Elevator anti-shearing safety protection system and elevator

Abstract

According to the elevator anti-shearing safety protection system and the elevator, the elevator anti-shearing safety protection system comprises a detection assembly and a brake control circuit, the detection assembly comprises a first element and a second element, the first element is installed in a car door sill, and the first element can be triggered when an elevator door is closed and the car door sill is pressed; the second element is mounted in the landing door sill, and the second element can be triggered when the elevator door is closed and the landing door sill is pressed; the first element and the second element are connected in series in a brake control circuit, and the brake control circuit can cut off a brake power supply to brake the elevator when the first element and / or the second element are / is triggered. In this way, the elevator car can be stopped in time, and anti-shearing safety protection is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to elevators, and particularly relates to an elevator anti-shearing safety protection system and an elevator. Background Art

[0002] Elevators have become an important part of daily travel. However, during the operation of elevators, shearing accidents sometimes occur. For example, when a pet dog led by a rope enters or exits the elevator, or when two people carry an item and are entering or exiting the elevator, or when a person is walking between the landing door and the car door of the elevator, and the elevator moves unexpectedly. Therefore, it is particularly necessary to design an elevator anti-shearing safety protection system. Summary of the Utility Model

[0003] In view of this, it is necessary to provide an elevator anti-shearing safety protection system and an elevator for solving the above technical problems.

[0004] An elevator anti-shearing safety protection system, the elevator anti-shearing safety protection system includes:

[0005] A detection component, including a first element and a second element. The first element is installed on the car door sill, and the first element can be triggered when the elevator door is closed and the car door sill is pressed. The second element is installed on the landing door sill, and the second element can be triggered when the elevator door is closed and the landing door sill is pressed;

[0006] A brake control circuit, the first element and the second element are connected in series in the brake control circuit. The brake control circuit can disconnect the brake power supply to stop the elevator when the first element and / or the second element is triggered.

[0007] It can be understood that the brake control circuit uses the detection component to generate a detection signal after the elevator door is closed and pressed on the car door sill and / or the landing door sill, and controls the elevator car in the running state to stop moving, so as to realize the timely stop of the elevator car and play a safety protection role against shearing.

[0008] In one embodiment, the first element and / or the second element is configured as a pressure sensor.

[0009] In one embodiment, the brake control circuit includes two normally closed switches connected in series. The two normally closed switches respectively respond to the detection signals sent after the first element is triggered and the detection signals sent after the second element is triggered; when the first element and / or the second element is triggered, the sent detection signal controls the corresponding normally closed switch to disconnect, so as to disconnect the brake power supply.

[0010] In one embodiment, the elevator anti-shear safety protection system further includes an elevator control system, and when the first element and the second element are triggered, a detection signal is generated and fed back to the elevator control system;

[0011] The elevator control system controls the operation of the elevator according to the detection signal.

[0012] In one of the embodiments, the elevator control system includes an elevator position detection module, which is used to detect whether the elevator car is in a moving state and feed back to the elevator control system.

[0013] It can be understood that, through the above-mentioned structural setting, the elevator anti-shear safety protection system can prevent passengers from stepping on the car door sill and / or floor door sill when entering and exiting the elevator car and causing false protection when the elevator car is level. Among them, the elevator position detection module can be a built-in device of the elevator control system or an external device.

[0014] In one embodiment, the elevator control system includes a first interface and a second interface, the first interface is connected to the elevator position detection module, and is used to receive a movement signal fed back when the elevator car moves, and the second interface is connected to the first element and the second element, and is used to receive the detection signal.

[0015] In one of the embodiments, when the second interface receives the detection signal and the first interface does not receive the movement signal, the elevator control system controls the elevator to operate normally; when the second interface receives the detection signal and the first interface receives the movement signal, the elevator control system controls the elevator to stop operating.

[0016] In one of the embodiments, the elevator position detection module is configured as an encoder, and the movement signal is a pulse change signal fed back by the encoder.

[0017] It can be understood that by configuring the elevator position detection module as an encoder, the elevator anti-shear safety protection system can use the elevator's own encoder to determine whether the elevator car is in motion, which has the effect of reducing costs.

[0018] In one embodiment, the second interface is connected to two normally closed switches in series, and the two normally closed switches respectively respond to a detection signal emitted after the first element is triggered and a detection signal emitted after the second element is triggered; when the first element and / or the second element is triggered, the detection signal emitted controls the corresponding normally closed switch to disconnect.

[0019] In one embodiment, the elevator anti-shearing safety protection system further includes an alarm module, and the alarm module is capable of generating an alarm signal when the elevator control system controls the elevator to stop running.

[0020] It can be understood that through the above structural setting of the alarm module, the elevator anti-shearing safety protection system can play an alarm role while starting the anti-shearing safety protection, so as to facilitate the user's acquisition of the shearing accident and achieve a prompting effect.

[0021] In one embodiment, the elevator anti-shearing safety protection system further includes a fault recovery module, and the fault recovery module is controlled by manual operation to release the control of the elevator control system on the stop of the elevator car.

[0022] This application also claims protection for an elevator including the above-mentioned elevator anti-shearing safety protection system.

[0023] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0024] The elevator anti-shearing safety protection system and elevator claimed in this application use the detection component in the brake control circuit to generate a detection signal after the sill of the car door and / or the sill of the landing door is pressed, and control the elevator car in the running state to stop moving, so as to realize the timely braking of the elevator car and play a safety protection against shearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the elevator anti-shearing safety protection system provided by an embodiment of the present application.

[0027] Figure 2 It is a schematic structural diagram of the elevator anti-shearing safety protection system provided by an embodiment of the present application, where the elevator car is in a leveling state.

[0028] Figure 3 It is a schematic structural diagram of the elevator anti-shearing safety protection system provided by an embodiment of the present application, where the elevator car is in a descending state.

[0029] Figure 4Schematic diagram of the elevator anti-shearing safety protection system provided by an embodiment of the present application, where the elevator car is in the ascending state.

[0030] Figure 5 Control logic diagram when the elevator anti-shearing safety protection system provided by an embodiment of the present application is working.

[0031] Figure 6 Control logic diagram when the brake in the present application is working.

[0032] Reference numerals: 100, elevator anti-shearing safety protection system; 10, landing door sill; 20, elevator car; 21, car door sill; 30, detection component; 31, first element; 32, second element; 40, brake control circuit; 41, brake; 50, traction machine; 60, elevator control system; 61, elevator position detection module; 611, encoder; 200, object. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Such as Figure 1 、 Figure 2As shown in the figure, an elevator anti-shearing safety protection system 100 provided by an embodiment of the present application includes a detection component 30 and a brake control circuit 40. The detection component 30 includes a first element 31 and a second element 32. The first element 31 is installed on the car door sill 21, and the first element 31 can be triggered when the elevator door is closed and the car door sill 21 is pressed. The second element 32 is installed on the landing door sill 10, and the second element 32 can be triggered when the elevator door is closed and the landing door sill 10 is pressed. The first element 31 and the second element 32 are connected in series in the brake control circuit 40. The brake control circuit 40 can disconnect the brake power supply to stop the elevator when the first element 31 and / or the second element 32 is triggered. Here, in the elevator where the elevator anti-shearing safety protection system 100 is applied, the second element 32 is respectively installed in the landing door sill 10 on each floor.

[0037] It can be understood that the brake control circuit 40 can control the power supply of the motor brake. When the brake control circuit 40 is disconnected, the brake loses power and holds the brake to stop the elevator. The brake control circuit 40 uses the triggering of the first element 31 and / or the second element 32 by the car door sill 21 and / or the landing door sill 10 after the elevator door is closed and pressed, disconnects the brake control circuit 40, and controls the moving elevator car 20 to stop moving. In this way, the elevator car 20 can be stopped in time when an abnormality occurs, and the anti-shearing safety protection can be achieved. It should be noted that the elevator anti-shearing safety protection system 100 of the present application makes full use of the fact that once a shearing accident occurs, the car door sill 21 and / or the landing door sill 10 will be pressed by the object 200 stuck between the landing door and the car door.

[0038] Specifically, the elevator door includes an elevator car door and an elevator landing door. The elevator car door moves on the car door sill 21 to realize opening and closing of the door; the elevator landing door moves on the landing door sill to realize opening and closing of the door. When the elevator runs to the leveling position, the car door and the landing door are opened synchronously, and passengers can get on and off the elevator. After the car door and the landing door are closed synchronously, the elevator is ready to run away from this floor. In the present application, the first element 31 and the second element 32 are respectively installed on the car door sill 21 and the landing door sill 10, so that the first element 31 and the second element 32 can be triggered when the car door and the landing door are in the closed state and the first element 31 and / or the second element 32 is pressed, so as to use the first element 31 and the second element 32 to detect whether there is an object pressing on the car door sill or the landing door sill in the closed state of the door. If there is an object stuck between the car door and the landing door, when the elevator leaves this floor, it will surely press on the car door sill or the landing door sill, and then use the detection result to determine whether a shearing accident has occurred.

[0039] As Figure 1 shown, the first element 31 and the second element 32 are respectively installed at the central positions of the landing door sill 10 and the car door sill 21 of the elevator. As Figure 2As shown, when the elevator is at the leveling position and people enter or exit the elevator, an object 200 is left between the landing door and the car door. After the elevator door closes, the object 200 is stuck between the landing door and the car door. As Figure 4 shown, when the elevator car 20 switches from the leveling state to the running state, the object 200 is stuck between the landing door and the car door. When the elevator car 20 drives the part of the object 200 inside the elevator car 20 to rise, because the object 200 is stuck between the landing door and the car door, the part of the object 200 outside the landing door is suspended or pulled, so that the part of the object 200 clamped between the car doors presses on the first element 31 of the car door sill 21, and the object 200 can press down on the car door sill 21 to trigger the first element 31, and the first element 31 operates; as Figure 3 shown, because the object 200 is stuck between the landing door and the car door, when the elevator car 20 can drive the part of the object 200 stuck inside the elevator car 20 to descend, the part of the object 200 inside the elevator car 20 is suspended or pulled, so that the part of the object 200 clamped between the landing doors presses on the second element 32 of the landing door sill 10, and the object 200 can press down on the landing door sill 10 to trigger the second element 32, and the second element 32 operates.

[0040] Preferably, the top surfaces of the first element 31 and the second element 32 are flush with the top surfaces of the car door sill 21 and the landing door sill 10 to detect the pressure signal in time and do not affect the operation of the car door and the landing door.

[0041] Preferably, the first element 31 and the second element 32 are arranged at the door closing positions of the car door sill 21 and the landing door sill 10, so as to accurately detect the object clamped at the door closing position.

[0042] Preferably, the first element 31 and / or the second element 32 are configured as pressure sensors, so as to be able to feedback the detection signal in time after being pressed.

[0043] As Figure 6 shown, the brake control circuit 40 is connected to both ends of the power supply of the brake 41, and the brake 41 is used to control the elevator car 20 to stop moving; wherein, the first element 31 and the second element 32 are connected in series in the brake control circuit 40. So that the elevator anti-shearing safety protection system 100 can use the elevator's own brake 41 to realize the braking stop of the elevator car 20.

[0044] Preferably, as Figure 6As shown in the figure, the brake control circuit 40 includes two normally closed switches connected in series. The two normally closed switches respectively respond to the detection signals sent after the first element 31 is triggered, and the detection signals sent after the second element 32 is triggered. When the first element 31 and / or the second element 32 is triggered, the sent detection signal controls the corresponding normally closed switch to open, so as to cut off the brake power supply. Then, once the first element 31 or the second element 32 is triggered to send a detection signal, the brake control circuit 40 will be disconnected. At the same time, when the first element 31 and / or the second element 32 is no longer pressed and no longer sends a detection signal, the normally closed switch returns to the normally closed state, the brake control circuit 40 is powered on to open the brake, and the elevator can operate normally.

[0045] Specifically, the two normally closed switches can be selected as relays.

[0046] Preferably, the first element 31 and / or the second element 32 is configured as a pressure sensor. It should be noted that the working principle of how the first element 31 is assembled into the car sill 21 and how the second element 32 is assembled into the landing sill 10 can be specifically set according to the usage requirements, and will not be elaborated here. Of course, in other embodiments, the first element 31 and the second element 32 can also be configured as micro-travel switches, photoelectric switches, etc., which will not be elaborated here.

[0047] As Figure 5 shown, the elevator anti-shearing safety protection system 100 further includes an elevator control system 60 and a traction machine 50. The traction machine 50 is drivingly connected to the elevator car 20 and is electrically connected to the elevator control system 60 to control the ascending / descending of the elevator car 20 under the control of the elevator control system 60. When the first element 31 and the second element 32 are triggered, a detection signal is generated and fed back to the elevator control system 60. The elevator control system 60 controls the elevator operation according to the detection signal.

[0048] It can be understood that when the first element 31 and the second element 32 are triggered to stop the elevator, and at the same time the detection signal is fed back to the elevator control system 60, it helps the elevator control system 60 to quickly check for problems and make a response.

[0049] As Figure 5 shown, the elevator control system 60 includes an elevator position detection module 61. The elevator position detection module 61 is used to detect whether the elevator car 20 is in a moving state and feed it back to the elevator control system 60. That is to say, the signal detected by the elevator position detection module 61 can be used as the detection and judgment signal for the elevator control system 60 to judge whether the elevator car 20 is moving. Here, when the elevator position detection module 61 judges that the elevator car 20 is in a moving state, the elevator control system 60 can control the elevator car 20 to stop running according to the detection signal; otherwise, the elevator control system 60 controls the elevator car 20 to run normally according to the detection signal.

[0050] It can be understood that the elevator position detection module 61 can be an original component built into the elevator control system 60 , or can be an external component installed outside the elevator control system 60 .

[0051] In one embodiment, the elevator control system 60 includes a first interface and a second interface, the first interface is connected to the elevator position detection module 61, and is used to receive the movement signal fed back when the elevator car 20 moves, and the second interface is connected to the first element 31 and the second element 32, and is used to receive the detection signal. In this way, when the second interface receives the detection signal and the first interface does not receive the movement signal, the elevator control system 60 controls the elevator to run normally; when the second interface receives the detection signal and the first interface receives the movement signal, the elevator is controlled to stop running.

[0052] Preferably, the second interface is connected to two normally closed switches in series, and the two normally closed switches respectively respond to the detection signal sent after the first element 31 is triggered and the detection signal sent after the second element 32 is triggered; when the first element 31 and / or the second element 32 is triggered, the detection signal sent controls the corresponding normally closed switch to be disconnected. The elevator control system 60 determines whether the detection signal is received by checking whether the second interface is disconnected.

[0053] Specifically, relays can be selected as the two normally closed switches.

[0054] like Figure 5 As shown, the elevator position detection module 61 is configured as an encoder 611, and the movement signal is a pulse change signal fed back by the encoder 611. The elevator anti-shear safety protection system 100 can use the encoder 611 of the elevator to determine whether the elevator car 20 is in motion, which has the effect of reducing costs. It should be noted that the operation of the elevator car 20 is not necessarily the operation of the elevator car 20 under normal control. When the elevator car 20 is out of control, the movement of the elevator car 20 is also a kind of operation. Regardless of whether it is normal operation or movement caused by the weight of the elevator car 20, the traction machine 50 will definitely rotate due to active or passive dragging, so that the encoder 611 on the traction machine 50 will inevitably detect pulse changes.

[0055] In one embodiment, the elevator anti-shearing safety protection system 100 further includes an alarm module (not shown), which can generate an alarm signal when the elevator control system 60 controls the elevator to stop running. That is, the elevator anti-shearing safety protection system 100 can play an alarm role while starting the anti-shearing safety protection, so that the user can obtain the shearing accident and achieve the role of prompting. Here, the alarm module can generate an alarm in the form of sound and light, and can also transmit the corresponding alarm signal to the background system of the elevator.

[0056] In one embodiment, the elevator anti-shearing safety protection system 100 further includes a fault recovery module (not shown in the figure), and the fault recovery module is controlled by manual operation to release the control of the elevator control system 60 over the stop operation of the elevator car 20. That is to say, once the elevator anti-shearing safety protection system 100 starts the anti-shearing protection, the elevator control system 60 controls the elevator to stop running. Even if the elevator position detection module 61 detects a normal signal and the brake control circuit 40 is normal, the elevator car 20 still cannot run until the fault recovery module is manually operated to resume normal operation.

[0057] In addition, the present application also provides an elevator, including the above-mentioned elevator anti-shearing safety protection system 100.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0059] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. An elevator anti-shearing safety protection system, characterized in that The elevator anti-shearing safety protection system (100) includes: A detection component (30), including a first element (31) and a second element (32). The first element (31) is installed on the car door sill (21), and the first element (31) can be triggered when the elevator door is closed and the car door sill (21) is pressed. The second element (32) is installed on the landing door sill (10), and the second element (32) can be triggered when the elevator door is closed and the landing door sill (10) is pressed. A brake control circuit (40). The first element (31) and the second element (32) are connected in series in the brake control circuit (40). The brake control circuit (40) can disconnect the brake power supply to stop the elevator when the first element (31) and / or the second element (32) is triggered.

2. The elevator anti-shearing safety protection system according to claim 1, wherein The first element (31) and / or the second element (32) is configured as a pressure sensor.

3. The elevator anti-shearing safety protection system according to claim 1, characterized in that, The brake control circuit (40) includes two normally closed switches connected in series. The two normally closed switches respectively respond to the detection signals sent after the first element (31) is triggered and the detection signals sent after the second element (32) is triggered. When the first element (31) and / or the second element (32) is triggered, the sent detection signals control the corresponding normally closed switches to disconnect, so as to disconnect the brake power supply.

4. The elevator anti-shearing safety protection system according to claim 1, characterized in that, The elevator anti-shearing safety protection system (100) further includes an elevator control system (60). When the first element (31) and the second element (32) are triggered, detection signals are generated and fed back to the elevator control system (60). The elevator control system (60) controls the operation of the elevator according to the detection signals.

5. The elevator anti-shearing safety protection system according to claim 4, wherein, The elevator control system (60) includes an elevator position detection module (61). The elevator position detection module (61) is used to detect whether the elevator car (20) is in a moving state and feed it back to the elevator control system (60).

6. The elevator anti-shearing safety protection system according to claim 5, characterized in that, The elevator control system (60) includes a first interface and a second interface. The first interface is connected to the elevator position detection module (61) for receiving the movement signal fed back when the elevator car (20) moves. The second interface is connected to the first element (31) and the second element (32) for receiving the detection signals.

7. The elevator anti-shearing safety protection system according to claim 6, characterized in that, When the elevator control system (60) receives the detection signal at the second interface and does not receive the movement signal at the first interface, it controls the elevator to run normally. When the elevator control system (60) receives the detection signal at the second interface and receives the movement signal at the first interface at the same time, it controls the elevator to stop running.

8. The elevator anti-shearing safety protection system according to claim 6, characterized in that, The elevator position detection module (61) is configured as an encoder (611), and the movement signal is the pulse change signal fed back by the encoder (611).

9. The elevator anti-shearing safety protection system according to claim 6, wherein, The second interface is connected to two serially-connected normally-closed switches, and the two normally-closed switches respectively respond to a detection signal emitted after the first element (31) is triggered and a detection signal emitted after the second element (32) is triggered; when the first element (31) and / or the second element (32) is triggered, the emitted detection signal controls the corresponding normally-closed switch to open.

10. An elevator, characterized in that, Comprising the elevator anti-shearing safety protection system (100) according to any one of claims 1 to 9.

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