Construction hoist and electric control system thereof

Abstract

The utility model relates to the field of construction hoists, and discloses a construction hoist and an electric control system thereof. The electric control system comprises an operation table used for being operated by a person, arranged in a cage of the construction hoist and provided with an operation handle, and the operation handle is used for sending out an operation instruction for controlling the cage to execute the lifting action; the leveling operation panel is used for unmanned operation, is arranged in the lifting cage and is provided with leveling keys, and the leveling keys are used for sending out an operation instruction for controlling the lifting cage to ascend and descend to a specified floor; the floor calling devices are distributed in a plurality of floors, and the floor calling devices are used for sending operation instructions for controlling the cages to ascend and descend to the floors where the floor calling devices are located; and the controller is used for receiving operation instructions sent by the operation table, the leveling operation panel and the floor beeper and controlling the lifting cage to ascend and descend. The construction hoist is used for solving the problem that the construction hoist is inconvenient to use, and the effects that manual operation can be achieved, unmanned operation can also be achieved, and the operation modes can be flexibly switched are achieved.

Description

Technical Field

[0001] This application belongs to the field of construction hoists, and particularly relates to a construction hoist and its electric control system. Background Art

[0002] A construction hoist is a construction machine for carrying people and goods that is often used in construction, mainly used in various high-rise and super-high-rise buildings in the city, and is usually used in conjunction with a tower crane. A construction hoist generally consists of a cage, a driving mechanism, standard sections, wall attachments, a chassis, a fence, an electrical system, etc.

[0003] There are many types of construction hoists. According to the driver situation, they can be divided into manned construction hoists and unmanned construction hoists. Manned construction hoists are flexible and convenient to use, but they must be equipped with a dedicated driver. Unmanned construction hoists do not require a dedicated operator, but can only operate strictly according to procedures, which is inconvenient to use. In the prior art, usually only one type of construction hoist can be set on the same tower crane, and neither manned construction hoists nor unmanned construction hoists can meet the changing operation requirements at the construction site. Utility Model Content

[0004] The purpose of this application is to provide a construction hoist and its electric control system, which is used to solve the problem of inconvenient use of the construction hoist, achieving the effect that it can be either manually operated or unmanned, and the operation mode can be flexibly switched.

[0005] To achieve the above purpose, in the first aspect of this application, an electric control system for a construction hoist is provided, and the electric control system includes:

[0006] An operation console for manned operation, which is arranged in the cage of the construction hoist and is provided with an operation handle, and the operation handle is used to issue an operation instruction for controlling the cage to perform lifting and lowering actions;

[0007] A leveling operation panel for unmanned operation, which is arranged in the cage and is provided with leveling buttons, and the leveling buttons are used to issue an operation instruction for controlling the cage to lift and lower to a specified floor;

[0008] Floor call devices, which are distributed on several floors, and the floor call devices are used to issue an operation instruction for controlling the cage to lift and lower to the floor where the floor call device is located;

[0009] A controller, which receives the operation instructions issued by the operation console, the leveling operation panel, and the floor call devices, and controls the cage to rise and fall.

[0010] In some embodiments, the operation console or the leveling operation panel further includes a start button for starting the cage to rise and fall, and an emergency stop button for urgently stopping the cage from rising and falling.

[0011] In some embodiments, the operating platform further includes a display screen for displaying operation information or a face recognition module for verifying the identity of the driver.

[0012] In some embodiments, the leveling operation panel further includes a display screen for displaying floor information or a visual recognition module for identifying the number of passengers in the cage.

[0013] In some embodiments, the electric control system further includes a wireless communication module for connecting the floor call device and the controller.

[0014] In some embodiments, the controller is a programmable logic controller (PLC).

[0015] In some embodiments, the electric control system further includes an inverter. The inverter receives the control signal sent by the controller and drives the motor on the cage according to the preset acceleration and deceleration operation time and operation frequency.

[0016] In some embodiments, the electric control system further includes a power supply circuit composed of a switching power supply, a contactor, an over-voltage and under-voltage relay, and a protective circuit breaker.

[0017] In some embodiments, the electric control system further includes a cage detection circuit composed of an upper limit switch, a lower limit switch, an upper extreme limit switch, and a lower extreme limit switch.

[0018] The second aspect of the present application provides a construction hoist, including a cage and the above-mentioned electric control system.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows:

[0020] The electric control system of the present application combines an operating platform for the driver, a leveling operation panel for the user, and a floor call device. The two can be flexibly switched, enabling the construction hoist to be operated either manually or unmanned, enhancing the adaptability of the construction hoist to the changing needs of the construction site, and thus solving the problem of inconvenient use of the construction hoist.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0023] Figure 1 This is the architecture diagram of the electric control system of the construction elevator in the specific embodiment of the present application. Specific embodiment

[0024] The following will describe the specific embodiment of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiment described herein is only used to illustrate and explain the present application, and is not used to limit the present application.

[0025] As Figure 1 shown, an electric control system of a construction elevator includes:

[0026] An operating console for manual operation, which is arranged in the cage of the construction elevator and is provided with an operating handle. The operating handle is used to issue an operation instruction for controlling the cage to execute the lifting and lowering actions.

[0027] A leveling operation panel for unmanned operation, which is arranged in the cage and is provided with leveling buttons. The leveling buttons are used to issue an operation instruction for controlling the cage to lift and lower to a specified floor.

[0028] Floor call devices are distributed on several floors. The floor call devices are used to issue an operation instruction for controlling the cage to lift and lower to the floor where the floor call device is located.

[0029] A controller receives the operation instructions issued by the operating console, the leveling operation panel and the floor call devices, and controls the cage to rise and fall.

[0030] In the present application, when manual operation is required, the driver can issue an operation instruction to the controller through the operating handle on the operating console, so that the cage can perform flexible and precise jogging up and down. After the controller calibrates the floors, when unmanned operation is required, the user can issue an operation instruction to the controller through the leveling buttons on the leveling operation panel or the floor call devices on the floors, so that the cage can automatically lift and lower to the specified floor. The controller can be switched between manual operation and unmanned operation through a key switch. In the manual operation mode, the controller only responds to the operation instructions from the operating console; in the unmanned operation mode, the controller only responds to the operation instructions from the leveling operation panel and the floor call devices. The controller can also use the operating handle as the trigger condition for the above-mentioned mode switch. The controller defaults to the unmanned operation mode. When the operating handle moves, the controller automatically switches to the manual operation mode. The electric control system of the present application combines the operating console for the driver, the leveling operation panel for the user and the floor call devices. The two can be flexibly switched, so that the construction elevator can be operated either manually or unmanned, enhancing the adaptability of the construction elevator to the changing needs on the construction site, and thus solving the problem of inconvenient use of the construction elevator.

[0031] Specifically, the operation console or the landing operation panel further includes start buttons for starting the hoist cage to rise and fall, and emergency stop buttons for emergently stopping the hoist cage from rising and falling.

[0032] Specifically, the operation console further includes a display screen for displaying operation information or a face recognition module for verifying the identity of the driver. The face recognition module generally includes a camera and a corresponding data processing board. The camera captures the face image of the driver, and after being recognized and compared by the data processing board, it sends a signal of whether to authorize the operation to the controller, thereby preventing illegal operation of the construction hoist.

[0033] Specifically, the landing operation panel further includes a display screen for displaying floor information or a visual recognition module for identifying the number of passengers in the hoist cage. The visual recognition module generally includes a camera and a corresponding data processing board. The camera captures the overhead image or bird's-eye view image inside the hoist cage, and after being recognized and calculated by the data processing board, it sends a signal of the number of passengers to the controller, thereby preventing the mixing of people and goods or overloading of personnel in the construction hoist when there is no operator.

[0034] Specifically, the electric control system further includes a wireless communication module for connecting the floor call device and the controller. The floor call devices are usually distributed on different floors, while the controller is set inside the hoist cage. Connecting the floor call device and the controller using a wireless communication module can simplify the installation wiring of the construction hoist and also facilitate the distribution adjustment of the floor call devices on the floors.

[0035] Specifically, the controller is a programmable logic controller PLC.

[0036] In some embodiments, the electric control system is divided into two major parts: an operation console and an electric control box. The operation console is separately set inside the cockpit of the hoist cage, and the electric control box is set on the side wall of the hoist cage. Operation handles, start buttons, emergency stop buttons, displays, and face recognition modules are distributed on the operation console. The landing operation panel is separately set on the side wall of the hoist cage or integrated on the door panel of the electric control box. Landing buttons, start buttons, emergency stop buttons, displays, and visual recognition modules are distributed on the landing operation panel. Among them, the landing buttons are a numeric keypad including numbers 0 - 9, and the camera of the visual recognition module is set on the top of the hoist cage. The operation console and the landing operation panel are respectively connected to the controller through a group of communication cables.

[0037] Specifically, the electric control system further includes a frequency converter. The frequency converter receives the control signal sent by the controller and drives the motor on the hoist cage according to the preset acceleration and deceleration operation time and operation frequency. The motor driving the hoist cage in the construction hoist is usually an AC asynchronous motor. Using a frequency converter can flexibly adjust the speed of the motor, enable the hoist cage to obtain different lifting speeds, and operate smoothly without impact, thereby enhancing the convenience and versatility of the construction hoist.

[0038] Specifically, the electric control system further includes a power supply circuit composed of a switching power supply, a contactor, an over- and under-voltage relay, and a protective circuit breaker. The power supply circuit has functions of overvoltage protection, undervoltage protection, and short-circuit protection, thereby ensuring the normal power supply of the electric control system and improving the safety and reliability of the construction elevator.

[0039] Specifically, the electric control system further includes a cage detection circuit composed of an upper limit switch, a lower limit switch, an upper extreme limit switch, and a lower extreme limit switch. The limit switches usually consist of limit bumpers and limit switches, and the limit switches are connected to the controller to send detection signals of the cage position. The upper limit switch installed on the top of the cage can prevent the cage from overtopping; the lower limit switch installed at the bottom of the cage can make the cage stop accurately at the floor. When the cage runs to the highest position and exceeds the upper limit switch, or runs to the lowest position and exceeds the lower limit switch, the upper extreme limit switch and the lower extreme limit switch can cut off the power supply in time to stop the cage, avoiding the cage from falling off the track, and thus improving the safety of the construction elevator.

[0040] In some embodiments, a controller, a wireless communication module, a frequency converter, a power supply circuit, and a cage detection circuit are arranged in the electric control box. When the construction elevator is working, the controller collects and processes the operation instructions sent by the operation console, the leveling operation panel, and the floor call device. At the same time, the controller also collects the detection signals of the power supply circuit and the cage detection circuit. After judging that the cage can be safely lifted and lowered, the controller sends a control signal to the frequency converter; the frequency converter drives the motor of the cage to work according to parameters such as the set acceleration and deceleration running time and running frequency; the motor drives the cage to rise or fall.

[0041] A construction elevator includes a cage and the above-mentioned electric control system.

[0042] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In the present application, unless otherwise clearly specified and limited, the terms "install", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0044] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An electric control system for a construction hoist, characterized in that, The electric control system includes: An operation console for manual operation. The operation console is arranged inside the cage of the construction hoist and is provided with an operation handle. The operation handle can be used by the driver to issue an operation instruction for controlling the cage to perform lifting and lowering actions. A leveling operation panel for unmanned operation. The leveling operation panel is arranged inside the cage and is provided with leveling buttons. The leveling buttons can be used by the user to issue an operation instruction for controlling the cage to lift or lower to a specified floor. Floor call devices distributed on several floors. The floor call devices can be used by the user to issue an operation instruction for controlling the cage to lift or lower to the floor where the floor call device is located. A controller that receives the operation instructions issued by the operation console, the leveling operation panel, and the floor call devices, and controls the cage to rise and fall. The controller is used to switch between manual operation and unmanned operation through a key switch. The electric control system further includes an upper limit switch arranged on the top of the cage and a lower limit switch arranged on the bottom of the cage. The upper limit switch and the lower limit switch are used to respectively send detection signals of the cage position to the controller.

2. The electronic control system according to claim 1, characterized in that, The operation console or the leveling operation panel further includes a start button for starting the cage to rise and fall, and an emergency stop button for urgently stopping the cage from rising and falling.

3. The electronic control system according to claim 1, wherein The operation console further includes a display screen for displaying operation information or a face recognition module for verifying the identity of the driver.

4. The electronic control system according to claim 1, characterized in that, The leveling operation panel further includes a display screen for displaying floor information or a visual recognition module for identifying the number of passengers in the cage.

5. The electronic control system according to claim 1, wherein The electric control system further includes a wireless communication module for connecting the floor call devices and the controller.

6. The electronic control system according to claim 1, characterized in that The controller is a programmable logic controller PLC.

7. The electronic control system according to any one of claims 1 to 6, characterized in that The electric control system further includes a frequency converter. The frequency converter receives the control signal issued by the controller and drives the motor on the cage according to the preset acceleration and deceleration operation time and operation frequency.

8. The electronic control system according to claim 7, characterized in that, The electric control system further includes a power supply circuit composed of a switching power supply, a contactor, an over- and under-voltage relay, and a protective circuit breaker.

9. The electronic control system according to claim 7, wherein The electric control system further includes a cage detection circuit composed of an upper extreme limit switch and a lower extreme limit switch.

10. A construction hoist, characterized in that, It includes a cage and the electric control system according to any one of claims 1 to 9.

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