CN201771007U - Movable arm of hydraulic excavator - Google Patents
Movable arm of hydraulic excavator Download PDFInfo
- Publication number
- CN201771007U CN201771007U CN2010202814533U CN201020281453U CN201771007U CN 201771007 U CN201771007 U CN 201771007U CN 2010202814533 U CN2010202814533 U CN 2010202814533U CN 201020281453 U CN201020281453 U CN 201020281453U CN 201771007 U CN201771007 U CN 201771007U
- Authority
- CN
- China
- Prior art keywords
- movable arm
- arm body
- bending part
- swing arm
- cover plate
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a movable arm of a hydraulic excavator, which comprises a movable arm body formed by welding an upper cover plate (3), a lower cover plate (4) and two side plates (6); the cross section of the movable arm body has a square structure; the middle section of the movable arm body is provided with a bending part, from two ends to the bending part in the middle section of the movable arm body, the cross section increases gradually, and the bending part of the movable arm body is provided with a shaft sleeve (2); a shaft sleeve supporting plate (1) is arranged between the outer wall of the shaft sleeve (2) and the lower cover plate (4), and a plurality of rib plates are arranged between the upper cover plate (3) and the lower cover plate (4); and each rib plate is provided with a round hole. The movable arm has the advantages of simple structure, even stress, and the like, and is a more ideal movable arm used for the hydraulic excavator.
Description
Technical field
The utility model relates to a kind of Hydraulic Excavator's Boom.
Background technology
Hydraulic Excavator's Boom is to transmit the important component of motion and power, and it is stressed big and complicated, belongs to the consumable accessory of hydraulic crawler excavator; The combined member of the swing arm of existing excavator for being welded by steel plate, its cross section structure that is square, there is a bending part in the stage casing of swing arm, is provided with the solid gusset that is used to support in each section of swing arm cross-section.Because of the operating mode difference, the composite force difference that each position of swing arm is suffered, its inner gusset and the suffered maximum stress of bending part are also different; Because solid gusset can only reduce the stress of certain, and therefore the concentration phenomenon that can't eliminate stress very easily causes swing arm to damage.
Summary of the invention
At the deficiencies in the prior art part, the utility model aim to provide a kind of simple in structure, can prevent the Hydraulic Excavator's Boom that stress is concentrated.
In order to solve the problems of the technologies described above the technical solution adopted in the utility model: it comprises by upper cover plate, lower cover and two swing arm bodies that side plate is welded, the cross section of this swing arm body structure that is square; The stage casing of described swing arm body is provided with a bending part, changes from small to big gradually to its cross section of described bending part that is positioned at the stage casing in the two ends of slave arm body, is provided with axle sleeve at the bending part of swing arm body; Between the outer wall of axle sleeve and lower cover, be provided with the sleeve supporting plate, between upper cover plate and lower cover, be provided with some gussets; Have circular hole on each described gusset.
After adopting said structure, Hydraulic Excavator's Boom is located at circular hole on the gusset and can eliminates main force part and produce stress and concentrate in the course of the work, and each position is stressed more even; Therefore can prolong the application life of swing arm.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view Amplified image among Fig. 1;
Fig. 3 is the B-B cutaway view Amplified image among Fig. 1.
In the accompanying drawing: sleeve supporting plate 1 axle sleeve 2 upper cover plates 3 lower covers 4 circular holes 5 side plates 6
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Figure 3, the swing arm body is welded by upper cover plate 3, lower cover 4 and two blocks of side plates 6, the cross section of this swing arm body structure that is square; The stage casing of described swing arm body is provided with a bending part, changes from small to big gradually to its cross section of described bending part that is positioned at the stage casing in the two ends of slave arm body, is provided with axle sleeve 2 at the bending part of swing arm body.Be provided with sleeve supporting plate 1 between the outer wall of this axle sleeve and the lower cover 4, some gussets that are provided with between upper cover plate 3 and lower cover 4; Have circular hole on each described gusset.
The utility model has overcome each stress concentration point unbalance stress phenomenon, and whole stressing conditions is improved; Prolonged the application life of swing arm effectively.
Claims (1)
1. a Hydraulic Excavator's Boom comprises the swing arm body that is welded by upper cover plate (3), lower cover (4) and two blocks of side plates (6), the cross section of this swing arm body structure that is square; The stage casing of described swing arm body is provided with a bending part, changes from small to big gradually to its cross section of described bending part that is positioned at the stage casing in the two ends of slave arm body, is provided with axle sleeve (2) at the bending part of swing arm body; It is characterized in that: between the outer wall of axle sleeve (2) and lower cover (4), be provided with sleeve supporting plate (1), between upper cover plate (3) and lower cover (4), be provided with some gussets; Have circular hole on each described gusset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202814533U CN201771007U (en) | 2010-08-04 | 2010-08-04 | Movable arm of hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202814533U CN201771007U (en) | 2010-08-04 | 2010-08-04 | Movable arm of hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771007U true CN201771007U (en) | 2011-03-23 |
Family
ID=43750850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202814533U Expired - Fee Related CN201771007U (en) | 2010-08-04 | 2010-08-04 | Movable arm of hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103764918A (en) * | 2011-09-07 | 2014-04-30 | 卡特彼勒公司 | Apparatus and method for reinforcement of a load bearing structure |
-
2010
- 2010-08-04 CN CN2010202814533U patent/CN201771007U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103764918A (en) * | 2011-09-07 | 2014-04-30 | 卡特彼勒公司 | Apparatus and method for reinforcement of a load bearing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |