Car multi-chamber energy consumption buffer device

Abstract

The utility model relates to elevator safety protection technical field, and disclose a car multi -chamber energy -dissipating buffer device, including mounting bracket and the butt joint plate of being located mounting bracket one side, the butt joint plate side fixedly connected with round plate away from mounting bracket, the coaxial fixed connection of round plate side away from butt joint plate has center rod no.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety protection technology, specifically a multi-chamber energy-consuming buffer device for elevator cars. Background Technology

[0002] The multi-chamber energy-dissipating buffer device applied to elevator cars achieves graded absorption of impact energy and stable control of buffering force through a multi-chamber coordinated energy dissipation mechanism, ensuring the safety of the car and passengers.

[0003] With the acceleration of urbanization, the demand for super high-rise buildings (height ≥ 100m) and special elevators (such as construction elevators and explosion-proof elevators) continues to grow, placing higher demands on elevator car buffer devices for "high energy absorption efficiency, wide operating condition adaptability, and long service life." Currently, elevator car buffer devices are mainly divided into two categories: energy-dissipating (such as hydraulic buffers and gas buffers) and energy-storing (such as spring buffers and porous material buffers). Multi-chamber energy-dissipating buffer devices are safety devices that achieve efficient buffering through a multi-stage energy absorption mechanism, mainly used in elevators, rail transit, and other fields. Their core design decomposes the buffering process into the coordinated work of multiple independent chambers, dissipating impact energy step by step through the dynamic response of different materials or fluids, significantly improving buffering stability and energy absorption efficiency. However, in practical applications, the aforementioned multi-chamber energy-dissipating buffer device for car suffers from several drawbacks. Firstly, the multi-chamber device lacks coordination, has significant triggering delay, and mechanical components are prone to fatigue and breakage due to long-term cyclic stress. Secondly, the maintenance cost is high, the installation space is limited, and the pit excavation is restricted, making it impossible to install the buffer device. Therefore, we propose a multi-chamber energy-dissipating buffer device for car. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-chamber energy-consuming buffer device for car cabins, which solves the problems of insufficient coordination of multi-chamber devices, high maintenance costs, and limited installation space.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-chamber energy-consuming buffer device for a car, comprising a mounting frame and a docking plate disposed on one side of the mounting frame. A circular plate is fixedly connected to the side of the docking plate away from the mounting frame. A central rod is coaxially fixedly connected to the side of the circular plate away from the docking plate. A short hollow rod is provided on the side of the central rod away from the docking plate, and the side of the central rod near the short hollow rod extends into the center of the short hollow rod. A spring is fixedly connected to the side of the circular plate perpendicular to the central rod, and the spring is movably connected to the central rod. On the outer periphery, a long hollow rod is fixedly connected to the side of the short hollow rod away from the mounting bracket. A base plate is provided on the side of the long hollow rod away from the short hollow rod. A central rod two is coaxially fixedly connected to the side of the base plate near the long hollow rod, and the side of the central rod two near the long hollow rod extends into the center of the long hollow rod. A connecting rod is fixedly connected to the side of the central rod two away from the base plate. A spring three is fixedly connected to the side of the connecting rod away from the base plate, and the side of the spring three away from the connecting rod is fixedly connected to the inner upper wall of the long hollow rod. A strip-shaped component is fixedly installed on the outer periphery of the long hollow rod.

[0006] Preferably, the mating plate is snapped into the mounting frame on the side closest to the mounting frame, and a buffer pad is sandwiched between the mating plate and the mounting frame. Four sets of side fittings are evenly fixedly connected to the outer peripheral sidewall of the circular plate along the circumferential direction. A side rod is fixedly installed on the side of the side fitting away from the circular plate. A mating piece is fixedly connected to the outer sidewall of the short hollow rod at the position corresponding to the side rod, and the side of the side rod away from the side fitting passes through the mating piece and slides in cooperation with the mating piece.

