CN203130633U

CN203130633U - Boat davit oil cylinder

Info

Publication number: CN203130633U
Application number: CN 201320047165
Authority: CN
Inventors: 汪立平
Original assignee: Jiangsu Hengli High Pressure Oil Cylinder Co Ltd
Current assignee: Jiangsu Hengli Hydraulic Co Ltd
Priority date: 2013-01-28
Filing date: 2013-01-28
Publication date: 2013-08-14
Anticipated expiration: 2023-01-28

Abstract

The utility model discloses a boat davit oil cylinder which is used for rapidly pushing out a lifeboat installed on a large ship boat davit and placing the lifeboat in the sea. The boat davit oil cylinder comprises a cylinder body, a cylinder bottom, a piston rod and a piston, wherein a guiding sleeve is arranged at the position, located at an extending end of the piston rod, of the inner wall of the cylinder body, the piston rod is matched with a guiding sleeve inner hole in a sliding mode, and the external end portion of the piston rod is connected with a rod head of a built-in knuckle bearing. The interior of the cylinder body is divided into a rodless cavity and a rod cavity by the piston, through a pipeline, the rodless cavity is connected with an energy accumulator capable of injecting nitrogen to the rodless cavity, and a sealing ring made of nitrile rubber is arranged on the outer wall of the piston in an embedded mode. Due to the face that the nitrogen is in advance injected into the energy accumulator communicated with the rodless cavity of the oil cylinder, and after air and oil are mixed, high pressure generated through compression of the nitrogen is used for pushing the piston rod to stretch out, therefore when a marine accident occurs, even if under the conditions of interruption of power supply, the lifeboat can be pushed out rapidly and placed in the sea, and people in the accident can evacuate a ship in the accident rapidly.

Description

The keel block oil cylinder

Technical field

The utility model relates to technical field of hydraulic oil cylinder, especially a kind of keel block oil cylinder.

Background technique

On large ships such as oil tanker, cargo ship, generally on boats and ships, all have salvage boat, when casualty takes place, be convenient to crewman, the timely disembark of passenger and obtain relief.The main mechanical type laying method of salvage boat in the past, adopting dependence manually to take out of the back is put in the sea with loop wheel machine, take place under the situation that time is life of back in accident, need and salvage boat to be put in the sea rapidly, so that people are in time out of danger, this mechanical type modes of emplacement, obviously not only time-consuming but also require great effort.When casualty takes place, lose power supply usually simultaneously, caused the machinery that power start need be arranged to use, relied on manpower transport's salvage boat fully, incured loss through delay valuable rescue time.

The model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, a kind of keel block oil cylinder is provided, casualty taking place and can put down salvage boat fast under powering-off state, win rescue time.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of keel block oil cylinder, the salvage boat that is used for being installed on the large ship keel block is released fast and is placed in the sea, comprise cylinder body, cylinder bottom, piston rod and piston, described inboard wall of cylinder block is positioned at piston rod external part place and is provided with guide sleeve, piston rod and guide sleeve endoporus are slidingly matched, the piston rod outer end is connected with the bar head of built-in joint shaft bearing, cylinder interior is divided into rodless cavity and rod chamber by piston, the rodless cavity pipeline is connected with the accumulator that can feed nitrogen to rodless cavity, and piston outer wall embeds and is provided with the seal ring that adopts nitrile rubber to make.

Described accumulator comprises housing, divides the front cover and the rear end cover that are located at the housing two ends, is connected with the oil pipe that the nitrogen that will store in the housing feeds rodless cavity between front cover and the cylinder bottom.

The beneficial effects of the utility model are: the utility model by with accumulator that oil cylinder rodless cavity is communicated with in charge into nitrogen in advance, after utilizing oil gas to mix, the compressed high pressure that produces of nitrogen, promote stretching out of piston rod, thereby running into casualty, even under powering-off state, also can rapidly salvage boat be released and be placed in the sea, make wrecked personnel withdraw the accident ship fast.

Description of drawings

Below in conjunction with drawings and embodiments the utility model is further specified.

Fig. 1 is structural representation of the present utility model.

1. cylinder bodies, 2. cylinder bottoms, 3. piston rods, 4. pistons, 5. guide sleeves, 6. joint shaft bearings, 7. bar heads, 8. rodless cavities, 9. rod chambers, 10. accumulators, 11. seal rings, 20. housings, 21. front covers, 22. rear end covers, 23. oil pipes among the figure

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

A kind of keel block oil cylinder as shown in Figure 1, the salvage boat that is used for being installed on the large ship keel block is released fast and is placed in the sea.Comprise cylinder body 1, cylinder bottom 2, piston rod 3 and piston 4, piston 4 is installed in the tail end that piston rod 3 is positioned at cylinder body 1, piston 4 peripheries and cylinder body 1 inwall are slidingly matched, described cylinder body 1 inwall is positioned at piston rod 3 external part places and is provided with guide sleeve 5, piston rod 3 is slidingly matched with guide sleeve 5 endoporus, and the outer end that piston rod 3 stretches out cylinder body 1 is connected with the bar head 7 of built-in joint shaft bearing 6.

The inside of cylinder body 1 is divided into rodless cavity 8 and rod chamber 9 by piston 4, rodless cavity 8 pipelines are connected with the accumulator 10 that can feed nitrogen to rodless cavity 8, described accumulator 10 comprises housing 20, divides the front cover 21 and the rear end cover 22 that are located at housing 20 two ends, be connected oil pipe 23 between front cover 21 and the cylinder bottom 1, by oil pipe 23 nitrogen of storage in the housing 20 of accumulator 10 fed in the rodless cavities 8 and mix with hydraulic oil.

Outer wall at piston 4 embeds the seal ring 11 that is provided with the making of employing nitrile rubber, because nitrile rubber has excellent water tolerance, tightness and high adhesive property, therefore can realize high performance sealing effect between rodless cavity 8 and the rod chamber 9, prevent that oil gas is mobile and influence the normal use of oil cylinder at rodless cavity 8 and rod chamber 9.

When this keel block oil cylinder used, by a certain amount of nitrogen of preliminary filling in accumulator 10, under the situation that does not need the external force effect, the high pressure that relies on nitrogen compression back to produce promoted piston rod 3 and stretches out.Working procedure is as follows: be the nitrogen of 1Bar to accumulator 10 interior preliminary filling pressure at first, this moment, piston rod 3 stretched out outside the cylinder body 1 under nitrogen pressure promotes fully; Add high-pressure and hydraulic oil then in rod chamber 9, promote in piston rod 3 retract cylinder 1, nitrogen is compressed, and rodless cavity 8 internal pressures increase; When needs put down salvage boat, the start-up operation button poured in the rodless cavity 8 nitrogen in the accumulator 10, promotes piston rod 3 and stretches out fully, salvage boat is released and is placed into marine.

Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. keel block oil cylinder, the salvage boat that is used for being installed on the large ship keel block is released fast and is placed in the sea, comprise cylinder body (1), cylinder bottom (2), piston rod (3) and piston (4), it is characterized in that: described cylinder body (1) inwall is positioned at piston rod (3) external part place and is provided with guide sleeve (5), piston rod (3) is slidingly matched with guide sleeve (5) endoporus, piston rod (3) outer end is connected with the bar head (7) of built-in joint shaft bearing (6), cylinder body (1) is inner to be divided into rodless cavity (8) and rod chamber (9) by piston (4), rodless cavity (8) pipeline is connected with the accumulator (10) that can feed nitrogen to rodless cavity (8), and piston (4) outer wall embeds and is provided with the seal ring (11) that adopts nitrile rubber to make.

2. keel block oil cylinder according to claim 1, it is characterized in that: described accumulator (10) comprises housing (20), divides the front cover (21) and the rear end cover (22) that are located at housing (20) two ends, is connected with the oil pipe (23) that the nitrogen of storage in the housing (20) is fed rodless cavity (8) between front cover (21) and the cylinder bottom (1).