CN114278630A - Hydraulic control system of swing mechanism of pile winding crane - Google Patents
Hydraulic control system of swing mechanism of pile winding crane Download PDFInfo
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- CN114278630A CN114278630A CN202111635121.XA CN202111635121A CN114278630A CN 114278630 A CN114278630 A CN 114278630A CN 202111635121 A CN202111635121 A CN 202111635121A CN 114278630 A CN114278630 A CN 114278630A
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Abstract
The invention discloses a hydraulic control system of a slewing mechanism of a pile crane, which comprises a quantitative motor S01, an electric proportional pressure reducing valve and a slewing multi-way valve H17/9, wherein the quantitative motor S01 is used for driving a slewing platform, the number of the quantitative motors S01 is six, the output ends of the slewing multi-way valve H17/9 are connected with three quantitative motors S01 through left-direction oil supply pipes, and the output ends of the slewing multi-way valve H17/9 are connected with the other three quantitative motors S01 through right-direction oil supply pipes; a balance valve S02 for balancing oil pressure is arranged between the left oil supply pipe and the right oil supply pipe; the quantitative motor S01 is provided with a quantitative motor braking mechanism; after the PLC automatic control system obtains the rotating speed of the slewing mechanism through the encoder, the rotating speed of the slewing mechanism is corrected through the electric proportional pressure reducing valve and the hydraulic proportional multi-way valve. A plurality of quantitative motors are adopted to drive the rotary platform to rotate left and right, and the conveying capacity of the hoisting mechanism is improved.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a hydraulic control system of a swing mechanism of a pile winding crane.
Background
At present, a pile-winding type rotary crane is usually installed on pile legs of various ocean platforms, and is widely applied due to the advantages of small occupied platform space, compact structure, large hoisting capacity, long hoisting radius and the like.
The pile-winding type rotary crane mainly comprises a base, a rotary platform, a hoisting mechanism and a hydraulic system, wherein the rotary platform is rotatably arranged on the base, and the hoisting mechanism is arranged on the rotary platform. The hydraulic system provides power and brake automation for the main hoisting winch, the auxiliary main hoisting winch, the amplitude-variable winch and the rotary platform, and the quality of the hydraulic system directly corresponds to the safety performance and the operation efficiency of the crane.
Two quantitative motors are usually designed on a rotary platform of an existing crane, one quantitative motor drives the rotary platform to rotate left, the other quantitative motor is used for driving the rotary platform to rotate right, and the lifting mechanism is difficult to convey heavy objects due to insufficient driving force of the quantitative motors.
Disclosure of Invention
The invention aims to provide a hydraulic control system of a swing mechanism of a pile winding crane, which adopts a plurality of quantitative motors to drive a swing platform to rotate left and right, and improves the conveying capacity of the lifting mechanism.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic control system of a swing mechanism of a winding pile crane comprises a quantitative motor S01, an electric proportional pressure reducing valve and a swing multi-way valve H17/9, wherein the quantitative motor S01 is used for driving a swing platform, and the number of the quantitative motors S01 is six;
the input end of the rotary multi-way valve H17/9 is connected with a main oil supply pipeline, the output end of the rotary multi-way valve H17/9 is connected with three quantitative motors S01 through a left oil supply pipe, and the output end of the rotary multi-way valve H17/9 is connected with the other three quantitative motors S01 through a right oil supply pipe;
the electric proportional pressure reducing valve controls the rotary multi-way valve H17/9 to supply oil to the left oil supply pipe or the right oil supply pipe through a shuttle valve H15/23 and a shuttle valve H15/24;
a balance valve S02 for balancing oil pressure is arranged between the left oil supply pipe and the right oil supply pipe;
the quantitative motor S01 is provided with a quantitative motor braking mechanism, the braking common oil way supplies oil to the quantitative motor braking mechanism, and the braking common oil way is provided with a speed regulating valve H22 and a hydraulic control reversing valve W04/6;
the hydraulic control system further comprises a PLC automatic control system, and after the PLC automatic control system obtains the rotating speed of the slewing mechanism through the encoder, the rotating speed of the slewing mechanism is corrected through the electric proportional pressure reducing valve and the hydraulic control proportional multi-way valve.
Furthermore, the hydraulic control system of the slewing mechanism of the pile crane further comprises an emergency stop system, wherein the emergency stop system is used for monitoring the proportional current output by the main motor and the PLC automatic control system to the electric proportional pressure reducing valve;
and when the emergency stopping system detects the abnormality, cutting off a signal of the PLC automatic control system to the electric proportional pressure reducing valve.
Furthermore, the hydraulic control system of the swing mechanism of the pile crane further comprises a cooling system and a hydraulic oil tank which are communicated, the main motor drives a main pump to suck and drain oil from the hydraulic oil tank, and the main pump supplies oil to the swing mechanism through a hydraulic control proportional multi-way valve;
the cooling system is used for cooling oil in the hydraulic oil tank.
Furthermore, the hydraulic control system of the swing mechanism of the winding pile crane further comprises an emergency pump set and a hydraulic control handle, wherein the hydraulic control handle controls the oil pressure proportional pressure of the emergency pump set introduced into the hydraulic control proportional multi-way valve.
Furthermore, a rotary multi-way valve is controlled between the hydraulic control handle and the electric proportional pressure reducing valve through a shuttle valve, and then the quantitative motor S01 is controlled.
Further, the hydraulic control system of the swing mechanism of the pile crane further comprises a safety protection system, the safety protection system is used for monitoring the proportional current output by the PLC automatic control system to the electric proportional pressure reducing valve, and when the safety protection system detects that the proportional current is overloaded or the rotating speed correction is abnormal, the signal of the PLC automatic control system to the electric proportional pressure reducing valve set is cut off.
Furthermore, the PLC automatic control system is connected with an electric control handle, and the electric control handle is used for controlling the output proportional voltage of the PLC automatic control system so as to control the electric proportional pressure reducing valve.
The embodiment of the invention has the beneficial effects that:
this around hydraulic control system of pile crane rotation mechanism has set up six quantitative motors, and the left turn of rotary platform and the right turn are through three quantitative motor drive respectively, have promoted rotary platform's loading capacity, and then improve the motion ability of lifting by crane the mechanism.
The hydraulic control system provided by the embodiment of the invention can realize automatic control of the swing mechanism through the PLC automatic control system, and can also be switched into a manual control mode of a hydraulic control handle, so that the safety of the hydraulic system is higher, and the reliability is better; and the slewing mechanism is controlled by an independent hydraulic system, so that the slewing mechanism has good independence and high reliability.
Drawings
FIG. 1 is a frame schematic of a hydraulic control system for a swing mechanism of a pipe hoist according to one embodiment of the present invention;
FIG. 2 is a system piping diagram of a hydraulic control system of one embodiment of the present invention;
FIG. 3 is a swing system piping diagram of the hydraulic control system of one embodiment of the present invention;
figure 4 is a drawing of the piping diagram of the system of figures 2 and 3 with reference numbers for the elements.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between the described features, whether they are sequential or not.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A hydraulic control system of a slewing mechanism of a pile winding crane according to an embodiment of the present invention will be described with reference to fig. 1 to 4.
A hydraulic control system of a swing mechanism of a pile crane comprises a quantitative motor S01, electric proportional pressure reducing valves (H18/11 and H18/12) and a swing multi-way valve H17/9, wherein the quantitative motor S01 is used for driving a swing platform, and the number of the quantitative motors S01 is six;
the input end of the rotary multi-way valve H17/9 is connected with a main oil supply pipeline, the output end of the rotary multi-way valve H17/9 is connected with three quantitative motors S01 through a left oil supply pipe, and the output end of the rotary multi-way valve H17/9 is connected with the other three quantitative motors S01 through a right oil supply pipe;
the electric proportional pressure reducing valves (H18/11 and H18/12) control the rotary multi-way valve H17/9 to supply oil to the left oil supply pipe or the right oil supply pipe through the shuttle valve H15/23 and the shuttle valve H15/24;
a balance valve S02 for balancing oil pressure is arranged between the left oil supply pipe and the right oil supply pipe;
the quantitative motor S01 is provided with a quantitative motor braking mechanism, the braking common oil way supplies oil to the quantitative motor braking mechanism, and the braking common oil way is provided with a speed regulating valve H22 and a hydraulic control reversing valve W04/6;
the hydraulic control system further comprises a PLC automatic control system, and after the PLC automatic control system obtains the rotating speed of the swing mechanism through an encoder, the rotating speed of the swing mechanism is corrected through an electric proportional pressure reducing valve (H18/11 and H18/12) and a hydraulic control proportional multi-way valve.
When the swing mechanism needs to be driven to rotate left or right, the PLC automatic control system is used for controlling the electric proportional pressure reducing valves (H18/11 and H18/12) to supply oil to the shuttle valves H10/26 or H10/27, further changing the valve position condition of the swing multi-way valve H17/9, and finally supplying oil through the left oil supply pipeline or the right oil supply pipeline, wherein when the left oil supply pipeline supplies oil, the left rotation of the fixed-displacement motor is indicated, and when the right oil supply pipeline supplies oil, the right rotation of the fixed-displacement motor is indicated. The hydraulic control reversing valve W04/6 is driven to be opened through the shuttle valve, oil is supplied to the quantitative motor braking mechanism through a braking common pipeline BC1, and the quantitative motor braking mechanism is started to leave the quantitative motor S01; in addition, the speed of the constant motor S01 can be changed by controlling the brake oil pressure with the speed control valve H22. When the metering motor drains oil, the speed of the draining oil is slowed down by the action of the balance valve S02, so that the buffer effect is generated on the slewing mechanism.
This around hydraulic control system of pile crane rotation mechanism has set up six quantitative motors, and the left turn of rotary platform and the right turn are through three quantitative motor drive respectively, have promoted rotary platform's loading capacity, and then improve the motion ability of lifting by crane the mechanism.
Further, the hydraulic control system of the slewing mechanism of the pile crane further comprises an emergency stop system, wherein the emergency stop system is used for monitoring the main motor and monitoring the proportional current output by the PLC automatic control system to the electric proportional pressure reducing valves (H18/11 and H18/12); and when the emergency stopping system detects the abnormality, cutting off signals of the PLC automatic control system to the electric proportional pressure reducing valves (H18/11 and H18/12).
The hydraulic control system of the swing mechanism of the pile winding crane further comprises an emergency pump set and a hydraulic control handle, wherein the hydraulic control handle controls the oil pressure proportional pressure of the emergency pump set introduced into the hydraulic control proportional multi-way valve. The hydraulic control system of the swing mechanism of the pile winding crane further comprises a safety protection system, the safety protection system is used for monitoring the proportional current output by the PLC automatic control system to the electric proportional pressure reducing valve, and when the safety protection system detects that the proportional current is overloaded or the rotating speed is corrected abnormally, a signal of the PLC automatic control system for supplying the electric proportional pressure reducing valve bank is cut off.
The PLC automatic control system monitors the liquid level, the temperature and the filter of the hydraulic oil tank. When the emergency stopping system and the safety protection system detect abnormity, signals of the power supply proportional pressure reducing valve set of the PLC automatic control system are cut off, and the hydraulic control proportional multi-way valve can be controlled by the hydraulic handle to control the swing mechanism. The rotary multi-way valve is controlled between the hydraulic control handle and the electric proportional pressure reducing valves (H18/11 and H18/12) through a shuttle valve, and then the quantitative motor S01 is controlled. The hydraulic control system provided by the embodiment of the invention can realize automatic control of the swing mechanism through the PLC automatic control system, and can also be switched into a manual control mode of a hydraulic control handle, so that the safety of the hydraulic system is higher, and the reliability is better; and the slewing mechanism is controlled by an independent hydraulic system, so that the slewing mechanism has good independence and high reliability.
Furthermore, the hydraulic control system of the swing mechanism of the pile crane further comprises a cooling system and a hydraulic oil tank which are communicated, the main motor drives a main pump to suck and drain oil from the hydraulic oil tank, and the main pump supplies oil to the swing mechanism through a hydraulic control proportional multi-way valve; the cooling system is used for cooling oil in the hydraulic oil tank.
The oil drainage of the main pump, the oil return of the multi-way valve, the oil drainage of the oil motor and the oil return of the control valve are all provided with heat, and the cooling system can cool hot oil of the hydraulic oil tank, so that the stability of long-term working of the hydraulic system is ensured.
Furthermore, the PLC automatic control system is connected with an electric control handle, and the electric control handle is used for controlling the output proportional voltage of the PLC automatic control system so as to control the electric proportional pressure reducing valve.
The embodiment of the invention also provides a hydraulic control method of the swing mechanism of the pile winding crane, which is based on the hydraulic system of the swing mechanism of the pile winding crane, and when the swing mechanism needs to be driven to rotate left or right:
the PLC automatic control system controls the electric proportional pressure reducing valves (H18/11 and H18/12) to supply oil to the shuttle valves H10/26 or H10/27, changes the valve position condition of the rotary multi-way valve H17/9 and supplies oil through a left oil supply pipeline or a right oil supply pipeline;
when the left oil supply pipeline supplies oil, the quantitative motor S01 turns left, and when the right oil supply pipeline supplies oil, the quantitative motor S01 turns right;
the hydraulic control reversing valve W04/6 is driven to be opened through the shuttle valve, oil is supplied to the quantitative motor braking mechanism through a braking common pipeline BC1, and the quantitative motor braking mechanism is started to leave the quantitative motor S01;
the speed of a quantitative motor S01 is changed by controlling the brake oil pressure through a speed regulating valve H22;
when the metering motor S01 drains, the speed of the drain is slowed down using the balancing valve S02.
Other configurations and operations of a hydraulic control system for a swing mechanism of a pipe hoist according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The hydraulic control system of the swing mechanism of the pile crane is characterized by comprising a quantitative motor S01, an electric proportional pressure reducing valve and a swing multi-way valve H17/9, wherein the quantitative motor S01 is used for driving a swing platform, and the number of the quantitative motors S01 is six;
the input end of the rotary multi-way valve H17/9 is connected with a main oil supply pipeline, the output end of the rotary multi-way valve H17/9 is connected with three quantitative motors S01 through a left oil supply pipe, and the output end of the rotary multi-way valve H17/9 is connected with the other three quantitative motors S01 through a right oil supply pipe;
the electric proportional pressure reducing valve controls the rotary multi-way valve H17/9 to supply oil to the left oil supply pipe or the right oil supply pipe through a shuttle valve H15/23 and a shuttle valve H15/24;
a balance valve S02 for balancing oil pressure is arranged between the left oil supply pipe and the right oil supply pipe;
the quantitative motor S01 is provided with a quantitative motor braking mechanism, the braking common oil way supplies oil to the quantitative motor braking mechanism, and the braking common oil way is provided with a speed regulating valve H22 and a hydraulic control reversing valve W04/6;
the hydraulic control system further comprises a PLC automatic control system, and after the PLC automatic control system obtains the rotating speed of the slewing mechanism through the encoder, the rotating speed of the slewing mechanism is corrected through the electric proportional pressure reducing valve and the hydraulic control proportional multi-way valve.
2. The hydraulic control system for a slewing mechanism of a pile crane according to claim 2, further comprising an emergency stop system for monitoring the main motor and monitoring the proportional current output by the PLC automatic control system to the electro-proportional pressure reducing valve;
and when the emergency stopping system detects the abnormality, cutting off a signal of the PLC automatic control system to the electric proportional pressure reducing valve.
3. The hydraulic control system of the slewing mechanism of the pile crane according to claim 2, further comprising a cooling system and a hydraulic oil tank which are communicated with each other, wherein the main motor drives a main pump to suck and drain oil from the hydraulic oil tank, and the main pump supplies oil to the slewing mechanism through a hydraulic control proportional multi-way valve;
the cooling system is used for cooling oil in the hydraulic oil tank.
4. The hydraulic control system of the slewing mechanism around the pile crane as claimed in claim 1, further comprising an emergency pump set and a hydraulic control handle, wherein the hydraulic control handle controls the oil pressure proportional pressure of the emergency pump set introduced into the hydraulic control proportional multi-way valve.
5. The hydraulic control system of the slewing mechanism of the pile crane according to claim 4, wherein the shuttle valve is arranged between the hydraulic control handle and the electro-proportional pressure reducing valve to control the slewing multi-way valve, and further control the constant-displacement motor S01.
6. The hydraulic control system of a slewing mechanism of a pile-winding crane according to claim 1, further comprising a safety protection system, wherein the safety protection system is used for monitoring the proportional current output by the PLC automatic control system to the electric proportional pressure reducing valve, and when the safety protection system detects that the proportional current is overloaded or the speed correction is abnormal, the signal from the PLC automatic control system to the electric proportional pressure reducing valve set is cut off.
7. The hydraulic control system of a slewing mechanism of a pile-winding crane according to claim 1, wherein the PLC automatic control system is connected with an electric control handle, and the electric control handle is used for controlling the output proportional voltage of the PLC automatic control system so as to control the electric proportional pressure reducing valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111635121.XA CN114278630A (en) | 2021-12-29 | 2021-12-29 | Hydraulic control system of swing mechanism of pile winding crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111635121.XA CN114278630A (en) | 2021-12-29 | 2021-12-29 | Hydraulic control system of swing mechanism of pile winding crane |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331705A (en) * | 1994-06-03 | 1995-12-19 | Shin Caterpillar Mitsubishi Ltd | Oil hydraulic circuit for turning of construction machine |
| JP2008213999A (en) * | 2007-03-02 | 2008-09-18 | Ihi Construction Machinery Ltd | Hydraulic circuit of moving crane |
| CN203189375U (en) * | 2013-04-03 | 2013-09-11 | 郑州宇通重工有限公司 | Four-motor rotary multistage speed regulating valve |
| CN207566748U (en) * | 2017-11-30 | 2018-07-03 | 中船华南船舶机械有限公司 | A kind of crane brake system |
| CN108423577A (en) * | 2017-11-30 | 2018-08-21 | 中船华南船舶机械有限公司 | A kind of crane autobalance and force balance system and method |
| CN207986531U (en) * | 2017-11-30 | 2018-10-19 | 中船华南船舶机械有限公司 | A kind of crane elimination accumulated error system |
-
2021
- 2021-12-29 CN CN202111635121.XA patent/CN114278630A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331705A (en) * | 1994-06-03 | 1995-12-19 | Shin Caterpillar Mitsubishi Ltd | Oil hydraulic circuit for turning of construction machine |
| JP2008213999A (en) * | 2007-03-02 | 2008-09-18 | Ihi Construction Machinery Ltd | Hydraulic circuit of moving crane |
| CN203189375U (en) * | 2013-04-03 | 2013-09-11 | 郑州宇通重工有限公司 | Four-motor rotary multistage speed regulating valve |
| CN207566748U (en) * | 2017-11-30 | 2018-07-03 | 中船华南船舶机械有限公司 | A kind of crane brake system |
| CN108423577A (en) * | 2017-11-30 | 2018-08-21 | 中船华南船舶机械有限公司 | A kind of crane autobalance and force balance system and method |
| CN207986531U (en) * | 2017-11-30 | 2018-10-19 | 中船华南船舶机械有限公司 | A kind of crane elimination accumulated error system |
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