CN112194025A - Hydraulic rotation limiting device of marine crane and using method thereof - Google Patents
Hydraulic rotation limiting device of marine crane and using method thereof Download PDFInfo
- Publication number
- CN112194025A CN112194025A CN202011247899.9A CN202011247899A CN112194025A CN 112194025 A CN112194025 A CN 112194025A CN 202011247899 A CN202011247899 A CN 202011247899A CN 112194025 A CN112194025 A CN 112194025A
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- crane
- valve
- limiting
- rotary
- baffle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/94—Safety gear for limiting slewing movements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic rotary limiting device of a marine crane and a use method thereof, relating to the technical field of crane limiting, comprising a crane rotary device for controlling the crane to rotate leftwards or rightwards, a rotary device supporting cylinder body positioned below the crane rotary device, and a crane multi-way valve comprising a plurality of left and right rotary pilot oil ways; the crane control valve is connected with the crane slewing device and is used for controlling the crane slewing device to rotate leftwards or rightwards; and the rotation limiting valve is fixed on the outer side of the crane rotation device, so that the rotation limiting valve synchronously rotates along with the crane rotation device, and comprises a left limiting valve and a right limiting valve. The rotating angle of the suspension arm of the marine crane can reach 360 degrees without using a slip ring with higher cost, and the working range of the crane is expanded.
Description
Technical Field
The invention relates to the technical field of crane limiting, in particular to a hydraulic rotation limiting device of a marine crane and a using method thereof.
Background
At present, the hydraulic rotary crane for the ship has two rotation angles during working: the first is that the rotation angle is less than 360 degrees (limited rotation) to limit the rotation angle of the crane, prevent the damage of cables or hydraulic hoses and the like, and achieve the purpose of safe operation of the crane. The limitation of the angle is realized by arranging a rotation limit. The second type is full rotation, the rotation angle is more than or equal to 360 degrees (infinite rotation), the angle has no limiting device, arbitrary rotation can be realized, and the rotation is realized through an electric slip ring or a hydraulic slip ring arranged at the rotation center. For some marine cranes which are not frequently used, have large working radius and require working angles of 360 degrees to realize dead-angle-free operation, the installation of an electric slip ring or a hydraulic slip ring alone undoubtedly increases a lot of manufacturing, using and maintaining costs.
Disclosure of Invention
The invention mainly aims to provide a hydraulic rotation limiting device of a marine crane and a using method thereof, which can realize that the rotation angle is equal to 360 degrees without using a sliding ring, realize operation without dead angles and further reduce the manufacturing, using and maintaining costs of the rotation limiting device.
The purpose of the invention can be achieved by adopting the following technical scheme:
the hydraulic rotation limiting device for the marine crane comprises a crane rotating device for controlling the crane to rotate leftwards or rightwards, a rotating device supporting cylinder body positioned below the crane rotating device, and a hydraulic rotation limiting device for the marine crane and a using method thereof
The crane multi-way valve comprises a plurality of left and right rotary pilot oil ways;
the crane control valve is connected with the crane slewing device and used for controlling the crane slewing device to rotate leftwards or rightwards;
the rotary limiting valve is fixed on the outer side of the crane rotating device and enables the rotary limiting valve to synchronously rotate along with the crane rotating device, the rotary limiting valve comprises a left limiting valve and a right limiting valve, the left limiting valve is connected with a left rotary pilot oil path of the crane rotating device, and the right limiting valve is connected with a right rotary pilot oil path of the crane rotating device;
the delay reversing valve is respectively connected with the crane operating valve, the left limiting valve and the right limiting valve through hydraulic pipelines, and is arranged between the rotary limiting valve and a left rotary pilot oil path and a right rotary pilot oil path of the crane multi-way valve;
the left limit valve baffle and the right limit valve baffle are fixed on the outer side of the rotary device supporting barrel, and the left limit valve baffle and the right limit valve baffle are distributed in a vertically staggered mode.
Preferably, a first fixing plate is connected between the left limit valve baffle and the rotary device supporting cylinder, and the first fixing plate is used for prolonging the position of the left limit valve baffle so as to be matched with the left limit valve for use.
Preferably, a second fixing plate is connected between the right limit valve baffle and the rotary device supporting cylinder, and the second fixing plate is used for prolonging the position of the right limit valve baffle so as to be matched with the right limit valve for use.
Preferably, both ends of the left limit valve baffle and the right limit valve baffle are bent downwards.
Preferably, the bottom ends of the left limit valve and the right limit valve are provided with rollers.
Preferably, a left limit valve mounting plate is connected between the left limit valve and the crane rotating device.
Preferably, a right limit valve mounting plate is connected between the right limit valve and the crane rotating device.
Preferably, the left limit valve and the right limit valve are distributed in a vertically staggered mode.
A use method of a hydraulic rotation limiting device of a marine crane comprises the following steps,
step A, the crane turns left to enter a 'dead zone', and the crane is controlled to rotate rightwards, so that the crane is separated from the 'dead zone' rightwards;
and B, the crane turns right to enter a dead zone, and the crane is controlled to rotate left, so that the crane is separated from the dead zone to the left.
Preferably, the specific steps of step A comprise the following steps
a1. In the left rotation process of the crane, when the crane rotates to 0 degree (360 degrees), the left limiting valve touches the left limiting valve baffle, the right limiting valve touches the right limiting valve baffle at the moment, and the crane enters a 'dead zone';
a2. in the left rotation process of the crane, under the pressure action of a left control oil path communicated to the valve core in the time delay reversing valve, the valve core of the time delay reversing valve is in the left position, a left rotation pilot oil path of the crane multi-way valve is connected, and a right rotation pilot oil path is disconnected;
a3. the crane is controlled to rotate rightwards by the crane control valve, so that the crane is separated from a dead zone rightwards, and the crane works normally.
Preferably, the specific steps of step B include the following steps
b1. In the process of right rotation of the crane, when the crane rotates to 360 degrees (0 degree), the right limiting valve touches the right limiting valve baffle, at the moment, the left limiting valve also touches the left limiting valve baffle, and the crane enters a 'dead zone';
b2. in the process of right rotation of the crane, under the pressure action of a right control oil way communicated to the valve core in the time delay reversing valve, the valve core of the time delay reversing valve is in the right position, a right rotation pilot oil way of the crane multi-way valve is communicated, and a left rotation pilot oil way is disconnected;
b3. the crane is controlled to rotate leftwards by the crane control valve, so that the crane is separated from a dead zone leftwards to work normally.
The invention has the beneficial technical effects that:
1. the rotating angle of the suspension arm of the marine crane can reach 360 degrees without using a slip ring with higher cost, and the working range of the crane is expanded.
2. The structure of the rotary part of the crane is simplified, the manufacturing, using and maintaining cost is reduced, and the crane is convenient to assemble and use.
3. The opening time of the valve core of the time-delay reversing valve can be adjusted by replacing a damping screw in the valve body, so that the reversing angle can be conveniently and accurately controlled.
Drawings
FIG. 1 is a hydraulic schematic of a multi-way valve and a rotary limit valve and a delay limit valve according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a rotation limiting device according to an embodiment of the present invention;
fig. 3 is a schematic view of a travel path of a rotary limit valve according to an embodiment of the present invention.
In the figure: 1-crane multi-way valve, 2-rotary limiting valve, 201-left limiting valve, 202-right limiting valve, 3-time delay reversing valve, 4-left limiting valve mounting plate, 5-right limiting valve mounting plate, 6-left limiting valve baffle, 7-right limiting valve baffle, 8-crane rotary device, 9-crane operating valve, 10-first fixing plate, 11-second fixing plate and 12-rotary device supporting barrel.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1 to 3, the hydraulic slewing stop device for a marine crane and the use method thereof provided by the embodiment of the invention include a crane slewing device 8 for controlling the crane to rotate left or right, a slewing device support cylinder 12 located below the crane slewing device 8, and the crane slewing device 8 can rotate left or right under the driving of a motor, and further include
The crane multi-way valve 1 comprises a plurality of left and right rotary pilot oil ways as shown in figure 1;
the crane control valve 9 is connected with the crane slewing device 8 and is used for controlling the crane slewing device 8 to rotate leftwards or rightwards;
the rotary limiting valve 2 is fixed on the outer side of the crane rotating device 8, so that the rotary limiting valve 2 synchronously rotates along with the crane rotating device 8, the rotary limiting valve 2 comprises a left limiting valve 201 and a right limiting valve 202, the left limiting valve 201 is connected with a left rotary pilot oil path of the crane rotating device 8, and the right limiting valve 202 is connected with a right rotary pilot oil path of the crane rotating device 8;
the delay reversing valve 3 is respectively connected with the crane operating valve 9, the left limiting valve 201 and the right limiting valve 202 through hydraulic pipelines, and the delay reversing valve 3 is arranged between the rotary limiting valve 2 and the left and right rotary pilot oil paths of the crane multi-way valve 1;
the left limit valve baffle 6 and the right limit valve baffle 7 are both fixed on the outer side of the rotary device supporting barrel 12, the left limit valve baffle 6 and the right limit valve baffle 7 are both in a fixed state, and the left limit valve baffle 6 and the right limit valve baffle 7 are distributed in a vertically staggered manner so as to prevent the left limit valve 201 from colliding with the right limit valve baffle 7 and the right limit valve 202 from colliding with the left limit valve baffle 6.
In the present embodiment, as shown in fig. 2, a first fixing plate 10 is connected between the left limit valve baffle 6 and the rotating device supporting cylinder 12, and the first fixing plate 10 is used for extending the position of the left limit valve baffle 6 to match the position of the left limit valve 201 for use.
In the present embodiment, as shown in fig. 2, a second fixing plate 11 is connected between the right limit valve baffle 7 and the rotating device supporting cylinder 12, and the second fixing plate 11 is used to extend the position of the right limit valve baffle 7 to match the position of the right limit valve 202.
In this embodiment, as shown in fig. 2 and fig. 3, both ends of the left limit valve baffle 6 and the right limit valve baffle 7 are bent downward, that is, the middle of the left limit valve baffle 6 and the right limit valve baffle 7 is convex, and the bottom ends of the left limit valve 201 and the right limit valve 202 are both provided with rollers, so that the left limit valve baffle 6 and the right limit valve baffle 7 are used conveniently.
In the present embodiment, as shown in fig. 2, a left limit valve mounting plate 4 is connected between the left limit valve 201 and the crane turning device 8, and a right limit valve mounting plate 5 is connected between the right limit valve 202 and the crane turning device 8, in order to fix the positions of the left limit valve 201 and the right limit valve 202, respectively.
In the present embodiment, as shown in fig. 2, the left limit valves 201 and the right limit valves 202 are distributed up and down in a staggered manner in order to adapt to the positions of the left limit valve flap 6 and the right limit valve flap 7.
In the embodiment, in the process of operating the crane to rotate, the rotation limiting valve 2 rotates along with the crane rotating device 8, when the rotation limiting valve contacts with the corresponding baffle, the limiting valve roller presses the corresponding baffle, the limiting valve is reversed, and after the unloading oil way is communicated, the crane rotating device stops.
In this embodiment, when the crane rotates to 0 degree (360 degrees) during the left rotation, the left limit valve 201 touches the left limit valve baffle 6, and the right limit valve 202 also touches the right limit valve baffle 7, the crane enters a "dead zone", during the left rotation of the crane, due to the pressure effect of the left control oil (the left control oil path leading to the valve core inside the delay change-over valve 3), the valve core of the delay change-over valve 3 is in the left position, the left rotation pilot oil path (the left limit oil path-the LSa oil path in fig. 1) of the crane multi-way valve 1 is connected, the right rotation pilot oil path (the right limit oil path-the LSb oil path in fig. 1) is disconnected, and at this time, the crane is controlled to rotate to the right by the crane control valve 9, (although the valve core of the right limit valve 202 is in the open state under the action of the roller at this time, the right rotation pilot oil path is closed by, the right limit oil circuit still has pressure, and the time-delay reversing valve 3 is used for enabling the crane to firstly leave the dead zone and then open the control oil circuit rotating rightwards) so as to enable the crane to leave the dead zone rightwards and enable the crane to normally work.
On the contrary, when the crane rotates rightwards, the valve core of the delay reversing valve 3 is switched to the right position to work, and can be separated from the 'dead zone' leftwards to enable the crane to work normally.
A use method of a hydraulic rotation limiting device of a marine crane comprises the following steps,
step A, the crane turns left to enter a 'dead zone', and the crane is controlled to rotate rightwards, so that the crane is separated from the 'dead zone' rightwards;
and B, the crane turns right to enter a dead zone, and the crane is controlled to rotate left, so that the crane is separated from the dead zone to the left.
In this embodiment, the specific steps of step a include the following
a1. In the left rotation process of the crane, when the crane rotates to 0 degree (360 degrees), the left limit valve 201 touches the left limit valve baffle 6, at the moment, the right limit valve 202 also touches the right limit valve baffle 7, and the crane enters a 'dead zone';
a2. in the left rotation process of the crane, under the pressure action of a left control oil path communicated to the valve core in the time delay reversing valve 3, the valve core of the time delay reversing valve 3 is in the left position, a left rotation pilot oil path of the crane multi-way valve 1 is connected, and a right rotation pilot oil path is disconnected;
a3. the crane is controlled to rotate rightwards through the crane operating valve 9, so that the crane is separated from a dead zone rightwards, and the crane works normally.
In this embodiment, the specific steps of step B include the following steps
b1. In the process of right rotation of the crane, when the crane rotates to 360 degrees (0 degree), the right limit valve 202 touches the right limit valve baffle 7, at the moment, the left limit valve 201 also touches the left limit valve baffle 6, and the crane enters a 'dead zone';
b2. in the process of right rotation of the crane, under the pressure action of a right control oil way communicated to a valve core in the time-delay reversing valve 3, the valve core of the time-delay reversing valve 3 is at the right position, a right rotation pilot oil way of the crane multi-way valve 1 is communicated, and a left rotation pilot oil way is disconnected;
b3. the crane is controlled to rotate leftwards by the crane control valve 9, so that the crane is separated from a dead zone leftwards to work normally.
In conclusion, in the embodiment, the rotation angle of the suspension arm of the marine crane can reach 360 degrees without using a slip ring with higher cost, and the working range of the crane is expanded. The structure of the rotary part of the crane is simplified, the manufacturing, using and maintaining cost is reduced, and the crane is convenient to assemble and use. The opening time of the valve core of the time-delay reversing valve can be adjusted by replacing a damping screw in the valve body, so that the reversing angle can be conveniently and accurately controlled.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (10)
1. The utility model provides a marine crane hydraulic pressure gyration stop device, is including being used for controlling hoist slewing device (8) that the hoist revolves left or right and slewer that is located crane slewing device (8) below supports barrel (12), its characterized in that: also comprises
The crane multi-way valve (1) comprises a plurality of left and right rotary pilot oil ways;
the crane operating valve (9) is connected with the crane slewing device (8) and is used for operating the crane slewing device (8) to rotate leftwards or rightwards;
the rotary limiting valve (2) is fixed on the outer side of the crane rotating device (8) and enables the rotary limiting valve (2) to synchronously rotate along with the crane rotating device (8), the rotary limiting valve (2) comprises a left limiting valve (201) and a right limiting valve (202), the left limiting valve (201) is connected with a left rotary pilot oil path of the crane rotating device (8), and the right limiting valve (202) is connected with a right rotary pilot oil path of the crane rotating device (8);
the delay reversing valve (3) is respectively connected with the crane operating valve (9), the left limiting valve (201) and the right limiting valve (202) through hydraulic pipelines, and the delay reversing valve (3) is arranged between the rotary limiting valve (2) and left and right rotary pilot oil paths of the crane multi-way valve (1);
the left limit valve baffle (6) and the right limit valve baffle (7) are fixed on the outer side of the rotary device supporting barrel body (12), and the left limit valve baffle (6) and the right limit valve baffle (7) are distributed in a vertically staggered mode.
2. The marine crane hydraulic rotary limiting device of claim 1, wherein: the left limit valve baffle (6) and the slewing device support cylinder (12) are connected with a first fixing plate (10) therebetween, and the first fixing plate (10) is used for prolonging the position of the left limit valve baffle (6) so as to be matched with the left limit valve (201) for use.
3. The marine crane hydraulic rotary limiting device of claim 1, wherein: the rotary device is characterized in that a second fixing plate (11) is connected between the right limit valve baffle (7) and the rotary device supporting cylinder body (12), and the second fixing plate (11) is used for prolonging the position of the right limit valve baffle (7) so as to be matched with the right limit valve (202) for use.
4. The marine crane hydraulic rotary limiting device of claim 1, wherein: and two ends of the left limit valve baffle (6) and the right limit valve baffle (7) are both bent downwards.
5. The marine crane hydraulic rotary limiting device as claimed in claim 4, wherein: the bottom ends of the left limiting valve (201) and the right limiting valve (202) are provided with rollers.
6. The marine crane hydraulic rotary limiting device of claim 1, wherein: and a left limit valve mounting plate (4) is connected between the left limit valve (201) and the crane rotating device (8).
7. The marine crane hydraulic rotary limiting device of claim 1, wherein: a right limit valve mounting plate (5) is connected between the right limit valve (202) and the crane rotating device (8), and the left limit valve (201) and the right limit valve (202) are distributed in a vertically staggered mode.
8. The use method of the marine crane hydraulic rotation limiting device according to claims 1-7 is characterized in that: comprises the following steps of,
step A, the crane turns left to enter a 'dead zone', and the crane is controlled to rotate rightwards, so that the crane is separated from the 'dead zone' rightwards;
and B, the crane turns right to enter a dead zone, and the crane is controlled to rotate left, so that the crane is separated from the dead zone to the left.
9. The use method of the marine crane hydraulic rotation limiting device according to claim 8, characterized in that: the specific steps of the step A comprise the following steps
a1. In the left rotation process of the crane, when the crane rotates to 0 degree (360 degrees), the left limiting valve (201) touches the left limiting valve baffle (6), the right limiting valve (202) touches the right limiting valve baffle (7), and the crane enters a 'dead zone';
a2. in the left rotation process of the crane, under the pressure action of a left control oil way communicated to a valve core in the time-delay reversing valve (3), the valve core of the time-delay reversing valve (3) is in the left position, a left rotation pilot oil way of the crane multi-way valve (1) is communicated, and a right rotation pilot oil way is disconnected;
a3. the crane is controlled to rotate rightwards through the crane operating valve (9), so that the crane is separated from a dead zone rightwards, and the crane works normally.
10. The use method of the marine crane hydraulic rotation limiting device according to claim 8, characterized in that: the specific steps of the step B comprise the following steps
b1. In the process that the crane rotates to 360 degrees (0 degree) in the right rotation process, the right limiting valve (202) touches the right limiting valve baffle (7), the left limiting valve (201) touches the left limiting valve baffle (6), and the crane enters a 'dead zone';
b2. in the process of right rotation of the crane, under the pressure action of a right control oil way communicated to a valve core in the time-delay reversing valve (3), the valve core of the time-delay reversing valve (3) is at the right position, a right rotation pilot oil way of the crane multi-way valve (1) is communicated, and a left rotation pilot oil way is disconnected;
b3. the crane is controlled to rotate leftwards by the crane control valve (9), so that the crane is separated from a dead zone leftwards and works normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247899.9A CN112194025A (en) | 2020-11-10 | 2020-11-10 | Hydraulic rotation limiting device of marine crane and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247899.9A CN112194025A (en) | 2020-11-10 | 2020-11-10 | Hydraulic rotation limiting device of marine crane and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112194025A true CN112194025A (en) | 2021-01-08 |
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ID=74033886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011247899.9A Pending CN112194025A (en) | 2020-11-10 | 2020-11-10 | Hydraulic rotation limiting device of marine crane and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112194025A (en) |
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2020
- 2020-11-10 CN CN202011247899.9A patent/CN112194025A/en active Pending
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