Forklift gravity power generation system

Abstract

The utility model relates to the technical field of power generation systems, and particularly discloses a forklift gravity power generation system which comprises a driving module and a power generation module, a lifting portal is arranged on a forklift body in a lifting mode through a lifting oil cylinder, and the driving module comprises a hydraulic power unit, an electromagnetic reversing valve and an oil tank. The hydraulic power unit conveys pressure oil into the lifting oil cylinder through the electromagnetic reversing valve, the lifting oil cylinder is used for driving the lifting portal to ascend, the power generation module comprises a generator, the generator is located between the electromagnetic reversing valve and the oil tank, an oil inlet of the generator is communicated with an oil return opening of the electromagnetic reversing valve, and when the lifting portal descends, the oil return opening of the electromagnetic reversing valve is communicated with the oil tank. The hydraulic oil in the lifting oil cylinder is transmitted into the power generator through the electromagnetic directional valve, under the action of gravity, the pressure oil has high pressure and can drive the power generator to generate power, gravitational potential energy is converted into electric energy, the purpose of reducing energy consumption is achieved, and the cruising ability of the forklift can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation systems, in particular to a forklift gravity power generation system. Background Art

[0002] The forklift mast is an important component of the forklift. It is usually installed on the forklift body in a liftable manner. Its ascent generates pressurized oil through the hydraulic motor, which is then passed into the lifting cylinder. The lifting cylinder drives the forklift mast to rise. When the forklift mast descends, the hydraulic oil in the lifting cylinder is discharged into the oil tank. However, in this process, due to the large gravity between the forklift mast and the cargo on the mast, the hydraulic oil directly returning to the oil tank will cause a large loss of gravitational potential energy. Summary of the invention

[0003] The present invention is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a forklift gravity power generation system, which can convert the gravitational potential energy of the forklift mast into electrical energy to the greatest extent, reduce energy consumption, and improve the endurance of the forklift.

[0004] To achieve the above object, the utility model provides a forklift gravity power generation system, the forklift comprises a forklift body, a lifting mast and a lifting cylinder, the lifting mast is arranged on the forklift body in a manner that it can be raised and lowered by the lifting cylinder, and the gravity power generation system comprises:

[0005] A driving module, comprising a hydraulic power unit, an electromagnetic reversing valve and an oil tank, wherein the hydraulic power unit is connected to the lifting cylinder through the electromagnetic reversing valve, and an oil return port of the electromagnetic reversing valve is connected to an oil inlet of the oil tank;

[0006] The power generation module comprises a generator, wherein the generator is located between the electromagnetic reversing valve and the oil tank, the oil inlet of the generator is connected to the oil return port of the electromagnetic reversing valve, and the oil outlet of the generator is connected to the oil inlet of the oil tank.

[0007] According to the forklift gravity power generation system described above, the hydraulic power unit is configured as a hydraulic motor, the oil inlet of the hydraulic motor is connected to the oil outlet of the oil tank, and the oil outlet of the hydraulic motor is connected to the electromagnetic reversing valve.

[0008] According to the forklift gravity power generation system described above, the solenoid reversing valve has a first oil inlet, a first oil outlet, a second oil inlet and an oil return port, the first oil inlet is connected to the first oil outlet, the second oil inlet is connected to the oil return port, the first oil inlet is connected to the oil outlet of the hydraulic motor, the first oil outlet is connected to the oil inlet of the lifting cylinder, and the second oil inlet is connected to the oil outlet of the lifting cylinder.

[0009] The forklift gravity power generation system described above further includes a control module, wherein the control module includes a control unit, and the control unit is connected to the hydraulic power unit and is used to control the hydraulic power unit to be turned on and off.

[0010] According to the forklift gravity power generation system described above, the control module also includes a pressure sensor, which is located in the lifting cylinder and electrically connected to the control unit. The pressure sensor is used to receive the oil pressure signal in the lifting cylinder and feed it back to the control unit.

[0011] According to the forklift gravity power generation system described above, the control unit is electrically connected to the generator and is used to adjust the power generation level of the generator.

[0012] The forklift gravity power generation system described above further includes a power supply module, the power supply module includes a battery pack, and the battery pack is electrically connected to the control unit.

[0013] The utility model has the following beneficial effects:

[0014] 1. When the forklift mast is lowering, the lifting cylinder returns oil through the electromagnetic reversing valve. The pressure oil first passes through the generator and then returns to the oil tank. Due to the existence of gravity, the pressure oil is squeezed to make it pressurized. When it passes through the generator, it can drive the generator to generate electricity, that is, converting gravitational potential energy into electrical energy, which can effectively save the forklift's energy consumption and improve its endurance.

[0015] 2. A pressure sensor is provided on the lifting cylinder. The control unit can control the generator to adjust its power generation level according to the actual pressure value, so as to recover the gravitational potential energy to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0017] In the figure:

[0018] 1. Drive module; 11. Hydraulic motor; 12. Solenoid reversing valve; 13. Oil tank;

[0019] 2. Power generation module; 21. Generator;

[0020] 3. Control module; 31. Control unit; 32. Pressure sensor;

[0021] 4. Power supply module; 41. Battery pack. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 As shown, a forklift gravity power generation system includes a driving module 1, a power generation module 2, a control module 3 and a power supply module 4.

[0024] Specifically, the forklift includes a forklift body, a lifting gantry and a lifting cylinder. The lifting gantry is arranged on the forklift body and can be raised and lowered by the lifting cylinder. The driving module 1 includes a hydraulic power unit, an electromagnetic reversing valve 12 and an oil tank 13. The hydraulic power unit is connected to the lifting cylinder through the electromagnetic reversing valve 12. The return oil port of the electromagnetic reversing valve 12 is connected to the oil inlet of the oil tank 13. After the hydraulic power unit produces the pressure oil, the pressure oil is transported to the lifting cylinder through the electromagnetic reversing valve 12, and the lifting cylinder is used to drive the lifting gantry to rise. The power generation module 2 includes The generator 21 is located between the electromagnetic reversing valve 12 and the oil tank 13. The oil inlet of the generator 21 is connected to the oil return port of the electromagnetic reversing valve 12, and the oil outlet of the generator 21 is connected to the oil inlet of the oil tank 13. When the lifting gantry is lowered, the hydraulic oil in the lifting cylinder is transmitted to the generator 21 through the electromagnetic reversing valve 12. Due to the action of gravity, the pressure oil has a higher pressure, which will drive the generator 21 to generate electricity, and then convert the gravitational potential energy into electrical energy, so as to achieve the purpose of reducing energy consumption and effectively improve the endurance of the forklift.

[0025] Specifically, the hydraulic power unit is set as a hydraulic motor 11, the oil inlet of the hydraulic motor 11 is connected to the oil outlet of the oil tank 13, the oil outlet of the hydraulic motor 11 is connected to the electromagnetic reversing valve 12, the hydraulic motor 11 draws hydraulic oil from the oil tank 13 and pressurizes it through the hydraulic motor 11, and the pressurized pressure oil is passed into the electromagnetic reversing valve 12.

[0026] Specifically, the electromagnetic reversing valve 12 has a first oil inlet, a first oil outlet, a second oil inlet and an oil return port. The first oil inlet is connected to the first oil outlet, the second oil inlet is connected to the oil return port, the first oil inlet is connected to the oil outlet of the hydraulic motor 11, the first oil outlet is connected to the oil inlet of the lifting cylinder, and the second oil inlet is connected to the oil outlet of the lifting cylinder. The electromagnetic reversing valve 12 can achieve reversal through an electromagnet so that only one channel is connected, which is convenient for controlling the flow direction of the oil.

[0027] In order to realize the control of the hydraulic power unit, the control module 3 includes a control unit 31, which is connected to the hydraulic power unit and is used to control the opening and closing of the hydraulic power unit.

[0028] In order to adjust the power generation level of the generator 21 according to the real-time pressure value, the control module 3 also includes a pressure sensor 32. The pressure sensor 32 is located in the lifting cylinder and is electrically connected to the control unit 31. The pressure sensor 32 is used to receive the oil pressure signal in the lifting cylinder and feed it back to the control unit 31, that is, to obtain the oil pressure value in the lifting cylinder. The control unit 31 is electrically connected to the generator 21 and can adjust the power generation level of the generator 21 according to the actual oil pressure value, so that its power generation efficiency is adapted to the oil pressure value and the gravitational potential energy is utilized to the greatest extent.

[0029] In order to ensure the power supply of the control unit 31 , the power supply module 4 includes a battery pack 41 . The battery pack 41 is electrically connected to the control unit 31 for supplying power to the control unit 31 .

[0030] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A forklift gravity power generation system, the forklift comprising a forklift body, a lifting mast and a lifting cylinder, the lifting mast being arranged on the forklift body in a manner that it can be raised and lowered by the lifting cylinder, characterized in that: The gravity power generation system comprises: A driving module, comprising a hydraulic power unit, an electromagnetic reversing valve and an oil tank, wherein the hydraulic power unit is connected to the lifting cylinder through the electromagnetic reversing valve, and an oil return port of the electromagnetic reversing valve is connected to an oil inlet of the oil tank; The power generation module comprises a generator, wherein the generator is located between the electromagnetic reversing valve and the oil tank, the oil inlet of the generator is connected to the oil return port of the electromagnetic reversing valve, and the oil outlet of the generator is connected to the oil inlet of the oil tank.

2. A forklift gravity power generation system according to claim 1, characterized in that: The hydraulic power unit is configured as a hydraulic motor, an oil inlet of the hydraulic motor is communicated with an oil outlet of the oil tank, and an oil outlet of the hydraulic motor is communicated with the electromagnetic reversing valve.

3. A forklift gravity power generation system according to claim 2, characterized in that: The solenoid reversing valve has a first oil inlet, a first oil outlet, a second oil inlet and an oil return port. The first oil inlet is connected to the first oil outlet, the second oil inlet is connected to the oil return port, the first oil inlet is connected to the oil outlet of the hydraulic motor, the first oil outlet is connected to the oil inlet of the lifting cylinder, and the second oil inlet is connected to the oil outlet of the lifting cylinder.

4. A forklift gravity power generation system according to claim 1, characterized in that: It also includes a control module, which includes a control unit. The control unit is connected to the hydraulic power unit and is used to control the hydraulic power unit to be turned on and off.

5. A forklift gravity power generation system according to claim 4, characterized in that: The control module also includes a pressure sensor, which is located in the lifting cylinder and is electrically connected to the control unit. The pressure sensor is used to receive the oil pressure signal in the lifting cylinder and feed it back to the control unit.

6. A forklift gravity power generation system according to claim 5, characterized in that: The control unit is electrically connected to the generator and is used to adjust the power generation level of the generator.

7. A forklift gravity power generation system according to claim 4, characterized in that: It also includes a power supply module, which includes a battery pack, and the battery pack is electrically connected to the control unit.

Images