CN2275013Y - Pipe vice - Google Patents

Abstract

The utility model relates to a pipe wrench which is provided with a wrench head and a wrench handle, wherein, the wrench handle is hinged and connected in a slot on the rear end of the wrench head by a rotating shaft to form a mutually rotating body. The inner side of the front end of the wrench head is provided with fixed teeth, and the outer edge of the head of the wrench handle is provided with movable teeth. A backing pin is also arranged on the slot on the rear end of the wrench head, and a sliding positioning and adjusting block is also arranged on the wrench handle. The utility model has the advantages of simple structure, reasonable structure, small volume, light weight, high clamping performance and strong torsional strength. The rotating angle of the wrench handle is controlled by a slide way and the positioning and adjusting block, which can effectively prevent the occurrence of the phenomenon of the damage of pipe pieces because of clamping force which is too large, so the utility model is safe. The work efficiency is improved, and the utility model is widely suitable for the disassembling and assembling work of various pipelines.

Description

A kind of pipe wrench

The utility model relates to a kind of hand tools, specifically a kind of pipe wrench.

We know, oil, chemical industry use the toggle machine to unscrew and when tightening pipeline, an oil pipe wherein be fixed, and pipe wrench is the instrument of an indispensability.At present, what generally use is the pipe vice of 900-1200mm specification, and it is made up of moving jaw, adjusting nut, pincers handle body, moving jaw is contained in the pincers cover of pincers handle body by adjusting nut, rotate adjusting nut, moving jaw is elongated or shortened on the pincers handle, adjust jaw size with this.This pipe vice volume is big, Heavy Weight, and torsional strength is low, and it is 3300-4400NN that its maximum is born moment of torsion, during use, fracture often occurs, and crooked and nut, screw thread are out of shape, and the phenomenon that can not regulate is again brought many inconvenience to production.At present, also has a kind of self-tightening pipe vice, as a kind of pipe vice that comes to this of patent 91219304.2 announcements, it is made up of binding clip, handle, rivet, utilizes lever principle, adopts crowbar formula pincers handle, produce clamping force, clamping force can reach more than the 10000NN, has simple in structure, easy to use, automatically adjust jaw size, tighten advantages such as workpiece automatically, but clamping force is uncontrollable, the phenomenon of infringement oil pipe can occur, do not applied.

The purpose of this utility model is exactly in order to overcome the deficiency of above-mentioned prior art, provides a kind of simple and reasonable for structure, easy to adjust, in light weight, and it is good to clamp performance, torsional strength height, the novel pipe wrench that clamping force can be effectively controlled.

For achieving the above object, a kind of pipe wrench, it is provided with binding clip, pincers handle, the pincers handle is hinged in the groove of binding clip rear end by rotating shaft, constitute mutual rotor, fixed teeth is equipped with in binding clip front end inboard, and pincers negative winding stem outer rim is equipped with movable tooth, it is characterized in that also being provided with on the groove of binding clip rear end retaining Xiao, also be provided with a slip positioning adjust block on the pincers handle.

The utility model positioning adjust block is to be fixed in the groove of pincers handle side by two clamping plate, positioning adjust block bottom surface and pincers handle are provided with the slip teeth of mutual interlock, positioning adjust block can move forward and backward along the groove and the slip teeth of pincers handle both sides, during use, retaining Xiao on itself and the binding clip rear end slot cooperatively interacts, regulate the size of clamping claw, the unlimited generation of control clamping force.The hinge point of the utility model binding clip and pincers handle can be provided with a plurality of, can on the pincers handle chute hole be set, and two hinge supporting-points are set on it, can enlarge the adjusting range of pipe wrench jaw size like this, to satisfy being fixedly clamped of various oil pipes.

The utility model is rational in infrastructure, and is easy to adjust, the torsional strength height, the clamping performance is good, and the scope of application is wide, can prevent the phenomenon that clamping force is crossed the major injury oil pipe, can be widely used in oil, chemical industry and the cooperation of toggle machine and play back of the body use, safe and reliable, production efficiency improves greatly.

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1 is the utility model structural representation.

Fig. 2 be among Fig. 1 A-A to schematic diagram.

From Fig. 1, Fig. 2, can find out, a kind of pipe wrench, it is provided with binding clip 2, pincers handle 9, binding clip 2 is camber, its front end inboard is provided with fixed teeth 1, and pincers handle 9 front outers are provided with movable tooth 3, fixed teeth 1 and binding clip 2, movable tooth 3 all adopts the chase mortise formula to combine with pincers handle 9, and fixed teeth and movable tooth can conveniently be regulated replacing.During use, the two cooperatively interacts, and in order to clamp pipe fitting, prevents that pipe fitting from sliding.The utility model pincers handle 9 adopts the crowbar formula, and it is hinged in the groove of binding clip 2 rear ends by rotating shaft 11, constitutes mutual rotor, and rotating shaft 11 is exactly the bolster that crowbar formula pincers handle 9 rotates.During use, binding clip entangles pipe fitting, the toggle machine rotates oil pipe, hold the pincers handle and just formed clamping force and moment of torsion, the oil pipe rotatory force is big more, and clamping force and moment of torsion are just big more, cross major injury oil pipe surface in order to prevent clamping force, the utility model is provided with retaining Xiao 4 on the groove of binding clip rear end, pincers handle 9 is provided with a slip positioning adjust block 5.Positioning adjust block 5 adopts the wedge type, its both sides are equiped with clamping plate 6, clamping plate 6 bottoms are provided with the convex edge, pincers both sides, handle 9 top are provided with long strip type groove 8, positioning adjust block 5 is fixed on the groove 8 of pincers handle by clamping plate 6, be respectively equipped with slip teeth 7 on positioning adjust block 5 bottoms and the pincers handle, positioning adjust block 5 can move forward and backward along slip teeth 7 and groove 8, according to the pipe fitting diameter, determine the position of positioning adjust block 5, it cooperatively interacts with retaining Xiao 4, regulates jaw size, block pincers handle 9 and be rotated further, the control clamping force continues to produce.

The utility model is in order to enlarge the adjusting range of jaw size, and maximum magnitude satisfies the use of various pipe fittings, is provided with a chute hole 12 on pincers handle 9, which is provided with two hinge supporting-points.Rotating shaft 11 can drive binding clip 2 and slide in chute hole 12, is fixedly supported upon in any hinge supporting-point, can regulate the size of jaw like this, satisfies the needs that various pipe fittings use.

The utility model has adopted lever principle and crowbar formula pincers handle to produce clamping force, the clamping performance is good, and the pipe wrench clamping force that 6kg is heavy can reach more than the 10000NN, is useful in oil, chemical industry and cooperates the toggle machine to beat the back of the body to use, more easy to adjust than existing pipe vice, torsional strength strengthens greatly.

On the utility model pincers handle 9 long handle locking plate 10 is housed, little at moment of torsion, need not beat unluckyly, adjunction pipe lengthen handle just can be as hand tools use on the pincers handle, can do the back-up tong use so the utility model reaches, also can do the hand tools use of unscrewing or tightening pipe.

The utility model is simple and reasonable for structure, volume is little, in light weight, clamping performance height, torsional strength is big, adopts chute and positioning adjust block control pincers handle rotational angle, can prevent effectively that clamping force from crossing the phenomenon of major injury pipe fitting and taking place, safe and reliable, improved operating efficiency greatly, be suitable for the dismounting operation of various pipelines widely.

Claims (4)

1, a kind of pipe wrench, it is provided with binding clip, pincers handle, the pincers handle is hinged in the groove of binding clip rear end by rotating shaft, constitute mutual rotor, fixed teeth is equipped with in binding clip front end inboard, pincers negative winding stem outer rim is equipped with movable tooth, it is characterized in that also being provided with retaining Xiao on the groove of binding clip rear end, also is provided with a slip positioning adjust block on the pincers handle.

2, pipe wrench as claimed in claim 1 is characterized in that said positioning adjust block is fixed on by clamping plate in the groove of pincers handle side, and its bottom surface and pincers handle are provided with the slip teeth of mutual interlock.

3, pipe wrench as claimed in claim 1 is characterized in that on the said pincers handle and the binding clip hinged part is provided with a chute hole, which is provided with two hinge supporting-points.

4, pipe wrench as claimed in claim 1 is characterized in that said pincers handle rear end also is provided with one and adds long handle.