CN109109897B - Mechanism for driving wheel to deflect and axle device with deflectable wheel - Google Patents
Mechanism for driving wheel to deflect and axle device with deflectable wheel Download PDFInfo
- Publication number
- CN109109897B CN109109897B CN201811024661.2A CN201811024661A CN109109897B CN 109109897 B CN109109897 B CN 109109897B CN 201811024661 A CN201811024661 A CN 201811024661A CN 109109897 B CN109109897 B CN 109109897B
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- Prior art keywords
- axle
- wheel
- shaft
- deflection
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B37/00—Wheel-axle combinations, e.g. wheel sets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B37/00—Wheel-axle combinations, e.g. wheel sets
- B60B37/10—Wheel-axle combinations, e.g. wheel sets the wheels being individually rotatable around the axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
Abstract
The invention discloses an axle bridge device with a deflectable wheel, which comprises an axle bridge, a wheel arranged on the axle bridge and a mechanism for driving the wheel to deflect, wherein the mechanism comprises a first deflection shaft and a second deflection shaft fixedly connected with the axle bridge, the first deflection shaft sequentially comprises a first installation part for installing the wheel and a second installation part for installing the second deflection shaft along the axial direction, the first deflection shaft is provided with a central hole matched with the axle bridge along the axial direction, and the second installation part is provided with a first through hole matched with the second deflection shaft along the radial direction. One end of the shaft bridge extends into the central hole, and the second deflection shaft penetrates through the first through hole and is fixed with one end, extending into the central hole, of the shaft bridge; the wheel is fixed on the first mounting portion. When a vehicle passes through a curve, the device drives the wheels to deflect through the deflection mechanism, so that the wheel rim abrasion loss and wheel rail noise can be reduced.
Description
Technical Field
The invention belongs to the technical field of tramcars, and particularly relates to a mechanism for driving wheels to deflect and a wheel-deflectable axle device.
Background
However, as shown in fig. 1, when the low-floor tramcar passes through a horizontal curved track 1-1, wheel rims on an axle device 1-4 are contacted with the track to guide the vehicle to run along the track, a vehicle body turning angle theta is formed between a vehicle body longitudinal central line 1-2 and a bogie longitudinal central line 1-3, but the wheels of the traditional low-floor axle device 1-4 can only roll around the axle journal center, an impact angle α exists between the wheel rims and an outer track, and when the vehicle runs on a line with more curves, the problems of large wheel track noise, large wheel rim abrasion and the like exist, and the service life of the wheels is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a wheel deflectable axle device capable of reducing the wheel rim abrasion loss and the wheel rail noise.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a mechanism for driving wheel deflects, the wheel is installed on the axle, a mechanism for driving wheel deflects includes first deflection axle and is used for the second deflection axle that links firmly with the axle, first deflection axle is along the axial in proper order including the first installation department that is used for installing the wheel to and be used for installing the second installation department that deflects the axle, first deflection axle seted up along the axial direction with axle complex centre bore, the second installation department seted up along radial direction with second deflection axle complex first through-hole.
As a further improvement of the above technical solution:
and the second deflection shaft is provided with a connecting part for fixedly connecting with the shaft bridge.
And a second through hole matched with the shaft bridge is formed in the second deflection shaft along the radial direction, and a key groove fixedly connected with the shaft bridge through a key is formed in the hole wall of the second through hole.
As a general inventive concept, the present invention further provides an axle bridge device with a deflectable wheel, comprising an axle bridge and a wheel mounted on the axle bridge, and further comprising the above-mentioned mechanism for driving the wheel to deflect, wherein one end of the axle bridge extends into the central hole, and the second deflectable shaft passes through the first through hole and is fixed with one end of the axle bridge extending into the central hole; the wheel is fixed on the first mounting portion.
By the structure, through the matching of the first deflection shaft and the second deflection shaft on the axle bridge, when a vehicle passes through a curve, a corner appears between the vehicle body and the steering frame, and after a moment is given to the first deflection shaft according to the corner, the first deflection shaft can drive wheels on the first deflection shaft to deflect around the second deflection shaft within a certain angle range, so that the attack angle between the wheel rim and the outer rail of the rail when the axle bridge device passes through the curve is reduced, and further, the wheel rim abrasion loss and the wheel rail noise are reduced.
As a further improvement of the above technical solution:
the first deflection shaft can drive the wheel to deflect around the central line of the second deflection shaft under the action of external force.
The first deflection shaft is provided with a pushing part which is used for pushing the first deflection shaft under the action of external force so as to drive the wheel to deflect around the central line of the second deflection shaft.
