CN107762705B - Extremely cold preheating system of loader - Google Patents

Abstract

The invention discloses an extremely cold preheating system of a loader, which comprises a heating boiler, a water collector, an engine, a fuel oil heater, a hydraulic oil heater, a bridge heat dissipation oil heater, a battery heater, a warm air blower, a tool box, a fuel tank, a hydraulic oil tank, a bridge heat dissipation oil tank, a battery box and a cab. The water inlet and return ports of the heating boiler are respectively connected with two ends of the water collector, the water inlet and return ports of the engine are respectively connected with two sides of the water collector, the fuel oil heater, the hydraulic oil heater, the bridge heat dissipation oil heater, the storage battery heater and the fan heater are respectively connected with reserved interfaces of the water collector, and the water inlet and return ports of the heating boiler are respectively connected with the reserved interfaces of the water collector, so that the fuel tank, the hydraulic oil tank, the bridge heat dissipation oil tank, the storage battery tank and the cab are respectively preheated, the complete machine obtains a better low-temperature starting environment, and the adaptability of the complete machine under extremely cold working conditions is improved.

Description

A loader extreme cold preheating system

technical field

The invention relates to an extreme cold preheating system for a loader, in particular to a complete machine preheating system for a loader under extreme cold conditions, and belongs to the technical field of engineering machinery.

Background technique

The loader has a wide range of use and a large area of use. The existing loader is generally equipped with a low-temperature start. The basic principle is to take power from the battery and heat the engine oil according to the heating resistance wire installed in the engine oil pan. When the whole machine is in a low temperature environment, the battery capacity will decrease, and the heating resistance wire will consume the battery capacity. Long-term use will cause the battery to lose power, which cannot meet the huge current required for engine startup, thus affecting engine startup. Limited to the capacity of the on-board battery, it is not possible to use the heating resistance wire to preheat other systems on a large scale; in addition, the above-mentioned heating resistance wire is also powered by an external power supply instead of the on-board battery, but this method is often used in mines. Remote places without external power supply conditions such as field construction cannot meet the cold start preheating requirements, which limits the scope of use of the whole machine and poor adaptability to working conditions.

In addition, the engine generally only reserves the heating resistance wire interface on the oil pan. This heating method can only preheat the oil in the oil pan. The consistency is still high. When the engine is cold-started, it will cause increased wear on the engine piston rod, camshaft, etc., which will affect the service life of the engine. At the same time, the combustion chamber with a lower temperature will also cause insufficient combustion during the initial stage of compression ignition. If things go on like this The use of cold start will cause serious carbon deposits in the combustion chamber, which will affect the normal use of the engine and increase fuel consumption, which will seriously affect the brand competitiveness of the whole machine.

Contents of the invention

Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a loader extreme cold preheating system, using engine antifreeze as the medium, through an external heating boiler, heating water from the engine, and transporting it to each The system achieves the purpose of preheating each system through heat exchange. This preheating method is not limited by the site. One-key control can realize the preheating of the whole machine, which is simple and convenient, and greatly improves the adaptability of the whole machine to working conditions.

Technical solution: In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is:

An extremely cold preheating system for a loader, characterized in that it includes a heating boiler, a water collector, an engine, a fuel heater, a hydraulic oil heater, a bridge radiator oil heater, a battery heater, and a heater;

The inlet and outlet of the heating boiler are respectively connected to both ends of the water collector, the inlet and outlet water of the engine are respectively connected to the water collector, the inlet and outlet water of the fuel heater, hydraulic oil heater, bridge radiator oil heater, battery heater, and heater are respectively connected It is connected to the reserved interface of the water collector, and the heat transfer medium is heated by an external heating boiler, and the fuel oil, hydraulic oil, bridge cooling oil, battery and cab are respectively preheated through the water outlet of the hot water area of the water collector, and returned to the water collector. The cool water area of the water heater is then reheated by the heating boiler to form a circulating heating pipeline to realize the effect of preheating the whole machine before the engine starter.

Further, the extreme cold preheating system for the loader is characterized in that it also includes a tool box, the heating boiler is installed in the tool box, and the bottom plate of the tool box has two through holes for the heating boiler air intake and exhaust .

Further, the extreme cold preheating system of the loader is characterized in that it also includes an ignition switch, and the heating boiler is activated by the ignition switch installed inside the cab.

Further, the fuel heater is installed inside the fuel tank, close to the oil suction port of the fuel tank, so as to shorten the temperature raising time near the oil suction port. The hydraulic oil heater is installed inside the hydraulic oil tank near the oil suction port of the hydraulic oil tank to increase the temperature near the oil suction port. The bridge heat dissipation heater is installed in the bridge heat dissipation oil tank and is located near the oil suction port of the bridge heat dissipation oil tank. The battery heater is installed inside the battery box at the bottom of the battery. The heater is located inside the cab and preheats the air inside the cab through heat exchange to improve operating comfort.

Further, the water collector is divided into a hot water area and a cold water area, and the hot water area and the cold water area are not connected to each other; the hot water area has a main water inlet connected to the heating boiler outlet, and the hot water area has multiple hot water The water outlets provide hot water for the engine, fuel heater, hydraulic oil heater, bridge cooling oil heater, battery heater, and fan heater; there is a main water outlet in the cold water area, which is connected to the water inlet of the heating boiler. There are two water return ports, which respectively undertake the fuel heater, hydraulic oil heater, bridge radiator oil heater, battery heater, heater and engine return water. The preheating system can also directly preheat a certain system or component without going through the water collector, and can also flexibly adjust the amount of system preheating by increasing or decreasing the number of water inlet and return ports of the water collector.

Further, the heating boiler takes oil from the fuel tank and heats the heat transfer medium (engine antifreeze) after burning. The heating boiler is used as the heat source of the preheating system, including but not limited to providing heat through fuel combustion. The water in the water entering and returning mentioned in the present invention includes but not limited to engine antifreeze, as a heat transfer medium, other media with the same function are all within the protection scope of this patent.

Beneficial effects: the extremely cold preheating system for loaders provided by the present invention heats the heat transfer medium through an external heating boiler, and the fuel oil, hydraulic oil, bridge cooling oil, battery and driving The chamber is preheated, returned to the cool water area of the water collector, and then reheated by the heating boiler to form a circulating heating pipeline to achieve the effect of preheating the whole machine before the engine is started. Because the antifreeze mainly plays the role of water cooling and heat dissipation when the engine is running normally, it takes away the heat of the combustion chamber and engine oil, so the water cooling and heat dissipation pipelines are spread all over the engine body. The transmission medium (engine antifreeze) is preheated, and a circulating heating pipeline is formed, which can efficiently preheat the engine body and engine oil, so that it can quickly reach the normal starting temperature; The system is preheated, so that the whole machine can obtain a better low-temperature start-up environment, and improve the adaptability of the whole machine under extremely cold working conditions. The antifreeze is heated by heating the boiler, and the engine antifreeze is used as the medium to continuously transfer heat to each required preheating system by forming a circulating pipeline, so as to achieve the effect of preheating the whole machine before the engine starts and improve the low temperature. Startup success rate.

Description of drawings

Fig. 1 is the system schematic diagram of the embodiment of the present invention;

Fig. 2 is a schematic structural view (front view) of an embodiment of the present invention;

Fig. 3 is a schematic structural view (top view) of an embodiment of the present invention;

Figure 4 is an auxiliary schematic diagram of the structure of the main components and the connection of the pipeline;

In the figure: 1. engine, 2. heating boiler, 3. battery heater, 4. battery box, 5. battery box, 6. battery box, 7. battery box, 8. bridge cooling oil tank, 9. bridge cooling oil heating 10. Hydraulic oil heater, 11. Ignition switch, 12. Air heater, 13. Cab, 14. Hydraulic oil tank, 15. Toolbox.

Detailed ways

The present invention will be further described below in conjunction with specific examples.

As shown in Figures 1 to 3, it is a loader extreme cold preheating system, including a heating boiler 2, a water collector 7, an engine 1, a fuel heater 6, a hydraulic oil heater 10, and a bridge cooling oil heater 9 , battery heater 3, warm air blower 12; the inlet and outlet of the heating boiler 2 are respectively connected with the two ends of the water collector 7, the inlet and outlet water of the engine 1 are respectively connected with the water collector 7, the fuel heater 6, the hydraulic oil heater 10, The bridge radiator oil heater 9, the battery heater 3, and the water heater 12 are respectively connected to the reserved interface of the water collector 7, and the specific working principle is shown in Fig. 1 . The engine antifreeze is heated by an external heating boiler, and the fuel oil, hydraulic oil, bridge radiator oil, battery and cab are preheated through five outlets in the hot water area of the water collector, and then flowed back to the cold water area of the water collector, and then passed through The heating boiler is reheated to form a circulating heating pipeline to achieve the effect of preheating the whole machine before the engine is started. The antifreeze is heated by heating the boiler, and the engine antifreeze is used as the medium to continuously transfer heat to each required preheating system by forming a circulating pipeline, so as to achieve the effect of preheating the whole machine before the engine starts and improve the low temperature. Startup success rate.

Further, as shown in FIG. 2 , an ignition switch 11 is also included, and the heating boiler 2 is activated through the ignition switch 11 installed inside the cab 13 .

Further, as shown in FIG. 2 , it also includes a tool box 15 , the heating boiler 2 is installed in the tool box 15 , and the bottom plate of the tool box 15 has two through holes, which are convenient for the heating boiler 2 to intake and exhaust.

Further, the fuel tank 5 is also included, and the fuel heater 6 is installed inside the fuel tank 5, close to the oil suction port of the fuel tank 5, so as to shorten the temperature raising time near the oil suction port.

Further, a hydraulic oil tank 14 is also included, and the hydraulic oil heater 10 is installed inside the hydraulic oil tank 14 near the oil suction port of the hydraulic oil tank 14 to increase the temperature near the oil suction port.

Further, it also includes a bridge cooling oil tank 8 , and the bridge cooling heater 9 is installed in the bridge cooling oil tank 8 and is located near the oil suction port of the bridge cooling oil tank 8 .

Further, a battery box 4 is also included, and the battery heater 3 is installed inside the battery box 4 at the bottom of the battery.

Further, it also includes a cab 13, the heater 12 is located inside the cab 13, and preheats the air inside the cab 13 through heat exchange to improve the operating comfort.

Further, as shown in Figure 4, the water collector 7 is divided into a hot water area and a cold water area, which are not connected to each other; the hot water area has a main water inlet connected to the water outlet of the heating boiler 2, and there are five hot water outlets The water outlets are engine 1, fuel heater 6, hydraulic oil heater 10, bridge cooling oil heater 9 (a hot water outlet is shared with the hydraulic oil heater 10 through the three-way joint, and the same is true for returning water), battery heating The device 3 and the heater 12 provide hot water; the cold water area has a main water outlet connected to the water inlet of the heating boiler 2, and has five water return ports for respectively receiving the above-mentioned heater, heater 12 and engine 1 return water.

Further, the heating boiler 2 needs to take oil from the fuel tank 6 and heat it for engine antifreeze after combustion.

It should be pointed out that the above-mentioned preheating system can directly preheat a certain system or component without using the water collector, and can also flexibly adjust the preheating quantity of the system by increasing or decreasing the number of water inlet and return ports of the water collector. At the same time, match the heating power of the heating boiler to achieve the most suitable preheating state for the whole machine.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (9)

1. A loader extreme cold preheating system, characterized in that it includes a heating boiler, a water collector, an engine, a fuel heater, a hydraulic oil heater, a bridge radiator oil heater, a battery heater, and a heater; The inlet and outlet of the heating boiler are respectively connected to both ends of the water collector, the inlet and outlet water of the engine are respectively connected to the water collector, the inlet and outlet water of the fuel heater, hydraulic oil heater, bridge radiator oil heater, battery heater, and heater are respectively connected Connect with the reserved interface of the water collector, heat the heat transfer medium through the heating boiler, preheat the fuel oil, hydraulic oil, bridge cooling oil, battery and cab through the water outlet of the hot water area of the water collector, and return to the water collector The cold water area is then reheated by the heating boiler to form a circulating heating pipeline to achieve the effect of preheating the whole machine before the engine starter; The water collector is divided into a hot water area and a cold water area, and the hot water area and the cold water area are not connected to each other; the hot water area has a main water inlet connected to the water outlet of the heating boiler, and the hot water area has multiple hot water outlets. Provide hot water for the engine, fuel heater, hydraulic oil heater, bridge cooling oil heater, battery heater, and fan heater respectively; the cold water area has a main water outlet connected to the heating boiler water inlet, and the cold water area has multiple water return ports , respectively undertake fuel heaters, hydraulic oil heaters, bridge cooling oil heaters, battery heaters, heaters and engine return water. 2. The extremely cold preheating system for the loader according to claim 1, characterized in that: it also includes a tool box, the heating boiler is installed in the tool box, and the bottom plate of the tool box has two through holes for heating the boiler intake air ,exhaust. 3. The extremely cold preheating system for the loader according to claim 1, further comprising an ignition switch, and the heating boiler is started by the ignition switch installed inside the cab. 4. The extreme cold preheating system of the loader according to claim 1, wherein the fuel heater is installed inside the fuel tank, close to the oil suction port of the fuel tank, so as to shorten the temperature raising time near the oil suction port. 5. The extremely cold preheating system for the loader according to claim 1, wherein the hydraulic oil heater is installed inside the hydraulic oil tank near the oil suction port of the hydraulic oil tank to increase the temperature near the oil suction port. 6. The extremely cold preheating system for the loader according to claim 1, wherein the axle cooling oil heater is installed in the axle cooling oil tank, near the oil suction port of the axle cooling oil tank. 7. The extreme cold preheating system for the loader according to claim 1, wherein the battery heater is installed inside the battery box, at the bottom of the battery. 8. The extremely cold preheating system for the loader according to claim 1, wherein the heater is located inside the cab and preheats the air inside the cab through heat exchange to improve operating comfort. 9. The extremely cold preheating system for the loader according to claim 1, wherein the heating boiler takes oil from the fuel tank and heats it as a heat transfer medium after combustion.

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