CN109650230B

CN109650230B - Elevator traction system and control method thereof

Info

Publication number: CN109650230B
Application number: CN201811643497.3A
Authority: CN
Inventors: 林汪金
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-12-29
Anticipated expiration: 2038-12-29
Also published as: CN109650230A

Abstract

The invention provides an elevator traction system and a control method thereof. This elevator traction system includes: a machine base; the traction wheel device is arranged on the base; the traction wheel device comprises an outer ring wheel and an inner ring wheel which are coaxially arranged, and the radius of the outer ring wheel is larger than that of the inner ring wheel; and the traction power source is mechanically connected with the outer ring wheel. Because the traction wheel device adopts the ring wheels with different diameters to drive the lift car to do lifting motion, the driving force of the lift car is reduced, so that the waste of electric energy is reduced, and the cost of the elevator is reduced. Meanwhile, for the car with large load, a counterweight structure can be cancelled, so that unnecessary driving electric energy of the elevator can be reduced, the cost of the elevator is further reduced, and the running performance of the elevator is optimized.

Description

Elevator traction system and control method thereof

Technical Field

The invention relates to the technical field of elevator equipment, in particular to an elevator traction system and a control method thereof.

Background

Along with the continuous development of society, multifunctional commercial and residential buildings are more and more, and as a vertical transportation means, an elevator is more and more widely applied in large-capacity specifications, so that the elevator becomes an indispensable transportation means in life and work of people.

At present, the counterweight of the elevator is generally the sum of the empty weight and the rated half load weight of the elevator car, and a guide rail bracket matched with the counterweight. When the elevator is a cargo lift such as an automobile, the mechanical part functioning as a counterweight, particularly an elevator at a low landing, is in a deceleration state immediately after the running speed reaches the rated speed. At the moment, the traction motor only has starting and decelerating current, and the energy-saving advantage of constant-speed running current is not provided, so that the waste of electric energy is caused, and the cost of the elevator is increased.

Disclosure of Invention

Therefore, it is necessary to provide an elevator traction system and a control method thereof to solve the problem of high cost of the conventional elevator.

The above purpose is realized by the following technical scheme:

an elevator traction system comprising:

a machine base;

the traction wheel device is arranged on the base; the traction wheel device comprises an outer ring wheel and an inner ring wheel which are coaxially arranged, and the radius of the outer ring wheel is larger than that of the inner ring wheel; and

and the traction power source is mechanically connected with the outer ring wheel.

In one embodiment, the traction power source comprises a traction motor, and the traction motor is arranged on the outer ring wheel; the traction power source comprises a permanent magnet and an electromagnetic driving magnetic core, the permanent magnet is arranged on the outer ring wheel, the electromagnetic driving magnetic core is arranged on the base, and the electromagnetic driving magnetic core and the permanent magnet are matched to drive the outer ring wheel to rotate;

alternatively, the traction motor is provided independently of the traction wheel device.

In one embodiment, the traction wheel device further comprises a rotary disc, the rotary disc is coaxially arranged with the outer ring wheel, and a rotary encoder is arranged on the rotary disc;

the elevator traction system further comprises a detection device, wherein the detection device comprises a first detection element, the first detection element is arranged on the machine base, and the first detection element is used for detecting the coding information of the rotary encoder.

In one embodiment, the elevator traction system further comprises a traction device for connecting the inner ring wheel with the car, the traction device having a continuous code hole;

the detection device further comprises a second detection element, the second detection element is arranged on the base and is used for detecting the coding information of the coding hole;

the traction device is a flat type traction device.

In one of the embodiments, the elevator traction system further comprises an electromechanically triggered clamping device, an anti-jump device, and a triggering device;

the electromechanical triggering and clamping device is connected with the traction device and the lift car and used for clamping the traction device, the triggering device is arranged at one end or two ends of the traction device, and the triggering device can trigger the electromechanical triggering and clamping device to act;

the anti-bouncing device is in mechanical elastic contact with the traction device; the detection device further comprises a third detection element, and the third detection element is arranged on the anti-bouncing device and is used for detecting the amplitude of the traction device.

In one embodiment, the detection device further comprises a laser generator, a fourth detection element and a plurality of reflective mirrors, wherein the laser generator and the fourth detection element are arranged on the base, and the reflective mirrors are respectively arranged on the car and the hoistway and used for refracting laser emitted by the laser generator to the fourth detection element.

In one embodiment, the elevator traction system further comprises a control device, wherein the control device comprises a coded information processing circuit which is electrically connected with the first detection element, the second detection element, the third detection element and the fourth detection element respectively and used for receiving detection information.

An elevator traction system control method for controlling an elevator traction system, the control method comprising the steps of:

selecting the diameters of an outer ring wheel and an inner ring wheel of the traction wheel device according to the speed parameter of the traction power source and the size parameter of the lift car;

and applying the driving force of the traction power source to the outer ring wheel according to the diameter relation of the outer ring wheel and the inner ring wheel.

In one embodiment, the control method further includes the steps of:

detecting the height information of the lift car through the matching of the first detection element and the rotary encoder, calculating the running height information of the lift car, and updating and keeping the running height information in a power-off protection memory in real time;

the position of the traction device is detected through the matching of a second detection element and a coding hole of the traction device;

detecting the amplitude of the anti-tripping device through a third detection element, and outputting an uplink analog signal to the traction power source by a control device when the amplitude of the anti-tripping device exceeds a preset amplitude, so as to automatically adapt to the mechanical connection between the car and the traction wheel device;

and detecting the upper limit position and the lower limit position of the lift car running to the shaft through the cooperation of a fourth detection element and the laser generator.

In one embodiment, the step of detecting that the car moves to the upper limit position and the lower limit position of the hoistway by the cooperation of the fourth detection element and the laser generator further comprises:

when the elevator is debugged or maintained, the car is controlled to slowly run to the upper limit position and the lower limit position of the shaft;

controlling the laser generator to emit laser, and adjusting the angle between the hoistway and a reflector of the car to refract the laser to a fourth detection element;

reading the upper and lower limit position information of the well, and updating and storing the upper and lower limit position information in the power-off protection memory;

the step of detecting the position of the traction device through the cooperation of the second detection element and the coding hole of the traction device further comprises the following steps:

controlling the lift car to slowly move to each leveling position in sequence according to the information of the upper limit position and the lower limit position;

and setting position information of each landing position in the shaft by setting a switch, and updating and keeping the position information in the power-off protection memory.

In one embodiment, the control method further includes the steps of:

when the elevator is in an idle state, the elevator car is controlled to automatically slowly fall to a buffer at the bottom of the hoistway;

when the elevator exits the idle state, controlling the elevator car to slowly run upwards from the buffer;

the lower limit position information of the well is corrected and then the well is recovered to use;

and when the elevator runs for a preset number of times, controlling the car to automatically move up and down at a low speed, reacquiring the upper and lower limit position information of the hoistway, and confirming the landing position information.

In one embodiment, the elevator traction system control method further comprises the steps of:

when the control device detects that the lift car is out of control, the control device outputs a trigger signal to trigger the electromechanical trigger clamping device to act to clamp the traction device;

when the control device and the car are out of control, the trigger device on the traction device triggers the electromechanical trigger clamping device to act to clamp the traction device.

After the technical scheme is adopted, the invention at least has the following technical effects:

according to the elevator traction system and the control method thereof, when the elevator traction system operates, the traction power source drives the outer ring wheel of the traction wheel device to rotate, the outer ring wheel and the inner ring wheel are coaxially arranged, so that the inner ring wheel can be driven to synchronously rotate, and the lift car can be driven to do lifting motion when the inner ring wheel rotates. Because the traction wheel device adopts the ring wheels with different diameters to drive the lift car to do lifting motion, the driving force of the lift car is reduced, and the waste of electric energy is reduced. The problem that present elevator is with high costs of effectual solution to reduce elevator cost. Meanwhile, for the car with large load, a counterweight structure can be cancelled, so that unnecessary driving electric energy of the elevator can be reduced, the cost of the elevator is further reduced, and the running performance of the elevator is optimized.

Drawings

Fig. 1 a-1 c are schematic views of an elevator traction system in conjunction with a car in accordance with an embodiment of the present invention;

fig. 2 a-2 b are schematic structural views of the elevator traction system shown in fig. 1;

fig. 3 is a side view schematic of the elevator traction system of fig. 2a and 2 b;

fig. 4 a-4 b are schematic structural views of an electromechanical triggering holding device and an anti-bouncing device in the elevator traction system shown in fig. 3;

FIGS. 5 a-5 b are schematic structural views of the electro-mechanically triggered clamping device before and after actuation;

5 c-5 d are schematic views of the lever movement after the electro-mechanical trigger clamping device is actuated and during reset.

Wherein:

100-an elevator traction system;

110-a stand;

111-a guide wheel;

120-a traction wheel arrangement;

121-outer ring wheel;

122-inner ring wheel;

123-a turntable;

130-a traction power source;

131-a permanent magnet;

132-an electromagnetically driven magnetic core;

141-a first detection element;

142-a second detection element;

143-a third detection element;

150-a traction device;

151-code holes;

160-an electromechanically triggered clamping device;

170-anti-jump device;

181-sliding support bar;

182-a spring;

183-linkage;

184-sliding lock catches;

185-an electromagnetic lock;

186-brake pads;

187-a locking hook;

188-a retaining ring;

189-a pry bar;

190-prying the hole;

191-a rolling pulley;

200-car.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the elevator traction system and the control method thereof according to the present invention are further described in detail by embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 a-3, the present invention provides an elevator traction system 100. The elevator traction system 100 is used to control the lifting operation of the car 200. The elevator traction system 100 of the present invention can reduce the driving force of the car 200 to reduce the waste of electric energy. Meanwhile, for the car 200 with large load, a counterweight structure can be omitted, so that unnecessary driving electric energy of the elevator can be reduced, the cost of the elevator is further reduced, and the running performance of the elevator is optimized.

In one embodiment, the elevator traction system 100 includes a machine base 110, a traction sheave assembly 120, and a traction power source 130. The traction wheel device 120 is disposed on the base 110. The traction wheel device 120 includes an outer ring wheel 121 and an inner ring wheel 122 coaxially disposed, and a radius of the outer ring wheel 121 is greater than a radius of the inner ring wheel 122. The traction power source 130 is mechanically connected to the outer sheave 121.

The machine base 110 serves as a load bearing member for mounting most of the components of the elevator traction system 100. The traction power source 130 is a power source of the entire elevator traction system 100 to output a driving force to drive the car 200 to ascend and descend. The traction wheel assembly 120 is mechanically mounted to the frame 110 and the traction power source 130 is mechanically coupled to the traction wheel assembly 120, while the traction wheel assembly 120 is also coupled to the car 200. Thus, the traction sheave device can drive the traction sheave device 120 to rotate, and the traction sheave device 120 drives the car 200 to move up and down.

Further, the outer ring wheel 121 is provided coaxially with the inner ring wheel 122. Illustratively, the outer ring wheel 121 and the inner ring wheel 122 are mounted on the same shaft core, and the outer ring wheel 121 can rotate while the inner ring wheel 122 can be driven to rotate synchronously by the shaft core. Also, the traction wheel device 120 provides a driving wheel to the car 200 by cooperation of the outer ring wheel 121 and the inner ring wheel 122. Specifically, the diameter of the outer ring wheel 121 is larger than that of the inner ring wheel 122, and a lever principle in mechanics is applied to form a lever ratio relationship between the outer ring wheel 121 and the inner ring wheel 122. When the driving force of the traction power source 130 is applied to the outer ring gear 121, the speed of the inner ring gear 122 can be reduced according to the lever ratio, and the driving force of the inner ring gear 122 to the car 200 can be increased.

In this way, the traction power source 130 can output a small driving force, and the driving force is amplified by the lever ratio relationship between the outer ring wheel 121 and the inner ring wheel 122 to meet the driving force required for the lifting of the car 200. Therefore, the elevator traction system 100 can eliminate mechanical elements of centering structures such as a counterweight frame, a counterweight block, a centering guide rail, a guide rail bracket and the like, so that unnecessary driving electric energy of the elevator is reduced, the cost of the elevator is reduced, and the running performance of the elevator is optimized. Meanwhile, when the car 200 runs, the driving force of the traction wheel device 120 on the acceleration section, the deceleration section and the small-load uniform-speed section of the car 200 can be greatly reduced, the consumption of electric energy is reduced, and the elevator cost is reduced.

It is understood that the elevator traction system 100 further includes a control device through which automatic control of the operation of the car 200 is achieved. Illustratively, the control device is a controller, a CPU, or the like.

In one embodiment, the traction power source 130 includes a traction motor. That is, a traction motor is employed as a power source of the elevator traction system 100. Alternatively, the traction motor is provided to the outer ring wheel 121. That is, the traction motor is integrally constructed with the traction wheel device 120. Illustratively, the traction power source 130 comprises a permanent magnet 131 and an electromagnetic driving core 132, the permanent magnet 131 is disposed on the outer ring wheel 121, the electromagnetic driving core 132 is disposed on the base 110, and the electromagnetic driving core 132 cooperates with the permanent magnet 131 to drive the outer ring wheel 121 to rotate, as shown in fig. 1a, 2a and 2 b. The electromagnetic driving core 132 cooperates with the permanent magnet 131 to generate a rotational force, which drives the outer ring wheel 121 to rotate.

It will be appreciated that amplifying the driving force using a lever ratio relationship may reduce the driving force of the outer race wheel 121. In this case, the number of electromagnetically driven cores 132 provided in the housing 110 can be significantly reduced. This also ensures a demand for the output of the driving force from the car 200. Moreover, as the circumference of outer race wheel 121 increases, the number of electromagnetically driven cores 132 can be reduced adaptively.

Of course, in another embodiment, the traction motors are provided independently of the traction wheel assemblies 120. That is, the traction motor is externally arranged and independent, and at this time, the traction motor and the outer ring wheel 121 are two parts, see fig. 1b and fig. 1 c. At this time, the traction motor is provided to the base 110, and the traction motor is a high-speed traction motor. The traction motor is mechanically connected with the outer ring wheel 121 so as to drive the outer ring wheel 121 to rotate by the traction motor. For example, the traction motor may be driven to the outer ring wheel 121 of the traction wheel device 120 by a chain, gear or belt type, which is simpler to realize.

Referring to fig. 2a to 3, in an embodiment, the traction wheel device 120 further includes a turntable 123, the turntable 123 is disposed coaxially with the outer ring wheel 121, and the turntable 123 has a rotary encoder thereon. The elevator traction system 100 further includes a detecting device including a first detecting member 141, the first detecting member 141 is disposed on the frame 110, and the first detecting member 141 is used to detect the encoded information of the rotary encoder.

The turntable 123 is also mounted on the axle core of the outer ring wheel 121. Thus, the outer ring wheel 121 rotates to drive the turntable 123 to rotate synchronously, and the outer ring wheel 121 rotates one turn, and the turntable 123 also rotates one turn correspondingly. Since the turntable 123 has a rotary encoder thereon, the rotary encoder records rotation data of the turntable 123 and outputs encoded information when the turntable 123 rotates, and at the same time, the first detecting element 141 can detect the encoded information of the rotary encoder to determine the output rotation speed of the traction motor.

In one embodiment, the elevator traction system 100 further includes a traction device 150, the traction device 150 is used to connect the inner ring 122 with the car 200, and the traction device 150 has a continuous code hole 151. The detecting device further includes a second detecting element 142, the second detecting element 142 is disposed on the base 110, and the second detecting element 142 is used for detecting the encoded information of the encoding hole 151.

The inner ring wheel 122 is connected to the car 200 via a traction device 150. Optionally, the inner ring wheel 122 of the traction wheel assembly 120 mechanically secures one end of the traction device 150 via an embedded arrangement. Moreover, the traction device 150 is a flat type traction device. Illustratively, the pulling device 150 comprises a steel band, and further, the pulling device 150 comprises a flat steel band. One end of the steel band is inserted into the outer ring wheel 121 of the traction wheel device 120, and a fixing pin is inserted so that one end of the traction device 150 is fixed to the outer ring wheel 121. Further, the traction device 150 includes at least two steel belts, one of which has a code hole, so as to ensure that the traction device 150 reliably connects the traction wheel device 120 and the car 200. Furthermore, the steel strip has a succession of coding holes 151. The second detecting element 142 can detect one of the obtained encoded information. The control device sets the upper limit and the lower limit manually, sets the leveling coding holes 151 manually, and detects the height of the lift car 200 in the well continuously after the position coding information, so that the lift can run normally. The second detecting element 142 can detect the code information of the code hole 151 to determine the position information of the car 200 in the hoistway.

It should be noted that, when the traction motor is not externally installed independently, the traction wheel device 120 fixes one end of the traction device 150 for tight winding. After the other end of the traction wheel device 120 is fixed, the dynamic balance of the traction motor is adjusted. After commissioning, the car is moved to the installation site, the end of the traction device 150 is unfastened to release the other end of the traction device 150, and the other end of the traction device 150 is installed and fixed on the top of the car 200 or the top of the hoistway on site.

Optionally, the traction device 150 further includes a guide wheel 111, the guide wheel 111 is disposed on the top of the car 200, and the traction device 150 between the outer ring wheel and the traction motor passes through the guide wheel 111. In this way, the draft gear 150 can be made more labor efficient.

Referring to fig. 3-5 d, in one embodiment, the elevator traction system 100 further includes an electromechanically triggered clamping device 160, an anti-jump device 170, and a triggering device. The electromechanical trigger clamping device 160 is connected with the traction device 150 and the car 200 and used for clamping the traction device 150, and the trigger device is arranged at one end or two ends of the traction device 150 and can trigger the electromechanical trigger clamping device 160 to act. The anti-jump device 170 is in mechanical resilient contact with the draft gear 150. The detecting device further comprises a third detecting element 143, and the third detecting element 143 is disposed on the anti-jump device 170 and is used for detecting the amplitude of the traction device 150. It can be understood that the specific structures of the electromechanical trigger clamping device 160, the anti-jump device 170 and the trigger device are all the prior art, and are not described in detail herein. Also, the elevator traction system 100 of the present invention integrates the electro-mechanically triggered holding fixture 160 with the anti-jump device 170.

Fig. 5a and 5b are schematic views of the electromechanically triggered clamping device 160 before and after its actuation. Referring to fig. 5a, before the electromechanically triggered gripping device 160 is activated, the electromechanically triggered gripping device 160 is in contact with the traction device 150 via the rolling pulley 191. When the electro-mechanically triggered gripping device 160 is actuated, see fig. 5b, the rolling pulley 191 extends and bears against the traction device 150, effecting a gripping operation of the traction device 150.

Fig. 5c is a schematic diagram showing the position of the lever 189 after the operation of the electro-mechanical device 160, and fig. 5d is a schematic diagram showing the lever 189 of the electro-mechanical device 160 being reset. When the electro-mechanically activated clamping device 160 is actuated, a pry bar 189 may be inserted into a retainer 188 and a pry aperture 190 in the housing 110 to pry the slide strut 181 holding the brake plate 186 rearwardly. The compression spring 182 causes the sliding rod 181 to push until the sliding latch 184 catches a latch 187 on the sliding rod 181 under the tension of the spring 182, thereby completing the reset of the electro-mechanically actuated clamping device 160. The linkage 183 and the electromagnetic lock 185 can pull the sliding lock 184 to actuate the electro-mechanical trigger clamping device 160.

The bottom of the frame 110 and the innermost end of the traction device 150 are provided with trigger devices with a width wider than that of the other trigger devices. The trace 183 of the electromechanically triggered clamping device 160 is disposed on one side of the traction device 150. When the elevator is out of control, including the triggering of the electromagnetic lock 185 and the failure, the traction device 150 pulls out the innermost end, i.e. the triggering device, and the width is pulling the linkage rod 183 to move downwards, so that the electromechanical trigger clamping device 160 acts.

When the protection of the UCMP (unified car movement protection) and the speed limiter on the running of the elevator fails, the control device outputs a trigger signal to electrically trigger the electromechanical trigger clamping device 160 to act. At this time, the electromechanically triggered holding device 160 can hold the car 200 and the traction device 150, so as to prevent the car 200 from going down and ensure the safety of the car 200. When the control device of the elevator and the car 200 are completely out of control, the trigger device on the traction device 150 finally triggers the electromechanical trigger clamping device 160 to act, and at the moment, the electromechanical trigger clamping device 160 can clamp the car 200 to ensure the safety of the car 200.

It can be appreciated that either the electrically triggered holding device 160 or the mechanically triggered holding device 160 can actuate the electromechanically triggered holding device 160 to hold the car 200, thereby ensuring reliable operation of the car 200 and improving safety.

The anti-bouncing device 170 is used for preventing bouncing of the car 200 during movement, and ensuring smooth running of the car 200. It will be appreciated that the anti-bounce device 170 provides energy absorption by the spring for vibrations of the draft gear 150 during operation. The third detecting element 143 detects the amplitude of the traction device 150 in real time. When the third detecting element 143 detects that the amplitude of the traction device 150 exceeds the limit value, the control device outputs an uplink analog control signal to the traction power source 130, i.e., the traction motor, to automatically adapt the mechanical connection between the car 200 and the traction wheel device 120.

In an embodiment, the detection apparatus further includes a laser generator, a fourth detection element and a plurality of reflective mirrors, the laser generator and the fourth detection element are disposed on the base 110, and the plurality of reflective mirrors are respectively disposed on the car 200 and the hoistway, and are configured to refract the laser generated by the laser generator and refract the laser to the fourth detection element.

Illustratively, the number of mirrors is three. Two of the mirrors are disposed at the upper and lower ends of the hoistway, and the other mirror is disposed at the side of the car 200. When the elevator is debugged or maintained, an engineer moves the car 200 to upper and lower limit positions of the hoistway by slowly moving the car 200. At this time, the laser generator on the base 110 emits laser, which is refracted at the side of the car 200, and the engineer adjusts the angle of the reflective mirror at the side of the car 200 inside the car 200, so that the laser passes through the reflective mirror of the hoistway and is refracted to the fourth detection element, thereby realizing the detection of the upper and lower limit position information of the hoistway.

In one embodiment, the control device includes a coded information processing circuit electrically connected to the first detecting element 141, the second detecting element 142, the third detecting element 143, and the fourth detecting element, respectively, for receiving the detection information. Illustratively, the encoded information processing circuit includes an input processing circuit, an encoding operation processing circuit, an output signal circuit, a power-off holding memory, and a setting switch. The first detecting element 141, the second detecting element 142, the third detecting element 143, and the fourth detecting element include, but are not limited to, a photo-detection switch, and may be other structures capable of detecting.

The first detecting element 141 may be electrically connected to the encoded information processing circuit of the control apparatus to transmit the encoded information of the rotary encoder to the encoded information processing circuit. In this way, the coded information processing circuit can calculate the output rotation speed information of the traction motor according to the coded information and update and store the information in the power failure holding memory.

The fourth detecting element can be electrically connected with the coded information processing circuit of the control device so as to update and store the detected upper and lower limit position information of the shaft into the power-off holding memory.

The third detecting element 143 may be electrically connected to the encoded information processing circuit of the control device to transmit the detected amplitude of the traction device 150 to the encoded information processing circuit. When the third detecting element 143 detects that the amplitude of the traction device 150 exceeds the limit value, the output signal circuit outputs an uplink analog control signal to the traction motor to automatically adapt the mechanical connection between the car 200 and the traction wheel device 120.

The second detecting element 142 can be electrically connected to the encoded information processing circuit of the control device to transmit the encoded information of the encoded holes 151 of the traction device 150 to the encoded information processing circuit. In this way, the control device can detect the running information of the car 200 in the hoistway, calculate the running height of the car 200, and update the holding re-disconnection holder.

The components having the function of detecting the hoistway information are all moved to the elevator hoisting system 100, and the control device can obtain information such as the position, the leveling, the deceleration, and the limit of the car 200 by detecting the first detecting element 141, the second detecting element 142, the third detecting element 143, and the fourth detecting element, without affecting the detection of the hoistway information. Therefore, the elevator shaft does not need to be provided with scales such as a magnetic isolation plate, a magnetic isolation plate bracket, a car roof detection element, a forced deceleration switch, a limit switch and a switch mounting bracket, and cables for electrically connecting the switches, the detection element and the shaft are reduced. This can further reduce the cost of the elevator.

The invention also provides a control method of the elevator traction system, which is used for controlling the elevator traction system 100 and comprises the following steps:

selecting the diameters of the outer ring wheel 121 and the inner ring wheel 122 of the traction wheel device 120 according to the speed parameter of the traction power source 130 and the size parameter of the car 200;

the driving force of the traction power source 130 is applied to the outer ring gear 121 according to the diameter relationship of the outer ring gear 121 and the inner ring gear 122.

According to the speed parameter of the traction motor and the size parameter of the car 200, the diameters of the outer ring wheel 121 and the inner ring wheel 122 can be selected to be better, and further a better lever ratio relation is obtained. Since the diameter of the outer sheave 121 is greater than that of the inner sheave 122, when the driving force of the traction power source 130 is applied to the outer sheave 121, the speed of the inner sheave 122 can be reduced by a lever ratio, thereby achieving an increase in the driving force of the inner sheave 122 to the car 200.

In one embodiment, the control method further comprises the steps of:

the rotation speed of the traction power source is detected through the cooperation of the first detection element 141 and the rotary encoder;

the height of the car 200 is detected through the matching of the second detection element 142 and the coding hole 151 of the traction device 150, the running height information of the car 200 is calculated, and the running height information is updated and kept in the power-off protection memory in real time;

the amplitude of the anti-jump device 170 is detected by the third detecting element 143, and when the amplitude of the anti-jump device 170 exceeds a preset amplitude, the control device outputs an uplink analog signal to the traction power source 130 to automatically adapt to the mechanical connection between the car 200 and the traction wheel device 120;

the running of the car 200 to the upper and lower limit positions of the hoistway is detected by the cooperation of the fourth detection element and the laser generator.

After the first detecting element 141 is matched with the rotary encoder, the encoded information of the rotary encoder can be transmitted to the encoded information processing circuit. In this way, the coded information processing circuit can calculate the rotation speed of the traction motor according to the coded information and update and store the rotation speed in the power failure holding memory. It can be understood that, in the operation control of the car 200 by the control device, the first detection element 141 detects the data of the turntable 123 to control the operation of the traction motor in real time, and the reliability is high.

After the second detecting element 141 is matched with the coding hole 151 of the traction device 150, the coded information can be transmitted to the coded information processing circuit. In this way, the coded information processing circuit can calculate the travel height information of the car 200 based on the coded information and update and store the information in the power-off holding memory.

When the elevator is debugged or maintained, an engineer moves the car 200 to upper and lower limit positions of the hoistway by slowly moving the car 200. At this time, the laser generator on the base 110 emits laser, which is refracted at the side of the car 200, and the engineer adjusts the angle of the reflective mirror at the side of the car 200 inside the car 200, so that the laser passes through the reflective mirror of the hoistway and is refracted to the fourth detection element, thereby realizing the detection of the upper and lower limit position information of the hoistway. The fourth detecting element may detect upper and lower limit position information of the hoistway, and after the upper and lower limit positions are detected, the leveling positions need to be set again.

The third detecting element 143 detects the amplitude of the traction device 150 in real time. When the third detecting element 143 detects that the amplitude of the traction device 150 exceeds the limit value, the output signal circuit of the control device outputs an uplink analog control signal to the traction power source 130, i.e. the traction motor, so as to automatically adapt to the mechanical connection between the car 200 and the traction wheel device 120, thereby ensuring the stable operation of the car 200.

In an embodiment, the step of detecting that the car 200 moves to the upper and lower limit positions of the hoistway by the cooperation of the fourth detecting element and the laser generator further comprises:

when the elevator is debugged or maintained, the car 200 is controlled to slowly run to the upper limit position and the lower limit position of the shaft;

controlling the laser generator to emit laser, and adjusting the angle between the hoistway and the reflector of the car 200 to refract the laser to the fourth detection element;

reading the upper and lower limit position information of the shaft, and updating and storing the information in a power-off protection memory;

controlling the lift car 200 to slowly move to each leveling position in sequence according to the information of the upper limit position and the lower limit position;

the position information of each leveling position in the shaft is set through the setting switch, and the leveling position is updated and kept in the power-off protection memory.

When the elevator is debugged or maintained, an engineer moves the car 200 to upper and lower limit positions of the hoistway by slowly moving the car 200. At this time, the laser generator on the base 110 emits laser, which is refracted at the side of the car 200, and the engineer adjusts the angle of the reflective mirror at the side of the car 200 inside the car 200, so that the laser passes through the reflective mirror of the hoistway and is refracted to the fourth detection element, thereby realizing the detection of the upper and lower limit position information of the hoistway.

Meanwhile, according to the upper and lower limit position information of the shaft, the car 200 is slowly moved to each leveling position in sequence, and the engineer sets the position information of each leveling information in the shaft on the control device by setting a switch, sets shaft height data of each floor, and provides shaft reference data for the control device. And meanwhile, updating and keeping the reference data of each leveling position of the shaft in a power-off keeping memory.

In one embodiment, the control method further comprises the steps of:

when the elevator is in an idle state, the elevator car 200 is controlled to automatically slowly fall to the buffer at the bottom of the hoistway;

when the elevator exits the idle state, the elevator car 200 is controlled to slowly move upwards from the buffer;

the lower limit position information of the well is corrected and then the well is recovered for use;

when the elevator runs for a preset number of times, the elevator car 200 is controlled to move up and down slowly and automatically, the upper limit position information and the lower limit position information of the shaft are obtained again, and the position information of each leveling layer is confirmed.

When the car 200 is in an idle state, the control device causes the car 200 to automatically slowly drop onto a mechanical buffer at the bottom of the hoistway, which reduces static losses of the traction device 150. When the control device exits the idle state, the car 200 slowly moves upwards from the buffer, and normal use is recovered when the floor leveling position is reached after primary shaft lower limit information is checked. After the elevator runs for the set times, the control device enables the elevator car 200 to run up and down slowly and automatically once, and the information of the upper limit position and the lower limit position of the hoistway is obtained again. Similarly, the elevator needs to confirm the height data of each floor of the hoistway once by manpower regularly to ensure the use safety of the elevator.

In one embodiment, the control method further comprises the steps of:

when the control device detects that the cage 200 is out of control, the control device outputs a trigger signal to trigger the electromechanical trigger clamping device 160 to act to clamp the traction device 150;

when the control device and the car 200 are out of control, the trigger device on the traction device 150 triggers the electromechanical trigger clamping device 160 to act to clamp the traction device 150.

When the UCMP and the speed limiter fail to protect the running of the elevator, the control device outputs a trigger signal to electrically trigger the electromechanical trigger clamping device 160 to act. At this time, the electromechanically triggered holding device 160 can hold the car 200 and the traction device 150, so as to prevent the car 200 from going down and ensure the safety of the car 200. When the control device of the elevator and the car 200 are completely out of control, the trigger device on the traction device 150 finally triggers the electromechanical trigger clamping device 160 to act, and at the moment, the electromechanical trigger clamping device 160 can clamp the car 200 to ensure the safety of the car 200.

The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An elevator traction system, comprising:

a machine base;

the traction wheel device is arranged on the base; the traction wheel device comprises an outer ring wheel and an inner ring wheel which are coaxially arranged, and the radius of the outer ring wheel is larger than that of the inner ring wheel;

the traction power source is mechanically connected with the outer ring wheel;

the traction device is used for connecting the inner ring wheel with a car;

the electromechanical trigger clamping device is connected with the traction device and the lift car and used for clamping the traction device;

the trigger device is arranged at one end or two ends of the traction device and can trigger the electromechanical trigger clamping device to act so as to stop the downward movement of the lift car; and

detection device, detection device includes laser generator, fourth detecting element and three reflector, three reflector is first reflector, second reflector and third reflector respectively, first reflector sets up in the upper end of well, the second reflector sets up in the lower extreme of well, the third reflector sets up in the lateral part of car, fourth detecting element with laser generator set up in the frame, the laser of laser generator transmission can pass through second reflector, first reflector and third reflector refraction extremely fourth detecting element.

2. The elevator traction system of claim 1, wherein the traction power source comprises a traction motor disposed to the outer ring wheel; the traction power source comprises a permanent magnet and an electromagnetic driving magnetic core, the permanent magnet is arranged on the outer ring wheel, the electromagnetic driving magnetic core is arranged on the base, and the electromagnetic driving magnetic core and the permanent magnet are matched to drive the outer ring wheel to rotate;

3. The elevator traction system of claim 1 wherein the traction sheave assembly further comprises a turntable disposed coaxially with the outer sheave, the turntable having a rotary encoder thereon;

the detection device comprises a first detection element, the first detection element is arranged on the base, and the first detection element is used for detecting the coding information of the rotary encoder.

4. The elevator traction system of claim 3 wherein the traction device has a continuous code hole;

the traction device is a flat type traction device.

5. The elevator traction system of claim 4 further comprising an anti-bounce device; the anti-bouncing device is in mechanical elastic contact with the traction device; the detection device further comprises a third detection element, and the third detection element is arranged on the anti-bouncing device and is used for detecting the amplitude of the traction device.

6. The elevator hoisting system of claim 5 further comprising a control device comprising a coded information processing circuit electrically connected to the first, second, third, and fourth sensing elements, respectively, for receiving the sensing information.

7. An elevator traction system control method for controlling an elevator traction system according to any one of claims 1 to 6, comprising the steps of:

selecting the diameters of the outer ring wheel and the inner ring wheel of the traction wheel device according to the speed parameter of the traction power source and the size parameter of the lift car;

applying the driving force of the traction power source to the outer ring wheel according to the diameter relation of the outer ring wheel and the inner ring wheel;

when the control device detects that the car is out of control, the control device outputs a trigger signal to trigger the electromechanical trigger clamping device to act to clamp the traction device, so that the car stops moving downwards;

when the control device and the car are out of control, a trigger device on the traction device triggers the electromechanical trigger clamping device to act to clamp the traction device, so that the car stops moving downwards;

and reading the information of the upper limit position and the lower limit position of the well, and updating and storing the information in a power-off protection memory.

8. The elevator traction system control method according to claim 7, further comprising the steps of:

detecting the rotating speed of the traction power source through the matching of a first detection element and a rotary encoder;

detecting the height information of the lift car through the matching of a second detection element and a coding hole of the traction device, calculating the running height information of the lift car, and updating and keeping the running height information in a power-off protection memory in real time;

9. The elevator traction system control method according to claim 8, wherein the step of detecting that the car is moved to the upper and lower limit positions of the hoistway by cooperation of the fourth detection member and the laser generator further comprises:

10. The elevator traction system control method according to claim 8, further comprising the steps of:

and when the elevator runs for a preset number of times, controlling the car to automatically move up and down at a low speed, reacquiring the upper and lower limit position information of the hoistway, and confirming the position information of each leveling layer.