CN109910938B - V-shaped rubber pile assembly and rigidity design method and application thereof - Google Patents
V-shaped rubber pile assembly and rigidity design method and application thereof Download PDFInfo
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- CN109910938B CN109910938B CN201910197383.9A CN201910197383A CN109910938B CN 109910938 B CN109910938 B CN 109910938B CN 201910197383 A CN201910197383 A CN 201910197383A CN 109910938 B CN109910938 B CN 109910938B
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Abstract
The invention relates to a V-shaped rubber stack assembly, which comprises a horizontally arranged mounting plate and a rubber stack which is vulcanized and bonded on the mounting plate, wherein the rubber stack comprises rubber layers, partition plates which are alternately laminated with the rubber layers and an outer plate which is arranged on the outermost layer, the rubber layers, the partition plates and the outer plate are vulcanized and bonded into a whole, the number of the rubber stacks is two, the rubber stacks are symmetrically arranged on the upper side and the lower side of the mounting plate and are bonded at the middle position of the mounting plate, the rubber stacks are obliquely arranged towards the longitudinal direction of a product, the two rubber stacks form V-shaped distribution with an included angle of α, and the included angle is more than 120 degrees and less than α and less than 180 degrees.
Description
Technical Field
The invention relates to a V-shaped rubber pile assembly, belongs to the technical field of vibration reduction suspension structures of rail vehicles, and further relates to a rigidity design method and application of the V-shaped rubber pile assembly.
Background
The rail vehicle is generally drawn by a locomotive or a motor car on two parallel rails, in order to ensure the safe operation of the vehicle, a running part, namely a bogie, is required to rotate through a wheel pair to enable the vehicle to translate along the rails, one of core structures of the bogie is a suspension damping device, and the suspension damping device has decisive influence on the stability and the safety of the vehicle in high-speed operation. The suspender joint type suspension component (metal suspender and spherical hinge) is a common suspension damping device, is a rubber-metal composite damping and connecting element, is mainly used for suspending components such as a gear box, a motor, an engine and the like of a vehicle on a vehicle body, can provide a multidirectional buffering original element, and plays a role in supporting and installing an interface. For example, the gear box is suspended between a vehicle body or a bogie frame by a lifting rod joint for suspending the gear box, the lifting rod joint not only can bear static load of the gear box and dynamic load generated in the motion processes of starting, braking, short-circuiting a traction motor and the like of a train, but also can meet the bearing rigidity requirement of each direction between the gear box and the bogie frame in the running process of the train so as to relieve various vibrations and impacts, and meanwhile, in order to facilitate installation, the lifting rod joint also needs to have the function of adjusting the installation size. For example: CN 201620775731.8 discloses a gearbox suspender assembly, which comprises a rod body, a slotted nut, an elastic rubber pad, a slotted gasket, an adjusting gasket and a check ring, wherein the rod body is of a double-ended stud structure, the slotted nut is arranged at the end part of the rod body, an annular bulge is arranged at the end part of the rod body, and the check ring is arranged on the annular bulge; the elastic rubber pad is sleeved on the rod body and is positioned between the check ring and the slotted nut.
The disadvantages of the boom articulated suspension elements of the prior art are:
1. the suspender articulated suspension part shown in figure 1 comprises a metal suspension mark and spherical hinges pressed at two ends of a metal suspender, the installation space of the suspender articulated suspension part is large, the weight is large, and the spherical hinges are complicated to press the suspender and connect the suspender, so that the suspender articulated suspension part is low in assembly efficiency, large in installation difficulty and high in installation space requirement.
2. The rigidity of the spherical hinge is adjusted to meet the rigidity requirements in all directions in the bearing process, the rigidity of the spherical hinge is determined by the rubber layer in the spherical hinge, and after the spherical hinge is pressed and enters the end part of the lifting rod, the rubber layer is limited, so that the deflection and torsional rigidity of the spherical hinge are high, the deflection and torsional deformation of the spherical hinge in the motion process are not facilitated, and the rigidity requirements in deflection, torsion, vertical direction, longitudinal direction and transverse direction are difficult to meet.
3. The combined structure of the hanger rod and the spherical hinge has high manufacturing cost and high production and maintenance cost.
Disclosure of Invention
The V-shaped rubber pile assembly provided by the invention has high vertical and transverse rigidity and low transverse and longitudinal rotating rigidity, meets the rigidity requirement in the suspension bearing process, improves the vibration reduction protection of a suspended piece, has higher vibration reduction reliability, meets the requirements of vibration reduction and motion deformation of suspension of a gear box, a motor and an engine, saves the installation space, is convenient to install and maintain and has low cost.
The invention also provides a rigidity design method and application of the V-shaped rubber pile assembly.
In order to achieve the purpose, the invention adopts the technical scheme that:
the V-shaped rubber stack assembly comprises a horizontally arranged mounting plate and a rubber stack which is vulcanized and bonded on the mounting plate, wherein the rubber stack comprises two rubber layers, partition plates which are alternately laminated with the rubber layers and an outer plate which is arranged on the outermost layer, and the rubber layers, the partition plates and the outer plate are vulcanized and bonded into a whole.
Preferably, the partition plate is a metal plate with a V-shaped structure, the vulcanization bonding surface of the outer plate and the rubber layer and the vulcanization bonding surface of the mounting plate and the rubber layer are V-shaped surfaces corresponding to the partition plate, and the V-shaped structures of the partition plates in the two rubber piles are arranged oppositely.
Preferably, each layer of the partition board and the outer layer of the plate are sequentially distributed in a step shape from inside to outside to form a rubber pile inclined towards the longitudinal direction of the product.
Preferably, the center of the rubber layer is provided with through holes arranged along the vertical direction, the through holes are tapered holes with gradually increasing diameters from inside to outside, and the maximum diameter of the through hole in the inner layer in the adjacent through holes is equal to the minimum diameter of the through hole in the outer layer.
Preferably, the upper surface of the outer plate of at least one rubber pile is an inclined surface, and the outer plate and the upper part are provided with wedges matched with the upper surface of the outer plate.
According to the rigidity design method of the V-shaped rubber pile assembly, the longitudinal angle α between two rubber piles is designed according to the bearing requirement of the V-shaped rubber pile assembly, so that the longitudinal rotation rigidity of the V-shaped rubber pile assembly on the mounting plate is adjusted, the shape of the partition plate is designed, so that the vertical, transverse and transverse rotation rigidities of the V-shaped rubber pile assembly are adjusted, the pre-compression amount of the rubber piles is designed, so that the initial rigidity of the V-shaped rubber pile assembly is adjusted, and the variable rigidity characteristic of the rubber piles is designed, so that the variable rigidity characteristic of the V-shaped rubber pile assembly is adjusted.
Preferably, "designing the shape of the partition plate so as to adjust the vertical, lateral and lateral rotational stiffness of the V-shaped rubber stack assembly" means that the partition plate is designed in a V-shaped structure, and the V-shaped angle of the partition plate is designed so as to improve the vertical and lateral stiffness of the V-shaped rubber stack assembly and reduce the lateral rotational stiffness.
Preferably, "designing the precompression amount of the rubber pile to adjust the initial stiffness of the V-shaped rubber pile assembly" means adjusting the precompression amount of the rubber pile by adjusting the depth of the wedge inserted between the outer deck and the installation position after the V-shaped rubber pile assembly is installed, thereby adjusting the initial stiffness of the V-shaped rubber pile assembly.
Preferably, "designing the variable stiffness characteristic of the rubber stack so as to adjust the variable stiffness characteristic of the V-shaped rubber stack assembly" means that a through hole is formed in a rubber layer of the rubber stack, the through hole is filled by deforming the rubber layer in a vertical bearing process so as to realize the variable stiffness of the V-shaped rubber stack assembly, the stiffness value of a variable stiffness inflection point of the V-shaped rubber stack assembly at each variable stiffness time is realized by designing the size of the through hole, and the variable stiffness times of the V-shaped rubber stack assembly are adjusted by designing the number of layers of the rubber layer.
The application of the V-shaped rubber stack assembly is to use the V-shaped rubber stack assembly as a suspension part on a bogie and/or a vehicle body of a railway vehicle to replace a suspension rod articulated suspension part on the bogie and/or the vehicle body.
The invention has the beneficial effects that:
the V-shaped rubber stack assembly is characterized in that rubber stacks symmetrically arranged on the upper side and the lower side of a mounting plate are vulcanized and bonded, the rubber stacks are arranged in a longitudinally inclined mode towards a product, the two rubber stacks which are vertically distributed form V-shaped distribution with an included angle of α, the vertical rigidity of the product is not changed, and the longitudinal rotation rigidity is effectively reduced.
