CN2265415Y - Device for connecting reinforcing bar - Google Patents

Abstract

The utility model relates to a device for connecting a reinforcing bar, which is composed of a screw bolt (1), a screw nut (2), and sleeve barrels (3), (4); the device for connecting the reinforcing bar is characterized in that the screw bolt (1) is provided with a fixed latch key (11), and the inner diameter of the screw nut (2) corresponding to the screw bolt is provided with a tapered key groove (12); the upper and lower ends of the screw bolt (1) can be squeezed out screw threads through a rolling mode for expanding the screw threads, and for blocking off the screw nut (2) from dropping off the screw bolt (1); the screw nut (2) and the screw bolt (1) can be synchronously rotated, the screw nut (2) can moved in the space of the key groove, and the purpose of tight connection of the two sleeve barrels when continuous connecting can be achieved. The device for connecting the reinforcing bar has the advantages of simple structure, convenient and rapid operation, time saving, and reliable performance.

Description

A kind of steel bar connector

The utility model relates to mechanical connection device, particularly a kind of steel bar connector.

Now, for continued access reinforcing bar convenience, occurred as Fig. 1, Fig. 2, the steel bar connector of tradition shown in Figure 3, its structure is: an end of bolt (1) is a plus thread, the other end is a minus thread, a fixing nut (2) is established in the centre, its effect be bolt (1) is rotated and with sleeve (3), (4) engage, though this kind steel bar joining structure must not rotated reinforcing bar (5), utilize bolt (1) but rotation continued access reinforcing bar (5) just, but, when bolt (1) rotates, skid and dally because the acting surface of gravity produces, just can't make, minus thread is locked in sleeve (3) and the sleeve (4) simultaneously, therefore after locking, can leave gap (6) (as shown in Figure 3), and can not fluid-tight engagement; At the appearance of above-mentioned gap (6), there have the people that nut (2) is designed to be movable eliminating gap (6), but because after nut (2) activity, in the locking process, usually because of making nut (2) DeGrain that drops because of carelessness.

The utility model has designed a kind of new steel bar connector at gap (6) and the deficiency that drops of nut (2) in the locking process that above-mentioned steel bar connector exists.

The technical solution of the utility model is as follows:

The upper and lower side of bolt is positive minus thread district, middle is no threaded area, a latch key is established in the mesozone, nut is inserted in the mesozone of bolt, it offers a taper keyway with the corresponding position of latch key, the size of its tapering makes unlikely the dropping of nut determine into standard, the setting of latch key and taper keyway is to make bolt and nut rotation synchronously and can be up and down, both ends of the surface at nut are two bore holes of garden heart boring with the garden heart of nut inwardly in addition, the diameter of this bore hole is greater than the internal diameter of nut, after nut and the bolt combination, it is movable that nut is limited in the space of keyway (12).During assembling continued access device spiro cap is inserted in the latch key of bolt, thereafter, with the method thread-rolling screw that the bolt top of the taper keyway small end of nut extrudes with roll extrusion, the extruding rear thread expands, and blocks nut and from then on it can not be held come off; Squeeze out the screw thread of the other end then with same method, because nut up and down generation of eliminating gap (6) in keyway (12) scope, simultaneously because the screw thread of bolt upper end has blocked nut, nut can not be come off from the upper end, solved the problem that traditional steel bar connector exists preferably.

Describe structure of the present utility model and embodiment in detail below in conjunction with accompanying drawing:

The view that Fig. 1 does not engage in continued access reinforcing bar fashion for traditional steel bar connector.

Fig. 2 is the view during traditional steel bar connector engages when the continued access reinforcing bar.

Fig. 3 is that traditional steel bar connector engages the view after finishing when the continued access reinforcing bar.

Fig. 4 is a D structure schematic diagram of the present utility model.

Fig. 5 is an internal structure cross-sectional schematic of the present utility model.

The view of Fig. 6 during for the utility model assembling and thread-rolling screw.

View when Fig. 7 is another assembling of the utility model and thread-rolling screw.

(1) be bolt, (2) are nut, and (3), (4) are sleeve, and (5) are reinforcing bar, and (6) are the gap, and (11) are that latch key, (12) are keyway, and (13) are the nut internal diameter, and (14) are bore hole.

As accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, shown in the accompanying drawing 7, establish a fixing latch chain (11) in the mesozone of bolt (1), offer a taper keyway (12) in the internal diameter of nut (2), the degree of depth of its keyway (12) lower end is greater than the height of latch key (11), the degree of depth of keyway (12) upper end less than the height of latch key (11) (as accompanying drawing 5, shown in Figure 6), therefore, when nut (2) is inserted in the mesozone of bolt (1), its keyway (12) just in time matches and can not drop with latch key (11), its effect of setting up and be used of keyway (12) and latch key (11) is bolt (1) and nut (2) to be rotated synchronously or static, and nut (2) can be up and down, be the bore hole (14) of two appropriate depth of garden heart boring at the both ends of the surface ecto-entad of nut (2) with the garden heart of nut (2) in addition, the diameter of bore hole (14) is greater than nut internal diameter (13); During the assembling steel bar connector, earlier nut (2) cover is inserted on the last latch key (11) of bolt (1), to extrude screw thread with the method that roll extrusion extrudes near terminal bolt on keyway (12) degree of depth small end then, after extruding, threaded expander, it is big that diameter becomes, thereby block nut (2), make it not deviate from (shown in attached 6) from end on the bolt (1), extrude out the other end screw thread of bolt (1) then with same method, the diameter of thread becomes big (as shown in Figure 7), therefore nut (2) is after making up with bolt (1), it is movable to be limited in the space of keyway (12), has reached the sleeve on the steel bar connector (3), sleeve (4) is in continuous energy fluid-tight engagement when press reinforcing bar (5), and the purpose that nut (2) can not drop in engaging process.This kind reinforcing bar is continuous, and to press device simple in structure, easy to operately saves time dependable performance fast.

Claims (3)

1, a kind of steel bar connector, it is made up of bolt (1), nut (2) and sleeve (3), sleeve (4), it is characterized in that: the last mesozone of bolt (1) is provided with a fixing latch key (11), nut (2) is enclosed within on the latch key (11) of mesozone of spiral shell inspection (1), a taper keyway (12) is offered at nut (2) position corresponding with latch key (11), hold the height of the degree of depth under the keyway (12), and hold the height of the degree of depth on the keyway (12) less than latch key (11) greater than latch key (11).

2, according to the described a kind of steel bar connector of claim 1, it is characterized in that described nut (2), at its two bore holes of both ends of the surface ecto-entad boring (14), two bore holes (14) are the garden heart with the garden heart of nut (2), and its diameter is greater than nut internal diameter (13).

3, according to the described a kind of steel bar connector of claim 1, it is characterized in that the screw thread at described bolt (1) two ends is squeezed into hydraulic way, its external diameter is greater than nut internal diameter (13).

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