A car escape system

Abstract

This utility model discloses a car escape system, including a tray mounted on the bottom of the car, with a throwable counterweight placed on top of the tray; one side of the tray is rotatably connected to the car, and the other side is locked by a locking tongue; a control component is used to control the locking tongue to unlock the tray according to the car's operating conditions. Thus, when the elevator car is trapped and in equilibrium with the counterweight, the throwable counterweight at the bottom of the car is released to break the balance, allowing the car to slide to a landing or other suitable area, facilitating rescue, significantly improving rescue efficiency, and simplifying subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of car structure technology, and in particular to a car escape system. Background Technology

[0002] Most elevator traction systems currently employ a counterweight balancing scheme, with the counterweight weight precisely configured based on the car's net weight and rated load capacity to ensure stable car operation and reduce the load on the traction motor. However, in the event of an elevator malfunction, the traction motor will engage the brake, stopping the car to prevent it from rapidly ascending or descending. If the car is heavily loaded, it may be in a state of equilibrium with the counterweight. Even if the brake is released, the car may remain stationary, requiring more complex operations deep into the elevator shaft to free it, thus hindering rescue and maintenance efficiency. Utility Model Content

[0003] This embodiment discloses a car escape system, specifically including: A tray 2 is fitted to the bottom of the car 1, and a throwable counterweight 3 is placed on top of the tray 2; One side of the tray 2 is rotatably connected to the car 1, and the other side is locked by the locking tongue 4; The control component is used to control the locking tongue 4 to unlock the tray 2 according to the car's operating conditions.

[0004] As an optional implementation, the control components include a balance detection unit for determining the car's balance status, an electromagnetic switch unit for controlling the retraction of the locking tongue 4, and a brake opening and closing unit for controlling the traction machine to release or close the brake.

[0005] As an optional implementation, one side of the tray 2 is rotatably connected to the car 1 via a hinge structure; When the tray 2 is locked by the latch 4, it is parallel to the bottom surface of the car 1.

[0006] As an optional implementation, two sets of trays 2 are symmetrically arranged at the bottom of the car 1, and each tray 2 is equipped with a locking tongue 4 for locking.

[0007] As an optional implementation, the electromagnetic switch unit of the control component independently controls the locking tongue 4 of each tray 2.

[0008] As an optional implementation, the electromagnetic switch unit is driven by 24V DC power to keep the locking tongue 4 in the extended state to lock the tray 2.

[0009] As an optional implementation, when the electromagnetic switch unit is de-energized, the locking tongue 4 is de-energized and retracted, then the tray 2 is unlocked, and the throwable counterweight 3 on the top of the tray 2 is detached from the car 1.

[0010] As an optional implementation, the brake opening and closing unit is used to control the brake to close and lock the car 1 when the car 1 slides to the nearest level.

[0011] As an optional implementation, the brake opening and closing unit is also used to send an opening command to the gantry crane.

[0012] Compared with the prior art, this embodiment has the following beneficial effects: In this embodiment, when the elevator car is trapped and in balance with the counterweight, the throwable counterweight at the bottom of the car is released to break the balance, so that the car can slide to the floor level or other areas, which facilitates rescue, significantly improves rescue efficiency, and facilitates subsequent maintenance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of a car escaping system disclosed in this embodiment; Figure 2 This is a schematic diagram of the planar structure of a car escaping system disclosed in this embodiment; Figure 3 This is a schematic diagram of the system structure of a car escaping system disclosed in this embodiment; Figure 4 This is a schematic diagram of the structure of an electromagnetic switch unit in a car escaping system disclosed in this embodiment.

[0015] The specific structural component comparison table is as follows: Detailed Implementation

[0016] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see Figures 1-4 This embodiment discloses a car escaping system, comprising: A tray 2 is fitted at the bottom of the car 1, and a throwable counterweight 3 is placed on top of the tray 2; One side of the tray 2 is rotatably connected to the car 1, and the other side is locked by the locking tongue 4; The control component is used to control the locking tongue 4 to unlock the tray 2 according to the car's operating conditions.

[0018] In this embodiment, when the car 1 is trapped and in a balanced state with the counterweight, the control component can control the locking tongue 4 to unlock the tray 2 to release the throwable counterweight 3, thereby balancing the weight of the car 1 with the weight of the counterweight, allowing the car to escape and slide away, so as to facilitate rescue.

[0019] In this embodiment, the control components include a balance detection unit for measuring the balance state of the car, an electromagnetic switch unit for controlling the retraction of the locking tongue 4, and a brake opening and closing unit for controlling the traction machine to release or close the brake.

[0020] Here, the power supply of actuators such as the balance detection unit, electromagnetic switch unit, and brake opening and closing unit is independent of the car, so as to ensure that safety control and escape actions can still be performed normally during elevator car malfunctions.

[0021] The control components are physically assembled in the elevator control cabinet and communicate with actuators such as the balance detection unit, electromagnetic switch unit, and brake opening and closing unit.

[0022] Since the counterweight is fixed and known, the balance detection unit can determine whether the car and counterweight are in a balanced state by measuring the weight of the passengers and goods carried in the car, or by releasing the brake and detecting whether the car position changes.

[0023] The brake opening and closing unit is used to close the brake in case of abnormal conditions in the car, such as outputting a running fault code, so as to stop the car from running and ensure that the car does not plummet or rise suddenly, thus protecting the safety of the passengers.

[0024] In this embodiment, the throwable counterweight 3 can be made of high-density metal blocks or bricks, or granular materials such as sand and gravel, to avoid damage to the elevator shaft or associated facilities after the metal block is thrown away as a whole. Alternatively, liquid loaded in a flexible container can be used to further reduce material costs and the risk of throwing away.

[0025] As an optional implementation, one side of the tray 2 is rotatably connected to the car 1 via a hinge structure; When the tray 2 is locked by the locking tongue 4, it is parallel to the bottom surface of the car 1.

[0026] As an optional implementation, two sets of trays 2 are symmetrically arranged at the bottom of the car 1, and each tray 2 is equipped with a locking tongue 4 for locking.

[0027] As an optional implementation, the electromagnetic switch unit of the control component independently controls the locking tongue 4 of each tray 2.

[0028] Here, several trays 2 and corresponding locking tongues 4 can be set at the bottom of the car 1 to arrange the throwable counterweights 3 in batches. By releasing the throwable counterweights 3 one by one, fine control can be achieved, avoiding the release of too many throwable counterweights 3 at one time, which would cause the car 1 to become unbalanced and rise and fall rapidly, thus ensuring the safety of trapped personnel.

[0029] Furthermore, different weights of throwable counterweights 3 can be installed on different pallets 2, so that when the car 1 carries passengers or goods of different weights, a specific throwable configuration 3 can be selectively discarded, so that the car 1 can slide more smoothly after escaping the trapped state, further improving the safety of passengers in the event of a malfunction.

[0030] As an alternative implementation, the electromagnetic switch unit is driven by 24V DC power to keep the locking tongue 4 in the extended state to lock the tray 2.

[0031] As an optional implementation, when the electromagnetic switch unit is de-energized, the locking tongue 4 is de-energized and retracted, then the tray 2 is unlocked, and the throwable counterweight 3 on top of the tray 2 is disengaged from the car 1.

[0032] Here, the electromagnetic switch unit is normally activated, so that the locking tongue 4 locks the tray 2 at all times. Only when it is determined that the car 1 is trapped will the power be cut off in a controlled manner. As a result, under the action of gravity, one side of the tray 2 flips downward, and the counterweight 3 can be thrown away from the car 1, which breaks the balance between the car 1 and the counterweight. Under the action of the counterweight, the car 1 slides.

[0033] As an optional implementation, the brake opening and closing unit is used to control the brake to close and lock the car 1 when the car 1 slides to the nearest level.

[0034] As an optional implementation, the brake opening and closing unit is also used to send an opening command to the gantry crane.

[0035] Here, the brake opening and closing unit is used to immediately lock the movement of the car 1 when an elevator malfunction occurs, so as to wait for rescue and maintenance, and to release the car 1 when it needs to be evacuated, and to close the car 1 when it slides to the level floor, so that the trapped person can leave the car 1 from the elevator door at the level floor.

[0036] It is evident that when an elevator car is trapped and in equilibrium with the counterweight, releasing the throwable counterweight at the bottom of the car breaks the equilibrium, allowing the car to slide to the floor level or other areas, facilitating rescue, significantly improving rescue efficiency, and making subsequent maintenance easier.

Claims

1. A car escape system, characterized in that, include: A tray (2) is fitted to the bottom of the car (1), and a throwable counterweight (3) is placed on top of the tray (2). The tray (2) is rotatably connected to the car (1) on one side and locked by the latch (4) on the other side; The control component is used to control the locking tongue (4) to unlock the tray (2) according to the working conditions of the car (1).

2. The car escape system according to claim 1, characterized in that, include: The control components include a balance detection unit for measuring the balance state of the car (1), an electromagnetic switch unit for controlling the retraction of the locking tongue (4), and a brake opening and closing unit for controlling the traction machine to release or close the brake.

3. The car escape system according to claim 2, characterized in that, include: One side of the tray (2) is rotatably connected to the car (1) via a hinge structure; When the tray (2) is locked by the latch (4), it is parallel to the bottom surface of the car (1).

4. The car escape system according to claim 3, characterized in that, include: Two sets of trays (2) are symmetrically arranged at the bottom of the car (1), and each tray (2) is equipped with a locking tongue (4) for locking.

5. The car escape system according to claim 4, characterized in that, include: The electromagnetic switch unit of the control component independently controls the latch (4) of each tray (2).

6. A car escape system according to claim 5, characterized in that, include: The electromagnetic switch unit is driven by 24V DC power to keep the locking tongue (4) in the extended state to lock the tray (2).

7. The car escape system according to claim 6, characterized in that, include: When the electromagnetic switch unit is de-energized, the locking tongue (4) is de-energized and retracted, then the tray (2) is unlocked, and the throwable counterweight (3) on the top of the tray (2) is disengaged from the car (1).

8. A car escape system according to claim 2, characterized in that, include: The brake opening and closing unit is used to control the brake to close and lock the car (1) when the car (1) slides to the nearest level.

9. A car escape system according to claim 8, characterized in that, include: The brake opening and closing unit is also used to send an opening command to the gantry crane corresponding to the current leveling floor.

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