CN216997166U - Real-time detection mechanism for position of brake arm on elevator traction machine - Google Patents
Real-time detection mechanism for position of brake arm on elevator traction machine Download PDFInfo
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- CN216997166U CN216997166U CN202220681675.7U CN202220681675U CN216997166U CN 216997166 U CN216997166 U CN 216997166U CN 202220681675 U CN202220681675 U CN 202220681675U CN 216997166 U CN216997166 U CN 216997166U
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Abstract
The application relates to a real-time detection mechanism for the position of a brake arm on an elevator tractor, which belongs to the technical field of elevators, and the detection mechanism is arranged on the tractor and is used for detecting whether a brake is abnormal or not; the pressure sensor is arranged on the inner wall of the contracting brake arm facing the traction sheave; the distance sensor is arranged at one end of the band-type brake arm far away from the base; the data processing module is respectively connected with the pressure sensor and the distance sensor; the control assembly is connected with the data processing module and used for controlling the car to stop when the detection mechanism detects that the brake is abnormal. This application has the effect that improves the safety check accuracy degree of stopper.
Description
Technical Field
The application relates to the technical field of elevators, in particular to a real-time detection mechanism for the position of a brake arm on an elevator traction machine.
Background
The brake is one of the frequently-acting safety parts of the elevator, which can stop the rotation of the traction machine without power supply and effectively stop the elevator car, and whether the elevator can safely run is closely related to the working condition of the brake.
For a gearless traction machine occupying a mainstream market at present, an existing brake only detects the opening or closing state of a contracting brake arm, and once a fault occurs, if a foreign matter is clamped into the contracting brake arm, the contracting brake arm is not in the opening state or the closing state and cannot be detected, so that the phenomena of top rushing, bottom upset, car sliding, even shearing and the like of a car can be caused. Therefore, it is particularly important to enhance the safety check of the elevator brake.
SUMMERY OF THE UTILITY MODEL
In order to improve the safety verification accuracy of stopper, this application provides a real-time detection mechanism of band-type brake arm position on the elevator hauler.
The application provides a real-time detection mechanism of band-type brake arm position on elevator hauler adopts following technical scheme:
a real-time detection mechanism for the position of a contracting brake arm on an elevator tractor is arranged on the tractor and used for detecting whether a brake is abnormal or not, the tractor comprises a base and a traction wheel, the brake comprises a pair of contracting brake arms arranged at two ends of the base and a control assembly used for controlling a car to run or stop, and the detection mechanism comprises a pressure sensor, a distance sensor and a data processing module;
the pressure sensor is arranged on the inner wall of the contracting brake arm facing the traction sheave and is used for detecting whether the contracting brake arm is attached to the traction sheave or not and outputting an electric signal;
the distance sensor is arranged at one end of the contracting brake arm, which is far away from the base, and is used for detecting the position of the contracting brake arm and outputting a distance detection signal;
the data processing module is respectively connected with the pressure sensor and the distance sensor and is used for: judging whether the contracting brake arm is attached to the traction wheel or not according to an electric signal, judging an ideal working state of the contracting brake arm according to a distance detection signal, wherein the ideal working state comprises an ideal closed state and an ideal open state, and outputting a first alarm signal when the contracting brake arm is attached to the traction wheel and the contracting brake arm is in the ideal open state, or outputting a second alarm signal when the contracting brake arm is not attached to the traction wheel and the contracting brake arm is in the ideal closed state;
the control assembly is connected with the data processing module and used for controlling the car to stop when the first alarm signal or the second alarm signal is received.
By adopting the technical scheme, the pressure sensor is used for detecting the actual closing state and the actual opening state of the contracting brake arm, the distance measuring sensor is used for acquiring the theoretical closing state and the theoretical opening state of the contracting brake arm, and the processor is used for judging whether the actual closing state and the theoretical closing state of the contracting brake arm are consistent or not, or whether the actual opening state and the theoretical closing state of the contracting brake arm are consistent or not, and if the actual closing state and the theoretical closing state are inconsistent, the brake is judged to be abnormal. Through actual operating condition and the theoretical operating condition of contrast band-type brake arm for when the structure of band-type brake arm takes place deformation, the quick unusual condition that will expose, thereby improved the safety check accuracy degree of accuracy of stopper.
