Device for detecting slippage of steel wire rope of elevator

Abstract

The utility model discloses an elevator steel wire rope slippage detection device, which relates to the field of special equipment and comprises a mounting side plate, a traction wheel is rotatably mounted on one side of the mounting side plate, a limiting frame is fixedly mounted on one side, close to the traction wheel, of the mounting side plate, one end of the traction wheel is rotatably mounted on one side of the limiting frame, and the other end of the traction wheel is rotatably mounted on the other side of the limiting frame. A traction rope is wound on the outer surface of the traction wheel, a measuring mechanism is installed at the lower end of one side of the installation side plate, the measuring mechanism is arranged on one section of the traction rope in a sleeved mode, and a laser velocimeter is fixedly installed in the middle of the limiting frame. And the calibrated slippage can be calculated through the rotating speed of the traction wheel and the transmission speed of the traction rope, measurement and calculation can be accurately conducted no matter how many floors the elevator moves, measurement can be completed in the normal use state, special shutdown measurement is not needed, safe operation of the elevator is guaranteed, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of special equipment, in particular to a detection device for the slip amount of elevator steel ropes. Background Art

[0002] The patent with the publication number CN213536927U provides a measuring device for the slip amount of elevator steel ropes, which includes a support base, a traction sheave, multiple steel ropes, a first speed measuring device and a second speed measuring device. The traction sheave is hinged to the support base, and multiple steel ropes are all wound around the traction sheave. The first speed measuring device is used to measure the angular velocity of the traction sheave. The second speed measuring device includes a first laser displacement sensor, a second laser displacement sensor, a first speed measuring plate and a second speed measuring plate.

[0003] However, the above solution has the following deficiencies. When the elevator starts and stops, slips will occur, so the speed measuring plates on it are easily brought into the interior of the traction sheave, which will cause the speed measuring plates to fall off. Therefore, this device can only be measured by workers when no one is using it, and real-time data cannot be obtained, and the practicability is relatively low.

[0004] Therefore, it is very necessary to propose a detection device for the slip amount of elevator steel ropes to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a detection device for the slip amount of elevator steel ropes to solve the problem that it cannot be used during work.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A detection device for the slip amount of elevator steel ropes, which includes an installation side plate. One side of the installation side plate is rotatably installed with a traction sheave. A limiting frame is fixedly installed on the side of the installation side plate close to the traction sheave. One end of the traction sheave is rotatably installed on one side of the limiting frame. A traction rope is wound on the outer surface of the traction sheave. A measuring mechanism is installed at the lower end of one side of the installation side plate. The measuring mechanism is sleeved on one section of the traction rope. A laser speedometer is fixedly installed in the middle of the limiting frame. A first target plate for cooperating with the installation side plate is fixedly installed on the traction sheave. A camera is fixedly installed on one side of the limiting frame. A light source is fixedly installed on the side of the installation side plate close to the camera.

[0007] Preferably, the measuring mechanism includes a support rod. A first support plate is fixedly installed on one side of the support rod. A second support plate is arranged on the side of the first support plate away from the support rod. Two symmetrical speed measuring rollers are arranged on the opposite sides of the first support plate and the second support plate. The support rod is fixedly installed on the side surface of the installation side plate. A central shaft is fixedly installed in the middle of the speed measuring roller.

[0008] Preferably, sliders are detachably installed at both ends of the central axis, and a plurality of the sliders are all slidably clamped in the middle parts of the corresponding first support plates and second support plates. Spring telescopic rods are fixedly clamped on both sides of the first support plates and the second support plates, and the telescopic ends of the spring telescopic rods are fixedly installed on the side surfaces of the corresponding sliders.

[0009] Preferably, a laser rangefinder is arranged on one side of the second support plate away from the first support plate. The laser rangefinder is fixedly installed on the side surface of one of the sliders. A second target symmetric to itself is arranged on one side of the laser rangefinder. The second target is fixedly installed on the other slider. An encoder is arranged on one side of the first support plate away from the second support plate. The encoder is fixedly installed on one of the sliders. The test end of the encoder penetrates through the slider and is fixedly installed in the middle part of one of the central axes.

[0010] Preferably, a central control housing and a motor are fixedly installed on one side of the installation side plate away from the traction wheel. A first antenna is fixedly installed at the top of the central control housing. The driving end of the motor penetrates through the installation side plate and is fixedly installed in the middle part of the traction wheel.

