CN100339546C

CN100339546C - Pipe clamp for scaffold

Info

Publication number: CN100339546C
Application number: CNB2004101034054A
Authority: CN
Inventors: 刘在伊
Original assignee: KINKANG IND CORP
Current assignee: KINKANG IND CORP
Priority date: 2004-12-29
Filing date: 2004-12-29
Publication date: 2007-09-26
Anticipated expiration: 2024-12-29
Also published as: CN1796705A

Abstract

The present invention relates to a pipe clamp for a scaffold, which has an improved structure that the erection part of a pipe clamp body is not sloped, and the integral shape of the pipe clamp body keeps into an L shape. When a pipe with minor diameter is clamped, the center of a hinged shaft is divided on a straight line for connecting the center of the pipe with minor diameter and the center of a support shaft on the front end of the pipe clamp body.

Description

Pipe clamp for scaffold

Technical field

The present invention relates to a kind of pipe clamp for scaffold, and be particularly related to a kind of can be with the securing pipe clamp for scaffold of the pipe with different radii.

Background technology

Pipe clamp is generally used for adopting pipe that scaffold is installed, or is used for being fixed to the used pipe of scaffold on the framework and the used pipe of scaffold being connected to each other when taking scaffold frame on-site.

Conventional pipe clamp can be described and shown in the reference number among Fig. 1 100 by diagram.

Conventional pipe clamp 100 comprises L shaped main body 110, lid 120 and is used for the front end of the front end of pipe clamp main body (being clamp) 110 and lid 120 bolt 130 and nut 131 of living fixed to one another, wherein the sweep 111 in the clamp 110 is to form in the inside of clamp 110, it has such shape and size, so that can contact with the part of the excircle of wanting clamped pipe P1; The bottom of lid 120 is connected in the top of clamp 110 rotationally by jointed shaft 112, sweep in the lid 120 is to form in the inside of lid 120, it has such shape and size, so that can contact with the other part of the excircle of wanting clamped pipe P1.

As the left side of Fig. 1 as seen, with regard to the front end of clamp 110, support 117 has the longitudinal cross-section of approximate " U " shape, and whole front end from clamp 110 stretches out, pair of sidewalls 117a (having only a sidewall to show among Fig. 1) is spaced relative to each other, fixed bearing the two ends of support shaft 114, and the rotatable head 130b of bolt 130 is bearing on the circumference of support shaft 114.

And, the front end of lid 120 is formed by breaking part 128 and bearing 129, the shape of breaking part 128 and size are enough to hold the threaded portion 130a of bolt 130, and bearing 129 is used for the fixing nut 131 that is threaded mutually with threaded portion 130a on two top margins of breaking part 128.

Thus, the threaded portion 130a of screw thread 130 is inserted into breaking part 128, and nut 131 is connected with threaded portion 130a compressing bearing 129, and so, the sweep 111 that pipe P is crushed on clamp 110 is clamped with covering between 120 the sweep 121.

Yet, in conventional pipe clamp, sweep 111 is formed with identical radius at clamp 110 with the inside of lid 120 with 121, conventional pipe clamp only can clamp the pipe that has same radius with

sweep

111 and 121, therefore for having the pipe of different radii, just needs suitable mutually with it pipe clamp, so, need select to be applicable to the pipe clamp of the pipe that clamps different sizes when scaffolding is with framework on-site a large amount of time, its result, conventional pipe clamp is also inconvenient.

In order to overcome above-mentioned shortcoming, a kind of pipe clamp has as shown in Figure 2 been proposed.

In order to clamp pipe P1 and P2 with different-diameter, conventional pipe clamp 200 as shown in Figure 2 has one first sweep 211a, two second sweep 211b and one the 3rd sweep 221b, the first sweep 211a is formed on the inside of clamp 210, and have first radius identical with the radius of the first pipe P1, the second sweep 211b is formed on the both sides of the first sweep 211a, and have second radius identical with the radius of the second pipe P2, the 3rd sweep 221b is formed on and covers 220 inner surface, and has the second above-mentioned radius.

In conventional pipe clamp 200, in order to form three

sweep

211a, 211b and 211b, the standing portion 210a of clamp 110 that can only clamp the conventional pipe clamp 100 of minor diameter pipe among Fig. 1 is tilted to the right, so that the space that is enough to form these three

sweep

211a, 211b and 211b to be provided, then, formed the clamp 210 of pipe clamp 200 as shown in Figure 2.

Because clamp 210 has the standing portion 210a of inclination, conventional pipe clamp 200 has such structure, make the top of clamp 210 be lower than the top of clamp 110, and the position of the jointed shaft 212 that couples together of the top that will cover 220 bottom and clamp 210 is lower than the conventional jointed shaft 112 shown in Fig. 1, so, the front end of downward-sloping lid 120 when clamping tube, become acclivitous lid 220, and move to the bottom of lid the position of the breaking part 228 of lid, its result, also not parallel at the bearing 229 that the front end that covers forms with the bottom of the nut of fixing with bolt 230 231, nut 231 can not be fixed on bearing 229, and bolt 230 can not be inserted in the breaking part 228.In order to overcome these shortcomings, in conventional pipe clamp 200, the downward-sloping front end of the lid 120 of the pipe clamp 100 shown in Fig. 1 is changed into the acclivitous front end of the lid 220 shown in Fig. 2, and the length that breaking part extends equals the distance that conventional breaking part moves to the bottom of lid, so, nut 231 can be fixed on the bearing 229.

At the conventional pipe clamp 200 that is used for clamping pipe with different-diameter, because the shape of lid 220 and position are changed and are acclivitous shape and position, and covering 220 front end is inclined upwardly, so will be longer than the distance between the support shaft 114 that is covering 120 front end and clamp 110 front ends in the distance between the support shaft 214 of lid 220 front end and clamp 210 front ends, so, for clamping tube P, just need between bolt 230 and nut 231, bigger fastening force be arranged, its result, compare with the lid 120 of routine, lid 220 needs bigger thickness, to obtain bigger fastening force.

Summary of the invention

Therefore, in view of the problem of above-mentioned and/or others, made the present invention.The object of the present invention is to provide a kind of pipe clamp, it has such clamp, wherein, the standing portion of clamp is not what tilt, the global shape of clamp keeps " L " shape, and when clamping when having the pipe of minor diameter, the center of jointed shaft is spaced on the straight line that couples together at the center of the pipe that will have minor diameter and the center that is installed in the support shaft of clamp front end.

According to the present invention, above-mentioned and other purpose can realize by a kind of improved pipe clamp that is used for scaffolding structure is provided, wherein, clamp has formed " L " shape on the whole, and the jointed shaft that is contained in the clamp top is spaced on the straight line that couples together at the center of the support shaft that will be loaded on the clamp front end and the center with pipe of minor diameter.

Description of drawings

In conjunction with the accompanying drawings, from the description of following examples, described these and/or other purpose of the present invention and advantage are significantly, and easier realizing.In the accompanying drawings:

Fig. 1 has shown a kind of lateral view that is used to clamp the conventional pipe clamp with special diameter pipe.

Fig. 2 has shown the another kind of lateral view that is used to clamp the conventional pipe clamp with different-diameter pipe.

Fig. 3 has shown a kind of stereogram of pipe clamp according to a preferred embodiment of the invention.

Fig. 4 has shown by the lateral view at first pipe that pipe clamp clamped according to a preferred embodiment of the invention shown in Fig. 3.

Fig. 5 has shown by the lateral view at second pipe that pipe clamp clamped according to a preferred embodiment of the invention shown in Fig. 3.

Fig. 6 has shown the fragmentary sectional elevation view that the front end of the clamp front end of pipe clamp of the present invention and lid is engaged with each other.

The specific embodiment

Below, pipe clamp according to a preferred embodiment of the invention will be described with reference to the drawings.

As shown in Figure 3, except the front end of the shape of clamp and lid was different, pipe clamp 1 according to a preferred embodiment of the invention comprised the member identical with the member of conventional pipe clamp 200.For the improvement part of the pipe clamp 1 of describing the preferred embodiment of the present invention, below will do concise and to the point description again to these identical members.

In order to clamp pipe, comprise clamp 10, lid 20 and bolt 30 and nut 31 with the same in conventional pipe clamp, shown in Figure 3 pipe clamp 1 with different-diameter.Clamp 10 has one first sweep 11a and two

second sweep

11b and 11b, the first sweep 11a is formed on the inside of clamp 10, and have first radius identical with the radius of first pipe, two

second sweep

11b and 11b are formed on the both sides of the first sweep 11a, and have second radius identical with the radius of second pipe.Lid 20 has one the 3rd sweep 21b, and the 3rd sweep 21b is formed on and covers 20 inner surface, and has second radius identical with the radius of the second sweep 11b.Bolt 30 and nut 31 are used for front end with clamp 10 and are fixed to and cover 20 front end, and fixed to one another.

And, as shown in Figure 6, support 17 with approximate " U " tee section stretches out in the front end of clamp 10 on the whole, shown in Fig. 3～6, the two ends of support shaft 14 are by two on the support 17 sidewall 17a respect to one another and 17b fixed bearing, and the head 30b rotatable support of bolt 30 is on the circumference of support shaft 14.

Shown in Fig. 3～6, the front end of lid 20 has a breaking part 28 and a bearing 29, shape that breaking part 28 has and size are enough to hold the threaded rod 30a of bolt 30, and bearing 29 is used for fixing nut 31, makes it to be threadedly connected on the both sides of breaking part 28 threaded rod 30a.

In addition, shown in Fig. 3～5, differently with the shape of conventional pipe clamp 200 be, pipe clamp 1 according to a preferred embodiment of the invention has the profile of " L " shape, and wherein the standing portion of clamp 10 is perpendicular to clamp bottom 10b.As a reference, Fig. 4 has shown a view by a minor diameter pipe P1 of pipe clamp clamping of the present invention, and Fig. 5 has shown a view that clamps a big-inch pipe P2 by pipe clamp of the present invention.

As shown in Figure 4, when according to a preferred embodiment of the invention pipe clamp 1 clamps the pipe P1 of minor diameter, in the clamp 10 the formed first sweep 11a with the lid 20 in formed the 3rd sweep 21b contact with the excircle phase surface of minor diameter pipe P1, simultaneously, that couple together with respect to the center S with the center C of minor diameter pipe P1 and support shaft 14 and straight line A that extend to jointed shaft 12, the center T of jointed shaft 12 is offset to the left side.

When above-mentioned pipe clamp is constructed, clamping under the situation of minor diameter pipe P1 or big-inch pipe P2 as Fig. 4 and pipe clamp shown in Figure 51, distance between the support shaft 14 of lid 20 front end and clamp 10 front ends is short, so, need not downward-sloping front end with the lid 120 of conventional pipe clamp 100 and become as shown in Figure 2 acclivitous front end, and need not breaking part 28 is extended to an equidistant length that moves to the bottom of lid with the breaking part of conventional pipe clamp, the front end of lid 20 still can be connected with the front end of clamp 10 with nut 31 by bolt 30.

Therefore, since the distance that is formed at the bearing 29 that covers 20 front ends and is formed between the support shaft 14 of clamp 10 front ends is shorter than the distance in the conventional pipe clamp that shows in Fig. 2, so, during by clamp 10 and lid 20 clamping tube P1 or P2, as long as the necessary clamping force of clamping tube P1 or P2 applies weak power and just can obtain, the lid 20 of pipe clamp 1 can be more thinner than the lid 220 of the conventional pipe clamp 200 that shows among Fig. 2 so, according to the preferred embodiment of the invention.

One at preferred embodiment is improved among the embodiment, the front end of lid 20, shown in the left side of Fig. 5, has " U " shape longitudinal cross-section as shown in Figure 6, and should " U " shape the both sides of part facing to two

sidewall

17a and 17b at the formed support 17 of the front end of clamp 10, width and shape that should " U " shape part be enough to contain support 17 and support shaft 14.

Pipe clamp according to improvement embodiment of the present invention, when clamping minor diameter pipe P1, can not hamper two

sidewall

17a and 17b of support 17 on the both sides of lid 20 front end 27 formed " U " shape part and run through the two ends of the support shaft 14 of these two sidewalls, and, lid can descend to the front end of clamp, so, adopting minimum pressure just can make by the pipe P1 or the P2 of clamp 10 and lid 20 clampings fixes.

As mentioned above, according to pipe clamp of the present invention, since adopt minimum pressure just can clamp the pipe with different-diameter, so, the thickness of lid is compared and can be reduced with the thickness of the lid of conventional pipe clamp, and the cost of manufacturing pipe clamp can reduce.

Though the preferred embodiments of the present invention disclose intuitively, those those skilled in the art will realize, under situation about not breaking away from as the scope and spirit of the present invention that disclosed in appended claims, it all is possible coming from various modifications of the present invention, increase and replenishing.

Claims

1. one kind can optionally clamp the pipe clamp that is used for scaffold with different-diameter pipe, comprising:

Have the main body of one first sweep and two second sweeps, first sweep is formed on the inner surface of main body, and second sweep is formed on the both sides of first sweep;

Be rotationally connected with the lid of main body by the jointed shaft of packing on the top of main body; And

Be used for the bolts and nuts that the front end with main body is connected with the front end of lid;

Wherein, main body has the profile of " L " shape, and

The jointed shaft that is contained in the main body top is mounted like this, so that the center of jointed shaft is spaced on the straight line that couples together at the center of the support shaft that will be loaded on body front end and the center with pipe of minor diameter.

2. pipe clamp as claimed in claim 1, wherein, the front end of lid is " U " shape, should " U " shape the both sides of part facing to two sidewalls at the formed support of body front end, and the width that should " U " shape partly has and the shape support and the support shaft that are enough to contain main body.