CN216711452U - Hydraulic winch steel wire rope constant tension control system - Google Patents
Hydraulic winch steel wire rope constant tension control system Download PDFInfo
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- CN216711452U CN216711452U CN202123351048.1U CN202123351048U CN216711452U CN 216711452 U CN216711452 U CN 216711452U CN 202123351048 U CN202123351048 U CN 202123351048U CN 216711452 U CN216711452 U CN 216711452U
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- 229910000831 Steel Inorganic materials 0.000 title abstract description 13
- 239000010959 steel Substances 0.000 title abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 79
- 239000010705 motor oil Substances 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
The utility model discloses a hydraulic winch steel wire rope constant tension control system for automatically winding and unwinding a mooring rope aiming at different loading conditions of ships, which comprises an oil inlet main pipe, an oil return main pipe, a main control valve bank, a constant tension valve bank and a hydraulic motor group, wherein oil inlet ports of the main control valve bank and the constant tension valve bank are respectively connected with the oil inlet main pipe through pipelines, and oil outlet ports are respectively connected with a motor oil inlet main pipe of the hydraulic motor group through pipelines; a motor oil return main pipe of the hydraulic motor group is connected with an oil return inlet of the main control valve group, and an oil return outlet of the main control valve group is connected with an oil return main pipe; a reversing handle for switching the hydraulic motor group between a constant tension state and a main control state is arranged on the main control valve group; the constant tension valve group comprises at least two automatic valve groups which are arranged in parallel and correspond to different load gears, the automatic valve group comprises a reversing valve and a three-way pressure reducing valve which are sequentially connected through pipelines along the oil outlet direction, and an oil drainage port of the three-way pressure reducing valve is connected with an oil return main pipe through an oil drainage branch pipe.
Description
Technical Field
The utility model relates to a constant tension control system for a steel wire rope of a hydraulic winch.
Background
At present, most of machines for hoisting and towing heavy objects, such as towing machines, mooring winches and the like, adopt hydraulic winches, and with the increasing complexity of the working environment of ships, higher requirements are put forward on the safety of the hydraulic winches, so that the hydraulic winches are required to ensure slow speed, stability and controllability in the hoisting, running, accelerating, braking and other processes, the hydraulic winches are also required to have the capacity of adapting to load changes to keep the tension of steel wire ropes constant, and the safety accident that the steel wire ropes break due to the fact that the steel wire ropes exceed the maximum bearing capacity due to sudden increase of loads is prevented. Particularly, in the hydraulic winch for the ship, the ship body jolts and shakes due to wave fluctuation, the load of the hydraulic winch in the operation process is often changed, the tension of the steel wire rope driving the hydraulic winch is also changed, the tension borne by the steel wire rope exceeds the maximum load easily to cause the risk of breaking, and serious safety accidents are caused, so that the ship has strict requirements on the constant tension control capability of the hydraulic winch. In addition, in order to meet the requirements of different loads, the hydraulic winch is required to have the function of adjusting the output capacity, so that the hydraulic winch has stronger universality.
The 'constant tension automatic control device through a hydraulic oil circuit' disclosed in chinese patent CN2012201763069, comprises a hydraulic pump unit, a constant tension valve set and a hydraulic motor connected by an oil pipe, wherein the constant tension valve set is arranged between the hydraulic pump unit and the hydraulic motor. The electric motor drives the hydraulic pump unit to press oil out, the oil reaches the hydraulic motor through the three-way pressure reducing valve and the reversing valve, the hydraulic motor is driven to rotate, and the conversion between hydraulic energy and mechanical energy is realized through the motor, so that the scaling of a mooring rope on the mooring winch is automatically adjusted, and although the problem that the mooring rope becomes tight or loose due to the rise and fall of tidal water when a ship moors or loads and unloads goods is solved to a certain extent, the potential safety hazard that the mooring rope is broken or the ship is far away from a wharf is possibly caused. However, the automatic control device only comprises one hydraulic circuit, the adjustable load is relatively fixed, different load adjustments can not be carried out according to different actual loading conditions of the ship, the automatic control device is inconvenient for a shipman to operate, and the application range has larger limitation.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the constant tension control system for the hydraulic winch steel wire rope is used for automatically winding and unwinding the cable according to different loading conditions of a ship.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a hydraulic winch steel wire rope constant tension control system comprises an oil inlet main pipe, an oil return main pipe, a main control valve bank, a constant tension valve bank and a hydraulic motor bank, wherein oil inlet ports of the main control valve bank and the constant tension valve bank are respectively connected with the oil inlet main pipe through pipelines; the oil outlet ports of the main control valve group and the constant tension valve group are respectively connected with a motor oil inlet main pipe of the hydraulic motor group through pipelines; a motor oil return main pipe of the hydraulic motor group is connected with an oil return inlet of the main control valve group, and an oil return outlet of the main control valve group is connected with an oil return main pipe;
the main control valve group comprises a manual main control valve and a safety valve I, wherein a reversing handle is arranged on the manual main control valve, and the reversing handle enables the hydraulic motor group to be switched between a constant tension state and a main control state;
the constant tension valve group comprises at least two automatic valve groups which are arranged in parallel and correspond to different load gears, the automatic valve group comprises a reversing valve and a three-way pressure reducing valve which are sequentially connected through a pipeline along the oil outlet direction, the oil drain port of the three-way pressure reducing valve is connected with the oil return main pipe through an oil drain branch pipe,
the hydraulic motor group comprises a first hydraulic motor and a second hydraulic motor which are arranged in parallel to drive the winch, oil inlets of the first hydraulic motor and the second hydraulic motor are respectively connected with a motor oil inlet main pipe through pipelines, oil return ports of the first hydraulic motor and the second hydraulic motor are respectively connected with a motor oil return main pipe through pipelines, and oil drain ports of the first hydraulic motor and the second hydraulic motor are respectively connected with an oil return main pipe through oil drain branch pipes provided with check valves.
As a preferable scheme, a second safety valve is arranged between the motor oil inlet main pipe and the motor oil return main pipe, a balance valve is further arranged between the motor oil inlet main pipe and the motor oil return main pipe, and the balance valve and the second safety valve are arranged in parallel.
As a preferred scheme, the shells of the first hydraulic motor and the second hydraulic motor are connected with a three-position four-way valve through two pipelines, and the three-position four-way valve is also respectively connected with a motor oil inlet main pipe and an oil return main pipe through two pipelines.
As a preferable scheme, the constant tension valve group comprises three automatic valve groups corresponding to different load degrees, which are arranged in parallel, and three-way pressure reducing valves of the three automatic valve groups respectively provide oil supply pressures of 60%, 80% and 100%.
Preferably, the reversing valve is a manual reversing valve, and the manual reversing valve is provided with a mechanical reversing handle.
The utility model has the beneficial effects that:
the automatic control system for the constant tension of the steel wire rope of the hydraulic winch can realize automatic rope reeling and unreeling according to different loading conditions of ships, and can effectively prevent accidents caused by rope breakage due to the change of the draught degree of the ships when the ships are moored or goods are loaded and unloaded.
This constant tension automatic control system of hydraulic winch wire rope contains many hydraulic circuit, be provided with a plurality of constant tension valves, the hydraulic pressure constant tension automatic control system can switch the hydraulic circuit of different gears according to the external load of difference, the load adjustment of carrying on differently according to the different actual loading condition of boats and ships has been realized, make things convenient for crewman's operation, its application scope has been enlarged, it is comparatively fixed to have overcome the load that constant tension controlling means can adjust among the prior art, can not carry out different load adjustment according to the different actual loading condition of boats and ships, inconvenient crewman's operation, application scope has the shortcoming of great limitation.
Because a second safety valve is arranged between the main motor oil inlet pipe and the main motor oil return pipe, a balance valve is further arranged between the main motor oil inlet pipe and the main motor oil return pipe, and the balance valve and the second safety valve are arranged in parallel, the safety and the stability of the system are enhanced.
Because the shells of the first hydraulic motor and the second hydraulic motor are connected with the three-position four-way valve through two pipelines, and the three-position four-way valve is also respectively connected with the motor oil inlet main pipe and the oil return main pipe through two pipelines, the accumulated oil in the shells can be led out in time, and the normal work of the hydraulic motors is ensured.
Drawings
Fig. 1 is a schematic diagram of the hydraulic structure of the utility model.
Fig. 2 is a schematic diagram of the hydraulic system of the present invention.
FIG. 3 is a graph of cable tension versus cable take-up and pay-off speed during cable take-up and pay-off for a constant tension system.
Fig. 4 is a schematic view of a hydraulic circuit for a cable retracting action of a constant tension system at 60% load.
Fig. 5 is a schematic diagram of the hydraulic circuit for the payout operation of the constant tension system at 60% load.
In the figure:
1. a main control valve set 11, a manual valve 12 and a safety valve I
13. Safety valve II 14 and balance valve
2. Constant tension valve set 21, first gear valve set 22 and second gear valve set
23. Three-gear valve group 24, reversing valve 25 and three-way pressure reducing valve
3. Hydraulic motor group 31, hydraulic motor one 32, hydraulic motor two
33. Three-position four-way valve
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-5, a hydraulic winch steel wire rope constant tension control system comprises an oil inlet main pipe, an oil return main pipe, a main control valve bank 1, a constant tension valve bank 2 and a hydraulic motor bank 3, wherein oil inlet ports of the main control valve bank 1 and the constant tension valve bank 2 are respectively connected with the oil inlet main pipe through pipelines; the oil outlet ports of the main control valve group 1 and the constant tension valve group 2 are respectively connected with a motor oil inlet main pipe of the hydraulic motor group 3 through pipelines; a motor oil return main pipe of the hydraulic motor group 3 is connected with an oil return inlet of the main control valve group 1, and an oil return outlet of the main control valve group 1 is connected with an oil return main pipe;
the main control valve group 1 comprises a manual main control valve 11 and a safety valve I12, wherein a reversing handle is arranged on the manual main control valve 11, and the hydraulic motor group 3 is switched between a constant tension state and a main control state through the reversing handle;
the constant tension valve group 2 comprises three automatic valve groups which are arranged in parallel and correspond to different load gears, each automatic valve group comprises a reversing valve 25 and a three-way pressure reducing valve 24 which are sequentially connected through pipelines along the oil outlet direction, an oil drainage port of each three-way pressure reducing valve 24 is connected with an oil return main pipe through an oil drainage branch pipe, and the three-way pressure reducing valves 24 of the three automatic valve groups respectively provide oil supply pressure of 60%, 80% and 100%; the reversing valve 24 is a manual reversing valve provided with a mechanical reversing handle.
The hydraulic motor group 3 comprises a first hydraulic motor 31 and a second hydraulic motor 32 which are arranged in parallel to drive the winch, oil inlets of the first hydraulic motor 31 and the second hydraulic motor 32 are respectively connected with a motor oil inlet main pipe through pipelines, oil return ports of the first hydraulic motor 31 and the second hydraulic motor 32 are respectively connected with a motor oil return main pipe through pipelines, and oil drain ports of the first hydraulic motor 31 and the second hydraulic motor 32 are respectively connected with an oil return main pipe through oil drain branch pipes provided with one-way valves;
a second safety valve 13 is arranged between the motor oil inlet main pipe and the motor oil return main pipe, a balance valve 14 is further arranged between the motor oil inlet main pipe and the motor oil return main pipe, and the balance valve 14 and the second safety valve 13 are arranged in parallel.
The first hydraulic motor 31 and the second hydraulic motor 32 are both connected with a three-position four-way valve 33 through two pipelines, and the three-position four-way valve 33 is also respectively connected with a motor oil inlet main pipe and an oil return main pipe through two pipelines.
The operation and use steps of the constant tension automatic control system of the hydraulic winch are as follows:
s1: tying a cable after the ship is landed, confirming that the clutch of the anchor gear is disengaged and needing to be closed by using a constant-tension roller clutch;
s2: the reversing handle is switched from the master control position to the constant tension position, the main pump stops acting, and the constant tension pump set is started;
s3: a constant tension valve group of a required load gear is opened through a mechanical reversing handle, a roller brake is released, and a constant tension automatic control system starts to work automatically;
s4: after the use is finished, the roller is braked firstly, and then the constant tension valve group and the constant tension pump group are closed.
As shown in fig. 3, F1 below represents the cable tension, F2 represents the hydraulic motor output force (winch output force), and F represents the mechanical resistance of the winch.
When the cable tension force F1 is increased, the cable tension force F1 is greater than the sum of the output force F2 of the hydraulic motor 3 and the mechanical resistance F of the winch (i.e., F1 is greater than F2+ F, at this time, the output force F2 of the hydraulic motor is in the same direction as the mechanical resistance F of the winch), the hydraulic motor 3 starts to rotate reversely, the winch is in a cable unwinding state, and the relationship between the cable tension force and the cable winding and unwinding speed is shown as segment BC in fig. 3;
when the cable tension F1 is reduced and the cable tension F1 is smaller than the difference between the output force F2 of the hydraulic motor 3 and the mechanical resistance F of the winch (i.e. F2 is greater than F1+ F, at this time, the cable tension F1 is in the same direction as the mechanical resistance F of the winch), the hydraulic motor 3 starts to rotate forwards, at this time, the winch is in a cable retracting state, and the relationship between the cable tension and the cable retracting speed is as shown in the OA section part in fig. 3;
when the cable tension F1 is between these two forces (i.e., F2-F1F 2+ F), the motor remains stationary and the winch neither unwinds nor retracts the cable, and the relationship between cable tension and cable take-up and pay-off speed is shown as section AB in FIG. 3.
Specifically, as shown in fig. 4, for example, when the constant tension system is under a 60% load condition, when the tide rises/falls, the original tensioned cable gradually becomes loose, the tension force F1 of the cable is reduced, so that F1 is smaller than F2-F, at this time, oil enters the oil inlet P, constant pressure oil is output through the three-way pressure reducing valve 24, and then the constant pressure oil passes through the reversing valve 24 to reach inlets of the first hydraulic motor 31 and the second hydraulic motor 32, so as to drive the first hydraulic motor 31 and the second hydraulic motor 32 to drive the winch drum to rotate, so that the winch is in a cable-retracting state. Because the inlet pressure of the first hydraulic motor 31 and the inlet pressure of the second hydraulic motor 32 are constant, and the mechanical resistance of the winch is constant, after the first hydraulic motor 31 and the second hydraulic motor 32 overcome the mechanical resistance F of the winch, the winch output force F2 is constant; when the tension force F1 of the cable is gradually smaller than the output force of the winch, the winch starts to retract the cable, the tension force of the cable is gradually increased until the cable is stopped to retract when the output force of the winch is the same, and at the moment, F2-F is not less than F1 and not less than F2+ F, balance is achieved.
As shown in fig. 5, the constant tension system is under 60% load condition as an example, when a tide falls/a cargo is loaded, the original tensioned cable tension force F1 continues to increase, so that F2+ F < F1, at this time, the hydraulic motor group system works normally, the tension force transmits force from the drum and the like to the first hydraulic motor 31 and the second hydraulic motor 32 through the cable, the inlet pressure of the first hydraulic motor 31 and the second hydraulic motor 32 increases, the three-way pressure reducing valve 24 starts oil drainage in order to maintain constant pressure, so that the inlets of the first hydraulic motor 31 and the second hydraulic motor 32 are reversed to drive the winch to release the cable. When the tension F1 on the cable is gradually larger than the sum of the driving force F2 of the hydraulic motor and the mechanical resistance F of the winch (F2+ F is less than or equal to F1), the winch is used for releasing the cable, when the tension F1 on the cable is the same as the output force of the winch, the cable is stopped releasing, and when F2-F is less than or equal to F1 and less than or equal to F2+ F, the balance is achieved.
The hydraulic motor group can also adopt three or more hydraulic motors which are connected in parallel.
The foregoing embodiments are illustrative only of the principles and utilities of the present invention, as well as some embodiments, and are not intended to limit the utility model; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides a constant tension control system of hydraulic winch wire rope which characterized in that: the hydraulic motor group comprises an oil inlet main pipe, an oil return main pipe, a main control valve group, a constant tension valve group and a hydraulic motor group, wherein oil inlet ports of the main control valve group and the constant tension valve group are respectively connected with the oil inlet main pipe through pipelines; the oil outlet ports of the main control valve group and the constant tension valve group are respectively connected with a motor oil inlet main pipe of the hydraulic motor group through pipelines; a main motor oil return pipe of the hydraulic motor group is connected with an oil return inlet of the main control valve group, and an oil return outlet of the main control valve group is connected with an oil return main pipe;
the main control valve group comprises a manual main control valve and a safety valve I, wherein a reversing handle is arranged on the manual main control valve, and the reversing handle enables the hydraulic motor group to be switched between a constant tension state and a main control state;
the constant tension valve group comprises at least two automatic valve groups which are arranged in parallel and correspond to different load gears, the automatic valve group comprises a reversing valve and a three-way pressure reducing valve which are sequentially connected through a pipeline along the oil outlet direction, the oil drain port of the three-way pressure reducing valve is connected with the oil return main pipe through an oil drain branch pipe,
the hydraulic motor group comprises a first hydraulic motor and a second hydraulic motor which are arranged in parallel to drive the winch, oil inlets of the first hydraulic motor and the second hydraulic motor are respectively connected with a motor oil inlet main pipe through pipelines, oil return ports of the first hydraulic motor and the second hydraulic motor are respectively connected with a motor oil return main pipe through pipelines, and oil drain ports of the first hydraulic motor and the second hydraulic motor are respectively connected with an oil return main pipe through oil drain branch pipes provided with check valves.
2. The hydraulic winch cable constant tension control system as claimed in claim 1, wherein: a second safety valve is arranged between the motor oil inlet main pipe and the motor oil return main pipe, a balance valve is further arranged between the motor oil inlet main pipe and the motor oil return main pipe, and the balance valve and the second safety valve are connected in parallel.
3. The hydraulic winch cable constant tension control system as claimed in claim 1, wherein: the shell of the first hydraulic motor and the shell of the second hydraulic motor are connected with a three-position four-way valve through two pipelines, and the three-position four-way valve is further connected with a motor oil inlet main pipe and an oil return main pipe through two pipelines respectively.
4. A hydraulic winch cable constant tension control system as claimed in any one of claims 1 to 3, wherein: the constant tension valve group comprises three automatic valve groups which are arranged in parallel and correspond to different load degrees, and three-way reducing valves of the three automatic valve groups respectively provide oil supply pressures of 60%, 80% and 100%.
5. The hydraulic winch cable constant tension control system as claimed in claim 4, wherein: the reversing valve is a manual reversing valve, and the manual reversing valve is provided with a mechanical reversing handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351048.1U CN216711452U (en) | 2021-12-28 | 2021-12-28 | Hydraulic winch steel wire rope constant tension control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351048.1U CN216711452U (en) | 2021-12-28 | 2021-12-28 | Hydraulic winch steel wire rope constant tension control system |
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| Publication Number | Publication Date |
|---|---|
| CN216711452U true CN216711452U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123351048.1U Withdrawn - After Issue CN216711452U (en) | 2021-12-28 | 2021-12-28 | Hydraulic winch steel wire rope constant tension control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314395A (en) * | 2021-12-28 | 2022-04-12 | 江苏政田重工股份有限公司 | Constant tension control system for steel wire rope of hydraulic winch |
-
2021
- 2021-12-28 CN CN202123351048.1U patent/CN216711452U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314395A (en) * | 2021-12-28 | 2022-04-12 | 江苏政田重工股份有限公司 | Constant tension control system for steel wire rope of hydraulic winch |
| CN114314395B (en) * | 2021-12-28 | 2024-06-07 | 江苏政田重工股份有限公司 | Constant tension control system for hydraulic winch steel wire rope |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220610 Effective date of abandoning: 20240607 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220610 Effective date of abandoning: 20240607 |