Escalator safety detection device and method

Abstract

The invention discloses an escalator safety detection device and method, and relates to the technical field of escalator safety detection. According to the escalator safety detection device and method, a weighting base is included, a fixing box is fixedly installed at the top of the weighting base, fixing shafts are fixedly installed on the front side and the rear side of the fixing box, hollow columns are rotatably installed on the outer walls of the fixing shafts, hollow cylinders are slidably installed on the inner sides of the hollow columns, and the tops of the hollow cylinders extend to the positions above the hollow columns. According to the escalator safety detection device and method, the automatic alarm unit, the counter and the timer are used in cooperation, the running speed of the escalator handrail can be detected, and when the running speed of the escalator handrail exceeds the specified speed, the audible and visual alarm can be automatically started to remind detection personnel that the escalator handrail is overspeed; and secondly, the device does not need to be installed on the elevator, can be freely and flexibly used, facilitates detection of all elevators in a shopping mall, and improves the practicability of the detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of escalator safety detection, and in particular to an escalator safety detection device and method. Background Art

[0002] With the development of economy, people's living standards are gradually improving. Escalators are used more and more in daily life, bringing people a lot of convenience. In order to ensure the normal operation of escalators, security personnel need to detect the speed of escalators to ensure that the running speed of escalators is within the appropriate range and reduce the instability when pedestrians go up and down the escalator.

[0003] The publication number is CN109399436A, which is an escalator handrail speed detection device, comprising: a speed measuring mechanism floatingly mounted on a handrail bracket, the speed measuring mechanism comprising a coaxially arranged rotating roller and a rotary encoder, the rotating roller drives the rotary encoder to rotate, and the handrail speed is determined by the pulse of the rotary encoder; a handrail support roller arranged on the handrail bracket through the handrail support roller shaft; a force spring connected to the speed measuring mechanism and the handrail support roller shaft, through the force of the force spring, the rotating roller and the handrail support roller are clamped on the upper and lower surfaces of the handrail and rotate with the movement of the handrail. Whether the handrail is in a tensioned or relaxed state, it can effectively drive the rotating roller to rotate, thereby driving the rotary encoder, and the handrail speed is determined by the pulse of the rotary encoder. Such a design can avoid the handrail being unable to drive the rotating roller due to relaxation and avoid the possibility of misjudgment caused by the use of conventional proximity switches.

[0004] However, there are a large number of elevators in each shopping mall, and the above-mentioned detection device is fixedly installed on the elevator, which will lead to a large number of detection devices, further increasing the cost of the elevator. Secondly, the running speed of the elevator will not change during normal operation, and there is no need to install the detection device on the elevator for a long time. Summary of the invention

[0005] The object of the present invention is to provide an escalator safety detection device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an escalator safety detection device and method, comprising a weighted seat, a fixed box fixedly installed on the top of the weighted seat, a fixed shaft fixedly installed on the front and rear sides of the fixed box, a hollow column rotatably installed on the outer wall of the fixed shaft, a hollow cylinder slidably installed on the inner side of the hollow column, and the top of the hollow cylinder extends to the top of the hollow column, a telescopic cylinder slidably installed on the top of the hollow cylinder, a chassis fixedly installed on the top of the telescopic cylinder, a rotating shaft A rotatably installed on the front and rear sides of the chassis, a rotating wheel fixedly installed on the outer wall of the rotating shaft A, an audible and visual alarm fixedly installed on one side outer wall of the chassis, and also including an automatic alarm unit installed on the chassis, which is used to detect whether the escalator is overspeeding, a direction adjustment component installed between the fixed box and the hollow column, which is used to adjust the detection angle between the rotating wheel and the escalator, and a lifting component installed on the hollow column and the hollow cylinder, which is used to adjust the use height of the rotating wheel.

[0007] Preferably, the automatic alarm unit includes a rotating shaft B, a first gear, a second gear, a fixed wheel, a first tension spring, and a movable rod. The rotating shaft B is rotatably installed on the front and rear sides of the chassis, the first gear is fixedly installed on the outer wall of the rotating shaft B, the second gear is fixedly installed on the outer wall of the rotating shaft A, the fixed wheel is fixedly installed on the outer wall of the rotating shaft B, movable grooves are opened on both sides of the fixed wheel, the first tension spring is located in the movable groove, the movable rod is slidably installed in the movable groove, and the two ends of the first tension spring are respectively fixedly installed on the movable groove and one end of the movable rod.

[0008] Preferably, the automatic alarm unit also includes a sleeve, a telescopic rod, a connecting block, a second tension spring, and a starting button. The sleeve is fixedly mounted on the outer wall of the other side of the chassis, the telescopic rod is slidably mounted on the inner side of the sleeve, and one end of the telescopic rod extends to the outside of the sleeve, the connecting block is fixedly mounted on the outer wall of the telescopic rod, the second tension spring is fixedly mounted on the inner wall of the sleeve, and one end of the second tension spring is fixedly mounted on one end of the telescopic rod, the starting button is fixedly mounted on the inner wall of one side of the chassis, and the other end of the telescopic rod is in contact with the starting button. The running speed of the elevator handrail can be detected. When the running speed of the elevator handrail exceeds the specified speed, the sound and light alarm can also be automatically started to prompt the detection personnel that the elevator handrail is overspeeding, thereby adjusting the motor use speed. Secondly, the device does not need to be installed on the elevator and can be used freely and flexibly, which is convenient for detecting all elevators in the shopping mall, thereby improving the practicality of the detection device.

[0009] Preferably, the direction adjustment component includes a servo motor, a worm, and a worm wheel. The servo motor is fixedly installed on the outer wall of one side of the fixed box, the worm is rotatably installed on both sides of the fixed box, the worm wheel is fixedly installed on the outer wall of the hollow column, and the worm wheel is meshed with the worm. The output shaft of the servo motor is fixedly installed on one end of the worm, which can drive the hollow column, hollow cylinder, telescopic cylinder, chassis, rotating axis A, and rotating wheel to deflect, and can change the contact angle of the rotating wheel elevator handrail.

[0010] Preferably, the lifting assembly includes a rotating shaft, a first bevel gear, a threaded rod, a second bevel gear, and a crank. The rotating shaft is rotatably installed on the front side of the hollow column, the first bevel gear is fixedly installed on one end of the rotating shaft, the threaded rod is rotatably installed on the inner bottom of the hollow column, the second bevel gear is fixedly installed on the outer wall of the threaded rod, the crank is fixedly installed on the other end of the rotating shaft, and the first bevel gear is meshed with the second bevel gear. The bottom thread of the hollow cylinder is installed on the outer wall of the threaded rod, which can drive the hollow cylinder, telescopic cylinder, chassis, rotating shaft A, and rotating wheel to rise and fall, and the use height of the rotating wheel can be adjusted according to the height of the elevator handrail, which is convenient for detecting any type of elevator handrail, thereby improving the functionality of the device.

[0011] Preferably, a fixed block is fixedly installed on the inner wall of the hollow cylinder, and a push spring is arranged on the inner side of the hollow cylinder. The push spring is located in contact with the fixed block and the telescopic cylinder. The push spring can drive the rotating wheel to be close to the surface of the handrail, thereby avoiding separation of the rotating wheel and the elevator handrail, reducing errors and improving detection accuracy.

[0012] Preferably, a counter is fixedly mounted on the front outer wall of the chassis, and a detection end of the counter is fixedly mounted to one end of the rotating axis A.

[0013] Preferably, a timer is fixedly mounted on the outer wall of the counter.

[0014] Preferably, a movable opening A is opened on the top of the fixing box, and the hollow column is movably installed in the movable opening A; a movable opening B is opened on the top of the chassis, and the rotating wheel is movably installed in the movable opening B.

[0015] An escalator safety detection method is provided, by starting the servo motor, the output shaft of the servo motor drives the worm to rotate, the rotation of the worm drives the worm wheel, the hollow column, the hollow cylinder, the telescopic cylinder, the chassis, the rotating shaft A, and the rotating wheel to deflect with the fixed axis as the axis, and the angle between the rotating wheel and the elevator handrail is adjusted, and the crank is manually twisted, the crank drives the rotating shaft and the first bevel gear to rotate, the rotation of the first bevel gear drives the second bevel gear and the threaded rod to rotate, the rotation of the threaded rod drives the hollow cylinder, the telescopic cylinder, the chassis, the rotating shaft A, and the rotating wheel to rise or fall, so as to adjust the use height of the rotating wheel, and then the device is manually pushed to drive the rotating wheel to contact with the elevator handrail, due to the push spring on the telescopic cylinder, the chassis, and the rotating wheel The push of shaft A and the rotating wheel enables the rotating wheel to always be in contact with the elevator handrail. By starting the elevator, the elevator handrail also moves. The movement of the elevator handrail drives the rotating wheel, rotating shaft A, and the second gear to rotate. The rotation of the second gear drives the first gear, rotating shaft B, and the fixed wheel to rotate. The rotation of the fixed wheel drives the movable rod to rotate centrifugally. The greater the speed of the elevator handrail, the greater the centrifugal force exerted on the movable rod. When the speed of the elevator handrail reaches a certain speed, the movable rod will move outward due to the centrifugal force, and the movable rod will push the connecting block and the telescopic rod. The telescopic rod will press the start button, and the start button will activate the sound and light alarm to remind the detection personnel that the elevator handrail is running at a fast speed, which will affect the passengers' use.

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

[0017] The escalator safety detection device and method can detect the running speed of the elevator handrail by using an automatic alarm unit, a counter and a timer. When the running speed of the elevator handrail exceeds the specified speed, the sound and light alarm can be automatically started to remind the detection personnel that the elevator handrail is overspeeding, so as to adjust the motor speed. Secondly, the device does not need to be installed on the elevator and can be used freely and flexibly, which is convenient for detecting all elevators in the shopping mall, thereby improving the practicality of the detection device.

[0018] Through the direction adjustment component, the hollow column, hollow cylinder, telescopic cylinder, chassis, rotating shaft A, and rotating wheel can be driven to deflect, which can change the contact angle of the rotating wheel and the elevator handrail. Then, through the cooperation of the push spring, the rotating wheel can be closely attached to the handrail surface to avoid the separation of the rotating wheel and the elevator handrail, reduce the error, and improve the detection accuracy;

[0019] Through the lifting assembly, the hollow cylinder, telescopic cylinder, chassis, rotating shaft A, and rotating wheel can be driven to rise and fall. The use height of the rotating wheel can be adjusted according to the height of the elevator handrail, which is convenient for detecting any type of elevator handrails and improves the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 is a cross-sectional view of a fixing box of the present invention;

[0023] Figure 3 It is a cross-sectional view of the hollow column and hollow cylinder of the present invention;

[0024] Figure 4 is a cross-sectional view of the chassis of the present invention;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure on the other side;

[0026] Figure 6 It is a cross-sectional view of the fixed wheel and sleeve of the present invention.

[0027] Figure numerals: 1. weighted seat; 2. fixed box; 3. fixed shaft; 4. hollow column; 5. hollow cylinder; 6. telescopic cylinder; 7. chassis; 8. rotating shaft A; 9. rotating wheel; 10. counter; 11. timer; 12. rotating shaft B; 13. first gear; 14. second gear; 15. fixed wheel; 16. first tension spring; 17. movable rod; 18. sleeve; 19. telescopic rod; 20. connecting block; 21. second tension spring; 22. start button; 23. fixed block; 24. push spring; 25. servo motor; 26. worm; 27. worm wheel; 28. rotating shaft; 29. ​​first bevel gear; 30. threaded rod; 31. second bevel gear; 32. crank; 33. sound and light alarm. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] See also Figure 1-6The present invention provides a technical solution: an escalator safety detection device and method, comprising a weighted seat 1, a fixed box 2 is fixedly installed on the top of the weighted seat 1, a fixed shaft 3 is fixedly installed on the front and rear sides of the fixed box 2, a hollow column 4 is rotatably installed on the outer wall of the fixed shaft 3, a hollow cylinder 5 is slidably installed on the inner side of the hollow column 4, and the top of the hollow cylinder 5 extends to the top of the hollow column 4, a telescopic cylinder 6 is slidably installed on the top of the hollow cylinder 5, a chassis 7 is fixedly installed on the top of the telescopic cylinder 6, a rotating shaft A8 is rotatably installed on the front and rear sides of the chassis 7, a rotating wheel 9 is fixedly installed on the outer wall of the rotating shaft A8, an audible and visual alarm 33 is fixedly installed on one side outer wall of the chassis 7, and also includes an automatic alarm unit installed on the chassis 7, which is used to detect whether the escalator is overspeeding, a direction adjustment component installed between the fixed box 2 and the hollow column 4, which is used to adjust the detection angle between the rotating wheel 9 and the escalator, and a lifting component installed on the hollow column 4 and the hollow cylinder 5, which is used to adjust the use height of the rotating wheel 9.

[0030] Furthermore, the automatic alarm unit includes a rotating shaft B12, a first gear 13, a second gear 14, a fixed wheel 15, a first tension spring 16, and a movable rod 17. The rotating shaft B12 is rotatably installed on the front and rear sides of the chassis 7, the first gear 13 is fixedly installed on the outer wall of the rotating shaft B12, the second gear 14 is fixedly installed on the outer wall of the rotating shaft A8, the fixed wheel 15 is fixedly installed on the outer wall of the rotating shaft B12, and movable grooves are opened on both sides of the fixed wheel 15. The first tension spring 16 is located in the movable groove, and the movable rod 17 is slidably installed in the movable groove, and the two ends of the first tension spring 16 are respectively fixedly installed on the movable groove and one end of the movable rod 17.

[0031] Furthermore, the automatic alarm unit also includes a sleeve 18, a telescopic rod 19, a connecting block 20, a second tension spring 21, and a start button 22. The sleeve 18 is fixedly mounted on the outer wall of the other side of the chassis 7, the telescopic rod 19 is slidably mounted on the inner side of the sleeve 18, and one end of the telescopic rod 19 extends to the outside of the sleeve 18, the connecting block 20 is fixedly mounted on the outer wall of the telescopic rod 19, the second tension spring 21 is fixedly mounted on the inner wall of the sleeve 18, and one end of the second tension spring 21 is fixedly mounted on one end of the telescopic rod 19, the start button 22 is fixedly mounted on the inner wall of one side of the chassis 7, and the other end of the telescopic rod 19 is in contact with the start button 22. The running speed of the elevator handrail can be detected. When the running speed of the elevator handrail exceeds the specified speed, the sound and light alarm 33 can also be automatically started to prompt the detection personnel that the elevator handrail is overspeeding, thereby adjusting the motor use speed. Secondly, the device does not need to be installed on the elevator and can be used freely and flexibly, which is convenient for detecting all elevators in the shopping mall, thereby improving the practicality of the detection device.

[0032] Furthermore, the direction adjustment component includes a servo motor 25, a worm 26, and a worm wheel 27. The servo motor 25 is fixedly installed on the outer wall of one side of the fixed box 2, the worm 26 is rotatably installed on both sides of the fixed box 2, the worm wheel 27 is fixedly installed on the outer wall of the hollow column 4, and the worm wheel 27 is meshed with the worm 26. The output shaft of the servo motor 25 is fixedly installed on one end of the worm 26, which can drive the hollow column 4, the hollow cylinder 5, the telescopic cylinder 6, the chassis 7, the rotating shaft A8, and the rotating wheel 9 to deflect, and can change the contact angle of the rotating wheel 9 with the elevator handrail.

