CN204199338U - Movable arm cylinder of excavator bearing pin fixed mechanism - Google Patents
Movable arm cylinder of excavator bearing pin fixed mechanism Download PDFInfo
- Publication number
- CN204199338U CN204199338U CN201420517104.5U CN201420517104U CN204199338U CN 204199338 U CN204199338 U CN 204199338U CN 201420517104 U CN201420517104 U CN 201420517104U CN 204199338 U CN204199338 U CN 204199338U
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- China
- Prior art keywords
- bearing pin
- boom cylinder
- cylinder bearing
- installing hole
- step trough
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- 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.)
- Expired - Fee Related
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- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of movable arm cylinder of excavator bearing pin fixed mechanism, comprise boom cylinder bearing pin spacing ring (1), block (2) and boom cylinder bearing pin and otic placode (3) is installed, boom cylinder bearing pin spacing ring is fixedly connected with one end of boom cylinder bearing pin (4), is provided with breach (11) above; Block side is provided with step trough structure (21), and longitudinal section, in " L " type structure, block is also provided with the installing hole (22) running through its short transverse; Boom cylinder bearing pin is installed near the boom cylinder bearing pin installing hole on otic placode and is provided with a threaded mounting hole (31), and breach is to the distance size sum of bottom land plane to center, installing hole hole of the distance size at boom cylinder bearing pin axle center and step trough structure and the distance dimensional fits at threaded mounting hole center to boom cylinder bearing pin installing hole center.This bearing pin fixed mechanism can realize only needing erection bolt can realize the restriction of axis to boom cylinder bearing pin and radial degree of freedom.
Description
technical field
The utility model relates to a kind of bearing pin fixed mechanism, and specifically a kind of movable arm cylinder of excavator bearing pin fixed mechanism, belongs to excavator technical field.
Background technology
The equipment of excavator generally comprises swing arm, dipper, scraper bowl, boom cylinder, bucket arm cylinder, bucket cylinder and linkage, connect each other by hinge between each mechanism, whole equipment is connected on revolving platform of excavator by hinge again.
Movable arm cylinder of excavator is generally that one end is connected to revolving platform of excavator by boom cylinder hinge, the other end is articulated and connected in swing arm, its Main Function supports swing arm, by the flexible lifting realizing swing arm of boom cylinder, boom cylinder bearing pin generally level is installed and is positioned at immediately below boom cylinder, when excavator works, boom cylinder bearing pin mainly bears radial load, load when namely working acts on boom cylinder bearing pin perpendicular to the axis of boom cylinder bearing pin, but due to revolving platform of excavator or the swing arm other reasons such as welding deformation or axiality in process, certain deviation can be there is in the mount pad of boom cylinder bearing pin with ideal position, there is certain deviation in the ideal position after namely causing boom cylinder bearing pin to install and immediately below boom cylinder, and then cause load during work to act on boom cylinder bearing pin non-perpendicular to boom cylinder bearing pin axis, boom cylinder bearing pin will be caused like this by the ball pivot of boom cylinder except being subject to radial direction and peripheral force, also can be subject to certain axial force.
Generally that the centring ring that external diameter is greater than pin diameter is set in one end of boom cylinder bearing pin in prior art, be fixedly connected with revolving dial mount pad the axial location realizing boom cylinder bearing pin through the installing hole on centring ring by erection bolt, this axial location mode needs on centring ring, at least arrange two installing holes, and correspondence position setting at least two threaded mounting holes of otic placode are installed at boom cylinder bearing pin, therefore process more complicated, and the Working position of each installing hole and threaded mounting hole is stricter, if there is deviation, just there will be bolt not install or bolt is firmly installed but there is the situations such as internal stress hidden danger.
Summary of the invention
For above-mentioned prior art Problems existing, the utility model provides a kind of movable arm cylinder of excavator bearing pin fixed mechanism, structure is simple, can realize only needing an erection bolt can limit the axis of boom cylinder bearing pin and radial degree of freedom, thus reduce difficulty of processing while guarantee installation quality.
To achieve these goals, this movable arm cylinder of excavator bearing pin fixed mechanism comprises boom cylinder bearing pin spacing ring, block and boom cylinder bearing pin installation otic placode;
Described boom cylinder bearing pin spacing ring is fixedly connected with one end of boom cylinder bearing pin, and boom cylinder bearing pin spacing ring is provided with breach;
Described block side is provided with step trough structure, and longitudinal section is in " L " type structure, and the height of step trough structure coordinates with the gauge of boom cylinder bearing pin spacing ring, and the bottom land plane of step trough structure coordinates with the breach plane on boom cylinder bearing pin spacing ring; Block is also provided with the installing hole running through its short transverse, installing hole and erection bolt dimensional fits;
Described boom cylinder bearing pin is installed near the boom cylinder bearing pin installing hole on otic placode and is provided with a threaded mounting hole, and breach is to the distance size sum of bottom land plane to center, installing hole hole of the distance size at boom cylinder bearing pin axle center and step trough structure and the distance dimensional fits at threaded mounting hole center to boom cylinder bearing pin installing hole center.
As further improvement of the utility model scheme, described breach and the bottom land plane of described step trough structure coordinated with it are all ramp structures.
As further improvement of the utility model scheme, the length of the bottom land plane of described step trough structure is at least 2/3 of breach chord length.
Compared with prior art, this movable arm cylinder of excavator bearing pin fixed mechanism arranges a threaded mounting hole owing to only installing on otic placode at boom cylinder bearing pin, therefore process simpler, and add and only need ensure the center, hole of threaded mounting hole this critical size of center, hole to boom cylinder bearing pin installing hole man-hour, the structure difficulty of processing comparatively arranging multiple threaded mounting hole reduces; Rotating in a circumferential direction of boom cylinder bearing pin is limited because the bottom land plane of the step trough structure by block coordinates with the breach plane on boom cylinder bearing pin spacing ring, " L " type structure of simultaneously being stretched out by step trough structure limits the axial float of boom cylinder bearing pin, realize only using an erection bolt just can limit the rotation of boom cylinder bearing pin and all degree of freedom of axial freedom and block, thus be completely fixed bearing pin, structure is simple, easy to assembly, economical and practical.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model boom cylinder bearing pin spacing ring;
Fig. 3 is the structural representation of the utility model block;
Fig. 4 is the structural representation that the utility model boom cylinder bearing pin installs otic placode;
Fig. 5 is the boom cylinder bearing pin spacing ring structural representation that the utility model adopts inclined-plane breach;
Fig. 6 is the stop block structure schematic diagram that the utility model adopts step trough structure grooves baseplane, inclined-plane.
In figure: 1, boom cylinder bearing pin spacing ring, 11, breach, 2, block, 21, step trough structure, 22, installing hole, 3, boom cylinder bearing pin installs otic placode, 31, threaded mounting hole, 4, boom cylinder bearing pin, 5, erection bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, this movable arm cylinder of excavator bearing pin fixed mechanism comprises boom cylinder bearing pin spacing ring 1, block 2 and boom cylinder bearing pin installation otic placode 3.
Described boom cylinder bearing pin spacing ring 1 is fixed together by groove welding with one end of boom cylinder bearing pin 4, and as shown in Figure 2, boom cylinder bearing pin spacing ring 1 is provided with breach 11, and breach 11 can direct numerical control blanking excision forming.
As shown in Figure 3, described block 2 side is provided with step trough structure 21, longitudinal section is in " L " type structure, and the height of step trough structure 21 coordinates with the gauge of boom cylinder bearing pin spacing ring 1, and the bottom land plane of step trough structure 21 coordinates with breach 11 plane on boom cylinder bearing pin spacing ring 1; Block 2 is also provided with the installing hole 22 running through its short transverse, installing hole 22 and erection bolt 5 dimensional fits.
As shown in Figure 4, described boom cylinder bearing pin is installed near the boom cylinder bearing pin installing hole on otic placode 3 and is provided with a threaded mounting hole 31, the distance size at breach 11 to boom cylinder bearing pin 4 axle center and the distance size sum of the bottom land plane of step trough structure 21 to center, installing hole 22 hole and the distance dimensional fits at threaded mounting hole 31 center to boom cylinder bearing pin installing hole center.
This movable arm cylinder of excavator bearing pin fixed mechanism when mounted, first the breach 11 being welded with the boom cylinder bearing pin 4 of boom cylinder bearing pin spacing ring 1 is installed otic placode 3 side and penetrated boom cylinder bearing pin installing hole towards threaded mounting hole 31, robot arm oil cylinder bearing pin and penetrate boom cylinder cylinder bottom end installation boom cylinder, to boom cylinder bearing pin spacing ring 1 bottom surface contact boom cylinder bearing pin, otic placode 3 is installed, then the step trough structure 21 of block 2 is snapped in breach 11, finally erection bolt 5 is penetrated in installing hole 22, screw in threaded mounting hole 31 and tighten.
In order to increase the intensity of step trough structure 21, prevent because the excessive step trough structure 21 that causes of boom cylinder bearing pin axial force is damaged, as further improvement of the utility model scheme, as shown in Figure 5, Figure 6, described breach 11 and the bottom land plane of described step trough structure 21 coordinated with it are all ramp structures, ramp structure adds the intensity of step trough structure 21 top flap, can prevent from causing step trough structure 21 top flap be out of shape or tear because boom cylinder bearing pin axial force is excessive.
For ensureing effective restraint of liberty degree further, as further improvement of the utility model scheme, the length of the bottom land plane of described step trough structure 21 is at least 2/3 of breach 11 chord length.
This movable arm cylinder of excavator bearing pin fixed mechanism arranges a threaded mounting hole 31 owing to only installing on otic placode 3 at boom cylinder bearing pin, therefore process simpler, and add and only need ensure the center, hole of threaded mounting hole 31 this critical size of center, hole to boom cylinder bearing pin installing hole man-hour, the structure difficulty of processing comparatively arranging multiple threaded mounting hole reduces; Rotating in a circumferential direction of boom cylinder bearing pin 4 is limited because the bottom land plane of the step trough structure 21 by block 2 coordinates with breach 11 plane on boom cylinder bearing pin spacing ring 1, " L " type structure of simultaneously being stretched out by step trough structure 21 limits the axial float of boom cylinder bearing pin 4, realize only using an erection bolt 5 just can limit the rotation of boom cylinder bearing pin 4 and all degree of freedom of axial freedom and block 2, thus be completely fixed bearing pin, structure is simple, easy to assembly, economical and practical.
Claims (3)
1. a movable arm cylinder of excavator bearing pin fixed mechanism, comprise boom cylinder bearing pin spacing ring (1), block (2) and boom cylinder bearing pin and otic placode (3) is installed, boom cylinder bearing pin spacing ring (1) is fixedly connected with one end of boom cylinder bearing pin (4), it is characterized in that
Described boom cylinder bearing pin spacing ring (1) is provided with breach (11);
Described block (2) side is provided with step trough structure (21), longitudinal section is in " L " type structure, the height of step trough structure (21) coordinates with the gauge of boom cylinder bearing pin spacing ring (1), and the bottom land plane of step trough structure (21) coordinates with the breach plane on boom cylinder bearing pin spacing ring (1); Block (2) is also provided with the installing hole (22) running through its short transverse, installing hole (22) and erection bolt (5) dimensional fits;
Described boom cylinder bearing pin is installed near the boom cylinder bearing pin installing hole on otic placode (3) and is provided with a threaded mounting hole (31), and breach (11) is to the distance size sum of bottom land plane to installing hole (22) center, hole of the distance size at boom cylinder bearing pin (4) axle center and step trough structure (21) and the distance dimensional fits at threaded mounting hole (31) center to boom cylinder bearing pin installing hole center.
2. movable arm cylinder of excavator bearing pin fixed mechanism according to claim 1, is characterized in that, described breach (11) and the bottom land plane of described step trough structure (21) coordinated with it are all ramp structures.
3. movable arm cylinder of excavator bearing pin fixed mechanism according to claim 1 and 2, is characterized in that, the length of the bottom land plane of described step trough structure (21) is at least 2/3 of breach (11) chord length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517104.5U CN204199338U (en) | 2014-09-10 | 2014-09-10 | Movable arm cylinder of excavator bearing pin fixed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517104.5U CN204199338U (en) | 2014-09-10 | 2014-09-10 | Movable arm cylinder of excavator bearing pin fixed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204199338U true CN204199338U (en) | 2015-03-11 |
Family
ID=52657313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517104.5U Expired - Fee Related CN204199338U (en) | 2014-09-10 | 2014-09-10 | Movable arm cylinder of excavator bearing pin fixed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204199338U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591217A (en) * | 2018-06-21 | 2018-09-28 | 中国五冶集团有限公司 | It is exclusively used in the pin shaft structure of connection steel construction and hydraulic lifting device |
| CN109944868A (en) * | 2019-04-04 | 2019-06-28 | 安徽省矿业机电装备有限责任公司 | A kind of Novel movable baffle |
| CN110593346A (en) * | 2019-09-20 | 2019-12-20 | 三一重机有限公司 | Digging machine |
| CN112664531A (en) * | 2020-12-31 | 2021-04-16 | 徐州徐工挖掘机械有限公司 | Welding-free pin shaft and stop device |
-
2014
- 2014-09-10 CN CN201420517104.5U patent/CN204199338U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591217A (en) * | 2018-06-21 | 2018-09-28 | 中国五冶集团有限公司 | It is exclusively used in the pin shaft structure of connection steel construction and hydraulic lifting device |
| CN109944868A (en) * | 2019-04-04 | 2019-06-28 | 安徽省矿业机电装备有限责任公司 | A kind of Novel movable baffle |
| CN110593346A (en) * | 2019-09-20 | 2019-12-20 | 三一重机有限公司 | Digging machine |
| CN112664531A (en) * | 2020-12-31 | 2021-04-16 | 徐州徐工挖掘机械有限公司 | Welding-free pin shaft and stop device |
| CN112664531B (en) * | 2020-12-31 | 2022-05-03 | 徐州徐工挖掘机械有限公司 | Welding-free pin shaft and stop device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180508 Address after: 221000 39 Gaoxin Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: XUZHOU XCMG MINING MACHINERY Co.,Ltd. Address before: 221005 39 Gaoxin Road, Xuzhou Economic Development Zone, Xuzhou, Jiangsu Patentee before: XCMG EXCAVATOR MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |