CN220201211U - Hydraulic energy storage buffer device for offshore crane - Google Patents
Hydraulic energy storage buffer device for offshore crane Download PDFInfo
- Publication number
- CN220201211U CN220201211U CN202321635049.5U CN202321635049U CN220201211U CN 220201211 U CN220201211 U CN 220201211U CN 202321635049 U CN202321635049 U CN 202321635049U CN 220201211 U CN220201211 U CN 220201211U
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- Prior art keywords
- oil
- energy storage
- oil cylinder
- buffering
- pipe
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- 238000004146 energy storage Methods 0.000 title claims abstract description 35
- 239000012536 storage buffer Substances 0.000 title claims description 10
- 239000000872 buffer Substances 0.000 claims abstract description 30
- 230000003139 buffering effect Effects 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 58
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 241000288140 Gruiformes Species 0.000 description 37
- 239000000725 suspension Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 241000124872 Grus grus Species 0.000 description 1
- 240000001398 Typha domingensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Jib Cranes (AREA)
Abstract
The hydraulic energy storage buffering device for the offshore crane comprises an energy storage structure and a buffering oil cylinder which are connected through an oil pipe, wherein the energy storage structure comprises an energy storage device and a connecting end which are connected with each other, an oil filling pipe and an oil discharging pipe are arranged on the connecting end, the energy storage device is connected with a hydraulic system of the crane through the oil filling pipe and the oil discharging pipe, and the oil pipe is connected with the connecting end and the buffering oil cylinder; the buffer oil cylinder comprises a piston rod and an oil cylinder cavity, the oil cylinder cavity comprises a rod cavity and a rodless cavity, the rod cavity is connected with the energy accumulator through the oil pipe, and the rodless cavity is communicated with the atmosphere through a muffler arranged on the outer surface of the buffer oil cylinder. The utility model has simple structure and convenient installation, can be used for any large-tonnage offshore crane, and reduces impact load in the hoisting operation process.
Description
Technical Field
The utility model belongs to the field of ship transportation, and particularly relates to a hydraulic energy storage buffer device for an offshore crane.
Background
In the specifications of the class society, the marine crane is classified into a general crane and an offshore crane according to the working environment of the crane. The common crane is mainly used for the operation in harbors or in shielded water areas, and the sea surface of the water areas is calm; offshore cranes are used for open water operations, where sea conditions typically result in very significant motions of the vessel or offshore unit, and wind forces are typically greater than cattail class 2 (greater than 3 m/s). When an offshore crane operates under such working conditions, in order to avoid the impact between the deck and the cargo caused by the action of sea waves when the winch just lifts the cargo off the deck, the minimum lifting speed of the winch must meet certain requirements. According to the measurement, when the wave height is 2.5M, the minimum lifting speed of the winch is not lower than 24M/MIN.
In the process of hoisting operation of a large-tonnage offshore crane under high sea conditions, when the winch suddenly stops in a high-speed winding and unwinding state, a large inertial impact force acts on the winch steel wire rope, so that the steel wire rope and a brake of the winch bear a large impact load, and in order to ensure the safety coefficient of the strength of the winch under the impact load, parts such as gears, the brake and a wall frame of the winch are required to be designed to be heavy. Meanwhile, the impact load can be frequently transmitted to a suspension arm, an oil cylinder and other mechanisms of the crane, so that the overall safety and the service life of the crane are reduced.
Disclosure of Invention
The utility model aims to provide a hydraulic energy storage buffer device for an offshore crane, which aims to solve the technical problem of reducing impact load of a large-tonnage offshore crane in the process of lifting operation.
In order to achieve the above purpose, the hydraulic energy storage buffer device for the offshore crane has the following specific technical scheme:
a hydraulic energy storage buffer device for an offshore crane comprises an energy storage structure and a buffer cylinder which are connected through an oil pipe,
the energy storage structure comprises an energy accumulator and a connecting end which are connected with each other, wherein an oil filling pipe and an oil discharging pipe are arranged on the connecting end, the energy accumulator is connected with a hydraulic system of the crane through the oil filling pipe and the oil discharging pipe, and the oil passing pipe is connected with the connecting end and the buffer oil cylinder;
the buffer oil cylinder comprises a piston rod and an oil cylinder cavity, the oil cylinder cavity comprises a rod cavity and a rodless cavity, the rod cavity is connected with the energy accumulator through the oil pipe, and the rodless cavity is communicated with the atmosphere through a muffler arranged on the outer surface of the buffer oil cylinder.
The air bag type energy accumulator is adopted, an air bag is arranged in the energy accumulator, inert gas is filled in the air bag, and hydraulic oil is filled outside the air bag.
In order to observe the working pressure of the buffer system, a pressure gauge is arranged on the connecting end, and the pressure gauge is connected with the connecting end through a pressure gauge valve.
For better realization buffer cylinder is connected with the davit and the movable pulley of offshore crane, the piston rod top of buffer cylinder is provided with first connecting hole, the other end that buffer cylinder corresponds is provided with the second connecting hole, buffer cylinder passes through first connecting hole and is connected with the movable pulley of crane, buffer cylinder passes through the second connecting hole and crane.
In order to further realize the connection between the piston rod and the movable pulley of the crane, the buffer oil cylinder is connected with the movable pulley of the crane through a steel wire rope, one end of the steel wire rope is provided with a hook, and the hook is connected with the second connecting hole.
In order to realize the pressure release of the buffer device, the oil drain pipe is provided with a stop valve, and the pressure in the buffer device can be released by opening the stop valve.
In order to better realize energy storage and buffering, a certain pre-pressure is provided, and hydraulic oil is pre-filled in the energy accumulator.
In order to prolong the service life of the buffer oil cylinder, the piston rod of the buffer oil cylinder is in a fully retracted state when the buffer oil cylinder is not in operation, the buffer oil cylinder is immersed in oil liquid and cannot be corroded, the piston rod is initially positioned in the oil cylinder cavity, and the hydraulic oil is filled in the rod cavity.
The beneficial effects are that:
the buffer device can well reduce the impact force of impact load when facing to large hoisting operation, and ensures the service lives of the steel wire rope and the winch.
The buffering device can be directly arranged at the tail end of the suspension arm of the crane, the energy storage structure and the buffering oil cylinder are fixed at the tail end of the suspension arm, the piston rod is connected with the movable pulley of the crane, the oil charging pipe and the oil discharging pipe are connected with the hydraulic system of the crane, the structure is simple and compact, the additional pulley is not required to be added, the trend of a steel wire rope and the structure of the suspension arm are not required to be changed, the existing bracket of the suspension arm can be utilized for installation and maintenance, and the buffering device can be suitable for any crane device which needs to realize the heavy buffering of the suspension arm.
Drawings
FIG. 1 is a schematic diagram of a hydraulic energy storage buffer device for an offshore crane according to the present utility model;
FIG. 2 is a schematic diagram of the hydraulic energy storage buffer device of the present utility model;
the figure indicates: 100. an energy storage structure; 110. a connection end; 111. a pressure gauge; 120. an accumulator; 130. an oil filling pipe; 140. an oil drain pipe; 141. a stop valve; 200. a buffer cylinder; 210. a piston rod; 211. a first connection hole; 212. a second connection hole; 220. an oil cylinder cavity; 221. a rod cavity is arranged; 222. a rodless cavity; 230. a muffler; 300. oil pipe; 400. a crane boom; 500. a movable pulley.
Detailed Description
The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.
Implementation example:
as shown in fig. 1, a hydraulic energy storage buffering device for an offshore crane comprises an energy storage structure 100 and a buffering cylinder 200 which are connected through a communication pipe.
The energy storage structure 100 comprises a connecting end 110 and an energy accumulator 120, wherein the connecting end 110 is connected with the energy accumulator 120 through a flange, the oil filling pipe 130, the oil discharging pipe 140 and the oil passing pipe 300 are connected with the energy accumulator 120 through the connecting end 110, the oil filling pipe 130 and the oil discharging pipe 140 are connected with a hydraulic system of a crane, an additional power source is not required to be added, and meanwhile, the energy storage structure is convenient to install on the crane without a buffer device due to the fact that an electric control part is not arranged. The connection end 110 is also provided with a pressure gauge 111 for observing the operating pressure of the buffer system, and when the pressure is too high, the pressure can be released through a stop valve 141 on the oil drain pipe 140. The air bag is arranged in the energy accumulator cavity 120, nitrogen is filled in the air bag, and hydraulic oil is filled outside the air bag to compress the air bag, so that a buffering effect is achieved.
The buffer cylinder 200 comprises a piston rod 210 and a cylinder cavity 220, the cylinder cavity 220 is connected to the boom 400 through a second connecting hole 212, a rod cavity 221 and a rodless cavity 222 are formed in the cylinder cavity 220, the oil pipe 300 is connected to the rod cavity 221, a muffler 230 is arranged on the outer surface of the rodless cavity 222, and the muffler 230 is communicated with the atmosphere to effectively enlarge the working area of the buffer cylinder. The top end of the piston rod 210 is connected with the movable pulley of the crane through the first connecting hole 211, and when the crane is not in operation, the piston rod 210 is completely retracted under the action of pressure oil and soaked in oil liquid, so that corrosion is avoided.
Compared with the conventional spring buffering and rubber buffering, the hydraulic energy storage buffering can conveniently and accurately adjust the buffering force, and the overall working soft and hard characteristics of the system are adjusted so as to better match winches with different loads.
As shown in fig. 2, the energy storage structure 100 may be fixedly installed at a side of the crane boom 400, and the buffer cylinder 200 is fixed under the end of the crane boom 400 through the second connection hole 212 and connected with the movable pulley 500 through the first connection hole 211.
When the crane pulley 500 is in use, when the rated load is suspended on the crane pulley 500 and is static or moves at a low speed, the piston rod 210 of the buffer oil cylinder 200 is completely retracted under the action of pressure oil, when the crane winch is fully loaded and is in high-speed retraction and stopping, the piston rod 210 is pulled out due to the fact that the tension of the steel wire rope is suddenly increased under the action of inertia impact force, hydraulic oil with the rod cavity 221 is compressed and conveyed into the energy accumulator 120 through the oil pipe 300, nitrogen in the air bag is compressed, and impact load generated on the steel wire rope is absorbed by the energy accumulator 100, so that the buffer effect is achieved.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A hydraulic energy storage buffer device for an offshore crane is characterized by comprising an energy storage structure and a buffer cylinder which are connected through an oil pipe,
the energy storage structure comprises an energy accumulator and a connecting end which are connected with each other, wherein an oil filling pipe and an oil discharging pipe are arranged on the connecting end, the energy accumulator is connected with a hydraulic system of the crane through the oil filling pipe and the oil discharging pipe, and the oil passing pipe is connected with the connecting end and the buffer oil cylinder;
the buffer oil cylinder comprises a piston rod and an oil cylinder cavity, the oil cylinder cavity comprises a rod cavity and a rodless cavity, the rod cavity is connected with the energy accumulator through the oil pipe, and the rodless cavity is communicated with the atmosphere through a muffler arranged on the outer surface of the buffer oil cylinder.
2. The hydraulic energy storage buffer device for an offshore crane according to claim 1, wherein an air bag is arranged in the energy storage device, inert gas is filled in the air bag, and hydraulic oil is filled outside the air bag.
3. The hydraulic energy storage buffering device for an offshore crane according to claim 1, wherein a pressure gauge is arranged on the connecting end, and the pressure gauge is connected with the connecting end through a pressure gauge valve.
4. The hydraulic energy storage buffering device for an offshore crane according to claim 1, wherein a first connecting hole is formed in the top end of a piston rod of the buffering oil cylinder, a second connecting hole is formed in the other end of the buffering oil cylinder, the buffering oil cylinder is connected with a movable pulley of the crane through the first connecting hole, and the buffering oil cylinder is connected with the crane through the second connecting hole.
5. The hydraulic energy storage buffering device for an offshore crane according to claim 4, wherein the buffering oil cylinder is connected with a movable pulley of the crane through a steel wire rope, one end of the steel wire rope is provided with a hook, and the hook is connected with the second connecting hole.
6. The hydraulic energy storage buffering device for an offshore crane according to claim 1, wherein a stop valve is arranged on the oil drain pipe, and the pressure in the buffering device can be released by opening the stop valve.
7. The hydraulic energy storage buffering device for an offshore crane according to claim 1, wherein the accumulator is pre-charged with hydraulic oil.
8. The hydraulic energy storage buffering device for an offshore crane according to claim 1, wherein the piston rod is initially positioned in the cylinder cavity, and the rod cavity is filled with hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321635049.5U CN220201211U (en) | 2023-06-26 | 2023-06-26 | Hydraulic energy storage buffer device for offshore crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321635049.5U CN220201211U (en) | 2023-06-26 | 2023-06-26 | Hydraulic energy storage buffer device for offshore crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220201211U true CN220201211U (en) | 2023-12-19 |
Family
ID=89146790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321635049.5U Active CN220201211U (en) | 2023-06-26 | 2023-06-26 | Hydraulic energy storage buffer device for offshore crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220201211U (en) |
-
2023
- 2023-06-26 CN CN202321635049.5U patent/CN220201211U/en active Active
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