CN201010925Y - Straight walking mechanism of hydraulic excavator - Google Patents
Straight walking mechanism of hydraulic excavator Download PDFInfo
- Publication number
- CN201010925Y CN201010925Y CNU2007200627564U CN200720062756U CN201010925Y CN 201010925 Y CN201010925 Y CN 201010925Y CN U2007200627564 U CNU2007200627564 U CN U2007200627564U CN 200720062756 U CN200720062756 U CN 200720062756U CN 201010925 Y CN201010925 Y CN 201010925Y
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Abstract
The utility model discloses a beeline walking mechanism of a hydraulic pressure drab. The left advancing oil path of a leftward walking valve core(11) and the right advancing oil path of a rightward walking valve core(5) are respectively communicated with the two entrances of an advancing oil pressure balancing valve(1), the two exits of the advancing oil pressure balancing valve(1) are respectively communicated with a leftward walking motor(2) and a rightward walking motor(3); the leftward backing oil path of the leftward walking valve core(11) and the rightward backing oil path of the rightward walking valve core(5) are respectively communicated with the two entrances of a backing oil pressure balancing valve(4) while the two exits of the backing oil pressure balancing valve(4) are respectively communicated with the leftward walking motor(2) and the rightward walking motor(3). The utility model is a beeline walking mechanism of a hydraulic pressure drab with simple principle, convenient operation, reliable capacity and high cost performance.
Description
Technical field
The utility model relates to a kind of walking mechanism of hydraulic crawler excavator.
Background technology
The walking of hydraulic crawler excavator is, the hydraulic pump that two discharge capacities of drive power source equate, two hydraulic pumps are walked spool and right lateral by left lateral respectively and are walked spool and control left lateral respectively and walk motor and right lateral and walk motor and drive hydraulic crawler excavator and advance or retreat (left and right running motor discharge capacity equates), walk the spool that also is in series with other actions after spool and right lateral are walked spool at left lateral simultaneously.When: operate simultaneously that left and right walking spool advances or when retreating, because pump 1, pump 2 discharge capacities equate, walk spool walks motor to left lateral fluid flow and pass through and right lateral is walked the flow that spool walks motor to right lateral and equated through left lateral, because left and right sides running motor discharge capacity equates, guarantee to operate simultaneously that left and right walking spool advances or when retreating, left and right sides running motor rotating speed is identical; The left and right sides speed of travel is identical, no matter advance simultaneously or retreat excavator simultaneously along straight line moving this moment.
But, when: operate simultaneously that left and right walking spool advances or when retreating, if other action 1 is arranged this moment to be operated, the fluid that pump 2 provides can be supplied left lateral simultaneously and walk and other action 1, walk few, the left motor rotary speed of flow that the flow-rate ratio of motor walks motor to right lateral to walk motor than right lateral slow to left lateral, the left and right sides speed of travel is inequality, and excavator can be along straight line moving.
The utility model content
Technical problem to be solved in the utility model provides a kind of straight line moving mechanism that can make hydraulic crawler excavator keep the hydraulic crawler excavator of straight line moving.
A kind of straight line moving mechanism of hydraulic crawler excavator, comprise power source and two hydraulic pumps, walk spool with the left lateral that two hydraulic pumps are connected respectively and right lateral is walked spool, walk spool and right lateral with left lateral and walk that left lateral that spool is connected is walked motor and right lateral is walked motor, described left lateral is walked the left front in-line of spool and right front in-line that right lateral is walked spool is communicated with two inlets of the oil pressure equalizing valve that advances respectively, and two outlets of the described oil pressure equalizing valve that advances are walked motor and right lateral with described left lateral respectively and walked motor and be communicated with; Described left lateral is walked spool, and left back oil circuit and the right lateral of moving back walked the right back oil circuit that moves back of spool and is communicated with two inlets that retreat the oil pressure equalizing valve respectively, and described two outlets that retreat the oil pressure equalizing valve are walked motor and right lateral with described left lateral respectively and walked motor and be communicated with; Described left lateral is walked behind the flap valve of spool and right lateral is communicated with a balance oil pipe after walking the flap valve of spool.
Adopt the straight line moving mechanism of the hydraulic crawler excavator of technique scheme, advance the oil pressure equalizing valve and retreat the oil pressure equalizing valve to being equipped with between running motor at the walking spool, when left and right sides running motor advances simultaneously or retreat simultaneously, advance the oil pressure equalizing valve and retreat the oil pressure equalizing valve and can keep about the walk oil-out pressure of spool correspondence equal; Simultaneously after left lateral is walked the flap valve of spool and right lateral be communicated with a balance oil pipe two hydraulic pumps in parallel after walking the flap valve of spool, thereby keep the inlet oil pressure of two walking spools to equate; Because the hydraulic pump mouth pressure equates that downstream pressure equates simultaneously before the walking spool, left and right sides spool pressure reduction equates, the speed of valve core opening area decision left and right sides running motor, about walking valve core opening area equate, guarantee the straight line moving of hydraulic crawler excavator.When left and right sides running motor advances simultaneously or retreats simultaneously, and when having all the other actions and since about walking spool pressure reduction equate that all the time excavator is still along straight line moving.
The mechanism principle of this straight line moving is simple, and is easy to operate, and dependable performance, and cost performance height can realize excavator straight line moving function by using this device to remove.
In sum, the utility model is that a kind of hydraulic crawler excavator that can make keeps straight line moving and principle simple, easy to operate, dependable performance, the straight line moving mechanism of the hydraulic crawler excavator that cost performance is high.
Description of drawings
The utility model is described in further detail below in conjunction with these the drawings and specific embodiments.
Accompanying drawing is the utility model structural representation.
The specific embodiment
Referring to accompanying drawing, power source 8 drives left hydraulic pump 6 and right hydraulic pump 7, left side hydraulic pump 6 is connected respectively with right hydraulic pump 7 that left lateral is walked spool 11 and right lateral is walked spool 5, left lateral is walked behind the flap valve of spool 11 and right lateral is communicated with a balance oil pipe 9 after walking the flap valve of spool 5, left lateral is walked the left front in-line of spool 11 and right front in-line that right lateral is walked spool 5 is communicated with two inlets of the oil pressure equalizing valve 1 that advances respectively, and two outlets of the oil pressure equalizing valve 1 that advances are walked motor 2 and right lateral with left lateral respectively and walked motor 3 and be communicated with; Left lateral is walked spool 11, and left back oil circuit and the right lateral of moving back walked the right back oil circuit that moves back of spool 5 and is communicated with two inlets that retreat oil pressure equalizing valve 4 respectively, and two outlets that retreat oil pressure equalizing valve 4 are walked motor 2 and right lateral with left lateral respectively and walked motor 3 and be communicated with.In hydraulic circuit, also be connected with other action control valves 10.
Referring to accompanying drawing, when hydraulic crawler excavator advances walking, power source 8 drives left hydraulic pump 6 and right hydraulic pump 7, left side hydraulic pump 6 is connected respectively with right hydraulic pump 7 that left lateral is walked spool 11 and right lateral is walked spool 5, left lateral is walked behind the flap valve of spool 11 and right lateral is communicated with a balance oil pipe 9 after walking the flap valve of spool 5, balance oil pipe 9 can guarantee that left lateral walks spool 11 and right lateral and walk the inlet oil pressure of spool 5 and equate, left lateral is walked the left front in-line of spool 11 and right front in-line that right lateral is walked spool 5 is communicated with two inlets of the oil pressure equalizing valve 1 that advances respectively, and two outlets of the oil pressure equalizing valve 1 that advances are walked motor 2 and right lateral with left lateral respectively and walked motor 3 and be communicated with; The oil pressure equalizing valve 1 that advances can keep its outlet oil pressure to equate, walks motor 2 and right lateral and walks the oil pressure that advances of motor 3 and equate thereby enter into left lateral, just can guarantee that the straight ahead of hydraulic crawler excavator is walked.
Referring to accompanying drawing, when hydraulic crawler excavator retreats walking, power source 8 drives left hydraulic pump 6 and right hydraulic pump 7, left side hydraulic pump 6 is connected respectively with right hydraulic pump 7 that left lateral is walked spool 11 and right lateral is walked spool 5, left lateral is walked behind the flap valve of spool 11 and right lateral is communicated with a balance oil pipe 9 after walking the flap valve of spool 5, balance oil pipe 9 can guarantee that left lateral walks spool 11 and right lateral and walk the inlet oil pressure of spool 5 and equate, left lateral is walked spool 11, and left back oil circuit and the right lateral of moving back walked the right back oil circuit that moves back of spool 5 and is communicated with two inlets that retreat oil pressure equalizing valve 4 respectively, two outlets that retreat oil pressure equalizing valve 4 are walked motor 2 and right lateral with left lateral respectively and are walked motor 3 and be communicated with, retreating oil pressure equalizing valve 4 can keep its outlet oil pressure to equate, walk motor 2 and right lateral and walk the oil pressure that retreats of motor 3 and equate thereby enter into left lateral, just can guarantee that the straight line of hydraulic crawler excavator retreats walking.
When hydraulic crawler excavator during along straight line moving, if carry out other action as swing arm, dipper, revolution simultaneously or other moves, though the part fluid of hydraulic pump supply can offer the work clothes system of action, excavator still can keep the state along straight line moving.
Claims (2)
1. the straight line moving mechanism of a hydraulic crawler excavator, comprise power source (8) and a hydraulic pump, the left lateral that is connected with hydraulic pump walks spool (11) and right lateral is walked spool (5), walk spool (11) and right lateral with left lateral and walk that left lateral that spool (5) is connected is walked motor (2) and right lateral is walked motor (3), it is characterized in that: described left lateral is walked the left front in-line of spool (11) and right front in-line that right lateral is walked spool (5) is communicated with two inlets of the oil pressure equalizing valve (1) that advances respectively, and two outlets of the described oil pressure equalizing valve (1) that advances are walked motor (2) and right lateral with described left lateral respectively and walked motor (3) and be communicated with; Described left lateral is walked spool (11), and left back oil circuit and the right lateral of moving back walked the right back oil circuit that moves back of spool (5) and is communicated with two inlets that retreat oil pressure equalizing valve (4) respectively, and described two outlets that retreat oil pressure equalizing valve (4) are walked motor (2) and right lateral with described left lateral respectively and walked motor (3) and be communicated with.
