CN201932890U - Leveling and controlling device for operation bucket - Google Patents
Leveling and controlling device for operation bucket Download PDFInfo
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- CN201932890U CN201932890U CN2011200337731U CN201120033773U CN201932890U CN 201932890 U CN201932890 U CN 201932890U CN 2011200337731 U CN2011200337731 U CN 2011200337731U CN 201120033773 U CN201120033773 U CN 201120033773U CN 201932890 U CN201932890 U CN 201932890U
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- work bucket
- bucket leveling
- valve piece
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Abstract
A leveling and controlling device for an operation bucket comprises an operation bucket leveling valve (1), an arm frame operational valve (2) and a variable pump (3). An oil inlet branch (11) of the operation bucket leveling valve (1) and an oil inlet branch (21) of the arm frame operational valve (2) are connected to an oil supply way (31) of the variable pump (3) in series. The leveling and controlling device further comprises a reducing valve (4) and a first shuttle valve (5), the reducing valve is connected to the oil inlet branch of the operation bucket leveling valve in series, two inlets of the first shuttle valve are respectively connected to a feedback port (2LS) of the arm frame operational valve and an outlet pipeline of the reducing valve, and an outlet of the first shuttle valve is connected to a controlling port (32) of the variable pump. Since the reducing valve is connected to the oil inlet branch of the operation bucket leveling valve in series, and a larger value is fed back to the variable pump after the pressure is compared with the pressure fed back by the feedback port of the arm frame operational valve through the shuttle valve, the pressure needed by operation bucket leveling and the pressure needed by arm frame movement can be simultaneously and constantly provided by oil supply pressure of the variable pump.
Description
Technical field
The utility model relates to a kind of work bucket leveling control setup, for example the work bucket leveling control setup of band such as fire fighting turnable ladder or aerial platform work bucket Operation Van.
Background technology
In the Operation Van of band work buckets such as fire fighting turnable ladder or aerial platform, the work bucket is arranged on the jib, actions such as flexible, the revolution by jib operating valve piece control jib, luffing make the work bucket be positioned at suitable position, so that the staff of work in struggling against carries out operation.In the course of action such as luffing of jib, the work bucket needs the level of maintenance constantly, and this realizes by work bucket leveling control setup usually.
Existing work bucket leveling control setup generally includes work bucket leveling valve piece, jib operating valve piece, get on or off the bus change-over valve and controllable capacity pump, and the oil-feed branch road of work bucket leveling valve piece and the oil-feed branch road of jib operating valve piece are parallel-connected on the oil feeding line of described controllable capacity pump.The feedback port of bucket leveling valve piece is connected with the control mouth of controllable capacity pump if will work, in other words, just the feedback port by jib operating valve piece feeds back to controllable capacity pump and comes the pressure of controllable capacity pump is regulated, that is, the pressure of controllable capacity pump only satisfies the pressure requirement of jib operating valve piece.This is feasible under most of situation, because the required pressure of work bucket leveling is operated required pressure less than jib usually.But in some cases, for example operate under operating mode at some luffing of jib, the required pressure of work bucket leveling can be operated required pressure greater than jib, and therefore, impassabitity jib operating valve piece directly feeds back to controllable capacity pump and controls.In order to address the above problem, in some prior art, controllable capacity pump is directly by getting on or off the bus change-over valve place feedback, but this scheme will cause system works pressure can not follow actual condition and change, and work but be in high pressure under always.Like this, just cause that system's hydraulic pressure element heating, degradation of energy are big, the Hydraulic Elements wearing and tearing are very fast.
The utility model content
The purpose of this utility model is to provide a kind of work bucket leveling control setup that can both successfully carry out leveling under any operating mode.
To achieve these goals, the utility model provides a kind of work bucket leveling control setup, this device comprises work bucket leveling valve piece, jib operating valve piece and controllable capacity pump, the oil-feed branch road of described work bucket leveling valve piece and the oil-feed branch road of described jib operating valve piece are parallel-connected on the oil feeding line of described controllable capacity pump, wherein, this device also comprises the reducing valve and first shuttle valve, described reducing valve is serially connected on the oil-feed branch road of described work bucket leveling valve piece, two inlets of described first shuttle valve are connected on the feedback port of described jib operating valve piece separately and on the export pipeline of described reducing valve, the outlet of described first shuttle valve is connected to the control mouth of described controllable capacity pump.
Preferably, described reducing valve is a fixed pressure reducing valve.
Preferably, described reducing valve is the overflow type reducing valve.
Preferably, this work bucket leveling control setup also comprises by pass valve, and this by pass valve is other to be connected on the export pipeline of described reducing valve, and between the inlet of the outlet of described reducing valve and described first shuttle valve.
Preferably, this work bucket leveling control setup also comprises change-over valve, and this change-over valve is connected in series on the oil-feed branch road of described work bucket leveling valve piece.
Preferably, described change-over valve is a solenoid directional control valve.
Preferably, first check valve and/or second check valve that this work bucket leveling control setup also comprises, described first check valve allows the pressure hydraulic fluid port of hydraulic oil flow to described work bucket leveling valve piece, and described second check valve allows hydraulic oil to flow back to fuel tank from the return opening of described work bucket leveling valve piece.
Preferably, this work bucket leveling control setup also comprises get on or off the bus the change-over valve piece and second shuttle valve, the oil-feed branch road of described work bucket leveling valve piece and the oil-feed branch road of described jib operating valve piece are parallel-connected to first actuator port of the described change-over valve piece of getting on or off the bus, the oil return branch road of described work bucket leveling valve piece and the oil return branch road of described jib operating valve piece are parallel-connected to second actuator port of the described change-over valve piece of getting on or off the bus, the oil feeding line of described controllable capacity pump is connected on the pressure hydraulic fluid port of the described change-over valve piece of getting on or off the bus, the outlet of described first shuttle valve and described feedback port of getting on or off the bus the change-over valve piece are connected on two inlets of described second shuttle valve, and the outlet of described second shuttle valve is connected on the control mouth of described controllable capacity pump.
In above-mentioned work bucket leveling control setup, by on the oil-feed branch road of work bucket leveling valve piece, being connected in series reducing valve, and the post-decompression pressure of reducing valve can be set at and satisfy the required pressure of bucket leveling of working under any operating mode, get higher value after the pressure of the feedback port of this pressure and jib operating valve piece feedback compared by shuttle valve and feed back to controllable capacity pump, thereby make the charge oil pressure of controllable capacity pump can satisfy required pressure of work bucket leveling and the required pressure of jib action all the time simultaneously.And in above-mentioned work bucket leveling control setup, system works pressure can change with actual condition, and overall work pressure is lower, and resolution system Hydraulic Elements heating effectively, degradation of energy are big, Hydraulic Elements wear and tear problem faster.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification sheets, is used from explanation the utility model with the following specific embodiment one, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic block diagram according to the work bucket leveling control setup of a kind of embodiment of the present utility model;
Fig. 2 is the schematic block diagram according to the work bucket leveling control setup of another kind of embodiment of the present utility model;
Fig. 3 is the schematic block diagram according to the work bucket leveling control setup of also a kind of embodiment of the present utility model.
Description of reference numerals
1 work bucket leveling valve piece, 2 jib operating valve pieces
3 controllable capacity pumps, 4 reducing valves
The oil-feed branch road of 5 first shuttle valves, 11 work bucket leveling valve pieces
The oil feeding line of oil-feed branch road 31 controllable capacity pumps of 21 jib operating valve pieces
The control mouth of feedback port 32 controllable capacity pumps of 2LS jib operating valve piece
6 change-over valves, 7 first check valves
The pressure hydraulic fluid port of 8 second check valve 1P work bucket leveling valve piece
The return opening 9 of the 1T work bucket leveling valve piece change-over valve piece of getting on or off the bus
10 second shuttle valves
Get on or off the bus first actuator port of change-over valve piece of 9A
Get on or off the bus second actuator port of change-over valve piece of 9B
The get on or off the bus pressure hydraulic fluid port of change-over valve piece of 9P
The get on or off the bus feedback port of change-over valve piece of 9LS
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As shown in Figure 1, a kind of embodiment of the present utility model provides a kind of work bucket leveling control setup, this device comprises work bucket leveling valve piece 1, jib operating valve piece 2 and controllable capacity pump 3, the oil-feed branch road 11 of described work bucket leveling valve piece 1 and the oil-feed branch road 21 of described jib operating valve piece 2 are parallel-connected on the oil feeding line 31 of described controllable capacity pump 3, wherein, this leveling control setup also comprises the reducing valve 4 and first shuttle valve 5, described reducing valve 4 is serially connected on the oil-feed branch road 11 of described work bucket leveling valve piece 1, the feedback port 2LS that two inlets of described first shuttle valve 5 are connected to described jib operating valve piece 2 separately go up and the export pipeline of described reducing valve 4 on, the outlet of described first shuttle valve 5 is connected to the control mouth 32 of described controllable capacity pump 3.Described jib operating valve piece 2 is used to control the action of jib, for example, and flexible, the revolution of jib, luffing action.
In above-mentioned work bucket leveling control setup, by serial connection reducing valve 4 on the oil-feed branch road 11 of work bucket leveling valve piece 1, and reducing valve 4 post-decompression pressure can be set at and satisfy the required pressure of bucket leveling of working under any operating mode, get higher value after the pressure of the feedback port 2LS of this pressure and jib operating valve piece 2 feedback compared by first shuttle valve 5 and feed back to controllable capacity pump 3, thereby make the charge oil pressure of controllable capacity pump 3 can satisfy required pressure of work bucket leveling and the required pressure of jib action all the time simultaneously.And in above-mentioned work bucket leveling control setup, system works pressure can change with actual condition, and overall work pressure is lower, and resolution system Hydraulic Elements heating effectively, degradation of energy are big, Hydraulic Elements wear and tear problem faster.
Typically refer to the controllable capacity pump 3 that carries control unit at the controllable capacity pump 3 described in the application's the context, promptly the control unit of this controllable capacity pump can come according to the control signal that its feedback port receives the control variable pump oil feeding line on pressure.This controllable capacity pump is well known in the art, for example can adopt the controllable capacity pump of the JR-R-075C-LS model of Danfoss company production, therefore repeats no more at this concrete structure to the control unit of this controllable capacity pump and this controllable capacity pump.
In above-mentioned work bucket leveling control setup, the working hole of work bucket leveling valve piece 1 can be connected with work bucket levelling gear (the bucket leveling cyclinder of for example working), to carry out work bucket leveling operation.
In above-mentioned work bucket leveling control setup, reducing valve 4 is mainly used in to make to be set at through this reducing valve 4 post-decompression pressure and can satisfies the bucket leveling required pressure of working under any operating mode, therefore this reducing valve 4 is preferably fixed pressure reducing valve, thus setting pressure exactly.More preferably, this reducing valve 4 is the overflow type reducing valve, more preferably is the overflow type fixed pressure reducing valve, so that setting pressure more exactly.Yet, it will be appreciated by persons skilled in the art that described reducing valve 4 also can adopt the reducing valve of the other types except fixed pressure reducing valve, for example under some operating mode, adopt proportional pressure-reducing valve can guarantee that also through post-decompression pressure be setting pressure.
Preferably, work bucket leveling control setup can also comprise the by pass valve (not shown), and this by pass valve is other to be connected on the export pipeline of described reducing valve 4, and between the inlet of the outlet of described reducing valve 4 and described first shuttle valve 5.For example under some extreme operating condition, may exceed setting pressure by reducing valve 4 post-decompression oil circuit pressure, at this moment can guarantee further that by by pass valve the pressure of the entrance of first shuttle valve 5 is setting pressure, thereby make work bucket leveling control setup more successfully to work.
Preferably, as shown in Figure 2, work bucket leveling control setup can also comprise change-over valve 6, and this change-over valve 6 is serially connected on the oil-feed branch road 11 of described work bucket leveling valve piece 1, and preferably, this reducing valve 4 is located at before the change-over valve 6, and promptly hydraulic oil is earlier by reducing valve 4.Can open or close the feedback of work bucket leveling oil circuit as required by this change-over valve 6 to controllable capacity pump 3.This change-over valve 6 can adopt various types of change-over valves, and for example solenoid directional control valve more specifically, is illustrated in figure 2 as the two-bit triplet solenoid directional control valve.
Preferably, as shown in Figure 1 to Figure 3, work bucket leveling control setup can also comprise first check valve 7 and/or second check valve 8, described first check valve 7 allows the pressure hydraulic fluid port 1P of hydraulic oil flow to described work bucket leveling valve piece 1, and described second check valve 8 allows hydraulic oil to flow back to fuel tank from the return opening 1T of described work bucket leveling valve piece 1.This first check valve 7 and/or second check valve 8 can prevent the oil-feed branch road 11 of work bucket leveling valve piece 1 and the hydraulic oil flow sky in the oil return branch road 12, thereby can make that work bucket leveling work is responded fast, prevent to impact and hysteresis phenomenon.
In construction machinery and equipments such as fire fighting turnable ladder or aerial platform, all have the change-over valve of getting on or off the bus piece usually, with switch operating between last dress and supporting leg, guarantee the safety of operation of construction machinery and equipment.Therefore, as shown in Figure 3, work bucket leveling control setup can also comprise get on or off the bus the change-over valve piece 9 and second shuttle valve 10, the oil-feed branch road 11 of described work bucket leveling valve piece 1 and the oil-feed branch road 21 of described jib operating valve piece 2 are parallel-connected to the first actuator port 9A of the described change-over valve piece 9 of getting on or off the bus, the oil return branch road 12 of described work bucket leveling valve piece 1 and the oil return branch road 22 of described jib operating valve piece 2 are parallel-connected to the second actuator port 9B of the described change-over valve piece 9 of getting on or off the bus, the oil feeding line 31 of described controllable capacity pump 3 is connected on the pressure hydraulic fluid port 9P of the described change-over valve piece 9 of getting on or off the bus, the outlet of described first shuttle valve 5 and the described feedback port 9LS that gets on or off the bus change-over valve piece 9 are connected on two inlets of described second shuttle valve 10, and the outlet of described second shuttle valve 10 is connected on the control mouth 32 of described controllable capacity pump 3.Certainly, the described change-over valve piece 9 of getting on or off the bus also is connected with the supporting leg loop of getting off, about the structure in the supporting leg loop of getting off be well known in the art and and the technical solution of the utility model irrelevant, do not repeat them here.Be understandable that, when going up of construction machinery and equipment put into line operate, during operations such as for example jib stretches, revolution or luffing, the supporting leg of getting off locking, the feedback pressure of feedback port 9LS of change-over valve piece 9 of getting on or off the bus this moment is always zero, and therefore second shuttle valve 10 pressure that exports the control mouth 32 of controllable capacity pump 3 to is always the pressure of the outlet of described first shuttle valve 5.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up by any suitable manner, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. work bucket leveling control setup, this device comprises work bucket leveling valve piece (1), jib operating valve piece (2) and controllable capacity pump (3), the oil-feed branch road (11) of described work bucket leveling valve piece (1) and the oil-feed branch road (21) of described jib operating valve piece (2) are parallel-connected on the oil feeding line (31) of described controllable capacity pump (3), it is characterized in that
This device also comprises reducing valve (4) and first shuttle valve (5), described reducing valve (4) is serially connected on the oil-feed branch road (11) of described work bucket leveling valve piece (1), the feedback port (2LS) that two inlets of described first shuttle valve (5) are connected to described jib operating valve piece (2) separately go up and the export pipeline of described reducing valve (4) on, the outlet of described first shuttle valve (5) is connected to the control mouth (32) of described controllable capacity pump.
2. work bucket leveling control setup according to claim 1 is characterized in that described reducing valve (4) is a fixed pressure reducing valve.
3. work bucket leveling control setup according to claim 1 and 2 is characterized in that described reducing valve (4) is the overflow type reducing valve.
4. work bucket leveling control setup according to claim 1, it is characterized in that, this device also comprises by pass valve, and this by pass valve is other to be connected on the export pipeline of described reducing valve (4), and is positioned between the inlet of the outlet of described reducing valve (4) and described first shuttle valve (5).
5. according to claim 1 or 4 described work bucket leveling control setups, it is characterized in that this device also comprises change-over valve (6), this change-over valve (6) is serially connected on the oil-feed branch road (11) of described work bucket leveling valve piece (1).
6. work bucket leveling control setup according to claim 5 is characterized in that described change-over valve (6) is a solenoid directional control valve.
7. work bucket leveling control setup according to claim 5, it is characterized in that, this device also comprises first check valve (7) and/or second check valve (8), described first check valve (7) allows the pressure hydraulic fluid port (1P) of hydraulic oil flow to described work bucket leveling valve piece (1), and described second check valve (8) allows hydraulic oil to flow back to fuel tank from the return opening (1T) of described work bucket leveling valve piece (1).
8. work bucket leveling control setup according to claim 5, it is characterized in that, this device also comprises get on or off the bus change-over valve piece (9) and second shuttle valve (10), the oil-feed branch road (11) of described work bucket leveling valve piece (1) and the oil-feed branch road (21) of described jib operating valve piece (2) are parallel-connected to first actuator port (9A) of the described change-over valve piece (9) of getting on or off the bus, the oil return branch road (12) of described work bucket leveling valve piece (1) and the oil return branch road (22) of described jib operating valve piece (2) are parallel-connected to second actuator port (9B) of the described change-over valve piece (9) of getting on or off the bus, the oil feeding line (31) of described controllable capacity pump (3) is connected on the pressure hydraulic fluid port (9P) of the described change-over valve piece (9) of getting on or off the bus, the feedback port (9LS) of the outlet of described first shuttle valve (5) and described change-over valve piece (9) of getting on or off the bus is connected on two inlets of described second shuttle valve (10), and the outlet of described second shuttle valve (10) is connected on the control mouth (32) of described controllable capacity pump (3).
9. according to claim 1 or 4 described work bucket leveling control setups, it is characterized in that, this device also comprises first check valve (7) and/or second check valve (8), described first check valve (7) allows the pressure hydraulic fluid port (1P) of hydraulic oil flow to described work bucket leveling valve piece (1), and described second check valve (8) allows hydraulic oil to flow back to fuel tank from the return opening (1T) of described work bucket leveling valve piece (1).
10. according to claim 1 or 4 described work bucket leveling control setups, it is characterized in that, this device also comprises get on or off the bus change-over valve piece (9) and second shuttle valve (10), the oil-feed branch road (11) of described work bucket leveling valve piece (1) and the oil-feed branch road (21) of described jib operating valve piece (2) are parallel-connected to first actuator port (9A) of the described change-over valve piece (9) of getting on or off the bus, the oil return branch road (12) of described work bucket leveling valve piece (1) and the oil return branch road (22) of described jib operating valve piece (2) are parallel-connected to second actuator port (9B) of the described change-over valve piece (9) of getting on or off the bus, the oil feeding line (31) of described controllable capacity pump (3) is connected on the pressure hydraulic fluid port (9P) of the described change-over valve piece (9) of getting on or off the bus, the feedback port (9LS) of the outlet of described first shuttle valve (5) and described change-over valve piece (9) of getting on or off the bus is connected on two inlets of described second shuttle valve (10), and the outlet of described second shuttle valve (10) is connected on the control mouth (32) of described controllable capacity pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200337731U CN201932890U (en) | 2011-01-30 | 2011-01-30 | Leveling and controlling device for operation bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200337731U CN201932890U (en) | 2011-01-30 | 2011-01-30 | Leveling and controlling device for operation bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201932890U true CN201932890U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200337731U Expired - Lifetime CN201932890U (en) | 2011-01-30 | 2011-01-30 | Leveling and controlling device for operation bucket |
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| CN (1) | CN201932890U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602856A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Leveling control method and leveling control system for working hopper of overhead working truck |
| CN102616707A (en) * | 2011-01-30 | 2012-08-01 | 长沙中联消防机械有限公司 | Work bucket leveling control device |
| CN102633215A (en) * | 2012-04-18 | 2012-08-15 | 中联重科股份有限公司 | Method, device and system for levelling working basket and engineering machinery |
| CN103032415A (en) * | 2012-12-24 | 2013-04-10 | 长沙中联消防机械有限公司 | Hydraulic device and engineering machinery |
| CN103603836A (en) * | 2013-11-28 | 2014-02-26 | 长沙中联消防机械有限公司 | Cage hydraulic control system and engineering vehicle |
| CN104863366A (en) * | 2014-12-04 | 2015-08-26 | 北汽福田汽车股份有限公司 | Arm frame control system of concrete pumping device |
-
2011
- 2011-01-30 CN CN2011200337731U patent/CN201932890U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616707A (en) * | 2011-01-30 | 2012-08-01 | 长沙中联消防机械有限公司 | Work bucket leveling control device |
| CN102616707B (en) * | 2011-01-30 | 2014-10-29 | 长沙中联消防机械有限公司 | Work bucket leveling control device |
| CN102602856A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Leveling control method and leveling control system for working hopper of overhead working truck |
| CN102602856B (en) * | 2012-03-14 | 2014-05-07 | 中联重科股份有限公司 | Leveling control method and leveling control system for working hopper of overhead working truck |
| CN102633215A (en) * | 2012-04-18 | 2012-08-15 | 中联重科股份有限公司 | Method, device and system for levelling working basket and engineering machinery |
| CN102633215B (en) * | 2012-04-18 | 2014-09-03 | 中联重科股份有限公司 | Method, device and system for levelling working basket and engineering machinery |
| CN103032415A (en) * | 2012-12-24 | 2013-04-10 | 长沙中联消防机械有限公司 | Hydraulic device and engineering machinery |
| CN103032415B (en) * | 2012-12-24 | 2015-05-20 | 长沙中联消防机械有限公司 | Hydraulic device and engineering machinery |
| CN103603836A (en) * | 2013-11-28 | 2014-02-26 | 长沙中联消防机械有限公司 | Cage hydraulic control system and engineering vehicle |
| CN103603836B (en) * | 2013-11-28 | 2015-11-25 | 长沙中联消防机械有限公司 | Cage hydraulic control system and engineering vehicle |
| CN104863366A (en) * | 2014-12-04 | 2015-08-26 | 北汽福田汽车股份有限公司 | Arm frame control system of concrete pumping device |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110817 Effective date of abandoning: 20141029 |
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| RGAV | Abandon patent right to avoid regrant |