To obtain a precise deflection angle, the pushing part is preferably a deflection angle input lever.
After the deflection torque is measured and calculated according to the rotation angle between the bogie and the vehicle body when the vehicle passes through the curve, the deflection torque is input to the deflection angle input rod, so that the first deflection shaft is driven to drive the wheels on the first deflection shaft to deflect around the second deflection shaft.
One end of the shaft bridge extending into the central hole penetrates through the second through hole and is in key connection with the second deflection shaft.
And a third through hole matched with the second deflection shaft is formed in the end part of the shaft bridge along the radial direction, and the second deflection shaft sequentially penetrates through the first through hole and the third through hole and is in key connection with the shaft bridge.
Deflection bearings are arranged at two ends of the second deflection shaft in a penetrating mode, inner rings of the deflection bearings are fixedly connected with the outer wall surface of the second deflection shaft, and outer rings of the deflection bearings are fixedly connected with the wall surface of the first through hole.
The lower end of the second deflection shaft is further provided with a thrust bearing in a penetrating mode, the inner ring of the thrust bearing is fixed to the outer wall surface of the shaft bridge, and the outer ring of the deflection bearing is fixedly connected with the hole wall surface of the first through hole through the outer ring of the thrust bearing.
Through the cooperation of the deflection bearing and the thrust bearing, the transmission of deflection torque can be realized, and the accurate and reliable deflection of the wheel is ensured.
Compared with the prior art, the invention has the advantages that:
according to the invention, the deflection shafts in the axial direction and the radial direction are arranged on the axle bridge, and the deflection bearings and the thrust roller bearings are matched, so that when a vehicle passes through a curve, a corner appears between the vehicle body and the steering frame, and after a moment is given to the deflection angle input rod according to the corner, the wheel can deflect around the deflection shaft within a certain angle range, thereby reducing the attack angle between the wheel rim and the outer rail of the rail when the axle bridge device passes through the curve, and further reducing the wheel rim abrasion loss and the wheel rail noise. The bearing is arranged between the wheel center and the clamp mounting seat, so that the clamp deflects correspondingly when the wheel deflects; the joint bearing is arranged at one end of the clamp mounting seat and one end of the deflection shaft, so that the reaction force of the clamp during braking is transmitted to the axle bridge.
Drawings
Fig. 1 is a schematic view of a low floor vehicle passing through a curve.
Fig. 2 is a schematic structural view of the axle device for wheel deflection of the present invention.
Fig. 3 is a perspective view of the first deflection axis.
Fig. 4 is a schematic perspective sectional view of the first deflection shaft.
Illustration of the drawings: 1. a shaft bridge; 101. a third through hole; 2. a first yaw axis; 21. a first mounting portion; 22. a second mounting portion; 23. a third mounting portion; 24. a central bore; 25. a first through hole; 3. a wheel bearing; 4. a wheel; 5. a second yaw axis; 51. a boss portion; 6. a key; 7. a yaw bearing; 8. a thrust bearing; 9. a knuckle bearing; 10. a brake disc; 11. braking the clamp; 12. a clamp mounting seat; 121. a first accommodation hole; 122. a second accommodation hole; 123. a third accommodation hole; 13. a clamp mount bearing; 14. a deflection angle input lever.
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 (b):
as shown in fig. 2, the axle device with a deflectable wheel of the present embodiment includes an axle 1, and a wheel 4, a first deflection shaft 2, a second deflection shaft 5, a brake disk 10, a brake caliper 11, and a caliper mount 12 mounted on the axle 1.
As shown in fig. 3 and 4, the first yaw axis 2 includes a first mounting portion 21, a second mounting portion 22, and a third mounting portion 23 in this order in the axial direction, and the wheel 4 is mounted on the first mounting portion 21 via the wheel bearing 3, and the wheel 4 is rotatable about the center line of the wheel bearing 3. The first deflection shaft 2 is provided with a central hole 24 matched with the axle bridge 1 along the axial direction, and the second mounting part 22 is provided with a first through hole 25 matched with the second deflection shaft 5 along the radial direction. The axle journal position of axle bridge 1 tip sets up and radially has seted up third through-hole 101 of taking the keyway, and the one end of axle bridge 1 stretches into in centre bore 24, and second deflection axle 5 passes first through-hole 25 and third through-hole 101 in proper order to be connected with axle bridge 1 through flat key 6.
In other embodiments, second pivot axis 5 may be provided with a second through hole with a key slot in the radial direction, which is adapted to shaft bridge 1, and through which the end of shaft bridge 1 extending into central bore 23 passes and is keyed to second pivot axis 5.
