CN111206595B - Foundation pit steel pipe connecting device - Google Patents
Foundation pit steel pipe connecting device Download PDFInfo
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- CN111206595B CN111206595B CN202010086710.6A CN202010086710A CN111206595B CN 111206595 B CN111206595 B CN 111206595B CN 202010086710 A CN202010086710 A CN 202010086710A CN 111206595 B CN111206595 B CN 111206595B
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- limiting
- steel pipe
- iron sheet
- thick iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end relation
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a foundation pit steel pipe connecting device which comprises a thick iron sheet and a limiting structure, wherein the limiting structure is arranged on the thick iron sheet and integrally formed with the thick iron sheet, the limiting structure is integrally cylindrical, one thick iron sheet and one limiting structure form a component unit, the limiting structure comprises a limiting cylinder, a limiting column, a limiting block and a bolt, the limiting cylinder wraps the limiting column, the limiting cylinder comprises two arc plates, an expansion joint is reserved at the joint of the two arc plates and used for stretching the diameter of the limiting cylinder, two limiting blocks are oppositely arranged on the side surface of the limiting cylinder, the bolt is arranged in the limiting block, and the limiting blocks are used for connecting the two unconnected arc plates; the stability of braced system is improved, and prevents that the component part from droing, can observe whether the end of inside steel pipe takes place the slope through the inspection chamber, in time gets rid of the potential safety hazard, utilizes spacing section of thick bamboo and spacing post, strengthens the overall stability that the steel pipe supported.
Description
Technical Field
The invention relates to the technical field of building tools, in particular to a foundation pit steel pipe connecting device.
Background
The foundation pit refers to a space below the ground excavated for the construction of a building (including a structure) foundation and a basement;
when the foundation pit is deep, soil layers on the side face of the foundation pit collapse to different degrees, so a building enclosure is needed to avoid the collapse of the soil layers on the side face of the foundation pit, and steel pipe support is a form, and specifically, support piles or continuous walls are firstly arranged on two sides of the foundation pit, then steel pipes are used for supporting the piles or the walls on the two sides, a plurality of rows of steel pipe supports can be used, during construction, soil is excavated to the elevation of the supports, then the supports are made, and the supports are made to continue to excavate soil downwards;
and the foundation pit support is defined by the industry standard of the people's republic of China "technical code for building foundation pit support" JGJ120-2012 as follows: in order to protect the safety of the construction of the underground main body structure and the surrounding environment of the foundation pit, the foundation pit adopts the measures of temporary retaining, reinforcing, protecting and underground water controlling;
when the steel pipe support is used, because the length of the steel pipe is limited, and the support area is large, a plurality of steel pipes are often required to be connected and matched with each other to form a support system;
common fasteners are: the novel fastener, the steel pipe scaffold fastener, the cast steel fastener, the T-shaped building fastener, the concrete sleeper fastener, the wood sleeper fastener, the steel rail fastener, the Foss rod fastener, the malleable steel fastener, the scaffold fastener, the railway fastener, the steel plate stamping fastener, the butt joint fastener, the rotating fastener and the right-angle fastener;
the steel fasteners are generally divided into cast steel fasteners, steel plate stamping fasteners and hydraulic fasteners, the production process of the cast steel fasteners is approximately the same as that of cast iron, and the steel plate stamping fasteners and the hydraulic fasteners are formed by stamping and hydraulic technology through steel plates with the thickness of 3.5-5 mm. The steel fastener has excellent properties, such as fracture resistance, sliding resistance, deformation resistance, falling resistance, rust resistance and the like. At present, the largest cast iron fastener manufacturers in China concentrate on the Hebei Cangzhou area, and the market share is about 80 percent; the market share of the steel fasteners is about 5-10%, and the main manufacturers are distributed in Hebei, Chongqing, Xinjiang and the like;
however, the existing foundation pit supporting form of steel pipe support has the following problems:
1. when the fasteners are used for connecting steel pipes, the vertical pipes are not long enough, the connecting fasteners are usually required to be placed at the top end of one vertical pipe and connected with the bottom end of the other vertical pipe, however, when the pressure of the foundation pit is responded, the relative positions of the two connected vertical pipes can deviate more or less, namely, the axes of the two connected vertical pipes are not on the same straight line, at the moment, the connecting fasteners can incline more or less, so that the stability of the steel pipe support is adversely affected, the risk of collapse of a steel pipe support system is caused, and the life safety of operators is threatened;
2. because most of the existing connecting fasteners are steel fasteners, and the joint of one steel pipe and the other steel pipe is often completely wrapped in the connecting fastener, the condition of the joint of the steel pipes in the fastener cannot be seen in appearance, and the joint between a plurality of steel pipes cannot be visually observed, so that potential safety hazards are eliminated;
3. present connection fastener self is stable inadequately, because bolt on the current cross fastener inserts and establishes the fastener and lead to the inslot, when dismantling, often can make bolt wherein fall out, and need relapse when using realize opening and shutting of fastener around leading to the groove rotation with the bolt, the screw thread of bolt can be worn and torn up long time, thereby make its stability reduce, because the bolt of fastener deviates from in the spout easily, so when construction unit is under construction, the fastener often leases from other companies with the steel pipe, construction cost has been improved in the damage of fastener.
Disclosure of Invention
In order to solve the problems, the invention discloses a foundation pit steel pipe connecting device, after steel pipes are connected by using the device, the stability of a supporting system can be ensured, the device is installed at the end of the steel pipe, the installation and the disassembly are simple and easy, and a bolt on the device is limited in a limiting block, so that the stability of the device is stronger, the condition that component parts fall off cannot occur, an inspection cavity arranged below a low arc plate can observe whether the end of the inner steel pipe inclines or not, the stability of the whole steel pipe support is judged, potential safety hazards are timely eliminated, a limiting cylinder and a limiting column are utilized, double insurance is realized, the centers of two interconnected steel pipes are fixed on the same straight line, and the overall stability of the steel pipe support is enhanced.
In order to achieve the above purpose, the invention provides the following technical scheme:
a foundation pit steel pipe connecting device comprises a thick iron sheet and a limiting structure, wherein the limiting structure is installed on the thick iron sheet and integrally formed with the thick iron sheet, the whole limiting structure is a cylinder, and one thick iron sheet and one limiting structure form a component unit; the limiting structure comprises a limiting cylinder, a limiting column, limiting blocks and bolts, wherein the limiting column is installed on a thick iron sheet, the limiting cylinder wraps the limiting column and is installed on the thick iron sheet, the axis of the limiting column coincides with the axis of the limiting cylinder, the diameter of the limiting column is smaller than the diameter of an inner cylinder of the limiting cylinder, namely, an interval for accommodating a steel pipe is reserved between the limiting column and the limiting cylinder, the limiting cylinder consists of two arc plates, a gap is reserved between the two arc plates, the gap is an expansion joint for loosening or biting the steel pipe inserted into the gap, the outer wall of the limiting cylinder is relatively provided with the two limiting blocks, the limiting blocks are arranged on the outer walls of the two arc plates and are connected with the two arc plates, the limiting blocks are separated by the expansion joint, and the bolts are arranged in the limiting blocks;
the two arc plates consist of a high arc plate and a low arc plate, the bottom end of the low arc plate is not contacted with the thick iron sheet and is arranged 2-3CM away from the surface of the thick iron sheet, the bottom end of the high arc plate is fixed on the surface of the thick iron sheet and is integrally formed with the thick iron sheet, the top surface of the low arc plate is not higher than the top surface of the high arc plate, namely, a gap between the low arc plate and the thick iron sheet is an inspection cavity, and the inspection cavity can directly see the limit column;
the component units can be spliced into a Z shape or a plum blossom shape;
the Z-shaped structure comprises: integrally pouring and molding the two thick iron sheets, and arranging the limiting structures in a central symmetry mode when facing steel pipes with larger space or needing dislocation connection;
the plum blossom type: at the position of the foundation pit with larger stress, the steel pipes are connected into an integrated column by utilizing the component units spliced into the plum blossom shape.
As a further description of the above technical solution:
the limiting block is internally provided with a limiting hole in a penetrating mode, the inner wall of the limiting hole is uniformly provided with threads in a winding mode, and the threads are used for fixing the bolt.
As a further description of the above technical solution:
the bottom end of the bolt can not enter the limiting hole, namely, the bottom end of the bolt is provided with a baffle ring with the diameter larger than that of the limiting hole.
As a further description of the above technical solution:
the plurality of component units can be spliced into a Z shape or a plum blossom shape.
As a further description of the above technical solution:
the limiting block and the limiting cylinder are integrally formed.
As a further description of the above technical solution:
the limiting block and the limiting barrel are both made of stainless steel.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the limiting column is inserted into the steel pipe by utilizing the matching of the limiting column and the limiting cylinder, the limiting cylinder completely wraps the steel pipe, and the limiting cylinder on the outer wall of the steel pipe is clamped, so that the pressure between the inner wall of the steel pipe and the limiting column is increased, the friction force is increased, and the stability of the steel pipe supporting system is improved;
2. the bottom end of the bolt is abutted to the tail end of the limiting block by the retaining ring, so that the bolt cannot be screwed out of the limiting block, the short arc plate cannot fall off from the high arc plate, the stability of the device is ensured, and parts of the device cannot fall off, so that the problem that component parts fall off is not solved when the device is mounted and dismounted, the dismounting efficiency is higher, the construction efficiency is improved, and the construction cost is saved;
3. the inspection chamber of utilizing to set up in short arc below can be audio-visual sees through the inspection chamber whether steel pipe bottom contacts completely with thick iron sheet surface, can audio-visual this device of judgement and the relative position relation of steel pipe, observes whether the end of inside steel pipe takes place the slope to judge the stability that whole steel pipe supported, in time get rid of the potential safety hazard, thereby guaranteed whole steel pipe braced system's stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of an entire foundation pit steel pipe connecting device;
FIG. 2 is a side view;
FIG. 3 is a top view;
FIG. 4 is a schematic view of a first assembly method;
FIG. 5 is a schematic view of a usage state;
fig. 6 is a schematic diagram of a second combination method.
The labels in the figure are: 1-thick iron sheet, 2-limiting structure, 201-limiting cylinder, 202-limiting column, 203-limiting block, 204-bolt, 211-expansion joint, 212-high arc plate, 213-low arc plate, 214-inspection cavity and 3-steel tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment is a structure of a foundation pit steel pipe 3 connecting device, as shown in fig. 1, fig. 2 and fig. 3, the structure comprises a thick iron sheet 1 and a limiting structure 2, the limiting structure 2 is installed on the thick iron sheet 1, the limiting structure 2 and the thick iron sheet 1 are integrally formed, the whole limiting structure 2 is a cylinder, one thick iron sheet 1 and one limiting structure 2 form a component unit, the limiting structure 2 comprises a limiting cylinder 201, a limiting column 202, a limiting block 203 and a bolt 204, the limiting column 202 is installed on the thick iron sheet 1, the limiting cylinder 201 wraps the limiting column 202 and installs the limiting column 202 on the thick iron sheet 1, the axis of the limiting column 202 coincides with the axis of the limiting cylinder 201, the diameter of the limiting column 202 is smaller than the inner cylinder diameter of the limiting cylinder 201, namely, a space for accommodating the steel pipe 3 is left between the limiting column 202 and the limiting cylinder 201, the limiting cylinder 201 is composed of two arc plates, a gap is reserved between the two arc plates, the gap is an expansion joint 211 to loosen or fasten the steel pipe 3 inserted into the gap, the outer wall of the limiting cylinder 201 is relatively provided with two limiting blocks 203, the limiting blocks 203 are arranged on the outer walls of the two arc plates and connect the two arc plates, the limiting blocks 203 are separated by the expansion joint 211, and bolts 204 are arranged in the limiting blocks 203;
further, the two arc plates are composed of a high arc plate 212 and a low arc plate 213, the bottom end of the low arc plate 213 is not in contact with the thick iron sheet 1 and is arranged 2-3CM away from the surface of the thick iron sheet 1, the bottom end of the high arc plate 212 is fixed on the surface of the thick iron sheet 1 and is integrally formed with the thick iron sheet 1, the top surface of the low arc plate 213 is not higher than the top surface of the high arc plate 212, namely, a gap between the low arc plate 213 and the thick iron sheet 1 is an inspection cavity 214, the inspection cavity 214 can directly see the limiting column 202, a limiting hole penetrates through the limiting block 203, threads are uniformly wound on the inner wall of the limiting hole and are used for fixing the bolt 204, the bottom end of the bolt 204 cannot enter the limiting hole, namely, a retaining ring with a diameter larger than that of the limiting hole is arranged at the bottom end of the bolt 204;
the high observation cavity of 2-3CM is to guarantee the whole stability of the limit structure 2, and the condition between the bottom end of the steel pipe 3 and the thick iron sheet 1 can be visually observed;
preferably, the limiting block 203 and the limiting cylinder 201 are integrally formed, and both the limiting block 203 and the limiting cylinder 201 are made of stainless steel;
in order to solve the problems that when a fastener is used for connecting steel pipes 3, because the vertical pipes are not long enough, a connecting fastener is often required to be placed at the top end of one vertical pipe and connected with the bottom end of the other vertical pipe, when the pressure of a foundation pit side is responded, the relative positions of the two connected vertical pipes can deviate more or less, namely the axes of the two connected vertical pipes are not on the same straight line any more, at the moment, the connecting fastener inclines more or less, so that the stability of the support of the steel pipes 3 is adversely affected, the risk of collapse of a support system of the steel pipes 3 is caused, and the life safety of operating personnel is threatened, and because the existing connecting fastener is mostly a steel fastener, and the joint of one steel pipe 3 and the other steel pipe 3 is often completely wrapped in the connecting fastener, in appearance, the condition of the joint of the steel pipes 3 in the fastener cannot be seen, and the joint between the steel pipes 3 cannot be visually observed, therefore, potential safety hazards are eliminated, the existing connecting fastener is not stable enough, the bolts 204 on the existing cross fastener are inserted into the through grooves of the fastener, when the connecting fastener is disassembled, the bolts 204 in the existing cross fastener often fall out, the bolts 204 need to rotate around the through grooves repeatedly to open and close the fastener when the connecting fastener is used, threads of the bolts 204 are abraded over time, the stability of the connecting fastener is reduced, the bolts 204 of the fastener are easy to fall out of the through grooves, when a construction unit conducts construction, the fastener and the steel pipe 3 are often leased from other companies, and the damage of the fastener improves the construction cost;
the working principle of the device is further explained below with reference to fig. 4, 5 and 6:
because one component unit comprises one or more limiting structures 2, and a plurality of component units can be spliced into a Z shape or a quincunx shape;
z-shaped:
when manufacturing, the two thick iron sheets 1 are integrally cast, when facing a steel pipe 3 with a larger distance or needing to be connected in a staggered manner, the limiting structures 2 are arranged in a central symmetry manner, namely the two limiting structures 2 and the thick iron sheets 1 form a Z shape, after the bolt 204 is unscrewed, the steel pipe 3 is inserted into the limiting cylinder 201, the steel pipe 3 is inserted into the periphery of the limiting column 202, the bolt 204 is screwed after the steel pipe 3 is inserted into the limiting cylinder 201 through the observation cavity, the limiting block 203 pulls the short arc plate 213 to the high arc plate 212, namely the expansion joint 211 is reduced, the steel pipe 3 is extruded by the high arc plate 212 and the short arc plate 213, so that the steel pipe 3 is fixed in the limiting cylinder 201, and another steel pipe 3 is installed in another limiting structure 2 by repeating the steps, thereby connecting the two steel pipes 3;
preferably, the surface of the limiting column 202 and the inner wall of the limiting cylinder 201 are frosted surfaces, so that the direct friction between the steel pipe 3 and the limiting structure 2 is increased;
therefore, the matching of the limiting column 202 and the limiting cylinder 201 is utilized, the limiting column 202 is inserted into the steel pipe 3, the limiting cylinder 201 completely wraps the steel pipe 3, the limiting cylinder 201 on the outer wall of the steel pipe 3 is clamped, so that the pressure between the inner wall of the steel pipe 3 and the limiting column 202 is increased, the friction force is increased, and the stability of the steel pipe 3 supporting system is improved;
during disassembly, the bottom end of the bolt 204 is abutted to the tail end of the limiting block 203 by the retaining ring, so that the bolt 204 cannot be screwed out of the limiting block 203, the short arc plate 213 cannot fall off from the high arc plate 212, the stability of the device is ensured, and parts of the device cannot fall off, so that the problem that component parts fall off is avoided during assembly and disassembly of the device, the disassembly efficiency is higher, the construction efficiency is improved, and the construction cost is saved;
plum blossom type:
at the foundation pit part with larger stress, the steel pipes 3 are connected into an integrated column by utilizing quincunx components, so that the shearing resistance of the integrated column is improved, and the stability of a steel pipe 3 supporting system is improved to a certain extent;
