CN104975625A - Small excavator with double support arms - Google Patents
Small excavator with double support arms Download PDFInfo
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- CN104975625A CN104975625A CN201510366074.1A CN201510366074A CN104975625A CN 104975625 A CN104975625 A CN 104975625A CN 201510366074 A CN201510366074 A CN 201510366074A CN 104975625 A CN104975625 A CN 104975625A
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- dipper
- scraper bowl
- support arm
- support
- bucket
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Abstract
The invention discloses a small excavator with double support arms, which comprises a bucket rod, two hinged seats, two support arm oil cylinders and a bucket, wherein the bucket rod is arranged between a moving arm and the bucket, and comprises a first bucket rod and a second bucket rod which are hinged with each other from the head to the tail, the front part of the second bucket rod is divided into two support arms which are equal in length, the front ends of the two support arms are pin-jointed with the bucket, the two hinged seats are respectively arranged on pin-jointed positions of the front ends of the two support arms and the bucket, the two support arm oil cylinders are respectively arranged on the outer sides of the two support arms, the bucket comprises a bucket main body, a bucket seat and a bucket tooth, the bucket seat is pin-jointed with the front ends of the two support arms, the bucket tooth is of an isosceles triangle, and sawteeth are uniformly distributed on the two equal sides of the isosceles triangle. The small excavator with the double support arms is reasonable in design, improves excavating strength, stabilizes excavating operation performance, can not cause mechanical injury to the bucket rod during the excavating operation, and prolongs service life.
Description
Technical field
The invention belongs to excavator technical field, particularly a kind of mini-excavator with two support arm.
Background technology
Existing power shovel is driven by dipper and carries out digging operation, dipper is be provided with the steel work connecting rod driving oil cylinder, the scraper bowl seat of itself and scraper bowl carries out pivot joint, and be connected with oil cylinder one end by bogie, play and drive scraper bowl with dipper one end for rotation excavation is carried out in the center of circle, in the process, because motive power powerful when excavator is constructed impacts bucket tooth, scraper bowl seat and dipper, the pressure that scraper bowl excavates concentrates the articulated section acting on scraper bowl and dipper, the bearing pin be articulated between scraper bowl and dipper becomes the conduction maincenter of powerful active force, during momentary action, bearing pin is the main supporting body of strength, and bearing pin is through processing, need bearing pin to be arranged jump ring to limit its job position, therefore thinner in the middle part of bearing pin, largely reducing the overall impact resistance of bearing pin, just the point that it is the weakest is become in the middle part of such bearing pin, though prior art improves bearing pin impact resistance, extend certain application life, but be easy to fracture, and there is the situations such as not easily replacing after fracture,
Excavator is when carrying out digging operation in addition, if the material in scraper bowl be hard material as bulk solid rock time, when receiving bucket, this material may be encountered the front end of dipper and cause the damage of dipper.Damage to prevent dipper from collided by material, at present at dipper front end lower cover welding anticollision device, this anticollision device comprises backing plate and on backing plate, is welded with anti-collision bar, and the length direction of backing plate and anti-collision bar is consistent with the length direction of dipper.But there is following shortcoming in this structure, namely when dipper work is stressed, dipper can occur bending and deformation at middle bearing hinge place, backing plate herein and anti-collision bar also can follow flexural deformation, backing plate will carry out the rigid curved that flexural deformation first must overcome anti-collision bar, so when the rigidity of anti-collision bar improves, backing plate also will correspondingly improve its rigidity; The raising of backing plate rigidity will inevitably cause the thickness of backing plate to increase, and so just can prevent the cracking of backing plate and corresponding weld seam thereof.So the shortcoming of this anticollision device is: the rigid requirements of backing plate is high, thickness of slab cost is high; Tearing and the cracking of peripheral weld of backing plate also can be caused if design value is improper.
Summary of the invention
For above-mentioned technical problem, an object of the present invention is, a kind of mini-excavator with two support arm is provided, original single dipper is designed to support arm and the scraper bowl pivot joint with Liang Ge branch, the application point that scraper bowl is acted between scraper bowl and dipper in digging operation becomes two by original one, in use the strong point of scraper bowl active force increases also provides powerful support force to scraper bowl operation, improves the job stabilization of scraper bowl, accelerates job scheduling; Further, during mini-excavator operation with two support arm provided by the invention, when scraper bowl is packed up to dipper direction, even if it is also drop in space between the support arm of Liang Ge branch that the material in scraper bowl drops, dipper of can not damaging;
Two of object of the present invention is, a kind of scraper bowl with isosceles triangle bucket tooth is provided, change bucket tooth in original excavator and be all in the design of same level line, original bucket tooth is all stressed from excacation, greatly stressed, large to the active force of dipper and bearing pin, be easy to damage dipper and bearing pin, scraper bowl with isosceles triangle bucket tooth provided by the invention is when digging operation, first the corner position being isosceles triangle is first stressed, afterwards along with going deep into of excavating, bucket tooth is stressed to be strengthened gradually, it is also the process simultaneously strengthened gradually to the active force of dipper, make the uniform force of dipper, long service life.
To achieve these goals with some other objects, technical scheme provided by the invention is:
With a mini-excavator for two support arm, it is characterized in that, comprising:
Dipper, it is arranged between swing arm and scraper bowl, and described dipper comprises the first dipper of being hinged of head and the tail and the second dipper, described first dipper rear end and swing arm hinged, the front portion of described second dipper is branched off into the equal support arm of two length, and the front end of two support arms and scraper bowl pivot joint; Two hinged seats, it is separately positioned on two supporting arm front ends and scraper bowl articulated section; Two support arm oil cylinders, it is separately positioned on the outside of two support arms, and one end of two support arm oil cylinders is separately fixed at the both sides of the rear end of the first dipper, and the other end of two support arm oil cylinders is separately fixed on two hinged seats;
Scraper bowl, it comprises scraper bowl main body, scraper bowl seat and bucket tooth, the front end pivot joint of described scraper bowl seat and described two support arms; Described bucket tooth is isosceles triangle, and two waists of isosceles triangle are evenly distributed with sawtooth, and the base length of described isosceles triangle and scraper bowl body front end edge isometric.
Preferably, wherein, the length ratio of described first dipper and described second dipper is 5-3: 2-1.
Preferably, wherein, the length ratio of described first dipper and described second dipper is 3: 2.
Preferably, wherein, described two support arms account for 2/3 of the total length of the second dipper.
Preferably, wherein, the ultimate range between described two support arms is less than the total length of the second dipper.
Preferably, wherein, the corner angle a of the isosceles triangle of described bucket tooth is 120 ° of < a < 170 °.
Preferably, wherein, described scraper bowl main body is form groove by an arcwall face and the plane being arranged on arcwall face both sides, and the maximum length of described plane is less than 2/3 of the total length of described first dipper.
Preferably, wherein, described hinged seat also comprise at least two leg-of-mutton point of bearings and be arranged on mutually against the bearing pin of point holder top.
Preferably, wherein, described point of bearing comprises: the first support bar and the second support bar, the front end pivot joint of any one support arm in one end of described first support bar and described two support arms, the other end of described first support bar and one end pivot joint of described second support bar, the other end of described second support bar and the pivot joint of described scraper bowl seat, the other end of the first support bar and the articulated section, one end of described second support bar are provided with bearing pin.
The invention has the beneficial effects as follows:
At the mini-excavator with two support arm provided by the invention, original single dipper is designed to support arm and the scraper bowl pivot joint with Liang Ge branch, the application point that scraper bowl is acted between scraper bowl and dipper in digging operation becomes two by original one, in use the strong point of scraper bowl active force increases also provides powerful support force to scraper bowl operation, improve the job stabilization of scraper bowl, accelerate job scheduling;
During mini-excavator operation with two support arm provided by the invention, when scraper bowl is packed up to dipper direction, even if it is also drop in space between the support arm of Liang Ge branch that the material in scraper bowl drops, dipper of can not damaging;
A kind of scraper bowl with isosceles triangle bucket tooth provided by the invention, change bucket tooth in original excavator in the program and be all in the design of same level line, original bucket tooth is all stressed from excacation, greatly stressed, large to the active force of dipper and bearing pin, be easy to damage dipper and bearing pin, scraper bowl with isosceles triangle bucket tooth provided by the invention is when digging operation, first the corner position being isosceles triangle is first stressed, afterwards along with going deep into of excavating, bucket tooth is stressed to be strengthened gradually, it is also the process simultaneously strengthened gradually to the active force of dipper, make the uniform force of dipper, long service life,
In sum, the present invention is reasonable in design, improves the excavation dynamics of excavator, and stable digging operation performance, in digging operation, mechanical wounding can not be caused to dipper and dipper stressed evenly, extend its application life.
Accompanying drawing explanation
Fig. 1 is the side-looking structural representation of a kind of embodiment of a kind of mini-excavator with two support arm of the present invention;
Fig. 2 be in a kind of embodiment of a kind of mini-excavator with two support arm of the present invention dipper face structural representation;
Fig. 3 be in the another embodiment of a kind of mini-excavator with two support arm of the present invention dipper face structural representation;
Fig. 4 be in a kind of embodiment of a kind of mini-excavator with two support arm of the present invention bucket tooth face structural representation.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, can implement according to this with reference to manual word to make those skilled in the art.
The embodiment of technical scheme provided by the invention is:
As depicted in figs. 1 and 2,
In one embodiment, a kind of mini-excavator with two support arm, it is characterized in that, comprise: dipper, it is arranged between swing arm and scraper bowl, and described dipper comprises the first dipper 1 and the second dipper 2 of being hinged of head and the tail, described first dipper rear end and swing arm hinged, the front portion of described second dipper is branched off into the equal support arm 8 of two length, and the front end of two support arms and scraper bowl pivot joint; Two hinged seats 4, it is separately positioned on two supporting arm front ends and scraper bowl articulated section; Two support arm oil cylinders 3, it is separately positioned on the outside of two support arms, and one end of two support arm oil cylinders is separately fixed at the both sides of the rear end of the first dipper, and the other end of two support arm oil cylinders is separately fixed on two hinged seats; As shown in Figure 4, scraper bowl, it comprises scraper bowl main body 7, scraper bowl seat 5 and bucket tooth 6, the front end pivot joint of described scraper bowl seat and described two support arms; Described bucket tooth is isosceles triangle, and two waists of isosceles triangle are evenly distributed with sawtooth, and the base length of described isosceles triangle and scraper bowl body front end edge isometric.In such scheme, with dipper and the scraper bowl pivot joint of two support arm, the application point that scraper bowl is acted between scraper bowl and dipper in digging operation becomes two points by original one, in use the strong point of scraper bowl active force increases also provides powerful support force to scraper bowl operation, improve the job stabilization of scraper bowl, accelerate job scheduling, wherein, as shown in Figures 2 and 3, support arm is set to straight shape or arc, in this two schemes, the active force that straight shape support arm bears than arc support arm is larger, and arc support arm provides larger space to bucket tooth than straight shape support arm, and leave certain space between the support arm due to Liang Ge branch, when scraper bowl is in digging operation process, when packing up to dipper direction, even if it is also drop in space between the support arm of Liang Ge branch that the material in scraper bowl drops, can not to damage dipper, to improve the security performance of dipper, the bucket tooth of isosceles triangle, when digging operation, is first that the corner position of isosceles triangle is first stressed, afterwards along with going deep into of excavating, bucket tooth is stressed to be strengthened gradually, the process strengthened gradually the while of to the active force of dipper being also, makes the uniform force of dipper, long service life.
In one embodiment, the length ratio of described first dipper and described second dipper is 5-3: 2-1.In the above-described embodiment, define the better suited length ratio of ratio of the first dipper and the second dipper, make the first dipper in digging operation process, enough working spaces can be provided to the second dipper and scraper bowl.
In one embodiment, the length ratio of described first dipper and described second dipper is 3: 2.In the above-described embodiment, define the better suited length ratio of ratio of the first dipper and the second dipper, make the first dipper in digging operation process, enough working spaces can be provided to the second dipper and scraper bowl.
In one embodiment, described two support arms account for 2/3 of the total length of the second dipper.In the above-described embodiment, define the length of two support arms, make the more reasonable structure of the second dipper, uniform force.
In one embodiment, the ultimate range between described two support arms is less than the total length of the second dipper.In the above-described embodiment, define the length of two support arms, make the more reasonable structure of the second dipper, uniform force.
In one embodiment, the corner angle a of the isosceles triangle of described bucket tooth is 120 ° of < a < 170 °.In the above-described embodiment, the drift angle defining the isosceles triangle of bucket tooth is the concrete angle value at obtuse angle, object is the shape limiting bucket tooth more accurately, to be convenient to produce the gardens excavator used in applicable actual production, can not damage because of the root to flowers, plants and trees too sharp-pointed in the middle part of bucket tooth, and be easy to pack up scraper bowl, mechanical damage can not be caused to dipper.
In one embodiment, described scraper bowl main body is form groove by an arcwall face and the plane being arranged on arcwall face both sides, and the maximum length of described plane is less than 2/3 of the total length of described first dipper.In the above-described embodiment, define the length of scraper bowl, make it in the process of packing up, the jut in the middle part of guarantee bucket tooth inserts the space between two support arms.
In one embodiment, described hinged seat also comprise at least two leg-of-mutton point of bearings and be arranged on mutually against the bearing pin of point holder top.
In one embodiment, described point of bearing comprises: the first support bar and the second support bar, the front end pivot joint of any one support arm in one end of described first support bar and described two support arms, the other end of described first support bar and one end pivot joint of described second support bar, the other end of described second support bar and the pivot joint of described scraper bowl seat, the other end of the first support bar and the articulated section, one end of described second support bar are provided with bearing pin.In the above-described embodiment, a kind of hinged seat be made up of two constitutionally stable leg-of-mutton point of bearings is provided, to the sufficiently stable strong point of oil cylinder, ensures that oil cylinder carries out in the process of digging operation at driving dipper and scraper bowl, can the carrying out of steady ordered, increase work efficiency.
Although embodiment of the present invention are open as above, but it is not restricted to listed in manual and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the embodiment of synchronization.
Claims (9)
1. with a mini-excavator for two support arm, it is characterized in that, comprising:
Dipper, it is arranged between swing arm and scraper bowl, and described dipper comprises the first dipper of being hinged of head and the tail and the second dipper, described first dipper rear end and swing arm hinged, the front portion of described second dipper is branched off into the equal support arm of two length, and the front end of two support arms and scraper bowl pivot joint; Two hinged seats, it is separately positioned on two supporting arm front ends and scraper bowl articulated section; Two support arm oil cylinders, it is separately positioned on the outside of two support arms, and one end of two support arm oil cylinders is separately fixed at the both sides of the rear end of the first dipper, and the other end of two support arm oil cylinders is separately fixed on two hinged seats;
Scraper bowl, it comprises scraper bowl main body, scraper bowl seat and bucket tooth, the front end pivot joint of described scraper bowl seat and described two support arms; Described bucket tooth is isosceles triangle, and two waists of isosceles triangle are evenly distributed with sawtooth, and the base length of described isosceles triangle and scraper bowl body front end edge isometric.
2., as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, the length ratio of described first dipper and described second dipper is 5-3: 2-1.
3., as claimed in claim 2 with the mini-excavator of two support arm, it is characterized in that, the length ratio of described first dipper and described second dipper is 3: 2.
4., as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, described two support arms account for 2/3 of the total length of the second dipper.
5., as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, the ultimate range between described two support arms is less than the total length of the second dipper.
6., as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, the corner angle a of the isosceles triangle of described bucket tooth is 120 ° of < a < 170 °.
7. as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, described scraper bowl main body is form groove by an arcwall face and the plane being arranged on arcwall face both sides, and the maximum length of described plane is less than 2/3 of the total length of described first dipper.
8., as claimed in claim 1 with the mini-excavator of two support arm, it is characterized in that, described hinged seat also comprise at least two leg-of-mutton point of bearings and be arranged on mutually against the bearing pin of point holder top.
9. as claimed in claim 8 with the mini-excavator of two support arm, it is characterized in that, described point of bearing comprises: the first support bar and the second support bar, the front end pivot joint of any one support arm in one end of described first support bar and described two support arms, the other end of described first support bar and one end pivot joint of described second support bar, the other end of described second support bar and the pivot joint of described scraper bowl seat, the other end of the first support bar and the articulated section, one end of described second support bar are provided with bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366074.1A CN104975625A (en) | 2015-06-26 | 2015-06-26 | Small excavator with double support arms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366074.1A CN104975625A (en) | 2015-06-26 | 2015-06-26 | Small excavator with double support arms |
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| Publication Number | Publication Date |
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| CN104975625A true CN104975625A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510366074.1A Pending CN104975625A (en) | 2015-06-26 | 2015-06-26 | Small excavator with double support arms |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476641A (en) * | 1981-04-06 | 1984-10-16 | Ballinger Paul V | Strata rock bucket |
| JP2003184122A (en) * | 2001-12-13 | 2003-07-03 | Komatsu Ltd | Loading vehicle |
| CN1831253A (en) * | 2005-03-08 | 2006-09-13 | 姚实现 | Working device setted on one place and engineering machinery using it |
| CN2900629Y (en) * | 2006-02-27 | 2007-05-16 | 中国人民解放军63983部队 | Digging device |
| CN201785784U (en) * | 2010-08-19 | 2011-04-06 | 长沙中联重工科技发展股份有限公司上海分公司 | Three-hinge-point connecting rod mechanism of excavator |
| EP2341189A2 (en) * | 2009-12-31 | 2011-07-06 | AGCO GmbH | Loader adapter for a works vehicle |
| CN102839696A (en) * | 2012-09-28 | 2012-12-26 | 中国人民解放军63983部队 | Excavating device of excavator |
-
2015
- 2015-06-26 CN CN201510366074.1A patent/CN104975625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476641A (en) * | 1981-04-06 | 1984-10-16 | Ballinger Paul V | Strata rock bucket |
| JP2003184122A (en) * | 2001-12-13 | 2003-07-03 | Komatsu Ltd | Loading vehicle |
| CN1831253A (en) * | 2005-03-08 | 2006-09-13 | 姚实现 | Working device setted on one place and engineering machinery using it |
| CN2900629Y (en) * | 2006-02-27 | 2007-05-16 | 中国人民解放军63983部队 | Digging device |
| EP2341189A2 (en) * | 2009-12-31 | 2011-07-06 | AGCO GmbH | Loader adapter for a works vehicle |
| CN201785784U (en) * | 2010-08-19 | 2011-04-06 | 长沙中联重工科技发展股份有限公司上海分公司 | Three-hinge-point connecting rod mechanism of excavator |
| CN102839696A (en) * | 2012-09-28 | 2012-12-26 | 中国人民解放军63983部队 | Excavating device of excavator |
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Application publication date: 20151014 |
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| RJ01 | Rejection of invention patent application after publication |