Building structure reinforcing device

By designing interchangeable reinforcement components and modular structures, the problems of limited applicability and difficulty in adjustment of existing building reinforcement devices have been solved, enabling reinforcement of columns of various shapes and low-cost maintenance.

CN223689363UActive Publication Date: 2025-12-19HUBEI HANHOU BAICHENG ARCHITECTURAL DECORATION ENG CO LTD
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Patent Information

Application Number
CN202423265808.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-12-19
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

Existing building reinforcement devices have a limited range of applications, are difficult to adjust and replace, resulting in high costs and environmental unfriendliness.

Method used

The design incorporates interchangeable reinforcement components and a modular structure, enabling reinforcement and size adjustment of columns in various shapes through the cooperation of adjustment blocks and positioning frames, and supporting the individual replacement of worn components.

Benefits of technology

It expands the application scope of reinforcement devices, simplifies the adjustment process, reduces costs, reduces waste, and is conducive to energy conservation and environmental protection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a building structure reinforcing device which comprises a stand column, mounting seats are arranged on the two sides of the stand column, the mounting seats are L-shaped, positioning frames are fixedly connected to the front end face and the rear end face of each mounting seat, the positioning frames are C-shaped, threaded pipes are fixedly connected to the positioning frames, the threaded pipes are communicated with the positioning frames, and the threaded pipes are communicated with the positioning frames. A threaded pipe is arranged in the mounting seat, a bolt matched with the threaded pipe is in threaded connection in the threaded pipe, an adjusting block is inserted into the positioning frame, an adjusting groove is formed in the surface of the adjusting block, a plurality of mounting holes are formed in the side wall of the mounting seat, and a reinforcing assembly is mounted on the mounting seat. The column type building structure can be reinforced through the reinforcing assembly, the shape of the reinforcing assembly can be replaced according to the different shapes of the columns, the application range is wide, the position of the reinforcing assembly can be adjusted according to the columns of different sizes, the reinforcing assembly can be independently replaced, and energy conservation and environment protection are facilitated.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to building reinforcement technical field, especially, relate to a building structure reinforcing device. BACKGROUND

[0002] In order to improve the safety, durability and serviceability of building structure, ensure that it can satisfy the established functional requirements, need reinforcing building structure.Through reinforcing, both can continue the use value of building structure, and can guarantee that it meets modern safety and functional demand, is the important means of building maintenance and protection.

[0003] At present, the reinforcing device on the market has many kinds, such as the building structure reinforcing device with the announcement number CN210622363U disclosed on Chinese patent network, this reinforcing device can reinforce the column type building structure, but there are some defects and deficiencies to be improved: (1) some existing reinforcing devices often can only reinforce square or circular column structure, when needing to reinforce column structure of different shapes, the original shape reinforcing assembly can not be used, only the whole reinforcing device can be re-ordered, and the application range is small; (2) the structure of some existing reinforcing devices is relatively complex, when needing to reinforce column structure of different sizes, the position of reinforcing assembly is not easy to adjust, and a large amount of manpower and time is often needed in the adjusting process; (3) some existing reinforcing devices are integrated structure, and the related reinforcing assembly is often fixedly connected and difficult to disassemble, when the reinforcing assembly is abraded or deformed due to long-time use, the reinforcing assembly can not be replaced alone, and the whole reinforcing device can only be replaced, which not only increases additional cost, but also causes waste, and is not conducive to energy conservation and environmental protection.Therefore, in view of the above problems, the building structure reinforcing device has important significance. UTILITY MODEL CONTENTS

[0004] The utility model provides a building structure reinforcing device, and the column type building structure can be reinforced through the reinforcing assembly, the shape of reinforcing assembly can be replaced according to the difference of column shape, and the whole reinforcing device need not be re-ordered, so that the application range of the whole reinforcing device is effectively expanded; the two mounting seats can be connected and fixed through the mutual cooperation between adjusting block and positioning frame, and the spacing between the two mounting seats can be changed at will, so that the position of reinforcing assembly can be adjusted according to column of different sizes, and the whole adjusting process is very convenient, and a large amount of manpower and time is not needed; through the modular design, when the reinforcing assembly is abraded or deformed due to long-time use, the reinforcing assembly can be replaced alone, and the whole reinforcing device need not be replaced, so that the cost is effectively reduced, waste is avoided, and energy conservation and environmental protection are favorable, and the problems in the background art are solved.

[0005] To solve the above technical problems, the utility model is through the following technical schemes to realize:

[0006] The utility model discloses a building structure reinforcing device, including stand, both sides of the stand all are provided with mounting seat, the mounting seat is L -shaped, and its front end surface and rear end surface all are fixedly connected with positioning frame, the positioning frame is C -shaped, and the positioning frame is fixedly connected with threaded tube on, threaded tube is linked together with positioning frame, and the threaded tube is screwed with the bolt that cooperates with it in the threaded connection, the positioning frame inserts the adjusting block, adjusting block's surface is provided with adjusting groove, the lateral wall of mounting seat is provided with a plurality of mounting holes, and mounting seat installs reinforcing assembly on,

[0007] The reinforcing assembly includes a reinforcing plate, a plurality of threaded studs are fixedly connected to one side of the reinforcing plate, and nuts are threadedly connected to the threaded studs.

[0008] Further, the stand is square, and the side of the reinforcing plate away from the threaded studs is a plane.

[0009] Further, a layer of wear-resistant pad is provided on the surface of the side of the reinforcing plate away from the threaded studs.

[0010] Further, the number of threaded studs is the same as that of mounting holes, the diameter of the threaded studs corresponds to the hole diameter of the mounting holes, and the center of each threaded stud corresponds to the center of each mounting hole.

[0011] Further, the adjusting block is rectangular, the width of the adjusting block corresponds to the width of the inner wall of the positioning frame, and the adjusting groove is rectangular, the groove width of the adjusting groove corresponds to the inner diameter of the threaded tube.

[0012] Further, the lateral wall of the mounting seat is fixedly connected to a pair of reinforcing ribs, the reinforcing ribs are triangular, the bottom of the reinforcing ribs is fixedly connected to the bottom of the mounting seat, and the reinforcing ribs are symmetrically distributed about the mounting holes.

[0013] Further, the bottom surface of the mounting seat is provided with a plurality of anti-skid pads, the anti-skid pads are long strips, and are linearly distributed at equal distances along the length direction of the bottom of the mounting seat, and the surface of the anti-skid pads is provided with a herringbone anti-skid pattern.

[0014] The utility model discloses relative to prior art includes the following beneficial effects:

[0015] (1) the building structure reinforcing device in the utility model in use, through reinforcing assembly can reinforce the stand column type building structure, and the shape of reinforcing assembly can be replaced according to the different shape of stand column, and need not to re-customize entire reinforcing device, thereby effectively expands the application range of entire reinforcing device;

[0016] (2) The building structure reinforcing device in the utility model is used, two mounting seats can be connected and fixed through the cooperation between the adjusting block and the positioning frame, the spacing between the two mounting seats can be changed at will, the position of the reinforcing assembly can be adjusted according to the different sizes of the stand, the whole adjusting process is very convenient, and a large amount of manpower and time is not needed to be consumed;

[0017] (3) The building structure reinforcing device in the utility model is used, through modular design, when the reinforcing assembly is abraded or deformed due to long-time use, the reinforcing assembly can be replaced alone, the whole reinforcing device does not need to be replaced, thereby the cost is effectively reduced, waste is avoided, and energy saving and environmental protection are beneficial.

[0018] Of course, it is not necessary for any product implementing the utility model to simultaneously achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic view of the building structure reinforcing device of the utility model;

[0021] Figure 2 It is a structural schematic view of the mounting seat in the utility model;

[0022] Figure 3 It is a bottom view of the mounting seat in the utility model;

[0023] Figure 4 It is a structural schematic view of the adjusting block in the utility model;

[0024] Figure 5 It is a structural schematic view of the reinforcing assembly in the utility model;

[0025] Figure 6 It is a structural schematic view of another embodiment of the building structure reinforcing device of the utility model;

[0026] Figure 7 It is a structural schematic view of the reinforcing assembly in another embodiment of the utility model.

