Buffer brake device for preventing falling and top collision of elevator car

Abstract

The application discloses a buffer brake device for preventing elevator car from falling and colliding with the top, which comprises a guide rail, one side of which is provided with a car; one side of the car is provided with a side plate, and one limiting plate is installed on the upper and lower sides of the side plate respectively; a buffer mechanism is installed on the other side of the limiting plate; and an installation rod is installed on the lateral side of the side plate. When the car falls out of control, the car drives the buffer mechanism at the bottom to approach the ground, and when the buffer mechanism contacts the ground, the movable column will shrink into the inside of the side plate under the impact of the ground, so that the extrusion rod drives the friction plate and the convex point to extrude and rub with the friction groove, so that the structure can slow down the falling speed of the car. Finally, when the friction between the friction plate and the friction groove is greater than or equal to the weight of the car, the car can stop falling, so that the device can prevent the car from falling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator car, in particular to a buffer brake device for preventing elevator car from falling and colliding with the top. BACKGROUND

[0002] With the rapid development of China's social economy, the scale of cities continues to expand, and the population density is increasingly concentrated. High-rise buildings are springing up like mushrooms across the country. As an important equipment for vertical transportation of high-rise buildings, the application range of elevators is becoming wider and wider. According to statistics, more than two-thirds of the population in some modern cities basically live in the air, and they rely on various elevators to work, live and entertain in the space 10m above the ground every day.

[0003] With the rapid growth of the use of elevators, the number of elevator accidents is also increasing. In the past elevator accidents, the collision and squatting caused serious personal and property damage, and the social attention was high. The impact is also larger. However, in the process of continuous improvement and perfection of the current elevator safety protection device and system, it mainly focuses on the control and monitoring link, and pays attention to the prevention in advance. There is little progress in the safety protection measures that can be taken after the accident. Especially when the car collides with the top and squats at the bottom, the current protection mainly uses the traditional buffer type and the uplink overspeed protection device. However, the traditional buffer type has limited protection effect when the car is in a high speed state and the structure often causes secondary damage to the car. The uplink overspeed protection device also fails to protect when it is close to the top position, and cannot prevent the collision. Therefore, it is necessary to improve it according to the above defects. SUMMARY

[0004] The present invention aims to provide a buffer brake device for preventing elevator cars from falling and hitting the top, so as to solve the problem raised in the above-mentioned background art that with the rapid growth of elevator usage, the number of elevator accidents has also shown a growing trend. In the past, elevator accidents caused by hitting the top and hitting the bottom have caused serious personal and property damage, faced high social attention, and caused a large level of impact. However, in the process of continuous improvement and perfection of current elevator safety protection devices and systems, the focus has mainly been on control and monitoring links, emphasizing pre-emptive prevention, while there has been little progress in safety protection measures that can be taken after the accident occurs. In particular, when accidents of hitting the top and hitting the bottom occur, traditional buffer types and upward overspeed protection devices are currently mainly used for protection. However, it has been proven that traditional buffer types have limited protective effects when the car is at a high speed and a top and bottom accident occurs. Moreover, due to their structural characteristics, they often cause secondary damage to the car. Similarly, the upward overspeed protection often fails to protect the car when it is close to the top floor and cannot play a role in preventing hitting the top.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a buffer brake device for preventing an elevator car from falling and hitting the top, comprising: a guide rail, a car being provided on one side of the guide rail;

[0006] A side panel is installed on one side of the car, a limit plate is installed on the upper and lower sides of the side panel respectively, a buffer mechanism is installed on the other side of the limit plate, a mounting rod is installed on the lateral side of the side panel, a rail clamping device is installed on the other end of the mounting rod, and a sliding block is installed on the inner wall of one extending end of the rail clamping device.

[0007] Preferably, the buffer mechanism includes a movable column, a first spring, a buffer pad, a guide bar and an extrusion bar. The first spring is movably sleeved on the outer wall of the movable column. The bottoms of the movable column and the first spring are fixedly mounted on the surface of the buffer pad. A guide bar is fixedly mounted on the outer walls on both sides of the top of the movable column, and an extrusion bar is fixedly mounted on the outer wall on the other side of the top of the movable column.

[0008] Preferably, the connecting ends of the movable column, the guide bar and the extrusion bar pass through the limiting plate and are movably plugged into the inside of the side plate, and the side surface shape of the extrusion bar is a right-angled triangle structure.

[0009] Preferably, an indented semicircular strip groove is respectively provided on both sides of the guide rail, and the rail clamping device is movably connected to the indented semicircular strip groove via a sliding block.

[0010] Preferably, the rail clamping device comprises a transmission rod, a transmission plate, a second spring, a pressing rod, a friction plate, a convex point and a friction groove, one end of the transmission rod is fixedly connected with the transmission plate, the other side of the transmission plate is fixedly connected with the second spring, the inside of the second spring is sleeved with the pressing rod, the other end of the pressing rod is fixedly connected with the friction plate, the other side of the friction plate is fixedly installed with the convex point, and the convex point and the friction plate are movably installed in the inside of the friction groove.

[0011] Preferably, one end of the transmission rod is movably inserted in the inside of the rail clamping device, the other end of the transmission rod is movably inserted in the inside of the mounting rod, and the end of the transmission rod is movably connected with the outer wall of the pressing strip.

[0012] Preferably, one end of the transmission rod is movably inserted in the inside of the rail clamping device, the other end of the transmission rod is movably inserted in the inside of the mounting rod, and the end of the transmission rod is movably connected with the outer wall of the pressing strip.

[0013] Compared with the prior art, the rail clamping device has the beneficial effects that:

[0014] 1. When the elevator car descends uncontrollably, the car will drive the bottom buffer mechanism to approach the ground, and when the buffer mechanism contacts the ground, the movable column will shrink towards the inside of the side plate under the impact of the ground, so that the movable column will mobilize the pressing strip to move towards the inside of the side plate, the pressing strip will drive the transmission rod and the pressing rod to move towards one side of the guide rail when moving, so that the pressing rod will drive the friction plate and the convex point to be extruded and rubbed between the friction grooves, so that the descending speed of the car can be slowed down through the structure, and finally when the friction force between the friction plate and the friction groove is greater than or equal to the weight of the car, the car can stop descending, so that the function of preventing the car from falling can be achieved through the mechanism.

[0015] 2. When the elevator car normally operates, the second spring will drive the transmission rod to reset, so as to contact the extrusion and rubbing force between the friction plate and the friction groove, so that the car can normally operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a side view structure schematic diagram of the present application;

[0017] Fig. 2 It is a top view sectional structure schematic diagram of the present application;

[0018] Fig. 3 It is a connection structure schematic diagram of the movable column of the present application.

[0019] In the figure: 1, guide rail; 2, car; 3, side plate; 4, limiting plate; 5, movable column; 6, first spring; 7, buffer pad; 8, guide bar; 9, extrusion bar; 10, transmission rod; 11, transmission plate; 12, second spring; 13, extrusion rod; 14, friction plate; 15, convex point; 16, friction groove; 17, mounting rod; 18, rail clamping device; 19, sliding block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1-3 The present application provides a technical solution: a buffer brake device for preventing elevator car from falling and hitting the top, comprising: a guide rail 1, one side of the guide rail 1 is provided with a car 2;

[0022] One side of the car 2 is provided with a side plate 3, one limiting plate 4 is respectively installed on the upper and lower sides of the side plate 3, a buffer mechanism is installed on the other side of the limiting plate 4, a mounting rod 17 is installed on the lateral side of the side plate 3, a rail clamping device 18 is installed on the other end of the mounting rod 17, and a sliding block 19 is installed on the inner wall of the extended end of one side of the rail clamping device 18.

[0023] The buffer mechanism comprises a movable column 5, a first spring 6, a buffer pad 7, a guide bar 8 and an extrusion bar 9, the first spring 6 is movably sleeved on the outer wall of the movable column 5, the bottom of the movable column 5 and the first spring 6 is fixedly installed on the surface of the buffer pad 7, one guide bar 8 is respectively fixedly installed on the outer wall of the top of the movable column 5 on both sides, and one extrusion bar 9 is fixedly installed on the outer wall of the other side of the top of the movable column 5; the connection end of the movable column 5, the guide bar 8 and the extrusion bar 9 penetrates through the limiting plate 4 and is movably inserted into the inside of the side plate 3, the side surface of the extrusion bar 9 is in a right triangle structure; one recessed semicircular slot is respectively formed on both sides of the guide rail 1, the rail clamping device 18 is movably connected to the recessed semicircular slot through the sliding block 19, the limiting plate 4 moves synchronously with the buffer mechanism on one side when moving, the buffer pad 7 on the buffer mechanism contacts the ground or the top surface object, at this time, the buffer pad 7 extrudes the movable column 5 to move, the movable column 5 moves to the inside of the side plate 3 through the guide bar 8 on both sides when moving, and the movable column 5 moves to move the extrusion bar 9 on one side;

[0024] The rail clamping device 18 comprises a transmission rod 10, a transmission plate 11, a second spring 12, an extrusion rod 13, a friction plate 14, a convex point 15 and a friction groove 16, one end of the transmission rod 10 is fixedly connected with the transmission plate 11, the other side of the transmission plate 11 is fixedly connected with the second spring 12, the inside of the second spring 12 is sleeved with the extrusion rod 13, the other end of the extrusion rod 13 is fixedly connected with the friction plate 14, the other side of the friction plate 14 is fixedly installed with the convex point 15, the convex point 15 and the friction plate 14 are movably installed in the inside of the friction groove 16, when the extrusion strip 9 moves towards the inside of the side plate 3, the transmission rod 10 will be gradually pushed to one side, when the transmission rod 10 moves, the extrusion rod 13 will be moved by the transmission plate 11, when the extrusion rod 13 moves, the friction plate 14 will be moved, when the friction plate 14 moves, the convex point 15 on one side of the friction plate 14 will be extruded towards the inner wall of the friction groove 16;

[0025] One end of the transmission rod 10 is movably inserted into the inside of the rail clamping device 18, the other end of the transmission rod 10 is movably inserted into the inside of the mounting rod 17, the end of the transmission rod 10 is movably connected with the outer wall of the extrusion strip 9;

[0026] One end of the extrusion rod 13 is fixedly connected with the outer wall of the transmission plate 11, the friction groove 16 is formed in the outer wall of the guide rail 1.

[0027] As shown in the above, when the elevator car buffer brake device is used, Figs. 1-3 when the car 2 continuously rises or continuously descends, the car 2 will drive the corresponding limiting plate 4 to move, when the limiting plate 4 moves, the buffer mechanism on one side will be synchronously moved, when the buffer pad 7 on the buffer mechanism contacts with the ground or the top surface object, at this time, the buffer pad 7 will extrude the movable column 5 to move, when the movable column 5 moves, the extrusion strip 9 on one side will be moved by the two guide strips 8 towards the inside of the side plate 3, when the movable column 5 moves, the extrusion strip 9 on one side will be moved;

[0028] When the extrusion strip 9 moves towards the inside of the side plate 3, the transmission rod 10 will be gradually pushed to one side, when the transmission rod 10 moves, the extrusion rod 13 will be moved by the transmission plate 11, when the extrusion rod 13 moves, the friction plate 14 will be moved, when the friction plate 14 moves, the convex point 15 on one side of the friction plate 14 will be extruded towards the inner wall of the friction groove 16, so that the friction force between the friction plate 14 and the friction groove 16 will be increased;

[0029] As the car 2 continues to move up or down, the extrusion between the corresponding buffer pad 7 and the contact object will increase, so the movable column 5 will continue to move toward the inside of the side panel 3. When the side panel 3 moves, it will also drive the extrusion bar 9 to continuously squeeze the transmission rod 10 to one side, so that the friction between the friction plate 14 and the friction groove 16 will continue to increase. Finally, when the friction force is greater than the overall weight of the car 2, the car 2 will stop descending or rising. Therefore, when in use, this structure can prevent the car 2 from falling or hitting the top. This is the characteristic of the buffer braking device for the elevator car to prevent falling and hitting the top.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A buffer brake device for preventing an elevator car from falling and hitting the top, comprising: A guide rail (1), characterized in that a car (2) is provided on one side of the guide rail (1); A side panel (3) is installed on one side of the car (2), a limit plate (4) is installed on the upper and lower sides of the side panel (3), a buffer mechanism is installed on the other side of the limit plate (4), a mounting rod (17) is installed on the lateral side of the side panel (3), a rail clamping device (18) is installed on the other end of the mounting rod (17), and a sliding block (19) is installed on the inner wall of one side extension end of the rail clamping device (18); The buffer mechanism comprises a movable column (5), a first spring (6), a buffer pad (7), a guide bar (8) and an extrusion bar (9); the first spring (6) is movably sleeved on the outer wall of the movable column (5); the bottoms of the movable column (5) and the first spring (6) are fixedly mounted on the surface of the buffer pad (7); a guide bar (8) is fixedly mounted on the outer walls on both sides of the top of the movable column (5); and an extrusion bar (9) is fixedly mounted on the outer wall on the other side of the top of the movable column (5); The connecting ends of the movable column (5), the guide strip (8) and the extrusion strip (9) pass through the limiting plate (4) and are movably plugged into the inside of the side plate (3); the side surface of the extrusion strip (9) is in the shape of a right-angled triangle structure; The rail clamping device (18) comprises a transmission rod (10), a transmission plate (11), a second spring (12), an extrusion rod (13), a friction plate (14), a convex point (15) and a friction groove (16), wherein one end of the transmission rod (10) is fixedly connected to the transmission plate (11), the other side of the transmission plate (11) is fixedly connected to the second spring (12), the interior of the second spring (12) is sleeved with the extrusion rod (13), the other end of the extrusion rod (13) is fixedly connected to the friction plate (14), the other side of the friction plate (14) is fixedly mounted with the convex point (15), and the convex point (15) and the friction plate (14) are movably mounted inside the friction groove (16).

2. The buffer brake device for preventing an elevator car from falling and hitting the top according to claim 1, characterized in that: An indented semicircular strip groove is respectively provided on both sides of the guide rail (1), and the rail clamping device (18) is movably connected to the indented semicircular strip groove via a sliding block (19).

3. The buffer brake device for preventing an elevator car from falling and hitting the top according to claim 1, characterized in that: One end of the transmission rod (10) is movably inserted into the interior of the rail clamping device (18), the other end of the transmission rod (10) is movably inserted into the interior of the mounting rod (17), and the end of the transmission rod (10) is movably connected to the outer wall of the extrusion strip (9).

4. The buffer brake device for preventing an elevator car from falling and hitting the top according to claim 1, characterized in that: One end of the extrusion rod (13) is fixedly connected to the outer wall of the transmission plate (11), and the friction groove (16) is opened on the outer wall of the guide rail (1).

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