Downward sliding type pipe bracket with small eccentricity and low friction coefficient

Abstract

The utility model discloses a downward sliding type pipe bracket which is small in eccentricity and low in friction coefficient. Comprising a pipe bracket main body, a mirror stainless steel upper sliding plate, limiting angle steel, a positioning plate and a plurality of polytetrafluoroethylene lower sliding plates, the positioning plate is fixed on the top surface of the bracket cross beam, and the polytetrafluoroethylene lower sliding plate is arranged on the upper surface of the positioning plate; the mirror surface stainless steel upper sliding plate is fixed at the bottom of the pipe bracket main body; the pipe bracket main body is arranged on the positioning plate through the mirror surface stainless steel upper sliding plate and the polytetrafluoroethylene lower sliding plate, and the mirror surface stainless steel upper sliding plate and the polytetrafluoroethylene lower sliding plate form a sliding friction pair. The mirror surface stainless steel upper sliding plate and the polytetrafluoroethylene lower sliding plate are arranged between the pipe bracket main body and the bracket cross beam to form a sliding friction pair, the friction coefficient is about 0.1, the friction force between the pipe bracket and the bracket cross beam can be effectively reduced, and the vertical eccentric load on the bracket cross beam after the displacement of the pipe bracket can also be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe system supports and relates to a sliding pipe support, in particular to a sliding pipe support with small eccentricity and low friction coefficient. Background Art

[0002] During the installation of industrial pipelines, pipe supports are installed between the pipeline and the pipe support to support the pipeline. Pipe supports are divided into fixed supports and sliding supports. In fixed supports, the pipeline is welded to the pipe support, and the pipe support is also welded to the support. Industrial pipelines are often laid outdoors, and temperature fluctuations can cause axial deformation of the pipeline, resulting in relative displacement between the pipeline and the support. Sliding supports can compensate for displacement caused by temperature changes. There are two main ways to achieve relative displacement: one is to weld the pipe support to the support, and the pipe slides between the pipe support and the support; this type of pipe support is called an upward sliding pipe support; the other is to weld the pipe to the pipe support and the pipe slides between the pipe support and the support; this type of pipe support is called a downward sliding pipe support. The downward sliding pipe support can prevent pipe wear and is widely used.

[0003] Sliding pipe supports are typically mounted directly on the support beam. The support beam bears the vertical load from the pipe, and is a bending member. Conventional sliding pipe supports subject the support beam to horizontal forces and torque. The support beam typically has an H-shaped cross-section, which has weak torsional and weak-axis bending resistance. The horizontal force acting on the support beam is primarily caused by the horizontal friction between the pipe support and the support beam. Before sliding, the sliding pipe support must overcome this friction. The steel-to-steel friction coefficient is approximately 0.3. If the pipeline is heavy, the horizontal force exerted on the support beam due to friction can be significant. The torque exerted on the support beam is mainly caused by the eccentricity of the vertical load on the support beam after the pipe support is displaced. The sliding pipe support usually needs to limit the lateral displacement. The current conventional practice is to widen the upper flange of the support beam and set a limit plate on the outside of the upper flange of the beam according to the limit amount. The pipe support slides in the sliding space formed by the upper flange of the beam and the limit plate. After sliding, the center of the pipe support will produce relative displacement with the center of the support beam. The greater the relative displacement, the greater the eccentricity of the vertical load on the support beam, which causes the support beam to be twisted.

[0004] In order to reduce the horizontal friction force caused by the axial deformation of the pipeline and the eccentricity of the vertical load on the support beam after the pipe support is displaced, the utility model provides a sliding pipe support with small eccentricity and low friction coefficient to overcome the defects of the existing technology. Utility Model Content

[0005] In view of the above problems, the purpose of the present utility model is to provide a sliding pipe support with small eccentricity and low friction coefficient.

[0006] In order to achieve the above-mentioned purpose, the utility model has a small eccentricity and a low friction coefficient of the sliding type pipe support, which includes a bracket beam, a pipe support body, a mirror stainless steel upper slide plate, a limit angle steel, a positioning plate and a plurality of polytetrafluoroethylene lower slide plates;

[0007] The positioning plate is adapted to the width of the support beam and is fixed to the top surface of the support beam. The upper surface of the positioning plate is provided with the polytetrafluoroethylene lower slide plate;

[0008] The mirror stainless steel upper slide plate is fixed to the bottom of the pipe support body;

[0009] The pipe support body is arranged on the positioning plate through a mirror stainless steel upper slide plate and a polytetrafluoroethylene lower slide plate, and the mirror stainless steel upper slide plate and the polytetrafluoroethylene lower slide plate form a sliding friction pair.

[0010] Furthermore, the pipe support body includes, from top to bottom, an arc-shaped top plate, a web and a bottom plate; the web is vertically arranged between the arc-shaped top plate and the bottom plate, and stiffening plates are spaced apart on both sides of the web; the upper and lower parts of each stiffening plate are welded to the arc-shaped top plate and the bottom plate respectively.

[0011] Furthermore, the mirror-finished stainless steel upper slide plate is adapted to the width of the bottom plate, and the mirror-finished stainless steel upper slide plate is arranged on the lower surface of the bottom plate.

[0012] Furthermore, the width of the bottom plate is 1-2 times the width of the support beam. Preferably, the width of the bottom plate is 1.2-1.8 times the width of the support beam.

[0013] Furthermore, bolt holes are respectively provided on both sides of the base plate, and the mirror stainless steel upper slide plate is fixed between the limiting angle steel and the base plate by bolts.

[0014] Furthermore, the positioning plate is provided with a plurality of positioning holes or grooves, and the polytetrafluoroethylene lower slide plate is embedded in the positioning holes or grooves on the positioning plate.

[0015] Furthermore, the polytetrafluoroethylene lower slide plate is a filled modified polytetrafluoroethylene composite sandwich slide plate.

[0016] The utility model has the following advantages:

[0017] 1) The utility model sets a mirror stainless steel upper slide and a polytetrafluoroethylene lower slide between the pipe support body and the bracket beam to form a sliding friction pair. The friction coefficient is about 0.1, which can effectively reduce the friction between the pipe support and the bracket beam.

[0018] 2) In the present invention, the width of the pipe support body is greater than the width of the support beam. The polytetrafluoroethylene lower slide is embedded and fixed in the center of the top surface of the support beam. The vertical load is transmitted to the support beam through the polytetrafluoroethylene lower slide. The polytetrafluoroethylene lower slide does not move with the sliding of the pipe support body. After the pipe support is displaced, the vertical load still acts on the center of the support beam, which can effectively reduce the eccentricity of the vertical load on the support beam, thereby reducing the torque generated by the vertical load on the support beam.

[0019] 3) The limiting angle steel in the utility model can not only fix the mirror stainless steel upper slide plate, but also play a limiting role to prevent the pipe support body from being separated from the bracket beam due to a large displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the sliding pipe support described in the utility model;

[0021] Figure 2 for Figure 1 A side view of the slide-down tube support shown;

[0022] Figure 3 for Figure 1 A top view of the tube support body in the shown downward-sliding tube support;

[0023] Figure 4 for Figure 1 A top view of the support beam is shown.

[0024] The components and parts numbers in this utility model are:

[0025] 1. Pipe support body; 101. Curved top plate; 102. Web plate; 103. Bottom plate; 104. Stiffener plate; 2. Mirror stainless steel upper slide; 3. Polytetrafluoroethylene lower slide; 4. Pipeline; 5. Support beam; 6. Limit angle steel; 7. Positioning plate. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0030] Example

[0031] like Figure 1 As shown, the utility model has a small eccentricity and a low friction coefficient. The sliding pipe support is arranged between the pipe 4 and the bracket beam 5. The sliding pipe support includes a pipe support body 1, a mirror stainless steel upper slide 2, a limiting angle steel 6, a positioning plate 7 and several polytetrafluoroethylene lower slides 3. The pipe 4 is fixed to the top of the pipe support body 1, the mirror stainless steel upper slide 2 is fixed to the bottom of the pipe support body 1 through the limiting angle steel 6, the polytetrafluoroethylene lower slide 3 is embedded in the positioning plate 7 and fixed to the top surface of the bracket beam 5, and the mirror stainless steel upper slide 2 and the polytetrafluoroethylene lower slide 3 form a sliding friction pair. The pipe 4 is affected by temperature and produces axial deformation. Since the pipe support body 1 is fixed to the pipe 4, the pipe support body 1 will move axially along the pipe 4. Before the pipe support body 1 and the support crossbeam 5 are relatively displaced, there is static friction between the pipe support body 1 and the support crossbeam 5. When the static friction exceeds the maximum static friction, the pipe support body 1 slides. The friction coefficient between the mirror stainless steel upper slide 2 and the polytetrafluoroethylene lower slide 3 is about 0.1, which is much smaller than the friction coefficient of steel against steel. The use of this friction pair can effectively reduce the friction between the pipe support body 1 and the support crossbeam 5.

[0032] like Figure 2As shown, the width of the pipe support body 1 is greater than the width of the support beam 5. The vertical load of the pipeline 4 is transmitted to the support beam 5 through the pipe support body 1, the mirror-finished stainless steel upper slide 2, and the polytetrafluoroethylene lower slide 3. After the pipe support body 1 is displaced, the vertical load still acts on the center of the support beam 5. Because the width of the pipe support body 1 is greater than the width of the support beam 5, and the polytetrafluoroethylene lower slide 3 is embedded and fixed to the center of the top surface of the support beam 5 and does not move with the sliding of the pipe support body 1, the vertical load still acts on the center of the support beam 5 after the pipe support body 1 is displaced. This can effectively reduce the eccentricity of the vertical load on the support beam 5, and thus reduce the torque generated by the vertical load on the support beam 5.

[0033] like Figure 1 、 Figure 2 、 Figure 3 As shown, the pipe support body 1 includes a curved top plate 101, a web 102, a bottom plate 103 and several stiffening plates 104. The curved top plate 101 fits against the outer wall of the pipe 4 and can effectively transfer the pipe load; the bottom plate 103 is arranged in the horizontal direction, and the web 102 is vertically arranged between the curved top plate 101 and the bottom plate 103. The stiffening plates 104 are arranged at intervals on both sides of the web 102 and are perpendicular to the web 102, and the upper and lower parts of each stiffening plate 104 are respectively connected to the curved top plate 101 and the bottom plate 103. The stiffening plates 104 can enhance the rigidity of the pipe support body 1 and prevent the pipe support body 1 from deformation.

[0034] like Figure 3 As shown, bolt holes are provided on both sides of the pipe support bottom plate 103, and the mirror stainless steel upper slide plate 2 is fixed between the limiting angle steel 6 and the bottom plate 103 by bolts. The limiting angle steel 6 not only fixes the mirror stainless steel upper slide plate 2, but also prevents the pipe support body 1 from being disengaged from the bracket crossbeam 5 due to large displacement.

[0035] like Figure 4 As shown, the positioning plate 7 is fixed to the top surface of the support crossbeam 5. The positioning plate 7 has multiple holes. The size of the holes in the positioning plate 7 matches the size of the PTFE lower slide 3. The edges and bottom of the PTFE lower slide 3 are evenly coated with epoxy resin and embedded in the corresponding holes in the positioning plate 7. In order to tightly combine the PTFE lower slide 3 with the positioning plate 7, epoxy resin is applied to the edges and bottom of the PTFE lower slide 3 to prevent the PTFE lower slide 3 from moving under the action of horizontal friction.

[0036] The PTFE lower slide plate 3 in this utility model can be circular, rectangular, or other shapes, and can be made of a filled and modified PTFE composite sandwich slide plate. This filled and modified PTFE composite sandwich slide plate is formed by cold-pressing and sintering powder. Compared to traditional PTFE slide plates, it has higher load-bearing capacity and lower compression deformation, meeting the load requirements of industrial pipelines.

[0037] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments. Various modifications can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0038] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A sliding pipe support with small eccentricity and low friction coefficient, characterized by: It includes a bracket crossbeam, a pipe support body, a mirror stainless steel upper slide, a limit angle steel, a positioning plate and several polytetrafluoroethylene lower slides; The positioning plate is adapted to the width of the support beam and is fixed to the top surface of the support beam. The upper surface of the positioning plate is provided with the polytetrafluoroethylene lower slide plate; The mirror stainless steel upper slide plate is fixed to the bottom of the pipe support body; The pipe support body is arranged on the positioning plate through a mirror stainless steel upper slide plate and a polytetrafluoroethylene lower slide plate, and the mirror stainless steel upper slide plate and the polytetrafluoroethylene lower slide plate form a sliding friction pair.

2. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 1, characterized in that: The pipe support body includes, from top to bottom, an arc-shaped top plate, a web and a bottom plate; the web is vertically arranged between the arc-shaped top plate and the bottom plate, and stiffening plates are spaced apart on both sides of the web; the upper and lower parts of each stiffening plate are welded to the arc-shaped top plate and the bottom plate respectively.

3. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 1, characterized in that: The mirror stainless steel upper slide plate is adapted to the width of the bottom plate, and the mirror stainless steel upper slide plate is arranged on the lower surface of the bottom plate.

4. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 3, characterized in that: The width of the bottom plate is 1-2 times the width of the support beam.

5. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 2, characterized in that: Bolt holes are respectively provided on both sides of the bottom plate, and the mirror stainless steel upper slide plate is fixed between the limiting angle steel and the bottom plate by bolts.

6. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 1, characterized in that: The positioning plate is provided with a plurality of positioning holes or grooves, and the polytetrafluoroethylene lower slide plate is embedded in the positioning holes or grooves on the positioning plate.

7. The sliding type pipe support with small eccentricity and low friction coefficient as claimed in claim 4, characterized in that: The polytetrafluoroethylene lower slide plate is a filled modified polytetrafluoroethylene composite sandwich slide plate.

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