in the in-process of daily inspection, utilize the inspection chamber 214 that sets up in short arc board 213 below, through inspection chamber 214 can be audio-visual see steel pipe 3 bottom and thick iron sheet 1 surface whether contact completely, can audio-visual this device of judgement and steel pipe 3's relative position relation, whether the end of observing inside steel pipe 3 takes place the slope to judge the stability that whole steel pipe 3 supported, in time get rid of the potential safety hazard, thereby guaranteed whole steel pipe 3 braced system's stability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a foundation ditch steel pipe connecting device which characterized in that: the steel plate comprises a thick iron sheet (1) and a limiting structure (2), wherein the limiting structure (2) is arranged on the thick iron sheet (1), the limiting structure (2) and the thick iron sheet (1) are integrally formed, the whole limiting structure (2) is a cylinder, and one thick iron sheet (1) and one limiting structure (2) form a component unit;
the limiting structure (2) comprises a limiting cylinder (201), a limiting column (202), limiting blocks (203) and bolts (204), wherein the limiting column (202) is installed on the thick iron sheet (1), the limiting cylinder (201) wraps the limiting column (202) and is installed on the thick iron sheet (1), the axis of the limiting column (202) coincides with the axis of the limiting cylinder (201), the diameter of the limiting column (202) is smaller than the diameter of an inner cylinder of the limiting cylinder (201), namely, an interval for accommodating the steel pipe (3) is reserved between the limiting column (202) and the limiting cylinder (201), the limiting cylinder (201) consists of two arc plates, a gap is reserved between the two arc plates, the gap is an expansion joint (211), the steel pipe (3) inserted into the expansion joint is loosened or gripped, the outer wall of the limiting cylinder (201) is relatively provided with the two limiting blocks (203), and the limiting blocks (203) are arranged on the outer walls of the two arc plates and are connected with the two arc plates, the limiting block (203) is isolated by an expansion joint (211), and a bolt (204) is arranged in the limiting block (203);
the two arc plates consist of a high arc plate (212) and a low arc plate (213), the bottom end of the low arc plate (213) is not in contact with the thick iron sheet (1) and is arranged 2-3CM away from the surface of the thick iron sheet (1), the bottom end of the high arc plate (212) is fixed on the surface of the thick iron sheet (1) and is integrally formed with the thick iron sheet (1), the top surface of the low arc plate (213) is not higher than that of the high arc plate (212), namely, a gap between the low arc plate (213) and the thick iron sheet (1) is an inspection cavity (214), and the limit column (202) can be directly seen from the inspection cavity (214);
the component units can be spliced into a Z shape or a plum blossom shape;
the Z-shaped structure comprises: the two thick iron sheets (1) are integrally cast and formed, and the limiting structures (2) are arranged in a central symmetry mode when facing steel pipes (3) with larger spacing or needing dislocation connection;
the plum blossom type: at the position of a foundation pit with larger stress, the steel pipes (3) are connected into an integrated column by utilizing the component units spliced into a quincunx shape.
2. A foundation pit steel pipe connecting device according to claim 1, characterized in that: the limiting block (203) is internally provided with a limiting hole in a penetrating mode, the inner wall of the limiting hole is uniformly wound with threads, and the threads are used for fixing the bolt (204).
3. A foundation pit steel pipe connecting device according to claim 1, characterized in that: the bottom end of the bolt (204) can not enter the limiting hole, namely, the bottom end of the bolt (204) is provided with a retaining ring with the diameter larger than that of the limiting hole.
4. A foundation pit steel pipe connecting device according to claim 2, characterized in that: the limiting block (203) and the limiting cylinder (201) are integrally formed.
5. A foundation pit steel pipe connecting device according to claim 1, characterized in that: the limiting block (203) and the limiting barrel (201) are both made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010086710.6A CN111206595B (en) | 2020-02-11 | 2020-02-11 | Foundation pit steel pipe connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010086710.6A CN111206595B (en) | 2020-02-11 | 2020-02-11 | Foundation pit steel pipe connecting device |
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| Publication Number | Publication Date |
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| CN111206595A CN111206595A (en) | 2020-05-29 |
| CN111206595B true CN111206595B (en) | 2022-03-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203892748U (en) * | 2014-05-04 | 2014-10-22 | 成都辉腾塑胶有限公司 | Pipeline connecting flange |
| JP6412408B2 (en) * | 2014-11-02 | 2018-10-24 | 有限会社新光工業 | Connecting jig |
| CN205298830U (en) * | 2016-01-21 | 2016-06-08 | 哈尔滨斯特莱茵环境科技有限公司 | Handle clamp |
| CN207297537U (en) * | 2017-09-09 | 2018-05-01 | 安徽金华亿科技发展有限公司 | A kind of attachment device of steel pipe |
| CN208919507U (en) * | 2018-07-24 | 2019-05-31 | 山东陆宇塑胶工业有限公司 | A kind of steel modeling transitional product from cuff structure |
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