Heat dissipation structure for hydraulic oil tank of forklift

Abstract

The utility model discloses a heat dissipation structure for a hydraulic oil tank of a forklift. The heat dissipation structure comprises the hydraulic oil tank, a radiator, a water pump and a heat dissipation pipe. The heat dissipation pipe is arranged in the hydraulic oil tank so as to exchange heat with oil; the water outlet of the radiator is communicated with the water inlet of the radiating pipe through a first water conveying pipe, the water inlet of the radiator is communicated with the water outlet of the radiator through a second water conveying pipe, and the water pump is arranged on the second water conveying pipe to maintain circulating flow of cooling water. Hydraulic oil is cooled in a water-cooling heat dissipation mode, the heat dissipation effect can be effectively improved, and therefore the reliability and stability of the forklift hydraulic system are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery and industrial vehicles, in particular to a heat dissipation structure for a forklift hydraulic oil tank. Background Art

[0002] In the hydraulic system of a forklift, the temperature of the hydraulic oil will rise with the operation of the forklift. The increase in the temperature of the hydraulic oil will cause the performance of the hydraulic oil to decline, resulting in increased wear between the components in the hydraulic system, poor operation of the hydraulic system, and even damage to the hydraulic system.

[0003] To solve the above problems, in the prior art, methods such as air cooling and applying heat dissipation silicone grease on the surface of the hydraulic oil tank are used to cool the hydraulic oil in the hydraulic oil tank, and good heat dissipation effects can be obtained.

[0004] Although the above heat dissipation methods can achieve good heat dissipation effects, in actual operations, in the face of complex construction environments, such as extremely high-temperature environments, the above heat dissipation methods cannot meet the cooling requirements. Therefore, the existing heat dissipation methods need to be improved and strengthened to ensure the reliability and stability of the forklift hydraulic system. Summary of the Invention

[0005] In view of this, the utility model provides a heat dissipation structure for a forklift hydraulic oil tank, which uses a water cooling method to cool the hydraulic oil, and can effectively ensure the reliability and stability of the hydraulic system.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A heat dissipation structure for a forklift hydraulic oil tank includes:

[0008] A hydraulic oil tank, a radiator, a water pump, and a heat dissipation pipe;

[0009] The heat dissipation pipe is arranged inside the hydraulic oil tank to exchange heat with the oil.

[0010] The water outlet of the radiator is connected to the water inlet of the heat dissipation pipe through a first water pipe, and the water inlet of the radiator is connected to the water outlet of the radiator through a second water pipe. The water pump is arranged on the second water pipe to maintain the circulating flow of the cooling water.

[0011] Preferably, the installation height of the heat dissipation pipe is not higher than the lowest oil level of the hydraulic oil tank.

[0012] Preferably, an inlet port and an outlet port are arranged on the side wall of the hydraulic oil tank. One side of the inlet port is connected to the water inlet of the heat dissipation pipe, and the other side is connected to the first water pipe. One side of the outlet port is connected to the water outlet of the heat dissipation pipe, and the other side is connected to the second water pipe.

[0013] Preferably, the forklift hydraulic oil tank heat dissipation structure further includes: a controller and a temperature sensor; the temperature sensor is arranged inside the hydraulic oil tank to monitor the temperature of the hydraulic oil in real time; the temperature sensor, the motor of the water pump, and the cooling fan of the radiator are all signal-connected to the controller, and the controller controls the rotation speed of the motor of the water pump and the rotation speed of the cooling fan of the radiator according to the temperature signal fed back by the temperature sensor, so as to achieve precise control of the temperature of the hydraulic oil.

[0014] Preferably, the temperature sensor is installed at the lower end of the fuel filler cap for easy inspection and replacement of the temperature sensor.

[0015] Preferably, the heat dissipation pipe is made of a metal material with high thermal conductivity.

[0016] Compared with the prior art, a forklift hydraulic oil tank heat dissipation structure disclosed in the present application uses a water-cooling heat dissipation method to cool the hydraulic oil, which can effectively improve the heat dissipation effect, thereby ensuring the reliability and stability of the forklift hydraulic system.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the forklift hydraulic oil tank heat dissipation structure disclosed in the embodiment of the present application;

[0019] Figure 2 is a front view of the forklift hydraulic oil tank heat dissipation structure disclosed in the embodiment of the present application;

[0020] Figure 3 is a partial cross-sectional view of the forklift hydraulic oil tank heat dissipation structure disclosed in the embodiment of the present application.

[0021] Reference Signs:

[0022] 100, forklift hydraulic oil tank heat dissipation structure;

[0023] 1, hydraulic oil tank; 11, water inlet port; 12, water outlet port;

[0024] 2, radiator; 3, water pump; 4, heat dissipation pipe; 5, first water pipe; 6, second water pipe; 7, temperature sensor; 8, fuel filler cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model discloses a forklift hydraulic oil tank heat dissipation structure 100, which uses a water-cooling heat dissipation method to cool the hydraulic oil, and can effectively ensure the reliability and stability of the hydraulic system.

[0026] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0027] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0028] Reference will be made below to Figures 1 - 3 describe the forklift hydraulic oil tank heat dissipation structure 100 in the embodiments of the present utility model.

[0029] As Figure 1 and Figure 2 shown, a forklift hydraulic oil tank heat dissipation structure 100 is disclosed in the embodiments of the present application, including: a hydraulic oil tank 1, a water-cooled radiator 2, a water pump 3, and a heat dissipation pipe 4.

[0030] Among them, the heat dissipation pipe 4 is arranged inside the hydraulic oil tank 1 to exchange heat with the oil.

[0031] By arranging the heat dissipation pipe 4 inside the hydraulic oil tank 1, not only can the heat dissipation pipe 4 be in direct contact with the hydraulic oil, increasing the heat dissipation area and effect, but also compared with the prior art, the present application can directly dissipate heat inside the hydraulic oil, thereby achieving a better cooling effect to ensure the reliability and stability of the hydraulic system.

[0032] In some embodiments, the water outlet of the radiator 2 and the water inlet of the heat dissipation pipe 4 are connected by a first water pipe 5, and the water inlet and the water outlet of the radiator 2 are connected by a second water pipe 6. The water pump 3 is arranged on the second water pipe 6 to maintain the circulating flow of the cooling water.

[0033] The operation mode of the heat dissipation structure in the above embodiments is as follows: The cooling water circulates in the radiator 2, the first water pipe 5, the heat dissipation pipe 4 and the second water pipe 6 under the push of the water pump 3; The high-temperature cooling water that has exchanged heat with the hydraulic oil in the heat dissipation pipe 4 flows into the second water pipe 6 through the water outlet of the heat dissipation pipe 4, and is pumped into the radiator 2 by the water pump 3. After the high-temperature cooling water is cooled in the radiator 2, it flows out from the water outlet of the radiator 2, enters the first water pipe 5, and re-enters the heat dissipation pipe 4 through the water inlet of the heat dissipation pipe 4 to exchange heat with the hydraulic oil again, so as to continuously cool the hydraulic oil.

[0034] By establishing a circulation path for the cooling water, the cooling water can circulate and continuously exchange heat with the hydraulic oil to ensure that the temperature of the hydraulic oil can be maintained within a reasonable range, thereby ensuring the reliability and stability of the hydraulic system.

[0035] In some embodiments, a plurality of heat dissipation pipes 4 can be provided. The design of the plurality of heat dissipation pipes 4 can effectively increase the heat dissipation area, thereby enhancing the heat dissipation effect. The number of heat dissipation pipes 4 can be determined according to the actual heat dissipation requirements.

[0036] In some embodiments, the shape of the heat dissipation pipe 4 can be a straight pipe, an S-shaped pipe, a return pipe, etc. It should be noted that as long as the shape can increase the heat dissipation area and heat dissipation effect, it can be applied to the heat dissipation pipe 4 in this embodiment, and is not limited to the above several shapes of the heat dissipation pipe 4.

[0037] In some embodiments, the installation height of the heat dissipation pipe 4 is not higher than the lowest oil level of the hydraulic oil tank 1. In the prior art, the hydraulic oil tank 1 of a forklift is designed with a lowest oil level to ensure the normal operation of the forklift hydraulic system. In this embodiment, by installing the heat dissipation pipe 4 below the lowest oil level in the hydraulic oil tank 1, it can be ensured that the heat dissipation pipe 4 is always inside the hydraulic oil, thereby maximizing the heat dissipation effect and avoiding heat dissipation waste.

[0038] In some embodiments, for example Figure 2 and Figure 3 As shown, an inlet port 11 and an outlet port 12 are provided on the side wall of the hydraulic oil tank 1. One side of the inlet port 11 is communicated with the water inlet of the heat dissipation pipe 4, and the other side is communicated with the first water pipe 5. One side of the outlet port 12 is communicated with the water outlet of the heat dissipation pipe 4, and the other side is communicated with the second water pipe 6.

[0039] By providing the inlet port 11 and the outlet port 12, it is not only convenient for the assembly of the heat dissipation pipe 4, the first water pipe 5 and the second water pipe 6, but also can play an auxiliary positioning role in the assembly of the heat dissipation pipe 4, the first water pipe 5 and the second water pipe 6, and can effectively ensure the concentricity between the pipe orifices, thereby reducing the flow resistance of the cooling water and further improving the heat dissipation efficiency.

[0040] In some embodiments, the forklift hydraulic oil tank heat dissipation structure 100 further includes: a controller and a temperature sensor 7; the temperature sensor 7 is disposed inside the hydraulic oil tank 1 to monitor the temperature of the hydraulic oil in real time; the temperature sensor 7, the motor of the water pump 3, and the cooling fan of the radiator 2 are all signal-connected to the controller, and the controller controls the rotation speed of the motor of the water pump 3 and the rotation speed of the cooling fan of the radiator 2 according to the temperature signal fed back by the temperature sensor 7 to achieve precise control of the temperature of the hydraulic oil.

[0041] By providing the controller and the temperature sensor 7, not only can the temperature of the hydraulic oil be grasped in real time, but also the controller can adjust the rotation speed of the motor of the water pump 3 and the rotation speed of the cooling fan of the radiator 2 in real time according to the temperature signal fed back by the temperature sensor 7 to achieve precise regulation of the temperature of the hydraulic oil.

[0042] For example, when the temperature of the hydraulic oil is relatively high, the controller can control the motor of the water pump 3 to rotate faster and the cooling fan of the radiator 2 to rotate faster to improve the heat dissipation efficiency; when the temperature of the hydraulic oil is relatively low, the controller can control the motor of the water pump 3 to rotate slower and the cooling fan of the radiator 2 to rotate slower to reduce energy consumption.

[0043] In this embodiment, for example Figure 1 As shown, the temperature sensor 7 is installed at the lower end of the fuel filler cap 8 for easy inspection and replacement of the temperature sensor 7.

[0044] In some embodiments, the heat dissipation pipe 4 is made of a metal material with high thermal conductivity, so that the heat exchange effect can be enhanced and the heat dissipation performance can be improved.

[0045] Preferably, the heat dissipation pipe 4 can be made of copper or aluminum alloy.

[0046] Other components and operations of the forklift hydraulic oil tank heat dissipation structure 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0047] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0048] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat dissipation structure for a hydraulic oil tank of a forklift, characterized in that: include: Hydraulic oil tank, radiator, water pump and radiator pipe; The heat dissipation pipe is arranged inside the hydraulic oil tank to exchange heat with the oil; The water outlet of the radiator and the water inlet of the heat dissipation pipe are connected through a first water pipe, and the water inlet of the radiator and the water outlet of the radiator are connected through a second water pipe. The water pump is arranged on the second water pipe to maintain the circulation of cooling water.

2. The heat dissipation structure of the forklift hydraulic oil tank according to claim 1, characterized in that: The installation height of the heat dissipation pipe is not higher than the lowest oil level of the hydraulic oil tank.

3. The heat dissipation structure of the hydraulic oil tank of a forklift according to claim 1, characterized in that: A water inlet port and a water outlet port are provided on the side wall of the hydraulic oil tank. One side of the water inlet port is connected to the water inlet of the radiator pipe, and the other side is connected to the first water pipe. One side of the water outlet port is connected to the water outlet of the radiator pipe, and the other side is connected to the second water pipe.

4. The heat dissipation structure of the hydraulic oil tank of a forklift according to claim 1, characterized in that: Also includes: Controller and temperature sensor; The temperature sensor is arranged inside the hydraulic oil tank to monitor the temperature of the hydraulic oil in real time; The temperature sensor, the motor of the water pump and the cooling fan of the radiator are all connected to the controller signal. The controller controls the motor speed of the water pump and the cooling fan of the radiator according to the temperature signal fed back by the temperature sensor to achieve precise control of the temperature of the hydraulic oil.

5. The heat dissipation structure of the hydraulic oil tank of a forklift according to claim 4, characterized in that: The temperature sensor is installed at the lower end of the fuel filler cap to facilitate the inspection and replacement of the temperature sensor.

6. The heat dissipation structure of the hydraulic oil tank of a forklift according to claim 1, characterized in that: The heat dissipation pipe is made of a metal material with high thermal conductivity.

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