A compression tooling
By continuously pressing the elastic gasket with a clamping fixture, the problem of weak adhesion between the elastic gasket and the limiting groove is solved, achieving better vibration reduction and lower maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, the elastic gasket is not firmly bonded to the limiting groove, which leads to a decrease in vibration reduction function, an increase in vibration amplitude and noise, and is also prone to track slab drift and increased maintenance costs.
A pressure-fixing fixture is used to continuously apply pressure to the gasket that is pasted into the limiting groove through the pressure-retaining component, ensuring that the gasket is tightly pasted into the limiting groove and improving the bonding strength.
It improves the bonding strength of the gasket, extends its service life, reduces maintenance costs, and better absorbs and dissipates impact loads and vibrations during train operation, ensuring smooth train operation.
Smart Images
Figure CN224351036U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of railway construction technology, and in particular to a clamping tool. Background Technology
[0002] Ballastless track is a track structure that uses a monolithic foundation of concrete, asphalt mixture, or similar materials to replace the traditional crushed stone track bed. Examples include CRTS (China Railway Track System) Type III ballastless track, which is widely used in high-speed railways, urban rail transit, and special lines requiring high stability. The base plate is a crucial component of the ballastless track structure, located between the base bed and the track slab, serving to support, transmit force, and adjust the track height.
[0003] A limiting groove is provided on the base plate. The self-compacting concrete boss of the track slab cooperates with the limiting groove on the base plate to prevent the track slab from shifting. Elastic gaskets are attached to the side walls of the limiting groove. The self-compacting concrete boss contacts the elastic gaskets to absorb and dissipate the impact loads and vibrations generated by train operation, reduce structural noise, and extend the service life of the track slab and base plate.
[0004] When attaching elastic gaskets to the limiting groove, the gaskets are usually pressed manually against the side wall of the groove, and then the adhesive is allowed to cure. However, this manual pressing method can easily result in the elastic gaskets not adhering firmly to the limiting groove, which significantly reduces the vibration damping function and causes a substantial increase in vibration amplitude and noise. Utility Model Content
[0005] This application provides a clamping fixture that can continuously apply pressure to the gasket after it is pasted into the limiting groove, so that the gasket is pasted more tightly into the limiting groove, thereby improving the bonding strength of the gasket and ensuring the vibration reduction function.
[0006] To achieve the above objectives, this application adopts the following technical solution:
[0007] A clamping fixture, comprising:
[0008] The pressing assembly includes multiple pressing members distributed circumferentially along the limiting groove of the base plate;
[0009] Support components are provided in multiple forms;
[0010] The operating component and the support component are located on one side of the pressing component. The pressing component is connected to the operating component through the corresponding support component. One end of the support component is rotatably connected to the operating component, and the other end of the support component is rotatably connected to the pressing component.
[0011] When the operating component moves toward the pressing component, multiple pressing components move away from each other under the pushing action of their respective supporting components, so as to press against the gasket set on the side wall of the limiting groove.
[0012] Optionally, the clamping fixture also includes multiple insertion rods. Guide grooves are provided at both ends of the pressing members. The insertion rods are located between adjacent pressing members. One end of the insertion rod is inserted into the guide groove of one of the pressing members, and the other end of the insertion rod is inserted into the guide groove of another pressing member.
[0013] Optionally, the pressing member has a first pressing part, a second pressing part, and a bending part. The first pressing part is connected to the second pressing part through the bending part. One end of the support member is rotatably connected to the operating member, and the other end of the support member is rotatably connected to the bending part.
[0014] Optionally, the pressing member also has a reinforcing connection, which is connected to the first pressing part and the second pressing part respectively.
[0015] Optionally, reinforcing connecting portions are provided on both sides of the first and second pressing portions along the height direction of the pressing member.
[0016] Optionally, both the first pressing part and the second pressing part are pressing plates.
[0017] Optionally, the operating element is located at the center of the pressure assembly.
[0018] Optionally, the operating member is provided with a first rotating shaft, and the pressing member is provided with a second rotating shaft. The first rotating shaft and the second rotating shaft are parallel. One end of the support member rotates around the first rotating shaft, and the other end of the support member rotates around the second rotating shaft.
[0019] Optionally, the operating component includes a base and a handle, with a gripping space between the handle and the base, and one end of the support is rotatably connected to the base.
[0020] Optionally, the clamping fixture is made of metal.
[0021] As can be seen from the above technical solution, this application has at least the following beneficial effects:
[0022] In this application, after the gasket is pasted into the limiting groove, the pressing component of the clamping fixture continuously applies pressure to the gasket, thereby making the gasket and the limiting groove more tightly bonded, improving the bonding strength of the gasket, extending the service life of the gasket, and reducing maintenance costs. During train operation, it is beneficial to better absorb and dissipate the impact load and vibration generated by the train operation, ensuring the smooth operation of the train. The two ends of the support are rotatably connected to the operating component and the pressing component, respectively. The operating component can drive multiple pressing components to expand outward or retract inward. The outer dimensions of the pressing component are adjustable to adapt to limiting grooves of different sizes, thus having a wide range of applications.
[0023] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description
[0024] Figure 1 A schematic diagram of the clamping fixture provided in this application in a specific embodiment;
[0025] Figure 2 for Figure 1 Top view.
[0026] Reference numerals: 1-Pressure assembly; 11-Pressure component; 111-First pressure part; 112-Second pressure part; 113-Bending part; 114-Reinforcing connection part; 2-Support component; 3-Operating component; 31-Base; 32-Handle; 4-Connecting rod; 51-First rotating shaft; 52-Second rotating shaft. Detailed Implementation
[0027] The terms "first," "second," and "third," etc., used in this application specification and accompanying drawings are used to distinguish different objects, not to limit a specific order.
[0028] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0029] To ensure clarity and conciseness in the description of the following embodiments, a brief introduction to the related technologies is given first:
[0030] Ballastless track is a track structure that uses a monolithic foundation of concrete, asphalt mixture, etc., instead of the traditional crushed stone track bed. Ballastless track includes a base bed, a base slab, and a track slab. The base slab has limit grooves, and the self-compacting concrete bosses of the track slab engage with these limit grooves to prevent track slab displacement. Elastic gaskets are attached to the sidewalls of the limit grooves, and the self-compacting concrete bosses contact these gaskets to absorb and dissipate impact loads and vibrations generated by train operation, reducing structural noise and extending the service life of the track slab and base slab.
[0031] When attaching elastic gaskets to the limiting groove, the gaskets are usually pressed manually against the side wall of the groove, and then the adhesive is allowed to cure. However, this manual pressing method can easily result in the elastic gaskets not adhering firmly to the limiting groove, which significantly reduces the vibration damping function and causes a substantial increase in vibration amplitude and noise.
[0032] If the elastic gasket is not installed properly, its vibration damping function will be greatly reduced. The hard contact between the self-compacting concrete boss and the base plate will cause concrete peeling or local damage. At the same time, failure of the "concave-convex limit" structure can easily cause the track slab to drift under longitudinal and transverse loads. Once the unevenness of the track surface exceeds the specification limit of 7 mm, it will affect the stability of train operation and increase the risk of derailment. If the elastic gasket is not tightly attached to the limit groove, it may be filled with concrete or mortar, which will damage the elastic buffer layer, increase the difficulty of maintenance, greatly increase maintenance costs, and shorten the overall service life of the track.
[0033] In view of this, this application provides a clamping fixture. After the gasket is pasted into the limiting groove, the clamping fixture uses the pressing part to continuously apply pressure to the gasket, thereby making the gasket and the limiting groove more tightly pasted, improving the bonding strength of the gasket, extending the service life of the gasket, reducing maintenance costs, and during train operation, it is beneficial to better absorb and dissipate the impact load and vibration generated by the train operation, ensuring the smooth operation of the train.
[0034] The following is a description of this type of clamping tooling with reference to the accompanying drawings:
[0035] like Figures 1-2 As shown, the clamping fixture includes a pressing component 1, a support component 2, and an operating component 3. The pressing component 1 includes multiple pressing components 11 distributed circumferentially along the limiting groove of the base plate; multiple support components 2 are provided; the operating component 3 and the support component 2 are located on one side of the pressing component 1. The pressing component 11 is connected to the operating component 3 through the corresponding support component 2. One end of the support component 2 is rotatably connected to the operating component 3, and the other end of the support component 2 is rotatably connected to the pressing component 11.
