Anti-falling structure for improving safety of elevator

Abstract

The utility model relates to the technical field of elevator falling prevention, in particular to an anti-falling structure for improving elevator safety, which comprises an elevator body and a plurality of guide rails arranged in an elevator shaft. An upper supporting plate is arranged on the top of the elevator body. A lower supporting plate is arranged at the bottom of the elevator body. A plurality of mounting frames are arranged on the opposite sides of the lower supporting plate and the upper supporting plate; symmetrical hydraulic cylinders are arranged in the mounting frame, speed detection is conducted through a speed sensor, data are fed back to a controller, the controller conducts operation judgment, and when the speed exceeds a safety value, the controller controls the telescopic ends of the hydraulic cylinders to work to drive a supporting block and a push rod to move, and further a friction plate is driven to move; and the friction plates abut against the side walls of the guide rails, so that the friction force between the friction plates and the guide rails is increased, speed reduction is conducted till the elevator body is stopped by means of the friction force, and the supporting blocks can better protect the telescopic ends of the hydraulic cylinders in the working process.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator anti-falling, in particular to an anti-falling structure for improving the safety of elevators. Background Art

[0002] A vertical elevator is a type of transportation equipment that transports pedestrians or goods vertically. A vertical elevator has a cabin for carrying passengers in and out or loading and unloading goods. However, if the elevator accidentally falls during daily use, its safety will be reduced.

[0003] Chinese patent CN221191182U discloses an elevator with an anti-fall protection structure, including a car, a guide rail and an auxiliary mechanism, the auxiliary mechanism including a hanger, a mounting arm, a roller, a speed sensor, a first hydraulic cylinder, a first friction plate and a matching device. In the event of an accidental fall, the hanger and the car will accelerate to fall. At this time, the speed sensor performs speed detection and feeds the data back to the control system. The control system performs calculation and judgment. When the speed exceeds the safety value, the control system controls the first hydraulic cylinder to move, push out the first friction plate, and abut it on the side of the guide rail. By virtue of the friction between the first friction plate and the guide rail, the elevator is decelerated until the hanger is stopped by the friction force. In this way, when in use, in the event of an accidental fall, the anti-fall protection capability of the elevator is improved, the safety is improved, and it is more conducive to safe use.

[0004] The aforementioned device uses a hydraulic cylinder to drive the first and second friction plates, creating friction with the guide rails, thereby creating resistance and decelerating the elevator until the hanger comes to a complete stop due to friction. However, this device lacks any protective structure for the telescopic ends of the hydraulic cylinders. Under the intense friction, these ends are easily damaged, making them ineffective in preventing accidental falls. Utility Model Content

[0005] To address the above problems, an anti-fall structure is provided to improve the safety of elevators. The speed is detected by a speed sensor and fed back to the controller. After calculation, if the speed exceeds the limit, the controller controls the extension and retraction of the hydraulic cylinder, pushing the support block and the push rod to move the friction plate, so that it contacts the guide rail and increases the friction to slow down the elevator body until it stops. At the same time, the support block protects the hydraulic cylinder.

[0006] In order to solve the problems of the existing technology, the utility model provides an anti-fall structure for improving the safety of elevators, comprising an elevator body and a plurality of guide rails arranged in the elevator shaft; an upper support plate is provided on the top of the elevator body; a lower support plate is provided on the bottom of the elevator body; a plurality of mounting frames are provided on opposite sides of the lower support plate and the upper support plate; symmetrical hydraulic cylinders are provided inside the mounting frames; support blocks are provided at the telescopic ends of the hydraulic cylinders, and a slide groove for the support blocks to slide is provided inside the mounting frames; a push rod is provided on the side wall of the support block; a friction plate is provided at one end of the push rod to contact the side wall of the guide rail.

[0007] Preferably, connecting plates are provided on both side outer walls of the mounting frame; symmetrical fixing blocks are provided on the side walls of the connecting plates; a rotating shaft is rotatably provided between the two fixing blocks; and rollers that cooperate with the guide rails are provided on the outside of the rotating shaft.

[0008] Preferably, symmetrical gears are provided on the outside of the rotating shaft; two groups of symmetrical spring telescopic rods are provided on the side walls of the connecting plate; and tooth blocks that cooperate with the gears are provided at the telescopic ends of the spring telescopic rods.

[0009] Preferably, a connecting block is provided on the side wall of the friction plate; sliding blocks are provided on both sides of the connecting block; and an extrusion block for extruding the gear block is provided on the outer wall of the sliding block.

[0010] Preferably, a controller and a speed sensor are provided on the top of the upper support plate; the controller and the speed sensor are electrically connected via a wire.

[0011] Preferably, a steel wire rope for driving the elevator body to move is provided on the top of the upper support plate;

[0012] One end of the steel wire rope is connected with a driving device.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The speed is detected by the speed sensor and the data is fed back to the controller. The controller performs calculations and judgments. When the speed exceeds the safety value, the controller controls the telescopic end of the hydraulic cylinder to drive the support block and push rod to move, and further drives the friction plate to move until the friction plate conflicts with the side wall of the guide rail, thereby increasing the friction between the friction plate and the guide rail, slowing down, and finally stopping the elevator body by friction. The support block can better protect the telescopic end of the hydraulic cylinder when working.

[0015] 2. The extrusion block squeezes the tooth block toward the gear, causing the tooth block to jam the gear and further lock the rotating shaft and roller. At this time, the roller no longer rolls, thereby increasing the friction between the roller and the guide rail. In conjunction with the friction plate, it can more effectively prevent the elevator body from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the overall structure of an anti-fall structure for improving the safety of elevators.

[0017] Figure 2 The present invention is a structural diagram of a speed sensor and a controller in an anti-fall structure for improving elevator safety.

[0018] Figure 3 The present invention is a structural diagram of an installation frame in an anti-fall structure for improving elevator safety.

[0019] Figure 4 The present invention is a structural schematic diagram of a friction plate in an anti-fall structure for improving elevator safety.

[0020] Figure 5 The present invention is a structural diagram of a rotating shaft and a roller in an anti-fall structure for improving the safety of an elevator.

[0021] Figure 6 The present invention is a structural diagram of a slider and an extrusion block in an anti-fall structure for improving elevator safety.

[0022] The numbers in the figure are: 1. Elevator body; 2. Lower support plate; 3. Mounting frame; 4. Guide rail; 5. Upper support plate; 6. Wire rope; 7. Controller; 8. Speed ​​sensor; 9. Connecting plate; 10. Friction plate; 11. Support block; 12. Push rod; 13. Hydraulic cylinder; 14. Slider; 15. Connecting block; 16. Fixed block; 17. Rotating shaft; 18. Gear; 19. Roller; 20. Extrusion block; 21. Spring telescopic rod; 22. Gear block. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figures 1 to 6 As shown, the utility model provides:

[0025] A fall prevention structure for improving elevator safety comprises an elevator body 1 and a plurality of guide rails 4 arranged in the elevator shaft; an upper support plate 5 is provided on the top of the elevator body 1; a lower support plate 2 is provided at the bottom of the elevator body 1; a plurality of mounting frames 3 are provided on opposite sides of the lower support plate 2 and the upper support plate 5; symmetrical hydraulic cylinders 13 are provided inside the mounting frames 3; support blocks 11 are provided at the telescopic ends of the hydraulic cylinders 13, and a slide groove for sliding the support blocks 11 is provided inside the mounting frames 3; a push rod 12 is provided on the side wall of the support block 11; a friction plate 10 is provided at one end of the push rod 12 for contacting the side wall of the guide rail 4.

[0026] By moving the telescopic end of the hydraulic cylinder 13, the support block 11 and the push rod 12 are driven to move, and the friction plate 10 is further driven to move until the friction plate 10 conflicts with the side wall of the guide rail 4, thereby increasing the friction between the friction plate 10 and the guide rail 4, and slowing down until the elevator body 1 is stopped by the friction force. The support block 11 can better protect the telescopic end of the hydraulic cylinder 13 during operation to prevent the telescopic end of the hydraulic cylinder 13 from being damaged.

[0027] Figure 5 As shown, connecting plates 9 are provided on both side outer walls of the mounting frame 3; symmetrical fixing blocks 16 are provided on the side walls of the connecting plates 9; a rotating shaft 17 is rotatably provided between the two fixing blocks 16; and a roller 19 is provided on the outside of the rotating shaft 17 to cooperate with the guide rail 4.

[0028] The coordinated cooperation of the rollers 19 and the guide rails 4 enables the elevator body 1 to achieve smoother and more stable operation during the moving operation, which not only improves the operating efficiency of the elevator but also ensures the stability of the elevator during the up and down movement.

[0029] like Figure 5 As shown, symmetrical gears 18 are provided on the outside of the rotating shaft 17; two sets of symmetrical spring telescopic rods 21 are provided on the side walls of the connecting plate 9; and tooth blocks 22 that cooperate with the gears 18 are provided at the telescopic ends of the spring telescopic rods 21.

[0030] By moving the tooth block 22 toward the gear 18 , the tooth block 22 clamps the gear 18 , further locking the rotating shaft 17 and the roller 19 . At this time, the roller 19 no longer rolls, thereby increasing the friction between the roller 19 and the guide rail 4 .

[0031] like Figure 5 and Figure 6 As shown, a connecting block 15 is provided on the side wall of the friction plate 10 ; sliders 14 are provided on both sides of the connecting block 15 ; and an extrusion block 20 for extruding the tooth block 22 is provided on the outer wall of the slider 14 .

[0032] The friction plate 10 can effectively drive the connecting block 15 and the sliding block 14 to move. When the sliding block 14 moves, it further drives the extrusion block 20 to move. During the movement of the extrusion block 20, the extrusion block 20 extrudes the tooth block 22, thereby driving the tooth block 22 to move towards the gear 18, and finally clamping the gear 18, so that the gear 18 cannot rotate.

