Preheating system for cold start of high and cold rock drilling machine

Abstract

The utility model discloses a preheating system for cold start of a high-cold-region rock drilling machine which comprises an engine, an oil pan used for containing engine oil, a storage battery, an oil tank used for containing fuel oil, a fuel oil pipe, a first oil-water separator, a fuel oil coarse filter, a fuel oil fine filter and an air compressor. The air compressor comprises a second oil-water separator used for separating water in air compressor oil and an air compressor gas circuit pipeline, the preheating system comprises an oil burning heater and an electric heater, the oil burning heater is connected with the oil tank and heats the engine and the storage battery by burning fuel oil, the electric heater is electrically connected with the storage battery, and the electric heater is electrically connected with the air compressor gas circuit pipeline. And fuel oil, engine oil, air compressor oil and an air compressor gas circuit pipeline are heated through electric power from the storage battery. By means of the preheating system for cold start of the high and cold rock drilling machine, all parts of the drilling machine can reach the working temperature more quickly, start is easier, and the start time is greatly shortened.

Description

Technical Field

[0001] The present application relates to the technical field of construction machinery, and more specifically, to an alpine rock drill. Background Art

[0002] As a common mining machine, rock drills are widely used in China, especially in alpine regions such as Xinjiang, Inner Mongolia, and Tibet. In these regions, the temperature can generally drop to about -30°C to -40°C. At this time, the evaporation, combustion, and low-temperature fluidity of fuel are significantly reduced, and the viscosity of lubricating oil increases, resulting in an increase in the resistance between each friction pair, which reduces the starting speed of the engine and directly affects the starting performance of the diesel engine.

[0003] In the publicly disclosed patent CN107313887B, it is described that the coolant is heated by a fuel heater and then sent into the body of the diesel engine to heat the cylinder block of the diesel engine, so as to achieve the purpose of starting the diesel engine under low-temperature conditions. This solution only slightly alleviates the problem of difficult engine starting under low-temperature conditions. For a drill rig with an air compressor, in extremely cold working conditions, it is very likely that due to the excessive load of the engine, even if the cylinder block of the engine is heated, it may not be able to start the engine smoothly after multiple starts.

[0004] In addition, at low temperatures, the hydraulic oil becomes very thick, making it difficult for the pumps and motors of the driving equipment to form an effective lubricating oil film when the machine is cold, thus exacerbating wear. The thickening of the hydraulic oil also affects the return oil flow in the pump housing, resulting in an increase in the return oil pressure, which may damage the shaft head oil seal of the pump body and requires shutdown for repair, thereby affecting the construction progress.

[0005] Moreover, the viscosity of the air compressor oil increases significantly in extremely cold environments, resulting in poor fluidity. And after the machine is shut down in winter, due to the sudden drop in the outside temperature, a large amount of condensed water will be generated in the air circuit pipeline of the air compressor by air cooling. If these condensed waters remain in the air circuit pipeline, potential hazards such as pipeline blockage may occur.

[0006] In addition, the optimal working temperature of the battery is between 20°C and 40°C. As the ambient temperature decreases, the output capacity of the battery also decreases significantly. In extremely cold environments, the output capacity of the battery may be only about 40% of the rated output, which greatly reduces the power of the engine starting system and makes it difficult for the starting speed to reach the minimum speed required for starting. Summary of the Invention

[0007] The purpose of the present application is to overcome the defects in the prior art and provide an alpine rock drill with a dual heating system.

[0008] To achieve the above purpose, the technical solution provided by the present application is as follows:

[0009] A preheating system for cold start of a high-cold rock drill, the high-cold rock drill including an engine, an oil pan for containing engine oil, a hydraulic oil tank for containing hydraulic oil, a storage battery, a fuel tank for containing fuel, a fuel pipe, a first oil-water separator for separating moisture in the fuel, a fuel coarse filter, a fuel fine filter, and an air compressor, wherein the fuel tank, the first oil-water separator, the fuel coarse filter, and the fuel fine filter are interconnected by the fuel pipe, the oil pan is attached to the engine, the engine is connected to the air compressor and is connected to the fuel tank, the first oil-water separator, the fuel coarse filter, and the fuel fine filter through the fuel pipe, the air compressor includes a second oil-water separator for separating moisture in the air compressor oil and an air compressor air pipeline, and is characterized in that it includes: an oil-burning heater and an electric heater, wherein the oil-burning heater is connected to the fuel tank and heats the engine and the storage battery by burning the fuel, and the electric heater is electrically connected to the storage battery and heats the fuel, the engine oil, the air compressor oil, and the air compressor air pipeline by the electric power from the storage battery.

[0010] Further, the preheating system further includes a control system, the control system including an overall machine controller, and the overall machine controller is communicatively connected to the oil-burning heater and the electric heater to control the oil-burning heater and the electric heater.

[0011] Further, the storage battery is housed in a storage battery box, the oil-burning heater includes a storage battery box air heater, the storage battery box air heater is connected to the fuel tank and the storage battery box, and heats the storage battery by heating the air in the storage battery box by burning the fuel.

[0012] Further, the storage battery box includes a damper and a damper actuator, the control system includes a first temperature sensor located on the opposite side of the damper in the storage battery box, and the overall machine controller is communicatively connected to the storage battery box air heater and the damper actuator to control the damper actuator and the storage battery box air heater according to the temperature of the air sensed by the first temperature sensor.

[0013] Further, the oil-burning heater includes a cylinder jacket water heater, the cylinder jacket water heater is connected to the fuel tank and is in fluid communication with the engine water jacket of the engine for containing cylinder jacket water, and the cylinder jacket water heater heats the cylinder jacket water by burning the fuel.

[0014] Further, the control system includes a second temperature sensor located in the engine water jacket, and the whole machine controller is communicatively connected to the cylinder jacket water heater to control the cylinder jacket water heater according to the temperature of the cylinder jacket water sensed by the second temperature sensor.

[0015] Further, the electric heater includes a fuel heater arranged on the fuel tank, a heating element arranged in the fuel pipe, a first heating sheath arranged on the first oil-water separator, a second heating sheath arranged on the fuel coarse filter, and a third heating sheath arranged on the fuel fine filter. The fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath are electrically connected to the storage battery.

[0016] Further, the control system includes a third temperature sensor arranged at one of the fuel pipe, the first oil-water separator, the fuel coarse filter, and the fuel fine filter. The whole machine controller is communicatively connected to the fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath to control the fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath according to the temperature of the fuel sensed by the third temperature sensor.

[0017] Further, the electric heater includes an oil pan heater arranged in the oil pan and electrically connected to the storage battery.

[0018] Further, the control system includes a fourth temperature sensor arranged in the oil pan. The whole machine controller is communicatively connected to the oil pan heater to control the oil pan heater according to the temperature of the engine oil sensed by the fourth temperature sensor.

[0019] Further, the electric heater includes a fourth heating sheath arranged on the second oil-water separator and a heating tape arranged on the air compressor air pipeline. The fourth heating sheath and the heating tape are electrically connected to the storage battery.

[0020] Further, the control system includes a fifth temperature sensor arranged at the second oil-water separator and a sixth temperature sensor arranged on the heating tape. The whole machine controller is communicatively connected to the fourth heating sheath and the heating tape to control the fourth heating sheath according to the temperature of the air compressor oil sensed by the fifth temperature sensor, and to control the heating tape according to the temperature of the air around the heating tape sensed by the sixth temperature sensor.

[0021] In the above various embodiments, one or more heat dissipation pipes are arranged in the hydraulic oil tank, and the one or more heat dissipation pipes are in fluid communication with the engine water jacket.

[0022] Adopting the technical solution provided by the present application, compared with the prior art, it has the following beneficial effects:

[0023] Through the preheating system for cold start of the high-altitude rock drill of the present application, an oil-fired heater can be used to heat the battery and the engine cylinder jacket water, and the power of the battery can be used to heat the fuel, engine oil, air compressor oil, and air compressor air pipeline. Thus, even when the engine has a large load such as an air compressor, the difficulty of cold starting the engine can be greatly reduced, and the problem of easy icing and blockage in the air compressor air pipeline is improved. In addition, by arranging one or more heat dissipation pipes in the hydraulic oil tank that are in communication with the engine water jacket, the heat dissipation of the engine can be used to help the hydraulic system reach the efficient working temperature faster, and by taking away the heat of the engine cylinder jacket water, the energy consumption of the engine radiator is also saved to a certain extent. Through the start preheating system of the present application, each part of the drill can reach the working temperature faster, making the start easier and greatly shortening the start time. Brief Description of the Drawings

[0024] Figure 1 is a connection schematic diagram of the components of the high-altitude rock drill according to the present application;

[0025] Figure 2 is a more specific structural schematic diagram of the battery box and the battery box air heater of the high-altitude rock drill according to the present application.

[0026] Explanation of the reference numerals in the schematic diagram:

[0027] 100, whole machine controller; 1, engine; 2, battery box; 21, first temperature sensor; 22, air door; 23, battery box air heater; 24, battery; 3, cylinder jacket water heater; 31, second temperature sensor; 4, fuel tank; 41, third temperature sensor; 42, fuel pipe; 43, first oil-water separator; 44, fuel coarse filter; 45, fuel fine filter; 47, first heating sheath; 48, second heating sheath; 49, third heating sheath; 5, oil pan; 51, fourth temperature sensor; 52, oil pan heater; 6, air compressor; 61, fifth temperature sensor; 62, sixth temperature sensor; 63, second oil-water separator; 64, air compressor air pipeline; 65, fourth heating sheath; 66, heating tape; 7, hydraulic oil tank; 71, heat dissipation pipe. Detailed Embodiments

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will describe the specific embodiments of the present application with reference to the accompanying drawings. To make the drawings concise, only the parts related to the present application are schematically shown in the drawings, and they do not represent their actual structures as products.

[0029] In various embodiments, the high-cold rock drill according to the present application includes an engine 1, an oil pan 5 for containing engine oil, a storage battery 24, a hydraulic oil tank 7 for containing hydraulic oil, a fuel tank 4 for containing fuel, a fuel pipe 42 for delivering fuel, a first oil-water separator 43 for separating water in the fuel, a fuel coarse filter 44 for filtering out large particles such as dust and sand in the diesel, a fuel fine filter 45 for filtering out fine particle impurities in the diesel, and an air compressor 6. The fuel tank 4, the first oil-water separator 43, the fuel coarse filter 44, and the fuel fine filter 45 are connected to each other through the fuel pipe 42. The oil pan 5 is attached to the engine 1. The engine 1 is connected to the air compressor and is connected to the fuel tank 4, the first oil-water separator 43, the fuel coarse filter 44, and the fuel fine filter 45 through the fuel pipe 42. The air compressor 6 may include a second oil-water separator 63 for separating water in the air compressor oil, and an air compressor air circuit pipeline 64. The engine 1 may include an engine water jacket for containing cylinder jacket water.

[0030] The high-cold rock drill according to the present application further includes: an oil-burning heater and an electric heater, wherein the oil-burning heater is connected to the fuel tank 4 through the fuel pipe 42 and heats the engine 1 and the storage battery 24 by burning fuel, and the electric heater is electrically connected to the storage battery 24 and heats the fuel, engine oil, air compressor oil, and the air compressor air circuit pipeline by the electric power from the storage battery 24.

[0031] In a preferred embodiment, the high-cold rock drill according to the present application further includes a control system. The control system may include a whole machine controller 100. The whole machine controller 100 is communicatively connected to the oil-burning heater and the electric heater to control the oil-burning heater and the electric heater. In addition, the whole machine controller 100 can collect and monitor various parameters from various components of the drill, such as pressure, temperature, speed, rotational speed, and torque, etc., and adjust the operating state of the drill in real time according to these parameters.

[0032] As Figure 1 shown, the green dashed line in the figure represents the communication line; the yellow dashed line in the figure represents the flow line of fuel and air compressor oil; the blue dashed line in the figure represents the flow line of cylinder jacket water; the red line in the figure represents the air flow line in the air compressor air circuit pipeline.