[0036] When the operating member 3 moves toward the pressing component 1, the multiple pressing members 11 move away from each other under the pushing action of their respective supporting members 2, so as to press against the gaskets set on the side wall of the limiting groove.
[0037] The pressing component 1 is adapted to the forming of the limiting groove. For example, if the limiting groove is a cuboid, the pressing component 1 is also a cuboid structure.
[0038] Gaskets can be made of EPDM rubber (Ethylene Propylene Diene Methylene), which has excellent aging resistance, good corrosion resistance, and good elasticity.
[0039] During construction, after the concrete is poured to form the base plate, the gasket can only be pasted after the concrete strength reaches 75% of the design value. Before pasting, thoroughly clean the inner surface of the upper limit groove of the base plate, keeping it dry, flat, and free of loose particles. When pasting, ensure that the gasket is fully in contact with the concrete around the limit groove, without bubbling or partial detachment, and immediately seal it tightly with weather-resistant tape or cement-based sealant to prevent the self-compacting concrete boss from seeping into the space that has lost its elasticity during pouring.
[0040] After the gasket is manually attached to the limiting groove, a clamping fixture is used to press the gasket against it. Specifically, the clamping fixture is placed in the limiting groove, and a force is applied to the operating member 3, causing the operating member 3 to move towards the pressing component 1. Figure 1 In direction A, the support member 2 rotates, and the multiple support members 2 push the multiple pressing members 11 away from each other, so that the pressing assembly 1 is pushed outward. The multiple pressing members 11 continuously press against the gasket on the side wall of the limiting groove along the circumference of the limiting groove. After the pressing time reaches the preset time, a force is applied to the operating member 3, so that the operating member 3 moves away from the pressing assembly 1. (Refer to...) Figure 1 In the B direction, the support member 2 is rotated, and the multiple support members 2 pull the multiple pressing members 11 closer to each other, so that the pressing assembly 1 retracts inward, the pressing member 11 separates from the gasket, and the clamping fixture is removed from the limiting groove.
[0041] In this embodiment, after the gasket is pasted into the limiting groove, the pressing part 11 of the clamping fixture continuously applies pressure to the gasket, thereby making the gasket and the limiting groove more tightly bonded, improving the bonding strength of the gasket, extending the service life of the gasket, and reducing maintenance costs. During train operation, it is beneficial to better absorb and dissipate the impact load and vibration generated by the train operation, ensuring the smooth operation of the train. The two ends of the support 2 are rotatably connected to the operating part 3 and the pressing part 11, respectively. The operating part 3 can drive multiple pressing parts 11 to expand outward or retract inward. The outer dimensions of the pressing assembly 1 are adjustable to adapt to limiting grooves of different sizes, with a wide range of applications.
[0042] Specifically, the clamping fixture also includes multiple insertion rods 4. Guide grooves are provided at both ends of the pressing member 11. The insertion rods 4 are located between adjacent pressing members 11. One end of the insertion rod 4 is inserted into the guide groove of one of the pressing members 11, and the other end of the insertion rod 4 is inserted into the guide groove of another pressing member 11.
[0043] A connecting rod 4 is provided between adjacent pressing members 11, which improves the overall integrity of the pressing assembly 1; as adjacent pressing members 11 move away from or closer to each other, the guide groove of the pressing member 11 slides with the connecting rod 4, which improves the movement stability of the pressing member 11.
[0044] In one specific embodiment, such as Figure 1 As shown, the pressing member 11 has a first pressing part 111, a second pressing part 112 and a bending part 113. The first pressing part 111 is connected to the second pressing part 112 through the bending part 113. One end of the support member 2 is rotatably connected to the operating member 3, and the other end of the support member 2 is rotatably connected to the bending part 113.
[0045] The first pressing part 111 and the second pressing part 112 are used to press the gaskets at different positions in the limiting groove.
[0046] Specifically, both the first pressing part 111 and the second pressing part 112 are pressing plates. The pressing plate has a large contact area with the gasket, which can apply uniform pressing force to the gasket.
[0047] In order to improve the structural strength of the pressing member 11, the pressing member 11 also has a reinforcing connection 114, which is connected to the first pressing member 111 and the second pressing member 112 respectively.
[0048] As shown in the figure, along the height direction of the pressing member 11, the first pressing part 111 and the second pressing part 112 are respectively provided with reinforcing connecting parts 114 to further improve the structural strength of the pressing member 11.
