CN105750628B - Forcible entry pincers - Google Patents

Forcible entry pincers Download PDF

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Publication number
CN105750628B
CN105750628B CN201610278418.8A CN201610278418A CN105750628B CN 105750628 B CN105750628 B CN 105750628B CN 201610278418 A CN201610278418 A CN 201610278418A CN 105750628 B CN105750628 B CN 105750628B
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tooth body
crown
forcible entry
cutting edge
reinforcement
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CN105750628A (en
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张诗贺
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/02—Hand-operated metal-shearing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/001—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Cosmetics (AREA)

Abstract

The invention provides one kind forcible entry pincers, it includes being articulated in upper plier handle and lower plier handle together via rotating shaft, upper the tooth body and lower tooth body that be able to can be mutually twisted by the rotation of upper plier handle and lower plier handle are respectively formed with the same side of upper plier handle and lower plier handle, crown is respectively formed with upper tooth body and lower tooth body, S-shaped along its length with the cutting edge of upper tooth body and the formation of lower tooth body.Forcible entry pincers of the present invention are when upper tooth body and the occlusion of lower tooth body, stress concentration is being formed with upper crown and lower crown contact position by forcible entry object, when more than by forcible entry object strength degree when, destroyed first by forcible entry object, form forcible entry breach, reduce the difficulty of cutting, there is good forcible entry effect.The cutting edge of S-shaped adds the contact area of cutting edge and object in what a limited number of space simultaneously, reduces the load that cutting edge is subject to, and reduces the probability of cutting edge damage.

Description

Forcible entry pincers
Technical field
The present invention relates to cutting technique field, more particularly to a kind of forcible entry pincers.
Background technology
The tonger of fire-fighting dedicated hydraulic forcible entry at present has preferably forcible entry cutting power but complicated vice body overall weight is big, One man operation's inconvenience, is unfavorable for popularizing, expensive.And hydraulic disengaging pincers of the prior art are generally linear shearing Sword, the forcible entry wrench structure of said structure is relatively simple, has the following disadvantages in use：(1) must apply when in use compared with Big active force could form cut-out, more arduously；(2) cutting edge is easily passivated in use for some time, is further increased The difficulty of forcible entry.
The content of the invention
In view of this, the present invention is directed to propose a kind of forcible entry clamps, to improve forcible entry ability.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
One kind forcible entry pincers, including upper plier handle and lower plier handle together are articulated in via rotating shaft, in the upper plier handle and lower pincers The same side of handle is respectively formed with upper the tooth body and lower tooth body that be able to can be mutually twisted by the rotation of upper plier handle and lower plier handle, The upper tooth body has upper connection end, and formed with upper crown on tooth body on described, the upper crown is relative to upper connection End arrangement, connects the upper addendum line formed with evagination shape, in the upper addendum line between the upper crown and upper connection end The upper cutting portion that both sides extend formed with class parabolic shape, in the edge of the upper cutting portion formed with cutting edge, it is described on Cutting edge is S-shaped along its length, and both sides cutting edge is intersected at the upper crown, and the upper crown is because with upward Flexure on the inside of tooth body and in hook-shaped；The lower tooth body has lower connection end, formed with lower tooth on the lower tooth body Point, the lower crown arrange that connection is formed with evagination shape between the lower crown and lower connection end relative to lower connection end Lower addendum line, in the lower cutting portion that the both sides of the lower addendum line extend formed with class parabolic shape, in the lower cutting portion Edge forms lower cutting edge, and the lower cutting edge is S-shaped along its length, and both sides lower cutting edge is intersected in the lower crown Place, the lower crown is because with being in hook-shaped to the flexure on the inside of lower tooth body.
Further, the cutting edge is crossed with inner surface by the outer surface of upper cutting portion and formed, the upper cutting portion The surface equation of outer surface be：F (x, y)=- 3.228e-0.16+0.3458x+0.6542y+0.01987x2- 0.01987xy, The inner surface surface equation of the upper cutting portion is：
F (x, y)=0.1091+0.1587x+1.01y+0.1197x2+1.551xy-1.67y2；
The lower cutting edge is crossed by the outer surface of lower cutting portion with inner surface to be formed, and the outer surface of the lower cutting portion is bent Face equation is：F (x, y)=- 1.577e-0.13+0.2232x+0.7768y+0.002106x2-0.002106xy；The lower cutting The inner surface surface equation in portion is：
F (x, y)=1.091-5.918x+11.47y+0.008901x2-0.008901xy。
Further, on the outer surface on upper tooth body, in upper addendum line both sides formed with the first reinforcement；In lower tooth On outer surface on body, in lower addendum line both sides formed with the second reinforcement.
Further, the outer surface surface equation of first reinforcement is：
F (x, y)=- 7.738e-0.17-0.354x+1.354y+0.4049x2-0.4049xy+0.6375x3-0.6375x2y- 0.36x4+0.36x3y；
The outer surface surface equation of second reinforcement is：
F (x, y)=1.983e-0.16+0.2461x+0.7539y+0.09981x2+0.01329xy-0.1131y2。
Further, the location arrangements for corresponding to the first reinforcement in upper tooth body internal surface have two the 3rd reinforcements, 3rd reinforcement crosses and forming V-shape at upper crown；Have in the location arrangements that lower tooth body internal surface corresponds to the second reinforcement Two the 4th reinforcements, the 4th reinforcement cross and forming V-shape at upper crown.
Further, the outer surface surface equation equation of the 3rd reinforcement outer surface is：
F (x, y)=0.2353+0.05428x+0.1842y-0.05408x2+0.05408xy；4th reinforcement outer surface Surface equation be：
F (x, y)=- 3.733e-0.16-0.3104x+1.31y-1.57x2+0.03323xy+1.537y2。
Relative to prior art, the present invention has the advantage that：
Forcible entry pincers of the present invention, forcible entry pincers of the present invention are broken when upper tooth body and the occlusion of lower tooth body Tear object open and forming stress concentration with upper crown and lower crown contact position, when more than by forcible entry object strength degree when, broken Tear object open to destroy first, form forcible entry breach, denticle and the further Joint Implementation of lower denticle are sheared, squeezed on this basis Pressure acts on and make it that object integrally destroys, and reduces the difficulty of cutting, has good forcible entry effect.S-shaped is cut simultaneously Cut sword adds contact of the cutting edge with object in what a limited number of space, reduce the load that cutting edge is subject to, reduce and cut The probability of sword damage is cut, its is simple and reliable for structure, there is good practicality.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the forcible entry pincers described in the embodiment of the present invention；
Fig. 2 is the structural representation of the upper tooth body described in the embodiment of the present invention；
Fig. 3 is the structural representation at another visual angle of the upper tooth body described in the embodiment of the present invention；
Fig. 4 is the structural representation of the lower tooth body described in the embodiment of the present invention；
Description of reference numerals：
1- rotating shafts, 2- upper plier handles, 3- lower plier handles, the upper tooth bodies of 4-, the upper connection ends of 401-, the upper crowns of 402-, cut on 403- Cut portion, 404- cutting edges, 5- lower tooth bodies, connection end under 501-, crown under 502-, cutting portion under 503-, cut under 504- Sword, the reinforcements of 6- first, the reinforcements of 7- second, the reinforcements of 8- the 3rd.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The present embodiment is related to a kind of forcible entry pincers, as shown in figure 1, it includes being articulated in the He of upper plier handle 2 together via rotating shaft 1 Lower plier handle 3, being respectively formed with the same side of upper plier handle 2 and lower plier handle 3 can be because the rotation of upper plier handle 2 and lower plier handle 3 can phase Upper the tooth body 4 and lower tooth body 5 being mutually engaged.
As shown in Fig. 2 upper tooth body 4 has upper connection end 401 in the present embodiment, formed with upper tooth on upper tooth body 4 Point 402, crown 402 is arranged relative to upper connection end 401 on this, between upper crown 402 and upper connection end 401 connection formed with The upper addendum line of evagination shape, in the upper cutting portion 403 that the both sides of upper addendum line extend formed with class parabolic shape, in upper cutting portion 403 edge forms cutting edge 404, and the cutting edge 404 is S-shaped along its length, and both sides cutting edge 404 is handed over It is compiled at crown 402, the upper crown 402 is in hook-shaped because of the flexure with the upward inner side of tooth body 4.
As shown in figure 3, lower tooth body 5 has lower connection end 501 in the present embodiment, formed with lower tooth on lower tooth body 5 Point 502, the lower crown 502 is arranged relative to lower connection end 501, between lower crown 502 and lower connection end 501 connection formed with The lower addendum line of evagination shape, in the lower cutting portion 503 extended in the both sides of lower addendum line formed with class parabolic shape, in lower cutting The edge in portion 503 is formed with lower cutting edge 504, and the lower cutting edge 504 is S-shaped along its length, and both sides lower cutting edge 504 are intersected at lower crown 502, and lower crown 502 is because being in hook-shaped with the flexure to the inner side of lower tooth body 5.
The punched out worn for rotating shaft 1 is respectively equipped with the present embodiment in the articulated section of upper plier handle 2 and lower plier handle 3, this is worn Portal for bar hole, and punched out close to upper plier handle 2 and lower plier handle 3 hold with a firm grip end side inwall on be provided with can countershaft 1 The elastic component of elastic pushing tow, for the ease of arrangement and for the consideration to shear effect, elastic component is disc spring in the present embodiment, During upper plier handle 2 and lower plier handle 3 are engaged, rotating shaft 1 can move along punched out length direction so that upper plier handle 2 and lower plier handle 3 Relative displacement gradually occurs, adds forcible entry effect.The lower evagination of crown 502 is in upper crown 402 in the present embodiment, with the lower tooth Point 502 is starting point, and along the tendency direction of lower cutting edge 504, the outer surface of lower cutting portion 503 has indent in upper cutting portion 403 The concave section on surface, while the inner surface of the end of lower cutting portion 503 is inscribed within the outer surface of the end of cutting portion 403, Ensure upper plier handle 2 and lower plier handle 3 during occlusion, upper cutting portion 503 can form the effect of cutting with lower cutting portion 403.
As shown in Fig. 2 in order to further improve forcible entry ability during upper tooth body 4 and lower tooth body 5 occlusion, the present embodiment Middle cutting edge 404 is crossed by the outer surface of upper cutting portion 403 with inner surface to be formed, the outer surface curved surface side of upper cutting portion 403 Cheng Wei：F (x, y)=- 3.228e-0.16+0.3458x+0.6542y+0.01987x2- 0.01987xy, the interior table of upper cutting portion 403 Face surface equation is：
F (x, y)=0.1091+0.1587x+1.01y+0.1197x2+1.551xy-1.67y2.Similarly, as shown in figure 4, under Cutting edge 504 is crossed by the outer surface of lower cutting portion 5 with inner surface to be formed, and the outer surface surface equation of lower cutting portion 5 is：
F (x, y)=- 1.577e-0.13+0.2232x+0.7768y+0.002106x2-0.002106xy；Lower cutting portion 5 Inner surface surface equation is：
F (x, y)=1.091-5.918x+11.47y+0.008901x2-0.008901xy。
In order to increase the structural strength of upper tooth body 4 and lower tooth body 5, the appearance in the present embodiment on upper tooth body 4 On face, in upper addendum line both sides formed with the first reinforcement 6；On outer surface on lower tooth body 5, in lower addendum line both sides shape Into there is the second reinforcement 7.For the ease of processing, and also to stability when increasing forcible entry, first strengthens in the present embodiment The outer surface surface equation of muscle 6 is：
F (x, y)=- 7.738e-0.17-0.354x+1.354y+0.4049x2-0.4049xy+0.6375x3-0.6375x2y- 0.36x4+0.36x3y；The outer surface surface equation of second reinforcement 7 is：
F (x, y)=1.983e-0.16+0.2461x+0.7539y+0.09981x2+0.01329xy-0.1131y2。
With as the first reinforcement 6, in order to increase the structural strength of upper tooth body 4, as shown in figure 3, in the present embodiment The location arrangements that the upper inner surface of tooth body 4 corresponds to the first reinforcement 6 have two the 3rd reinforcements 8, and the 3rd reinforcement 8 is in upper Crossed and forming V-shape at crown 402.The outer surface surface equation of 3rd reinforcement 8 is：F (x, y)=0.2353+0.05428x+ 0.1842y-0.05408x2+0.05408xy.Similarly, the location arrangements of the second reinforcement 7 are corresponded in the inner surface of lower tooth body 5 There are two the 4th reinforcements, because the 4th reinforcement is identical with the position of the 3rd reinforcement 8, therefore not shown in figure, the 4th adds Strengthening tendons crosses and forming V-shape at upper crown, and the outer surface surface equation of the 4th reinforcement is：
F (x, y)=- 3.733e-0.16-0.3104x+1.31y-1.57x2+0.03323xy+1.537y2.In order to further Shear effect is improved, the basil of cutting edge 404 and lower cutting edge 504 can be 28 °~35 ° in the present embodiment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (6)

1. one kind forcible entry pincers, including upper plier handle and lower plier handle together are articulated in via rotating shaft, in the upper plier handle and lower plier handle The same side be respectively formed with upper the tooth body and lower tooth body that be able to can be mutually twisted by the rotation of upper plier handle and lower plier handle, its It is characterised by：
The upper tooth body has upper connection end, and formed with upper crown on tooth body on described, the upper crown is relative to upper Connection end is arranged, the upper addendum line formed with evagination shape is connected between the upper crown and upper connection end, in the upper tooth top The upper cutting portion that the both sides of line extend formed with class parabolic shape, in the edge of the upper cutting portion formed with cutting edge, institute It is S-shaped along its length to state cutting edge, and both sides cutting edge is intersected at the upper crown, the upper crown is because having Flexure on the inside of upward tooth body and in hook-shaped；
The lower tooth body has lower connection end, and formed with lower crown on the lower tooth body, the lower crown is under Connection end is arranged, the lower addendum line formed with evagination shape is connected between the lower crown and lower connection end, in the lower tooth top The lower cutting portion that the both sides of line extend formed with class parabolic shape, lower cutting edge is formed in the edge of the lower cutting portion, it is described Lower cutting edge is S-shaped along its length, and both sides lower cutting edge is intersected at the lower crown, the lower crown because with to Flexure on the inside of lower tooth body and in hook-shaped.
2. forcible entry pincers according to claim 1, it is characterised in that：The cutting edge by upper cutting portion outer surface with it is interior Surface crosses to be formed, and the surface equation of the outer surface of the upper cutting portion is：F (x, y)=- 3.228e-0 . 16+0.3458x+ 0.6542y+0.01987x2- 0.01987xy, the inner surface surface equation of the upper cutting portion are：
F (x, y)=0.1091+0.1587x+1.01y+0.1197x2+1.551xy-1.67y2；
The lower cutting edge is crossed by the outer surface of lower cutting portion with inner surface to be formed, the outer surface curved surface side of the lower cutting portion Cheng Wei：F (x, y)=- 1.577e-0 . 13+0.2232x+0.7768y+0.002106x2-0.002106xy；The lower cutting portion Inner surface surface equation is：
F (x, y)=1.091-5.918x+11.47y+0.008901x2-0.008901xy。
3. forcible entry pincers according to claim 1 or 2, it is characterised in that：On outer surface on upper tooth body, in upper tooth top Line both sides are formed with the first reinforcement；On outer surface on lower tooth body, strengthen in lower addendum line both sides formed with second Muscle.
4. forcible entry pincers according to claim 3, it is characterised in that：The outer surface surface equation of first reinforcement is：
F (x, y)=- 7.738e-0 . 17-0.354x+1.354y+0.4049x2-0.4049xy+0.6375x3-0.6375x2y- 0.36x4+0.36x3y；
The outer surface surface equation of second reinforcement is：
F (x, y)=1.983e-0 . 16+0.2461x+0.7539y+0.09981x2+0.01329xy-0.1131y2。
5. forcible entry pincers according to claim 3, it is characterised in that：Correspond to the first reinforcement in upper tooth body internal surface Location arrangements have two the 3rd reinforcements, and the 3rd reinforcement crosses and forming V-shape at upper crown；It is corresponding in lower tooth body internal surface There are two the 4th reinforcements in the location arrangements of the second reinforcement, the 4th reinforcement crosses and forming V-shape at upper crown.
6. forcible entry pincers according to claim 5, it is characterised in that：The surface equation of the outer surface of 3rd reinforcement For：F (x, y)=0.2353+0.05428x+0.1842y-0.05408x2+0.05408xy；The song of the outer surface of 4th reinforcement Face equation is：
F (x, y)=- 3.733e-0 . 16-0.3104x+1.31y-1.57x2+0.03323xy+1.537y2。
CN201610278418.8A 2016-04-28 2016-04-28 Forcible entry pincers Active CN105750628B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229881A (en) * 1979-03-02 1980-10-28 Troxel Ronald L Pliers type cutting tool and the like
CN85100983A (en) * 1985-04-01 1986-08-20 武汉化工学院 The excavator prong
JPS62173113A (en) * 1986-01-22 1987-07-30 Misao Matsumoto Shears
DE29703308U1 (en) * 1997-02-15 1998-06-10 NWS Germany Produktion W. Nöthen e.K., 42719 Solingen Cable shears
CN2666629Y (en) * 2004-01-06 2004-12-29 拱昇有限公司 Shearing and cutting tool
CN200961278Y (en) * 2006-10-12 2007-10-17 宁波浙东精密铸造有限公司 Keen bucket tooth
CN105442659A (en) * 2015-12-03 2016-03-30 天津市中机雄风机械有限公司 Excavator bucket tooth

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229881A (en) * 1979-03-02 1980-10-28 Troxel Ronald L Pliers type cutting tool and the like
CN85100983A (en) * 1985-04-01 1986-08-20 武汉化工学院 The excavator prong
JPS62173113A (en) * 1986-01-22 1987-07-30 Misao Matsumoto Shears
DE29703308U1 (en) * 1997-02-15 1998-06-10 NWS Germany Produktion W. Nöthen e.K., 42719 Solingen Cable shears
CN2666629Y (en) * 2004-01-06 2004-12-29 拱昇有限公司 Shearing and cutting tool
CN200961278Y (en) * 2006-10-12 2007-10-17 宁波浙东精密铸造有限公司 Keen bucket tooth
CN105442659A (en) * 2015-12-03 2016-03-30 天津市中机雄风机械有限公司 Excavator bucket tooth

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