[0033] As shown in Figure 2 The top of the upper support plate 5 is provided with a controller 7 and a speed sensor 8; the controller 7 and the speed sensor 8 are electrically connected through wires.

[0034] The speed sensor 8 detects the speed and feeds back the data to the controller 7, and the controller 7 performs operation and judgment. When the speed exceeds the safety value, the controller 7 controls the extension end of the hydraulic cylinder 13 to work.

[0035] As shown in Figure 1 The top of the upper support plate 5 is provided with a steel wire rope 6 for driving the elevator body 1 to move; one end of the steel wire rope 6 is connected with a driving device.

[0036] Through the traction force of the driving device cooperating with the steel wire rope 6, the elevator body 1 can realize stable and efficient up and down movement. The driving device is an elevator traction machine, and the elevator traction machine is a mature prior art, so the specific working principle and structure are not described too much.

[0037] Working principle: when the elevator works normally, the driving device cooperates with the steel wire rope 6 to drive the elevator body 1 to move up and down, at the same time, the roller 19 cooperates with the guide rail 4 to work, so that the elevator body 1 moves more smoothly and stably, when the elevator body 1 suddenly falls, the elevator body 1 will accelerate to fall, at this time, the speed sensor 8 detects the speed and feeds back the data to the controller 7, the controller 7 calculates and discriminates, when the speed exceeds the safety value, the controller 7 controls the extension end of the hydraulic cylinder 13 to work to drive the supporting block 11 and the push rod 12 to move, further drive the friction plate 10 to move, until the friction plate 10 abuts against the side wall of the guide rail 4, so as to increase the friction between the friction plate 10 and the guide rail 4, slow down, until the elevator body 1 is stopped by the friction, and the supporting block 11 can better protect the extension end of the hydraulic cylinder 13 when working, prevent the extension end of the hydraulic cylinder 13 from being damaged, the friction plate 10 will also drive the connecting block 15 and the sliding block 14 to move while moving, and the sliding block 14 will also drive the extrusion block 20 to move while moving, the extrusion block 20 extrudes the tooth block 22 to move towards the direction of the gear 18, so that the tooth block 22 clamps the gear 18, further locks the rotating shaft 17 and the roller 19, at this time, the roller 19 does not roll, so as to increase the friction between the roller 19 and the guide rail 4, cooperate with the friction plate 10 to more effectively prevent the elevator body 1 from falling, that is, when the friction plate 10 contacts with the side wall of the guide rail 4, the tooth block 22 clamps the gear 18.

[0038] The above embodiment only expresses one kind of the anti-falling structure for improving the safety of the elevator or several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the appended claims.

Claims

1. An anti-falling structure for improving elevator safety, characterized in that: It comprises an elevator body (1) and a plurality of guide rails (4) arranged in the elevator shaft; An upper support plate (5) is provided on the top of the elevator body (1); A lower support plate (2) is provided at the bottom of the elevator body (1); A plurality of mounting frames (3) are provided on opposite sides of the lower support plate (2) and the upper support plate (5); Symmetrical hydraulic cylinders (13) are provided inside the installation frame (3); The telescopic end of the hydraulic cylinder (13) is provided with a support block (11), and a slide groove for the support block (11) to slide is provided inside the mounting frame (3); The side wall of the support block (11) is provided with a push rod (12); One end of the push rod (12) is provided with a friction plate (10) that contacts the side wall of the guide rail (4).

2. The anti-falling structure for improving elevator safety according to claim 1, characterized in that: The outer walls of both sides of the installation frame (3) are provided with connecting plates (9); The side walls of the connecting plate (9) are provided with symmetrical fixing blocks (16); A rotating shaft (17) is rotatably arranged between the two fixed blocks (16); A roller (19) is provided on the outside of the rotating shaft (17) and cooperates with the guide rail (4).

3. The anti-falling structure for improving elevator safety according to claim 2, characterized in that: A symmetrical gear (18) is provided on the outside of the rotating shaft (17); The side wall of the connecting plate (9) is provided with two groups of symmetrical spring telescopic rods (21); The telescopic end of the spring telescopic rod (21) is provided with a tooth block (22) that cooperates with the gear (18).

4. The anti-falling structure for improving elevator safety according to claim 1, characterized in that: The side wall of the friction plate (10) is provided with a connecting block (15); Slide blocks (14) are provided on both sides of the connecting block (15); The outer wall of the slider (14) is provided with an extrusion block (20) for extruding a tooth block (22).

5. The anti-falling structure for improving elevator safety according to claim 1, characterized in that: A controller (7) and a speed sensor (8) are provided on the top of the upper support plate (5); The controller (7) and the speed sensor (8) are electrically connected via a wire.

6. The anti-falling structure for improving elevator safety according to claim 1, characterized in that: A steel wire rope (6) for driving the elevator body (1) to move is provided on the top of the upper support plate (5); One end of the steel wire rope (6) is connected to a driving device.

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