CN203845742U - Control valve, hydraulic control system for hoisting brakes and crane - Google Patents
Control valve, hydraulic control system for hoisting brakes and crane Download PDFInfo
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- CN203845742U CN203845742U CN201320835627.XU CN201320835627U CN203845742U CN 203845742 U CN203845742 U CN 203845742U CN 201320835627 U CN201320835627 U CN 201320835627U CN 203845742 U CN203845742 U CN 203845742U
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- 239000012530 fluid Substances 0.000 claims description 136
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 98
- 239000010720 hydraulic oil Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model discloses a control valve for hoisting brakes, a hydraulic control system for the hoisting brakes and a crane. The control valve comprises a valve body. A first revering valve is integrated in the valve body, a first oil port, a second oil port and a third oil port are arranged on the outside of the valve body, the first oil port is used for being communicated with an external pressure oil passage with constant pressures, the second oil port is used for being communicated with a hydraulic oil tank, and the third oil port is used for being communicated with a control oil cylinder of the first hoisting brake; the first oil port is communicated with the third oil port when the first reversing valve is located at a first working position; the second oil port is communicated with the third oil port when the first reversing valve is located at a second working position. The control valve, the hydraulic control system and the crane have the advantages that the special oil ports and oil ducts which are communicate with the external oil passage with the constant pressures are arranged in the control valve, starting of the brakes can be controlled by the pressure oil passage with the constant pressures, pressures for controlling starting of the brakes are constant in the control mode, the pressures of the oil passage can be completely free of influence of loads, and accordingly hoisting and lifting shaking can be effectively relieved.
Description
Technical field
The utility model relates to technical field of hydraulic, particularly the hydraulic control system of a kind of control cock and hoist brake, hoisting crane.
Background technology
Hoist brake is a kind of device of realizing elevator braking for hoisting engineering machinery hoisting mechanism, its mainly control to its mode of operation by special control cock, can control the keying of drg by the keying of control cock, thereby realize hoisting and falling of hoisting mechanism.Introduce a kind of hydraulic control system of drg below.
Please refer to Fig. 1, Fig. 1 is the structure principle chart of a kind of control cock of typical hoist brake in prior art.
In prior art, the control cock inside of hoist brake comprises pilot operated directional control valve 1 ', shuttle valve 4 ', reducing valve 2 ' and check valve 3 ', two oil inlets of shuttle valve 4 ' are by the first hydraulic fluid port A ' and the second hydraulic fluid port B ' two hydraulic fluid ports of connecting fluid pressure motor respectively offered on valve body, and the oil outlet of shuttle valve 4 ' is communicated with the control port of pilot operated directional control valve 1 ' and the oil inlet of reducing valve 2 ' simultaneously; On valve body, be also provided with the 3rd hydraulic fluid port C ' and the 4th hydraulic fluid port D ', two hydraulic fluid ports are communicated with respectively the control oil cylinder of fuel tank and hoist brake.
Pilot operated directional control valve 1 ' has two mode of operations, four hydraulic fluid ports, be respectively the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port, the oil outlet of reducing valve 2 ' is communicated with the first actuator port of pilot operated directional control valve 1 ', the second actuator port is communicated with by check valve 3 ' the 3rd hydraulic fluid port C ' offering on valve body, the 4th hydraulic fluid port D ' on the valve body of the 4th actuator port connection control cock.
In the time that the pressure of the hydraulic oil from shuttle valve 4 ' oil outlet reaches certain numerical value, the spool of pilot operated directional control valve 1 ' is in the first control position, pilot operated directional control valve 1 ' will be communicated with outlet oil circuit and the 4th hydraulic fluid port D ' of reducing valve 2 ', thereby make to be flowed to by the 4th hydraulic fluid port D ' from the hydraulic oil of hoist motor the control oil cylinder of hoist brake, drg is opened, and elevator carries out rise work.When pilot operated directional control valve 1 ' is during in the second control position, the 4th hydraulic fluid port D ' of valve body is communicated with the 3rd hydraulic fluid port C ' by pilot operated directional control valve 1 ', and the hydraulic oil in hoist brake flows into fuel tank, thereby drg is in closed condition.
Can be found out by foregoing description, in prior art, opening of hoist brake is the load oil circuit realization by hoist motor, this oil circuit pressure is relevant to load, because load in work is that the moment is moving, therefore be there is to certain impact in load oil circuit, the pressure of load oil circuit is moment fluctuation, easily like this closes while opening while causing drg, causes elevator shake.
And, in the time that hoisting mechanism carries out secondary lifting operation, pilot operated directional control valve 1 ' under the effect of load oil circuit, commutate open rapider, short time inner motor may not set up enough pressure, cause lifting moment to be less than the load moment that weight produces, caused opening drg and can cause weight to produce double slide.
Therefore, how a kind of control cock is provided, this control cock can effectively be improved elevator jitter phenomenon, and solves hoisting mechanism secondary lifting and sliding phenomenon, is those skilled in that art's technical matterss urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is for providing hydraulic control system, the hoisting crane of a kind of control cock and hoist brake, and the hydraulic control system with this control cock can effectively be improved elevator jitter phenomenon and solve hoisting mechanism secondary lifting and sliding phenomenon when to hoist brake control.
For solving the problems of the technologies described above, the utility model provides a kind of control cock for hoist brake, comprises valve body, is integrated with the first change-over valve in described valve body, and described valve body outer setting has the first hydraulic fluid port, the second hydraulic fluid port and the 3rd hydraulic fluid port;
Described the first hydraulic fluid port, for being communicated with the constant pressure oil circuit of external pressure;
Described the second hydraulic fluid port, for being communicated with hydraulic reservoir;
Described the 3rd hydraulic fluid port, for being communicated with the control oil cylinder of the first hoist brake;
In the time that described the first change-over valve is positioned at the first control position, described the first hydraulic fluid port and described the 3rd hydraulic fluid port conducting; In the time that described the first change-over valve is positioned at the second control position, described the second hydraulic fluid port and described the 3rd hydraulic fluid port conducting.
Preferably, on the oil duct of described the first change-over valve and the 3rd hydraulic fluid port, be also integrated with damping or flow regulating valve.
Preferably, be also integrated with the second change-over valve in the valve body of described control cock, described valve body outer setting has the 6th hydraulic fluid port, and described the 6th hydraulic fluid port is communicated with the control oil cylinder of the second hoist brake;
In the time that described the second change-over valve is positioned at the first control position, described the first hydraulic fluid port and described the 6th hydraulic fluid port conducting; In the time that described the second change-over valve is positioned at the second control position, described the second hydraulic fluid port and described the 6th hydraulic fluid port conducting.
Preferably, being communicated with of described the second change-over valve and the 6th hydraulic fluid port is also integrated with damping or flow regulating valve on oil duct.
Preferably, described the first change-over valve and described the second change-over valve are hydraulicchange-over valve, and the control port of described the first change-over valve, described the second change-over valve is communicated with respectively the load oil circuit of the first hoist motor and the second hoist motor by the corresponding hydraulic fluid port of offering on described valve body.
Preferably, in the valve body of described control cock, be also integrated with the first shuttle valve, described valve body outside also has the 4th hydraulic fluid port and the 5th hydraulic fluid port, two oil inlets of described the first shuttle valve are communicated with import and the outlet of described the first hoist motor by described the 4th hydraulic fluid port, the 5th hydraulic fluid port respectively, and the control port of described the first change-over valve is communicated with the oil outlet of described the first shuttle valve.
Preferably, in the valve body of described control cock, be also integrated with the second shuttle valve, described valve body outside also has the 7th hydraulic fluid port and the 8th hydraulic fluid port, two oil inlets of described the second shuttle valve are communicated with import and the outlet of described the second hoist motor by described the 7th hydraulic fluid port, the 8th hydraulic fluid port respectively, and the control port of described the second change-over valve is communicated with the oil outlet of described the second shuttle valve.
Preferably, being communicated with of described the 3rd hydraulic fluid port, described the 6th hydraulic fluid port and described hydraulic reservoir is also integrated with check valve on oil circuit.
Preferably, the valve body outside of described control cock is also provided with for first of setting pressure detection part and detects hydraulic fluid port and the second detection hydraulic fluid port, and described first detects the connection oil circuit that hydraulic fluid port is communicated with described the first change-over valve and described the 3rd hydraulic fluid port; Described second detects the connection oil circuit that hydraulic fluid port is communicated with described the second change-over valve and described the 6th hydraulic fluid port.
In control cock in the utility model, be provided with hydraulic fluid port and the oil duct of the pressure oil circuit of the outside constant pressure of special connection, the unlatching of the pressure oil circuit control drg by constant pressure, with in prior art by compared with the unlatching of load oil circuit control drg, the pressure ratio of controlling drg unlatching in this mode is more constant, oil circuit pressure can not be subject to the impact of load completely, can effectively alleviate winding lifting jitter phenomenon.
And, the pressure those skilled in that art that control the pressure oil circuit of drg unlatching can rationally arrange pressure size by experience, comparing load oil circuit pressure can reduce greatly, can relatively extend the time that drg is opened like this, thereby HM Hydraulic Motor has time enough to reach certain moment of torsion, avoid weight in the time of secondary lifting, to produce downslide fault, increased the safety that hoisting mechanism hoists.
In addition, in the utility model, drg and balance cock, main valve utilize respectively different oil circuit control, and each oil circuit control is non-interference, can effectively avoid the bad elevator downslide causing of three's Performance Match, reversion fault.
The utility model also provides a kind of hydraulic control system of hoist brake, comprises hoist motor, controls the drg of hoist motor action and controls the control cock of drg braking work, and described control cock is the control cock described in above-mentioned any one.
The utility model also provides a kind of hydraulic control system of hoist brake, comprise hoist motor, control the drg of hoist motor action and control the control cock of drg braking work, also comprise the pressure oil circuit of constant pressure, described drg is opened by the pressure oil circuit of described constant pressure.
In addition, the utility model also provides a kind of hoisting crane, comprises hoisting mechanism and controls the hydraulic control system of described hoisting mechanism work, and described hydraulic control system is above-mentioned hydraulic control system.
Because hydraulic control system and the hoisting crane of hoist brake all have above-mentioned control cock, therefore hydraulic control system described in the utility model and hoisting crane also have the above-mentioned technique effect of control cock.
Brief description of the drawings
Fig. 1 is the structure principle chart of a kind of control cock of typical hoist brake in prior art;
Fig. 2 is the principle of work schematic diagram of control cock in the utility model the first embodiment;
Fig. 3 is the principle of work schematic diagram of control cock in the utility model the second embodiment;
Fig. 4 is the principle of work schematic diagram of control cock in the third embodiment of the utility model.
Wherein, in Fig. 1, the one-to-one relationship between Reference numeral and component names is as follows:
1 ' change-over valve, 2 ' reducing valve, 3 ' check valve, 4 ' shuttle valve, A ' the first hydraulic fluid port, B ' the second hydraulic fluid port, C ' the 3rd hydraulic fluid port, D ' the 4th hydraulic fluid port.
Wherein, in Fig. 2 to Fig. 4, the one-to-one relationship between Reference numeral and component names is as follows:
11 first change-over valves, 12 first shuttle valves, 13 filters, 15 check valves, 16 dampings, 17 flow regulating valve, 21 second change-over valves, 22 second shuttle valves, 30 first hoist motors, 31 second hoist motors, 40 first hoist brakes, 41 second hoist brakes, 51 first electric control reversing valves, 52 second electric control reversing valves, P the first hydraulic fluid port, T the second hydraulic fluid port, A3 the 3rd hydraulic fluid port, B1 the 4th hydraulic fluid port, A1 the 5th hydraulic fluid port, A4 the 6th hydraulic fluid port, A2 the 7th hydraulic fluid port, B2 the 8th hydraulic fluid port, MP3 first detects hydraulic fluid port, MP4 second detects hydraulic fluid port.
Detailed description of the invention
Core of the present utility model is for providing hydraulic control system, the hoisting crane of a kind of control cock and hoist brake, and the hydraulic control system with this control cock can effectively be avoided elevator jitter phenomenon when to hoist brake control.
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2, Fig. 2 is the principle of work schematic diagram of control cock in the utility model the first embodiment.
The utility model provides a kind of control cock for hoist brake, comprises valve body, is integrated with the first change-over valve 11 in valve body, and valve body outer setting has the first hydraulic fluid port P, the second hydraulic fluid port T and the 3rd hydraulic fluid port A3; The first hydraulic fluid port P, for being communicated with the constant pressure oil circuit of external pressure, the pressure of this pressure oil circuit can be 3MPa; The second hydraulic fluid port T, for being communicated with hydraulic reservoir; The 3rd hydraulic fluid port A3, for being communicated with the control oil cylinder of the first hoist brake 40; In the time that the first change-over valve 11 is positioned at the first control position, the first hydraulic fluid port P and the 3rd hydraulic fluid port A3 conducting; In the time that the first change-over valve 11 is positioned at the second control position, the second hydraulic fluid port T and the 3rd hydraulic fluid port A3 conducting.
Control cock in the utility model is in the time controlling drg, in the time that the first change-over valve 11 is positioned at the first control position, the pressure oil circuit of constant pressure enters the control oil cylinder of drg by the inner oil duct of control cock, open drg, thereby realize the operating mode that hoists, falls of hoisting mechanism; When the first change-over valve 11 is during in the second control position, the path of the pressure oil circuit of constant pressure and the control oil cylinder of drg disconnects, hydraulic oil in the control oil cylinder of drg flows into hydraulic reservoir by the first change-over valve 11 and the second hydraulic fluid port T, and drg is in closed condition.
In control cock in the utility model, be provided with hydraulic fluid port and the oil duct of the pressure oil circuit of the outside constant pressure of special connection, the unlatching of the pressure oil circuit control drg by constant pressure, with in prior art by compared with the unlatching of load oil circuit control drg, the pressure ratio of controlling drg unlatching in this mode is more constant, oil circuit pressure can not be subject to the impact of load completely, can effectively alleviate winding lifting jitter phenomenon.
And, the pressure those skilled in that art that control the pressure oil circuit of drg unlatching can rationally arrange pressure size by experience, comparing load oil circuit pressure can reduce greatly, can relatively extend the time that drg is opened like this, thereby HM Hydraulic Motor has time enough to reach certain moment of torsion, avoid weight in the time of secondary lifting, to produce downslide fault, increased the safety that hoisting mechanism hoists.
In addition, in the utility model, the unlatching of drg is separately by the control of pressure oil circuit, and different from the oil circuit control of balance cock, main valve, two oil circuit controls are non-interference, can effectively avoid the bad elevator downslide causing of three's Performance Match, reversion fault.
Further, in the above-described embodiments, on the oil duct of the first change-over valve 11 and the 3rd hydraulic fluid port A3, can also be integrated with damping 16 or flow regulating valve 17, so further prolongation pressure oil circuit is opened the time of the control oil cylinder of drg, while ensureing drg unlatching, HM Hydraulic Motor has had enough moments of torsion, has further avoided weight secondary lifting to produce downslide phenomenon.
Certainly, flow regulating valve 17 also can be arranged at the outside of control cock, please refer to Fig. 3, and Fig. 3 has provided the fundamental diagram of the second detailed description of the invention of control cock.
In the various embodiments described above, can also be integrated with the second change-over valve 21 in the valve body of control cock, valve body outer setting has the 6th hydraulic fluid port A4, and the 6th hydraulic fluid port A4 is communicated with the control oil cylinder of the second hoist brake 41.
In the time that described the second change-over valve 21 is positioned at the first control position, described the first hydraulic fluid port P and described the 6th hydraulic fluid port A4 conducting; In the time that described the second change-over valve 21 is positioned at the second control position, described the second hydraulic fluid port T and the 6th hydraulic fluid port A4 conducting.
The first hoist brake 40 and the second hoist brake 41 can be respectively the drg of master winch mechanism and the drg of secondary hoisting mechanism on hoisting crane, the control cock of the drg of two hoisting mechanisms is combined in to a valve inner, can be opened by the control of same pressure oil circuit, simplify the structure of hydraulic efficiency pressure system, save cost.
Further, in above-described embodiment, being communicated with of the second change-over valve 21 and the 6th hydraulic fluid port A4 is also integrated with damping 16 or flow regulating valve 17 on oil duct, damping 16 or flow regulating valve 17 can be chosen suitable numerical values recited according to the actual demand of concrete hydraulic circuit, in a kind of detailed description of the invention, what the utility model used is the damping 16 of diameter 1.0.
One preferred embodiment in, in the various embodiments described above, the control port of the first change-over valve 11, the second change-over valve 21 is communicated with respectively the load oil circuit of the first hoist motor 30 and the second hoist motor 31 by the corresponding hydraulic fluid port of offering on described valve body.
The unlatching control presssure of such the first change-over valve 11 and the second change-over valve 21, from the load oil circuit of corresponding side hoist motor, is taken from same oil circuit with the control oil sources of balance cock, is easy to mate with balance cock work, and easily realizes, and controls effect relatively good.
Further, in the valve body of control cock, can also be integrated with the first shuttle valve 12, valve body outside also has the 4th hydraulic fluid port B1 and the 5th hydraulic fluid port A1, two oil inlets of the first shuttle valve 12 are communicated with import and the outlet of the first hoist motor 30 by the 4th hydraulic fluid port B1, the 5th hydraulic fluid port A1 respectively, and the control port of the first change-over valve 11 is communicated with the oil outlet of the first shuttle valve 12.
In like manner, in the valve body of control cock, can also be integrated with the second shuttle valve 22, valve body outside also has the 7th hydraulic fluid port and the 8th hydraulic fluid port, two oil inlets of the second shuttle valve 22 pass through respectively the 7th hydraulic fluid port A2, the 8th hydraulic fluid port B2 by being communicated with import and the outlet of the second hoist motor 31, and the control port of the second change-over valve 21 is communicated with the oil outlet of the second shuttle valve 22.
Further, the 3rd hydraulic fluid port A3, the 6th hydraulic fluid port A4 are also integrated with check valve 15 with being communicated with on oil circuit of hydraulic reservoir, and the unlatching resistance of check valve 15 can calculate by the resistance of ducting on the unlatching resistance of the control oil cylinder of drg and oil circuit.
Understand in time the oil pressure on the oil circuit control of drg in order to make operating personal, the valve body outside of control cock is also provided with for first of setting pressure detection part and detects hydraulic fluid port MP3 and the second detection hydraulic fluid port MP4, and first detects the connection oil circuit that hydraulic fluid port is communicated with the first change-over valve 11 and the 3rd hydraulic fluid port A3; Be communicated with the connection oil circuit of the second change-over valve 21 and the 6th hydraulic fluid port A4 with the second detection hydraulic fluid port; Like this, the oil pressure that operating personal can detect according to detection part is understood the working condition of oil circuit, is conducive to timely trouble-shooting, ensures the safety of hydraulic efficiency pressure system operation.
The first change-over valve 11 and the second change-over valve 21 are not limited to above-mentioned hydraulic control valve, can also be electric change valve (the first electric control reversing valve 51 and the second electric control reversing valve 52 in Fig. 4), Fig. 4 has provided the third hydraulic efficiency pressure system detailed description of the invention, principle of work is identical with the control of surging, and is not described further at this.
The first change-over valve 11 and the second change-over valve 21 are only the names from function aspects herein, and both are can structure identical, also can be different, and in like manner, the first shuttle valve 12 and the second shuttle valve 22 are also similar.
On the basis of above-mentioned control cock, the utility model also provides a kind of hydraulic control system of hoist brake, comprise hoist motor, control the drg of hoist motor action and control the control cock of drg braking work, the control cock that control cock is above-mentioned arbitrary embodiment.
In another kind of detailed description of the invention, the utility model also provides a kind of hydraulic control system of hoist brake, comprise hoist motor, control the drg of hoist motor action and control the control cock of drg braking work, also comprise the pressure oil circuit of constant pressure, described drg is opened by the pressure oil circuit of described constant pressure.
In addition, the utility model also provides a kind of hoisting crane, comprises hoisting mechanism and controls the hydraulic control system of hoisting mechanism work, and hydraulic control system is above-mentioned hydraulic control system.
The structure of other parts of hoisting crane please refer to prior art, does not repeat them here.
Because hydraulic control system and the hoisting crane of hoist brake all have above-mentioned control cock, therefore hydraulic control system described in the utility model and hoisting crane also have the above-mentioned technique effect of control cock.
Hydraulic control system to control cock provided by the utility model and hoist brake, hoisting crane are described in detail above.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (11)
1. the control cock for hoist brake, it is characterized in that, comprise valve body, be integrated with the first change-over valve (11) in described valve body, described valve body outer setting has the first hydraulic fluid port (P), the second hydraulic fluid port (T) and the 3rd hydraulic fluid port (A3);
Described the first hydraulic fluid port (P), for being communicated with the constant pressure oil circuit of external pressure;
Described the second hydraulic fluid port (T), for being communicated with hydraulic reservoir;
Described the 3rd hydraulic fluid port (A3), for being communicated with the control oil cylinder of the first hoist brake (40);
In the time that described the first change-over valve (11) is positioned at the first control position, described the first hydraulic fluid port (P) and described the 3rd hydraulic fluid port (A3) conducting; In the time that described the first change-over valve (11) is positioned at the second control position, described the second hydraulic fluid port (T) and described the 3rd hydraulic fluid port (A3) conducting.
2. control cock as claimed in claim 1, is characterized in that, on the oil duct of described the first change-over valve (11) and the 3rd hydraulic fluid port (A3), is also integrated with damping (16) or flow regulating valve (17).
3. control cock as claimed in claim 1 or 2, it is characterized in that, in the valve body of described control cock, be also integrated with the second change-over valve (21), described valve body outer setting has the 6th hydraulic fluid port (A4), and described the 6th hydraulic fluid port (A4) is communicated with the control oil cylinder of the second hoist brake (41);
In the time that described the second change-over valve (21) is positioned at the first control position, described the first hydraulic fluid port (P) and described the 6th hydraulic fluid port (A4) conducting; In the time that described the second change-over valve (21) is positioned at the second control position, described the second hydraulic fluid port (T) and described the 6th hydraulic fluid port (A4) conducting.
4. control cock as claimed in claim 3, is characterized in that, being communicated with of described the second change-over valve (21) and the 6th hydraulic fluid port (A4) is also integrated with damping (16) or flow regulating valve (17) on oil duct.
5. control cock as claimed in claim 4, it is characterized in that, described the first change-over valve (11) and described the second change-over valve (21) are hydraulicchange-over valve, and the control port of described the first change-over valve (11), described the second change-over valve (21) is communicated with respectively the load oil circuit of the first hoist motor (30) and the second hoist motor (31) by the corresponding hydraulic fluid port of offering on described valve body.
6. control cock as claimed in claim 5, it is characterized in that, in the valve body of described control cock, be also integrated with the first shuttle valve (12), described valve body outside also has the 4th hydraulic fluid port (B1) and the 5th hydraulic fluid port (A1), two oil inlets of described the first shuttle valve (12) are communicated with import and the outlet of described the first hoist motor (30) by described the 4th hydraulic fluid port (B1), the 5th hydraulic fluid port (A1) respectively, and the control port of described the first change-over valve (11) is communicated with the oil outlet of described the first shuttle valve (12).
7. control cock as claimed in claim 6, it is characterized in that, in the valve body of described control cock, be also integrated with the second shuttle valve (22), described valve body outside also has the 7th hydraulic fluid port (A2) and the 8th hydraulic fluid port (B2), two oil inlets of described the second shuttle valve (22) are communicated with import and the outlet of described the second hoist motor (31) by described the 7th hydraulic fluid port (A2), the 8th hydraulic fluid port (B2) respectively, and the control port of described the second change-over valve (21) is communicated with the oil outlet of described the second shuttle valve (22).
8. control cock as claimed in claim 3, is characterized in that, being communicated with of described the 3rd hydraulic fluid port (A3), described the 6th hydraulic fluid port (A4) and described hydraulic reservoir is also integrated with check valve (15) on oil circuit.
9. control cock as claimed in claim 7, it is characterized in that, the valve body outside of described control cock is also provided with for first of setting pressure detection part and detects hydraulic fluid port (MP3) and the second detection hydraulic fluid port (MP4), and described first detects the connection oil circuit that hydraulic fluid port (MP3) is communicated with described the first change-over valve (11) and described the 3rd hydraulic fluid port (A3); Described second detects the connection oil circuit that hydraulic fluid port (MP4) is communicated with described the second change-over valve (21) and described the 6th hydraulic fluid port (A4).
10. the hydraulic control system of a hoist brake, comprise hoist motor, control the drg of hoist motor action and control the control cock of drg braking work, it is characterized in that, described control cock is the control cock described in the claims 1 to 9 any one.
11. 1 kinds of hoisting cranes, comprise hoisting mechanism and control the hydraulic control system of described hoisting mechanism work, it is characterized in that, described hydraulic control system is hydraulic control system claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835627.XU CN203845742U (en) | 2013-12-17 | 2013-12-17 | Control valve, hydraulic control system for hoisting brakes and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835627.XU CN203845742U (en) | 2013-12-17 | 2013-12-17 | Control valve, hydraulic control system for hoisting brakes and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203845742U true CN203845742U (en) | 2014-09-24 |
Family
ID=51558783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320835627.XU Expired - Lifetime CN203845742U (en) | 2013-12-17 | 2013-12-17 | Control valve, hydraulic control system for hoisting brakes and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203845742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641023A (en) * | 2013-12-17 | 2014-03-19 | 徐州重型机械有限公司 | Control valve, hydraulic control system of winch brake and crane |
| CN108223629A (en) * | 2018-03-23 | 2018-06-29 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
| CN114576224A (en) * | 2020-11-30 | 2022-06-03 | 潍坊嘉腾液压技术有限公司 | Control valve, reversing valve and control system thereof |
-
2013
- 2013-12-17 CN CN201320835627.XU patent/CN203845742U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641023A (en) * | 2013-12-17 | 2014-03-19 | 徐州重型机械有限公司 | Control valve, hydraulic control system of winch brake and crane |
| CN103641023B (en) * | 2013-12-17 | 2016-04-27 | 徐州重型机械有限公司 | The hydraulic control system of control cock and hoist brake, hoisting crane |
| CN108223629A (en) * | 2018-03-23 | 2018-06-29 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
| CN108223629B (en) * | 2018-03-23 | 2019-05-03 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
| CN114576224A (en) * | 2020-11-30 | 2022-06-03 | 潍坊嘉腾液压技术有限公司 | Control valve, reversing valve and control system thereof |
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