Energy storage type tower crane control system

Abstract

The invention provides an energy storage type tower crane control system which is provided with energy storage and power generation equipment and performs intelligent management on electric energy through an energy storage unit (including charge and discharge management). The total equipment cost can be reduced, and a large generator and a large-current power supply cable are omitted; operation efficiency can be improved, the tower crane can be operated and used at any time, and a large generator does not need to be started firstly; the use cost can be reduced; the installation efficiency can be improved, and the energy storage unit can be directly and integrally hoisted; and the electric energy can be recovered in the operation power generation state of the tower crane, the electric energy can be supplemented at any time through wind, the sun, a small-sized generator and other modes, and the tower crane is convenient, flexible and low in cost. The problems that in the prior art, cost is too high, energy is wasted, and use and installation are inconvenient are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tower crane control systems, and more specifically, relates to an energy storage type tower crane control system. Background Art

[0002] Currently, when tower cranes are in use in remote areas, a diesel generator needs to be used at the bottom of the tower crane to generate electricity, and then the electric energy is transmitted to the tower crane through a cable for use by the control system. The existing technical solutions have the following defects: 1. The cost is too high, and a large generator and a large current power supply cable need to be equipped; 2. Energy is wasted. During the operation of the tower crane, the generated electric energy can only be consumed by a braking resistor and cannot be recovered; 3. The usage cost is too high. The generator needs to keep generating electricity during use; 4. It is inconvenient to use. The generator needs to be started to generate electricity before each use; 5. The installation is too complex. The tower crane needs to be installed after the generator is installed. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide an energy storage type tower crane control system. This system is equipped with energy storage and power generation equipment, and the electric energy is intelligently managed through an energy storage unit (including charge and discharge management). The present invention can solve the problems of high cost, energy waste, inconvenient use and installation in the existing technical solutions. Specifically, this system can reduce the overall equipment cost, eliminating the need for a large generator and a large current power supply cable; it can improve the operation efficiency, and the tower crane can be operated at any time without the need to start a large generator first; it can reduce the usage cost. When the tower crane stops running, it does not consume electricity, and the large generator in the existing technical solution cannot be frequently started and stopped after it is started; it can improve the installation efficiency. The energy storage unit can be directly hoisted as a whole without the need to install the generator first; it can realize energy recovery and charging. When the tower crane is in the power generation operation state, the electric energy can be recovered, and it can be supplemented with electric energy through various methods such as wind, sun, and small generators at any time, which is convenient, flexible and low-cost.

[0004] The technical solution adopted by the present invention is as follows:

[0005] An energy storage type tower crane control system, which includes a tower crane device, an energy storage unit, and a small power generation device. The energy storage unit is directly connected to the DC bus of the control system, and can supply power for the operation of the tower crane, and can also be charged during the power generation operation state of the tower crane or through the small power generation device.

[0006] Further, the tower crane device can be in the form of a luffing jib tower crane, a flat-top tower crane, a tower-cap tower crane, a portal jib crane, a bridge-type gantry crane, etc.

[0007] Further, the energy storage part in the energy storage unit can be in various forms such as energy storage batteries, supercapacitors, fuel cells, etc.

[0008] Further, the small power generation device can be a wind turbine, a solar power generation device, a small generator, charging through a small cable connected to the power grid, etc.

[0009] Further, the energy storage unit is placed at the counterweight position of the balance arm of the tower crane, acting as part of the counterweight function to optimize the overall counterweight design.

[0010] Further, the energy storage type tower crane control system is also equipped with a braking unit (including a braking resistor) for consuming the electric energy generated when the energy storage unit is fully charged through the braking resistor to prevent overcharging of the energy storage unit or overvoltage protection of the electric control.

[0011] Further, during the operation of the tower crane, the energy storage type tower crane control system draws power from the energy storage unit in the power consumption state to drive the system to operate; in the power generation state, the generated electric energy is directly charged into the energy storage unit for energy recovery.

[0012] Further, the small power generation device can charge the energy storage unit when the tower crane is working or not working. When the tower crane is in the non - working state, the energy storage unit should continuously maintain a full - charge state to ensure that there is sufficient electric energy at any time during the working state of the tower crane.

[0013] Advantages of the present invention:

[0014] By equipping with energy storage and power generation devices and intelligently managing electric energy through the energy storage unit (including charge - discharge management), this system can reduce the overall equipment cost, eliminate large generators and large - current power supply cables; improve the operation efficiency, as the tower crane can be operated at any time without the need to start a large generator first; reduce the usage cost; improve the installation efficiency, as the energy storage unit can be directly hoisted as a whole; and can realize energy recovery and charging. When the tower crane is in the power generation state, electric energy can be recovered, and electric energy can be supplemented at any time through various methods such as wind, sun, and small generators, which is convenient, flexible, and low - cost. Specific embodiments

[0015] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0016] Embodiment:

[0017] This system includes a tower crane device, an energy storage unit, and a small power generation device. The energy storage unit is directly connected to the DC bus of the control system, can supply power for the operation of the tower crane, and can also be charged during the power generation operation state of the tower crane or through the small power generation device.

[0018] More specifically, the tower crane equipment can be in the forms of luffing jib tower cranes, flat-top tower cranes, tower-cap tower cranes, portal jib cranes, bridge gantry cranes, etc.

[0019] More specifically, the energy storage part in the energy storage unit can be in various forms such as energy storage batteries, supercapacitors, fuel cells, etc.

[0020] More specifically, the small power generation equipment can be wind turbines, solar power generation equipment, small generators, charging from the power grid by connecting a small cable, etc.

[0021] More specifically, the energy storage unit is placed at the position of the counterweight block on the counter jib of the tower crane.

[0022] More specifically, the energy storage type tower crane control system is also equipped with a braking unit (including a braking resistor) for consuming the electric energy generated when the energy storage unit is fully charged through the braking resistor to prevent overcharging of the energy storage unit or overvoltage protection of the electric control.

[0023] More specifically, during the use of the tower crane, the power consumption state draws power from the energy storage unit to drive the system to operate; the electric energy generated in the power generation state is directly charged into the energy storage unit for energy recovery.

[0024] More specifically, when the tower crane is not working, the energy storage unit is charged by the wind power generation equipment and continuously maintains a full charge state to ensure that there is sufficient electric energy at any time during the working state of the tower crane. In an environment with poor wind conditions, low-cost power generation equipment such as solar panels and small generators is equipped to charge the energy storage unit.

[0025] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A control system for an energy storage tower crane, characterized in that, The system includes a tower crane device, an energy storage unit, and a small power generation device. The energy storage unit is directly connected to the DC bus of the control system, and can supply power for the operation of the tower crane, or can be charged during the power generation operation state of the tower crane or through the small power generation device.

2. The energy storage type tower crane control system according to claim 1, characterized in that The tower crane device is a luffing jib tower crane / flat top tower crane / tower cap tower crane / portal bridge crane / bridge gantry crane, etc.

3. The energy storage type tower crane control system according to claim 1, characterized in that, The energy storage part in the energy storage unit is an energy storage battery / super capacitor / fuel cell, etc.

4. The energy storage type tower crane control system according to claim 1, characterized in that, The small power generation device is a wind turbine / solar power generation device / small generator / charging through the grid by connecting a small cable, etc.

5. A control system for an energy storage tower crane according to any one of claims 2 to 4, characterized in that The energy storage unit is placed at the counterweight position of the balance arm of the tower crane and acts as part of the counterweight.

6. The energy storage type tower crane control system according to claim 5, characterized in that The system includes a braking unit (including a braking resistor), which is used to consume the electric energy continuously generated after the energy storage unit is fully charged through the braking resistor to prevent overcharging of the energy storage unit or overvoltage protection of the electric control.

7. The energy storage type tower crane control system according to claim 6, characterized in that, When the tower crane is in use and in a power consumption state, the control system draws power from the energy storage unit to drive the system to operate; in a power generation state, the generated electric energy is directly charged into the energy storage unit for energy recovery.

8. A control system for an energy storage tower crane according to claim 7, characterized in that, The small power generation device can charge the energy storage unit when the tower crane is working / not working. When the tower crane is in a non-working state, the energy storage unit should continuously maintain a full charge state to ensure that there is sufficient electric energy at any time during the working state of the tower crane.