Pipe bridge pipe special slippable support

Abstract

This utility model provides a sliding support specifically for pipe bridges, relating to the technical field of pipe bridge engineering support devices. It includes an embedded pad, a buffer device, and an arc-shaped pad. The embedded pad is placed on a concrete support; a buffer base is placed on the embedded pad, with baffles evenly distributed around its perimeter, connected to the buffer base by several buffer springs; the arc-shaped pad is placed below the pipe bridge, and the top of the buffer base has an arc-shaped top surface matching the arc-shaped pad. The arc-shaped pad and the pipe bridge are integrally placed on the arc-shaped top surface. This utility model effectively solves the technical problems of unstable friction, insufficient buffering capacity, and low displacement control accuracy of traditional supports.

Description

Technical Field

[0001] This utility model relates to the technical field of support devices for pipe bridge engineering, and specifically to a sliding support for pipe bridges. Background Technology

[0002] In pipe bridge engineering, bearings are key components that support pipelines and accommodate their displacement. Due to the long-term influence of complex conditions such as thermal expansion and contraction, mechanical vibration, wind loads, and foundation settlement, traditional fixed bearings are insufficient to meet the demands of multi-degree-of-freedom displacement. Ordinary sliding bearings still have significant drawbacks in practical applications: traditional sliding bearings often employ rigid contact or simple sliding structures, and the friction components are prone to wear debris during long-term sliding, especially under unlubricated conditions, leading to increased fluctuations in the friction coefficient, exacerbating contact surface damage, and reducing bearing life. Current bearings lack buffering capacity or have insufficient buffering performance, while also exhibiting low displacement control accuracy and a lack of effective limiting structures. Under severe vibration or seismic conditions, pipelines may experience excessive displacement or deflection, threatening the overall stability of the pipe bridge. Although some bearings are equipped with limiting devices, rigid contact easily induces impact loads, exacerbating structural fatigue.

[0003] Chinese patent document CN106245780B discloses a finite displacement buffer sliding support structure and assembly method. It discloses a technical solution that uses a double-groove nested structure with ball sliding and buffer springs, which can relieve temperature stress, control displacement rate and prevent damage from instantaneous large displacement. However, it still has the problems of complex structure, mainly for steel structure building applications, lack of design considerations for special working conditions of pipe bridge engineering, and limited adaptability to multi-degree-of-freedom displacement.

[0004] Chinese patent document CN208816965U discloses a pipeline protection device for water conservancy projects. It discloses a technical solution that adopts an arc-shaped support plate and a multi-layer protective cover structure, which achieves the technical effects of pipeline protection, buffer protection and adaptation to different pipe diameters. However, it still has the problems of focusing mainly on environmental protection functions rather than the mechanical performance of the structure, and lacking precise displacement control and buffering mechanisms. Utility Model Content

[0005] The purpose of this utility model is to provide a sliding support for pipe bridges and pipelines that is simple in structure, adaptable to multi-directional displacement, has good buffering effect, and good working stability.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A sliding support for pipe bridges and pipelines includes a pre-embedded pad, a buffer device, and an arc-shaped pad.

[0008] The embedded pad is set on the concrete support;

[0009] The buffer device includes a buffer base, baffles and buffer springs. The buffer base is placed on the pre-embedded pad. Baffles are evenly distributed around the buffer base. The baffles are connected to the buffer base through a number of buffer springs.

[0010] The arc-shaped pad is located below the pipe bridge pipe and is fixedly connected to the pipe bridge pipe. The top of the buffer base is provided with an arc-shaped top surface that matches the arc-shaped pad, and the arc-shaped pad and the pipe bridge pipe are integrally placed on the arc-shaped top surface.

[0011] Furthermore, the wing ends of the arc-shaped pad are fixed to the pipe bridge pipe by welding.

[0012] Furthermore: Each side of the buffer base has several blind holes, and the inner side of each baffle has the same number of transverse flanges as the blind holes. The transverse flanges extend into one end of the buffer spring, and the other end of the buffer spring abuts against the blind holes.

[0013] Furthermore: Each side of the buffer base has several blind holes, and the inner side of each baffle is provided with a transverse flange of the same number as the blind holes. The transverse flange extends into one end of the buffer spring, and the other end of the buffer spring abuts against the blind hole.

[0014] Furthermore, the contact surface between the bottom of the buffer base and the pre-embedded pad is coated with lubricant.

[0015] Furthermore, the bottom of the pre-embedded pad is provided with multiple anchor bars, which are embedded in the concrete support.

[0016] Furthermore, the contact surface between the arc-shaped top surface of the buffer base and the arc-shaped pad is coated with lubricant.

[0017] Furthermore, it also includes a limiting bracket, which includes a fixed angle steel and a connecting angle steel. One fixed angle steel is respectively provided on each side along the extension direction of the pipe bridge pipeline. Each fixed angle steel is fixedly connected to the concrete support, and the connecting angle steel is fixedly connected to the two fixed angle steels respectively.

[0018] Furthermore, the lower part of the connecting angle steel is provided with an arc surface that matches the pipe bridge pipe.

[0019] Furthermore, the wing ends of the arc-shaped pad are fixed to the pipe bridge pipe by heat fusion.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] I. This utility model adopts an integrated design of arc-shaped pad and pipeline. The wing end of the arc-shaped pad is welded or hot-melted to form an integral structure with the pipeline. Through the combination design of baffles and buffer springs evenly distributed around the perimeter, and the cooperation structure of transverse flange and blind hole, when the pipeline undergoes axial, radial or torsional displacement, the baffles and buffer springs in the corresponding directions can respond simultaneously and provide buffer damping, effectively absorbing the dynamic energy generated by displacement, and preventing mechanical interference problems that may be caused by multi-degree-of-freedom displacement coupling. Compared with the prior art, this utility model has a simpler structure, lower manufacturing and maintenance costs, and better working stability.

[0022] II. This utility model applies lubricant to the contact surfaces of the buffer base and the embedded pad, as well as the contact surfaces of the arc-shaped pad and the arc-shaped top surface. This effectively reduces the coefficient of sliding friction and maintains the stability of the friction components. The application of lubricant prevents the generation of wear debris during long-term sliding, avoids fluctuations in the coefficient of friction, significantly extends the service life of the support, and solves the technical problem of unstable friction performance in traditional sliding supports.

[0023] Third, the matching design of the arc-shaped pad and the arc-shaped top surface of this utility model transforms the vertical load transmitted by the pipeline into surface contact pressure, significantly reducing contact stress. The surface contact design avoids stress concentration caused by point or line contact, improving the bearing capacity and structural safety of the support; the limiting bracket forms a rigid frame through fixed angle steel and connecting angle steel, providing safety protection for the pipeline under extreme working conditions; the arc surface set below the connecting angle steel matches the shape of the pipeline, ensuring that surface contact is formed when the displacement limit is reached, avoiding impact loads from damaging the pipeline and support structure, and effectively solving the problem of impact loads and structural fatigue caused by the rigid limiting of traditional supports. Attached Figure Description

[0024] Figure 1 A three-dimensional schematic diagram of a sliding support for pipe bridges and pipelines provided by this utility model;

[0025] Figure 2 A schematic front sectional view of a sliding support for pipe bridges and pipelines provided by this utility model;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle;

[0027] Figure 4 A right-side view schematic diagram of a sliding support for pipe bridges and pipelines provided by this utility model;

[0028] In the picture:

