Construction platform control circuit

Abstract

The utility model relates to a construction platform control circuit which is applied to a construction platform, the construction platform comprises a first motor and a second motor, the first motor is provided with a first brake device, and the second motor is provided with a second brake device; the construction platform control circuit comprises a power supply circuit, a controller module circuit and a brake device circuit. The power supply circuit is electrically connected with the controller module circuit and the brake device circuit. And the controller module circuit is used for sending a control signal for controlling the construction platform. According to the construction platform control circuit provided by the utility model, a control signal is sent to the brake device through the controller module, a circuit switch in the brake device circuit is controlled to be turned off, the brake device circuit is connected, a brake coil is electrified to drive a motor to brake, faults of a construction platform can be detected in time, and protection is triggered; and the safety of operators is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator construction platforms, in particular to a construction platform control circuit. BACKGROUND

[0002] In today's society, elevators have become an indispensable device in high-rise building construction. When installing elevators in high-rise buildings, a construction platform is needed to install the elevator. The elevator installation special construction platform is a tool specially designed for elevator installation engineering, aiming to reduce the dependence of installation workers on the construction site, reduce labor intensity, and improve the efficiency of elevator installation.

[0003] The existing construction platform for elevator installation is usually a construction platform driven by a motor. However, during the operation of the construction platform, if there is no timely feedback due to improper operation or sudden abnormalities of the machine, it is easy to cause personnel injury or machine failure, which cannot guarantee safety. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims to provide a construction platform control circuit, which can detect construction platform failures in time, realize a failure alarm function, and control the communication of the brake device circuit to realize motor brake control.

[0005] The utility model provides a construction platform control circuit, which is applied to a construction platform, wherein the construction platform comprises a first motor and a second motor, the first motor is provided with a first brake device, and the second motor is provided with a second brake device.

[0006] The construction platform control circuit comprises a power supply circuit, a controller module circuit and a brake device circuit, and the power supply circuit is electrically connected with the controller module circuit and the brake device circuit; the controller module circuit is used for sending a control signal for controlling the construction platform;

[0007] The controller module comprises a controller, a main power contactor, a first brake relay and a second brake relay which are electrically connected with the controller;

[0008] The brake device circuit comprises a main power switch, a first brake device circuit for controlling the brake of the first brake device, and a second brake device circuit for controlling the brake of the second brake device, the first brake device circuit and the second brake device circuit are connected in parallel with each other and connected in series with the main power switch;

[0009] The first brake device circuit is provided with a first brake device circuit switch, and the second brake device circuit is provided with a second brake device switch;

[0010] The main power contactor is used for controlling the main power switch to open or close, the first brake relay is used for controlling the first brake device circuit switch to open or close, and the second brake relay is used for controlling the second brake device circuit switch to open or close.

[0011] In some embodiments, the first brake device circuit comprises a first resistance and a first brake coil, the first resistance and the first brake coil are connected in parallel with each other and are connected in series with the first brake device circuit switch.

[0012] And,

[0013] The second brake device circuit comprises a second resistance and a second brake coil, the second resistance and the second brake coil are connected in parallel with each other and are connected in series with the second brake device circuit switch.

[0014] In some embodiments, the power circuit comprises a first rectifier circuit and a second rectifier circuit, the first rectifier circuit is electrically connected with the controller module circuit, and the second rectifier circuit is electrically connected with the brake device circuit.

[0015] In some embodiments, the controller module circuit further comprises an emergency stop button, a start button, an up button and a down button, the emergency stop button, the start button, the up button and the down button are respectively electrically connected with the controller; wherein the emergency stop button is used for emergency stop of the construction platform, the start button is used for starting the construction platform, and the up button and the down button are respectively used for controlling the construction platform to rise or fall.

[0016] In some embodiments, the controller module circuit further comprises an up limit switch and a down limit switch electrically connected with the controller; wherein the up limit switch and the down limit switch are used for being disconnected after detecting that the construction platform reaches a limit contact.

[0017] In some embodiments, the controller module circuit further comprises an up contactor and a down contactor electrically connected with the controller.

[0018] In some embodiments, the controller module circuit further comprises a first motor switch and a second motor switch electrically connected with the controller; wherein the first motor switch is used for controlling the first motor to open or close, and the second motor switch is used for controlling the second motor to open or close.

[0019] In some embodiments, the controller module circuit further comprises a current overload switch, which is electrically connected with the controller; wherein the current overload switch is used to disconnect when the construction platform operating current is overloaded.

[0020] In some embodiments, the controller module circuit further comprises a fault interval alarm and a current overload alarm, which are electrically connected with the controller.

[0021] In some embodiments, the controller module circuit further comprises an audible and visual alarm, which is electrically connected with the controller.

[0022] In order to better understand and implement, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 A circuit diagram of a construction platform control circuit is provided in the present application.

[0025] Figure 2 A principle diagram of a construction platform control circuit is provided in the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] In the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0028] Similarly, the use of the terms "fixed", "connected" in the specification and claims should not be understood in a limiting sense. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in a device or system, which means that there is a path between device A and device B, which can be a path including other devices or tools.

[0029] Furthermore, the description in the present application involving "first", "second" and the like is only for the purpose of description, and should not be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0030] Please refer to Figure 1 , Figure 1 The utility model provides a kind of construction platform control circuit's circuit diagram.

[0031] The utility model is applied to construction platform, the construction platform includes first motor and second motor, the first motor is equipped with first brake device, and the second motor is equipped with second brake device.

[0032] In one embodiment, the construction platform is a motor-driven construction platform, and the construction platform is equipped with a first motor and a second motor. Through the cooperation of the motor drive and the transmission system, the lifting movement of the construction platform is realized.

[0033] The construction platform control circuit of the utility model, including power supply circuit 1, controller module circuit 2 and brake device circuit 3, the power supply circuit 1 is connected with the controller module circuit 2 and the brake device circuit 3 respectively, the controller module circuit 2 is used to send the control signal for controlling the construction platform.

[0034] In one embodiment, the power supply circuit 1 includes a first rectifier circuit 11 and a second rectifier circuit 12, the first rectifier circuit 11 is connected with the controller module circuit 2, and the second rectifier circuit 12 is connected with the brake device circuit 3.

[0035] The input end of the first rectifier circuit 11 and the second rectifier circuit 12 is connected with an external AC power supply, the output end of the first rectifier circuit 11 is connected with the controller module circuit 2, and the controller module circuit 2 is provided with a DC power supply; the output end of the second rectifier circuit 12 is connected with the brake device circuit 3, and the brake device circuit 3 is provided with a 110V DC voltage.

[0036] The first rectifier circuit 11 and the second rectifier circuit 12 are connected with an external power supply, and the AC power of the external power supply is converted into DC power through the rectifier circuit to provide power supply for the controller module and the brake device.

[0037] The controller module circuit 2 comprises a controller 21, a main power contactor 22, a first brake relay 23 and a second brake relay 24 which are electrically connected with the controller 21 respectively.

[0038] The controller 21 is provided with a main board and a processor, can detect signals in the controller module circuit 2, and respond to changes in the construction platform state and user's operation to send control signals to the brake device circuit 3 to control the brake device.

[0039] The brake device circuit 3 comprises a main power switch 31, a first brake device circuit 32 for controlling the first brake device to brake and a second brake device circuit 33 for controlling the second brake device to brake, the first brake device circuit 32 and the second brake device circuit 33 are connected in parallel with each other and in series with the main power switch 31.

[0040] The first brake device circuit 32 is provided with a first brake device circuit switch 321, and the second brake device circuit 33 is provided with a second brake device switch 331.

[0041] In the embodiment, the main power contactor is used to control the main power switch to open or close, and the main power contactor controls the on-off of the motor and the motor brake device power supply, thereby ensuring the stable operation of the construction platform.

[0042] The first brake relay 23 is used to control the opening or closing of the first brake device circuit 32 switch, and the second brake relay 24 is used to control the opening or closing of the second brake device circuit 33 switch. In an embodiment, the first brake relay 23 and / or the second brake relay 24 are electrically connected with the controller 21, and the controller 21 sends a control signal to the first brake device switch 321 and / or the second brake device switch 331 to control the opening or closing of the first brake device switch 321 and / or the second brake device switch 331 according to the on-off of the first brake relay 23 and / or the second brake relay 24. When the main power switch 31 is closed, the first brake device switch 321 and / or the second brake device switch 331 are also closed, the first brake device circuit 32 and / or the second brake device circuit 33 are connected, and the first brake device and / or the second brake device stop the first motor and / or the second motor to stop the construction platform from lifting.

[0043] According to the scheme of the utility model, in an embodiment, the first brake device circuit 32 comprises a first resistor 322 and a first brake coil 323, the first resistor 322 and the first brake coil 323 are parallel to each other and are connected in series with the first brake circuit switch 321; the second brake device circuit 33 comprises a second resistor 332 and a second brake coil 333, the second resistor 332 and the second brake coil 333 are parallel to each other and are connected in series with the second brake device circuit switch 331.

[0044] In the embodiment, the first motor and the second motor rely on the first brake device and the second brake device for braking, and a motor brake coil is arranged in the brake device. When the first brake device circuit and / or the second brake device circuit is powered on, the current flows through the brake coil to generate a magnetic field and thus generate electromagnetic resistance, so as to stop the motor from moving or slow down. By adjusting the current size and direction of the brake coil, the braking force and speed of the motor can be controlled.

[0045] As an embodiment of the utility model, the controller module circuit 2 further comprises an emergency stop button 25, a start button 26, an up button 27 and a down button 28; the emergency stop button 25, the start button 26, the up button 27 and the down button 28 are electrically connected with the controller 21 respectively.

[0046] The emergency stop button 25 is used to stop the construction platform in an emergency, the start button 26 is used to start the construction platform, and the up button 27 and the down button 28 are used to control the construction platform to rise or fall respectively.

[0047] The controller module circuit is externally connected with an operation handle, and the operation handle is provided with operation buttons for the operator. The operator presses the start button to control the construction platform to start. The operator presses the up button or the down button to control the construction platform to ascend or descend. In an embodiment, the operator presses the emergency stop button, the controller detects the emergency stop interrupt signal, controls the brake device to brake and stops the construction platform, and ensures the safety of the operator.

[0048] In an embodiment, the operator starts the construction platform, and the controller module detects the inching signal input by the operator. The inching signal is generated by pressing the up button and / or the down button. If no inching signal is detected for 30 minutes, the construction platform is shut down and hibernates.

[0049] In an embodiment, the maximum time for continuous triggering of the inching signal is 2 minutes. The inching signal is triggered by long pressing the up button and / or the down button. If the up and down buttons are pressed for more than the maximum time, the brake device is controlled to brake.

[0050] The controller module circuit 21 further comprises an up limit switch 41 and a down limit switch 42 electrically connected with the controller. The up limit switch 41 and the down limit switch 42 are used to detect the disconnection when the construction platform reaches the limit contact. The up limit switch 41 and the down limit switch 42 are used to limit the movement range of the construction platform, monitor whether the construction platform reaches the limit position, avoid the construction platform from exceeding the range and causing failure, and reduce the risk of personnel operation. In an embodiment, when the construction platform reaches the limit position, the controller 21 detects the feedback point offset of the limit position, controls the brake device to operate and stops the motor, issues a failure alarm, and the alarm can be cleared after the construction platform is reset.

[0051] In an embodiment, the controller module circuit 2 further comprises an up contactor 43 and a down contactor 44 electrically connected with the controller 21. If the controller 21 detects that the contactor malfunctions or the contactor is stuck, a failure alarm is issued, the brake device is controlled to be locked, and the alarm can be cleared after the construction platform is reset.

[0052] The controller module circuit 2 further comprises a first motor switch 45 and a second motor switch 46 electrically connected with the controller 21, the first motor switch 45 is used for controlling the first motor to open or close, and the second motor switch 46 is used for controlling the second motor to open or close. The controller 21 can independently control the opening and closing of the first motor and / or the second motor, for example, in the normal operation process, the first motor and the second motor are synchronously operated; when the first motor and the second motor are out of synchronization, one of the motors is closed, that is, a single motor is used to drive the construction platform to operate.

[0053] The controller module circuit 2 further comprises a current overload switch 47 electrically connected with the controller 32. The current overload switch 47 is used for detecting the current overload of the construction platform and being disconnected.

[0054] In an embodiment, the current overload switch 47 is a normally closed switch, when the current overload of the construction platform is detected (for example, the value of 1.5 times of the rated current of the motor is set as the overcurrent value), the current overload switch 47 is opened, the controller 21 detects the current overload signal and sends a fault alarm, and controls the brake device to brake, and the alarm is released after the construction platform is reset.

[0055] Correspondingly, the controller module circuit 2 further comprises a current overload alarm 48, when the current overload is detected, the current overload alarm 48 is controlled to send an alarm prompt.

[0056] The controller module circuit 2 further comprises a fault interval alarm 49 electrically connected with the controller 21. When the fault of the construction platform is detected, the fault interval alarm 49 is controlled to send a fault alarm prompt.

[0057] In an embodiment, the controller module circuit 2 further comprises an audible and visual alarm 50 electrically connected with the controller 21. In an embodiment, the audible and visual alarm 50 is used for sending an audible and visual alarm prompt according to the operation state of the construction platform.

[0058] The construction platform control circuit provided by the utility model is provided with two motors capable of simultaneously operating and independently operating, each motor is equipped with a brake device, a controller module circuit is formed by a controller, the controller module can detect the control signal of the construction platform and the signal of abnormal operation of the construction platform, and sends a control signal of the brake device circuit according to the detected signal, so as to control the brake device to brake. The utility model can detect the fault signal of the construction platform in time, sends a fault alarm to personnel, and controls the motor to brake in time, so as to ensure the safety of the operator.

[0059] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model.

Claims

1. A control circuit for a construction platform, applied to a construction platform, characterized in that: The construction platform includes a first motor and a second motor. The first motor is equipped with a first braking device, and the second motor is equipped with a second braking device. The construction platform control circuit includes a power supply circuit, a controller module circuit, and a braking device circuit. The power supply circuit is electrically connected to both the controller module circuit and the braking device circuit. The controller module circuit is used to send control signals to control the construction platform. The controller module includes a controller and a main power contactor, a first brake relay and a second brake relay, which are electrically connected to the controller respectively. The braking device circuit includes a main power switch, a first braking device circuit for controlling the first braking device to brake, and a second braking device circuit for controlling the second braking device to brake. The first braking device circuit and the second braking device circuit are connected in parallel and in series with the main power switch. The first braking device circuit is equipped with a first braking device circuit switch, and the second braking device circuit is equipped with a second braking device switch. The main power contactor is used to control the main power switch to be turned on or off, the first brake relay is used to control the first brake device circuit switch to be turned on or off, and the second brake relay is used to control the second brake device circuit switch to be turned on or off.

2. The construction platform control circuit according to claim 1, characterized in that, The first braking device circuit includes a first resistor and a first brake coil, the first resistor and the first brake coil are connected in parallel and in series with the first braking device circuit switch; as well as, The second braking device circuit includes a second resistor and a second brake coil, which are connected in parallel and in series with the second braking device circuit switch.

3. The construction platform control circuit according to claim 1, characterized in that, The power supply circuit includes a first rectifier circuit and a second rectifier circuit. The first rectifier circuit is electrically connected to the controller module circuit, and the second rectifier circuit is electrically connected to the braking device circuit.

4. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes an emergency stop button, a start button, an up button, and a down button; the emergency stop button, the start button, the up button, and the down button are electrically connected to the controller; wherein, the emergency stop button is used to brake the construction platform to an emergency stop, the start button is used to start the construction platform, and the up button and the down button control the construction platform to rise or fall, respectively.

5. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes an upward limit switch and a downward limit switch electrically connected to the controller; wherein, the upward limit switch and the downward limit switch are used to disconnect after detecting that the construction platform has reached the limit contact.

6. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes an up-line contactor and a down-line contactor, which are electrically connected to the controller.

7. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes a first motor switch and a second motor switch electrically connected to the controller; wherein the first motor switch is used to control the first motor to turn on or off, and the second motor switch is used to control the second motor to turn on or off.

8. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes a current overload switch, which is electrically connected to the controller; wherein, the current overload switch is used to disconnect after detecting an overload of the operating current of the construction platform.

9. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes a fault interval alarm and a current overload alarm, which are electrically connected to the controller.

10. The construction platform control circuit according to claim 1, characterized in that, The controller module circuit also includes an audible and visual alarm, which is electrically connected to the controller.

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