Disclosure of Invention
An object of the utility model is to provide an elevator anti-falling device can in time prevent falling of elevator car when the elevator takes place to fall.
The utility model discloses a following mode realizes: an elevator anti-falling device comprises an elevator car, blocking devices, spring hooks and an electronic lock, wherein the left side and the right side of the upper surface of the elevator car are respectively provided with at least one spring hook, a plurality of blocking devices are arranged on the wall of an elevator shaft corresponding to the positions of the spring hooks at equal distances from top to bottom, and the spring hooks can be hooked on the corresponding blocking devices when being popped out; the stopping device comprises two fixing pieces, two rollers and an anti-falling rope, wherein the fixing pieces are arranged on the wall of the elevator shaft, the rollers are fixed on the fixing pieces, and the anti-falling rope is arranged between the rollers;
the spring hook comprises a baffle, a U-shaped hook and a spring mechanism, the U-shaped hook is connected with the spring mechanism, the baffle is fixed on the U-shaped hook, the baffle is positioned at the left side of the spring mechanism, the spring mechanism comprises a spring shell, the inner space of the spring shell is separated into a first space and a second space by a partition plate, the first space is provided with a first spring and a first limiting plate, the second space is provided with a second spring and a second limiting plate, the right end of the U-shaped hook penetrates through the left side wall of the first space and the first spring and is fixed on the first limiting plate, one end of the first spring is fixed in the first space, the other end of the first spring is fixed on the first limiting plate, the right side surface of the first limiting plate is provided with a hollow circular tube, and the right end of the hollow circular tube penetrates through the partition plate and is fixed on the second limiting plate, seted up on the second limiting plate with the through-hole that the cavity pipe corresponds, embedding a spacing post in the cavity pipe, the right-hand member of spacing post is fixed in on the right side inner wall in second space, be provided with on the spacing post the second spring, second spring one end is fixed in on the right flank of second limiting plate, the other end is fixed in on the second space, elevator car's upper surface is seted up and is used for placing the recess of U type hook, be provided with an electronic lock on the spring hook side, the tapered end of electronic lock is used for injecing the baffle.
Further, the number of the spring hooks is two, four or six.
Furthermore, the middle part of the right side surface of the roller is provided with a threaded hole for manually retracting the anti-falling rope and a detachable handle used in cooperation.
Furthermore, the fixing piece is a speed reducing motor, and an output shaft of the speed reducing motor is fixedly connected with the roller.
Furthermore, the fixing piece is a bearing, an outer bearing of the bearing is fixed on the wall of the elevator shaft, and an inner bearing of the bearing is connected with the roller through a connecting rod.
Further, the spring hook is hinged to the upper surface of the elevator car, and the hinge is a gear hinge.
The beneficial effects of the utility model reside in that: by arranging the electronic lock, when the movement speed of the elevator car is abnormal, the electronic lock automatically retracts the lock head, so that the spring hook can automatically pop out the U-shaped hook and hook the blocking device, the car is prevented from falling, and the safety of personnel in the car is guaranteed; the roller of the utility model is provided with the threaded hole and the handle which is matched with the threaded hole, and the handle is convenient for the worker to manually withdraw the anti-falling rope; the utility model discloses a be provided with double spring structure among the spring mechanism, the cooperation is used and can be popped out fast U type hook, when one of them spring damages, another spring still can pop out U type hook, ensures spring mechanism's normal use in addition.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model provides an embodiment: an elevator anti-falling device comprises an elevator car 1, blocking devices 2, spring hooks 3 and an electronic lock 21, wherein the left side and the right side of the upper surface of the elevator car 1 are respectively provided with at least one spring hook 3, a plurality of blocking devices 2 are arranged on the wall of an elevator shaft corresponding to the positions of the spring hooks 3 at equal distances from top to bottom, the spring hooks 3 can be hooked on the corresponding blocking devices 2 when being popped out, when one blocking device 2 cannot stop the elevator car 1, and the elevator car 1 continuously drops, the spring hooks 3 continuously hook the corresponding blocking devices 2 on the lower layer until the elevator car 1 completely stops, and the safety of personnel in the elevator car 1 is improved; the arresting device 2 comprises two fixing pieces 4, two idler wheels 5 and an anti-falling rope 6, the fixing pieces are arranged on the wall of an elevator shaft, the idler wheels 5 are fixed on the fixing pieces 4, the anti-falling rope 6 is arranged between the idler wheels 5, when the spring hook 3 is popped out, the spring hook is hooked in the middle of the anti-falling rope 6, when the elevator falls, the higher the floor is, the larger the falling impact force of the elevator car 1 is, so that the length of the anti-falling rope 6 is correspondingly gradually shortened from top to bottom, when the elevator car 1 continuously falls, the anti-falling ropes 6 with different lengths can effectively weaken the falling impact force of the elevator car 1 until the elevator car 1 is arrested to fall, and the safety of personnel in the elevator car 1 is improved;
the spring hook 3 comprises a baffle 7, a U-shaped hook 8 and a spring mechanism 9, the U-shaped hook 8 is connected with the spring mechanism 9, the baffle 7 is fixed on the U-shaped hook 8, the baffle 7 is positioned at the left side of the spring mechanism 9, the spring mechanism 9 comprises a spring shell 10, the inner space of the spring shell 10 is separated into a first space 12 and a second space 13 by a partition plate 11, the first space 12 is provided with a first spring 14 and a first limit plate 15, the second space 13 is provided with a second spring 16 and a second limit plate 17, the right end of the U-shaped hook 8 passes through the left side wall of the first space 12 and the first spring 14 and is fixed on the first limit plate 15, one end of the first spring 14 is fixed on the left side inner wall of the first space 12, the other end of the first spring is fixed on the first limit plate 15, a hollow circular tube 18 is arranged on the right side surface of the first limit plate 15, the right end of the hollow circular tube 18 penetrates through the partition plate 11 and is fixed on the second limit plate 17, a through hole corresponding to the hollow circular tube 18 is formed in the second limit plate 17, a limit post 19 is embedded in the hollow circular tube 18, the right end of the limit post 19 is fixed on the right inner wall of the second space 13, the second spring 16 is arranged on the limit post 19, the limit post 19 is used for limiting the second spring 16 on one hand, so that the second spring 16 cannot generate position offset in the using process, on the other hand, the hollow circular tube 18 does not generate offset when moving downwards along the limit post 19, one end of the second spring 16 is fixed on the right side surface of the second limit plate 17, the other end of the second spring is fixed on the right side wall of the second space 13, and the double springs arranged in the spring mechanism 9 enable the U-shaped hook 7 to be rapidly ejected when in use on the one hand, on the other hand, the double-protection function is realized, when one spring is damaged, the other spring can still eject the U-shaped hook 7; a groove 20 for placing the U-shaped hook 8 is formed in the upper surface of the elevator car 1, an electronic lock 21 is arranged on the side edge of the spring hook 8, a lock head of the electronic lock 21 is used for limiting the baffle 7, the lock head extends out and then is blocked above and below the U-shaped hook 8, and the lock head is arranged at the front end of the baffle 7; when the elevator normally operates, the lock head of the electronic lock 21 extends out to limit the position of the baffle 7, the U-shaped hook 8 is in a contracted state, the first limit plate 15 abuts against the partition plate 11, so that the first spring 14 is in a stretched state, and the second limit plate 17 compresses the second spring 16 through the hollow circular tube 18, so that the limit column 19 is mostly embedded into the hollow circular tube 18; when the electronic lock 21 senses that the elevator car falls down, the lock head retracts, so that the first spring 14 contracts leftwards; the second spring 16 is popped out leftwards to drive the first limiting plate 15, the second limiting plate 17 and the hollow circular tube 18 to move leftwards together, the U-shaped hook 7 is popped out to hook the anti-falling rope 5, and the falling of the elevator car is blocked.
The spring hook quantity is two, four or six, and the optimal selection sets up four, makes elevator car atress is even, reduces the injury to the personnel in elevator car 1 when tenesmus.
The middle part of the right side surface of the roller 5 is provided with a threaded hole 22 for manually retracting the anti-falling rope 6 and a detachable handle 23 used in cooperation; the handle 23 is installed on the roller 5, and the handle 23 is rotated to rotate the roller 5 and withdraw the anti-falling rope 6.
The fixed part 4 is a speed reducing motor 24, and an output shaft of the speed reducing motor 24 is fixedly connected with the roller 5; the speed reducing motor 24 is started, the roller 5 is made to rotate, the anti-falling rope 6 is retracted, when the speed reducing motor 24 fails or is powered off, the handle 23 is installed on the roller 5, the handle 23 is rotated, the roller 5 is made to rotate, and the anti-falling rope 6 is retracted.
The fixing part 4 is a bearing 25, the outer bearing of the bearing 25 is fixed on the wall of the elevator shaft, and the inner bearing of the bearing 25 is connected with the roller 5 by a connecting rod 26. The handle 23 is installed on the roller 5, and the handle 23 is rotated to rotate the roller 5 and withdraw the anti-falling rope 6.
The spring hook 8 is hinged to the upper surface of the elevator car, the hinge joint is a multi-gear hinge joint, and the spring hook 2 hooks the falling-preventing rope 6 and then can be lifted upwards under the action of falling impact force of the elevator car 1 during use, so that the whole spring hook 8 is uniformly stressed, a certain buffering effect is achieved, and further injury of falling force of the elevator to people in the elevator car is reduced.
The utility model discloses a theory of operation does: the U-shaped hook is in a contraction state by using an auxiliary tool, and the electronic lock is started, so that the lock head extends out and blocks the upper part and the lower part of the U-shaped hook to block the baffle; when the elevator normally runs, the U-shaped hook is in a contracted state through the limiting baffle, the first limiting plate abuts against the partition plate, the first spring is in a stretched state, and the second limiting plate compresses the second spring under the action of the hollow circular tube, so that more limiting columns are embedded into the hollow circular tube; when the electronic lock senses that the elevator car falls down, the lock head is retracted, so that the first spring contracts leftwards; the second spring pops out leftwards, drives first limiting plate, second limiting plate and hollow pipe leftwards jointly, and the U-shaped hook that pops out for the U-shaped hook hooks the middle part of preventing weighing down the rope, blocks the tenesmus of elevator car, and when elevator car lasts the tenesmus, according to last and lower, the spring hook can also hook the arresting gear on the relevant position, stops completely until elevator car.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.