Elevator anti-falling braking mechanism and braking method thereof

Abstract

The elevator anti-falling brake mechanism comprises anti-falling brake lock frames, a locking mechanism and an elevator car, the back side of the elevator car is in sliding guide connection with an outer guide frame and an inner guide frame through a sliding clamping plate and a convex groove correspondingly, and the anti-falling brake lock frames are arranged in the middles of the two sides of the elevator car through mounting side lugs correspondingly; the anti-falling brake lock frame is arranged on the anti-falling limiting plate through a clamping groove in the inner side of the anti-falling brake lock frame, and two locking mechanisms are arranged on one side of the anti-falling brake lock frame. The back side of the lift car is provided with the convex groove and the sliding clamping plate, the convex groove and the sliding clamping plate can be in sliding guide connection with the inner guide frame and the outer guide frame correspondingly, the lifting stability of the lift car can be improved, the two sides of the top of the lift car are lifted through the two traction chains, and the lifting stability of the lift car can be guaranteed in the mode; the anti-falling brake lock frames are arranged on the two sides of the lift car, and the anti-falling brake lock frames are arranged on the anti-falling limiting plates through clamping grooves.

Description

Technical Field

[0001] The present invention relates to the technical field related to elevator anti-fall braking, and in particular to an elevator anti-fall braking mechanism and a braking method thereof. Background Art

[0002] The anti-fall device for elevators used in construction usually refers to the speed limiter, which is one of the safety control components in the elevator safety protection system. When the elevator car overspeeds for any reason during operation and all other safety protection devices do not work, the speed limiter and the safety clamp will work in conjunction to stop the elevator car, thereby reducing the occurrence of accidents caused by overspeeding of the elevator car;

[0003] For example, the authorized patent with publication number CN216512254U (elevator anti-fall structure): it is installed in the elevator shaft, and the elevator anti-fall structure includes a car located in the elevator shaft, a support plate is provided at the bottom of the car, a sliding sleeve that can slide relative to the support plate is installed on the support plate, and a driving mechanism is also installed at the bottom of the car, the output end of the driving mechanism is connected to the first end of the sliding sleeve, and the driving mechanism can drive the sliding sleeve to slide along the support plate; a slot group that cooperates with the sliding sleeve is provided on the wall of the elevator shaft. The sliding sleeve is driven by the driving mechanism provided at the bottom of the elevator, and the sliding sleeve is inserted into the slot to realize the clamping and positioning of the car, thereby effectively preventing the elevator from falling;

[0004] The above-mentioned prior art cannot brake and stop the elevator in time after overspeeding, the braking efficiency is low, and the compressive strength after braking is insufficient, which is easy to be damaged by overload. In addition, the elevator relies on a separate chain to lift and lower the elevator, which makes the lifting of the elevator not stable enough. The pressure of the elevator chain is too large during the braking process, and the braking effect is not stable enough. Summary of the invention

[0005] The object of the present invention is to provide an elevator anti-fall braking mechanism and a braking method thereof, so as to solve the problems proposed in the above-mentioned background technology that the elevator cannot be braked to stop in time after overspeeding, the braking efficiency is low, the compressive strength after braking is insufficient, it is easy to be damaged by overload, and the elevator relies on a separate chain to lift and lower, which makes the elevator's lifting and lowering not stable enough, the elevator chain pressure is too large during the braking process, and the braking effect is not stable enough.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an elevator anti-fall braking mechanism, comprising an anti-fall braking lock frame, a locking mechanism and a car, the back side of the car being connected to the outer guide frame and the inner guide frame sliding guide respectively through a sliding card plate and a convex groove, an anti-fall braking lock frame is provided at the center of both sides of the car through the installation side ears, the anti-fall braking lock frame is arranged on the anti-fall limit plate through the inner card groove thereof, one side of the anti-fall braking lock frame is provided with two locking mechanisms, the sliding card plate and the convex groove enable the car to perform double-limit sliding protection with the outer guide frame and the inner guide frame, thereby ensuring the stability of its lifting and lowering, the anti-fall braking lock frame is used to assist the lifting and lowering of the car, and can perform timely braking protection when it falls, and the locking mechanism is used to lock and fix the anti-fall braking lock frame and the anti-fall limit plate.

[0007] In a further embodiment, it also includes a traction chain, the ends of which are hoisted and fixed to the lifting holes on both sides of the top of the car, the traction chain is wound on the reel of the electric hoist, and the reel is located at the top of the elevator hanger, and the traction chain is used to lift and control the car through the electric hoist.

[0008] In a further embodiment, the bottom of the inner guide frame and the outer guide frame are connected to a support base, the support base is buried underground, and the bottom of the anti-fall limit plate is connected to the center of both sides of the top of the support base through a buffer sleeve, and the support base is used to stably support and place the inner guide frame and the outer guide frame 3.

[0009] In a further embodiment, the anti-fall limit plate is provided with a plurality of lock holes with the same spacing, and the inner wall of the lock hole is provided with a protective cushion layer, which is used to lock and fix with the locking mechanism through the lock hole, and the lock hole can be protected against deformation through the protective cushion layer.

[0010] In a further embodiment, the locking mechanism includes a hydraulic rod, a laser positioning head and a locking rod;

[0011] The cylinder end of the hydraulic rod is arranged on the outer side wall of the anti-fall brake lock frame, the laser positioning head is arranged at the end of the lock rod in the hydraulic rod, and the output end of the safety control module in the car is electrically connected to the hydraulic rod and the input end of the laser positioning head.

[0012] In a further embodiment, the distance between the two hydraulic rods on the same side is the same as the distance between the two locking holes, and the locking rods are inserted and locked into the locking holes.

[0013] An elevator anti-fall braking method uses the elevator anti-fall braking mechanism; comprising the following steps:

[0014] S1. Connect the back side of the car to the outer guide frame and the inner guide frame through the sliding card and the convex groove, and lock and fix the traction chain to the hanging holes on both sides of the top of the car;

[0015] S2. Fix the anti-fall brake lock frame with bolts at the center of both sides of the car through the installation side ears, and connect the anti-fall brake lock frame with the anti-fall limit plate sliding guide through the inner groove;

[0016] S3. The buffer sleeve is used to provide pressure buffer for the anti-fall brake lock frame, and the support base is used to stably support and place the elevator frame;

[0017] S4. When an elevator accident occurs, causing overspeed or falling, the safety control module intelligently controls the hydraulic rod and laser positioning head;

[0018] S5, detect the lock hole at the nearest position through the laser positioning head, and provide timely feedback to the hydraulic rod 5;

[0019] S6. The hydraulic rod controls the locking rod to be inserted into the locking hole, so that the anti-fall brake lock frame and the anti-fall limit plate are locked, thereby performing anti-fall brake control on the car.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The back side of the car of the invention is provided with a convex groove and a sliding card plate, and the convex groove and the sliding card plate can be respectively connected with the inner guide frame and the outer guide frame for sliding guidance, so that the stability of the car lifting can be improved. The car is lifted by two traction chains on both sides of the top. This method can ensure the stability of the car lifting and ensure that the elevator can stop smoothly during the braking process.

[0022] 2. The car of the invention is provided with anti-fall brake lock frames on both sides, and the anti-fall brake lock frames are arranged on the anti-fall limit plate through a slot, so that it can not only brake and lock, but also assist the lifting of the car to ensure the stability of the lifting. A locking rod controlled by a hydraulic rod is provided on one side of the anti-fall brake lock frame, and a laser positioning head is provided at the end of the locking rod. A plurality of locking holes are provided on the anti-fall limit plate, and the locking rod can be locked and fixed with the locking holes, so that the car can be braked and anti-fall controlled in time, the braking efficiency is high, and the braking is relatively stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an elevator anti-fall braking mechanism of the present invention;

[0024] Figure 2 is a top view of the car of the present invention;

[0025] Figure 3 It is a front view of the car of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the anti-falling brake lock frame and the anti-falling limit plate of the present invention;

[0027] Figure 5 It is a top view of the anti-fall brake lock frame of the present invention;

[0028] Figure 6 It is a side view of the anti-fall limiting plate of the present invention;

[0029] Figure 7 It is a structural schematic diagram of part A of the present invention.

[0030] In the figure: 1. inner guide frame; 2. traction chain; 3. outer guide frame; 4. anti-fall limit plate; 5. hydraulic rod; 6. anti-fall brake lock frame; 7. car; 8. buffer sleeve; 9. support base; 10. convex groove; 11. sliding card plate; 12. lifting hole; 13. protective cushion layer; 14. lock hole; 15. card slot; 16. installation side ear; 17. laser positioning head; 18. locking rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figure 1-7 An embodiment of the present invention is as follows: an elevator anti-fall brake mechanism, comprising an anti-fall brake lock frame 6, a locking mechanism and a car 7, the back side of the car 7 is connected to the outer guide frame 3 and the inner guide frame 1 through a sliding card plate 11 and a convex groove 10 respectively, and an anti-fall brake lock frame 6 is provided at the center of both sides of the car 7 through an installation side ear 16, the anti-fall brake lock frame 6 is arranged on the anti-fall limit plate 4 through the inner card groove 15, and two locking mechanisms are provided on one side of the anti-fall brake lock frame 6.

[0033] By means of the sliding card plate 11 and the convex groove 10, the car 7 can be provided with double limit sliding protection with the outer guide frame 3 and the inner guide frame 1, so as to ensure the stability of its lifting and lowering. The anti-fall brake lock frame 6 is used to assist the lifting and lowering of the car 7, and can provide timely braking protection when it falls. The locking mechanism is used to lock and fix the anti-fall brake lock frame 6 with the anti-fall limit plate 4.

[0034] Furthermore, it also includes a traction chain 2, the ends of which are hoisted and fixed to the lifting holes 12 on both sides of the top of the car 7, the traction chain 2 is wound on the reel of the electric hoist, and the reel is located at the top position of the elevator hanger, and the traction chain 2 is used to lift and control the car 7 through the electric hoist.

[0035] Furthermore, the bottom of the inner guide frame 1 and the outer guide frame 3 are connected to the support base 9, and the support base 9 is buried underground. The bottom of the anti-fall limit plate 4 is connected to the center of the top two sides of the support base 9 through the buffer sleeve 8, and the support base 9 is used to stably support and place the inner guide frame 1 and the outer guide frame 3.

[0036] Furthermore, the anti-fall limit plate 4 is provided with a plurality of lock holes 14 with the same spacing, and the inner wall of the lock hole 14 is provided with a protective cushion layer 13, which is used to lock and fix with the locking mechanism through the lock hole 14, and the lock hole 14 can be protected against deformation through the protective cushion layer 13.

[0037] Further, the locking mechanism includes a hydraulic rod 5, a laser positioning head 17 and a locking rod 18;

[0038] The cylinder end of the hydraulic rod 5 is arranged on the outer side wall of the anti-fall brake lock frame 6, and the laser positioning head 17 is arranged at the end of the locking rod 18 in the hydraulic rod 5. The output end of the safety control module in the car 7 is electrically connected to the hydraulic rod 5 and the input end of the laser positioning head 17. The locking rod 18 is inserted and locked with the locking hole 14 through the hydraulic rod 5. The laser positioning head 17 can locate and judge the locking hole 14 in the nearby position, so that it can intelligently and accurately control the hydraulic rod 5.

[0039] Furthermore, the spacing between the two hydraulic rods 5 on the same side is the same as the spacing between the two locking holes 14 , the locking rod 18 is inserted and locked with the locking hole 14 , and the two hydraulic rods 5 control the two locking rods 18 to be inserted and locked with the two locking holes 14 at the same time.

[0040] An elevator anti-fall braking method uses the elevator anti-fall braking mechanism; comprising the following steps:

[0041] S1, connect the back side of the car 7 to the outer guide frame 3 and the inner guide frame 1 through the sliding card plate 11 and the convex groove 10 respectively, and lock and fix the traction chain 2 to the hanging holes 12 on both sides of the top of the car 7;

[0042] S2. Fix the anti-fall brake lock frame 6 with bolts at the center of both sides of the car 7 through the mounting side ears 16, and connect the anti-fall brake lock frame 6 with the anti-fall limit plate 4 through the inner slot 15;

[0043] S3, the buffer sleeve 8 is used to provide pressure buffer for the anti-fall brake lock frame 6, and the support base 9 is used to stably support and place the elevator frame;

[0044] S4. When an elevator accident occurs, causing overspeed or falling, the hydraulic rod 5 and the laser positioning head 17 are intelligently controlled through the safety control module;

[0045] S5, detect the lock hole 14 at the nearest position through the laser positioning head 17, and feed back to the hydraulic rod 5 in time;

[0046] S6, the hydraulic rod 5 controls the locking rod 18 to be inserted into the locking hole 14, so that the anti-falling brake lock frame 6 and the anti-falling limit plate 4 are locked, thereby performing anti-falling brake control on the car 7.

[0047] Working principle: When in use, the back side of the car 7 is connected to the outer guide frame 3 and the inner guide frame 1 through the sliding card plate 11 and the convex groove 10, and the traction chain 2 is locked and fixed with the hanging holes 12 on both sides of the top of the car 7, and the anti-fall brake lock frame 6 is fixed to the center of the two sides of the car 7 by bolts through the installation side ears 16, and the anti-fall brake lock frame 6 is connected to the anti-fall limit plate 4 through the card groove 15 on its inner side. The buffer sleeve 8 is used to resist the pressure and buffer the anti-fall brake lock frame 6. The elevator frame is stably supported and placed by the support base 9. When an accident occurs in the elevator, resulting in overspeed or falling, the hydraulic rod 5 and the laser positioning head 17 are intelligently controlled by the safety control module. The laser positioning head 17 detects the lock hole 14 at the nearest position and promptly feeds back to the hydraulic rod 5, so that the hydraulic rod 5 controls the lock rod 18 to be inserted into the lock hole 14, so that the anti-fall brake lock frame 6 is locked with the anti-fall limit plate 4, thereby performing anti-fall brake control on the car 7.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An elevator anti-fall brake mechanism, comprising an anti-fall brake lock frame (6), a locking mechanism and a car (7), characterized in that: The back side of the car (7) is connected to the outer guide frame (3) and the inner guide frame (1) in a sliding and guiding manner through a sliding card plate (11) and a convex groove (10), respectively; an anti-fall brake lock frame (6) is provided at the center of both sides of the car (7) through mounting side ears (16); the anti-fall brake lock frame (6) is arranged on the anti-fall limit plate (4) through a card groove (15) on its inner side; and two locking mechanisms are provided on one side of the anti-fall brake lock frame (6).

2. An elevator anti-fall braking mechanism according to claim 1, characterized in that: It also comprises a traction chain (2), the ends of which are hoisted and fixed to the hoisting holes (12) on both sides of the top of the car (7), and the traction chain (2) is wound on the reel of the electric hoist, and the reel is located at the top of the elevator hanger.

3. The elevator anti-fall braking mechanism according to claim 1, characterized in that: The bottoms of the inner guide frame (1) and the outer guide frame (3) are both connected to a support base (9), and the support base (9) is buried underground. The bottom of the anti-fall limit plate (4) is connected to the center of both sides of the top of the support base (9) through a buffer sleeve (8).

4. The elevator anti-fall braking mechanism according to claim 1, characterized in that: The anti-falling limit plate (4) is provided with a plurality of locking holes (14) with the same spacing, and the inner side walls of the locking holes (14) are provided with a protective cushion layer (13).

5. The elevator anti-fall braking mechanism according to claim 1, characterized in that: The locking mechanism comprises a hydraulic rod (5), a laser positioning head (17) and a locking rod (18); The cylinder end of the hydraulic rod (5) is arranged on the outer side wall of the anti-fall brake lock frame (6), the laser positioning head (17) is arranged at the end of the lock rod (18) in the hydraulic rod (5), and the output end of the safety control module in the car (7) is electrically connected to the hydraulic rod (5) and the input end of the laser positioning head (17).

6. An elevator anti-fall braking mechanism according to claim 5, characterized in that: The distance between the two hydraulic rods (5) on the same side is the same as the distance between the two locking holes (14), and the locking rod (18) is inserted and locked with the locking hole (14).

7. An elevator anti-fall braking method, characterized in that: An elevator anti-fall braking mechanism according to any one of claims 1 to 6 is used; comprising the following steps: S1, connecting the back side of the car (7) to the outer guide frame (3) and the inner guide frame (1) through the sliding card plate (11) and the convex groove (10) respectively, and locking and fixing the traction chain (2) to the hanging holes (12) on both sides of the top of the car (7); S2. Fix the anti-fall brake lock frame (6) with bolts at the center of both sides of the car (7) through the mounting side ears (16), and connect the anti-fall brake lock frame (6) with the anti-fall limit plate (4) through the inner groove (15); S3, using the buffer sleeve (8) to provide pressure resistance and buffering for the anti-fall brake lock frame (6), and using the support base (9) to stably support and place the elevator frame; S4. When an elevator accident occurs, causing overspeed or falling, the hydraulic rod (5) and the laser positioning head (17) are intelligently controlled through the safety control module; S5, using the laser positioning head (17) to detect the lock hole (14) at the nearest position, and timely feedback to the hydraulic rod (5); S6. The hydraulic rod (5) controls the locking rod (18) to be inserted into the locking hole (14), so that the anti-falling brake lock frame (6) and the anti-falling limit plate (4) are locked, thereby performing anti-falling brake control on the car (7).

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