The V-shaped rubber pile assembly comprises the mounting plate and the rubber pile, has a simple structure, does not need to adopt assembly processes such as press fitting and the like, is arranged in the middle of the mounting plate, has a compact structure, small space occupancy rate and small requirement on mounting space, is mounted and connected by the mounting plate, is in vibration damping contact with the rubber pile, can realize precompression of the rubber pile through combination with the mounting space, adjusts the initial rigidity of the rubber pile, improves the vibration damping effect and the mounting reliability, has stronger practicability, meets the requirements of vibration damping and motion deformation of suspension of a gear box, a motor and an engine, saves the mounting space, is convenient to mount and maintain and has low cost.
Through opening the through-hole in the rubber layer of rubber heap to realize the variable rigidity of product in vertical bearing process, through changing the number of piles of baffle, change the number of piles on rubber layer, thereby change the number of through-holes, with the multiple variable rigidity of the product that realizes vertical bearing process, improve the variable rigidity characteristic of product, adapt to vertical bearing process and become the rigidity demand, further improve the damping reliability of product, guarantee by the mounting stability and the reliability of flying piece under complicated vibrations and impact operating mode.
Drawings
Fig. 1 is a schematic view of a prior art boom articulated suspension unit.
FIG. 2 is a schematic view of the structure of a V-shaped rubber pile assembly.
Fig. 3 is a cross-sectional view taken along the direction X in fig. 2.
Fig. 4 is a cross-sectional view taken along the direction Y in fig. 2.
FIG. 5 is a cross-sectional view of a V-shaped rubber stack assembly with through holes in the rubber layer.
FIG. 6 is a schematic diagram of the adjustment of the precompression of the rubber pile by the engagement of the outer plates with the wedges after the installation of the V-shaped rubber pile assembly.
FIG. 7 is a graph illustrating stiffness variation of an embodiment V-shaped rubber stack assembly during vertical loading.
Detailed Description
The following describes an embodiment of the present invention in detail with reference to fig. 2 to 6.
The V-shaped rubber stack assembly comprises a horizontally arranged mounting plate 1 and a rubber stack 2 vulcanized and bonded on the mounting plate 1, wherein the rubber stack 2 comprises two rubber layers 21, partition plates 22 alternately laminated with the rubber layers 21 and outer plates 23 arranged on the outermost layer, and the rubber layers 21, the partition plates 22 and the outer plates 23 are vulcanized, bonded and bonded into a whole, and the V-shaped rubber stack assembly is characterized in that the two rubber stacks 2 are symmetrically arranged on the upper side and the lower side of the mounting plate 1 and bonded at the middle position of the mounting plate 1, the rubber stacks 2 are inclined towards the longitudinal direction of a product, the two rubber stacks 2 form V-shaped distribution with an included angle of α, and the included angle is more than 120 degrees and less than α.
As shown in the figure, the X direction in figure 2 corresponds to the longitudinal direction of a V-shaped rubber stack assembly, the Y direction corresponds to the axial direction of the V-shaped rubber stack assembly, the Z direction corresponds to the vertical direction of the V-shaped rubber stack assembly, the B direction in figure 3 corresponds to the longitudinal rotation direction of the V-shaped rubber stack assembly, and the A direction in figure 4 corresponds to the transverse rotation direction of the V-shaped rubber stack assembly.
The partition plate 22 is a metal plate with a V-shaped structure, the vulcanization bonding surface of the outer plate 23 and the rubber layer 21 and the vulcanization bonding surface of the mounting plate 1 and the rubber layer 21 are both V-shaped surfaces corresponding to the partition plate 22, and the V-shaped structures of the partition plates 22 in the two rubber stacks 2 are arranged oppositely. The partition plates 22 are metal plates with V-shaped structures, so that all layers in the rubber stack are of V-shaped structures, and the multi-layer V-shaped structural form improves the rigidity of the product in the vertical direction (namely Z direction) and the transverse direction (namely Y direction), and simultaneously effectively reduces the transverse rotation rigidity (namely A direction rotation rigidity), namely the deflection rigidity of the product in the bearing process, so that the technical problem that the deflection rigidity of a spherical hinge in a suspension part in a railway vehicle is large and deflection movement is difficult to carry out is solved, the rigidity requirement in the suspension bearing process is met, the vibration reduction protection of a hung part is improved, and the vibration reduction reliability is higher.
As shown in figure 3, the partition plates 22 and the outer plates 23 from inside to outside are distributed in a stepped manner in sequence to form the rubber piles 2 which are inclined towards the longitudinal direction of the product, the partition plates 22 and the outer plates 23 from inside to outside are distributed in a stepped manner in sequence to form the rubber piles 2 which are inclined towards the longitudinal direction, the two rubber piles 2 form V-shaped distribution with an included angle of α, the angle of 120 degrees is more than α degrees and less than 180 degrees, namely, the B-direction rotating rigidity of the V-shaped rubber pile assembly can be effectively reduced, and the vertical rigidity of the product is not influenced by the inclined arrangement of the rubber piles.
The central position of the rubber layer 21 is provided with through holes 21.1 arranged along the vertical direction, the through holes 21.1 are tapered holes with gradually increasing diameters from inside to outside, and the maximum diameter of the through holes 21.1 in the inner layer of the adjacent through holes 21.1 is equal to the minimum diameter of the through holes 21.1 in the outer layer. Through the through holes 21.1 arranged in the rubber layer 21, in the vertical bearing process of a product, the through holes 21.1 are gradually reduced through extrusion deformation of the rubber layer 21, when the through holes 21.1 are completely filled, the diameter is reduced to zero, namely a variable stiffness inflection point of the product, the through holes 21.1 in the rubber layer 21 positioned at the innermost layer are completely filled firstly, first variable stiffness is realized, then the through holes 21.1 in each rubber layer 21 from inside to outside are completely filled in sequence, the maximum diameter of the through holes 21.1 at the inner layer in the adjacent through holes 21.1 is equal to the minimum diameter of the through holes 21.1 at the outer layer, the through holes 21.1 are ensured to be filled from the inner layer to the outer layer one by one in sequence, and the effectiveness of multiple variable stiffness is effectively ensured. The number of layers of the rubber layer 21 is changed by changing the number of layers of the partition plate 22, so that the number of the through holes 21.1 is changed, multiple variable rigidity is realized, the variable rigidity requirement in the bearing process is met, the variable rigidity characteristic of a product is improved, the vibration reduction reliability of the product is further improved, and the installation stability and reliability of a hung piece under complex vibration and impact working conditions are ensured.
Wherein, the upper surface of the outer plate 23 of at least one rubber pile 2 is an inclined surface, and the outer plate 23 is provided with a wedge block 24 matched with the upper surface of the outer plate 23. After the V-shaped rubber stack assembly is installed, the precompression amount of the rubber stack 2 is adjusted by adjusting the depth of the wedge block 24 inserted between the outer plate 23 and the installation position 100, so as to adjust the initial rigidity of the V-shaped rubber stack assembly, and after the position of the wedge block 24 is determined, the wedge block can be fixed with the installation position of the V-shaped rubber stack assembly, so that the wedge block 24 is prevented from moving, and the positioning is ensured. An adjusting screw abutted against the outer layer plate 23 can be arranged at the mounting position 100, and the pre-compression amount of the rubber pile is adjusted by pressing the adjusting screw on the outer layer plate 23, so that the purpose of adjusting the initial rigidity of the product is achieved.
According to the rigidity design method of the V-shaped rubber pile assembly, according to the bearing requirement of the V-shaped rubber pile assembly, the longitudinal angle α between the two rubber piles 2 is designed, so that the longitudinal rotation rigidity of the V-shaped rubber pile assembly on the mounting plate 1 is adjusted, the shape of the partition plate 22 is designed, so that the vertical, transverse and transverse rotation rigidities of the V-shaped rubber pile assembly are adjusted, the pre-compression amount of the rubber piles 2 is designed, so that the initial rigidity of the V-shaped rubber pile assembly is adjusted, and the variable rigidity characteristic of the rubber piles 2 is designed, so that the variable rigidity characteristic of the V-shaped rubber pile assembly is adjusted.
The expression "designing the shape of the partition plate 22 to adjust the vertical, horizontal, and horizontal rotational stiffness of the V-shaped rubber stack assembly" means that the partition plate 22 is designed to have a V-shaped structure, and the V-shaped angle of the partition plate 22 is designed to improve the vertical and horizontal stiffness of the V-shaped rubber stack assembly and reduce the horizontal rotational stiffness.
Herein, "designing the precompression amount of the rubber pile 2 to adjust the initial rigidity of the V-shaped rubber pile assembly" means adjusting the precompression amount of the rubber pile 2 by adjusting the depth of the wedge 24 inserted between the outer plate 23 and the installation position after the V-shaped rubber pile assembly is installed, thereby adjusting the initial rigidity of the V-shaped rubber pile assembly.
