CN214269829U

CN214269829U - Fall-preventing device for van elevator

Info

Publication number: CN214269829U
Application number: CN202120339835.5U
Authority: CN
Inventors: 李贞�
Original assignee: Jinan Engineering Vocational Technical College
Current assignee: Jinan Engineering Vocational Technical College
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-09-24
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a van-type elevator is with anti-falling device, including elevartor shaft, car, install the guide rail on the both sides wall of elevartor shaft, the quantity of guide rail is two on the lateral wall of elevartor shaft, is equipped with the pinion rack between two guide rails, the pinion rack is installed on the lateral wall of elevartor shaft, a plurality of speedtransmitter are installed to the both sides evenly distributed of pinion rack, U type frame is installed to the both sides of car, the quantity of U type frame and the quantity one-to-one of guide rail, U type frame rotates installs the gyro wheel, the butt between gyro wheel and the guide rail, install the V on the U type frame and stop, the V is stopped and is located the both sides of gyro wheel, and wherein the brake line that the V stopped is connected with the pneumatic cylinder, the pneumatic cylinder is installed on U type frame. The utility model discloses an at car top installation locking mechanical system and car bottom buffer gear, can play the duplicate protection effect when the car takes place to fall, prevent to take place to fall because of the car and cause personnel's damage, improved the security of elevator.

Description

Fall-preventing device for van elevator

Technical Field

The utility model belongs to the technical field of elevator safety, in particular to van-type elevator is with anti-falling device.

Background

An elevator is a permanent transport device serving a number of specific floors in a building, the cars of which move on at least two rigid tracks perpendicular to the horizontal or inclined at an angle of less than 15 ° to the vertical, also of the stepped type, the tread plates being mounted on a track, running continuously, known as an escalator or a moving walkway, serving the fixed lifting device of the given floor. A vertical lift elevator has a car that travels between at least two vertical rows of rigid guide rails or guide rails inclined at an angle of less than 15 DEG, the car being sized and configured to facilitate passenger access or loading and unloading of cargo.

The elevator is because the elevator often needs to move at higher height in the in-process of using, when meetting the power failure or other unexpected circumstances, probably can take place to fall, causes life danger to the passenger, and the safety protection measure among the prior art is comparatively single moreover, and the consequence is beyond the scope of thought when single measure is out of order, and the security is relatively poor.

Disclosure of Invention

The utility model aims at overcoming the not enough among the prior art, provide a falling prevention device for van elevator, through at car roof installation locking mechanism and car bottom buffer gear, can play the duplicate protection effect when the car takes place to fall, prevent to cause personnel's damage because of the car takes place to fall, improved the security of elevator.

In order to realize the purpose, the utility model discloses a technical scheme is:

the utility model provides a van-type elevator is with anti-falling device, includes elevartor shaft, car, install the guide rail on the both sides wall of elevartor shaft, the quantity of guide rail is two on the lateral wall of elevartor shaft, be equipped with the pinion rack between two guide rails, the pinion rack is installed on the lateral wall of elevartor shaft, a plurality of speedtransmitter are installed to the both sides evenly distributed of pinion rack, U type frame is installed to the both sides of car, the quantity of U type frame and the quantity one-to-one of guide rail, U type frame rotates and installs the gyro wheel, and the butt between gyro wheel and the guide rail, install the V on the U type frame and stop, the V is located the both sides of gyro wheel, and wherein the brake line that the V stopped is connected with the pneumatic cylinder, the pneumatic cylinder is installed on U type frame, car top installs locking mechanism, and locking mechanism can prevent falling of car with the cooperation of pinion rack, the car top still installs battery, The controller, battery and controller electric connection, the solenoid valve in the hydraulic circuit of controller can be to the pneumatic cylinder is controlled, speed sensor and controller wireless connection, buffer gear is installed to the car bottom, falls to the bottom when the car and can reduce the impact force under buffer gear's effect, has improved the security of elevator.

Preferably, the locking mechanism comprises an electromagnet, a vertical plate, a guide rod, a first spring and a pawl, the electromagnet is installed on the car and electrically connected with the controller, the vertical plate is arranged on two sides of the electromagnet and installed on the car, the guide rod penetrates through the vertical plate, one end of the guide rod is magnetically attracted on the electromagnet, the pawl is installed at the other end of the guide rod, the first spring is sleeved on the periphery of the guide rod, one end of the first spring is fixedly installed on the vertical plate, the other end of the first spring is fixedly connected with the pawl, when the car falls down rapidly, data detected by speed sensors on two sides of the toothed plate are larger than normal data, abnormal signals are transmitted to the controller, the controller controls the hydraulic cylinder to work, the roller and the guide rail are changed into sliding contact from original rolling contact through V brake limiting rotation of the roller, so that the falling speed of the car is reduced, the controller controls the electromagnet to be powered off, the guide rod does not attract on the electromagnet any more, the guide rod drives the lower pawl to move to one side of the toothed plate under the action of the first spring, finally, the pawl is meshed with gear teeth on the toothed plate, the lift car does not continuously fall downwards, and the locking of the lift car is achieved.

Preferably, a circular plate is installed at one end, close to the electromagnet, of the guide rod, the contact area of the guide rod and the electromagnet is increased through the circular plate, the guide rod can move quickly, and the working efficiency of the locking mechanism is improved.

Preferably, the buffer mechanism comprises a sleeve, a rubber plate and a piston rod, the sleeve is arranged at the bottom of the car, the piston rod is movably arranged in the sleeve, the end part of the piston rod extends out of the sleeve, the rubber plate is arranged at one end of the piston rod far away from the sleeve, the size of the rubber plate is smaller than that of the cage, the periphery of the piston rod is sleeved with a third spring, one end of the third spring is arranged on the sleeve, the other end of the third spring is arranged on the rubber plate, the second spring is arranged in the sleeve, one end of the second spring is arranged on the top of the piston rod, the other end of the second spring is arranged on the side wall of the top of the sleeve, when the car weighs down the bottom that falls the elevartor shaft, at first the current elevartor shaft contact of rubber slab, the third spring is extruded to the rubber slab during upward movement, drives the piston rod upward movement extrusion second spring simultaneously, reaches the buffering and inhales the effect of shake.

Preferably, an expansion mechanism is installed on an elevator shaft side wall, the expansion mechanism comprises an air bag and a movable plate, a groove is formed in the elevator shaft side wall, one end of the movable plate is rotated and installed in the groove, an upright post is installed at the bottom of the movable plate, a switch is installed below the groove, a tension spring is installed between the elevator shaft and the movable plate, the air bag is installed at the bottom of the elevator shaft, the air bag is electrically connected with the switch, the elevator car drives the movable plate to rotate in the groove when the elevator car falls downwards to contact the movable plate, the upright post rotates along with the movable plate, the air bag is opened to expand when the upright post contacts the switch, the elevator car is buffered, and the safety of the device is further improved.

The utility model has the advantages that:

1) through at car top installation locking mechanism and car bottom buffer gear, can play the duplicate protection effect when the car takes place to fall, prevent to cause personnel's damage because of the car takes place to fall, improved the security of elevator.

2) The circular plate is arranged at one end, close to the electromagnet, of the guide rod, the contact area of the guide rod and the electromagnet is increased through the circular plate, the guide rod can move quickly, and the working efficiency of the locking mechanism is improved.

3) The elevator shaft is provided with an expansion mechanism on one side wall, when the car falls downwards to contact with the movable plate, the car drives the movable plate to rotate in the groove, the stand rotates along with the movable plate, when the stand contacts with the switch, the air bag is opened to expand to buffer the car, and the safety of the device is further improved.

Drawings

Fig. 1 is a schematic structural view of a falling-proof device for a van elevator.

Fig. 2 is a plan view of the anti-falling device for the van elevator.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is the utility model relates to an elevator shaft lateral wall structure sketch map among anti-falling device for van-type elevator.

In the figure: 1. an elevator shaft; 2. a car; 3. an electromagnet; 4. a vertical plate; 5. a guide bar; 6. a first spring; 7. a pawl; 8. a storage battery; 9. a controller; 10. a circular plate; 11. a U-shaped frame; 12. a sleeve; 13. a second spring; 14. a rubber plate; 15. a piston rod; 16. a third spring; 17. an air bag; 18. a movable plate; 19. a column; 20. a tension spring; 21. a guide rail; 22. a toothed plate; 23. v, braking; 24. a hydraulic cylinder; 25. a roller; 26. a speed sensor; 27. and (4) switching.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-4, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The utility model provides a falling prevention device for van elevator, includes elevartor shaft 1, car 2, install guide rail 21 on the both sides wall of elevartor shaft 1, the quantity of guide rail 21 is two on the lateral wall of elevartor shaft 1, be equipped with pinion rack 22 between two guide rail 21, pinion rack 22 is installed on the lateral wall of elevartor shaft 1, a plurality of speedtransmitter 26 are installed to the both sides evenly distributed of pinion rack 22, U type frame 11 is installed to the both sides of car 2, the quantity of U type frame 11 and the quantity one-to-one of guide rail 21, U type frame 11 rotates installs gyro wheel 25, butt between gyro wheel 25 and the guide rail 21, install V on the U type frame 11 and stop 23, V stops 23 and is located the both sides of gyro wheel 25, wherein the brake line in V23 is connected with pneumatic cylinder 24, pneumatic cylinder 24 installs on U type frame 11, car 2 top is installed locking mechanism, and pinion rack 22 cooperation can prevent falling of car 2, battery 8, controller 9 are still installed at 2 tops of car, battery 8 and controller 9 electric connection, controller 9 can control the solenoid valve in the hydraulic circuit of pneumatic cylinder 24, speed sensor 26 and controller 9 wireless connection, buffer gear is installed to 2 bottoms of car, and 2 drops to the bottom when the car and can reduce the impact force under buffer gear's effect, has improved the security of elevator.

The locking mechanism comprises an electromagnet 3, a vertical plate 4, guide rods 5, a first spring 6 and a pawl 7, the electromagnet 3 is installed on the car 2 and electrically connected with a controller 9, the vertical plate 4 is arranged on two sides of the electromagnet 3 and installed on the car 2, the guide rods 5 penetrate through the vertical plate 4, one end of each guide rod is magnetically attracted on the electromagnet 3, the pawl 7 is installed at the other end of the guide rod 5, the first spring 6 is sleeved on the periphery of the guide rod 5, one end of the first spring 6 is fixedly installed on the vertical plate 4, the other end of the first spring is fixedly connected with the pawl 7, when the car 2 falls rapidly downwards, data detected by speed sensors 26 on two sides of a toothed plate 22 is larger than normal data, abnormal signals are transmitted to the controller 9, the controller 9 controls a hydraulic cylinder 24 to work, the rotation of a roller 25 is limited by a V23, so that the roller 25 and the guide rail 21 are changed into sliding contact from original rolling contact, thereby reduced the speed that car 2 falls, meanwhile, 3 outage of controller 9 control electro-magnet, guide arm 5 no longer magnetism is inhaled on electro-magnet 3, and guide arm 5 drives down pawl 7 to the lateral movement of pinion rack 22 under the effect of first spring 6, and the teeth of a cogwheel meshing on final pawl 7 and the pinion rack 22, car 2 no longer continues to fall downwards, realizes stopping at the lock of car 2, guide arm 5 is close to the one end of electro-magnet 3 and installs plectane 10, has increased the area of contact with electro-magnet 3 through plectane 10, is favorable to guide arm 5 rapid movement, improves locking mechanism's work efficiency.

The buffer mechanism comprises a sleeve 12, a rubber plate 14 and a piston rod 15, wherein the sleeve 12 is arranged at the bottom of the car 2, the piston rod 15 is movably arranged inside the sleeve 12, the end part of the piston rod 15 extends out of the sleeve 12, the rubber plate 14 is arranged at one end of the piston rod 15 far away from the sleeve 12, the size of the rubber plate 14 is smaller than that of the car 2, a third spring 16 is sleeved on the periphery of the piston rod 15, one end of the third spring 16 is arranged on the sleeve 12, the other end of the third spring is arranged on the rubber plate 14, a second spring 13 is arranged inside the sleeve 12, one end of the second spring 13 is arranged at the top of the piston rod 15, the other end of the second spring is arranged on the side wall of the top of the sleeve 12, when the car 2 falls to the bottom of the elevator hoistway 1, firstly the rubber plate 14 is in contact with the elevator hoistway 1, and the rubber plate 14 presses the third spring 16 when moving upwards, meanwhile, the piston rod 15 is driven to move upwards to extrude the second spring 13, so that the effects of buffering and absorbing shock are achieved.

1 side wall mounting of elevartor shaft has the expanding mechanism, the expanding mechanism includes gasbag 17, fly leaf 18, seted up the recess on the 1 lateral wall of elevartor shaft, the one end of fly leaf 18 is rotated and is installed in the recess, stand 19 is installed to the bottom of fly leaf 18, switch 27 is installed to the below of recess, install extension spring 20 between elevartor shaft 1 and the fly leaf 18, gasbag 17 is installed in the bottom of elevartor shaft 1, gasbag 17 and switch 27 electric connection, when car 2 falls downwards and contacts fly leaf 18, car 2 drives fly leaf 18 and rotates in the recess, and stand 19 rotates thereupon, and when stand 19 contacted switch 27, gasbag 17 opened the inflation, cushions car 2, has further improved the security of this device.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A falling prevention device for a van elevator comprises an elevator shaft and a car, wherein guide rails are installed on two side walls of the elevator shaft, the number of the guide rails on the side wall of the elevator shaft is two, a toothed plate is arranged between the two guide rails and installed on the side wall of the elevator shaft, the falling prevention device is characterized in that a plurality of speed sensors are evenly distributed and installed on two sides of the toothed plate, U-shaped frames are installed on two sides of the car, the number of the U-shaped frames corresponds to the number of the guide rails one by one, rollers are rotatably installed on the U-shaped frames, the rollers are abutted against the guide rails, a V brake is installed on the U-shaped frames and located on two sides of the rollers, wherein a brake wire in the V brake is connected with a hydraulic cylinder which is installed on the U-shaped frames, a locking mechanism is installed on the top of the car, a storage battery and a controller are also installed on the top of the car, and the storage battery is electrically connected with the controller, the speed sensor is wirelessly connected with the controller, and a buffer mechanism is installed at the bottom of the car.

2. The anti-falling device for the van elevator is characterized in that the locking mechanism comprises an electromagnet, a vertical plate, a guide rod, a first spring and a pawl, the electromagnet is installed on the car and electrically connected with the controller, the vertical plate is arranged on two sides of the electromagnet and installed on the car, the guide rod penetrates through the vertical plate, one end of the guide rod is magnetically attracted to the electromagnet, the pawl is installed at the other end of the guide rod, the first spring is sleeved on the periphery of the guide rod, one end of the first spring is fixedly installed on the vertical plate, and the other end of the first spring is fixedly connected with the pawl.

3. A fall arrest device for a van-type elevator according to claim 2, wherein a circular plate is mounted to the end of the guide rod adjacent to the electromagnet.

4. The anti-falling device for the elevator car as claimed in claim 1, wherein the buffering mechanism comprises a sleeve, a rubber plate and a piston rod, the sleeve is mounted at the bottom of the car, the piston rod is movably mounted inside the sleeve, the end of the piston rod extends out of the sleeve, the rubber plate is mounted at one end of the piston rod far away from the sleeve, the size of the rubber plate is smaller than that of the car, a third spring is sleeved on the periphery of the piston rod, one end of the third spring is mounted on the sleeve, the other end of the third spring is mounted on the rubber plate, a second spring is arranged inside the sleeve, one end of the second spring is mounted at the top of the piston rod, and the other end of the second spring is mounted on the side wall of the top of the sleeve.

5. The anti-falling device for the elevator car as claimed in claim 1, wherein an expansion mechanism is installed on one side wall of the elevator shaft, the expansion mechanism comprises an air bag and a movable plate, a groove is formed in the side wall of the elevator shaft, one end of the movable plate is rotatably installed in the groove, a column is installed at the bottom of the movable plate, a switch is installed below the groove, a tension spring is installed between the elevator shaft and the movable plate, the air bag is installed at the bottom of the elevator shaft, and the air bag is electrically connected with the switch.