[0027] In the drawings, the component list represented by each sign is as follows:

[0028] 1, post; 2, mounting seat; 3, positioning frame; 4, threaded pipe; 5, bolt; 6, adjusting block; 7, adjusting groove; 8, mounting hole; 9, reinforcing plate; 10, stud; 11, nut; 12, wear pad; 13, reinforcing rib; 14, non-slip pad. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] In the description of the utility model, it should be understood that the terms "relative", "one end", "internal", "transverse", "end", "two ends", "two sides", "front", "one end surface", "the other end surface" and the like indicate the orientation or positional relationship, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] Example 1:

[0032] Please refer to Figures 1-5 As shown in the drawings, the utility model discloses a building structure reinforcing device, which comprises a post 1, mounting seats 2 are arranged on the two sides of the post 1, the mounting seat 2 is L-shaped, the front end surface and the rear end surface of the mounting seat 2 are fixedly connected with positioning frames 3, the positioning frame 3 is C-shaped, the positioning frame 3 is fixedly connected with threaded pipes 4, the threaded pipe 4 is communicated with the positioning frame 3, the threaded pipe 4 is screw-connected with bolts 5 matched with the threaded pipe 4, adjusting blocks 6 are inserted into the positioning frame 3, adjusting grooves 7 are formed in the surface of the adjusting block 6, the bolts 5 in the threaded pipe 4 can be screwed into the adjusting grooves 7 until the ends of the bolts 5 tightly abut against the groove bottoms of the adjusting grooves 7 by tightening the bolts 5, so that the adjusting blocks 6 are fixed in the positioning frames 3 by the mutual cooperation between the bolts 5 and the adjusting grooves 7, the two mounting seats 2 are connected and fixed by the mutual cooperation between the adjusting blocks 6 and the positioning frames 3, a plurality of mounting holes 8 are formed in the side wall of the mounting seat 2, and reinforcing assemblies are mounted on the mounting seat 2.

[0033] The reinforcing assembly comprises a reinforcing plate 9, one side of the reinforcing plate 9 is fixedly connected with a plurality of threaded studs 10, the threaded studs 10 are threadedly connected with nuts 11 matched therewith, when the threaded studs 10 pass through the corresponding mounting holes 8, the nuts 11 can be threadedly connected on the threaded studs 10 and tightened, at this time, the reinforcing assembly can be fixed on the mounting seat 2 through the cooperation of the threaded studs 10, the mounting holes 8 and the nuts 11, and the reinforcing assembly can be removed from the mounting seat 2 by unscrewing the nuts 11, so that the reinforcing assembly of the corresponding shape can be replaced according to the different shapes of the column 1, without the need to re-customize the entire reinforcing device, thereby effectively expanding the application range of the entire reinforcing device, and when the reinforcing assembly is worn or deformed due to long-term use, the reinforcing assembly can also be replaced individually, without the need to replace the entire reinforcing device, thereby effectively reducing the cost and avoiding waste, which is conducive to energy saving and environmental protection.

[0034] Among them, the column 1 is square, and the side away from the threaded studs 10 of the reinforcing plate 9 is a plane, the plane of the reinforcing plate 9 can be attached to the side wall of the square column 1, at this time, the square column 1 can be reinforced by the reinforcing assembly.

[0035] Among them, the surface of the side away from the threaded studs 10 of the reinforcing plate 9 is provided with a layer of wear-resistant pad 12, the wear-resistant pad 12 can be made of elastic materials such as rubber and fixed by glue, when the reinforcing plate 9 is attached to the side wall of the column 1, the wear-resistant pad 12 can play a protective effect against wear and tear, so as to avoid collision and wear between the column 1 and the reinforcing plate 9.

