Anti-falling tool for elevator car

Abstract

The utility model discloses an anti-falling tool for an elevator car, and relates to the technical field of elevator cars. An elevator shaft is arranged in the supporting frame; two groups of sliding rods are fixedly mounted on the two sides in the supporting frame; the sliding rods comprise a first sliding rod and a second sliding rod; an elevator car is installed between the first sliding rods in a matched mode. The top of the elevator car is provided with a winding wheel in a matched mode. Push blocks are arranged at the two ends of the winding wheel; the push block is slidably mounted on the top of the elevator car; the push block is fixedly mounted on a push rod of the electric push cylinder through a connecting block; when the push rod extends forwards, the push rod enables the push block to slide forwards along the bolt of the double-round-head groove through the connecting block, and when the push block moves forwards, the end, provided with the C-shaped groove, of the sliding block moves towards the first sliding rod, so that the friction force between the two sliding blocks and the two first sliding rods is increased till a stop state is achieved. And the elevator car in the falling process is effectively braked in a short time, and the safety of personnel in the elevator car is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator car technical field, concretely is a kind of elevator car anti-falling tool. BACKGROUND

[0002] With the acceleration of urbanization, elevators are widely used in high-rise buildings, and their safe operation is crucial. Once elevator car falling accidents occur, they often cause serious casualties and property losses. Although modern elevators are usually equipped with various safety protection devices, such as speed limiters, safety clamps, etc., in some extreme cases, these devices may fail to function effectively due to malfunction or other reasons, leading to serious consequences.

[0003] Now the traditional elevator car in long time use, possibly due to maintenance not in place, possibly will cause elevator car to appear the condition of failure, in elevator operation, possibly sudden drop situation occurs, so that the personnel in car possibly will be frightened or cause the condition of personnel injury, but now traditional elevator car although installation speed limiter, but in special situation, speed limiter cannot effectively guarantee elevator car to stop falling in short time, so that elevator car will drop to elevator shaft bottom, cause the condition of personnel injury.

[0004] After searching, Chinese patent application No. CN201920605368.9 discloses an elevator car anti-falling device. It includes a steel wire rope for lifting the car, a pull rod, a support rod, and a spring. The support rod is vertically installed on the outer side of the top cover plate of the car. The pull rod includes a first connection point, a second connection point, and a third connection point. The support rod is connected to the first connection point of the pull rod. One end of the spring is connected to the top cover plate, and the other end is connected to the second connection point. The steel wire rope is connected to the third connection point. The end of the pull rod near the elevator guide rail is provided with a damping piece. There is a first gap between the damping piece and the guide rail. The distance between the damping piece and the first connection point is greater than the distance between the guide rail and the first connection point.

[0005] The elevator car in the above-mentioned patent can slow down the falling speed by the damping piece when sudden falling occurs during use. However, it cannot effectively stop the elevator car in a short time. Therefore, when the elevator car reaches the bottom of the elevator shaft, it may still cause harm to the personnel inside the car. Utility model content

[0006] The purpose of this utility model is to provide an elevator car anti-fall device. In this structure, a sensor is installed at the bottom of the elevator car. When the descent speed of the elevator car is greater than the speed set by the sensor, the sensor triggers the controller to drive the electric push cylinders at both ends of the top of the elevator car. The electric push cylinders push the slider with a C-shaped groove to move closer to the first sliding rod. In this way, the elevator car is fixed between the two first sliding rods by the two sliders, which effectively prevents the elevator car from falling again and solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An elevator car anti-fall fixture includes a support frame; the interior of the support frame is an elevator shaft; two sets of sliding rods are fixedly installed on both sides inside the support frame, namely a first sliding rod and a second sliding rod; an elevator car is installed between the two first sliding rods; a winch is installed on the top of the elevator car; push blocks are provided at both ends of the winch; the push blocks are slidably installed with the top of the elevator car; the push blocks are fixedly installed with the push rod of an electric push cylinder through connecting blocks;

[0009] A sensor is installed at the bottom of the elevator car; the sensor is electrically connected to the controller via a transmission line; the controller is connected to the electric push cylinder via a transmission line.

[0010] As a further technical solution of this utility model, it also includes a slider, the end of which away from the push block is C-shaped; the C-shaped groove on the slider is slidably connected to the side wall of the first slide rod.

[0011] As a further technical solution of this utility model, a counterweight frame is slidably installed between the two second sliding rods; the top of the counterweight frame is connected to the wire rope on the winch via a winch wheel; a fixed pulley is provided between the winch wheel at the top of the counterweight frame and the winch.

[0012] As a further technical solution of this utility model, the winch wheel installed on the top of the elevator car is connected to the wire rope on the winch.

[0013] As a further technical solution of this utility model, the push block has symmetrical double round head grooves on both sides, and bolts are provided inside the two double round head grooves. The bolts are fixedly installed with the elevator car.

[0014] As a further technical solution of this utility model, the bottom of the electric push cylinder is fixedly installed to the top of the elevator car by a support block;

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In use, this utility model utilizes a winch at the top of the support frame to cooperate with a winch wheel at the top of the elevator car. The winch also cooperates with a winch wheel at the top of the counterweight frame. As the elevator car moves up and down along the first slide bar, the counterweight frame moves up and down along the second slide bar via rollers. This effectively ensures the stability of the elevator car during movement.

[0017] In this invention, when the elevator car accelerates downward due to the breakage of the connecting rope, the sensor at the bottom of the elevator car detects that the descent speed is greater than the set speed. The sensor enables the controller to work through the transmission line, and the controller enables the extension of the push rods of the two electric push cylinders through two transmission lines respectively.

[0018] In this invention, when the push rod extends forward, the push rod, through the connecting block, enables the push block to slide forward along the bolt of the double round head groove. As the push block moves forward, the end of the slider with the C-shaped groove moves toward the first sliding rod, thereby increasing the friction between the two sliders and the two first sliding rods until the stop state is reached. This effectively stops the elevator car during its descent in a short time, ensuring the safety of the people inside the elevator car. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This utility model Figure 1 A schematic diagram of the rear structure.

[0021] Figure 3 This utility model Figure 1 Another perspective structural diagram.

[0022] Figure 4 This utility model Figure 3 Another perspective structural diagram.

[0023] Figure 5 This utility model Figure 1 A schematic diagram showing the internal structure of the middle section.

[0024] Figure 6 This utility model Figure 5 Bottom view of the structure.

[0025] Figure 7 This utility model Figure 5 Enlarged view of the local structure at point A in the middle.

[0026] In the diagram: 1-Support frame, 2-First slide bar, 3-Second slide bar, 4-Winch, 5-Counterweight frame, 6-Elevator car, 7-Sensor, 8-Transmission line, 9-Controller, 10-Slider, 11-Push block, 12-Electric pusher cylinder, 13-Winch wheel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-7 In this embodiment of the utility model, an elevator car anti-fall fixture includes a support frame 1; the interior of the support frame 1 is an elevator shaft; two sets of sliding rods are fixedly installed on both sides inside the support frame 1; namely, a first sliding rod 2 and a second sliding rod 3; wherein an elevator car 6 is installed between the two first sliding rods 2; a winch wheel 13 is installed on the top of the elevator car 6; push blocks 11 are provided at both ends of the winch wheel 13; the push blocks 11 are slidably installed with the top of the elevator car 6; the push blocks 11 are fixedly installed with the push rod of an electric push cylinder 12 through a connecting block;

[0029] A sensor 7 is installed at the bottom of the elevator car 6; the sensor 7 is electrically connected to the controller 9 via a transmission line 8; the controller 9 is connected to the electric push cylinder 12 via a transmission line 8.

[0030] It also includes a slider 10, the end of which away from the push block 11 is C-shaped; the C-shaped groove on the slider 10 is slidably connected to the side wall of the first slide rod 2.

[0031] By adopting the above technical solution, during use, the winch 4 at the top of the support frame 1 cooperates with the winch wheel 13 at the top of the elevator car 6, and the winch 4 also cooperates with the winch wheel 13 at the top of the counterweight frame 5. When the elevator car 6 moves up and down along the first slide bar 2, the counterweight frame 5 moves up and down along the second slide bar 3 via rollers. This effectively ensures the stability of the elevator car 6 during the movement.

[0032] A counterweight frame 5 is slidably installed between the two second sliding rods 3; the top of the counterweight frame 5 is connected to the wire rope on the winch 4 via a winch wheel 13; a fixed pulley is provided between the winch wheel 13 on the top of the counterweight frame 5 and the winch 4.

[0033] In this embodiment, the winch 13 installed on the top of the elevator car 6 is connected to the wire rope on the winch 4.

[0034] By adopting the above technical solution, when the elevator car 6 accelerates its descent due to the breakage of the connecting rope, the sensor 7 at the bottom of the elevator car 6 detects that the descent speed is greater than the set speed. The sensor 7 enables the controller 9 to work through the transmission line 8. The controller 9 enables the extension of the push rods of the two electric push cylinders 12 through the two transmission lines 8 respectively.

[0035] In this embodiment, the push block 11 has symmetrical double round head grooves on both sides, and bolts are installed inside the two double round head grooves. The bolts are fixedly installed with the elevator car 6.

[0036] The bottom of the electric push cylinder 12 is fixedly installed to the top of the elevator car 6 via a support block;

[0037] By adopting the above technical solution, when the push rod extends forward, the push rod realizes that the push block 11 slides forward along the bolt of the double round head groove through the connecting block. When the push block 11 moves forward, the end of the slider 10 with the C-shaped groove moves towards the first slide rod 2, thereby increasing the friction between the two sliders 10 and the two first slide rods 2 until the stop state, effectively stopping the elevator car 6 in the falling process in a short time and ensuring the safety of the people inside the elevator car 6.

[0038] The working principle of this utility model is as follows: When in use, the winch 4 at the top of the support frame 1 cooperates with the winch wheel 13 at the top of the elevator car 6. The winch 4 also cooperates with the winch wheel 13 at the top of the counterweight frame 5. When the elevator car 6 moves up and down along the first slide bar 2, the counterweight frame 5 moves up and down along the second slide bar 3 through rollers. This effectively ensures the stability of the elevator car 6 during the movement.

[0039] When the elevator car 6 accelerates its descent due to the breakage of the connecting rope, the sensor 7 at the bottom of the elevator car 6 detects that the descent speed is greater than the set speed. The sensor 7 enables the controller 9 to work through the transmission line 8. The controller 9 extends the push rods of the two electric push cylinders 12 through the two transmission lines 8 respectively.

[0040] As the push rod extends forward, the push rod connects to the push block 11, which slides forward along the bolt of the double-round-head groove. As the push block 11 moves forward, the end of the slider 10 with the C-shaped groove moves toward the first slide rod 2, increasing the friction between the two sliders 10 and the two first slide rods 2 until it stops. This effectively stops the elevator car 6 during its descent in a short time, ensuring the safety of the people inside the elevator car 6.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An elevator car arresting tool, characterized by: Including support frame (1), the inside of support frame (1) is elevator shaft, two groups of slide bars are fixedly installed on the inside of support frame (1), are first slide bar (2) and second slide bar (3), wherein, elevator car (6) is installed between two first slide bars (2), the top of elevator car (6) is installed with winch (13), the both ends of winch (13) are provided with push block (11), the top of elevator car (6) is slidably installed with push block (11), push block (11) is fixedly installed with the push rod of electric push cylinder (12) through connecting block. The bottom of elevator car (6) is provided with sensor (7), sensor (7) is electrically connected with controller (9) through transmission line (8), controller (9) is connected with electric push cylinder (12) through transmission line (8).

2. An elevator car arresting tool according to claim 1, characterized in that: It further includes a sliding block (10), the end of the sliding block (10) away from the push block (11) is provided with a C-shaped slot, and the C-shaped slot is slidably connected with the sidewall of the first slide bar (2).

3. An elevator car arresting tool according to claim 1, characterized in that: The counterweight frame (5) is slidably installed between the two second slide bars (3), the top of the counterweight frame (5) is connected with the steel wire rope of the winch (4) through the winch (13), and a fixed pulley is arranged between the winch (13) on the top of the counterweight frame (5) and the winch (4).

4. An elevator car arresting tool according to claim 3, characterized in that: The winch (13) installed on the top of the elevator car (6) is connected with the steel wire rope of the winch (4).

5. An elevator car arresting tool according to claim 4, characterized in that: The both sides of the push block (11) are provided with symmetric double-round-head grooves, and bolts are arranged in the double-round-head grooves, the bolts are fixedly installed with the elevator car (6).

6. An elevator car arresting tool according to claim 4, characterized in that: The bottom of the electric push cylinder (12) is fixedly installed with the top of the elevator car (6) through a supporting block.

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