CN219860235U - Emergency lowering system of marine hydraulic crane - Google Patents
Emergency lowering system of marine hydraulic crane Download PDFInfo
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- CN219860235U CN219860235U CN202320957514.0U CN202320957514U CN219860235U CN 219860235 U CN219860235 U CN 219860235U CN 202320957514 U CN202320957514 U CN 202320957514U CN 219860235 U CN219860235 U CN 219860235U
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- crane
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- 239000003921 oil Substances 0.000 claims abstract description 76
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses an emergency lowering system of a marine hydraulic crane, which comprises a manual pump and a hydraulic pump station, wherein an oil outlet of the manual pump is connected in parallel with an oil outlet of the hydraulic pump station, so as to supply oil to the hydraulic system together, and after hydraulic oil passes through a manual valve, the hydraulic oil is supplied to a slewing gear, a manned/cargo dual-purpose winch and an amplitude-variable oil cylinder; the oil outlet of the manual pump is provided with a first quick connector, the winch is provided with a second quick connector which is respectively connected with a hydraulic hose, and the winch is supplied with oil by the manual pump when the crane loses pressure; the cargo winch comprises an electromagnetic valve, a balance valve, a brake and a hydraulic motor, wherein the electromagnetic valve is used for switching the cargo winch into a high-speed small-torque state so as to adapt to a cargo working mode, the balance valve is used for locking a load when the crane loses pressure, the brake controls the rotation of the hydraulic winch, and a hydraulic reversing valve is arranged between oil inlet and oil outlet of the hydraulic motor and used for controlling the communication of the oil inlet and the oil outlet of the hydraulic motor.
Description
Technical Field
The utility model relates to an emergency lowering system of a marine hydraulic crane.
Background
The hydraulic man/cargo carrying crane is one special equipment installed on ship for the transfer of man and cargo. The operator can choose the man/cargo mode of operation according to the actual lighterage requirements. According to the specifications of the ship industry related to the class society, when a hydraulic system pipeline is broken or pressure is lost due to other reasons, a cargo carrying crane can support the cargo and cannot fall; when the power supply is lost, the cargo crane can place the cargo in an emergency. In order to meet the requirements, all hydraulic actuating elements of the cargo carrying crane are directly provided with balance valves, so that the cargo is prevented from falling under the action of dead weight when a pipeline is broken; meanwhile, a manual pump is arranged on the crane body, an oil outlet of the manual pump is connected with an oil outlet of the plunger pump in parallel, oil is supplied to the hydraulic system together, when the cargo crane loses power supply, one operator shakes the manual pump, the manual pump supplies oil to the hydraulic system, and the other operator simultaneously operates the manual valve to control the variable-amplitude oil cylinder to retract, the boom to swing and the hoisting winch to be lowered, so that the cargo is safely lowered onto a deck.
However, according to specifications of the class society in the marine industry, the man-machine needs to consider higher safety. Thus, in addition to the conventional brakes, the hoisting winch is equipped with a redundant brake and can lower the load at a controlled rate in the event of any hydraulic line rupture or control system failure. The emergency lowering system of the cargo carrying crane obviously cannot meet the standard requirement of the manned crane, so that the emergency lowering system of the manned/cargo carrying dual-purpose crane is required to be invented, not only meets the standard requirement of the cargo carrying crane, but also meets the standard requirement of the manned crane, and the purpose of carrying people/cargo carrying dual-purpose of the same crane is achieved.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides an emergency lowering system of a marine hydraulic crane.
The emergency lowering system of the marine hydraulic crane comprises a manual pump and a hydraulic pump station, wherein an oil outlet of the manual pump is connected with an oil outlet of the hydraulic pump station in parallel, oil is supplied to a hydraulic system together, and hydraulic oil passes through a manual valve and then is supplied to a hydraulic executing element: the swinging device, the manned/cargo dual-purpose winch and the luffing cylinder supply oil to respectively drive the swinging of the suspension arm, the lifting of the steel wire rope and the luffing of the suspension arm; the oil outlet of the manual pump is provided with a first quick connector, the manned/cargo dual-purpose winch is provided with a second quick connector which is respectively connected with a hydraulic hose, and the manual pump supplies oil to the manned/cargo dual-purpose winch when the crane loses pressure;
the cargo winch comprises an electromagnetic valve, a balance valve, a brake and a hydraulic motor, wherein the electromagnetic valve is used for switching the cargo winch into a high-speed small-torque state so as to adapt to a cargo working mode, the balance valve is used for locking a load when the crane loses pressure, the brake controls the hydraulic winch to rotate, a shuttle valve II and a sequence valve are further arranged between the brake and an oil outlet of a manual pump and used for controlling the communication of a brake oil path, a hydraulic reversing valve is arranged between oil inlet and oil outlet of the hydraulic motor, and the hydraulic reversing valve is used for controlling the communication of the oil inlet and the oil outlet of the hydraulic motor.
As a further improvement, the first quick connector and the second quick connector are female connectors, and male connectors matched with the first quick connector and the second quick connector are arranged at two ends of the hydraulic hose.
As a further improvement, a throttle valve is arranged between the oil inlet and the oil outlet of the hydraulic motor and used for controlling the speed of the winch.
As a further development, a balancing valve is also provided on the winch for locking the winch.
As a further improvement, a one-way valve is also arranged on the descending oil way of the winch and is used for supplementing oil to the descending oil way.
As a further improvement, a shuttle valve I is arranged between the oil inlet and the oil outlet of the hydraulic motor.
The beneficial effects are that:
1. the utility model discloses an emergency lowering system of a hydraulic manned/cargo dual-purpose crane for a ship, which not only meets the standard requirement of the cargo crane, but also meets the standard requirement of the manned crane, thereby achieving the purpose of carrying people/cargo by the same crane.
2. The control valves of the hydraulic manned/cargo dual-purpose crane are integrated on the elements, the structure is compact, and no pipeline exists between the actuating element and the control valve, so that the control valve can act on the actuating element under any condition.
Drawings
FIG. 1 is a schematic view of the general structure of a marine hydraulic crane emergency lowering system;
FIG. 2 is a hydraulic schematic diagram of a marine hydraulic crane emergency lowering system;
1. the hydraulic system comprises a pump station 2, a manual pump 3, a manual valve 4, a slewing gear 5, a manned/cargo winch 6, a luffing cylinder 7, a first quick connector 8, a second quick connector 9, a shuttle valve 10, a one-way valve 11, a hydraulic reversing valve 12, a throttle valve 13, a sequence valve 14, a solenoid valve 15, a balance valve 16, a shuttle valve 17, a hydraulic motor 18 and a brake.
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.
As shown in fig. 1-2, the emergency lowering system of the marine hydraulic crane comprises a pump station 1, a manual pump 2, a manual valve 3, a rotary device 4, a manned/cargo dual-purpose winch 5, a luffing cylinder 6, a first quick connector 7, a second quick connector 8, a second shuttle valve 9, a one-way valve 10, a hydraulic reversing valve 11, a throttle valve 12, a sequence valve 13, an electromagnetic valve 14, a balance valve 15, a first shuttle valve 16, a hydraulic motor 17 and a brake 18.
The pump station 1 and the manual pump 2 provide power sources for the rotation of a slewing gear 4 of the crane, the retraction of a steel wire rope and the extension of an amplitude-variable oil cylinder 6 of a manned/cargo dual-purpose winch 5. The direction and speed control of the three actions is achieved by the hand valve 3 through the handle. The manual pump oil outlet and the control valve block of the manned/cargo dual-purpose winch are respectively provided with a quick connector, and the quick connector is a female quick connector, and the manual pump oil outlet and the control valve block of the manned/cargo dual-purpose winch are matched with a matched male quick connector when in use.
When the crane loses pressure for any reason, the hydraulic actuator: the slewing device 4, the manned/cargo dual-purpose winch 5 and the luffing cylinder 6 can support the load under the action of the balance valve so as to prevent falling injury. It should be noted that the control valves (including the balance valve) of the hydraulic actuator are all directly mounted on the body of the actuator, and no pipeline exists between the actuator and the control valve, so as to ensure that the control valve can act on the actuator in any situation.
When the crane suddenly breaks a pipeline and loses pressure, a special hydraulic hose (two ends of the hose are provided with male quick connectors) is needed to be used for lowering a load, one end of the special hydraulic hose is connected with a first quick connector 7 reserved at an oil outlet of the manual pump, and the other end of the special hydraulic hose is connected with a second quick connector 8 reserved at a manned/cargo winch; then only one operator is required to shake the manual pump, which supplies oil to the manned/cargo dual-purpose winch, so that the load can be lowered at a controlled speed.
The oil outlet of the manual pump 2 is connected with the oil outlet of the hydraulic pump station 1 in parallel, and oil is supplied to the hydraulic system together; after the hydraulic oil passes through the manual valve 3, the hydraulic oil is fed to a hydraulic actuator: the swinging device 4, the manned/cargo dual-purpose winch 5 and the luffing cylinder 6 are used for supplying oil to drive the swinging of the suspension arm, the lifting of the steel wire rope and luffing of the suspension arm respectively.
The default working mode of the crane is cargo carrying, when the cargo carrying working mode is needed, a person carrying button on the button box is pressed, the electromagnetic valve 14 is powered, the crane is subjected to acousto-optic warning, and the person carrying/cargo carrying dual-purpose winch 5 is switched to a high-speed small torque state so as to adapt to the cargo carrying working mode.
When the crane suddenly breaks the pipeline and loses pressure, the load is locked by the balance valve of the hydraulic actuator, and the crane cannot fall. When the load is to be placed down, a special hose equipped with a crane is needed to be connected with a quick connector at the position of an oil outlet of the manual pump and a quick connector at the position of the manned/cargo dual-purpose winch, then an operator shakes the manual pump, hydraulic oil at the oil outlet of the manual pump is conveyed to the manned/cargo dual-purpose winch through the special hose, so that a brake 18 of the manual pump is opened, an oil inlet and an oil outlet of a hydraulic motor 17 are communicated, the winch is in a floating state, and the winch is reversed under the action of the gravity of the load, so that the load is placed down at a controlled speed.
In an emergency state, hydraulic oil at an oil outlet of the manual pump sequentially passes through the shuttle valve II 9 and the sequence valve 13 to reach a brake 18 of the winch, the brake 18 is opened, and the winch is in a brake-free state; meanwhile, hydraulic oil enters a pilot oil port of the hydraulic reversing valve 11 to push the hydraulic reversing valve to reverse, so that an oil inlet and an oil outlet of the hydraulic motor 17 are communicated through the throttle valve 12, the winch is in a floating state and is out of the locking of the balance valve 15, and the throttle valve 12 can adjust the flow of the oil inlet and the oil outlet of the hydraulic motor 17, so that the winch speed is controlled; meanwhile, hydraulic oil enters a winch descending oil way through the one-way valve 10 to supplement oil for the descending oil way so as to prevent the load from dragging the winch to reverse too fast, and the winch descending oil way is sucked empty, so that the motor is damaged by suction empty.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (6)
1. The emergency lowering system of the marine hydraulic crane is characterized by comprising a manual pump and a hydraulic pump station, wherein an oil outlet of the manual pump is connected with an oil outlet of the hydraulic pump station in parallel, oil is supplied to a hydraulic system together, and hydraulic oil passes through a manual valve and then is supplied to a hydraulic executing element: the swinging device, the manned/cargo dual-purpose winch and the luffing cylinder supply oil to respectively drive the swinging of the suspension arm, the lifting of the steel wire rope and the luffing of the suspension arm; the oil outlet of the manual pump is provided with a first quick connector, the manned/cargo dual-purpose winch is provided with a second quick connector which is respectively connected with a hydraulic hose, and the manual pump supplies oil to the manned/cargo dual-purpose winch when the crane loses pressure;
the cargo winch comprises an electromagnetic valve, a balance valve, a brake and a hydraulic motor, wherein the electromagnetic valve is used for switching the cargo winch into a high-speed small-torque state so as to adapt to a cargo working mode, the balance valve is used for locking a load when the crane loses pressure, the brake controls the hydraulic winch to rotate, a shuttle valve II and a sequence valve are further arranged between the brake and an oil outlet of a manual pump and used for controlling the communication of a brake oil path, a hydraulic reversing valve is arranged between oil inlet and oil outlet of the hydraulic motor, and the hydraulic reversing valve is used for controlling the communication of the oil inlet and the oil outlet of the hydraulic motor.
2. The emergency lowering system of hydraulic crane for ship according to claim 1, wherein the first quick connector and the second quick connector are female connectors, and the two ends of the hydraulic hose are provided with male connectors matched with the first quick connector and the second quick connector.
3. The emergency lowering system of hydraulic crane for ship according to claim 1, wherein a throttle valve is provided between the oil inlet and the oil outlet of the hydraulic motor for controlling the speed of the winch.
4. The emergency lowering system for hydraulic crane for ship according to claim 1, wherein the winch is further provided with a balance valve for locking the winch.
5. The emergency lowering system of hydraulic crane for ship according to claim 1, wherein the lowering oil path of the winch is further provided with a check valve for supplementing oil to the lowering oil path.
6. The emergency lowering system of hydraulic crane for ship according to claim 1, wherein a shuttle valve I is arranged between the oil inlet and the oil outlet of the hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320957514.0U CN219860235U (en) | 2023-04-25 | 2023-04-25 | Emergency lowering system of marine hydraulic crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320957514.0U CN219860235U (en) | 2023-04-25 | 2023-04-25 | Emergency lowering system of marine hydraulic crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219860235U true CN219860235U (en) | 2023-10-20 |
Family
ID=88338545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320957514.0U Active CN219860235U (en) | 2023-04-25 | 2023-04-25 | Emergency lowering system of marine hydraulic crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219860235U (en) |
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2023
- 2023-04-25 CN CN202320957514.0U patent/CN219860235U/en active Active
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