CN203296090U - Large arm and small arm structure of excavator - Google Patents
Large arm and small arm structure of excavator Download PDFInfo
- Publication number
- CN203296090U CN203296090U CN2013203902925U CN201320390292U CN203296090U CN 203296090 U CN203296090 U CN 203296090U CN 2013203902925 U CN2013203902925 U CN 2013203902925U CN 201320390292 U CN201320390292 U CN 201320390292U CN 203296090 U CN203296090 U CN 203296090U
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- large arm
- arm
- forearm
- excavator
- small
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Abstract
The utility model provides a large arm and small arm structure of an excavator. A large arm fork is arranged at one end of a large arm body, a small arm is connected to the large arm fork of a large arm, and the large arm and the small arm are of hollow structures and are respectively provided with a feed hole and a discharge hole with plugs. Excavating force outputted by the excavator is mainly maximized by the aid of the lever principle, excavating force points of the large arm and the small arm are closer to the center of the whole excavator by changing the sizes and the structures of the large arm and the small arm of the excavator, and the whole excavator is balanced and stable while the output force of the whole excavator is the largest. Therefore, the excavator is stable in operation by increasing the weights of the large arm, the small arm and the whole excavator. As the feed holes and the discharge holes are designed in the large arm and the small arm, loading, unloading and transporting are facilitated, the large arm and the small arm can be automatically filled according to the hardness of excavated rocks and soils, the weights of the large arm and the small arm can be reduced when the rocks and soils are soft, the weights of the large arm and the small arm can be increased when the rocks and soils are hard, and the working efficiency is effectively and reasonably maximized.
Description
Technical field
The utility model relates to engineering machinery, particularly relates to a kind of big arm of digger forearm structure.
Background technology
Excavator is a kind of of engineering machinery, be used for engineering field digging, the operations of loosening the soil such as building, water conservancy, electric power, road, mine, harbour and national defence, being widely used in harder lithosphere loosens the soil, because operating mode needs, the body of excavator is larger, and excavator comprises crawler-mounted excavator, wheel excavator etc., the working portion of excavator, mainly comprise scraper bowl, forearm and large arm, excavator also comprises driver's cabin, body frame and crawler belt etc.One end of small arm of digger connects scraper bowl, and large arm is also referred to as swing arm, and large arm connects forearm, is the important process position of excavator, and the structural strength at this position directly has influence on the service behaviour of excavator.
in actual applications, because the forearm end directly is connected with the workpiece scraper bowl, scraper bowl often runs into hard bulk sandstone in the process of shovel soil or shovel year sandstone, so the impact force that scraper bowl is subjected to is very large, if in construction site, meet lithosphere, operation there will be efficiency low to excavator for lithosphere, the difficult excavation, dig the situations such as motionless, for this technical barrier, the inventor carries out the special technique improvement to big arm of digger and forearm, make the large arm of excavator, forearm utilizes excavator soil, the operation of loosening the soil, increasing is to the harder soil layer of the lithosphere digging operating efficiency of loosening the soil.
The utility model content
Above-mentioned defect and problem for prior art, the purpose of the utility model embodiment is to provide rational in infrastructure, can adjust flexibly large arm, forearm weight according to the hardness of the rock earth of operative goals, thus the effective and reasonable maximized a kind of big arm of digger forearm structure of excavator operating efficiency of realizing.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of big arm of digger forearm structure, large arm main body one end are large arm fork, and forearm is connected to the large arm fork place of large arm, and described large arm and forearm are the hollow body structure, and large arm and forearm arrange respectively the feed inlet and outlet with plug.
Further technical scheme, the length of described large arm is 4.3 meters to 5.0 meters; The length of described forearm is 2.3 meters to 3.0 meters.
Preferred technical scheme, described large arm is connected by large arm, forearm chain female connector with the large arm fork of forearm at large arm.
Further technical scheme, select filler to fill in the space of described large arm, forearm hollow body.
Preferred technical scheme, described filler are that proportion is one of center of gravity ore more than 4.6 or proportion iron sand more than 5.9 or mixture both.
Further technical scheme, described large arm arranges the hydraulic connecting axle sleeve.
