CN116292708A - Method for adjusting creep and instability effects of rubber pile products - Google Patents
Method for adjusting creep and instability effects of rubber pile products Download PDFInfo
- Publication number
- CN116292708A CN116292708A CN202310262147.7A CN202310262147A CN116292708A CN 116292708 A CN116292708 A CN 116292708A CN 202310262147 A CN202310262147 A CN 202310262147A CN 116292708 A CN116292708 A CN 116292708A
- Authority
- CN
- China
- Prior art keywords
- rubber
- rubber pile
- creep
- products
- pile products
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
- F16F3/10—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction
- F16F3/12—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction the steel spring being in contact with the rubber spring
Abstract
The invention relates to the technical field of vibration reduction products, in particular to a method for adjusting creep and instability effects of rubber pile products. The hollow direction is arranged in the axial direction of the rubber body, so that the free surface area of the rubber is increased. The elastic material and the rubber pile products are coaxially arranged or symmetrically arranged by taking the central axis of the rubber pile products as a reference. The creep amount of the elastic material is smaller than the rubber creep amount of the product; the air-direction and elastic material can adjust the rigidity characteristics of the product. According to the method, the situation of unstability of the rubber pile can be effectively reduced by arranging the air direction; according to the method, creep deformation of the product after long-time use can be effectively reduced by arranging the elastic material; the method of the invention adjusts the directional stiffness of the product by adjusting the air direction size, the elastic material size and the arrangement method.
Description
Technical Field
The invention relates to the technical field of vibration reduction products, in particular to a method for adjusting creep and instability effects of rubber pile products.
Background
The rubber pile type product is commonly applied to medium and large rail transit transportation devices, is convenient to design and manufacture due to simple structure, and is easy to control the cost and the price, thereby being favored by domestic and foreign manufacturers. Because of the structural characteristics, the two components can be separated by more than hundred times, and the two components are very easy to achieve higher vertical rigidity (bringing excellent bearing capacity) and lower horizontal rigidity (bringing good overstretching performance), and are extremely suitable for a secondary framework of a rail transit device. The vibration of the transportation device and the surrounding ground can be caused by the changes of the line trend, the smoothness and the gradient of the line surface, the abrasion of wheels and the like in the running process of the rail transportation device, especially in the high-speed running process. The vibration not only affects the smooth running of the transportation device, but also relates to the safety of the supporting body, and the vibration of the surrounding ground caused by the vibration also affects the surrounding environment.
In order to achieve the purpose of vibration reduction, the vibration reduction and noise reduction effects are generally achieved by designing a special structure and loading a traction buffer device and a walking suspension system.
After the rubber pile products are installed, the vertical direction can be always under loaded condition, and the more common dynamic working load can enable the rubber pile products to be vertically compressed to 10-50%, so that the common 'disease' -creep effect of the rubber vibration reduction products is often caused, and the vertical height of the products can be continuously reduced along with the application time. This situation is irreversible, and rail transit devices are extremely sensitive to altitude, either too high or too low, which can affect their safe operation. The height is often compensated for by post-installation of metal pads in engineering, but the maintenance costs are enormous.
The ratio of the maximum cross section outline dimension (length and width) of the cross section in the vertical direction to that of the rubber pile products is much larger than that of other rubber vibration reduction products, and the rubber pile products have larger vertical and horizontal displacement working conditions and are easy to be unstable. The product is in an S-shaped distortion state, the vertical rigidity of the product is reduced along with the increase of the vertical load, and the product is softer, loses the bearing capacity and seriously affects the transportation safety.
Through retrieval, CN2021105830530 discloses a vibration damper comprising a rubber body, a bottom plate arranged at the bottom of the rubber body and a top plate arranged at the top of the rubber body, wherein the rubber body is provided with a vibration damper hole which is formed along the axial lead and is vertically communicated, the vibration damper is arranged in the vibration damper hole, the upper end and the lower end of the vertical vibration damper are respectively arranged on the top plate and the bottom plate, when the vertical force applied to the rubber body changes, the distance between the top plate and the bottom plate of the rubber body changes, so that the vertical vibration damper stretches and contracts, and a piston in the vibration damper performs damping motion in a damping hydraulic cylinder to realize vertical energy absorption and vibration damping. According to the vertical vibration damper, the vertical vibration damper is arranged in the rubber pile, so that the rubber pile has stronger vertical damping characteristic; through setting up horizontal hydraulic vibration damper in the vibration damper periphery that contains the rubber heap of built-in vertical shock absorber, directly given the rubber heap along horizontal direction and vertical damping characteristic, solved traditional rubber heap because of the elastic rigidity is too big, the restoring force attenuation weakens, the poor problem of damping effect for train start, braking and the operation when passing through curve and the unsmooth road become more steady. However, the structure is provided with the vertical shock absorber in the shock absorption hole, and the structure is complex and is not easy to install and maintain. Moreover, the patent does not mention the creep and destabilization effects of the rubber product and has a related effect on this type of effect.
The method for adjusting the creep and instability effects of the rubber pile products is particularly important in practical production, but the scheme for solving the technical problem is not disclosed in the view of the current search situation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for adjusting creep deformation and instability effects of rubber pile products. According to the method, the rigidity of the rubber pile products in the vertical direction and the horizontal direction is adjusted by arranging the hollow elastic material and the embedded elastic material on the rubber pile products, wherein the hollow elastic material can reduce the rigidity of the products, and the elastic material can improve the rigidity of the products. The rigidity of the product can be freely adjusted within a certain range by flexibly setting the size of the air direction and the quantity and rigidity of the elastic materials; in addition, the creep amount of the pre-buried elastic material is smaller than that of the rubber pile products, and the creep amount of the rubber pile products is compensated by the elastic material. The free surface area of rubber is increased through the design of the air direction, so that the unstability of the rubber pile can be effectively reduced.
The invention is realized by the following technical scheme:
the creep and instability effect adjusting method of rubber pile products is characterized in that the vertical rigidity and the horizontal rigidity of the products are adjusted by arranging an empty elastic material and an embedded elastic material in a rubber body; the elastic material compensates the creep amount of rubber pile products; the air direction is arranged in the axial direction of the rubber body, and the size of the free surface area of the rubber is increased through the air direction arrangement, so that the instability of the rubber pile is reduced; the elastic material and the rubber pile products are coaxially arranged or symmetrically arranged by taking the central axis of the rubber pile products as a reference.
The elastic material of the invention is in a spiral column shape. The elastic material is a metal spring, and the two ends of the metal spring are connected with the two partition plates or are contacted with any two of the partition plates, the top plate and the bottom plate; the surface of the contact surface is coated with rubber adhesive, and the metal spring and the rubber pile form a whole through rubber vulcanization.
In practical applications, rubber pile products are subjected to vertical and horizontal loads, and the product is usually mounted with a platform and then is subjected to a carrier, so that a fixed preload exists vertically, and the load can exist until the product is dismounted. The creep deformation of the rubber pile products can occur after the rubber pile products are vertically loaded for a long time, the creep deformation can reduce the height of the products after installation, even the products cannot be used continuously when the creep deformation is large, the creep deformation of the elastic materials is smaller than that of the rubber pile products, the creep deformation of the rubber pile products can be compensated through the elastic materials, and the creep deformation of the products is effectively reduced. In addition, when the rubber pile bears a large load in the vertical direction or the horizontal direction in practical application, the horizontal direction of the rubber pile is unstable, so that the lateral movement (space overrun) of a product supported body in the horizontal direction is caused, and even rollover and derailment accidents occur. The free surface area of rubber is increased through the design of the air direction, so that the unstability of the rubber pile can be effectively reduced.
Further, the elastic material is provided with a positioning structure on the upper and lower sides or on one side to limit the position of the metal spring.
Further, the rubber pile product is single-layer or multi-layer, and the rubber profile edge of each layer is arranged concavely towards the central axis of the product.
Further, the spacing between the interlayer separators of the multi-layer rubber stack product can be adjusted, and the multi-layer rubber stack product can be made into structures with the same spacing and unequal spacing; the upper end face and the lower end face of the multilayer rubber pile product are provided with a top plate and a bottom plate for connecting external parts.
Further, the metal springs are multiple groups and are arranged on two sides of a central shaft of the rubber pile product.
Further, the center of the rubber pile product is provided with a hollow direction extending from the top plate to the bottom plate; the hollow direction is one of conical or cylindrical, and the radial cross section of the hollow direction is circular or regular polygonal (including star-shaped).
Further, the roof is the bending structure, and partly is the laminating portion of setting on the top of rubber body, and another part is the backstop portion that extends to bottom plate one end, backstop portion and bottom plate do not contact.
Further, the concave part of the rubber molded surface is formed by a plurality of sections of arcs, and the inner wall of the stop part is bent towards the inner side of the bottom plate.
Further, the upper end face and the lower end face of the single-layer rubber pile product are provided with a top plate and a bottom plate which are used for connecting external parts; the center of the bottom plate protrudes towards the top plate to form a mounting seat of the metal spring; the metal spring is coaxially arranged with the single-layer rubber pile.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a novel rigidity adjusting method for creep deformation and instability effects of rubber pile products, wherein the rigidity of the products in the vertical and horizontal directions is adjusted through the cooperation of air direction and elastic materials, and the rigidity and quantity of air direction and steel springs can influence the rigidity of the whole products.
The method for adjusting the creep deformation and the instability effect of the rubber pile products can effectively reduce the creep deformation of the rubber pile products. In practical application, the creep amount of the elastic material is smaller than that of the rubber pile products, and the creep amount of the rubber pile products is compensated by the elastic material.
The method for adjusting the creep and the destabilization effects of the rubber pile products can reduce the destabilization effects of the rubber pile, solve the problem that the existing rubber pile is unstable when bearing a large radial (horizontal) load after being axially (vertically) compressed, and effectively reduce the destabilization of the rubber pile by increasing the free surface area of the rubber through the arrangement of the air direction.
Drawings
FIG. 1 is a schematic diagram of a rubber pile product according to the prior art.
FIG. 2 is a schematic diagram of a structure of a single layer rubber stack product prepared by the method for adjusting creep and destabilization effects of the rubber stack product of the present invention.
FIG. 3 is a schematic diagram of the structure of a multi-layered rubber stack product made by the method for regulating creep and destabilization effects of the rubber stack product of the present invention.
Fig. 4 is a schematic diagram of a test structure of a rubber stack product pair package of the prior art and a rubber stack product pair package of the present invention.
The novel rubber sealing device comprises a 1-top plate, a 2-bottom plate, a 3-rubber body, a 4-hollow direction, a 5-elastic material, a 6-positioning structure, a 7-partition plate, an 8-attaching part and a 9-stopping part.
Detailed Description
For the purposes of illustrating and understanding the invention, the following words are first described in the meaning of the invention.
Example 1
As shown in fig. 1, in the conventional rubber pile product, a rubber body 3 is vulcanized between a top plate 1 and a bottom plate 2, no other arrangement is arranged in the rubber, and the center of the whole rubber body 3 is arranged in a non-hollow direction. As shown in fig. 2 to 4, the rubber pile product in this embodiment is adjusted by the structural design method of the present invention. The vertical rigidity and the horizontal rigidity of the product are regulated by arranging a hollow direction 4 and an installation elastic material 5 in the rubber body 3; the hollow direction 4 is arranged in the vertical direction of the rubber body 3, the elastic material 5 is symmetrically arranged by taking the central axis of the rubber pile product as a reference, and the deformation direction is the same as the direction of the rubber body 2 bearing the load so as to compensate the creep amount of the rubber pile product.
Specifically, the rubber stack product in the present embodiment may have a single-layer structure and a multi-layer structure. Taking the single-layer structure of fig. 2 as an example, the elastic material 5 of the single-layer rubber stack product is a metal spring, the metal spring is clamped by the top plate 1 and the bottom plate 2 arranged at two ends of the rubber body, the surface of the metal spring is coated with a rubber adhesive, and the metal spring is arranged between the top plate 1 and the bottom plate 2 and forms a whole with the rubber stack through rubber vulcanization.
A positioning structure 6 is oppositely arranged between the top plate 1 and the bottom plate 2 to define the position of the metal spring. The central shaft in the single-layer structure is axially provided with a hollow direction 4, and the hollow direction 4 extends from the top plate 1 to the bottom plate 2; the hollow direction 4 is one of conical or cylindrical, and the radial cross section of the hollow direction 4 is circular or regular polygonal (including star-shaped); the hollow direction in this embodiment is the toper structure, is convenient for provide more free spaces for rubber deformation when whole rubber pile class product uses, and the setting of cooperation metal spring can effectively adjust the rigidity of product. If the number of the empty directions 4 is 1, sleeving the metal spring on the circumference of the empty directions 4; at the moment, a groove position for installing a metal spring is arranged at the outer edge of the air direction 4; the top plate 1 in the embodiment is provided with a circular groove for the top of the metal spring to be clamped in; the center of the bottom plate 2 is concave, namely, the center of the bottom plate 2 is convex towards the direction of the top plate 1, so as to form a mounting seat of the metal spring.
The top plate 1 has a bent structure, and one part is a bonding part 8 provided at the top end of the rubber body 3, and the other part is a stopper part 9 extending toward one end of the bottom plate 2, and the stopper part 9 is not in contact with the bottom plate 2. The rubber body 3 is not only effectively fixed to this kind of setting to when rubber heap class product received vertical direction pressure, at first rubber warp, when warping to a certain extent, backstop portion 9 can contact bottom plate 2, and the atress is mostly born by bottom plate 2 this moment, and this contact is rigid contact, can effectively protect the life of rubber body 3.
The concave part of the rubber surface of the rubber body 3 is formed by a plurality of sections of arcs, and the inner wall of the stop part 9 is bent towards the inner side of the bottom plate.
As shown in fig. 3, the upper end face and the lower end face of the multi-layer rubber pile product are provided with a top plate 1 and a bottom plate 2 for connecting external parts; the layers are separated by equally-spaced partition plates 7; the metal springs are multiple groups and are respectively arranged at two sides of the central shaft of the rubber pile product. The rigidity of the product in the vertical direction and the horizontal direction is regulated through the air direction and the metal springs, and the rigidity of the whole product can be influenced by the size of the air direction and the number and the rigidity of the metal springs. In practical application, the creep amount of the metal spring is smaller than that of the rubber pile product, and the creep amount of the rubber pile product is compensated by the metal spring. The rubber pile is unstable when bearing a large radial load after axial compression, and the size of the free surface area of the rubber is increased after the design in the air direction, so that the instability of the rubber pile can be effectively reduced.
The test comparison and verification are carried out on the existing rubber pile products and the rubber pile products of the invention:
based on the single-layer rubber pile product structure of fig. 1 and 2, the specific verification test conditions are as follows:
as can be seen from the above test, the creep amount of the rubber pile product after embedding the metal spring is smaller than that of the pure rubber product, and it can be demonstrated that the creep amount of the rubber pile product can be compensated by the metal spring.
As shown in fig. 4, 4 products of fig. 1 and 2 were assembled together, one side of the end plate was fixed, and the other side of the end plate was vertically loaded with 23mm and 26mm, respectively, while being held for 1min, and the displacement amount of the separator in the horizontal direction was measured.
The test shows that the displacement (offset) of the product in the horizontal direction is greatly reduced after the arrangement of the empty direction, which indicates that the arrangement of the empty direction can effectively reduce the instability of the rubber pile.
According to the invention, the performance of the product is regulated by arranging the hollow elastic material and the embedded elastic material in the rubber body. The hollow direction is arranged in the axial direction of the rubber body, so that the free surface area of the rubber is increased. The elastic material and the rubber pile products are coaxially arranged or symmetrically arranged by taking the central axis of the rubber pile products as a reference. The creep amount of the elastic material is smaller than the rubber creep amount of the product; the air-direction and elastic material can adjust the rigidity characteristics of the product. According to the method, the situation of unstability of the rubber pile can be effectively reduced by arranging the air direction; according to the method, creep deformation of the product after long-time use can be effectively reduced by arranging the elastic material; the method of the invention adjusts the directional stiffness of the product by adjusting the air direction size, the elastic material size and the arrangement method.
The rubber pile product obtained by the novel rigidity adjusting method, namely the rigidity of the product in the vertical direction and the horizontal direction is adjusted by matching the air direction and the elastic material, has a simple structure, is convenient to maintain, and is easy to popularize and use.
The above embodiments are only for illustrating the present invention, not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, so that all equivalent technical solutions shall fall within the scope of the present invention, which is defined by the claims.
Claims (10)
1. The method for adjusting creep and instability effects of rubber pile products is characterized in that the vertical rigidity and the horizontal rigidity of the products are adjusted by arranging hollow elastic materials and pre-embedded elastic materials in a rubber body; the elastic material compensates the creep amount of rubber pile products; the air direction is arranged in the axial direction of the rubber body, and the size of the free surface area of the rubber is increased through the air direction arrangement, so that the instability of the rubber pile is reduced; the elastic material and the rubber pile products are coaxially arranged or symmetrically arranged by taking the central axis of the rubber pile products as a reference.
2. The method for adjusting creep and instability effects of rubber pile products according to claim 1, wherein the elastic material is a metal spring, and two ends of the metal spring are connected with two partition plates or are in contact with any two of the partition plates, the top plate and the bottom plate; the surface of the contact surface is coated with rubber adhesive, and the metal spring and the rubber pile form a whole through rubber vulcanization.