The 'designing of the variable stiffness characteristic of the rubber stack 2 and therefore adjustment of the variable stiffness characteristic of the V-shaped rubber stack component' means that a through hole 21.1 is formed in a rubber layer 21 of the rubber stack 2, the variable stiffness of the V-shaped rubber stack component is achieved by deforming and filling the through hole 21.1 in the rubber layer 21 in the vertical bearing process, the stiffness value of a variable stiffness inflection point of the V-shaped rubber stack component during each variable stiffness is achieved by designing the size of the through hole 21.1, and the variable stiffness times of the V-shaped rubber stack component are adjusted by designing the number of layers of the rubber layer 21. As shown in fig. 7, the V-shaped rubber stack assembly generates four times of stiffness variation in the vertical bearing process, four stiffness variation inflection points are formed and are respectively S1, S2, S3 and S4, the diameter of each layer of through hole 21.1 is designed, so that the coordinate value of each stiffness variation inflection point in the stiffness curve, namely the stiffness value of the stiffness variation inflection point, can be adjusted, and the number of stiffness variation times, namely the number of stiffness variation inflection points in the stiffness curve, can be adjusted by designing the number of layers of the rubber layer 21.
According to the rigidity design method of the V-shaped rubber stack assembly, the vertical rigidity and the transverse rigidity of the product are effectively increased according to the bearing requirement of the product, the transverse and longitudinal rotating rigidity of the product is reduced, the rigidity requirement in the suspension bearing process is met, the vibration reduction protection of a suspended piece is improved, and the vibration reduction reliability is higher; through the through holes 21.1 arranged in the rubber layer 21 of the rubber stack 2, the variable rigidity of the product in the vertical bearing process is realized, and the number of the layers of the rubber layer is changed by changing the number of the layers of the partition plates, so that the number of the through holes is changed, the multiple variable rigidity of the product in the vertical bearing process is realized, the variable rigidity characteristic of the product is improved, and the variable rigidity requirement in the vertical bearing process is met; through the combination with the installation space, the precompression of the rubber piles is realized, and the initial rigidity of the rubber piles is adjusted so as to meet the requirements of vibration reduction and motion deformation of the suspension of a gear box, a motor and an engine.
Use of a V-shaped rubber-tyred assembly for use as a suspension element on a bogie and/or a car body of a rail vehicle to replace a boom articulated suspension element on the bogie and/or the car body. The vibration reduction and motion deformation requirements of the suspension of the gear box, the motor and the engine are met, the installation space is saved, the installation and the maintenance are convenient, and the cost is low.
The technical solutions of the embodiments of the present invention are fully described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (10)
- The V-shaped rubber stack assembly comprises a horizontally arranged mounting plate (1) and a rubber stack (2) vulcanized and bonded on the mounting plate (1), wherein the rubber stack (2) comprises two rubber layers (21), partition plates (22) alternately laminated with the rubber layers (21) and an outer plate (23) arranged on the outermost layer, the rubber layers (21), the partition plates (22) and the outer plate (23) are vulcanized and bonded into a whole, the V-shaped rubber stack assembly is characterized in that the two rubber stacks (2) are symmetrically arranged on the upper side and the lower side of the mounting plate (1) and bonded in the middle of the mounting plate (1), the rubber stacks (2) are obliquely arranged towards the longitudinal direction of a product, the two rubber stacks (2) form V-shaped distribution with an included angle of α, 120 degrees < α < 180 degrees, compared with a hanger rod articulated suspension component in the prior art, the vertical direction of the V-shaped rubber stack assembly is equivalent to the radial direction of a spherical hinge, the axial direction of the spherical hinge, the transverse rotation of the V-shaped rubber stack assembly is equivalent to the deflection of the spherical hinge, the longitudinal rotation of the V-shaped rubber stack assembly is equivalent to the outer layer and the longitudinal direction of the outer layer (22) and the outer layer of the rubber stack.
- 2. The V-shaped rubber stack assembly according to claim 1, wherein the partition plates (22) are metal plates with V-shaped structures, the vulcanization bonding surfaces of the outer plate (23) and the rubber layer (21) and the vulcanization bonding surfaces of the mounting plate (1) and the rubber layer (21) are both V-shaped surfaces corresponding to the partition plates (22), and the V-shaped structures of the partition plates (22) in the two rubber stacks (2) are arranged oppositely.
