CN215364354U - Device for dynamically testing braking distance of elevator system - Google Patents
Device for dynamically testing braking distance of elevator system Download PDFInfo
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- CN215364354U CN215364354U CN202121687025.5U CN202121687025U CN215364354U CN 215364354 U CN215364354 U CN 215364354U CN 202121687025 U CN202121687025 U CN 202121687025U CN 215364354 U CN215364354 U CN 215364354U
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Abstract
The utility model discloses a device for dynamically testing the braking distance of an elevator system, which comprises a tester host and a ranging module, wherein the ranging module is in communication connection with the tester host, the tester host comprises an MCU module and an interface unit, the MCU module is electrically connected with the interface unit, the interface unit is electrically connected with an elevator control cabinet, the ranging module is in communication connection with the interface unit, the transmitting end of the ranging module faces one side surface of the movement direction of a lift car, and the direction of the transmitting end of the ranging module is parallel to the movement direction of the lift car. The utility model has the following beneficial effects: the influence of the stretching of the steel wire rope on the accuracy of the test result is effectively reduced, and the elevator braking distance detection device has the advantage of high elevator braking distance detection precision. The MCU module can accurately acquire the time and the distance when the car starts to brake, thereby reducing the measurement error in manual calculation and measurement and further improving the detection precision of the elevator brake distance.
Description
Technical Field
The utility model relates to the technical field of elevator braking distance testing devices, in particular to a device for dynamically testing the braking distance of an elevator system.
Background
Elevators are devices used to transport passengers and goods. The common elevator comprises a lift car, an elevator main machine, a braking device and an elevator control cabinet, wherein the lift car is used for carrying passengers and goods, the elevator main machine and the braking device are used for driving the lift car to accelerate and decelerate, and the elevator control cabinet is used for controlling the elevator main machine and the braking device to realize the function of transporting the passengers and the goods through the lift car.
In order to make the elevator car stop at a specified position accurately in the working process, the elevator main machine and the braking device are required to be capable of accurately driving the elevator car to decelerate, so that the braking of an elevator system is required to be tested during the installation, maintenance and maintenance of the elevator. The existing elevator system braking force test mostly controls an elevator to stop by hands of detection personnel, and then the specific braking distance is detected by observing with naked eyes or measuring the braking distance manually to judge the braking force of the elevator system. The manual operation deviation is large in manual measurement, so that the manual operation is inaccurate and unreliable.
In order to improve the detection precision of elevator braking distance, chinese utility model patent with publication number CN205192775U discloses an elevator braking distance detection device, including set up at the epaxial photoelectric encoder of rotation with elevator wire rope matched with, the high frequency pulse signal recording circuit who links to each other with photoelectric encoder's output and the MCU that links to each other with high frequency pulse signal recording circuit output, the supporting clock circuit and the supply circuit of being equipped with of MCU. The photoelectric encoder is driven to move in the movement process of the elevator steel wire rope, so that the movement distance of the elevator steel wire rope is detected through the photoelectric encoder, and the movement distance of the elevator car is obtained. However, because the length of the elevator steel wire rope is long, when the received tension is large, the elevator steel wire rope is often stretched to a certain degree, so that the deviation between the motion of the photoelectric encoder and the motion of the car is caused, and the problem of inaccurate detection of the braking distance of the elevator is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a device for dynamically testing the braking distance of an elevator system, which comprises a tester host and a distance measuring module.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
the utility model provides a device of dynamic test elevator system braking distance, includes tester host computer and range finding module, range finding module and tester host computer communication connection, the tester host computer includes MCU module and interface unit, MCU module and interface unit electric connection, interface unit and elevator switch board electric connection, range finding module and interface unit communication connection, the transmitting terminal of range finding module is towards a side of car direction of motion, the orientation of the transmitting terminal of range finding module is parallel with the direction of motion of car. By such an arrangement: the influence of the stretching of the steel wire rope on the accuracy of the test result is effectively reduced, and the elevator braking distance detection device has the advantage of high elevator braking distance detection precision. The MCU module can accurately acquire the time and the distance when the car starts to brake, thereby reducing the measurement error in manual calculation and measurement and further improving the detection precision of the elevator brake distance.
Preferably, the interface unit comprises a relay and a wiring socket, the relay is electrically connected with the MCU module, and the wiring socket is electrically connected with the elevator control cabinet, the distance measuring module and the MCU module respectively. By such an arrangement: the function of realizing the circuit and pulling out and inserting only removes the tester host computer to the elevartor shaft top when needing to test elevator braking distance, can carry out the braking distance test to the elevator of difference respectively, reaches the effect that reduces test cost and make things convenient for the test.
Preferably, the interface unit further includes a general input/output port and a communication port, which are disposed on the MCU module, the relay is electrically connected to the general input/output port, and the ranging module is electrically connected to the communication port. By such an arrangement: the MCU module can respectively send and receive data to the elevator control cabinet and the ranging module.
Preferably, the communication port adopts an RS232 transmission protocol, and the ranging module is electrically connected to the connection jack through an RS232 data line. By such an arrangement: the MCU module can collect the distance data of the distance measuring module.
Preferably, the MCU module is electrically connected with a control panel. By such an arrangement: the tester can conveniently read the test data, and the effect of convenient and convenient testing is achieved.
Preferably, the tester host further comprises a case, the MCU module is fixedly installed in the case, and the wiring socket and the control panel are both installed on the surface of the case. By such an arrangement: the MCU module protection device has the advantages of being long in service life and capable of achieving the effects of conveniently connecting the wiring sockets and conveniently using the control panel.
Preferably, the distance measuring module is arranged at the top of the elevator shaft, and the transmitting end of the distance measuring module faces the top of the elevator car. By such an arrangement: the function of measuring the distance between the top of the car and the top of the elevator shaft is realized.
Preferably, the MCU module is NUC 970. By such an arrangement: the functions of data calculation and data transmission of the elevator ranging test can be completed by the MCU module.
Preferably, the ranging module is a laser ranging unit or a radar wave ranging unit. By such an arrangement: the influence of the stretching of the steel wire rope on the measurement result is reduced, and the effect of improving the measurement precision is achieved.
Preferably, the ranging module adopts a laser ranging unit with the model number of SK-Z-30. By such an arrangement: the function of guaranteeing the measuring accuracy can be achieved.
Compared with the prior art, the utility model has the beneficial technical effects that:
1. the distance between the car and the top of the elevator shaft is directly measured through the distance measuring module, so that the position distance of the car can be accurately measured, the influence of the stretching of the steel wire rope on the accuracy of a test result is effectively reduced, and the elevator braking distance detection device has the advantage of high elevator braking distance detection precision.
2. When the MCU module collects distance data, the control signal is sent to the elevator control cabinet through the MCU module, so that the MCU module can accurately acquire the time and the distance when the car starts to brake, the measurement error in manual calculation and measurement can be reduced, and the detection precision of the elevator braking distance is further improved.
Drawings
Fig. 1 is a schematic structural view of a ranging module, an elevator shaft and a car in an embodiment of the utility model;
fig. 2 is a schematic circuit diagram of the ranging module, the elevator control cabinet and the tester main unit in the embodiment of the utility model.
Wherein, the technical characteristics that each reference numeral refers to are as follows:
11. a tester host; 12. an MCU module; 13. a general purpose input-output port; 14. a communication port; 15. a relay; 16. a wiring socket; 17. a control panel; 18. an interface unit; 19. a chassis; 21. a distance measurement module; 22. an RS232 data line; 31. an elevator shaft; 32. a car; 33. an elevator main machine; 34. an elevator control cabinet; 35. an elevator counterweight; 36. a steel cord.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
Referring to fig. 1, the elevator comprises an elevator shaft 31, a car 32, an elevator counterweight 35, a main elevator machine 33, a braking device and an elevator control cabinet 34, wherein the car 32 is vertically and slidably connected with the elevator shaft 31, the main elevator machine 33 is wound with a steel wire rope 36, two ends of the steel wire rope are fixedly connected with the car 32 and the elevator counterweight 35 respectively, the braking device is installed at the main elevator machine 33 and is used for braking the car 32, the elevator control cabinet 34 is electrically connected with the main elevator machine 33 and the braking device respectively, and the elevator control cabinet 34 is used for controlling the main elevator machine 33 and the braking device to start and stop, so that the function of controlling and driving the car 32 to move in the elevator shaft 31 is realized.
Referring to fig. 1 and 2, the device for dynamically testing the braking distance of the elevator system comprises a tester main machine 11 and a distance measuring module 21, wherein the distance measuring module 21 is in communication connection with the tester main machine 11. The tester host 11 includes an MCU module 12 and an interface unit 18, the MCU module 12 and the interface unit 18 are electrically connected to the interface unit 18, and the MCU module 12 and the interface unit 18 include a relay 15, a connection jack 16, a gpio port 13 disposed on the MCU module 12, and a communication port 14 disposed on the MCU module 12, the relay 15 is electrically connected to the gpio port 13, and the ranging module 21 is electrically connected to the communication port 14. The relay 15 is electrically connected with the wiring jack 16, the relay 15 is electrically connected with the MCU module 12, and the wiring jack 16 is electrically connected with the elevator control cabinet 34, the ranging module 21 and the MCU module 12 respectively.
The tester main unit 11 further comprises a case 19, the MCU module 12 is fixedly installed in the case 19, and the connection jack 16 and the control panel 17 are installed on the surface of the case 19. Ranging module 21 sets up in elevartor shaft 31 top, and ranging module 21's laser emission end is towards car 32 top, and ranging module 21's laser emission end is towards the below. The laser emitting end of the distance measuring module 21 faces one side surface of the moving direction of the car 32, and the laser emitting end of the distance measuring module 21 faces in parallel with the moving direction of the car 32.
The model of the MCU module 12 is NUC970, and a control program is preset in the MCU module 12, so that the MCU module 12 can automatically complete data calculation and data transmission of the elevator ranging test according to the preset program. The communication port 14 adopts an RS232 transmission protocol, and the ranging module 21 is electrically connected to the connection jack 16 through an RS232 data line 22.
The MCU module 12 is electrically connected to a control panel 17. The control panel 17 is provided with a test starting button and a test stopping button, the test starting button is used for manually starting the elevator braking distance test, and after the motor manually starts the button, the control panel 17 sends a control instruction to the MCU module 12; the stop test button is used for manual interrupt testing after the test is started. The nominal speed and the range zero are set by the control panel 17. The rated speed is that the elevator car 32 runs at the rated speed during the test, and the speed error is not more than 5 percent of the rated speed; the distance measurement zero setting is used for adjusting the distance offset of the laser module installation position. The distance measuring module 21 is a laser distance measuring unit or a radar distance measuring unit, in this embodiment, the distance measuring module 21 adopts a laser distance measuring unit with the model number of SK-Z-30, and the distance measuring frequency of the laser distance measuring unit is 100 Hz.
The control panel 17 is provided with a touch screen, and the control panel 17 is used for displaying data and sending control instructions to the MCU module 12. The control panel 17 is configured to receive test data sent by the MCU module 12, and display the test data, where the test data includes current distance information, current speed information, actual braking distance information, maximum braking distance information, minimum braking distance information, braking time information, average braking deceleration information, braking start distance information, and braking stop distance information. The current distance information is the distance between the currently measured car 32 and the ranging module 21; the current speed information is the current measured car 32 movement speed; the actual braking distance information is the distance from the actual braking to the actual braking of the elevator during the test; the maximum braking distance information is the maximum braking distance which meets the standard when the automobile runs at the rated speed; the minimum braking distance information is the minimum braking distance which meets the standard when the vehicle runs at the rated speed; the braking time information is the time length from the actual braking to the braking of the elevator in the test; the average braking deceleration information is the average deceleration of the elevator from braking to braking actually during the test; the start-stop distance information is the distance between the car 32 and the ranging module 21 at the moment when the elevator starts to brake during the test; the braking distance information is the distance between the car 32 and the ranging module 21 after the elevator is braked and stopped during the test.
The specific working process is as follows:
after the elevator control cabinet 34 is operated to control the car 32 to run at the rated speed, a control command is sent to the MCU module 12 through the control panel 17. After receiving the control command sent by the control panel 17, the MCU module 12 first determines whether the moving speed of the car 32 meets the rated speed range, i.e., the speed error of the car 32 does not exceed 5% of the rated speed. If not, the test fails and ends, and waits for restarting the test; if so, a control signal is immediately sent to the elevator control cabinet 34 via the interface unit 18 and the braking distance test is started and at the same time the calculation of the braking time is started. The distance measuring module 21 is provided with a transmitting unit and a receiving unit, laser is transmitted by the transmitting unit to vertically irradiate the top of the elevator car 32 from the top of the elevator shaft 31, and then the laser is reflected to the receiving unit from the top of the elevator, and the distance between the top of the elevator car 32 and the top of the elevator shaft 31 is calculated by calculating the time difference between the laser transmitted by the transmitting unit and the light received by the receiving unit, so that distance data is obtained. After the MCU module 12 collects the distance data of the distance measuring module 21, the braking distance, speed and acceleration of the car 32 are calculated according to the distance and time of the car 32, so as to realize the function of detecting the braking distance of the elevator car 32. After the car 32 is completely braked and stopped, the test is finished, the MCU module 12 sends the test data to the control panel 17, and the test data is displayed on the control panel 17, so that the tester can read the data through the control panel 17 conveniently.
The embodiment has the following advantages:
The distance between the car 32 and the top of the elevator shaft 31 is directly measured through the distance measuring module 21, so that the position distance of the car 32 can be accurately measured, the influence of the stretching of the steel wire rope 36 on the accuracy of a test result is effectively reduced, and the elevator braking distance detection device has the advantage of high elevator braking distance detection precision.
When the MCU module 12 collects distance data, a control signal is sent to the elevator control cabinet 34 through the MCU module 12, so that the MCU module 12 can accurately acquire the time and the distance when the car 32 starts to brake, thereby reducing the measurement error in manual calculation and measurement and further improving the detection precision of the elevator brake distance. And the ranging module 21 can also dynamically measure the distance of the car 32 during braking.
The connection jack 16 is connected with the elevator control cabinet 34 to realize the transmission of signals between the MCU module 12 and the elevator control cabinet 34, so that the MCU module 12 can control the elevator control cabinet 34. Through wiring socket 16's setting, can realize the function that the circuit was pulled out and is inserted, and then can remove this dynamic test elevator system braking distance's device and carry out the braking distance test to the elevator of difference, play the effect of facilitating the use, need not all install tester host computer 11 on each elevator, only remove tester host computer 11 to elevartor shaft 31 top when needing test elevator braking distance, and set up ranging module 21, can carry out the braking distance test to the elevator of difference respectively, reach the effect that reduces testing cost.
The function of sending and receiving data to and from the elevator control cabinet 34 and the ranging module 21 respectively by the MCU module 12 is realized through the general input/output port 13 and the communication port 14 on the MCU module 12.
Through the RS232 data line 22 between the ranging module 21 and the connection jack 16, the ranging module 21 and the communication port 14 can realize an RS232 transmission protocol, so that the MCU module 12 can collect distance data of the ranging module 21.
The MCU module 12 sends the test data to the control panel 17, and the test data is displayed through the control panel 17, so that a tester can conveniently read the test data, and the effect of conveniently and conveniently testing is achieved.
The case 19 is utilized to protect the MCU module 12 and the relay 15, the MCU module 12 is prevented from being damaged by collision, the effect of protecting the MCU module 12 is achieved, and the advantage of long service life is achieved. The arrangement of the connection jack 16 and the control panel 17 at the surface of the cabinet 19 can play a role of facilitating the connection of the connection jack 16 and the use of the control panel 17.
By arranging the distance measuring module 21 above the car 32, when the car 32 moves vertically, the distance measuring module 21 can detect the distance between the car 32 and the top of the elevator shaft 31, and the function of measuring the distance between the top of the car 32 and the top of the elevator shaft 31 is realized.
Set up ranging module 21 into laser ranging unit or radar wave ranging unit to can realize ranging module 21 to the contactless measurement of car 32 distance, reduce wire rope 36's tensile influence to the measuring result, play the effect that improves measurement accuracy. The ranging module 21 adopts an SK-Z-30 laser ranging unit, and can play a role in ensuring the measurement precision.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.
Claims (10)
1. The device for dynamically testing the braking distance of the elevator system comprises a tester host (11) and a ranging module (21), wherein the ranging module (21) is in communication connection with the tester host (11), and is characterized in that: tester host computer (11) includes MCU module (12) and interface unit (18), MCU module (12) and interface unit (18) electric connection, interface unit (18) and elevator switch board (34) electric connection, ranging module (21) and interface unit (18) communication connection, the transmitting terminal of ranging module (21) is towards car (32) top, the orientation of the transmitting terminal of ranging module (21) is parallel with the direction of motion of car (32).
2. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 1, wherein: the interface unit (18) comprises a relay (15) and a wiring socket (16), the relay (15) is electrically connected with the MCU module (12), and the wiring socket (16) is electrically connected with the elevator control cabinet (34), the distance measuring module (21) and the MCU module (12) respectively.
3. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 2, wherein: the interface unit (18) further comprises a general input/output port (13) and a communication port (14) which are arranged on the MCU module (12), the relay (15) is electrically connected to the general input/output port (13), and the ranging module (21) is electrically connected to the communication port (14).
4. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 3, wherein: the communication port (14) adopts an RS232 transmission protocol, and the ranging module (21) is electrically connected with the wiring socket (16) through an RS232 data line (22).
5. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 3, wherein: the MCU module (12) is electrically connected with a control panel (17).
6. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 5, wherein: the tester host (11) further comprises a case (19), the MCU module (12) is fixedly installed in the case (19), and the wiring socket (16) and the control panel (17) are installed on the surface of the case (19).
7. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 1, wherein: the distance measuring module (21) is arranged at the top of the elevator shaft (31), and the transmitting end of the distance measuring module (21) faces the top of the elevator car (32).
8. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 1, wherein: the MCU module (12) is NUC 970.
9. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 1, wherein: the distance measuring module (21) is a laser distance measuring unit or a radar wave distance measuring unit.
10. The apparatus for dynamically testing the stopping distance of an elevator system according to claim 9, wherein: the ranging module (21) adopts a laser ranging unit with the model number of SK-Z-30.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121687025.5U CN215364354U (en) | 2021-07-23 | 2021-07-23 | Device for dynamically testing braking distance of elevator system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121687025.5U CN215364354U (en) | 2021-07-23 | 2021-07-23 | Device for dynamically testing braking distance of elevator system |
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| CN215364354U true CN215364354U (en) | 2021-12-31 |
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| CN202121687025.5U Active CN215364354U (en) | 2021-07-23 | 2021-07-23 | Device for dynamically testing braking distance of elevator system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942448A (en) * | 2022-07-21 | 2022-08-26 | 北谷电子有限公司 | Test system and test method for braking distance of self-walking aerial work platform |
| CN116773178A (en) * | 2023-08-16 | 2023-09-19 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
-
2021
- 2021-07-23 CN CN202121687025.5U patent/CN215364354U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942448A (en) * | 2022-07-21 | 2022-08-26 | 北谷电子有限公司 | Test system and test method for braking distance of self-walking aerial work platform |
| CN116773178A (en) * | 2023-08-16 | 2023-09-19 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
| CN116773178B (en) * | 2023-08-16 | 2024-01-05 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
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