CN203092427U

CN203092427U - Multipurpose pawl pipe tongs

Info

Publication number: CN203092427U
Application number: CN 201320104651
Authority: CN
Inventors: 蒋章美
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-07
Filing date: 2013-03-07
Publication date: 2013-07-31
Anticipated expiration: 2023-03-07

Abstract

A pair of multipurpose pawl pipe tongs comprises a handle body, an upper jaw clamp, a pin shaft, a torsion spring, an arc tooth surface embedded block and an upper tooth surface embedded block, wherein the upper jaw clamp is hinged to the handle body through the pin shaft, an assembly groove is formed in the handle body, the torsion spring is arranged in the assembly groove, a driving end of the torsion spring is arranged on the upper jaw clamp, the other end of the torsion spring is arranged at the bottom of the assembly groove, the arc tooth surface embedded block comprises an arc tooth surface and a lower tenon, a lower mortise is arranged at the head of the handle body, the arc tooth surface embedded block is fixed on the handle body through the matching between the lower tenon and the lower mortise, the upper tooth surface embedded block comprises an upper tooth surface and an upper tenon, an upper mortise is formed in the upper jaw clamp, the upper tooth surface embedded block is fixed on the upper paw clamp through the matching between the upper mortise and the upper tenon, the handle body and anti-skid teeth of the upper jaw clamp can be replaced, an entire jaw clamps a pipe from the tooth surfaces in three different directions, sliding is prevented, and the upper jaw clamp is reasonable in structure, light in weight and good in strength. The entire multipurpose pawl pipe tongs are good in performance, low in manufacturing cost, long in service life, and multifunctional.

Description

The ratchet pipe wrench of using more

Technical field

The utility model relates to a kind of pipe wrench, especially a kind of ratchet pipe wrench of using more.

Background technology

Pawl wrench generally is used to tighten or unclamps various nuts, bolt, the water pipe that is threaded or other special-shaped workpiece, the Chinese patent publication number discloses a kind of spanner for " CN1353032A " name is called in the utility model patent of " multi-purpose fast ratchet wrench ", this spanner by handle, collude that shape is pulled mouthful and spring-fixed structure constitutes, its head is semicircle shape, lower head has a strip notch, pull metastomium to hold the shape that colludes that inserts in the notch, and by pin this is colluded shape and pull metastomium and be fixed in the strip notch; Spring-fixed structure mainly is made of spring and two parts of spring steady pin: the spring steady pin crosses the strip notch, become the sufficient fixed pivot that twines on it of spring one end, spring other end foot penetrates and colludes the insertion bar bore portion that shape pulls mouthful and form another fulcrum, and pulling oral belly, back and handle body semicircle shape head all has anti-slop serrations.

But this pawl wrench in use exposes many shortcomings, and its defective is specific as follows:

1, this spanner rely on the handle head the band anti-slop serrations the flank of tooth with collude shape and pull the flank of tooth of mouth and cooperate to come clamping work pieces to prevent sliding stop, the semicircle shape band anti-slop serrations of its handle body head part and handle body and collude the flank of tooth that shape pulls mouthful and whole to collude that shape pulls mouthful all be inseparable integral body, this structure existence two big shortcomings:

1) for the user, pulling oral veutro band anti-slop serrations part is inseparable integral body with pulling oral portion, if service time is long, anti-slop serrations can wear up to gradually and finally lose anti-skidding function, and spanner must be scrapped by whole handle, and the spanner of this moment overwhelming majority position all is good for use, the just anti-slop serrations that damages, therefore this fault of construction has caused losing the greater for less, shorten the service life of spanner, caused great waste.

2) for the producer, in the manufacturing, pull a mouthful mechanical performance if improve, need to adopt quality material, and incorporate design makes and can only wholely make pipe wrench to the unified material of employing, and need the quality material except being positioned at the anti-slop serrations of pulling mouth, other parts adopt general material just can meet the demands, so the material cost that incorporate pawl wrench is selected for use increases greatly.

2, this spanner has only relied on two flank of tooth to come clamping work pieces when work, if the profile angle of workpiece is identical with this jaw of spanner angle, the realization purpose that this spanner can be good, if but the angle difference, as pipe etc., it is just very unreliable to adopt this spanner to clamp.

3, this spanner colludes shape and pulls reset force behind mouthful opening, realize by a torque spring, two arms of torque spring stagger, not not in one plane, camber of spring produces tension force on the one hand and makes and collude shape and pull a mouthful spinning reduction, but produce simultaneously other strength when colluding shape and pulling mouth and reset again, the phenomenon that does not reset once took place to block in the sidewall of scraping fitting recess when it was resetted in the actual use.

When 4, this spanner is positioned at minimal openings, collude shape and pull the centre that the rear portion of mouth rests in the handle body head semicircle shape flank of tooth, make semicircle flank of tooth rear portion mid portion become the strip notch and lose anti-slop serrations, only retain the narrow semi arch flank of tooth in these notch both sides anti-slop serrations is arranged, and this section semi arch flank of tooth clamps the position of maximum gauge workpiece just, the flank of tooth of its clamping work pieces needs maximum, and is existing minimum.

5, this spanner colludes shape to pull the epistome cross section is rectangle, and in big specification spanner, this shape that colludes is pulled and mouthful shown heavy, and it is ineffective to reset.

The utility model content

The purpose of this utility model is to provide a kind of reasonable in design, simple in structure, long service life, low cost of manufacture, clamp firm, in light weight, intensity is good, function is extensive, the quick reliably ratchet pipe wrench of using of work more.

For solving the problems of the technologies described above, the utility model provides a kind of ratchet pipe wrench of using more, comprise the handle body, last jaw, bearing pin and torque spring, offer fitting recess on the described handle body, the described jaw of going up is hinged on the fitting recess of handle body by bearing pin, described torque spring is arranged in the fitting recess, one drive end of torque spring is arranged on the jaw, the other end of torque spring is arranged on the fitting recess, also comprise arc-shaped tooth abaculus and addendum flank abaculus, described arc-shaped tooth abaculus comprises that arc-shaped tooth reaches tenon down, and described handle body head is provided with and the suitable following tongue-and-groove of following tenon, is fixed on the handle body with making the arc-shaped tooth abaculus cooperating of following tongue-and-groove by following tenon;

Described addendum flank abaculus comprises addendum flank and goes up tenon that the described jaw of going up is provided with and the suitable upper tenon groove of last tenon, by upper tenon groove and cooperating of last tenon the addendum flank abaculus being fixed on the jaw.

The utility model improves to be had, described tenon down is arranged on middle part, arc-shaped tooth rear end, following tenon and arc-shaped tooth junction adopt ladder excessive, following tenon is that cross section is the straight tenon head of rectangle, following tongue-and-groove be cross section be rectangle directly to elongated slot, when tenon inserted tongue-and-groove instantly, arc-shaped tooth was pressed on down on the end face of tongue-and-groove wall with the step surface of following tenon junction;

The described tenon of going up is arranged on middle part, addendum flank rear end, last tenon and addendum flank junction adopt ladder excessive, last tenon is that cross section is the straight tenon head of rectangle, upper tenon groove be cross section be rectangle directly to elongated slot, when last tenon inserted upper tenon groove, the step surface of addendum flank and last tenon junction was pressed on the end face of upper tenon groove cell wall.

Concrete, cell wall has enough thickness to satisfy requirement of strength.

The utility model improves to be had, and how also to comprise first fixture and second fixture with the ratchet pipe wrench, adopts first fixture to fix when tenon inserts tongue-and-groove instantly, adopts second fixture to fix when last tenon inserts upper tenon groove.

The utility model improves to be had, described first fixture is the anticreep screw, a described sidewall of tongue-and-groove down is provided with unthreaded hole, described another sidewall of tongue-and-groove down is provided with first screw, described down tenon is provided with through hole, and the anticreep screw passes unthreaded hole and through hole successively and cooperates with first screw and will descend tenon to be fixed on the handle body.

The utility model improves to be had, and described second fixture comprises holding screw, and sidewall of upper tenon groove is provided with the tightening screw, and holding screw holds out against tenon by the tightening screw is fixed on the jaw tenon.

The utility model improves to be had, and described addendum flank is the V-type flank of tooth, and the openend of the V-type flank of tooth is towards the handle body.

The utility model improves to be had, and the tooth angle of described arc-shaped tooth and addendum flank is less than 90 °, the setting that slopes inwardly of the tooth angle of described arc-shaped tooth and the tooth angle of addendum flank.

The utility model improves to be had, unload tenon screw with first of tongue-and-groove under tenon is released down many also comprising with the ratchet pipe wrench, described handle body is provided with second screw that communicates with following tongue-and-groove, and described first unloads the tenon screw is arranged in second screw, and first end that unloads the tenon screw is against down on the tenon.

The utility model improves to be had, how to comprise also that with the ratchet pipe wrench last tenon is released second of upper tenon groove unloads the tenon screw, the described jaw of going up is provided with the 3rd screw that communicates with upper tenon groove, and described second unloads the tenon screw is arranged in the 3rd screw, and second end that unloads the tenon screw is against on the tenon.

The utility model improves to be had, and how also to comprise spacer pin with the ratchet pipe wrench, and described torque spring is for placing side by side double torsion spring, and described spacer pin is arranged on the root top of placing side by side the double torsion spring underarm, and the restraining spring underarm moves at the bottom of can only pressing close to fitting recess.

Place side by side the double torsion spring upper arm ends and connect upward jaw postbrachium, moving double torsion spring upper arm and the underarm variable angle of placing side by side of last jaw rotating band, therefore the spring tension that produces withstands jaw all the time, makes the opening of formation pipe wrench clamping work pieces between the addendum flank abaculus of jaw and the handle body head arc-shaped tooth abaculus.

The beneficial effects of the utility model are: the ratchet pipe wrench of using of new structure more, handle body and the anti-slop serrations of going up on the jaw can load and unload replaceable, for the user, the jaw anti-slop serrations wears up to the time spent again, and spanner can not scrapped, as long as change two abaculus, for the producer, select quality material to improve the quality, as long as two abaculus are selected quality material, remainder is still used common material, just can achieve the goal, whole jaw is prevented sliding stop by the flank of tooth clamping tube of three different directions, and last jaw is rational in infrastructure, in light weight, intensity is good, new adopt place side by side double torsion spring compact conformation symmetry, good springiness does not have other strength, performance is good, low cost of manufacture, long service life, function is extensive, and it is fast and reliable to work.

Description of drawings

Accompanying drawing 1 is many front views with the ratchet pipe wrench of the present utility model;

Accompanying drawing 2 is many vertical views with the ratchet pipe wrench of the present utility model;

Accompanying drawing 3 is many A-A cutaway views with the ratchet pipe wrench of the present utility model;

Accompanying drawing 4 is many B-B cutaway views with the ratchet pipe wrench of the present utility model;

Accompanying drawing 5 is many C-C cutaway views with the ratchet pipe wrench of the present utility model.

Label declaration: 1-handle body; The 11-fitting recess; Tongue-and-groove under the 12-; The last jaw of 2-; The 21-upper tenon groove; The 3-torque spring; The 31-spacer pin; 4-arc-shaped tooth abaculus; The 41-arc-shaped tooth; Tenon under the 42-; 5-addendum flank abaculus; The 51-addendum flank; The last tenon of 52-; The 6-bearing pin; 7-first fixture; 8-second fixture; 9-first unloads the tenon screw; 10-second unloads the tenon screw.

The specific embodiment

By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

See also Fig. 1 to accompanying drawing 4, a kind of ratchet pipe wrench of using that the utility model provides shown in the accompanying drawing more, comprise handle body 1, bearing pin 6, last jaw 2 and torque spring 3, the described jaw 2 of going up is hinged on the handle body 1 by bearing pin 6, offer fitting recess 11 on the described handle body 1, described torque spring 3 is arranged in the fitting recess 11, one drive end of torque spring 3 is arranged on the jaw 2, the other end of torque spring 3 is arranged on the fitting recess, how also to comprise arc-shaped tooth abaculus 4 and addendum flank abaculus 5 with the ratchet pipe wrench, described arc-shaped tooth abaculus 4 comprises that arc-shaped tooth 41 reaches tenon 42 down, described handle body 1 head is provided with the following tongue-and-groove 12 suitable with following tenon 42, is fixed on the handle body 1 with making arc-shaped tooth abaculus 4 cooperating of following tongue-and-groove 12 by descending tenon 42;

Described addendum flank abaculus 5 comprises addendum flank 51 and goes up tenon 52, and the described jaw 2 of going up is provided with the upper tenon groove 21 suitable with last tenon 52, by upper tenon groove 21 and cooperating of last tenon 52 addendum flank abaculus 5 being fixed on the jaw 2.

Concrete, fitting recess 11 is arranged on the handle body 1, the size that is provided with can the ccontaining postbrachium of going up jaw 2, and torque spring 3 also is arranged in the fitting recess 11, and last jaw 2 is hinged on the handle body 1, and pin joint is arranged in the fitting recess 11 in the present embodiment, run through handle body 1 by bearing pin 6 and reach the axis hole of going up jaw 2, handle body 1 is motionless with bearing pin 6, and last jaw 2 can rotate around bearing pin 6, and going up jaw 2 in the present embodiment can be around bearing pin 6 rotations greater than 90 °.

The ratchet pipe wrench of using of new structure when normal the use more, following tenon 42 inserts tongue-and-groove 12 down, last tenon 52 inserts upper tenon groove 21, rely on arc-shaped tooth 41 and cooperating of addendum flank 51 to realize the dismounting of various workpiece afterwards, in use for some time, promptly may wear to when losing antiskid function when anti-slop serrations, arc-shaped tooth abaculus 4 and addendum flank abaculus 5 are extracted out in following tongue-and-groove 12 and upper tenon groove 21, and arc-shaped tooth abaculus 4 that more renews and addendum flank abaculus 5, promoted many service lifes greatly with the ratchet pipe wrench.

In the present embodiment, with reference to accompanying drawing 3, described tenon 42 down is arranged on the middle part, rear end of arc-shaped tooth 41, and following tenon 42 adopts ladder excessive with the junction of arc-shaped tooth 41, the thickness of following tongue-and-groove 12 is adaptive with following tongue-and-groove 12 width, and step surface is pressed on down on the sidewall end face of tongue-and-groove 12 during assembling.

With reference to accompanying drawing 4, the described tenon 52 of going up is arranged in the middle part of the rear end of addendum flank 51, and last tenon 52 adopts ladder excessive with the junction of addendum flank 51, and the thickness of upper tenon groove 21 and upper tenon groove 21 width are adaptive, and step surface is pressed on the sidewall end face of upper tenon groove 21 during assembling.

In above-mentioned two kinds of assembling modes, described upper tenon groove 21 and following tongue-and-groove 12 are directly to elongated slot, upper tenon groove 21 is rectangle with the cross section of following tongue-and-groove 12, cell wall is provided with adequate thickness, in order to guarantee bending strength, further, after assembling, there are certain clearance in last tenon 52 and upper tenon groove at 21 the end, the step surface that is addendum flank is close on the upper tenon groove 21 cell wall end faces, also there is certain clearance in following tenon 42 with following tongue-and-groove 12 bottom lands, the step surface that reaches arc-shaped tooth 41 is close to down on the tongue-and-groove 12 cell wall end faces, and therefore, whole pipe wrench in use, the power that acts on arc-shaped tooth 41 and the addendum flank 51 can all be pressed on the groove top by step surface, makes whole pipe wrench more reasonable stress.

In the present embodiment, can directly adopt interference fit tenon 52 and upper tenon groove 21 and the tenon 42 and following tongue-and-groove 12 down gone up fastened to each other, realize tight fit each other, when the needs dismounting and change, by stage property will go up tenon 52 and under tenon 42 extract.

Certainly, cooperation between the two also can be an interference fits, and interference fits refers to have the cooperation of gap or interference.

When both adopt interference fits, in order to make upper tenon groove 21 and last tenon 52 and tongue-and-groove 12 and following tenon 42 fixations down, in the present embodiment, how also to comprise first fixture 7 and second fixture 8 with the ratchet pipe wrench, adopt first fixture 7 fixing when tenon 42 inserts down tongue-and-groove 12 instantly, when last tenon 52 inserts upper tenon grooves 21, adopt second fixture 8 fixing.

Among one embodiment, with reference to accompanying drawing 1 and accompanying drawing 2, described first fixture 7 is the anticreep screw, a described sidewall of tongue-and-groove 12 down is provided with unthreaded hole, described another sidewall of tongue-and-groove 12 down is provided with first screw, described down tenon 42 is provided with through hole, and the anticreep screw passes unthreaded hole and through hole successively and cooperates with first screw and will descend tenon 42 to be fixed on the handle body 1.

After the anticreep screw is fixed on first screw by threaded engagement, under firm being fixed on of following tenon 42 in the tongue-and-groove 12, be whole arc-shaped tooth abaculus 4 firm being fixed on the handle body 1, certainly, adopting the anticreep screw is a kind of technical scheme, do not limit the concrete form of first fixture 7 in the utility model, among other embodiment, also can adopt other modes fixing tenon 42 and following tongue-and-groove 12 down, for example adopt bolts and nuts to cooperate, promptly descend on two sidewalls of tongue-and-groove 12 and all be set to unthreaded hole, screw bolt passes one unthreaded hole, through hole, another unthreaded hole and final the cooperation with nut are fixed on the handle body 1, can certainly adopt that pin is fixed etc.

In the present embodiment, with reference to accompanying drawing 1 and accompanying drawing 2, second fixture 8 is a holding screw, a sidewall of upper tenon groove 21 is provided with the tightening screw, when last tenon 52 inserted upper tenon groove 21, holding screw held out against tenon 52 by the tightening screw, with anti-loose, certain second positioner also can adopt the technical scheme of above-mentioned first positioner, does not do concrete restriction in the utility model.

In the present embodiment, described addendum flank 51 is the V-type flank of tooth, and the openend of the V-type flank of tooth is towards handle body 1.

Concrete, in the present embodiment, arc-shaped tooth 41 occupies down up, and down, the angle of V-type flank of tooth drift angle was 120 ° on the V-type flank of tooth occupied, therefore the V-type flank of tooth is actually the flank of tooth of two different directions, it is relative up and down with arc-shaped tooth, and three flank of tooth have constituted jaw, are used for holding workpiece, because three points can determine a circle, therefore adopt effectively clamping work pieces of this mode.As the pipe class workpiece that conventional spanner can't clamp, the clamping that novel spanner also can be firm.

In the present embodiment, arc-shaped tooth 41 slopes inwardly with the profile of tooth of the anti-slop serrations of the V-arrangement flank of tooth, and tooth angle is less than 90 °, can reach best skidproof effect, when this structure and other respective outer side edges, realize that external force screws or during unscrewing screw connector, promptly implement positive pressure, external force is big more, and jaw is tight more with regard to what press from both sides to workpiece, when implementing reverse external force, when adjusting the operating position of pipe wrench, will unclamp automatically, make pipe wrench easily arrive new operating position, realize continuous operation.

Following tongue-and-groove 12 can directly communicate with fitting recess 11, makes the easy to process of handle body 1, determines the structure of tongue-and-groove 12 and following tongue-and-groove 12 down according to handle body 1 and the concrete shape that goes up jaw 2.

In the present embodiment, with reference to accompanying drawing 1 and accompanying drawing 2, unload tenon screw 9 with first of tongue-and-groove 12 under tenon 42 is released down described many also comprising with the ratchet pipe wrench, described handle body 1 is provided with second screw that communicates with following tongue-and-groove 12, described first unloads tenon screw 9 is arranged in second screw, and first end that unloads tenon screw 9 is against down on the tenon 42.

In like manner, unload tenon screw 10 with second of last tenon 52 release upper tenon grooves 21 described many also comprising with the ratchet pipe wrench, the described jaw 2 of going up is provided with the 3rd screw that communicates with upper tenon groove 21, described second unloads tenon screw 10 is arranged in the 3rd screw, and second end that unloads tenon screw 10 is against on the tenon 52.

Unload the tenon screw by two and can dismantle tenon 52 and following tenon 42 easily, concrete, unloading tenon screw 9 with first is example, when tenon 42 is descended in the needs dismounting, unload tenon screw 9 toward inward turning with first, first unloads tenon screw 9 will descend tenon 42 to release tongue-and-groove 12 down, and the user can pull down arc-shaped tooth abaculus 4 easily.

In the present embodiment, how also to comprise spacer pin 31 with the ratchet pipe wrench, described torque spring 3 is for placing side by side double torsion spring, and described spacer pin 31 is arranged on the root top of placing side by side the double torsion spring underarm.

Concrete, with reference to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 5 described upper arm of placing side by side double torsion spring are both arms, and it is separately independently of one another, all there is clubfoot on the both arms top, bending direction relatively inwards, 90 ° of angle of bend, last jaw 2 postbrachiums are provided with small through hole, upper arm is inserted in its small through hole from last jaw 2 postbrachium both sides, two steel wires of spring underarm connect together into the disjunctor arm, be inserted in bearing pin 6 belows, underarm is pressed in the bottom of handle body 1 fitting recess 11, and spacer pin 31 is arranged on down the arm roots top, having limited the spring underarm can only press close to handle body 1 fitting recess 11 bottom surfaces and move, last jaw 2 rotations drive places side by side double torsion spring upper arm and underarm variable angle, and spring tension withstands jaw 2 all the time, and it is resetted, place side by side the double torsion spring symmetrical configuration, so it is zero that other strength is cancelled out each other, and has only both arms tension force force action on center line, helps jaw 2 smooth and easy resetting.

Place side by side the set-up mode of double torsion spring and in the utility model, do not do concrete restriction, mainly provide and drive the variable angle of placing side by side between double torsion spring upper arm and the underarm after jaw 2 rotates, thereby generation restoring force, therefore placing side by side being provided with of double torsion spring can be multiple structure, for example, in one embodiment, described upper arm of placing side by side double torsion spring is arranged on the jaw 2, consistent with said structure, its underarm directly is fixed on the handle body 1, for example offers fixing hole on the handle body 1, the underarm bottom is directly passed fixing hole and is fixed, perhaps lower arm ends is wrapped on the spacer pin, and in the another kind of scheme, the described double torsion spring of placing side by side is oppositely installed, this moment, upper arm was made along the bending of bearing pin direction, still be arranged on the jaw, underarm oppositely stretches to handle body end direction, and spacer pin is still above following arm roots, when last jaw rotates, drive upper arm promotion spring energy-storage circle and move forward, said structure all can be realized the underarm variable angle, produces back stretch.

Handle body 1 is provided with fixed axis, and the underarm winding is on fixed axis.

In the present embodiment, the cross section of the front end of described last jaw 2 is a T-shape, makes whole last jaw 2 in light weight, bending resistance is good, and it is smooth and easy flexibly around bearing pin 6 rotations to go up jaw 2, and further, last jaw 2 rear walls are designed to arc, make it stride across arc-shaped tooth, insert fitting recess 11 at camber flank of tooth rear portion, guarantee that arc-shaped tooth is perfect, make the ratchet pipe wrench of using more when the pipe of clamping maximum gauge, when being the jaw maximum open, maximum flank of tooth clamping tube is arranged.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. use the ratchet pipe wrench one kind more, comprise the handle body, last jaw, bearing pin and torque spring, offer fitting recess on the described handle body, the described jaw of going up is hinged on the fitting recess of handle body by bearing pin, described torque spring is arranged in the fitting recess, one drive end of torque spring is arranged on the jaw, the other end of torque spring is arranged on the fitting recess, also comprise arc-shaped tooth abaculus and addendum flank abaculus, described arc-shaped tooth abaculus comprises that arc-shaped tooth reaches tenon down, described handle body head is provided with and the suitable following tongue-and-groove of following tenon, is fixed on the handle body with making the arc-shaped tooth abaculus cooperating of following tongue-and-groove by following tenon;

2. the ratchet pipe wrench of using according to claim 1 more, it is characterized in that, described tenon down is arranged on middle part, arc-shaped tooth rear end, following tenon and arc-shaped tooth junction adopt ladder excessive, following tenon is that cross section is the straight tenon head of rectangle, following tongue-and-groove be cross section be rectangle directly to elongated slot, when tenon inserted down tongue-and-groove instantly, arc-shaped tooth was pressed on down on the end face of tongue-and-groove wall with the step surface of following tenon junction;

3. the ratchet pipe wrench of using according to claim 2 more, it is characterized in that, also comprise first fixture and second fixture, adopt first fixture to fix when tenon inserts tongue-and-groove instantly, when last tenon inserts upper tenon groove, adopt second fixture to fix.

4. the ratchet pipe wrench of using according to claim 3 more, it is characterized in that, described first fixture is the anticreep screw, a described sidewall of tongue-and-groove down is provided with unthreaded hole, described another sidewall of tongue-and-groove down is provided with first screw, described down tenon is provided with through hole, and the anticreep screw passes unthreaded hole and through hole successively and cooperates with first screw and will descend tenon to be fixed on the handle body.

5. use ratchet pipe wrench according to claim 3 more, it is characterized in that described second fixture comprises holding screw, sidewall of upper tenon groove is provided with the tightening screw, and holding screw holds out against tenon by the tightening screw is fixed on the jaw tenon.

6. use ratchet pipe wrench according to claim 1 more, it is characterized in that described addendum flank is the V-type flank of tooth, the openend of the V-type flank of tooth is towards the handle body.

7. use ratchet pipe wrench according to claim 6 more, it is characterized in that the tooth angle of described arc-shaped tooth and addendum flank is less than 90 °, the tooth angle of described arc-shaped tooth and the tooth angle of addendum flank are obliquely installed.

8. the ratchet pipe wrench of using according to claim 1 more, it is characterized in that, also comprise first of tongue-and-groove under tenon is released is down unloaded the tenon screw, described handle body is provided with second screw that communicates with following tongue-and-groove, described first unloads the tenon screw is arranged in second screw, and first end that unloads the tenon screw is against down on the tenon.

9. the ratchet pipe wrench of using according to claim 1 more, it is characterized in that, comprise that also last tenon is released second of upper tenon groove unloads the tenon screw, the described jaw of going up is provided with the 3rd screw that communicates with upper tenon groove, described second unloads the tenon screw is arranged in the 3rd screw, and second end that unloads the tenon screw is against on the tenon.

10. the ratchet pipe wrench of using according to claim 1 more, it is characterized in that also comprise spacer pin, described torque spring is for placing side by side double torsion spring, described spacer pin is arranged on the root top of placing side by side the double torsion spring underarm, and the restraining spring underarm moves at the bottom of can only pressing close to fitting recess.