CN113911158A - Primary suspension spring for built-in axle box body bogie - Google Patents
Primary suspension spring for built-in axle box body bogie Download PDFInfo
- Publication number
- CN113911158A CN113911158A CN202111098930.1A CN202111098930A CN113911158A CN 113911158 A CN113911158 A CN 113911158A CN 202111098930 A CN202111098930 A CN 202111098930A CN 113911158 A CN113911158 A CN 113911158A
- Authority
- CN
- China
- Prior art keywords
- spring
- plate spring
- rubber
- springs
- axle box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
- B61F5/302—Leaf springs
-
- 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
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The invention provides a primary suspension spring for a built-in axle box body bogie, wherein a rubber spring is fixed at the bottom of a plate spring, the plate spring is fixed with a bogie frame, and the rubber spring is erected on an axle box; the plate spring assembly comprises an upper plate spring, a lower plate spring and an end part connecting piece for connecting the upper plate spring and the lower plate spring; a gap is formed between the upper plate spring and the lower plate spring, and two ends of the upper plate spring and two ends of the lower plate spring are connected through end connecting pieces respectively. The two plate springs bear vertical load together, the two plate springs have vertical stop stops to prevent the plate springs from deforming too much, the two quick plate springs are symmetrically arranged, and the end part connecting piece with the rubber layer is adopted to eliminate shearing deformation of the end parts of the plate springs to the rubber springs. The technical problems that in the prior art, the stress of a plate spring is high, the reliability of a rubber spring is low, and the plate spring is easy to damage in overload are solved.
Description
Technical Field
The invention relates to the technical field of primary suspension systems of railway vehicles, in particular to a primary suspension spring for a built-in axle box body bogie.
Background
In railway vehicle bogies, particularly railway passenger cars and motor train unit bogies, in order to isolate and reduce the transmission of vibrations between wheel rails into a vehicle body where passengers are located, the bogies are provided with primary suspension springs and secondary suspension springs. The primary suspension spring is mainly divided into two types, namely a steel spiral spring and a metal rubber conical spring according to the shape and the main material, and the two types of springs are cylindrical or conical. The static deflection of a primary suspension spring is required to be more than 50mm, the maximum dynamic deflection reaches nearly 100mm, and a steel spiral spring and a metal rubber conical spring need a large installation space. A driving device, a braking device and the like are required to be installed on an axle of a motor train unit bogie, particularly a motor train bogie, and the transverse installation space is limited.
The bogie with the built-in axle box body can effectively reduce unsprung mass, reduce wheel rail abrasion and effectively reduce operation cost. Meanwhile, the maintenance cost of the track is reduced, and the maintenance period can be gradually prolonged. In order to reduce the life cycle cost of the line and the rail vehicle, the built-in axle box body bogie is the main development direction of the motor train unit bogie. Compared with an external bogie, the built-in bogie has more limited transverse space, and a spiral steel spring and a metal rubber conical spring adopted by the traditional primary suspension system have large volumes and are not suitable for the limited space of the built-in bogie.
The patent number is 2020221417129, the name is a chinese utility model patent of combined material plate spring structure for rail vehicle primary suspension, a primary suspension spring of constituteing by a carbon fiber plate spring, two rubber spring and stromatolite spring is disclosed, carbon fiber plate spring is bow-shaped structure, two rubber spring link firmly respectively at carbon fiber plate spring's both ends, the range upon range of spring links firmly at carbon fiber plate spring's middle part, the range upon range of spring is by upper metal sheet, middle level-rubber piece and lower floor's metal sheet through vulcanization mode integrated into one piece's spring structure. The utility model discloses a can subtract heavy 80% for a series of suspension of having spiral steel spring, can also save more horizontal spaces for built-in bogie. According to the primary suspension system spring disclosed by the technical scheme, 1, a carbon fiber plate spring bears load, and the stress of the plate spring is high under the condition of meeting the vertical deflection; 2. the rubber spring of this technical scheme operating mode is abominable, and the reliability is lower, specifically is: in the working process, the primary suspension system spring bears a vertical load, wherein the plate spring can extend to generate longitudinal displacement when being pressed to drive the rubber spring to shear and deform, namely, the specific embodiment of the reference document shows that the transverse and longitudinal stiffness of the rubber spring 2 is smaller than that of the carbon fiber plate spring 1 to release the longitudinal displacement of the carbon fiber plate spring 1, and the rubber spring is subjected to larger shearing force; because the end part of the plate spring in the technical scheme can deflect in the actual working condition, the rubber spring top plate and the rubber spring bottom plate which are connected with the end part of the plate spring cannot be kept parallel, the rubber spring has a larger instability risk, and the longitudinal stiffness of the rubber spring needs to be greatly increased in order to reduce the instability risk of the rubber spring, which is contradictory to the fact that the smaller longitudinal stiffness is needed for releasing the longitudinal displacement of the plate spring; 3. in the running process of a vehicle, a series of suspension springs have limit working conditions, and when the load exceeds the design limit value, the carbon fiber plate springs are easy to damage due to overlarge stress and do not meet the actual working conditions.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a primary suspension spring which is low in structural stress, high in reliability and suitable for a built-in axle box body bogie and meets the actual working condition.
A primary suspension spring for a built-in axle box body bogie comprises a plate spring assembly and a rubber spring, wherein the rubber spring is fixed at the bottom of the plate spring assembly, the plate spring assembly is fixed with a bogie frame, and the rubber spring is erected on an axle box; the plate spring assembly comprises an upper plate spring, a lower plate spring and an end part connecting piece for connecting the upper plate spring and the lower plate spring; a gap is formed between the upper plate spring and the lower plate spring, and two ends of the upper plate spring and two ends of the lower plate spring are connected through end connecting pieces respectively.
The built-in axle box body bogie is arranged between the bogie and the axle box by a series of suspension springs, the plate spring assembly is formed by connecting an upper plate spring and a lower plate spring (two plate springs), under the same length, width and assembly rigidity and under the same load, the stress of the two plate springs relative to one plate spring is smaller, and when the same large dynamic deflection is realized, the safety coefficient of the two plate springs is higher. A gap is formed between the upper plate spring and the lower plate spring, and provides a space for deformation of the plate spring, so that linear stiffness is ensured, and enough vertical dynamic deflection is ensured.
The rubber spring has the function of preventing most high-frequency vibration between the wheel rails from being upwards transmitted to the plate spring, and the plate spring is used for realizing large deflection, meeting the requirement on the dynamic performance of the bogie and ensuring the stability and the riding comfort of a vehicle.
Furthermore, the upper plate spring and the lower plate spring are symmetrically distributed, and the upper plate spring and the lower plate spring are bent towards opposite directions respectively to form oval gaps.
Furthermore, the upper plate spring and the lower plate spring are both of long blade-shaped structures, the length of each long blade-shaped structure is far greater than the width and the thickness of each long blade-shaped structure, the width of each long blade-shaped structure is 1/25-1/4, and the thickness of each long blade-shaped structure is 1/50-1/10.
The length of the plate spring is far greater than the width and thickness dimensions, so that the plate spring is ensured to have smaller rigidity and large vertical deformability, and larger dynamic deflection is ensured.
Further, the upper plate spring and the lower plate spring are both resin-based fiber reinforced composite materials.
The upper plate spring and the lower plate spring are made of resin-based continuous fiber reinforced composite materials, and the continuous fiber reinforced composite materials have the advantages of high specific strength, good fatigue performance, safe fracture and the like, and can effectively reduce the weight of the plate springs.
Furthermore, the vertical stopping device further comprises a vertical stopping piece, wherein the vertical stopping piece is positioned in a gap between the upper plate spring and the lower plate spring, and the vertical stopping piece is installed on the upper plate spring or the lower plate spring.
The vertical backstop is used for preventing the plate spring assembly from further compression deformation when the plate spring assembly deforms to the maximum deflection, so that the purpose of protecting the plate spring assembly is achieved, and the plate spring assembly conforms to the actual working condition.
Further, the vertical stop comprises a base and rubber which are connected with each other, and the base and the rubber are vulcanized into a whole; when the vertical backstop is fixed with the upper plate spring, the base is respectively connected with the upper plate spring and the bogie frame.
Further, the base has a U-shaped receiving cavity for receiving the upper leaf spring and a connecting plate for connecting the bogie frame.
Furthermore, the end part connecting piece consists of an upper plate spring seat, a lower plate spring seat and a rubber layer between the upper plate spring seat and the lower plate spring seat, the rubber layer comprises a first multilayer rubber layer and a first multilayer partition plate, the first rubber layer and the first partition plate are arranged at intervals, and the upper plate spring seat, the lower plate spring seat, the first rubber layer and the first partition plate are vulcanized into a whole; the upper plate spring seat is fixed with the upper plate spring, and the lower plate spring seat is fixed with the lower plate spring, so that the upper plate spring is connected with the lower plate spring.
The plate springs are arranged in an up-and-down symmetrical mode, when the plate springs bear vertical loads, two ends of the upper plate spring and two ends of the lower plate spring extend simultaneously, when the rigidity of the upper plate spring is the same as that of the lower plate spring, the extension amounts of the two ends of the plate springs are the same, and the end connecting pieces do not bear longitudinal shearing force; the rigidity of each plate spring can be deviated due to various reasons in the manufacturing process, when the rigidity of the upper plate spring is different from that of the lower plate spring, the longitudinal extension amount between the upper plate spring and the lower plate spring is different, when the rigidity difference of the upper plate spring and the lower plate spring is 10%, the difference of the longitudinal extension amount is less than 1mm, and the deformation amount is completely realized by the end connecting piece. The end part connecting piece not only plays a role of connecting the upper plate spring and the lower plate spring, but also eliminates the difference of the longitudinal extension amount between the upper plate spring and the lower plate spring when the plate springs are loaded, and can rotate around the two end parts, the influence of the extension amount of the two ends on the rubber spring when the plate springs are vertically loaded is eliminated by the plate spring assembly, the rubber spring does not bear the shearing deformation brought by the plate spring any more, and the reliability of the rubber spring is improved.
Furthermore, the number of the rubber springs is two, the two rubber springs are connected with the lower plate spring through the middle connecting plate, each rubber spring comprises a second multilayer rubber layer and a second multilayer partition plate, and the second rubber layer and the second partition plate are arranged at intervals; the second rubber layer, the second partition plate and the middle connecting plate are vulcanized into a whole.
Furthermore, two reinforcing ribs which are parallel to each other are arranged on the middle connecting plate, and a U-shaped groove formed by the two reinforcing ribs and the middle connecting plate is used for accommodating the lower plate spring; the lower plate spring is provided with a base plate, and the base plate and the two reinforcing ribs are fixed to clamp the lower plate spring in the middle.
The invention has the following beneficial effects:
the built-in axle box body bogie uses a series of suspension springs, the plate spring assembly comprises an upper plate spring and a lower plate spring, under the condition of same rigidity and same load, the stress of two plate springs is smaller relative to one plate spring, and when the same large dynamic deflection is realized, the safety coefficient of the two plate springs is higher; a gap is arranged between the upper plate spring and the lower plate spring; and a gap is reserved, and when the vertical load is applied, the gap is reserved for the deformation of the upper plate spring and the lower plate spring, so that the plate spring is ensured to have good elastic performance and larger dynamic deflection. Furthermore, a vertical stop is arranged to prevent the plate spring from further compressing and deforming when the plate spring deforms to the maximum deflection, so that the aim of protecting the plate spring is fulfilled. The upper plate spring and the lower plate spring are connected through the end part connecting piece, the end part connecting piece is composed of an upper plate spring seat, a lower plate spring seat and a rubber layer between the upper plate spring seat and the lower plate spring seat, when the plate springs are loaded, the upper plate spring and the lower plate spring can rotate around the end part connecting pieces at two ends, the longitudinal elongation difference between the upper plate spring and the lower plate spring is eliminated when the plate springs bear, the influence of the elongation at two ends on the rubber springs when the plate springs are vertically loaded is eliminated by the plate spring assembly, the rubber springs do not bear the shearing deformation brought by the plate springs, and the reliability of the rubber springs is improved. The rubber layer does not need lubrication maintenance and abnormal sound does not occur.
The invention is provided with a plate spring assembly with two plate springs, wherein the two plate springs bear vertical load together and have gaps for providing good static deflection and dynamic deflection; the vertical backstop is arranged, when the primary suspension spring device is subjected to a large load and exceeds a design limit value, the vertical backstop plays a role in protecting the plate spring assembly, the service life of the plate spring is prolonged, and the performance of the plate spring is not influenced by the limit load; the end connecting piece with the rubber layer is arranged, so that the difference of the longitudinal extension amounts of the upper plate spring and the lower plate spring is eliminated, the longitudinal deformation of the plate spring assembly is released, and the influence of the longitudinal extension amount of the plate spring on the rubber spring is eliminated. The plate spring assembly is simple and compact in structure and good in effect, and has the linear rigidity requirement which can be met by a steel spiral spring and a metal rubber conical spring under the condition of ensuring excellent structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a series of suspension springs for an axle box truck.
Fig. 2 is a schematic structural view of a leaf spring assembly.
FIG. 3 is a schematic view of a vertical stop.
Fig. 4 is a schematic view of an end connector configuration.
Fig. 5 is a schematic view of a rubber spring structure.
1 is a plate spring assembly, 11 is an upper plate spring, 12 is a lower plate spring, 13 is an end connecting piece, 131 is an upper plate spring seat, 132 is a lower plate spring seat, 133 is a first rubber layer, 134 is a first clapboard, and 14 is a gap; 2 is a rubber spring, 21 is a second rubber layer, and 22 is a second clapboard; 3 for vertical backstop, 31 is rubber, 32 is the U type and holds the chamber, 33 is the connecting plate, 4 is intermediate junction plate, 5 is the strengthening rib, 6 is U type groove, 7 is the backing plate, 8 is the bogie frame.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
A series of suspension springs for a built-in axle box body bogie of a built-in axle box body are provided, as shown in figure 1, the suspension springs comprise plate spring assemblies 1 and rubber springs 2, the rubber springs 2 are fixed at the bottoms of the plate spring assemblies 1, the plate spring assemblies 1 are fixed with a bogie frame, and the rubber springs 2 are erected on an axle box; the plate spring assembly 1 comprises an upper plate spring 11, a lower plate spring 12 and an end connecting piece 13 connecting the upper plate spring 11 and the lower plate spring 12; the upper plate spring 11 and the lower plate spring 12 have a gap 14 therebetween, and both ends of the upper plate spring 11 and the lower plate spring 12 are connected by end connectors 13, respectively.
The upper plate spring 11 and the lower plate spring 12 are symmetrically distributed, and the upper plate spring 11 and the lower plate spring 12 are respectively bent in opposite directions to form an oval gap 14.
The upper plate spring 11 and the lower plate spring 12 are both of long blade-shaped structures with the length far greater than the width and thickness, and the length is 600mm, the width is 80mm, and the thickness is 20 mm.
The upper plate spring 11 and the lower plate spring 12 are both made of resin-based fiber reinforced composite materials.
And the vertical stopping device further comprises a vertical stopping piece 3, as shown in figure 1, wherein the vertical stopping piece 3 is positioned in a gap 14 between the upper plate spring 11 and the lower plate spring 12, and the vertical stopping piece 3 is arranged on the upper plate spring 11.
As shown in fig. 3, the vertical stopper 3 comprises a base and a rubber 31 connected with each other, and the base and the rubber 31 are vulcanized into a whole; the base is connected with the upper plate spring 11 and the bogie frame respectively.
The base has a U-shaped receiving cavity 32 for receiving the upper leaf spring and a connecting plate 33 for connecting to the bogie frame. The connecting plate 33 is provided with a screw hole, and the connecting plate 33 is connected with the bogie frame through a bolt.
As shown in fig. 4, the end connector 13 is composed of an upper plate spring seat 131, a lower plate spring seat 132 and a rubber layer between the upper plate spring seat 131 and the lower plate spring seat 132, the rubber layer includes a first multilayer rubber layer 133 and a first multilayer diaphragm 134, the first multilayer rubber layer 133 and the first multilayer diaphragm 134 are arranged at intervals, and the upper plate spring seat 131, the lower plate spring seat 132, the first multilayer rubber layer 133 and the first diaphragm 134 are vulcanized into a whole; the upper plate spring seat 131 is fixed to the upper plate spring 11, and the lower plate spring seat 132 is fixed to the lower plate spring 12, thereby connecting the upper plate spring 11 to the lower plate spring 12.
