CN201105952Y - Telescopic boom crane lift hook lifting compensating gear - Google Patents
Telescopic boom crane lift hook lifting compensating gear Download PDFInfo
- Publication number
- CN201105952Y CN201105952Y CNU2007200414784U CN200720041478U CN201105952Y CN 201105952 Y CN201105952 Y CN 201105952Y CN U2007200414784 U CNU2007200414784 U CN U2007200414784U CN 200720041478 U CN200720041478 U CN 200720041478U CN 201105952 Y CN201105952 Y CN 201105952Y
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Abstract
The utility model discloses a telescopic arm style crane hook lifting compensation device used in a telescopic arm style crane boom. A motor lifting control oil mouth of a liquid proportion control valve is communicated with a pressure oil output port of a first proportion pressure reducing valve. The motor falling control oil mouth of the liquid proportion control valve is communicated with a pressure oil output port of a second proportion pressure reducing valve. A bar-cavity control oil mouth of a liquid proportion control valve cylinder, a second pressure oil input port of the first proportion pressure reducing valve, a third pressure oil input port and a third pressure oil output port of a pilot control valve are communicated. A non-bar-cavity control oil mouth of the liquid proportion control valve cylinder, a second pressure oil input port of the second proportion pressure reducing valve, a third pressure oil input port and a fourth pressure oil output port of the pilot control valve are communicated. The hook can carry out compensation movement at the same time by only controlling the flexing of the boom, thus the distance between the hook and the head of the boom is kept unchanged; the improper operation can be reduced; the operation is simplified and the efficiency is enhanced.
Description
Technical field
The utility model relates to a kind of fluid control of telescopic boom crane hook lifting.
Background technology
The hoisting arm expansion of known telescopic boom hoisting crane and hook lifting (turned round realize by hoist motor) are two independently actions, are controlled respectively by two control handles.When carrying out hoisting arm expansion separately, because not motion of elevator, rope capacity is fixed, so along with the stretching out or withdraw of arm, the distance of suspension hook and arm head can correspondingly reduce or become greatly, may cause suspension hook to run into the arm head or fall earthward.In order to eliminate this hidden danger, will carry out the operation of hook lifting simultaneously, perhaps intermittently carry out this two kinds of operations, cause the operating sequence complexity, operating efficiency is very low.
Summary of the invention
The purpose of this utility model is that a kind of telescopic boom crane hook lifting compensating device will be provided, and this device can be simplified the operating sequence of hoisting arm expansion and hook lifting, improves operating efficiency.
The purpose of this utility model is achieved in that this device comprises hoist motor, telescopic oil cylinder, balance cock and pilot-actuated valve, the hoist motor of liquid proportional control cock is dropped into hydraulic fluid port and hoist motor and is risen and be serially connected with hoist motor and average valve between the oil inlet, be serially connected with telescopic oil cylinder and bidirectional balanced valve between the telescopic oil cylinder rodless cavity oil inlet of liquid proportional control cock and the telescopic oil cylinder rod chamber oil inlet, the hoist motor of liquid proportional control cock plays the control hydraulic fluid port and is connected with the pressure oil output oil port of first proportional pressure-reducing valve, the control port that falls of the hoist motor of liquid proportional control cock is connected with the pressure oil output oil port of second proportional pressure-reducing valve, the telescopic oil cylinder rod chamber control port of liquid proportional control cock, second pressure oil input hydraulic fluid port of first proportional pressure-reducing valve, the 3rd pressure oil input hydraulic fluid port of first proportional pressure-reducing valve and the 3rd pressure oil output oil port of pilot-actuated valve are connected, the telescopic oil cylinder rodless cavity control port of liquid proportional control cock, second pressure oil input hydraulic fluid port of second proportional pressure-reducing valve, the 3rd pressure oil input hydraulic fluid port of second proportional pressure-reducing valve and the 4th pressure oil output oil port of pilot-actuated valve are connected, first pressure oil input hydraulic fluid port of first proportional pressure-reducing valve, the first pressure oil output oil port of first pressure relay and pilot-actuated valve is connected, first pressure oil input hydraulic fluid port of second proportional pressure-reducing valve, the second pressure oil output oil port of second pressure relay and pilot-actuated valve is connected.
The utility model can be implemented in when only operating hoisting arm expansion, suspension hook compensates motion (suspension hook falls along with hoisting arm expansion is corresponding or rises) simultaneously, make the distance of suspension hook and arm head remain unchanged, can also reduce simultaneously the problem that causes owing to misoperation, as break phenomenons such as arm head pulley, disorder cable.The accident potential that both disappeared has simplified operating sequence again, has improved operating efficiency greatly.When operating hook lifting separately, arm can not influence normal hoisting operation along with motion.
Can a select switch be installed in Circuits System in addition, can select whether to carry out the suspension hook compensation.Because crane hoisting arm expansion must cooperate the action of hook lifting, so having changed, the utility model must operate these two actions or the both hands problem of operating simultaneously originally at interval, only need select the change-over switch of suspension hook compensation, operate the control that an action just can realize these two actions simultaneously.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of an embodiment of the utility model.
1. hoist motors among the figure, 2. telescopic oil cylinder, 3. liquid proportional control cock, 4-1. first proportional pressure-reducing valve, 4-2. second proportional pressure-reducing valve, 5. pilot-actuated valve, 6. first pressure relay, 7. second pressure relay, 8. balance cock, 9. bidirectional balanced valve.
The specific embodiment
In Fig. 1, the hoist motor of liquid proportional control cock 3 is dropped into hydraulic fluid port A1 and hoist motor and is risen and be serially connected with hoist motor 1 and average valve 8 between the oil inlet B1.Hoist motor is dropped into the input port A that hydraulic fluid port A1 connects balance cock 8, and the delivery port B of balance cock 8 connects the input port of hoist motor 8, and K is automation control port.Be serially connected with telescopic oil cylinder 2 and bidirectional balanced valve 9 between the telescopic oil cylinder rodless cavity oil inlet A2 of liquid proportional control cock 3 and the telescopic oil cylinder rod chamber oil inlet B2.
The hoist motor of liquid proportional control cock 3 plays control hydraulic fluid port a1 and is connected with the pressure oil output oil port A3 of the first proportional pressure-reducing valve 4-1, the hoist motor of the liquid proportional control cock 3 control port b1 that falls is connected with the pressure oil output oil port A4 of the second proportional pressure-reducing valve 4-2, and second pressure oil input hydraulic fluid port P3 of telescopic oil cylinder rod chamber control port a2, the first proportional pressure-reducing valve 4-1 of liquid proportional control cock 3, the 3rd pressure oil input hydraulic fluid port P4 of the first proportional pressure-reducing valve 4-1 and the 3rd pressure oil output oil port a4 of pilot-actuated valve 5 are connected.Second pressure oil input hydraulic fluid port P6 of telescopic oil cylinder rodless cavity control port b2, the second proportional pressure-reducing valve 4-2 of liquid proportional control cock 3, the 3rd pressure oil input hydraulic fluid port P7 of the second proportional pressure-reducing valve 4-2 and the 4th pressure oil output oil port b4 of pilot-actuated valve 5 are connected.
The first pressure oil output oil port a3 of first pressure oil input hydraulic fluid port P2, first pressure relay 6 and the pilot-actuated valve 5 of the first proportional pressure-reducing valve 4-1 is connected.The second pressure oil output oil port b3 of first pressure oil input hydraulic fluid port P5, second pressure relay 7 and the pilot-actuated valve 5 of the second proportional pressure-reducing valve 4-2 is connected.
C1 is No. 1 input hydraulic fluid port, and C2 is No. 1 output oil port, and V1 is No. 2 input hydraulic fluid ports, and V2 is No. 2 output oil ports.LS is the load feedback hydraulic fluid port.T is a return opening.P is the valve oil inlet.T1 is the return opening of pilot-actuated valve 5.P1 is the oil inlet of pilot-actuated valve 5.
Pilot-actuated valve 5 is by the motion of guide's oil circuit control liquid proportional control cock 3 spools, being in proportion of the size of control presssure and valve core opening; The running of the flexible and hoist motor 1 of liquid proportional control cock 3 control telescopic oil cylinders 2, the hydraulic fluid flow rate by liquid proportional control cock 3 and the speed of telescopic oil cylinder 2 or hoist motor 1 are proportional; Telescopic oil cylinder 2 drives arm and stretches; The running of hoist motor 1 realizes hook lifting; The second proportional pressure-reducing valve 4-2 guarantees that downstream pressure and upstream pressure keep certain proportion, guarantees that just the pressure of control liquid proportional control cock 3 flexible connection and the pressure of control liquid proportional control cock 3 elevators connection keep certain ratio; The first proportional pressure-reducing valve 4-1 realizes the communication or the cut-out of compensation oil circuit; Two pressure relayes 6,7 are used to detect the pressure of guide's oil circuit of controlling liquid proportional control cock 3 elevators connection.
Pilot-actuated valve 5 is a dual valve, and wherein elevator control connection is through first proportional pressure-reducing valve 4-1 control liquid proportional control cock, 3 elevators connection; Guide's oil circuit one road direct control liquid proportional control cock 3 flexible connection of extension and contraction control connection, another road guide's oil circuit in parallel through the second proportional pressure-reducing valve 4-2 and the first proportional pressure-reducing valve 4-1 after control liquid proportional control cock 3 elevators connection.Wherein the extension and contraction control of pilot-actuated valve 5 connection and elevator control connection can not be controlled liquid proportional control cock 3 elevators connection simultaneously, by first proportional pressure-reducing valve 4-1 realization switching between the two.We can see in conjunction with the accompanying drawings:
1. under the first proportional pressure-reducing valve 4-1 powering-off state, the guide's oil circuit between pilot-actuated valve 5 elevators control connection and the liquid proportional control cock 3 elevators connection is linked up, and the guide's oil circuit between pilot-actuated valve 5 extension and contraction control connection and the liquid proportional control cock 3 flexible connection disconnects.This moment, pilot-actuated valve 5 elevators control connection and pilot-actuated valve 5 extension and contraction control connection were controlled liquid proportional control cock 3 elevators connection and liquid proportional control cock 3 flexible connection respectively so, can not carry out the suspension hook compensation.
2. under the first proportional pressure-reducing valve 4-1 energising situation, the guide's oil circuit between pilot-actuated valve 5 elevators control connection and the liquid proportional control cock 3 elevators connection disconnects, and the guide's oil circuit between pilot-actuated valve 5 extension and contraction control connection and the liquid proportional control cock 3 elevators connection is linked up.Pilot-actuated valve 5 extension and contraction control connection is controlled liquid proportional control cock 3 flexible connection and liquid proportional control cock 3 elevators connection simultaneously at this moment, thereby realization can realize the action of hoisting arm expansion and hook lifting simultaneously when only handling pilot-actuated valve 5 extension and contraction control connection.Because there is speed difference in these two kinds of motions, so will mate its kinematic velocity, the distance of suspension hook and arm head remains unchanged in the time of could guaranteeing the suspension hook compensation.Calculate through overmatching, design the second proportional pressure-reducing valve 4-2 by the ratio value that calculates, make the second proportional pressure-reducing valve 4-2 downstream pressure and upstream pressure keep certain proportion, guarantee that just the pressure of control liquid proportional control cock 3 flexible connection and the pressure of control liquid proportional control cock 3 elevators connection keep certain ratio, the valve core opening size of liquid proportional control cock 3 flexible connection and liquid proportional control cock 3 elevators connection just keeps certain ratio so.After liquid proportional control cock 3, add one group of reducing valve then, get bigger pressure after pressure behind flexible connection of liquid proportional control cock 3 and the liquid proportional control cock 3 elevators connection compared, thereby guarantee that liquid proportional control cock 3 flexible connection and liquid proportional control cock 3 elevators join that valve is preceding to be equated with voltage drop value behind the valve.When before the valve with valve after voltage drop value when constant, its flow is only proportional with the openings of sizes of spool.So raise the flows maintenance certain ratio of connection by flexible connection of liquid proportional control cock 3 and liquid proportional control cock volume 3 this moment, thus the ratio that the speed of hoisting arm expansion and hook lifting is met design requirement.Just when individual operation pilot-actuated valve 5 extension and contraction control join, realized the action of hoisting arm expansion and hook lifting simultaneously, and the distance of suspension hook and arm head remains unchanged.
3. because under the first proportional pressure-reducing valve 4-1 energising situation, guide's oil circuits that pilot-actuated valve volume 5 is raised between control connection and the liquid proportional control cock 3 elevators connection disconnect, so elevator can not turn round when handling pilot-actuated valve 5 elevators control connection.For guaranteeing also to carry out normal lift heavy operation this moment, so add two pressure relayes on guide's oil circuit of control liquid proportional control cock 3 elevators connection, setting pressure is 5bar.When this oil circuit pressure during greater than 5bar, when promptly handling pilot-actuated valve 5 elevators control connection, first pressure relay 6 cuts off the circuit that leads to the first proportional pressure-reducing valve 4-1, and the first proportional pressure-reducing valve 4-1 resets, get back to the situation of the 1st description, can carry out normal lift heavy operation.
Claims (1)
1. telescopic boom crane hook lifting compensating device, this device comprises hoist motor, telescopic oil cylinder, balance cock and pilot-actuated valve, the hoist motor that it is characterized in that the liquid proportional control cock is dropped into hydraulic fluid port and hoist motor and is risen and be serially connected with hoist motor and average valve between the oil inlet, be serially connected with telescopic oil cylinder and bidirectional balanced valve between the telescopic oil cylinder rodless cavity oil inlet of liquid proportional control cock and the telescopic oil cylinder rod chamber oil inlet, the hoist motor of liquid proportional control cock plays the control hydraulic fluid port and is connected with the pressure oil output oil port of first proportional pressure-reducing valve, the control port that falls of the hoist motor of liquid proportional control cock is connected with the pressure oil output oil port of second proportional pressure-reducing valve, the telescopic oil cylinder rod chamber control port of liquid proportional control cock, second pressure oil input hydraulic fluid port of first proportional pressure-reducing valve, the 3rd pressure oil input hydraulic fluid port of first proportional pressure-reducing valve and the 3rd pressure oil output oil port of pilot-actuated valve are connected, the telescopic oil cylinder rodless cavity control port of liquid proportional control cock, second pressure oil input hydraulic fluid port of second proportional pressure-reducing valve, the 3rd pressure oil input hydraulic fluid port of second proportional pressure-reducing valve and the 4th pressure oil output oil port of pilot-actuated valve are connected, first pressure oil input hydraulic fluid port of first proportional pressure-reducing valve, the first pressure oil output oil port of first pressure relay and pilot-actuated valve is connected, first pressure oil input hydraulic fluid port of second proportional pressure-reducing valve, the second pressure oil output oil port of second pressure relay and pilot-actuated valve is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200414784U CN201105952Y (en) | 2007-08-08 | 2007-08-08 | Telescopic boom crane lift hook lifting compensating gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200414784U CN201105952Y (en) | 2007-08-08 | 2007-08-08 | Telescopic boom crane lift hook lifting compensating gear |
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| Publication Number | Publication Date |
|---|---|
| CN201105952Y true CN201105952Y (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200414784U Expired - Fee Related CN201105952Y (en) | 2007-08-08 | 2007-08-08 | Telescopic boom crane lift hook lifting compensating gear |
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| CN (1) | CN201105952Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167261A (en) * | 2010-02-26 | 2011-08-31 | 徐州重型机械有限公司 | Crane and hydraulic control system of single-cylinder bolt type telescopic mechanism of crane |
| CN101857174B (en) * | 2010-05-13 | 2012-07-18 | 卢宇 | Hydraulic system of mechanically operated triple pump |
| CN102701077A (en) * | 2012-06-21 | 2012-10-03 | 三一重工股份有限公司 | System and method for controlling position of lifting hook of crane, as well as crane |
| CN102942115A (en) * | 2012-09-20 | 2013-02-27 | 宁波凯荣船用机械有限公司 | Loading change control device and control method for marine hydraulic slewing crane |
| WO2013033884A1 (en) * | 2011-09-05 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment and hydraulic system thereof |
| CN103072896A (en) * | 2013-01-28 | 2013-05-01 | 徐州重型机械有限公司 | Split-type electric proportional pilot control valve and mobile crane |
| CN103697001A (en) * | 2013-12-16 | 2014-04-02 | 长沙中联消防机械有限公司 | Engineering machinery and hydraulic driving system thereof |
| CN104019066A (en) * | 2014-05-30 | 2014-09-03 | 武汉船用机械有限责任公司 | Hydraulic control system of ocean platform hoisting mechanism |
| CN104088829A (en) * | 2014-07-16 | 2014-10-08 | 中联重科股份有限公司 | Hydraulic system of engineering machinery and paver with hydraulic system |
| CN109356893A (en) * | 2018-10-11 | 2019-02-19 | 武汉船用机械有限责任公司 | The hydraulic control system of luffing loop wheel machine |
| CN109437019A (en) * | 2018-12-10 | 2019-03-08 | 中联重科股份有限公司 | Crane hook height control method and device and crane |
-
2007
- 2007-08-08 CN CNU2007200414784U patent/CN201105952Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167261A (en) * | 2010-02-26 | 2011-08-31 | 徐州重型机械有限公司 | Crane and hydraulic control system of single-cylinder bolt type telescopic mechanism of crane |
| CN102167261B (en) * | 2010-02-26 | 2012-10-10 | 徐州重型机械有限公司 | Crane and hydraulic control system of single-cylinder bolt type telescopic mechanism of crane |
| CN101857174B (en) * | 2010-05-13 | 2012-07-18 | 卢宇 | Hydraulic system of mechanically operated triple pump |
| WO2013033884A1 (en) * | 2011-09-05 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment and hydraulic system thereof |
| CN102701077A (en) * | 2012-06-21 | 2012-10-03 | 三一重工股份有限公司 | System and method for controlling position of lifting hook of crane, as well as crane |
| CN102701077B (en) * | 2012-06-21 | 2014-12-31 | 三一重工股份有限公司 | System and method for controlling position of lifting hook of crane, as well as crane |
| CN102942115B (en) * | 2012-09-20 | 2014-07-23 | 宁波凯荣船用机械有限公司 | Loading change control device and control method for marine hydraulic slewing crane |
| CN102942115A (en) * | 2012-09-20 | 2013-02-27 | 宁波凯荣船用机械有限公司 | Loading change control device and control method for marine hydraulic slewing crane |
| CN103072896A (en) * | 2013-01-28 | 2013-05-01 | 徐州重型机械有限公司 | Split-type electric proportional pilot control valve and mobile crane |
| CN103697001A (en) * | 2013-12-16 | 2014-04-02 | 长沙中联消防机械有限公司 | Engineering machinery and hydraulic driving system thereof |
| CN103697001B (en) * | 2013-12-16 | 2016-03-16 | 长沙中联消防机械有限公司 | Engineering machinery and hydraulic driving system thereof |
| CN104019066A (en) * | 2014-05-30 | 2014-09-03 | 武汉船用机械有限责任公司 | Hydraulic control system of ocean platform hoisting mechanism |
| CN104019066B (en) * | 2014-05-30 | 2015-12-30 | 武汉船用机械有限责任公司 | A kind of ocean platform lifting mechanism hydraulic control system |
| CN104088829A (en) * | 2014-07-16 | 2014-10-08 | 中联重科股份有限公司 | Hydraulic system of engineering machinery and paver with hydraulic system |
| CN104088829B (en) * | 2014-07-16 | 2016-02-10 | 中联重科股份有限公司 | Hydraulic system of engineering machinery and paver with hydraulic system |
| CN109356893A (en) * | 2018-10-11 | 2019-02-19 | 武汉船用机械有限责任公司 | The hydraulic control system of luffing loop wheel machine |
| CN109437019A (en) * | 2018-12-10 | 2019-03-08 | 中联重科股份有限公司 | Crane hook height control method and device and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20150808 |
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| EXPY | Termination of patent right or utility model |