Hydraulic villa elevator

Abstract

The utility model relates to a hydraulic villa elevator which comprises a machine frame, a hydraulic cylinder fixed in the machine frame, a bearing beam fixed at the upper end of the hydraulic cylinder, a lift car fixed at the upper end of the bearing beam and a buffering cylinder fixed at the lower end of the bearing beam. The buffer cylinders are arranged on the two sides of the bearing beam, when an elevator normally operates, the buffer cylinders can prevent unbalance of the two sides of the lift car when a single hydraulic cylinder operates, and through the special internal design, the lift car can be buffered under the condition that the hydraulic cylinders fail, so that the lift car slowly descends, and the safety of internal personnel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic elevators, and more particularly to a hydraulic villa elevator. Background Technology

[0002] Hydraulic elevators are widely used in low-rise residential buildings due to their compact structure and smooth operation. Traditional designs rely on a single hydraulic cylinder to drive the car, posing significant safety hazards: if the hydraulic cylinder fails, the car is prone to a rapid fall, and existing safety clamps and other devices have limited response speed and buffering effect. Simultaneously, uneven car load can easily lead to off-center loading, exacerbating wear on the hydraulic system and affecting stability. Some improved solutions use dual hydraulic cylinders or add damping components, but these suffer from high cost, complex structure, or insufficient buffering capacity. Although existing hydraulic elevators have made some improvements to address these issues, certain shortcomings remain. For example, patent CN206624538U discloses an elevator fall buffer device that attempts to add spring buffers or hydraulic dampers to the bottom of the car or the end of the track. However, these devices are mostly passive emergency structures, only functioning when the car approaches the bottom of the shaft. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model aims to provide a hydraulic villa elevator that solves the problems existing in the prior art. It achieves this by symmetrically arranging buffer cylinders at the lower end of the load-bearing beam, with the buffer cylinder's oil cylinder and piston rod forming an auxiliary support structure. During normal operation: the buffer cylinders and hydraulic cylinders work together to counteract the eccentric load torque of the car in real time, ensuring uniform force distribution on the hydraulic cylinders and reducing wear. Simultaneously, in the event of hydraulic system failure, especially hydraulic cylinder failure, the oil in the buffer cylinders forms a controllable flow path through the through pipes and bypass pipes, reducing the hydraulic oil discharge rate and thus ensuring a smooth descent of the car.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic villa elevator, comprising a frame, a hydraulic cylinder fixed inside the frame, a load-bearing beam fixed to the upper end of the hydraulic cylinder, a car fixed to the upper end of the load-bearing beam, and a buffer cylinder fixed to the lower end of the load-bearing beam.

[0007] The buffer cylinder includes a hydraulic cylinder fixed to the lower end of the frame, a pressure relief mechanism fixed to the side of the hydraulic cylinder, a sealing ring fixed to the upper end of the hydraulic cylinder, a piston rod installed in the middle of the sealing ring, a fastening nut fixed to the bottom of the piston rod, and a piston ring fixed to the upper end of the fastening nut.

[0008] Preferably, the pressure relief mechanism includes a through pipe, a spring fixed inside the through pipe, and an adjusting ring fixed to the side of the spring.

[0009] Preferably, a limiting ring is provided inside the through pipe, a first oil port is provided at one end of the through pipe, a bypass pipe is connected to the first oil port, and a second oil port is provided at the other end of the bypass pipe.

[0010] Preferably, the adjusting ring includes a perforated baffle fixed to the side of the spring, a support plate fixed to the side of the perforated baffle, and an adjusting plate fixed to the side of the support plate.

[0011] (III) Beneficial Effects

[0012] The purpose of this utility model is to provide a hydraulic villa elevator. This hydraulic villa elevator uses buffer cylinders symmetrically arranged at the lower end of the load-bearing beam to dynamically offset the eccentric load torque of the car during normal operation, effectively reducing hydraulic cylinder wear and car swaying, and improving running stability. In the event of a sudden failure of the hydraulic cylinder, the pressure relief mechanism in the buffer cylinder controls the oil flow, allowing the car to descend slowly at a constant low speed, avoiding the risk of rapid descent. This is an innovative technology with broad application prospects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0014] Figure 2 This is a schematic diagram of the buffer cylinder in this utility model.

[0015] Figure 3 This is a schematic diagram of the pressure relief mechanism in this utility model.

[0016] Figure 4 This is a schematic diagram of the through pipe of this utility model.

[0017] Figure 5 This is a schematic diagram of the adjusting ring in this utility model.

[0018] In the diagram: 1-Frame, 2-Hydraulic cylinder, 3-Bearing beam, 4-Car, 5-Buffer cylinder, 501-Oil cylinder, 502-Pressure relief mechanism, 5021-Pass pipe, 5022-Spring, 5023-Adjusting ring, 5024-Limiting ring, 5025-First oil port, 5026-Bypass pipe, 5027-Second oil port, 5028-Baffle with perforation, 5029-Support plate, 50210-Adjusting plate, 503-Sealing ring, 504-Piston rod, 505-Piston ring, 506-Fasting nut. Detailed Implementation

[0019] The following will refer to the appendix in the example of this utility model. Figure 1 -Appendix Figure 5The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This utility model provides a technical solution: a hydraulic villa elevator, including a frame 1, a hydraulic cylinder 2 fixed inside the frame 1, a load-bearing beam 3 fixed to the upper end of the hydraulic cylinder 2, a car 4 fixed to the upper end of the load-bearing beam 3, and a buffer cylinder 5 fixed to the lower end of the load-bearing beam 3. The frame 1 serves as the main support structure of the elevator, bearing the entire weight of the hydraulic cylinder 2, the buffer cylinder 5, and the car 4, ensuring stable installation of each component. The hydraulic cylinder 2, as the core power source of the elevator, drives the piston movement through hydraulic oil, thereby raising and lowering the load-bearing beam 3 and the car 4. It provides a smooth driving force, realizing the vertical movement of the car and adapting to the low-speed and stable requirements of a villa elevator. The hydraulic cylinder 2 is connected to an external hydraulic source. The load-bearing beam 3 connects the hydraulic cylinder 2 and the car 4, and transmits the thrust of the hydraulic cylinder to the car 4; at the same time, it fixes the buffer cylinder 5, forming a balanced support structure. When the load-bearing beam 3 rises and falls, it will drive the buffer cylinder 5 to move. The buffer cylinder 5 is connected to the external oil tank. When the buffer cylinder 5 moves, it will draw in and discharge hydraulic oil. The buffer cylinder 5 serves as an auxiliary support structure to balance the off-center load moment of the car 4.

[0021] The buffer cylinder 5 includes a hydraulic cylinder 501 fixed to the lower end of the frame 1, a pressure relief mechanism 502 fixed to the side of the hydraulic cylinder 501, a sealing ring 503 fixed to the upper end of the hydraulic cylinder 501, a piston rod 504 installed in the middle of the sealing ring 503, a fastening nut 506 fixed to the bottom of the piston rod 504, and a piston ring 505 fixed to the upper end of the fastening nut 506. The hydraulic cylinder 501 contains hydraulic oil and provides a moving cavity for the piston rod 504. When hydraulic pressure is applied, the impact energy is absorbed by the compressibility of the oil, and a slow descent is achieved in conjunction with the pressure relief mechanism 502. The sealing ring 503 is installed at the upper end of the hydraulic cylinder 501, sealing the gap between the hydraulic cylinder 501 and the piston rod 504. This prevents oil leakage and ensures stable internal pressure in the buffer cylinder. The piston rod 504 connects the load-bearing beam 3 and the piston ring 505, transmitting the load of the car 4 to the oil inside the buffer cylinder 5. The piston ring 505 and the fastening nut 506 fix the piston rod 504 and seal the inner cavity of the hydraulic cylinder 501. Ensure that the oil flows only through the pressure relief mechanism 502 when the piston rod 504 moves, thus avoiding uncontrolled leakage.

[0022] The pressure relief mechanism 502 includes a through pipe 5021, a spring 5022 fixed inside the through pipe 5021, and an adjusting ring 5023 fixed to the side of the spring 5022. The through pipe 5021 serves as the main oil passage, connecting the internal and external oil circuits of the oil cylinder 501 and bearing half of the hydraulic oil flow. When the hydraulic cylinder 2 fails, the pressure inside the buffer cylinder 5 increases, pushing the adjusting ring 5023 to squeeze the spring 5022, thereby reducing the hydraulic oil flow and achieving a slow descent.

[0023] A limiting ring 5024 is provided inside the through pipe 5021. One end of the through pipe 5021 is provided with a first oil port 5025. The first oil port 5025 is connected to a bypass pipe 5026. The other end of the bypass pipe 5026 is provided with a second oil port 5027. The first oil port 5025, the second oil port 5027 and the bypass pipe 5026 form an oil circuit, which normally carries half of the hydraulic oil flow. The limiting ring 5024 is used to fix the position of the spring 5022.

[0024] The adjusting ring 5023 includes a perforated baffle 5028 fixed to the side of the spring 5022, a support plate 5029 fixed to the side of the perforated baffle 5028, and an adjusting plate 50210 fixed to the side of the support plate 5029. When the hydraulic system fails and the car 4 falls rapidly, the pressure inside the buffer cylinder 5 increases, pushing the adjusting ring 5023 to compress the spring 5022. At this time, the adjusting plate 50210 blocks the first oil port 5025, allowing hydraulic oil to flow only from the perforated baffle 5028. The support plate 5029 ensures that under normal circumstances, the adjusting plate 50210 will not block the first oil port 5025.

[0025] Working principle:

[0026] Hydraulic cylinder 2 is supplied with oil from an external hydraulic source, driving the piston rod of the hydraulic cylinder to rise, thus smoothly raising and lowering the load-bearing beam 3 and the car 4. During the movement of the load-bearing beam 3, the piston rod 504 of the buffer cylinder 5 moves up and down synchronously. When hydraulic cylinder 2 loses pressure due to a ruptured oil pipe, seal failure, or power interruption, the car 4 falls rapidly under gravity, pushing the piston rod 504 of the buffer cylinder 5 downwards quickly, causing a sudden increase in oil pressure within cylinder 501. Under pressure, the adjusting plate 50210 of the adjusting ring 5023 squeezes the spring 5022 towards the first oil port 5025, preventing hydraulic oil from flowing out of the bypass pipe 5026. This forces the oil to flow out through the tiny holes of the perforated baffle 5028, significantly reducing the flow rate and ensuring a slow descent of the car.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic villa elevator, characterized in that, Includes a frame (1), a hydraulic cylinder (2) fixed inside the frame (1), a load-bearing beam (3) fixed on the upper end of the hydraulic cylinder (2), a car (4) fixed on the upper end of the load-bearing beam (3), and a buffer cylinder (5) fixed on the lower end of the load-bearing beam (3); The buffer cylinder (5) includes a hydraulic cylinder (501) fixed at the lower end of the frame (1), a pressure relief mechanism (502) fixed on the side of the hydraulic cylinder (501), a sealing ring (503) fixed at the upper end of the hydraulic cylinder (501), a piston rod (504) installed in the middle of the sealing ring (503), a fastening nut (506) fixed at the bottom of the piston rod (504), and a piston ring (505) fixed at the upper end of the fastening nut (506).

2. A hydraulic villa elevator according to claim 1, characterized in that, The pressure relief mechanism (502) includes a through pipe (5021), a spring (5022) fixed inside the through pipe (5021), and an adjusting ring (5023) fixed to the side of the spring (5022).

3. A hydraulic villa elevator according to claim 2, characterized in that, The through pipe (5021) is provided with a limiting ring (5024) inside. One end of the through pipe (5021) is provided with a first oil port (5025). The first oil port (5025) is connected to a bypass pipe (5026) inward. The other end of the bypass pipe (5026) is provided with a second oil port (5027).

4. A hydraulic villa elevator according to claim 2, characterized in that, The adjusting ring (5023) includes a perforated baffle (5028) fixed to the side of the spring (5022), a support plate (5029) fixed to the side of the perforated baffle (5028), and an adjusting plate (50210) fixed to the side of the support plate (5029).

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