Further technical scheme, described forearm arranges 2 large arm hydraulic jack connecting bushings at least.
The lever principle of mainly using the utility model realizes that the digging force of equipment output maximizes, by big arm of digger, forearm size and structure are changed, the excavation force that makes large arm, forearm from the complete machine center more close to, reach complete machine and make assembled machine balance stable in the power output maximum.So add arm, forearm own wt and complete machine weight greatly, realize reaching stable in its work; By design input and output material hole on large arm, forearm, be convenient to the discharging charging, convenient transportation, can also fill large arm, forearm voluntarily according to the hardness of excavating rock earth, softer can alleviate large arm, forearm weight, the large arm of stronger increase, forearm weight, thus effective and reasonable its operating efficiency that makes maximizes.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the large arm of the utility model.
Fig. 2 is the structural representation of the utility model forearm.
Fig. 3 is the structural representation that the utility model embodiment is connected with excavator and scraper bowl.
The specific embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment that obtains, and all belong to the scope of the utility model protection.
Embodiment of the present utility model, according to Fig. 1, shown in Figure 2, a kind of big arm of digger forearm structure; forearm 2 arranges and dig hook connecting hole 21, arranges the axis hole 22 that is connected with large arm; the base holes 12 that large arm setting is connected with excavator, and the length of described large arm is 4.3 meters to 5.0 meters, and preferred length is 4.8 meters; the length of forearm is 2.3 meters to 3.0 meters, and preferred length is 2.8 meters.large arm main body one end is large arm fork 11, large arm and forearm 2 pass through large arm at the large arm fork of large arm, forearm chain female connector connects, large arm and forearm all select the steel plate of thickness of slab more than 30 to do agent structure, increase the force intensity that is subjected to of large arm and forearm, described forearm arranges hydraulic connecting and digs hook hydraulic controlled sleeve 23, be used for connecting and dig the hook hydraulic cylinder, described forearm arranges large arm hydraulic jack connecting bushing 24 and is used for being connected lift cylinder with the hydraulic connecting axle sleeve 13 of large arm, forearm arranges 2 large arm hydraulic jack connecting bushings 24 at least, the large arm hydraulic jack connecting bushing 24 that connects diverse location when large arm lift cylinder, can produce different pulling force, thereby realize synthesis energy saving and effectively utilize energy, described large arm and forearm are the hollow body structure, large arm and forearm arrange respectively the feed inlet and outlet 3 with plug, select filler to fill in the space of large arm, forearm hollow body, it is one of center of gravity ore more than 4.6 or proportion iron sand more than 5.9 or mixture both that filler can use proportion, in order to increase large arm, forearm overall weight.The utility model utilizes according to Newton's third law, active force and reaction force between two objects, always equal and opposite in direction, opposite direction, act on the same straight line, therefore add arm, forearm own wt and complete machine weight greatly, realize that excavator reaches stable at work.In the hollow body inner space of large arm and forearm, in the excavator transport process, can unload according to demand filler, overall weight while to reduce excavator, transporting, can also use targetedly filler capable of large arm, forearm filling according to the hardness of excavating rock earth simultaneously, softer can alleviate large arm, forearm weight, the large arm of stronger increase, forearm weight, thus effective and reasonable its operating efficiency that makes maximizes.
According to shown in Figure 3, the utility model is used in any other excavator of level and uses, embodiment selects the above excavator of 40T level to its large arm, forearm particular design, for the digging force that makes excavator reaches maximization, increased the output of power, so the digging machine oil cylinder of small arm, cylinder diameter 200 selected, piston rod 140, its hydraulic power output reaches 113T; Bucket cylinder is selected cylinder diameter 170, piston rod 120, and its hydraulic power output reaches 82T.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (6)
1. big arm of digger forearm structure is characterized in that: large arm main body one end is large arm fork, and forearm is connected to the large arm fork place of large arm, and described large arm and forearm are the hollow body structure, and arm and forearm arrange respectively the feed inlet and outlet with plug greatly.