[0033] In one embodiment of the present application, the storage battery 24 can be arranged in the storage battery box 2, and multiple storage batteries 24 can be used to form a storage battery pack, so as to meet the voltage level requirements, improve the total capacity, and increase the reliability and stability. The oil-fired heater according to the present application can be purchased from the market. The oil-fired heater can include a storage battery box air heater 23, which can be connected to the fuel tank 4 of the high-cold rock drill and can heat the air entering the storage battery box 2 by burning the fuel from the fuel tank 4. The heated air can then heat the storage battery 24 or the storage battery pack in the storage battery box 2. The discharge capacity of the heated storage battery 24 can be improved, and more efficient discharge can be performed for use in the starting stage of the whole machine.

[0034] In one embodiment of the present application, the control system of the high-cold rock drill according to the present application can include a first temperature sensor 21 disposed in the storage battery box 2 for sensing the temperature of the heated air in the storage battery box 2.

[0035] Specifically, as Figure 2 shown, the storage battery box 2 can include an air inlet, a damper 22 and a damper actuator (not shown), and the damper actuator can be controlled by the whole machine controller 100 to actuate the damper. The storage battery box air heater 23 can be disposed near the damper 22. The whole machine controller 100 can be communicatively connected to the first temperature sensor 21, the damper actuator and the storage battery box air heater 23 to control the damper actuator and the storage battery box air heater 23 according to the temperature of the air sensed by the first temperature sensor 21. In this embodiment, the air entering the storage battery box 2 can be heated by the storage battery box air heater 23. In one embodiment, the first temperature sensor 21 can be disposed on the opposite side of the damper 22 in the storage battery box 2, and the heated air flows in the direction of the illustrated arrow, so as to heat the storage battery 24 or the storage battery pack. The hot air after heat exchange will return to the storage battery box air heater 23 to be reheated, so as to achieve heat preservation of the storage battery 24 or the storage battery pack.

[0036] During the start-up phase of the whole machine, when the first temperature sensor 21 senses that the temperature of the air is lower than the set temperature T1, the whole machine controller 100 can control the damper actuator to close the damper 22, and can control the battery box air heater 23 to heat the air around it; when the first temperature sensor 21 senses that the temperature of the air reaches the set temperature T1, the whole machine controller 100 can automatically control the damper actuator to adjust the opening angle of the damper 22 so that the temperature of the air in the battery box 2 is maintained at the set temperature T1, where T1 can be set according to the product state and the ambient temperature, and T1 can be, for example, 90 °C. After the whole machine starts up, since the battery 24 no longer needs to perform a discharge operation, the battery box air heater 23 can be turned off, and the turning off of the battery box air heater 23 can be manually implemented by an operator or automatically implemented by the whole machine controller 100 of the control system.

[0037] In an embodiment of the present application, the oil-fired heater according to the present application may further include a cylinder jacket water heater 3, and the cylinder jacket water heater 3 may include an oil pump, a water pump, an intake pipe, an exhaust pipe, an inlet pipe, and a return pipe. The oil pump may be connected to the fuel tank 4 and the cylinder jacket water heater 3, the intake pipe may be connected to the peripheral environment, the exhaust pipe may be connected to the engine 1, and the water pump may be connected to the engine water jacket containing the engine cylinder water via the inlet pipe.

[0038] In an embodiment of the present application, the control system may include a second temperature sensor 31 for sensing the temperature of the engine cylinder water, and the whole machine controller 100 may be communicatively connected to the second temperature sensor 31 and the cylinder jacket water heater 3 to control the cylinder jacket water heater 3 based on the temperature of the cylinder water in the engine water jacket sensed by the second temperature sensor 31.

[0039] During the start-up phase of the whole machine, fuel from the fuel tank 4 can be sent into the cylinder jacket water heater 3 through the oil pump, and the fuel can be mixed with the air entering from the intake pipe. The oil-gas mixture burns in the cylinder jacket water heater 3, and the heat generated by the combustion can heat the engine cylinder water sucked in through the inlet pipe by the water pump. The heated engine cylinder water can return to the engine 1 via the return pipe, and the exhaust gas after combustion can be discharged via the exhaust pipe.

[0040] When the second temperature sensor 31 senses that the temperature of the engine jacket water reaches the set temperature T2, the whole machine controller 100 can control the jacket water heater 3 to stop heating, where T2 can be set according to the product state and the ambient temperature, and T2 can be, for example, in the range of 45°C to 80°C. Specifically, during the process of the whole machine controller 100 controlling the jacket water heater 3 to stop heating, the whole machine controller 100 can first turn off the oil pump to interrupt the fuel supply to the jacket water heater 3, and then the jacket water heater 3 stops burning fuel, and the temperature of the engine jacket water no longer rises. Advantageously, the engine jacket water in the engine water jacket can also heat the air intake system, the cab, and the exhaust gas aftertreatment system of the rock drill, thereby reducing the difficulty of cold starting of the engine 1 and extending the service life of the engine 1.

[0041] In an embodiment of the present application, the electric heater of the high-cold rock drill according to the present application may include a fuel heater arranged on the fuel tank 4, a heating element arranged in the fuel pipe 42, a first heating sheath 47 arranged on the first oil-water separator 43, a second heating sheath 48 arranged on the fuel coarse filter 44, and a third heating sheath 49 arranged on the fuel fine filter 45. The fuel heater, the heating element, the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 may be electrically connected to the storage battery 24.

[0042] Specifically, the fuel heater has an oil suction port and an oil return port. The oil suction port of the fuel heater can be connected to the first oil-water separator 43 through the fuel pipe 42. The first oil-water separator 43 can be connected to the fuel coarse filter 44 through the fuel pipe 42. The fuel coarse filter 44 can be connected to the fuel fine filter 45 through the fuel pipe 42. The fuel fine filter 45 can be connected to the engine 1 through the fuel pipe 42. The oil outlet of the engine 1 can be connected to the oil return port of the fuel heater arranged on the fuel tank 4 through the fuel pipe 42. For example, the fuel heater can be a PTC heater, and the fuel heater is electrically connected to the storage battery 24, so that the fuel near the oil suction port can be heated by the power from the storage battery 24. For example, the heating element arranged in the fuel pipe 42 can be an insulating oil-resistant heating resistance wire, and the outer layer of the insulating oil-resistant heating resistance wire is covered with materials such as fluororubber and fluoroplastics, so that the heating resistance wire is not only electrically insulated but also oil-resistant, ensuring that the heating resistance wire will not be eroded by fuel during long-term use. The insulating oil-resistant heating resistance wire can be electrically connected to the storage battery 24, so that the fuel in the fuel pipe 42 can be heated by the power from the storage battery 24.

[0043] Similarly to the fuel heater, the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 can also be, for example, sheaths made of PTC material. These heating sheaths can be electrically connected to the storage battery 24 and are used to heat the fuel at the first oil-water separator 43, the fuel coarse filter 44, and the fuel fine filter 45, respectively.

[0044] In an embodiment of the present application, a third temperature sensor 41 can be arranged in the fuel pipe 42, at the first oil-water separator 43, at the fuel coarse filter 44, or at the fuel fine filter 45 to sense the temperature of the fuel. Moreover, in this embodiment, the whole machine controller 100 can be communicatively connected to the third temperature sensor 41, the fuel heater, the heating element, the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 to control the fuel heater, the heating element arranged in the fuel pipe, and the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 according to the temperature of the fuel sensed by the third temperature sensor 41.

[0045] A first threshold temperature T31 and a second threshold temperature T32 can be set. When the temperature of the fuel in the fuel pipe is lower than T31, the third controller controls the fuel heater, the heating element arranged in the fuel pipe, and the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 to start heating; when the temperature of the fuel in the fuel pipe is higher than T32, the third controller controls the fuel heater, the heating element arranged in the fuel pipe, and the first heating sheath 47, the second heating sheath 48, and the third heating sheath 49 to stop heating, where T31 and T32 can be set according to the product state and the ambient temperature. T31 can be, for example, 5°C, and T32 can be, for example, 18°C. Advantageously, by heating the fuel, the waxed fuel can be brought to a usable state, and even using a lower grade of fuel can meet the starting requirements, thereby saving the price difference between high and low grade fuels.