[0007] Preferably, five sets of upright plates are evenly fixedly connected to the side of the central rod away from the mounting frame along the circumference. Each upright plate has a mounting block fixedly connected to its side wall away from the central rod. A support block is fixedly installed on the inner side wall of the short hollow rod at the position corresponding to the mounting block, and the side of the mounting block away from the upright plate is movably inserted into the inner groove of the support block.

[0008] Preferably, a second spring is fixedly connected to the side of the base plate near the long hollow rod, and the second spring is movably connected to the outer periphery of the second central rod. A sealing ring adapted to the outer wall of the second central rod is provided on the side of the long hollow rod near the second central rod.

[0009] Preferably, a piston head is installed on the side of the connecting rod near the spring member three, and the piston head is installed through the connecting rod on the side near the connecting rod. Four sets of oil ports are evenly provided on the outer peripheral sidewall of the piston head.

[0010] Preferably, an oil pump interface is inserted and installed on the outer wall of the long hollow rod near the strip, and the oil pump interface is installed through the strip on the side near the strip. A sensing mechanism is fixedly installed on the side of the strip away from the central rod. An insert plate is fixedly installed on the side of the base plate near the strip, and the insert plate is installed through the strip on the side away from the base plate. The side of the insert plate near the sensing mechanism is movably engaged with the sensing mechanism.

[0011] In summary, the technical effects and advantages of this utility model are as follows: 1. In this utility model, a segmented upper and lower double-cavity structure is innovatively constructed by coaxially assembling a central rod one at the top center of a short hollow rod, fixing a long hollow rod at the bottom center of the short hollow rod, and coaxially assembling a central rod two at the bottom center of the long hollow rod. This design allows the two cavities to simultaneously achieve buffer support. On the one hand, it can evenly distribute the impact load to the two independent cavities, effectively avoiding the overload failure problem caused by concentrated load in traditional single-cavity systems (such as cavity deformation and excessively rapid loss of internal buffer medium). On the other hand, the load sharing between the two cavities can significantly reduce fatigue damage to individual cavities and internal components, reduce the overall maintenance frequency caused by the failure of local components, and thus greatly improve the stability and service life of the device during cyclic use, extending its maintenance cycle.

[0012] 2. In this utility model, a direct top connection structure is formed by fixing a connecting plate and its supporting components to the top of the short hollow rod, and setting an appropriate mounting bracket on the top of the connecting plate. This overcomes the technical limitations of traditional buffer devices that rely on bottom pre-embedded fixing. Traditional bottom pre-embedded methods require excavating a shaft pit and pouring a fixed foundation, resulting in a large amount of construction work and limitations imposed by underground pipelines, pit depth, and other scenarios (such as adding elevators to old buildings). In contrast, this device directly connects the top components to the bottom of the elevator car, eliminating the need for complex pre-embedded construction and significantly reducing installation time and project costs. Simultaneously, this top connection structure works synergistically with the segmented double-cavity buffer mechanism, simplifying the installation process while ensuring that the buffer protection effect on the elevator car is not diminished, significantly improving the device's practicality and adaptability to different elevator scenarios. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a multi-chamber energy-consuming buffer device for a car according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the mounting frame, connecting plate, and short hollow rod of this utility model. Figure 3 This is a schematic diagram of the overall structure of the docking plate of this utility model; Figure 4 This is a schematic diagram of the overall structure of the short hollow rod of this utility model; Figure 5This is a schematic diagram of the overall structure of the long hollow rod of this utility model; Figure 6 This is a schematic diagram of the overall structure of the base plate of this utility model.

[0014] In the diagram: 1. Mounting bracket; 101. Buffer pad; 2. Connecting plate; 201. Circular plate; 202. Center rod one; 203. Side mounting component; 204. Side rod; 205. Vertical plate; 206. Insertion block; 207. Spring component one; 3. Short hollow rod; 301. Connecting component; 302. Support block; 4. Long hollow rod; 401. Sealing ring; 402. Oil pump interface; 5. Base plate; 501. Center rod two; 502. Connecting rod; 503. Spring component two; 504. Piston head; 505. Oil port; 506. Spring component three; 507. Insertion strip plate; 6. Strip component; 601. Sensing mechanism. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] refer to Figures 1-6 The multi-chamber energy-dissipating buffer device for a car shown includes a mounting frame 1 and a docking plate 2 disposed on one side of the mounting frame 1. A specific embodiment is shown below: Example

[0017] The mating plate 2 is snapped into the mounting frame 1 on the side closest to the mounting frame 1. A buffer pad 101 is sandwiched between the mating plate 2 and the mounting frame 1. A circular plate 201 is fixedly connected to the side of the mating plate 2 away from the mounting frame 1. A central rod 202 is coaxially fixedly connected to the side of the circular plate 201 away from the mating plate 2. Five sets of upright plates 205 are evenly fixedly connected circumferentially on the side of the central rod 202 away from the mounting frame 1. An insert block 206 is fixedly connected to the side wall of the upright plate 205 away from the central rod 202. Example

[0018] A short hollow rod 3 is provided on the side of the central rod 202 away from the docking plate 2, and the side of the central rod 202 near the short hollow rod 3 extends into the center of the short hollow rod 3. A spring member 207 is fixedly connected to the side of the circular plate 201 perpendicular to the central rod 202, and the spring member 207 is movably connected to the outer periphery of the central rod 202. Four sets of side-mounted members 203 are evenly fixedly connected to the outer periphery of the circular plate 201 along the circumferential direction. The side-mounted members 203 are away from the circular plate. A side rod 204 is fixedly installed on one side of the short hollow rod 3. A connecting piece 301 is fixedly connected to the outer side wall of the short hollow rod 3 at the position corresponding to the side rod 204. The side of the side rod 204 away from the side mounting piece 203 passes through the connecting piece 301 and slides with the connecting piece 301. A support block 302 is fixedly installed on the inner side wall of the short hollow rod 3 at the position corresponding to the insertion block 206. The side of the insertion block 206 away from the upright plate 205 is movably inserted into the inner groove of the support block 302. Example

[0019] A long hollow rod 4 is fixedly connected to the side of the short hollow rod 3 away from the mounting bracket 1. A base plate 5 is provided on the side of the long hollow rod 4 away from the short hollow rod 3. A center rod 501 is coaxially fixedly connected to the side of the base plate 5 near the long hollow rod 4. The side of the center rod 501 near the long hollow rod 4 extends into the center of the long hollow rod 4. A connecting rod 502 is fixedly connected to the side of the center rod 501 away from the base plate 5. A spring 506 is fixedly connected to the side of the connecting rod 502 away from the base plate 5. The side of the spring 506 away from the connecting rod 502 is fixedly connected to the upper inner wall of the long hollow rod 4. Example

[0020] A spring component 503 is fixedly connected to the side of the base plate 5 near the long hollow rod 4, and the spring component 503 is movably connected to the outer periphery of the center rod 501. A sealing ring 401 adapted to the outer wall of the center rod 501 is provided on the side of the long hollow rod 4 near the center rod 501. A piston head 504 is installed on the side of the connecting rod 502 near the spring component 506, and the piston head 504 is installed through the connecting rod 502 on the side near the connecting rod 502. Four sets of oil ports 505 are evenly provided on the outer periphery of the piston head 504. Example

[0021] A strip 6 is fixedly installed on the outer periphery of the long hollow rod 4. An oil pump interface 402 is inserted into the outer wall of the long hollow rod 4 near the strip 6, and the side of the oil pump interface 402 near the strip 6 is installed through the strip 6. A sensing mechanism 601 is fixedly installed on the side of the strip 6 away from the central rod 501. An insert plate 507 is fixedly installed on the side of the base plate 5 near the strip 6, and the side of the insert plate 507 away from the base plate 5 is installed through the strip 6. The side of the insert plate 507 near the sensing mechanism 601 is movably engaged with the sensing mechanism 601.

[0022] Working principle of this utility model: First, when the elevator car falls due to an anomaly (such as speed governor failure or wire rope breakage), the bottom of the car first contacts the mounting bracket 1 at the top of the device, triggering a buffering process due to the downward impact. The buffer pad 101 between the docking plate 2 and the mounting bracket 1 first performs preliminary vibration reduction, absorbing some high-frequency impact vibrations and preventing rigid forces from being directly transmitted to the subsequent cavity structure. The force attenuated by the buffer pad continues to be transmitted to the circular plate 201 below the docking plate. The circular plate acts as a force transfer carrier, simultaneously driving the central rod 202 at its lower end and the outer spring 207 to move downwards to the short hollow rod 3, activating the upper cavity buffering.

[0023] Secondly, the short hollow rod 3 constitutes the "upper cavity" of the device. The core absorbs impact energy through elastic deformation. When the circular plate 201 drives the central rod 202 to extend into the short hollow rod 3, the spring component 207 on the outer periphery of the circular plate is squeezed by the upper end face of the short hollow rod 3, generating elastic deformation. The deformation process of the spring component 207 converts part of the impact kinetic energy into elastic potential energy, realizing the first stage of energy dissipation and initially reducing the impact load. In order to avoid the central rod 202 shifting inside the short hollow rod and causing buffer failure, the side mounting component 203 on the outer periphery of the circular plate 201 drives the side rod 204 to slide along the docking component 301 on the outer side of the short hollow rod. At the same time, the vertical plate 205 at the lower end of the central rod 202 drives the insertion block 206 to move in the slot of the support block 302 on the inner side of the short hollow rod. The two sets of guiding structures form a "radial bidirectional limit" to ensure that the central rod 202 moves along the axial direction of the short hollow rod 3 and avoids the cavity being overloaded.

[0024] Then, the long hollow rod 4 forms the "lower cavity" of the device, achieving efficient energy dissipation in the second stage through a composite mechanism of "elastic buffering + hydraulic damping". After the upper cavity completes the initial energy dissipation, the short hollow rod 3 transmits the remaining impact force to the long hollow rod 4 fixed at its lower end. The long hollow rod 4 then presses down, generating relative movement with the bottom plate 5 below, activating the buffering of the lower cavity. When the long hollow rod 4 presses down, its lower end face presses against the spring element 503 on the outer periphery of the bottom plate 5. The spring element 503 is distributed around the central rod 501. After being compressed, it undergoes elastic deformation, further converting the impact kinetic energy into elastic potential energy, achieving the second stage of elastic energy dissipation. Simultaneously, the long hollow rod 4 presses down... The center rod 501 at the upper end of the base plate 5 extends into the long hollow rod 4, driving the connecting rod 502 at its upper end and the piston head 504 to move upward. Since hydraulic oil is pre-injected into the long hollow rod 4 through the oil pump interface 402 and the sealing ring 401 ensures the cavity is sealed, the piston head 504 will squeeze the hydraulic oil in the long hollow rod when it moves. The throttling effect of the oil in the oil port 505 generates damping force, converting the impact kinetic energy into the heat energy of the oil, realizing the third stage of main energy consumption, and greatly reducing the remaining impact load.

[0025] Finally, during the downward pressing of the long hollow rod 4, the insert plate 507 at the upper end of the base plate 5 moves downward synchronously with the base plate. The insert plate 507 passes through the strip 6 on the outside of the long hollow rod and forms a relative displacement with the sensing mechanism 601 on the strip. The sensing mechanism 601 monitors the moving distance of the insert plate 507 in real time and determines whether the buffer stroke exceeds the safety threshold. If it approaches the limit stroke, an early warning can be triggered to avoid excessive compression and damage to the cavity.

[0026] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer for control.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-chamber energy-dissipating buffer device for a car, comprising a mounting frame (1) and a docking plate (2) disposed on one side of the mounting frame (1), characterized in that: A circular plate (201) is fixedly connected to the side of the docking plate (2) away from the mounting frame (1). A central rod (202) is coaxially fixedly connected to the side of the circular plate (201) away from the docking plate (2). A short hollow rod (3) is provided on the side of the central rod (202) away from the docking plate (2), and the side of the central rod (202) near the short hollow rod (3) extends into the center of the short hollow rod (3). A spring element (207) is fixedly connected to the side of the circular plate (201) perpendicular to the central rod (202), and the spring element (207) is movably connected to the outer periphery of the central rod (202). A long hollow rod (4) is fixedly connected to the side of the short hollow rod (3) away from the mounting frame (1). The long hollow rod (4) has a base plate (5) on the side away from the short hollow rod (3). The base plate (5) is coaxially fixedly connected to the side of the long hollow rod (4) with a central rod two (501). The side of the central rod two (501) near the long hollow rod (4) extends into the center of the long hollow rod (4). The side of the central rod two (501) away from the base plate (5) is fixedly connected to a connecting rod (502). The side of the connecting rod (502) away from the base plate (5) is fixedly connected to a spring three (506). The side of the spring three (506) away from the connecting rod (502) is fixedly connected to the upper inner wall of the long hollow rod (4). A strip-shaped piece (6) is fixedly installed on the outer periphery of the long hollow rod (4).

2. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: The docking plate (2) is snapped into the mounting frame (1) on the side near the mounting frame (1), and a buffer pad (101) is sandwiched between the docking plate (2) and the mounting frame (1).

3. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: Four sets of side fittings (203) are uniformly fixedly connected to the outer peripheral sidewall of the circular plate (201) along the circumferential direction. A side rod (204) is fixedly installed on the side of the side fitting (203) away from the circular plate (201). A docking piece (301) is fixedly connected to the outer sidewall of the short hollow rod (3) at the position corresponding to the side rod (204). The side of the side rod (204) away from the side fitting (203) passes through the docking piece (301) and slides with the docking piece (301).

4. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: Five sets of upright plates (205) are evenly fixedly connected to the side of the central rod (202) away from the mounting frame (1) along the circumference. Each upright plate (205) has a mounting block (206) fixedly connected to its side wall away from the central rod (202).

5. The multi-chamber energy-dissipating buffer device for a car according to claim 4, characterized in that: A support block (302) is fixedly installed on the inner wall of the short hollow rod (3) at the position corresponding to the insertion block (206), and the side of the insertion block (206) away from the upright plate (205) is movably inserted into the inner groove of the support block (302).

6. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: The bottom plate (5) is fixedly connected to a spring element two (503) on the side near the long hollow rod (4), and the spring element two (503) is movably connected to the outer periphery of the center rod two (501). The long hollow rod (4) is provided with a sealing ring (401) that is adapted to the outer wall of the center rod two (501) on the side near the center rod two (501).

7. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: A piston head (504) is installed on the side of the connecting rod (502) near the spring member (506), and the piston head (504) is installed through the connecting rod (502) on the side of the connecting rod (502). Four sets of oil ports (505) are evenly provided on the outer peripheral sidewall of the piston head (504).

8. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: An oil pump interface (402) is inserted and installed on the outer side wall of the long hollow rod (4) near the strip (6), and the oil pump interface (402) is installed through the strip (6) on the side near the strip (6).

9. The multi-chamber energy-dissipating buffer device for a car according to claim 1, characterized in that: A sensing mechanism (601) is fixedly installed on the side of the strip (6) away from the center rod (501). A strip plate (507) is fixedly installed on the side of the base plate (5) close to the strip (6). The side of the strip plate (507) away from the base plate (5) is installed through the strip (6). The side of the strip plate (507) close to the sensing mechanism (601) is movablely engaged with the sensing mechanism (601).

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