CN106759580A - A kind of excavator arm application method for frame cavern cave - Google Patents

Abstract

The invention discloses a kind of excavator arm application method for frame cavern cave, including dipper body and the backing plate being welded on dipper body madial wall, two reinforcements of bar shaped are welded with the backing plate along the axial direction of the backing plate, and it is stamped and formed out projection rectangle and parallel with reinforcement in the middle part of the backing plate and along the direction that its plane perpendicular points to upper surface, the projection is placed between two reinforcements, and the projection is in the level height of the level height less than the reinforcement of backing plate upper surface.Contact area reduction between projection and soil in the middle part of backing plate, so that the collision between material and projection is reduced, and the rigidity increase when dipper bends, projection outwardly can effectively reduce the rigidity of the backing plate being welded on dipper madial wall, reduce twisted deformation caused by backing plate local pressure inequality, it is impaired so as to avoid backing plate from tearing in use.

Description

A kind of excavator arm application method for frame cavern cave

Technical field

The present invention relates to a kind of excavator, a kind of excavator arm application method for frame cavern cave is specifically referred to.

Background technology

Bull-dozerIt is a kind of engineering truck, front is equipped with large-scale metal dozer blade, and dozer blade is put down when using, backing-off cutting and pushes mud, husky and stone etc. forward, soil-shifting cutter position and angle can be adjusted.Soil-shifting function individually completes shoveling, muck haulage and unloads geotechnological work, and with operating, flexible, rotation is convenient, requiredWorking faceIt is small, the features such as travel speed is fast.It is primarily adapted for use in one toThree classes soilThe short fortune of shallow cut, such as site clearing or smooth, cutting depth is littleFoundation ditchAnd backfill,Push away and buildIt is highly littleRoadbedDeng.Crawler belt(track-type tractor also have title crawler to formula bull-dozer dozer）Succeeded in developing in 1904 by American Benjamin Holt, it beCaterpillar tractorThe bulldozing device of men hoisting above is installed and is formed, power at that time isSteam engine, succeed in developing afterwards and successively by natural gas power drive andGasoline engineThe crawler dozer of driving, bulldozesPerching knifeAlso developed into by men hoistingSteel wire ropeLifting.Benjamin Holt is also the U.S.Ka TeBi Le（Caterpillar Inc.）One of founder of company, nineteen twenty-five 5Holt manufacturing company and C.L, Best bull-dozerCompany amalgamation, compositionCaterpillarBull-dozer company, as the world first earth-moving equipment producer, and in offline first use of success in 1931Diesel engine60 bull-dozers.With the continuous progress of technology, soil-shifting mechanomotive force is all usedDiesel engine, bulldozing shovel blade andRidge busterAll byHydraulic cylinderLifting.Bull-dozer in addition to crawler dozer, alsoTireFormula bull-dozer, its appearance was than crawler dozer late ten years or so.Because crawler dozer has preferable adhesion property, can play biggerTractive force, therefore at home and abroad, the kind and quantity of its product are considerably beyond wheeled dozer.In the world,CaterpillarIt is construction machinery production company maximum in the world, the crawler dozer of its production has large, medium and small totally 9 series D3-D11, maximum D11 RCD, diesel engineFlywheelPower reaches 634kw；JapanLittle Song（komatsu）Company's row second, just start within 1947 to introduce production D50 crawler dozers, crawler dozer has 13 series, from D21-D575, that minimum is D21, and diesel engine flywheel power is 29.5kw, and that maximum is D575A-3SD, diesel engine flywheel power reaches 858kw, and it is also bull-dozer maximum on our times；The other one bull-dozer manufacturing enterprise for showing unique characteristics is GermanLiebherr group（Liebheer）, its bull-dozer is all using quietHydraulic pressureDrive, the technology releases model machine in 1972 after the research and development of more than ten years, starts within 1974 to produce PR721-PR731 in batches With PR741 hydrostatic drive crawler dozers, due toHydraulic ElementsLimitation, its peak power is only 295Kw, and model PR751 is mining.

Excavator when digging operation is carried out, if material in scraper bowl is hard material such as bulk solid rock, receive struggle against when the material may encounter the front end of dipper body and cause the damage of dipper body.Is damaged to prevent dipper body from being collided by material, at present in dipper body front end lower cover plate weld anticollision device, the anticollision device includes backing plate, is welded with anti-collision bar on backing plate, and the length direction of backing plate and anti-collision bar is consistent with the length direction of dipper body.But this structure has the disadvantage that, i.e. when dipper this body running stress, dipper body can occur bending and deformation at middle bearing hinge, backing plate herein can also follow flexural deformation with anti-collision bar, backing plate will carry out the rigid curved that flexural deformation has to first overcome anti-collision bar, so when the rigidity of anti-collision bar is improved, backing plate also will correspondingly improve its rigidity；Backing plate is rigid to improve the thickness increase for inevitably resulting in backing plate, so can just prevent the cracking of backing plate and its corresponding weld seam.So the shortcoming of this anticollision device is：The rigid requirements of backing plate are high, thickness of slab high cost；If design value is improper can also cause backing plate tear and its peripheral weld cracking.

