CN203754325U - Safety protection device for winch - Google Patents
Safety protection device for winch Download PDFInfo
- Publication number
- CN203754325U CN203754325U CN201420034030.XU CN201420034030U CN203754325U CN 203754325 U CN203754325 U CN 203754325U CN 201420034030 U CN201420034030 U CN 201420034030U CN 203754325 U CN203754325 U CN 203754325U
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- hydraulic ram
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000004146 energy storage Methods 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a safety protection device for a winch and belongs to the field of engineering machinery. The device comprises a deceleration brake mechanism and a ratchet wheel and pawl mechanism which are used for braking the winch, a first hydraulic ram for driving the deceleration brake mechanism to act, a second deceleration brake mechanism for driving the ratchet wheel and pawl mechanism to act, a first hydraulic control system for controlling the first hydraulic ram to act and a second hydraulic control system for controlling the second hydraulic ram to act. A first hydraulic control system is communicated with a control oil port of the first hydraulic ram which is mechanically connected with the deceleration brake mechanism, and the second hydraulic control system is communicated with a control oil port of the second hydraulic ram which is mechanically connected with the ratchet wheel and pawl mechanism. By means of the device, the winch is braked through the deceleration brake mechanism and the ratchet wheel and pawl mechanism respectively, dual guarantees are provided for braking, and the safety is high.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of safety protection device for winch.
Background technology
Winch is with the small-sized weight-lifting equipment of reel lay winding wire ropes or chain lifting or traction weight, is generally all provided with safety guard on winch, for play safety guard-safeguard when winch is not worked or when the cataphoretic failure of winch working process medium power source.
Existing safety protection device for winch comprises brake disc, drives the hydraulic ram of brake disc action and the oil circuit control of controlling hydraulic ram action.When driving the HM Hydraulic Motor of winch to break down, oil circuit control is controlled hydraulic ram and is driven brake disc action, and winch is realized braking, prevents that weight from, from dropping, playing the effect of safety guard-safeguard in the air.
In realizing process of the present utility model, contriver finds that prior art at least exists following problem:
When brake disc breaks down, existing safety protection device for winch cannot be realized the braking of winch, likely can cause the accident, and safety is lower.
Utility model content
In order to solve the lower problem of prior art safety, the utility model embodiment provides a kind of safety protection device for winch.Described technical scheme is as follows:
The utility model embodiment provides a kind of safety protection device for winch, described device comprises the speed-down braking mechanism for described winch is braked and the first hydraulic ram that drives described speed-down braking mechanism to move, and described device also comprises the ratchet and pawl arrangement for described winch is braked, the second hydraulic ram that drives described ratchet and pawl arrangement action, the first hydraulic control system of controlling described the first hydraulic ram action and the second hydraulic control system of controlling described the second hydraulic ram; Described the first hydraulic control system is communicated with the control port of described the first hydraulic ram, described the first hydraulic ram and described speed-down braking mechanism mechanical connection, described the second hydraulic control system is communicated with the control port of described the second hydraulic ram, described the second hydraulic ram and described ratchet and pawl arrangement mechanical connection.
Preferably, described device also comprises first throttle shutoff valve, and the control port of described the first hydraulic ram is communicated with the control port of described the second hydraulic ram by described first throttle shutoff valve.
In the possible implementation of the first of the present utility model, described the second hydraulic control system comprises constant pressure source and second section flow shutoff valve, and described constant pressure source is communicated with the control port of described the second hydraulic ram by described second section flow shutoff valve.
In the possible implementation of the second of the present utility model, described the first hydraulic control system comprises brake control valve group, described brake control valve group comprises shuttle valve, the first oil inlet of described shuttle valve is communicated with the first actuator port of described HM Hydraulic Motor, the second oil inlet of described shuttle valve is communicated with the second actuator port of described HM Hydraulic Motor, and the oil outlet of described shuttle valve is communicated with the control port of described the first hydraulic ram.