[0033] Furthermore, the lifting assembly includes a rotating shaft 28, a first bevel gear 29, a threaded rod 30, a second bevel gear 31, and a crank 32. The rotating shaft 28 is rotatably installed on the front side of the hollow column 4, the first bevel gear 29 is fixedly installed on one end of the rotating shaft 28, the threaded rod 30 is rotatably installed on the inner bottom of the hollow column 4, the second bevel gear 31 is fixedly installed on the outer wall of the threaded rod 30, the crank 32 is fixedly installed on the other end of the rotating shaft 28, and the first bevel gear 29 is meshed with the second bevel gear 31. The bottom thread of the hollow cylinder 5 is installed on the outer wall of the threaded rod 30, which can drive the hollow cylinder 5, the telescopic cylinder 6, the chassis 7, the rotating shaft A8, and the rotating wheel 9 to be lifted and lowered. The use height of the rotating wheel 9 can be adjusted according to the height of the elevator handrail, which is convenient for detecting any type of elevator handrails, thereby improving the functionality of the device.

[0034] Furthermore, a fixed block 23 is fixedly installed on the inner wall of the hollow cylinder 5, and a push spring 24 is arranged on the inner side of the hollow cylinder 5. The push spring 24 is located in contact with the fixed block 23 and the telescopic cylinder 6. The push spring 24 can drive the rotating wheel 9 to be close to the surface of the handrail, thereby avoiding separation of the rotating wheel 9 from the elevator handrail, reducing errors, and improving detection accuracy.

[0035] Furthermore, a counter 10 is fixedly mounted on the front outer wall of the chassis 7 , and a detection end of the counter 10 is fixedly mounted to one end of the rotating shaft A8 .

[0036] Furthermore, a timer 11 is fixedly mounted on the outer wall of the counter 10 .

[0037] Furthermore, a movable opening A is opened on the top of the fixed box 2, and the hollow column 4 is movably installed in the movable opening A; a movable opening B is opened on the top of the chassis 7, and the rotating wheel 9 is movably installed in the movable opening B.

[0038] An escalator safety detection method is provided. The servo motor 25 is started. The output shaft of the servo motor 25 drives the worm 26 to rotate. The rotation of the worm 26 drives the worm wheel 27, the hollow column 4, the hollow cylinder 5, the telescopic cylinder 6, the chassis 7, the rotating shaft A8, and the rotating wheel 9 to deflect with the fixed axis 3 as the axis center, so as to adjust the angle between the rotating wheel 9 and the elevator handrail. The crank 32 is manually twisted. The crank 32 drives the rotating shaft 28 and the first bevel gear 29 to rotate. The rotation of the first bevel gear 29 drives the second bevel gear 31 and the threaded rod 30 to rotate. The rotation of the threaded rod 30 drives the hollow cylinder 5, the telescopic cylinder 6, the chassis 7, the rotating shaft A8, and the rotating wheel 9 to rise or fall, so as to adjust the use height of the rotating wheel 9. Then, the device is manually pushed to drive the rotating wheel 9 to contact with the elevator handrail. Due to the push spring 24 on the telescopic cylinder 6 and the chassis 7, the rotating shaft A8 and the rotating wheel 9 are rotated. , rotating shaft A8, and the push of the rotating wheel 9, so that the rotating wheel 9 can always be in contact with the elevator handrail. By starting the elevator, the elevator handrail also moves. The movement of the elevator handrail drives the rotating wheel 9, the rotating shaft A8, and the second gear 14 to rotate. The rotation of the second gear 14 drives the first gear 13, the rotating shaft B12, and the fixed wheel 15 to rotate. The rotation of the fixed wheel 15 drives the movable rod 17 to rotate centrifugally. The greater the speed of the elevator handrail, the greater the centrifugal force on the movable rod 17. When the speed of the elevator handrail reaches a certain speed, the movable rod 17 will move outward due to the centrifugal force, and the movable rod 17 will push the connecting block 20 and the telescopic rod 19. The telescopic rod 19 will press the start button 22, and the start button 22 will start the sound and light alarm 33, prompting the detection personnel that the elevator handrail runs at a fast speed, which will affect the passengers' use.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An escalator safety detection device, comprising a weighted seat (1), a fixed box (2) is fixedly installed on the top of the weighted seat (1), a fixed shaft (3) is fixedly installed on the front and rear sides of the fixed box (2), a hollow column (4) is rotatably installed on the outer wall of the fixed shaft (3), a hollow cylinder (5) is slidably installed on the inner side of the hollow column (4), and the top of the hollow cylinder (5) extends to the top of the hollow column (4), a telescopic cylinder (6) is slidably installed on the top of the hollow cylinder (5), a chassis (7) is fixedly installed on the top of the telescopic cylinder (6), a rotating shaft A (8) is rotatably installed on the front and rear sides of the chassis (7), a rotating wheel (9) is fixedly installed on the outer wall of the rotating shaft A (8), and an audible and visual alarm (33) is fixedly installed on the outer wall of one side of the chassis (7), characterized in that: Also includes: An automatic alarm unit installed on the chassis (7), used to detect whether the escalator is overspeeding; A direction adjustment component installed between the fixed box (2) and the hollow column (4), and used to adjust the detection angle between the rotating wheel (9) and the escalator through the direction adjustment component; A lifting assembly is installed on the hollow column (4) and the hollow cylinder (5), and is used to adjust the use height of the rotating wheel (9).

2. An escalator safety detection device according to claim 1, characterized in that: The automatic alarm unit comprises a rotating shaft B (12), a first gear (13), a second gear (14), a fixed wheel (15), a first tension spring (16), and a movable rod (17); the rotating shaft B (12) is rotatably mounted on the front and rear sides of the chassis (7); the first gear (13) is fixedly mounted on the outer wall of the rotating shaft B (12); the second gear (14) is fixedly mounted on the outer wall of the rotating shaft A (8); the fixed wheel (15) is fixedly mounted on the outer wall of the rotating shaft B (12); movable grooves are provided on both sides of the fixed wheel (15); the first tension spring (16) is located in the movable groove; the movable rod (17) is slidably mounted in the movable groove; and two ends of the first tension spring (16) are respectively fixedly mounted on the movable groove and one end of the movable rod (17).

3. An escalator safety detection device according to claim 2, characterized in that: The automatic alarm unit further comprises a sleeve (18), a telescopic rod (19), a connecting block (20), a second tension spring (21), and a start button (22); the sleeve (18) is fixedly mounted on the outer wall of the other side of the chassis (7); the telescopic rod (19) is slidably mounted on the inner side of the sleeve (18), and one end of the telescopic rod (19) extends to the outer side of the sleeve (18); the connecting block (20) is fixedly mounted on the outer wall of the telescopic rod (19); the second tension spring (21) is fixedly mounted on the inner wall of the sleeve (18), and one end of the second tension spring (21) is fixedly mounted on one end of the telescopic rod (19); the start button (22) is fixedly mounted on the inner wall of one side of the chassis (7), and the other end of the telescopic rod (19) contacts the start button (22).

4. An escalator safety detection device according to claim 3, characterized in that: The direction adjustment component comprises a servo motor (25), a worm (26), and a worm wheel (27); the servo motor (25) is fixedly mounted on an outer wall of one side of the fixed box (2); the worm (26) is rotatably mounted on both sides of the fixed box (2); the worm wheel (27) is fixedly mounted on the outer wall of the hollow column (4); the worm wheel (27) is meshed with the worm (26); and the output shaft of the servo motor (25) is fixedly mounted on one end of the worm (26).

5. An escalator safety detection device according to claim 4, characterized in that: The lifting assembly comprises a rotating shaft (28), a first bevel gear (29), a threaded rod (30), a second bevel gear (31), and a crank (32); the rotating shaft (28) is rotatably mounted on the front side of the hollow column (4); the first bevel gear (29) is fixedly mounted on one end of the rotating shaft (28); the threaded rod (30) is rotatably mounted on the inner bottom of the hollow column (4); the second bevel gear (31) is fixedly mounted on the outer wall of the threaded rod (30); the crank (32) is fixedly mounted on the other end of the rotating shaft (28); the first bevel gear (29) is meshed with the second bevel gear (31); and the bottom of the hollow cylinder (5) is threadedly mounted on the outer wall of the threaded rod (30).

6. An escalator safety detection device according to claim 5, characterized in that: A fixed block (23) is fixedly mounted on the inner wall of the hollow cylinder (5), and a push spring (24) is arranged on the inner side of the hollow cylinder (5). The push spring (24) is located at a position where the fixed block (23) contacts the telescopic cylinder (6).

7. An escalator safety detection device according to claim 6, characterized in that: A counter (10) is fixedly mounted on the front outer wall of the chassis (7), and a detection end of the counter (10) is fixedly mounted on one end of the rotating shaft A (8).

8. An escalator safety detection device according to claim 7, characterized in that: A timer (11) is fixedly mounted on the outer wall of the counter (10).

9. An escalator safety detection device according to claim 8, characterized in that: The top of the fixed box (2) is provided with a movable opening A, the hollow column (4) is movably installed in the movable opening A, the top of the chassis (7) is provided with a movable opening B, the rotating wheel (9) is movably installed in the movable opening B.

10. The detection method of an escalator safety detection device according to claim 9, characterized in that: By starting the servo motor (25), the output shaft of the servo motor (25) drives the worm (26) to rotate, and the rotation of the worm (26) drives the worm wheel (27), the hollow column (4), the hollow cylinder (5), the telescopic cylinder (6), the chassis (7), the rotating shaft A (8), and the rotating wheel (9) to deflect around the fixed shaft (3) as the axis, and the angle between the rotating wheel (9) and the elevator handrail is adjusted. By manually twisting the crank (32), the crank (32) drives the rotating shaft (28), the first umbrella-shaped The gear (29) rotates, and the rotation of the first bevel gear (29) drives the second bevel gear (31) and the threaded rod (30) to rotate. The rotation of the threaded rod (30) drives the hollow cylinder (5), the telescopic cylinder (6), the chassis (7), the rotating shaft A (8), and the rotating wheel (9) to rise or fall, thereby adjusting the use height of the rotating wheel (9). Then, the device is manually pushed to drive the rotating wheel (9) to contact the elevator handrail. Due to the push spring (24) pressing the telescopic cylinder (6), the machine case (7), the rotating shaft A (8), and the rotating wheel (9), the telescopic cylinder (6), the machine case (7), the rotating shaft A (8), and the rotating wheel (9) to rise or fall. The box (7), the rotating shaft A (8) and the rotating wheel (9) are pushed so that the rotating wheel (9) can always be in contact with the elevator handrail. When the elevator is started, the elevator handrail also moves. The movement of the elevator handrail drives the rotating wheel (9), the rotating shaft A (8) and the second gear (14) to rotate. The rotation of the second gear (14) drives the first gear (13), the rotating shaft B (12) and the fixed wheel (15) to rotate. The rotation of the fixed wheel (15) drives the movable rod (17) to rotate centrifugally. When the speed of the elevator handrail is higher, the centrifugal force on the movable rod (17) is higher. When the speed of the elevator handrail reaches a certain speed, the movable rod (17) will move outward due to the centrifugal force. The movable rod (17) will push the connecting block (20) and the telescopic rod (19). The telescopic rod (19) will press the start button (22). The start button (22) will start the sound and light alarm (33), prompting the detection personnel that the running speed of the elevator handrail is fast, which will affect the use of passengers.

Images