Welding-free modular combined type bearing support suitable for groove connection type vertical pipeline

Abstract

The invention discloses a welding-free modularized combined type bearing support suitable for a groove connection type vertical pipeline, which comprises a bearing short pipe, opposite clamping plates and a bearing base are arranged outside the bearing short pipe, a tongue-and-groove mortise is arranged in the middle of the bearing short pipe, the opposite clamping plates are in a two-piece spliced type, and the bearing base is arranged on the opposite clamping plates. Tongue-and-groove mortises are formed in the inner sides of the opposite clamping plates, tongue-and-groove mortises are formed in the inner sides of the opposite clamping plates, the tongue-and-groove mortises are inserted into the tongue-and-groove mortises, opposite clamping plate flange plates and opposite clamping plate steel rib plates are arranged outside the opposite clamping plates, and horizontal limiting parts and vertical limiting parts are arranged at the positions, corresponding to the opposite clamping plate flange plates and the opposite clamping plate steel rib plates, of the bearing base correspondingly. Compared with a conventional bearing support, the bearing support has the advantages of being free of welding, free of damage to an anti-corrosion zinc coating, reasonable in stress, safe, reliable, rapid to install and the like.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a welding-free modular combined load-bearing bracket suitable for vertical pipelines in a groove connection form. Background Art

[0002] In the water supply, drainage, heating, air conditioning and other systems of a high-rise building, vertical pipes are responsible for the transportation of liquids and the transmission of pressure. The load-bearing bracket is the key structure to support these pipes. If the bracket is improperly designed or not installed firmly, it may cause the pipes to move, shake or even fall off, causing serious safety accidents. Therefore, the reasonable design of the load-bearing bracket form, the selection of appropriate materials and installation methods can ensure the stability and reliability of the load-bearing bracket and guarantee the safety of the building.

[0003] At present, the construction industry has released a number of atlases and specifications on supports and hangers. For example, the "Indoor Pipe Support and Hanger 03S402" issued by the Ministry of Housing and Urban-Rural Development provides several vertical support drawings on P78-80, P83-84, and P86-87. Local standard atlases include Shanxi Province's "Pipe Support, Hanger 05S9", P102-121 provides several single or multiple vertical pipe fixed supports and sliding supports, and P122 provides two forms of vertical pipe through the floor fixed support. Henan Province's "Pipe Support, Hanger 12YS10" local atlas P101-120 also provides a variety of forms of vertical pipe checkpoint reference practices, which are similar in form to the Shanxi Province atlas. After summarizing the recommended practices of the industry's atlas specifications and the practices of vertical pipe load-bearing supports in actual projects, the practices of vertical pipe supports can be summarized into three types: vertical sliding supports, vertical fixed supports, and through-floor supports.

[0004] Vertical sliding brackets generally use U-bolts or 20-40mm wide flat steel to fix the vertical pipes. The form refers to the atlas "Indoor Pipe Brackets and Hangers 03S402" P140, which can be used for DN25-DN400 vertical galvanized steel pipes, welded steel pipes, and stainless steel pipes. This type of bracket is mainly used to prevent the vertical pipe from sliding or displacing horizontally. It transmits the load by the static friction between the U-bolts or flat steel and the outer wall of the steel pipe, and is not used as a bracket to bear the vertical water pipe load. The main applicable pipe specifications are DN25-DN300.

[0005] In addition to the U-bolts or flat steel clamps of the sliding bracket, the vertical fixed bracket welds two angle steel limit blocks on the pipe. The two limit blocks clamp the bracket crossbar to prevent the vertical pipe from moving upward or downward along the axial direction of the pipe. For the form, refer to the atlas "Pipeline Support, Hanger 05S9" P112. This form of fixed bracket requires the limit blocks to be welded to the pipe, so it can only be used for steel pipes that can be welded. It cannot be used without destroying the galvanized or other anti-corrosion layer, such as galvanized steel pipes or steel pipes with plastic coating inside and outside. On the other hand, due to the limited length of the weld between the limit block and the steel pipe, the vertical load will be concentrated on the weld, causing uneven force on the steel pipe and local stress concentration, which will have an adverse effect on the rooting point of the limit block.

[0006] The load-bearing bracket through the floor slab usually adopts four steel pipe ribs welded on the outside of the pipe, and the steel plate ribs are supported on the channel steel bracket. The form refers to "Indoor Pipe Brackets and Hangers 03S402" P87. The main function is to bear the load of the vertical pipe and transfer the weight of the vertical pipe itself, the weight of the conveyed liquid, and the weight of the pipe flow to the floor slab. This form of fixed bracket also requires welding operations, so it can only be used for steel pipes that can be welded. It cannot be used without destroying the galvanized or other anti-corrosion layers. It does not have a limit function and does not have the function of a fixed bracket. It cannot be used for pipes that may produce expansion, such as hot and cold water.

[0007] In addition to the standard atlas, the State Intellectual Property Office of the People's Republic of China has announced several types of vertical pipe supports, such as CN104197099A "Integrated assembled support for medium-pressure vertical pipes", which combines the load-bearing support and the guide support into one, saving installation space and ensuring the pressure-bearing capacity of the pipe, but requires welding on the pipe wall and cannot be used for galvanized steel pipes or plastic-coated steel pipes; CN104315256B "Vertical large-diameter vertical pipe attached cantilever load-bearing support", which is set on the horizontal cantilever beam at the support connecting rod and is suitable for vertical large-diameter vertical pipes in high-rise buildings. The pipe is installed when there is no load-bearing floor, but the fixing clamp of the bracket only transfers the vertical pipe load to the bracket through static friction. Its load-bearing capacity depends on the tightening force of the bolts. When it is used for pipes that will produce thermal expansion or when the tightening force of the bolts is insufficient during construction, safety problems may arise; CN112145804A "A vertical pipe fixing bracket and its manufacturing method", the invention is a square frame built of steel sections, a wooden support is provided at the center of the upper surface of each side of the square frame, a support plate is provided above the wooden support, and the support plate and the wooden support are fixed with screws; four ribs are welded in a cross-shaped manner on the circumferential wall of the vertical pipe. According to the description, welding work is also required on the pipe wall, and it cannot be used for galvanized steel pipes.

[0008] Therefore, in order to solve the above problems, it is necessary to invent a load-bearing bracket that can bear the vertical load of large or super-large (DN400 or above) vertical pipelines without damaging the anti-corrosion layer of the vertical pipeline and without welding operations. The load distribution on the contact surface between the bracket and the pipeline is uniform, and the bracket is safe and reliable. This bracket can not only bear weight, but also serve as a fixed bracket. Under the basic premise of meeting the safety of use, it must also have the characteristics of factory production, modular installation, and strong parts interchangeability. Summary of the invention

[0009] The object of the present invention is to address the deficiencies in the prior art and to provide a welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines, comprising a load-bearing short tube, the outside of the load-bearing short tube is provided with a plywood and a load-bearing base, wherein a tongue-and-groove groove is provided in the middle of the load-bearing short tube, the plywood is a two-piece spliced ​​type, the inner side of the plywood is provided with a tongue-and-groove tenon, the tongue-and-groove tenon is inserted into the tongue-and-groove groove, the outside of the plywood is provided with a plywood flange plate and a plywood steel rib plate, and the load-bearing base is respectively provided with horizontal and vertical limits corresponding to the positions of the plywood flange plate and the plywood steel rib plate, the plywood flange plate is inserted into the horizontal limit plate for fixation, and the plywood steel rib plate is inserted into the vertical limit plate for fixation, the load-bearing short tube, the plywood and the load-bearing base are all fixed by mechanical connection, and the force applied to the load-bearing short tube is transmitted to the load-bearing base through the plywood.

[0010] Preferably, an upper end annular groove is provided at the upper end of the load-bearing short tube, and a lower end annular groove is provided at the lower end of the load-bearing short tube.

[0011] Preferably, the length of the load-bearing short tube is 600mm-2000mm.

[0012] Preferably, the two clamping plates are joined together by fastening bolts, and the fastening screws pass through the flange plates of the clamping plates.

[0013] Preferably, bolt holes are provided on the steel ribs of the clamping plates, and the size and position of the bolt holes match the vertical limit bolt holes of the load-bearing base.

[0014] Preferably, the horizontal limit and vertical limit of the load-bearing base are both arranged on the cross arm of the load-bearing base. The cross arm of the load-bearing base is made of 8# to 20# galvanized channel steel. The vertical limit and horizontal limit are composed of two steel plates. The distance between the two steel plates is 2-3mm larger than the thickness of the plywood steel rib plate and the plywood flange plate after splicing.

[0015] Preferably, a load-bearing base leg is provided at the lower part of the load-bearing base, a load-bearing base anchor plate is provided at the lower end of the load-bearing base leg, and a U-shaped bolt hole is provided on the load-bearing base anchor plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention offsets the gravity load of the vertical water pipe by two force modes: friction and tenon structure. The working principle is that the gravity of the vertical water pipe is first transmitted to the load-bearing short pipe and its spliced ​​plywood, and the force of the plywood is transmitted to the load-bearing base through the flange plate and steel rib plate on the plywood, and then transmitted to the floor slab. The present invention can be used for pipeline projects such as building water supply, fire water supply, production water supply, etc. with groove connection of DN80~DN600 and temperature not exceeding 80℃. Compared with conventional load-bearing supports, the present invention has the advantages of no welding, no damage to the anti-corrosion galvanized layer, reasonable force, safety and reliability, and quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the load-bearing bracket of the present invention;

[0019] Figure 2 It is a structural schematic diagram of section A of the present invention;

[0020] Figure 3 It is a partially enlarged structural schematic diagram of the present invention after assembly;

[0021] Figure 4 It is a structural schematic diagram of the tongue-and-groove tenon flange component of a load-bearing short tube of the present invention (vertical section of the load-bearing short tube);

[0022] Figure 5 Schematic diagram of the dimensions of the tongue-and-groove tenon flange component of the load-bearing short tube of the present invention

[0023] Figure 6 This is a schematic diagram of the structure of the splint tilted 45° to the left in the present invention;

[0024] Figure 7 This is a perspective view of the structure of the splint tilted right at 45° according to the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the load-bearing base of the present invention.

[0026] In the figure: 1, load-bearing short tube, 101, annular groove at the upper end, 102, annular groove at the lower end, 103, tongue-and-groove groove;

[0027] 2. Clamping plate, 201, fastening bolts, 202, steel rib plate, 203, flange plate, 204, tongue and groove tenon, 205, vertical limit bolt hole for clamping plate, 206, fastening bolt hole for clamping plate;

[0028] 3. Load-bearing base, 301, horizontal limit, 302, vertical limit, 303, vertical limit bolt, 304, support leg, 305, anchor plate, 306, U-shaped bolt hole, 307, vertical limit bolt hole of load-bearing base, 308, limit slot;

[0029] A. The cross section of the contact between the splint and the load-bearing short pipe, B. The width of the groove of the tongue and groove mortise and tenon parts of the load-bearing short pipe, C. The bottom diameter of the groove of the tenon and tenon parts, E. The outer diameter of the vertical pipe, T. The minimum wall thickness of the pipe. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0031] Reference Figures 1 to 8 The present invention discloses a welding-free modular combined load-bearing bracket suitable for vertical pipelines with groove connection, wherein the "vertical pipelines with groove connection" commonly include groove-connected galvanized steel pipes, groove-connected plastic-coated composite pipes, groove-connected stainless steel pipes, etc.

[0032] The "welding-free" mentioned above has two meanings. On the one hand, it means that there is no need to weld additional steel ribs or other load-bearing parts on the outer surface of the vertical pipeline. Only the friction of the contact surface and the tongue-and-groove joints of the flange parts of the load-bearing bracket and the tenon parts of the vertical pipeline are used to connect with each other to transfer the vertical load to the load-bearing bracket. On the other hand, after the various components are produced in the processing plant at the engineering or construction site, they are transported to the construction work surface in the form of loose parts and assembled directly on site. No welding operation is required, which reduces the damage to construction workers caused by electric welding in the cramped environment of the vertical pipe shaft.

[0033] The "modular combination" means that after selecting the bracket form of corresponding specifications according to the method of the present invention according to the characteristics of the application object, it can be prefabricated in the project or construction site according to the size, form, and steel specifications given by the present invention. Because the same technical requirements and specifications are adopted, each component has a strong versatility and can be processed in each module at the same time. After the loose parts are processed and transported to the construction work surface, they can be assembled.

[0034] The "fixed load-bearing bracket" mentioned above means that the present invention not only has the function of bearing the vertical pipe load, but also has a vertical limit design. According to the usage scenario, after installing the limit bolt, the present invention can be used as a fixed bracket and a load-bearing bracket; after removing the limit bolt, the present invention can be used as a conventional guide bracket and a load-bearing bracket. If used in conjunction with the corrugated compensator of the vertical pipeline, the present invention is installed above the corrugated compensator according to the distance requirements of the drawings and specifications to ensure that the corrugated compensator can freely extend and retract on the guide bracket during operation and limit its axial displacement.

