CN207228190U - A kind of scalable digging arm - Google Patents
A kind of scalable digging arm Download PDFInfo
- Publication number
- CN207228190U CN207228190U CN201721204912.6U CN201721204912U CN207228190U CN 207228190 U CN207228190 U CN 207228190U CN 201721204912 U CN201721204912 U CN 201721204912U CN 207228190 U CN207228190 U CN 207228190U
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- arm
- hydraulic stem
- travelling
- scalable
- fixed
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Abstract
It the utility model is related to a kind of scalable digging arm, including fixed arm, telescopic arm, the first hydraulic stem, the second hydraulic stem and the 3rd hydraulic stem；Telescopic arm includes travelling arm and slave arm, and fixed arm and travelling arm are the tubular structure of a Longitudinal extending, and travelling arm is in fixed arm and can stretch out or retract being relatively fixed arm straight line；Slave arm is longitudinally arranged at the top of fixed arm, and the front end of slave arm and the front end of travelling arm connect；First hydraulic stem is in inside travelling arm, and one end of the first hydraulic stem and the front end of travelling arm are hinged, and the other end of the first hydraulic stem and the rear end of fixed arm are hinged；One end of second hydraulic stem and the rear end of slave arm are hinged；One end of 3rd hydraulic stem is hinged on the lower part of fixed arm front end.The flexible of travelling arm is controlled by the first hydraulic stem, the structural strength of scalable digging arm is improved using slave arm, the scalable digging arm of the utility model tool has the advantages of operation is flexible, and structural strength is high, and service life is long.
Description
Technical field
It the utility model is related to technical field of engineering machinery, and in particular to a kind of scalable digging arm.
Background technology
Excavator is mechanical equipment important in engineering construction, and digging arm is the important auxiliary device of excavator.Tradition
The length of digging arm be all fixed, therefore small arm of digger malfunction.Also occurring some currently on the market can stretch
The digging arm of contracting, but principal arm is simply simply set in outside telescopic arm by these digging arms, there are structure for such telescopic arm
Intensity is low, and there is abrasion greatly when principal arm and telescopic arm use, and the phenomenon rectified occurs over time.
Utility model content
It is ineffective to solve existing digging arm operation the purpose of this utility model is to provide a kind of scalable digging arm
The problem of work, structural strength is low, principal arm and telescopic arm serious wear.
To achieve the above object, the utility model provides a kind of scalable digging arm, and the scalable digging arm includes solid
Fixed arm, telescopic arm, the first hydraulic stem, the second hydraulic stem and the 3rd hydraulic stem；The telescopic arm includes travelling arm and slave arm, institute
State the tubular structure that fixed arm and travelling arm are a Longitudinal extending and its lateral cross section shape is identical, the travelling arm is in
And can the relatively described stretching of fixed arm straight line or retraction in the fixed arm；The slave arm is longitudinally arranged at the fixation
The top of arm, the front end of the slave arm are connected with the front end of the travelling arm；First hydraulic stem is in the travelling arm
Inside, one end and the front end of the travelling arm of first hydraulic stem are hinged, the other end of first hydraulic stem with it is described
The rear end of fixed arm is hinged；One end and the rear end of the slave arm of second hydraulic stem are hinged；3rd hydraulic stem
One end is hinged on the lower part of the fixed arm front end.
Preferably, the lateral cross section of the fixed arm and travelling arm is rectangle.
Preferably, two longitudinal edges of the fixed arm upper surface extend laterally to form two slides, after the slave arm
End is slidably mounted at the top of the fixed arm by the sliding block being stuck on two slides.
Preferably, the slave arm includes the first connecting plate and two the second connecting plates, first connecting plate parallel to
The upper surface of the fixed arm, two second connecting plates are vertically connected on the first connecting plate both sides, second liquid
One end of compression bar is hinged between two second connecting plates.
Preferably, the lateral cross section of the sliding block is u-shaped, and the sliding block is mounted by means of bolts on two described
The outside of two connecting plates.
Preferably, positioning bolt is set on the sliding block.
The utility model has the following advantages that：The flexible of travelling arm is controlled by the first hydraulic stem, is improved using slave arm
The structural strength of scalable digging arm, prevents the travelling arm stress deformation in mining process, the utility model tool it is scalable
Digging arm has the advantages of operation is flexible, and structural strength is high, and service life is long.
Brief description of the drawings
Fig. 1 is the structure chart under the scalable digging arm stretched condition of the utility model.
Fig. 2 is the structure chart under the scalable digging arm contracted state of the utility model.
Fig. 3 is the longitudinal profile schematic diagram of the scalable digging arm of the utility model.
Fig. 4 is the horizontal section schematic diagram of the utility model fixed arm and travelling arm.
Embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.In the present embodiment
In, using the length direction of fixed arm as longitudinal direction, it is horizontal direction to be transversely to the machine direction direction.
Embodiment 1
As shown in Figure 1,2 and 3, which includes fixed arm 1, telescopic arm 2, the first hydraulic stem 3, the second hydraulic pressure
4 and the 3rd hydraulic stem 5 of bar.The flexible of travelling arm is controlled by the first hydraulic stem 3, scalable excavation is improved using slave arm 22
The structural strength of arm, prevents 21 stress deformation of travelling arm in mining process, and the scalable digging arm of the utility model tool has
The advantages of operation is flexible, and structural strength is high, and service life is long.
As shown in figure 4, telescopic arm 2 includes travelling arm 21 and slave arm 22, fixed arm 1 and travelling arm 21 are a longitudinal direction
The lateral cross section shape of the tubular structure of extension, fixed arm 1 and travelling arm 21 is identical.In the present embodiment, fixed arm 1 and slip
The lateral cross section of arm 21 is rectangle, naturally it is also possible to is trapezoidal or other shapes.Travelling arm 21 is in fixed arm 1 and can
To be relatively fixed the stretching of 1 straight line of arm or retract.Slave arm 22 is the U-lag of a lengthwise, and slave arm 22 is longitudinally arranged at solid
The top of fixed arm 1, the front end of slave arm 22 are connected with the front end of travelling arm 21.Slave arm 22 includes the first connecting plate 222 and two
A second connecting plate 223, the first connecting plate 222 are a longitudinally disposed rectangular plate-like structure, the first connecting plate 222 parallel to
The upper surface of fixed arm 1.Second connecting plate 223 is platy structure, and two the second connecting plates 223 are vertically connected on the first connecting plate
222 both sides.The structural strength of travelling arm 21 is improved by setting slave arm 22, prevents excavator in mining process,
21 stress of travelling arm is excessive to deform.Two longitudinal edges of the upper surface of fixed arm 1 extend laterally to form two slides.Slave arm
22 rear end is slidably mounted in the top of fixed arm 1 by the sliding block 221 being stuck on two slides.The transverse direction of sliding block 221
Section is u-shaped, and sliding block 221 is respectively and fixedly installed to the outside of two the second connecting plates 223 by bolt.By in slave arm
22 rear end sets sliding block 221 so that slave arm 22 and travelling arm 21 are more steady when sliding, and reduce travelling arm 21 and fix
Abrasion between arm 1, so as to extend the service life of scalable digging arm.In order to can be by it when telescopic arm 2 needs fixed
Fix, in the present embodiment, positioning bolt 224 is also set up on sliding block 221, can be by sliding block by the way that positioning bolt 224 is tightened
221 are fixed on slide.
