CN204917706U - Marine hydraulic crane load -lifting height stop device - Google Patents
Marine hydraulic crane load -lifting height stop device Download PDFInfo
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- CN204917706U CN204917706U CN201520606069.9U CN201520606069U CN204917706U CN 204917706 U CN204917706 U CN 204917706U CN 201520606069 U CN201520606069 U CN 201520606069U CN 204917706 U CN204917706 U CN 204917706U
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- over valve
- oil inlet
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Abstract
The utility model provides a load -lifting height stop device of marine hydraulic crane, including the davit, the one end of davit is connected with hydraulic winch, the last wire rope of hydraulic winch passes through fixed pulley and movable pulley, and connect on the davit after passing the weight, the handle of weight and bi -pass switching -over valve passes through the conductor rope and is connected, the oil inlet of bi -pass switching -over valve passes through the oil circuit with hydraulic winch's oil inlet and is connected, the oil -out of bi -pass switching -over valve passes through the oil circuit and directly is connected with the oil tank, the handle of bi -pass switching -over valve is in normally closed state because of the tensile force of weight, hydraulic oil gets into hydraulic winch's oil inlet, hydraulic winch has carried out and has risen the action, the corresponding up promotion of movable pulley, when the movable pulley bumps against the weight, with weight jack -up, the handle of bi -pass switching -over this moment valve no longer receives the pulling force of weight and is in open state, the oil tank is directly got back to and reentrant hydraulic winch's oil inlet not through the switching -over valve to hydraulic oil, hydraulic winch has stopped rising, the utility model discloses make and the simple installation, long service life, the reliability is high.
Description
Technical field
The utility model relates to ship hydraulic hoisting crane technical field, particularly relates to a kind of ship hydraulic lifting height of crane inhibiting device.
Background technology
Ship hydraulic hoisting crane is the special hoisting crane of one performing hauling operation at sea in environment, is mainly used in the vital task such as input and recovery of the transport transfer of goods between naval vessel, replenishment at sea, under-water operation equipment.Requirement according to " GB/T3811-2008 hoist design specification ": " lifting mechanism all should install hoisting limiter.When load-engaging device rises to the upper extreme position of design code, automatically should be able to cut off and start propulsion source "; the hoisting limiter that existing technology adopts is screw hoisting limiter; install drive screw in drum shaft, drive screw has nut, and nut horizontally slips because of the rotation of reel; when sliding into end position; then bump against limit switch, system unloaded, to limit the height of crane hoisting.But in current existing technology, the making and installation of screw rod and nut compares wastes time and energy, and this limit method lost efficacy because rubbing frequently, and reliability is low.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of ship hydraulic lifting height of crane inhibiting device, and making and installation is easy, long service life, and reliability is high.
In order to achieve the above object, the technical solution of the utility model is achieved in that
A kind of device for limiting lifting attitude of winding of ship hydraulic hoisting crane, comprise arm 6, one end of arm 6 is connected with hydraulic wireline winch 7, the other end of arm 6 is connected with fixed pulley 9, steel rope 5 on hydraulic wireline winch 7 is by fixed pulley 9 and movable pulley 10, and through being connected on arm 6 after the through hole of weight 4, movable pulley 10 is provided with hook 11, the top of weight 4 is connected by conductor rope 3 with the handle of two way selected valve 1, conductor rope 3 is fixed by plural guide wheel 2, two way selected valve 1 and guide wheel 2 are fixed on the side of arm 6
The return opening of hydraulic wireline winch 7 is connected with the first oil outlet of four-way change-over valve 12, the oil inlet of hydraulic wireline winch 7 is connected with the second oil outlet of four-way change-over valve 12, the oil inlet of four-way change-over valve 12 is connected with the oil outlet of Hydraulic Pump 13, the return opening of four-way change-over valve 12 is connected with fuel tank 8, the oil inlet of Hydraulic Pump 13 is connected with fuel tank 8, the input shaft of Hydraulic Pump 13 is connected by shaft coupling transmission with the output shaft of motor 14, the oil inlet of two way selected valve 1 is connected with the oil inlet of hydraulic wireline winch 7, and the oil outlet of two way selected valve 1 is connected with fuel tank 8.
Advantage of the present utility model: realized the control operated to hydraulic wireline winch 7 by weight 4 and two way selected valve 1, weight 4 is easy to manufacture and install with two way selected valve 1, and long service life, reliability is high.
Accompanying drawing explanation
Fig. 1 is scheme of installation of the present utility model.
Fig. 2 is hydraulic schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present utility model and principle of work are described in detail.
With reference to Fig. 1, a kind of device for limiting lifting attitude of winding of ship hydraulic hoisting crane, comprise arm 6, one end of arm 6 is connected with hydraulic wireline winch 7, the other end of arm 6 is connected with fixed pulley 9, steel rope 5 on hydraulic wireline winch 7 is by fixed pulley 9 and movable pulley 10, and through being connected on arm 6 after the through hole of weight 4, movable pulley 10 is provided with hook 11, the top of weight 4 is connected by conductor rope 3 with the handle of two way selected valve 1, conductor rope 3 is fixed by plural guide wheel 2, and two way selected valve 1 and guide wheel 2 are fixed on the side of arm 6.
With reference to Fig. 2, the return opening of hydraulic wireline winch 7 is connected with the first oil outlet of four-way change-over valve 12, the oil inlet of hydraulic wireline winch 7 is connected with the second oil outlet of four-way change-over valve 12, the oil inlet of four-way change-over valve 12 is connected with the oil outlet of Hydraulic Pump 13, the return opening of four-way change-over valve 12 is connected with fuel tank 8, the oil inlet of Hydraulic Pump 13 is connected with fuel tank 8, the input shaft of Hydraulic Pump 13 is connected by shaft coupling transmission with the output shaft of motor 14, the oil inlet of two way selected valve 1 is connected with the oil inlet of hydraulic wireline winch 7, and the oil outlet of two way selected valve 1 is connected with fuel tank 8.
Principle of work of the present utility model is:
Actuating motor 14, motor 14 drives Hydraulic Pump 13 to work, hydraulic oil is through entering the oil inlet of four-way change-over valve 12 through Hydraulic Pump 13 from fuel tank 8, the handle handling four-way change-over valve 12 is in the position that hoists, then hydraulic oil flows out from the second oil outlet of four-way change-over valve 12, because the handle of two way selected valve 1 is in normally off because of the pulling force effect of weight 4, so hydraulic oil is through the oil inlet of hydraulic wireline winch 7, the return opening of hydraulic wireline winch 7, first oil outlet of four-way change-over valve 12, the return opening of four-way change-over valve 12 flows to fuel tank 8, hydraulic wireline winch 7 is made to perform the action that hoists, movable pulley 10 and hook 11 hang with goods and up promote accordingly, when movable pulley 10 bumps against weight 4, by weight 4 jack-up, now the handle of two way selected valve 1 is no longer in normally open by the pulling force of weight 4, hydraulic oil is directly got back to fuel tank 8 through two way selected valve 1 and no longer enters the oil inlet of hydraulic wireline winch 7, hydraulic wireline winch 7 stops hoisting action.
Claims (1)
1. the device for limiting lifting attitude of winding of a ship hydraulic hoisting crane, comprise arm (6), one end of arm (6) is connected with hydraulic wireline winch (7), the other end of arm (6) is connected with fixed pulley (9), it is characterized in that: the steel rope (5) on hydraulic wireline winch (7) is by fixed pulley (9) and movable pulley (10), and through being connected on arm (6) after the through hole of weight (4), movable pulley (10) is provided with hook (11), the top of weight (4) is connected by conductor rope (3) with the handle of two way selected valve (1), conductor rope (3) is fixed by plural guide wheel (2), two way selected valve (1) and guide wheel (2) are fixed on the side of arm (6),
The return opening of hydraulic wireline winch (7) is connected with the first oil outlet of four-way change-over valve (12), the oil inlet of hydraulic wireline winch (7) is connected with the second oil outlet of four-way change-over valve (12), the oil inlet of four-way change-over valve (12) is connected with the oil outlet of Hydraulic Pump (13), the return opening of four-way change-over valve (12) is connected with fuel tank (8), the oil inlet of Hydraulic Pump (13) is connected with fuel tank (8), the input shaft of Hydraulic Pump (13) is connected by shaft coupling transmission with the output shaft of motor (14), the oil inlet of two way selected valve (1) is connected with the oil inlet of hydraulic wireline winch (7), the oil outlet of two way selected valve (1) is connected with fuel tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606069.9U CN204917706U (en) | 2015-08-12 | 2015-08-12 | Marine hydraulic crane load -lifting height stop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606069.9U CN204917706U (en) | 2015-08-12 | 2015-08-12 | Marine hydraulic crane load -lifting height stop device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204917706U true CN204917706U (en) | 2015-12-30 |
Family
ID=54966854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520606069.9U Expired - Fee Related CN204917706U (en) | 2015-08-12 | 2015-08-12 | Marine hydraulic crane load -lifting height stop device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204917706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429913A (en) * | 2016-11-30 | 2017-02-22 | 长治清华机械厂 | Steel wire rope lifting protection device with height limiting switch |
-
2015
- 2015-08-12 CN CN201520606069.9U patent/CN204917706U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429913A (en) * | 2016-11-30 | 2017-02-22 | 长治清华机械厂 | Steel wire rope lifting protection device with height limiting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180812 |