CN102605825A - Mining excavator and rotating rolling support device thereof - Google Patents
Mining excavator and rotating rolling support device thereof Download PDFInfo
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- CN102605825A CN102605825A CN2011104426048A CN201110442604A CN102605825A CN 102605825 A CN102605825 A CN 102605825A CN 2011104426048 A CN2011104426048 A CN 2011104426048A CN 201110442604 A CN201110442604 A CN 201110442604A CN 102605825 A CN102605825 A CN 102605825A
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Abstract
The invention discloses a mining excavator and a rotating rolling support device thereof. The rotating rolling support device is used for connecting an upper mechanism with a lower mechanism of the mining excavator and comprises a roller device, a gear ring, upper roller beds, lower roller beds and lateral roller beds, rollers of the roller device roll on the upper roller beds, the lower roller beds and the lateral roller beds, the upper roller beds are fixedly connected to the bottom of a rotating main platform of the upper mechanism, the lower roller beds and the lateral roller beds are disposed on the gear ring below the roller device, the gear ring is provided with a top plate, gear ring portions and a bottom plate, the lower roller beds and the lateral roller beds are arranged on the top of the top plate, the gear ring portions are arranged on side surfaces of the gear ring and positioned on the opposite outer sides of the top plate, and the bottom plate is fixedly connected with an underframe beam of the lower mechanism. The rotating rolling support device has the advantages that the service life can be prolonged, and abraded parts can be replaced advantageously.
Description
Technical field
The present invention relates to the excavator technical field, relate in particular to a kind of mine excavator that is used for the revolution rolling support device of mine excavator and has this revolution rolling support device.
Background technology
Mine excavator is a kind of important heavy type mining machinery; For mine excavator; As shown in Figure 1, mine excavator mainly comprises the rotating mechanism (abbreviating upper mechanism as) on top, the support underframe walking mechanism (abbreviation lower mechanisms) and the revolution rolling support device that is connected upper mechanism and lower mechanisms of bottom.
As shown in Figure 1; Mine excavator comprises the scraper bowl 1 that excavates material, the dipper 2 that can move forward and backward, support with boom 3, the boom hoist cable 4 that promotes scraper bowl 1, the guy wire 5 that supports weighing arm 3, operation drivers' cab 6, fixedly the main platform of the revolution of all rotatable parts of ballast box 10, the said upper mechanism of support of support 7, dedusting ventilation installation 8, the machine room 9 that is used to place equipment such as hoisting mechanism and regulator cubicle, the placement mass of guy wire 5 11, the slew gear 12 of rotary motive power etc. is provided; More than constitute said upper mechanism, said upper mechanism all is fixed on the main platform 11 of revolution.
As shown in Figure 1, lower mechanisms by the crawler unit 16 that provides walking power and kiss the earth to support said mine excavator for said mine excavator, is connected track frame and turn round rolling support device undercarriage bea device 15, be said upper mechanism and lower mechanisms central axis 14 that centrally-located is provided etc.
And revolution rolling bearing device 13 is to be arranged between revolution main platform 11 and the undercarriage bea device 15, for the rotation of upper mechanism provides support.
As shown in Figure 2, revolution rolling support device 13 comprises roller device 90, bull gear 96 and limits top roller-way 91, bottom roller-way 94 and the side direction roller-way 95 of the roller rolled of roller device 90; Top roller-way 91 is fixedly connected on the main platform of revolution 11 bottoms of said upper mechanism, and top roller-way 91 is made up of former and later two semicircular ring usually; Roller device 19 is through on the retainer 93 in being bolted to; Bottom roller-way 94 directly is fixedly connected on undercarriage bea device 15, the inboard of bull gear 96; Bottom roller-way 94 is normally made a whole roller-way.Bull gear 96 is meshed with the pinion 24 of slew gear 12, is the center with central axis 14, drives whole upper mechanism and rotates.Bull gear and pinion are the normal addresses of passing through of this area, and " greatly " of the bull gear 96 here is big with respect to pinion 24 sizes, and " little " of pinion 24 also is little with respect to bull gear 96 sizes simultaneously.The cross section of bull gear 96 is the L type, and the underrun location steel bushing 97 of bull gear 96 is connected in the undercarriage bea device with bolt 98.
For the lifting of the performance of mine excavator, the revolution rolling support device plays important effect, and the revolution rolling support device separates upper mechanism and lower mechanisms, thereby the said upper mechanism of mine excavator can 360 ° be rotated freely.Because the working site of mine excavator is the open-air mining area that dust is big, the equipment vibrations are big; And the mine excavator own vol is big, load-bearing is big, drive gap is big; Add the restriction of present material and heat treatment technics present situation; The inner component of supporting roller channel that cause turning round rolling support device lost efficacy comparatively fast, needed often to change.
Particularly, mainly there is following defective in the revolution rolling support device of prior art:
A) as shown in Figure 3, omitted all the other upper mechanisms except that the main platform 11 of revolution among Fig. 3, the wear-out part of revolution rolling support device 13 needs repairing when changing, and needs whole upper mechanism jack-up is arrived the central axis 14 in the middle of all breaking away from.Therefore, maintain and replace is brought inconvenience;
When b) bottom roller-way 94 needs to change, must bull gear 96 all be unloaded, and need bottom roller-way 94 integral replacings;
Need integral replacing when c) changing top roller-way 91, and the connector of top roller-way 91 do not have the keeper of the positioning action of playing yet, need centering again when new top roller-way 91 is installed yet;
D) the side direction roller-way 95 of prior art comes down to be formed by bull gear 96 inner faces, does not therefore have independently side direction roller-way;
E) top roller-way 91 be fixed as the welding baffle-type, for example baffle plate 92 is used for fixing top roller-way 91, the connected mode of its welding is unfavorable for that on-the-spot wear-out part changes operation; And bottom roller-way 94 is to be pushed down by the seam of bull gear 96 lower inside, therefore changes inconvenient.
F) side direction roller-way 95 directly is formed at bull gear 96 inboards, and side direction roller-way 95 takes place to need to change bull gear 96 behind the relative wear;
G) bull gear 96 adopts common location steel bushing 97 to be connected with bolt 98, is unfavorable for transmitting big moment of torsion, influences the operational reliability of bull gear 96.
To sum up, obviously the mine excavator of prior art revolution rolling support device to the very inconvenience of maintaining of equipment, is wasted time and energy when especially changing wear-out part, and running cost is higher.
Summary of the invention
To the problem that exists in the prior art; The object of the present invention is to provide a kind of heavily loaded easily changeable revolution rolling support device that is used for mine excavator; Overcome the very inconvenience of maintaining of prior art revolution rolling support device; Waste time and energy the running cost technical problems of high when changing wear-out part.
Another object of the present invention is to provide a kind of the present invention of having to turn round the mine excavator of rolling support device.
The present invention realizes through following technical scheme:
A kind of revolution rolling support device; Being connected between the upper mechanism that is used for mine excavator and the lower mechanisms, said revolution rolling support device comprises top roller-way, bottom roller-way and the side direction roller-way of the roller rolled of roller device, gear ring and the said roller device of qualification; Said top roller-way is fixedly connected on the main platform of the revolution bottom of said upper mechanism; Said bottom roller-way and said side direction roller-way are arranged on the said gear ring of said roller device below, and said gear ring has: top plate portion, and said bottom roller-way and side direction roller-way are arranged at the end face of said top plate portion; The gear ring part is arranged at the side of said gear ring, the relative outside of said top plate portion; Bottom parts is fixedly connected on the undercarriage bea device of said lower mechanisms.
Mine excavator of the present invention has revolution rolling support device of the present invention.
Beneficial effect of the present invention is, compares with prior art, and revolution rolling support device of the present invention and mine excavator of the present invention have the following advantages:
1, the gear ring of being made up of top plate portion, gear ring part and bottom parts substitutes bull gear of the prior art, has realized reliable high pulling torque transmission, has guaranteed the safety of gear ring.
2, the side direction roller-way is independently installed, and when to gear ring effective protection being provided, the side direction roller-way is changed also convenient.
3, all roller-ways comprise that top roller-way, bottom roller-way and side direction roller-way have all adopted or all can adopt segmented roller-way structure, fix with bolt connecting mode, and are easy to operate during replacing.
4, the mode of seam has all been adopted in the location of all roller-ways, need not look for benchmark during replacing, does not need centering again again.
5, improved the position of bottom roller-way, wear-out parts such as field replacement roller, roller-way are easy to operate, do not need again whole upper mechanism jack-up to be arrived the central axis in the middle of all breaking away from, and time saving and energy saving, efficient is high, shortens maintenance cycle greatly.
6, improve the application life of whole revolution rolling support device, improved the production efficiency of mine excavator greatly.
Description of drawings
Fig. 1 is the mine excavator structural representation;
Fig. 2 also is the A portion enlarged drawing among Fig. 1 for the structural representation of prior art revolution rolling support device;
Fig. 3 is the sketch map of the replacing rolling system of prior art revolution rolling support device.
Fig. 4 is the structural representation of the revolution rolling support device of the embodiment of the invention;
Fig. 5 is a top roller-way scheme of installation, also is the B-B sectional view among Fig. 4;
Fig. 6 is a bottom roller-way scheme of installation, also is the D-D sectional view among Fig. 4;
Fig. 7 is the roller device sketch map in the embodiment of the invention;
Fig. 8 is the fixedly sketch map of the gear ring of the embodiment of the invention, also is the F-F sectional view among Fig. 4;
Fig. 9 is the C-C sectional view among Fig. 5;
Figure 10 is the E-E sectional view among Fig. 6;
Figure 11 is the G-G sectional view among Fig. 5;
Figure 12 is a H-H sectional view among Fig. 7;
Figure 13 is an I portion enlarged drawing among Figure 12;
Figure 14 is the E-E sectional view of the another kind of symbol mark among Fig. 6.
Figure 15 is the sketch map of the assembling bolt in the embodiment of the invention.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the present invention.
The mine excavator of the embodiment of the invention, the mine excavator revolution rolling support device with embodiment of the invention.
Interior and outer in this manual is to distinguish with the distance of central axis 14, and the side that decentre axle 14 is near is called the inboard, otherwise is the outside.
The revolution rolling support device of the embodiment of the invention; Be the easily changeable revolution rolling support device of a kind of heavy duty, comprise segmented top roller-way 18 with bolt, through the fixing roller device 19 of roller frame, through bottom parts 220 be fixedly connected on undercarriage bea device 15 gear ring 22, be arranged at bolted segmented bottom roller-way 20 and side direction roller-way 21 on the end face 50 of top plate portion 221 of gear ring 22.
Specifically introduce the structure and the assembling of top roller-way 18, roller device 19, bottom roller-way 20, side direction roller-way 21 and gear ring 22 below respectively.
One, the top roller-way 18
Like Fig. 4 and shown in Figure 9; Welding is used to install the installation steel plate 17 of top roller-way 18 on the lower cover 110 of the main platform 11 of the revolution of said upper mechanism; The cross section that steel plate 17 is installed is the L type, and the soffit that steel plate 17 is installed is a locating surface 27, and downside is a positioning spigot face 28; Offer bolt hole 29,30 on the locating surface 27 respectively, be used for installing and top, location roller-way 18.The soffit that steel plate 17 can be welded in lower cover 110 is installed.
As shown in Figure 9, top roller-way 18 is " ring rail " shape, and as shown in Figure 5, top roller-way 18 is segmented preferably, is promptly combined by a plurality of segmentation roller-ways, and preferred, top roller-way 18 can be made up of eight segmentation roller-ways,
The upper roll road has the conical surface 32 and installing hole 33,34; And locating surface 35 and 36; Wherein locating surface 35 cooperates with positioning spigot face 28; And locating surface 36 cooperates with locating surface 27, and installing hole 33 cooperates with installing hole 29, installing hole 34 cooperates with installing hole 30, through securing member 25, the 26 fixing location that form top roller-way 18.Securing member 25,26 for example is a check bolt.
Like Fig. 5 and shown in Figure 11; Preferred between the top roller-way 18 of each segmentation through contact surface 37 combinations; And contact surface 37 is the inclined-plane, also is the axle center place straight line of central axis 14 and the plane parallel at place, this inclined-plane, rather than the plane at this place, inclined-plane of process; This ramp structure can be shared stressed effect so that between the two adjacent segmentation roller-ways mutual support is arranged.Eight segmentation roller-ways are divided into two groups, and semicircular ring of per four segmentation roller-ways composition is between the semicircular ring, shown in figure 11 in twos, reserves the gap in the bottom of the main platform 11 of revolution and is used for installing reinforcement fixed head 31, with further fixedly top roller-way 18.Only face is by dead with the segmentation roller-way to strengthen fixed head 31, and nothing connects.Shown in figure 11, strengthen fixed head 31 and weld together, to prevent that fixedly strengthening fixed head 31 moves axially with the locating surface 27 that steel plate 17 is installed.
Compare top roller-way 18 fixed forms of prior art, increased positioning spigot face 28, top roller-way 18 changes segmented into, processes, installs, changes convenient and swift with assurance.Change the fixed form of top roller-way 18 into bolt fixed mode by the pressing plate welding manner, increased and be used for circumferentially spacing reinforcement fixed head 31.Simultaneously, top of the present invention roller-way 18 can be wide and thin than the top roller-way 91 of prior art, and the purpose that top roller-way 18 is widened improves application life for the contact surface of lengthening top roller-way 18 with roller 44.And can improve its thermal treatment quality for the attenuation of top roller-way 18, thus improve its intensity and application life, reduced weight simultaneously, be convenient to change.Therefore when being convenient to locate top roller-way 18, when top roller-way 18 needed to change, one-time positioning was installed and is got final product in situ, does not need centering again.The face that top roller-way 18 contacts with roller 44 is the conical surface 32; Its bus intersection point is that conical surface summit is on the straight line of the place, axle center of central axis 14; Relative motion between assurance roller 44 and the roller-way 18 has only rolling and does not have relatively and slide, the application life of raising roller 44 and roller-way 18.
Two, roller device 19
Shown in figure 13; All rollers 44 all link together through roller pin 41, bolt 42, guide 45 and roller frame as securing member; Roller device 19 is around its center line. in the time of rotation, produce revolution, to rotate and to support the weight of whole upper mechanism with the main platform 11 of revolution.Roller pin 41 rotate along the direction of roller 44 revolution, but itself does not bear the weight of the upper mechanism of mine excavator except fixing roller 44.Roller pin 41 is connected through bolt 42 with roller frame, roller 44, and having in the middle of the bolt 42 can be to the passage of roller 44 inner oilings.
Shown in figure 13, roller 44 is the conical surface 46 with the face that top roller-way 18 contacts with bottom roller-way 20, intersects after the conical surface 46 prolongs on the straight line of the place, axle center of central axis 14, and is shown in figure 12.Compared with prior art, increase pump nozzle 43 in the roller device 19, increased outer retainer 39, can ensure when roller 44 prolongs roller-way rotation and location, can change roller easily, and can guarantee roller 44 inner lubricating.Simultaneously, bottom of the present invention roller-way 20 can be wide and thin than the bottom roller-way 94 of prior art, and the purpose that bottom roller-way 20 is widened improves application life for the contact surface of lengthening with roller 44.And can improve its thermal treatment quality for the attenuation of top roller-way 18, thus improve its intensity and application life, reduced weight simultaneously, be convenient to change.
Three, bottom roller-way 20, side direction roller-way 21 and gear ring 22
Shown in figure 10, gear ring 22 is divided into three parts, i.e. top plate portion 221, gear ring part 222 and bottom parts 220.Gear ring part 222 wherein is meshed with the pinion 24 of slew gear 12, is the center with central axis 14, drives whole upper mechanism and rotates.
Like Fig. 6, Figure 10 and shown in Figure 14, bottom roller-way 20 is installed in the top plate portion of gear ring 22, and bottom roller-way 20 is divided into plurality of sections, preferably also is divided into eight sections.Equally, the bottom roller-way of each segmentation 20 is preferred to be combined through contact surfaces 49, and contact surface 49 also is the inclined-plane, and its effect is identical with top roller-way 18, repeats no more.
The locating surface 73 that bottom roller-way 20 has the conical surface 57 that cooperates with roller 44, the locating surface 53 that matches with seam locating surface 52 that top plate portion 221 upper sides form, the soffit 54 that matches with the end face 50 of top plate portion 221, the side 55 that cooperates with the seam locating surface 51 of another upper side formation of top plate portion 221, the locating surface 58 that cooperates with side direction roller-way 21 medial surfaces 59, cooperates with side direction roller-way 21 bottom surfaces 74; Bottom roller-way 20 has fixing hole 69,71; Be fixed on top plate portion 221 through securing member 61,62; Securing member 61,62 check bolt preferably wherein, securing member 62 passes side direction roller-way 21, bottom roller-way 20 and top plate portion 221 successively.
Compared with prior art, bottom roller-way 20 is arranged on the top of gear ring 22, and roller 44 is exposed, and the fixing seam location and the bolt connecting mode of all adopting of bottom roller-way 20 can be changed bottom roller-way 20 and roller 44 efficiently.
Side direction roller-way 21 provides the side direction support reaction for roller 44; Guarantee the normal rotation of roller 44; Side direction roller-way 21 also is divided into plurality of sections; As shown in Figure 6; The locating surface 56 that side direction roller-way 21 has the inclined-plane 60 that cooperates with the axial end of roller 44, the locating surface 59 that cooperates with bottom roller-way 20 sides 58, the locating surface 74 that cooperates with the last plane 73 of bottom roller-way 20, cooperates with seam locating surface 51, the top of side direction roller-way 21 has fixing hole 72, is fixed on the top plate portion 221 with bottom roller-way 20 through securing member 62.
Roller-way 18 rolls with bottom roller-way 20 and gives security along top for roller 44 for side direction roller-way 21.And do not have independently side direction roller-way 21 in the prior art, and can only change bull gear 96 after the wearing and tearing, therefore revolution rolling support device of the present invention provides the structure of another kind of fixedly roller 44 shifted laterallys, helps the maintenance to equipment, practices thrift cost.Be used to install above-mentioned each locating surface and the seam of bottom roller-way 20 and side direction roller-way 21, and corresponding installing hole, all be for the installation that guarantees bottom roller-way 20 and side direction roller-way 21, change convenient and swift.
Like Fig. 8, Figure 10 and shown in Figure 14, machined surface 75, seam locating surface 66, locating hole 64 are arranged on the upper cover plate of undercarriage bea device 15.The bottom of bottom parts 220 has and lower bottom the set a roof beam in place locating surface 76 of machined surface 75 on 15 upper cover plates, the locating surface 67 that cooperates with seam locating surface 66, and has locating hole 65, cooperates through assembling bolt 63 with locating hole 64 to couple together.The assembling bolt here; Also can be called " super bolt "; Shown in figure 15; Assembling bolt 63 comprises top nut 81, fills up welding retaining washer 82, bolt 83 and the bottom nut 84 of the upper surface of being located at top bolt 81 and bottom parts 220, and bottom nut 84 comprises mother nut 842, is located at the soffit of undercarriage bea device 15 and the packing ring 841 that hardens between the pretension screw 843 at equally distributed a plurality of pretension screws 843 of mother nut 842 peripheries and pad.Wherein top nut 81 for example is a hex nut.Bolt 83 should be selected the precision height that is threaded, " exquisiteness " bolt that connection reliability is good for use, and exquisite bolt is the bolt of bolt hole and bolt external diameter precision-fit, and fit tolerance meets the bolt of CNS H7/G6; For example the M72 type of import is corresponding, needs to be equipped with " breakaway nut " that adapts with this exquisiteness bolt; Breakaway nut generally is made up of the big nut of centre and a circle Screw of big nut outer ring, and bottom nut 84 of the present invention is exactly a kind of " breakaway nut ", and big nut also is a mother nut 842; Screw also is a pretension screw 843; When fastening, do not need the mother nut 842 of complete fastening centre, through with behind the pretension screw 843 moment pretension according to the rules; Get final product the whole bottom nut 84 of pretension.Through the use of above-mentioned " precision bolt " and " breakaway nut ", can play transmitting large torque and anti-loosening function, make the pretightning force of bolt device even, error is little, the pretension tool using is simple, and is simple to operate, laborsaving." precision bolt " of the present invention specification is big but consumption is less, and the pretension number of times is few, can carry out pretension with little torque spanner, has saved the expenditure of buying special-purpose pretension instrument.
There is the end face 50 that cooperates the location with bottom roller-way 20 soffits 54 on the top of top plate portion 221, cooperates the locating surface 51 of locating with the face 52 of bottom roller-way 20 inboard seam faces 53 location, with bottom roller-way 20 outside seam faces 55 and side direction roller-way lateral surface 56; End face 50 is the upper surface of top plate portion 221; To guarantee that roller 44 exposes, be convenient to change.Top plate portion 221 tops have screwed hole 68 and 70, through securing member 61 and 62 top roller-way 20 and side direction roller-way 21 are fixed.
Compared with prior art; Gear ring of the present invention than original bull gear more than 96 top plate portion 221 and bottom parts 220; Make gear ring 22 more reliable with being connected of undercarriage bea device 15; Also change assembling bolt 63 into the locate mode that is connected of undercarriage bea device 15, improved the circumferential anti-shear ability of gear ring 22 by positioning sleeve and bolt.Improve the position of bottom roller-way 20 and roller 44 simultaneously, and reduced the thickness of top roller-way 18 and bottom roller-way 20, increased width, thereby the contact surface of extended top roller-way 18 and bottom roller-way 20 and roller 44, application life improved.When needs replacing the present invention turns round the wear-out part in the rolling support device, no longer need central axis 14 be separated with lower mechanisms fully, local detachment gets final product.Be convenient for changing each roller-way and roller 44, protected gear ring part 222, also removed the centering of reorientating from, therefore the invention provides the scheme of convenient, fast replacing wear-out part, shortened maintenance time greatly central axis 14.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (10)
1. one kind is turned round rolling support device; Being connected between the upper mechanism that is used for mine excavator and the lower mechanisms; It is characterized in that said revolution rolling support device comprises top roller-way, bottom roller-way and the side direction roller-way of the roller rolled of roller device, gear ring and the said roller device of qualification;
Said top roller-way is fixedly connected on the main platform of the revolution bottom of said upper mechanism;
Said bottom roller-way and said side direction roller-way are arranged at said gear ring, and said gear ring is arranged at the below of said roller device, and said gear ring has:
Top plate portion, said bottom roller-way and side direction roller-way are arranged at the end face of said top plate portion;
The gear ring part is arranged at the side of said gear ring, the relative outside of said top plate portion;
Bottom parts is fixedly connected on the undercarriage bea device of said lower mechanisms.
2. revolution rolling support device as claimed in claim 1 is characterized in that, the dismountable said end face that is connected in said top plate portion of said side direction roller-way.
3. revolution rolling support device as claimed in claim 2 is characterized in that, said top roller-way, said bottom roller-way and said side direction roller-way are by a plurality of segmentation roller-ways and combine.
4. revolution rolling support device as claimed in claim 3 is characterized in that, the contact surface between the adjacent said segmentation roller-way is the inclined-plane.
5. revolution rolling support device as claimed in claim 2; It is characterized in that; The connection steel plate that the lower cover bottom setting of the main platform of said revolution has positioning spigot is to connect said top roller-way, and the end face of said top plate portion also has the positioning spigot that is used to locate said bottom roller-way.
6. revolution rolling support device as claimed in claim 2 is characterized in that, retainer and outer retainer in the roller frame of said roller device comprises.
7. revolution rolling support device as claimed in claim 6; It is characterized in that; The roller pin of said roller device is connected in said interior retainer and said outer retainer through securing member, and said securing member inside is formed with oil filler point, and said roller pin inside is formed with cutting of said oil filler point connection hands over perforation mutually; The outer peripheral face of said roller pin is arranged with guide; The outer end of said securing member is provided with oil nozzle, with through said oil nozzle, and hands over the oiling between said roller pin and said guide of phase perforation through said oil filler point and said section.
8. revolution rolling support device as claimed in claim 3; It is characterized in that; Said top roller-way is connected through bolt with the lower cover of the main platform of said revolution; Said bottom roller-way is connected through bolt with the said end face of said gear ring; Said side direction roller-way is connected through bolt together with between said bottom roller-way and the said end face; Said bottom parts is fixedly connected on said undercarriage bea device through assembling bolt, and said assembling bolt comprises the top nut, fills up welding retaining washer, bolt and the bottom nut of the upper surface of being located at said top nut and said bottom parts, and said bottom nut comprises mother nut, is located at the soffit of said undercarriage bea device and the packing ring that hardens between the said pretension screw at equally distributed a plurality of pretension screws of said mother nut periphery and pad.
9. revolution rolling support device as claimed in claim 8 is characterized in that, said top roller-way and said bottom roller-way are formed by eight sections segmentation roller-ways.
10. a mine excavator is characterized in that, said mine excavator has the arbitrary described revolution rolling support device of claim 1-9.
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| CN201110442604.8A CN102605825B (en) | 2011-12-26 | 2011-12-26 | Mining excavator and rotating rolling support device thereof |
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|---|---|---|---|
| CN201110442604.8A CN102605825B (en) | 2011-12-26 | 2011-12-26 | Mining excavator and rotating rolling support device thereof |
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| CN102605825A true CN102605825A (en) | 2012-07-25 |
| CN102605825B CN102605825B (en) | 2014-09-03 |
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| CN103850283A (en) * | 2014-03-14 | 2014-06-11 | 上海三一重机有限公司 | Novel slewing bearing and engineering machinery |
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| CN103850283A (en) * | 2014-03-14 | 2014-06-11 | 上海三一重机有限公司 | Novel slewing bearing and engineering machinery |
| CN110088407A (en) * | 2016-10-27 | 2019-08-02 | 沃尔沃建筑设备公司 | The equipment of upper rotation for fixed building machinery |
| CN110088407B (en) * | 2016-10-27 | 2021-08-13 | 沃尔沃建筑设备公司 | Device for fixing the upper slewing body of a construction machine |
| CN108978763A (en) * | 2018-07-16 | 2018-12-11 | 芜湖辉林奥远自动化科技有限公司 | A kind of replacing options of the rotary track of mechanical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102605825B (en) | 2014-09-03 |
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