The content of the invention

It is an object of the invention to provide a kind of excavator arm application method for frame cavern cave, it is to avoid the backing plate tear of dipper body, and then reach the purpose of enhancing dipper main body protection intensity.

The purpose of the present invention is achieved through the following technical solutions：

A kind of excavator arm application method for frame cavern cave, including dipper body and the backing plate being welded on dipper body madial wall, two reinforcements of bar shaped are welded with the backing plate along the axial direction of the backing plate, and it is stamped and formed out projection rectangle and parallel with reinforcement in the middle part of the backing plate and along the direction that its plane perpendicular points to upper surface, the projection is placed between two reinforcements, and the projection is in the level height of the level height less than the reinforcement of backing plate upper surface.During work, dipper body bends, and the upper surface of dipper body directly comes in contact or collide between the material being mined；Mutually extruded when dipper body madial wall is then directly contacted and formed with the material in bucket, it is now placed in the level height of the level height more than projection of the reinforcement of backing plate both sides, then reinforcement is directly as the fulcrum contacted between backing plate and material, so that the contact area reduction between projection and soil in the middle part of backing plate, so that the collision between material and projection is reduced, and the rigidity increase when dipper body bends, projection outwardly can effectively reduce the rigidity of the backing plate being welded on dipper body madial wall, reduce twisted deformation caused by backing plate local pressure inequality, it is impaired so as to avoid backing plate from tearing in use, setting for projection can be on the premise of the intensity for keeping backing plate enough simultaneously, can also to a certain extent reduce the thickness of backing plate, to reduce material usage, mitigate the weight of dipper.

Multiple retraction slots for extending transversely through the reinforcement are provided with the reinforcement top surface, and the cross section of the retraction slot is circular arc.The retraction slot of circular arc can reduce the flexural rigidity of reinforcement when dipper body bends, the deformation quantity that it is produced when i.e. reinforcement is from bending is all the time in the range of contraction well width size, and then avoid reinforcement that backing plate or the weld seam between backing plate are torn in Bending Deformation, improve the service life of backing plate.

Four corners of the backing plate are circular arc.As preferred, four corners of backing plate are set to circular arc, so that the connection between the end of backing plate and dipper body madial wall forms a smooth curl structure, relative to existing backing plate, the end of its triangle or the end construction of square are abandoned, without obvious summit, reduce the possibility of the weld seam rushed between its summit tear backing plate and dipper body madial wall, and then substantially increase its service life, it is to avoid the backing plate tear that inappropriate external force is caused in mining process.

The present invention compared with prior art, has the following advantages and advantages：

1, level height of the level height of the reinforcement of backing plate both sides of the present invention more than projection, then reinforcement is directly as the fulcrum contacted between backing plate and material, so that the contact area reduction between projection and soil in the middle part of backing plate, so that the collision between material and projection is reduced, and the rigidity increase when dipper bends, projection outwardly can effectively reduce the rigidity of the backing plate being welded on dipper madial wall, reduce twisted deformation caused by backing plate local pressure inequality, it is impaired so as to avoid backing plate from tearing in use, setting for projection can be on the premise of the intensity for keeping backing plate enough simultaneously, can also to a certain extent reduce the thickness of backing plate, to reduce material usage, mitigate the weight of dipper.；

2nd, the retraction slot of circular arc of the invention can reduce the flexural rigidity of reinforcement when dipper bends, the deformation quantity that it is produced when i.e. reinforcement is from bending is all the time in the range of contraction well width size, and then avoid reinforcement that backing plate or the weld seam between backing plate are torn in Bending Deformation, improve the service life of backing plate；

3rd, the connection between the end of backing plate and dipper madial wall is formed a smooth curl structure by the present invention, relative to existing backing plate, the end of its triangle or the end construction of square are abandoned, without obvious summit, reduce the possibility of the weld seam rushed between its summit tear backing plate and dipper madial wall, and then substantially increase its service life, it is to avoid the backing plate tear that inappropriate external force is caused in mining process.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes the part of the application, does not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：

Fig. 1 is schematic structural view of the invention；

Mark and corresponding parts title in accompanying drawing：

Bearing in 1- dippers body, 2- backing plates, 3- reinforcements, 4- projections, 5- retraction slots, 6-.

Specific embodiment

To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, not as a limitation of the invention.

Embodiment 1

As shown in Figure 1, the present embodiment includes dipper body 1 and the backing plate 2 being welded on the madial wall of dipper body 1, two reinforcements of bar shaped 3 are welded with the backing plate 2 along the axial direction of the backing plate 2, and it is stamped and formed out projection 4 rectangle and parallel with reinforcement 3 at the middle part of the backing plate 2 and along the direction that its plane perpendicular points to upper surface, the projection 4 is placed between two reinforcements 3, and the projection 4 is in the level height of the level height less than the reinforcement 3 of the upper surface of backing plate 2.

During work, dipper body 1 bends, and the upper surface of dipper body 1 directly comes in contact or collide between the material being mined；When the material in the bucket that the madial wall of dipper body 1 then directly and with middle bearing 6 is hinged is contacted and forms mutually extruding,It is now placed in the level height of the level height more than projection 4 of the reinforcement 3 of the both sides of backing plate 2,Then reinforcement 3 is directly as the fulcrum contacted between backing plate 2 and material,So that the contact area reduction between the projection 4 and soil at the middle part of backing plate 2,So that the collision between material and projection 4 is reduced,And the rigidity increase when dipper body 1 bends,Projection 4 outwardly can effectively reduce the rigidity of the backing plate 2 being welded on the madial wall of dipper body 1,Reduce twisted deformation caused by the local pressure of backing plate 2 inequality,It is impaired so as to avoid backing plate 2 from tearing in use,Setting for projection 4 can be on the premise of the intensity for keeping backing plate 2 enough simultaneously,Can also to a certain extent reduce the thickness of backing plate 2,To reduce material usage,Mitigate the weight of dipper body 1.

Wherein, multiple retraction slots 5 for extending transversely through the reinforcement 3 are provided with the top surface of the reinforcement 3, and the cross section of the retraction slot 5 is circular arc.The retraction slot 5 of circular arc can reduce the flexural rigidity of reinforcement 3 when dipper body 1 bends, the deformation quantity that it is produced when i.e. reinforcement 3 is from bending is all the time in the range of the width size of retraction slot 5, and then avoid reinforcement 3 torn in Bending Deformation backing plate 2 or with the weld seam between backing plate 2, improve backing plate 2 service life.

As preferred, four corners of backing plate 2 are set to circular arc, so that the connection between the end of backing plate 2 and the madial wall of dipper body 1 forms a smooth curl structure, relative to existing backing plate 2, the end of its triangle or the end construction of square are abandoned, without obvious summit, reduce the possibility of the weld seam rushed between its summit tear backing plate 2 and the madial wall of dipper body 1, and then substantially increasing its service life, it is to avoid the backing plate 2 that inappropriate external force is caused in mining process tears.

Above-described specific embodiment; the purpose of the present invention, technical scheme and beneficial effect are further described; should be understood that; the foregoing is only specific embodiment of the invention; the protection domain being not intended to limit the present invention; all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included within the scope of the present invention.

Claims (3)

1. a kind of excavator arm application method for frame cavern cave, including dipper body（1）And it is welded on dipper body（1）Backing plate on madial wall（2）, it is characterised in that：Along the backing plate（2）Axial direction in the backing plate（2）On be welded with two reinforcements of bar shaped（3）, and in the backing plate（2）Middle part and be stamped and formed out rectangle along the direction that its plane perpendicular points to upper surface and and reinforcement（3）Parallel projection（4）, the projection（4）It is placed in two reinforcements（3）Between, and the projection（4）In backing plate（2）The level height of upper surface is less than the reinforcement（3）Level height, during work, dipper body bends, and the upper surface of dipper body directly comes in contact or collide between the material being mined；Mutually extruded when dipper body madial wall is then directly contacted and formed with the material in bucket, it is now placed in the level height of the level height more than projection of the reinforcement of backing plate both sides, then reinforcement is directly as the fulcrum contacted between backing plate and material, so that the contact area reduction between projection and soil in the middle part of backing plate, so that the collision between material and projection is reduced, and the rigidity increase when dipper body bends, projection outwardly can effectively reduce the rigidity of the backing plate being welded on dipper body madial wall, reduce twisted deformation caused by backing plate local pressure inequality, it is impaired so as to avoid backing plate from tearing in use, setting for projection can be on the premise of the intensity for keeping backing plate enough simultaneously, can also to a certain extent reduce the thickness of backing plate, to reduce material usage, mitigate the weight of dipper.

2. a kind of excavator arm application method for frame cavern cave according to claim 1, it is characterised in that：In the reinforcement（3）Multiple is provided with top surface and extends transversely through the reinforcement（3）Retraction slot（5）, and the retraction slot（5）Cross section be circular arc.

3. a kind of excavator arm application method for frame cavern cave according to claim 1, it is characterised in that：The backing plate（2）Four corners be circular arc.