CN111236539A - A steel connecting device - Google Patents

Abstract

The invention discloses a steel bar connection device, which belongs to the technical field of steel bar connection. Including the steel bar connection sleeve, the left port of the steel bar connection sleeve is the steel bar insertion hole, and the right side of the steel bar insertion hole is connected to the steel bar fixing connection cavity, the compression spring accommodating cavity and the inner thread hole in turn from left to right, and the steel bar fixing connection cavity is the left port. The conical cavity is smaller than the right port; the rebar clamp assembly is installed in the conical cavity, the rebar clamp assembly compression spring is arranged in the compression spring accommodating cavity, and the threaded connector is screwed in the inner threaded hole, and the rebar clamp assembly includes A set of clamp connecting pieces, the inner wall of each clamp connecting piece ring steel fixed connection cavity is arranged circumferentially, and the inner side wall of each clamp connecting piece is a circular arc surface located on the same axis line, and is in the circular arc. There are steel bar occlusal teeth on the surface, and the outer side wall of the clamp connecting piece has a tapered surface that matches the inner wall taper of the steel bar fixing connection cavity. It has the characteristics of high steel connection strength, strong adaptability and convenient operation.

Description

A steel connecting device

technical field

The invention relates to the technical field of steel bar connection.

Background technique

There are three main ways of connecting steel bars: lashing, mechanical connection, and welding.

Binding and lap joint: the method of fixing the overlapping part of the steel bar joint by tying. This method not only requires a long overlapping part, which leads to waste of material. It is not suitable to select the same position for different lap joint positions of the steel bar. Therefore, the main disadvantage of the binding method is the use of steel Too much, poor force transmission performance

Welded connection: There are several methods for welded connection of steel bars, such as flash butt welding, arc welding, electroslag pressure welding, gas pressure welding and submerged arc pressure welding of embedded steel bars. The main disadvantage is that special construction equipment, materials and electricity are required, the energy consumption is the largest, and the requirements for personnel are strict, and there are certain requirements for the construction environment. Butt welding and air pressure welding can only weld and connect steel bars of limited length in the processing field, and the quality cannot be fully guaranteed, and it is easy to produce unqualified products and waste a lot.

Mechanical connection: It is connected by straight thread, tapered thread, sleeve extrusion, etc., and it is rarely used now because of the backlog of sleeve and the unstable quality of the tapered thread connection and the insufficient force of the joint. Straight threaded joints are used as the object of analysis and comparison. Straight thread mainly includes rough cutting straight thread connection. It is necessary to round the end of the steel bar, then thicken the pier, and then cut the thread. Due to the change in the structure and organization, and without tempering treatment, stress concentration will occur and ductility will decrease. Joint stress is unfavorable. There is also the extrusion rib rolling straight thread connection, which is relatively stable, but due to the large pressing tolerance of the steel bar itself, it is difficult to control the quality of the wire head processing, and the force conditions of the rolling wheel are poor and the service life is low.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a reinforcing bar connecting device, which has the characteristics of high reinforcing bar connecting strength, strong adaptability, convenient operation and the like.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is:

A reinforcing bar connecting device includes a reinforcing bar connecting sleeve, the left port of the reinforcing bar connecting sleeve is a reinforcing bar insertion hole, and the right side of the reinforcing bar inserting hole is connected to a reinforcing bar fixing connection cavity, a compression spring accommodating cavity and an inner thread hole in sequence from left to right, and the reinforcing bar The fixed connection cavity is a conical cavity whose left port is smaller than the right port; a steel bar clamp assembly is installed in the conical cavity, a steel bar clamp assembly compression spring is arranged in the compression spring accommodating cavity, and a threaded connector is screwed into the inner threaded hole , to push the compression spring of the rebar clamp assembly to press the rebar clamp assembly;

The steel bar clamp assembly includes a set of clamp connection pieces, each clamp connection piece is circumferentially arranged around the inner wall of the steel fixed connection cavity, and the inner side wall of each clamp connection piece is an arc-shaped surface located on the same axis line, and The circular arc surface is provided with steel bar occlusal teeth, and the outer side wall of the clamp connection piece has a tapered surface that matches the inner wall taper of the steel bar fixing connection cavity, so that the outer side wall of each clamp connection piece is annular When the arrangement is close to the inner wall of the steel bar fixing connection cavity, the inner side wall of each clamp connecting piece forms a cylindrical inner ring surface with an elastic gap. The enclosed cylindrical cavity is the steel bar holding and fixing cavity. When the threaded connection is tightened, the steel bar clamp assembly compression spring exerts a thrust on the steel bar clamp assembly to move it to the left, and the steel bar is fixed to the conical cavity of the connection cavity. The inner wall gradually guides each clamp connecting piece to the axial position of the steel bar fixing connection cavity, so that the diameter of the steel bar tightening and fixing cavity is gradually reduced. The steel bar bite teeth on the inner side wall of the connecting piece are embedded in the steel bar rib, so as to fix the steel bar in the steel bar fixing connection cavity.

The further improvement of the present invention is:

The reinforcing bar clamp assembly is provided with a clamp connection piece positioning structure for circumferentially arranging and axially positioning each clamp connection piece.

The positioning structure of the clamp connection piece is as follows: a limit groove is arranged on the inner side wall of each clamp connection piece, and each limit groove is arranged along the circumferential direction of the steel bar-clinching fixing sleeve, and is provided with a C-shaped ring that matches the limit groove. The C-shaped ring is embedded in the limit groove of each clamp connecting piece to position it in the steel fixing connection cavity, so that the inner wall of each clamp connecting piece ring steel fixing connecting cavity is arranged circumferentially.

The positioning structure of the clamp connection piece is: it includes two circular metal pieces whose diameters are adapted to the steel bar holding and fixing cavity and a circular piece magnet whose diameter is not larger than the diameter of the circular metal piece. The circular piece magnet is located in the two circles. Between the two circular metal sheets, each clamp connecting piece is arranged in a ring and is adsorbed on the round edges of the two circular metal sheets 9 by the disc magnets, so as to locate them in the fixed connection cavity of the steel bar, so that each clamp connecting piece is The inner wall of the ring reinforcement fixed connection cavity is arranged circumferentially.

The right end of the threaded connector is provided with an external threaded hole or an internal threaded hole for connecting other steel bar connecting devices.

There are four clamp connection pieces.

The beneficial effects produced by the above technical solutions are:

The steel bar fixing connection cavity of the device is a conical cavity whose left port is smaller than the right port, and the left and right movement of the steel bar clamp assembly can expand or shrink the steel bar holding sleeve, so that the tolerance difference between different manufacturers of steel bars is low, and the adaptability is good; When the steel bar is pulled in the opposite direction of the device, the steel bar drives the steel bar clamp assembly to move along the inner wall of the tapered cavity of the steel bar fixing connection cavity to the direction of small opening, so that the steel bar tightening and fixing sleeve is reduced, and the The occlusal teeth of the steel bars on the inner side wall are embedded in the steel ribs to increase the depth, thus ensuring the strength of the steel bar connection; insert the steel bar through the steel bar insertion hole, and tighten the threaded connector to fix the device and the steel bar, which is convenient to operate and save time for on-site construction. It is greatly shortened, and the steel bars can be connected in a short time, and the strength and quality can well meet the standard requirements.

It has the characteristics of high steel connection strength, strong adaptability and convenient operation.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of reinforcing bar connecting sleeve in Fig. 1;

Fig. 3 is the structural representation of the reinforcing bar clamp assembly in Fig. 1;

Fig. 4 is the structural representation of the clamp connecting piece in Fig. 1;

5 is a schematic structural diagram of the combination of a reinforcing bar clamp assembly and a clamp connecting piece positioning structure;

6 is a schematic structural diagram of the combination of a reinforcing bar clamp assembly and a clamp connecting piece positioning structure;

FIG. 7 is a schematic diagram of the structure of the present invention in use state.

In the drawings: 1. Rebar connecting sleeve; 2. Reinforcing hole; 3. Reinforcing connection cavity; 4. Compression spring accommodating cavity; 5. Internal thread hole; 6. Rebar clamp assembly compression spring; 7. Clamp Connecting piece; 7-1. The inner side wall of the clamp connecting piece; 7-1-1. The steel bar bites the teeth; 7-1-2. The limit groove; 7-2. The outer side wall of the clamp connecting piece; 8. C-ring; 9. Circular metal sheet; 10. Disc magnet; 11. Threaded connector; 12. Steel bar.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The standard parts used in the present invention can be purchased from the market, the special-shaped parts can be customized according to the description in the description and the drawings, and the specific connection methods of each part are all mature bolts, rivets, welding in the prior art. , pasting and other conventional means will not be described in detail here.

It can be seen from the embodiments shown in FIGS. 1 to 7 that this embodiment includes a steel bar connecting sleeve 1. The left port of the steel bar connecting sleeve 1 is a steel bar insertion hole 2, and the right side of the steel bar insertion hole 2 is connected to the steel bar from left to right. The connection cavity 3, the compression spring accommodating cavity 4 and the inner threaded hole 5, the steel bar fixing connection cavity 3 is a conical cavity whose left port is smaller than the right port; There is a compression spring 6 of the reinforcing bar clamp assembly, and the threaded connector 11 is screwed in the inner threaded hole 5 to push the reinforcing bar clamp assembly compression spring 6 to press the reinforcing bar clamp assembly;

The steel bar clamp assembly includes a set of clamp connection pieces 7, each clamp connection piece 7 is circumferentially arranged around the inner wall of the steel reinforcement connection cavity 3, and the inner side wall 7-1 of each clamp connection piece 7 is located on the same axis line. The arc-shaped surface of the steel bar is provided with rebar occlusal teeth 7-1-1, and the teeth are inclined to the direction of the compression spring of the rebar clamp assembly. When the rebar is pulled in the opposite direction, the teeth It will be embedded in the steel ribs, and the deeper the teeth are embedded, the more firmly the fixed steel bars are; When the outer side walls 7-2 of each clamp connecting piece 7 are arranged in a ring shape and closely adhered to the inner wall of the steel fixing connection cavity 3, the inner side wall 7-1 of each clamp connecting piece 7 forms a cylindrical inner ring with an elastic gap. The cylindrical inner ring surface is the steel bar holding and fixing sleeve, and the cylindrical cavity enclosed by the cylindrical inner ring surface is the steel bar holding and fixing cavity. When the steel bar clamp assembly exerts a thrust to move it to the left, the inner wall of the conical cavity of the steel bar fixing connection cavity 3 will gradually guide each clamp connecting piece 7 to the axial center position of the steel bar fixing connection cavity 3, so that the steel bar will hold the fixing cavity tightly. The diameter is gradually reduced, and the steel bar gripping and fixing sleeves hold the steel bars in the steel bar gripping and fixing cavity tightly. In order to fix the steel bar in the steel bar fixing connection cavity 3. The inner threaded hole at the right end of the steel connecting sleeve can be connected to other steel connecting devices.

The reinforcing bar clamp assembly is provided with a clamp connection piece positioning structure for circumferentially arranging and axially positioning each clamp connection piece.

The positioning structure of the clamp connecting piece is as follows: the inner side wall 7-1 of each clamp connecting piece 7 is provided with a limit groove 7-1-2, and each limit groove 7-1-2 is arranged along the circumferential direction of the steel bar tightening and fixing sleeve, And there is a C-shaped ring 8 adapted to the limit groove 7-1-2, and the C-shaped ring 8 is embedded in the limit groove 7-1-2 of each clamp connecting piece 7, so as to be fixedly connected to the steel bar. The inner wall of the cavity 3 is positioned so that the inner walls of each clamp connecting piece 7 are fixed and connected to the inner wall of the cavity 3 in the circumferential direction.

The positioning structure of the clamp connection piece is as follows: it includes two circular metal pieces 9 whose diameters are adapted to the steel bar holding and fixing cavity, and a circular piece magnet 10 whose diameter is not larger than the diameter of the circular metal piece 9. The circular piece magnet 10 Located between the two circular metal sheets 9, each clamp connecting piece 7 is arranged in a ring and is adsorbed on the round edges of the two circular metal sheets 9 by the disc magnet 10, so that it is fixed in the steel bar fixing connection cavity 3. Positioning, so that the inner wall of each clamp connecting piece 7 ring steel fixed connection cavity 3 is arranged circumferentially.

The right end of the threaded connector 11 is provided with an external thread hole or an internal thread hole, which is used to connect other steel bar connection devices.

There are four clamp connecting pieces 7 .

How to use: Insert the rebar from the rebar insertion hole 2, extend through the rebar holding cavity to the inner ring of the rebar clamp assembly compression spring 6, and tighten the threaded connector 11, so that the rebar clamp assembly compression spring 6 is paired with the rebar clamp. When the component exerts a thrust to move it to the left, the inner wall of the conical cavity of the steel bar fixing connection cavity 3 will gradually guide each clamp connecting piece 7 to the axial position of the steel bar fixing connection cavity 3, so that the diameter of the steel bar fixing cavity is gradually reduced. , the steel bar gripping and fixing sleeves hold the steel bars in the steel bar gripping and fixing cavity tightly, and the steel bar occlusal teeth 7-1-1 on the inner side wall 7-1 of each clamp connecting piece 7 are embedded in the steel bar ribs, so that the steel bars are It is fixed in the fixed connection cavity 3 of the steel bar. Connect other reinforcing bar connecting devices through the inner threaded hole at the right end of the reinforcing bar connecting sleeve, or connect other reinforcing bar connecting devices through the externally threaded hole or the inner threaded hole provided on the right end of the threaded connector 11 .

Claims (6)

1. A reinforcing bar connecting device, characterized in that: it comprises a reinforcing bar connecting sleeve (1), and the left port of the reinforcing bar connecting sleeve (1) is a reinforcing bar insertion hole (2), which is on the right side of the reinforcing bar inserting hole (2). The sides are sequentially connected to the steel bar fixing connection cavity (3), the compression spring accommodating cavity (4) and the inner threaded hole (5) from left to right, and the steel reinforcement fixing connection cavity (3) is a conical cavity whose left port is smaller than the right port; A steel bar clamp assembly is installed in the conical cavity, a steel bar clamp assembly compression spring (6) is arranged in the compression spring accommodating cavity (4), and a threaded connection is screwed in the inner threaded hole (5). a piece (11) to push the rebar clamp assembly compression spring (6) to press toward the rebar clamp assembly; The steel bar clamp assembly includes a set of clamp connection pieces (7), each of the clamp connection pieces (7) is circumferentially arranged around the inner wall of the steel reinforcement fixing connection cavity (3), and each of the clamp connection pieces The inner side wall (7-1) of (7) is a circular arc surface located on the same axis, and the circular arc surface is provided with steel bar occlusal teeth (7-1-1). The outer side wall (7-2) of the connecting piece (7) has a tapered surface adapted to the taper of the inner wall of the steel bar fixing connection cavity (3), so that the outer side wall of each clamp connecting piece (7) is (7-2) When the inner wall (7-1) of each of the clamp connecting pieces (7) is tightly attached to the inner wall of the steel bar fixing connection cavity (3) in an annular arrangement, the inner side wall (7-1) of each of the clamp connection pieces (7) forms a cylindrical shape with an elastic gap. Inner ring surface, the cylindrical inner ring surface is a steel bar tightening and fixing sleeve, and the cylindrical cavity enclosed by the cylindrical inner ring surface is a steel bar tightening and fixing cavity. ) When the rebar clamp assembly compression spring (6) pushes the rebar clamp assembly to move it to the left, the inner wall of the tapered cavity of the rebar fixing connection cavity (3) pushes each clamp connection piece. (7) Gradually lead to the axial position of the steel bar fixing connection cavity (3), so that the diameter of the steel bar gripping and fixing cavity is gradually reduced, and the steel bar gripping and fixing sleeve will be located in the steel bar gripping and fixing cavity. The steel bars are held tightly, and the steel bar occlusion teeth (7-1-1) on the inner side walls (7-1) of each of the clamp connecting pieces (7) are embedded in the steel bar ribs, so as to fix the steel bars in the steel bar fixed connection inside the cavity (3). 2 . The reinforcing bar connecting device according to claim 1 , wherein the reinforcing bar clamp assembly is provided with a clamp connecting piece positioning structure for circumferentially arranging and axially positioning each of the clamp connecting pieces. 3 . 3. A reinforcing bar connection device according to claim 2, characterized in that: the clamp connection piece positioning structure is: a limiter is provided on the inner side wall (7-1) of each clamp connection piece (7). Position grooves (7-1-2), each of the position limit grooves (7-1-2) is arranged along the circumferential direction of the steel bar holding sleeve, and is provided with the position limit groove (7-1-2) ) matching C-type ring (8), the C-type ring (8) is embedded in the limit groove (7-1-2) of each of the clamp connecting pieces (7), so as to The steel bar fixing connection cavity (3) is positioned in the inner wall, so that each of the clamp connecting pieces (7) is circumferentially arranged around the inner wall of the steel reinforcement fixing connection cavity (3). 4. A reinforcing bar connecting device according to claim 2, characterized in that: the clamp connecting piece positioning structure is: comprising two circular metal pieces ( 9) and a disc magnet (10) with a diameter not larger than the diameter of the circular metal sheet (9), the disc magnet (10) being located between the two circular metal sheets (9), Each of the clamp connecting pieces (7) is arranged in a ring and is adsorbed on the round edges of the two circular metal pieces (9) by the disc-shaped magnets (10), so as to be fixedly connected to the reinforcing bars. The cavity (3) is positioned so that each of the clamp connecting pieces (7) is circumferentially arranged around the inner wall of the steel reinforcement fixing connection cavity (3). 5. A reinforcing bar connection device according to any one of claims 1-4, characterized in that: the right end of the threaded connector (11) is provided with an externally threaded hole or an internally threaded hole, which is used for Used to connect other rebar connection devices. 6. A reinforcing bar connection device according to any one of claims 5, characterized in that: the number of said clamp connecting pieces (7) is four.

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