2. a kind of big arm of digger forearm structure according to claim 1, it is characterized in that: the length of described large arm is 4.3 meters to 5.0 meters; The length of described forearm is 2.3 meters to 3.0 meters.
3. a kind of big arm of digger forearm structure according to claim 1 and 2 is characterized in that: described large arm is connected by large arm, forearm chain female connector with the large arm fork of forearm at large arm.
4. a kind of big arm of digger forearm structure according to claim 1 and 2, is characterized in that: select filler to fill in the space of described large arm, forearm hollow body.
5. a kind of big arm of digger forearm structure according to claim 1 and 2, it is characterized in that: described large arm arranges the hydraulic connecting axle sleeve.
6. a kind of big arm of digger forearm structure according to claim 1 and 2, it is characterized in that: described forearm arranges 2 large arm hydraulic jack connecting bushings at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203902925U CN203296090U (en) | 2013-07-03 | 2013-07-03 | Large arm and small arm structure of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203902925U CN203296090U (en) | 2013-07-03 | 2013-07-03 | Large arm and small arm structure of excavator |
Publications (1)
| Publication Number | Publication Date |
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| CN203296090U true CN203296090U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203902925U Expired - Lifetime CN203296090U (en) | 2013-07-03 | 2013-07-03 | Large arm and small arm structure of excavator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669452A (en) * | 2013-12-20 | 2014-03-26 | 成都凯隆机械维修有限公司 | Excavator big arm and small arm structure |
| CN107630482A (en) * | 2017-11-17 | 2018-01-26 | 成都凯隆机械维修有限公司 | Digging hook rock arm forearm with material filling mechanism |
| CN107740450A (en) * | 2017-11-30 | 2018-02-27 | 成都凯隆机械维修有限公司 | It is easy to the clip type forearm of adjustment work scope |
| CN107859079A (en) * | 2016-09-22 | 2018-03-30 | 日立建机株式会社 | Preceding apparatus for work and excavator |
| CN107882083A (en) * | 2017-11-17 | 2018-04-06 | 成都凯隆机械维修有限公司 | It is easy to the adjustable digging hook rock arm of night-time observation |
| CN115094966A (en) * | 2022-06-30 | 2022-09-23 | 徐州徐工挖掘机械有限公司 | Detachable bucket rod, excavator and using method |
-
2013
- 2013-07-03 CN CN2013203902925U patent/CN203296090U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669452A (en) * | 2013-12-20 | 2014-03-26 | 成都凯隆机械维修有限公司 | Excavator big arm and small arm structure |
| CN107859079A (en) * | 2016-09-22 | 2018-03-30 | 日立建机株式会社 | Preceding apparatus for work and excavator |
| CN107630482A (en) * | 2017-11-17 | 2018-01-26 | 成都凯隆机械维修有限公司 | Digging hook rock arm forearm with material filling mechanism |
| CN107882083A (en) * | 2017-11-17 | 2018-04-06 | 成都凯隆机械维修有限公司 | It is easy to the adjustable digging hook rock arm of night-time observation |
| CN107630482B (en) * | 2017-11-17 | 2022-03-15 | 成都凯隆机械维修有限公司 | Dig hook rock arm forearm with material filling mechanism |
| CN107882083B (en) * | 2017-11-17 | 2022-03-18 | 成都凯隆机械维修有限公司 | Dig hook rock arm with adjustable observe night |
| CN107740450A (en) * | 2017-11-30 | 2018-02-27 | 成都凯隆机械维修有限公司 | It is easy to the clip type forearm of adjustment work scope |
| CN107740450B (en) * | 2017-11-30 | 2023-11-03 | 成都凯隆机械维修有限公司 | Clamping piece type small arm convenient for adjusting working range |
| CN115094966A (en) * | 2022-06-30 | 2022-09-23 | 徐州徐工挖掘机械有限公司 | Detachable bucket rod, excavator and using method |
| CN115094966B (en) * | 2022-06-30 | 2024-04-16 | 徐州徐工挖掘机械有限公司 | Detachable bucket rod, excavator and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200824 Granted publication date: 20131120 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210224 Granted publication date: 20131120 |
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| PD01 | Discharge of preservation of patent | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |