CN101575862A - Idler wheel support structure of excavator telescopic boom - Google Patents
Idler wheel support structure of excavator telescopic boom Download PDFInfo
- Publication number
- CN101575862A CN101575862A CNA2009100521775A CN200910052177A CN101575862A CN 101575862 A CN101575862 A CN 101575862A CN A2009100521775 A CNA2009100521775 A CN A2009100521775A CN 200910052177 A CN200910052177 A CN 200910052177A CN 101575862 A CN101575862 A CN 101575862A
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- wheel support
- support structure
- idler wheel
- roller
- outer sleeve
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Abstract
The invention discloses an idler wheel support structure of an excavator telescopic boom, which comprises a bucket, a bucket rod, a telescopic oil cylinder and an outer sleeve, wherein one end of the bucket rod is connected with the bucket, and the other end thereof is inserted in the outer sleeve; one end of the telescopic oil cylinder is connected with the outer sleeve, and the other end thereof is connected with the bucket rod; the front end of the outer sleeve is provided with an idler wheel support structure; and the bottom surface of the bucket rod contacts the idler wheel support structure. The invention adds the idler wheel support structure below the bucket rod to convert the sliding friction between the bucket rod and the outer sleeve into the rolling friction between the bucket rod and the idler wheel support structure, thereby greatly reducing the wear and tear of the bucket rod and prolonging the service life of the bucket rod.
Description
Technical field
The present invention relates to excavator, design a kind of idler wheel support structure of excavator telescopic boom especially.
Background technology
The excavator that adopts telescopic arm is to finish by stretching of working arm to excavate action when work.This telescopic arm generally comprises outer sleeve and inner dipper, and hydraulic jack can drive that outer sleeve is relative with dipper to slide, thereby realizes flexible.Nylon cushion also is set on the rubbing surface between outer sleeve and the dipper, and excavator is when excavating, and dipper moves with respect to outer sleeve under stressed situation, so the nylon cushion that is on the rubbing surface is very easy to wearing and tearing, need often to change, both influenced production efficiency, increased maintenance cost again.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of idler wheel support structure of excavator telescopic boom, to overcome the above-mentioned defective of prior art.
For solving the problems of the technologies described above, idler wheel support structure of excavator telescopic boom of the present invention comprises scraper bowl, dipper, telescopic oil cylinder and outer sleeve, and an end of described dipper connects described scraper bowl, and the other end is inserted in the described outer sleeve; One end of described telescopic oil cylinder is connected on the described outer sleeve, and the other end is connected on the described dipper; The front end of described outer sleeve also is provided with an idler wheel support structure, and the bottom surface of described dipper contacts with described idler wheel support structure.
Preferably, described idler wheel support structure comprises roller and rolling wheel support, and described roller is arranged on the described rolling wheel support, and described roller can rotate on described rolling wheel support, and the bottom surface of described dipper contacts with described roller.
Further, the both sides of the fixing described outer sleeve of described rolling wheel support.
Further, described rolling wheel support comprises biside plate and two bearings, and a big hole is set on the described side plate, and described bearing is arranged in the described big hole, and the two ends of described roller are separately positioned in the two described bearings.
Further, an outer baffle is set on the described side plate, the outer ring of the spacing described bearing of described outer baffle, the two ends of described roller are provided with an Internal baffle, and the inner ring of the spacing described bearing of described Internal baffle is a matched in clearance between described Internal baffle and the described outer baffle.
Further, connect a connecting plate between the described biside plate.
Further, between the inner face of bearing and roller a shrouding being set also, is matched in clearance between described shrouding and the described side plate.
Further, the rear end of described dipper also is fixed with rear roller, and described rear roller contacts with described outer sleeve inwall.
The present invention has increased idler wheel support structure below dipper, with the sliding friction between dipper and the outer sleeve, change the rolling friction of dipper and idler wheel support structure into, wearing and tearing have been significantly reduced, prolonged the application life of dipper, avoid the trouble of frequent replacing nylon cushion, improved production efficiency, reduced maintenance cost.
Description of drawings
Fig. 1 is the structural representation of excavator telescopic boom.
Fig. 2 is the schematic diagram of the dipper that is connected with scraper bowl.
Fig. 3 is the schematic diagram of idler wheel support structure of the present invention.
Fig. 4 is the structure chart of roller.
Fig. 5 is the end view of roller.
Fig. 6 is the structure chart of side plate.
Fig. 7 is the lateral view of Fig. 6.
Fig. 8 is the structure chart of outer baffle.
Fig. 9 is the lateral view of Fig. 8.
Figure 10 is the structure chart of Internal baffle.
Figure 11 is the lateral view of Figure 10.
Reference numeral is as follows:
1, scraper bowl 423, connecting plate
2, dipper 424, shrouding
3, telescopic oil cylinder 425, outer baffle
4, idler wheel support structure 426, Internal baffle
41, roller 427, bolt
42, rolling wheel support 5, outer sleeve
421, side plate 6, rear roller
422, bearing
The specific embodiment
Hereinafter with reference to the accompanying drawings idler wheel support structure of excavator telescopic boom of the present invention is described in detail.
As depicted in figs. 1 and 2, the present invention includes dipper 2 and scraper bowl 1, an end of dipper 2 is connected on the scraper bowl 1, and the other end of dipper 2 is inserted in the outer sleeve 5.Telescopic oil cylinder 3 also is set in the outer sleeve 5, and on an end of telescopic oil cylinder 3 (oil cylinder part) the fixed jacket tube 5, the other end (piston rod part) is fixed on the dipper 2.Along with stretching of telescopic oil cylinder 3, outer sleeve 5 maintains static, and then dipper 2 will be done elastic motion with respect to outer sleeve 5.In order to reduce the friction between dipper 2 and the outer sleeve 5, front end at outer sleeve 5 is provided with an idler wheel support structure 4, in order to support the bottom surface of dipper 2, so just mainly bear downward pressure by idler wheel support structure 4, alleviated the friction of external sleeve lining greatly.
Idler wheel support structure 4 comprises roller 41 and rolling wheel support 42.Rolling wheel support 42 is fixed on the end of outer sleeve 5, in order to support roller 41.Roller 41 can roll on rolling wheel support 42.Like this, dipper 2 is supported by roller 41, the sliding friction between dipper 2 and the outer sleeve 5 is become sliding friction between dipper 2 and the roller 41, has reduced the suffered frictional force of dipper 2 well, has reduced the wearing and tearing of dipper 2.
Because the length of dipper 2 is longer, so, also be fixed with rear roller 6 in the rear end of dipper 2.Rear roller 6 contacts with outer sleeve 5 inwalls, as shown in Figure 1.
The structure of roller 41 is provided with a plurality of screwed holes as shown in Figure 4 and Figure 5 on the end face of roller 41.
As shown in Figure 3, rolling wheel support 42 comprises structures such as side plate 421, bearing 422, shrouding 424, outer baffle 425, Internal baffle 426.The structure of side plate 421 as shown in Figure 6 and Figure 7.Side plate 421 is welded on the two ends of outer sleeve 5.Side plate 421 comprises a rectangular slab and a circular slab, and this rectangular slab and circular slab weld together, and the middle part of side plate 421 is provided with a big hole, and the two ends of roller 41 are arranged in this big hole by bearing 422.In fact side plate 421 plays the effect of bearing support.
On circular slab, outside the circumference of big hole, some screwed holes are set.Outer baffle 425 is fixed on the circular slab by bolt 427, and outer baffle 425 is used to limit the outer ring of bearing 422.The structure of outer baffle 425 such as Fig. 8 and shown in Figure 9.
Internal baffle 426 is fixed on the two ends of roller 41 by bolt 427, and Internal baffle 426 is used to limit the inner ring of bearing 422.Be matched in clearance between Internal baffle 426 and the outer baffle 425.Internal baffle 426 can rotate freely in outer baffle 425 under the drive of roller 41.The structure of Internal baffle 426 is shown in Figure 10 and 11.
Between the inner face of bearing 422 and roller 41 shrouding 424 is set also, shrouding 424 is a matched in clearance with side plate 421, and shrouding 424 can rotate freely in the big hole of side plate 421.
One connecting plate 423 is set between the side plate 421 at roller 41 two ends, and connecting plate 423 couples together the side plate 421 at roller 41 two ends, plays and strengthens fixing effect.Connected mode between connecting plate 423 and the biside plate 421 is welding.
Above-mentioned design example only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substantial equivalence means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (8)
1. an idler wheel support structure of excavator telescopic boom comprises scraper bowl (1), dipper (2), telescopic oil cylinder (3) and outer sleeve (5), and an end of described dipper (2) connects described scraper bowl (1), and the other end is inserted in the described outer sleeve (5); One end of described telescopic oil cylinder (3) is connected on the described outer sleeve (5), and the other end is connected on the described dipper (2); It is characterized in that: the front end of described outer sleeve (5) also is provided with an idler wheel support structure, and the bottom surface of described dipper (2) contacts with described idler wheel support structure (4).
2. idler wheel support structure of excavator telescopic boom according to claim 1, it is characterized in that: described idler wheel support structure (4) comprises roller (41) and rolling wheel support (42), described roller (41) is arranged on the described rolling wheel support (42), described roller (41) can be gone up at described rolling wheel support (42) and rotate, and the bottom surface of described dipper (2) contacts with described roller (41).
3. idler wheel support structure of excavator telescopic boom according to claim 2 is characterized in that: the both sides of the fixing described outer sleeve (5) of described rolling wheel support (42).
4. idler wheel support structure of excavator telescopic boom according to claim 2, it is characterized in that: described rolling wheel support (42) comprises biside plate (421) and two bearings (422), described side plate is provided with a big hole on (421), described bearing (422) is arranged in the described big hole, and the two ends of described roller (41) are separately positioned in the two described bearings (422).
5. idler wheel support structure of excavator telescopic boom according to claim 4, it is characterized in that: an outer baffle (425) is set on the described side plate (421), the outer ring of the spacing described bearing of described outer baffle (425) (422), the two ends of described roller (41) are provided with an Internal baffle (426), the inner ring of the spacing described bearing of described Internal baffle (426) (422) is a matched in clearance between described Internal baffle (426) and the described outer baffle (425).
6. idler wheel support structure of excavator telescopic boom according to claim 4 is characterized in that: connect a connecting plate (423) between the described biside plate (421).
7. idler wheel support structure of excavator telescopic boom according to claim 4 is characterized in that: between the inner face of bearing (422) and roller (41) shrouding (424) being set also, is matched in clearance between described shrouding (424) and the described side plate (421).
8. idler wheel support structure of excavator telescopic boom according to claim 1 is characterized in that: the rear end of described dipper (2) also is fixed with rear roller (6), and described rear roller (6) contacts with described outer sleeve (5) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100521775A CN101575862B (en) | 2009-05-27 | 2009-05-27 | Excavator telescopic boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100521775A CN101575862B (en) | 2009-05-27 | 2009-05-27 | Excavator telescopic boom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101575862A true CN101575862A (en) | 2009-11-11 |
| CN101575862B CN101575862B (en) | 2012-05-09 |
Family
ID=41270918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100521775A Expired - Fee Related CN101575862B (en) | 2009-05-27 | 2009-05-27 | Excavator telescopic boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101575862B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644304A (en) * | 2011-02-21 | 2012-08-22 | 日立建机株式会社 | Deeply excavating excavator |
| CN102704516A (en) * | 2010-10-20 | 2012-10-03 | 哈尼施费格尔技术公司 | A system for limiting contact between a dipper and a shovel boom |
| CN103835326A (en) * | 2012-11-26 | 2014-06-04 | 刘素华 | Method for arranging rocker arm rolling friction retractable rolling sections in parallel mode and rocker arm rolling stroke section parallel arranging digger or loader |
| US9745721B2 (en) | 2012-03-16 | 2017-08-29 | Harnischfeger Technologies, Inc. | Automated control of dipper swing for a shovel |
-
2009
- 2009-05-27 CN CN2009100521775A patent/CN101575862B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704516A (en) * | 2010-10-20 | 2012-10-03 | 哈尼施费格尔技术公司 | A system for limiting contact between a dipper and a shovel boom |
| CN102704516B (en) * | 2010-10-20 | 2015-12-02 | 哈尼施费格尔技术公司 | For limiting the system of the Contact of scraper bowl and excavator boom |
| CN102644304A (en) * | 2011-02-21 | 2012-08-22 | 日立建机株式会社 | Deeply excavating excavator |
| CN102644304B (en) * | 2011-02-21 | 2016-01-13 | 日立建机株式会社 | Deep excavator |
| US9745721B2 (en) | 2012-03-16 | 2017-08-29 | Harnischfeger Technologies, Inc. | Automated control of dipper swing for a shovel |
| US10655301B2 (en) | 2012-03-16 | 2020-05-19 | Joy Global Surface Mining Inc | Automated control of dipper swing for a shovel |
| CN103835326A (en) * | 2012-11-26 | 2014-06-04 | 刘素华 | Method for arranging rocker arm rolling friction retractable rolling sections in parallel mode and rocker arm rolling stroke section parallel arranging digger or loader |
| CN103835325A (en) * | 2012-11-26 | 2014-06-04 | 刘素华 | Method for rolling friction stretching and retracting of rocker and rolling friction stretching and retracting digger or loader of rocker |
| WO2014082376A1 (en) * | 2012-11-26 | 2014-06-05 | Liu Suhua | Rocker arm rolling friction-based extension and retraction method, and rocker arm rolling friction-based extendable and retractable extractor and loader |
| CN103835325B (en) * | 2012-11-26 | 2017-01-18 | 刘素华 | Method for rolling friction stretching and retracting of rocker and rolling friction stretching and retracting digger or loader of rocker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101575862B (en) | 2012-05-09 |
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Granted publication date: 20120509 Termination date: 20130527 |