CN103195128A - Breakout force balancing system of loader - Google Patents

Breakout force balancing system of loader Download PDF

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Publication number
CN103195128A
CN103195128A CN2013101347490A CN201310134749A CN103195128A CN 103195128 A CN103195128 A CN 103195128A CN 2013101347490 A CN2013101347490 A CN 2013101347490A CN 201310134749 A CN201310134749 A CN 201310134749A CN 103195128 A CN103195128 A CN 103195128A
Authority
CN
China
Prior art keywords
loader
oil cylinder
breakout force
balancing system
piece
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.)
Pending
Application number
CN2013101347490A
Other languages
Chinese (zh)
Inventor
阎维佳
刘志明
杨国明
殷春明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DINGSHENG HEAVY INDUSTRY MACHINERY Co Ltd
Original Assignee
DINGSHENG HEAVY INDUSTRY MACHINERY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DINGSHENG HEAVY INDUSTRY MACHINERY Co Ltd filed Critical DINGSHENG HEAVY INDUSTRY MACHINERY Co Ltd
Priority to CN2013101347490A priority Critical patent/CN103195128A/en
Publication of CN103195128A publication Critical patent/CN103195128A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a breakout force balancing system of a loader. The breakout force balancing system is characterized by comprising an adjusting oil cylinder and a hydraulic control circuit controlling the adjusting oil cylinder, a piston rod of the adjusting oil cylinder is connected with a movable balancing block which is slidably connected with a fixed balancing block through a moving guide rail, and the tail of the adjusting oil cylinder and the fixed balancing block are mounted on a vehicle. The breakout force balancing system of the loader has the advantages that the breakout force balancing system can realize adjusting of breakout force of the loader, and the moving balancing block can be taken back when huge breakout force is not needed, so that stabilizing moment of the vehicle is increased while working condition requirements on flexibility and high heavy-load stability of the loader are met, application range of the loader is greatly expanded, and high social and economic benefits are realized.

Description

Loader digging force balance sysmte
Technical field
This patent belongs to the loader technical field, particularly relates to a kind of loader digging force balance sysmte.
Background technology
The SWB loader has following advantage than major axis apart from loader: shorter because of wheelbase, min. turning radius is less, and the trafficability characteristic height especially is fit to the place operation of narrow space; During loading operation, because it turns to flexibly, the operating efficiency height, more energy-conservation apart from loader than major axis under the equal workload.And the external force that acts on the loader can produce two kinds of moments: tilting moment and stabilizing moment.Shorter because of its wheelbase, length over ends of body is little, so the stabilizing moment of the loader of SWB is less.During the loader operation, the tilting moment that digging force produces is as the stabilizing moment greater than loader, then loader will produce along the earth point line (tipping pitman) of two front-wheels and tumble, and the digging force that this moment, operating cylinder produced can not get maximum performance, and loader is not suitable for operation under severe duty.
Summary of the invention
This patent provides a kind of loader digging force balance sysmte for solving the technical problem that exists in the known technology, and this balance sysmte can make vehicle carry out flexible operation in activity balancing piece withdrawal pattern can to stretch out pattern at the activity balancing piece again and carry out heavily loaded operation.
A kind of loader digging force balance sysmte, it is characterized in that: comprise the hydraulic control circuit of regulating oil cylinder and control and regulation oil cylinder, the piston rod of regulating oil cylinder links to each other with the activity balancing piece, the activity balancing piece is slidingly connected by moving guide rail and stable equilibrium piece, and afterbody and the stable equilibrium piece of regulating oil cylinder are installed on the car body.
This patent can also be by the following technical solutions:
Preferably, described hydraulic control circuit is made up of three position four-way directional control valve, bidirectional hydraulic lock and fluid pressure line, and two outlets of three position four-way directional control valve all link to each other with the adjusting oil cylinder with fluid pressure line by bidirectional hydraulic lock.
Advantage and good effect that this patent has are:
1. the balance weight of the present invention's employing comprises stable equilibrium piece and activity balancing piece, by the two-way movement of activity balancing piece the loader stabilizing moment is adjusted, and then is realized the adjusting of loader digging force.
2. the present invention adopts and regulates oil cylinder the activity balancing piece is moved control, and the operator can realize control to the activity balancing piece easily and efficiently at steering position.
3. loader digging force balance sysmte of the present invention can realize the digging force adjusting of loader, when not needing big digging force, the activity balancing piece can be regained, improved the mobility of vehicle, in the big digging force of needs, the activity balancing piece can have been stretched out, improved the stabilizing moment of vehicle, take into account the maneuverability of loader and the operating mode demand of heavily loaded high stability, expanded the scope of application of loader greatly, realized high social and economic benefit.
Description of drawings
Fig. 1 is the structural representation of this patent;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of the hydraulic control circuit of this patent;
Fig. 5 is the force analysis schematic diagram of loader when the oil cylinder retracted mode that has adopted this patent;
Fig. 6 is the force analysis schematic diagram of loader when oil cylinder stretches out state that has adopted this patent;
Among the figure: 1. stable equilibrium piece; 2. activity balancing piece; 3. moving guide rail; 4. adjusting oil cylinder; 5. hydraulic control circuit; 51. electromagnetic valve; 52. bidirectional hydraulic lock; 53. fluid pressure line; 6, car body.
The specific embodiment
For further understanding summary of the invention, characteristics and the effect of this patent, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1~4, a kind of loader digging force balance sysmte, comprise the hydraulic control circuit 5 of regulating oil cylinder 4 and control and regulation oil cylinder, the piston rod of regulating oil cylinder links to each other with activity balancing piece 2, the activity balancing piece is slidingly connected by moving guide rail 3 and stable equilibrium piece 1, and afterbody and the stable equilibrium piece of regulating oil cylinder are installed on the car body 6.
Hydraulic control circuit is made up of three position four-way directional control valve 51, bidirectional hydraulic lock 52 and fluid pressure line 53, and two outlets of three position four-way directional control valve all link to each other with the adjusting oil cylinder with fluid pressure line by bidirectional hydraulic lock.
The principle of this patent is:
As shown in Figure 5, be equipped with the loader of loader digging force balance sysmte of the present invention, under shovel dress operating mode (supposing that the scope of operation is level road), the external force that acts on the loader can produce two kinds of moments: tilting moment M 0With stabilizing moment M s
Wherein:
M o=F*L 1
M s=G 0*L 2+G 1*L 3
G 0: complete machine weight (not comprising the activity balancing piece)
G 1: activity balancing piece weight
F ': digging force counter-force
Maximum digging force F by the stabilizing moment restriction Max1=F ' Max=(G 0* L 2+ G 1* L 3)/L 1
As shown in Figure 6, when the activity balancing piece moves backward, activity balancing piece center of gravity to the distance of tipping pitman by L 3Increase to L 3+ Δ L.
At this moment:
M o=F*L 1
M s=G 0*L 2+G 1*(L 3+ΔL)
Maximum digging force F by the stabilizing moment restriction Max2=F ' Max={ G 0* L 2+ G 1* (L 3+ Δ L) }/L 1, at this moment: adjusting preceding increase value by the maximum digging force of stabilizing moment restriction is F Max1-F Max2=G 2* Δ L/L 1
Loader digging force balance sysmte hydraulic control circuit of the present invention forms 53 by electromagnetic valve 51, bidirectional hydraulic lock 52, fluid pressure line.Carry out the activity balancing piece and move when controlling, electromagnetic valve 51 is opened, and the flexible activity balancing piece of realizing of control and regulation oil cylinder moves forward and backward.After the activity balancing piece is regulated and is put in place, 51 times metas of electromagnetic valve, bidirectional hydraulic lock 52 lockings, the activity balancing piece moves in the time of can preventing the loader operation.
Although by reference to the accompanying drawings the preferred embodiment of this patent is described above; but this patent is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under the enlightenment of this patent; not breaking away under the scope situation that this patent aim and claim protect, can also make a lot of forms, these all belong within the protection domain of this patent.

Claims (2)

1. loader digging force balance sysmte, it is characterized in that: comprise the hydraulic control circuit of regulating oil cylinder and control and regulation oil cylinder, the piston rod of regulating oil cylinder links to each other with the activity balancing piece, the activity balancing piece is slidingly connected by moving guide rail and stable equilibrium piece, and afterbody and the stable equilibrium piece of regulating oil cylinder are installed on the car body.
2. loader digging force balance sysmte as claimed in claim 1, it is characterized in that: described hydraulic control circuit is made up of three position four-way directional control valve, bidirectional hydraulic lock and fluid pressure line, and two outlets of three position four-way directional control valve all link to each other with the adjusting oil cylinder with fluid pressure line by bidirectional hydraulic lock.
CN2013101347490A 2013-04-17 2013-04-17 Breakout force balancing system of loader Pending CN103195128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101347490A CN103195128A (en) 2013-04-17 2013-04-17 Breakout force balancing system of loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101347490A CN103195128A (en) 2013-04-17 2013-04-17 Breakout force balancing system of loader

Publications (1)

Publication Number Publication Date
CN103195128A true CN103195128A (en) 2013-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101347490A Pending CN103195128A (en) 2013-04-17 2013-04-17 Breakout force balancing system of loader

Country Status (1)

Country Link
CN (1) CN103195128A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278705A (en) * 2014-09-22 2015-01-14 柳工常州挖掘机有限公司 Movable counterweight assembly
US11788258B2 (en) 2020-03-20 2023-10-17 Caterpillar Inc. Systems and methods for determining a locational value of a load associated with an implement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080203045A1 (en) * 2006-10-27 2008-08-28 Pech David J Mobile Lift Crane With Variable Position Counterweight
CN101839003A (en) * 2009-03-18 2010-09-22 陈炯 Multifunctional crane excavator
CN102826464A (en) * 2012-08-29 2012-12-19 三一重工股份有限公司 Crawler crane mobile counterweight device and crawler crane
CN102992209A (en) * 2012-12-20 2013-03-27 中联重科股份有限公司 Balance weight of crane, crane and moment balancing method of crane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080203045A1 (en) * 2006-10-27 2008-08-28 Pech David J Mobile Lift Crane With Variable Position Counterweight
CN101839003A (en) * 2009-03-18 2010-09-22 陈炯 Multifunctional crane excavator
CN102826464A (en) * 2012-08-29 2012-12-19 三一重工股份有限公司 Crawler crane mobile counterweight device and crawler crane
CN102992209A (en) * 2012-12-20 2013-03-27 中联重科股份有限公司 Balance weight of crane, crane and moment balancing method of crane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278705A (en) * 2014-09-22 2015-01-14 柳工常州挖掘机有限公司 Movable counterweight assembly
US11788258B2 (en) 2020-03-20 2023-10-17 Caterpillar Inc. Systems and methods for determining a locational value of a load associated with an implement

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Application publication date: 20130710