CN2219183Y

CN2219183Y - Quick-clamping pipe tongs

Info

Publication number: CN2219183Y
Application number: CN 94222814
Authority: CN
Inventors: 董峰涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-10-06
Filing date: 1994-10-06
Publication date: 1996-02-07
Anticipated expiration: 2004-10-06

Abstract

The utility model relates to a quick-clamping pipe wrench which comprises a wrench head 1, a hand wheel 2, and a wrench body 4. An upper alligator tooth 7 and a lower alligator tooth 6 are respectively arranged on the wrench head 1 and the wrench body 4. The flat screw rod 3 of the wrench head 1 penetrates through the wrench body 4 and is engaged with the hand wheel 2 arranged in the wrench body 4. The utility model is different from the traditional pipe wrench, because symmetrical slotted grooves used for inserting the flat screw rod 3 of the wrench head are longitudinally arranged on the hand wheel 2 of the utility model along the inner thread hole. Two hand wheels 2 with stagger grooves can be used in order that the wrench head 1 can be conveniently and reliably fixed on the required position. A handle 5 can be arranged on the hand wheel 2 in order that the large-sized pipe wrench can be conveniently taken off. The utility model has the advantages of quick adjustment of the size of the wrench mouth, convenient clamping, convenient disassembly, and labor saving.

Description

Clamp pipe wrench fast

The utility model relates to machine tool, specifically is a kind of quick clamping pipe wrench.

Pipe wrench is the specific purpose tool that is used to adorn, tear open pipe.When small-bore pipe links to each other, generally be the rotating part rotation of clamping pipe with pipe wrench, the screw thread on it is screwed in the screw thread of fixing tube, tube and tube is connected.To the heavy caliber pipe, as oil, chemical engineering industry, generally be the static part of clamping pipe with pipe wrench, the pipe of rotating part clamps rotation by special equipment, screws in to realize in the motionless pipe connecting.At this moment pipe wrench is practised and is claimed the bottoming pincers.The size system of traditional its jaw of pipe wrench regulates by external screw thread on the binding clip and the relatively rotating of internal thread that is loaded on handwheel in the vice body.The problem that exists be since the internal thread that the internal thread of handwheel, causes handwheel along circumferentially continuously all the time with the external screw thread engagement of binding clip.Moving of binding clip can only realize by rotating handwheel.Therefore the pace of change of jaw is slow, causes inefficiency, simultaneously the quick abrasion of handwheel internal thread.Pipe wrench takes off effort from pipe in addition, especially is used to the large-scale pipe wrench that feels secure, takes off very difficulty.

The purpose of this utility model provides a kind of can the clamping fast, and takes off conveniently the quick clamping pipe wrench that the life-span is long.

The utility model is achieved in that quick clamping pipe wrench comprises binding clip, caliper, handwheel.Be shaped on the crocodile tooth on the binding clip, be shaped on down the crocodile tooth on the caliper.The flat screw rod of binding clip passes caliper.Handwheel in the caliper moves relative to caliper by the engagement of the external screw thread on the flat screw rod of internal thread and binding clip and by screw rod drive binding clip.The internal thread hole of handwheel longitudinally has the elongated slot of symmetry, can pass through for the flat screw rod of binding clip.

Handwheel is preferably two.Vertical symmetrical elongated slot in two handwheel internal thread holes preferably differs 90 degree with respect to the original position difference of internal thread.This structure generally is used for small-bore pipe wrench.

Also one on handwheel is shaped on the handle that is spatial vertical with the handwheel axis on the handwheel periphery.This structure generally is used for the heavy caliber pipe wrench.

Pipe wrench described in the utility model, can be owing to have in the handwheel internal thread hole for vertical elongated slot of the flat screw rod of binding clip longitudinal sliding motion therein, can directly promote binding clip during use slides flat screw rod fast in the vertical elongated slot in the handwheel internal thread hole, when jaw meets the requirements of size, rotate handwheel the external screw thread on its internal thread and the flat screw rod is meshed, jaw can be fixed on the needed position.Therefore, the utility model not only is convenient to quick clamping, has alleviated the handwheel internal thread greatly with respect to the externally threaded friction of flat screw rod simultaneously, has prolonged service life.

The purpose of using two handwheels is to guarantee can reliably binding clip be locked when jaw is adjusted to the needs size.

Being shaped on the handle purpose on the handwheel is to be convenient to the handwheel reinforcing, so that take off pipe wrench.

Fig. 1 is an embodiment who clamps pipe wrench fast;

Fig. 2 is the transverse cross-sectional view of the flat screw rod of binding clip;

Fig. 3 is the structural map of traditional pipe wrench handwheel;

Fig. 4 is the structural map that clamps the pipe wrench handwheel fast;

Fig. 5 is the structural map that has the quick clamping pipe wrench handwheel of handle.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a kind of structure chart that is used for the quick clamping pipe wrench of large-diameter pipe, mainly comprises binding clip 1, caliper 4, handwheel 2.Be shaped on crocodile tooth 7 on the binding clip 1.The flat screw rod 3 of binding clip 1 passes caliper 4, and with caliper 4 in handwheel 2 engagement.Longitudinally be shaped on the elongated slot of symmetry in the internal thread hole of handwheel 2.The width b ' of this groove is greater than the width b of flat screw rod 3, and flat screw rod 3 can slide in two elongated slots.One end of caliper 4 is shaped on down crocodile tooth 6.When pipe unloads pipe wrench, can handwheel be rotated by the handle on the handwheel 25, not only laborsaving but also convenient.For small-sized pipe wrench, can not install handle 5 on the handwheel 2.For making jaw be fixed on needed position exactly, preferably use two internal thread holes to have the handwheel of symmetrical elongated slot.Elongated slot in two handwheel internal thread holes should be not identical with respect to the original position of its internal thread, preferably differs 90 degree.

Claims

1, a kind of quick clamping pipe wrench comprises binding clip, caliper, handwheel; Be shaped on the crocodile tooth on the binding clip, be shaped on down the crocodile tooth on the caliper, the flat screw rod of binding clip passes caliper; Handwheel in the caliper is by the external screw thread on internal thread and the flat screw rod of binding clip engagement, and the internal thread hole that it is characterized in that handwheel longitudinally has the elongated slot of the symmetry that can pass through for the flat screw rod of binding clip.

2, by the described quick clamping pipe wrench of claim 1, it is characterized in that said handwheel is two; Vertical symmetrical elongated slot in two handwheel internal thread holes preferably differs 90 degree with respect to the original position difference of internal thread.

3, by the described quick clamping pipe wrench of claim 1, it is characterized in that handwheel is one, is shaped on the handle that is spatial vertical with the handwheel axis on the handwheel periphery.