Device for sensing and monitoring wire and strand breakage of steel wire rope of elevator

Abstract

The utility model discloses an induction monitoring device for wire and strand breakage of an elevator steel wire rope, which belongs to the technical field of elevator manufacturing and comprises a steel wire rope detection magnetic inductor, a steel wire rope detection mechanical switch and an elevator controller. The steel wire rope detection magnetic sensor transmits a switch-off electric signal to the elevator controller, and the elevator controller controls the elevator to stop and open the door on the nearby floor flat layer to wait for rescue and maintenance. According to the utility model, key positions of the elevator steel wire rope, the cladding belt, the counterweight diversion sheave and the counterweight frame are monitored in an omnibearing manner, so that the safe operation of the elevator is monitored, and the problems of wire and strand breakage of the steel wire rope and the cladding belt on the counterweight side of the elevator, deviation of the counterweight wheel, the counterweight frame and the like are solved under the condition that the power supply on the counterweight side of the elevator is inconvenient to take. And monitoring operation on protection blind areas such as elevator counterweight steel wire ropes, counterweight wrapping belts, counterweight frames and counterweight diversion sheaves under the conditions that the steel wire ropes at an elevator machine room are broken and fall off and no power supply exists in an elevator hoistway is made up, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator manufacturing, in particular to an elevator steel wire rope broken wire and broken strand induction monitoring device. Background Technique

[0002] With the advancement of China's modernization drive, elevators are increasingly widely used, and at the same time, the safety performance of elevators has received more and more attention. Especially after recent elevator falling incidents, more attention has been paid to related component devices such as the counterweight reeving sheave steel wire rope, traction sheave steel wire rope, and wrapping belt of elevators. Every time an elevator is maintained and inspected, it is required to check the counterweight steel wire rope and the counterweight reeving sheave and report the situation. The existing elevator steel wire rope broken wire and broken strand damage warning device has a small protection range, only warning and protecting the broken wire and broken strand damage of the steel wire rope at the traction sheave of the elevator main engine. The damaged and broken strand steel wire rope touches the mechanical switch and then triggers the warning protection. If the steel wire rope at the traction sheave of the machine room main engine is working normally, without broken wire or broken strand, but the steel wire rope of the machine room guide sheave slips out of the groove and falls down, the existing steel wire rope broken wire and broken strand protection device may not act and cannot give an immediate warning and protection.

[0003] Especially if there is damage such as broken wire and broken strand in the counterweight reeving sheave steel wire rope, car bottom reeving sheave steel wire rope, and wrapping belt, and timely warning and protection cannot be given, it will cause entanglement and damage with other steel wire ropes. Serious mechanical damage to the counterweight reeving sheave shaft may occur due to the serious slipping of the counterweight reeving sheave steel wire rope, mechanical damage to the counterweight frame fracture and mechanical deformation, or even pulling off the counterweight reeving sheave, resulting in safety accidents. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an elevator steel wire rope broken wire and broken strand induction monitoring device

[0005] To achieve the above purpose, the following technical solution is adopted: The utility model provides an elevator steel wire rope broken wire and broken strand induction monitoring device, which includes a steel wire rope detection mechanical switch, a steel wire rope detection magnetic inductor, and an elevator controller. The middle part of the steel wire rope detection mechanical switch is designed as a mechanical lever, and the top is designed as a magnetic isolation lever. The two sides of the mechanical lever are convex with short levers of 2-3 cm, and the left and right width can be adjusted. The distance from the short levers to the counterweight wheel is 1 cm, and the distance from the mechanical lever to the steel wire rope is 1 cm; the magnetic isolation lever can be designed as a magnetic isolation plate or a magnetic switch to cooperate with the steel wire rope detection magnetic inductor to work.

[0006] Furthermore, the steel wire rope detection mechanical switch is adjusted to the middle position, and the up and down positions are for the switch to act. When the detection mechanical switch is adjusted to the middle position, the magnetic isolation lever just inserts into the groove of the steel wire rope detection magnetic inductor. When the broken end of the steel wire rope touches the mechanical lever, the mechanical lever immediately rebounds up or down, and the magnetic isolation lever shifts and disengages from the groove of the steel wire rope detection magnetic inductor. The steel wire rope detection magnetic inductor immediately transmits an electrical signal to the elevator controller.

[0007] Furthermore, when installed in the elevator room, the wire rope detection mechanical switch is installed on the main frame between the main traction wheel and the guide wheel, the distance between the mechanical hitting rod and the wire rope is adjusted to 1 cm, and the magnetic isolation plate is just inserted into the wire rope detection magnetic sensor slot. When the wire rope is out of the slot or the broken strand touches the mechanical hitting rod, it bounces back immediately, and the magnetic isolation plate is separated from the wire rope detection magnetic sensor slot. The wire rope detection magnetic sensor transmits the switch action electrical signal to the elevator controller to control the elevator to open the door and stop the elevator at the nearest level.

[0008] Furthermore, a wire rope detection magnetic sensor is installed on the side of the elevator car, and the wire rope detection mechanical switch is fixedly installed in the middle of the elevator counterweight frame. The elevator counterweight frame supports and fixes the wire rope detection mechanical switch. The distance between the mechanical hitting rod and the wire rope is adjusted to 1 cm, and the short rods protruding 2-3 cm on both sides are adjusted to be 1 cm close to the counterweight wheel. The magnetic isolation hitting plate is just inserted into the wire rope detection magnetic sensor groove installed on the side of the elevator car. Every time the elevator car and the counterweight wheel run up and down to the position where the wire rope detection sensor meets the wire rope detection mechanical switch The magnetic isolation plate on the counterweight side is inserted into the wire rope detection magnetic sensor slot to monitor whether the elevator wire rope, covering belt and counterweight wheel are normal. If the wire rope detection sensor does not detect the magnetic isolation plate signal when the elevator car and the counterweight meet in the up and down movement, the wire rope detection sensor immediately transmits an electrical signal to the elevator car top controller. The car top controller controls the elevator to the nearest level, stops the elevator, opens the door and waits for maintenance through the signal. At the same time, the car top controller is linked to a mobile phone wireless remote transmission switch. The remote transmission switch sends a signal to connect to the management personnel's mobile phone and alarms through the management personnel's mobile phone.

[0009] Furthermore, the wire rope detection sensor can be installed on the elevator shaft wall, the wire rope detection sensor connects the signal line to the machine room elevator controller, the wire rope detection mechanical switch is fixedly installed in the middle of the elevator counterweight frame, the elevator counterweight frame supports and fixes the wire rope detection mechanical switch, the magnetic isolation plate is correspondingly inserted into the wire rope detection magnetic sensor slot installed on the shaft wall, the wire rope detection magnetic sensor can be linked to the signal line and transmitted to the machine room controller, when the wire rope detection mechanical switch meets the wire rope detection magnetic sensor installed on the shaft wall, the magnetic isolation plate is just inserted into the wire rope detection magnetic sensor slot of the shaft wall, when the wire rope is out of the slot or broken and touches the mechanical hitting rod action, it immediately bounces back, and the magnetic isolation plate is separated from the wire rope detection magnetic sensor slot, and the wire rope detection magnetic sensor transmits the switch action electrical signal to the machine room elevator controller to control the elevator to the nearest level, stop the elevator, open the door and wait for maintenance, to monitor whether the elevator wire rope, covering belt and counterweight wheel are normal.

[0010] Further, the monitoring device can also be installed at the position of the bottom guide wheel of the car and the counterweight idler pulley on the car top to monitor the normal operation of the elevator steel wire rope and the covering belt in the same form.

[0011] Further, the steel wire rope detection magnetic inductor can be designed as an elevator photoelectric inductor or a magnetic inductor. The steel wire rope detection magnetic inductor is controlled by weak signal electricity, and the wiring terminal of the steel wire rope detection mechanical switch can be set to be controlled by strong electricity, realizing the control form of separating strong and weak electricity and turning on and off simultaneously.

[0012] The beneficial effects of the present utility model are as follows: The present utility model comprehensively monitors the safe operation of the elevator by monitoring key positions such as the elevator steel wire rope, the covering belt, the counterweight idler pulley, and the counterweight frame. It solves the problem of monitoring the broken wires and broken strands of the steel wire rope and the covering belt on the counterweight side of the elevator, the offset of the counterweight wheel, and the counterweight frame in the case where it is inconvenient to obtain power on the counterweight side of the elevator, making up for the monitoring of the broken strands and falling of the steel wire rope in the elevator machine room and the protection blind areas such as the counterweight steel wire rope, the counterweight covering belt, the counterweight frame, and the counterweight idler pulley in the elevator shaft without power, effectively avoiding the occurrence of elevator safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an elevator steel wire rope broken wire and broken strand induction monitoring device of the present utility model;

[0014] Figure 2 It is a top view of an elevator steel wire rope broken wire and broken strand induction monitoring device of the present utility model installed in the elevator machine room;

[0015] Figure 3 It is a top view of an elevator steel wire rope broken wire and broken strand induction monitoring device of the present utility model installed in the elevator shaft;

[0016] Figure 4 It is a structural diagram of the variation and variant form of an elevator steel wire rope broken wire and broken strand induction monitoring device of the present utility model;

[0017] Figure 5 It is a flowchart of the operation of an elevator steel wire rope broken wire and broken strand induction monitoring device of the present utility model. Legend description:

[0018] Legend: 1. Steel wire rope detection magnetic inductor; 2. Guide wheel; 3. Traction wheel; 4. Steel wire rope detection mechanical switch; 41. Mechanical lever; 42. Magnetic isolation plate; 5. Elevator controller; 51. Car top controller; 6. Mobile phone wireless remote transmission switch; 7. Counterweight idler pulley; 8. Mobile phone of the management personnel; 12. Elevator car top; 13. Shaft wall; 14. Counterweight frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figures 1-5 , an embodiment provided by the utility model: see Figure 1 The invention discloses an elevator wire rope broken wire and strand induction monitoring device. The middle part of the wire rope detection mechanical switch 4 is designed as a mechanical hitting rod 41, and the top part is designed as a magnetic isolation hitting plate 42. The magnetic isolation hitting plate 42 is designed to be inserted into the wire rope detection magnetic sensor 1 for cooperation. The wire rope detection magnetic sensor 1 can be designed as an elevator photoelectric sensor or a magnetic sensor.

[0021] See Figure 1 The wire rope detection mechanical switch 4 is adjusted to the middle position, and the upper and lower positions are for triggering the switch action. The wire rope detection mechanical switch 4 is adjusted to the middle position, and the magnetic isolation plate 42 is just inserted into the groove of the wire rope detection magnetic sensor 1. When the broken strand of the wire rope touches the mechanical hitting rod 41, the mechanical hitting rod 41 immediately rebounds up or down, and the linkage magnetic isolation plate 42 shifts out of the wire rope detection magnetic sensor 1 to get out of the groove. The wire rope detection magnetic sensor 1 immediately transmits an electrical signal to the elevator controller 5, and the elevator controller controls the elevator to open the door and stop the elevator at the nearest level. At the same time, the elevator controller 5 links the mobile phone wireless remote transmission switch 6 to send a signal to the management personnel's mobile phone 8 to alarm.

[0022] See Figure 2 When the wire rope broken wire and strand induction monitoring device is installed in the elevator room, the wire rope detection mechanical switch 4 is installed on the lower side of the wire rope at the main frame between the main traction wheel 3 and the guide wheel 2, the distance between the monitoring device mechanical hitting rod 41 and the wire rope is adjusted to 1 cm, and the magnetic isolation plate 42 is just inserted into the groove of the wire rope detection magnetic sensor 1. When the wire rope is out of the groove and the broken strand touches the monitoring device mechanical hitting rod 41, the switch immediately bounces back, and the magnetic isolation plate 42 is separated from the wire rope detection magnetic sensor 1. The wire rope detection magnetic sensor 1 transmits the switch action electrical signal to the elevator controller 5. The elevator controller controls the elevator to open the door and stop the elevator at the nearest level. At the same time, the elevator controller 5 links the mobile phone wireless remote transmission switch 6 to send a signal to the management personnel's mobile phone 8 to alarm.

[0023] See Figure 3, install a wire rope detection magnetic inductor 1 on the elevator car side, and fixedly install a wire rope detection mechanical switch 4 in the middle support of the counterweight frame 14 on the elevator counterweight side. The short rods protruding 2-3 cm on both sides of its mechanical lever 41 can be adjusted left and right, and the distance from both sides of the counterweight return pulley is 1 cm. The mechanical lever 41 is installed at a distance of 1 cm from the wire rope of the counterweight pulley; the magnetic separation plate 42 is adjusted to just be inserted and cooperate with the wire rope detection magnetic inductor 1 installed on the car side. When the counterweight pulley deviates and the wire rope breaks and touches the mechanical lever 41, it will bounce back immediately, and the magnetic separation plate 42 will disengage from the wire rope detection magnetic inductor 1 on the car side and come out of the groove. The wire rope detection magnetic inductor 1 transmits the switch action electrical signal to the car top controller 51 on the car side, and the signal controls the elevator to level off, open the door and stop the elevator. At the same time, the car top controller 51 is linked to the 6 mobile phone wireless remote transmission switch, and sends a signal to the mobile phone of the management personnel 8 for alarm.

[0024] For the described wire rope breakage and strand breakage induction monitoring device, when the wire rope detection magnetic inductor 1 is installed on the elevator hoistway wall 13 and the signal line is connected to the elevator machine room controller 5, a wire rope detection mechanical switch 4 is fixedly installed in the middle support of the counterweight frame 14 on the elevator counterweight side. Its mechanical plate 41 is installed close to the wire rope of the return pulley. When the wire rope of the guide pulley comes out of the groove and breaks, it touches the mechanical lever 41, and the magnetic separation plate 42 bounces back and shifts to disengage from the wire rope detection magnetic inductor 1 on the car side and comes out of the groove. The wire rope detection magnetic inductor 1 transmits the switch-off electrical signal to the elevator machine room controller 5, controls the elevator to level off, open the door and stop the elevator, and the remote transmission switch sends a signal to the mobile phone of the management personnel 8 for alarm.

[0025] Working principle

[0026] The middle part of the wire rope detection mechanical switch 4 is designed as a mechanical lever 41 with short rods protruding 2-3 cm on both sides. The width can be adjusted left and right, and the distance from both sides of the counterweight return pulley is 1 cm. The top is designed as a magnetic separation plate 42, and the magnetic separation plate 42 is designed as a magnetic separation plate and inserted into the wire rope detection magnetic inductor 1. When the wire rope breaks or strands, it touches the mechanical lever 41 and bounces back immediately, and the magnetic separation plate 42 disengages from the wire rope detection magnetic inductor 1 and comes out of the groove.

[0027] See Figure 3 , install a wire rope detection magnetic inductor 1 on the elevator car side, and fixedly install a wire rope detection mechanical switch 4 in the middle support of the counterweight frame 14 on the elevator counterweight side. The short rods protruding 2-3 cm on both sides of its lever 41 can be adjusted left and right, and the distance from both sides of the counterweight return pulley is 1 cm. The mechanical lever 41 is installed at a distance of 1 cm from the wire rope of the counterweight pulley; the magnetic separation plate 42 is designed as a magnetic separation plate or a magnetic switch, and the magnetic separation plate 42 is inserted into the groove of the wire rope detection magnetic inductor 1 installed on the elevator car side. The signal line of the wire rope detection magnetic inductor 1 is connected to the elevator car top controller 51 to control the elevator to cooperate.

[0028] The wire rope broken wire and broken strand induction monitoring device can be installed at the elevator machine room, counterweight side, elevator hoistway wall or the position of the bottom guide wheel of the car to monitor the normal operation of the elevator wire rope and the covering tape.

[0029] See Figure 4 , the wire rope detection mechanical switch 4 can be set with a wiring terminal to connect to the strong power control, while the wire rope detection magnetic inductor 1 is controlled by weak signal, realizing the separation control form of strong and weak power and improving the safety of the system.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An elevator wire rope broken wire and strand induction monitoring device, comprising a wire rope detection mechanical switch (4), a wire rope detection magnetic sensor (1) and an elevator controller (5), characterized in that: The middle part of the wire rope detection mechanical switch (4) is designed as a mechanical hitting rod (41), and the top is designed as a magnetic isolation hitting plate (42). The short rods protruding 2-3 cm on both sides of the mechanical hitting rod (41) can be adjusted in width to the left and right, and the distance between the hitting rod and the counterweight wheel is 1 cm, and the distance between the hitting rod and the wire rope is 1 cm; the magnetic isolation hitting plate (42) can be designed as a magnetic isolation plate or a magnetic switch to cooperate with the wire rope detection magnetic sensor (1).

2. The elevator wire rope broken wire and strand induction monitoring device according to claim 1 is characterized in that: The steel wire rope detection mechanical switch (4) is adjusted to the middle position, and the upper and lower positions are switch actions. When the detection mechanical switch (4) is adjusted to the middle position, the magnetic isolation plate (42) is just inserted into the groove of the steel wire rope detection magnetic sensor (1). When the steel wire rope breaks and touches the mechanical hitting rod (41), the mechanical hitting rod (41) immediately rebounds up or down, and the magnetic isolation plate (42) shifts out of the steel wire rope detection magnetic sensor (1) and disengages from the groove. The steel wire rope detection magnetic sensor (1) immediately transmits an electrical signal to the elevator controller (5).

3. The elevator wire rope broken wire and strand induction monitoring device according to claim 2 is characterized in that: When installed in the elevator machine room, the wire rope detection mechanical switch (4) is installed on the main frame between the main traction wheel (3) and the guide wheel (2), the distance between the mechanical hitting rod (41) and the wire rope is adjusted to 1 cm, and the magnetic isolation plate (42) is just inserted into the groove of the wire rope detection magnetic sensor (1). When the wire rope is out of the groove or the strand is broken and touches the mechanical hitting rod (41), it immediately rebounds, and the magnetic isolation plate (42) is separated from the groove of the wire rope detection magnetic sensor (1). The wire rope detection magnetic sensor (1) transmits the switch action electrical signal to the elevator controller (5) to control the elevator to open the door and stop the elevator at the nearest level.

4. The elevator wire rope broken wire and strand induction monitoring device according to claim 3 is characterized in that: A wire rope detection magnetic sensor (1) is installed on the side of the elevator car. The wire rope detection mechanical switch (4) is fixedly installed in the middle of the elevator counterweight frame (14). The elevator counterweight frame (14) supports and fixes the wire rope detection mechanical switch (4). The distance between the mechanical hitting rod (41) and the wire rope is adjusted to 1 cm. The short rods protruding 2-3 cm on both sides are adjusted to be 1 cm close to the counterweight wheel. The magnetic isolation hitting plate (42) is just inserted into the groove of the wire rope detection magnetic sensor (1) installed on the side of the elevator car. When the elevator car and the counterweight wheel move up and down each time to the position where the wire rope detection magnetic sensor (1) and the wire rope detection mechanical switch (4) meet, the counterweight side The magnetic isolation plate (42) is inserted into the groove of the wire rope detection magnetic sensor (1) to monitor whether the elevator wire rope, the covering belt and the counterweight wheel are normal. If the wire rope detection magnetic sensor (1) does not detect the magnetic isolation plate (42) signal when the elevator car and the counterweight meet in the upward and downward movement, the wire rope detection magnetic sensor (1) immediately transmits an electrical signal to the elevator car top controller (51). The car top controller (51) controls the elevator to stop at the nearest level and open the door to wait for maintenance through the signal. At the same time, the car top controller (51) is linked to a mobile phone wireless remote transmission switch (6). The remote transmission switch (6) sends a signal to connect to the management personnel's mobile phone terminal (8) and alarms through the management personnel's mobile phone terminal (8).

5. The elevator wire rope broken wire and strand induction monitoring device according to claim 4 is characterized in that: The steel wire rope detection magnetic sensor (1) can be installed on the elevator shaft wall (13), the steel wire rope detection magnetic sensor (1) is connected to the signal line to the machine room elevator controller (5), the steel wire rope detection mechanical switch (4) is fixedly installed in the middle of the elevator counterweight frame (14), the elevator counterweight frame (14) plays a supporting and fixing role for the steel wire rope detection mechanical switch (4), the magnetic isolation plate (42) is correspondingly inserted into the steel wire rope detection magnetic sensor (1) groove installed on the shaft wall, the steel wire rope detection magnetic sensor (1) can be linked to the signal line to transmit to the machine room controller, the steel wire rope detection magnetic sensor (1) is connected ... When the detection mechanical switch (4) meets the steel wire rope detection magnetic sensor (1) installed on the shaft wall, the magnetic isolation plate (42) is just inserted into the groove of the steel wire rope detection magnetic sensor (1) on the shaft wall. When the steel wire rope is out of the groove or the strand is broken and touches the mechanical hitting rod (41), it immediately rebounds and the magnetic isolation plate (42) is separated from the steel wire rope detection magnetic sensor (1) groove. The steel wire rope detection magnetic sensor (1) transmits the switch action electrical signal to the machine room elevator controller (5) to control the elevator to stop at the nearest level and open the door to wait for maintenance, so as to monitor whether the elevator steel wire rope, covering belt and counterweight wheel are normal.

6. The elevator wire rope broken wire and strand induction monitoring device according to claim 5, characterized in that: The monitoring device can also be installed at the bottom guide wheel of the car and the anti-rope wheel on the top of the car to monitor whether the elevator wire rope and covering belt are operating normally in the same way.

7. The elevator wire rope broken wire and strand induction monitoring device according to claim 6, characterized in that: The steel wire rope detection magnetic sensor (1) can be designed as an elevator photoelectric sensor or a magnetic sensor. The steel wire rope detection magnetic sensor (1) is a signal weak current control. The steel wire rope detection mechanical switch (4) can be provided with a wiring terminal connected to a strong current control, thus realizing a strong and weak current separation and simultaneous connection and disconnection control mode.

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