CN111963502A - Transmission line tower lifting device and method - Google Patents
Transmission line tower lifting device and method Download PDFInfo
- Publication number
- CN111963502A CN111963502A CN202010800823.8A CN202010800823A CN111963502A CN 111963502 A CN111963502 A CN 111963502A CN 202010800823 A CN202010800823 A CN 202010800823A CN 111963502 A CN111963502 A CN 111963502A
- Authority
- CN
- China
- Prior art keywords
- lifting
- transmission line
- hydraulic cylinder
- hydraulic
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/765—Control of position or angle of the output member
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
Abstract
The invention discloses a lifting device and a lifting method for a power transmission line tower, wherein the device comprises a hydraulic pump station, a plurality of hydraulic cylinders, a control console, a jacking support and an inclination angle sensor, when the lifting device is used for lifting, the jacking support is fixed on the power transmission line tower, the bottom of each hydraulic cylinder is fixed on the ground, the top of each hydraulic cylinder is connected with the jacking support, the inclination angle sensor is arranged on the power transmission line tower, and in the lifting process, the control console controls the advancing of each hydraulic cylinder according to signals collected by the inclination angle sensor, so that each hydraulic cylinder can be synchronously lifted in the lifting process; the hydraulic pump station provides hydraulic oil with certain pressure and oil quantity for the hydraulic cylinder through a hydraulic oil pipe. The invention can realize the integral stable lifting of the transmission line tower on the original installation site, and has the advantages of safety, reliability and small requirement on the operation environment.
Description
Technical Field
The invention relates to the field of power transmission equipment research, in particular to a device and a method for lifting a power transmission line tower.
Background
The tower is integrally lifted, and the common methods include two methods:
one type is 'holding rod type' integral lifting, and four main materials of a tower are lifted to a certain height simultaneously through four holding rods. Lifting the square holding rod with the length of 10 meters by using a motorized winch, fixing the bottom of the square holding rod on a steel plate, fixing the top of the square holding rod at the position of a tower leg main material, hoisting the first inclined material position above the subsection position of the tower leg main material by using a steel wire rope sleeve, and installing 2 holding rod pull wires. The bottom of the holding pole is fixed by 3 corner piles and a steel wire rope sleeve. Simultaneously, the winching is started, and the same height is reached through the judgment of human eyes. Although the method has low requirements on conditions of a construction site and low required construction cost, the method needs a long construction period, has high construction risk for large towers and has a long power failure requirement time for the whole transmission line. In addition, the synchronous lifting of four legs is judged by human eyes, and if the error is large, secondary damage to the iron tower can be caused, for example, the main material of the tower is bent, so that a major accident is caused.
The other type is 'crane' integral lifting, and the tower is integrally lifted through a large crane. The lifting mode has the advantages of short construction period, simple construction and small risk, has higher reliability and short power failure time, but is easily influenced by the construction operation environment due to the structural problem of the crane, needs to have enough crane operation surface and road environment which accords with crane approach construction, and has higher operation requirement, higher construction limitation and very high cost.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provide a lifting device and a lifting method for a power transmission line tower, which can realize the integral stable lifting of the power transmission line tower in the original installation place and have the advantages of safety, reliability and low requirement on the operating environment.
The purpose of the invention is realized by the following technical scheme: a lifting device for a power transmission line tower comprises a hydraulic pump station, a plurality of hydraulic cylinders, a control console, a jacking support and an inclination angle sensor, wherein when the lifting device is used for lifting, the jacking support is fixed on the power transmission line tower, the bottoms of the hydraulic cylinders are fixed on the ground, the tops of the hydraulic cylinders are connected with the jacking support, the inclination angle sensor is arranged on the power transmission line tower, and in the jacking process, the control console controls the hydraulic cylinders to move forward according to signals collected by the inclination angle sensor, so that the hydraulic cylinders can be synchronously lifted in the lifting process; the hydraulic pump station provides hydraulic oil with certain pressure and oil quantity for the hydraulic cylinder through a hydraulic oil pipe.
Preferably, the hydraulic power unit comprises a pump, an oil tank and a control valve, the control valve is connected with the console, and when the control valve is switched on, the pump conveys hydraulic oil in the oil tank to the hydraulic cylinder.
Preferably, the tilt sensor is a dual-axis tilt sensor.
Preferably, the hydraulic cylinder comprises a stroke sensor and a proportional servo valve, the stroke sensor acquires displacement of a piston rod in the hydraulic cylinder, and the proportional servo valve controls the piston rod to generate displacement under the control of the console.
Preferably, the jacking support and the transmission line tower are in a detachable connection mode.
Preferably, a man-machine interaction module and an emergency stop module are arranged on the console.
Preferably, the hydraulic pump station, the console and the hydraulic cylinder are designed in a split mode. Convenient transportation, installation and dismantlement.
A lifting method based on the transmission line tower lifting device comprises the following steps:
fixing a jacking support below four tower feet of the power transmission line tower, and fixing a hydraulic cylinder below the jacking support;
leveling the power transmission line tower by using an inclination angle sensor;
in the jacking process, the control console carries out independent adjustment on each hydraulic cylinder according to signals collected by the inclination angle sensor, so that each hydraulic cylinder can be synchronously lifted, and the tower mounting base is always kept in a horizontal state.
Preferably, the lifting is carried out in multiple stages, each lifting does not exceed a set value, after one-stage lifting is completed, the tower body is fixed, oil is returned from the hydraulic cylinder, the lifting towers with the same height are installed below the hydraulic cylinder, and after the hydraulic cylinder is fixed, the tower lifting action is carried out; and lifting in multiple stages until the tower is lifted to a safe height.
Preferably, the leveling step is: the inclination angle sensor collects the inclination angle of the power transmission line tower in real time and sends the inclination angle to the control console, the control console calculates the displacement of the corresponding hydraulic cylinder according to the inclination angle, and then the control signal is sent to the proportional servo valve of the corresponding hydraulic cylinder, so that the corresponding hydraulic cylinder generates displacement until the leveling precision is achieved.
Preferably, the console can input various instructions of the lifting process in a man-machine interaction mode, so that switching of an automatic lifting mode, a manual control mode and a fault mode is realized, and various parameters of lifting work are input in the man-machine interaction mode.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the transmission line tower lifting device can realize integral lifting of the iron tower and the wires, fundamentally solves the hidden troubles of damaging the operation safety of the transmission line, such as insufficient safety distance, damaged iron tower foundation and the like in the prior art, replaces the original route changing mode with long time consumption, difficult power failure and high cost, can not only solve the hidden troubles of insufficient safety distance of the wires to the ground, but also save the power failure time to the maximum extent, save time, labor and investment, and provides a new idea for efficiently treating the external hidden troubles of the transmission line.
2. The lifting device and the lifting method for the electric line tower are suitable for various construction terrains and conditions, can stably, simply and efficiently integrally lift the tower, and solve the practical problems that the tower foundation is buried and the like.
3. The invention can realize in-situ lifting and transformation without changing the range of a line protection area, avoids the procedures of land acquisition and removal, foundation remaking, tower line erecting construction and the like, does not need a new tower position, has small influence on the environment and avoids disputes with local people.
4. The invention realizes the functions of real-time monitoring and automatic deviation rectification of the inclination state of the tower of the power transmission line by using the existing tower deviation rectification technology and combining the advanced automatic leveling technology in the lifting process of the hydraulic tower crane of the power transmission line, and improves the stability and reliability of the integral lifting.
Drawings
Fig. 1 is a schematic structural composition diagram of a power transmission line tower lifting device according to an embodiment of the invention.
Fig. 2 is a structural diagram of a control circuit in the power transmission line tower lifting device according to the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1, the embodiment of the invention discloses a lifting device for a power transmission line tower, which comprises a hydraulic pump station 1 (comprising a pump 7, an oil tank 8 and a control valve 9), four hydraulic servo oil cylinders 2 (comprising a stroke sensor 10 and a proportional servo valve 11), a control console 3 (chamber), a set of detachable jacking support 4, a double-shaft tilt angle sensor 5 and a plurality of hydraulic oil pipes 6.
In this embodiment, hydraulic power unit includes pump, oil tank, control valve, and the control valve is connected with the control cabinet, and when the control valve switches on, the hydraulic oil of pump in with the oil tank is carried hydraulic servo cylinder.
In this embodiment, the four hydraulic servo cylinders vertically lift the whole transmission line tower through the detachable lifting support attached to the transmission line tower. Each hydraulic servo oil cylinder 2 comprises a stroke sensor and a proportional servo valve, the stroke sensor acquires the displacement of a piston rod in the hydraulic cylinder, and the proportional servo valve controls the piston rod to generate displacement under the control of the console.
In this embodiment, the transmission line tower lifting device can realize the overall stable lifting of the original installation site for the transmission line tower, and includes the following steps:
s1, mounting the detachable jacking support 4 on four tower feet of the power transmission line tower through a jacking support connecting frame; the four hydraulic cylinders 2 are fixed on the ground and connected with the jacking bracket 4; mounting a double-shaft tilt angle sensor 5 on a power transmission line tower;
s2, the console 3 drives the hydraulic pump station 1 to level the four oil cylinders 2;
s3, after leveling is finished, the console independently adjusts each hydraulic cylinder according to signals collected by the double-shaft tilt angle sensor, so that 4 hydraulic cylinders can be synchronously lifted, and the tower mounting base is always kept in a horizontal state.
According to actual construction requirements, the jacking height of a common transmission line tower is not more than 6 meters. In this embodiment, the basic parameters of the hydraulic system are as follows: the pressure is 10-20 Mpa, the flow is 20l/min, the motor power is 7.5kW, the cylinder diameter of the hydraulic cylinder is 140mm, and the stroke of the hydraulic cylinder is 700 mm. Because the lifting height is greater than the stroke of the hydraulic cylinder, the whole process of tower lifting needs to be carried out in multiple sections, and the lifting is not more than 0.6 meter at each time according to the stroke of the hydraulic cylinder in the embodiment. After the primary lifting is completed, lifting towers are arranged under four tower feet of the tower, after the tower body is fixed, oil is returned from four hydraulic cylinders, the lifting towers with the same height are arranged under the hydraulic cylinders, and after the oil cylinders are fixed, the same operation is carried out to lift the tower. And lifting in a reciprocating manner until the tower is lifted to a safe height.
The tower lifting device performs leveling work before lifting each time, and the control console controls the corresponding proportional servo valve according to signals collected by the double-shaft tilt angle sensor to enable the corresponding hydraulic cylinder to generate displacement until the leveling precision is reached.
The tower lifting device can automatically adapt to the loaded deformation of each oil cylinder supporting point (foundation), and according to signals collected by the double-shaft tilt angle sensor, the corresponding servo valve is controlled by the control console, so that the corresponding hydraulic cylinder generates displacement, and the automatic adjustment of the oil cylinder in the lifting process is realized. The lifting process ensures that the tower mounting base is always in a horizontal state, and the lifting safety is ensured. In the lifting process, the main material of the tower does not bear shearing force and torsion, and the main material is stressed uniformly and does not deform.
The 4 hydraulic cylinder piston rods can be started and stopped simultaneously through the control console in the lifting process, each hydraulic cylinder piston rod can independently realize independent adjustment (stop, rise or fall) of movement, and the running speed of each oil cylinder can be adjusted and finely adjusted. The control system can ensure that the hydraulic lifting system can realize emergency stop.
The control console can input various instructions in the lifting process in a man-machine interaction mode, and can realize switching of control modes such as an automatic lifting mode, a manual control mode and a fault mode. Various parameters for improving work can be input in a man-machine interaction mode.
When in actual use, the hydraulic pump station, the control console and the hydraulic servo oil cylinder can adopt a split type design, so that the hydraulic pump station and the hydraulic servo oil cylinder are convenient to carry, light in weight as much as possible, and convenient to transport, install and disassemble.
Fig. 2 shows a schematic diagram of a control circuit in the power transmission line tower lifting device according to the embodiment of the invention, wherein the oil absorption filter 1 in the control circuit is used for protecting an oil pump and other hydraulic elements so as to avoid sucking in polluted impurities, effectively control pollution of a hydraulic system and adjust the cleanliness of the hydraulic system. The gear pump 2 is a rotary pump for conveying oil and pressurizing the oil, the motor 3 is used for providing power for the gear pump, the pilot type overflow net 4 plays a role in adjusting inlet pressure and stabilizing pressure, the check valve 5 is used for controlling unidirectional passing of the oil, the shock-resistant pressure gauge 6 is used for displaying oil pressure, the electromagnetic reversing valve 7 is an automatic element for controlling the flowing direction of the oil, the liquid level liquid thermometer 8 is used for displaying the liquid level and the temperature of the oil in the oil pump, the air filter 9 is used for protecting the oil pump and other hydraulic elements to avoid sucking pollution impurities, the oil return filter 10 is used for filtering pollutants generated or invaded in a front system of an oil return tank, the check valve 11 is used for controlling unidirectional passing of the oil, the throttle valve 12 is used for controlling fluid flow, the synchronous shunt motor 13 is used for converting the liquid pressure energy provided by the oil pump into mechanical energy of an output shaft of the synchronous shunt motor, and the oil cylinder, 14.2, 14.3, 14.4) are hydraulic actuators for converting hydraulic energy into mechanical energy, which are moved to and fro in a straight line. When the oil pump works, the motor 3 is started to drive the gear pump 2 to rotate, and oil in the oil delivery pump enters the whole system through the check valve 5. The inlet pressure is controlled by a pilot overflow net 4, and a shock-proof pressure gauge 6 displays the pressure of the oil. When the pressure reaches a preset value, the electromagnetic directional valve 7 is adjusted to enable oil to enter the oil cylinder, and the throttle valve 12 controls the flow of the oil. Then, the pressure of the oil pump is converted into mechanical energy through the synchronous shunt motor 13, and synchronous lifting action is realized through the reciprocating motion of the oil cylinder 14. The oil returns to the oil tank through the one-way valve 11 and the oil return filter 10, and the liquid level and the temperature of the oil in the oil tank are fed back by the liquid level liquid thermometer 8 in real time.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A lifting device for a power transmission line tower is characterized by comprising a hydraulic pump station, a plurality of hydraulic cylinders, a control console, a jacking support and an inclination angle sensor, wherein when the lifting device is used for lifting, the jacking support is fixed on the power transmission line tower, the bottoms of the hydraulic cylinders are fixed on the ground, the tops of the hydraulic cylinders are connected with the jacking support, the inclination angle sensor is arranged on the power transmission line tower, and in the jacking process, the control console controls the hydraulic cylinders to move forward according to signals collected by the inclination angle sensor, so that the hydraulic cylinders can be synchronously lifted in the lifting process; the hydraulic pump station provides hydraulic oil with certain pressure and oil quantity for the hydraulic cylinder through a hydraulic oil pipe.
2. The power transmission line tower lifting device according to claim 1, wherein the hydraulic pump station comprises a pump, an oil tank and a control valve, the control valve is connected with the control console, and when the control valve is switched on, the pump conveys hydraulic oil in the oil tank to the hydraulic cylinder.
3. The power transmission line tower lifting device according to claim 1, wherein the tilt sensor is a dual-axis tilt sensor.
4. The power transmission line tower lifting device according to claim 1, wherein the hydraulic cylinder comprises a stroke sensor and a proportional servo valve, the stroke sensor collects displacement of a piston rod in the hydraulic cylinder, and the proportional servo valve controls the piston rod to generate displacement under the control of the console.
5. The transmission line tower lifting device according to claim 1, wherein the jacking bracket and the transmission line tower are detachably connected.
6. The power transmission line tower lifting device according to claim 1, wherein a human-computer interaction module and an emergency stop module are arranged on the control console;
the hydraulic pump station, the control console and the hydraulic cylinder are designed in a split mode.
7. A lifting method of a power transmission line tower lifting device based on any one of claims 1-6, characterized by comprising the steps of:
fixing a jacking support below four tower feet of the power transmission line tower, and fixing a hydraulic cylinder below the jacking support;
leveling the power transmission line tower by using an inclination angle sensor;
in the jacking process, the control console carries out independent adjustment on each hydraulic cylinder according to signals collected by the inclination angle sensor, so that each hydraulic cylinder can be synchronously lifted, and the tower mounting base is always kept in a horizontal state.
8. The lifting method according to claim 7, wherein the lifting is performed in multiple stages, each lifting does not exceed a set value, after one stage of lifting is completed, the tower body is fixed, the hydraulic cylinder is returned, the lifting towers with the same height are installed below the hydraulic cylinder, and after the hydraulic cylinder is fixed, the tower lifting action is performed; and lifting in multiple stages until the tower is lifted to a safe height.
9. The lifting method according to claim 7, characterized in that the step of leveling is: the inclination angle sensor collects the inclination angle of the power transmission line tower in real time and sends the inclination angle to the control console, the control console calculates the displacement of the corresponding hydraulic cylinder according to the inclination angle, and then the control signal is sent to the proportional servo valve of the corresponding hydraulic cylinder, so that the corresponding hydraulic cylinder generates displacement until the leveling precision is achieved.
10. The lifting method according to claim 7, wherein the console can input various instructions of the lifting process in a man-machine interaction manner, so that switching among an automatic lifting mode, a manual control mode and a fault mode is realized, and various parameters of lifting work are input in a man-machine interaction manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800823.8A CN111963502A (en) | 2020-08-11 | 2020-08-11 | Transmission line tower lifting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800823.8A CN111963502A (en) | 2020-08-11 | 2020-08-11 | Transmission line tower lifting device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111963502A true CN111963502A (en) | 2020-11-20 |
Family
ID=73365946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010800823.8A Pending CN111963502A (en) | 2020-08-11 | 2020-08-11 | Transmission line tower lifting device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111963502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436164A (en) * | 2021-11-24 | 2022-05-06 | 广西电网有限责任公司北海供电局 | Electric first-aid repair tower top lifting leveling device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724643A (en) * | 2015-03-26 | 2015-06-24 | 国家电网公司 | Double-oil-cylinder down jacking system and jacking construction method thereof |
| CN110485793A (en) * | 2019-07-31 | 2019-11-22 | 国网河北省电力有限公司 | A kind of lifting device of iron tower of power transmission line, installation method and electrification raising method |
| CN111321767A (en) * | 2020-03-17 | 2020-06-23 | 广州市极臻智能科技有限公司 | Power transmission line tower lifting system and method based on intelligent hydraulic technology |
-
2020
- 2020-08-11 CN CN202010800823.8A patent/CN111963502A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724643A (en) * | 2015-03-26 | 2015-06-24 | 国家电网公司 | Double-oil-cylinder down jacking system and jacking construction method thereof |
| CN110485793A (en) * | 2019-07-31 | 2019-11-22 | 国网河北省电力有限公司 | A kind of lifting device of iron tower of power transmission line, installation method and electrification raising method |
| CN111321767A (en) * | 2020-03-17 | 2020-06-23 | 广州市极臻智能科技有限公司 | Power transmission line tower lifting system and method based on intelligent hydraulic technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436164A (en) * | 2021-11-24 | 2022-05-06 | 广西电网有限责任公司北海供电局 | Electric first-aid repair tower top lifting leveling device and method |
| CN114436164B (en) * | 2021-11-24 | 2023-09-08 | 广西电网有限责任公司北海供电局 | Electric repair tower lifting leveling device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2013120419A1 (en) | Hydraulic lifting self-climbing template system | |
| CN110370469B (en) | Intelligent concrete cutting trolley | |
| CN207079729U (en) | Steel structure net rack jacking apparatus | |
| CN208106452U (en) | A kind of tunnel trolley template monoblock type self-checking device | |
| CN113776771B (en) | Hydraulic tail support system | |
| CN103630416B (en) | The test platform of hoisting mechanism | |
| CN111963502A (en) | Transmission line tower lifting device and method | |
| CN102496771B (en) | Method and device for installing large-sized steel structural antenna | |
| CN106948271A (en) | A kind of front leg strut elevating mechanism of highway bridging machine | |
| CN204940111U (en) | A kind of bridge detecting device | |
| US20210054637A1 (en) | Support apparatus for use in civil construction | |
| CN100526197C (en) | Bottom elevation tower crane | |
| CN103334383B (en) | Elevating device special for viaduct maintenance construction | |
| CN209163593U (en) | A kind of equipment of automatic installation H profile steel column | |
| CN107869275A (en) | A kind of electric pole adjusts bar device | |
| CN206529691U (en) | Bridge maintenance system steel construction inspection platform | |
| CN113250049B (en) | Airport rapid modularization concrete slab mounting system | |
| CN210369893U (en) | Light-duty creeping formwork system of lead screw promotion | |
| CN110700604B (en) | Assembly type laminated slab mounting trolley and using method thereof | |
| CN107916818A (en) | Integral mobile single-tube communication tower | |
| CN210368639U (en) | Convenient multi-functional bridge construction of adjusting is with support frame | |
| CN209491752U (en) | A kind of erection support of electric power overhaul robot | |
| CN220347232U (en) | Special tool for punching top plate | |
| CN114436164B (en) | Electric repair tower lifting leveling device and method | |
| CN218665255U (en) | Bridge installation auxiliary equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201120 |