CN107416636B

CN107416636B - Elevator car unexpected movement and up overspeed protection control panel

Info

Publication number: CN107416636B
Application number: CN201710718957.3A
Authority: CN
Inventors: 王小龙; 王治刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-21
Filing date: 2017-08-21
Publication date: 2023-01-03
Anticipated expiration: 2037-08-21
Also published as: CN107416636A

Abstract

An elevator car accidental movement and uplink overspeed protection control board comprises an input port and an output port, wherein the input port comprises an upper door area signal port X1, a lower door area signal port X2, a door lock signal port X5, a door lock and safety loop power supply common port X6, a door lock and safety loop power supply port X8 and a safety loop port X9; the output port comprises an upper electromagnet control end Y1, an electromagnet loop control end Y2, a lower electromagnet control end Y3 and position switch control ends Y4 and Y5. When detecting elevator car and taking place unexpected removal, upper door district signal port X1 or lower door district signal port X2 lose the electricity, lock signal port X5 loses the electricity, removes under the state of opening the door promptly, and the control panel can control the electro-magnet that corresponds and get the electricity, and the electro-magnet gets the electricity after, and the rope gripper presss from both sides elevator wire rope tight, and elevator car stops to remove. The invention has simple structure, low cost and stable and reliable operation, is suitable for 80-240v of input voltage detected by a door lock and a safety loop, and can be matched with more than 90 percent of elevators.

Description

Elevator car unexpected movement and up overspeed protection control panel

Technical Field

The invention relates to the field of elevators, in particular to an elevator car accidental movement and uplink overspeed protection control board.

Background

In recent years, the frequent frequency of safety accidents of elevators is reported, so that people pay more attention to the safety of the elevators, and the state correspondingly issues a ' GB7588-2003 No. 1 amendment sheet ', which defines that the movement of a car leaving a landing without instructions in an unlocking area and in an open door state ' is accidental movement, and all newly-shipped elevators have an accidental movement prevention function.

Accidental movement of an elevator car is generally caused by two main reasons: one is insufficient brake torque, and the other is insufficient friction force between the traction sheave and the steel wire rope. Accordingly, in order to prevent or stop the movement of the car, the car may be directly stopped by installing a "device" thereon or indirectly stopped by clamping the hoisting wire rope. Thus, it is highly desirable to develop an elevator car unexpected movement and up overspeed protection control panel that controls a bidirectional rope clamp to prevent abnormal movement and up overspeed of an elevator car.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an accidental movement and upward overspeed protection control panel of an elevator car, which has a simple structure and low cost, and is used for controlling a bidirectional rope clamp to prevent the elevator car from abnormally moving and upward overspeed.

In order to achieve the above purpose, the control panel for accidental movement and uplink overspeed protection of the elevator car provided by the invention comprises a plurality of input ports and output ports, and is characterized in that the input ports comprise an upper door zone signal port X1, a lower door zone signal port X2, a door lock signal port X5, a door lock and safety loop power supply common port X6, a door lock and safety loop power supply port X8 and a safety loop port X9;

the upper door area signal port X1 is connected with an upper door area interface of the elevator main control panel, the lower door area signal port X2 is connected with a lower door area interface of the elevator main control panel, the door lock signal port X5 is connected with a car door lock of the elevator main control panel, the door lock and safety loop power supply common port X6 is connected with a common end interface of a door lock loop power supply of the elevator main control panel, the door lock and safety loop power supply port X8 is connected with the other end of the door lock and safety loop power supply interface of the elevator main control panel in parallel, and the safety loop port X9 is connected with an elevator safety loop of the elevator main control panel;

the output port comprises an upper electromagnet control end Y1, an electromagnet loop control end Y2, a lower electromagnet control end Y3, and position switch control ends Y4 and Y5;

the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are respectively connected with two ends of an upper electromagnet of the rope clamping device; the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are respectively connected with two ends of a lower electromagnet of the rope clamping device; and the position switch control ends Y4 and Y5 are respectively connected with one end of an upper position switch and one end of a lower position switch of the rope clamping device.

Further, when the signal port X1 of the upper door area is powered off and the signal port X5 of the door lock is powered off, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the port X9 of the safety loop is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps the steel wire rope e of the elevator, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run.

Furthermore, when the signal port X2 of the lower door area is powered off and the signal port X5 of the door lock is powered off, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the lower electromagnet of the rope clamp is started, the rope clamp clamps the steel wire rope e of the elevator, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run.

Furthermore, the input port further comprises a maintenance port X4, an up-moving button and a down-moving button, and the maintenance port X4 is connected with a maintenance interface of the elevator main control panel; when the maintenance port X4 is powered off and the upper moving button is switched on, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps an elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run; when the maintenance port X4 is powered off and the lower moving button is switched on, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the lower electromagnet of the rope clamping device is started, the rope clamping device clamps an elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run.

Furthermore, the input port further comprises an overspeed protection port X7, and the overspeed protection port X7 is connected with a speed limit switch of the elevator main control panel; when the overspeed protection port X7 is in power failure, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps the elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is disconnected, and the elevator is forbidden to run.

Further, the input port further comprises a middle door zone port X3, and the middle door zone port X3 is connected with a middle door zone interface of the elevator main control board.

Furthermore, the input voltages of the door lock signal port X5, the door lock and safety loop power supply common port X6, the overspeed protection port X7 and the door lock and safety loop power supply port X8 are suitable for 80 v-240 v, and a direct current voltage of 1.05 v-1.3 v is output through a voltage stabilizing circuit consisting of a rectifier bridge, a capacitor and a resistor and used for driving the optical coupler.

The technical scheme provided by the invention has the beneficial effects that:

1. when detecting that elevator car takes place unexpected the removal, upper side door district signal port X1 or lower side door district signal port X2 lose the electricity, door lock signal port X5 loses the electricity, upwards or move down under the state of opening the door promptly, and the control panel can control the electro-magnet that corresponds and get electricity, and after the electro-magnet got electricity, the rope holder pressed from both sides elevator wire rope tight, and elevator car stops moving.

2. When the elevator car is detected to move accidentally, the rope clamp clamps the steel wire rope of the elevator and simultaneously disconnects the safety loop of the elevator, and the elevator is forbidden to run.

3. The maintenance port is used as an accident prevention detection circuit, so that the rope clamping device is prevented from acting during maintenance of the elevator. At the moment, an up-moving button or a down-moving button on the control panel can be pressed to control the upper electromagnet or the lower electromagnet so as to debug the bidirectional rope gripper.

4. When an overspeed signal is acquired through the overspeed protection port and the elevator is not in a down state, the relay (J2) in the up direction acts to switch on the electromagnet power supply corresponding to the rope clamp and the electromagnet attracts to trigger the rope clamp to act.

5. The detection precision is improved through the middle door zone port.

6. The input voltage detected by the door lock and the safety loop is suitable for 80-240v and can be matched with more than 90 percent of elevators; simple structure, low cost and stable and reliable operation.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a circuit diagram of the present invention.

FIG. 3 is a schematic structural view of the rope clamp;

FIG. 4 is a schematic view of the structure of FIG. 1 with the fixing base removed;

FIG. 5 is a schematic cross-sectional view of FIG. 2;

FIG. 6 is a schematic view of the fixing base;

FIG. 7 is a schematic structural view of the rope clamp in use when the rope clamp is installed obliquely;

FIG. 8 is a structural schematic diagram of the rope clamp in a use state when the rope clamp is vertically installed;

fig. 9 is a structural schematic diagram of the using state of the rope clamp when the rope clamp is horizontally installed.

In the figure, a left fixed plate 1, a left bracket 2, a left sliding friction plate 3, a left slide block 3a, a left friction plate 3b, a left sliding hook plate 4, a left hook plate 4a, a left tension spring 5, a left electric movable hook 6, a left movable hook mounting seat 6a, a left movable hook 6b, a left electromagnet mounting seat 6c, a left electromagnet 6d, a left T-shaped rod 6e, a left compression spring 6f, a left position switch 7, a left switch plug 8, a right fixed plate 9, a right bracket 10, a right sliding friction plate 11, a right slide block 11a, a right friction plate 11b, a right sliding hook plate 12, a right hook plate 12a, a right tension spring 13 and a right electric movable hook 14, the adjustable-position type elevator car elevator door lock comprises a right movable hook mounting seat 14a, a right movable hook 14b, a right electromagnet mounting seat 14c, a right electromagnet 14d, a right T-shaped rod 14e, a right compression spring 14f, a right position switch 15, a right switch plug 16, a left switch seat 17, a left needle inserting seat 18, a right switch seat 19, a right needle inserting seat 20, a mounting plate 21, an adjusting mounting hole 21a, a first fixed mounting hole 21b, a fixing seat 22, an arc-shaped waist-shaped hole 22a, a second fixed mounting hole 22b, an adjusting gasket 23, a left limiting frame 24, a right limiting frame 25, a bearing beam or a traction machine seat a, a traction wheel b, a guide wheel c, a diversion wheel d and a steel wire rope e.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the control panel for the accidental movement and the upward overspeed protection of an elevator car provided by the present invention comprises a plurality of input ports and output ports.

The input port comprises a power input end, an upper door zone signal port X1, a lower door zone signal port X2, a middle door zone port X3, an inspection port X4, an up-moving button, a down-moving button, a door lock signal port X5, a door lock and safety loop power supply common port X6, an overspeed protection port X7, a door lock and safety loop power supply port X8 and a safety loop port X9.

And the upper door area signal port X1 is connected with an upper door area interface of the elevator main control panel. The door lock signal port X5 is connected with a car door lock of the elevator main control panel, the door lock and safety loop power supply common port X6 is connected with a common end interface of a door lock loop power supply of the elevator main control panel, the door lock and safety loop power supply port X8 is connected with the other end of the door lock and safety loop power supply interface of the elevator main control panel in parallel, and the safety loop port X9 is connected with an elevator safety loop of the elevator main control panel. When the signal port X1 of the upper door area is powered off and the signal port X5 of the door lock is powered off, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, and the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps the steel wire rope e of the elevator, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run.

And the lower door zone signal port X2 is connected with a lower door zone interface of the elevator main control panel. When the signal port X2 of the lower door area is powered off and the signal port X5 of the door lock is powered off, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the lower electromagnet of the rope clamping device is started, the rope clamping device clamps the steel wire rope e of the elevator, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run.

The middle door area port X3 is connected with a middle door area interface of the elevator main control panel so as to improve the detection precision.

And the maintenance port X4 is connected with a maintenance interface of the elevator main control panel. When the maintenance port X4 is powered off and the upper moving button is switched on, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps an elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run; when the maintenance port X4 is powered off and the down-moving button is switched on, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the lower electromagnet of the rope clamping device is started, the rope clamping device clamps the elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run.

The overspeed protection port X7 is connected with a speed limit switch of an elevator main control panel; when the overspeed protection port X7 is powered off, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps the elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is disconnected, and the elevator is forbidden to run.

The input voltages of a door lock signal port X5, a door lock and safety loop power supply common port X6, an overspeed protection port X7 and a door lock and safety loop power supply port X8 are suitable for 80 v-240 v, and a direct current voltage of 1.05 v-1.3 v is output through a voltage stabilizing circuit consisting of a rectifier bridge, a capacitor and a resistor and used for driving an optical coupler.

The output port comprises an upper electromagnet control end Y1, an electromagnet loop control end Y2, a lower electromagnet control end Y3, and position switch control ends Y4 and Y5.

The power input end comprises a 24+ port and a 24-port which are respectively connected with a 24V power supply of a main control panel of the elevator. If the overspeed switch of the safety gear is connected in series in a safety loop, an overspeed protection port X7 is connected to a position close to a power supply end (the foremost end), and unless the overspeed switch is disconnected (operated), the output end of the switch and the other end of the power supply always have voltage; and serially connecting the overspeed protection port X7 and the safety circuit port X9 to the output end of the speed-limiting overspeed switch of the safety circuit. The connecting cable (5 x 0.75) is inserted to the anti-accidental movement control panel and the bidirectional rope gripper respectively. When the action direction of the anti-accident mobile control panel is not consistent with the action direction of the bidirectional rope clamping device, the plug on the rope clamping device is exchanged.

The circuit structure of the invention is shown in fig. 2, and the working principle is as follows:

1. car movement protection

1.1 the movement detection precision is high (the switch K1-1 is in an off state),

an upper door zone signal port X1 and a lower door zone signal port X2 on the control panel are switched on, the optocouplers GJ1 and GJ2 are switched on, the switches K2-1 and K2-3 are switched off, the switches K2-2 and K2-4 are switched on, and the elevator car is at the leveling position.

The door lock signal port X5 loses power, the upper door area switch of the elevator leaves the door opening area, and the elevator car is in an upward moving state under the door opening state. At the moment, the port X1 of the upper door area is powered off, the optocoupler GJ1 is powered off, and the +24V enables the optocoupler GJ6 to be conducted through the

ports

7 and 8 of the GJ1, the port K2-2 and the resistor R10. +24V makes the optical couple GJ8 conducted through 8 and 7 ports of the optical coupler GJ9 (node G), 8 and 7 ports of the optical coupler GJ6 and resistance, and simultaneously makes the relay J2 conducted through the node G, 7 and 8 ports of the optical coupler GJ3, the diode d6, 5 and 6 ports of the optical coupler GJ8 (node E) and 5 and 6 ports of the optical coupler GJ3, and simultaneously makes the 5 and 6 ports of the optical couple GJ5 conducted through the node E to the diode d2 and resistance, so that the relay J4 is conducted, and the

relay J4 contacts

6 and 7 disconnection relay J3 are delayed after discharging through the capacitor c 1; and the +24V leads the upper electromagnet to be electrified and attracted to trigger the corresponding sliding hook plate-1 or the sliding hook plate-2 on the rope clamp to unhook and the rope clamp to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J2. Because the relay J3 is switched off in a delayed mode, the upper electromagnet is released after power failure; when the sliding hook plate moves unhooking, the position switch 1 or the position switch 2 is simultaneously switched off, thereby disconnecting the elevator safety circuit and forbidding the elevator to run. The position switch 1 or the position switch 2 corresponds to the left position switch 7 or the right position switch 15 of the rope clamp and is correspondingly arranged according to different installation modes of the rope clamp. For example, if the right side of the rope clamp is set as the accidental upward control of the elevator, the position switch 1 corresponds to the right position switch 15, and the position switch 2 corresponds to the left position switch 7, or vice versa. The position switch 1 or the position switch 2 is the same as described below. The sliding hook plate-1 or the sliding hook plate-2 corresponds to the right sliding hook plate 12 or the left sliding hook plate 4 in the same manner as described above.

When the elevator car is in the flat floor position and the door lock signal port X5 is in power loss, the elevator car is in a downward moving state under the door opening state. The lower door zone switch leaves a lower door zone port X2 of a door zone plate and is powered off, a light couple GJ2 is conducted, 24V enables the light couple GJ7 to be conducted through 7 and 8 ports of an optical coupler GJ2, a switch K2-4 and a resistor R12, 24V enables the light couple GJ9 to be conducted through 8 and 7 ports of the optical coupler GJ8, 7 and 8 ports of the optical coupler GJ7 and a resistor, 24V enables a relay J5 to be conducted through 7 and 8 ports of the optical coupler GJ3, a diode d7, 5 and 6 ports (a node F) of the optical coupler GJ9, meanwhile, the light couple GJ5 is conducted through the node F to the diode d3 and the resistor, the relay J4 is conducted, and the relay J4 is disconnected from

contacts

6 and 7, and the relay J3 is discharged through a capacitor c1 and then is delayed; and the +24V leads the lower electromagnet to be electrified to attract and trigger the sliding hook plate-2 or the sliding hook plate-1 corresponding to the rope clamping device to unhook and the rope clamping device to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J5. The lower electromagnet is open due to the delayed disconnection of J3; when the sliding hook plate moves unhooking, the position switch 2 or the position switch 1 is simultaneously switched off, thereby disconnecting the elevator safety loop and forbidding the elevator to run.

1.2 the mobile detection precision is low (switch K1-1 is in closed state)

The elevator door zone switch does not act at the door zone position, the light couples GJ1 and GJ2 are conducted, the switches K2-1 and K2-3 are pulled out to be in a conducting state, and the switches K2-2 and K2-4 are pulled out to be in a disconnecting state.

When the elevator car moves upwards at a flat floor position in a door opening state, an upper door area switch leaves an upper door area port X1 of a door area plate to be electrified and a light couple GJ1 is conducted, +24V enables the light couple GJ8 to be conducted through 5 and 6 ports of an optical coupler GJ1, a switch K2-1 and a resistor, +24V enables the light couple GJ2 to be conducted through 8 and 7 ports of an optical coupler GJ9 and 8 and 7 ports of the optical coupler GJ6 and the resistor, after the elevator car moves continuously, a lower door area switch leaves a lower door area port X2 of the door area plate to be electrified and the light couple GJ2 to be conducted, +24V enables the light couple GJ7 to be conducted through 5 and 6 ports of the optical coupler GJ2, a switch K2-3 and the resistor, and +24V enables the relay J2 to be conducted through 5 and 6 ports of the optical coupler GJ7, 5 and 6 ports (a node E) of the optical coupler GJ8 and 5 and 6 ports of the optical coupler GJ3, a relay J2 to be conducted, a relay J4 is conducted, and a relay J4 is disconnected after the elevator car moves to a relay and a relay is discharged; and the +24V leads the upper electromagnet to be electrified and attracted to trigger the corresponding sliding hook plate-1 or the sliding hook plate-2 on the rope clamp to unhook and the rope clamp to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J2. The electromagnet is not discharged due to the delayed disconnection of J3; when the sliding hook plate moves unhooking, the position switch 1 or the position switch 2 is simultaneously switched off, thereby disconnecting the elevator safety circuit and forbidding the elevator to run.

When the elevator car moves downwards at the flat floor position in the door opening state, the switch in the lower door area leaves the door area plate X2 to be electrified, the light couple GJ2 is conducted, the +24V conducts the light couple GJ7 through the ports 5 and 6 of the optocoupler GJ2, the port 6 of the optocoupler K2, the switch K2-3 and the resistor, the +24V conducts the light couple GJ9 through the ports 5 and 6 of the optocoupler GJ4, the ports 7 and 8 of the optocoupler GJ5, the ports 5 and 6 of the optocoupler GJ11 (node A), the ports 8 and 7 of the optocoupler GJ8, the ports 7 and 8 of the optocoupler GJ7 and the resistor, after the upper door area switch is moved continuously, the upper door area switch leaves the door area board X1 and is electrified, the optical couple GJ1 is conducted, the +24V enables the optical couple GJ6 to be conducted through ports 5 and 6 of the optical coupler GJ1, a switch K2-1 and a resistor R9, the +24V enables the relay J5 to be conducted through ports 5 and 6 of the GJ6 and ports 5 and 6 of the GJ9 (a node F), meanwhile, the optical couple GJ5 (ports 5 and 6) are conducted through the F to d3 and the resistor, the relay J4 is conducted, and the relay J4 is disconnected through contacts 6 and 7, the relay J3 is delayed after being discharged through a capacitor c 1; and the +24V leads the lower electromagnet to be electrified to attract and trigger the sliding hook plate-2 or the sliding hook plate-1 corresponding to the rope clamping device to unhook and the rope clamping device to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J5. Because the relay J3 is switched off in a delayed mode, the electromagnet is not discharged; when the sliding hook plate moves unhooking, the position switch 2 or the position switch 1 is simultaneously switched off, so that the elevator safety loop is disconnected, and the elevator is forbidden to run.

2. Elevator up-going overspeed protection:

when the elevator does not exceed the speed limit, a door lock and a public port X6 of a safety loop power supply and an overspeed protection port X7 have direct current or alternating current of 80-240V, the voltage is converted into direct current of 1.05-1.3V through a rectifier bridge, a resistor and a capacitor, 3 and 4 of a driving optocoupler GJ11 are switched on, and 5 and 6 and 7 and 8 are switched off: when the elevator is overspeed, the speed limiter acts, the overspeed switch is switched off, the control panel X7 is in power failure, the GJ11 is in power failure, and +24V is conducted through a node G, 7 and 8 (nodes E) of the optocoupler GJ11 and 5 and 6 of the optocoupler GJ3, so that the relay J2 is conducted, and simultaneously 5 and 6 of the optocoupler GJ5 are conducted through a node E to a diode d2 and a resistor, so that the relay J4 is conducted, and the relay J4 contacts 6 and 7 are switched off, and the relay J3 is discharged through a capacitor c1 and then is conducted in a delayed manner; +24V leads the upper electromagnet to be electrified to attract and trigger the corresponding sliding hook plate-1 or the sliding hook plate-2 on the rope clamping device to unhook and the rope clamping device to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J2. The electromagnet is not discharged due to the delayed disconnection of J3; when the sliding hook plate moves unhooking, the position switch 1 or the position switch 2 is simultaneously switched off, so that the elevator safety loop is disconnected, and the elevator is forbidden to run.

3. Maintenance state:

the elevator is overhauld port X4 when form and loses the electricity, and the normal detection circuitry of unexpected removal control panel is prevented in 5, 6 disconnection of opto-coupler GJ4, presss from both sides rope ware action when avoiding the elevator to overhaul, and 7, 8 of opto-coupler GJ4 are closed this moment:

when an up-moving button on the control panel is pressed, the relay J2 is switched on by +24V through 7 and 8 ports (node B) of the optocoupler GJ4, an up-moving contact (node C) of G, the diode d4 and 5 and 6 of the optocoupler GJ3, the relay J4 is switched on through the diode d10, and the relay J3 is switched off by the

contacts

6 and 7 of the relay J4 after being discharged through the capacitor C1 and then is switched off in a delayed manner; and the +24V leads the upper electromagnet to be electrified and attracted to trigger the corresponding sliding hook plate-1 or the sliding hook plate-2 on the rope clamp to unhook and the rope clamp to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J2. The electromagnet is not discharged due to the delayed disconnection of J3; when the sliding hook plate moves unhooking, the position switch 1 or the position switch 2 is simultaneously switched off, thereby disconnecting the elevator safety circuit and forbidding the elevator to run.

When a down-moving button on a control panel is pressed, the relay J5 is switched on by +24V through 7 and 8 disconnecting of an optocoupler GJ4 (node B), a G down-moving contact (node D) and a diode D8, and the relay J4 is switched on through a diode D11 at the same time, and a contact 6 and a contact 7 of the relay J4 are switched off, and the relay J3 is switched off after being discharged through a capacitor c1 and then is delayed; +24V makes the lower electromagnet powered to attract and trigger the corresponding sliding hook plate-2 or sliding hook plate-1 of the rope gripper to unhook and the rope gripper to act through 3, 6, 4 and 5 of the relay J3 and 3, 4 of the relay J5. Because J3 is disconnected in a delayed way, the electromagnet is not released; when the sliding hook plate moves unhooking, the position switch 2 or the position switch 1 is simultaneously switched off, so that the elevator safety loop is disconnected, and the elevator is forbidden to run.

When a short-position switch button on the control panel is pressed, the relay J1 is conducted by +24V through a port (node B) 7 and a port 8 of the optocoupler GJ4 and a contact of the short-position switch button, and the

contacts

3, 4, 5 and 6 of the relay J1 short-circuit the position switch, so that the slow-starting vehicle is reset after the rope clamping device acts.

The structure of the rope clamping device is shown in fig. 3-9, the rope clamping device comprises a left fixing plate 1 which is obliquely arranged and two left supports 2 which are clamped at two sides of the left fixing plate 1, a left sliding friction plate 3 is slidably mounted on one surface of the left fixing plate 1, a left sliding hook plate 4 is slidably mounted on the other surface of the left fixing plate 1, the left sliding hook plate 4 is connected with the left sliding friction plate 3, a left tension spring 5 is hung at the upper end of the left sliding hook plate 4, the lower end of the left tension spring 5 is hung on the left support 2, a left electric movable hook 6 which can be hung with the left sliding hook plate 4 is arranged on the left support 2 corresponding to the left sliding hook plate 4, a left position switch 7 is arranged at the upper end of the left fixing plate 1, a left switch plug 8 which is matched with the left position switch 7 is arranged on the left sliding friction plate 3 corresponding to the left position switch 7, the left sliding hook plate 4 and the left electric movable hook 6 are in a hanging state at an initial position, the left tension spring 5 is in a stretching state, and the left switch plug 8 is in a connection state; a right fixing plate 9 and two right brackets 10 clamped at two sides of the right fixing plate 9, wherein a right sliding friction plate 11 is arranged on one surface of the right fixing plate 9 in a sliding manner, a right sliding hook plate 12 is arranged on the other surface of the right fixing plate 9 in a sliding manner, the right sliding hook plate 12 is connected with the right sliding friction plate 11, a right tension spring 13 is hung at the lower end of the right sliding hook plate 12, the upper end of the right tension spring 13 is hung on the right bracket 10, a right electric movable hook 14 capable of being hung with the right sliding hook plate 12 is arranged at the position, corresponding to the right sliding hook plate 12, on the right bracket 10, a right position switch 15 is arranged at the lower end of the right fixing plate 9, a right switch plug 16 matched with the right position switch 15 is arranged at the position, corresponding to the right position switch 15, on the right sliding friction plate 11, the right sliding hook plate 12 and the right electric movable hook 14 are in a hanging state, the right tension spring 13 is in a stretching state, and the right position switch 15 and the right switch plug 16 are in a connection state; one side of the left bracket 2 is connected with one side of the corresponding right bracket 10, and the friction surface of the left sliding friction plate 3 and the friction surface of the right sliding friction plate 11 are arranged in parallel at intervals.

Due to various installation modes of the rope clamp, for example, a schematic structural diagram of a use state when the rope clamp is installed obliquely as shown in fig. 7; the structure of the using state of the rope clamping device shown in the figure 8 when the rope clamping device is vertically installed is schematic; fig. 9 is a schematic structural view of a state of use when the rope clamp is horizontally installed. For convenience of description, the structure of the rope clamp adopts a right side and a left side to distinguish components of the rope clamp protection device when the elevator car moves upwards accidentally and moves downwards accidentally, namely a right position switch 15 which is an upper position switch and a left position switch 7 which is a lower position switch. The right electromagnet corresponds to the upper electromagnet, and the left electromagnet corresponds to the lower electromagnet; the sliding hook plate-1 and the sliding hook plate-2 respectively correspond to the right sliding hook plate 12 and the left sliding hook plate 4; the left and the right can be exchanged and arranged, and corresponding adjustment can be carried out according to actual conditions.

When the elevator safety loop is used, a switch plug and a position switch are respectively connected into the elevator safety loop, an elevator steel wire rope e is positioned between the friction surface of the left sliding friction plate 3 and the friction surface of the right sliding friction plate 11, when the elevator car is detected to move accidentally, the control system can control the corresponding electric movable hook to move, so that the corresponding sliding hook plate is unhooked, the sliding hook plate can slide along the fixed plate under the action of the tension spring, the corresponding sliding friction plate is driven to slide along the fixed plate, and the fixed plate is obliquely arranged, so that the distance between the friction surface of the left sliding friction plate 3 and the friction surface of the right sliding friction plate 11 is gradually reduced until the friction surface of the left sliding friction plate 3 and the friction surface of the right sliding friction plate 11 clamp the elevator steel wire rope e, the elevator car stops moving, and meanwhile, the switch plug is separated from the position switch under the driving of the sliding friction plate, the elevator safety loop is disconnected, and the elevator is forbidden to run; moreover, the device is of a transverse splicing structure, so that the device can be better suitable for the transformation of old elevators.

The left sliding friction plate 3 comprises a left sliding block 3a and a left friction plate 3b, the left sliding block 3a is of an inclined wedge structure, an inclined surface of the left sliding block 3a is slidably mounted on the left fixing plate 1, one side surface, opposite to the inclined surface, of the left sliding block 3a is a vertical surface, the left friction plate 3b is mounted on the vertical surface of the left sliding block 3a, a friction surface of the left friction plate 3b is vertically arranged, and the left sliding block 3a is connected with the left sliding hook plate 4.

The right sliding friction plate 11 comprises a right sliding block 11a and a right friction plate 11b, the right sliding block 11a is of a slanting wedge structure, the slanting surface of the right sliding block 11a is slidably mounted on the right fixing plate 9, one side surface of the right sliding block 11a, which faces away from the slanting surface, is a vertical surface, the right friction plate 11b is mounted on the vertical surface of the right sliding block 11a, the friction surface of the right friction plate 11b is vertically arranged, the friction surface of the right friction plate 11b and the friction surface of the left friction plate 3b are relatively arranged at an interval, and the right sliding block 11a is connected with the right sliding hook plate 12.

The left sliding hook plate 4 is provided with a left hook plate 4a which tilts outwards at the lower end, the left electric movable hook 6 comprises a left movable hook mounting seat 6a, a left movable hook 6b, a left electromagnet mounting seat 6c, a left electromagnet 6d, a left T-shaped rod 6e and a left compression spring 6f, the left movable hook mounting seat 6a is mounted on the left support 2 at a position corresponding to the left hook plate 4a, one end of the left movable hook 6b is movably mounted on the left movable hook mounting seat 6a, the middle part of the left movable hook 6b is a hook capable of being hooked with the left hook plate 4a, the other end of the left movable hook 6b is movably connected with the vertical rod end of the left T-shaped rod 6e, the left T-shaped rod 6e is movably inserted on the left electromagnet mounting seat 6c, the left compression spring 6f is sleeved on the left T-shaped rod 6e, one end of the left compression spring 6f is connected with the vertical rod end of the left T-shaped rod 6e, the other end of the left electromagnet mounting seat 6f is abutted against the left electromagnet mounting seat 6c, the left electromagnet mounting seat 6c is mounted on the left support 2, the left movable hook 6d is mounted on the left electromagnet 6e, the left movable hook mounting seat 6e, when the left movable hook 6b is in an initial state, the left movable hook plate is in an initial state, the left electromagnet, the left movable hook mounting seat 6a state, the left movable hook mounting seat 6b is electrified, the left movable hook 6b, the left movable hook mounting seat, the left movable hook 6e, the left electromagnet, the left movable hook 6b is in an initial state; the left movable hook mounting seat 6a is connected with the left electromagnet mounting seat 6 c.

When the elevator car is detected to move accidentally, the control system can control the corresponding electromagnet to be electrified, and the electromagnet can suck the T-shaped rod after being electrified, so that the movable hook is driven to act, the movable hook is separated from the corresponding hook plate, and the unhooking of the sliding hook plate is realized, and the elevator car is simple in structure, low in cost and stable and reliable in operation; simultaneously, through linking to each other left activity hook mount pad 6a and left electro-magnet mount pad 6c, made things convenient for the installation of electronic activity hook and the maintenance in later stage like this.

The upper end of the right sliding hook plate 12 is provided with a right hook plate 12a tilting outwards, the right electric movable hook 14 comprises a right movable hook mounting seat 14a, a right movable hook 14b, a right electromagnet mounting seat 14c, a right electromagnet 14d, a right T-shaped rod 14e and a right compression spring 14f, the right movable hook mounting seat 14a is mounted on the right bracket 10 at a position corresponding to the right hook plate 12a, one end of the right movable hook 14b is movably mounted on the right movable hook mounting seat 14a, the middle part of the right movable hook 14b is a hook capable of being hooked with the right hook plate 12a, the other end of the right movable hook 14b is movably connected with the vertical rod end of the right T-shaped rod 14e, the right T-shaped rod 14e is movably inserted on the right electromagnet mounting seat 14c, the right compression spring 14f is sleeved on the right T-shaped rod 14e, one end of the right compression spring 14f is connected with the vertical rod end of the right T-shaped rod 14e, the other end of the right compression spring 14f abuts against the right electromagnet installation seat 14c, the right electromagnet installation seat 14c is installed on the right support 10, the right electromagnet 14d is installed on the right electromagnet installation seat 14c and is opposite to the right T-shaped rod 14e, in an initial state, a hook in the middle of the right movable hook 14b is in a hanging state with the right hook plate 12a, in action, the right electromagnet 14d is electrified to suck the right T-shaped rod 14e, and the right T-shaped rod 14e drives the hook in the middle of the right movable hook 14b to be separated from the right hook plate 12 a; the right movable hook mounting seat 14a is connected with the right electromagnet mounting seat 14 c.

When the elevator car is detected to move accidentally, the control system controls the corresponding electromagnet to be electrified, and the electromagnet can suck the T-shaped rod after being electrified, so that the movable hook is driven to move, the movable hook is separated from the corresponding hook plate, and the unhooking of the sliding hook plate is realized; meanwhile, the right movable hook mounting seat 14a is connected with the right electromagnet mounting seat 14c, so that the installation and later maintenance of the electric movable hook are facilitated.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An unexpected removal of elevator car and protection control panel that exceeds speed limit upward, the control panel includes a plurality of input port and output port, its characterized in that:

the input ports comprise an upper door area signal port X1, a lower door area signal port X2, a door lock signal port X5, a door lock and safety loop power supply common port X6, a door lock and safety loop power supply port X8 and a safety loop port X9;

the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are respectively connected with two ends of an upper electromagnet of the rope clamping device; the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are respectively connected with two ends of a lower electromagnet of the rope clamping device; the position switch control ends Y4 and Y5 are respectively connected with one end of an upper position switch and one end of a lower position switch of the rope clamping device;

the rope clamping device comprises a left fixing plate (1) and two left supports (2) clamped on two sides of the left fixing plate (1), wherein a left sliding friction plate (3) is arranged on one surface of the left fixing plate (1) in a sliding mode, a left sliding hook plate (4) is arranged on the other surface of the left fixing plate (1) in a sliding mode, the left sliding hook plate (4) is connected with the left sliding friction plate (3), a left tension spring (5) is connected to the upper end of the left sliding hook plate (4) in a hanging mode, the lower end of the left tension spring (5) is connected to the left supports (2) in a hanging mode, a left electric movable hook (6) capable of being connected with the left sliding hook plate (4) in a hanging mode is arranged on the position, corresponding to the left position switch (7), of the left sliding friction plate (3) and a left switch plug (8) matched with the left position switch (7) are arranged on the position, corresponding to the left position switch (7);

when the signal port X1 of the upper door area is powered off and the signal port X5 of the door lock is powered off, the control end Y1 of the upper electromagnet and the control end Y2 of the electromagnet loop are powered on, the port X9 of the safety loop is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps an elevator steel wire rope e, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run;

or when the signal port X2 of the lower door area is powered off and the signal port X5 of the door lock is powered off, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, and the safety loop port X9 is powered off, the lower electromagnet of the rope clamping device is started, the rope clamping device clamps the steel wire rope e of the elevator, the elevator car stops moving, the safety loop of the elevator is disconnected, and the elevator is forbidden to run.

2. The elevator car accidental movement and up overspeed protection control panel of claim 1, wherein: the input port further comprises a maintenance port X4, an upper movable button and a lower movable button, and the maintenance port X4 is connected with a maintenance interface of the elevator main control panel; when the maintenance port X4 is powered off and the upper moving button is switched on, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps an elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run; when the maintenance port X4 is powered off and the lower moving button is switched on, the lower electromagnet control end Y3 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the lower electromagnet of the rope clamping device is started, the rope clamping device clamps an elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is switched off, and the elevator is forbidden to run.

3. The elevator car accidental movement and up overspeed protection control panel of claim 1, wherein: the input port further comprises an overspeed protection port X7, and the overspeed protection port X7 is connected with a speed limit switch of the elevator main control panel; when the overspeed protection port X7 is in power failure, the upper electromagnet control end Y1 and the electromagnet loop control end Y2 are powered on, the safety loop port X9 is powered off, the upper electromagnet of the rope clamp is started, the rope clamp clamps the elevator steel wire rope e, the elevator car stops moving, the elevator safety loop is disconnected, and the elevator is forbidden to run.

4. The elevator car accidental movement and up overspeed protection control panel of claim 1, wherein: the input port further comprises a middle door area port X3, and the middle door area port X3 is connected with a middle door area interface of the elevator main control panel.

5. The elevator car accidental movement and up overspeed protection control panel of claim 3, wherein: the input voltages of the door lock signal port X5, the door lock and safety loop power supply common port X6, the overspeed protection port X7 and the door lock and safety loop power supply port X8 are suitable for 80 v-240 v, and the output direct current voltage is 1.05 v-1.3 v through a voltage stabilizing circuit consisting of a rectifier bridge, a capacitor and a resistor and is used for driving an optical coupler.