CN103321263A - Anti-split fixing device for excavator - Google Patents
Anti-split fixing device for excavator Download PDFInfo
- Publication number
- CN103321263A CN103321263A CN2013102018664A CN201310201866A CN103321263A CN 103321263 A CN103321263 A CN 103321263A CN 2013102018664 A CN2013102018664 A CN 2013102018664A CN 201310201866 A CN201310201866 A CN 201310201866A CN 103321263 A CN103321263 A CN 103321263A
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- CN
- China
- Prior art keywords
- excavator
- thread
- bearing pin
- fixing device
- cushion block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses an anti-split fixing device for an excavator. The anti-split fixing device is characterized in that the front end of a movable arm and a bucket rod shaft base are connected through a hinge pin with threads, the threaded end of the hinge pin is pre-tightened through a tensioning cushion block and a slotting pre-tightening nut, and a cotter pin is inserted in a hole in the threaded end of the hinge pin to limit the slotting pre-tightening nut, so that the slotting pre-tightening nut cannot loosen easily and keep tightening the position where the front end of the movable arm and the bucket rod shaft base are connected. According to the anti-split fixing device, splitting of the position where the front end of the movable arm and the bucket rod are connected due to torsion can be prevented, the service life of the fixing device is prolonged, the structure is simple, and the cost is low.
Description
Technical field
The present invention relates to a kind of swing arm front end of excavator, especially a kind of excavator is prevented the jag fastening devices.
Background technology
Swing arm and the dipper junction of existing excavator, general structure is normally connected by the bearing pin with the stop ear, be bolted by two nut block and a block pressur plate and finish spacing to bearing pin, when digging operation, operating mode is abominable, turned round frequent, it is very easily so that the wearing and tearing of swing arm front end, further cause excavator swing arm and dipper junction fit clearance to strengthen, produce noise pollution and further accelerate the wearing and tearing of counterface, also easily so that bolt fracture, pressing plate comes off the axial float of bearing pin, thereby caused the loosening of bearing pin, the application life of reducing equipment.
Summary of the invention
Purpose of the present invention provides a kind of swing arm front end to connect by the bearing pin with thread with the dipper axle bed for overcoming above-mentioned deficiency, and bearing pin band screw tooth end is by tensioning cushion block and fluting pre-load nut pretension.Insertion cottor pin cross-notching pre-load nut carries out spacing, so that the fluting pre-load nut is difficult for getting loose, keeps the pretension to swing arm front end and dipper axle bed junction, has effectively prevented swing arm front end jag.
Technical solution of the present invention is such: comprise swing arm termination, dipper axle bed, the pre-load nut of slotting, the bearing pin with thread, tensioning cushion block, it is characterized in that: the swing arm front end is connected by the bearing pin with thread with the dipper axle bed, at the band screw tooth end with the bearing pin of thread tensioning cushion block, fluting pre-load nut, cottor pin is installed and fixes.
Bearing pin one end with thread has thread construction opening pin-and-hole.
Fluting pre-load nut one end has the construction opening cotter way.
The tensioning cushion block has interior stepped counterbore.
Outstanding effect of the present invention is that the swing arm front end connects by the bearing pin with thread, and with tensioning cushion block, fluting pre-load nut, cottor pin pretension can reduce swing arm front end and dipper junction because being turned round the deflection that produces, prevent stopper arms front end jag.Prolong equipment application life, and simple in structure, with low cost, successful, replacing is convenient, applicability is good.
Description of drawings
Formation of the present invention is:
Fig. 1 is now general swing arm front end and dipper axle bed syndeton schematic diagram.
Fig. 2 is that overall structure of the present invention is installed sectional view.
Fig. 3 is the present invention's pre-load nut front view of slotting.
Fig. 4 is the present invention's pre-load nut right view of slotting.
Fig. 5 is that tensioning cushion block master of the present invention looks sectional view.
Fig. 6 is tensioning cushion block upward view of the present invention.
Fig. 7 is that the bearing pin master of band thread of the present invention looks and adds partial sectional view.
Among Fig. 1～Fig. 7, swing arm front end (1), bearing pin (2), dipper axle bed (3), pressing plate (4), hexagon-headed bolt (5), cottor pin (6), fluting pre-load nut (7), tensioning cushion block (8), the bearing pin (9) with thread, dipper axle bed (10), swing arm front end (11), construction opening pin-and-hole (12), construction opening cotter way (13), interior stepped counterbore (14).
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing, has thread and have construction opening pin-and-hole (12) with bearing pin (9) one ends of thread.Fluting pre-load nut (7) one ends have construction opening cotter way (13).Tensioning cushion block (8) has interior stepped counterbore (14).Referring to Fig. 2, be connected 11 at dipper axle bed (10) with the swing arm front end) connect by the bearing pin (9) with thread, at the aperture of loading onto tensioning cushion block (8) and screw-in fluting pre-load nut (7) with the bearing pin (9) of thread, insert cottor pin and also be embedded in the fluting of fluting pre-load nut (7).Take off so that fluting pre-load nut (7) is difficult for fluffing under various bad working environments, keep the pretightning force of swing arm front end (11) is prevented its jag.Simple in structure, easily manufactured.
The present invention only need change bearing pin (2) one end structures, increases a fluting pre-load nut (7) and tensioning cushion block (8), realizes that easily equipment improves the purpose in application life.
The present invention does not limit and uses on the equipment of hydraulic crawler excavator, may also extend into the various frame for movements that similar this two parts end faces are turned round mutually.
Claims (4)
1. an excavator is prevented the jag fastening devices, comprise swing arm termination, dipper axle bed, the pre-load nut of slotting, the bearing pin with thread, tensioning cushion block, it is characterized in that: swing arm front end (11) is connected by the bearing pin (9) with thread with dipper axle bed (10), at the band screw tooth end with the bearing pin (9) of thread tensioning cushion block (8), fluting pre-load nut (7), cottor pin (6) is installed fixing.
2. according to the anti-jag fastening devices of a kind of excavator claimed in claim 1, it is characterized in that having thread construction opening pin-and-hole (12) with bearing pin (9) one ends of thread.
3. according to the anti-jag fastening devices of a kind of excavator claimed in claim 1, pre-load nut (7) one ends that it is characterized in that slotting have construction opening cotter way (13).
4. according to the anti-jag fastening devices of a kind of excavator claimed in claim 1, it is characterized in that tensioning cushion block (8) has interior stepped counterbore (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102018664A CN103321263A (en) | 2013-05-27 | 2013-05-27 | Anti-split fixing device for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102018664A CN103321263A (en) | 2013-05-27 | 2013-05-27 | Anti-split fixing device for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103321263A true CN103321263A (en) | 2013-09-25 |
Family
ID=49190286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102018664A Pending CN103321263A (en) | 2013-05-27 | 2013-05-27 | Anti-split fixing device for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103321263A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002405A1 (en) * | 1992-07-27 | 1994-02-03 | Gilmore Transportation Services, Inc. | Coupling for heavy-duty machine |
| CN201891139U (en) * | 2010-11-29 | 2011-07-06 | 广西玉柴重工有限公司 | T-shaped bush on bucket rod |
| 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 |
| CN202194923U (en) * | 2010-11-29 | 2012-04-18 | 广西玉柴重工有限公司 | Movable arm and bucket rod shaft seat connected anti-jag structure |
-
2013
- 2013-05-27 CN CN2013102018664A patent/CN103321263A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002405A1 (en) * | 1992-07-27 | 1994-02-03 | Gilmore Transportation Services, Inc. | Coupling for heavy-duty machine |
| CN201891139U (en) * | 2010-11-29 | 2011-07-06 | 广西玉柴重工有限公司 | T-shaped bush on bucket rod |
| CN202194923U (en) * | 2010-11-29 | 2012-04-18 | 广西玉柴重工有限公司 | Movable arm and bucket rod shaft seat connected anti-jag structure |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |