Elevator buffer protection device

Abstract

The utility model discloses an elevator buffer protection device, which comprises a positioning bottom plate and is provided with a buffer component, so that when an elevator car collides with the buffer component under an out-of-control or abnormal condition, the generated impact force is transmitted to hydraulic oil in the buffer component through a piston rod and a piston head, and the hydraulic oil moves along with the movement of a piston; when the piston head moves, oil in the working cavity is compressed, the pressure of the oil is increased accordingly, in the moving process of the piston head, the oil flows out through the gap between the piston head and the cylinder body and enters the space above the piston head, the gap becomes smaller and smaller along with continuous moving of the piston head, and therefore the oil flowing-out resistance is gradually increased; the resistance consumes the kinetic energy of the elevator car, so that the impact speed of the elevator car is reduced, and the impact force generated during emergency braking or collision of the elevator can be more effectively absorbed and dispersed through the cooperative work of the protection assembly and the matched buffering assembly, so that the overall buffering effect is improved, and the risk of hard landing of the elevator car is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator buffer protection device. Background Art

[0002] The elevator buffer device is an elevator safety device that provides the last type of safety protection. It is installed in the bottom pit of the elevator shaft, directly below the car and counterweight. When the elevator is moving upward or downward, due to wire rope breakage, traction friction, insufficient brake braking force, or control system failure, the buffer will act as a buffer to prevent the elevator car or counterweight from directly hitting the bottom or top, thereby protecting the safety of passengers and equipment. As an important part of the elevator safety system, the elevator buffer protection device has always received widespread attention. With the continuous development of elevator technology, the performance and reliability requirements of the buffer protection device are becoming higher and higher.

[0003] With the development of science and technology, floors are getting higher and higher, and there are more and more large-capacity elevators. The traditional spring buffer for elevator cars has only one buffering effect, and the first-level buffering effect is poor, which cannot effectively protect the safety of the elevator car and passengers. Therefore, we need to propose an elevator buffer protection device. Utility Model Content

[0004] The utility model aims to provide an elevator buffer protection device, aiming to solve the problem that the spring buffer for the elevator car in the prior art has only one buffering effect, and the primary buffering effect is poor, and cannot effectively ensure the safety of the elevator car and passengers.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An elevator buffer protection device comprises: a positioning base plate, a supporting plate is arranged above the positioning base plate; a buffer component arranged between the positioning base plate and the supporting plate for providing protection for the elevator car and people in the car, the buffer components are arranged in four groups, and are symmetrically arranged in pairs; and a positioning plate fixedly installed at the bottom of the supporting plate, the bottom of the positioning plate is provided with four groups of grooves in a circular array, and protection components are arranged inside the four groups of grooves, and the bottoms of the four groups of protection components are connected to the top of the positioning base plate.

[0007] Preferably, the buffer assembly includes an outer shell, the outer shell is fixedly mounted on the top of the positioning base plate, an oil storage chamber is provided inside the outer shell, a piston rod is inserted into the interior of the outer shell, the bottom end of the piston rod is fixedly connected to a piston head, the piston head is slidably connected to the inner wall of the outer shell, the top end of the piston rod is fixedly connected to a mounting plate, and the mounting plate is fixedly mounted on the bottom of the support plate.

[0008] Preferably, it further comprises a first spring, the top end of which is fixedly connected to the bottom of the mounting plate, the bottom end of which is fixedly connected to the top of the outer shell, and the first spring is movably sleeved on the outer wall of the piston rod.

[0009] Preferably, the protective assembly includes a sliding rod, both ends of which are fixedly connected to the inner walls on both sides of the groove, and a sliding block is slidably connected to the outer wall of the sliding rod. The bottom of the sliding block is fixedly connected to a first hinge seat, the bottom of the first hinge seat is hinged with a connecting rod, the bottom end of the connecting rod is hinged with a second hinge seat, and the second hinge seat is fixedly connected to the top of the positioning base plate.

[0010] Preferably, it further includes a second spring, one end of which is fixedly connected to an inner wall of one side of the groove, the other end of which is fixedly connected to one side of the slider, and the second spring is movably sleeved on the outer wall of the slide rod.

[0011] Preferably, the bottom of the positioning plate is fixedly connected with four groups of air cushion columns in a circular array, and the bottoms of the four groups of air cushion columns are fixedly connected to the top of the positioning base plate.

[0012] Preferably, a third spring is sleeved on the outer walls of the four groups of air cushion columns, and the top of the supporting plate is fixedly connected to the air cushion plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides a buffer assembly. When the elevator car hits the buffer assembly in an out-of-control or abnormal situation, the impact force generated is transmitted to the hydraulic oil inside the buffer assembly through the piston rod and the piston head. As the piston moves, the oil in the working chamber is compressed, and the oil pressure increases accordingly. During the movement of the piston head, the oil flows out through the gap between the piston head and the cylinder body and enters the space above the piston head. As the piston head continues to move, the gap becomes smaller and smaller, resulting in a gradual increase in the resistance to the outflow of the oil. This resistance consumes the kinetic energy of the elevator car, thereby slowing down its impact speed.

[0015] 2. Through the coordinated work of the protective components and the buffer components, the impact force generated by the elevator during emergency braking or collision can be more effectively absorbed and dispersed, thereby improving the overall buffering effect and reducing the risk of hard landing of the elevator car. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the shaft side of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the buffer component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the positioning plate and the protective assembly of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the protective component of the utility model.

[0021] In the figure: 1. positioning base plate; 2. supporting plate; 3. buffer assembly; 301. outer shell; 302. oil storage chamber; 303. piston rod; 304. piston head; 305. mounting plate; 4. positioning plate; 5. groove; 6. protection assembly; 601. sliding rod; 602. sliding block; 603. first hinge seat; 604. connecting rod; 605. second hinge seat; 7. first spring; 8. second spring; 9. air cushion column; 10. third spring; 11. air cushion plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] An elevator buffer protection device comprises: a positioning base plate 1, a supporting plate 2 is arranged above the positioning base plate 1; a buffer component 3 is arranged between the positioning base plate 1 and the supporting plate 2 for providing protection for the elevator car and the personnel in the car, and the buffer components 3 are arranged in four groups and are arranged symmetrically in pairs; and a positioning plate 4 fixedly installed at the bottom of the supporting plate 2, and the bottom of the positioning plate 4 is provided with four groups of grooves 5 in a circular array, and a protective component 6 is arranged inside the four groups of grooves 5, and the bottoms of the four groups of protective components 6 are all connected to the top of the positioning base plate 1. The utility model can more effectively absorb and disperse the impact force generated by the elevator during emergency braking or collision by arranging the coordinated work of the buffer component 3 and the protective component 6, thereby improving the overall buffering effect and reducing the risk of hard landing of the elevator car;

[0025] The buffer assembly 3 includes an outer shell 301, which is fixedly mounted on the top of the positioning base plate 1. An oil storage chamber 302 is arranged inside the outer shell 301. A piston rod 303 is inserted into the inner part of the outer shell 301. The bottom end of the piston rod 303 is fixedly connected to a piston head 304. The piston head 304 is slidably connected to the inner wall of the outer shell 301. The top end of the piston rod 303 is fixedly connected to a mounting plate 305. The mounting plate 305 is fixedly mounted on the bottom of the supporting plate 2. When the elevator car hits the buffer assembly in an out-of-control or abnormal situation, the impact generated by it The impact force is transmitted to the hydraulic oil in the oil storage chamber 302 through the piston rod 303 and the piston head 304. As the piston moves, the oil in the oil storage chamber 302 is compressed, and the oil pressure increases accordingly. During the movement of the piston head 304, the oil flows out through the gap between the piston head 304 and the inner wall of the outer shell 301 and enters the space above the piston head 304. As the piston head 304 continues to move, the gap becomes smaller and smaller, resulting in a gradual increase in resistance to the outflow of the oil. This resistance consumes the kinetic energy of the elevator car, thereby slowing down its impact speed.

[0026] It also includes a first spring 7, the top end of the first spring 7 is fixedly connected to the bottom of the mounting plate 305, the bottom end of the first spring 7 is fixedly connected to the top of the outer shell 301, and the first spring 7 is movably sleeved on the outer wall of the piston rod 303, and the deformation of the first spring 7 provides a buffering effect for the elevator car;

[0027] The protection component 6 includes a slide bar 601, the two ends of the slide bar 601 are respectively fixedly connected to the inner walls of the groove 5 on both sides, a slider 602 is slidably connected to the outer wall of the slide bar 601, the bottom of the slider 602 is fixedly connected to a first hinge seat 603, the bottom of the first hinge seat 603 is hinged to a connecting rod 604, the bottom end of the connecting rod 604 is hinged to a second hinge seat 605, and the second hinge seat 605 is fixedly connected to the top of the positioning base plate 1;

[0028] It also includes a second spring 8, one end of which is fixedly connected to the inner wall of one side of the groove 5, and the other end of the second spring 8 is fixedly connected to one side of the slider 602, and the second spring 8 is movably sleeved on the outer wall of the slide bar 601;

[0029] It should be noted that when the elevator car impacts the supporting plate 2, the supporting plate 2 moves downward, and the slider 602 slides along the axial direction of the slide bar 601. At this time, the slider 602 generates an extrusion force on the second spring 8, and the deformation of the second spring 8 is used to provide a buffering effect for the supporting plate 2, thereby protecting the elevator car and the passengers inside.

[0030] The bottom of the positioning plate 4 is fixedly connected with four groups of air cushion columns 9 in a circular array, and the bottoms of the four groups of air cushion columns 9 are fixedly connected to the top of the positioning base plate 1. The outer walls of the four groups of air cushion columns 9 are sleeved with third springs 10, and the top of the supporting plate 2 is fixedly connected with an air cushion plate 11. By arranging the air cushion columns 9 and the air cushion plate 11, the elevator car first contacts the air cushion plate 11, which can provide the first line of defense for the elevator car, and then the impact force acts on the supporting plate 2. The four groups of air cushion columns 9 and the third spring 10 work together to provide multiple buffering protections for the elevator car, provide more protection for the elevator car and the passengers inside, and reduce the risk of hard landing of the elevator car.

[0031] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator buffer protection device, characterized in that: include: A positioning base plate (1), wherein a supporting plate (2) is arranged above the positioning base plate (1); A buffer assembly (3) is arranged between the positioning base plate (1) and the supporting plate (2) for providing protection for the elevator car and people in the car, wherein the buffer assembly (3) is arranged in four groups and is symmetrically arranged in pairs; and A positioning plate (4) is fixedly mounted on the bottom of the supporting plate (2), and the bottom of the positioning plate (4) is provided with four groups of grooves (5) in a circular array, and The protection components (6) are arranged inside the four groups of grooves (5), and the bottoms of the four groups of protection components (6) are connected to the top of the positioning base plate (1).

2. An elevator buffer protection device according to claim 1, characterized in that: The buffer assembly (3) comprises an outer shell (301), the outer shell (301) is fixedly mounted on the top of the positioning base plate (1), an oil storage chamber (302) is arranged inside the outer shell (301), a piston rod (303) is inserted into the inner part of the outer shell (301), the bottom end of the piston rod (303) is fixedly connected to a piston head (304), the piston head (304) is slidably connected to the inner wall of the outer shell (301), the top end of the piston rod (303) is fixedly connected to a mounting plate (305), and the mounting plate (305) is fixedly mounted on the bottom of the supporting plate (2).

3. An elevator buffer protection device according to claim 2, characterized in that: It also includes a first spring (7), the top end of which is fixedly connected to the bottom of the mounting plate (305), the bottom end of which is fixedly connected to the top of the outer shell (301), and the first spring (7) is movably sleeved on the outer wall of the piston rod (303).

4. An elevator buffer protection device according to claim 1, characterized in that: The protective component (6) includes a sliding rod (601), the two ends of which are fixedly connected to the inner walls of the groove (5) on both sides, and a slider (602) is slidably connected to the outer wall of the sliding rod (601). The bottom of the slider (602) is fixedly connected to a first hinge seat (603), the bottom of the first hinge seat (603) is hinged to a connecting rod (604), the bottom end of the connecting rod (604) is hinged to a second hinge seat (605), and the second hinge seat (605) is fixedly connected to the top of the positioning base plate (1).

5. An elevator buffer protection device according to claim 4, characterized in that: It also includes a second spring (8), one end of which is fixedly connected to an inner wall of one side of the groove (5), the other end of which is fixedly connected to one side of the slider (602), and the second spring (8) is movably sleeved on the outer wall of the slide rod (601).

6. An elevator buffer protection device according to claim 1, characterized in that: The bottom of the positioning plate (4) is fixedly connected to four groups of air cushion columns (9) in a circular array, and the bottoms of the four groups of air cushion columns (9) are all fixedly connected to the top of the positioning base plate (1).

7. An elevator buffer protection device according to claim 6, characterized in that: The outer walls of the four groups of air cushion columns (9) are sleeved with third springs (10), and the top of the supporting plate (2) is fixedly connected with an air cushion plate (11).

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