[0035] The present invention mainly consists of three parts: a galvanized load-bearing short tube 1 with two annular grooves at one end and an annular tongue-and-groove groove 103 in the middle, two spliced ​​clamping plates 2 with tongue-and-groove tenons 204 on the inner sides, and a load-bearing base 3 with a horizontal limit 301 and a vertical limit 302.

[0036] The specifications, materials and pipe thickness of the first part of the load-bearing short pipe 1 should be consistent with those of the vertical pipe. The two ends of the load-bearing short pipe 1 are each provided with an annular groove, specifically an annular groove 101 at the upper end and an annular groove 102 at the lower end. The distance from the grooves at both ends to the ends, the depth and size of the grooves meet the requirements of the Technical Specification for Grooved Pipe Connectors GB / T36019. The middle part of the load-bearing short pipe 1 is provided with a tenon component of an annular tongue-and-groove tenon 204. The minimum wall thickness, tenon depth and size of the steel pipe at the tenon meet the requirements of the Technical Specification for Grooved Pipe Connectors GB / T 36019. The length of the load-bearing short pipe 1 is 600mm to 2000mm. The length of the load-bearing short pipe 1 is determined according to different application scenarios to ensure that the clamp connection between the lower end groove and the vertical pipe is not inside the floor slab.

[0037] The second part of the splicing type with tongue and groove tenon 204 is the core component of the present invention. The main structure is an Ω-shaped semicircular steel plate with 80mm steel plates on both sides as the splint flange plate 203. The thickness of the steel plate is 5mm to 10mm according to the application object, and the width is 100mm to 300mm. A complete set of splints is composed of two splints of the same specifications and models spliced ​​together by fastening bolts 201. The splint is provided with a splint steel rib plate 202, and the force applied to the splint is transmitted to the load-bearing base through the splint flange plate 203 and the splint steel rib plate 202. In addition to transmitting gravity, the splint steel rib plate 202 and the splint flange plate 203 have a limit function after being assembled with the limit, which limits the horizontal and vertical displacement of the load-bearing short pipe 1. A flange component with an annular tongue and groove tenon 204 is provided in the middle part of the inner arc side of the splint, and the size of the annular flange component matches the annular concave tenon component. The number of the tongue-and-groove tenons 204 is 1 to 2 according to the size of the pipeline.

[0038] There are two ways to bear force on the splint. One is to transfer gravity through the static friction between the contact surface of the splint and the load-bearing short pipe 1, and the other is to transfer gravity through the connection structure between the flange component and the annular tenon component. The inner side of the splint is sprayed with plastic, with a thickness of 4μm, to enhance wear resistance and corrosion resistance, increase friction, and protect the galvanized layer and anti-corrosion layer of the pipeline. This force-bearing method can evenly transfer the pipeline load to the load-bearing base without destroying the anti-corrosion protective layer of the vertical pipeline, which can avoid stress concentration on the contact surface between the pipeline and the bracket and reduce the impact of the welding heat process on the physical properties of the steel pipe.

[0039] The clamping plate steel rib is provided with bolt holes, whose size and position match the load-bearing base vertical limit bolt holes 307. When the vertical displacement is required to be limited, the load-bearing base limit is connected to the clamping plate steel rib using the vertical limit bolts 303.

[0040] The third part is the load-bearing base, and the cross arm of the load-bearing base has horizontal and vertical limiters. The cross arm of the support is selected from 8# to 20# galvanized channel steel according to the specifications of the load-bearing short pipe 1. The limit is composed of two steel plates, and the spacing between the two steel plates is 2 to 3 mm larger than the thickness of the splint steel rib plate and the splint flange plate 203 after splicing to accommodate assembly errors. The load-bearing base has 4 legs 304 of the same specifications. The galvanized channel steel of the same specifications as the horizontal cross arm is selected, and the legs 304 are welded to the anchor plate 305. Two U-shaped bolt holes 306 are provided on each anchor plate 305 to avoid hitting the structural steel bars during drilling and positioning in the later stage, causing the support to deviate. The connection direction of the legs 304 and the cross arm is staggered horizontally and vertically. Such installation can make the directions of the waist-shaped bolt holes staggered into a cross shape, which can reduce the difficulty of assembly and ensure that the support does not move in the direction of the waist-shaped bolt holes.

[0041] The three parts can be prefabricated in the factory or processed in the processing plant on the construction site. After the three parts are processed, they are transported to the work surface for on-site assembly. The advantages of prefabricated production and modular assembly are that they can greatly shorten the construction period, concentrate the problems in the production process of parts in the processing plant, reduce the on-site construction time, not only save time costs, but also improve the flexibility of project progress control; the second aspect is that the quality is controllable and cost-saving. Unified centralized processing can establish a processing and quality control system, and the processing quality of each component can be centrally controlled to ensure quality consistency and quality control stability. Centralized processing can reduce the use of molds and processing tools, reduce the number of workers and reduce the intensity of manual labor; the third aspect is environmental protection and energy saving, which is beneficial to the health of workers. It can reduce the generation of waste materials, consume less resources, and be more environmentally friendly and energy-saving. At the same time, it avoids construction personnel from working with fire in cramped spaces such as shafts, reducing interference and pollution to the environment during construction.

[0042] The specific implementation process on site is as follows:

[0043] Selection and cutting → Production and processing → Inspection at the exit → Acceptance at the site → On-site layout to locate the position of the bolts of the load-bearing base → Place the load-bearing base → Assemble the load-bearing short pipe 1 and the clamping plate → The assembled clamping plate falls into the limit groove 308 of the load-bearing base → Install the limit bolt (not required when not used as a fixed bracket) → Check the concentricity of the pipeline axis → Connect the load-bearing short pipe 1 with the vertical pipeline → Installation completed

[0044] The specifications, materials, and pipe thickness of the first part of the load-bearing short pipe 1 must be consistent with the vertical pipe. The two ends of the load-bearing short pipe 1 are each provided with an annular groove, and the middle part is provided with a tenon component of an annular tongue-and-groove tenon 204. The distance from the groove to the end, the depth and size of the groove, the minimum wall thickness of the steel pipe at the tenon, the depth and size of the tenon must comply with the requirements of the Technical Specification for Grooved Pipe Connectors GB / T 36019. The length of the load-bearing short pipe 1 is 600mm to 2000mm. The length of the load-bearing short pipe 1 is determined according to different application scenarios to ensure that the clamp connection between the lower end groove and the vertical pipe is not inside the floor slab.

[0045] When using a groove rolling machine to process grooves, the following steps should be followed:

[0046] Place the qualified pipes on the groove rolling machine and the tail frame of the groove rolling machine; use a level to measure the pipe to make it in a horizontal position;

[0047] Put the end face of the pipe close to the stop face of the groove rolling machine, so that the pipe axis is perpendicular to the stop face of the groove rolling machine;

[0048] Start the groove rolling machine to roll the annular groove;

[0049] After stopping the machine, use measuring tools to measure the depth and width of the groove. After confirming that the groove size meets the requirements, the groove rolling machine is unloaded and the pipe is taken out. During the groove rolling process of the groove rolling machine, longitudinal and angular displacement of the pipe is strictly prohibited.

[0050] The annular groove of the flat end of the load-bearing short pipe 1 must be processed and formed by a special groove rolling machine. The groove can be processed according to the designed length at the construction site. The minimum wall thickness and groove size of the steel pipe shall comply with the requirements of the "Technical Specification for Grooved Pipe Connectors GB / T 36019". The tenon component with an annular tongue and groove tenon 204 in the middle part is also processed and formed by a special groove pressing machine. The large sample of the tenon component is marked as follows Figure 5 As shown, the specific dimensions of the tenon and mortise parts are processed according to Table 1 below. The outer diameter and wall thickness of the pipe are carried out according to the design parameters. If there are no design requirements, refer to Table 1.

[0051] Table 1 Load-bearing short tube 1 Tongue and groove mortise 204 Tenon and groove parts (tongue and groove mortise) Reference dimensions Unit (mm)

[0052]

[0053]

[0054] The grooves on both sides of the end of the load-bearing short pipe 1 and the surface of the tenon parts of the annular tongue-and-groove tenon 204 after forming should be flat, without bumps and rolling marks. The center of the groove should be concentric with the pipe wall. The grooves formed by the groove rolling machine on the pipe shall not damage the galvanized layer of the pipe and various coatings and lining layers on the inner wall.

[0055] The second part, the spliced ​​plywood with tongue and groove tenon 204, is the core component of the present invention. The main structure is an Ω-shaped semicircular steel plate with 80mm flange plates 203 on both sides. The thickness of the plywood steel plate is between 5mm and 10mm according to the application object, and the width is 100mm to 350mm. The number of tongue and groove tenon 204 is set to 1 to 2 according to the size of the pipeline. The thickness of the steel rib plate is twice that of the flange plate 203.

[0056] The inner wall arc diameter of the arc steel plate of the clamp plate should be the same as the outer diameter of the vertical pipe, and the limit deviation shall meet the requirements of Table 1. The clamp plate body includes the arc part and the flange plates 203 on both sides. The flange plates 203 and the arc steel plates are machined and cold-bent to ensure the shear resistance of the flange plate 203 and the arc connection of the clamp plate. The clamp plate rigid rib plate and the arc steel plate of the clamp plate are welded and fully welded on both sides. The weld should be full, uniform, free of bubbles, slag inclusions and other defects. The cross-section of the weld should be an isosceles triangle as much as possible, and the situation of incomplete penetration should be prevented. The maximum thickness of the weld should not exceed the thickness of the thinner plate, and the weld leg size of the weld should not be greater than 2 times the thickness of the thicker plate, nor should it be greater than 1.2 times the thickness of the thinner plate. At the same time, the width of the weld should not be less than 1.5 times the thickness of the thinner plate. After welding, apply two layers of anti-rust primer and a layer of silver powder paint as the topcoat.

[0057] The size of the fastening bolt 201 and the limit bolt is selected from φ8 to φ16 according to the application object. The fastening bolt hole 206 of the clamping plate and the vertical limit bolt hole 205 of the clamping plate should match the bolts. For the specific dimensions of each part of the clamping plate, refer to Table 2.

[0058] Table 2 Reference dimensions of various parts of the splint Unit (mm)

[0059]

[0060] When assembling the clamping plate, first close the tongue and groove of the clamping plate and the tongue and groove of the load-bearing short pipe 1. After the closure, install the fastening bolts immediately, and tighten the bolts evenly and alternately. After installation, check and confirm that the flange part of the tongue and groove 204 is embedded in the groove and groove part all around. When adjusting the fastening bolts, it is necessary to carefully control the degree of tightening to ensure that the static friction force on the pipeline is moderate. Too tight or too loose tightening force will have an adverse effect on the pipeline, so it is necessary to ensure the tightness of the bolts through repeated tests and inspections. At the same time, ensure that the installation position of the bolts is accurate to avoid causing additional stress or damage to the pipeline.

[0061] After the assembly of the splint and the load-bearing short pipe 1 is completed, the flange plate 203 is aligned with the horizontal limit groove, the steel rib plate is aligned with the vertical limit groove, and is placed along the axis of the pipeline. Then the concentricity of the pipeline is remeasured. After it is correct, the load-bearing short pipe 1 and the clamp of the vertical pipeline can be installed.

[0062] When the present invention is also used as a fixed bracket, it is necessary to limit the vertical displacement, and the limit bolts are used to connect the load-bearing base limit with the clamping plate steel ribs. If used with the corrugated compensator of the vertical pipeline, according to the distance requirements of the drawings and specifications, the present invention is installed above the corrugated compensator to ensure that the corrugated compensator can freely expand and contract on the guide bracket during operation and limit its axial displacement.

[0063] The third part is the load-bearing base, and the cross arm of the load-bearing base has horizontal and vertical limiters. The cross arm of the support uses 8#~20# galvanized channel steel according to the specifications of the load-bearing short tube 1. The limit is composed of two 10mm steel plates, and the spacing between the two steel plates is 2~3mm larger than the thickness of the splint steel rib plate and the splint flange plate 203 after splicing to accommodate assembly errors. The horizontal limit height is 50mm, and the vertical limit height is consistent with the steel rib plate. The connection between the limit steel plate and the cross arm of the base is welded, and both sides are fully welded. The weld should be full, uniform, free of bubbles, slag inclusions and other defects. The cross section of the weld should be an isosceles triangle as much as possible, and the situation of incomplete penetration should be prevented. The maximum thickness of the weld should not exceed the thickness of the thinner plate, and the weld leg size of the weld should not be greater than 2 times the thickness of the thicker plate, nor should it be greater than 1.2 times the thickness of the thinner plate. At the same time, the width of the weld should not be less than 1.5 times the thickness of the thinner plate. After welding, apply two layers of anti-rust primer and one layer of silver powder paint as topcoat.