- 3. The V-shaped rubber stack assembly according to claim 1, wherein each layer of the partition plates (22) and the outer layer of the plate (23) are arranged in a stepped manner from inside to outside in sequence to form the rubber stack (2) inclined towards the longitudinal direction of the product.
- 4. The V-shaped rubber stack assembly according to claim 1, wherein the rubber layer (21) is provided with through holes (21.1) at the center thereof, the through holes (21.1) are tapered holes with gradually increasing diameters from inside to outside, and the maximum diameter of the through hole (21.1) at the inner layer in the adjacent through holes (21.1) is equal to the minimum diameter of the through hole (21.1) at the outer layer.
- 5. A V-shaped rubber stack assembly according to claim 1, characterized in that the upper surface of the outer plate (23) of at least one rubber stack (2) is bevelled and that the outer plate (23) is provided with wedges (24) which cooperate with the upper surface of the outer plate (23).
- 6. The rigidity design method of the V-shaped rubber stack assembly of any one of claims 1 to 5, wherein according to the bearing requirement of the V-shaped rubber stack assembly, a longitudinal angle α between two rubber stacks (2) is designed so as to adjust the longitudinal rotation rigidity of the V-shaped rubber stack assembly on a mounting plate (1), the shape of a partition plate (22) is designed so as to adjust the vertical, transverse and transverse rotation rigidity of the V-shaped rubber stack assembly, the pre-compression amount of the rubber stacks (2) is designed so as to adjust the initial rigidity of the V-shaped rubber stack assembly, and the variable rigidity characteristic of the rubber stacks (2) is designed so as to adjust the variable rigidity characteristic of the V-shaped rubber stack assembly.
- 7. The rigidity design method according to claim 6, wherein the 'designing the shape of the partition plate (22) to adjust the vertical, lateral and lateral rotational rigidities of the V-shaped rubber stack assembly' means that the partition plate (22) is designed in a V-shaped configuration and the V-shaped angle of the partition plate (22) is designed to increase the vertical and lateral rigidities of the V-shaped rubber stack assembly and decrease the lateral rotational rigidity.
- 8. The rigidity design method according to claim 6, wherein "designing the precompression amount of the rubber pile (2) to adjust the initial rigidity of the V-shaped rubber pile assembly" means adjusting the precompression amount of the rubber pile (2) by adjusting the depth of the wedge (24) inserted between the outer plate (23) and the installation position after the V-shaped rubber pile assembly is installed to adjust the initial rigidity of the V-shaped rubber pile assembly.
- 9. The rigidity design method according to claim 6, wherein the step of designing the variable rigidity characteristic of the rubber stack (2) so as to adjust the variable rigidity characteristic of the V-shaped rubber stack component is that a through hole (21.1) is formed in a rubber layer (21) of the rubber stack (2), the through hole (21.1) is filled through deformation of the rubber layer (21) in a vertical bearing process so as to realize variable rigidity of the V-shaped rubber stack component, the rigidity value of a variable rigidity inflection point of the V-shaped rubber stack component each time the variable rigidity is realized through designing the size of the through hole (21.1), and the variable rigidity times of the V-shaped rubber stack component is adjusted through designing the number of layers of the rubber layer (21).
- 10. Use of a V-shaped rubber stack assembly according to any one of claims 1 to 5 as a suspension element on a bogie and/or a car body of a rail vehicle to replace a boom articulated suspension element on a bogie and/or a car body.
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| CN111907547A (en) * | 2019-07-04 | 2020-11-10 | 中车大同电力机车有限公司 | Bogie and vehicle with same |
| CN113294469A (en) * | 2021-05-24 | 2021-08-24 | 株洲时代瑞唯减振装备有限公司 | Rubber pad bearing performance adjusting method and composite rubber pad |
| CN114228768B (en) * | 2022-01-04 | 2024-02-27 | 西南交通大学 | Axle box bogie in rail vehicle |
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Effective date of registration: 20200610 Address after: 412007 No.301, physical and chemical building, Liyu Industrial Park, no.639, Heilongjiang Road, Tianyuan District, Zhuzhou City, Hunan Province Applicant after: Zhuzhou Times Ruiwei damping equipment Co., Ltd Address before: 412007 No. 18 Haitian Road, Tianyuan District, Hunan, Zhuzhou Applicant before: Zhuzhou Times New Material Technology Co.,Ltd. |
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