[0046] In an embodiment of the present application, the electric heater of the high-cold rock drill according to the present application can include an oil pan heater 52. The oil pan heater 52 can be detachably connected to the oil pan 5, for example, by threads, and the oil pan heater 52 is electrically connected to the storage battery 24 and is used to heat the engine oil in the oil pan 5 using the power from the storage battery 24. In an embodiment of the present application, a fourth temperature sensor 51 for sensing the temperature of the engine oil in the oil pan 5 can be arranged in the oil pan 5. The whole machine controller 100 can be communicatively connected to the fourth temperature sensor 51 and the oil pan heater 52 to control the oil pan heater 52 according to the temperature of the engine oil in the oil pan 5 sensed by the fourth temperature sensor 51.

[0047] Specifically, during the startup phase of the whole machine, the oil pan heater 52 can utilize the power of the battery 24 to heat the engine oil in the oil pan 5. The whole machine controller 100 can control the oil pan heater 52 to start heating when the temperature of the engine oil sensed by the fourth temperature sensor 51 is lower than the set temperature T4, and control the oil pan heater 52 to stop heating when the temperature of the engine oil sensed by the fourth temperature sensor 51 reaches the set temperature T4. Here, T4 can be set according to the product state and ambient temperature, and T4 can be, for example, in the range of -5°C to 5°C. By heating the engine oil, the problem of large resistance between each friction pair caused by the large viscosity of the engine oil at low temperature can be effectively improved, so that the starting speed of the engine 1 will not decrease, and thus the starting power will not increase.

[0048] In an embodiment of the present application, the electric heater of the high-cold rock drill according to the present application includes a fourth heating sheath 65 arranged on the second oil-water separator 63 of the air compressor 6, and a heating tape 66 arranged on the air compressor air pipeline 64. Both the fourth heating sheath 65 and the heating tape 66 are electrically connected to the battery 24.

[0049] In an embodiment of the present application, a fifth temperature sensor 61 can be arranged at the second oil-water separator 63, and a sixth temperature sensor 62 can be arranged on the heating tape 66. The whole machine controller 100 is communicatively connected to the fifth temperature sensor 61, the sixth temperature sensor 62, the fourth heating sheath 65, and the heating tape 66 to control the fourth heating sheath 65 based on the temperature of the compressed air engine oil at the second oil-water separator 63 of the air compressor 6 sensed by the fifth temperature sensor 61, and control the heating tape 66 based on the temperature of the air around the heating tape 66 sensed by the sixth temperature sensor 62.

[0050] Specifically, the fourth heating sheath 65 can be similar to the above-mentioned first heating sheath 47, second heating sheath 48, and third heating sheath 49, and is, for example, a sheath made of PTC material. By using the power from the battery 24 to heat the compressed air engine oil at the second oil-water separator 63, the whole machine controller 100 can control the fourth heating sheath 65 to start heating when the temperature of the compressed air engine oil sensed by the fifth temperature sensor 61 is lower than the set temperature T5, and control the fourth heating sheath 65 to stop heating when the temperature of the compressed air engine oil sensed by the fifth temperature sensor 61 reaches the set temperature T5. Here, T5 can be set according to the product state and ambient temperature, and T5 can be, for example, in the range of -5°C to 5°C. By heating the compressed air engine oil, the fluidity of the compressed air engine oil can be improved, and mechanical friction can be reduced.

[0051] In a preferred embodiment, the heating tape 66 can be wrapped around, for example, the air compressor air circuit pipeline 64. The heating tape 66 has heating wires inside. The heating tape 66 can use the power from the storage battery 24 to heat the air compressor air circuit pipeline 64, heat the frozen water remaining in the air circuit pipeline to melt the ice, so that the air circuit pipeline will not freeze and affect the operation, thereby solving the problem that the air circuit pipeline is prone to freezing and blocking under extremely cold working conditions.

[0052] In an embodiment of the present application, the high-cold rock drill according to the present application may further include a hydraulic oil tank 7 for containing hydraulic oil. One or more heat dissipation pipes 71 can be arranged in the hydraulic oil tank 7. The one or more heat dissipation pipes 71 can be in fluid communication with the engine water jacket. The engine jacket water heated in the engine water jacket can flow through the one or more heat dissipation pipes 71, so that the hydraulic oil in the hydraulic oil tank 7 can be heated through heat exchange.

[0053] Specifically, the heat dissipation pipe 71 can be, for example, a stainless steel heat dissipation pipe. A part of it can be detachably installed at the bottom of the hydraulic oil tank 7 through straight threads and can be sealed with a seal such as an O-ring. The upper water inlet of the one or more heat dissipation pipes 71 can be in fluid communication with the engine water jacket, so that the jacket water heated by the jacket water heater 3 can flow through the one or more heat dissipation pipes 71, so that the heated jacket water can exchange heat with the low-temperature hydraulic oil in the hydraulic oil tank 7, thereby achieving the purpose of heating the hydraulic oil. Advantageously, after the hydraulic oil is heated and the temperature rises, the hydraulic oil can have enhanced fluidity, which is more conducive to the startup of the whole machine. It is worth mentioning that after the whole machine starts and begins to operate, the one or more heat dissipation pipes 71 can still continue to use the engine jacket water to heat the hydraulic oil. By using the heat dissipated by the engine 1 through the jacket water to make the hydraulic oil reach the efficient working temperature, the energy consumption of the engine radiator can be saved to a certain extent.

[0054] In various embodiments of the present application, the communication connection between the whole machine controller 100 and each temperature sensor, each component of the fuel oil heater and the electric heater, and other components can be a wireless connection such as Wi-Fi, infrared, Bluetooth, Zigbee, cellular, or a wired connection such as wires and cables.

[0055] In summary, the dual heating system for the high-cold rock drill according to the present application has the following beneficial effects: The fuel oil heater can be used to heat the battery and the engine cylinder jacket water, and the battery can be used to heat the fuel oil, engine oil, air compressor oil, and the air circuit pipeline of the air compressor. Thus, even when the engine has a large load such as an air compressor, the difficulty of cold starting the engine can be greatly reduced, and the problem of ice blockage in the air circuit pipeline of the air compressor is improved. In addition, by arranging one or more heat dissipation pipes communicated with the engine water jacket in the hydraulic oil tank, the heat dissipation of the engine can be used to help the hydraulic system reach the efficient working temperature faster, and by taking away the heat of the engine cylinder jacket water, the energy consumption of the engine radiator can be saved to a certain extent. Furthermore, through the dual heating system of the present application, each part of the drill can reach the working temperature faster, making the start easier and greatly shortening the start-up time.

[0056] The above has schematically described the present application and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present application, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present application, design structural manners and embodiments similar to the technical solution without creative efforts, they shall fall within the protection scope of the present application.

Claims

1. A preheating system for cold start of a high-cold rock drill, the high-cold rock drill comprising an engine, an oil pan for containing engine oil, a hydraulic oil tank for containing hydraulic oil, a storage battery, a fuel tank for containing fuel, a fuel pipe, a first oil-water separator for separating water in the fuel, a fuel coarse filter, a fuel fine filter, and an air compressor, wherein the fuel tank, the first oil-water separator, the fuel coarse filter, and the fuel fine filter are interconnected by the fuel pipe, the oil pan is attached to the engine, the engine is connected to the air compressor and is connected to the fuel tank, the first oil-water separator, the fuel coarse filter, and the fuel fine filter through the fuel pipe, the air compressor comprises a second oil-water separator for separating water in the air compressor oil, and an air compressor air circuit pipeline, characterized in that, Comprising: An oil-burning heater and an electric heater, wherein the oil-burning heater is connected to the fuel tank and heats the engine and the battery by burning the fuel, and the electric heater is electrically connected to the battery and heats the fuel, the engine oil, the air compressor oil, and the air compressor air pipeline by the power from the battery.

2. The preheating system for cold start of the high-cold rock drill according to claim 1, characterized in that, Further comprising a control system, the control system includes a whole-machine controller, and the whole-machine controller is communicatively connected to the oil-burning heater and the electric heater to control the oil-burning heater and the electric heater.

3. The preheating system for cold start of an alpine rock drill according to claim 2, characterized in that, The battery is housed in a battery box, and the oil-burning heater includes a battery box air heater, and the battery box air heater is connected to the fuel tank and the battery box and heats the air in the battery box by burning the fuel to heat the battery.

4. The preheating system for cold start of an alpine rock drill according to claim 3, characterized in that, The battery box includes a damper and a damper actuator, and the control system includes a first temperature sensor located on the opposite side of the damper in the battery box, and the whole-machine controller is communicatively connected to the battery box air heater and the damper actuator to control the damper actuator and the battery box air heater according to the temperature of the air sensed by the first temperature sensor.

5. The preheating system for cold start of a high-cold rock drill according to claim 2, characterized in that, The oil-burning heater includes a cylinder jacket water heater, and the cylinder jacket water heater is connected to the fuel tank and is in fluid communication with the engine water jacket of the engine for containing cylinder jacket water, and the cylinder jacket water heater heats the cylinder jacket water by burning the fuel.

6. The preheating system for cold start of an alpine rock drill according to claim 5, characterized in that, The control system includes a second temperature sensor located in the engine water jacket, and the whole-machine controller is communicatively connected to the cylinder jacket water heater to control the cylinder jacket water heater according to the temperature of the cylinder jacket water sensed by the second temperature sensor.

7. The preheating system for cold start of an alpine rock drill according to claim 2, characterized in that The electric heater includes a fuel heater arranged on the fuel tank, a heating element arranged in the fuel pipe, a first heating sheath arranged on the first oil-water separator, a second heating sheath arranged on the fuel coarse filter, and a third heating sheath arranged on the fuel fine filter, and the fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath are electrically connected to the battery.

8. The preheating system for cold start of an alpine rock drill according to claim 7, characterized in that, The control system includes a third temperature sensor arranged at one of the fuel pipe, the first oil-water separator, the fuel coarse filter, and the fuel fine filter, and the whole-machine controller is communicatively connected to the fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath to control the fuel heater, the heating element, the first heating sheath, the second heating sheath, and the third heating sheath according to the temperature of the fuel sensed by the third temperature sensor.

9. The preheating system for cold start of the high-cold rock drill according to claim 2, characterized in that, The electric heater includes an oil pan heater, and the oil pan heater is arranged in the oil pan and is electrically connected to the battery.

10. The preheating system for cold start of an alpine rock drill according to claim 9, characterized in that, The control system includes a fourth temperature sensor disposed in the oil pan, and the whole machine controller is communicatively connected to the oil pan heater to control the oil pan heater according to the temperature of the engine oil sensed by the fourth temperature sensor.

11. The preheating system for cold start of an alpine rock drill according to claim 2, characterized in that, The electric heater includes a fourth heating sheath disposed on the second oil-water separator and a heating tape disposed on the air compressor air pipeline, and the fourth heating sheath and the heating tape are electrically connected to the storage battery.

12. The preheating system for cold start of an alpine rock drill according to claim 11, characterized in that, The control system includes a fifth temperature sensor disposed at the second oil-water separator and a sixth temperature sensor disposed on the heating tape. The whole machine controller is communicatively connected to the fourth heating sheath and the heating tape to control the fourth heating sheath according to the temperature of the air compressor oil sensed by the fifth temperature sensor, and to control the heating tape according to the temperature of the air around the heating tape sensed by the sixth temperature sensor.

13. The preheating system for cold start of a high-cold rock drill according to any one of claims 1 to 12, characterized in that, One or more heat dissipation pipes are disposed in the hydraulic oil tank, and the one or more heat dissipation pipes are in fluid communication with the engine water jacket.

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