a differential mechanism, first shafts connected to the two ends of the differential mechanism along the length direction of the axle tube, small gears arranged on the first shafts, large gears in meshing transmission with the small gears, and second shafts provided with the large gears; the differential and the first shaft are arranged in the first axial through hole in a penetrating manner, the pinion is arranged in the second hole, the gearwheel is arranged in the first hole, and the second shaft is arranged in the second axial through hole in a penetrating manner;
the wheels are mounted on corresponding wheel shafts through bearings, and the wheels are in transmission connection with corresponding second shafts.
The differential mechanism is arranged between the transmission shafts of the two sets of gear transmission mechanisms, so that the problem that the wheels are scratched due to the fact that the outer wheels move for a larger distance than the inner wheels when the outer wheels roll when a curve is crossed can be solved. By using the differential mechanism, the two wheels can be ensured to roll simultaneously when the vehicle passes through a curve or a curve, so that the problem that the wheels are scratched due to sliding is reduced, the service life of the wheels is prolonged, and the maintenance cost is reduced.
As a further improvement of the above technical solution:
a transmission gear is fixed at one end of the second shaft, which is far away from the big gear, a first gear ring is fixed on the wheel, a second gear ring is arranged between the transmission gear and the first gear ring, and the second gear ring is respectively in meshing transmission with the transmission gear and the first gear ring.
Compared with the prior art, the utility model has the advantages of:
the utility model realizes the synchronous rotation of the left wheel and the right wheel of the non-power bogie by arranging two sets of gear transmission mechanisms in the axle bridge; and through setting up differential mechanism between two transmission shafts of axle bridge lower part, can solve when crossing the curve because outside wheel will be greater than inboard wheel displacement, make outside wheel produce when rolling and slide and drag and the problem of scotch the wheel to reduce the scotch problem of wheel, improve the life of wheel, reduce maintenance cost.
Drawings
Fig. 1 is a schematic perspective view of a low-floor non-power axle bridge device according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a low-floor non-powered axle bridge device according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of an axle bridge according to an embodiment of the present invention.
Illustration of the drawings: 1. a second shaft; 2. a first gear ring; 3. a first tapered roller bearing; 4. a fastener; 5. a wheel; 6. a second tapered roller bearing; 7. a shaft bridge; 71. a second axial through hole; 72. a first hole; 73. a first axial through hole; 74. a second hole; 75. a bridge pipe; 76. a gear case; 77. a wheel shaft; 8. a third tapered roller bearing; 9. a bull gear; 10. a first shaft; 11. a fourth tapered roller bearing; 12. a differential mechanism; 13. a pinion gear; 14. a transmission gear; 15. a second gear ring.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
Example 1:
as shown in fig. 1 and 2, the low-floor non-powered axle device of the present embodiment includes an axle 7, a transmission mechanism, and two wheels 5.
As shown in fig. 3, the axle bridge 7 includes an axle tube 75 having a first axial through hole 73, and a case body symmetrically disposed at both ends of the axle tube 75, the case body including a gear case 76 and a wheel axle 77 connected to an outer end of the gear case 76 in a length direction of the axle tube 75, the wheel axle 77 having a second axial through hole 71; the upper part of the gear box 76 is provided with a first hole 72 for accommodating the large gear 9, the lower part of the gear box 76 is provided with a second hole 74 for accommodating the small gear 13, and the first hole 72 is communicated with the second hole 74; the first bore 72 is in communication with and coaxially arranged with the second axial through bore 71, and the second bore 74 is in communication with and coaxially arranged with the first axial through bore 73.
The transmission mechanism comprises a differential 12, a first shaft 10 connected to two ends of the differential 12 along the length direction of the axle tube 75, a pinion 13 arranged on the first shaft 10, a bull gear 9 in meshing transmission with the pinion 13, and a second shaft 1 provided with the bull gear 9; the differential 12 and the first shaft 10 are inserted in the first axial through hole 10, the pinion 13 is located in the second hole 74, the gearwheel 9 is located in the first hole 72, and the second shaft 1 is inserted in the second axial through hole 71.
The wheel 5 is mounted on a corresponding wheel shaft 77 through a bearing, a transmission gear 14 is fixed at one end of the second shaft 1 far away from the large gear 9, a first gear ring 2 is fixed on the wheel 5, a second gear ring 15 is arranged between the transmission gear 14 and the first gear ring 2, and the second gear ring 15 is respectively in meshing transmission with the transmission gear 14 and the first gear ring 2.
Two ends of the big gear 9 are respectively positioned by a third conical roller bearing 8 arranged at one end of the second shaft 1. The other end of the second shaft 1 is engaged with a second gear ring 15 through a transmission gear 14 of the second shaft, and the first gear ring 2 is installed on the elastic wheel 5 through a fastener 4.
One end of the first shaft 10 is positioned by a fourth tapered roller bearing 11, and the other end is connected with a differential 12. The first shaft 10 is symmetrically arranged in the first axial through hole 73.
Two sets of tapered roller bearings (a first tapered roller bearing 3 and a second tapered roller bearing 6) are arranged between the elastic wheel 5 and the axle 7 and are used for transmitting the force and the moment of the vehicle.
In conclusion, the axle bridge device adopts an upper gear transmission shaft and a lower gear transmission shaft which are parallel and arranged in a Z shape, one end of the upper gear transmission shaft adopts internal gear transmission, and the other end adopts external gear transmission; one end of the lower end gear transmission shaft is connected through a differential mechanism, and the other end of the lower end gear transmission shaft is positioned through a single-row tapered roller bearing; two sets of tapered roller bearings, one large and one small, are arranged between the elastic wheel and the axle bridge; the axle bridge is of an integrated casting structure, the axle head is of a hollow axle structure, the middle part of the axle is a hollow axle body, and the two sides of the axle are hollow box bodies which are completely communicated left and right.
Referring to fig. 1, when the elastic wheels 5 on both sides of the axle rotate, the elastic wheels are transmitted to the second axle 1 through the first gear ring 2 and the second gear ring 15, and then transmitted to the first axle 10 through the big gear 9 installed on the second axle 1, and then the synchronous rotation of the elastic wheels on both sides is realized through the differential 12, particularly when the vehicle passes through a curve or a curve, the differential 12 can solve the problem that the wheels are scratched because the outer wheels move a larger distance than the inner wheels when the vehicle passes through the curve, so that the outer wheels roll and slide at the same time. The differential 12 can ensure that two wheels roll simultaneously when the vehicle passes through a curve, thereby reducing the problem of abrasion of the wheels due to sliding, prolonging the service life of the wheels and reducing the maintenance cost.
The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.
Claims (2)
1. A low-floor non-power axle device is characterized by comprising an axle (7), a transmission mechanism and two wheels (5);
the axle bridge (7) comprises an axle pipe (75) with a first axial through hole (73), and boxes symmetrically arranged at two ends of the axle pipe (75), wherein each box comprises a gear box (76) and a wheel axle (77) connected to the outer end of the gear box (76) along the length direction of the axle pipe (75), and each wheel axle (77) is provided with a second axial through hole (71); the upper part of the gear box (76) is provided with a first hole (72) for accommodating the large gear (9), the lower part of the gear box (76) is provided with a second hole (74) for accommodating the small gear (13), and the first hole (72) is communicated with the second hole (74); the first hole (72) is in communication with and coaxially arranged with a second axial through hole (71), the second hole (74) is in communication with and coaxially arranged with a first axial through hole (73);
the transmission mechanism comprises a differential (12), first shafts (10) connected to the two ends of the differential (12) along the length direction of the axle tube (75), small gears (13) arranged on the first shafts (10), large gears (9) in meshing transmission with the small gears (13), and a second shaft (1) provided with the large gears (9); the differential (12) and the first shaft (10) are arranged in a first axial through hole (10) in a penetrating mode, the pinion (13) is arranged in a second hole (74), the gearwheel (9) is arranged in a first hole (72), and the second shaft (1) is arranged in a second axial through hole (71) in a penetrating mode;
the wheels (5) are mounted on corresponding wheel shafts (77) through bearings, and the wheels (5) are in transmission connection with corresponding second shafts (1).
2. The low-floor non-power axle device according to claim 1, characterized in that a transmission gear (14) is fixed at one end of the second axle (1) far away from the big gear (9), a first gear ring (2) is fixed on the wheel (5), a second gear ring (15) is arranged between the transmission gear (14) and the first gear ring (2), and the second gear ring (15) is respectively in mesh transmission with the transmission gear (14) and the first gear ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020001306.XU CN211543519U (en) | 2020-01-02 | 2020-01-02 | Low-floor non-power axle bridge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020001306.XU CN211543519U (en) | 2020-01-02 | 2020-01-02 | Low-floor non-power axle bridge device |
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| Publication Number | Publication Date |
|---|---|
| CN211543519U true CN211543519U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020001306.XU Active CN211543519U (en) | 2020-01-02 | 2020-01-02 | Low-floor non-power axle bridge device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954899A (en) * | 2021-11-17 | 2022-01-21 | 北京交通大学 | Axle bridge type independent wheel pair with back inclination angle |
-
2020
- 2020-01-02 CN CN202020001306.XU patent/CN211543519U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954899A (en) * | 2021-11-17 | 2022-01-21 | 北京交通大学 | Axle bridge type independent wheel pair with back inclination angle |
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