As shown in fig. 5, two rubber springs 2 are provided, the two rubber springs 2 are connected with the lower plate spring 12 through the middle connecting plate 4, the rubber springs 2 comprise a plurality of layers of rubber layers II 21 and a plurality of layers of partition plates II 22, and the rubber layers II 21 and the partition plates II 22 are arranged at intervals; the second rubber layer 21, the second partition plate 22 and the intermediate connecting plate 4 are vulcanized into a whole.
Two reinforcing ribs 5 which are parallel to each other are arranged on the middle connecting plate 4, and U-shaped grooves 6 formed by the two reinforcing ribs 5 and the middle connecting plate 4 are used for accommodating the lower plate springs 12; as shown in fig. 1, the lower plate spring 12 is provided with a backing plate 7, and the backing plate 7 is fixed with two reinforcing ribs 5 to clamp the lower plate spring 12 in the middle. As shown in fig. 1, the intermediate connecting plate 4 is mounted in the middle of the lower plate spring 12, screw holes are formed in the reinforcing ribs 5, and the reinforcing ribs 5 are connected with the backing plate 7 through bolts.
The built-in axle box body bogie of the embodiment uses a series of suspension springs, and is provided with a plate spring assembly 1 with two plate springs (namely an upper plate spring 11 and a lower plate spring 12), wherein the two plate springs bear vertical load together, and are opposite to one plate spring of a comparison document, under the condition of the same length, width and assembly stiffness, when the same-size load is applied, the stress of the two plate springs is smaller relative to the one plate spring, and when the same large dynamic deflection is realized, the safety factor of the two plate springs is higher; in order to ensure larger dynamic deflection, a gap 14 is arranged between the two plate springs to provide a space for deformation. According to the stress condition of the plate spring, as shown in fig. 2, the upper plate spring 11 is bent upwards, and the lower plate spring 12 is bent downwards to form an oval plate spring assembly 1, which conforms to the stress characteristic of the plate spring. To further ensure larger deflection, the upper plate spring 11 and the lower plate spring 12 are both long blade-shaped structures with length much larger than width and thickness dimensions.
When the load reaches the design limit value, the vertical stop 3 contacts the upper surface of the lower plate spring 12, and when the plate spring assembly 1 deforms to the maximum deflection, the plate spring assembly 1 is prevented from further compression deformation, so that the purpose of protecting the plate spring assembly 1 is achieved, and the actual working condition is met.
The end connector 13 includes an upper plate spring seat 131, a rubber layer, and a lower plate spring seat 132. The rubber layer comprises a plurality of rubber layers one 133 and a plurality of partition plates one 134, the rubber layers one 133 and the partition plates one 134 are arranged at intervals, the number of layers of the partition plates one 134 and the rubber layers one 133 is 2-6, the partition plates one 134 and the rubber layers one 133 are arc-shaped, and the arc-shaped orientation can face upwards to the upper plate spring seat 131 or downwards to the lower plate spring seat 132. The end connecting piece 13 is used for eliminating the difference of the longitudinal extension amount between the upper plate spring and the lower plate spring when the elliptic plate spring assembly 1 is loaded, and can rotate around the two end parts, so that the lubrication maintenance is not needed in the using process, and no noise exists. When the plate spring is compressed, the end parts can rotate relatively, and the rotational rigidity of the first arc-shaped partition plates 134 and the first rubber layers 133 is smaller, so that the rotational deformation of the end parts is facilitated.
The upper plate spring 11 and the lower plate spring 12 are both resin-based fiber reinforced composite materials, and the continuous fiber reinforced composite materials have the advantages of high specific strength, good fatigue performance, safe fracture and the like, and can effectively reduce the weight of the plate springs. The upper plate spring 11 and the lower plate spring 12 may have the same structure and rigidity performance, or may have different structures and rigidity performance.
The base has a U-shaped receiving cavity 32 for receiving the upper leaf spring 11 and a connecting plate 33 for connecting to the bogie frame. Two reinforcing ribs 5 which are parallel to each other are arranged on the middle connecting plate 4, and U-shaped grooves 6 formed by the two reinforcing ribs 5 and the middle connecting plate 4 are used for accommodating the lower plate springs 12. The upper plate spring 11 is arranged in the U-shaped accommodating cavity 32, the lower plate spring 12 is arranged in the U-shaped groove 6, neither the upper plate spring 11 nor the lower plate spring 12 is connected with other part fasteners, the upper plate spring 11 and the lower plate spring 12 are resin-based fiber reinforced composite materials, and if fasteners penetrate through the upper plate spring 11 and the lower plate spring 12, the fibers in the materials can be broken, and the performance is influenced.
The primary suspension spring for the built-in axle box body bogie in the embodiment has an excellent structure, two plate springs bear vertical load together, the vertical stop 3 is arranged to prevent the plate springs from deforming, and the end connecting piece 13 with the rubber layer and the rubber spring 2 bear longitudinal shearing force together. And further optimizing the structure on the basis, setting the plate spring to be in a long-blade structure, setting the rubber layer and the partition plate of the end connecting piece 13 to be in an arc shape, and installing the plate spring made of the resin-based fiber reinforced composite material without using a fastener. The technical problems that in the prior art, the stress of a plate spring is high, the reliability of a rubber spring is low, and the plate spring is easy to damage in overload are solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The built-in axle box body bogie uses a series of suspension springs, including leaf spring assembly and rubber spring, the rubber spring is fixed to the bottom of the leaf spring assembly, the leaf spring assembly is fixed with bogie frame, the rubber spring is set up on axle box; the plate spring assembly is characterized by comprising an upper plate spring, a lower plate spring and an end part connecting piece for connecting the upper plate spring and the lower plate spring; a gap is formed between the upper plate spring and the lower plate spring, and two ends of the upper plate spring and two ends of the lower plate spring are connected through end connecting pieces respectively.
2. The primary suspension spring for an axle box bogie as claimed in claim 1, wherein said upper and lower leaf springs are symmetrically distributed, and wherein said upper and lower leaf springs are bent in opposite directions to form elliptical voids, respectively.
3. The primary suspension spring for a built-in axle box bogie as claimed in claim 1, wherein said upper and lower leaf springs each have a long leaf-like structure with a length greater than the dimensions of width and thickness, said width being 1/25-1/4 of the length and said thickness being 1/50-1/10 of the length.
4. The primary suspension spring for an axle box bogie as recited in claim 1, wherein said upper and lower leaf springs are each a resin-based fiber-reinforced composite material.
5. The primary suspension spring for an axle box bogie as recited in claim 1, further comprising a vertical stop located in the gap between said upper and lower leaf springs, said vertical stop being mounted to either said upper or lower leaf spring.
6. The primary suspension spring for an axle box truck according to claim 5 wherein said vertical stop comprises a base and rubber connected to each other, the base and rubber being vulcanized together; when the vertical backstop is installed on the upper plate spring, the base is respectively connected with the upper plate spring and the bogie frame.
7. The primary suspension spring for an axle box truck according to claim 6 wherein said base has a U-shaped receiving cavity for receiving said upper leaf spring and a web for connecting to a truck frame.
8. The primary suspension spring for the bogie of the built-in axle box body according to claim 1, wherein the end connecting piece is composed of an upper spring seat, a lower spring seat and a rubber layer between the upper spring seat and the lower spring seat, the rubber layer comprises a plurality of rubber layers I and a plurality of partition plates I, the rubber layers I and the partition plates I are arranged at intervals, and the upper spring seat, the lower spring seat, the rubber layers I and the partition plates I are vulcanized into a whole; the upper plate spring seat is fixed with the upper plate spring, and the lower plate spring seat is fixed with the lower plate spring, so that the upper plate spring is connected with the lower plate spring.
9. The primary suspension spring for the axle box bogie according to claim 1, wherein the number of the rubber springs is two, the two rubber springs are connected with the lower plate spring through the middle connecting plate, the rubber springs comprise a second multilayer rubber layer and a second multilayer clapboard, and the second rubber layer and the second clapboard are arranged at intervals; the second rubber layer, the second partition plate and the middle connecting plate are vulcanized into a whole.
10. The primary suspension spring for the axle box bogie as recited in claim 9, wherein the intermediate connecting plate is provided with two parallel reinforcing ribs, and the U-shaped grooves formed by the two reinforcing ribs and the intermediate connecting plate are used for accommodating the lower plate spring; the lower plate spring is provided with a base plate, and the base plate and the two reinforcing ribs are fixed to clamp the lower plate spring in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098930.1A CN113911158B (en) | 2021-09-18 | 2021-09-18 | Primary suspension spring for built-in axle box body bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098930.1A CN113911158B (en) | 2021-09-18 | 2021-09-18 | Primary suspension spring for built-in axle box body bogie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113911158A true CN113911158A (en) | 2022-01-11 |
| CN113911158B CN113911158B (en) | 2022-12-23 |
Family
ID=79235299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111098930.1A Active CN113911158B (en) | 2021-09-18 | 2021-09-18 | Primary suspension spring for built-in axle box body bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113911158B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154416A (en) * | 1919-10-28 | 1920-12-02 | Nils Aall Krag | Improvements in retaining means for points for tramways and the like |
| JP2009197986A (en) * | 2008-02-25 | 2009-09-03 | Bridgestone Corp | Air spring device |
| JP2010228630A (en) * | 2009-03-27 | 2010-10-14 | Railway Technical Res Inst | Truck of railway rolling stock |
| CN112046534A (en) * | 2020-09-25 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Primary suspension system of railway vehicle adopting composite plate spring |
| CN112644541A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Primary suspension device, bogie and rail vehicle |
-
2021
- 2021-09-18 CN CN202111098930.1A patent/CN113911158B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154416A (en) * | 1919-10-28 | 1920-12-02 | Nils Aall Krag | Improvements in retaining means for points for tramways and the like |
| JP2009197986A (en) * | 2008-02-25 | 2009-09-03 | Bridgestone Corp | Air spring device |
| JP2010228630A (en) * | 2009-03-27 | 2010-10-14 | Railway Technical Res Inst | Truck of railway rolling stock |
| CN112644541A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Primary suspension device, bogie and rail vehicle |
| CN112046534A (en) * | 2020-09-25 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Primary suspension system of railway vehicle adopting composite plate spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113911158B (en) | 2022-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2886376B1 (en) | Modular suspension system and components thereof | |
| CN106515335B (en) | A kind of RBA steel plate spring assembly and its automobile | |
| CN112519820A (en) | Bogie system of railway vehicle and railway vehicle | |
| CN110578768A (en) | Air spring and railway vehicle | |
| CN112519821A (en) | Bogie cabin for railway vehicle and bogie system | |
| CN114084189B (en) | Bogie with side beam fixing seat and railway vehicle | |
| CN114084186B (en) | Bogie and rail vehicle | |
| CN109910938B (en) | V-shaped rubber pile assembly and rigidity design method and application thereof | |
| CN111959550A (en) | Framework and bogie thereof | |
| CN112644542B (en) | Steering frame | |
| CN114084185B (en) | Bogie with safety stop and railway vehicle | |
| CN114084187B (en) | Double-deck curb girder bogie and rail vehicle | |
| CN113911158B (en) | Primary suspension spring for built-in axle box body bogie | |
| CN109094595B (en) | Railway wagon bogie vibration damping device capable of providing composite vibration damping force | |
| CN112644550B (en) | Steering frame | |
| CN114084188B (en) | Bogie with connecting seat and railway vehicle | |
| CN212959628U (en) | Variable cross-section plate spring assembly for passenger car | |
| CN214823273U (en) | Abrasion strip device | |
| CN202987188U (en) | Car coupler buffer | |
| CN114435052A (en) | Leaf spring suspension system and vehicle | |
| EP3636950B1 (en) | Method for increasing axial stiffness, reducing radial and deflection stiffness of elastic compounded component | |
| CN111319641B (en) | Railway freight vehicle and suspension floor device thereof | |
| CN111907547A (en) | Bogie and vehicle with same | |
| CN111497540A (en) | Composite plate spring suspension assembly device with two-stage rigidity | |
| CN217575202U (en) | Large-axle-weight multipurpose bogie and railway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |