CN2276958Y - Building fast clamping, direct rotating general fastening - Google Patents

Abstract

The utility model relates to a building fast clamping and direct rotating general fastener for connecting pipe fittings, which solves the technical problems that the bolt and the screw cap of the traditional fastener are difficult to remove because of rusting, the abandonment and the loss are serious, and the recovering ratio for repeated use is low. The utility model is characterized in that a lug boss hole at one end of the fastener is provided with pins and connected with a gland bush. Both sides of a U-shaped notch of the gland bush are provided with curved surface teeth from the lower position to the high position, and the curved surface teeth are fastened and connected by axis teeth on a T-shaped pull rod (9). The fastener has the characteristics of installation clamping, fast disassembly and disconnection, convenient operation, safety and reliability, and can change the diameter in a certain scope. The utility model is a steel pipe scaffold fastener with strong versatility, no threaded connection and right angle rotating butt joint.

Description

The fast folder of building direct rotary is to general fastener

The utility model relates to a kind of quick-acting fastening, particularly relates to a kind of fast folder direct rotary that is used for building trade to general fastener, and this fastener comprises that right angle, rotation are to clasp.

The securing member that industries such as known various universal machine electrical equipment buildings are used adopts bolt to wear nut usually, and is fastening with realizing after the instrument turn, the securing member of this threaded nut, when screw thread be damaged or corrosion after dismounting extremely inconvenient, even can not use.As issue three kinds of fasteners that the JGJ22-85 ministry standard that 1985-05-01 implements is announced at the 1985-02-01 of Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China (PRC).These three kinds of fasteners are: 1. be used for the right-angle coupler that two square crossing steel pipes connect, its main components has bolt, nut, pin and right angle seat.2. be used for the rotary buckle that two arbitrarily angled intersection steel pipes connect, main components is bolt, nut, pin, rivet, cover plate and rotating seat.3. be used for that the butt joint of two steel pipes connects to clasp, main components bolt, nut, the bar heart and a pair of joint chair with connect lid.Be not difficult to find out that above-mentioned three kinds of fasteners have all adopted the connection form of the fastening steel pipe of cooperation of bolt nut.This fastener with the fastening steel pipe of thread connection, workload is big and heavy, and the labour intensity height install to connect and dismantles pretty troublesomely, and operating efficiency is also very low.And the fastener long term exposure is in the open on the building site, the corrosion of exposing to the sun and rain all day, and the attached collection of cement mortar is on bolt nut, increased the dismounting difficulty, even possibly can't dismantle, have to adopt destructive carve to cut cut saw, cause reclaiming that repeat usage descends and serious lose waste.In recent years the fast clamp jaws of announcing in patent documentation of some scaffolds is owing to changed the geometry of known fastener, also exist on the structural member principle many defectives and because of cost too high, the installing/dismounting inconvenience does not meet the fastener standardised generic, and fails to realize implementing to promote.

The utility model purpose provides a kind of simple in structure, cost is low, and no screw thread does not change the basic geometry that has fastener now, but the securing member of standardised generic, and can safety interlocking, have anti-theft feature installing/dismounting building easy to use and press from both sides direct rotary soon general fastener.

The technical solution of the utility model is achieved in that at the boss hole of fastener body (1) one end (2) pin (3) is housed, one end of the gland (5) that is connected in that boss hole (2) is gone up and rotates around pin (3) is shaped on hole (4), the other end (8) is shaped on the U-lag mouth, be shaped on the curved surface tooth (6) that can be meshed on the notch upper surface inclined-plane from low to high with the axle tooth (7) on the horizontal end of T shape pull bar (9), hole (12) on button (1) other end and the hole (10) that T shape pull bar is housed are passed by the semicircle spindle nose (11) that has eccentric roll adjustment axle (13).Realized firm mold release function.

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

Fig. 1 is a general principle structure chart of the present utility model.Fig. 2 is the rotary buckle structural representation after improving.Fig. 3 is the butt joint fastener structures schematic diagram after improving.

Fig. 1 has described the general principle structure of the utility model fastener, when gland (5) when being in opening, steel pipe or workpiece (14) are installed in clasp (1), rotating tension bar (9) is gone up the T oblique crank Z tooth (7) that connects for one then, after the curved surface tooth (6) that takes the shape of the letter U towards gland (5) front end (8) upper side is gone up card and is hung, connect as one eccentric roll adjustment axle (13) with special-purpose anti-theft tool card to the spindle nose that is semicircle (11) again, after in pull bar (9) bottom end pulling bar hole (10), rotating 180 ° downwards, make pull bar (9) produce downward axial tension.Shrink the back force transmission and give gland 5, thereby workpiece (14) firm grip.

When needs with caught workpiece (14) when getting loose, to be semicircle spindle nose (11) with special-purpose anti-theft tool card rotates up, after pull bar (9) connect down eccentric roll adjustment axle (13) into one in the stomidium (10) and rotate 180 °, make between the curved surface tooth (6) on the T-shaped axle tooth (7) for one in pull bar (9) upper end and the gland (5) pressure remove and produce the gap and consequently reach the original state that gets loose, with instrument or hand the hole (10) of pull bar (9) in company with the pull bar lower end proved through checking computations of circumferential contact friction factor and prototype test, can realize the fastening function that gets loose fast.The utility model has passed through several times and has improved test and trial production repeatedly.Succeed through carry out tests such as antiskid by national standard.

Fig. 2 has described the embodiment of the utility model rotary buckle, present embodiment is on the embodiment basis shown in Fig. 1, right-angle coupler by two symmetries constitutes, its difference is that to have passed through rivet (14) and pass through hole (15) riveted on symmetrical fastener body (1) be one, and fastener body (1) can relatively rotate around rivet (14).On two fasteners (1), still be shaped on boss hole (2) and be connected in gland (5).The structure of gland (5) as described in Figure 1, in principle and textural similar fully to Fig. 1.

Fig. 3 has described the embodiment of the utility model to clasp, its structure construction and Fig. 1 are basic identical, its difference be fastener body (1) by two hinged constituting of semicircle fastener body, and passed its hole (2) structure that is combined into one by pin (3), can open or close up around pin (3).Connect gland (5) on the boss hole of fastener body (1) one end, gland (5) one ends are hole (4), the other end (8) the side mouth that takes the shape of the letter U.The structural texture of gland (5) is as described in preceding Fig. 1, Fig. 2, and structural principle has no difference.The utility model compared with prior art has following advantage: 1, general fastener does not have threaded screw, is not afraid of corrosion, even corrosion also can tightening and loosening.2, general fastener can be realized reducing, has safety interlocking.3, simple in structure, cost is low, and installing/dismounting is easy to use.4, do not change the basic geometry of existing several scaffold clasps, realized standardised generic.

The utility model is widely used in mechanical electric apparatus, and the dismounting of machine tool Fast Installation is specially adapted to various engineering scaffolds such as construction work, water conservancy, chemical industry, metallurgy, coal.

Claims (2)

1, the fast folder of a kind of building direct rotary is to general fastener, it is characterized in that: the boss hole (2) at fastener body (1) one end is equipped with pin (3), one end of the gland (5) that is connected in that boss hole (2) is gone up and rotates around pin (3) is shaped on hole (4), the other end (8) is shaped on the U-lag mouth, be shaped on the curved surface tooth (6) that can be meshed on the notch upper surface inclined-plane from low to high with the axle tooth (7) on the horizontal end of T shape pull bar (9), hole (12) on button (1) other end and the hole (10) that T shape pull bar is housed are passed by the semicircle spindle nose (11) that has eccentric roll adjustment axle (13).

2, building as claimed in claim 1 is pressed from both sides direct rotary soon to general fastener, it is characterized in that the lip-deep curved surface tooth of gland (5) can be made separately to be embedded on the gland.

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