CN114084829A - Reliable constant tension valve - Google Patents
Reliable constant tension valve Download PDFInfo
- Publication number
- CN114084829A CN114084829A CN202111334644.0A CN202111334644A CN114084829A CN 114084829 A CN114084829 A CN 114084829A CN 202111334644 A CN202111334644 A CN 202111334644A CN 114084829 A CN114084829 A CN 114084829A
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- CN
- China
- Prior art keywords
- oil
- valve
- port
- constant tension
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 description 95
- 239000010720 hydraulic oil Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/029—Counterbalance valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a reliable constant tension valve which comprises a winch motor and a constant tension valve, wherein the constant tension valve comprises a control oil port P, a lifting oil port A connected with a lifting oil path of the winch motor, a descending oil port B connected with a descending oil path of the winch motor, an electromagnetic directional valve, a first logic valve, a second logic valve, a pilot overflow valve, a direct overflow valve and an oil drainage port L; the oil drain port L is connected with an oil tank; the invention has the advantage of avoiding the situation of vehicle sliding caused by pressure leakage of a lifting system when the crane does not use the constant tension function.
Description
Technical Field
The invention relates to the technical field of hydraulic systems, in particular to a reliable constant tension valve.
Background
The constant tension hydraulic system has the functions of keeping a certain tension of a steel wire rope of the winch, releasing the rope when the tension is too high, and retracting the rope when the tension is too low; the existing constant tension hydraulic system occupies a large space, which causes waste of installation space; in addition, when the crane does not use a constant-tension hydraulic system, the situation that the lifting system leaks to cause the problem that the lifting system slips exists.
Disclosure of Invention
The invention provides a reliable constant tension valve, which can avoid the situation of sliding caused by pressure leakage of a lifting system when a crane does not use a constant tension function.
In order to achieve the purpose, the technical scheme of the invention is as follows: a reliable constant tension valve comprises a winch motor and a constant tension valve, wherein the constant tension valve comprises a control oil port P, a lifting oil port A connected with a lifting oil path of the winch motor, a descending oil port B connected with a descending oil path of the winch motor, an electromagnetic directional valve, a first logic valve, a second logic valve, a pilot overflow valve, a direct overflow valve and an oil drainage port L; and the oil drain port L is connected with the oil tank.
An oil inlet of the electromagnetic directional valve is connected with the control oil port P, and an oil outlet of the electromagnetic directional valve is connected with control oil ports of the first logic valve and the second logic valve.
An oil port on one side of the first logic valve is connected with a lifting oil port A, and an oil port on the other side of the first logic valve is connected with an oil inlet of the pilot overflow valve; the oil outlet of the pilot overflow valve is connected with the descending oil port B; an external control oil port of the pilot overflow valve is connected with an oil port on one side of the second logic valve; an oil port on the other side of the second logic valve is connected with an oil inlet of the direct-guide overflow valve, and an oil outlet of the direct-guide overflow valve is connected with an oil drainage port L.
According to the arrangement, after the crane is switched to the constant tension mode, the electromagnetic directional valve is electrically switched, and the hydraulic oil is input into the control oil port P to control the hydraulic oil to the first logic valve and the second logic valve respectively, so that the first logic valve and the second logic valve are respectively switched; after the first logic valve is reversed, a lifting oil port A enters an oil inlet of the pilot overflow valve through the first logic valve, then hydraulic oil flows out of an external control oil port of the pilot overflow valve, enters an oil inlet of the direct overflow valve through the second logic valve, and finally returns to an oil tank through an oil drainage port L after flowing through an oil outlet of the direct overflow valve; the direct-acting overflow valve is set to be constant pressure, so that when the lifting pressure of a winch motor is higher than the constant pressure, the pilot overflow valve is opened, the pressure of a motor lifting oil way is released to a motor descending oil way, and a rope is released under certain tension of a steel wire rope; when the lifting pressure of the motor is smaller than the set constant pressure, the pilot overflow valve is closed, and the motor continues to lift and retract the rope; therefore, the electromagnetic directional valve and the pilot operated overflow valve form double insurance, and when the crane does not use constant tension, the situation of lifting and sliding caused by pressure leakage of a lifting system is avoided; in addition, all valve components with the constant tension function are integrally installed, modularization is achieved, and installation space is saved.
Further, an oil drain port of the electromagnetic directional valve is connected with the oil drain port L.
Further, the oil drain port of the first logic valve is connected with the oil drain port L.
Further, the oil drain port of the second logic valve is connected with the oil drain port L.
Furthermore, a first pressure measuring port is connected between an oil port of the second logic valve and an oil inlet of the direct-guiding overflow valve; therefore, the pressure of the oil inlet of the direct-guide overflow valve can be detected through the first pressure measuring port.
Further, a second pressure measuring port is connected between an oil port of the second logic valve and an external control oil port of the pilot overflow valve; therefore, the pressure of the external control oil port of the pilot overflow valve can be detected.
Further, an oil outlet of the electromagnetic directional valve is connected with a third pressure measuring port; thus, the pressure of the hydraulic oil output from the electromagnetic directional valve can be detected.
Further, a fourth pressure measuring port is connected between the lifting oil port A and an oil port of the first logic valve; therefore, the hydraulic oil pressure input by the lifting oil port A can be detected.
Drawings
Fig. 1 is a hydraulic schematic of the present invention.
Reference numerals: 1. an electromagnetic directional valve; 21. a first logic valve; 22. a second logic valve; 3. a pilot operated relief valve; 4. a direct-guided overflow valve; 51. controlling the oil port P; 52. a lifting oil port A; 53. a descending oil port B; 54. an oil drainage port L; 61. a first pressure port; 62. a second pressure port; 63. a third pressure port; 64. and a fourth pressure port.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a reliable constant tension valve comprises a winch motor and a constant tension valve, wherein the constant tension valve comprises a control oil port P51, a lifting oil port a52 connected with a winch motor lifting oil path, a descending oil port B53 connected with a winch motor descending oil path, an electromagnetic directional valve 1, a first logic valve 21, a second logic valve 22, a pilot overflow valve 3, a direct overflow valve 4 and an oil drainage port L54; the oil drain port L54 is connected with the oil tank.
An oil inlet of the electromagnetic directional valve 1 is connected with a control oil port P51, and oil outlets of the electromagnetic directional valve 1 are connected with control oil ports of the first logic valve 21 and the second logic valve 22; the electromagnetic directional valve 1 is a two-position three-way electromagnetic directional valve 1.
An oil port on one side of the first logic valve 21 is connected with a lifting oil port A52, and an oil port on the other side of the first logic valve 21 is connected with an oil inlet of the pilot overflow valve 3; the oil outlet of the pilot-operated overflow valve 3 is connected with a descending oil port B53; the external control oil port of the pilot overflow valve 3 is connected with the oil port on one side of the second logic valve 22; an oil port on the other side of the second logic valve 22 is connected with an oil inlet of the direct-guide overflow valve 4, and an oil outlet of the direct-guide overflow valve 4 is connected with an oil drainage port L54.
According to the arrangement, after the crane is switched to the constant tension mode, the electromagnetic directional valve 1 is electrically switched, the control oil port P51 inputs signal hydraulic oil to the control oil ports of the first logic valve 21 and the second logic valve 22 respectively, and the first logic valve 21 and the second logic valve 22 are switched respectively; after the first logic valve 21 is reversed, the lifting oil port A52 enters the oil inlet of the pilot overflow valve 3 through the first logic valve 21, then hydraulic oil flows out of the external control oil port of the pilot overflow valve 3, enters the oil inlet of the direct overflow valve 4 through the second logic valve 22, and finally returns to the oil tank through the oil outlet of the direct overflow valve 4 via the oil drainage port L54; the direct-acting overflow valve is set to be constant pressure, so that the pilot-operated overflow valve 3 is opened when the lifting pressure of a winch motor is greater than the constant pressure, the pressure of a motor lifting oil way is released to a motor descending oil way, and a rope is released under certain tension of a steel wire rope; when the lifting pressure of the motor is smaller than the set constant pressure, the pilot overflow valve 3 is closed, and the motor continues to lift and retract the rope; thus, the electromagnetic directional valve 1 and the pilot operated overflow valve 3 form double insurance, when the crane does not use constant tension, the situation that the lifting and sliding caused by pressure leakage of a lifting system is avoided; in addition, all valve components with the constant tension function are integrally installed, modularization is achieved, and installation space is saved.
The drain port of the electromagnetic directional valve 1 is connected to a drain port L54.
The drain port of the first logic valve 21 is connected to the drain port L54.
The drain port of the second logic valve 22 is connected to the drain port L54.
A first pressure measuring port 61 is connected between an oil port of the second logic valve 22 and an oil inlet of the direct-guide overflow valve 4; thus, the pressure of the oil inlet of the direct-guide relief valve 4 can be detected through the first pressure measuring port 61.
A second pressure measuring port 62 is connected between an oil port of the second logic valve 22 and an external control oil port of the pilot overflow valve 3; thus, the pressure of the external control port of the pilot type relief valve 3 can be detected.
An oil outlet of the electromagnetic directional valve 1 is connected with a third pressure measuring port 63; in this way, the pressure of the hydraulic oil output from the electromagnetic directional valve 1 can be detected.
A fourth pressure measuring port 64 is connected between the lifting port A52 and one port of the first logic valve 21; thus, the hydraulic oil pressure input from the lifting port a52 can be detected.
Claims (8)
1. A reliable constant tension valve, includes winch motor and constant tension valve, its characterized in that: the constant tension valve comprises a control oil port P, a lifting oil port A connected with a lifting oil path of the winch motor, a descending oil port B connected with a descending oil path of the winch motor, an electromagnetic directional valve, a first logic valve, a second logic valve, a pilot overflow valve, a direct overflow valve and an oil drainage port L; the oil drain port L is connected with an oil tank;
an oil inlet of the electromagnetic directional valve is connected with a control oil port P, and oil outlets of the electromagnetic directional valve are connected with control oil ports of the first logic valve and the second logic valve;
an oil port on one side of the first logic valve is connected with a lifting oil port A, and an oil port on the other side of the first logic valve is connected with an oil inlet of the pilot overflow valve; the oil outlet of the pilot overflow valve is connected with the descending oil port B; an external control oil port of the pilot overflow valve is connected with an oil port on one side of the second logic valve; an oil port on the other side of the second logic valve is connected with an oil inlet of the direct-guide overflow valve, and an oil outlet of the direct-guide overflow valve is connected with an oil drainage port L.
2. A reliable constant tension valve according to claim 1, wherein: and an oil drainage port of the electromagnetic directional valve is connected with the oil drainage port L.
3. A reliable constant tension valve according to claim 1, wherein: and the oil drainage port of the first logic valve is connected with the oil drainage port L.
4. A reliable constant tension valve according to claim 1, wherein: and the oil drainage port of the second logic valve is connected with the oil drainage port L.
5. A reliable constant tension valve according to claim 1, wherein: and a first pressure measuring port is also connected between an oil port of the second logic valve and an oil inlet of the direct-guide overflow valve.
6. A reliable constant tension valve according to claim 1, wherein: and a second pressure measuring port is also connected between an oil port of the second logic valve and an external control oil port of the pilot overflow valve.
7. A reliable constant tension valve according to claim 1, wherein: and an oil outlet of the electromagnetic directional valve is connected with a third pressure measuring port.
8. A reliable constant tension valve according to claim 1, wherein: and a fourth pressure measuring port is connected between the lifting oil port A and an oil port of the first logic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111334644.0A CN114084829A (en) | 2021-11-11 | 2021-11-11 | Reliable constant tension valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111334644.0A CN114084829A (en) | 2021-11-11 | 2021-11-11 | Reliable constant tension valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114084829A true CN114084829A (en) | 2022-02-25 |
Family
ID=80300160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111334644.0A Pending CN114084829A (en) | 2021-11-11 | 2021-11-11 | Reliable constant tension valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114084829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115818489A (en) * | 2022-09-27 | 2023-03-21 | 中船华南船舶机械有限公司 | Control method of constant tension system of crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261451A (en) * | 1979-03-02 | 1981-04-14 | Northwest Engineering Company | Clutch drag controls for hoist drum |
| CN102878142A (en) * | 2012-10-31 | 2013-01-16 | 南通润邦重机有限公司 | Constant-tension proportional hydraulic valve group |
| CN107500150A (en) * | 2017-09-29 | 2017-12-22 | 江苏威和海洋工程设备有限公司 | A kind of passive type identical tension hydraulic control system of mooring winch |
| CN109502494A (en) * | 2017-09-14 | 2019-03-22 | 上海中车艾森迪海洋装备有限公司 | A kind of deep-sea drawing cable hydraulic system |
| CN216918430U (en) * | 2021-11-11 | 2022-07-08 | 中船华南船舶机械有限公司 | Constant tension valve |
-
2021
- 2021-11-11 CN CN202111334644.0A patent/CN114084829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261451A (en) * | 1979-03-02 | 1981-04-14 | Northwest Engineering Company | Clutch drag controls for hoist drum |
| CN102878142A (en) * | 2012-10-31 | 2013-01-16 | 南通润邦重机有限公司 | Constant-tension proportional hydraulic valve group |
| CN109502494A (en) * | 2017-09-14 | 2019-03-22 | 上海中车艾森迪海洋装备有限公司 | A kind of deep-sea drawing cable hydraulic system |
| CN107500150A (en) * | 2017-09-29 | 2017-12-22 | 江苏威和海洋工程设备有限公司 | A kind of passive type identical tension hydraulic control system of mooring winch |
| CN216918430U (en) * | 2021-11-11 | 2022-07-08 | 中船华南船舶机械有限公司 | Constant tension valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115818489A (en) * | 2022-09-27 | 2023-03-21 | 中船华南船舶机械有限公司 | Control method of constant tension system of crane |
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