Oil storage device for hydraulic lifting platform of laser cutting machine

Abstract

The utility model belongs to laser cutting machine technical field, concretely relates to a kind of oil storage device for laser cutting machine hydraulic lifting platform, including oil tank main body, the oil tank main body inside is equipped with the cavity for storing hydraulic oil, top is equipped with flange, bottom is equipped with oil drain, still include interlayer space, phase change material, metal heat conduction framework and thermal insulation layer;The interlayer space is arranged at the outside of the side wall and bottom of oil tank main body, forms a closed cavity;The phase change material is filled in the interlayer space, and its phase transition temperature is matched with the normal working temperature range of hydraulic oil;The metal heat conduction framework is arranged in the interlayer space, and is closely combined with the outer wall of oil tank main body;The thermal insulation layer is coated in the outside of the interlayer space.This oil storage device utilizes the heat storage characteristics of phase change material, realizes the passive, automatic heat management to hydraulic oil.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting machine technology, specifically relating to an oil storage device for a hydraulic lifting platform of a laser cutting machine. Background Technology

[0002] Laser cutting machines, with their high precision and efficiency, are widely used in metal processing, sheet metal cutting, and other industrial fields. As a crucial component of laser cutting machines, the hydraulic lifting platform is responsible for adjusting the height of the worktable. Its normal operation depends on the stable transmission and pressure maintenance of hydraulic oil in the hydraulic system. However, in cold regions, outdoor operations in winter, or low-temperature workshops, hydraulic oil is prone to solidification due to excessively low temperatures, causing a sharp increase in viscosity and a significant decrease in fluidity. This not only makes it difficult to start and operate the hydraulic lifting platform, but may also lead to malfunctions such as hydraulic pump idling and pipeline blockage. In severe cases, it can even damage hydraulic components, affecting equipment efficiency and lifespan, resulting in economic losses.

[0003] Currently, a common solution to the problem of hydraulic oil solidification in low-temperature environments is to directly heat the oil by embedding a heating rod in the oil tank. However, this method has significant drawbacks: uneven heating, with heat concentrated around the heating rod, easily causing localized overheating and insufficient overall oil temperature; high energy consumption, requiring continuous operation to compensate for heat loss; poor safety, as the heating rod directly contacts the oil, posing risks of overheating and combustion, electric leakage, or oil contamination; furthermore, it is entirely dependent on external power supply, losing its heat preservation ability once the power is cut off, resulting in limited adaptability.

[0004] Therefore, there is an urgent need for a new type of oil storage device that can safely, uniformly, and efficiently maintain the working temperature of hydraulic oil without relying on external continuous energy, so as to ensure the stable operation of laser cutting machines in low-temperature environments. Utility Model Content

[0005] The purpose of this invention is to provide an oil storage device for a hydraulic lifting platform of a laser cutting machine, so as to solve the problems existing in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An oil storage device for a hydraulic lifting platform of a laser cutting machine includes an oil tank body, the oil tank body having an internal cavity for storing hydraulic oil, a flange at the top, an oil drain port at the bottom, and also includes a sandwich space, a phase change material, a metal heat-conducting frame, and a heat insulation layer. The interlayer space is located on the outer side of the side wall and bottom of the main body of the fuel tank, forming a closed cavity; The phase change material is filled in the interlayer space, and its phase change temperature matches the normal operating temperature range of the hydraulic oil. The metal thermally conductive skeleton is disposed within the interlayer space and is tightly fitted to the outer wall of the tank body; The insulation layer covers the outside of the interlayer space.

[0007] Preferably, the interlayer space is formed by welding a metal shell to the outer wall of the fuel tank body.

[0008] Preferably, the metal thermally conductive skeleton has a mesh structure with uniformly distributed circular holes.

[0009] Preferably, the metal heat-conducting frame is made of aluminum and is fixed to the interlayer space by welding.

[0010] Preferably, it further includes an elastic buffer material, which is disposed within the interlayer space to buffer the volume change stress generated during the phase change of the phase change material.

[0011] Preferably, the elastic cushioning material is closed-cell rubber foam.

[0012] Preferably, the insulation layer is made of polyurethane foam material and is fixed by adhesive bonding.

[0013] Preferably, the main body of the fuel tank is made of high-strength carbon steel.

[0014] The beneficial effects of this invention are as follows: This oil storage device utilizes the heat storage and release characteristics of phase change materials to achieve passive and automatic thermal management of hydraulic oil. It not only efficiently absorbs and stores the waste heat generated during the operation of the hydraulic system, but also stably releases heat in low-temperature environments, effectively preventing the hydraulic oil from solidifying and ensuring the rapid start-up and stable operation of the lifting platform under frigid conditions. Compared to traditional electric heating methods, this method requires no additional electrical energy, significantly reducing equipment energy consumption and operating costs.

[0015] Meanwhile, the device ensures uniform heat distribution on the tank wall through a built-in metal heat-conducting frame, avoiding the risk of localized overheating, and greatly reduces heat loss when combined with an external insulation layer. All heating and insulation elements are placed in a closed jacket, completely physically isolated from the hydraulic oil, thoroughly eliminating safety hazards such as leakage, pollution, or combustion. It has a simple and reliable structure, is easy to maintain, and has a long service life. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of the overall structure of this utility model. Detailed Implementation

[0017] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0021] like Figure 1 As shown, this utility model discloses an oil storage device for a hydraulic lifting platform of a laser cutting machine. This device mainly consists of, from the inside out, the main body of the oil tank 1, the interlayer space 2, the phase change material 3, the metal heat-conducting frame 4, the elastic buffer material 5, the metal shell (not separately labeled in the figure) and the insulation layer 6.

[0022] First, the main body 1 of the oil tank is a rectangular, sealed container made of Q235B high-strength carbon steel plate, welded together. Its interior forms the main cavity for storing hydraulic oil. A flange 1.1 is located on the top of the main body 1, with several threaded holes evenly distributed on it for installing the oil tank cover. At the lowest point of the bottom of the main body 1, a drain port 1.2 with internal threads is welded for connecting a drain valve, facilitating hydraulic oil replacement.

[0023] Secondly, the interlayer space 2 is constructed as follows: an outer metal shell made of cold-rolled steel sheet, matching the shape of the outer surface of the four side walls and bottom of the fuel tank body 1, is fixed by welding. The metal shell maintains a uniform distance of about 40mm from the outer wall of the fuel tank body 1, thereby forming a sealed interlayer space 2 surrounding the side walls and bottom of the fuel tank.

[0024] Subsequently, a metal thermally conductive frame 4, made of 1060 aluminum alloy sheet with excellent thermal conductivity, is welded and fixed inside the interlayer space 2. The frame 4 has a three-dimensional mesh structure with circular holes of about 10 mm in diameter distributed on the mesh. The design of the frame 4 ensures that it has a large surface area, while achieving a tight fit with the outer wall of the fuel tank body 1 and the inner wall of the outer metal shell with the maximum area.

[0025] Then, phase change material 3 is injected into the interlayer space 2. In this embodiment, the phase change material 3 is a paraffin-based composite phase change material with a phase change temperature of 48℃±2℃, which matches the lower limit of the operating temperature required by the hydraulic system (approximately 45℃). During the injection process, several pieces of closed-cell rubber foam (with good oil resistance and temperature resistance) serving as elastic buffer material 5 are pre-placed at intervals around the perimeter and corners of the interlayer space 2. These foams are compressed when the phase change material 3 expands due to heat and rebound when the phase change material 3 cools and contracts, thereby effectively absorbing the volume change stress generated during its phase change process and preventing the formation of cavities that affect heat conduction.

[0026] Finally, on the outermost layer of the entire device, a flame-retardant insulation layer 6 (using polyurethane foam material in this embodiment) with a thickness of about 20 mm is tightly wrapped and bonded to the outer surface of the metal shell using a high-temperature resistant adhesive, thereby forming a complete oil storage device with high-efficiency insulation performance.

[0027] The working principle of this invention is as follows: When the hydraulic system of the laser cutting machine is working, the residual heat generated raises the temperature of the hydraulic oil. The heat is conducted through the wall of the oil tank body 1 to the phase change material 3 in the interlayer, causing it to absorb heat and melt from a solid to a liquid state, storing the thermal energy. When the equipment stops or the ambient temperature drops suddenly, causing the oil temperature to drop, once the temperature drops to near the phase change point, the liquid phase change material 3 begins to solidify, releasing the stored latent heat. This heat is quickly and evenly transferred to the entire outer wall of the oil tank body 1 through the tightly fitted metal heat-conducting skeleton 4, compensating for the heating of the internal hydraulic oil. Combined with the heat insulation effect of the outer insulation layer 6, this ensures that the hydraulic oil temperature is maintained within the normal working range, effectively preventing it from solidifying.

[0028] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An oil storage device for a hydraulic lifting platform of a laser cutting machine, characterized in that: It includes an oil tank body (1), which has a cavity for storing hydraulic oil inside, a flange (1.1) on the top, an oil drain port (1.2) at the bottom, and also includes a sandwich space (2), a phase change material (3), a metal heat-conducting skeleton (4), and a heat insulation layer (6). The interlayer space (2) is located on the outer side of the side wall and bottom of the tank body (1), forming a closed cavity; The phase change material (3) is filled in the interlayer space (2), and its phase change temperature matches the normal operating temperature range of the hydraulic oil. The metal heat-conducting skeleton (4) is disposed in the interlayer space (2) and is tightly fitted to the outer wall of the oil tank body (1); The insulation layer (6) covers the outside of the interlayer space (2).

2. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 1, characterized in that: The interlayer space (2) is formed by welding a metal shell to the outer wall of the tank body (1).

3. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 1 or 2, characterized in that: The metal heat-conducting skeleton (4) has a mesh structure with uniformly distributed circular holes.

4. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 3, characterized in that: The metal heat-conducting frame (4) is made of aluminum and is fixed in the interlayer space (2) by welding.

5. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 1, characterized in that: It also includes an elastic buffer material (5), which is disposed in the interlayer space (2) to buffer the volume change stress generated during the phase change of the phase change material (3).

6. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 5, characterized in that: The elastic cushioning material (5) is closed-cell rubber foam.

7. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 1, characterized in that: The insulation layer (6) is made of polyurethane foam material and is fixed by adhesive bonding.

8. The oil storage device for a hydraulic lifting platform of a laser cutting machine according to claim 1, characterized in that: The main body of the fuel tank (1) is made of high-strength carbon steel.

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