Optionally, a plurality of mounting grooves are formed in the inner wall, facing the traction sheave, of the contracting brake arm, the mounting grooves are used for mounting the pressure sensor, and the mounting grooves are arranged along the circumferential direction of the traction sheave.
Through adopting above-mentioned technical scheme, increased the laminating area who detects contracting brake arm and driving sheave, further improved the safety check-up degree of accuracy of stopper.
Optionally, a rubber pad is arranged at the notch of the mounting groove, and the pressure sensor is abutted to the traction sheave through the rubber pad.
By adopting the technical scheme, when the band-type brake arm is attached to the traction wheel, the pressure sensor is prevented from being directly contacted with the traction wheel, the abrasion strength of the traction wheel to the pressure sensor is further reduced, and the service life of the pressure sensor is prolonged.
Optionally, a support plate is arranged on one side of the traction sheave, which is away from the base, the support plate is located between the pair of contracting brake arms, a sliding groove is formed in the support plate, the sliding groove penetrates through two ends of the support plate, and a screw rod is arranged in the sliding groove;
through holes matched with the screws are formed in the two contracting brake arms, and two ends of each screw extend towards the through holes to penetrate through the two contracting brake arms;
the two ends of the screw rod are respectively provided with a nut, the nuts are in threaded connection with the screw rod, and an elastic piece is sleeved on the screw rod between the nuts and the contracting brake arms.
By adopting the technical scheme, when the two contracting brake arms in one pair are in an opening state, the distances between the two contracting brake arms and the traction wheel are the same, so that the accuracy of the detection result of the pressure sensor is ensured.
Optionally, both ends of the screw rod close to the nut are provided with mounting brackets, and the mounting brackets are used for mounting the distance sensor.
By adopting the technical scheme, the stability of the distance sensor is improved, and the accuracy of the detection result of the distance sensor is guaranteed.
Optionally, the installing support includes connecting plate and mounting panel, threaded hole is seted up to the one end of connecting plate, the connecting plate passes through threaded hole cover is established on the screw rod, the connecting plate is kept away from the one end of screw rod with the one end of mounting panel is connected, the mounting panel level sets up, the mounting panel with distance sensor fixed connection.
Optionally, the mounting plate is bonded or screwed to the distance sensor.
Optionally, one end of each of the two contracting brake arms, which is far away from the base, is provided with an electromagnetic guide rod;
a supporting column is arranged on the surface of the supporting plate, which is far away from the traction sheave, and an electromagnet is arranged at one end of the supporting column, which is far away from the supporting plate;
the electromagnet is mutually exclusive with the electromagnetic guide rod when being electrified, and the electromagnet is mutually attracted with the electromagnetic guide rod when being powered off.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps of detecting an actual closing state and an actual opening state of a contracting brake arm by a pressure sensor, acquiring a theoretical closing state and a theoretical opening state of the contracting brake arm by a distance measuring sensor, judging whether the actual closing state of the contracting brake arm is consistent with the theoretical closing state or not by a processor, or judging whether the actual opening state of the contracting brake arm is consistent with the theoretical closing state or not, and judging that a brake is abnormal if the actual closing state and the theoretical opening state are inconsistent. By comparing the actual working state with the theoretical working state of the contracting brake arm, the abnormal condition is quickly exposed when the structure of the contracting brake arm deforms, so that the safety checking accuracy of the brake is improved;
2. through seting up a plurality of mounting grooves to the increase detects the laminating area of band-type brake arm and driving sheave, and then has improved the safety check-up degree of accuracy of stopper.
Drawings
Fig. 1 is a schematic view of an application scenario of the present application.
Fig. 2 is a schematic diagram of a mechanism for detecting a position of a band-type brake arm on a traction machine in real time according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a detection mechanism according to an embodiment of the present application.
Description of reference numerals: 100. a detection mechanism; 110. mounting grooves; 120. a first pressure sensor; 130. a second pressure sensor; 141. a connecting plate; 142. mounting a plate; 150. a first distance sensor; 160. a second distance sensor; 170. a data processing module; 200. a traction machine; 210. an engine; 220. a machine base; 230. a traction sheave; 300. a brake; 310. a first contracting brake arm; 320. a second contracting brake arm; 330. a control component; 340. a support plate; 350. a screw; 351. a nut; 352. an elastic member; 360. an electromagnet; 370. an electromagnetic guide bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, the present application is applied to an elevator traction machine 200 for controlling a car to stop when an abnormality of a brake 300 is detected. The traction machine 200 includes an engine 210, a machine base 220, and a traction sheave 230. The traction sheave 230 is connected to an output shaft of the motor 210, and the traction sheave 230 in this embodiment is a toothless traction sheave. The base 220 is installed right under the traction sheave 230, and the base 220 is rotatably connected with the traction sheave 230. The brake 300 includes a pair of blocking arms provided at both ends of the frame 220 and a control assembly 330 for controlling the operation or stop of the car. The control assembly 330 is a device or apparatus and combination of devices and apparatuses native to the brake 300 for controlling the stopping of the car.
Referring to fig. 2, in order to distinguish the pair of contracting brake arms, in the present embodiment, the contracting brake arm positioned on the left side of the engine 210 is set as a first contracting brake arm 310, and the contracting brake arm positioned on the right side of the engine 210 is set as a second contracting brake arm 320, with the output shaft of the engine 210 being the front side. In order to detect whether the first contracting brake arm 310 and the second contracting brake arm 320 brake the traction sheave 230 inaccurately or lose the braking function because of deformation, the application provides a real-time detection mechanism for the position of the contracting brake arm on the elevator traction machine.
The embodiment of the application discloses real-time detection mechanism of band-type brake arm position on elevator hauler. Referring to fig. 3, the sensing mechanism 100 includes a pressure sensor, a distance sensor, and a data processing module 170.
Referring to fig. 2, wherein the pressure sensor is provided on an inner wall of the brake arm facing the traction sheave 230. Specifically, the inner walls of the first contracting brake arm 310 and the second contracting brake arm 320 facing the traction sheave 230 are both provided with mounting grooves 110, the pressure sensor is mounted in the mounting groove 110, and the pressure sensor is abutted against the inner wall of the mounting groove 110. In order to reduce the abrasion force of the traction sheave 230 to the first and second pressure sensors 120 and 130, a rubber pad is provided at the notch of the mounting groove 110, and the pressure sensor abuts against the traction sheave 230 through the rubber pad.
In this embodiment, a pressure sensor located on the first contracting brake arm 310 is set as the first pressure sensor 120, and the first pressure sensor 120 is used for detecting whether the first contracting brake arm 310 is attached to the traction sheave 230. In order to improve the accuracy of detecting whether the first contracting brake arm 310 and the traction sheave 230 are attached, a plurality of mounting grooves 110 are formed in the first contracting brake arm 310, and the mounting grooves 110 are arranged along the circumferential direction of the traction sheave 230 so as to increase the attachment area of detecting the first contracting brake arm 310 and the traction sheave 230.
The pressure sensor on the second contracting brake arm 320 is set as the second pressure sensor 130, and the second pressure sensor 130 is used for detecting whether the second contracting brake arm 320 is attached to the traction sheave 230. Similarly, in order to improve the accuracy of detecting whether the second contracting brake arm 320 and the traction sheave 230 are attached, a plurality of mounting grooves 110 are formed in the second contracting brake arm 320, and the mounting grooves 110 are arranged along the circumferential direction of the traction sheave 230. It should be noted that the mounting grooves 110 formed in the second band-type brake arm 320 are the same in number as the mounting grooves 110 formed in the first band-type brake arm 310, and also ensure that the positions correspond to each other, so that whether the band-type brake arm deforms can be determined according to the detection result of the pressure sensor at each position, and thus the safety verification accuracy of the brake 300 is improved.
When the first contracting brake arm 310 is attached to the traction sheave 230, the traction sheave 230 abuts against the first pressure sensor 120 through the rubber pad, and the first pressure sensor 120 converts the pressure into an electrical signal under the pressure of the traction sheave 230 and outputs the electrical signal. Similarly, when the second contracting brake arm 320 is attached to the traction sheave 230, the traction sheave 230 abuts against the second pressure sensor 130 through a rubber pad, and the second pressure sensor 130 converts the pressure into an electrical signal under the pressure of the traction sheave 230 and outputs the electrical signal. Under the condition that the pair of contracting brake arms normally operate, the first contracting brake arm 310 and the second contracting brake arm 320 are symmetrical about the central axis of the traction wheel 230, and under the condition that the pair of contracting brake arms is abnormal, when the first contracting brake arm 310 deforms or the second contracting brake arm 320 deforms, the pressure reflected by the electric signal output by the first pressure sensor 120 is different from the pressure value reflected by the electric signal output by the second pressure sensor 130 at the opposite position. Therefore, whether one of the pair of contracting brake arms is deformed or not can be judged by comparing the electric signals output by the first pressure sensor 120 and the electric signals output by the second pressure sensor 130 which are opposite to each other.
Whether two contracting brake arms all take place the condition of deformation in order to judge a pair of contracting brake arms, set up distance sensor, the structure of installation distance sensor is the installing support, and the installing support is installed on stopper 300.
Specifically, the brake 300 includes a support plate 340, a screw 350, an electromagnet 360, and an electromagnetic guide rod 370, and a mounting bracket is coupled to the screw 350. Wherein the supporting plate 340 is located at a side of the traction sheave 230 facing away from the base 220, and the supporting plate 340 is located between the first contracting brake arm 310 and the second contracting brake arm 320. The spout has been seted up to backup pad 340, and the spout link up the both ends of backup pad 340, is provided with screw rod 350 in the spout, all sets up the through-hole of adaptation in screw rod 350 on first contracting brake arm 310 and the second contracting brake arm 320, and screw rod 350 one end extends to running through first contracting brake arm 310 towards the through-hole of first contracting brake arm 310, and the screw rod 350 other end extends to running through second contracting brake arm 320 towards the through-hole of second contracting brake arm 320. Both ends of the screw 350 are provided with nuts 351, and the nuts 351 are in threaded connection with the screw 350. The elastic member 352 is sleeved on the screw 350 of the nut 351 of the first locking arm 310 and the nut 351 close to the first locking arm 310, the same elastic member 352 is sleeved on the screw 350 of the nut 351 of the second locking arm 320 and the nut 351 close to the second locking arm 320, and in this embodiment, the elastic member 352 is a compression spring.
The mounting brackets are provided in two sets, one set of mounting brackets is disposed near the first contracting brake arm 310, and the other set of mounting brackets is disposed near the second contracting brake arm 320. The mounting bracket comprises a connecting plate 141 and a mounting plate 142, a threaded hole is formed in one end of the connecting plate 141, the connecting plate 141 is sleeved on the screw 350 through the threaded hole, one end, far away from the screw 350, of the connecting plate 141 is connected with one end of the mounting plate 142, the mounting plate 142 is horizontally arranged, and the mounting plate 142 is fixedly connected with the distance sensor. In this embodiment, the mounting plate 142 and the distance sensor may be bonded or screwed.
In order to distinguish the distance sensors on the two sets of mounting brackets, the distance sensor close to the first contracting brake arm 310 is set as the first distance sensor 150, and the first distance sensor 150 is used for detecting the position of the first contracting brake arm 310 and outputting a distance detection signal. A distance sensor near the second contracting brake arm 320 is also provided as the second distance sensor 160, and the second distance sensor 160 is used to detect the position of the second contracting brake arm 320 and output a distance detection signal.
The principle of the position change of the first contracting brake arm 310 and the second contracting brake arm 320 is as follows: the ends, far away from the base 220, of the first contracting brake arm 310 and the second contracting brake arm 320 are both provided with electromagnetic guide rods 370, the surface, far away from the traction sheave 230, of the support plate 340 is provided with a support column, the end, far away from the support plate 340, of the support column is provided with an electromagnet 360, two coils independently powered are arranged in the electromagnet 360, and the electromagnetic guide rods 370 and the electromagnet 360 have an electromagnetic effect. Specifically, the electromagnet 360 is mutually exclusive with the electromagnetic guide rod 370 when being powered on, and the electromagnet 360 is attracted with the electromagnetic guide rod 370 when being powered off, so that the positions of the first contracting brake arm 310 and the second contracting brake arm 320 are correspondingly changed along with the powering on or powering off of the electromagnet 360.
Referring to fig. 3, the data processing module 170 is connected to the first pressure sensor 120, the second pressure sensor 130, the first distance sensor 150, and the second distance sensor 160, respectively. The data processing module 170 is a single chip microcomputer. The singlechip is used for:
in the first aspect, the electric signal output by the first pressure sensor 120 and the electric signal output by the second pressure sensor 130 are received, the pressures reflected by the electric signals output by the first pressure sensor 120 and the second pressure sensor 130 located at corresponding positions are compared, and if the pressure values reflected by the electric signals of the first pressure sensor 120 and the second pressure sensor 130 are different, the early warning signal is output.
In the second aspect, when the pressures reflected by the electrical signals output by the first pressure sensor 120 and the second pressure sensor 130 are the same, whether the contracting brake arm is attached to the traction sheave 230 is determined according to the electrical signals, and the pressure reflected by the electrical signals output by the pressure sensors is greater than a value 0 because the pressure sensors receive the pressure of the traction sheave 230 during attachment; when the pressure sensor is not attached, the pressure sensor is not acted by force, so that the pressure reflected by the electric signal output by the pressure sensor is equal to a numerical value of 0. Therefore, the data processing module 170 can determine the actual working state of the contracting brake arm, i.e. the actual closing state or the actual opening state, according to the pressure reflected by the received electric signal. Meanwhile, the single chip microcomputer receives distance detection signals output by the first distance sensor 150 and the second distance sensor 160, and judges an ideal working state of the contracting brake arm according to the distance detection signals. When the electromagnet 360 is electrified, the electromagnet 360 and the electromagnetic guide rod 370 repel each other, and the distance sensor detects that the band-type brake arm gradually approaches, so that the distance reflected by the distance detection signal is the minimum distance, and at the moment, the band-type brake arm is in an open state theoretically, namely an ideal open state; when the electromagnet 360 is powered off, the electromagnet 360 is attracted to the electromagnetic guide rod 370, and the distance sensor detects that the band-type brake arm gradually moves away, so that the distance reflected by the distance detection signal is the maximum distance, and the band-type brake arm is in a closed state theoretically, namely an ideal closed state. And then, outputting an alarm signal when the actual working state of the band-type brake arm is judged to be inconsistent with the theoretical working state. Specifically, a first alarm signal is output when the fact that the band-type brake arm is in the actual closed state and the theoretical open state is judged at the same time, or a second alarm signal is output when the fact that the band-type brake arm is in the actual open state and the theoretical closed state is judged at the same time.
The control component 330 is connected to the data processing module 170, and is configured to alarm when receiving the early warning signal, so that a maintenance worker can timely overhaul the alarm. The control component 330 controls the car to stop when receiving the first alarm signal and the second alarm signal, so as to reduce the probability of safety accidents caused by the fact that the braking requirement cannot be met by the contracting brake arm.
The implementation principle of the real-time detection mechanism for the position of the brake arm on the elevator traction machine is as follows: the pressure sensor detects the actual working state of the contracting brake arm, the distance sensor obtains the theoretical working state of the contracting brake arm, and the data processing module 170 judges whether the actual working state and the theoretical working state of the contracting brake arm are consistent or not according to the detection result of the pressure sensor and the detection result of the distance sensor. This application judges whether the band-type brake arm normally operates through the actual operating condition and the theoretical operating condition who acquire the band-type brake arm simultaneously, if the actual operating condition of band-type brake arm is inconsistent with theoretical operating condition, then thinks the band-type brake arm unusual, stops through control assembly 330 control car this moment.
The foregoing description is only exemplary of the preferred embodiments of the invention and is provided for the purpose of illustrating the general principles of the technology. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. A real-time detection mechanism for the position of a band-type brake arm on an elevator traction machine, the detection mechanism (100) is installed on the traction machine (200) and is used for detecting whether a brake (300) is abnormal or not, the traction machine (200) comprises a base (220) and a traction sheave (230), the brake (300) comprises a pair of band-type brake arms arranged at two ends of the base (220) and a control component (330) used for controlling the running or stopping of a car, and the real-time detection mechanism is characterized in that: the detection mechanism (100) comprises a pressure sensor, a distance sensor and a data processing module (170);
the pressure sensor is arranged on the inner wall of the contracting brake arm facing the traction sheave (230) and used for detecting whether the contracting brake arm is attached to the traction sheave (230) or not and outputting an electric signal;
the distance sensor is arranged at one end, far away from the base (220), of the contracting brake arm and used for detecting the position of the contracting brake arm and outputting a distance detection signal;
the data processing module (170) is respectively connected to the pressure sensor and the distance sensor, and is configured to: judging whether the contracting brake arm is attached to the traction wheel (230) or not according to an electric signal, judging an ideal working state of the contracting brake arm according to a distance detection signal, wherein the ideal working state comprises an ideal closed state and an ideal open state, and outputting a first alarm signal when the contracting brake arm is attached to the traction wheel (230) and the contracting brake arm is in the ideal open state, or outputting a second alarm signal when the contracting brake arm is not attached to the traction wheel (230) and the contracting brake arm is in the ideal closed state;
the control component (330) is connected with the data processing module (170) and is used for controlling the car to stop when receiving the first alarm signal or the second alarm signal.
2. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 1, characterized in that: the inner wall of the contracting brake arm facing the traction sheave (230) is provided with a plurality of mounting grooves (110), the mounting grooves (110) are used for mounting a pressure sensor, and the mounting grooves (110) are arranged along the circumferential direction of the traction sheave (230).
3. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 2, characterized in that: the notch of the mounting groove (110) is provided with a rubber pad, and the pressure sensor is abutted to the traction sheave (230) through the rubber pad.
4. The mechanism for detecting the position of the band-type brake arm on the elevator traction machine according to claim 1, characterized in that: a supporting plate (340) is arranged on one side, away from the base (220), of the traction sheave (230), the supporting plate (340) is located between the pair of contracting brake arms, a sliding groove is formed in the supporting plate (340), the sliding groove penetrates through two ends of the supporting plate (340), and a screw (350) is arranged in the sliding groove;
through holes matched with the screws (350) are formed in the two contracting brake arms, and two ends of each screw (350) extend towards the through holes to penetrate through the two contracting brake arms;
both ends of the screw rod (350) are provided with nuts (351), the nuts (351) are connected with the screw rod (350) through threads, and an elastic piece (352) is sleeved on the screw rod (350) between the nut (351) and the contracting brake arm.
5. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 4, characterized in that: and mounting brackets are arranged at two ends of the screw rod (350) close to the nut (351) and used for mounting the distance sensor.
6. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 5, characterized in that: the mounting bracket comprises a connecting plate (141) and a mounting plate (142), a threaded hole is formed in one end of the connecting plate (141), the connecting plate (141) is sleeved on the screw rod (350) through the threaded hole, one end, far away from the screw rod (350), of the connecting plate (141) is connected with one end of the mounting plate (142), the mounting plate (142) is horizontally arranged, and the mounting plate (142) is fixedly connected with the distance sensor.
7. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 6, characterized in that: the mounting plate (142) is bonded or screwed to the distance sensor.
8. The mechanism for detecting the position of the brake arm on the elevator traction machine in real time according to claim 4, characterized in that: one ends of the two contracting brake arms, which are far away from the base (220), are provided with electromagnetic guide rods (370);
a supporting column is arranged on the surface of the supporting plate (340) departing from the traction sheave (230), and an electromagnet (360) is arranged at one end of the supporting column departing from the supporting plate (340);
the electromagnet (360) is mutually exclusive with the electromagnetic guide rod (370) when being electrified, and the electromagnet (360) is attracted with the electromagnetic guide rod (370) when being powered off.
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| CN202220681675.7U CN216997166U (en) | 2022-03-25 | 2022-03-25 | Real-time detection mechanism for position of brake arm on elevator traction machine |
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| CN202220681675.7U CN216997166U (en) | 2022-03-25 | 2022-03-25 | Real-time detection mechanism for position of brake arm on elevator traction machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231408A (en) * | 2022-07-20 | 2022-10-25 | 厦门广菱安装工程有限公司 | Traction type elevator maintenance equipment and maintenance method thereof |
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- 2022-03-25 CN CN202220681675.7U patent/CN216997166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231408A (en) * | 2022-07-20 | 2022-10-25 | 厦门广菱安装工程有限公司 | Traction type elevator maintenance equipment and maintenance method thereof |
| CN115231408B (en) * | 2022-07-20 | 2024-04-16 | 厦门广菱安装工程有限公司 | Traction type elevator maintenance equipment and maintenance method thereof |
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