CN109551043A

CN109551043A - The puncture tip plug-in unit and end head accessory cut are cut and are removed in dismounting

Info

Publication number: CN109551043A
Application number: CN201811181935.9A
Authority: CN
Inventors: 丹尼尔·P·雅各布森; 查德·沃德; 丹尼尔·J·里哈拉; 史蒂文·T·勒托
Original assignee: Genesis Attachments LLC
Current assignee: Genesis Attachments LLC
Priority date: 2013-04-09
Filing date: 2013-04-09
Publication date: 2019-04-02
Anticipated expiration: 2033-04-09
Also published as: WO2018045939A1; CN109199701B; CN107397628A; CN106361506A; CN107625583B; CN109568012A; CN107625583A; CN107397628B; CN109568012B; CN208447937U; CN109199701A; CN109551043B

Abstract

A kind of dismounting is cut and for removing the puncture tip plug-in unit and end head accessory cut, make puncture tip plug-in unit in the case where the situation that is disturbed and puncture tip plug-in unit occur interrupted, puncture tip plug-in unit and end head accessory can be reduced end head abrasion and resist the retraction force being applied on puncture tip plug-in unit.Dismounting cuts that it is necessary to puncture tip plug-in unit and end head accessory is arranged, in the case where puncture tip plug-in unit is disturbed situation and puncture tip plug-in unit and occurs interrupted, to reduce end head abrasion and resist the retraction force being applied on puncture tip plug-in unit.

Description

The puncture tip plug-in unit and end head accessory cut are cut and are removed in dismounting

The application is application No. is 201380077298.X, and the applying date is on April 9th, 2013, and invention and created name is " to tear open Except cutting and remove the puncture tip plug-in unit and end head accessory cut " application for a patent for invention divisional application.

Technical field

The present invention relates to a kind of dismountings to cut and remove the puncture tip plug-in unit and end head accessory cut.

Background technique

Dismounting is cut it is necessary to which puncture tip plug-in unit and end head accessory is arranged, and is inserted so as to be disturbed situation and puncture tip in puncture tip plug-in unit Part occurs to can be reduced end head abrasion in interrupted situation and resists the retraction force being applied on puncture tip plug-in unit.

Detailed description of the invention

Fig. 1 is the right perspective view (checking from operator position) for removing the one embodiment for cutting attachment.

Fig. 2 is that the left perspective view for cutting attachment is removed shown in Fig. 1.

Fig. 3 A-3C be Fig. 1 shown in remove cut attachment in exemplary operation state shear operating process upper jaw relative under The movement of jaw.

Fig. 4 is that the exploded perspective view for cutting the jaw pivot of attachment is removed shown in Fig. 1.

Fig. 5 is that the jaw enlarged drawing for cutting attachment is removed shown in Fig. 1.

Fig. 6 has removed blade plug-in unit and puncture tip plug-in unit as position shown in Fig. 5.

Fig. 7 is that the enlarged drawing for cutting the jaw of attachment is removed shown in Fig. 2.

Fig. 8 is the perspective view of lower jaw shown in Fig. 1, has removed upper jaw in this view and has cut so that blade side is better shown Cutting edge plug-in unit and guide blade plug-in unit.

Fig. 9 is another perspective view of lower jaw shown in Fig. 1, has removed upper jaw in this view so that guiding is better shown Side guide blade plug-in unit and horizontal blade plug-in unit.

Figure 10 has removed blade plug-in unit and puncture tip plug-in unit as position shown in Fig. 7.

Figure 11 show lower jaw shown in Fig. 9, and blade plug-in unit has been removed in this view.

Figure 12 show the different angle view of one embodiment of shear-blade plug-in unit, and wherein Figure 12 A is preceding perspective view, Figure 12 B is front view, and Figure 12 C is side view, and Figure 12 D is rearview.

Figure 13 show the different angle view of one embodiment of guide blade plug-in unit, and wherein Figure 13 A is preceding perspective view, Figure 13 B is front view, and Figure 13 C is side view, and Figure 13 D is rearview.

Figure 14 show the different angle view of one embodiment of horizontal blade plug-in unit, and wherein Figure 14 A is preceding perspective view, figure 14B is rear perspective view, and Figure 14 C is side view, and Figure 14 D is front view, and Figure 14 E is rearview.

Figure 15 show the different angle view of one embodiment of blade side puncture tip half, and wherein Figure 15 A is preceding solid Figure, Figure 15 B are rear perspective view, and Figure 15 C is front view, and Figure 15 D is outer side view, and Figure 15 E is inner side view.

Figure 16 show the different angle view of one embodiment of guiding side puncture tip half, and wherein Figure 16 A is preceding solid Figure, Figure 16 B are rearview, and Figure 16 C is front view, and Figure 16 D is medial elevational view, and Figure 16 E is lateral elevational view.

Figure 17 is that the perspective view for cutting the upper jaw of attachment is removed shown in Fig. 1, the end of puncture tip plug-in unit and upper jaw in this view Exploded view after headstock is separated.

Figure 18 is the enlarged side view that the upper jaw and lower jaw of cutting attachment are removed shown in Fig. 1, and upper jaw is in and beats completely Open state.

Figure 19 is the enlarged side view that the upper jaw and lower jaw of cutting attachment are removed shown in Fig. 1, and upper jaw is in part and closes Conjunction state.

Figure 20 is the enlarged side view that the upper jaw and lower jaw of cutting attachment are removed shown in Fig. 1, and upper jaw will probe into down The slit of jaw.

Figure 21 is the enlarged side view that the upper jaw and lower jaw of cutting attachment are removed shown in Fig. 1, and upper jaw is closed completely simultaneously Probe into the slit of lower jaw.

Figure 22 is the enlarged side view of upper jaw and lower jaw, shows and acts in puncture tip under the situation that is disturbed Power.

Figure 23 is the enlarged side view of upper jaw and lower jaw, shows and acts in puncture tip under another disturbed condition Power.

Figure 24 be upper jaw and lower jaw enlarged side view, illustrate in the case where puncture tip plug-in unit upper end is interrupted by The power in puncture tip is acted on caused by the abrasion of upper jaw end head base material.

Specific embodiment

Refering to attached drawing, number designation meaning is same parts and its corresponding component in multiple views in figure.Such as Fig. 1 and It is respectively to remove right and left (from the position of the operator) perspective view for cutting attachment 10 shown in Fig. 2.Attachment 10 is cut in dismounting to be had Main body 12, main body 12 are equipped with front end 14 and rear end 16.By being closed as known to rotary attachment 19 or other skilled in the art Suitable fitting attachments, rear end 16 may be mounted on the sunpender or rod piece 18 of excavator (see Fig. 3 A).The front end 14 of main body 12 is arranged There are mobilizable upper jaw 40 and fixed lower jaw 42 (being described in detail hereinafter).

Fig. 3 A-3C show dismounting cut attachment 10 be mounted on the sunpender or rod piece 18 of excavator and be located at typical condition position Place is set, closing motion of the upper jaw 40 during object 11 is sheared relative to lower jaw 42 is shown.Object 11 is Optional construction part, as steel I-beam or channel steel, steel plate, pipe fitting or other materials such as old metal, sheet metal or any other be suitble to The object or material of processing or processing are cut with dismounting.

As shown in Figs 1-4, main body 12 is usually collectively formed by steel side plate 20, steel side plate 22, top plate 24 and bottom plate 26, is formed One substantially closed region, removes the hydraulic actuator 30 (see Fig. 3 A-3C) for cutting attachment 10 and other hydraulic components exist substantially Protection is closed in the region.Hydraulic actuator 30 passes through actuator pivot pin 32 through steel side plate 20 and steel side plate 22, interior Gusset (not shown) and cylinder rod fork 34 are hingedly secured to rear end in main body 12.The front end of hydraulic actuator 30 passes through The cylinder pin 36 for protruding into cylinder body fork 38 and cylinder pin hole 39 (while refering to fig. 1 7) is hingedly arranged on mobilizable upper jaw 40, Middle cylinder body fork 38 and cylinder pin hole 39 are set on the rear leaf of upper jaw 40.Therefore, according to the present embodiment, hydraulic actuator 30 is such as Extend contraction shown in Fig. 3 A-3C like that, so that upper jaw 40 can be rotated around the longitudinal axis of 60 (described below) of jaw pintle assembly To realize that upper jaw 40 is opened and closed relative to lower jaw 42.Manhole with inspection door 25 (see Fig. 2) is set in top plate To realize installation, maintenance, service and the maintenance of the hydraulic actuator and other components of hydraulic system inside main body 12.

Fig. 4, Fig. 8 and Fig. 9 are best shown, the jaw boss 44,46 of each side in 12 front end of main body 14 respectively include hub bore 48, 50.Jaw pintle assembly 60 is placed in hub bore 48,50 and is pivotally supported upper jaw 40 by pivot hole 54 (see Figure 17).

Jaw pintle assembly 60 includes the flanged bushing 56,58 in hub bore 48,50.Main shaft 62 is fitted in pivot hole As upper jaw 40 rotates in 54.Main shaft 62 includes centre bore 64, and the tie-rod 66 with the end of thread 68 is set in centre bore 64. End cap 70,72 is fixed on flanged bushing 56,58 and threadably by the nipple that hole is aligned by protruding into flanged bushing 56,58 In internal screw thread alignment hole on boss 44,46.Tie rod nuts 74 are set to the end of thread 68 of tie-rod 66 by screw thread.Pass through spiral shell Tie rod nuts 74 are fixed on end cap 70,72 by the nipple that line is set to flanged bushing 56,58 internal screw threads are aligned in hole.According to Shown in the present embodiment, tie-rod 66 and tie rod nuts 74 are laterally limiting and hub 48,50 is prevented to be applied to jaw in shearing manipulation On lateral force influence.

Fig. 4 and Fig. 8 are best shown, and lateral jaw stablizes disc assembly 80, such as 7,216, No. 575 disclosures of U.S. Patent No. Invention, can be with the wearing plate or wear-resistant surface 82 (see Figure 17) of the matching for the adjacent side for being located at upper jaw 40 together for anti-upper pincers In shearing manipulation transverse shifting occurs for mouth 40, until upper jaw protrudes into 96 (described below) of slit of lower jaw 42.

As shown in Figure 11-Figure 5, lower jaw 42 include extend forward, lateral spacing and substantially parallel jaw beam 90,92 and The crossbeam 94 being laterally extended between the jaw beam 90,92 of lateral spacing.Jaw beam 90,92 and the crossbeam 94 together shape of lateral spacing At slit 96, in shear history (see Fig. 3 C and Fig. 4), upper jaw 40 is placed into slit 96.As detailed below, will extend forward Jaw beam 90 for be arranged shear-blade plug-in unit and guide blade plug-in unit and below referred to as blade side jaw beam 90.It will be another The one jaw beam 92 extended forward be used for for lower jaw provide the rigidity of structure and shear history it is laterally limiting, guide upper jaw stretch Enter slit 96, is referred to as guiding side jaw beam 92 below.

If Figure 10 is best shown, the inside of blade side jaw beam 90 includes shear knife bar 100, shear knife bar 100 For the shear-blade plug-in unit 110 (such as Fig. 7 and Fig. 8) of one group of hardening steel to be arranged.Shear-blade plug-in unit 110 as shown in figure 12 A kind of embodiment.Each shear-blade plug-in unit 110 have substantially planar vertical wear-resistant surface 114,116 and planar horizontal wear-resistant surface 118, 120.Vertical wear-resistant surface and planar horizontal wear-resistant surface are crossed to form four cutting edges 122.Shear-blade plug-in unit 110, which has, to be constituted in parallel The parallel angled end-face 124,126 of quadrilateral structure, in this way when shear-blade plug-in unit 110 position and be oriented in shear knife bar When in 100, adjacent face is mutually relied at downward tip (see Fig. 7 and Fig. 8).According to the present embodiment, due to shearing Blade plug-in unit 110 is all parallelepiped-shaped, so shear-blade plug-in unit 110 can be in shear knife bar 100 opposite to each other Ground rotation and orientation, so that in use all four cutting edges 122 all can serve as cutting edge come using.Plane is vertical Wear-resistant surface 114,116 include countersunk 130, for by nipple 132 (preferably soket head cap screw) be placed in countersunk 130 with Shear-blade plug-in unit 110 is removably mounted in shear knife bar 100.The head of nipple 132 can be located at countersunk In 130.Countersunk 130 and alignment hole 134 (see Figure 10) of the thread head of nipple 132 on shear knife bar 100, And it is fixed by nut 136 (referring to Fig. 5 and Fig. 9), wherein nut 136 is located at the countersunk 138 in 90 outside of blade side jaw beam.

If Figure 10 is best shown, the inside of blade side jaw beam 90 further includes guide knife bar 200, is used to be arranged hard Change the guide blade plug-in unit 210 (showing see best angle in Fig. 8) of steel.One kind of guide blade plug-in unit 210 as shown in figure 13 Embodiment.Each guide blade plug-in unit 210 has substantially planar vertical wear-resistant surface 214,216 and planar horizontal wear-resistant surface 218,220. Vertical wear-resistant surface and planar horizontal wear-resistant surface are crossed to form four cutting edges 222.Guide blade plug-in unit 210, which has, constitutes parallel four side The parallel angled end-face 224,226 of shape structure.The angled end-face 224,226 of guide blade plug-in unit 210 is oblique with shear-blade plug-in unit 110 End face 124,126 is complementary, so when guide blade plug-in unit 210 is positioned and oriented in guide knife bar 200, end face 224, A 226 wherein end face will rest against the end face 124,126 for the shear-blade plug-in unit 110 (illustrated best is shown in Fig. 8) being disposed adjacent Wherein on an end face.According to the present embodiment, since guide blade plug-in unit 210 is all parallelepiped-shaped, so guide knife Piece plug-in unit 210 can rotate in guide knife bar 200 (being also changed to following guiding side guide knife bars 300) and orientation, Make so in use all four cutting edges 222 all can serve as cutting edge come using.Wear-resistant surface 214,216 includes vertically Nipple 232 (such as bolt) is placed in threaded hole 230 with can by guide blade plug-in unit 210 by the threaded hole 230 of internal tapping Detachable is mounted in guide knife bar 200.Alignment of the thread head of nipple 232 through 90 outside of blade side jaw beam In countersunk 234 (Fig. 5 and Fig. 9), and the inside tapping thread hole 230 by being threaded into guide blade plug-in unit 210.

If Fig. 9 and 11 are best shown, guiding side jaw beam 92 further includes guide knife bar 300 (see Figure 11), is used for The guide blade plug-in unit 210 being equally used on blade side guide knife bar 200 is set, and such guide blade plug-in unit 210 can be It is exchanged between guiding side guide knife bar 300 and blade side guide knife bar 200.Therefore, using with blade side guide knife bar 200 substantially similar ways, by identical nipple 232 (such as bolt) through the alignment countersunk in 92 outside of guiding curb girder 334 (Fig. 7, Fig. 8 and Figure 10) and the threaded hole 230 for being threaded into guide blade plug-in unit 210, can make 210 quilt of guide blade plug-in unit It remains fixed on guiding side guide knife bar 300.

If Fig. 9 and 11 are best shown, crossbeam 94 includes horizontal blade bearing 400 (see Figure 11), is used to be arranged hardening steel Horizontal blade plug-in unit 410 (see Fig. 9).Figure 14 illustrates one embodiment of horizontal blade plug-in unit 410.Horizontal blade plug-in unit 410 has Substantially planar preceding wear-resistant surface 414, substantially planar top surface 418 and bottom surface 420, substantially planar end face 424 and 426 and the back side 428.The back side 428 includes four uniform radially spaced internal thread holes 430.The back side 428, which is also rabbeted, a protrusion 432, for pacifying It is fitted into the recess portion 435 (see Figure 11) in horizontal blade bearing 400 Nei.Preceding vertical wear-resistant surface 414 and top wear-resistant surface 418, bottom are wear-resisting Face 420 and the intersection of end face 424,426 constitute four cutting edges 422.Preferably, horizontal blade plug-in unit 410 and four it is radially spaced in Threaded hole 430 is arranged at right angle, horizontal blade plug-in unit 410 can be rotated four times on horizontal blade bearing 400 in this way with 90 ° of angles, in this way So that all four cutting edges 422 all can serve as cutting edge use in use.Pass through the countersunk on crossbeam 94 Horizontal blade plug-in unit 410 is fixed on horizontal blade bearing 400 by nipple 434 (such as bolt) (see Fig. 5 and Fig. 7).Nipple 434 The end of thread be set to horizontal 410 dorsal surface 428 of blade plug-in unit alignment internal thread hole 430 in.

Upper jaw 40 is equipped with blade side and guiding side, respectively corresponds the adjacent blade side jaw beam 90 of lower jaw 42 and guiding Side jaw beam 92.The blade side of upper jaw 40 includes shear knife bar 500 (see Fig. 6), is used for setting and is equally used in lower jaw Shear-blade plug-in unit 110 (see Fig. 5) on 42 shear knife bars 100, such shear-blade plug-in unit 110 can be between bit It is interchangeable, therefore reduces the quantity for configuring different blades needed for shearing attachment 10.But the shear-blade on upper jaw 110 towards lower jaw, (comparison diagram 5 is opposite to upper prong with to lower prong with Fig. 7).Using the side essentially identical with lower jaw Shear-blade plug-in unit 110 is fixed on upper jaw by formula.The end of thread of nipple 132 is buried through upper shear knife bar 500 Head bore 130 and alignment hole 534 are simultaneously fixed by the nut 136 set on 40 guide surface countersunk 538 (see Fig. 7) of upper jaw.

Such as Fig. 6, Figure 10 and Figure 17, the front end or end 601 of upper jaw 40 include one end headstock 600, and end seat 600 is used The base material of upper jaw nose is worn when the puncture tip plug-in unit 610 (see Fig. 5, Fig. 7, Figure 17) of setting hardening steel is to prevent using. End seat 600 includes blade side end 602 (see Fig. 6 and Figure 17) of seat, guiding side headstock 604 (see Figure 10) and front end headstock 606 (see Fig. 6, Figure 10 and Figure 17) constitute a narrow end head 608.The front end head tip 609 of end seat 600 is preferably It is designed to concentrating to reduce the stress in manufacturing process and use process in end head 608 for rounding.Puncture tip plug-in unit 610 includes two A puncture tip half 620,622 is generally mutual other than nipple orifice of the two puncture tip half above respectively (later narration) For mirror image.A puncture tip half for wherein extending to the blade side of end head is hereinafter referred to as blade side puncture tip half 620, The puncture tip half of another guiding side for extending to end head is hereinafter referred to as oriented to side puncture tip half 622.

Figure 15 illustrates each angular views of one embodiment of blade side puncture tip half 620.Figure 16 illustrates guiding side The equal angular view of one embodiment of puncture tip half 622.Puncture tip half 620,622 respectively includes lateral wall 630, lateral wall 630 have generally vertical wear-resistant surface 632 and generally vertical inner support face 634.Puncture tip half 620,622 also each include laterally to Interior antetheca outstanding 636, antetheca 636 have outside sweep wear-resistant surface 638 and inner support face 640.Puncture tip half 620,622 further includes The bottom leg 642 projected laterally inwardly, bottom leg 642 have bottom wear-resistant surface 644 and upper leg supporting surface 646.Puncture tip half 620,622 It further include end supporting surface 648 and lug 650, lug 650 has upper lug supporting surface 651 and lower ledge support surface 653.Lug 650 peripheries are rounding shape outer rim to reduce stress concentration.Lower ledge support surface 653 extends back from end supporting surface 648, later Its purposes will be described in detail in conjunction with Figure 22 and Figure 23.The vertical wear-resistant surface 632 of plane is crossed to form cutting edge 652 with bottom wear-resistant surface 644.Before The bending wear-resistant surface 638 and bottom wear-resistant surface 644 of wall 636 pierce sword 654 before being crossed to form (the preceding thorn sword can be made chamfering).

If Fig. 6, Figure 10 and Figure 17 are best shown, end seat 602,604,606 constitutes peripheral support edge surface 656, outside Enclose the periphery that bearing edge face 656 is complementally provided with puncture tip half 620,622.According to the present embodiment, each puncture tip half 620, the upper surface 646 of the inner surface 640 and bottom leg 642 projected laterally inwardly of 622 antetheca 636 projected laterally inwardly Width is about the half of narrow 608 width of end head, so as to when puncture tip half 620,622 be mounted on end seat 600 on when, puncture tip The inner support face 634 of the side wall 630 of half 620,622 and the upper leg supporting surface 646 of bottom leg 642 will be born against in blade side On each supporting surface of headstock 602, guiding side headstock 604 and front end headstock 606.In addition, the upper lug of puncture tip half 620,622 Supporting surface 651 and lower ledge support surface 653 will be resisted against on the peripheral support edge surface 656 of end seat 600.In end head 601 Blade side, any splay end 124 of upper shear-blade plug-in unit 110 and 126 blade side puncture tip half 620 is resisted against (according to direction) Backside supporting surface 648 on.Similarly, blade side is rotatably limited by blade plug-in unit 110 and peripheral support edge surface 656 Puncture tip half 620 rotates outward (as described below), the upper lug supporting surface of peripheral support edge surface 656 and blade side end seat 651 and lower ledge support surface 653 couple.By peripheral support edge surface 656, rotatably restricted guidance side puncture tip half 622 is moved Dynamic, peripheral support edge surface 656 is coupled with the upper lug supporting surface 651 of guiding side headstock 604 and lower ledge support surface 653.

According to the present embodiment, when puncture tip half 620,622 being mounted on end seat 600, narrow end head 608 be hardened completely steel puncture tip plug-in units 610 surround, thus prevent using when end head 601 base material be worn.

Other than rotatably being limited by peripheral support edge surface 656, by nipple 670 by two puncture tip half 620, 622 are fixed in narrow end head 608.Nipple is preferably soket head cap screw in embodiment.Two puncture tip half 620,622 Alignment hole 660 including running through respective lateral wall 632.Narrow end head 608 is run through in corresponding alignment hole 664.Coaxial countersunk 668 are located on the alignment hole 660 of the outer wall 632 of blade side puncture tip half 620.It is oriented on the outer wall 632 of side puncture tip half 622 Alignment hole 660 is tapped with internal screw thread.The head of nipple 670 is set in countersunk 668.The end of thread of nipple 670 is stretched Enter the alignment hole 660 of blade side puncture tip half 620 and simultaneously screw thread is set to guiding through the alignment hole 664 of narrow end head 608 In the internal screw thread alignment hole 660 of side puncture tip half 622.Obviously, the countersunk 668 and internal screw thread pair of two puncture tip half 620,622 Neat hole 660 can according to need to be arranged in turn.Or ground, countersunk 668 are set to the outer wall 632 of two puncture tip half 620,622 On, for be arranged nipple 670 head and another opposite half on piece of puncture tip nut (not shown) rather than wherein The alignment hole 660 of one puncture tip half.In conjunction with Figure 18 and Figure 22, it is (i.e. outer along the leading edge with puncture tip 610 to be aligned hole 660,664 It is bent wear-resistant surface 638) coaxial arc is aligned setting, to ensure that nipple 670 obtains more uniform load.

According to the present embodiment, when shear-blade plug-in unit 110 is mounted on upper jaw 40, shear-blade plug-in unit Vertical wear-resistant surface 632 of the vertical wear-resistant surface 114,116 (depending on installation direction) of 110 plane with blade side puncture tip half 620 Substantially coplanar, the cutting edge 122 of shear-blade plug-in unit 110 and the cutting edge 652 of puncture tip plug-in unit 610 are substantially aligned.Similarly, when will cut When cutting edge plug-in unit 110 is mounted on lower jaw 42, the vertical wear-resistant surface 114,116 of the plane of shear-blade plug-in unit 110 (is depended on Installation direction) it is substantially coplanar with the vertical wear-resistant surface 214 of blade side guide blade plug-in unit 210, and respective cutting edge 122 and cut Sword 222 is substantially aligned.According to the present embodiment, upper shear-blade plug-in unit and puncture tip plug-in unit 610 it is substantially coplanar vertical resistance to Flour milling 114,116,632 and cutting edge 122,652 have offset slightly, are shear-blade plug-in unit 110 and blade side from lower jaw The cutting edge 122,222 of guide blade plug-in unit 210 slightly deviates (preferred scope is 0.01~0.05 inch) laterally inward, so that When upper jaw is more than that moving range enters the slit 96 of lower jaw 42, upper scissor blade will not be stopped by the cutting edge of lower jaw.Equally Ground, the cutting edge 222 for being oriented to the 652 self- steering side guide blade plug-in unit 210 of cutting edge of side puncture tip half 622 deviate laterally inward, Deviation range is preferably 0.01-0.05 inches.Correspondingly, the width of puncture tip plug-in unit 610 is less than blade side and is oriented to the guiding of side Width (preferably difference is about in 0.02-0.1 inches of range) between the opposite cutting edge 222 of blade 210, in this way when upper jaw closes When the slit 96 of lower jaw 42 is protruded into conjunction, puncture tip plug-in unit 610 can pass through the position between two lower guide blades 210.It can will pad Piece is inserted between each plug-in unit 110,210,610 and its corresponding plug holder 100,200,300,500,600 to keep respectively cutting The close tolerance of sword.

Figure 18-22 is the enlarged side view of jaw 40, jaw 42, preferably to show when upper jaw is mobile, also It is when upper jaw enters 42 96 depth capacity achieved of slit of lower jaw from complete deployed position (see Figure 18) to upper jaw Fully closed position (Figure 21), the relationship between blade plug-in unit 110,210 and puncture tip plug-in unit 610, horizontal blade plug-in unit 410.Figure 19 show upper jaw portion closure when, wherein the preceding thorn sword 654 of puncture tip plug-in unit 610 is perpendicular to ground.Figure 20 illustrates pincers Mouth is located at preceding thorn sword 654 and 42 intersection of lower jaw.

The end head 601 of upper jaw 40 of the end wear strip 700 fixed (such as passing through welding) above puncture tip plug-in unit 610 On be worn when in use to prevent upper jaw base material.When end wear strip 700 is frayed, end wear strip 700 can be removed And change another wear strip 700.Wear strip 700 can be made or can be made of hardened steel by material identical with base material.Such as Figure 20 It is shown, it is preferable that end wear strip extends enough distances along end head to ensure the base material of end head at least in upper jaw 40 It can be protected when protruding into the depth capacity that lower jaw 42 reaches.In another embodiment, puncture tip plug-in unit 610 can be along end head 601 extend to reach the depth capacity that upper jaw protrudes into lower jaw.End seat 600 equally also may extend away in this embodiment, attached Add hole 660 for longer puncture tip plug-in unit 610 to be fully limited in narrow end head 608.

According to the present embodiment, compared with hardened steel puncture tip plug-in unit 610, end head 601 on puncture tip plug-in unit 610 Base material is easier to frayed.So end head 601 can be worn up to the top of puncture tip plug-in unit 610 without wear strip 700 Except edge jag head.Protruded outward if end head 601 is originated from the top of puncture tip plug-in unit 610, opened again when jaw or Protrusion may hinder the material being clipped in jaw when upper jaw is retracted from lower jaw.If being applied to the retraction on upper jaw Power is sufficient, and the material that puncture tip plug-in unit may be obstructed draws to be detached from from end head, because having cut nipple in the process Or the puncture tip plug-in unit that fractureed.Therefore, as described below, the end head 601 of upper jaw is for reducing obstruction risk, even when anti- The frayed base material for leading to end head of obstruction risk or wear strip itself when nog plate 700 is not mounted in end head 601 is again It cannot get the protection of wear strip and bring hinders risk.

The preferred structure that Figure 18 and Figure 21 show end head 601 is preferably minimized to avoid or by obstruction incidence. The double dot dash line that label 800 indicates shows most preceding 654 shape of thorn sword of puncture tip plug-in unit 610 when upper jaw is in the movement of its moving range At camber line.The central axis of camber line 800 to jaw pivot 60 is radius R1.The outermost periphery of end head 601 is from puncture tip 610 Preceding thorn sword 654 penetrates the end point of lower jaw depth capacity to the end of end head wear strip 700 or to corresponding end head 601. The outermost periphery of end head 601 is designed to cumulative generally round and smooth end head camber line 802 at a distance from preceding thorn sword camber line 800. The radius R2 of end head camber line 802 is less than radius R1, so along end head 601 or end head camber line 802 from jaw pivot 60 The radius distance at central axis to tip is gradually reduced relative to thorn sword camber line 800.By another way, pierce sword camber line 800 with The distance of end head camber line 802 is pierced sword camber line 654 along end head 601 or end head camber line 802 in the past and is gradually reduced.Pass through this Structure, end head 601 can only realize contact at preceding thorn sword 654, to avoid or reduce end head 601 along piercing puncture tip End head abrasion is reduced to minimum by a possibility that 610 object is scratched.In addition, due to end head and piercing sword camber line 800 Apart from cumulative, the leading edge of puncture tip plug-in unit 610 is caused to protrude outward from the frayed base material of end head even if end head base material is worn, It can also be reduced by a possibility that material block that jaw is clamped.

Further, if the material that the projecting edge of puncture tip is obstructed or upper jaw is clamped by jaw blocks, puncture tip seat 600 and puncture tip plug-in unit 610 for keeping puncture tip motionless.For example, such as Figure 22, hatched area 900 indicates puncture tip plug-in unit 610 and leads It is jammed or is embedded in the material between 210 wear-resistant surface of shear-blade plug-in unit, wherein puncture tip plug-in unit 610 and shear-blade plug-in unit 210 make upper jaw be sticked into the slit 96 of lower jaw 42, so upper jaw 40 can not be retracted or be opened again.Upper jaw 40 is (hydraulic Actuator 30 pull upper jaw apply) withdrawal force F be used for along perpendicular to radial line 806 direction pull puncture tip plug-in unit 610, Radial line 806 extends from the midpoint direction of the central axial impeding material 900 of jaw pivot 60.Therefore according to the present embodiment institute Show, any supporting surface with 806 angle of radial line less than 90 degree bears withdrawal force F.To be protruded backward by puncture tip plug-in unit 610 Lug 650 ensure that supporting surface is able to bear withdrawal force F.

As shown in figure 22, since lower ledge support surface 653 and radial line 806 form the angle less than 90 degree, so with end Supporting surface shown in the opposite arrow R of the peripheral support edge surface 656 of headstock 600 bears withdrawal force F.Similarly, antetheca 636 is interior Supporting surface 640 leans against on the seat of end shown in arrow R 606 to bear withdrawal force F.In this way, receiving or resistance R can make to pass through contracting It returns power F and is applied to the shearing force of connector 670 and be reduced, so that puncture tip plug-in unit 610 be prevented to be drawn out end head or other modes Such situation is minimized by caused fracture.

Further, since the hole 660 on puncture tip plug-in unit 610 is arranged along nose camber line 804, end head camber line 804 Radius R3 be less than the radius R2 of end head camber line 802 but with the same center of end head camber line 802, all connectors 670 can bear more Uniform load avoids stress concentration from leading to joints shear to further decrease the shear stress being applied on either connector Or puncture tip plug-in unit fracture.

Figure 23 show another embodiment, and wherein hatched area 902 indicates material block in puncture tip plug-in unit 610 and horizontal knife Between piece plug-in unit 410.In this embodiment, it is assumed that withdrawal force F is located at preceding puncture tip sword 654, withdrawal force F is again along perpendicular to radial direction The direction of line 806 pulls puncture tip, and radial line 806 extends from the midpoint direction of the central axial impeding material of jaw pivot 60.Such as Shown in figure arrow 810, withdrawal force F makes puncture tip plug-in unit 610 to outer rolling or far from end head 601.But resistance R makes to hold The upper lug supporting surface 651 of headstock 600 jointly prevents puncture tip plug-in unit 610 to be turned out with peripheral support edge surface 656, to subtract Shearing force on small connector 670 prevents or reduces the stress fracture of puncture tip plug-in unit 610.

Figure 24 is shown as described above when end head 601 is worn to form the case where making the fin of material block Under, act on an example of the withdrawal force F of the top edge of puncture tip plug-in unit 610.In view of the structure of end head 601 is end head Distance gradually increases between camber line 802 and preceding thorn sword camber line 800, therefore such situation is unlikely to occur, but if end Portion is worn to form the fin for making material block, and the resistance R for resisting withdrawal force F makes the upper lug support of end seat 600 Face 651 and peripheral support edge surface 656 jointly prevent thorn sword to be turned out, to reduce the shearing force on connector 670, prevent or Reduce the stress fracture of puncture tip plug-in unit 610.

According to foreground, those of ordinary skill in the art are according to patent specification entire contents and require all make And use the present invention.Industry technical staff should be understood that any modification, general provisions and the characteristic for understanding embodiment described in text.Cause This, the present invention is not limited to embodiment described in text and shown in the drawings, all scopes for not departing from the present invention should all be contained It covers in appended claims of the present invention.

Claims

1. a kind of dismounting is cut, comprising:

One upper jaw, the upper jaw can rotate in the motion range between aperture position and closed position, the upper jaw Whose forwardmost end portions define an end head, the end head has blade side, guiding side, bottom side and front side；

The puncture tip plug-in unit of one hardened steel is mounted on the end head and makes the end head along the blade side, guiding side, bottom Side and front side are by the complete enclosure and protection of the hardened steel.

2. dismounting according to claim 1 is cut, it is characterised in that: the puncture tip plug-in unit includes the first puncture tip part and second Puncture tip part.

3. dismounting according to claim 2 is cut, it is characterised in that: first puncture tip part and second puncture tip part Puncture tip half with the puncture tip plug-in unit is constituted.

4. dismounting according to claim 3 is cut, it is characterised in that: the puncture tip half of each cooperation includes:

One lateral wall, the lateral wall have the outer wear-resistant surface of plane and a plane inner support face；

One bending antetheca, the bending antetheca have outside sweep wear-resistant surface, and the bending antetheca limits an antetheca arc, the antetheca Arc has an antetheca arc radius, and the outside sweep wear-resistant surface extends laterally inward and is substantially perpendicular to the institute of the lateral wall State plane inner support face；

One bottom leg, has lower wear-resistant surface, and the lower wear-resistant surface prolongs laterally inward from the plane inner support face of the lateral wall Stretch and be substantially perpendicular to the outer wear-resistant surface of plane of the lateral wall；

Wherein, the substantially planar outer wear-resistant surface and the bottom wear-resistant surface are crossed to form cutting edge, the outside sweep wear-resistant surface with The bottom wear-resistant surface pierces sword before being crossed to form.

5. dismounting according to claim 4 is cut, it is characterised in that: when the upper jaw rotates in the motion range When, sword is pierced before described and defines a thorn sword arc, and the radius of the thorn sword arc is greater than the antetheca arc radius, so that the antetheca arc The thorn sword arc is gradually distance from along the antetheca length direction.

6. dismounting according to claim 4 is cut, it is characterised in that: the lateral wall includes multiple for installing threaded connection The puncture tip half is removably mounted on the end head, institute for being connected through a screw thread part by the connecting hole of part together It states connecting hole to be arranged along with the concentric connection radial of the antetheca arc, the connecting hole arc radius of the connection radial is less than institute State antetheca arc radius.

7. dismounting according to claim 4 is cut, it is characterised in that:

The plane inner support face of the lateral wall of the first puncture tip half is resisted against the blade of the end head On the supporting surface of side；

The bending antetheca of the first puncture tip half extends to the half of the front side of the end head；

The bottom leg of the first puncture tip half extends to the half of the bottom side of the end head；

The plane inner support face of the lateral wall of the second puncture tip half is resisted against the guiding of the end head On the supporting surface of side；

The bending antetheca of the second puncture tip half extends to the half of the front side of the end head；

The bottom leg of the second puncture tip half extends to the half of the bottom side of the end head.

8. dismounting according to claim 5 is cut, it is characterised in that:

End wear strip has an end wear strip arc, and the end wear strip arc has an end wear strip radius, the end Head wear strip arc and end wear strip radius generally with the antetheca arc and antetheca arc radius so that the end wear strip arc The thorn sword arc is gradually distance from along the end wear strip length direction direction.

9. dismounting according to claim 1 is cut, it is characterised in that: further include an at least shear-blade.

10. dismounting according to claim 1 is cut, it is characterised in that: further include a lower jaw.

11. dismounting according to claim 10 is cut, it is characterised in that: the lower jaw includes an at least shear-blade.

12. dismounting according to claim 11 is cut, it is characterised in that: the lower jaw further includes an at least guide blade.

13. dismounting according to claim 12 is cut, it is characterised in that: the lower jaw further includes at least one horizontal blade.