CN103144063B

CN103144063B - Can quick adjustment and location two jaws to dehisce the box spanner of distance

Info

Publication number: CN103144063B
Application number: CN201310090591.1A
Authority: CN
Inventors: 田瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2015-10-07
Anticipated expiration: 2033-03-21
Also published as: CN103144063A

Abstract

Mainly can solve box spanner on current market and regulate two jaws to dehisce distance by rotating nut by the dehisce box spanner of distance of quick adjustment and location two jaws, speed extremely slowly, operates very inconvenient problem.The primary structure of Novel pipe wrench is made up of following part: hand handle, determines jaw, movable clamp port, shell, tail block etc.Structure is simple, and major part number is close with original structure number of packages.Utilize the mutual alignment of change a pair intermeshing tooth bar, regulate and locate two jaws and to dehisce distance, thus simple to operate, fast.All operations only has three actions: (1) drop-down shell, and (2) move left and right shell, and (3) above push away shell.Particularly when needing the clamped workpiece of frequent change different size, more can demonstrate its superiority.Easy to use, be easy to promote.

Description

Can quick adjustment and location two jaws to dehisce the box spanner of distance

Technical field:

The present invention relates to a kind of hand-operated tools that can clamp various shape (particularly cylindrical) workpiece and carry out rotating, especially can according to the size of workpiece, quick adjustment with locate two jaws and to dehisce the box spanner of distance.

Background technology:

At present, known box spanner in use, according to the size of the workpiece that will rotate, two jaws are regulated to dehisce the size of distance, rotate the single head nut on box spanner by thumb and forefinger, drive the screw rod on moving jaw to move up and down, the size of distance thus change two jaws are dehisced.If the pitch T=5mm of nut and screw rod, during the distance L=60mm of adjustment, the number of turns that nut need rotate: N=L/T=60/5=12 encloses, and finger is stirred and turned half-turn, stir 24 repetitive operation and just can complete.Very inconvenient when constructing and keep in repair.

Operating personnel are when using pipe wrench, first two jaws to be regulated to dehisce apart from size according to workpiece size: being lifted by pipe wrench (will by gravity after rotating several lower adjusting nut, otherwise rotating nut is required great effort very much), pipe wrench is taken workpiece place, than trying, look at that whether jaw size of dehiscing is suitable.Not all right, take away box spanner and adjust again and try again, often adjust a size repeatedly to have a competition several times and just can.

For the personnel seldom using box spanner, nut whichaway rotates and makes jaw dehisce to increase, and whichaway rotates and makes jaw dehisce to reduce again, usually repeatedly will try 1 and could determine for twice, thus virtually delay some time again more.Often use a box spanner all will regulate, all can run into same problem.

Patent of invention content:

Dehisce slow apart from speed to overcome existing adjustable pipe pliers two jaws, time taking defect, the utility model provides a kind of new structure, can solve above-mentioned deficiency, claimed structure can not be too complicated again, ensures enough intensity and service life again simultaneously.

Patent of the present invention solves the technology that its technical problem adopts: utilize a pair intermeshing profile of tooth to carry out transmitting torque for triangle tooth bar, these two tooth bars are utilized to separate and after disengaging, the relative position of two tooth bars can be regulated rapidly, and then two jaws can be changed to dehisce the size of distance.(Figure 12).Hand is inclined upwardly (1) sliding way.Gram to collapse (8) (1) has at hand, collapse groove slideway in the upper extrusion two grams of shell (9).

The beneficial effect of patent of the present invention is: all adjustment and positioning wrench jaw are dehisced apart from only completing within one or two second, thus simple to operate, fast.Particularly when needing frequent change to be stepped up workpiece size, more can demonstrate its superiority.Thus greatly save the time of work, improve the efficiency of work.Easy to use, be easy to promote.

Accompanying drawing illustrates:

Below in conjunction with drawings and Examples, patent of the present invention is further illustrated:

Fig. 1: structure chart and two jaws are dehisced the work sheet of greatest limit position.

Fig. 2: two jaws are dehisced the work sheet of least limit position.

Fig. 3: extreme position figure when moving jaw is moved to the left.

Fig. 4: extreme position figure when moving jaw moves right.

Fig. 5: hand is view.Fig. 9: tail blocks up.

Fig. 6: determine jaw.Figure 10: moving jaw force diagram.

Fig. 7: shell view.Figure 11: shell and moving jaw force diagram.

Fig. 8: moving jaw.Figure 12: stereoscopic figure.

Detailed description of the invention:

Patent of the present invention is made up of (Fig. 1) following part: (1) hand handle, (2) tail blocks up, (3) moving jaw, (4) bearing pin, (5) spring, (6) determine jaw, (7) rivet, (8) gram to collapse, (9) shell, (10) dead axle.

Hand has tooth bar and slideway the head of (1) (Fig. 5), for the movement of moving jaw (3), location and transmitting torque.It is width (Fig. 5) in order to reduce box spanner entirety that hand is inclined upwardly upper slideway 4 °, there are again enough spaces to increase the width dimensions of moving jaw (3) root simultaneously, and then improve its bending strength, increase the moment of torsion transmitted.

Determine jaw (6) (Fig. 6) can only do 3 ° of scopes rotation around bearing pin (4), under the pressure of hand, by frictional force, make to press from both sides tighter and tighter to workpiece in the course of the work.

Moving jaw (3) (Fig. 8) is arranged on (Figure 11) on shell, when after shell of leaving behind (9), tooth bar on moving jaw and hand throw off upper tooth bar, at this moment moving jaw and shell can move left and right along the slideway of setting about upwarping 4 ° together, the adjustable distance of dehiscing with determining jaw (6).After determining required size, above push away shell, after the tooth bar on moving jaw is meshed upper tooth bar completely with hand (Fig. 1, Fig. 2), now can apply pressure and torsion to workpiece, rotational workpieces.

The effect of stifled (2) (Fig. 9) of tail is: when adjustment two jaw dehisces distance, the opening angle that it wants restraint jaw and shell to pull down is at about 4 °, after being limited in again two tooth bar engagements, when moment of torsion is applied to workpiece simultaneously, the amount of teetertottering of shell.

Spring (4) be ensure determine jaw (6) in its natural state (when not exerting a force) be always in maximum open configuration.

The effect of gram to collapse (8) is: utilize upper two grams of extruding of shell (9) to collapse groove, article one, be gram slump road during rear adjustment slippage drop-down for shell, another is after adjustment, gram to collapse and enters in chute, have firm effect to shell when above lifting shell.

The force analysis (Figure 10) of moving jaw and shell:

Hand handle and moving jaw all adopt equilateral triangle tooth bar.Operationally, the power acted on moving jaw makes the tooth bar on moving jaw more be adjacent to hand upper tooth bar.When two jaws are dehisced maximum, the moment that moving jaw tooth bar bears is maximum, is carried by 20 teeth; When two jaws are dehisced minimum, the moment that moving jaw tooth bar bears is minimum, is carried by 7 teeth; Each tooth is squeezed and shear stress.Through adjusting, the bearing capacity of two tooth bars is enough.

When two jaws are dehisced maximum, the moment that shell bears is maximum, and the dead axle on shell will have enough intensity.Figure (11), arm of force F: weighing arm P < 1: 2, meanwhile, adopt the logical weldering of argon tungsten-arc welding and plug welding two kinds of modes, as long as by technique welding, would not there is the problem of insufficient strength between shell and dead axle.When two jaws are dehisced very little, the tooth number of two tooth bars engagements is few, and the arm of force " weighing arm, but when having an effect, moving jaw with determine jaw under the action of the spring, be supported on together, thus strengthen the support degree of movable clamp port.

The adjustment of two tooth bar relative positions can only be stepped, is namely tooth pitch integral multiple, can not be gradual change, solve the demand adapting to various different size, (1), movable clamp port and Workpiece clamping face are arc-shaped (outer large in little), difference about 3mm; (2), determine jaw by spring reset, during work under the pressure of hand, determining jaw can rotate around the shaft, plays the regulating action to size.

Claims

1. an energy rapid adjustment and two, location jaws are dehisced the box spanner of distance, comprise hand (1), determine jaw (6), shell (9), moving jaw (3), it is characterized in that: described hand on have an acclivitous slideway, described moving jaw (3) is arranged on shell (9), it is leg-of-mutton tooth bar that the long limit that described hand handle (1) and moving jaw (3) contact is provided with intermeshing thread form, this two tooth bar is utilized to separate and after disengaging, shell (9) and moving jaw (3) can move left and right along slideway, the relative position of two tooth bars can be regulated rapidly, and then the distance of determining jaw and moving jaw and dehiscing can be changed, after two tooth bar engagements, just can transmitting torque, described hand gram to collapse (8) (1) is also provided with, and collapse groove slideway in the upper extrusion two grams of shell (9).

2. according to claim 1ly to dehisce the box spanner of distance by rapid adjustment and location two jaws, it is characterized in that: described shell (9) is provided with tail stifled (2).

3. according to claim 1ly to dehisce the box spanner of distance by rapid adjustment and location two jaws, it is characterized in that: determine jaw (6) and with hand, (1) is linked together by bearing pin (4), determining jaw (6) can rotate around bearing pin (4).