Height adjustable evacuation platform

Abstract

The utility model discloses a height adjustable evacuation platform belongs to lifting platform technical field, and this platform includes bottom plate, hydraulic cylinder, bearing plate and spacing post, the spacing post includes the fixed frame of fixed in bottom plate, and with the synchronous lifting of bearing plate and is arranged in fixed frame in the lifting column of wearing, lifting column is equipped with the tooth groove, the fixed frame is provided with the spring and bevel clamping plate, the spring drives bevel clamping plate with tooth groove one -way interlock, to form mechanical locking, spacing post still includes the pull rod for pulling bevel clamping plate to remove the lock. The utility model discloses through setting up the mechanical locking mechanism of independent hydraulic system, can automatically carry out physical locking to the platform when hydraulic system failure, thoroughly eliminates the risk of accidental falling, greatly improves the security, and, through the splicing structure of platform board, realizes the flexible adjustment of evacuation area, improves the environmental adaptability.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a height-adjustable evacuation platform. Background Technology

[0002] Height-adjustable lifting platforms, as important vertical transportation and operation equipment, have been widely used in construction, equipment maintenance, warehousing and logistics. In recent years, with the development of urban emergency rescue systems, these platforms have also been increasingly used in disaster scenarios such as fires and earthquakes, serving as temporary evacuation routes connecting different heights and transferring trapped personnel.

[0003] Currently, most lifting platforms on the market use hydraulic systems as their lifting power source due to their advantages such as smooth transmission, large lifting capacity, and easy stepless speed regulation. However, a hydraulic system is essentially a "soft" connection system that relies on fluid pressure for energy transfer, and its inherent structural characteristics determine that it has inherent safety risks.

[0004] In practical use, hydraulic systems may experience a sudden loss of pressure due to factors such as aging and ruptured oil pipes, seal failure, or sudden power outages or damage to the hydraulic pump. In such cases, if the platform lacks additional and effective safety protection devices, the platform will experience a rapid and uncontrolled descent under gravity. For platforms carrying evacuees, the consequences of such an accident would be catastrophic. Although some hydraulic platforms are equipped with hydraulic locks or explosion-proof valves, these devices are usually still part of the hydraulic circuit, and their protective function may fail in the event of extreme failures such as physical pipe ruptures.

[0005] Therefore, this utility model proposes a height-adjustable evacuation platform to address the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a height-adjustable evacuation platform, which aims to improve the safety hazards of sudden fall when the hydraulic system fails in existing hydraulic lifting platforms, and the fixed evacuation area of ​​the platform, which is difficult to adapt to different site requirements.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a height-adjustable evacuation platform, comprising: a base plate, a hydraulic cylinder, a lifting plate, a sleeve column, a sliding column, and a bearing plate, as well as a limiting column. The limiting column includes a fixed frame, a lifting column, a beveled plate, a spring, and a pull rod. The outer wall of the lifting column is provided with toothed grooves distributed along its length. The fixed frame is fixedly connected to the base plate. The lifting column slides vertically through the fixed frame and is fixedly connected to the bearing plate. The beveled plate is movably connected to the fixed frame. The two ends of the spring abut against the inner wall of the fixed frame and the beveled plate, respectively, to drive the teeth of the beveled plate toward the toothed grooves. One end of the pull rod is connected to the beveled plate, and the other end of the pull rod extends out of the fixed frame.

[0008] Preferably, a limiting frame is fixedly connected to the top of the support plate.

[0009] Preferably, the limiting frame includes a first platform plate and a second platform plate that can be spliced ​​together.

[0010] Preferably, a round handle is provided on one side of the first platform plate, and a round groove is provided on the side wall of the second platform plate to engage with the round handle.

[0011] Preferably, the upper surfaces of both the first platform plate and the second platform plate are provided with multiple anti-slip grooves.

[0012] Preferably, the side of the inclined plate facing the lifting column is a guide slope, and the teeth of the inclined plate are located at the upper end of the guide slope.

[0013] Preferably, the bottom of the lifting plate is rotatably connected to the end of the piston rod of the hydraulic cylinder.

[0014] Preferably, the pull rod and the inclined plate are hinged.

[0015] This utility model has the following beneficial effects: 1. This utility model, by setting up a ratchet-type mechanical locking mechanism composed of a lifting column, toothed groove, inclined plate and spring, works independently of the hydraulic system. It solves the serious safety hazard of sudden fall when the hydraulic system fails in existing hydraulic lifting platforms. It can automatically and reliably lock the platform physically under any circumstances, thereby completely eliminating the risk of accidental fall and greatly improving the safety and reliability of the equipment in evacuation scenarios.

[0016] 2. This utility model solves the limitation of existing evacuation platforms having a fixed area and being difficult to adapt to different evacuation width requirements by making the platform plate an independent module with a round handle and a round groove insertion structure. It achieves the effect of being able to quickly and manually splice and combine the platform, flexibly expand the evacuation area, and improve the environmental adaptability and evacuation efficiency of the platform. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a height-adjustable evacuation platform proposed in this utility model; Figure 2 A schematic diagram of a sliding column structure for a height-adjustable evacuation platform proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded structural diagram of the platform plate of a height-adjustable evacuation platform proposed in this utility model.

[0018] Legend: 1. Base plate; 101. Hydraulic cylinder; 102. Lifting plate; 2. Sleeve column; 201. Sliding column; 3. Bearing plate; 4. Limiting frame; 401. First platform plate; 402. Second platform plate; 403. Round handle; 404. Round groove; 405. Anti-slip groove; 5. Limiting column; 501. Lifting column; 502. Fixing frame; 503. Tie rod; 504. Spring; 505. Beveled clamping plate; 506. Toothed groove. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4 An embodiment of this utility model provides: a height-adjustable evacuation platform, including a base plate 1, which serves as the mounting base for the entire device. A cylinder body of a hydraulic cylinder 101 is fixedly connected to the base plate 1. A lifting plate 102 is connected to the piston rod end of the hydraulic cylinder 101. The bottom of the lifting plate 102 is rotatably connected to the piston rod end of the hydraulic cylinder 101. The bottom end of a sleeve column 2 is fixedly connected to the lifting plate 102. A sliding column 201 is slidably fitted inside the sleeve column 2. A bearing plate 3 is fixedly connected to the top of the sliding column 201. The height-adjustable evacuation platform also includes a limiting column 5, which includes a fixed frame 502. The bottom of the fixed frame 502 is fixedly connected to the base plate 1. A lifting column 501 is vertically slidably inserted inside the fixed frame 502. The top of the lifting column 501 is fixedly connected to the bearing plate 3, so that the lifting column 501 can move synchronously with the lifting of the bearing plate 3. The outer side wall of the lifting column 501 is provided with toothed grooves 506 distributed along the length of the lifting column 501. The fixed frame 502 is movably connected to the inclined plate 505, which corresponds to the position of the lifting column 501. A spring 504 is also provided in the fixed frame 502. The two ends of the spring 504 abut against the inner wall of the fixed frame 502 and the inclined plate 505 respectively. The spring 504 continuously drives the teeth of the inclined plate 505 toward the tooth groove 506 to achieve automatic engagement. The side of the inclined plate 505 facing the lifting column 501 is a guide slope. The teeth of the inclined plate 505 are located at the upper end of the guide slope, so that when the lifting column 501 moves upward, the teeth of the inclined plate 505 can slide through the tooth groove 506 step by step. When the lifting column 501 has a downward tendency, the teeth of the inclined plate 505 can immediately engage in the tooth groove 506. The side wall of the fixed frame 502 is provided with a through hole for the pull rod 503 to pass through. One end of the pull rod 503 is connected to the inclined plate 505, and the pull rod 503 is hinged to the inclined plate 505. The other end of the pull rod 503 passes through the fixed frame 502 for external operation. The top of the support plate 3 is also fixedly connected to a limiting frame 4. The limiting frame 4 is used to define the installation area of ​​the platform plate and provide structural support. The limiting frame 4 includes a first platform plate 401 and a second platform plate 402 that can be spliced ​​together. To achieve flexible expansion of the platform area, a round handle 403 is machined on one side of the first platform plate 401, and a round groove 404 adapted to the shape and size of the round handle 403 is opened on the corresponding side wall of the second platform plate 402. In the assembled state, the round handle 403 of the first platform plate 401 is aligned and inserted into the round groove 404 of the second platform plate 402 to form a quick and stable plug-in mating structure, which ensures that multiple platform plates can be quickly connected or disassembled, thereby realizing flexible adjustment of the evacuation platform area. To further enhance safety during personnel evacuation, multiple anti-slip grooves 405 are provided on the upper surfaces of the first platform plate 401 and the second platform plate 402. The anti-slip grooves 405 increase the friction of the platform surface and effectively prevent people from slipping in an emergency. To ensure smoother and more reliable transmission during the lifting process, the bottom of the lifting plate 102 is rotatably connected to the piston rod end of the hydraulic cylinder 101, thereby avoiding jamming caused by installation errors or uneven force. To ensure the flexibility and reliability of the pull rod 503, the pull rod 503 is hinged to the inclined plate 505. The hinge structure ensures that when the pull rod 503 is pulled, the force can be effectively transmitted to the inclined plate 505 to complete the unlocking action.

[0021] Working principle: When the platform height needs to be raised, the hydraulic cylinder 101 installed on the base plate 1 is activated. The piston rod of the hydraulic cylinder 101 extends upward, pushing the lifting plate 102 to rise. The lifting plate 102 drives the sleeve column 2 to move upward. At the same time, the sliding column 201 inside the sleeve column 2 slides upward, thereby smoothly lifting the bearing plate 3 and the limiting frame 4 fixedly connected to the upper part of the bearing plate 3. During the process of the platform rising, the lifting column 501 fixedly connected to the bearing plate 3 slides upward synchronously relative to the fixed frame 502. Under the action of the spring 504, the inclined plate 505 is always pushed towards the lifting column 501. The teeth of the inclined plate 505 slide upward step by step along the tooth groove 506 on the side of the lifting column 501 and automatically engage, forming a one-way ratchet locking structure. This structure can effectively prevent sudden fall caused by hydraulic system failure when the platform is rising or suspended. When it is necessary to lower the platform height, first pull the lever 503 outward. The lever 503 drives the inclined plate 505 to move backward against the elastic force of the spring 504 through the hinge structure, so that the teeth of the inclined plate 505 completely disengage from the tooth groove 506 and release the safety lock. Then, control the hydraulic cylinder 101 to retract, and the platform will descend smoothly to the predetermined height under its own gravity. When it is necessary to expand the evacuation area, the first platform plate 401 can be taken, and the round handle 403 on one side of the first platform plate 401 can be aligned with the round groove 404 on the side of another installed second platform plate 402 and pushed in vertically. The plug-in structure of the round handle 403 and the round groove 404 can ensure a quick and stable connection between the plates, thereby realizing flexible adjustment of the platform width. The anti-slip groove 405 on the surface of the platform plate is used to enhance the safety of personnel evacuation.

Claims

1. A height-adjustable evacuation platform, comprising: The base plate (1) and the hydraulic cylinder (101) are fixedly connected to the base plate (1); A lifting plate (102) is provided, the bottom of which is connected to the end of the piston rod of the hydraulic cylinder (101). Sleeve column (2), the bottom end of which is fixedly connected to the lifting plate (102); A sliding post (201) is slidably fitted inside the sleeve post (2); The support plate (3), which is fixedly connected to the top of the sliding column (201), is characterized in that it further includes: The limiting post (5) includes: a fixed frame (502), a beveled plate (505), a spring (504), a pull rod (503), and a lifting post (501). The bottom of the fixed frame (502) is fixedly connected to the base plate (1). The lifting post (501) slides vertically through the fixed frame (502), and the top of the lifting post (501) is fixedly connected to the bearing plate (3). The outer side wall of the lifting post (501) is provided with a length along its length. The toothed grooves (506) are distributed in the degree direction. The inclined plate (505) is movably connected to the fixed frame (502). The two ends of the spring (504) abut against the inner wall of the fixed frame (502) and the inclined plate (505) respectively, so as to drive the teeth of the inclined plate (505) toward the toothed grooves (506). One end of the pull rod (503) is connected to the inclined plate (505), and the other end of the pull rod (503) passes through the fixed frame (502).

2. The height-adjustable evacuation platform according to claim 1, characterized in that: The top of the support plate (3) is fixedly connected to a limiting frame (4).

3. The height-adjustable evacuation platform according to claim 2, characterized in that: The limiting frame (4) includes a first platform plate (401) and a second platform plate (402) that can be spliced ​​together.

4. The height-adjustable evacuation platform according to claim 3, characterized in that: A round handle (403) is provided on one side of the first platform plate (401), and a round groove (404) is provided on the side wall of the second platform plate (402) to engage with the round handle (403).

5. The height-adjustable evacuation platform according to claim 3, characterized in that: Multiple anti-slip grooves (405) are provided on the upper surfaces of the first platform plate (401) and the second platform plate (402).

6. The height-adjustable evacuation platform according to claim 1, characterized in that: The inclined plate (505) facing the lifting column (501) is a guide slope, and the teeth of the inclined plate (505) are located at the upper end of the guide slope.

7. The height-adjustable evacuation platform according to claim 1, characterized in that: The bottom of the lifting plate (102) is rotatably connected to the end of the piston rod of the hydraulic cylinder (101).

8. The height-adjustable evacuation platform according to claim 1, characterized in that: The pull rod (503) is hinged to the inclined plate (505).

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