阅读说明：本技术 一种推土机发电装置及推土机发电装置的控制方法 (Bulldozer power generation device and control method thereof ) 是由 李东浪 杨和平 孟柚仓 张媛媛 李丹 侯盛鑫 于 2021-09-26 设计创作，主要内容包括：本发明涉及工程机械技术领域,尤其涉及一种推土机发电装置以及推土机发电装置的控制方法,推土机发电装置设置在推土机上,推土机具有分动箱,分动箱用于分配动力,推土机发电装置包括储油箱、供油泵、液压马达、控制阀、发电机和控制器,供油泵传动连接于分动箱,且输入端连通于储油箱,输出端连通于液压马达,液压马达连通至储油箱形成循环油路；控制阀设置于供油泵与液压马达之间的油路上,控制阀连接于储油箱；发电机传动连接于液压马达的输出端,用于为推土机上的蓄电池和/或用电元件供电；控制阀、液压马达和蓄电池均电连接于控制器。本发明的推土机发电装置不受发动机安装位置限制,节省了推土机功率,降低推土机的燃油消耗。(The invention relates to the technical field of engineering machinery, in particular to a bulldozer power generation device and a control method of the bulldozer power generation device, wherein the bulldozer power generation device is arranged on a bulldozer, the bulldozer is provided with a transfer case, the transfer case is used for distributing power, the bulldozer power generation device comprises an oil storage tank, an oil supply pump, a hydraulic motor, a control valve, a generator and a controller, the oil supply pump is connected to the transfer case in a transmission manner, the input end of the oil supply pump is communicated with the oil storage tank, the output end of the oil supply pump is communicated with the hydraulic motor, and the hydraulic motor is communicated with the oil storage tank to form a circulating oil path; the control valve is arranged on an oil path between the oil supply pump and the hydraulic motor and is connected with the oil storage tank; the generator is connected with the output end of the hydraulic motor in a transmission way and is used for supplying power to a storage battery and/or an electric element on the bulldozer; the control valve, the hydraulic motor and the storage battery are electrically connected to the controller. The power generation device of the bulldozer is not limited by the installation position of the engine, so that the power of the bulldozer is saved, and the fuel consumption of the bulldozer is reduced.)

1. A power plant for a bulldozer, provided on the bulldozer, said bulldozer having a transfer case for distributing power, comprising:

an oil storage tank;

the oil supply pump is connected to the transfer case in a transmission mode, the input end of the oil supply pump is communicated with the oil storage tank, the output end of the oil supply pump is communicated with the hydraulic motor, and the hydraulic motor is communicated with the oil storage tank to form a circulating oil path;

the control valve is arranged on an oil path between the oil supply pump and the hydraulic motor and communicated with the oil storage tank;

the generator is in transmission connection with the output end of the hydraulic motor and is used for supplying power to a storage battery and/or an electric element on the bulldozer;

and the control valve, the hydraulic motor, the storage battery and the electric element are electrically connected with the controller.

2. The bulldozer power generation apparatus defined in claim 1, wherein said fuel supply pump is provided with a splined shaft, said splined shaft being drivingly connected to said transfer case.

3. The power generation device of a bulldozer according to claim 1, in which a proportional relief valve is provided on said hydraulic motor, said proportional relief valve being electrically connected to said controller.

4. The power generation device of a bulldozer according to claim 1, characterised in that the output of said hydraulic motor is provided with a driving gear, and said generator is provided with a driven gear, said driving gear being drivingly connected to said driven gear.

5. The power generation device of a bulldozer according to claim 4, wherein said drive gear is in meshing engagement with said driven gear.

6. The power generation device of a bulldozer according to claim 4, further comprising a belt, said belt being fitted over said drive gear and said driven gear.

7. A control method of a bulldozer power generation apparatus, using the bulldozer power generation apparatus defined in any one of claims 1 through 6, comprising:

the start the fuel feed pump opens the control valve, the fuel feed pump is followed the oil storage tank oil absorption and with fluid carry extremely hydraulic motor, the hydraulic motor rotation drives the generator electricity generation, the generator gives on the bull-dozer the battery and/or power consumption component supplies power, the controller detects the electric quantity of battery with power consumption component's power consumption.

8. The control method for a bulldozer power generation plant according to claim 7, characterised in that a proportional relief valve is provided on said hydraulic motor, said proportional relief valve being electrically connected to said controller, said controller being capable of controlling said proportional relief valve in accordance with the power consumption of said power consumption element, thereby adjusting the speed of said hydraulic motor.

9. The control method for a bulldozer power generation apparatus according to claim 8, in which said controller, upon detecting that said battery is fully charged, sends commands to said control valve and said proportional relief valve, respectively, so that said control valve and said proportional relief valve are closed, the oil in said control valve and said hydraulic motor flows back to said oil storage tank, and said feed pump, said hydraulic motor and said generator are stopped.

10. The method of claim 9, wherein said storage battery supplies power to said power consuming element, and said controller starts said fuel supply pump and opens said control valve to restart said bulldozer power generation device when said controller detects that the amount of power in said storage battery is lower than a set value.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a bulldozer power generation device and a control method of the bulldozer power generation device.

Background

The engine of the existing bulldozer is arranged at the front part of the engine, the engine of the existing bulldozer is arranged at the front part of the complete bulldozer, the engine cannot be randomly arranged, the generator is directly in transmission connection with the output shaft of the engine to convert mechanical energy into electric energy, the generator can generate electricity all the time when the bulldozer works, and meanwhile, the power of the engine is consumed all the time, and the power of the engine is wasted.

When the bulldozer under the coastal working condition is used for filling the sea and building an island, the front part of the bulldozer basically soaks in seawater for working, the seawater corrodes the generator, so that the fault rate of the generator is very high, the generator needs to be replaced in 15 days of basic working, the maintenance cost and the use cost are high, and the construction is influenced by the fault shutdown of the bulldozer generator when the island is filled in the sea, so that the construction is interrupted, and the greater economic loss is caused.

Disclosure of Invention

The invention aims to provide a bulldozer power generation device and a control method of the bulldozer power generation device, wherein a generator is not limited by the installation position of an engine, meanwhile, the power of the bulldozer is saved through feedback control of a controller, and the fuel consumption of the bulldozer is reduced. In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the present invention provides a power generation device for a bulldozer, which is provided on the bulldozer, the bulldozer having a transfer case for distributing power, comprising:

an oil storage tank;

the oil supply pump is connected to the transfer case in a transmission mode, the input end of the oil supply pump is communicated with the oil storage tank, the output end of the oil supply pump is communicated with the hydraulic motor, and the hydraulic motor is communicated with the oil storage tank to form a circulating oil path;

the control valve is arranged on an oil path between the oil supply pump and the hydraulic motor, and is connected to the oil storage tank;

the generator is in transmission connection with the output end of the hydraulic motor and is used for supplying power to a storage battery and/or an electric element on the bulldozer;

and the control valve, the hydraulic motor, the storage battery and the electric element are electrically connected with the controller.

Preferably, the fuel feed pump is provided with a spline shaft, and the spline shaft is in transmission connection with the transfer case.

Preferably, the hydraulic motor is provided with a proportional overflow valve, and the proportional overflow valve is electrically connected to the controller.

Preferably, the output end of the hydraulic motor is provided with a driving gear, the generator is provided with a driven gear, and the driving gear is in transmission connection with the driven gear.

Preferably, the driving gear is engaged with the driven gear.

Preferably, the gear box further comprises a belt, and the belt is sleeved on the driving gear and the driven gear.

In another aspect, the present invention provides a method for controlling a bulldozer power generation device, the method including:

the start the fuel feed pump opens the control valve, the fuel feed pump is followed the oil storage tank oil absorption and with fluid carry extremely hydraulic motor, the hydraulic motor rotation drives the generator electricity generation, the generator gives on the bull-dozer the battery and/or power consumption component supplies power, the controller detects the electric quantity of battery with power consumption component's power consumption.

Preferably, the hydraulic motor is provided with a proportional overflow valve, the proportional overflow valve is electrically connected to the controller, and the controller can control the proportional overflow valve according to the power consumption of the power consumption element, so as to adjust the rotating speed of the hydraulic motor.

Preferably, when the controller detects that the storage battery is saturated, the controller sends commands to the control valve and the proportional relief valve respectively to close the control valve and the proportional relief valve, so that the oil in the control valve and the hydraulic motor flows back to the oil storage tank, and the oil supply pump, the hydraulic motor and the generator stop working.

Preferably, the storage battery supplies power to the power consumption element, and the controller starts the oil supply pump and opens the control valve to restart the bulldozer power generation device when detecting that the electric quantity of the storage battery is lower than a set value.

The invention has the beneficial effects that: compared with the power generator of the power generation device of the bulldozer in the prior art, which is directly connected with the output shaft of the engine in a transmission way to convert mechanical energy into electric energy, the power generation device of the bulldozer drives the oil supply pump through the transfer case, the oil supply pump supplies oil to the hydraulic motor, so that the hydraulic motor drives the power generator to supply power, the power generator is not required to be arranged near the output shaft of the engine (the front part of the complete machine of the bulldozer), the power generator can be arranged at any position on the bulldozer together with the hydraulic motor according to actual requirements without being limited by the installation position of the engine, meanwhile, the electric quantity of the storage battery can be detected according to the controller, and the storage battery is timely disconnected for power generation when full, so that compared with a bulldozer power generation device in the prior art, the power of the bulldozer is saved by supplying power to the storage battery only through starting an engine, the fuel consumption of the bulldozer is reduced, and the service lives of the generator and the storage battery can be prolonged.

Drawings

FIG. 1 is a schematic view showing the connection structure of the components of a bulldozer power generation device.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the present embodiment provides a power generation device for a bulldozer, which is disposed on the bulldozer, the bulldozer having a transfer case for distributing power, the power generation device for the bulldozer including an oil storage tank, an oil supply pump, a hydraulic motor, a control valve, a generator and a controller, wherein the oil supply pump is connected to the transfer case in a transmission manner, an input end of the oil supply pump is communicated with the oil storage tank, an output end of the oil supply pump is communicated with the hydraulic motor, and the hydraulic motor is communicated with the oil storage tank to form a circulation oil path; the control valve is arranged on an oil path between the oil supply pump and the hydraulic motor and communicated with the oil storage tank; the generator is connected with the output end of the hydraulic motor in a transmission way and is used for supplying power to a storage battery and/or an electric element on the bulldozer; the control valve, the hydraulic motor and the storage battery are electrically connected to the controller, and further, the oil supply pump can be electrically controlled to be started or closed by the controller or manually operated by a driver.

Compared with the power generator of the bulldozer in the prior art, which is directly connected with the output shaft of the engine in a transmission way to convert mechanical energy into electric energy, the power generator of the bulldozer provided by the embodiment drives the oil supply pump through the transfer case, the oil supply pump supplies oil to the hydraulic motor through the oil supply pipeline so that the hydraulic motor drives the power generator to supply power, the power generator is not required to be arranged near the output shaft of the engine (the front part of the complete bulldozer), the power generator can be arranged at any position on the bulldozer together with the hydraulic motor according to actual needs and is not limited by the installation position of the engine of the bulldozer, meanwhile, the power of the storage battery can be detected according to the controller, and the power generation can be cut off in time when the storage battery is full, compared with the power generator of the bulldozer in the prior art, the power generator can supply power to the storage battery only when the engine is started, the power of the bulldozer is saved, and the fuel consumption of the bulldozer is reduced, and the service life of the generator and the storage battery can be prolonged.

Specifically, be provided with the integral key shaft on the fuel feed pump, the integral key shaft transmission is connected in the transfer case, and the integral key shaft can provide certain transmission distance and the transmission is firm.

Specifically, be provided with the proportional overflow valve on the hydraulic motor, the proportional overflow valve electricity is connected in the controller, and the concrete effect of proportional overflow valve does: the controller detects the power consumption of the electric element and transmits an instruction signal to the proportional overflow valve through internal calculation, so that the rotating speed of the hydraulic motor can be adjusted in real time, the power consumption of the transfer case is reduced while the generated energy is met, and the fuel consumption of the bulldozer is reduced.

Specifically, the output end of the hydraulic motor is provided with a driving gear, the generator is provided with a driven gear, the driving gear is in transmission connection with the driven gear, further, the driving gear and the driven gear are in direct meshing connection for transmission, the gear transmission is accurate in transmission, and the transmission ratio is kept unchanged; the transmission power and speed range is large, and the transmission efficiency is high; compact structure, long service life, continuous transmission guarantee and the like.

Further, as a preferable scheme of the embodiment, the driving gear and the driven gear use a belt transmission, and the belt transmission is sleeved on the driving gear and the driven gear, and the belt transmission has the following advantages: the belt transmission can be used for transmission with larger distance between the centers of two shafts, the installation distance between the generator and the hydraulic motor is prolonged, and the belt has elasticity, can alleviate impact and vibration loads, runs stably and has no noise; when the belt is overloaded, the belt slips on the wheel, so that the parts can be prevented from being damaged; simple structure, low equipment cost and convenient maintenance.

The embodiment also provides a control method of the bulldozer power generation device, and the bulldozer power generation device comprises a fuel supply pump, a control valve is opened, the fuel supply pump sucks oil from the oil storage tank and conveys the oil to the hydraulic motor, the hydraulic motor rotates to drive the generator to generate electricity, the generator supplies electricity to a storage battery and/or an electricity utilization element on the bulldozer, the controller detects the electricity quantity of the storage battery and the electricity consumption of the electricity utilization element, and the fuel supply pump and the control valve can be started by sending an instruction after the signal of the storage battery detected by the controller is converted, or can be started manually by a driver.

Furthermore, the hydraulic motor is provided with a proportional overflow valve which is electrically connected with the controller, and the controller can control the proportional overflow valve according to the power consumption of the electric element, so that the rotating speed of the hydraulic motor is adjusted, the power consumption of the transfer case is saved, and the fuel consumption of the bulldozer is reduced.

Furthermore, when the controller detects that the storage battery is saturated, the controller respectively sends instructions to the control valve and the proportional overflow valve, so that the control valve and the proportional overflow valve are closed, oil in the control valve and the hydraulic motor flows back to the oil storage tank, the oil supply pump, the hydraulic motor and the generator stop working, and at the moment, the power consumption of the transfer case is reduced because the power is supplied by the storage battery by the electric elements.

Furthermore, the storage battery supplies power to the electric element, when the controller detects that the electric quantity of the storage battery is lower than a set value, the oil supply pump is started, the control valve is opened to restart the power generation device of the bulldozer, in the embodiment, the oil supply pump and the control valve are automatically controlled to be started by the controller, in other embodiments, a sound playing unit or a warning lamp is arranged to inform a driver of manually starting the oil supply pump and the control valve when the electric quantity is lower than the set value, further, the set value of the electric quantity of the storage battery can be set to be 10% -50% of full electric quantity according to different electric capacities of the storage battery, and as a preferable scheme of the embodiment, the set value of the electric quantity is set to be 20% of full electric quantity of the storage battery.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.