CN220163869U - Primary suspension device for bogie and railway vehicle - Google Patents
Primary suspension device for bogie and railway vehicle Download PDFInfo
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- CN220163869U CN220163869U CN202321597461.2U CN202321597461U CN220163869U CN 220163869 U CN220163869 U CN 220163869U CN 202321597461 U CN202321597461 U CN 202321597461U CN 220163869 U CN220163869 U CN 220163869U
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- axle box
- rigidity
- guide pin
- positioning seat
- seat
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- 239000000725 suspension Substances 0.000 title claims abstract description 59
- 125000006850 spacer group Chemical group 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000011810 insulating material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a primary suspension device of a bogie and a railway vehicle. The primary suspension device comprises a framework, a suspension unit and an axle box; the framework is positioned above the axle box; the axle box is provided with a bearing platform for fixing the suspension unit; the suspension unit comprises a spiral spring, a positioning structure and a rigidity adjusting part; the spiral spring is fixed between the framework and the bearing platform of the axle box; the positioning structure is positioned in the spiral spring and is provided with an inner cavity; the rigidity adjusting part is arranged in the inner cavity and is used for adjusting the transverse rigidity and the longitudinal rigidity of the axle box. The primary suspension device not only can adjust the rigidity of transverse, longitudinal and vertical directions, improve the bearing capacity of the vehicle and prolong the service life of an axle box system, but also can effectively reduce the abrasion of wheel rails, inhibit the snaking motion and the rolling motion of a bogie, and realize the running dynamics performance requirements of stable running and stable performance on the premise of improving the running critical speed of the vehicle.
Description
Technical Field
The utility model relates to a primary suspension device of a bogie and a railway vehicle.
Background
Railway vehicle bogies are rigid structures that apply vertical, lateral and longitudinal positioning to wheel sets and trusses through a series of suspension structures and axle boxes. In order to increase the critical speed of a rail vehicle, ensure stable and stable performance at high speed operation, the primary suspension must accordingly have a high transverse stiffness, a high longitudinal stiffness, and a vertical stiffness providing a suitable deflection.
At present, a primary suspension device of a railway vehicle is provided with a pull plate type, a positioning rotating arm type, a double pull rod type, a guide pillar positioning and the like. When these positioning methods are applied to high-speed rail vehicles, the following problems exist: 1. the vertical rigidity is bigger, and the structural layout problem of the side beams is relatively higher, so that larger vibration is easy to generate during high-speed operation, the self structural strength requirements on the axle box body and the bogie frame are higher, the dead weight of the bogie can be increased, and the load is reduced. Meanwhile, the lower part of the bogie has a small overhaul space, and is inconvenient for overhaul and maintenance. 2. The suspension system with the guide post positioned or positioned by adopting the dry friction pair has small vertical dynamic deformation bearing capacity and is not easy to ensure the transverse and longitudinal rigidity. Meanwhile, the problems of reduced vehicle performance, short maintenance period, higher cost and the like exist after the friction piece is worn.
Disclosure of Invention
In view of the foregoing, an object of the present utility model is to provide a suspension system for a bogie, which not only can adjust the rigidity of the transverse, longitudinal and vertical directions, improve the bearing capacity of the vehicle and prolong the service life of the axle box system, but also can effectively reduce the wear of the wheel track, inhibit the meandering and rolling motions of the bogie, and realize the running dynamics performance requirements of stable running and stable performance on the premise of improving the running critical speed of the vehicle. Another object of the present utility model is to provide a railway vehicle comprising a suspension arrangement as described above.
The utility model adopts the following technical scheme to realize the aim.
In one aspect, the present utility model provides a bogie primary suspension apparatus comprising a frame, a suspension unit, and an axle housing; the framework is positioned above the axle box; the axle box is provided with a bearing platform for fixing the suspension unit; the suspension unit comprises a spiral spring, a positioning structure and a rigidity adjusting part; the spiral spring is fixed between the framework and the bearing platform of the axle box; the positioning structure is positioned in the spiral spring and is provided with an inner cavity; the rigidity adjusting part is arranged in the inner cavity and is used for adjusting the transverse rigidity and the longitudinal rigidity of the axle box.
In the present utility model, a primary suspension device includes a frame, a suspension unit, and an axle housing. The suspension unit may be provided in plural, preferably in two, as required. The two suspension units can be symmetrically arranged on bearing platforms at two sides of the axle box. The suspension unit under the existing condition does not consider the difference of empty vehicles and loaded vehicles, so that the designs of transverse, longitudinal and vertical stiffness values are identical under two different loading working conditions, the problem that the parts of the suspension unit are easy to wear is caused, and the service life of the whole device is reduced. The inventor surprisingly found that by arranging the spiral steel spring on the suspension unit and arranging the positioning structure and the rigidity adjusting part at the same time, the positioning mode of combining the spiral steel spring and the rigidity adjusting part can be adopted, the structural characteristics of the steel spring can be utilized, the rigidity adjusting part can be utilized to adjust the transverse rigidity range and the longitudinal rigidity range, the requirement of high-speed running of the railway vehicle can be fully met, meanwhile, the small vertical rigidity is ensured to be realized when the railway vehicle is empty, the relatively large vertical rigidity is realized when the railway vehicle is heavy, and the railway vehicle with high empty load ratio difference can be further adapted to the high-speed railway vehicle.
According to the bogie primary suspension device of the present utility model, preferably, the frame includes a frame body, a first mount, and a damper mount;
the first mounting seat is arranged below the framework body and is used for mounting the suspension unit;
the damper mounting seats are symmetrically arranged on the outer side of the framework body along the vertical center line of the axle box and are positioned above the first mounting seat and used for being connected with a series of vertical dampers.
The bogie-suspended device according to the present utility model preferably further comprises a vertical shock absorber fixedly connected between the shock absorber mount and the axle housing.
According to the bogie-side suspension device of the present utility model, preferably, the rigidity adjusting part is a laminated rubber stack.
In the present utility model, the rigidity adjusting part is provided as an elastic part, which may be a laminated rubber stack, a herringbone rubber stack, a hollow spiral rubber stack, a conical rubber stack; preferably as a laminated rubber stack or a hollow spiral rubber stack; more preferably a laminated rubber stack. According to a specific embodiment of the utility model, the stiffness-adjusting member is provided as a laminated rubber stack, which is provided as a laminated rubber stack of layers of metal and rubber vulcanization integrated. The structure has a large adjustment range of transverse rigidity and longitudinal rigidity, effectively solves the problem that the rigidity of a primary suspension of a railway vehicle is matched under different load working conditions, improves the critical speed of a bogie, and can reasonably distribute the bearing weight of a suspension device, thereby reducing the stress level of a steel spring, avoiding the fatigue damage of the steel spring and prolonging the service life.
The bogie primary suspension device according to the present utility model, preferably, the positioning structure includes an upper positioning seat and a lower positioning seat;
one end of the upper positioning seat is fixedly connected with the first mounting seat, and the other end of the upper positioning seat penetrates through the rigidity adjusting part to be fixedly connected with the lower positioning seat;
the lower end of the lower positioning seat is connected with the bearing platform of the axle box.
In the utility model, a positioning structure without friction pair positioning is adopted, and the upper positioning seat and the lower positioning seat are matched, so that the positioning structure can solve the problem of clearance caused by abrasion of the friction pair.
According to the bogie primary suspension device of the present utility model, preferably, the upper positioning seat includes an upper guide pin, a guide body, and an upper supporting portion; the upper supporting part is sleeved on the upper guide pin and is positioned at the top of the spiral spring; the guide body is vertically arranged below the upper guide pin; the upper guide pin is disposed within the first mount away from a portion of the guide body.
In the present utility model, the upper positioning seat may be provided in a conical surface T-shaped structure, and the upper guide pin may be provided in a disc-shaped structure, a portion of which is remote from the guide body being provided in the first mounting seat. The upper supporting part is sleeved on the upper guide pin and is positioned at the top of the spiral spring, and the length of the cross section of the upper supporting part is the same as that of the spiral spring. The guide body is vertically arranged below the upper guide pin, the outer part of the guide body is a conical surface, a conical cavity structure is arranged in the guide body, and the non-solid structure can lighten the self bearing. The lower end of the cavity is provided with a threaded hole, the guide body penetrates through the rigidity adjusting part, and the guide body can be connected with the lower positioning seat in a bolt connection mode.
The bogie primary suspension device according to the present utility model preferably further comprises a spacer which is fitted over the upper guide pin and is located between the upper support portion and the first mount.
In the present utility model, a spacer is also provided, which may be made of a nonmetallic insulating material, so that the stress level of the coil spring can be reduced.
According to the bogie primary suspension device of the present utility model, preferably, the lower positioning seat comprises a lower positioning seat body, a lower guide pin, a lower supporting part, a clamping seat and a clamping spring;
the inner cavity is arranged in the lower positioning seat body;
the clamping seat is arranged at the upper part of the inner cavity; the clamping spring is used for fixing the rigidity adjusting part on the clamping seat; the lower guide pin is arranged below the inner cavity and is connected with the bearing platform of the axle box; the lower supporting part is sleeved on the lower guide pin and is positioned at the bottom of the spiral spring.
In the utility model, the lower positioning seat can be provided with a cylindrical cavity structure, and the rigidity adjusting part can be horizontally arranged in the cavity of the lower positioning seat.
The bogie-suspended device according to the present utility model preferably further comprises a cushion pad which is fitted over the lower guide pin and is located between the lower support portion and the pedestal of the axle box.
The utility model is also provided with a buffer cushion which can provide the longitudinal rigidity, the transverse rigidity and the vertical rigidity of the primary suspension device, weaken the low-frequency vibration of the bogie wheel set during running and ensure the stability and the stability of the bogie during high-speed running. Meanwhile, the stress level of the steel spring is reduced, and the fatigue life of the steel spring is prolonged.
In another aspect, the utility model also provides a railway vehicle, preferably comprising a bogie primary suspension as described above. When the structure of the primary suspension device of the bogie is optimized, the running stability and the bearing capacity of the railway vehicle are correspondingly improved.
The primary suspension device of the bogie adopts a positioning mode of combining a spiral steel spring and a rigidity adjusting part, not only utilizes the structural characteristics of the steel spring, but also can utilize the rigidity adjusting part to adjust the transverse rigidity range and the longitudinal rigidity range, can fully meet the requirement of high-speed running of a railway vehicle, ensures that smaller vertical rigidity is realized during empty vehicles, realizes relatively larger vertical rigidity during heavy vehicles, and further can be suitable for the high-speed railway vehicles with large empty-load ratio difference. In addition, the abrasion of wheel tracks can be effectively reduced, the snaking motion and the rolling motion of the bogie can be restrained, and the running dynamic performance requirements of stable running and stable performance can be realized on the premise of improving the running critical speed of the vehicle.
Drawings
Fig. 1 is a schematic structural view of a primary suspension device for a bogie according to the present utility model.
Fig. 2 is a schematic structural view of the suspension unit of the present utility model.
Fig. 3 is a schematic structural view of the upper positioning seat of the present utility model.
Fig. 4 is a schematic structural view of the lower positioning seat of the present utility model.
The reference numerals are explained as follows:
1-a framework, 11-a framework body, 12-a first mounting seat and 13-a damper mounting seat;
2-hanging units, 21-spiral springs, 221-upper positioning seats, 2211-upper guide pins, 2212-guide bodies, 2213-upper supporting parts, 222-lower positioning seats, 2221-lower positioning seat bodies, 2222-lower guide pins, 2223-lower supporting parts, 2224-clamping seats, 2225-clamp springs, 223-isolation gaskets, 224-buffer cushions and 23-rigidity adjusting parts;
3-axle boxes and 31-bearing platforms;
4-a series of vertical vibration dampers.
Detailed Description
The present utility model will be further described with reference to specific examples, but the scope of the present utility model is not limited thereto.
Example 1
Fig. 1 is a schematic structural view of a primary suspension device for a bogie according to the present utility model. Fig. 2 is a schematic structural view of the suspension unit of the present utility model. Fig. 3 is a schematic structural view of the upper positioning seat of the present utility model. Fig. 4 is a schematic structural view of the lower positioning seat of the present utility model.
As shown in fig. 1, the bogie-side suspension apparatus of the present utility model includes a frame 1, a suspension unit 2, an axle box 3, and a side-to-side damper 4.
The axleboxes 3 may be those known in the art. The axle box 3 is provided with a platform 31, and the platform 31 is provided with a through hole for fixing the suspension unit 2.
The frame 1 is located above the axleboxes 3. The frame 1 is provided with a frame body 11, two first mounting seats 12 and a damper mounting seat 13. The two first mounting seats 12 are respectively arranged below the frame body 11 and are used for mounting the two hanging units 2. The damper mounting seats 13 are symmetrically arranged on the outer side of the frame body 11 along the vertical center line of the axle box 3 and are positioned above the two first mounting seats 12 for connecting a series of vertical dampers 4.
The suspension unit 2 is arranged between the frame 1 and the deck 1 of the axlebox 3. In this embodiment, two suspension units 2 are provided, and the two suspension units 2 are symmetrically disposed on through holes of the bearing platforms 31 on both sides of the axle box 3.
The suspension unit 2 includes a coil spring 21, a positioning structure, and a rigidity adjusting part 23. The coil spring 21 is fixed between the frame 1 and the pedestal 31 of the axlebox 3. The positioning structure is located within a coil spring 21, which is provided with an inner cavity. A rigidity adjusting part 23 is horizontally provided in the inner chamber for adjusting the lateral and longitudinal rigidity of the axlebox 3. In this embodiment, the rigidity adjusting part is a laminated rubber stack, which is a laminated rubber stack integrally vulcanized by a plurality of layers of metal and rubber, so as to adjust the transverse rigidity value and the longitudinal rigidity value. The positioning mode that the spiral spring (steel spring) and the laminated rubber stack are combined is adopted, the characteristics of high stability, high energy storage speed, long service life and large longitudinal and transverse stiffness adjustment range of the laminated rubber stack of the steel spring are fully utilized, and the requirement of high-speed running of a railway vehicle can be fully met.
As shown in fig. 2, the positioning structure includes an upper positioning seat 221, a lower positioning seat 222, a spacer 223, and a buffer pad 224. The positioning structure without the friction pair positioning is adopted, the upper positioning seat and the lower positioning seat are matched, and the positioning structure can solve the problem of clearance caused by abrasion of the friction pair.
As shown in fig. 3, the upper positioning seat 221 is provided in a tapered T-shaped structure, which includes an upper guide pin 2211, a guide body 2212, and an upper support portion 2213. The three can be integrally formed. The upper guide pin 2211 has a disc-shaped structure, and a part of the upper guide pin is disposed in the first mounting seat 12 away from the guide body 2212, and the other part of the upper guide pin is exposed out of the first mounting seat 12. The upper support portion 2213 is sleeved on the upper guide pin 2211 and is positioned at the top of the coil spring 21, and the length of the cross section of the upper support portion 2213 is the same as the length of the cross section of the coil spring 21. The guide body 2212 is vertically arranged below the upper guide pin 2211, the outside of the guide body 2212 is a conical surface, a conical cavity structure is arranged inside the guide body, a threaded hole is formed in the lower end of the cavity, and the guide body 2212 is connected with the lower positioning seat 222 in a bolt connection mode. Specifically, the guide body 2212 passes through the rigidity adjusting part 23, and then is coupled with the lower positioning seat 222 by being engaged with a screw hole of the lower end of the inner cavity of the guide body 2212 by a bolt. The spacer 223 is sleeved on the upper guide pin 2211 and is located between the upper support portion 2213 and the first mounting seat 12. In this embodiment, the spacer 223 is made of a nonmetallic insulating material, and the first mounting base 12, the spacer 223 and the upper support portion 2213 are fixed by bolts.
As shown in fig. 4 and 2, the lower positioning seat 222 is provided in a cylindrical cavity structure, which includes a lower positioning seat body 2221, a lower guide pin 2222, a lower support portion 2223, a card seat 2224, and a clamp spring 2225. An inner cavity is arranged in the lower positioning seat body 2221; the card holder 2224 is provided at the upper portion of the inner cavity, and the rigidity adjusting part 23 is fixed to the card holder 2224 by the clamp spring 2225. A lower guide pin 2222 is disposed below the interior cavity 2221. The lower support portion 2223 is fit over the lower guide pin 2222 and is located at the bottom of the coil spring 21. The cushion pad 224 is fitted over the lower guide pin 2222 and is positioned between the lower support portion 2223 and the pedestal 31 of the axle housing 3. The lower guide pins 2222 are vertically inserted into the through holes of the pedestal 31 of the axle housing 3 through the cushion pads 224, thereby achieving the fixation of the suspension unit 2.
Example 2
The difference from embodiment 1 is that the rigidity adjusting part 23 is provided in a hollow spiral rubber pile structure, and the rest is the same as embodiment 1.
Example 3
The present embodiment provides a rail vehicle, which includes the primary suspension device of embodiment 1, and accordingly, the running stability and the bearing capacity of the rail vehicle are improved when the structure of the primary suspension device is optimized.
The present utility model is not limited to the above-described embodiments, and any modifications, improvements, substitutions, and the like, which may occur to those skilled in the art, fall within the scope of the present utility model without departing from the spirit of the utility model.
Claims (10)
1. A primary suspension device of a bogie is characterized by comprising a framework, a suspension unit and an axle box;
the framework is positioned above the axle box;
the axle box is provided with a bearing platform for fixing the suspension unit;
the suspension unit comprises a spiral spring, a positioning structure and a rigidity adjusting part; the spiral spring is fixed between the framework and the bearing platform of the axle box; the positioning structure is positioned in the spiral spring and is provided with an inner cavity; the rigidity adjusting part is arranged in the inner cavity and is used for adjusting the transverse rigidity and the longitudinal rigidity of the axle box.
2. The apparatus of claim 1, wherein the frame comprises a frame body, a first mount, and a damper mount;
the first mounting seat is arranged below the framework body and is used for mounting the suspension unit;
the damper mounting seats are symmetrically arranged on the outer side of the framework body along the vertical center line of the axle box and are positioned above the first mounting seat and used for being connected with a series of vertical dampers.
3. The apparatus of claim 2, further comprising a series of vertical shock absorbers secured between the shock absorber mount and the axle housing.
4. The apparatus of claim 2 wherein the stiffness-adjusting member is a laminated rubber stack.
5. The apparatus of claim 4, wherein the positioning structure comprises an upper positioning seat and a lower positioning seat;
one end of the upper positioning seat is fixedly connected with the first mounting seat, and the other end of the upper positioning seat penetrates through the rigidity adjusting part to be fixedly connected with the lower positioning seat;
the lower end of the lower positioning seat is connected with the bearing platform of the axle box.
6. The device of claim 5, wherein the upper positioning seat comprises an upper guide pin, a guide body, and an upper support;
the upper supporting part is sleeved on the upper guide pin and is positioned at the top of the spiral spring; the guide body is vertically arranged below the upper guide pin; the upper guide pin is disposed within the first mount away from a portion of the guide body.
7. The apparatus of claim 6, further comprising a spacer that is sleeved over the upper guide pin and between the upper support and the first mount.
8. The device of claim 5, wherein the lower positioning seat comprises a lower positioning seat body, a lower guide pin, a lower support portion, a clamping seat and a clamping spring;
the inner cavity is arranged in the lower positioning seat body;
the clamping seat is arranged at the upper part of the inner cavity; the clamping spring is used for fixing the rigidity adjusting part on the clamping seat; the lower guide pin is arranged below the inner cavity and is connected with the bearing platform of the axle box; the lower supporting part is sleeved on the lower guide pin and is positioned at the bottom of the spiral spring.
9. The apparatus of claim 8, further comprising a cushion pad that fits over the lower guide pin and is positioned between the lower support portion and the pedestal of the axle housing.
10. A rail vehicle comprising a bogie primary suspension device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597461.2U CN220163869U (en) | 2023-06-21 | 2023-06-21 | Primary suspension device for bogie and railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597461.2U CN220163869U (en) | 2023-06-21 | 2023-06-21 | Primary suspension device for bogie and railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220163869U true CN220163869U (en) | 2023-12-12 |
Family
ID=89055119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321597461.2U Active CN220163869U (en) | 2023-06-21 | 2023-06-21 | Primary suspension device for bogie and railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220163869U (en) |
-
2023
- 2023-06-21 CN CN202321597461.2U patent/CN220163869U/en active Active
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