[0029] 1. Cap beam; 2. Concrete support; 3. Sliding support; 4. Pipe bridge; 5. Limiting bracket; 6. Weld; 30. Arc-shaped pad; 31. Buffer device; 311. Buffer base; 3110. Blind hole; 312. Buffer spring; 313. Baffle; 3130. Transverse flange; 32. Embedded pad; 33. Anchor bar; 34. Fastener; 51. Connecting angle steel; 52. Fixing angle steel. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figure 1 As shown, this utility model provides a sliding support for pipe bridges. The sliding support 3 includes an embedded pad 32, a buffer device 31, and an arc-shaped pad 30. The embedded pad 32 is disposed on a concrete support 2, which is disposed on the cap beam 1 of the pipe bridge. The buffer device 31 includes a buffer base 311, a baffle 313, and a buffer spring 312. The buffer base 311 is placed on the embedded pad 32, and baffles 313 are evenly distributed around the buffer base 311. The baffles 313 are connected to the buffer base 311 by several buffer springs 312. The arc-shaped pad 30 is disposed below the pipe bridge 4 and is fixedly connected to the pipe bridge 4. The top of the buffer base 311 is provided with an arc-shaped top surface that matches the arc-shaped pad 30. The arc-shaped pad 30 and the pipe bridge 4 are integrally placed on the arc-shaped top surface.

[0033] Specifically, the embedded pad 32 is fixedly connected to the concrete support 2 through pre-embedding, providing a stable support foundation for the upper buffer device 31. The buffer base 311 is placed on the embedded pad 32, forming the intermediate force transmission layer of the support system. The baffle 313 structure evenly distributed around the buffer base 311 achieves multi-directional adaptation and buffer control of pipeline displacement through the elastic connection of the buffer spring 312. The arc-shaped pad 30 is directly fixedly connected to the pipeline 4 of the pipe bridge, and its arc-shaped structure matches the arc-shaped top surface of the buffer base 311, ensuring that the pipeline load can be evenly transmitted to the buffer device 31. When the pipeline is displaced under the action of thermal expansion and contraction, vibration or other external forces, relative sliding occurs between the arc-shaped pad 30 and the arc-shaped top surface. At the same time, the combined structure of the baffle 313 and the buffer spring 312 provides necessary buffer protection and displacement control, thereby effectively adapting to the multi-degree-of-freedom displacement requirements of the pipeline and preventing excessive displacement from damaging the pipe bridge structure.

[0034] In one specific embodiment of this utility model, the flanges of the arc-shaped pad 30 are fixed to the pipe bridge 4 by welding. The flanges of the arc-shaped pad 30 extend to both sides of the pipe bridge 4 and are fixedly connected to the outer wall of the pipe through welding. A weld 6 is formed at the weld between the flanges of the arc-shaped pad 30 and the pipe bridge 4. The welded connection ensures that the arc-shaped pad 30 and the pipe form an integrated structure, eliminating relative displacement and fretting wear at the connection point, and ensuring that the load is accurately transmitted to the support through the arc-shaped pad 30.

[0035] In one specific embodiment of this utility model, each side of the buffer base 311 has a plurality of blind holes 3110. The inner side of each baffle 313 has the same number of transverse flanges 3130 as the blind holes 3110. One end of the transverse flange 3130 extends into the buffer spring 312, and the other end of the buffer spring 312 abuts against the blind hole 3110. The blind holes 3110 are formed on the side wall of the buffer base 311, and the transverse flanges 3130 extend from the inner side of the baffle 313 toward the buffer base 311, forming a plug-in connection with one end of the buffer spring 312. The buffer spring 312 establishes an elastic force transmission path between the transverse flanges 3130 and the blind holes 3110. When the baffle 313 is subjected to external force, the spring undergoes compression or extension deformation, providing buffering damping and restoring force. The cooperation between the blind holes 3110 and the transverse flanges 3130 ensures that the buffer spring 312 maintains the correct force direction and deformation state during operation, achieving a stable and reliable buffering effect.

[0036] It should be noted that the combination of baffles 313 evenly distributed around the perimeter and buffer springs 312, along with the cooperation of transverse flanges 3130 and blind holes 3110, can simultaneously absorb axial sliding, radial rotation, and minor vibrations, avoiding mechanical interference caused by multi-degree-of-freedom displacement coupling. The preload of buffer springs 312 is adjustable through the structure of blind holes 3110, ensuring stable buffering performance even after long-term operation. The standardized matching structure of blind holes 3110 and transverse flanges 3130 simplifies the preload adjustment process of buffer springs 312 and improves construction efficiency.

[0037] It should be noted that the baffles 313 are all fixedly connected to the pre-embedded pads 32 by several fasteners 34, and the fasteners 34 are connected by nuts and bolts.

[0038] In one specific embodiment of this utility model, baffles 313 symmetrically arranged on both sides of the buffer base 311 along the extension direction of the pipe bridge 4 are designated as the first baffles, and baffles symmetrically arranged on both sides of the buffer base 311 perpendicular to the extension direction of the pipe bridge 4 are designated as the second baffles. The length of the second baffle is less than the length of the first baffle. The first baffle is arranged along the axial direction of the pipe and undertakes the function of controlling and buffering the longitudinal displacement of the pipe. The second baffle is arranged perpendicular to the axial direction of the pipe and mainly controls the lateral displacement of the pipe. Since the displacement characteristics and control requirements of the pipe in different directions are different, the second baffle adopts a shorter length design to specifically adapt to the thermal expansion and contraction displacement of the pipe in different directions. The first baffle is longer to adapt to large longitudinal displacement of the pipe; the second baffle is shorter to limit lateral displacement and reduce the risk of mechanical interference.

[0039] In one specific embodiment of this utility model, the contact surface between the bottom of the buffer base 311 and the embedded pad 32 is coated with lubricant. The lubricant forms a lubricating film between the bottom surface of the buffer base 311 and the upper surface of the embedded pad 32, significantly reducing the coefficient of friction between the two contact surfaces. When the pipeline shifts, causing the buffer base 311 to slide slightly on the embedded pad 32, the lubricant reduces frictional resistance, prevents wear and adhesion of the contact surfaces, and simultaneously forms a seal, effectively preventing sand and moisture from intruding into the sliding interface.

[0040] It should be noted that the special grease applied to the contact surfaces must possess good low-temperature (below -30℃) and high-temperature (60~80℃) performance, lubrication performance, and corrosion resistance. When other lubricating materials are used, their material performance requirements remain unchanged.

[0041] In one specific embodiment of this utility model, a plurality of anchor bars 33 are arranged at the bottom of the embedded pad 32, and the anchor bars 33 are embedded in the concrete support 2. The anchor bars 33 are made of steel reinforcement and are distributed at a certain spacing and arrangement at the bottom of the embedded pad 32. During the concrete pouring process, the anchor bars 33 are embedded inside the concrete support 2, and the embedded pad 32 and the concrete support 2 are connected into a whole through the bonding effect between the steel reinforcement and the concrete and the mechanical anchoring effect. The setting of the anchor bars 33 ensures that the embedded pad 32 can withstand and transmit various loads from the superstructure, including vertical pressure, horizontal shear force and overturning moment, enhance the pull-out resistance, and prevent the support from loosening due to long-term vibration.

[0042] In one specific embodiment of this utility model, the contact surface between the arc-shaped top surface of the buffer base 311 and the arc-shaped pad 30 is coated with lubricant. The arc-shaped top surface and the arc-shaped pad 30 are the main sliding interface of the support system, and the application of lubricant to this interface forms a stable lubrication layer. When the pipeline is displaced, the arc-shaped pad 30 slides on the arc-shaped top surface, and the lubricant can effectively reduce sliding friction and prevent wear and damage to the contact surface.

[0043] In one specific embodiment of this utility model, a limiting bracket 5 is also included. The limiting bracket 5 includes fixed angle steel 52 and connecting angle steel 51. One fixed angle steel 52 is respectively installed on each side perpendicular to the extension direction of the pipe bridge 4. Each fixed angle steel 52 is fixedly connected to the concrete support 2. The connecting angle steel 51 is fixedly connected to both fixed angle steel 52. The fixed angle steel 52 is made of corner steel, possessing sufficient strength and rigidity to withstand the limiting load. The bottom end of the fixed angle steel 52 is fixedly connected to the concrete support 2 via anchor bolts or embedded parts, ensuring that the limiting bracket 5 has a stable supporting foundation. The connecting angle steel 51 laterally connects the two fixed angle steels 52, forming a rigid frame structure to provide lateral limiting protection for the pipeline. When the pipeline displacement exceeds the design allowable range, the limiting bracket 5 can provide restraint force in a timely manner, preventing excessive slippage of the pipeline under earthquake or strong wind conditions.

[0044] In one specific embodiment of this utility model, the lower part of the connecting angle steel 51 is provided with an arc surface that matches the pipe bridge 4. The arc surface below the connecting angle steel 51 is machined according to the outer diameter and curvature of the pipe bridge 4, forming a geometric matching relationship with the outer surface of the pipe. The arc surface design ensures that when the pipe reaches the limiting bracket 5 during extreme displacement, surface contact rather than point or line contact can be formed, avoiding damage to the pipe caused by local stress concentration. The arc surface setting can also provide a smoother constraint force transmission during the limiting process, reducing the impact of impact loads.

[0045] In one specific embodiment of this utility model, the flange of the arc-shaped pad 30 is fixed to the pipe bridge 4 by heat fusion. For pipes of specific materials, especially plastic pipes or composite material pipes, heat fusion can achieve molecular-level connections. During the heat fusion process, the flange of the arc-shaped pad 30 melts at a controlled temperature with the pipe contact surface, and after cooling, a strong integrated connection is formed. The heat fusion connection has good sealing and durability, can withstand temperature changes and the effects of chemical media, ensures the connection strength between the arc-shaped pad 30 and the pipe, and meets the connection requirements of pipes of different materials.

[0046] It should be noted that in this utility model, the connection between the anchoring bar 33, the fixing angle steel 52 and the connecting angle steel 51 is all by welding, with a minimum weld height of 6mm and not less than the thickness of each connecting plate.

[0047] The working principle of this utility model is as follows:

[0048] When the pipes in the pipe bridge are subjected to gravity loads under normal operating conditions, the weight of the pipes is transferred to the arc-shaped top surface of the buffer base through the arc-shaped pad 30 integrally connected to it. The curved surface design of the arc-shaped pad matches the arc-shaped top surface, transforming point or line contact into surface contact, significantly reducing contact stress and achieving uniform load distribution. The load is further transferred to the embedded pad through the buffer base, and finally to the concrete support and the pipe bridge cap beam, completing the mechanical transfer of the entire load-bearing path.

[0049] When the pipeline experiences axial displacement due to thermal expansion and contraction, the arc-shaped pad moves along with the pipeline, sliding on the arc-shaped top surface of the buffer base. The lubricant applied to the contact surface effectively reduces sliding friction and prevents sticking. Simultaneously, the first baffles located on both sides of the pipeline's extension direction sense the displacement load through buffer springs. The springs undergo compressive deformation between the transverse flange and the blind hole, providing a buffer damping force proportional to the displacement. When the temperature returns to normal, the elastic restoring force of the buffer springs drives the baffles and arc-shaped pads back to their initial positions, achieving reversible displacement control.

[0050] When the pipeline is subjected to lateral loads or experiences radial displacement, the second baffle, perpendicular to the pipeline's extension direction, plays a key control role. Because the second baffle is shorter than the first baffle, it provides necessary lateral restraint while avoiding excessive restriction on displacement in other directions. Lateral displacement is transmitted to the buffer base via the arc-shaped pad, causing the corresponding buffer spring of the second baffle to deform, generating a lateral buffering damping force that effectively controls the magnitude of the pipeline's lateral displacement.

[0051] When the pipeline encounters sudden dynamic loads such as earthquakes or strong winds, the integrated arc-shaped pad responds synchronously to the dynamic excitation. The evenly distributed baffles and buffer springs combine to form a multi-degree-of-freedom buffer system, capable of simultaneously absorbing and dissipating dynamic energy in the axial, radial, and torsional directions. Under dynamic loads, the buffer springs undergo reciprocating deformation, converting dynamic energy into heat dissipation through the material's internal damping and structural damping, reducing the dynamic load transmitted to the pipe bridge structure.

[0052] Under extreme conditions, when the pipeline displacement exceeds the control range of the buffer device, the limit support plays a safety protection role. The pipeline contacts the arc surface below the connecting angle steel, bearing the ultimate load through surface contact, avoiding stress concentration and localized damage caused by point contact. The rigid connection between the fixed angle steel and the concrete support prevents excessive pipeline displacement or detachment from the support.

[0053] Throughout the entire operation, the reliable connection between the embedded pad and the concrete support, formed by the anchor bars, ensures the overall stability of the support system. The application of lubricant at each sliding interface maintains long-term stable sliding performance, reducing wear and maintenance requirements. The integrated connection between the arc-shaped pad and the pipeline eliminates the fretting wear and uneven load transfer problems that can occur with traditional supports where the pipeline is separated from the support.

[0054] By implementing the above working principle, this utility model effectively solves the technical problems of traditional sliding supports, such as large fluctuations in friction coefficient, insufficient buffering capacity, low displacement control accuracy, and poor adaptability to multiple degrees of freedom. The multi-directional displacement adaptive buffer device enables precise control of complex pipeline displacement conditions, the integrated design of the arc-shaped pad ensures the accuracy and reliability of load transfer, and the limit support system provides safety protection under extreme conditions. The overall technical solution significantly improves the working performance and service life of the pipe bridge support system.

[0055] This invention confines the sliding interface between the arc-shaped pad and the buffer base, preventing the pipe body from directly participating in sliding contact and limiting the wear range of the friction components to the surface of the replaceable buffer base. This design protects the pipe body from wear, and when wear occurs in the support components, only the buffer base needs to be replaced to restore the support performance, significantly reducing maintenance costs.

[0056] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sliding support specifically for pipe bridges and pipelines, characterized in that: This includes embedded pads, buffer devices, and curved pads; The embedded pad is set on the concrete support; The buffer device includes a buffer base, baffles and buffer springs. The buffer base is placed on the pre-embedded pad. Baffles are evenly distributed around the buffer base. The baffles are connected to the buffer base through a number of buffer springs. The arc-shaped pad is located below the pipe bridge pipe and is fixedly connected to the pipe bridge pipe. The top of the buffer base is provided with an arc-shaped top surface that matches the arc-shaped pad, and the arc-shaped pad and the pipe bridge pipe are integrally placed on the arc-shaped top surface.

2. The sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The wing ends of the arc-shaped pad are fixed to the pipe bridge pipe by welding.

3. The sliding support for pipe bridges and pipelines according to claim 1, characterized in that: Each side of the buffer base has several blind holes, and the inner side of each baffle has the same number of transverse flanges as the blind holes. The transverse flanges extend into one end of the buffer spring, and the other end of the buffer spring abuts against the blind holes.

4. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The baffles located on both sides of the buffer base along the extension direction of the pipe bridge are symmetrically arranged as the first baffles, and the baffles located on both sides of the buffer base perpendicular to the extension direction of the pipe bridge are symmetrically arranged as the second baffles. The length of the second baffle is less than the length of the first baffle.

5. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The contact surface between the bottom of the buffer base and the embedded pad is coated with lubricant.

6. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The bottom of the pre-embedded pad is provided with multiple anchor bars, which are embedded in the concrete support.

7. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The contact surface between the arc-shaped top surface of the buffer base and the arc-shaped pad is coated with lubricant.

8. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: It also includes a limiting bracket, which includes a fixed angle steel and a connecting angle steel. One fixed angle steel is provided on each side perpendicular to the extension direction of the pipe bridge. Each fixed angle steel is fixedly connected to the concrete support. The connecting angle steel is fixedly connected to the two fixed angle steels respectively.

9. A sliding support for pipe bridges and pipelines according to claim 8, characterized in that: The lower part of the connecting angle steel is provided with an arc surface that matches the pipe bridge pipe.

10. A sliding support for pipe bridges and pipelines according to claim 1, characterized in that: The wing ends of the arc-shaped pad are fixed to the pipe bridge pipe by heat fusion.

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