An elevator emergency rescue device

Abstract

The present application relates to a kind of elevator rescue device, the purpose is to provide a kind of elevator emergency rescue device, which can be used for emergency rescue, and convenient to use, safe operation.The technical scheme is a kind of elevator emergency rescue device, characterized in that: the device includes at least two gas cylinders vertically fixed outside elevator car installation, the compressed air is filled in the gas cylinder, and the top end of gas cylinder is provided with the gas pipe of axis vertical arrangement and opening upward, the bottom end of gas cylinder is provided with the gas pipe of axis vertical arrangement and opening downward;The gas pipe is equipped with stop valve and pressure reducing valve.

Description

Technical Field

[0001] This invention relates to an elevator rescue device, specifically an elevator emergency rescue device, which is particularly suitable for use when the weight difference between the elevator car and the counterweight is small. Background Technology

[0002] With the widespread use of elevators, incidents of elevators unexpectedly stopping and trapping people are commonplace. According to the technical specification "Elevator Supervision and Periodic Inspection Rules" (TSG7001-2023), "for traction and forced-drive elevators, the drive unit brake should be able to be opened by a continuously manually operated mechanical device or an electrical device powered by an automatically charging emergency power supply." This allows the elevator to move even when there is a gravity difference between the counterweight side and the car side, until the car is leveled, thus rescuing passengers. If the gravity difference between the counterweight side and the car side prevents the elevator from moving, the "Elevator Supervision and Periodic Inspection Rules" (TSG7001-2023) requires that "after manually releasing the brake, if the car (carrying device) cannot move under gravity, it should be able to be moved to a nearby floor by a manual mechanical device, a manually operated electric device independent of the main power supply, or other measures." In practical applications, manual mechanical devices are mostly used in machine-room elevators, allowing emergency rescue personnel to operate them safely and conveniently. In machine-room-less elevators, the drive unit is typically located in the shaft, which is enclosed and difficult to access. Most use rechargeable electric actuators, and repeated charging can damage the batteries, rendering them unusable during emergency rescues. Other measures include adding counterweights to alter the balance or applying external force to the pit or landing doorway. However, these measures carry the risk of lacking necessary equipment on-site (e.g., lost counterweights), and require emergency rescue personnel to enter the shaft, making the operation complex and posing certain personal risks. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide an elevator emergency rescue device that can be used for emergency rescue, and is convenient to use and safe to operate.

[0004] The technical solution provided by this invention is:

[0005] An elevator emergency rescue device is characterized in that: the device includes at least two air storage cylinders vertically fixed outside the elevator car, the air storage cylinders are filled with compressed air, and the top of the air storage cylinders is provided with an air pipe with its axis arranged vertically and its opening facing upward, and the bottom of the air storage cylinders is provided with an air pipe with its axis arranged vertically and its opening facing downward; each air pipe is equipped with a shut-off valve and a pressure reducing valve.

[0006] The shut-off valve is an electrically controlled shut-off valve; the electrically controlled shut-off valve is connected to the operation module and power supply module located in the elevator control cabinet or emergency operation panel via wires.

[0007] The power supply module has a battery compartment for standard batteries, which facilitates the installation and removal of standard batteries.

[0008] The operation module is equipped with four buttons: an emergency stop button, an up button, a common button, and a down button.

[0009] The circuit structure of the operation module and the power supply module is as follows: the up button and the up electronically controlled shut-off valve are connected in series to form one branch, and the down button and the down electronically controlled shut-off valve are connected in series to form another branch. The two branches are connected in parallel and then connected in series to the circuit formed by the common button, the battery and the emergency stop button.

[0010] The beneficial effects of this invention are:

[0011] The elevator emergency rescue device provided by this invention uses a control module to control the release of compressed air from a gas cylinder, which propels the elevator car to a level position, thus achieving the purpose of rescuing passengers in an emergency. This device is safe and simple to operate, uses readily available energy, and has low requirements for on-site equipment; it is particularly suitable for use when the weight difference between the elevator car and the counterweight is small. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the main structure of an embodiment of the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of the compressed gas cylinder in an embodiment of the present invention.

[0015] Figure 4 This is a schematic diagram of the operation module and power supply module in an embodiment of the present invention.

[0016] Figure 5 This is a circuit structure diagram of the operation module and the power supply module in an embodiment of the present invention.

[0017] Attached reference numerals: 1. Gas cylinder; 2.1. Upward electrically controlled shut-off valve; 2.2. Downward electrically controlled shut-off valve; 3. Pressure reducing valve; 4. Operation module; 4.1. Emergency stop button; 4.2. Upward button; 4.3. Common button; 4.4. Downward button; 5. Power supply module; 5.1. Battery. Detailed Implementation

[0018] The invention will be further illustrated below with reference to specific figures.

[0019] Figure 1The elevator emergency rescue device shown consists of at least two air cylinders 1 vertically installed outside the elevator car. The air cylinders are fixedly connected to the elevator car wall and are filled with compressed air.

[0020] like Figure 2 As shown, each gas cylinder has an upward-opening air pipe at the top and a downward-opening air pipe at the bottom. Each air pipe is also equipped with an electrically controlled shut-off valve and a pressure reducing valve 3 (the compressed air in the gas cylinder passes through the shut-off valve and the pressure reducing valve in sequence before being delivered to the outside). The electrically controlled shut-off valve installed on the downward-opening air pipe is called the upward electrically controlled shut-off valve 2.1, and the electrically controlled shut-off valve installed on the upward-opening air pipe is called the downward electrically controlled shut-off valve 2.2.

[0021] The operating module 4 and power supply module 5 of the electrically controlled shut-off valve are located in the elevator control cabinet or emergency control panel. The operating module and power supply module are connected to the electrically controlled shut-off valve via wires. The power supply module has a battery compartment for standard batteries, facilitating their installation and removal. The power required to drive the electrically controlled shut-off valve is relatively small; only low-power batteries are needed to achieve its switching function. Because standard batteries, such as AAA or AA batteries, are used, in case the battery 5.1 is found to be low on power or damaged during emergency rescue, backup batteries can be easily used or purchased nearby, without affecting rescue operations.

[0022] The operation module has at least four buttons: Emergency Stop 4.1, Upward 4.2, Common 4.3, and Downward 4.4, thus providing control functions for opening / closing the upward electrically controlled shut-off valve and opening / closing the downward electrically controlled shut-off valve; the circuit structure is as follows. Figure 5 As shown: the up button 4.2 and the up electrically controlled shut-off valve 2.1 are connected in series to form one branch, and the down button 4.4 and the down electrically controlled shut-off valve 2.2 are connected in series to form another branch. These two branches are connected in parallel and then in series to form a circuit consisting of the common button 4.3, battery 5, and emergency stop button 4.1. In case of emergency, first open the elevator brake. If the car needs to move upwards, continuously press the up button and the common button to open the up electrically controlled shut-off valve, releasing compressed gas from the cylinder downwards to push the car upwards. If the car needs to move downwards, continuously press the down button and the common button to open the down electrically controlled shut-off valve, releasing compressed gas from the cylinder upwards to push the car downwards. The emergency stop button is a bistable switch. In case of an emergency, pressing the emergency stop button will disconnect the power supply and stop all operations.

Claims

1. An elevator emergency rescue device, characterized by: The device comprises at least two gas cylinders (1) vertically fixed outside the elevator car, the gas cylinders are filled with compressed air, and the top end of the gas cylinder is provided with a gas pipe vertically arranged along the axis and opening upward, and the bottom end of the gas cylinder is provided with a gas pipe vertically arranged along the axis and opening downward; the gas pipes are respectively provided with a stop valve and a pressure reducing valve (3); the stop valve is an electric control stop valve; The electric control stop valve installed on the gas pipe opening downward is called an upward electric control stop valve (2.1), and the electric control stop valve installed on the gas pipe opening upward is called a downward electric control stop valve (2.2); The electric control stop valve is connected to an operation module (4) and a power supply module (5) in the elevator control cabinet or emergency operation screen through a wire; The operation module is provided with four buttons, i.e. an emergency stop button (4.1), an upward button (4.2), a common button (4.3), and a downward button (4.4); The circuit structure of the operation module and the power supply module is that the upward button and the upward electric control stop valve (2.1) are connected in series to form a branch, the downward button and the downward electric control stop valve (2.2) are connected in series to form another branch, and the two branches are connected in parallel and then connected in series to the loop formed by the common button, the battery (5.1), and the emergency stop button; When implementing emergency rescue, the elevator brake is first opened; if the car needs to move upward, the upward button and the common button are continuously pressed to control the opening of the upward electric control stop valve, so that the gas cylinder releases compressed gas downward, thereby pushing the car upward; if the car needs to move downward, the downward button and the common button are continuously pressed to control the opening of the downward electric control stop valve, so that the gas cylinder releases compressed gas upward, thereby pushing the car downward; The emergency stop button is a bistable switch, and when an unexpected situation occurs, the emergency stop button can be pressed to disconnect the power supply and stop all operations.

2. Elevator emergency rescue arrangement according to claim 1, characterized in that The power supply module has a battery box of a standard battery, which facilitates the installation and removal of the standard battery.

Images