Emergency device for an elevator

Abstract

The application discloses an elevator emergency device and relates to the field of elevator emergencies, which comprises a car sliding support for installing an elevator car, limit mechanisms are arranged on the two sides of the bottom end of the car sliding support; each limit mechanism comprises a limit block and a movable plate, the limit block is fixedly arranged at the lower end of one side of the car sliding support, the limit block is provided with a limit slot for allowing the elevator guide rail to movably pass through, one end surface of the movable plate is movably arranged with the limit block, a limit roller is arranged at one end of the limit slot close to the movable plate, and the limit roller is movably arranged at one end of the movable plate close to the limit slot through a pin shaft; a driving mechanism for driving the movable plate to move along the side wall of the limit block is arranged at the end of the movable plate away from the limit block. The device can protect and stop the car of the elevator in an emergency, thereby reducing the possibility of elevator safety accidents.

Description

Technical Field

[0001] This invention relates to the field of elevator emergency response, specifically to an elevator emergency device. Background Technology

[0002] Elevators are specialized equipment that require qualified companies to manufacture and install. During operation, unexpected power outages or prolonged use can cause the elevator car to suddenly drop or become unstable, posing safety risks. To reduce the risk of accidents caused by these issues, a device is urgently needed to stop the elevator in such emergencies. Summary of the Invention

[0003] The purpose of this invention is to provide an elevator emergency device that can "protect and stop" the elevator car in the event of an emergency, thereby reducing the possibility of elevator safety accidents.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An elevator emergency device includes a car sliding bracket for installing an elevator car, and limit mechanisms are respectively installed on both sides of the bottom end of the car sliding bracket;

[0006] Each limiting mechanism includes a limiting block and a movable plate. The limiting block is installed and fixed on the lower end of one side of the car sliding frame. The limiting block has a limiting groove for the elevator guide rail to move through. One end face of the movable plate is movably disposed with the limiting block. A limiting roller is installed in the limiting groove near the end of the movable plate. The limiting roller is movably disposed with the end of the movable plate near the limiting groove via a pin.

[0007] The movable plate is equipped with a drive mechanism at the end away from the limiting block, which allows the movable plate to move along the side wall of the limiting block.

[0008] Preferably, the movable plate has a movable guide groove at one end near the limiting roller, and the pin is movably inserted into the movable guide groove at the other end away from the limiting roller;

[0009] The end of the pin away from the limiting groove is movably inserted into the limiting push plate used to drive the limiting roller through the pin.

[0010] Preferably, the end of the limiting push plate near the pin is provided with a movable positioning groove for the pin to move and drive the limiting roller to move along the movable guide groove to limit the elevator guide rail passing through the limiting groove. The end of the pin away from the limiting roller is connected to a limiting cap, and the limiting cap movably abuts against one end face of the limiting push plate.

[0011] The side of the limiting push plate away from the movable positioning groove is movably connected to the drive mechanism through a movable connection structure.

[0012] Preferably, the movable connection structure includes a movable connection shaft, one end of which rotatably passes through the movable plate and the other end is connected to the limiting push plate. An elastic protective structure is installed between the limiting push plate and the movable plate via the movable connection shaft.

[0013] A movable connector is provided at one end of the movable connecting shaft away from the limiting push plate. One end of the movable connector is connected to the movable connecting shaft. A hydraulic cylinder for driving the movable connector is installed on the movable connector.

[0014] The limiting push plate and the movable plate are also reinforcedly connected to the side wall of the car sliding bracket through a reinforced connection structure.

[0015] Preferably, the elastic protection structure includes a first connecting piece and a second connecting piece that can be rotatably disposed relative to each other. The first connecting piece and the second connecting piece are rotatably disposed relative to each other between the limiting push plate and the movable plate via a movable connecting shaft. The ends of the first connecting piece and the second connecting piece away from the movable positioning groove are connected by a return spring. The ends of the first connecting piece and the second connecting piece away from the return spring are rotatably connected relative to the movable plate via a connecting limiting shaft.

[0016] Preferably, the reinforcing connection structure includes a reinforcing connection shaft, one end of which passes through the movable plate and is fixedly connected to the side wall of the car sliding bracket, and the reinforcing connection shaft is fixedly disposed with the movable plate. The other end of the reinforcing connection shaft rotatably passes through the limiting push plate, and the end is connected to a limiting baffle.

[0017] Preferably, the output shaft of the hydraulic cylinder is connected to a movable roller via a rotating shaft at one end near the movable connector. The side wall of the movable connector has a movable groove that is adapted to the movable roller. When the hydraulic cylinder is activated, it drives the output shaft to extend. The movable roller connected to the output shaft extends in the movable groove, causing the movable connector to rotate along the side wall of the movable plate. This causes the limiting push plate connected to the other end of the movable connector via the movable connecting shaft to rotate along the movable plate, driving the limiting roller to move and achieving emergency limiting of the elevator guide rail passing through the limiting groove of the limiting block.

[0018] Preferably, a limiting guide groove is installed and connected below the limiting block, and one end of the limiting guide groove is fixed to the side wall of the car sliding bracket. The limiting guide groove is used to guide and limit the movement of the elevator guide rail.

[0019] The beneficial effects of this invention are: This device can achieve "emergency braking" of the elevator car during operation in case of an emergency (such as a power outage or elevator descent), ensuring the safety of people inside the elevator car and reducing the possibility of elevator accidents. The device's structural design includes a sliding bracket for mounting the elevator car. Limiting mechanisms are installed on both sides of the bottom of the sliding bracket. In case of an emergency, the two symmetrically arranged limiting mechanisms are activated to achieve "emergency braking" of the elevator car, thereby ensuring the safety of people inside the elevator car. Each limiting mechanism includes a limiting block and a movable plate. The limiting block is fixed to the lower end of one side of the sliding bracket and has a limiting groove for the elevator guide rail to move through. One end face of the movable plate is flush with the limiting block. The limit plate is movable, and a limit roller is installed at one end of the limit groove near the movable plate. The limit roller is movably connected to the end of the movable plate near the limit groove via a pin. Furthermore, a drive mechanism is installed at the end of the movable plate away from the limit plate to drive the movable plate to move along the side wall of the limit plate. The drive mechanism drives the movable plate to move, thereby causing the movable plate to move and abut against the limit roller, which abuts against the elevator guide rail passing through the limit groove of the limit plate, thereby achieving "emergency stop" of the elevator car and ensuring the safety of the people in the elevator car. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an elevator emergency device according to the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of part A in the diagram;

[0022] Figure 3 This is a schematic diagram of the front elevation structure of an elevator emergency device according to the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of section B in the diagram;

[0024] Figure 5 This is an axonometric schematic diagram of an elevator emergency device according to the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified view of part C in the diagram;

[0026] In the figure, 1-car sliding support, 2-limiting block, 3-movable plate, 4-limiting push plate, 5-movable connector, 6-hydraulic cylinder, 7-limiting guide rail groove, 21-limiting roller, 41-first connecting piece, 42-second connecting piece, 43-reset spring, 44-limiting baffle, 61-movable roller. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0029] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] like Figures 1 to 6As shown, an elevator emergency device is used to "stop the elevator car in an emergency" during elevator operation (such as a power outage or elevator descent), ensuring the safety of people inside the elevator car and reducing the possibility of elevator accidents. The device's structural design includes a sliding support 1 for mounting the elevator car. Limiting mechanisms are installed on both sides of the bottom of the sliding support 1. In an emergency, these two symmetrically arranged limiting mechanisms activate to "brake" the elevator car, ensuring the safety of passengers inside. Each limiting mechanism includes a limiting block 2 and a movable plate 3. The limiting block 2 is fixed to the lower side of one side of the sliding support 1 and has a limiting groove for the elevator guide rail to pass through. One end of the movable plate 3 is movably connected to the limiting block 2. A limiting roller 21 is installed in the limiting groove near the movable plate 3, and the limiting roller 21 is movably connected to the end of the movable plate 3 near the limiting groove via a pin. A drive mechanism is installed at the end of the movable plate 3 away from the limiting block 2 to allow the movable plate 3 to move along the side wall of the limiting block 2. The movable plate 3 is driven by the set drive mechanism, which in turn drives the limit roller 21 to abut against the elevator guide rail through the limit groove opened in the limit block 2, thereby achieving "emergency stop" of the elevator car and ensuring the safety of the people in the elevator car.

[0031] Furthermore, in the specific implementation process, when an emergency occurs in the elevator (such as a power outage or the elevator descending), it is necessary to "emergency stop" of the elevator car to ensure the safety of the people inside the elevator car. In order to achieve "emergency stop" of the elevator car, limit mechanisms are installed on both sides of the bottom end of the existing car sliding support 1 during the design. The limit mechanisms symmetrically arranged on both sides of the lower part of the car sliding support 1 include a limit block 2 and a movable plate 3. The limit block 2 is installed and fixed on one side of the lower end of the car sliding support 1. The limit block 2 has a limit groove for the elevator guide rail to move through. One end face of the movable plate 3 is movably set with the limit block 2. A limit roller 21 is installed in the limit groove near the end of the movable plate 3. The limit roller 21 is movably set with the end of the movable plate 3 near the limit groove through a pin. A drive mechanism is installed on the end of the movable plate 3 away from the limit block 2 to drive the movable plate 3 to move along the side wall of the limit block 2. During implementation, the elevator car is fixedly installed on the car sliding support 1. By controlling the car sliding support 1 to move up and down along the elevator shaft, the elevator car can reach the desired floor. The car sliding support 1, which is used for lifting and guiding and controlling the elevator car's movement, is installed on the elevator guide rail on the side wall of the elevator shaft and can be raised and lowered. The elevator guide rail is controlled by existing electrical technology to make the elevator car sliding support 1 move up and down along the elevator shaft to reach the desired floor.

[0032] Furthermore, to ensure the elevator car smoothly reaches the desired floor during lifting and lowering, a movable guide groove is provided at the end of the movable plate 3 near the limit roller 21. The end of the pin away from the limit roller 21 is movably inserted into the movable guide groove. At the same time, a limit guide rail groove 7 is installed and connected below the limit block 2. One end of the limit guide rail groove 7 is fixed to the side wall of the car sliding bracket 1. The limit guide rail groove 7 is used to guide and limit the movement of the elevator guide rail. With this design, the elevator guide rails on the same side pass sequentially through the limit guide rail groove 7 and the movable guide groove at the end of the movable plate 3 near the limit roller 21. By controlling the limit roller 21 in the movable guide groove to move against the side wall of the elevator guide rail, the elevator car is "emerged into emergency braking," thereby ensuring the safety of the people inside the elevator car. In practice, when an emergency occurs in the elevator car (power outage or downward movement), and the elevator car is sliding down the elevator shaft, the control mechanism will drive the limit roller 21 to limit and stop the elevator guide rail, thereby achieving the design purpose. In specific implementation, the end of the pin furthest from the limiting groove is movably inserted into the limiting push plate 4, which is used to drive the limiting roller 21 to move via the pin. The end of the limiting push plate 4 near the pin has a movable positioning groove for the pin to move and drive the limiting roller 21 along the movable guide groove to limit the elevator guide rail passing through the limiting groove. The end of the pin furthest from the limiting roller 21 is connected to a limiting cap, which movably abuts against one end face of the limiting push plate 4. The end of the limiting push plate 4 furthest from the movable positioning groove is movably connected to the drive mechanism via a movable connection structure. The movable connection structure includes a movable connecting shaft, one end of which rotatably passes through the movable plate 3 and is connected to the limiting push plate 4. An elastic protective structure is installed between the limiting push plate 4 and the movable plate 3 via the movable connecting shaft. A movable connector 5 is provided at the end of the movable connecting shaft away from the limit push plate 4. One end of the movable connector 5 is connected to the movable connecting shaft. A hydraulic cylinder 6 for driving the movable connector 5 is installed on the movable connector 5. The output shaft of the hydraulic cylinder 6 is connected to a movable roller 61 via a rotating shaft at the end near the movable connector 5. A movable groove adapted to the movable roller 61 is opened on the side wall of the movable connector 5. When the hydraulic cylinder 6 is started, it drives the output shaft to extend and move. The movable roller 61 connected to the end of the output shaft extends and moves in the movable groove, driving the movable connector 5 to rotate along the side wall of the movable plate 3. This drives the limit push plate 4 connected to the other end of the movable connector 5 via the movable connecting shaft to rotate along the movable plate 3, driving the limit roller 21 to move, thereby achieving emergency limit on the elevator guide rail passing through the limit groove of the limit block 2.In this design, during control and adjustment, the hydraulic cylinder 6 drives the movable connector 5 to rotate along the movable plate 3. Simultaneously, to enable the first connecting piece 4 or the second connecting piece 42 to "reset," an elastic protection structure includes a first connecting piece 41 and a second connecting piece 42 that are rotatably mounted. The first connecting piece 41 and the second connecting piece 42 are rotatably mounted between the limiting push plate 4 and the movable plate 3 via a movable connecting shaft. The ends of the first connecting piece 41 and the second connecting piece 42 furthest from the movable positioning groove are connected by a return spring 43, and the ends of the first connecting piece 41 and the second connecting piece 42 furthest from the return spring 43 are rotatably connected to the movable plate 3 via a connecting limiting shaft. When the movable plate 3 rotates, it will cause one of the first connecting pieces 41 or the second connecting piece 42 to rotate, while the other piece remains stationary due to the "friction" of the movable connecting shaft between the limiting push plate 4 and the movable plate 3. Similarly, the return spring 43 connected to the ends of the first connecting piece 4 and the second connecting piece 42 is stretched to achieve "reset of the first connecting piece 4 and the second connecting piece 42"; the limit push plate 4 moves (rotates) under the drive of the hydraulic cylinder 6, thereby driving the other end of the limit push plate 4 connected to the movable connecting head 5 through the movable connecting shaft to move. The limit push plate 4 can move along one end face of the movable plate 3. Thus, when the limit push plate 4 moves (rotates) on one end face of the movable plate 3, the other end of the limit push plate 4 moves (rotates), thereby driving the pin shaft set in the movable positioning groove opened in the limit push plate 4 to move. Then, the pin shaft drives the limit roller 21 to move along the limit groove opened in the limit block 2, thereby pushing the limit roller 21 to abut against the elevator guide rail passing through the limit groove to make contact and abut against it for "emergency stop", limiting and braking the elevator car to prevent the elevator car from sliding uncontrollably and ensuring the safety of the people in the elevator car.

[0033] Furthermore, in order to achieve enhanced stability of the limiting push plate 4, the limiting push plate 4 and the movable plate 3 are also reinforcedly connected to the side wall of the car sliding bracket through a reinforced connection structure; the reinforced connection structure for strengthening and stabilizing the connection of the limiting push plate 4 includes a reinforced connection shaft, one end of which passes through the movable plate 3 and is fixedly connected to the side wall of the car sliding bracket 1, and the reinforced connection shaft is fixedly set with the movable plate 3, and the other end of the reinforced connection shaft rotatably passes through the limiting push plate 4, and the end is connected to a limiting baffle 44. In implementation, when the hydraulic cylinder 6 is activated, its output shaft extends, and the movable roller 61 connected to the end of the output shaft extends in the movable groove, causing the movable connector 5 to rotate along the side wall of the movable plate 3. This causes the limit push plate 4, connected to the other end of the movable connector 5 via the movable connecting shaft, to rotate along the movable plate 3. The limit push plate 4 is rotatably set with the movable plate 3 via the reinforcing connecting shaft, achieving the effect of "rotation reinforcement protection". One end of the limit push plate 4 moves (rotates), thereby causing the other end of the limit push plate 4 to move the limit roller 21. Under the movement of the limit push plate 4, the limit roller 21 abuts against the elevator guide rail passing through the limit groove opened in the limit block 2, achieving emergency limit on the elevator guide rail. This allows the elevator car to stop smoothly in an emergency, ensuring the safety of the people inside the elevator car. The drive mechanism moves the movable plate, which in turn moves the limit roller to abut against the elevator guide rail through the limit groove in the limit block, thus achieving an "emergency stop" of the elevator car and ensuring the safety of the people inside. From the overall design perspective, this device can "protectively stop" the elevator car in emergency situations, reducing the possibility of elevator accidents.

[0034] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the embodiments described above. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. Furthermore, the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. At the same time, various different embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the spirit of the present invention, they should also be considered as the content disclosed by the present invention.

Claims

1. An elevator emergency device, characterized in that, It includes a car sliding bracket (1) for installing an elevator car, and limit mechanisms are respectively installed on both sides of the bottom end of the car sliding bracket (1); Each limiting mechanism includes a limiting block (2) and a movable plate (3). The limiting block (2) is installed and fixed on the lower side of the car sliding bracket (1). The limiting block (2) has a limiting groove for the elevator guide rail to move through. One end face of the movable plate (3) is movably connected to the limiting block (2). A limiting roller (21) is installed in the limiting groove near the end of the movable plate (3). The limiting roller (21) is movably connected to the end of the movable plate (3) near the limiting groove via a pin. The movable plate (3) is equipped with a drive mechanism at the end away from the limiting block (2) for driving the movable plate (3) to move along the side wall of the limiting block (2); The movable plate (3) has a movable guide groove at one end near the limiting roller (21), and the pin shaft is movably inserted into the movable guide groove at the other end away from the limiting roller (21). The end of the pin away from the limiting groove is movably inserted into the limiting push plate (4) for driving the limiting roller (21) to move through the pin. The limiting push plate (4) has an active positioning groove at one end near the pin shaft for the pin shaft to move and drive the limiting roller (21) to move along the active guide groove to limit the elevator guide rail passing through the limiting groove. The end of the pin shaft away from the limiting roller (21) is connected to a limiting cap, and the limiting cap is in active contact with one end face of the limiting push plate (4). The side of the limiting push plate (4) away from the movable positioning groove is movably connected to the drive mechanism through a movable connection structure; The movable connection structure includes a movable connection shaft, one end of which rotatably passes through the movable plate (3) and the end is connected to the limiting push plate (4). An elastic protective structure is installed between the limiting push plate (4) and the movable plate (3) through the movable connection shaft. A movable connector (5) is provided at one end of the movable connecting shaft away from the limiting push plate (4). One end of the movable connector (5) is connected to the movable connecting shaft. A hydraulic cylinder (6) for driving the movable connector (5) to move is installed on the movable connector (5). The limiting push plate (4) and the movable plate (3) are also reinforcedly connected to the side wall of the car sliding bracket through a reinforced connection structure.

2. The elevator emergency device according to claim 1, characterized in that, The elastic protection structure includes a first connecting piece (41) and a second connecting piece (42) that can be rotatably arranged relative to each other. The first connecting piece (41) and the second connecting piece (42) are rotatably arranged relative to each other between the limiting push plate (4) and the movable plate (3) through a movable connecting shaft. The ends of the first connecting piece (41) and the second connecting piece (42) away from the movable positioning groove are connected by a return spring (43). The ends of the first connecting piece (41) and the second connecting piece (42) away from the return spring (43) are rotatably connected relative to the movable plate (3) through a connecting limiting shaft.

3. An elevator emergency device according to claim 2, characterized in that, The reinforced connection structure includes a reinforced connection shaft. One end of the reinforced connection shaft passes through the movable plate (3) and is fixedly connected to the side wall of the car sliding bracket (1). The reinforced connection shaft is fixedly set with the movable plate (3). The other end of the reinforced connection shaft rotatably passes through the limiting push plate (4) and is connected to a limiting baffle (44).

4. An elevator emergency device according to claim 1, characterized in that, The output shaft of the hydraulic cylinder (6) is connected to a movable roller (61) via a rotating shaft at one end near the movable connector (5). The movable connector (5) has a movable groove on its side wall that is adapted to the movable roller (61). When the hydraulic cylinder (6) is started, it drives the output shaft to extend and move. The movable roller (61) connected to the end of the output shaft extends and moves in the movable groove, driving the movable connector (5) to rotate along the side wall of the movable plate (3). This causes the limit push plate (4) connected to the other end of the movable connector (5) via the movable connecting shaft to rotate along the movable plate (3), driving the limit roller (21) to move, thereby achieving emergency limit on the elevator guide rail passing through the limit groove opened in the limit block (2).

5. An elevator emergency device according to claim 4, characterized in that, The limiting block (2) is connected to a limiting guide groove (7) below it. One end of the limiting guide groove (7) is fixed to the side wall of the car sliding bracket (1). The limiting guide groove (7) is used to guide and limit the movement of the elevator guide rail.

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