Lifting platform for ultra-low temperature environment

Abstract

The utility model discloses a lifting platform technical field's a lifting platform for ultralow temperature environment, including lifting platform body, and set in the lower part of lifting platform body and be used for driving its lifting's hydraulic cylinder, still include the protective cover of the sleeve of hydraulic cylinder outside, and set up on the hot air circulation subassembly of protective cover, and protective cover is used for blocking cold air and enters the hydraulic cylinder, and hot air circulation subassembly is used for the sustained circulation delivery hot air in protective cover to carry out heat preservation to the hydraulic cylinder and its surrounding space, protective cover includes fixed cover body and movable cover body, and movable cover body telescopicly connect in the top of fixed cover body, and with lifting platform body fixed connection. The lifting platform adopts the protective cover to effectively isolate the invasion of external cold air to the hydraulic cylinder and its pipeline, adopts hot air circulation subassembly to further actively heat preservation to the hydraulic cylinder and its pipeline, prevents the phenomenon that the viscosity of hydraulic oil appears to rise even solidification under ultralow temperature, thereby guarantees the normal operation of hydraulic system under ultralow temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, specifically to a lifting platform for ultra-low temperature environments. Background Technology

[0002] Lifting platforms often need to operate in ultra-low temperature environments, such as rehabilitation treatment platforms in cryotherapy chambers and operating tables in low-temperature experimental equipment. Traditional lifting platforms mostly use hydraulic cylinder drive structures, which have advantages such as high load-bearing capacity and structural stability, but they have obvious adaptability defects under ultra-low temperature conditions (-120℃ to -180℃).

[0003] Existing lifting platform protective structures typically only provide simple external shielding for the hydraulic cylinder body, lacking effective insulation measures. In ultra-low temperature environments ranging from -120℃ to -180℃, hydraulic oil is prone to increased viscosity or even solidification due to the extremely low temperature, leading to sluggish response and unstable operation of the hydraulic system, and in severe cases, even system failure. Furthermore, the hydraulic system's pipelines are often exposed and lack effective antifreeze protection, further exacerbating the performance degradation of the hydraulic system at low temperatures.

[0004] To address these issues, a lifting platform for ultra-low temperature environments is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting platform for ultra-low temperature environments, which solves the problem that the hydraulic oil of existing hydraulic lifting platforms becomes too viscous or even solidifies at ultra-low temperatures, thus affecting the normal operation of the lifting system.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A lifting platform for ultra-low temperature environments includes a lifting platform body, a hydraulic cylinder located below the lifting platform body for driving its lifting and lowering, a protective cover sleeved on the outside of the hydraulic cylinder, and a hot air circulation assembly on the protective cover. The protective cover is used to prevent cold air from entering the hydraulic cylinder, and the hot air circulation assembly is used to continuously circulate hot air into the protective cover to insulate the hydraulic cylinder and its surrounding space. The protective cover includes a fixed cover and a movable cover. The movable cover is telescopically connected to the top of the fixed cover and fixedly connected to the lifting platform body, and extends and retracts synchronously with the lifting platform body. The hot air circulation assembly includes a ring pipe fixedly sleeved on the movable cover. The ring pipe has multiple branch pipes evenly distributed along the circumference, which extend into the protective cover and have nozzles at their ends.

[0008] As a further optimization of this utility model, a plurality of guide rods evenly distributed along the circumference are fixedly provided at the bottom edge of the lifting platform, and a fixing frame for each guide rod to move through is provided below the lifting platform.

[0009] As a further optimization of this utility model, the fixed cover is a cylindrical structure that is closed at the bottom and open at the top.

[0010] As a further optimization of this utility model, the hot air circulation assembly also includes a fan and a heating box; the air outlet of the fan is connected to the air inlet of the heating box through a pipe, the air outlet of the heating box is provided with an air inlet pipe connected to the ring pipe, and the air inlet of the fan is provided with a return air pipe connected to the protective cover.

[0011] As a further optimization of this utility model, the hydraulic cylinder is provided with multiple oil pipes; the protective cover also includes multiple protective pipes integrally formed with the fixed cover body, each protective pipe is for the corresponding oil pipe to pass through, and isolates cold air from intrusion; the hot air circulation assembly also includes multiple air ducts, one end of each air duct is connected to the ring pipe, and the other end extends into the interior of the corresponding protective pipe, for guiding hot air to be sprayed to the area around the oil pipe.

[0012] As a further optimization of this utility model, the ring pipe, exhaust pipe, air inlet pipe and return pipe are all covered with a heat insulation layer; the protective cover is covered with a heat insulation layer, which includes a rigid heat insulation section fixed at the bottom and a corrugated telescopic heat insulation section at the top.

[0013] As a further optimization of this utility model, the connection between the fixed cover and the movable cover is surrounded by an airbag sealing assembly, which is used to seal the gap between the two when the lifting platform is in a stationary state; the airbag sealing assembly includes an annular airbag body, an inflation pipe and an deflation pipe connected to the annular airbag body, and an inflation pump connected to the inflation pipe, and both the inflation pipe and the deflation pipe are equipped with solenoid valves.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a hydraulic cylinder as the driving component, which can stably bear a load of 200kg, allowing the human body to stand. The protective cover effectively isolates the hydraulic cylinder and its pipeline from external cold air, preventing the hydraulic oil from increasing in viscosity or even solidifying at ultra-low temperatures, thereby ensuring the normal operation of the hydraulic system in ultra-low temperature environments.

[0016] 2. This utility model uses a hot air circulation component to actively heat and insulate the hydraulic cylinder and its pipelines, and works synergistically with the protective cover to achieve a dual protection effect. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 2This is a schematic diagram of the lifting platform and hydraulic cylinder structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the hot air circulation component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the airbag sealing assembly structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the assembly of the present invention in a cryotherapy chamber device. Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the assembly of the present invention in a cryotherapy chamber device. Figure 2 .

[0023] In the picture:

[0024] 1. Lifting platform body; 101. Guide rod; 102. Fixing frame; 2. Hydraulic cylinder; 201. Oil pipe; 3. Protective cover; 301. Fixed cover body; 302. Movable cover body; 303. Protective pipe; 4. Hot air circulation assembly; 401. Ring pipe; 402. Air intake pipe; 403. Branch pipe; 404. Nozzle; 405. Fan; 406. Heating box; 407. Air inlet pipe; 408. Air return pipe; 5. Airbag sealing assembly; 501. Annular airbag body; 502. Inflation pipe; 503. Deflator pipe; 504. Solenoid valve; 505. Inflation pump. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Example 1

[0027] To address the issue of existing hydraulic lifting platforms' hydraulic oil becoming excessively viscous or even solidifying at ultra-low temperatures (e.g., -120°C to -180°C), thus affecting the normal operation of the lifting system, please refer to [link to relevant documentation]. Figures 1-3 , Figures 5-6This utility model provides a lifting platform for ultra-low temperature environments, including a lifting platform body 1 and a hydraulic cylinder 2 located below the lifting platform body 1 for driving its lifting. The lifting platform body 1 itself is made of a low-temperature special alloy material, and its surface is coated with an anti-slip, low-temperature resistant composite material. It also includes a protective cover 3 fitted over the hydraulic cylinder 2, and a hot air circulation assembly 4 installed on the protective cover 3. The protective cover 3 is used to prevent cold air from entering the hydraulic cylinder 2, and the hot air circulation assembly 4 is used to continuously circulate hot air into the protective cover 3 to keep the hydraulic cylinder 2 and its surrounding space warm. The protective cover 3 includes a fixed cover 301 and a movable cover 302, and the movable cover 302 is telescopically connected to the fixed cover. The top of the fixed cover 301 is fixedly connected to the lifting platform 1 and extends and retracts synchronously with the lifting platform 1. The fixed cover 301 is a cylindrical structure with a closed bottom and an open top. The hydraulic cylinder 2 is located inside the fixed cover 301. The closed bottom of the fixed cover 301 is used to prevent cold air from entering the interior of the protective cover 3 from below. The hot air circulation assembly 4 includes an annular pipe 401 fixedly sleeved on the movable cover 302. The annular pipe 401 is provided with multiple branch pipes 403 evenly distributed along the circumference. The branch pipes 403 extend into the protective cover 3 and are provided with nozzles 404 at the ends for evenly spraying hot air to the area around the hydraulic cylinder 2. The multi-point uniform air supply design ensures comprehensive hot air coverage and avoids local overcooling.

[0028] Multiple guide rods 101 evenly distributed along the circumference are fixedly provided at the bottom edge of the lifting platform body 1, and a fixing frame 102 is provided below the lifting platform body 1 for each guide rod 101 to move through. The guide rods 101 and the fixing frame 102 form a guiding fit structure, which is used to guide and limit the lifting platform body 1 during the lifting process to prevent it from deviating or shaking.

[0029] The hot air circulation assembly 4 also includes a fan 405 and a heating box 406; the air outlet of the fan 405 is connected to the air inlet of the heating box 406 through a pipe, the air outlet of the heating box 406 is provided with an air inlet pipe 407 connected to the ring pipe 401, which is used to transport the heated air to the inside of the protective cover 3, and the air inlet of the fan 405 is provided with a return air pipe 408 connected to the protective cover 3, forming a closed hot air circulation path.

[0030] When the lifting platform needs to be raised or lowered, the movable cover 302 extends and retracts with the rise or fall of the lifting platform 1, always maintaining the coverage and protection of the hydraulic cylinder 2, isolating it from the intrusion of external cold air, and at the same time providing a good sealed channel for hot air circulation, enhancing heating efficiency. When the lifting platform is stationary, the hot air circulation component 4 is started, and the fan 405 draws air into the system. The air enters the heating box 406 and is heated. The heated air is delivered through the air inlet pipe 407 to the ring pipe 401 fixed on the movable cover 302. The hot air is then introduced into the protective cover 3 through multiple branch pipes 403 on the ring pipe 401, and is evenly sprayed onto the surface of the hydraulic cylinder 2 and its surrounding space through the nozzle 404. The used air returns to the fan 405 through the return air pipe 408, forming a closed hot air circulation path.

[0031] This lifting platform uses a hydraulic cylinder 2 as the driving component, capable of stably bearing a 200kg load, sufficient for a person to stand upright. To ensure the normal operation of the hydraulic system in ultra-low temperature environments, the lifting platform is equipped with a protective cover 3 and a hot air circulation component 4, forming a complete thermal insulation and protection system. The protective cover 3 adopts a telescopic structure, which not only adapts to the needs of lifting movements but also effectively isolates external cold air intrusion, improving the thermal insulation efficiency of the internal space. The hot air circulation component 4 continuously heats and insulates the hydraulic cylinder 2 and its surrounding area, achieving active thermal insulation of the hydraulic cylinder 2 in ultra-low temperature environments, preventing the hydraulic oil from increasing in viscosity or even solidifying due to low temperatures, and improving the system's response speed and operational stability. This lifting platform can work reliably in ultra-low temperature environments and is suitable for lifting platform applications in low-temperature environments such as cryotherapy chambers.

[0032] Example 2

[0033] Based on Example 1, in order to address the problem of hydraulic system pipelines being prone to condensation, freezing, or viscosity increase in ultra-low temperature environments, such as... Figures 2-3 As shown, the hydraulic cylinder 2 is provided with multiple oil pipes 201; the protective cover 3 also includes multiple protective pipes 303 integrally formed with the fixed cover body 301, each protective pipe 303 is provided for the corresponding oil pipe 201 to pass through, and isolates the cold air from intrusion; the hot air circulation assembly 4 also includes multiple air ducts 402, one end of each air duct 402 is connected to the ring pipe 401, and the other end extends into the interior of the corresponding protective pipe 303, for guiding hot air to be sprayed to the area around the oil pipe 201, so as to achieve local heating and heat preservation of the oil pipe 201.

[0034] Multiple oil pipes 201 on the hydraulic cylinder 2 pass through corresponding protective pipes 303. The protective pipes 303 are made of metal or composite materials and are integrally formed with the fixed cover 301 to form a closed channel, preventing external cold air from directly contacting the oil pipes 201. The ring pipe 401 in the hot air circulation assembly 4 distributes the heated air to multiple air ducts 402. Each air duct 402 delivers hot air to the interior of the corresponding protective pipe 303 to locally heat the oil pipes 201 passing through it. As the hot air flows in the protective pipe 303, it continuously heats the surface of the oil pipes 201 to maintain a suitable working temperature. The cooled air returns to the fan 405 with the hot air circulation system for reheating, completing the closed-loop circulation.

[0035] Based on the fixed cover 301, the movable cover 302, and the ring pipe 401, a special protective pipe 303 for the oil pipe 201 and a hot air duct 402 are further added to achieve dual protection for the oil pipe 201 path. First, it physically isolates the external cold air, and second, it maintains the flow performance of the oil through local hot air heating. The hot air is directly guided to the area around each oil pipe 201 to form point-to-point local heating, which effectively improves the reliability and stability of the entire hydraulic system under ultra-low temperature conditions and avoids system response delays or failures caused by oil circuit obstruction.

[0036] The ring pipe 401, the exhaust pipe 402, the inlet pipe 407, and the return pipe 408 are all covered with an insulation layer; the protective cover 3 is covered with an insulation layer, which includes a fixed rigid insulation section at the bottom and a corrugated telescopic insulation section at the top. The corrugated structure expands and contracts synchronously with the lifting and lowering of the movable cover 302 to adapt to the movement requirements of the protective cover 3 and maintain good insulation performance.

[0037] Example 3

[0038] Based on Embodiments 1 and 2, in order to improve the operational stability and sealing reliability of the protective cover 3 in ultra-low temperature environments, such as... Figure 1 , Figure 4 As shown, the connection between the fixed cover 301 and the movable cover 302 is surrounded by an airbag sealing assembly 5, which is used to seal the gap between the two when the lifting platform is stationary.

[0039] The airbag sealing assembly 5 includes an annular airbag body 501, an inflation tube 502 and a deflation tube 503 connected to the annular airbag body 501, and an inflation pump 505 connected to the inflation tube 502. Solenoid valves 504 are provided on both the inflation tube 502 and the deflation tube 503.

[0040] When the lifting platform is stationary, the air pump 505 is started, and air is injected into the annular airbag body 501 through the air injection pipe 502. After the annular airbag body 501 expands, it tightly fits the connection gap between the fixed cover 301 and the movable cover 302, forming a good sealing barrier. When lifting operation is required, the solenoid valve 504 on the vent pipe 503 is first opened to allow the annular airbag body 501 to quickly depressurize and retract, releasing the sealing state. Then, the hydraulic cylinder 2 starts to move, driving the lifting platform 1 to rise or fall. At this time, the movable cover 302 moves synchronously and is not hindered by the sealing force of the annular airbag body 501. After the lifting is in place, the control system starts the air pump 505 again to inflate the airbag, re-establishing the sealing environment to maintain the internal temperature of the protective cover 3, improve the overall sealing protection level of the protective cover 3, and prevent frost and moisture intrusion.

[0041] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A lifting platform for cryogenic environments, comprising a lifting platform body (1) and a hydraulic cylinder (2) disposed below the lifting platform body (1) for driving its lifting and lowering, characterized in that: It also includes a protective cover (3) fitted outside the hydraulic cylinder (2) and a hot air circulation assembly (4) provided on the protective cover (3). The protective cover (3) is used to block cold air from entering the hydraulic cylinder (2), and the hot air circulation assembly (4) is used to continuously circulate hot air into the protective cover (3) to keep the hydraulic cylinder (2) and its surrounding space warm. The protective cover (3) includes a fixed cover (301) and a movable cover (302). The movable cover (302) is telescopically connected to the top of the fixed cover (301) and fixedly connected to the lifting platform (1), and telescopically extends and retracts with the lifting platform (1). The hot air circulation assembly (4) includes a ring pipe (401) fixedly sleeved on the movable cover (302). The ring pipe (401) is provided with a plurality of branch pipes (403) evenly distributed along the circumference. The branch pipes (403) extend into the protective cover (3) and are provided with nozzles (404) at their ends.

2. The lifting platform for ultra-low temperature environments according to claim 1, characterized in that, The bottom edge of the lifting platform (1) is fixed with a plurality of guide rods (101) evenly distributed along the circumference, and a fixing frame (102) is provided below the lifting platform (1) for each guide rod (101) to move through.

3. The lifting platform for ultra-low temperature environments according to claim 1, characterized in that, The fixed cover (301) is a cylindrical structure that is closed at the bottom and open at the top.

4. The lifting platform for ultra-low temperature environments according to claim 1, characterized in that, The hot air circulation assembly (4) also includes a fan (405) and a heating box (406); The air outlet of the fan (405) is connected to the air inlet of the heating box (406) through a pipe. The air outlet of the heating box (406) is provided with an air inlet pipe (407) connected to the ring pipe (401). The air inlet of the fan (405) is provided with a return air pipe (408) connected to the protective cover (3).

5. A lifting platform for ultra-low temperature environments according to claim 4, characterized in that, The hydraulic cylinder (2) is provided with multiple oil pipes (201); The protective cover (3) also includes multiple protective tubes (303) integrally formed with the fixed cover body (301), each protective tube (303) is provided for the corresponding oil pipe (201) to pass through, and is isolated from cold air invasion; The hot air circulation assembly (4) also includes multiple air ducts (402), one end of each air duct (402) is connected to the ring pipe (401), and the other end extends into the corresponding protective pipe (303) to guide hot air to be sprayed to the area around the oil pipe (201).

6. A lifting platform for ultra-low temperature environments according to claim 5, characterized in that, The ring pipe (401), the exhaust pipe (402), the inlet pipe (407), and the return pipe (408) are all covered with a heat insulation layer; The protective cover (3) is covered with an insulation layer, which includes a fixed rigid insulation section at the bottom and a corrugated telescopic insulation section at the top.

7. A lifting platform for ultra-low temperature environments according to claim 1, characterized in that, The connection between the fixed cover (301) and the movable cover (302) is surrounded by an airbag sealing assembly (5), which is used to seal the gap between the two when the lifting platform is stationary. The airbag sealing assembly (5) includes an annular airbag body (501), an inflation tube (502) and a deflation tube (503) connected to the annular airbag body (501), and an inflation pump (505) connected to the inflation tube (502). Solenoid valves (504) are provided on both the inflation tube (502) and the deflation tube (503).

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