[0049] The reinforcing connection 114 may be a connecting plate.
[0050] In one specific embodiment, the operating element 3 is located at the center of the pressing component 1.
[0051] As shown in the figure, the pressing component 1 is a cuboid structure with four pressing parts 11. The operating part 3 is located at the center of the pressing component 1, and the four pressing parts 11 are connected to the operating part 3 through corresponding support parts 2.
[0052] Since the operating component 3 is located at the center of the pressing component 1, the transmission distance from the operating component 3 to each pressing component 11 is equal, the force transmission path is balanced, and the displacement and force of each pressing component 11 are equal, avoiding excessive or insufficient local pressure due to eccentric drive; the same size support component 2 can be used, that is, standardized support component 2 can be used, reducing the difficulty of processing and assembly.
[0053] Specifically, the operating member 3 is provided with a first rotating shaft 51, and the pressing member 11 is provided with a second rotating shaft 52. The first rotating shaft 51 and the second rotating shaft 52 are parallel. One end of the support member 2 rotates around the first rotating shaft 51, and the other end of the support member 2 rotates around the second rotating shaft 52.
[0054] Since the first rotating shaft 51 and the second rotating shaft 52 corresponding to all the support members 2 are kept parallel, the axial displacement of the operating member 3 can be synchronously converted into the radial movement of each pressing member 11, ensuring that the circumferentially distributed pressing members 11 synchronously press against the pad.
[0055] In one specific embodiment, such as Figure 1 As shown, the operating member 3 includes a base 31 and a handle 32. There is a gripping space between the handle 32 and the base 31. One end of the support member 2 is rotatably connected to the base 31.
[0056] When in use, construction workers apply the corresponding force by gripping the handle 32, which facilitates operation.
[0057] In one specific embodiment, the clamping fixture is made of metal.
[0058] Metal clamping fixtures are easy to ensure structural strength, are wear-resistant and corrosion-resistant, which helps to extend their service life.
[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application.
Claims
1. A clamping fixture, characterized in that, include: A pressing assembly, the pressing assembly comprising a plurality of pressing members distributed circumferentially along the limiting groove of the base plate; Support components are provided in multiple forms; An operating component and a support component are located on one side of the pressing assembly. The pressing component is connected to the operating component via a corresponding support component. One end of the support component is rotatably connected to the operating component, and the other end of the support component is rotatably connected to the pressing component. When the operating member moves toward the pressing component, the multiple pressing members move away from each other under the pushing action of their respective supporting members, so as to press against the gasket disposed on the side wall of the limiting groove.
2. The clamping fixture according to claim 1, characterized in that, The clamping fixture also includes multiple insertion rods. Each end of the pressing member is provided with a guide groove. The insertion rod is located between adjacent pressing members. One end of the insertion rod is inserted into the guide groove of one of the pressing members, and the other end of the insertion rod is inserted into the guide groove of another pressing member.
3. The clamping fixture according to claim 1, characterized in that, The pressing member has a first pressing part, a second pressing part, and a bending part. The first pressing part is connected to the second pressing part through the bending part. One end of the support member is rotatably connected to the operating member, and the other end of the support member is rotatably connected to the bending part.
4. The clamping fixture according to claim 3, characterized in that, The pressing member also has a reinforcing connection portion, which is connected to the first pressing portion and the second pressing portion respectively.
5. The clamping fixture according to claim 4, characterized in that, Along the height direction of the pressing member, the reinforcing connecting parts are respectively provided on both sides of the first pressing part and the second pressing part.
6. The clamping fixture according to claim 3, characterized in that, Both the first pressing part and the second pressing part are pressing plates.
7. The clamping fixture according to claim 1, characterized in that, The operating element is located at the center of the pressure assembly.
8. The clamping fixture according to claim 1, characterized in that, The operating component is provided with a first rotating shaft, and the pressing component is provided with a second rotating shaft. The first rotating shaft and the second rotating shaft are parallel. One end of the support component rotates around the first rotating shaft, and the other end of the support component rotates around the second rotating shaft.
9. The clamping fixture according to claim 1, characterized in that, The operating component includes a base and a handle, with a gripping space between the handle and the base, and one end of the support is rotatably connected to the base.
10. The clamping fixture according to claim 1, characterized in that, The clamping fixture is made of metal.