CN102312898B - Anti-loose and protective structure for counterweight bolt of excavator - Google Patents
Anti-loose and protective structure for counterweight bolt of excavator Download PDFInfo
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- CN102312898B CN102312898B CN2011101586399A CN201110158639A CN102312898B CN 102312898 B CN102312898 B CN 102312898B CN 2011101586399 A CN2011101586399 A CN 2011101586399A CN 201110158639 A CN201110158639 A CN 201110158639A CN 102312898 B CN102312898 B CN 102312898B
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- bolt
- locking plate
- excavator
- locking
- head
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Abstract
The invention discloses an anti-loose and protective structure for a counterweight bolt of an excavator. The anti-loose and protective structure comprises a bolt and a faying face of the bolt and a workpiece, wherein the bolt comprises a head and a screw rod; the faying face is provided with a bolt hole. The anti-loose and protective structure also comprises a locking plate; the locking plate is of a shape of flakiness; the locking plate comprises a through hole, a positioning part and a limiting part; the diameter of the through hole is more than or equal to that of a cross section of the screw rod of the bolt but is less than that of an inscribed circle of the head of the bolt; the bolt passes through the through hole of the locking plate so as to fix the locking plate between the faying face and the head of the bolt; a positioning structure is arranged on the faying face; and the positioning structure is matched with the positioning part on the locking plate so as to limit the locking plate to rotate around the screw rod of the bolt. The anti-loose and protective structure provided by the invention has the beneficial effects that the loose prevention for the counterweight bolt of the excavator can be realized by virtue of simple manual operation, a protective structure is used for protecting the bolt head so as to prevent the bolt head from being impacted by an external force, and the operation is simple, easy, reliable and the anti-loose and protective structure has convenience in outdoor operation.
Description
Technical field
The present invention relates to the locking and safeguard structure of major works its upper side part bolt, the loosening and safeguard structure of especially a kind of counterweight bolt of excavator.
Background technique
Counterweight is one of vitals of excavator, generally by bolt counterweight and excavator vehicle body is fixed together.Because the excavator applying working condition is more abominable, the loosening even obscission of weight bolt often occurs, cause property even damage to person, so prevent that weight bolt from becoming flexible excavator is very important.Common counterweight bolt of excavator anti-loose structure has two kinds, and the first structure is to add locking glue in the screw thread connecting part of bolt and workpiece, and moment tights a bolt in accordance with regulations again, and is locking by locking glue.This kind method is better to small-sized screw retention effect, to the weight bolt of large-sized bolt especially excavator because the counterweight forced vibration of when work is larger, or when often being subjected to external force collision, use a period of time after, loosening phenomenon still can occur; The second structure is to use locking locking plate, and after the locking plate bending, the bending edges inboard is attached on the lower wing plate of platform longeron, manual locking again, this method during actual the use, also is subjected to the restriction of product structure because the bending edges of locking plate need be attached on the wing plate of longeron.More than two kinds of screw retention methods can only lockingly not have protective action to bolt, bolt head still can be subject to external force collision, and makes locking inefficacy.
Summary of the invention
For the problems referred to above of existing counterweight bolt of excavator anti-loose structure, the invention provides a kind of locking and safeguard structure of counterweight bolt of excavator, not only provide weight bolt locking, and provide protection to bolt head.
The technological scheme that technical solution problem of the present invention adopts is:
A kind of locking and safeguard structure of counterweight bolt of excavator, the junction plane that comprises bolt and bolt and workpiece, described bolt comprises head and screw rod, on the described junction plane screw is arranged, wherein, also comprise locking plate, described locking plate is sheet, described locking plate comprises through hole, positioning element and limit position part, described through-hole diameter is more than or equal to the screw rod cross-sectional diameter of described bolt, less than described bolt head inscribed circle diameter, the through hole that described bolt passes described locking plate is fixed between the head of described junction plane and described bolt described locking plate, on the described junction plane position structure is arranged, the described locking plate of positioning element engagement limits on described position structure and the described locking plate is rotation take the screw rod of described bolt as axle, and the limit position part of described locking plate limits described bolt head and rotates.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator, wherein, the positioning element on the described locking plate is pin, the position structure on the described junction plane is the positioning hole that mates with described pin.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator, wherein, the positioning element on the described locking plate is through hole, the position structure on the described junction plane is the bearing pin that mates with described through hole.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator, wherein, the positioning element on the described locking plate is stamping forming projection, the position structure on the described junction plane is the pit that mates with described projection.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator, wherein, described bolt head is cylinder, and described cylinder cross section is polygonal, and described limit position part is formed by following step:
Described locking plate some is stretched out the backward described bolt head direction bending of described bolt head and is formed bending edges, and described bending edges is close to a side of described bolt head cylinder.
