CN115490163A - Tower crane jacking system and emergency processing control method thereof - Google Patents
Tower crane jacking system and emergency processing control method thereof Download PDFInfo
- Publication number
- CN115490163A CN115490163A CN202211135743.0A CN202211135743A CN115490163A CN 115490163 A CN115490163 A CN 115490163A CN 202211135743 A CN202211135743 A CN 202211135743A CN 115490163 A CN115490163 A CN 115490163A
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- Prior art keywords
- jacking
- oil
- tower crane
- directional valve
- hydraulic pump
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000003672 processing method Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 32
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
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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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention relates to a tower crane jacking system and an emergency treatment control method thereof, wherein the tower crane jacking system comprises an oil absorption filter, a liquid level liquid thermometer, a motor, a hydraulic pump, an electromagnetic directional valve, a pressure gauge, a manual directional valve, an integrated valve group, a quick connector, a high-pressure hose, a jacking oil cylinder, an emergency device and an electric control system, wherein the motor is connected with the hydraulic pump, the hydraulic pump is connected with the electromagnetic directional valve through an oil pipe, the electromagnetic directional valve is connected with the electric control system, an oil circuit of the electromagnetic directional valve is connected to the integrated valve group and the oil tank, the integrated valve group is connected with the quick connector, the high-pressure hose and the jacking oil cylinder are connected through the quick connector, and the emergency device is arranged beside the hydraulic pump. The beneficial effects of the invention are: this hydraulic jacking system has increased one set of emergency device on current basis, and when main jacking system components and parts became invalid, this set of hydraulic jacking system has an emergency device, can directly start emergency device, continues work, improves work efficiency, reduces various risks.
Description
Technical Field
The invention relates to a tower crane jacking system and an emergency processing control method thereof, and belongs to the technical field of tower cranes.
Background
The existing hydraulic jacking system of the conventional machine type tower crane is only provided with one set of hydraulic jacking system, namely a power element, a control element and an execution element. But none monitor the control and emergency jacking. And the jacking process is judged manually, so that the risk coefficient of jacking is increased, and the jacking efficiency is influenced. When the jacking power element or the control element fails, the tower crane cannot perform cylinder extending jacking or cylinder retracting descending operation. At the moment, emergency treatment needs to be carried out on the construction site, a set of power unit capable of being used for emergency descending is adjusted, and the tower crane is subjected to emergency descending so as to be in a safe state. The emergency operation has high requirements on professional skills and corresponding experiences of personnel, has high working strength and is easy to cause safety accidents.
A hydraulic jacking system in the existing tower crane industry generally has no monitoring control and emergency jacking device. Therefore, several technical disadvantages arise: whether the jacking system normally operates or not needs manual detection, so that safety risks are increased, and jacking efficiency is influenced; when the jacking system became invalid, one set of emergent jacking unit of urgent call needed, carried out the emergency and fallen the tower, at the in-process of calling emergent unit, can increase uncontrollable risk, increase operation workman's intensity of labour and professional plain ability increase the danger coefficient of jacking.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a tower crane jacking system and an emergency treatment control method thereof.
The invention is realized by the following technical scheme: a tower machine jacking system which characterized in that: including oil absorption filter, liquid level liquid thermometer, motor, hydraulic pump, magenetic exchange valve, manometer, hand-operated direction valve, integrated valves, quick connector, high-pressure hose, jacking cylinder, emergency device and electrical system, the motor link to each other with the hydraulic pump, the hydraulic pump passes through oil pipe and links to each other with the magenetic exchange valve, the magenetic exchange valve links to each other with electrical system, the oil circuit of magenetic exchange valve connects to integrated valves and oil tank, quick connector is connected to integrated valves, connects high-pressure hose and jacking cylinder through quick connector, emergency device sets up by the hydraulic pump.
And the jacking oil cylinder is provided with a speed sensor and a displacement sensor for detecting the position of a piston rod of the jacking oil cylinder and the movement speed of the piston, and the speed sensor and the displacement sensor are connected with an electric control system.
And the quick connector is provided with a signal transmitter for detecting whether the connector is in good contact, and the signal transmitter is connected with an electric control system.
The electric control system comprises a controller, a signal amplifier connected with the controller, an electromagnetic valve connected with the signal amplifier, a signal emitter and an alarm device.
The emergency device is arranged in the jacking mechanism pump station, the reversing valve of the emergency device is arranged beside the pump station operating handle, the jacking work during the control of the emergency work is realized by operating the reversing valve of the emergency device, and two interfaces are additionally arranged at the oil outlet of the pump station and used for connecting the hose of the emergency device.
An emergency processing method of a tower crane jacking system is characterized in that: the method comprises the following steps:
when the tower crane starts to jack, a tower crane jacking system is started, a motor runs, a hydraulic pump discharges flow, at the moment, the right position of an electromagnetic directional valve is communicated, oil normally flows to the left position of a manual directional valve in an integrated valve group and enters a rodless cavity of an oil cylinder, a pressure sensor, a speed sensor and a displacement sensor which are arranged in the oil cylinder transmit signals, the signals are collected by a controller and fed back to an electric control system for logic judgment, the electric control system transmits data to a cab, if the condition feedback data and a fluctuation value exceed a rated condition set value of the hydraulic system, the controller sends out a signal, the electric control system controls the left position of the electromagnetic directional valve to be communicated, at the moment, the output flow of the hydraulic pump is directly unloaded to an oil return tank, an alarm is sounded, and jacking work is stably stopped;
when an alarm sounds, an operator pulls out the quick connector, oil leakage can not be caused due to the use of the quick connector, the quick connector of the emergency device is connected into the quick connector of the hydraulic jacking system, after the quick connector is connected, the connector is confirmed to be in good contact with the signal transmitter to transmit a signal, the controller receives the signal and releases the alarm, the electric control system controls the right position of the electromagnetic reversing valve to be connected, the operator adjusts the reversing valve in the emergency device according to the jacking working requirement, and the jacking mechanism continues to perform pressure maintaining stable work or slow jacking work.
The output flow of the hydraulic pump is directly unloaded to the oil return tank, and an alarm is sounded at the same time.
The beneficial effects of the invention are: the hydraulic jacking system is additionally provided with a set of emergency jacking unit on the existing basis, when components of the main jacking system fail, such as a main motor fails, an electric control pump fails, a main valve fails and the like, the hydraulic jacking system is provided with the emergency jacking unit, the emergency jacking unit can be directly started to continue to work, the working efficiency is improved, and various risks are reduced.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a hydraulic schematic of the present invention;
fig. 2 is a flow chart of the method of the present invention.
In the figure: 1. an oil absorption filter; 2. a liquid level liquid thermometer; 3. an electric motor; 4. a hydraulic pump; 5. an electromagnetic directional valve; 6. a pressure gauge; 7. a manual directional control valve; 8. an integrated valve bank; 9. a quick connector; 10. a high-pressure hose; 11. a jacking oil cylinder; 12. an emergency device; 13. an electronic control system.
Detailed Description
A tower machine jacking system as shown in fig. 1 and fig. 2, its characterized in that: including oil absorption filter 1, liquid level liquid thermometer 2, motor 3, hydraulic pump 4, electromagnetic directional valve 5, manometer 6, manual directional valve 7, integrated valves 8, quick connector 9, high-pressure hose 10, jacking cylinder 11, emergency device 12 and electrical system 13, motor 3 link to each other with hydraulic pump 4, hydraulic pump 4 passes through oil pipe and links to each other with electromagnetic directional valve 5, electromagnetic directional valve 5 links to each other with electrical system 13, electromagnetic directional valve 5's oil circuit connects to integrated valves 8 and oil tank, integrated valves 8 connects quick connector 9, connects high-pressure hose 10 and jacking cylinder 11 through quick connector 9, emergency device 12 sets up by hydraulic pump 4.
And a speed sensor and a displacement sensor are arranged at the position of the jacking oil cylinder 11 and used for detecting the position of a piston rod of the jacking oil cylinder 11 and the movement speed of the piston, and the speed sensor and the displacement sensor are connected with an electric control system 13.
And a signal transmitter is arranged at the quick-connect connector 9 and used for detecting whether the connector is in good contact or not, and the signal transmitter is connected with an electric control system 13.
The electric control system 13 comprises a controller, a signal amplifier connected to the controller, an electromagnetic valve connected to the signal amplifier, a signal emitter and an alarm device.
The emergency device 12 is arranged inside a pump station of the jacking mechanism, a reversing valve of the emergency device 12 is arranged beside an operating handle of the pump station, the control of the jacking work during the emergency work is realized by operating the reversing valve of the emergency device 12, and two interfaces are additionally arranged at an oil outlet of the pump station and used for connecting hoses of the emergency device 12.
An emergency processing method of a tower crane jacking system is characterized in that: the method comprises the following steps:
when the tower crane starts to jack, a tower crane jacking system is started, a motor 3 runs, a hydraulic pump 4 discharges flow, at the moment, the right position of an electromagnetic directional valve 5 is communicated, oil normally flows to the left position of a manual directional valve 7 in an integrated valve group 8 and enters a rodless cavity of an oil cylinder, a pressure sensor, a speed sensor and a displacement sensor which are arranged in the oil cylinder transmit signals, the signals are collected by a controller and fed back to an electric control system 13 for logic judgment, the electric control system 13 transmits data to a cab, if the condition feedback data and a fluctuation value exceed a rated condition set value of the hydraulic system, the controller sends out signals, the electric control system 13 controls the left position of the electromagnetic directional valve 5 to be communicated, at the moment, the hydraulic pump output flow is directly unloaded to an oil tank, an alarm is sounded, and jacking work is stably stopped;
when an alarm sounds, an operator pulls out the quick connector 9, oil leakage cannot be caused due to the use of the quick connector 9, the quick connector of the emergency device 12 is connected to the quick connector 9 of the hydraulic jacking system, after the quick connector is connected, the connector is confirmed to be in good contact with the signal transmitter to transmit signals, the controller receives the signals and releases the alarm, the electric control system 13 controls the right switch-on of the electromagnetic reversing valve 5, the operator adjusts the reversing valve in the emergency device 12 according to the jacking working requirement, and the jacking mechanism continues to perform pressure maintaining stable work or slow jacking work.
The output flow of the hydraulic pump is directly unloaded to the oil return tank, and an alarm is sounded at the same time.
The hydraulic jacking system of the tower crane with the emergency device is adopted, so that the problem that jacking work cannot be carried out when a certain element fails is avoided.
And a quick plug connector for connecting the emergency jacking unit is additionally arranged between the main valve and the balance valve.
And judging whether the jacking mechanism fails or not by detecting the pressure of the system and the movable displacement and speed of the piston of the oil cylinder, and giving an alarm.
The operator can monitor the displacement and speed of the plug rod of the jacking oil cylinder, namely the jacking height, the jacking working speed and the system pressure. When the displacement, the speed and the pressure fluctuation exceed the error range, the electric control system judges that the hydraulic circuit fails. And the signal processor of the electric control system controls the electromagnetic directional valve in the main oil way to change direction and sends out an alarm signal. The outlet of the pump directly unloads the hydraulic oil to return to the oil tank. And (4) connecting the emergency device into the jacking system, and releasing the electric control alarm. Jacking work is continued, and the probability of uncontrollable accidents is reduced.
Claims (7)
1. A tower machine jacking system which characterized in that: including oil absorption filter (1), liquid level liquid thermometer (2), motor (3), hydraulic pump (4), electromagnetic directional valve (5), manometer (6), manual directional valve (7), integrated valves (8), quick connector (9), high pressure hose (10), jacking cylinder (11), emergency device (12) and electrical system (13), motor (3) link to each other with hydraulic pump (4), hydraulic pump (4) link to each other with electromagnetic directional valve (5) through oil pipe, electromagnetic directional valve (5) link to each other with electrical system (13), the oil circuit of electromagnetic directional valve (5) connects to integrated valves (8) and oil tank, integrated valves (8) are connected quick connector (9), connect high pressure hose (10) and jacking cylinder (11) through quick connector (9), emergency device (12) set up by hydraulic pump (4).
2. The tower crane jacking system according to claim 1, characterized in that: and a speed sensor and a displacement sensor are arranged at the position of the jacking oil cylinder (11) and used for detecting the position of a piston rod of the jacking oil cylinder (11) and the movement speed of the piston, and the speed sensor and the displacement sensor are connected with an electric control system (13).
3. The tower crane jacking system according to claim 1, characterized in that: and a signal emitter is arranged at the quick-connection connector (9) and used for detecting whether the connector is in good contact or not, and the signal emitter is connected with an electric control system (13).
4. The tower crane jacking system according to claim 1, characterized in that: the electronic control system (13) comprises a controller, a signal amplifier connected to the controller, an electromagnetic valve connected to the signal amplifier, a signal emitter and an alarm device.
5. The tower crane jacking system according to claim 1, characterized in that: the emergency device (12) is arranged inside a pump station of the jacking mechanism, a reversing valve of the emergency device (12) is arranged beside an operating handle of the pump station, the control of the jacking work during the emergency work is realized by operating the reversing valve of the emergency device (12), and two interfaces are additionally arranged at an oil outlet of the pump station and used for connecting hoses of the emergency device (12).
6. An emergency processing method of a tower crane jacking system is characterized in that: the method comprises the following steps:
when a tower crane starts to jack, a tower crane jacking system is started, a motor (3) runs, a hydraulic pump (4) discharges flow, at the moment, the right position of an electromagnetic directional valve (5) is communicated, oil normally flows to the left position of a manual directional valve (7) in an integrated valve group (8) and enters a rodless cavity of an oil cylinder, a pressure sensor, a speed sensor and a displacement sensor which are arranged in the oil cylinder transmit signals, the signals are collected by a controller and fed back to an electric control system (13) for logic judgment, the electric control system (13) transmits data to a cab, if the condition feedback data and a fluctuation value exceed a rated condition set value of the hydraulic system, the controller sends signals, the electric control system (13) controls the left position of the electromagnetic directional valve (5) to be communicated, at the moment, the flow of the hydraulic pump is directly unloaded to an oil return tank, an alarm is sounded, and the jacking work is stably stopped;
when an alarm sounds, an operator pulls out the quick connector (9), oil leakage cannot be caused due to the use of the quick connector (9), the quick connector of the emergency device (12) is connected to the quick connector (9) of the hydraulic jacking system, the connector is confirmed to be in good contact with the signal transmitter to transmit a signal after the connector is connected, the controller receives the signal and releases the alarm, the electric control system (13) controls the right switch-on of the electromagnetic reversing valve (5), the operator adjusts the reversing valve in the emergency device (12) according to the jacking working requirement, and the jacking mechanism continues to perform pressure maintaining stable work or slow jacking work.
7. The emergency treatment method of the tower crane jacking system according to claim 1, characterized in that: the output flow of the hydraulic pump is directly unloaded to the oil return tank, and an alarm is sounded at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135743.0A CN115490163A (en) | 2022-09-19 | 2022-09-19 | Tower crane jacking system and emergency processing control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135743.0A CN115490163A (en) | 2022-09-19 | 2022-09-19 | Tower crane jacking system and emergency processing control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115490163A true CN115490163A (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211135743.0A Pending CN115490163A (en) | 2022-09-19 | 2022-09-19 | Tower crane jacking system and emergency processing control method thereof |
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| CN (1) | CN115490163A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT296027B (en) * | 1968-08-17 | 1972-01-25 | Herion Werke K G | Safety control, especially for crank and eccentric press drives |
| CN101498324A (en) * | 2009-03-02 | 2009-08-05 | 北京联合大学 | Hydraulic pressure booster for ultra-high pressure tool |
| CN202082175U (en) * | 2011-06-22 | 2011-12-21 | 长沙中联重工科技发展股份有限公司 | Hydraulic control system and concrete pumping system equipped with same |
| CN202969274U (en) * | 2012-08-09 | 2013-06-05 | 宁波创力液压技术工程有限公司 | Ultrahigh pressure automatic tension hydraulic system for bridges on railway and highway |
| CN107366649A (en) * | 2017-07-21 | 2017-11-21 | 徐州徐工液压件有限公司 | A kind of large-tonnage tower crane twin-tub jacking apparatus and electrohydraulic control system |
| CN109956401A (en) * | 2019-04-11 | 2019-07-02 | 北京智盛和创科技有限公司 | A kind of tower crane jack-up system |
| CN216426517U (en) * | 2021-11-22 | 2022-05-03 | 徐州建机工程机械有限公司 | Tower crane hydraulic jacking system with emergency jacking unit |
-
2022
- 2022-09-19 CN CN202211135743.0A patent/CN115490163A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT296027B (en) * | 1968-08-17 | 1972-01-25 | Herion Werke K G | Safety control, especially for crank and eccentric press drives |
| CN101498324A (en) * | 2009-03-02 | 2009-08-05 | 北京联合大学 | Hydraulic pressure booster for ultra-high pressure tool |
| CN202082175U (en) * | 2011-06-22 | 2011-12-21 | 长沙中联重工科技发展股份有限公司 | Hydraulic control system and concrete pumping system equipped with same |
| CN202969274U (en) * | 2012-08-09 | 2013-06-05 | 宁波创力液压技术工程有限公司 | Ultrahigh pressure automatic tension hydraulic system for bridges on railway and highway |
| CN107366649A (en) * | 2017-07-21 | 2017-11-21 | 徐州徐工液压件有限公司 | A kind of large-tonnage tower crane twin-tub jacking apparatus and electrohydraulic control system |
| CN109956401A (en) * | 2019-04-11 | 2019-07-02 | 北京智盛和创科技有限公司 | A kind of tower crane jack-up system |
| CN216426517U (en) * | 2021-11-22 | 2022-05-03 | 徐州建机工程机械有限公司 | Tower crane hydraulic jacking system with emergency jacking unit |
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Application publication date: 20221220 |
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| RJ01 | Rejection of invention patent application after publication |