2. the straight line moving mechanism of a hydraulic crawler excavator, comprise power source (8) and two hydraulic pumps, walk spool (11) with the left lateral that two hydraulic pumps are connected respectively and right lateral is walked spool (5), walk spool (11) and right lateral with left lateral and walk that left lateral that spool (5) is connected is walked motor (2) and right lateral is walked motor (3), it is characterized in that: described left lateral is walked the left front in-line of spool (11) and right front in-line that right lateral is walked spool (5) is communicated with two inlets of the oil pressure equalizing valve (1) that advances respectively, and two outlets of the described oil pressure equalizing valve (1) that advances are walked motor (2) and right lateral with described left lateral respectively and walked motor (3) and be communicated with; Described left lateral is walked spool (11), and left back oil circuit and the right lateral of moving back walked the right back oil circuit that moves back of spool (5) and is communicated with two inlets that retreat oil pressure equalizing valve (4) respectively, and described two outlets that retreat oil pressure equalizing valve (4) are walked motor (2) and right lateral with described left lateral respectively and walked motor (3) and be communicated with; Described left lateral is walked behind the flap valve of spool (11) and right lateral is communicated with a balance oil pipe (9) after walking the flap valve of spool (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200627564U CN201010925Y (en) | 2007-03-22 | 2007-03-22 | Straight walking mechanism of hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200627564U CN201010925Y (en) | 2007-03-22 | 2007-03-22 | Straight walking mechanism of hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201010925Y true CN201010925Y (en) | 2008-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200627564U Expired - Fee Related CN201010925Y (en) | 2007-03-22 | 2007-03-22 | Straight walking mechanism of hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201010925Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828540A (en) * | 2012-08-22 | 2012-12-19 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
| CN102888873A (en) * | 2012-09-12 | 2013-01-23 | 徐州徐工挖掘机械有限公司 | Device for improving linear running performance of excavator during compound action |
| CN103597218A (en) * | 2011-06-09 | 2014-02-19 | 沃尔沃建造设备有限公司 | Hydraulic system for construction machinery |
| CN103806496A (en) * | 2014-01-22 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic control system |
| CN103806498A (en) * | 2014-02-21 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic system |
| CN104533881A (en) * | 2014-12-04 | 2015-04-22 | 上海中联重科桩工机械有限公司 | System and method for judging walking deviation reason of engineering machinery |
| CN106468294A (en) * | 2015-08-19 | 2017-03-01 | 徐工集团工程机械股份有限公司 | Straight line moving control valve, straight line moving control system and excavator |
| CN111594504A (en) * | 2020-05-26 | 2020-08-28 | 柳州柳工挖掘机有限公司 | Balance valve for traveling motor and crawler excavator |
-
2007
- 2007-03-22 CN CNU2007200627564U patent/CN201010925Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103597218A (en) * | 2011-06-09 | 2014-02-19 | 沃尔沃建造设备有限公司 | Hydraulic system for construction machinery |
| CN103597218B (en) * | 2011-06-09 | 2016-04-06 | 沃尔沃建造设备有限公司 | For the hydraulic system of engineering machinery |
| CN102828540A (en) * | 2012-08-22 | 2012-12-19 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
| CN102828540B (en) * | 2012-08-22 | 2014-10-22 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
| CN102888873B (en) * | 2012-09-12 | 2015-03-11 | 徐州徐工挖掘机械有限公司 | Device for improving linear running performance of excavator during compound action |
| CN102888873A (en) * | 2012-09-12 | 2013-01-23 | 徐州徐工挖掘机械有限公司 | Device for improving linear running performance of excavator during compound action |
| CN103806496A (en) * | 2014-01-22 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic control system |
| CN103806496B (en) * | 2014-01-22 | 2016-07-06 | 柳州柳工液压件有限公司 | excavator hydraulic control system |
| CN103806498A (en) * | 2014-02-21 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic system |
| CN103806498B (en) * | 2014-02-21 | 2016-05-04 | 柳州柳工液压件有限公司 | Excavator hydraulic system |
| CN104533881A (en) * | 2014-12-04 | 2015-04-22 | 上海中联重科桩工机械有限公司 | System and method for judging walking deviation reason of engineering machinery |
| CN106468294A (en) * | 2015-08-19 | 2017-03-01 | 徐工集团工程机械股份有限公司 | Straight line moving control valve, straight line moving control system and excavator |
| CN106468294B (en) * | 2015-08-19 | 2018-03-13 | 徐工集团工程机械股份有限公司 | Straight line moving control valve, straight line moving control system and excavator |
| CN111594504A (en) * | 2020-05-26 | 2020-08-28 | 柳州柳工挖掘机有限公司 | Balance valve for traveling motor and crawler excavator |
| CN111594504B (en) * | 2020-05-26 | 2022-05-17 | 柳州柳工挖掘机有限公司 | Balance valve for traveling motor and crawler excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20140322 |