3. The method of claim 2, wherein the elastic material is provided with a positioning structure on the upper and lower sides or on one side to define the position of the metal spring.
4. The method of claim 1, wherein the rubber stack product is a single layer or multiple layers, and the rubber profile edge of each layer is arranged concave toward the central axis of the product.
5. The method for adjusting creep and instability effects of rubber pile products according to claim 4, wherein the upper and lower end surfaces of the multi-layered rubber pile products are provided with top and bottom plates for connecting external parts.
6. The method for adjusting creep and instability effects of rubber pile products according to claim 5, wherein the metal springs are arranged in multiple groups and are arranged on two sides of a central axis of the rubber pile products.
7. The method for adjusting creep and instability effects of rubber pile products according to claim 6, wherein the center of the rubber pile products is provided with a hollow direction extending from the top plate to the bottom plate; the hollow direction is one of conical or cylindrical, and the radial cross section of the hollow direction is circular or regular polygonal.
8. The method of claim 7, wherein the top plate has a bent structure, one part is a fitting part arranged at the top end of the rubber body, the other part is a stop part extending to one end of the bottom plate, and the stop part is not in contact with the bottom plate.
9. The method for adjusting creep and instability effects of rubber pile products according to claim 8, wherein the concave of the rubber molded surface is formed by a plurality of sections of arcs, and the inner wall of the stop part is bent towards the inner side of the bottom plate.
10. The method for adjusting creep and instability effects of rubber pile products according to claim 4, wherein top plates and bottom plates are arranged on the end surfaces of the upper end and the lower end of the single-layer rubber pile products for connecting external parts; the center of the bottom plate protrudes towards the top plate to form a mounting seat of the metal spring; the metal spring is coaxially arranged with the single-layer rubber pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310262147.7A CN116292708A (en) | 2023-03-17 | 2023-03-17 | Method for adjusting creep and instability effects of rubber pile products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310262147.7A CN116292708A (en) | 2023-03-17 | 2023-03-17 | Method for adjusting creep and instability effects of rubber pile products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116292708A true CN116292708A (en) | 2023-06-23 |
Family
ID=86818266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310262147.7A Pending CN116292708A (en) | 2023-03-17 | 2023-03-17 | Method for adjusting creep and instability effects of rubber pile products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116292708A (en) |
-
2023
- 2023-03-17 CN CN202310262147.7A patent/CN116292708A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1726505B1 (en) | Air spring | |
| AU2010353130B2 (en) | Full side bearing bearing-type railway truck bogie | |
| WO2016173390A1 (en) | Combined spring compensation suspension device | |
| CN1201099C (en) | Suspension strut with damping | |
| CN101520076B (en) | Rigidity-changing elastic element and rigidity-changing method thereof | |
| US20110031662A1 (en) | Air spring device | |
| US4109934A (en) | Self-contained frictionally damped resilient suspension system | |
| US9933036B2 (en) | Damping rubber spring for an automobile suspension | |
| US20090200718A1 (en) | Spring Shock Absorber for a Motor Vehicle | |
| US4150627A (en) | Self-contained frictionally damped resilient suspension system for railcars | |
| CN112343959A (en) | Method for improving transverse stability of air spring and air spring | |
| CN110285173A (en) | A kind of method and structure of volute spring stiffness tuning | |
| CN101797926A (en) | Bogie | |
| WO2019015604A1 (en) | Dual-spring damper assembly | |
| US8561546B2 (en) | Bogie | |
| RU2348556C1 (en) | Railway shock-absorbing device | |
| CN109094595B (en) | Railway wagon bogie vibration damping device capable of providing composite vibration damping force | |
| CN114001117B (en) | Combined rubber joint for improving transverse stability of air spring | |
| CN208559368U (en) | A kind of locomotive rubber metal pad improving anti-fatigue performance | |
| US20130069293A1 (en) | Suspension device | |
| CN116292708A (en) | Method for adjusting creep and instability effects of rubber pile products | |
| AU2010353129A1 (en) | Empty-weight two-stage frictional lower side bearing for use in railway freight car bogie | |
| CA1202988A (en) | Wheel suspension with eccentric shear disc | |
| CN113294482B (en) | Vibration damper of rubber pile containing built-in vertical shock absorber | |
| CN209414495U (en) | A kind of air spring vibration damper assembly with lateral force buffer function |
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 |