A speed measuring device for detecting a traction passenger elevator and a method of using the same

Abstract

The application discloses a kind of traction passenger elevator detection speed measuring device and its using method, it is related to elevator detection field.A kind of traction passenger elevator detection speed measuring device, including bottom plate, further include: support guide column is fixedly connected on the bottom plate, support guide column is slidably connected with support plate on;Connecting plate is located on the bottom plate upper side, second spring is connected between the connecting plate and support plate;When the traction passenger elevator is measured and detected, by increasing pressure in the sleeve, the connecting plate is pushed to move upwards, the second spring is compressed to generate thrust, and then the support plate is pushed to drive the wheel part of speed measuring wheel and counter pulley to be closely attached, so as to improve the stability of the traction passenger elevator lifting speed measuring device for measuring the speed of the traction passenger elevator, and the wheel part of speed measuring wheel is in contact with the wheel part of counter pulley for a long time Friction can cause serious wear, facilitate the quick disassembly, replacement and installation of speed measuring wheel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of elevator detection, and particularly relates to a speed measuring device for traction passenger elevator detection and a use method thereof. BACKGROUND

[0002] The running speed of an elevator car affects the convenience and safety of travel. In order to monitor the running speed of the elevator car in real time, a speed measuring device is usually installed on the top of the car to measure the rotating speed of a counter pulley arranged on the top of the car.

[0003] The existing speed measuring device is composed of a support frame, a speed measurer and a speed measuring wheel. The speed measurer is installed on one side of the support frame, and the speed measuring wheel is installed on the rotating shaft of the speed measurer. The support frame is provided with a mounting hole, which can be sleeved with a stud arranged on the car and locked by a nut, so as to fix the support frame. At this time, the speed measuring wheel contacts the wheel part of the counter pulley. When the counter pulley rotates, the speed measuring wheel and the rotating shaft of the speed measurer rotate at the same time. The speed measurer transmits the speed data to a monitoring computer through a transmission line. The existing speed measuring device has the following problems: the wheel part of the speed measuring wheel is made of rubber, and the rubber of the wheel part is gradually worn out after a long time of contact with the counter pulley, so that the speed measuring wheel cannot effectively contact the counter pulley, which affects the stability of the speed measuring device, and the speed measuring wheel is inconvenient to disassemble and replace when it is seriously worn out. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a speed measuring device for traction passenger elevator detection and a use method thereof, which can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0006] A kind of traction passenger elevator detection is measured with speed device, including bottom plate, further include: support guide column, fixedly connected on the bottom plate, support guide column is slidably connected with support plate;Connecting plate is located on the bottom plate upper side, second spring is connected between the connecting plate and support plate, wherein, lifting assembly that drives connecting plate jacking movement is equipped on the bottom plate;Speedometer is fixedly installed on the support plate, output end of the speedometer is fixedly connected with the shaft of a generator;Crankshaft, limit disc are all fixedly sleeved on the shaft of a generator;Speed measuring wheel is sleeved on the shaft of a generator;Limit cover is covered on the shaft of a generator, and with the outer wall of speed measuring wheel is fitted, hollow cavity is opened in the limit cover;Piston disc one is slidably connected in the hollow cavity;Clamping block is fixedly connected on the piston disc one, first spring is connected between the piston disc one and hollow cavity, the clamping block is clamped in the slot opened in the outer wall of the shaft of a generator, handle is equipped on the outer wall of the limit cover, the handle is fixedly connected with piston disc one by connecting rod, sealing ring is equipped on the hollow cavity, and the sealing ring is fitted with the outer wall of connecting rod;Pressure relief transmission assembly is connected on the jacking assembly, and the jacking assembly is connected with the inner cavity of hollow cavity by pressure relief transmission assembly, pressure relief pipe two is connected on the hollow cavity;Piston assembly is connected on the support plate, and the piston assembly is rotatably connected with crankshaft;Catheter one is connected on the piston assembly, and the piston assembly is connected with jacking assembly by catheter two.

[0007] Preferably, the piston assembly includes a piston cylinder, a piston plate, and a guide rod, the piston cylinder is fixedly connected to the support plate, the piston plate is slidably connected to the piston cylinder, the guide rod is rotatably connected to the piston plate, the guide rod is rotatably connected to the crankshaft at an end away from the piston plate, and the catheter one is connected to the piston cylinder.

[0008] To drive the connecting plate to jacking move, further, the jacking assembly includes two sets of sleeves, a piston disc two, and a support rod, the two sets of sleeves are fixedly connected to the bottom plate, the piston disc two is slidably connected to the two sets of sleeves, one end of the support rod is fixedly connected to the piston disc two, and the other end is fixedly connected to the connecting plate, one end of the catheter two is respectively connected to the inner cavities of the two sets of sleeves, and the other end is connected to the inner cavity of the piston cylinder, and the catheter one and the catheter two are each provided with a one-way valve.

[0009] To limit the piston disc two, further, the inner walls of the two sets of sleeves are provided with two sets of limiting blocks, the two sets of limiting blocks are fixedly connected to the inner walls of the sleeves at upper and lower ends, and the piston disc two is in contact with the limiting block at the lower end when in an initial state.

[0010] In order to filter the gas entering the filter box from outside, further, the upper side of the support plate is fixedly connected with a filter box, a plurality of groups of activated carbon filter screens are inserted into the filter box, an air inlet hole is formed on the filter box, and the air inlet end of the conduit one is communicated with the inner cavity of the filter box.

[0011] In order to facilitate automatic air supply to the hollow cavity, further, the pressure relief transmission assembly comprises a pressure relief pipe one, a rotary joint and a conduit three, the pressure relief pipe one is communicated with the inner cavity of the sleeve through the exhaust pipe, the conduit three is arranged in the limiting cover and is connected with the hollow cavity, and the air outlet end of the pressure relief pipe one is connected with the air inlet end of the conduit three through the rotary joint.

[0012] In order to facilitate the exhaust of the gas in the hollow cavity and the sleeve, further, the exhaust pipe is fixedly connected on the sleeve, the valve switch one is connected on the exhaust pipe, the conduit four is connected on the pressure relief pipe two, and the valve switch two is connected on the conduit four.

[0013] In order to guide and limit the support plate, preferably, the support plate is fixedly connected with a sliding block, a limiting sliding groove is formed on the support guide column, the sliding block is slidingly connected in the limiting sliding groove, and the support guide column is welded on the bottom plate through the reinforcing plate.

[0014] In order to facilitate the installation and dismounting of the bottom plate, preferably, mounting holes are formed on the left and right ends of the bottom plate, mounting bolts are inserted into the mounting holes, and lock nuts are threadedly connected on the mounting bolts.

[0015] A method for using a speed measuring device for detecting a traction passenger elevator, which comprises the following steps:

[0016] Step one: place the bottom plate as a whole on the elevator car, then press the support plate downward, and manually move the bottom plate as a whole, so that the mounting holes on the bottom plate are aligned with the connecting holes on the elevator car, and the wheel part of the speed measuring wheel is aligned with the wheel part of the counter rope wheel;

[0017] Step two: loosen the support plate, so that the second spring after compression generates a pushing force to push the support plate to drive the wheel part of the speed measuring wheel to press the wheel part of the counter rope wheel, then pass the mounting bolts through the mounting holes and the connecting holes, and screw on the lock nuts;

[0018] Step three: when the counter rope wheel works, the friction between the counter rope wheel and the wheel part of the speed measuring wheel drives the rotating shaft to rotate, and then the speed measuring device detects the lifting speed of the traction passenger elevator;

[0019] Step four: the piston assembly moves to extract external gas into the sleeve, the gas pushes the second piston disc to drive the connecting plate to move upward, compresses the second spring, and the second spring after compression generates a pushing force to push the support plate to drive the wheel parts of the speed measuring wheel and the counter rope wheel to closely adhere to each other.

[0020] Step five: through pressure relief, part of the gas in the sleeve is discharged into the hollow cavity through the pressure relief pipe one and the conduit three, and the gas entering the hollow cavity pushes the piston disc one to drive the clamping block to always clamp in the clamping groove of the rotating shaft;

[0021] Step six: when the wheel part of the speed measuring wheel needs to be replaced due to serious wear, the valve switch two is opened, and then the piston disc one is pulled to move away from the axis of the rotating shaft, so that the clamping block moves out of the clamping groove and retracts into the hollow cavity, and then the limiting cover and the speed measuring wheel are removed.

[0022] After adopting the above technical scheme, the present application has the following beneficial effects compared with the prior art:

[0023] 1. The speed measuring device for detecting the traction passenger elevator, through the movement of the piston assembly to supply gas into the sleeve, the gas entering the sleeve pushes the piston disc two to move upward, at the same time, the piston disc two pushes the connecting plate upward through the support rod, compresses the second spring, so that the second spring generates a pushing force after compression, and then pushes the support plate to drive the wheel part of the speed measuring wheel and the counter pulley to closely adhere under the guidance and limitation of the support guide column, thereby improving the stability of the speed measuring device for measuring the lifting speed of the traction passenger elevator.

[0024] 2. The speed measuring device for detecting the traction passenger elevator, the valve switch two is opened to discharge the gas in the hollow cavity, then the piston disc one is pulled to move away from the axis of the rotating shaft, the first spring is compressed, at the same time, the clamping block moves synchronously with the piston disc one, and then the clamping block moves out of the clamping groove and retracts into the hollow cavity, then the staff moves the limiting cover to the left, takes out the limiting cover on the rotating shaft, and removes the speed measuring wheel sleeved on the rotating shaft, thereby facilitating the quick disassembly and replacement of the speed measuring wheel.

[0025] When the traction passenger elevator is measured and detected, the present application increases the pressure in the sleeve, pushes the connecting plate to move upward, compresses the second spring to generate a pushing force, and then pushes the support plate to drive the wheel part of the speed measuring wheel and the counter pulley to closely adhere, thereby improving the stability of the speed measuring device for measuring the lifting speed of the traction passenger elevator, and when the wheel part of the speed measuring wheel is seriously worn due to long-time contact and friction with the wheel part of the counter pulley, the speed measuring wheel can be quickly disassembled, replaced and installed.

[0026] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are part of this specification, serve to further understand the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute improper limitations on the present application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0028] In the drawings:

[0029] Figure 1 is a structural schematic of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application Figure 1 ;

[0030] Figure 2 is a structural schematic of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application Figure 2 ;

[0031] Figure 3 is a structural schematic of a limiting cover of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application

[0032] Figure 4 is a structural schematic of a filter box of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application

[0033] Figure 5 is an enlarged view of part A of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application Figure 1 ;

[0034] Figure 6 is an enlarged view of part B of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application Figure 2 ;

[0035] Figure 7 is an enlarged view of part C of a speed measuring device for detecting a traction passenger elevator and a method of using the same according to the present application Figure 3 .

[0036] In the figure: 1, bottom plate; 101, mounting hole; 102, mounting bolt; 103, locking nut; 2, support guide column; 201, reinforcing plate; 202, limit sliding groove; 203, support plate; 204, sliding block; 3, speedometer; 301, rotating shaft; 302, limit disc; 303, speed measuring wheel; 304, limit cover; 305, crankshaft; 4, hollow cavity; 401, piston disc one; 402, clamping block; 403, first spring; 404, connecting rod; 405, handle; 5, piston assembly; 501, piston cylinder; 502, piston plate; 503, guide rod; 504, guide pipe one; 505, guide pipe two; 6, sleeve; 601, piston disc two; 602, support rod; 603, connecting plate; 604, second spring; 605, limit block; 606, exhaust pipe; 607, valve switch one; 7, filter box; 701, activated carbon filter screen; 702, air inlet hole; 8, pressure relief pipe one; 801, rotary joint; 802, guide pipe three; 803, pressure relief pipe two; 804, guide pipe four; 805, valve switch two; 9, sealing ring.

[0037] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0039] Example 1:

[0040] Reference Figures 1-7A kind of traction passenger elevator detection speed measuring device, including bottom plate 1, still include: support guide column 2, fixedly connected on bottom plate 1, support guide column 2 slidingly connected with support plate 203;Connecting plate 603, located bottom plate 1 upper side, connecting plate 603 with support plate 203 between being connected with second spring 604, wherein, bottom plate 1 is equipped with the jacking assembly of driving connecting plate 603 jacking movement;Speedometer 3, fixedly installed on support plate 203, the output end of speedometer 3 is fixedly connected with shaft 301;Crankshaft 305, limit disc 302, are fixedly sleeved on shaft 301;Speed measuring wheel 303, is sleeved on shaft 301;Limit cover 304, cover in shaft 301, and with the outer wall of speed measuring wheel 303 is fitted, hollow cavity 4 is opened in limit cover 304;Piston disc one 401, slidingly connected in hollow cavity 4;Clamping block 402, fixedly connected on piston disc one 401, first spring 403 is connected between piston disc one 401 and hollow cavity 4, clamping block 402 is clamped in the slot opened in the outer wall of shaft 301, handle 405 is provided on the outer wall of limit cover 304, handle 405 is fixedly connected with piston disc one 401 by connecting rod 404, sealing ring 9 is provided on hollow cavity 4, and sealing ring 9 is fitted with the outer wall of connecting rod 404;Pressure relief transmission assembly, is connected on jacking assembly, jacking assembly is connected with the inner cavity of hollow cavity 4 by pressure relief transmission assembly, and pressure relief pipe two 803 is connected on hollow cavity 4;Piston assembly 5, is connected on support plate 203, and piston assembly 5 is rotatably connected with crankshaft 305;Catheter one 504, is connected on piston assembly 5, and piston assembly 5 is connected with jacking assembly by catheter two 505.

[0041] Piston assembly 5 includes piston cylinder 501, piston plate 502, guide rod 503, piston cylinder 501 is fixedly connected on support plate 203, piston plate 502 is slidingly connected in piston cylinder 501, guide rod 503 is rotatably connected on piston plate 502, the end of guide rod 503 away from piston plate 502 is rotatably connected with crankshaft 305, and catheter one 504 is connected on piston cylinder 501.

[0042] Jacking assembly includes two sets of sleeve 6, piston disc two 601, support rod 602, two sets of sleeve 6 are fixedly connected on bottom plate 1, piston disc two 601 is slidingly connected in two sets of sleeve 6, support rod 602 one end is fixedly connected with piston disc two 601, the other end is fixedly connected with connecting plate 603, and catheter two 505 one end is connected with the inner cavity of two sets of sleeve 6 respectively, and the other end is connected with the inner cavity of piston cylinder 501, and one-way valve is provided on catheter one 504 and catheter two 505.

[0043] The pressure relief transmission assembly comprises a pressure relief pipe 1, a rotary joint 801 and a guide pipe 3, the pressure relief pipe 1 is connected with the inner cavity of the sleeve 6 through the exhaust pipe 606, the guide pipe 3 is arranged in the limiting cover 304 and connected with the hollow cavity 4, and the gas outlet end of the pressure relief pipe 1 is connected with the gas inlet end of the guide pipe 3 through the rotary joint 801.

[0044] The left and right ends of the bottom plate 1 are provided with mounting holes 101, mounting bolts 102 are inserted into the mounting holes 101, and lock nuts 103 are threadedly connected to the mounting bolts 102.

[0045] When the traction passenger elevator is detected, first, the bottom plate 1 is placed on the elevator car, at this time, the staff presses the supporting plate 203 downward, the supporting plate 203 drives the speed measuring wheel 303 to move downward stably under the guidance and limitation of the supporting guide column 2, and the second spring 604 is compressed, then the bottom plate 1 is manually moved to align the mounting holes 101 on the bottom plate 1 with the connecting holes on the elevator car and the wheel part of the speed measuring wheel 303 with the wheel part of the counter pulley, then the supporting plate 203 is loosened, at this time, the second spring 604 generates a pushing force to push the supporting plate 203 to drive the wheel part of the speed measuring wheel 303 to press the wheel part of the counter pulley under the guidance and limitation of the supporting guide column 2, then the mounting bolt 102 is inserted through the mounting hole 101 and the connecting hole and the lock nut 103 is screwed, so that the speed measuring device for detecting the traction passenger elevator is stably installed on the elevator car.

[0046] When the counter pulley works, the rotation of the rotation shaft 301 is driven by the friction between the counter pulley and the wheel part of the speed measuring wheel 303, the rotation shaft 301 rotates, and the speed measuring device 3 in the prior art can detect the lifting speed of the traction passenger elevator, at the same time, the rotation shaft 301 drives the crankshaft 305 to rotate, the crankshaft 305 drives the piston plate 502 to reciprocate in the piston cylinder 501 through the guide rod 503, when the piston plate 502 moves upward, external gas is drawn into the piston cylinder 501 through the guide pipe 1, when the piston plate 502 moves downward, the gas in the piston cylinder 501 is pressed by the piston plate 502 and discharged into the sleeve 6 through the guide pipe 2, the guide pipe 1 and the guide pipe 2 are both provided with one-way valves, so that the gas entering the sleeve 6 pushes the piston disc 2 to move upward, at the same time, the piston disc 2 pushes the connecting plate 3 upward through the supporting rod 2 to compress the second spring 4, so that the second spring 4 generates a pushing force after being compressed, and then pushes the supporting plate 2 to drive the speed measuring wheel 3 and the wheel part of the counter pulley to closely adhere to each other under the guidance and limitation of the supporting guide column 2, thereby improving the stability of the speed measuring device 3 in measuring the lifting speed of the traction passenger elevator.

[0047] When the air pressure entering into the sleeve 6 is greater than the safety value set by the pressure relief valve connected on the pressure relief pipe one 8, the pressure relief valve automatically opens to release pressure, at this time, part of the gas entering into the sleeve 6 passes through the pressure relief pipe one 8, the conduit three 802 into the hollow cavity 4, the conduit three 802 is provided with a one-way valve, and then the gas entering into the hollow cavity 4 pushes the piston disc one 401 to drive the clamping block 402 to be clamped in the clamping groove of the rotating shaft 301 at all times, so that the clamping block 402 can be effectively prevented from being removed from the clamping groove under the centrifugal force of the fast rotating rotating shaft one 301;

[0048] It should be noted that since the pressure relief valve is connected on the pressure relief pipe two 803, when the air pressure entering into the hollow cavity 4 is greater than the safety value set by the pressure relief valve, the pressure relief valve automatically opens to release pressure, so that the air pressure inside the hollow cavity 4 is kept constant;

[0049] The conduit two 505 is a telescopic hose, so the conduit two 505 will not interfere with the up and down movement of the support plate 203.

[0050] Embodiment 2:

[0051] Referring to Figure 1 , Figure 3 and Figure 5 , a kind of traction passenger elevator detection speed measuring device, substantially same as embodiment 1, further, exhaust pipe 606 is fixedly connected on sleeve 6, valve switch one 607 is connected on exhaust pipe 606, conduit four 804 is connected on pressure relief pipe two 803, valve switch two 805 is connected on conduit four 804.

[0052] After the speed measurement is completed, valve switch one 607 is opened, so that the gas in sleeve 6 is discharged outside sleeve 6 through exhaust pipe 606, at this time, the second spring 604 after compression generates a pushing force, pushes the connecting plate 603 to drive the piston disc two 601 to move stably downward under the guidance of the support guide column 2 Limit reset, then, the worker twists off the locking nut 103 for locking the bottom plate 1 on the elevator car by spanner, after the locking nut 103 is twisted off, the mounting bolt 102 is pulled out from the mounting hole 101 on the bottom plate 1, then, the traction passenger elevator detection speed measuring device is removed from the elevator car;

[0053] Because of the speed detection of traction passenger elevator, the wheel part of the speed detection wheel 303 is in contact with the wheel part of the counter pulley for a long time, which will cause serious wear and tear, so it needs to be replaced regularly. At this time, open the valve switch two 805, the gas in the hollow cavity 4 is discharged out of the hollow cavity 4 through the pressure relief pipe two 803 and the conduit four 804, then the staff holds the handle 405 and moves the piston disc one 401 away from the shaft center of the rotating shaft 301 through the connecting rod 404, compresses the first spring 403, at the same time, the clamping block 402 moves synchronously with the piston disc one 401, so that the clamping block 402 moves out of the clamping groove and retracts into the hollow cavity 4, then the staff moves the limiting cover 304 to the left, takes out the limiting cover 304 on the rotating shaft 301, and takes off the speed detection wheel 303 sleeved on the rotating shaft 301, so that the speed detection wheel 303 can be quickly disassembled and replaced, then the new speed detection wheel 303 is sleeved on the rotating shaft 301, and the limiting cover 304 is covered on the rotating shaft 301, at this time, the top end of the rotating shaft 301 extrudes the clamping block 402 to push the piston disc one 401 to move into the hollow cavity 4, compresses the first spring 403, and then the clamping block 402 retracts into the hollow cavity 4, when the limiting cover 304 pushes the speed detection wheel 303 to abut against the limiting disc 302, the clamping block 402 coincides with the clamping groove on the rotating shaft 301, at this time, the first spring 403 after compression generates a pushing force, which pushes the piston disc one 401 to drive the clamping block 402 to move out of the hollow cavity 4 and clamps in the clamping groove, so as to clamp and fix the speed detection wheel 303.

[0054] It should be noted that the pressure relief pipe one 8 is a telescopic hose, so the pressure relief pipe one 8 will not interfere with the disassembly of the limiting cover 304.

[0055] Example 3:

[0056] Reference Figure 1 , Figure 2 and Figure 6The speed detection device for detecting the traction passenger elevator is basically same as that in Embodiment 1, and further, the upper side of the supporting plate 203 is fixedly connected with a filter box 7, a plurality of groups of activated carbon filter screens 701 are inserted into the filter box 7, the filter box 7 is provided with an air inlet hole 702, and the air inlet end of the conduit one 504 is communicated with the inner cavity of the filter box 7; when the piston plate 502 reciprocates in the piston cylinder 501, the external gas is extracted through the conduit one 504 and enters the filter box 7 through the air inlet hole 702, the gas entering the filter box 7 contacts the activated carbon filter screen 701, because the activated carbon has a developed gap structure and rich microporous organization inside, therefore, when the gas contacts the activated carbon, the particulate matters in the air can be adsorbed into the micropores, and the gas is purified, then the purified gas enters the piston cylinder 501 through the conduit one 504, thereby prolonging the service life of the piston cylinder 501 and the piston plate 502, and avoiding that the particulate matters in the gas cause abrasion to the inner wall of the piston cylinder 501 when the piston plate 502 reciprocates in the piston cylinder 501.

[0057] Embodiment 4:

[0058] With reference to Figure 1 , Figure 2 The speed detection device for detecting the traction passenger elevator is basically same as that in Embodiment 1, and further, the upper side of the supporting plate 203 is fixedly connected with a filter box 7, a plurality of groups of activated carbon filter screens 701 are inserted into the filter box 7, the filter box 7 is provided with an air inlet hole 702, and the air inlet end of the conduit one 504 is communicated with the inner cavity of the filter box 7; when the piston plate 502 reciprocates in the piston cylinder 501, the external gas is extracted through the conduit one 504 and enters the filter box 7 through the air inlet hole 702, the gas entering the filter box 7 contacts the activated carbon filter screen 701, because the activated carbon has a developed gap structure and rich microporous organization inside, therefore, when the gas contacts the activated carbon, the particulate matters in the air can be adsorbed into the micropores, and the gas is purified, then the purified gas enters the piston cylinder 501 through the conduit one 504, thereby prolonging the service life of the piston cylinder 501 and the piston plate 502, and avoiding that the particulate matters in the gas cause abrasion to the inner wall of the piston cylinder 501 when the piston plate 502 reciprocates in the piston cylinder 501.

[0059] Embodiment 5:

[0060] With reference to Figure 1 , Figure 2A kind of traction passenger elevator detection speed measuring device, substantially same with example 1, further, the inner wall of two sets of sleeve 6 is equipped with two sets of limiting block 605, two sets of limiting block 605 are respectively fixedly connected on the inner wall of sleeve 6 upper and lower ends, when piston disc two 601 is located in initial state and contacts with the limiting block 605 of lower end;When piston assembly 5 moves through conduit one 504, conduit two 505 extracts external gas into sleeve 6, pushes piston disc two 601 to move to a certain distance upwards, then, limiting block 605 can be further realized to limit piston disc two 601, to prevent piston disc two 601 from moving upwards and separating from sleeve 6, affect normal use.

[0061] Example 6:

[0062] A kind of traction passenger elevator detection speed measuring device uses the method, using the following steps operation:

[0063] Step one: the whole bottom plate 1 is placed on the elevator car, then press down support plate 203, and manually move the whole bottom plate 1, so that the mounting hole 101 on the bottom plate 1 is aligned with the connecting hole on the elevator car, and the wheel part of speed measuring wheel 303 is aligned with the wheel part of counter pulley;

[0064] Step two: loosen support plate 203, so that the second spring 604 after compression generates thrust force, pushes support plate 203 to drive the wheel part of speed measuring wheel 303 to compress the wheel part of counter pulley, then, mounting bolt 102 is passed through mounting hole 101, connecting hole, and lock nut 103 is screwed on;

[0065] Step three: when counter pulley works, the friction between counter pulley and the wheel part of speed measuring wheel 303 drives the rotation of rotating shaft 301, then, the speed of traction passenger elevator is detected by speedometer 3;

[0066] Step four: through the movement of piston assembly 5, external gas is extracted and delivered into sleeve 6, gas pushes piston disc two 601 to drive connecting plate 603 to move upwards, compresses second spring 604, and the second spring 604 after compression generates thrust force, pushes support plate 203 to drive speed measuring wheel 303 and the wheel part of counter pulley to be closely attached;

[0067] Step five: through pressure relief, part of the gas in sleeve 6 is discharged into hollow cavity 4 through pressure relief pipe one 8, conduit three 802, and the gas after entering hollow cavity 4 pushes piston disc one 401 to drive clamping block 402 to be always clamped in the clamping groove of rotating shaft 301;

[0068] Step six: when the wheel of the speed measuring wheel 303 appears serious wear and needs to be replaced, open the valve switch two 805, then pull the piston plate one 401 away from the shaft of the rotating shaft 301, so that the clamping block 402 moves out of the card slot and retracts into the hollow cavity 4, then remove the limit cover 304 and the speed measuring wheel 303.

[0069] In the description provided herein, a number of specific details are described. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

[0070] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the prompt as equivalent embodiments of equivalent changes without departing from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall still fall within the scope of the present application.

Claims

1. A speed measuring device for detecting traction passenger elevators, comprising a base plate (1), characterized in that, Also includes: A support guide column (2) is fixedly connected to the base plate (1), and a support plate (203) is slidably connected to the support guide column (2); A connecting plate (603) is located on the upper side of the base plate (1). A second spring (604) is connected between the connecting plate (603) and the support plate (203). The base plate (1) is provided with a lifting assembly for driving the connecting plate (603) to lift and move. A speed measuring device (3) is fixedly installed on the support plate (203), and a rotating shaft (301) is fixedly connected to the output end of the speed measuring device (3); The crankshaft (305) and the limiting disc (302) are both fixedly sleeved on the rotating shaft (301); Speed ​​measuring wheel (303) is sleeved on the rotating shaft (301); A limiting cover (304) is fitted onto the rotating shaft (301) and is in contact with the outer wall of the speed measuring wheel (303). A hollow cavity (4) is provided on the limiting cover (304). Piston disc 1 (401) is slidably connected inside the hollow cavity (4); A snap-fit ​​block (402) is fixedly connected to the piston disc (401). A first spring (403) is connected between the piston disc (401) and the hollow cavity (4). The snap-fit ​​block (402) is snapped into a slot opened on the outer wall of the rotating shaft (301). A handle (405) is provided on the outer wall of the limiting cover (304). The handle (405) is fixedly connected to the piston disc (401) through the connecting rod (404). A sealing ring (9) is provided on the hollow cavity (4). The sealing ring (9) is in contact with the outer wall of the connecting rod (404). A pressure relief transmission assembly is connected to the lifting assembly. The lifting assembly is connected to the inner cavity of the hollow cavity (4) through the pressure relief transmission assembly. A pressure relief pipe (803) is connected to the hollow cavity (4). A piston assembly (5) is connected to the support plate (203), and the piston assembly (5) is rotatably connected to the crankshaft (305); A first conduit (504) is connected to the piston assembly (5), and the piston assembly (5) is connected to the lifting assembly via a second conduit (505); The piston assembly (5) includes a piston cylinder (501), a piston plate (502), and a guide rod (503). The piston cylinder (501) is fixedly connected to the support plate (203). The piston plate (502) is slidably connected to the piston cylinder (501). The guide rod (503) is rotatably connected to the piston plate (502). One end of the guide rod (503) away from the piston plate (502) is rotatably connected to the crankshaft (305). The first conduit (504) is connected to the piston cylinder (501). The lifting assembly includes two sets of sleeves (6), piston disc two (601), and support rod (602). Both sets of sleeves (6) are fixedly connected to the base plate (1). Piston disc two (601) is slidably connected inside the two sets of sleeves (6). One end of the support rod (602) is fixedly connected to piston disc two (601), and the other end is fixedly connected to connecting plate (603). One end of the conduit two (505) is connected to the inner cavity of the two sets of sleeves (6), and the other end is connected to the inner cavity of piston cylinder (501). One-way valves are provided on conduit one (504) and conduit two (505). The inner walls of the two sets of sleeves (6) are provided with two sets of limiting blocks (605). The two sets of limiting blocks (605) are respectively fixedly connected to the upper and lower ends of the inner wall of the sleeve (6). When the piston disc (601) is in the initial state, it is in contact with the lower limiting block (605). A filter box (7) is fixedly connected to the upper side of the support plate (203). Multiple sets of activated carbon filter screens (701) are inserted into the filter box (7). An air inlet (702) is opened on the filter box (7). The air inlet end of the first conduit (504) is connected to the inner cavity of the filter box (7). The pressure relief transmission assembly includes a pressure relief pipe (8), a rotary joint (801), and a conduit (802). The pressure relief pipe (8) is connected to the inner cavity of the sleeve (6) through an exhaust pipe (606). The conduit (802) is located inside the limiting cover (304) and is connected to the hollow cavity (4). The outlet end of the pressure relief pipe (8) is connected to the inlet end of the conduit (802) through the rotary joint (801).

2. The speed measuring device for detecting traction passenger elevators according to claim 1, characterized in that, The exhaust pipe (606) is fixedly connected to the sleeve (6), and a valve switch one (607) is connected to the exhaust pipe (606). A conduit four (804) is connected to the pressure relief pipe two (803), and a valve switch two (805) is connected to the conduit four (804).

3. The speed measuring device for detecting traction passenger elevators according to claim 1, characterized in that, A slider (204) is fixedly connected to the support plate (203), and a limiting groove (202) is opened on the support guide column (2). The slider (204) is slidably connected in the limiting groove (202), and the support guide column (2) is welded to the base plate (1) through a reinforcing plate (201).

4. The speed measuring device for detecting traction passenger elevators according to claim 1, characterized in that, The base plate (1) has mounting holes (101) at both the left and right ends. Mounting bolts (102) are inserted into the mounting holes (101), and locking nuts (103) are threaded onto the mounting bolts (102).

5. A method of using a speed measuring device for detecting traction passenger elevators, comprising the speed measuring device for detecting traction passenger elevators as described in any one of claims 1-4, characterized in that, The following steps are to be performed: Step 1: Place the base plate (1) on the elevator car as a whole, then press down the support plate (203), and manually move the base plate (1) as a whole so that the mounting hole (101) on the base plate (1) is aligned with the connection hole on the elevator car, and the wheel part of the speed measuring wheel (303) is aligned with the wheel part of the anti-rope wheel. Step 2: Loosen the support plate (203) so that the compressed second spring (604) generates thrust, pushing the support plate (203) to drive the wheel of the speed measuring wheel (303) to press against the wheel of the anti-rope wheel. Then, pass the mounting bolt (102) through the mounting hole (101) and the connecting hole, and tighten the lock nut (103). Step 3: When the anti-rope wheel is working, the friction between the anti-rope wheel and the speed measuring wheel (303) drives the rotating shaft (301) to rotate. Then, the speed measuring device (3) is used to detect the lifting speed of the traction passenger elevator. Step 4: The piston assembly (5) moves to extract external gas and deliver it into the sleeve (6). The gas pushes the piston disc (601) to drive the connecting plate (603) to move upward, compressing the second spring (604). The compressed second spring (604) generates thrust, which pushes the support plate (203) to drive the speed measuring wheel (303) to fit tightly against the wheel of the reverse rope wheel. Step 5: By depressurizing, some of the gas in the sleeve (6) is discharged into the hollow cavity (4) through the depressurization pipe 1 (8) and the conduit 3 (802). After entering the hollow cavity (4), the gas pushes the piston disc 1 (401) to drive the snap-fit ​​block (402) to always be snapped into the slot of the rotating shaft (301). Step 6: When the wheel of the speed measuring wheel (303) is severely worn and needs to be replaced, open valve switch 2 (805), and then pull piston disc 1 (401) to the side away from the axis of the rotating shaft (301) so that the locking block (402) moves out of the slot and retracts into the hollow cavity (4). Then, remove the limit cover (304) and the speed measuring wheel (303).

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