Hinged dumper high-temperature heat dissipation system

Abstract

The hinged type dumper high-temperature heat dissipation system comprises a machine cover, a main heat dissipation assembly, an engine, a side box body, an auxiliary heat dissipation assembly, a frame and an expansion water tank, the machine cover, the engine, the main heat dissipation assembly, the side box body and the expansion water tank are all installed on the frame, the side box body has the function of bearing a maintenance walking board on the shoulder, and the auxiliary heat dissipation assembly is installed in the side box body. The main heat dissipation assembly and the auxiliary heat dissipation assembly are connected in series and connected with an engine to jointly dissipate heat of the engine, a water pump is arranged on the engine, the auxiliary heat dissipation assembly is additionally arranged to expand the heat dissipation capacity of an existing main heat dissipation assembly, and the side box body is selected to be close to the side to eject out, so that heat dissipation airflow of a main heat dissipation device is not interfered, and meanwhile heat dissipation efficiency is improved. According to the invention, the feasibility of vehicle attendance can be developed for extreme high-temperature working conditions, the use satisfaction degree of client equipment can be improved, the benefits brought by the equipment can be improved, and the rights and interests of clients can be maintained.

Description

Technical Field

[0001] The invention relates to a heat dissipation system for a dump truck, in particular to a high-temperature heat dissipation system for an articulated dump truck. Background Art

[0002] The existing articulated dump truck engine heat dissipation basically relies on the radiator located at the front of the vehicle. The radiator dissipates the heat of the coolant into the air through aluminum fins, and then the hot air is taken away by the cold air flow sucked in by the engine fan. The existing solution can meet the ambient temperature of the equipment in most countries, but in some areas with extremely high temperature seasons (such as Saudi Arabia, Tajikistan, etc.), the equipment will have to shut down due to high temperature alarms.

[0003] The causes of the above technical problems and defects; (1) The existing radiator located at the front of the vehicle falls on the frame and is covered inside the hood. Therefore, its width is limited by the left and right longitudinal beams of the front frame, its height is limited by the frame and the top surface of the hood, and its thickness is limited by the front end of the engine fan and the hood. Its overall heat dissipation area has no possibility of being expanded based on the existing space; (2) The layout of the radiator needs to take into account the inflow of cold air and the discharge of hot air, so as to avoid the hot air returning to the front of the radiator, causing the radiator to repeatedly cool the hot air and reduce the cooling efficiency. The existing radiator is located at the front of the vehicle. Cold air enters from the front of the vehicle and passes through the main cooling fan. The hot air flow that is replaced will escape to the rear of the frame due to the constraints of the hood, frame and bottom guard plate, and will also escape from the air outlet on the side of the hood. Therefore, the scattered hot air flow will limit the layout of the auxiliary radiator. The already compact front frame makes it difficult to effectively ensure the cold air inlet and hot air discharge of the auxiliary radiator, and ensure that the airflow of the newly added auxiliary radiator does not interfere with the airflow of the main radiator.

[0004] (3) The existing radiator located at the front of the vehicle, in addition to natural air intake, mainly relies on a direct-connected fan driven by the front end of the engine or a fan with a clutch. The fan diameter is limited by the torque that the engine connection hub can withstand and the width of the frame longitudinal beam. Its rotation speed is also limited by the engine speed. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a high-temperature heat dissipation system for an articulated dump truck, which expands the heat dissipation capacity of the existing main radiator by adding an auxiliary heat dissipation component, and the selected side box side near-top-out solution can provide additional heat dissipation capacity without interfering with the heat dissipation airflow of the main radiator. The hydraulic motor and the self-made heat dissipation bracket in the auxiliary heat dissipation component solution remove the diameter size restriction of the auxiliary cooling fan, allowing the fan to rotate at a higher speed and bring in a larger air intake, thus opening up the feasibility of vehicle attendance in extreme high temperature conditions, which can improve customer satisfaction with the equipment, increase the benefits brought by the equipment, and safeguard the rights and interests of customers.

