CN107190794A - A kind of excavator swing arm dipper assembly and assembly method - Google Patents
A kind of excavator swing arm dipper assembly and assembly method Download PDFInfo
- Publication number
- CN107190794A CN107190794A CN201710597506.9A CN201710597506A CN107190794A CN 107190794 A CN107190794 A CN 107190794A CN 201710597506 A CN201710597506 A CN 201710597506A CN 107190794 A CN107190794 A CN 107190794A
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- China
- Prior art keywords
- otic placode
- inner sleeve
- swing arm
- holding
- fork plate
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000013213 extrapolation Methods 0.000 claims description 40
- 238000009434 installation Methods 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 13
- 238000003466 welding Methods 0.000 description 17
- 238000003801 milling Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 6
- 229910000997 High-speed steel Inorganic materials 0.000 description 5
- 239000002826 coolant Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
- E02F3/382—Connections to the frame; Supports for booms or arms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Shovels (AREA)
Abstract
The invention discloses a kind of excavator swing arm dipper assembly and assembly method.Assembly includes swing arm, dipper, oil cylinder, the first attachment means and the second attachment means.First attachment means include otic placode axle, the first overcoat, the first inner sleeve, the first pad, the first locking nut and the first Anti-rotary block；Second attachment means include otic placode axle, the second overcoat, the second inner sleeve, the second pad, the second locking nut and the second Anti-rotary block.Assembly method is connected dipper with swing arm by the second attachment means to be connected oil cylinder with swing arm by the first attachment means.Using the structure of the present invention, abrasion is mainly undertaken by the first overcoat and the first inner sleeve, plays a part of protecting swing arm, and if desired for replacing, as long as also changing the first overcoat and the first inner sleeve, easy to maintenance, maintenance cost is low.Abrasion is mainly undertaken by the second overcoat and the second inner sleeve, plays a part of protecting swing arm, and if desired for replacing, as long as also changing the second overcoat and the second inner sleeve, easy to maintenance, maintenance cost is low.
Description
Technical field
The present invention relates to the swing arm dipper assembly and its assembly method of excavator.
Background technology
As depicted in figs. 1 and 2, existing excavator swing arm dipper assembly include swing arm 1, dipper 2, the first attachment means 3,
Second attachment means 4 and oil cylinder 5.
As shown in Fig. 1,2 and Fig. 5, the middle part of swing arm 1 is welded with otic placode 11, and otic placode 11 is provided with two；The one of swing arm 1
Fork plate 12 before end is welded with, preceding fork plate is provided with two.Otic placode boss 111 is provided with the inner side of otic placode 11, in preceding fork plate 12
Inner side is provided with preceding fork plate boss 121.The outside of fork plate 12 is welded with locating piece 122 before one wherein, is provided with locating piece 122
Locating slot 123.
As shown in Fig. 1,2 and Fig. 3, the first attachment means 3 include the locking nut 32 of otic placode axle 31 and the 3rd, otic placode axle 31
One end has first shaft shoulder 311, and one end of oil cylinder 5 is located between two otic placode boss 111, and otic placode axle 31 passes through otic placode 11 and oil cylinder
One end, the 3rd locking nut 32 is installed in the one end of otic placode axle 31 away from first shaft shoulder 311, in the He of the 3rd locking nut 32
Otic placode axle prevents the 3rd locking nut 32 from screwing out through there is bolt 312.
As shown in Fig. 1,2 and Fig. 4, the second attachment means 4 include jointed shaft 41, Anti-rotary block 42, pad 43, nut 44 and opened
Mouth pin 45.As shown in fig. 6, Anti-rotary block 42 is fixed on one end of jointed shaft 41, jointed shaft 41 passes through preceding fork plate, dipper 2, is being hinged
The other end of axle 41 is provided with pad 43 and nut 44, prevents nut 44 from releasing using split pin 45.
After swing arm dipper assembly is installed, the one end side of oil cylinder is contacted with the shaving of otic placode boss, a side of dipper
Face is contacted with the shaving of preceding fork plate boss, therefore, when processing swing arm 1, the inner side of otic placode boss 111 and preceding fork plate boss 121
Face is needed for shaving.But during the swing arm and dipper of processing excavator, find each workpiece with shaving when
Between it is especially many, it is also larger in the cooling liquid measure used in this work step；Two people are often wanted to carry out simultaneously in specific operation process,
One people controls lathe, and another person's handling cutter operates highly difficult, coolant is also easily splashed in the eyes of people, right
Human body is damaged.If running into the slightly higher workpiece of some hardness, high-speed steel shaving knife is more difficult to excision material, and tool wear is tight
Weight, sharpens and will take for more times again again.Two people's operations easily produce speech signal misinterpretation simultaneously, cause serious
Injury.
It is worth mentioning that machine vibration is severe when shaving, the service life of lathe, vibration machining can be so influenceed
Workpiece surface quality afterwards is very poor, unsightly.
In addition, the swing arm and dipper of excavator be working arm, it is necessary to which that reprocesses is a lot, so there is the utilization to lathe to cause
Secondary waste so that be multiplied per batch workpiece process time, and because swing arm, the dipper reprocessed need repair welding again,
Weld interval to welding personnel is a kind of serious waste, wastes substantial amounts of welding wire.
For the first attachment means, its is simple in construction, and this device is positioned by first shaft shoulder in otic placode axle, by the
Three locking nuts and bolt are fixed on otic placode, and oil cylinder, which is enclosed on axle, to be rotated.The otic placode boss of shaving is needed by two
Positioning.
Referring to Fig. 3, the otic placode axle of the first attachment means is because there is the fixation of the 3rd locking nut and bolt so that otic placode axle
It can not rotate, while otic placode axle can not deviate from otic placode, because the otic placode boss on the inside of otic placode is welded to inner side, so being all oil
Cylinder is rotating around otic placode axle, and other structures do not have relative motion.
Because the elongation of piston rod in oil cylinder is shortened, reaction force F1 radially is formd to otic placode axle, so
So that otic placode axle produces bending stress, while causing compressing to the inner arm of otic placode and the hole of otic placode boss.Because the structure is
Positioned by the 3rd locking nut and bolt, so oppressing less, the mill at such otic placode to the surface for needing shaving during motion
The modification for being mainly otic placode and otic placode boss hole is damaged, the abrasion of otic placode boss surface is little.Even if the abrasion of the shaving of otic placode boss
It is few, but abrasion can be produced, and also the hole of otic placode and otic placode boss can produce larger abrasion, use to the regular hour,
Then need to change otic placode, otic placode boss, and otic placode and otic placode boss are welded on swing arm, thus certainly will be whole by swing arm
Change, repair inconvenience, and cost is high.
For the second attachment means, the Anti-rotary block that this device is hinged shaft end by being welded on prevents the rotation of jointed shaft
Turn, by pad, nut jointed shaft is fixed in swing arm, rotating out for nut is prevented with split pin.Dipper passes through weldering
Preceding fork plate boss before being connected on the inside of fork plate is positioned with jointed shaft, limits its five frees degree.
As shown in Figure 6, it has been found that the Anti-rotary block of jointed shaft end is welded to above jointed shaft.If the jointed shaft
Process be：Roughing --- welding --- is finished.So the jointed shaft is just inconvenient in finishing.If the hinge
The process of spindle is：Roughing --- finishing --- is welded.So the jointed shaft is easy for deformation after finished product is made.
Referring to Fig. 4, this jointed shaft is because there is the Anti-rotary block of welding so that jointed shaft can not rotate, while jointed shaft is left
There is nut tension side, and jointed shaft can not deviate from preceding fork plate.Because the preceding fork plate boss of front fork intralamellar part is welded to inner side, so
All it is that dipper rotates around jointed shaft, other structures do not have relative motion.
Because dipper rotates along jointed shaft, the reaction force F2 that can be also formed radially is received to being hinged, so
So that jointed shaft generates bending stress, while causing compressing to the inner arm of preceding fork plate and the hole of preceding fork plate boss.Due to this
Structure is to compress to position by nut, although play the role of shim liner, and the surface for needing shaving is still generated in motion
The modification in the hole of fork plate and preceding fork plate boss, preceding fork plate boss surface before abrasion mainly at larger compressing, so preceding fork plate
Abrasion is also larger.It if abrasion is excessive, can not normally use, it is necessary to change whole swing arm, cause the cost of maintenance high.
The content of the invention
It is an object of the invention to provide a kind of excavator swing arm dipper assembly and its assembly method, the knot of the present invention is utilized
Structure, the first overcoat, the first inner sleeve, otic placode axle are non-rotary, and oil cylinder rotates relative to otic placode axle, oil cylinder and the first overcoat, the
One inner sleeve and otic placode axle have contact, and abrasion is mainly undertaken by the first overcoat and the first inner sleeve, play a part of protecting swing arm, such as need
Change, as long as also changing the first overcoat and the first inner sleeve, easy to maintenance, maintenance cost is low.Second overcoat, the second inner sleeve and hinge
Spindle is non-rotary, and dipper rotates relative to jointed shaft, and dipper is contacted with the second overcoat, the second inner sleeve and jointed shaft, is ground
Damage is mainly undertaken by the second overcoat and the second inner sleeve, plays a part of protecting swing arm, if desired for replacing, as long as also changing outside second
Set and the second inner sleeve, easy to maintenance, maintenance cost is low.
To reach above-mentioned purpose, a kind of excavator swing arm dipper assembly, including swing arm, dipper and oil cylinder；In swing arm
Portion is welded with otic placode, and otic placode is provided with two, and otic placode is provided with the first mounting hole, fork plate before being welded with the front end of swing arm, front fork
Plate is provided with two, and preceding fork plate is provided with the second mounting hole；
Otic placode boss is welded with the outside of otic placode；Fork plate boss before being welded with the outside of preceding fork plate；Otic placode and oil cylinder it
Between be provided with the first attachment means, between preceding fork plate and dipper be provided with the second attachment means；
The first described attachment means include otic placode axle, the first overcoat, the first inner sleeve, the first pad and the first locking nut, ear
One end of board shaft has first shaft shoulder, and otic placode axle passes through two otic placodes, wherein the lateral surface of an otic placode withstands first shaft shoulder, in place
There is the first locating slot in being fixed with the otic placode of the first shaft shoulder side on the first locating piece, the first locating piece, in first shaft shoulder
On be fixed with the first Anti-rotary block, one end holding of the first Anti-rotary block is in the first locating slot；The first described overcoat includes first
Extrapolation female connector and the first outward flange, the first outward flange are located at the outer end of the first extrapolation female connector, and the first extrapolation female connector is enclosed on otic placode axle
On, the first extrapolation female connector passes through otic placode, and the medial surface of the first outward flange is contacted with the lateral surface of otic placode boss；In the inner side of otic placode
The first limited block is fixed with face；Put in first provided with the first stopper slot, the first inner sleeve is enclosed on otic placode axle, the first inner sleeve position
In the inner side of otic placode, the first limited block holding is in the first stopper slot, the end face outside of the first inner sleeve and the first extrapolation female connector
Medial surface is in contact；The first pad is being provided with away from first shaft shoulder and positioned at the outside of another otic placode, the first pad is compressed on the
On one outward flange, the first locking nut provided with the first pad of locking on otic placode axle；Oil cylinder is hinged on positioned at two first inner sleeves
Otic placode axle on, the contacts side surfaces of the first inner sleeve and oil cylinder；
The second described attachment means include jointed shaft, the second overcoat, the second inner sleeve, the second pad and the second locking nut, hinge
One end of spindle has second shaft shoulder, and jointed shaft is through fork plate before two, wherein the lateral surface of fork plate withstands second shaft shoulder before one,
Being fixed with the preceding fork plate positioned at the second shaft shoulder side on the second locating piece, the second locating piece has the second locating slot, the
The second Anti-rotary block is fixed with two shaft shoulders, one end holding of the second Anti-rotary block is in the second locating slot；The second described overcoat bag
The second extrapolation female connector and the second outward flange are included, the second outward flange is located at the outer end of the second extrapolation female connector, and the second extrapolation female connector is enclosed on
On jointed shaft, the second extrapolation female connector passes through preceding fork plate, and the medial surface of the second outward flange is contacted with the lateral surface of preceding fork plate boss；
The second limited block is fixed with the medial surface of preceding fork plate；Put in second provided with the second stopper slot, the second inner sleeve is enclosed on jointed shaft
On, the second inner sleeve be located at preceding fork plate inner side, the second limited block holding in the second stopper slot, the end face outside of the second inner sleeve with
The medial surface of second extrapolation female connector is in contact；The second pad is being provided with away from second shaft shoulder and positioned at the outside of another preceding fork plate,
Second pad is compressed on the second outward flange, the second locking nut provided with the second pad of locking on jointed shaft；Dipper is hinged
On the jointed shaft positioned at two second inner sleeves, the contacts side surfaces of the second inner sleeve and dipper.
The assembly method of described excavator swing arm dipper assembly is：Installation method including the first attachment means and oil cylinder
And second attachment means and dipper installation method；
Wherein, the installation method of the first attachment means and oil cylinder is：
（1）First overcoat is installed；
（2）First inner sleeve is installed, allowed in the first limited block holding to the first stopper slot, while allowing the medial surface of the first extrapolation female connector
Contacted with the lateral surface of the first inner sleeve；
（3）One end of oil cylinder is installed between two first inner sleeves；
（4）First Anti-rotary block is installed on first shaft shoulder, allows otic placode axle to pass through the first overcoat and the first inner sleeve, allows the first anti-rotation
Block holding is in the first locating slot；
（5）First pad and the first locking nut are installed；
The installation method of second attachment means and dipper is：
（a）Second overcoat is installed；
（b）Second inner sleeve is installed, allowed in the second limited block holding to the second stopper slot, while allowing the medial surface of the second extrapolation female connector
Contacted with the lateral surface of the second inner sleeve；
（c）One end of oil cylinder is installed between two second inner sleeves；
（d）Second Anti-rotary block is installed on second shaft shoulder, allows otic placode axle to pass through the second overcoat and the second inner sleeve, allows the second anti-rotation
Block holding is in the second locating slot；
（e）Second pad and the second locking nut are installed.
Above-mentioned excavator swing arm dipper assembly structure, because otic placode boss is welded on the outside of otic placode, preceding fork plate boss
The outside of preceding fork plate has been welded on, so, processing has been easy to face milling cutters, it is not necessary to as carrying out at shaving the need for existing
Reason, eliminates shaving so that single workpiece man-hour is substantially reduced, and shaving is changed to milling face so that the consumption of coolant subtracts significantly
It is few, make its dry cutting by 50% original increase till now 80%, while also just solving the people handling people's control machine of cutter one
The potential safety hazard that bed is brought, high-speed steel shaving knife demand is cancelled simultaneously, has saved cost, and shaving is changed to use face milling cutters milling face
Afterwards, surface quality is improved, and shaving is changed to use behind face milling cutters milling face, dither effect is reduced, and machine tooling is steady, and lathe shakes
It is dynamic to significantly reduce；Otic placode boss and preceding fork plate boss are welded on outside, use school pin and high-speed steel before no longer needing is proofreaded
Bar is gesticulated, and has been changed to direct use school pin check and correction boss outer surface.
For the first attachment means, the first inner sleeve makes it not rotated with the motion of oil cylinder by the first limited block,
And the first overcoat and the contact of the first inner sleeve, therefore, the first overcoat will not also rotate；First anti-rotation is installed on otic placode axle
Block, the first Anti-rotary block holding is in the first locating slot, and otic placode axle is locked by the first pad and the first locking nut, therefore, ear
Board shaft will not also be rotated with the rotation of oil cylinder.So, otic placode axle is motionless, the first inner sleeve is motionless, the first overcoat is also motionless, only
There is oil cylinder around otic placode axle in rotation.By the analysis of said structure, key wear position is located at the inner side of the first inner sleeve, and by
The position of bearing of bending stress caused by otic placode axle has been moved in the first overcoat and first and put, and so abrasion is just main by the
One overcoat, the first inner sleeve undertake, and reprocess if desired, it is only necessary to change the first overcoat and the first inner sleeve both can, reduce maintenance
Cost, while the swing arm also protected.
For the second attachment means, the second inner sleeve makes it not rotated with the motion of dipper by the second limited block,
And the second overcoat and the contact of the second inner sleeve, therefore, the second overcoat will not also rotate；Second anti-rotation is installed on jointed shaft
Block, the second Anti-rotary block holding is in the second locating slot, and jointed shaft is locked by the second pad and the second locking nut, therefore, hinge
Spindle will not also be rotated with the rotation of dipper.So, jointed shaft is motionless, the second inner sleeve is motionless, the second overcoat is also motionless, only
There is dipper around jointed shaft in rotation.By the analysis of said structure, key wear position is located at the inner side of the second inner sleeve, and by
The position of bearing of bending stress caused by jointed shaft has been moved in the second overcoat and second and put, and so abrasion is just main by the
Two overcoats, the second inner sleeve undertake, and reprocess if desired, it is only necessary to change the second overcoat and the second inner sleeve both can, reduce maintenance
Cost, while the swing arm also protected.
Further, the first clamping groove is provided with the end face of first shaft shoulder, one end holding of the first Anti-rotary block is first
In clamping groove, the first Anti-rotary block is fixed on first shaft shoulder by the first screw；Provided with the second card on the end face of second shaft shoulder
Groove is put, one end holding of the second Anti-rotary block is in the second clamping groove, and the second Anti-rotary block is fixed on second shaft shoulder by the second screw
On.In assembling process, first by the first Anti-rotary block holding to the first clamping groove, then fixed by the first screw；First by
In two Anti-rotary block holdings to the second clamping groove, then fixed by the second screw.The structure, otic placode axle and the first Anti-rotary block are independent
Processing, is then assembled by the first screw, so, just solves existing no matter using what which kind of processing mode was brought
Such as the problem of last finishing is difficult, rear welding causes otic placode shaft distortion.Equally, jointed shaft is individually processed with the second Anti-rotary block,
Then assembled by the second screw, so, just solve it is existing no matter using which kind of processing mode brought as most
The problem of difficult, rear welding causes otic placode shaft distortion is finished afterwards.
Further, the first described Anti-rotary block includes the first connecting plate and the first holding being fixed on the first connecting plate
Block, the first holding block holding is in the first locating slot；The second described Anti-rotary block includes the second connecting plate and is fixed on the second company
The second holding block on fishplate bar, the second holding block holding is in the second locating slot.So, the first easy holding of holding block is to first
In locating slot, and it is easy to process, equally, in the second easy holding of holding block to the second locating slot, and it is easy to processing.
Further, there is gap between the first inner sleeve and otic placode；There is gap between second inner sleeve and preceding fork plate.So
Also the problem of just compensate for the welding deformation that is brought when otic placode and front fork plate weld and cause to assemble undesirable.
Further, there is gap between the first stopper slot and the first limited block, the second stopper slot and the second limited block it
Between have gap.So also it is prevented that the mistake orientation problem of first, second inner sleeve.
Further, first annular groove is provided with the lateral surface of the first inner sleeve, the first extrapolation female connector is inserted into first annular
In groove.The first extrapolation female connector can be carried out by first annular groove radially spacing.
Further, the first cushion is provided between the first inner sleeve and otic placode, is provided between the second inner sleeve and otic placode
Second cushion.So, that is, it compensate for the welding deformation that is brought when otic placode and front fork plate weld and cause assembling undesirable
The problem of, cause that structure is compacter again.
Brief description of the drawings
Fig. 1 is the stereogram of existing excavator swing arm dipper assembly.
Fig. 2 is the front schematic view of existing excavator swing arm dipper assembly.
Fig. 3 is A-A profiles in Fig. 2.
Fig. 4 is B-B profiles in Fig. 2.
Fig. 5 is the stereogram of existing swing arm.
Fig. 6 is the stereogram of existing jointed shaft.
Fig. 7 is excavator swing arm dipper assembly stereogram in the present invention.
Fig. 8 is another view stereo figure of excavator swing arm dipper assembly in the present invention.
Fig. 9 is the exploded view of excavator swing arm dipper assembly in the present invention.
Figure 10 is the front schematic view of excavator swing arm dipper assembly in the present invention.
Figure 11 is C-C profiles in Figure 10.
Figure 12 is D-D profiles in Figure 10.
Figure 13 is the stereogram of swing arm.
Figure 14 is the stereogram of otic placode axle.
Figure 15 is the stereogram of the first overcoat.
Figure 16 is the stereogram of the first inner sleeve.
Embodiment
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 7 to 10, excavator swing arm dipper assembly includes swing arm 1, dipper 2, the first attachment means 3, second
Attachment means 4 and oil cylinder 5.
As shown in figure 13, otic placode 11 is welded with the middle part of swing arm 1, otic placode 11 is provided with two, and otic placode is provided with the first peace
Fill hole 110；Otic placode boss 111 is welded with the outside of otic placode 11.The first limited block 114 is welded with the inner side of otic placode 11,
Being welded with the outside of a wherein otic placode on the first locating piece 115, the first locating piece 115 has the first locating slot 1151.
As shown in figure 13, fork plate 12 before being welded with the front end of swing arm 1, preceding fork plate 12 is provided with two, and preceding fork plate 12 is set
There is the second mounting hole 120；Fork plate boss 121 before being welded with the outside of preceding fork plate 12, the height of preceding fork plate boss 121 is relatively low.
The second limited block 124 is welded with the inner side of preceding fork plate 12, the second locating piece 125 is welded with the outside of fork plate before one wherein,
There is the second locating slot 1251 on second locating piece 125.
As shown in Fig. 7 to Figure 11, the first described attachment means 3 include otic placode axle 31, the first overcoat 33, the first inner sleeve
34th, the first pad 35, the first locking nut 36 and the first split pin 37.
As shown in figure 14, one end of otic placode axle 31 has first shaft shoulder 311, provided with the on the end face of first shaft shoulder 311
One clamping groove 3111.First Anti-rotary block 38 includes the first connecting plate 381 and the first holding block being fixed on the first connecting plate 381
382, one end holding of the first connecting plate 381 passes through 3111 pair of first connecting plate of the first clamping groove in the first clamping groove 3111
381 are positioned, and the first connecting plate 381 is fixed on first shaft shoulder by the first screw 39, and the holding of the first holding block 382 is
In one locating slot 1151.In assembling process, first the first connecting plate 381 is fixed with the first holding block 382, then connected first
Fishplate bar holding is fixed in the first clamping groove 3111 finally by the first screw 39.Otic placode axle 31 and the first Anti-rotary block 38 are independent
Processing, is then assembled by the first screw 39, so, just solves existing no matter being brought using which kind of processing mode
Such as the problem of last finishing is difficult, rear welding causes otic placode shaft distortion.
Otic placode axle 31 passes through the first mounting hole 110 of two otic placodes 11, wherein the lateral surface of an otic placode 11 withstands first axle
Shoulder 311.
As shown in figure 15, the first described overcoat 33 is included outside the first extrapolation female connector 331 and the first outward flange 332, first
Flange 332 is located at the outer end of the first extrapolation female connector 331.As shown in figure 12, the first extrapolation female connector 331 is enclosed on otic placode axle 31, the
One extrapolation female connector 331 is through otic placode boss and the first mounting hole 110 of otic placode, and the medial surface and otic placode of the first outward flange 332 are convex
The lateral surface contact of platform 111.
As shown in figure 16, the first inner sleeve 34 is provided with the first stopper slot 341, and the first inner sleeve 34 is enclosed on otic placode axle 31,
The lateral surface of first inner sleeve 34 is provided with first annular groove 342, as shown in figure 11, and the first inner sleeve 34 is located at the inner side of otic placode 11, the
One extrapolation female connector 331 is inserted into first annular groove 342 and contacted with each other, and the first extrapolation female connector can be entered by first annular groove
Conduct is to spacing；The holding of first limited block 114 has gap in the first stopper slot 341 between first inner sleeve 34 and otic placode 11,
The welding deformation that brings when so also just compensate for otic placode welding and cause the problem of assembling is not in place and undesirable；When
So, the first cushion can also be provided between the first inner sleeve 34 and otic placode 11, the first cushion can be rubber blanket, so,
The welding deformation that brings when compensate for otic placode welding and the problem of cause to assemble undesirable, again structure is more stepped up
Gather.There is gap between first stopper slot and the first limited block.So also it is prevented that the mistake orientation problem of the first inner sleeve.
As shown in figures 9 and 11, the first pad 35, first are being provided with away from first shaft shoulder and positioned at the outside of another otic placode
Pad 35 is compressed on the first outward flange 331, the first locking nut 36 provided with the first pad of locking on otic placode axle 31, the
Being passed through on one locking nut and otic placode axle has the first split pin 37；Oil cylinder 5 is hinged on the otic placode axle 31 positioned at two first inner sleeves 34
On, the first inner sleeve 34 and the contacts side surfaces of oil cylinder 5.
As shown in Fig. 7 to Figure 10 and Figure 12, the second described attachment means 4 include jointed shaft 41, the second overcoat 43, second
Inner sleeve 44, the second pad 45, the second locking nut 46 and the second split pin 47.
As shown in figure 9, one end of jointed shaft 41 has second shaft shoulder 411, second is provided with the end face of second shaft shoulder 411
Clamping groove 4111.Second Anti-rotary block 48 includes the second connecting plate 481 and the second holding block being fixed on the second connecting plate 481
482, one end holding of the second connecting plate 481 passes through 4111 pair of second connecting plate of the second clamping groove in the second clamping groove 4111
481 are positioned, and the second connecting plate 481 is fixed on second shaft shoulder by the second screw 49, and the holding of the second holding block 482 is
In two locating slots 1251.In assembling process, first the second connecting plate 481 is fixed with the second holding block 482, then connected second
Fishplate bar holding is fixed in the second clamping groove 4111 finally by the second screw 49.Jointed shaft 41 and the second Anti-rotary block 48 are independent
Processing, is then assembled by the second screw 49, so, just solves existing no matter being brought using which kind of processing mode
Such as the problem of last finishing is difficult, rear welding causes to be hinged shaft distortion.
Jointed shaft 41 passes through the second mounting hole 120 of fork plate 12 before two, wherein the lateral surface of fork plate 12 withstands the before one
Two shaft shoulders 411.
As shown in figure 9, the second described overcoat 43 includes the second extrapolation female connector 431 and the second outward flange 432, the second evagination
Edge 432 is located at the outer end of the second extrapolation female connector 431.Second extrapolation female connector 431 is enclosed on jointed shaft 41, the second extrapolation female connector 431
Through front fork boss and the second mounting hole 120, the lateral surface of the medial surface of the second outward flange 432 and preceding fork plate boss 121 connects
Touch.
Second inner sleeve 44 is provided with the second stopper slot 441, and the second inner sleeve 44 is enclosed on jointed shaft 41, the small end of the second inner sleeve
It is inserted into the second mounting hole, as shown in figure 12, the second inner sleeve 44 is located at the inner side of otic placode 11, the second extrapolation female connector 43 and second
Inner sleeve 44 is contacted；The holding of second limited block 124 is in the second stopper slot 441, between having between the second inner sleeve 44 and preceding fork plate 12
Gap, the welding deformation brought when so also just compensate for front fork plate weld and cause assembling not in place and undesirable ask
Topic；It is of course also possible to be provided with the second cushion between the second inner sleeve 44 and preceding fork plate 12, the second cushion can be rubber
Pad, so, that is, the problem of compensate for the welding deformation that is brought during front fork plate weld and cause to assemble undesirable cause knot again
Structure is compacter.There is gap between second stopper slot and the second limited block.So also it is prevented that crossing for the second inner sleeve is positioned
Problem.
As shown in figs. 9 and 12, the second pad 45, second are being provided with away from second shaft shoulder and positioned at the outside of another otic placode
Pad 45 is compressed on the second outward flange 431, the second locking nut 46 provided with the second pad of locking on jointed shaft 41, the
Being passed through on two locking nuts and jointed shaft has the second split pin 47；Dipper 2 is hinged on the jointed shaft 41 positioned at two second inner sleeves 44
On, the second inner sleeve 44 and the contacts side surfaces of dipper 2.
The assembly method of described excavator swing arm dipper assembly is：Installation side including the first attachment means 3 and oil cylinder 5
The installation method of method and the second attachment means 4 and dipper 2.
Wherein, the installation method of the first attachment means 3 and oil cylinder 5 is：
（1）First overcoat is installed.
（2）First inner sleeve is installed, allowed in the first limited block holding to the first stopper slot, while allowing the interior of the first extrapolation female connector
Side is contacted with the lateral surface of the first inner sleeve.
（3）One end of oil cylinder is installed between two first inner sleeves.
（4）First Anti-rotary block is installed on first shaft shoulder, allows otic placode axle to pass through the first overcoat and the first inner sleeve, allows first
Anti-rotary block holding is in the first locating slot.
（5）First pad and the first locking nut are installed.
The installation method of second attachment means and dipper is：
（a）Second overcoat is installed.
（b）Second inner sleeve is installed, allowed in the second limited block holding to the second stopper slot, while allowing the interior of the second extrapolation female connector
Side is contacted with the lateral surface of the second inner sleeve.
（c）One end of oil cylinder is installed between two second inner sleeves.
（d）Second Anti-rotary block is installed on second shaft shoulder, allows otic placode axle to pass through the second overcoat and the second inner sleeve, allows second
Anti-rotary block holding is in the second locating slot.
（e）Second pad and the second locking nut are installed.
Above-mentioned excavator swing arm dipper assembly structure, because otic placode boss is welded on the outside of otic placode, preceding fork plate boss
The outside of preceding fork plate has been welded on, so, processing has been easy to face milling cutters, it is not necessary to as carrying out at shaving the need for existing
Reason, eliminates shaving so that single workpiece man-hour is substantially reduced, and shaving is changed to milling face so that the consumption of coolant subtracts significantly
It is few, make its dry cutting by 50% original increase till now 80%, while also just solving the people handling people's control machine of cutter one
The potential safety hazard that bed is brought, high-speed steel shaving knife demand is cancelled simultaneously, has saved cost, and shaving is changed to use face milling cutters milling face
Afterwards, surface quality is improved, and shaving is changed to use behind face milling cutters milling face, dither effect is reduced, and machine tooling is steady, and lathe shakes
It is dynamic to significantly reduce；Otic placode boss and preceding fork plate boss are welded on outside, use school pin and high-speed steel before no longer needing is proofreaded
Bar is gesticulated, and has been changed to direct use school pin check and correction boss outer surface.
For the first attachment means, the first inner sleeve makes it not rotated with the motion of oil cylinder by the first limited block,
And the first overcoat and the contact of the first inner sleeve, therefore, the first overcoat will not also rotate；First anti-rotation is installed on otic placode axle
Block, the first Anti-rotary block holding is in the first locating slot, and otic placode axle is locked by the first pad and the first locking nut, therefore, ear
Board shaft will not also be rotated with the rotation of oil cylinder.So, otic placode axle is motionless, the first inner sleeve is motionless, the first overcoat is also motionless, only
There is oil cylinder around otic placode axle in rotation.By the analysis of said structure, key wear position is located at the inner side of the first inner sleeve, and by
The position of bearing of bending stress caused by otic placode axle has been moved in the first overcoat and first and put, and so abrasion is just main by the
One overcoat, the first inner sleeve undertake, and reprocess if desired, it is only necessary to change the first overcoat and the first inner sleeve both can, reduce maintenance
Cost, while the swing arm also protected.
For the second attachment means, the second inner sleeve makes it not rotated with the motion of dipper by the second limited block,
And the second overcoat and the contact of the second inner sleeve, therefore, the second overcoat will not also rotate；Second anti-rotation is installed on jointed shaft
Block, the second Anti-rotary block holding is in the second locating slot, and jointed shaft is locked by the second pad and the second locking nut, therefore, hinge
Spindle will not also be rotated with the rotation of dipper.So, jointed shaft is motionless, the second inner sleeve is motionless, the second overcoat is also motionless, only
There is dipper around jointed shaft in rotation.By the analysis of said structure, key wear position is located at the inner side of the second inner sleeve, and by
The position of bearing of bending stress caused by jointed shaft has been moved in the second overcoat and second and put, and so abrasion is just main by the
Two overcoats, the second inner sleeve undertake, and reprocess if desired, it is only necessary to change the second overcoat and the second inner sleeve both can, reduce maintenance
Cost, while the swing arm also protected.
Claims (10)
1. a kind of excavator swing arm dipper assembly, including swing arm, dipper and oil cylinder；Otic placode, otic placode are welded with the middle part of swing arm
Two are provided with, otic placode is provided with the first mounting hole, fork plate before being welded with the front end of swing arm, preceding fork plate is provided with two, front fork
Plate is provided with the second mounting hole；It is characterized in that：
Otic placode boss is welded with the outside of otic placode；Fork plate boss before being welded with the outside of preceding fork plate；Otic placode and oil cylinder it
Between be provided with the first attachment means, between preceding fork plate and dipper be provided with the second attachment means；
The first described attachment means include otic placode axle, the first overcoat, the first inner sleeve, the first pad and the first locking nut, ear
One end of board shaft has first shaft shoulder, and otic placode axle passes through two otic placodes, wherein the lateral surface of an otic placode withstands first shaft shoulder, in place
There is the first locating slot in being fixed with the otic placode of the first shaft shoulder side on the first locating piece, the first locating piece, in first shaft shoulder
On be fixed with the first Anti-rotary block, one end holding of the first Anti-rotary block is in the first locating slot；The first described overcoat includes first
Extrapolation female connector and the first outward flange, the first outward flange are located at the outer end of the first extrapolation female connector, and the first extrapolation female connector is enclosed on otic placode axle
On, the first extrapolation female connector passes through otic placode, and the medial surface of the first outward flange is contacted with the lateral surface of otic placode boss；In the inner side of otic placode
The first limited block is fixed with face；Put in first provided with the first stopper slot, the first inner sleeve is enclosed on otic placode axle, the first inner sleeve position
In the inner side of otic placode, the first limited block holding is in the first stopper slot, the end face outside of the first inner sleeve and the first extrapolation female connector
Medial surface is in contact；The first pad is being provided with away from first shaft shoulder and positioned at the outside of another otic placode, the first pad is compressed on the
On one outward flange, the first locking nut provided with the first pad of locking on otic placode axle；Oil cylinder is hinged on positioned at two first inner sleeves
Otic placode axle on, the contacts side surfaces of the first inner sleeve and oil cylinder；
The second described attachment means include jointed shaft, the second overcoat, the second inner sleeve, the second pad and the second locking nut, hinge
One end of spindle has second shaft shoulder, and jointed shaft is through fork plate before two, wherein the lateral surface of fork plate withstands second shaft shoulder before one,
Being fixed with the preceding fork plate positioned at the second shaft shoulder side on the second locating piece, the second locating piece has the second locating slot, the
The second Anti-rotary block is fixed with two shaft shoulders, one end holding of the second Anti-rotary block is in the second locating slot；The second described overcoat bag
The second extrapolation female connector and the second outward flange are included, the second outward flange is located at the outer end of the second extrapolation female connector, and the second extrapolation female connector is enclosed on
On jointed shaft, the second extrapolation female connector passes through preceding fork plate, and the medial surface of the second outward flange is contacted with the lateral surface of preceding fork plate boss；
The second limited block is fixed with the medial surface of preceding fork plate；Put in second provided with the second stopper slot, the second inner sleeve is enclosed on jointed shaft
On, the second inner sleeve be located at preceding fork plate inner side, the second limited block holding in the second stopper slot, the end face outside of the second inner sleeve with
The medial surface of second extrapolation female connector is in contact；The second pad is being provided with away from second shaft shoulder and positioned at the outside of another preceding fork plate,
Second pad is compressed on the second outward flange, the second locking nut provided with the second pad of locking on jointed shaft；Dipper is hinged
On the jointed shaft positioned at two second inner sleeves, the contacts side surfaces of the second inner sleeve and dipper.
2. excavator swing arm dipper assembly according to claim 1, it is characterised in that：It is provided with the end face of first shaft shoulder
First clamping groove, one end holding of the first Anti-rotary block is in the first clamping groove, and the first Anti-rotary block is fixed on by the first screw
On one shaft shoulder；On the end face of second shaft shoulder be provided with the second clamping groove, one end holding of the second Anti-rotary block in the second clamping groove,
Second Anti-rotary block is fixed on second shaft shoulder by the second screw.
3. excavator swing arm dipper assembly according to claim 1, it is characterised in that：The first described Anti-rotary block includes the
One connecting plate and the first holding block being fixed on the first connecting plate, the first holding block holding is in the first locating slot；Described
Second Anti-rotary block includes the second connecting plate and the second holding block being fixed on the second connecting plate, and the second holding block holding is second
In locating slot.
4. excavator swing arm dipper assembly according to claim 1, it is characterised in that：Have between first inner sleeve and otic placode
Gap；There is gap between second inner sleeve and preceding fork plate.
5. excavator swing arm dipper assembly according to claim 1, it is characterised in that：First stopper slot and the first limited block
Between have gap, between the second stopper slot and the second limited block have gap.
6. excavator swing arm dipper assembly according to claim 1, it is characterised in that：It is provided with the lateral surface of the first inner sleeve
First annular groove, the first extrapolation female connector is inserted into first annular groove.
7. excavator swing arm dipper assembly according to claim 1, it is characterised in that：Set between the first inner sleeve and otic placode
There is the first cushion, the second cushion is provided between the second inner sleeve and otic placode.
8. a kind of assembly method of the excavator swing arm dipper assembly described in claim 1, it is characterised in that：Including the first connection
The installation method of the installation method and the second attachment means and dipper of device and oil cylinder；
Wherein, the installation method of the first attachment means and oil cylinder is：
（1）First overcoat is installed；
（2）First inner sleeve is installed, allowed in the first limited block holding to the first stopper slot, while allowing the medial surface of the first extrapolation female connector
Contacted with the lateral surface of the first inner sleeve；
（3）One end of oil cylinder is installed between two first inner sleeves；
（4）First Anti-rotary block is installed on first shaft shoulder, allows otic placode axle to pass through the first overcoat and the first inner sleeve, allows the first anti-rotation
Block holding is in the first locating slot；
（5）First pad and the first locking nut are installed；
The installation method of second attachment means and dipper is：
（a）Second overcoat is installed；
（b）Second inner sleeve is installed, allowed in the second limited block holding to the second stopper slot, while allowing the medial surface of the second extrapolation female connector
Contacted with the lateral surface of the second inner sleeve；
（c）One end of oil cylinder is installed between two second inner sleeves；
（d）Second Anti-rotary block is installed on second shaft shoulder, allows otic placode axle to pass through the second overcoat and the second inner sleeve, allows the second anti-rotation
Block holding is in the second locating slot；
（e）Second pad and the second locking nut are installed.
9. the assembly method of excavator swing arm dipper assembly according to claim 8, it is characterised in that：In first shaft shoulder
End face is provided with the first clamping groove, and one end holding of the first Anti-rotary block is in the first clamping groove, and the first Anti-rotary block passes through the first spiral shell
Nail is fixed on first shaft shoulder；It is provided with the second clamping groove on the end face of second shaft shoulder, one end holding of the second Anti-rotary block is the
In two clamping grooves, the second Anti-rotary block is fixed on second shaft shoulder by the second screw；In assembling process, first by the first Anti-rotary block
Then holding is fixed in the first clamping groove by the first screw；First by the second Anti-rotary block holding to the second clamping groove, then
Fixed by the second screw.
10. the assembly method of excavator swing arm dipper assembly according to claim 8, it is characterised in that：In assembling process
In, there is gap between the first inner sleeve and otic placode；There is gap between second inner sleeve and preceding fork plate；First stopper slot and the first limit
There is gap between the block of position, there is gap between the second stopper slot and the second limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597506.9A CN107190794B (en) | 2017-07-21 | 2017-07-21 | Excavator movable arm and bucket rod assembly and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597506.9A CN107190794B (en) | 2017-07-21 | 2017-07-21 | Excavator movable arm and bucket rod assembly and assembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107190794A true CN107190794A (en) | 2017-09-22 |
| CN107190794B CN107190794B (en) | 2022-07-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710597506.9A Expired - Fee Related CN107190794B (en) | 2017-07-21 | 2017-07-21 | Excavator movable arm and bucket rod assembly and assembling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107190794B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179772A (en) * | 2017-12-28 | 2018-06-19 | 山推工程机械股份有限公司 | A kind of bull-dozer push rod and bull-dozer |
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| JPH11131520A (en) * | 1997-10-27 | 1999-05-18 | Yutani Heavy Ind Ltd | Operation machine of construction machinery |
| KR20090016177A (en) * | 2007-08-10 | 2009-02-13 | 임행주 | Pin for contracting the excavating equipment of the excavator |
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| CN201506988U (en) * | 2009-03-10 | 2010-06-16 | 黄巧华 | Scraper bucket of digging machine |
| US20110019949A1 (en) * | 2008-04-14 | 2011-01-27 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| CN201981562U (en) * | 2010-12-17 | 2011-09-21 | 徐州徐工挖掘机械有限公司 | Connection structure of shovel bucket and bucket rod |
| CN207194046U (en) * | 2017-07-21 | 2018-04-06 | 长沙航空职业技术学院 | A kind of excavator swing arm dipper assembly |
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2017
- 2017-07-21 CN CN201710597506.9A patent/CN107190794B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11131520A (en) * | 1997-10-27 | 1999-05-18 | Yutani Heavy Ind Ltd | Operation machine of construction machinery |
| KR20090016177A (en) * | 2007-08-10 | 2009-02-13 | 임행주 | Pin for contracting the excavating equipment of the excavator |
| US20110019949A1 (en) * | 2008-04-14 | 2011-01-27 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| CN201227742Y (en) * | 2008-06-13 | 2009-04-29 | 朱军 | Drum-type bracket using general lathe to machine large sleeve barrel |
| CN201506988U (en) * | 2009-03-10 | 2010-06-16 | 黄巧华 | Scraper bucket of digging machine |
| CN201981562U (en) * | 2010-12-17 | 2011-09-21 | 徐州徐工挖掘机械有限公司 | Connection structure of shovel bucket and bucket rod |
| CN207194046U (en) * | 2017-07-21 | 2018-04-06 | 长沙航空职业技术学院 | A kind of excavator swing arm dipper assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108179772A (en) * | 2017-12-28 | 2018-06-19 | 山推工程机械股份有限公司 | A kind of bull-dozer push rod and bull-dozer |
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| Publication number | Publication date |
|---|---|
| CN107190794B (en) | 2022-07-12 |
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Granted publication date: 20220712 |