CN107938736A - The work arm support and excavator of excavator - Google Patents
The work arm support and excavator of excavator Download PDFInfo
- Publication number
- CN107938736A CN107938736A CN201711167703.3A CN201711167703A CN107938736A CN 107938736 A CN107938736 A CN 107938736A CN 201711167703 A CN201711167703 A CN 201711167703A CN 107938736 A CN107938736 A CN 107938736A
- Authority
- CN
- China
- Prior art keywords
- arm support
- excavator
- lower arm
- dipper
- work
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/52—Cableway excavators
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
Abstract
This disclosure relates to mechanical face shovel excavator technical field, mechanical face shovel excavator is a kind of special equipment for glory-hole exploitation, more particularly to the work arm support and excavator of a kind of excavator, the work arm support includes lower arm support, supporting rod, upper arm support and top pulleys：Arm support lower end is wherein descended to be articulated with workbench, lower arm support upper end is hinged with supporting rod one end, the supporting rod other end is articulated with the top of A type frame, and lower arm support, supporting rod and A type frame supporting structure triangular in shape, the lower end of upper arm support is articulated with the upper end of lower arm support, upper arm support upper end sets top pulleys, and by guy wire with being connected at the top of A type frame, dipper and pressing device are arranged on lower arm support for upper arm support upper end.Said structure optimizes the force structure of work arm support, reduces the moment of flexure that is subject to of the lower arm support during dipper pushing, improves the working performance of complete machine；The arm support for adding strut is avoided work arm support jack-up when scraper bowl gnaws foundation to the hurtful possibility of machine.
Description
Technical field
This disclosure relates to excavator technical field, and in particular to the work arm support and excavator of a kind of excavator.
Background technology
The mechanical face shovel excavator of correlation technique, also referred to as mine excavator, are a kind of to be used for opencast mining
Special equipment, the operating mechanism of excavator mainly include A type frame, crane arm, dipper, scraper bowl, pressing device, lifting device, stretch tight
Rope and traction rope etc..Scraper bowl is completed to material under the lifting force of steel wire rope and the thrust collective effect of pushing gear during operation
Digging, the scraper bowl for filling material turn round certain angle, scraper bowl together with the top of whole machine under the action of slewing equipment
During positioned at the top of haulage vehicle, scraper bowl bottom opens and unloads material, and then the top of whole machine is gone back to again comes, and dipper is received
Return, boom hoist cable decentralization, is ready for the operation of next circulation.
Such a excavator is in operation process, and when scraper bowl excavates the material of material heap front end bottommost, lifting force is smaller, pushes away
Press mechanism releases dipper with all strength, and crane arm can be jacked up by pushing counter-force, crane arm is rotated around fitting well, guy wire loosens (actual work
Such case is referred to as " gnawing foundation " in work), at this moment if crane arm inertia is transferred, great impact will be produced to guy wire, so that
Shorten the service life of guy wire and associated part.Additionally due to overall crane arm weight is big, corresponding machine counterweight is also big, both cause whole
The weight increase of machine, adds the idle work of machine, and then influences machine performance.
Crane arm is the important component of mine excavator operating mechanism, structure, working strength and the correlation of crane arm
The service life of part directly affects the production efficiency and reliability of equipment.Therefore, it is necessary to a kind of crane arm and excavator are studied, and then
The performance and work efficiency of excavator are improved, to improve the running quality of integral device.
It should be noted that information is only used for strengthening the reason to the background of the disclosure disclosed in above-mentioned background section
Solution, therefore can include not forming the information to the prior art known to persons of ordinary skill in the art.
The content of the invention
The purpose of the disclosure is the work arm support and excavator for providing a kind of excavator, and then at least to a certain extent
Overcome one or more problem caused by the limitation of correlation technique and defect.
According to one aspect of the disclosure, there is provided a kind of work arm support of excavator, the excavator include workbench,
A type frame, dipper and the scraper bowl for being fixed on dipper one end being fixed on the workbench, the work arm support include underarm
Frame, supporting rod, upper arm support and top pulleys：
The lower arm support lower end is articulated with the workbench, and the lower arm support upper end is hinged with the supporting rod；It is described
Supporting rod one end is connected to the lower arm support, and the other end is articulated with the top of the A type frame；The lower arm support, the supporting rod and
The A type frame supporting structure triangular in shape；
The lower end of the upper arm support is articulated with the upper end of the lower arm support, and the upper arm support upper end sets the top to slide
Wheel, the upper arm support upper end is by guy wire with being connected at the top of the A type frame；The dipper is arranged at the lower arm support.
In a kind of exemplary embodiment of the disclosure, the lower arm support and the upper arm support are in the workbench
Identical angle is inclined upwardly, and during digging operation, the additional force components that the upper arm support is subject to are inclined under the upper arm support axis
The pulling force of side, this additional force components and its own gravity and the guy wire, which is formed, to be balanced, and work arm support is in stable state.
In a kind of exemplary embodiment of the disclosure, the supporting rod includes the main body of the left and right sides and the horizontal stroke of centre
To connecting rod, and one end per side main body, with hinged at the top of the A type frame, the upper end of the other end and the lower arm support is hinged.
In a kind of exemplary embodiment of the disclosure, dipper crowding gear, the pushing machine are additionally provided with the lower arm support
Structure includes pushing axis and pushing gear, the frame body for pushing axis and have passed through the lower arm support, the pushing gear and the bucket
Rack engagement on bar, for releasing and retracting the dipper.
In a kind of exemplary embodiment of the disclosure, the U-shaped structure of dipper, left and right two bodies of rod of dipper
The both sides of the lower arm support are inserted in, the dipper can be swung around axis center is pushed, in the plane perpendicular to pushing axis, meshing point
In an engagement zone of action；The center line of the supporting rod, by or be adjacent to the engagement zone of action
In a kind of exemplary embodiment of the disclosure, the upper arm support include one kind in truss structure and girder construction or
Two kinds of combination.
According to one aspect of the disclosure, there is provided a kind of excavator, has the work of the excavator as described in above-mentioned any one
Make arm support.
In a kind of exemplary embodiment of the disclosure, the excavator further includes traction rope, one end of the traction rope
The lifting device being fixed on workbench is connected to, the other end of the traction rope around the top pulleys and is connected to institute
Scraper bowl is stated, the traction rope realizes the lifting or decline to scraper bowl under the drive of the lifting device.
As shown from the above technical solution, it is the advantages of the work arm support of the excavator of the disclosure with good effect：
A kind of work arm support for excavator that the disclosure provides, wherein excavator include workbench, are fixed on work and put down
A type frame, dipper and the scraper bowl for being fixed on dipper one end on platform, work arm support include lower arm support, supporting rod, upper arm support and top
Pulley：Arm support lower end is wherein descended to be articulated with workbench, lower arm support upper end is hinged with supporting rod one end, and the supporting rod other end is hinged
At the top of A type frame, and lower arm support, supporting rod and A type frame supporting structure triangular in shape, the lower end of upper arm support are articulated with lower arm support
Upper end, upper arm support upper end set top pulleys, and upper arm support upper end is connected by guy wire with A type frame top, the U-shaped bucket in section
Bar, its both sides body of rod are arranged at the both sides of lower arm support.
On the one hand, the work arm support for the excavator that the disclosure provides has stable force structure, can eliminate and excavate
When machine gnaws foundation (i.e. scraper bowl excavates the material of material heap front end bottommost), jack up crane arm then it is quick under be rivals in a contest the structures such as guy wire
The impact of part, extends the service life of the structural members such as guy wire.