In the third possible implementation of the present utility model, described brake control valve group also comprises reducing valve, pilot-operated type pilot operated directional control valve and the 3rd throttling stop valve, and the oil outlet of described shuttle valve is communicated with the control port of described the first hydraulic ram by described reducing valve, described pilot-operated type pilot operated directional control valve and described the 3rd throttling stop valve successively.
In the 4th kind of possible implementation of the present utility model, described the first hydraulic control system comprises manual pump, check valve, the first by pass valve, and the 4th throttling stop valve, the oil inlet of described manual pump is communicated with fuel tank, the oil outlet of described manual pump is communicated with the oil inlet of described check valve, the oil outlet of described check valve is communicated with the control port of described the first hydraulic ram by described the 4th throttling stop valve, the oil inlet of described the first by pass valve, the first control port of described the first by pass valve is communicated with the oil outlet of described check valve respectively, the oil outlet of described the first by pass valve is communicated with described fuel tank.
In the 5th kind of possible implementation of the present utility model, described the first hydraulic control system also comprises the 5th throttling stop valve, and the first actuator port of described HM Hydraulic Motor is communicated with the second actuator port of described HM Hydraulic Motor by described the 5th throttling stop valve.
In the 6th kind of possible implementation of the present utility model, described the first hydraulic control system also comprises energy storage, described energy storage is connected on the oil circuit between described the 4th throttling stop valve and the oil outlet of described manual pump, and is also provided with the 6th throttling stop valve on the oil circuit between described energy storage and described the 4th throttling stop valve.
In the 7th kind of possible implementation of the present utility model, described the first hydraulic control system also comprises the pressure relay for detection of described energy storage internal pressure.
In the 8th kind of possible implementation of the present utility model, described the first hydraulic control system also comprises the oil pressure indicator for detection of the oil pressure of described manual pump.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By drag mechanism and ratchet and pawl arrangement, respectively winch is realized to braking, for drag provides double shield, safety is higher.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the safety protection device for winch that provides of the utility model embodiment;
Fig. 2 is the structural representation of the safety valve group that provides of the utility model embodiment.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment
The utility model embodiment provides a kind of safety protection device for winch; referring to Fig. 1, this device comprises speed-down braking mechanism 1 for winch is braked and ratchet and pawl arrangement 2, drive speed-down braking mechanism 1 action the first hydraulic ram 10, the second hydraulic ram 20 of driving pawl detent mechanism 2 actions, the second hydraulic control system of controlling the first hydraulic control system of the first hydraulic ram 10 actions and controlling the second hydraulic ram 20 actions.
In the present embodiment, the first hydraulic control system is communicated with the control port 10a of the first hydraulic ram 10, the first hydraulic ram 10 and speed-down braking mechanism 1 mechanical connection, the second hydraulic control system is communicated with the control port 20a of the second hydraulic ram 20, the second hydraulic ram 20 and ratchet and pawl arrangement 2 mechanical connections.Speed-down braking mechanism 1 and ratchet and pawl arrangement 2 respectively with HM Hydraulic Motor 30 mechanical connections.
Speed-down braking mechanism 1 can comprise brake disc.Ratchet and pawl arrangement 2 comprises ratchet and pawl.Speed-down braking mechanism 1 and ratchet and pawl arrangement 2 can adopt existing brake structure, and the present invention does not limit this.
Easily know, when winch is normally worked, need first by the first hydraulic control system, ratchet and pawl arrangement 2 to be opened, and pass through brake control valve assembly 60(referring to Fig. 1), speed-down braking mechanism 1 is opened, and then controlled HM Hydraulic Motor 30 runnings by brake control valve assembly 60.
Preferably, this device can also comprise that the control port 10a of first throttle shutoff valve 40, the first hydraulic rams 10 is communicated with the control port 20a of the second hydraulic ram 20 by first throttle shutoff valve 40.It should be noted that, first throttle shutoff valve 40 is normally off.When the second hydraulic control system fault, can open this first throttle shutoff valve 40, while making winch need normal work, brake control valve assembly 60 can be opened speed-down braking mechanism 1 and ratchet and pawl arrangement 2 simultaneously, or winch need to be met an urgent need while discharging, and the first hydraulic control system can be opened speed-down braking mechanism 1 and ratchet and pawl arrangement 2 simultaneously.
Understandably, when first throttle shutoff valve is opened, the first hydraulic control system or the second hydraulic control system can be controlled the first hydraulic ram and the second hydraulic ram simultaneously, and then speed-down braking mechanism 1 and ratchet and pawl arrangement 2 are controlled.
In the first implementation of the present embodiment, the second hydraulic control system comprises constant pressure source 3 and second section flow shutoff valve 50.Constant pressure source 3 is communicated with the control port 20a of the second hydraulic ram 20 by second section flow shutoff valve 50.It should be noted that, second section flow shutoff valve 50 is normally open.
Understandably, constant pressure source can carry out stable control to the second hydraulic ram, and then ratchet and pawl arrangement is carried out to stable control, has improved the stability of winch operation.
In the second implementation of the present embodiment, referring to Fig. 2, the first hydraulic control system can comprise brake control valve group 60, brake control valve group 60 can comprise shuttle valve 61, the first oil inlet 61a of shuttle valve 61 is communicated with the first actuator port 30a of HM Hydraulic Motor 30, the second oil inlet 61b of shuttle valve 61 is communicated with the second actuator port 30b of HM Hydraulic Motor 30, and the oil outlet 61c of shuttle valve 61 is communicated with the control port 10a of the first hydraulic ram 10.
In the present embodiment, brake control valve group 60 can also comprise reducing valve 62, pilot-operated type pilot operated directional control valve 63 and the 3rd throttling stop valve 64, and the oil outlet 61c of shuttle valve 61 is communicated with the control port 10a of the first hydraulic ram 10 by reducing valve 62, pilot-operated type pilot operated directional control valve 63 and the 3rd throttling stop valve 64 successively.It should be noted that, the 3rd throttling stop valve 64 is normally open.
In the present embodiment, the first hydraulic control system can also comprise manual pump 71, check valve 72, the first by pass valve 73, and the 4th throttling stop valve 74, the oil inlet 71a of manual pump 71 is communicated with fuel tank 4, the oil outlet 71b of manual pump 71 is communicated with the oil inlet 72a of check valve 72, the oil outlet 72b of check valve 72 is communicated with the control port 10a of the first hydraulic ram 10 by the 4th throttling stop valve 74, the oil inlet 73a of the first by pass valve 73, the first control port 73b of the first by pass valve 73 is communicated with the oil outlet 72b of check valve 72 respectively, the oil outlet 73c of the first by pass valve 73 is communicated with fuel tank 4.When the master control oil path failure of HM Hydraulic Motor 30 or brake control valve group fault, manual pump can manually be controlled the first hydraulic ram, and then speed-down braking mechanism is manually controlled.It should be noted that, the 4th throttling stop valve 74 is normally off.
In the present embodiment, the first hydraulic control system can also comprise the 5th throttling stop valve 80, and the first actuator port 30a of HM Hydraulic Motor 30 is communicated with the second actuator port 30b of HM Hydraulic Motor 30 by the 5th throttling stop valve 80.It should be noted that, the 5th throttling stop valve 80 is normally off.
Understandably, when the 5th throttling stop valve is opened, two actuator ports of HM Hydraulic Motor (the first actuator port and the second actuator port) communicate, even if working connection breaks down, HM Hydraulic Motor also can freely be rotated.And by regulating the hydraulic fluid port size of the 5th throttling stop valve, rotating speed that can HM Hydraulic Motor regulates, and then the rotating speed of winch is controlled.
In the present embodiment, the first hydraulic control system can also comprise energy storage 5, energy storage 5 is connected on the oil circuit between the 4th throttling stop valve 74 and the oil outlet 61b of manual pump 61, and is also provided with the 6th throttling stop valve 90 on the oil circuit between energy storage 5 and the 4th throttling stop valve 74.It should be noted that, the 6th throttling stop valve 90 is normally off.
Understandably, energy storage can be realized the emergent release of winch, for winch safety device has increased one deck protection.
Further, the first hydraulic control system can also comprise that the 7th throttling stop valve 100, the seven throttling stop valves 100 are located on the oil circuit between energy storage 5 and the oil outlet 61b of manual pump 61.It should be noted that, the 7th throttling stop valve 100 is normally off.
In the present embodiment, the first hydraulic control system can also comprise the pressure relay 6 for detection of energy storage 5 internal pressures, and pressure relay 6 is communicated with energy storage 5.
Understandably, when the pressure of accumulator is during lower than setting value, pressure relay can carry out alarm staff and utilize manual pump oil-filled to energy storage, guarantees that the pressure of energy storage remains in the scope of setting.
In the present embodiment, the first hydraulic control system can also comprise the oil pressure indicator 7 for detection of the oil pressure of manual pump, and oil pressure indicator 7 is communicated with energy storage 5.
Understandably, oil pressure indicator is for monitoring and read the oil liquid pressure of oil pressure indicator place pipeline, guarantee that manual pump can make the first hydraulic ram and the action of the second hydraulic ram, and then open speed-down braking mechanism and ratchet and pawl arrangement, HM Hydraulic Motor can be rotated.
Alternatively, the first hydraulic control system can also comprise the 8th throttling stop valve 110, and oil pressure indicator 7 is communicated with energy storage 5 by the 8th throttling stop valve 110.It should be noted that, the 8th throttling stop valve 110 is normally open.
Understandably, the 8th throttling stop valve can effectively be protected oil pressure indicator, prevents the excessive damage oil pressure indicator of pressure.
In this kind of implementation, the first hydraulic control system can also comprise safety valve group 120, and energy storage 5 is communicated with fuel tank 4 by safety valve group 120.
Particularly, referring to Fig. 2, safety valve group 120 can comprise the 9th throttling stop valve 121 and the second by pass valve 122, energy storage 5 is communicated with fuel tank 4 by the 9th throttling stop valve 121, the first control port 122b of the oil inlet 122a of the second by pass valve 122, the second by pass valve 122 is communicated with energy storage 5 respectively, and the oil outlet 122 of the second by pass valve 122 is communicated with fuel tank 4.It should be noted that, the 9th throttling stop valve 121 is normally off.
Understandably, oil pressure indicator can show the pressure state of accumulator, and when the pressure of accumulator is larger, staff can carry out draining by the 9th throttling stop valve and the second by pass valve, guarantees that the pressure of energy storage remains in the scope of setting.
Below in conjunction with Fig. 1, simply introduce the principle of work of the safety protection device for winch that the utility model embodiment provides:
When second section flow shutoff valve 50 is opened, constant pressure source 3 is opened by the control port 20a control ratchet and pawl arrangement 2 of the second hydraulic ram 20.
When constant pressure source 3 fault, close second section flow shutoff valve 50, open first throttle shutoff valve 40, the oil pressure of HM Hydraulic Motor 30 is loaded into the control port 10a of the first hydraulic ram 10 and the control port 20a of the second hydraulic ram 20 by brake control valve group 60, speed-down braking mechanism 1 and ratchet and pawl arrangement 2 are opened, HM Hydraulic Motor 30 normal operations.
When working connection breaks down, open the 4th throttling stop valve 74, the 5th throttling stop valve 80 and the 6th throttling stop valve 90, close the 3rd throttling stop valve 64, energy storage 5 by pressure-loaded to the control port 10a of the first hydraulic ram 10 and the control port 20a of the second hydraulic ram 20, speed-down braking mechanism 1 and ratchet and pawl arrangement 2 are opened, and realize the emergent release of winch.
When energy storage 5 fault, close the 6th throttling stop valve 90, employing manual pump 71 is by pressure-loaded to the control port 10a of the first hydraulic ram 10 and the control port 20a of the second hydraulic ram 20, and speed-down braking mechanism 1 and ratchet and pawl arrangement 2 are opened, and realize the emergent release of winch.
It should be noted that, first throttle shutoff valve, second section flow shutoff valve, the 3rd throttling stop valve, the 4th throttling stop valve, the 5th throttling stop valve, the 6th throttling stop valve, the 7th throttling stop valve, the 8th throttling stop valve and the 9th throttling stop valve also can adopt common shutoff valve to substitute.
The utility model embodiment realizes braking to winch respectively by drag mechanism and ratchet and pawl arrangement, and for drag provides double shield, safety is higher.In addition, energy storage and manual pump etc. provides multiple emergent release, has further improved the safety of winch.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a safety protection device for winch, described device comprises the speed-down braking mechanism (1) for described winch is braked and drives first hydraulic ram (10) of described speed-down braking mechanism (1) action, it is characterized in that, described device also comprises the ratchet and pawl arrangement (2) for described winch is braked, drive second hydraulic ram (20) of described ratchet and pawl arrangement (2) action, control the first hydraulic control system of described the first hydraulic ram (10) action, and the second hydraulic control system of controlling described the second hydraulic ram (20), described the first hydraulic control system is communicated with the control port (10a) of described the first hydraulic ram (10), described the first hydraulic ram (10) and described speed-down braking mechanism (1) mechanical connection, described the second hydraulic control system is communicated with the control port (20a) of described the second hydraulic ram (20), described the second hydraulic ram (20) and described ratchet and pawl arrangement (2) mechanical connection.
2. device according to claim 1, it is characterized in that, described device also comprises first throttle shutoff valve (40), and the control port (10a) of described the first hydraulic ram (10) is communicated with the control port (20a) of described the second hydraulic ram (20) by described first throttle shutoff valve (40).
3. device according to claim 1 and 2, it is characterized in that, described the second hydraulic control system comprises constant pressure source (3) and second section flow shutoff valve (50), and described constant pressure source (3) is communicated with the control port (20a) of described the second hydraulic ram (20) by described second section flow shutoff valve (50).
4. device according to claim 1 and 2, it is characterized in that, described the first hydraulic control system comprises brake control valve group (60), described brake control valve group (60) comprises shuttle valve (61), first oil inlet (61a) of described shuttle valve (61) is communicated with first actuator port (30a) of described HM Hydraulic Motor (30), second oil inlet (61b) of described shuttle valve (61) is communicated with second actuator port (30b) of described HM Hydraulic Motor (30), the oil outlet (61c) of described shuttle valve (61) is communicated with the control port (10a) of described the first hydraulic ram (10).
5. device according to claim 4, it is characterized in that, described brake control valve group (60) also comprises reducing valve (62), pilot-operated type pilot operated directional control valve (63) and the 3rd throttling stop valve (64), and the oil outlet (61c) of described shuttle valve (61) is communicated with the control port (10a) of described the first hydraulic ram (10) by described reducing valve (62), described pilot-operated type pilot operated directional control valve (63) and described the 3rd throttling stop valve (64) successively.
6. device according to claim 4, it is characterized in that, described the first hydraulic control system also comprises manual pump (71), check valve (72), the first by pass valve (73), and the 4th throttling stop valve (74), the oil inlet (71a) of described manual pump (71) is communicated with fuel tank (4), the oil outlet (71b) of described manual pump (71) is communicated with the oil inlet (72a) of described check valve (72), the oil outlet (72b) of described check valve (72) is communicated with the control port (10a) of described the first hydraulic ram (10) by described the 4th throttling stop valve (74), the oil inlet (73a) of described the first by pass valve (73), first control port (73b) of described the first by pass valve (73) is communicated with the oil outlet (72b) of described check valve (72) respectively, the oil outlet (73c) of described the first by pass valve (73) is communicated with described fuel tank (4).
