Elevator traction motor operation control method based on temperature monitoring result

Abstract

The invention discloses an elevator traction motor operation control method based on a temperature monitoring result, and the elevator traction motor operation control method based on the temperature monitoring result is realized based on an elevator traction motor monitoring system based on the temperature monitoring result. The elevator traction motor monitoring system based on the temperature monitoring result comprises a first temperature detection device, a second temperature detection device, a first temperature processing circuit, a second temperature processing circuit, a first controller, a first remote communication module, a second controller and a second remote communication module. The first temperature detection device is installed at a traction wheel in the elevator and used for detecting the temperature T1 of the traction wheel in the elevator, and the second temperature detection device is used for detecting the temperature T2 of a traction motor in the elevator. According to the elevator traction motor operation control method based on the temperature monitoring result, the problem that in the prior art, due to the fact that the temperature is too high when a traction wheel works for a long time, abrasion of the traction wheel is large is solved.

Description

Technical Field

[0001] The invention relates to the field of elevator traction motor control, and in particular to an elevator traction motor control operation method based on temperature monitoring results. Background Art

[0002] The Chinese patent discloses an elevator traction main machine with application number 202420324088.1, including a traction wheel, a traction motor for driving the traction wheel, a speed limiter for emergency braking, and an elevator control cabinet for controlling the traction motor. The traction motor is connected to a main machine base, and a vibration reduction structure is provided in the main machine base. The vibration reduction structure includes a support frame and a plurality of piston cylinders. A piston rod is slidably connected in each piston cylinder, and each piston rod is fixedly connected to the support frame, which is fixedly connected to the main machine base. The end of the piston cylinder away from the piston rod is fixedly connected to the main machine base.

[0003] Although the above-mentioned elevator traction main machine can achieve the effect of reducing vibration, the elevator traction main machine still has the following disadvantages: when the traction wheel of the traction main machine works for a long time, especially when the ambient temperature is high, the traction wheel temperature is too high, which will cause greater wear and tear, resulting in slippage between the traction wheel and the wire rope, resulting in deviations in the lifting distance of the elevator car, and the elevator may not stop at the same level as each floor, leading to safety accidents. Summary of the invention

[0004] The present invention provides an elevator traction motor control operation method based on temperature monitoring results, which solves the problem in the prior art that the traction wheel is greatly worn due to the high temperature of the traction wheel during long-term operation.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention discloses a method for controlling an elevator traction motor based on temperature monitoring results. The method for controlling an elevator traction motor based on temperature monitoring results is implemented based on a monitoring system for an elevator traction motor based on temperature monitoring results. The monitoring system for an elevator traction motor based on temperature monitoring results comprises: a first temperature detection device, a second temperature detection device, a first temperature processing circuit, a second temperature processing circuit, a first controller, a first remote communication module, a second controller and a second remote communication module. The first temperature detection device is installed at a traction wheel in an elevator. The first temperature detection device is used to detect the temperature T of the traction wheel in the elevator. 1 The second temperature detection device is installed at the elevator traction motor. The second temperature detection device is used to detect the temperature T of the traction motor in the elevator. 2The output end of the first temperature detection device is connected to the input end of the first controller through the first temperature processing circuit, the first controller is connected to the second controller through the first remote communication module, the output end of the second temperature detection device is connected to the input end of the second controller through the second temperature processing circuit, and the second controller is connected to the main control box in the elevator through the second remote communication module. The elevator traction motor control operation method based on temperature monitoring results includes the following steps: S1, obtaining the real-time traction wheel temperature T through the first temperature detection device 1 , and the second temperature detection device obtains the real-time temperature T of the traction motor 2 ; S2, according to the real-time traction wheel temperature T 1 And the real-time traction motor temperature T 2 Combined control of the operation of the traction motor in the elevator.

[0007] Preferably, the first temperature detection device includes: a first temperature sensor, a detection roller, a lifting frame, a base and a top-height spring. The base is installed at the bottom of the traction sheave, the lifting frame is installed on the base, the lifting frame can be lifted and lowered relative to the base, a top-height spring is installed between the lifting frame and the base, a rotatable detection roller is installed on the lifting frame, the detection roller is used to keep in close contact with the traction sheave under the elastic force of the top-height spring, the top of the traction sheave is the first temperature sensor in the elevator, and the first temperature sensor is used to detect the temperature of the traction sheave by detecting the temperature of the detection roller in contact with the traction sheave.

[0008] Preferably, the lifting frame includes: a lifting base, a lifting rod and a guide shaft, the lifting rod passes through the base, the lifting rod can be lifted and lowered relative to the base, the lifting base is fixed to the top of the lifting rod, the lifting base is installed with a guide shaft, the guide shaft extends into the detection roller, the guide shaft guides the detection roller to rotate, the guide shaft cannot rotate relative to the lifting base, and the lifting base cannot rotate relative to the base, a detection circuit board is installed on the guide shaft, a first temperature sensor is installed on the detection circuit board, wires are welded on the detection circuit board, and the wires are used to electrically connect the first temperature sensor with the first temperature processing circuit.

[0009] Preferably, the guide shaft includes: a guide section, a limited rotation section and a connecting section. The guide section is a conical structure. The guide section passes through the detection roller. The limited rotation sections extend from both ends of the guide section. The limited rotation section is a square structure. The limited rotation section passes through the lifting base. Each limited rotation section has a connecting section extending on the side away from the guide section. The connecting section is threadedly connected with a nut, and the nut limits the guide shaft from being separated from the lifting base.

[0010] Preferably, the side wall of the guide section is recessed to form a mounting groove, in which the detection circuit board is mounted, and both the rotation limiting section and the connecting section are provided with a pass-through groove through which the power line passes.

[0011] Preferably, a displacement detection device is installed on the base, and the displacement detection device is used to detect the distance d between the lifting frame and the base.

[0012] Preferably, step S2 comprises the following steps:

[0013] S21, determine whether d is always greater than d0 in the period T before the current moment, T and d0 are both set values, if yes, proceed to step S22; if not, output the judgment conclusion that the top spring is damaged and proceed to step S23;

[0014] S22, determine whether the first condition and the second condition are met. If one condition is not met, the output judgment conclusion is that the traction motor and the traction wheel in the elevator traction main machine have both been over-operated, and a command to stop the traction motor operation is issued, and step S23 is performed; if all conditions are met, the output judgment conclusion is that the elevator traction main machine is operating normally and step S23 is performed; the first condition is: T 1 Less than T 10 , T 10 is the set value; the second condition is: T 2 Less than T 20 , T 20 is the set value;

[0015] S23, end.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present application, the first temperature detection device is arranged at the traction sheave to detect the temperature of the traction sheave, thereby avoiding the phenomenon that the traction sheave continues to work when the temperature is too high and causes excessive wear of the traction sheave, thereby improving the protection of the traction sheave. Furthermore, the temperature of the traction motor housing can also be detected at the same time, thereby realizing the detection of the real-time traction sheave temperature T 1 And the real-time traction motor temperature T 2 Then, the operation of the traction motor in the elevator is jointly controlled to avoid excessive operation of the traction motor and traction wheel, thereby improving the safety of elevator operation.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the first temperature detection device and the elevator traction main unit.

[0020] Figure 2 for Figure 1 Cross-sectional view of the first temperature detection device.

[0021] Figure numerals: traction motor 1, traction wheel 2, wire rope 3, first temperature sensor 51, detection roller 52, lifting frame 53, lifting base 531, lifting rod 532, guide shaft 532, base 54, lifting spring 55, detection circuit board 61, wire 62, second temperature detection device 7. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0023] like Figure 1 as well as Figure 2 As shown, the present invention discloses a method for controlling an elevator traction motor 1 based on temperature monitoring results. The method for controlling an elevator traction motor 1 based on temperature monitoring results is implemented based on a monitoring system for an elevator traction motor 1 based on temperature monitoring results. The monitoring system for an elevator traction motor 1 based on temperature monitoring results comprises: a first temperature detection device, a second temperature detection device 7, a first temperature processing circuit, a second temperature processing circuit, a first controller, a first remote communication module, a second controller and a second remote communication module. The first temperature detection device is installed at a traction wheel 2 in an elevator. The first temperature detection device is used to detect a temperature T1 of the traction wheel 2 in an elevator. The second temperature detection device 7 is installed at an elevator traction motor 1. The second temperature detection device 7 is used to detect a temperature T2 of the traction motor 1 in an elevator. The output end of the first temperature detection device is connected to an input end of the first controller through a first temperature processing circuit. The first controller is connected to the second controller through a first remote communication module. The output end of the second temperature detection device 7 is connected to an input end of the second controller through a second temperature processing circuit. The second controller is connected to a main control box in an elevator through a second remote communication module. The method for controlling the operation of the elevator traction motor 1 based on temperature monitoring results comprises the following steps: S1, obtaining the real-time temperature T1 of the traction wheel 2 through a first temperature detection device, and obtaining the real-time temperature T2 of the traction motor 1 through a second temperature detection device 7; S2, jointly controlling the operation of the traction motor 1 in the elevator according to the real-time temperature T1 of the traction wheel 2 and the real-time temperature T2 of the traction motor 1.

[0024] The first temperature detection device includes: a first temperature sensor 51, a detection roller 52, a lifting frame 53, a base 54 and a lifting spring 55. The base 54 is installed at the bottom of the traction sheave 2, and the lifting frame 53 is installed on the base 54. The lifting frame 53 can be lifted and lowered relative to the base 54. A lifting spring 55 is installed between the lifting frame 53 and the base 54. A rotatable detection roller 52 is installed on the lifting frame 53. The detection roller 52 is used to keep in close contact with the traction sheave 2 under the elastic force of the lifting spring 55. The top of the traction sheave 2 is the first temperature sensor 51 in the elevator. The first temperature sensor 51 is used to detect the temperature of the traction sheave 2 by detecting the temperature of the detection roller 52 in contact with the traction sheave 2. Since the wire rope 3 is passed around the top of the traction wheel 2 and the traction wheel 2 is always in a rotating process, the detection involves the contact between the detection roller 52 and the traction wheel 2, and the detection roller 52 and the traction wheel 2 are in line contact to ensure a large contact, so that the temperature of the traction wheel 2 can be transferred to the detection roller 52. The first temperature sensor 51 detects the temperature inside the detection roller 52 to reflect the temperature of the traction wheel 2. This ensures that the traction wheel 2 and the wire rope 3 can extend and run, and detection can be achieved.

[0025] The lifting frame 53 includes: a lifting base 531, a lifting rod 532 and a guide shaft 532. The lifting rod 532 passes through the base 54 and can be lifted and lowered relative to the base 54. The lifting base 531 is fixed to the top of the lifting rod 532. The lifting base 531 is installed with a guide shaft 532. The guide shaft 532 extends into the detection roller 52. The guide shaft 532 guides the detection roller 52 to rotate. The guide shaft 532 cannot rotate relative to the lifting base 531. The lifting base 531 also cannot rotate relative to the base 54. A detection circuit board 61 is installed on the guide shaft 532. The first temperature sensor 51 is installed on the detection circuit board 61. The detection circuit board 61 is welded with an electric wire 62. The electric wire 62 is used to electrically connect the first temperature sensor 51 with the first temperature processing circuit. The lifting rod 532 passes through the base 54 to guide the lifting frame 53 to rise and fall. The outer wall of the lifting base 531 is in close contact with the base 54, thereby limiting the rotation of the lifting base 531. The lifting base 531 is used to install the detection roller 52.

[0026] The guide shaft 532 includes: a guide section, a rotation-limiting section and a connecting section. The guide section is a conical structure. The guide section passes through the detection roller 52. Both ends of the guide section extend the rotation-limiting section. The rotation-limiting section is a square structure. The rotation-limiting section passes through the lifting base 531. Each rotation-limiting section extends a connecting section on the side away from the guide section. The connecting section is threadedly connected with a nut, and the nut limits the guide shaft 532 from being separated from the lifting base 531. The guide section guides the rotation of the detection roller 52. The rotation-limiting section enables the lifting base 531 to support the entire guide shaft 532. The connecting section is for installing the nut to limit the entire guide shaft 532 from being separated from the lifting base 531. Since the first temperature sensor 51 and the wire 62 need to be installed on the guide shaft 532, it cannot rotate. If it rotates, the wire 62 will be tangled or separated from the first temperature sensor 51 after rotation, resulting in the first temperature sensor 51 being unstable after installation. Therefore, the entire guide shaft 532 is set to be unable to rotate relative to the lifting base 531, and the lifting base 531 is also limited to be unable to rotate relative to the base 54.

[0027] The side wall of the guide section is recessed to form an installation groove, in which the detection circuit board 61 is installed. The rotation limiting section and the connecting section are both provided with a passing groove, through which the power line 62 passes.

[0028] A displacement detection device is installed on the base 54, and the displacement detection device is used to detect the distance d between the lifting frame 53 and the base 54. In the present application, the detection roller 52 needs to contact the traction wheel 2 for heat transfer, and the lifting spring 55 is the key to keep the detection roller 52 in contact with the traction wheel 2. When the lifting spring 55 is used for a long time, it is inevitable that the elasticity will be lost, and the detection roller 52 cannot contact the traction wheel 2. Therefore, it is necessary to detect the distance d between the lifting frame 53 and the base 54 to determine whether the lifting spring 55 fails. After the lifting spring 55 fails, other detection judgments will fail, so this detection is required.

[0029] Step S2 includes the following steps: S21, judging whether d is always greater than d0 in the period T before the current moment, T and d0 are both set values, if yes, then proceed to step S22; if not, then output the judgment conclusion that the top height spring 55 is damaged and proceed to step S23; S22, judging whether both the first condition and the second condition are met, if one condition is not met, then output the judgment conclusion that the traction motor 1 and the traction wheel 2 in the elevator traction main machine have both been over-run, issue a command to stop the traction motor 1, and proceed to step S23; if all conditions are met, then output the judgment conclusion that the elevator traction main machine is running normally and proceed to step S23; the first condition is: T1 is less than T10, T10 is the set value; the second condition is: T2 is less than T20, T20 is the set value; S23, end. Step S21 is to detect whether the top height spring 55 fails. When the top height spring 55 fails, there is no need for subsequent judgment.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results, characterized in that: The control operation method of the elevator traction motor (1) based on the temperature monitoring result is implemented based on the monitoring system of the elevator traction motor (1) based on the temperature monitoring result. The elevator traction motor (1) monitoring system based on temperature monitoring results comprises: a first temperature detection device, a second temperature detection device (7), a first temperature processing circuit, a second temperature processing circuit, a first controller, a first remote communication module, a second controller and a second remote communication module, wherein the first temperature detection device is installed at the traction wheel (2) in the elevator, and the first temperature detection device is used to detect the temperature T1 of the traction wheel (2) in the elevator, the second temperature detection device (7) is installed at the traction motor (1) in the elevator, and the second temperature detection device (7) is used to detect the temperature T2 of the traction motor (1) in the elevator, the output end of the first temperature detection device is connected to the input end of the first controller through the first temperature processing circuit, the first controller is connected to the second controller through the first remote communication module, the output end of the second temperature detection device (7) is connected to the input end of the second controller through the second temperature processing circuit, and the second controller is connected to the main control box in the elevator through the second remote communication module; The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results comprises the following steps: S1, obtaining the real-time temperature T1 of the traction wheel (2) through a first temperature detection device, and obtaining the real-time temperature T2 of the traction motor (1) through a second temperature detection device (7); S2, jointly controlling the operation of the traction motor (1) in the elevator according to the real-time temperature T1 of the traction sheave (2) and the real-time temperature T2 of the traction motor (1).

2. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 1, characterized in that: The first temperature detection device comprises: a first temperature sensor (51), a detection roller (52), a lifting frame (53), a base (54) and a lifting spring (55). The base (54) is installed at the bottom of the traction sheave (2). The lifting frame (53) is installed on the base (54). The lifting frame (53) can be lifted and lowered relative to the base (54). A lifting spring (55) is installed between the lifting frame (53) and the base (54). A rotatable detection roller (52) is installed on the lifting frame (53). The detection roller (52) is used to keep in close contact with the traction sheave (2) under the elastic force of the lifting spring (55). The top of the traction sheave (2) is provided with a first temperature sensor (51) in the elevator. The first temperature sensor (51) is used to detect the temperature of the traction sheave (2) by detecting the temperature of the detection roller (52) in contact with the traction sheave (2).

3. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 2, characterized in that: The lifting frame (53) comprises: a lifting base (531), a lifting rod (532) and a guide shaft (532). The lifting rod (532) passes through the base (54). The lifting rod (532) can be lifted relative to the base (54). The lifting base (531) is fixed to the top of the lifting rod (532). The lifting base (531) is installed with a guide shaft (532). The guide shaft (532) extends into the detection roller (52). The guide shaft (532) guides the detection roller (52) to rotate. The guide shaft (532) cannot rotate relative to the lifting base (531). The lifting base (531) also cannot rotate relative to the base (54). A detection circuit board (61) is installed on the guide shaft (532). A first temperature sensor (51) is installed on the detection circuit board (61). A wire (62) is welded on the detection circuit board (61). The wire (62) is used to electrically connect the first temperature sensor (51) with the first temperature processing circuit.

4. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 3, characterized in that: The guide shaft (532) comprises: a guide section, a rotation limiting section and a connecting section. The guide section is a conical structure. The guide section passes through the detection roller (52). Both ends of the guide section extend the rotation limiting section. The rotation limiting section is a square structure. The rotation limiting section passes through the lifting base (531). Each rotation limiting section extends from the side of the guide section away from the guide section. The connecting section is threadedly connected to a nut. The nut limits the guide shaft (532) from being separated from the lifting base (531).

5. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 4, characterized in that: The side wall of the guide section is recessed to form an installation groove, in which a detection circuit board (61) is installed. The rotation limiting section and the connection section are both provided with an outlet groove, through which a power line (62) is passed.

6. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 2, characterized in that: A displacement detection device is installed on the base (54), and the displacement detection device is used to detect the distance d between the lifting frame (53) and the base (54).

7. The method for controlling the operation of an elevator traction motor (1) based on temperature monitoring results according to claim 6, characterized in that: Step S2 includes the following steps: S21, judging whether d is always greater than d0 in the period T before the current moment, T and d0 are both set values, if yes, proceeding to step S22; if no, outputting the judgment conclusion that the lifting spring (55) is damaged and proceeding to step S23; S22, judging whether the first condition and the second condition are both met. If one of the conditions is not met, outputting a judgment conclusion that the traction motor (1) and the traction wheel (2) in the elevator traction main machine have both been over-operated, issuing a command to stop the traction motor (1), and proceeding to step S23; if all the conditions are met, outputting a judgment conclusion that the elevator traction main machine is operating normally and proceeding to step S23; the first condition is: T1 is less than T10, T10 is a set value; the second condition is: T2 is less than T20, T20 is a set value; S23, end.

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