[0036] Among them, the number of threaded studs 10 is the same as that of mounting holes 8, the diameter of the threaded studs 10 corresponds to the hole diameter of the mounting holes 8, and the center of each threaded stud 10 corresponds to the center of each mounting hole 8, each threaded stud 10 can be aligned and pass through the corresponding mounting hole 8, at this time, the cooperation between the threaded studs 10 and the mounting holes 8 can play a limiting role, so as to improve the stability of the reinforcing assembly after installation, thereby preventing loosening during use and affecting the reinforcing effect on the building structure.

[0037] Among them, the adjusting block 6 is rectangular, the width of the adjusting block 6 corresponds to the width of the inner wall of the positioning frame 3, the adjusting groove 7 is rectangular, the groove width of the adjusting groove 7 corresponds to the inner diameter of the threaded tube 4, the adjusting block 6 can be attached to the inner wall of the positioning frame 3 and moved left and right along the positioning frame 3, at this time, the bolt 5 can be screwed into different positions in the adjusting groove 7, so as to change the distance between the two mounting seats 2, thereby the position of the reinforcing assembly can be adjusted according to the different sizes of the column 1, the entire adjusting process is very convenient, without consuming a lot of manpower and time.

[0038] The side wall of the mounting seat 2 is fixedly connected with a pair of reinforcing ribs 13, the reinforcing ribs 13 are triangular, the bottom of the reinforcing ribs 13 is fixedly connected with the bottom of the mounting seat 2, and the reinforcing ribs 13 are symmetrically distributed about the mounting holes 8, the mounting seat 2 can be reinforced through the reinforcing ribs 13, so that the structural strength of the mounting seat 2 is improved, and the mounting seat 2 is prevented from being bent and deformed after being stressed for a long time.

[0039] The bottom surface of the mounting seat 2 is provided with a plurality of anti-skid pads 14, the anti-skid pads 14 are long strips and are linearly distributed at equal intervals along the length direction of the bottom of the mounting seat 2, and the surface of the anti-skid pad 14 is provided with a herringbone anti-skid pattern, when the reinforcing device is installed on the ground, the anti-skid pattern on the surface of each anti-skid pad 14 can increase the friction between the mounting seat 2 and the ground, so as to play an anti-skid role, thereby effectively preventing the reinforcing device from slipping and moving during use and affecting the normal reinforcement of the stand column 1.

[0040] Embodiment 2:

[0041] Please refer to Figures 6-7 As shown in the figure, the utility model discloses a building structure reinforcing device, including stand column 1, the both sides of stand column 1 are provided with mounting seat 2, and mounting seat 2 is L-shaped, and the front end surface and rear end surface of mounting seat 2 are fixedly connected with positioning frame 3, positioning frame 3 is C-shaped, and positioning frame 3 is fixedly connected with threaded tube 4, threaded tube 4 is communicated with positioning frame 3, and threaded tube 4 is screw threadedly connected with bolt 5 matched therewith in it, and positioning frame 3 is inserted with adjusting block 6, and the surface of adjusting block 6 is provided with adjusting groove 7, by screwing bolt 5 in threaded tube 4, it can be rotated into adjusting groove 7 until the end of bolt 5 is tightly abutted on the groove bottom of adjusting groove 7, so as to be fixed in positioning frame 3 through the mutual cooperation between bolt 5 and adjusting groove 7, when the mutual cooperation between adjusting block 6 and positioning frame 3 can be connected and fixed two mounting seat 2, the side wall of mounting seat 2 is provided with a plurality of mounting holes 8, and mounting seat 2 is provided with reinforcing assembly on it.

[0042] The reinforcing assembly includes reinforcing plate 9, and the side of reinforcing plate 9 is fixedly connected with a plurality of stud bolts 10, and the stud bolts 10 are screw threadedly connected with nut 11 matched therewith, when stud bolt 10 passes through corresponding mounting hole 8, nut 11 can be screw threadedly connected on each stud bolt 10 and be tightened, when the mutual cooperation between stud bolt 10, mounting hole 8 and nut 11 can be fixed on mounting seat 2, by unscrewing nut 11, the reinforcing assembly can be disassembled from mounting seat 2, so as to replace the reinforcing assembly of corresponding shape according to the different shape of stand column 1, without reordering the whole reinforcing device, so as to effectively expand the application range of the whole reinforcing device, and when the reinforcing assembly is abraded or deformed after long time use, the reinforcing assembly can be replaced individually, without replacing the whole reinforcing device, so as to effectively reduce the cost, avoid waste, be conducive to energy conservation and environmental protection.

[0043] Wherein, the column 1 is circular, the arc-shaped surface of the reinforcing plate 9 away from the stud 10 can be attached to the sidewall of the circular column 1, and the reinforcing assembly can reinforce the circular column 1 at this time.

[0044] Wherein, the surface of the reinforcing plate 9 away from the stud 10 is provided with a layer of wear-resistant pad 12, which can be made of elastic materials such as rubber and fixed by glue, and when the reinforcing plate 9 is attached to the sidewall of the column 1, the wear-resistant pad 12 can play a protective effect to avoid collision and wear caused by direct contact between the column 1 and the reinforcing plate 9.

[0045] Wherein, the stud 10 is the same as the number of mounting holes 8, the diameter is equal to the hole diameter of the mounting hole 8, and the center of each stud 10 corresponds to the center of each mounting hole 8, and each stud 10 can be aligned and passed through the corresponding mounting hole 8, at this time, the mutual cooperation between the plurality of studs 10 and the mounting holes 8 can play a limiting role, in order to improve the stability of the reinforcing assembly after installation, so as to prevent it from loosening during use and affecting the reinforcing effect on the building structure.

[0046] Wherein, the adjusting block 6 is rectangular, its width is equal to the width of the inner wall of the positioning frame 3, and the adjusting groove 7 is rectangular, its groove width is equal to the inner diameter of the threaded tube 4, the adjusting block 6 can be attached to the inner wall of the positioning frame 3 and move left and right along the positioning frame 3, at this time, the bolt 5 can be screwed into different positions in the adjusting groove 7, in order to change the distance between the two mounting seats 2, so that the position of the reinforcing assembly can be adjusted according to the different sizes of the column 1, the whole adjusting process is very convenient, without consuming a lot of manpower and time.

[0047] Wherein, the sidewall of the mounting seat 2 is fixedly connected with a pair of reinforcing ribs 13, the reinforcing rib 13 is triangular, the bottom is fixedly connected to the bottom of the mounting seat 2, and the reinforcing rib 13 is symmetrically distributed about each mounting hole 8, the reinforcing rib 13 can reinforce the mounting seat 2, so as to improve the structural strength of the mounting seat 2, thereby preventing it from bending and deforming after long time stress.

[0048] Wherein, the bottom surface of the mounting seat 2 is provided with a plurality of anti-skid pads 14, the anti-skid pad 14 is long strip-shaped and linearly distributed at equal intervals along the length direction of the bottom of the mounting seat 2, and the surface of the anti-skid pad 14 is provided with a chevron-shaped anti-skid pattern, when the reinforcing device is installed on the ground, the anti-skid pattern on the surface of each anti-skid pad 14 can increase the friction between the mounting seat 2 and the ground, so as to play a role of anti-skid, thereby effectively preventing the reinforcing device from slipping and displacing during use and affecting the normal reinforcement of the column 1.

[0049] The standard parts used in the application file can be purchased from the market, all the parts in the application file can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, and the mechanical parts and equipment adopt the conventional type in the prior art.

[0050] The working principle of the utility model is:

[0051] In use, first, the reinforcing assembly is fixed on the mounting seat 2 through the cooperation of the stud 10, the mounting hole 8 and the nut 11, the reinforcing assembly can be selected according to the shape of the stand 1, when the stand 1 is square, the reinforcing plate 9 is selected as a flat reinforcing assembly (such as embodiment 1), and when the stand 1 is circular, the reinforcing plate 9 is selected as an arc-shaped reinforcing assembly (such as embodiment 2), after the selection is completed, the two mounting seats 2 are respectively close to the two sides of the stand 1, until the reinforcing plates 9 in the two reinforcing assemblies are respectively attached to the two side walls of the stand 1, the adjusting block 6 is inserted into the positioning frame 3, and the bolt 5 in the threaded tube 4 is screwed into the adjusting groove 7 until the end of the bolt 5 tightly abuts against the groove bottom of the adjusting groove 7, so as to fix the adjusting block 6 in the positioning frame 3 through the cooperation between the bolt 5 and the adjusting groove 7, at this time, the two mounting seats 2 can be connected and fixed through the cooperation between the adjusting block 6 and the positioning frame 3, the adjusting block 6 can be attached to the inner wall of the positioning frame 3 and move left and right along the positioning frame 3, at this time, the bolt 5 can be screwed into different positions in the adjusting groove 7, so as to change the distance between the two mounting seats 2, thereby the position of the reinforcing assembly can be adjusted according to the stand of different sizes, after the adjustment is completed, the stand 1 can be reinforced by the reinforcing assembly, the reinforcing assembly can be disassembled from the mounting seat 2 by unscrewing the nut 11, so as to replace the reinforcing assembly of the corresponding shape according to the different shapes of the stand 1, without the need of reordering, thereby the application range of the entire reinforcing device is effectively expanded, and when the reinforcing assembly is worn or deformed due to long-term use, the reinforcing assembly can also be replaced individually, without the need of replacing the entire reinforcing device, thereby the cost is effectively reduced, waste is avoided, energy saving and environmental protection are facilitated.

[0052] The preferred embodiments of the utility model disclosed above are only used for helping to describe the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific implementation modes. Apparently, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments, so as to better explain the principle and practical application of the utility model, and enable the person skilled in the art to well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A building structure reinforcing device characterized by comprising: The utility model provides a kind of column, the both sides of the column are provided with mounting seat, the mounting seat is L-shaped, its front end surface and rear end surface are fixedly connected with positioning frame, the positioning frame is C-shaped, and the positioning frame is fixedly connected with threaded tube, the threaded tube is communicated with positioning frame, and the threaded tube is screw-threaded with the bolt matched therewith in it, the positioning frame is inserted with adjusting block, the surface of the adjusting block is provided with adjusting groove, the side wall of the mounting seat is provided with several mounting holes, and the mounting seat is installed with reinforcing assembly. The reinforcing assembly includes a reinforcing plate, and the reinforcing plate is fixedly connected with a plurality of studs on one side.

2. A building structure reinforcing device according to claim 1, wherein The column is square, and the side of the reinforcing plate away from the stud is a plane.

3. A building structure reinforcing device according to claim 1, wherein The surface of the side of the reinforcing plate away from the stud is provided with a layer of wear-resistant pad.

4. A building structure reinforcing device according to claim 1, wherein The number of the stud is the same as that of the mounting hole, the diameter of the stud corresponds to the hole diameter of the mounting hole, and the center of each stud and the center of each mounting hole one-to-one correspond.

5. The building structure reinforcing device according to claim 1, wherein The adjusting block is rectangular, and the width of the adjusting block corresponds to the width of the inner wall of the positioning frame.

6. A building structure reinforcing device according to claim 1, wherein The side wall of the mounting seat is fixedly connected with a pair of reinforcing ribs, the reinforcing rib is triangular, the bottom of the reinforcing rib is fixedly connected to the bottom of the mounting seat, and the reinforcing rib is symmetrically distributed about each mounting hole.

7. A building structure reinforcing device according to claim 1, wherein The bottom surface of the mounting seat is provided with a plurality of anti-skid pads, the anti-skid pad is long strip-shaped, and is linearly distributed at equal distances along the length direction of the bottom of the mounting seat, and the surface of the anti-skid pad is provided with a chevron-shaped anti-skid pattern.

Citation Information

Patent Citations

  • Building structure reinforcing device

    CN210622363U