7. device according to claim 6, it is characterized in that, described the first hydraulic control system also comprises the 5th throttling stop valve (80), and first actuator port (30a) of described HM Hydraulic Motor (30) is communicated with second actuator port (30b) of described HM Hydraulic Motor (30) by described the 5th throttling stop valve (80).
8. device according to claim 7, it is characterized in that, described the first hydraulic control system also comprises energy storage (5), described energy storage (5) is connected on the oil circuit between described the 4th throttling stop valve (74) and the oil outlet (61b) of described manual pump (61), and is also provided with the 6th throttling stop valve (90) on the oil circuit between described energy storage (5) and described the 4th throttling stop valve (74).
9. device according to claim 8, is characterized in that, described the first hydraulic control system also comprises the pressure relay (6) for detection of described energy storage (5) internal pressure.
10. device according to claim 7, is characterized in that, described the first hydraulic control system also comprises the oil pressure indicator (7) for detection of the oil pressure of described manual pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034030.XU CN203754325U (en) | 2014-01-20 | 2014-01-20 | Safety protection device for winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034030.XU CN203754325U (en) | 2014-01-20 | 2014-01-20 | Safety protection device for winch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203754325U true CN203754325U (en) | 2014-08-06 |
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ID=51249624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420034030.XU Expired - Fee Related CN203754325U (en) | 2014-01-20 | 2014-01-20 | Safety protection device for winch |
Country Status (1)
| Country | Link |
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| CN (1) | CN203754325U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106144937A (en) * | 2016-08-16 | 2016-11-23 | 武汉船用机械有限责任公司 | Band brake hydraulic emergency system |
| CN106517019A (en) * | 2016-12-26 | 2017-03-22 | 上海豪高机电科技有限公司 | Hydraulic control system for winch |
| CN107188061A (en) * | 2016-03-15 | 2017-09-22 | 辽宁陆海石油装备研究院有限公司 | A kind of pneumatic man-riding winch's control system |
| CN108105179A (en) * | 2017-11-09 | 2018-06-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of Hawser winch |
| CN111288029A (en) * | 2020-01-22 | 2020-06-16 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
| CN111623002A (en) * | 2020-06-28 | 2020-09-04 | 河南卫华特种车辆有限公司 | Multipurpose emergency power unit |
| CN115180547A (en) * | 2022-06-08 | 2022-10-14 | 武汉船用机械有限责任公司 | Hydraulic control system for winch |
-
2014
- 2014-01-20 CN CN201420034030.XU patent/CN203754325U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188061A (en) * | 2016-03-15 | 2017-09-22 | 辽宁陆海石油装备研究院有限公司 | A kind of pneumatic man-riding winch's control system |
| CN106144937A (en) * | 2016-08-16 | 2016-11-23 | 武汉船用机械有限责任公司 | Band brake hydraulic emergency system |
| CN106517019A (en) * | 2016-12-26 | 2017-03-22 | 上海豪高机电科技有限公司 | Hydraulic control system for winch |
| CN108105179A (en) * | 2017-11-09 | 2018-06-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of Hawser winch |
| CN111288029A (en) * | 2020-01-22 | 2020-06-16 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
| CN111288029B (en) * | 2020-01-22 | 2022-10-04 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
| CN111623002A (en) * | 2020-06-28 | 2020-09-04 | 河南卫华特种车辆有限公司 | Multipurpose emergency power unit |
| CN115180547A (en) * | 2022-06-08 | 2022-10-14 | 武汉船用机械有限责任公司 | Hydraulic control system for winch |
| CN115180547B (en) * | 2022-06-08 | 2024-03-22 | 武汉船用机械有限责任公司 | Hydraulic control system for winch |
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| 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: 20140806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |