Automatic leveling control device

Abstract

An automatic leveling control device comprises an elevator encoder used for monitoring the position of a cage and a traction machine used for driving the cage to move up and down. The system further comprises a PLC, a plurality of landing door control switches used for controlling opening or closing of landing doors of the flat-layer hoistways, a plurality of cage door control switches used for controlling opening or closing of cage doors of the suspension cages, and a plurality of wireless buttons used for sending suspension cage use request signals to the PLC, and the number of the landing door control switches and the number of the wireless buttons are both multiple. Each flat layer is provided with a landing door control switch and a wireless button, the PLC is electrically connected with the elevator encoder, the traction machine, the cage door control switch and the landing door control switches, and the PLC is in wireless communication with the wireless buttons through a wireless transceiver. And the control module is used for responding to the cage use request signal of the wireless button of the corresponding flat layer and controlling the traction machine to drive the cage to move to the corresponding flat layer based on the cage use request signal of the wireless button of the corresponding flat layer.

Description

Technical Field

[0001] The utility model relates to the field of leveling control, in particular to an automatic leveling control device. Background Art

[0002] Material hoists are used in construction sites, factories and other occasions. At present, the control of material hoists relies entirely on manual leveling, which is very arbitrary. Leveling is achieved by multiple people working together through watching and shouting, or by observing the hoist cage through video cameras. Manual operation leads to inaccurate stopping levels and repeated up and down operations, and safety cannot be guaranteed. Utility Model Content

[0003] In view of the technical defects and technical drawbacks in the prior art, the embodiments of the present invention provide an automatic leveling control device that overcomes the above problems or at least partially solves the above problems. The specific solution is as follows:

[0004] An automatic leveling control device comprises an elevator encoder for monitoring the position of a cage and a traction machine for driving the cage to move up and down, the device further comprising a PLC controller, a floor door control switch for controlling the opening or closing of a hoistway floor door at each level, a cage door control switch for controlling the opening or closing of a cage door, and a wireless button for sending a cage use request signal to the PLC controller, wherein the floor door control switches and wireless buttons are multiple, and each level is equipped with a floor door control switch and a wireless button, the PLC controller is electrically connected to the elevator encoder, the traction machine, the cage door control switch, and the multiple floor door control switches respectively, the PLC controller wirelessly communicates with the multiple wireless buttons via a wireless transceiver, and responds to the cage use request signal from the wireless button of the corresponding level, and controls the traction machine to drive the cage to move to the corresponding level based on the cage use request signal from the wireless button of the corresponding level;

[0005] Among them, the PLC controller is a programmable PLC controller with model 14ss2. The A signal terminal and B signal terminal of the PLC controller are connected to the corresponding signal terminals of the RF transceiver, and wireless communication with the wireless button is achieved through the RF transceiver. The PLC controller is electrically connected to the two signal output terminals corresponding to the elevator encoder through the X01 and X02 signal terminals, and is electrically connected to the two signal input terminals of the traction machine through the Y36 and Y37 signal terminals. The X07 signal terminal of the PLC controller is electrically connected to the floor door control switch of the first floor, the X20 to X27 signal terminals of the PLC controller are electrically connected to the floor door control switches of the 2nd to 9th floors respectively, the X30 to X36 signal terminals of the PLC controller are electrically connected to the floor door control switches of the 10th to 16th floors respectively, and the X37 signal terminal of the PLC controller is electrically connected to the cage door control switch.

[0006] Furthermore, the device also includes a first relay switch for controlling the upward movement of the cage, a second relay switch for controlling the downward movement of the cage, and a second relay switch for controlling the electric bell. The first relay switch, the second relay switch, and the second relay switch are electrically connected to the Y01, Y02, and Y03 signal terminals of the PLC controller, respectively.

[0007] Furthermore, the device also includes a human body detection module for sensing the human body. The human body detection module is arranged in the detection area. The human body detection module is electrically connected to the PLC controller and is used to send a detection signal to the PLC controller. The PLC is used to control the emergency stop of the cage when the human body detection module senses that there is someone in the detection area.

[0008] Furthermore, the device also includes a first-floor leveling switch for detecting whether the cage has reached the first floor. The first-floor leveling switch is electrically connected to the PLC controller to send a corresponding detection signal to the PLC controller when the cage moves to the first floor.

[0009] Furthermore, the device also includes an emergency stop switch for controlling the emergency stop of the cage, and the emergency stop switch is electrically connected to the PLC controller for sending an emergency stop signal to the PLC controller, and the PLC controller is used to control the emergency stop of the cage based on the emergency stop signal.

[0010] Furthermore, the device also includes a door indicator light and a fault alarm light, and the door indicator light and the fault alarm light are both electrically connected to the PLC controller.

[0011] Furthermore, the device also includes a leveling indicator light and a preselection indicator light, and the leveling indicator light and the preselection indicator light are both electrically connected to the PLC controller.

[0012] Furthermore, the device also includes an upper limit switch and a lower limit switch, the upper limit switch is installed at the upper end of the cage operating shaft, and the lower limit switch is installed at the lower end of the cage operating shaft, and the upper limit switch and the lower limit switch are both electrically connected to the PLC controller.

[0013] The utility model has the following beneficial effects:

[0014] The utility model provides an automatic leveling control device that can automatically control the cage and realize intelligent leveling operation, thereby improving efficiency, enhancing operational safety, and reducing excessive damage to equipment caused by human operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an automatic leveling control device provided by an embodiment of the present utility model;

[0016] Figure 2 A circuit diagram of the PLC automatic leveling control provided by an embodiment of the present utility model;

[0017] In the figure: 1-PLC controller, 2. Wireless button, 3. Landing door control switch, 4. Elevator encoder, 5. Traction machine, 6. First floor leveling switch. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, an automatic leveling control device provided by an embodiment of the present invention includes an elevator encoder 4 for monitoring the position of the cage and a traction machine 5 for driving the cage to move up and down, and also includes a PLC controller 1, a floor door control switch 3 for controlling the opening or closing of each leveling shaft door, a cage door control switch for controlling the opening or closing of the cage door, and a wireless button 2 for sending a cage use request signal to the PLC controller 1. The floor door control switches 3 and the wireless buttons 2 are both multiple, and each level is equipped with a floor door control switch 3 and a wireless button 2. The PLC controller 1 is electrically connected to the elevator encoder 4, the traction machine 5, the cage door control switch and the multiple floor door control switches 3 respectively. The PLC controller 1 wirelessly communicates with the multiple wireless buttons 2 through a wireless transceiver to respond to the cage use request signal of the wireless button 2 of the corresponding leveling, and controls the traction machine 5 to drive the cage to move to the corresponding leveling based on the cage use request signal of the wireless button 2 of the corresponding leveling.

[0020] The number of floors described in this embodiment is sixteen, so there are also sixteen corresponding floor door control switches 3, and each floor door control switch 3 corresponds to a door indicator light. Figure 2As shown, the PLC controller 1 is a programmable PLC controller of model 14ss2. The A signal terminal and the B signal terminal of the PLC controller 1 are connected to the corresponding signal terminals of the RF transceiver, and wireless communication is performed with the wireless button 2 through the RF transceiver. The PLC controller 1 is electrically connected to the two signal output terminals corresponding to the elevator encoder 4 through the X01 and X02 signal terminals, and is electrically connected to the two signal input terminals corresponding to the traction machine 5 through the Y36 and Y37 signal terminals. The X07 signal terminal of the PLC controller 1 is electrically connected to the floor door control switch 3 of the first floor, the X20 to X27 signal terminals of the PLC controller 1 are electrically connected to the floor door control switches 3 of the 2nd to 9th floors respectively, the X30 to X36 signal terminals of the PLC controller 1 are electrically connected to the floor door control switches 3 of the 10th to 16th floors respectively, and the X37 signal terminal of the PLC controller 1 is electrically connected to the cage door control switch.

[0021] Wherein, the elevator encoder 4 is a photoelectric encoder.

[0022] In the above embodiment, when the traction machine 5 drives the cage to move, the PLC obtains the real-time position of the elevator through the elevator encoder 4 in real time, and determines whether the elevator has reached the corresponding level based on the elevator position.

[0023] The cage of the present invention is equivalent to the elevator car of an existing elevator, and the traction machine 5 is the power equipment of the elevator. How to control the elevator car through the traction machine 5 and how the elevator encoder 4 monitors the position and movement speed of the elevator are conventional technical means in this field, and the present invention does not elaborate on their specific working principles.

[0024] The floor door control switch 3 and the cage door control switch of the utility model are both electrically connected to the PLC controller 1. In response to the control signal of the PLC controller 1, the PLC controller 1 sends a control signal to the cage door control switch and the floor door control switch 3 of the corresponding floor when the cage moves to the target floor. The cage door and the corresponding floor hoistway floor door are controlled to open through the cage door control switch and the floor door control switch 3, and the cage door and the corresponding floor hoistway floor door are controlled to close after a preset delay time.

[0025] In some embodiments, the automatic leveling control device also includes an upper limit switch, a lower limit switch and a weight detection module. The upper limit switch is installed at the upper end of the cage operating shaft, and the lower limit switch is installed at the lower end of the cage operating shaft. The weight detection module is installed on the cage for detecting the cage load. The upper limit switch, lower limit switch and weight detection module are all electrically connected to the PLC controller 1. The upper and lower limits of the cage in the vertical direction are controlled by the upper limit switch and the lower limit switch, and the cage load is detected by the weight detection module to achieve safety protection of automatic leveling control.

[0026] like Figure 2 As shown, the PLC controller 1 is electrically connected to the upper limit switch and the lower limit switch through the X05 and X06 signal terminals respectively.

[0027] In some embodiments, the automatic leveling control device also includes a human body detection module for sensing the human body. The human body detection module is arranged in the detection area. The human body detection module is electrically connected to the PLC controller 1 and is used to send a detection signal to the PLC controller 1. The PLC is used to control the emergency stop of the cage when the human body detection module senses that there is someone in the detection area.

[0028] Among them, the human body detection module can be an infrared human body sensing sensor. By setting up the human body detection module, the safety of the automatic leveling control device is increased; when there is a moving human body in the detection area, the system cannot be started. When the moving human body leaves the detection area, the system is ready after a delay of 8 seconds. Human body detection sometimes has false detections and can be resumed after waiting for a while.

[0029] In some embodiments, the automatic leveling control device further comprises an emergency stop switch for controlling the emergency stop of the cage, the emergency stop switch being electrically connected to the PLC controller 1 for sending an emergency stop signal to the PLC controller 1, and the PLC controller 1 being used to control the emergency stop of the cage based on the emergency stop signal, see Figure 2 , the PLC controller 1 is electrically connected to the emergency stop switch through the X02 signal terminal.

[0030] In the above embodiment, when an emergency occurs while the cage is running, the system stops immediately when the emergency stop button is pressed or the floor door is opened. After the problem is eliminated, all doors are closed, the warning red light goes out, and the system is ready. The PLC controller 1 controls the cage to stop through the traction machine 5.

[0031] Among them, the automatic leveling control device also includes a door indicator light and a fault alarm light, and the door indicator light and the fault alarm light are electrically connected to the PLC controller 1. When the cage runs to the corresponding leveling, the door indicator light of the corresponding leveling is controlled to light up. When a system fault occurs, the fault alarm light is controlled to light up.

[0032] See also Figure 2 The PLC controller 1 is electrically connected to the door indicator lights on floors 1-16 through Y04, Y05, Y20 to Y27, and Y30 to Y35.

[0033] In some embodiments, the automatic leveling control device further includes a first floor leveling switch 6 for detecting whether the cage has reached the first floor. The first floor leveling switch 6 is electrically connected to the PLC controller 1 to send a corresponding detection signal to the PLC controller 1 when the cage moves to the first floor. Figure 1 , the first floor leveling switch 6 is electrically connected to the X04 signal terminal of the PLC controller 1.

[0034] The PLC is also used to control the movement of the hoist cage to the first floor when the system is powered on. The hoist cage triggers the first floor leveling switch 6 to stop, and the elevator encoder 4 is cleared, completing the reset work and being ready for operation. When the hoist cage moves up and down, the elevator encoder 4 can accurately measure the position of the hoist cage. The operator presses the leveling wireless button 2, and the PLC program determines whether to ascend or descend based on the called floor and the current floor. When it reaches the called floor, it automatically stops at the leveling floor. During operation, if the safety protection signal is activated, the elevator will immediately stop and the red light will be on or flashing to alarm.

[0035] In some embodiments, the device also includes a first relay switch KA1 for controlling the upward movement of the cage, a second relay switch KA2 for controlling the downward movement of the cage, and a second relay switch KA3 for controlling the electric bell. The first relay switch KA1, the second relay switch KA2 and the second relay switch KA3 are electrically connected to the Y01, Y02 and Y03 signal terminals of the PLC controller 1 respectively.

[0036] It should be noted that the solution requested for protection in this utility model is about the selection and connection relationship of various hardware devices, and when a person skilled in the art learns about the hardware solution of this application, he can obtain the corresponding upper-level program without any objection. Therefore, the solution requested for protection in this application does not involve program improvements.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic leveling control device, comprising an elevator encoder for monitoring the position of a cage and a traction machine for driving the cage up and down, characterized in that: The device also includes a PLC controller, a floor door control switch for controlling the opening or closing of each level hoistway floor door, a cage door control switch for controlling the opening or closing of the cage door, and a wireless button for sending a cage use request signal to the PLC controller. There are multiple floor door control switches and wireless buttons, and each level is equipped with a floor door control switch and a wireless button. The PLC controller is electrically connected to the elevator encoder, traction machine, cage door control switch and multiple floor door control switches respectively. The PLC controller communicates wirelessly with the multiple wireless buttons through a wireless transceiver. Among them, the PLC controller is a programmable PLC controller with model 14ss2. The A signal terminal and B signal terminal of the PLC controller are connected to the corresponding signal terminals of the RF transceiver, and wireless communication with the wireless button is achieved through the RF transceiver. The PLC controller is electrically connected to the two signal output terminals corresponding to the elevator encoder through the X01 and X02 signal terminals, and is electrically connected to the two signal input terminals corresponding to the traction machine through the Y36 and Y37 signal terminals. The X07 signal terminal of the PLC controller is electrically connected to the floor door control switch on the first floor, the X20 to X27 signal terminals of the PLC controller are electrically connected to the floor door control switches on the 2nd to 9th floors respectively, the X30 to X36 signal terminals of the PLC controller are electrically connected to the floor door control switches on the 10th to 16th floors respectively, and the X37 signal terminal of the PLC controller is electrically connected to the cage door control switch.

2. The automatic leveling control device according to claim 1, characterized in that: The device also includes a first relay switch for controlling the upward movement of the cage, a second relay switch for controlling the downward movement of the cage, and a second relay switch for controlling the electric bell. The first relay switch, the second relay switch, and the second relay switch are electrically connected to the Y01, Y02, and Y03 signal terminals of the PLC controller, respectively.

3. The automatic leveling control device according to claim 1, characterized in that: The device also includes a human body detection module for sensing the human body. The human body detection module is arranged in the detection area. The human body detection module is electrically connected to the PLC controller and is used to send a detection signal to the PLC controller. The PLC is used to control the cage to stop urgently when the human body detection module senses that there is someone in the detection area.

4. The automatic leveling control device according to claim 1, characterized in that: The device also includes a first-floor leveling switch for detecting whether the cage has reached the first floor. The first-floor leveling switch is electrically connected to the PLC controller to send a corresponding detection signal to the PLC controller when the cage moves to the first floor.

5. The automatic leveling control device according to claim 1, characterized in that: The device also includes an emergency stop switch for controlling the emergency stop of the cage. The emergency stop switch is electrically connected to the PLC controller for sending an emergency stop signal to the PLC controller. The PLC controller is used to control the emergency stop of the cage based on the emergency stop signal.

6. The automatic leveling control device according to claim 1, characterized in that: The device also includes a door indicator light and a fault alarm light, and both the door indicator light and the fault alarm light are electrically connected to the PLC controller.

7. The automatic leveling control device according to claim 1, characterized in that: The device further comprises a leveling indicator light and a preselection indicator light, both of which are electrically connected to the PLC controller.

8. The automatic leveling control device according to claim 1, characterized in that: The device also includes an upper limit switch and a lower limit switch. The upper limit switch is installed at the upper end of the cage operating shaft, and the lower limit switch is installed at the lower end of the cage operating shaft. The upper limit switch and the lower limit switch are both electrically connected to the PLC controller.

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