Locking and the safeguard structure of the above counterweight bolt of excavator, wherein, described bolt head is cylinder, described cylinder cross section is regular hexagon, described locking plate is fan-shaped, and described positioning element is positioned at described fan-shaped small end place, and described limit position part is formed by following step:
Described fan-shaped circular arc part is stretched out the backward described bolt head direction bending of described bolt head and is formed bending edges, and described bending edges is close to a side of described bolt head cylinder.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator wherein, also comprises a packing ring, and described packing ring is ring-type, and described packing ring is fixed between described junction plane and the described locking plate.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator, wherein, described junction plane is provided with the protection structure, described protection structure division or all surround the side of described bolt head and be provided with for the operation described the above limit position part of locking plate the space.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator; wherein; described protection structure is semi-circular sheath; described semi-circular sheath surrounds described bolt head; described semi-circular sheath is provided with corresponding central angle more than or equal to the opening of 120 degree, and described opening is in the side of described bolt with respect to described limit position part.
Locking and the safeguard structure of above-mentioned counterweight bolt of excavator; wherein; described protection structure is the counterbore of the depression on the described junction plane; the described depression counterbore degree of depth is more than or equal to height and the described locking plate thickness sum of described bolt head, and described depression counterbore holds described locking plate and described bolt head.
The invention has the beneficial effects as follows: can realize that by simple manual operations counterweight bolt of excavator is locking, by protection structural defence bolt head, make bolt head not be subjected to external force collision, simple, easy row, reliable, be convenient to open-air open-air the operation.
Description of drawings
Fig. 1 is the assembling construction figure of the locking and safeguard structure of a kind of counterweight bolt of excavator of the present invention;
Fig. 2 is the worm's eye view of the locking and safeguard structure of a kind of counterweight bolt of excavator of the present invention;
Fig. 3 is the structural representation of locking plate of the locking and safeguard structure of a kind of counterweight bolt of excavator of the present invention;
Fig. 4 is the stereogram of the locking and safeguard structure of a kind of counterweight bolt of excavator of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as limiting to the invention.
Such as Fig. 1, shown in Figure 3, locking and the safeguard structure of counterweight bolt of excavator of the present invention comprises the junction plane 21 of bolt 1 and bolt 1 and workpiece 2, bolt 1 comprises head 11 and screw rod 12, on the junction plane 21 screw is arranged, wherein, also comprise locking plate 3, locking plate 3 is sheet, locking plate 3 comprises through hole 31, positioning element 32 and limit position part 33, through hole 31 diameters are more than or equal to screw rod 12 cross-sectional diameters of bolt 1, less than bolt head 11 inscribed circle diameters, the through hole 31 that bolt 1 passes locking plate 3 is fixed between the head 11 of junction plane 21 and bolt 1 locking plate 3, position structure 22 is arranged on the junction plane 21, the positioning element 32 engagement limits locking plates 3 on position structure 22 and the locking plate 3 take the screw rod 12 of bolt 1 for the axle rotation, limit position part 33 restriction bolt heads 11 rotations of locking plate 3.Screw rod 12 in positioning element 32 and the through hole 31 is fixed locking plate 3 can't be movable, and limit position part 33 restriction bolt heads 11 rotations on the locking plate 3 can not be deviate from bolt 1, thereby played the effect that prevents bolt looseness from the screw of junction plane 21.
Further, the positioning element 32 on the locking plate 3 can be pin, and the position structure 22 on the junction plane 21 is the positioning hole that mates with pin.Pin inserts the effect that positioning hole can play location locking plate 3, and pin and locking plate 3 can adopt riveted joint, this easy realization simple in structure.
Further, the positioning element 32 on the locking plate 3 can be through hole, and the position structure 22 on the junction plane 21 is the bearing pin that mates with through hole.Through hole is inserted in the effect that bearing pin can play location locking plate 3, owing to no longer include additional part on the locking plate 3, the processing of locking plate 3 is become simply, and cost is lower when changing locking plate 3.
Further, the positioning element 32 on the locking plate 3 is stamping forming projection, and the position structure 22 on the junction plane 21 is the pit that mates with projection.Projection embeds the effect that pit can play location locking plate 3, and this orientation type all becomes simply locking plate 3 and the processing of junction plane 21, makes cost.
Further, bolt head 11 is cylinder, and the cross section of cylinder is polygonal, and limit position part 33 is formed by following step:
Further, bolt head 11 is cylinder, and the cylinder cross section is regular hexagon, and locking plate 3 is fan-shaped, and positioning element 32 is positioned at fan-shaped small end place, and limit position part 33 is formed by following step:
Fan-shaped circular arc part is stretched out bolt head 11 backward bolt head 11 direction bendings and is formed bending edges, and described bending edges is close to a side of bolt head 11.The head cross section is that orthohexagonal bolt is universal standard part, is easy to obtain, the convenient replacement, and fan-shaped locking plate 3 makes things convenient for blanking, and limit position part 33 is in the circular arc place, an easier side that is adjacent to bolt head 11 when making operation limit position part 33.
Further, also comprise a packing ring 4, packing ring 4 is ring-type, and packing ring 4 is fixed between junction plane 21 and the locking plate 3.Packing ring 4 can cushion the pressure between bolt head 11 and the junction plane 21.
Further, such as Fig. 1, Fig. 2 and shown in Figure 4, junction plane 21 is provided with protection structure 5, and protection structure 5 is partly or entirely surrounded the side of bolt head 11 and is provided with the space that supplies operation locking plate 3 upper limit parts 33.Protection structure 5 can protect bolt head 11 not to be subjected to external force collision to cause anti-loose structure to lose efficacy.
Further, protection structure 5 is semi-circular sheath, and semi-circular sheath surrounds bolt head 11, and semi-circular sheath is provided with corresponding central angle more than or equal to the opening of 120 degree, and opening is in the side of bolt 1 with respect to limit position part 33.Semi-circular sheath opening makes operation limit position part 33 more convenient at bolt 1 with respect to a side of limit position part 32.
Further, protection structure 5 is the depression counterbore on the junction plane 21, and the depression counterbore degree of depth is more than or equal to height and the locking plate 3 thickness sums of bolt head 11, and the depression counterbore holds locking plate 3 and bolt head 11.Adopt the depression counterbore to make on the junction plane 21 without projection as protection structure 5, thereby make protection more comprehensively, and easier than forming the protection structure 5 of protruding during processing junction plane 21.
The above is only for preferred embodiment of the present invention, is not so limits claim of the present invention, so the equivalent structure that all utilizations specification of the present invention and diagramatic content have been done changes, all is included in protection scope of the present invention.
Claims (8)
1. the locking and safeguard structure of a counterweight bolt of excavator, the junction plane that comprises bolt and bolt and workpiece, described bolt comprises head and screw rod, on the described junction plane screw is arranged, it is characterized in that, also comprise locking plate, described locking plate is sheet, described locking plate comprises through hole, positioning element and limit position part, described through-hole diameter is more than or equal to the screw rod cross-sectional diameter of described bolt, less than described bolt head inscribed circle diameter, the through hole that described bolt passes described locking plate is fixed between the head of described junction plane and described bolt described locking plate, on the described junction plane position structure is arranged, the described locking plate of positioning element engagement limits on described position structure and the described locking plate is rotation take the screw rod of described bolt as axle, and the limit position part of described locking plate limits described bolt head and rotates;
Described bolt head is cylinder, and described cylinder cross section is regular hexagon, and described locking plate is fan-shaped, and described positioning element is positioned at described fan-shaped small end place, and described limit position part is formed by following step:
Described fan-shaped circular arc part is stretched out the backward described bolt head direction bending of described bolt head and is formed bending edges, and described bending edges is close to a side of described bolt head cylinder.
2. the locking and safeguard structure of counterweight bolt of excavator as claimed in claim 1 is characterized in that the positioning element on the described locking plate is pin, and the position structure on the described junction plane is the positioning hole with described pin coupling.
3. the locking and safeguard structure of counterweight bolt of excavator as claimed in claim 1 is characterized in that the positioning element on the described locking plate is through hole, and the position structure on the described junction plane is the bearing pin with described through hole coupling.
4. the locking and safeguard structure of counterweight bolt of excavator as claimed in claim 1 is characterized in that the positioning element on the described locking plate is stamping forming projection, and the position structure on the described junction plane is and the pit of described projection coupling.
5. such as the locking and safeguard structure of counterweight bolt of excavator as described in arbitrary among the claim 1-4, it is characterized in that also comprise a packing ring, described packing ring is ring-type, described packing ring is fixed between described junction plane and the described locking plate.
6. such as the locking and safeguard structure of counterweight bolt of excavator as described in arbitrary among the claim 1-4; it is characterized in that; described junction plane is provided with the protection structure, described protection structure division or all surround the side of described bolt head and be provided with for the operation described the above limit position part of locking plate the space.
7. the locking and safeguard structure of counterweight bolt of excavator as claimed in claim 6; it is characterized in that; described protection structure is semi-circular sheath; described semi-circular sheath surrounds described bolt head; described semi-circular sheath is provided with corresponding central angle more than or equal to the opening of 120 degree, and described opening is in the side of described bolt with respect to described limit position part.
8. the locking and safeguard structure of counterweight bolt of excavator as claimed in claim 6; it is characterized in that; described protection structure is the counterbore of the depression on the described junction plane; the described depression counterbore degree of depth is more than or equal to height and the described locking plate thickness sum of described bolt head, and described depression counterbore holds described locking plate and described bolt head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101586399A CN102312898B (en) | 2011-06-14 | 2011-06-14 | Anti-loose and protective structure for counterweight bolt of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101586399A CN102312898B (en) | 2011-06-14 | 2011-06-14 | Anti-loose and protective structure for counterweight bolt of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102312898A CN102312898A (en) | 2012-01-11 |
| CN102312898B true CN102312898B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101586399A Expired - Fee Related CN102312898B (en) | 2011-06-14 | 2011-06-14 | Anti-loose and protective structure for counterweight bolt of excavator |
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| Country | Link |
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| CN (1) | CN102312898B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498856B (en) * | 2013-09-10 | 2015-08-05 | 北京航空航天大学 | A kind of high speed rotor surface bolt fastener damping device |
| CN108643273B (en) * | 2018-07-09 | 2023-11-28 | 三一重机有限公司 | Locating pin, counterweight locating structure, assembly method and excavator |
| CN109356929A (en) * | 2018-12-13 | 2019-02-19 | 哈尔滨电气动力装备有限公司 | The locking plate locking for Allen bolt in counterbore |
| CN114809168B (en) * | 2022-05-27 | 2024-09-24 | 徐州徐工挖掘机械有限公司 | Cab anti-rolling installation mechanism and excavator |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2118421A1 (en) * | 1971-04-16 | 1972-10-26 | Daimler Benz Ag, 7000 Stuttgart | Device for securing screw connections |
| JP3108635B2 (en) * | 1996-09-27 | 2000-11-13 | 株式会社佐賀鉄工所 | Bolt plate fixing structure |
| JPH10299748A (en) * | 1997-04-30 | 1998-11-10 | Mitsubishi Heavy Ind Ltd | Bolt |
| JPH1144313A (en) * | 1997-07-29 | 1999-02-16 | Somic Ishikawa:Kk | Rotation stopping member for fastening member and clamp device |
| JP2000201594A (en) * | 1999-01-11 | 2000-07-25 | Shimano Inc | Whirl-stopper for fishing reel fastening member |
| GB2351134B (en) * | 1999-06-18 | 2002-09-04 | Business Lines Ltd | Wheel nut locking assembly |
| US6471457B2 (en) * | 2001-02-23 | 2002-10-29 | Shimano, Inc. | Screw retention device having a hook |
| CN2738021Y (en) * | 2004-10-11 | 2005-11-02 | 任兴堂 | Mutually stop check washer |
| CN2799956Y (en) * | 2004-10-11 | 2006-07-26 | 任兴堂 | Anti-loosening stop washer |
| DE102005051349B4 (en) * | 2005-10-25 | 2008-08-28 | Rolf Prillwitz | Anti-rotation device for a screw connection |
| CN201763887U (en) * | 2010-08-24 | 2011-03-16 | 北京市三一重机有限公司 | Rotary drilling rig and counterweight device thereof |
| CN101963183B (en) * | 2010-09-21 | 2013-02-27 | 三一重机有限公司 | Looseness-proof fastening structure of counterweight bolts of large excavator and fastening method thereof |
-
2011
- 2011-06-14 CN CN2011101586399A patent/CN102312898B/en not_active Expired - Fee Related
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| CN102312898A (en) | 2012-01-11 |
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