[0011] Preferably, an AD converter, a comparison module, a central control module, an execution module and a sending module are fixedly installed inside the central control housing. The sending module is wirelessly connected to a portable terminal and a computer terminal.

[0012] Preferably, the portable terminal includes a control body. A display screen is fixedly installed on the upper half section of the control body. Control buttons are fixedly installed on the lower half section of the control body. A second antenna is fixedly installed at the top of the control body.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. The device can monitor the wear amount of the traction rope in real time, and can calculate the calibrated slip amount through the rotation speed of the traction wheel and the transmission speed of the traction rope. It can accurately measure no matter which floor the elevator moves to. The measurement can be completed under normal use conditions without special shutdown measurement, ensuring the safe operation of the elevator and improving safety;

[0015] 2. By setting a camera and a light source, when a fault occurs, a real-time picture can be taken and sent to an external computer terminal, so that the staff can know what specific fault has occurred, so as to take appropriate countermeasures;

[0016] 3. By setting an execution module, the elevator can be automatically stopped when a fault occurs, preventing safety accidents and improving the safety of the device during use;

[0017] 4. By setting up a portable terminal, the device can send signals to nearby staff members by itself. If there are trapped people, a quick response can be obtained, and the elevator can be quickly closed to prevent secondary accidents. Description of the Drawings

[0018] Figure 1 This is a schematic structural diagram of the elevator steel wire rope slippage detection device of the present utility model from one perspective.

[0019] Figure 2 For the present utility model Figure 1 An enlarged view of part A in the present utility model.

[0020] Figure 3 This is a schematic structural diagram of the elevator steel wire rope slippage detection device of the present utility model from another perspective.

[0021] Figure 4 This is a schematic structural diagram of the measuring mechanism in the present utility model.

[0022] Figure 5 This is a schematic structural diagram of the portable terminal in the present utility model.

[0023] Figure 6 This is the working principle diagram of the present utility model.

[0024] In the figure: 1. Installation side plate; 2. Traction sheave; 3. Measuring mechanism; 4. Laser speedometer; 5. Camera; 6. Light source; 7. Central control housing; 8. Motor; 9. Portable terminal; 11. Limit frame; 21. Traction rope; 22. First target; 30. Support rod; 31. First support plate; 32. Second support plate; 33. Speed measuring roller; 34. Central axis; 35. Slide block; 36. Spring telescopic rod; 37. Laser rangefinder; 38. Second target; 39. Encoder; 71. First antenna; 91. Control main body; 92. Display screen; 93. Control button; 94. Second antenna. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] The present utility model provides as Figure 1 - Figure 6An elevator steel wire rope slip amount detection device shown in the figure includes a mounting side plate 1. A traction wheel 2 is rotatably installed on one side of the mounting side plate 1. A central control housing 7 and a motor 8 are fixedly installed on the side of the mounting side plate 1 away from the traction wheel 2. The driving end of the motor 8 penetrates through the mounting side plate 1 and is fixedly installed in the middle of the traction wheel 2. A traction rope 21 is wound on the outer surface of the traction wheel 2. The motor 8 is used to provide the rotation of the traction wheel 2, and the motor 8 can receive signals to work or shut down.

[0027] A limiting frame 11 is fixedly installed on the side of the mounting side plate 1 close to the traction wheel 2. One end of the traction wheel 2 is rotatably installed on one side of the limiting frame 11. A measuring mechanism 3 is installed at the lower end of one side of the mounting side plate 1. The measuring mechanism 3 is sleeved on one section of the traction rope 21. A laser speedometer 4 is fixedly installed in the middle of the limiting frame 11. A first target 22 used in cooperation with the mounting side plate 1 is fixedly installed on the traction wheel 2. A camera 5 is fixedly installed on one side of the limiting frame 11. A light source 6 is fixedly installed on the side of the mounting side plate 1 close to the camera 5.

[0028] According to the formula, it can be known that S = (π×d×N×V) / (60×1000)

[0029] Among them, S is the steel wire rope slip amount, with the unit of millimeter; d is the diameter of the steel wire rope, with the unit of millimeter; N is the pulley rotation speed, with the unit of revolutions per second; V is the speed of the elevator, with the unit of meters per minute.

[0030] The measuring mechanism 3 can measure the speed of the traction rope 21, that is, the speed of V, and the measuring mechanism 3 can also measure the diameter of the steel wire rope, that is, d. The laser speedometer 4 and the first target 22 cooperate to measure the number of turns of the traction wheel 2 in real time. The camera 5 can shoot real-time pictures to the outside, enabling the staff to better observe the condition of the traction rope 21. Since this device is mostly installed inside the relatively dark elevator shaft, the light source 6 is set to provide the required lighting for shooting. It should be noted that the camera 5 and the light source 6 do not work all the time to save energy. They only work when the elevator reports a fault code, which can make the working life longer. They are in the standby state during normal work to save energy.

[0031] The measuring mechanism 3 includes a support rod 30. On one side of the support rod 30, a first support plate 31 is fixedly installed. On the side of the first support plate 31 away from the support rod 30, there is a second support plate 32. On the opposite sides of the first support plate 31 and the second support plate 32, there are two symmetrical speed measuring rollers 33. The support rod 30 is fixedly installed on the side surface of the installation side plate 1. A central shaft 34 is fixedly installed in the middle of the speed measuring roller 33. At both ends of the central shaft 34, sliders 35 are detachably installed. A plurality of sliders 35 are all slidably clamped in the middle of the corresponding first support plate 31 and second support plate 32. On both sides of the first support plate 31 and the second support plate 32, spring telescopic rods 36 are fixedly clamped. The telescopic ends of the spring telescopic rods 36 are fixedly installed on the side surfaces of the corresponding sliders 35.

[0032] On the side of the second support plate 32 away from the first support plate 31, there is a laser rangefinder 37. The laser rangefinder 37 is fixedly installed on the side surface of one of the sliders 35. On one side of the laser rangefinder 37, there is a second target 38 symmetrical to itself. The second target 38 is fixedly installed on the other slider 35. On the side of the first support plate 31 away from the second support plate 32, there is an encoder 39. The encoder 39 is fixedly installed on one of the sliders 35. The test end of the encoder 39 penetrates through the slider 35 and is fixedly installed in the middle of one of the central shafts 34.

[0033] During use, the two speed measuring rollers 33 will firmly press against multiple traction ropes 21 under the drive of the spring telescopic rods 36. After a long time of use, the traction ropes 21 will gradually be worn. The spring telescopic rods 36 can make them fit tightly, making the measured V more accurate. The laser rangefinder 37 is set to monitor the diameter of the traction ropes 21 in real time. When measuring its diameter, it can also transmit the measurement data to the outside, thereby avoiding the traction ropes 21 from being worn too severely and reminding the staff to replace them in time.

[0034] At the top of the central control housing 7, a first antenna 71 is fixedly installed. Inside the central control housing 7, an AD converter, a comparison module, a central control module, an execution module, and a sending module are fixedly installed. The sending module is wirelessly connected to a portable terminal 9 and a computer terminal

[0035] The laser speedometer 4, the laser rangefinder 37, and the encoder 39 are all electrically connected to the AD converter. The AD converter is electrically connected to the central control module. The central control module is electrically connected to the comparison module and the execution module. The execution module is electrically connected to the motor 8, the light source 6, and the camera 5. The camera is electrically connected to the sending module. The sending module is wirelessly signal-connected to an external computer terminal and the portable terminal 9.

[0036] The laser speedometer 4, the laser rangefinder 37, and the encoder 39 transmit the measured data to the AD converter. After the converter converts the signal into an analyzable digital signal, it is transmitted to the central control module. Then, after the central control module calculates through a formula, the calculation result is transmitted to the comparison module. After the comparison module makes a comparison, the comparison result is fed back to the central control module. If the slip amount exceeds the standard value, at this time, the central control module will control the execution module to work. The execution module controls the motor 8 to stop working and controls the camera 5 and the light source 6 to work. The camera 5 transmits the captured image to an external computer terminal and the portable terminal 9, so that the staff can make a suitable response plan.

[0037] It should be noted that the execution module will cut off the power supply of the motor 8 to make it stop working only after the elevator stops stably and the elevator door closes, and it will not cause the situation of people being trapped. When the motor 8 stops working, the elevator displays a fault code and cannot be used, avoiding accidents.

[0038] This device can monitor the wear amount of the traction rope 21 in real time, and can calculate the calibrated slip amount through the rotation speed of the traction wheel 2 and the transmission speed of the traction rope 21. No matter how many floors the elevator moves, it can accurately measure. The measurement can be completed under normal use conditions without special shutdown measurement, ensuring the safe operation of the elevator and improving safety.

[0039] The portable terminal 9 includes a control body 91. A display screen 92 is fixedly installed on the upper half of the control body 91, a control button 93 is fixedly installed on the lower half of the control body 91, and a second antenna 94 is fixedly installed on the top of the control body 91.

[0040] The portable terminal 9 can be equipped for security personnel. The portable terminal 9 can receive the signal sent by the sending module and issue an alarm. The alarm type is a buzzer plus a flashing red light alarm, reminding the nearby staff to quickly arrive at the scene to check if there are trapped people or to close the elevator, preventing accidents and further improving safety.

[0041] Because the usage scenarios are mostly elevator shafts, its signal is easily blocked. Using the first antenna 71 can increase the signal strength and penetration power, and setting the second antenna 94 can improve the signal reception ability.

Claims

1. An elevator steel wire rope slip amount detection device, including a mounting side plate (1), characterized in that: One side of the installation side plate (1) is rotatably installed with a traction wheel (2). One side of the installation side plate (1) close to the traction wheel (2) is fixedly installed with a limit frame (11). One end of the traction wheel (2) is rotatably installed on one side of the limit frame (11). A traction rope (21) is wound on the outer surface of the traction wheel (2). A measuring mechanism (3) is installed at the lower end of one side of the installation side plate (1). The measuring mechanism (3) is sleeved on one section of the traction rope (21). A laser speedometer (4) is fixedly installed in the middle of the limit frame (11). A first target (22) used in cooperation with the installation side plate (1) is fixedly installed on the traction wheel (2). A camera (5) is fixedly installed on one side of the limit frame (11). A light source (6) is fixedly installed on the side of the installation side plate (1) close to the camera (5).

2. The elevator steel wire rope slippage detection device according to claim 1, wherein: The measuring mechanism (3) includes a support rod (30). One side of the support rod (30) is fixedly installed with a first support plate (31). A second support plate (32) is arranged on the side of the first support plate (31) away from the support rod (30). Two symmetrical speed measuring rollers (33) are arranged on the opposite sides of the first support plate (31) and the second support plate (32). The support rod (30) is fixedly installed on the side surface of the installation side plate (1). A central shaft (34) is fixedly installed in the middle of the speed measuring roller (33).

3. The elevator steel wire rope slip amount detection device according to claim 2, characterized in that: Both ends of the central shaft (34) are detachably installed with sliders (35). A plurality of the sliders (35) are all slidably clamped in the middle of the corresponding first support plate (31) and the second support plate (32). Spring telescopic rods (36) are fixedly clamped on both sides of the first support plate (31) and the second support plate (32). The telescopic ends of the spring telescopic rods (36) are fixedly installed on the side surfaces of the corresponding sliders (35).

4. The elevator steel wire rope slip detection device according to claim 3, wherein: A laser rangefinder (37) is arranged on the side of the second support plate (32) away from the first support plate (31). The laser rangefinder (37) is fixedly installed on the side surface of one of the sliders (35). A second target (38) symmetrical to itself is arranged on one side of the laser rangefinder (37). The second target (38) is fixedly installed on the other slider (35). An encoder (39) is arranged on the side of the first support plate (31) away from the second support plate (32). The encoder (39) is fixedly installed on one of the sliders (35). The test end of the encoder (39) penetrates through the slider (35) and is fixedly installed in the middle of one of the central shafts (34).

5. The elevator steel wire rope slip amount detection device according to claim 1, characterized in that: A central control housing (7) and a motor (8) are fixedly installed on the side of the installation side plate (1) away from the traction wheel (2). A first antenna (71) is fixedly installed at the top of the central control housing (7). The driving end of the motor (8) penetrates through the installation side plate (1) and is fixedly installed in the middle of the traction wheel (2).

6. The elevator steel wire rope slip amount detection device according to claim 5, characterized in that: An AD converter, a comparison module, a central control module, an execution module, and a sending module are fixedly installed inside the central control housing (7). The sending module is wirelessly connected to a portable terminal (9) and a computer terminal.

7. The elevator steel wire rope slippage detection device according to claim 6, wherein: The portable terminal (9) includes a control main body (91). A display screen (92) is fixedly installed on the upper half of the control main body (91), control buttons (93) are fixedly installed on the lower half of the control main body (91), and a second antenna (94) is fixedly installed on the top end of the control main body (91).

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