On the other hand, the disclosure replaces original crane arm with arm support, lower arm support, while adds a lower arm support branch
Strut is supported near its hinge joint, so descends the part that arm support is truss；In excavator normal operation, counter-force is pushed
Mainly born by lower arm support strut, due to the meshing point of pushing gear and dipper upper rack, the distance to supporting rod hinge is close
(or coincidence), lower arm support is primarily subjected to the tension and compression stress of forward direction, and the moment of flexure that it bears is smaller；Meanwhile upper arm support is solely subjected to forward direction
Tension and compression stress and be not subject to moment of flexure, such structural improvement stress of arm support, is significantly reduced upper and lower compared to former crane arm
The section modulus of arm support, further reduces the weight of arm support and whole work arm support；The weight of corresponding counterweight also reduces, so as to
To mitigate main screw lift, and then reduce revolution inertia, shorten gyration time, reduce the consumption etc. of revolution and walking, so that larger
Ground improves the working performance of complete machine.
Another further aspect, is needing the occasion of long-armed mine excavator, only can also lengthen upper arm support part, and lower arm support
Remain unchanged with associated part, provided a convenient for same type for different occasions；In addition by the crane arm of an original entirety
Two sections of upper arm support and lower arm support are changed to, easy to manufacture and repair, is further reduced the cost.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.It should be evident that drawings in the following description are only the disclosure
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 shows the schematic side view of the mine excavator work arm support of correlation technique；
Fig. 2 shows to include the schematic side view of the mine excavator of the work arm support in disclosure exemplary embodiment；
Fig. 3 is the schematic cross-sectional view according to A-A cuttings in Fig. 2；
Fig. 4 is supporting rod B in fig. 2 in disclosure exemplary embodiment to schematic diagram；
Fig. 5 shows another side view signal for including the mine excavator of the work arm support in disclosure exemplary embodiment
Figure.
Embodiment
Example embodiment is described more fully with referring now to attached drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot
Structure or characteristic can be incorporated in one or more embodiments in any suitable manner.In the following description, there is provided permitted
More details fully understand embodiment of the present disclosure so as to provide.It will be appreciated, however, by one skilled in the art that can
Omitted with putting into practice the technical solution of the disclosure one or more in the specific detail, or others side can be used
Method, constituent element, device, step etc..In other cases, be not shown in detail or describe known solution to avoid a presumptuous guest usurps the role of the host and
So that each side of the disclosure thickens.
In this specification using term "one", " one ", "the" and " described " to represent there are one or more elements/
Part/etc.；Term " comprising " and " having " is representing the open meaning being included and refer to except listing
Key element/part/also may be present outside waiting other key element/part/etc.；Term " first " and " second " etc. are only made
Used for mark, be not the quantity limitation to its object.
Fig. 1 shows the schematic side view of the mine excavator work arm support of correlation technique.
A kind of embodiment of large-sized mining dredger in correlation technique is as shown in Figure 1, its structure mainly includes：Crawler belt row
Walking apparatus, chassis, middle part slewing equipment, upper brace 101, A type frame 102, crane arm 103, top pulleys 104, dipper 105,
Scraper bowl 106, pressing device 107, lifting device, slewing equipment and electric control system etc..Wherein A type frame 102, crane arm
103rd, top pulleys 104, dipper 105, scraper bowl 106 and pressing device 107 constitute main operating mechanism；Scraper bowl during operation
106 complete the digging to material under the lifting force of steel wire rope 108 and the thrust collective effect of pushing gear, fill the shovel of material
Certain angle is turned round on the top of bucket 106 and whole machine under the action of slewing equipment together, and transport is moved in scraper bowl 106
During the top of vehicle, 106 bottom of scraper bowl opens and unloads material；Then the top of whole machine goes back to job position, dipper again
105 withdraw, and boom hoist cable 108 is transferred, and is ready for the operation of next circulation.
The characteristics of excavator in correlation technique is：Crane arm 103 is an integral solder part, and 103 root of crane arm is cut with scissors
101 front end of upper brace is connected on, 103 top of crane arm is equipped with top pulleys 104, and pressing device is arranged in crane arm 103
Portion.With current understanding and understanding, the embodiment by structure and control principle due to being limited, it is believed that at least there are following obvious
Defect：
On the one hand, such a excavator is in operation process, and when excavator gnaws foundation, lifting force is smaller, and dipper crowding gear is complete
Dipper is pushed out, crane arm can be jacked up by pushing counter-force, crane arm is rotated around fitting well, guy wire loosens, at this moment if crane arm
Inertia is transferred, and great impact will be produced to guy wire, so as to shorten the service life of guy wire and associated part.Gnaw foundation and refer to power shovel
The material of bottommost before excavation material heap, dipper crowding gear release with all strength at this time, the lifting force of boom hoist cable is smaller, easily struggles against
Bar jacks up the phenomenon of crane arm.
On the other hand, since overall crane arm weight is big, corresponding machine counterweight is also big, both cause the weight of complete machine to increase
Greatly, the idle work of machine is added, and then influences machine performance.
Fig. 2 shows to include the schematic side view of the mine excavator of the work arm support in disclosure exemplary embodiment；Fig. 3
For according to the schematic cross-sectional view of A-A cuttings in Fig. 2；Fig. 4 be supporting rod B in fig. 2 in disclosure exemplary embodiment to
Schematic diagram.
This example embodiment provide firstly a kind of work arm support of excavator, as shown in Figure 2 to 4, its specific knot
Structure example is as follows：
A kind of work arm support for excavator that the disclosure provides, applied to excavator, wherein excavator includes workbench
208 grades of A type frame 204 being fixed thereon, dipper 210 and the scraper bowl 211 for being fixed on dipper one end, work arm support include lower arm support
201st, supporting rod 203, upper arm support 202 and top pulleys 205：Existing integral type crane arm is divided into upper arm support 202 by the disclosure
And lower 201 two parts of arm support, and supporting rod 203 is set between the top of lower arm support 201 and the top of A type frame 204, with this
204 supporting structure triangular in shape of lower arm support 201, supporting rod 203 and A type frame；The top of upper arm support 202 is provided with top pulleys
205, and be connected by guy wire 206 with 204 upper end of A type frame, upper arm support 202 and top pulleys 205 thereon are realized to lifting
The support and commutation of rope 212；In addition dipper 210 is arranged on lower arm support 201.
On the one hand, the crane arm and its work arm support of composition that the disclosure provides have stable force structure, can disappear
Except when excavator gnaws foundation (i.e. scraper bowl excavates the material of material heap front end bottommost), jack up crane arm then it is quick under be rivals in a contest it is taut
The impact of the structural members such as rope, extends the service life of the structural members such as guy wire.
On the other hand, the disclosure replaces original crane arm with arm support, lower arm support, while adds a lower arm support branch
Strut is supported near its hinge joint, so descends the part that arm support is truss；In excavator normal operation, counter-force is pushed
Mainly born by lower arm support strut, the distance due to pushing axis center to supporting rod hinge is close (or even coincidence), on lower arm support
The moment of flexure born is smaller, lower arm support be primarily subjected to forward direction tension and compression stress, equally, upper arm support be solely subjected to forward direction tension and compression stress and
It is not subject to moment of flexure, such structural improvement stress of arm support, compared to the section modulus that former crane arm can reduce upper and lower arm support,
Further reduce the weight of arm support and whole work arm support；The weight of corresponding counterweight also reduces, so as to mitigate main screw lift,
And then reduce revolution inertia, shorten gyration time, reduce the consumption etc. of revolution and walking, so as to significantly improve the work of complete machine
Performance.
Another further aspect, is needing the occasion of long-armed mine excavator, only can also lengthen upper arm support part, and lower arm support
Remain unchanged with associated part, provided a convenient for same type for different occasions；In addition by the crane arm of an original entirety
Two sections of upper arm support and lower arm support are changed to, easy to welding, processing, transporting and repairing, is further reduced the cost.
In the following, a kind of work arm support of excavator in this example embodiment will be further elaborated.
In this exemplary embodiment, as shown in Fig. 2, excavator can include workbench 208 and be fixed on work and put down
A type frame 204 on platform 208, dipper 210 and the scraper bowl 211 for being fixed on 210 one end of dipper；The lower end of lower arm support 201 can be with work
The front end for making platform 208 is hinged, and can also be hinged with the lower end of the A type frame 204 close to 208 front end of workbench；Under making
Arm support 201 forms the supporting structure of stabilization, it is also necessary to a supporting rod 203, the branch are set between lower arm support 201, A type frame 204
The both ends of strut 203 can be hinged with the upper end of lower arm support 201 and the top of A type frame 204 respectively, and three forms stable three
Angular supporting structure.
In this exemplary embodiment, lower arm support 201 and upper arm support 202 can be in identical angle with workbench 208
It is inclined upwardly, that is, descends arm support 201 and upper arm support 202 is hinged and the central axis of the two may be on same straight line, excavating
During operation, the lower section for the upper arm support axis of additional force components deviation that upper arm support 202 is subject to, this additional force components and its own gravity are with stretching tight
The pulling force of rope forms balance, work arm support is in stable state.
Further, in excavator normal operation, supporting rod 203 needs to bear from lower arm support 201 and upper arm support 202
The pushing counter-force of hinge joint, and the pushing counter-force is larger, in order to play stable support, therefore sets the structure of supporting rod 203
Can be truss structure or girder construction, as shown in figure 4, main body and middle multiple transverse directions that can be including the left and right sides connect
Bar, wherein one end per side main body can be hinged with the top of A type frame 204, the upper end of the other end and lower arm support is hinged, in others
In embodiment, supporting rod can also be the structure that other can bear to push counter-force, and the disclosure does not do particular determination herein.
In this exemplary embodiment, dipper crowding gear 207 can also be set on lower arm support, and dipper crowding gear 207 can include
Push axis and pushing gear, and push axis can to pass through the frame body of underarm frame 201, and pushing gear can with dipper 203
Rack engages, and dipper 210 is released or retracted to pushing gear by rotating.
Further, dipper 210 can be rotatably fixed between the both ends of lower arm support 201 by attachment device, institute
The left body of rod and the right body of rod can be included by stating dipper 210, and the left body of rod can respectively symmetrically be inserted in underarm with the right body of rod
The both sides of frame 201, dipper 210 can be swung around axis center is pushed.
In the plane for pushing axis, meshing point may be in an engagement zone of action, in order to past in dipper
Multiple release can also lead to the center line of supporting rod 203 with retracting the moment of flexure for reducing in action and resulting from lower arm support as far as possible
Cross or be adjacent to engagement zone of action as far as possible.
For example, in this exemplary embodiment, as shown in Fig. 2, for the consideration in structure, the supporting rod 203
Center line is adjacent to engagement zone of action, without passing through pushing gear-rack meshing point.In other example embodiments,
As in Fig. 5 another include disclosure exemplary embodiment in work arm support mine excavator, in this embodiment, branch
The hinge joint of strut 303 has passed through pushing gear-rack meshing point (point M).
In this exemplary embodiment, in order to realize the lifting to scraper bowl 211, on the basis of above-mentioned triangular support structure
Arm support 202 and top pulleys 205 can also be set.The lower end of upper arm support 202 can be articulated with the upper end of lower arm support 201, on
The upper end of arm support 202 can be connected by guy wire 206 with the top of A type frame 204, three and then form relatively stable triangle branch
Support structure.The top pulleys 205 that can rotate around the axis, the top pulleys can also be further set in the upper end of upper arm support 202
205 can be used for the traction rope being connected on excavator workbench is supported and turned to.
In this exemplary embodiment, as shown in figure 3, due in operation 202 part of arm support be not subject to moment of flexure, and only hold
By positive tension and compression stress, the structure compared to upper arm support 202 for former crane arm can mitigate, and can be truss structure or beam
Structure, or other can bear the structure of tension and compression stress, and the disclosure does not do particular determination herein.
The crane arm of an original entirety is changed to upper arm support 202, lower arm support 201 and a support by this example embodiment
Bar 203, in excavator normal operation, pushes counter-force and is mainly born by lower arm support strut, lower arm support is primarily subjected to the drawing of forward direction
Compression；It is and smaller by the moment of flexure that pushing counter-force forms lower arm support or even can ignore；Similarly upper arm support is solely subjected to forward direction
Tension and compression stress and be not subject to moment of flexure, such structural improvement stress of arm support, compared to former crane arm can reduce upper and lower arm support
Section modulus；The intensity of corresponding A type frame can be strengthened, since overall stress improves, the weight and A of increased supporting rod 203
Type frame is strengthened and the sum of increased weight, it will the weight reduced less than upper arm support 202 and lower arm support 201, further reduces arm
The weight of frame and whole work arm support；The weight of corresponding counterweight also reduces, and so as to mitigate main screw lift, and then reduces back
Turn inertia, shorten gyration time, reduce consumption of revolution and walking etc., so as to significantly improve the working performance of complete machine.
In other examples, the upper of different length can also be replaced in the case where needing long-armed mine excavator
Arm support 202, and lower arm support and associated part remain unchanged, and are provided a convenient for same type for different occasions.
The crane arm of an original entirety is changed to two sections of upper arm support and underarm by the work arm support in this example embodiment
Frame, is also convenient for manufacturing and repairs, further reduce the cost.
According to the second aspect of the disclosure, there is provided a kind of excavator, the excavator have included at least above-mentioned working arm
Frame.
It can also include traction rope 212 in the excavator of this example embodiment, one end of traction rope 212 can be connected to admittedly
Due to the lifting device on workbench, the other end of traction rope 212 can be connected to scraper bowl 211 around top pulleys 205, lead
Messenger 212 can realize the lifting or decline to scraper bowl under the drive of lifting device.Further, lifting device can be volume
Raise machine, or other devices that can be lifted or transferred to traction rope, the disclosure do not do particular determination herein.
A kind of excavator in this example embodiment, its advantage carry out in above-mentioned work arm support included by it
Detailed description, this is no longer going to repeat them.
Above-mentioned described feature, structure or characteristic can be incorporated in one or more embodiment party in any suitable manner
In formula, if possible, it is characterized in discussed in each embodiment interchangeable.In above description, there is provided many specific thin
Section fully understands embodiments of the present invention so as to provide.It will be appreciated, however, by one skilled in the art that this can be put into practice
The technical solution of invention is without one or more in the specific detail, or can use other methods, component, material
Material etc..In other cases, known features, material or operation are not shown in detail or describe to avoid fuzzy each side of the invention
Face.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
It should be appreciated that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by appended claim.
Claims (8)
1. a kind of work arm support of excavator, the excavator includes workbench, the A types being fixed on the workbench
Frame, dipper and the scraper bowl for being fixed on dipper one end, it is characterised in that the work arm support includes lower arm support, supporting rod, upper arm support
And top pulleys：
The lower arm support lower end is articulated with the workbench, and the lower arm support upper end is hinged with the supporting rod；The support
Bar one end is connected to the lower arm support, and the other end is articulated with the top of the A type frame；The lower arm support, the supporting rod and the A
Type frame supporting structure triangular in shape；
The lower end of the upper arm support is articulated with the upper end of the lower arm support, and the upper arm support upper end sets the top pulleys, institute
Arm support upper end is stated by guy wire with being connected at the top of the A type frame；The dipper is arranged at the lower arm support.
2. the work arm support of excavator according to claim 1, it is characterised in that the lower arm support and the upper arm support are equal
It is inclined upwardly with the workbench in identical angle, during digging operation, additional force components deviation institute that the upper arm support is subject to
The lower section of arm support axis is stated, this additional force components and the pulling force of its own gravity and the guy wire are formed and balanced, and make work arm support
In stable state.
3. the work arm support of excavator according to claim 1, it is characterised in that the supporting rod includes the left and right sides
Main body and the transverse link of centre, and one end per side main body and A type frame top are hinged, the other end and the lower arm support
Upper end be hinged.
4. the work arm support of excavator according to claim 1, it is characterised in that be additionally provided with pushing on the lower arm support
Mechanism, the dipper crowding gear include pushing axis and pushing gear, and the frame body for pushing axis and have passed through the lower arm support is described to push away
Knob wheel is engaged with the rack on the dipper, for releasing and retracting the dipper.
5. the work arm support of excavator according to claim 3, it is characterised in that the U-shaped structure of dipper, the bucket
Left and right two bodies of rod of bar are inserted in the both sides of the lower arm support, and the dipper can be swung around axis center is pushed, perpendicular to pushing axis
Plane in, meshing point be in one engagement zone of action in；The center line of the supporting rod, by or be adjacent to the engagement
Zone of action.
6. according to the work arm support of Claims 1 to 5 any one of them excavator, it is characterised in that the upper arm support includes
The combination of one or both of truss structure and girder construction.
7. a kind of excavator, it is characterised in that there is the work arm support of the excavator as described in any one of claim 1~6.
8. excavator according to claim 7, it is characterised in that the excavator further includes traction rope, the traction rope
One end be connected to the lifting device being fixed on workbench, the other end of the traction rope bypasses the top pulleys and company
The scraper bowl is connected to, the traction rope realizes the lifting or decline to scraper bowl under the drive of the lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167703.3A CN107938736B (en) | 2017-11-21 | 2017-11-21 | Working arm support of excavator and excavator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167703.3A CN107938736B (en) | 2017-11-21 | 2017-11-21 | Working arm support of excavator and excavator |
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| CN107938736A true CN107938736A (en) | 2018-04-20 |
| CN107938736B CN107938736B (en) | 2020-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322338A (en) * | 2018-10-30 | 2019-02-12 | 太原重工股份有限公司 | Excavator and its pushing force control method |
| CN109706990A (en) * | 2018-12-27 | 2019-05-03 | 太原重工股份有限公司 | Mine excavator operating mechanism and mine excavator |
| CN109826259A (en) * | 2018-12-21 | 2019-05-31 | 太原重工股份有限公司 | Mine excavator opens bucket mechanism controls device and control method |
| US11867961B2 (en) | 2019-03-27 | 2024-01-09 | Corning Research & Development Corporation | Aversive cable with sacrificial lobes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109322338A (en) * | 2018-10-30 | 2019-02-12 | 太原重工股份有限公司 | Excavator and its pushing force control method |
| CN109322338B (en) * | 2018-10-30 | 2021-07-16 | 太原重工股份有限公司 | Excavator and pushing pressure control method thereof |
| CN109826259A (en) * | 2018-12-21 | 2019-05-31 | 太原重工股份有限公司 | Mine excavator opens bucket mechanism controls device and control method |
| CN109826259B (en) * | 2018-12-21 | 2021-04-06 | 太原重工股份有限公司 | Control device and control method for bucket opening mechanism of mining excavator |
| CN109706990A (en) * | 2018-12-27 | 2019-05-03 | 太原重工股份有限公司 | Mine excavator operating mechanism and mine excavator |
| CN109706990B (en) * | 2018-12-27 | 2021-04-20 | 太原重工股份有限公司 | Mining excavator working mechanism and mining excavator |
| US11867961B2 (en) | 2019-03-27 | 2024-01-09 | Corning Research & Development Corporation | Aversive cable with sacrificial lobes |
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