First hydraulic stem 3, the second hydraulic stem 4 and the 3rd hydraulic stem 5 are connected with the hydraulic pump of excavator by pipeline.It is logical
Cross hydraulic pump and control the flexible of the first hydraulic stem 3, the second hydraulic stem 4 and the 3rd hydraulic stem 5 respectively, the first hydraulic stem 3 is in
Inside travelling arm 21, the rear end of the piston rod and fixed arm 1 of the first hydraulic stem 3 is hinged, the oil cylinder and travelling arm of the first hydraulic stem 3
21 front end is hinged.The flexible of telescopic arm 2 is controlled by controlling the flexible realization of 3 piston rod of the first hydraulic stem, and driver can be with
According to the length of the needs of construction, flexibly control small arm of digger.The oil cylinder of second hydraulic stem 4 is hinged on two the second connecting plates
Between 223, the piston and scraper bowl 7 of the second hydraulic stem 4 are hinged, and front end of the scraper bowl 7 at the same time again with travelling arm 21 is hinged, and passes through control
The piston rod of second hydraulic stem 4 stretches, and then realizes that control scraper bowl 7 is rotated around the hinge joint of scraper bowl 7 and travelling arm 21.The
The piston rod of three hydraulic stems 5 is hinged on the lower part of 1 front end of fixed arm, and the oil cylinder of the 3rd hydraulic stem 5 and the steering arm 6 of excavator are cut with scissors
Connect.Piston rod by controlling the 3rd hydraulic stem 5 stretches, hinged around fixed arm 1 and steering arm 6 so as to fulfill fixed arm 1
Point rotates.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be modified or improved, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.
Claims (6)
1. a kind of scalable digging arm, it is characterised in that the scalable digging arm includes fixed arm, telescopic arm, the first hydraulic pressure
Bar, the second hydraulic stem and the 3rd hydraulic stem；The telescopic arm includes travelling arm and slave arm, and the fixed arm and travelling arm are
The tubular structure of one Longitudinal extending and its lateral cross section shape is identical, the travelling arm are in the fixed arm and can phases
The fixed arm straight line is stretched out or is retracted；The slave arm is longitudinally arranged at the top of the fixed arm, the slave arm
Front end be connected with the front end of the travelling arm；First hydraulic stem is in inside the travelling arm, first hydraulic stem
One end and the front end of the travelling arm be hinged, the rear end of the other end and the fixed arm of first hydraulic stem is hinged；Institute
The one end and the rear end of the slave arm for stating the second hydraulic stem are hinged；One end of 3rd hydraulic stem is hinged on the fixed arm
The lower part of front end.
2. scalable digging arm according to claim 1, it is characterised in that the lateral cross section of the fixed arm and travelling arm
It is rectangle.
3. scalable digging arm according to claim 2, it is characterised in that two longitudinal edge horizontal strokes of the fixed arm upper surface
To two slides are extended to form, the rear end of the slave arm is slidably mounted at institute by the sliding block being stuck on two slides
State the top of fixed arm.
4. scalable digging arm according to claim 3, it is characterised in that the slave arm includes the first connecting plate and two
A second connecting plate, parallel to the upper surface of the fixed arm, two second connecting plates vertically connect first connecting plate
The first connecting plate both sides are connected on, one end of second hydraulic stem is hinged between two second connecting plates.
5. scalable digging arm according to claim 4, it is characterised in that the lateral cross section of the sliding block is u-shaped, institute
State the outside that sliding block is mounted by means of bolts on two second connecting plates.
6. scalable digging arm according to claim 5, it is characterised in that positioning bolt is set on the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204912.6U CN207228190U (en) | 2017-09-19 | 2017-09-19 | A kind of scalable digging arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204912.6U CN207228190U (en) | 2017-09-19 | 2017-09-19 | A kind of scalable digging arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207228190U true CN207228190U (en) | 2018-04-13 |
Family
ID=61863106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721204912.6U Active CN207228190U (en) | 2017-09-19 | 2017-09-19 | A kind of scalable digging arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207228190U (en) |
-
2017
- 2017-09-19 CN CN201721204912.6U patent/CN207228190U/en active Active
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