In a further embodiment, the end of the axle bridge 1 projecting into the central bore 23 can also be fastened to the second yaw axis 5 by means of a fastener.
The two ends of the second deflection shaft 5 are respectively provided with a deflection bearing 7 in a penetrating way, the two bearings 7 are respectively arranged at the upper end and the lower end of the shaft neck of the shaft bridge 1, the inner ring of the deflection bearing 7 is fixedly connected with the outer wall surface of the second deflection shaft 5, and the outer ring of the deflection bearing 7 is fixedly connected with the hole wall surface of the first through hole 24. The yaw bearing 7 is a tapered roller bearing.
The lower end of the second deflection shaft 5 is also provided with a thrust bearing 8 in a penetrating way, the inner ring of the thrust bearing 8 is fixed with the shaft diameter side wall surface of the shaft bridge 1, and the outer ring of the deflection bearing 7 is fixedly connected with the hole wall surface of the first through hole 24 through the outer ring of the thrust bearing 8.
The clamp mounting seat 12 is a cylindrical structure with a stepped central through hole along the axial direction, and the stepped central through hole includes a first receiving hole 121 matched with the second mounting portion 22 and a second receiving hole 122 matched with the third mounting portion 23. The clamp mounting seat 12 is sleeved on the end of the first deflection shaft 2, and the second mounting portion 22, the second deflection shaft 5 mounted on the second mounting portion 22, the deflection bearing 7 and the thrust bearing 8 are all located in the first accommodating hole 121. The third mounting portion 23 is located in the second receiving hole 122, and the caliper mounting bearing 13 is mounted between the caliper mounting 12 and the third mounting portion 23, wherein an inner ring of the caliper mounting bearing 13 is fixed to an outer wall surface of the third mounting portion 23, and an outer ring of the caliper mounting bearing 13 is fixed to a hole wall of the second receiving hole 122. The clamp mount bearing 13 is also a tapered roller bearing.
The brake disc 10 is sleeved on the clamp installation seat 12, and the brake clamp 11 is fixed on the outer end face of the clamp installation seat 12 through a fastener. The inner end face of the brake disc 10 is secured to the outer end face of the wheel by fasteners.
The upper end of the second deflecting shaft 5 is further provided with a convex portion 51, the convex portion 51 is provided with a joint bearing 9, and a hole wall of the first accommodating hole 121 is correspondingly provided with a third accommodating hole 123 for accommodating the joint bearing 9. The knuckle bearing 9 can transmit the reaction force of the brake caliper 11 to the axle bridge 1 during braking.
The lower end of the first mounting portion 21 of the first yaw axis 2 is provided with a yaw angle input rod 14, referring to fig. 1, when a vehicle passes through a curve, a rotational angle theta occurs between a vehicle body and a bogie, and after a moment is given to the yaw angle input rod 14 according to the rotational angle theta, referring to fig. 2, the first yaw axis 2 and the wheels 4 can be deflected within a certain angle range around the central axis of the second yaw axis 5 by virtue of the cooperation of the yaw bearing 7 and the thrust roller bearing 8 on the second yaw axis 5 and the first yaw axis 2. Other components mounted on the first yaw axis 2 and the wheel 4 may also be yaw-able together with the wheel 4. By means of the caliper mount bearing 13 arranged between the first pivot axis 2 and the caliper mount 12, the brake caliper 11 can be pivoted at the same time as the wheel is pivoted.
When the vehicle runs in a straight line, the deflection angle input rod 14 has no additional moment input, and the wheels keep the middle position and do not deflect.
Therefore, the invention can realize the purpose of reducing the angle of attack between the wheel rim and the outer rail of the track when the axle and bridge device passes through the curve by means of the deflection of the wheels when the vehicle passes through the curve, thereby reducing the abrasion loss of the wheel rim and the noise of the wheel track. Meanwhile, the brake disc 10, the brake clamp 22 and other parts can deflect along with the wheel 4, and the braking performance of the vehicle is not influenced.
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 (8)
1. The axle bridge device with the deflectable wheels comprises an axle bridge (1) and wheels (4) mounted on the axle bridge (1), and is characterized by further comprising a mechanism for driving the wheels to deflect, wherein the mechanism for driving the wheels to deflect comprises a first deflection shaft (2) and a second deflection shaft (5) fixedly connected with the axle bridge (1), the first deflection shaft (2) sequentially comprises a first mounting part (21) for mounting the wheels (4) and a second mounting part (22) for mounting the second deflection shaft (5) along the axial direction, the first deflection shaft (2) is provided with a central hole (23) matched with the axle bridge (1) along the axial direction, and the second mounting part (22) is provided with a first through hole (24) matched with the second deflection shaft (5) along the radial direction; one end of the shaft bridge (1) extends into the central hole (23), and the second deflection shaft (5) penetrates through the first through hole (24) and is fixed with one end, extending into the central hole (23), of the shaft bridge (1); the wheel (4) is fixed to the first mounting portion (21).
2. The wheel-deflectable axle bridge arrangement according to claim 1, characterized in that the first deflection axle (2) can be used to force the wheel (4) to deflect about the center line of the second deflection axle (5) under the action of an external force.
3. The wheel-deflecting axle bridge arrangement according to claim 2, characterized in that the first deflecting axle (2) is provided with a pushing portion for pushing the first deflecting axle (2) under the action of an external force and thereby deflecting the wheel (4) about the center line of the second deflecting axle (5).
4. The axle arrangement according to any one of claims 1 to 3, characterised in that the second yaw axis (5) is provided with a connection for fastening to the axle (1).
5. The axle device with the deflectable wheel as claimed in any one of claims 1 to 3, wherein the second deflectable shaft (5) is provided with a second through hole matched with the axle (1) in the radial direction, a key groove for being fixedly connected with the axle (1) through a key is formed on the wall of the second through hole, and one end of the axle (1) extending into the central hole (23) penetrates through the second through hole and is connected with the second deflectable shaft (5) through a key.
6. The axle device with the deflectable wheel as claimed in any one of claims 1 to 3, wherein a third through hole (11) matched with the second deflection shaft (5) is formed at the end of the axle (1) in the radial direction, and the second deflection shaft (5) sequentially passes through the first through hole (24) and the third through hole (11) and is connected with the axle (1) through a key (6).
7. The axle bridge device capable of deflecting the wheel according to any one of claims 1 to 3, wherein the two ends of the second deflecting shaft (5) are respectively provided with a deflecting bearing (7), the inner ring of the deflecting bearing (7) is fixedly connected with the outer wall surface of the second deflecting shaft (5), and the outer ring of the deflecting bearing (7) is fixedly connected with the wall surface of the first through hole (24).
8. The axle device with the deflectable wheel, according to claim 7, is characterized in that the lower end of the second deflection shaft (5) is further provided with a thrust bearing (8), the inner ring of the thrust bearing (8) is fixed with the outer wall surface of the axle (1), and the outer ring of the deflection bearing (7) is fixedly connected with the hole wall surface of the first through hole (24) through the outer ring of the thrust bearing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811024661.2A CN109109897B (en) | 2018-09-04 | 2018-09-04 | Mechanism for driving wheel to deflect and axle device with deflectable wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811024661.2A CN109109897B (en) | 2018-09-04 | 2018-09-04 | Mechanism for driving wheel to deflect and axle device with deflectable wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109109897A CN109109897A (en) | 2019-01-01 |
| CN109109897B true CN109109897B (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811024661.2A Active CN109109897B (en) | 2018-09-04 | 2018-09-04 | Mechanism for driving wheel to deflect and axle device with deflectable wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109109897B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120329A (en) * | 1993-02-03 | 1996-04-10 | 阿瑟·E·毕晓普 | Self-steering railway bogie |
| CN103523036A (en) * | 2013-10-29 | 2014-01-22 | 西南交通大学 | Radial bogie for low-floor trains |
| CN203623284U (en) * | 2013-11-04 | 2014-06-04 | 西南交通大学 | Differential device coupling wheel set for city rail vehicle |
| CN104401344A (en) * | 2014-12-01 | 2015-03-11 | 南车株洲电力机车有限公司 | Track locomotive and radial bogie |
-
2018
- 2018-09-04 CN CN201811024661.2A patent/CN109109897B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120329A (en) * | 1993-02-03 | 1996-04-10 | 阿瑟·E·毕晓普 | Self-steering railway bogie |
| CN103523036A (en) * | 2013-10-29 | 2014-01-22 | 西南交通大学 | Radial bogie for low-floor trains |
| CN203623284U (en) * | 2013-11-04 | 2014-06-04 | 西南交通大学 | Differential device coupling wheel set for city rail vehicle |
| CN104401344A (en) * | 2014-12-01 | 2015-03-11 | 南车株洲电力机车有限公司 | Track locomotive and radial bogie |
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| Publication number | Publication date |
|---|---|
| CN109109897A (en) | 2019-01-01 |
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