CN2612751Y - Radial fastening mechanically coupled adaptor with rib reinforcing steel bar - Google Patents

Abstract

A ribbed bar radial fastening type mechanical connection joint used to connect reinforced bar in concrete structure comprises a sleeve 1, a ribbed bar 2, a breaking clamping screw 3, a safety pin 4, and a circular or rectangle rack bar 5, wherein the ribbed bar 2 is positioned by the sleeve 1, the circular or rectangle rack bar 5 and the safety pin 4, the breaking clamping screw 3 presses the ribbed bar 2 which can produce plasticity at the contact positions between the ribbed bar 2 and the breaking clamping screw 3 and the circular or rectangle rack bar 5, the sleeve 1 and the circular or rectangle rack bar 5, and the ribbed bar radial fastening type mechanical connection joint can bear axial load. The utility model has the advantages of reasonable structure, low cost, high reliability, and great execution value and social and economic benefits.

Description

Ribbed steel bar radial fastening type mechanical connection joint

technical field

The utility model relates to a mechanical connection joint, in particular to a radially fastened mechanical connection joint with ribbed steel bars, which is suitable for the connection of ribbed steel bars used in concrete structures.

Background technique

Existing mechanical connection technologies for ribbed steel bars, such as: cold extrusion connection technology, taper thread connection, straight thread connection, etc., each have certain advantages, but each has some shortcomings to varying degrees, such as sleeve The cold extrusion connection technology uses a high-pressure oil pump as the power source, and extrudes the connecting sleeve in the radial direction through an extruder, so that the sleeve produces plastic deformation, and occludes with the ribbed steel bar to form a whole to transmit force. Due to the heavy equipment and heavy labor intensity of the workers, poor maintenance of the equipment will easily cause oil leakage to pollute the steel bars, which will affect the normal performance of the effect and bring inconvenience to the use and maintenance. The connection speed is not as good as the threaded connection; The end of the steel bar is first processed into a tapered thread, and then the sleeve with the tapered thread is connected with the steel bar to be connected. When the steel bar is connected with the sleeve, a certain tightening torque must be applied to ensure the quality of the connection. If the worker neglects to tighten it for a while, the steel bar will easily slip off after being stressed. , affecting the performance of the joint. Although the taper thread connection has good neutrality, the requirements for the steel bar are strict. The steel bar cannot be bent or have a horseshoe-shaped cut, otherwise it is easy to produce incomplete threads, leaving hidden dangers to the connection quality. The upsetting straight thread connection technology is to cut off the horseshoe-shaped end of the steel bar first, and then use the steel bar heading machine to upset the steel bar end, and use the straight thread threading machine to cut it into a straight thread, and through the straight thread sleeve to The butt bars are joined together. The upsetting straight thread connection is not only a cumbersome process, but the metallographic structure of the head of the steel bar after upsetting changes. Without tempering treatment, stress concentration will occur and ductility will decrease, which is unfavorable for improving the stress of the joint. In production, there is an urgent need for mechanically connected joints with ribbed steel bars that are convenient, reliable and inexpensive.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings of the prior art, and provide a radially tight mechanical connection joint for ribbed steel bars with novel conception, unique structure, simple connection method, fast and reliable connection, and large axial bearing capacity.

Ribbed steel bar radial fastening type mechanical connection joint is characterized in that it is mainly composed of sleeve 1, ribbed steel bar 2, unscrewed top screw 3, positioning pin 4, circular or rectangular rack 5, in the sleeve Two circular or rectangular racks 5 are arranged in parallel in 1, and a positioning pin 4 is arranged in the middle of the sleeve 1, so that one end of the positioning pin 4 is in contact with two parallel circular or rectangular racks 5, and the left and right ends of the sleeve 1 are equidistant from each other. Screw holes are set, and screwed-off jacking screws 3 are set in the screw holes, and the ribbed steel bars 2 inserted at the left and right ends of the sleeve 1 are respectively fixed by the screwed-off jacking screws 3 at the left and right ends.

Compared with the prior art, the ribbed steel bar radial fastening mechanical connection joint of the utility model has the advantages of reasonable structure, reliable connection, convenient use, low comprehensive cost, etc., and has great practical value and social and economic benefits. It can be popularized and applied in various high-rise buildings, long-span structures, bridges, hydraulic structures, TV towers, nuclear power plants and other major engineering projects.

Description of drawings

Figure 1 is a schematic diagram of the front structure of the radially fastened mechanical connection joint of ribbed steel bars.

Fig. 2 is a left view structural diagram of a radially fastened mechanical connection joint for ribbed steel bars.

Figure 3 is a schematic top view of the ribbed steel bar radial fastening mechanical connection joint.

Among them: 1-sleeve, 2-ribbed steel bar, 3-tightening screw, 4-locating pin, 5-round or

  Rectangular rack.

Detailed ways

Embodiment 1: Figure 1 is an example of a radially fastened mechanical connection joint for ribbed steel bars. , is mainly composed of sleeve 1, ribbed steel bar 2, unscrewed top screw 3, positioning pin 4, circular or rectangular rack 5, and two circular or rectangular racks 5 are arranged in parallel in sleeve 1, A positioning pin 4 is arranged in the middle of the sleeve 1, so that one end of the positioning pin 4 is in contact with two parallel circular or rectangular racks 5, and screw holes are arranged equidistantly at the left and right ends of the sleeve 1, and the number of screw holes depends on the ribbed steel bar 2 Depending on the size of the diameter, screw 3 is set in the screw hole, and the ribbed steel bar 2 inserted at the left and right ends of the sleeve 1 is fixed by the screw 3 at the left and right ends respectively. The ribbed steel bar 2 is positioned through the sleeve 1, the circular or rectangular rack 5, and the positioning pin 4, and the ribbed steel bar 2 is pressed against the screwed tightening screw 3 so that the ribbed steel bar 2 is in the same position as the screwed off the screwed screw. 3. The contact part of the circular or rectangular rack 5 and the sleeve 1 produce a proper range of plasticity at the contact part with the circular or rectangular rack 5, so that the radially fastened mechanical connection joint of the ribbed steel bar can withstand a large large axial loads. When connecting, the torque acting on the unscrewed jacking screw 3 is increased until the minimum cross-sectional fracture of the unscrewed jacking screw 3 can ensure that the axial load borne by the radially fastened mechanical connection joint of the ribbed steel bar reaches the design value.

Claims (1)

1, Ribbed Bar fastening-type mechanical connecting joint radially, it is characterized in that mainly by sleeve 1, Ribbed Bar 2, twist into two parts and hold out against screw 3, alignment pin 4, circle or rectangle tooth bar 5 and formed, 2 circles or rectangle tooth bar 5 be arranged in parallel in sleeve 1, alignment pin 4 is set in the middle of sleeve 1, make parallel circle of alignment pin 4 one ends or 5 contacts of rectangle tooth bar with two, at the equidistant screw that is provided with in two ends, sleeve 1 left and right sides, setting is twisted into two parts and is held out against screw 3 in the screw, and the Ribbed Bar of inserting at two ends, sleeve 1 left and right sides 2 holds out against screw 3 by twisting into two parts of two ends, the left and right sides respectively and fixes.

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