[0064] The vertical limit is designed with a vertical limit bolt hole, and its size and position should be consistent with the bolt hole of the plywood steel rib.

[0065] The load-bearing base has four legs 304 of the same specifications. Galvanized channel steel of the same specifications as the horizontal crossarm is selected, and the legs 304 are welded to the anchor plate. Each base plate is provided with two waist-shaped bolt holes. Since the waist-shaped bolt holes are designed with positioning features, it can ensure that the bolts are accurately inserted into the holes, avoiding repeated adjustment and calibration of the holes, thereby simplifying the steps of installing expansion bolts and improving efficiency, effectively reducing the difficulty of construction, and avoiding the displacement of the support caused by hitting the structural steel bars during the later drilling positioning.

[0066] For the specific dimensions of each part of the load-bearing base, refer to Table 3.

[0067] Table 3 Reference dimensions of various parts of the load-bearing base (mm)

[0068]

[0069] The connection directions of the support legs 304 and the cross arms are staggered horizontally and vertically. Such installation can make the directions of the waist-shaped bolt holes staggered into a cross shape, which can reduce the difficulty of assembly and ensure that the support does not produce horizontal displacement in the direction of the waist-shaped bolt holes. The anchor bolts are φ12 type.

[0070] When installing the load-bearing base, first clean the construction area to ensure that the foundation surface is flat, dry and clean. Determine the position of the anchor bolts according to the design drawings and lay the lines. First place the base according to the position and then re-measure the concentricity of the pipeline. After the re-measurement is correct, drill the holes. The diameter and depth of the holes should meet the design requirements and the specifications of the anchor bolts.

[0071] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A welding-free modular combined load-bearing bracket suitable for vertical pipelines in groove connection form, characterized in that: It comprises a load-bearing short tube, the outside of which is provided with a plywood and a load-bearing base, wherein a tongue-and-groove is provided in the middle of the load-bearing short tube, the plywood is two-piece spliced ​​together, the inner side of the plywood is provided with a tongue-and-groove tenon, the tongue-and-groove tenon is inserted into the tongue-and-groove, the outside of the plywood is provided with a plywood flange plate and a plywood steel rib plate, the load-bearing base is respectively provided with horizontal and vertical limits corresponding to the positions of the plywood flange plate and the plywood steel rib plate, the plywood flange plate is inserted into the horizontal limit plate for fixation, the plywood steel rib plate is inserted into the vertical limit plate for fixation, the load-bearing short tube, the plywood and the load-bearing base are all fixed by mechanical connection, and the force applied to the load-bearing short tube is transmitted to the load-bearing base through the plywood.

2. According to claim 1, a welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines, characterized in that: The upper end of the load-bearing short tube is provided with an upper end annular groove, and the lower end of the load-bearing short tube is provided with a lower end annular groove.

3. A welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines according to claim 2, characterized in that: The length of the load-bearing short tube is 600mm-2000mm.

4. A welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines according to claim 3, characterized in that: The two clamping plates are joined together by fastening bolts, and the fastening screws pass through the flange plates of the clamping plates.

5. A welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines according to claim 4, characterized in that: The pair of clamping plate steel ribs are provided with bolt holes, the size and position of which match the bolt holes of the vertical limit of the load-bearing base.

6. A welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines according to claim 5, characterized in that: The horizontal limit and vertical limit of the load-bearing base are both set on the cross arm of the load-bearing base. The cross arm of the load-bearing base is made of 8#~20# galvanized channel steel. The vertical limit and horizontal limit are composed of two steel plates. The distance between the two steel plates is 2-3mm larger than the thickness of the plywood steel rib plate and the plywood flange plate after splicing.

7. A welding-free modular combined load-bearing bracket suitable for groove-connected vertical pipelines according to claim 6, characterized in that: The lower part of the load-bearing base is provided with a load-bearing base leg, the lower end of the load-bearing base leg is provided with a load-bearing base anchor plate, and the load-bearing base anchor plate is provided with a U-shaped bolt hole.

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