[0006] Open up a suitable space in the articulated dump truck, arrange the auxiliary radiator reasonably, plan the cold air inlet and hot air exhaust channels for the auxiliary radiator, ensure smooth cold air intake, and avoid the interference of hot air exhaust on the air intake and exhaust of the main radiator; reasonably place the auxiliary cooling fan of the auxiliary radiator, the speed of the auxiliary cooling fan is regulated by the hydraulic motor, the cooling bracket is stable and can withstand the torque caused by the high-speed operation of the auxiliary cooling fan, so as to break through the heat dissipation limit of the original vehicle and provide the possibility for the equipment to operate smoothly in extremely high temperature environments.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-temperature heat dissipation system for an articulated dump truck, comprising: a hood, a main heat dissipation component, an engine, a side box, an auxiliary heat dissipation component, a frame, and an expansion water tank. The hood, engine, main heat dissipation component, side box, and expansion water tank are all installed on the frame. The side box has the function of shouldering the maintenance walkway. The auxiliary heat dissipation component is installed in the side box. The main heat dissipation component and the auxiliary heat dissipation component are connected in series and are connected to the engine to jointly dissipate heat from the engine. A water pump is provided on the engine.

[0008] Furthermore, the main radiator is arranged at the front side of the engine to dissipate heat from the engine, the side box body and the expansion water tank are respectively arranged on both sides of the frame, and the engine hood plays a protective and diverting role, and the engine hood is mounted on the main radiator, the engine, and the expansion water tank.

[0009] Furthermore, the main heat dissipation component includes: a main radiator, a main cooling fan, an engine water outlet pipe, a water supply pipe, and an engine water inlet pipe; the auxiliary heat dissipation component includes: an auxiliary radiator, an auxiliary cooling fan, and a cooling bracket; the water inlet of the water pump is connected to the water outlet of the engine, the main radiator water inlet pipe is connected to the water outlet of the water pump through the engine water outlet pipe, the main radiator water outlet is connected to the auxiliary radiator water inlet through the water supply pipe, and the auxiliary radiator water outlet is connected to the engine water inlet through the engine water inlet pipe.

[0010] Furthermore, a cold air slot is opened on the vertical plate of the side box body away from the outer side of the frame, and the vertical plate has a certain angle with the forward direction of the vehicle. When the vehicle is moving, a part of the natural air intake can be utilized; the air flow direction of the auxiliary radiator is side-to-top, that is, the cold air enters from the side of the side box body, and a raised air collecting hood is provided on the box body, and an auxiliary cooling fan and a support are placed and installed inside the air collecting hood. The side of the air collecting hood away from the frame is a hollow surface serving as an outlet for exhaust hot air; the side of the air collecting hood facing the hood is a closed baffle, so that the exhaust hot air will not be discharged into the hood, thereby avoiding interference with the hot air discharge of the main radiator.

[0011] Furthermore, the auxiliary radiator is overall lower than the upper water chamber of the main radiator. The auxiliary radiator is tilted and placed inside the side box, with the front lower and the rear higher. A degassing port is provided on the higher side. When viewed from the side of the frame, the end of the auxiliary radiator close to the head of the frame is lower, and a water outlet is provided on the bottom surface of this end, and the coolant flows into the engine from the water outlet; the end of the auxiliary radiator close to the rear of the frame is higher, and a water inlet is provided on the bottom surface of this end, and the coolant from the main radiator enters the auxiliary radiator from this inlet. A degassing port is provided on the top surface of this end, which is used to balance the pressure of the main radiator and the auxiliary radiator, avoid deformation of the main radiator and the auxiliary radiator due to negative pressure, or expansion and cracking of the pipe core of the main radiator and the auxiliary radiator due to high pressure, which is beneficial to the long-term use of the main radiator and the auxiliary radiator.

[0012] Furthermore, the auxiliary cooling fan is installed in the side box through a cooling bracket, so that the auxiliary cooling fan is placed parallel to the plane of the auxiliary radiator, and a gap is provided between the end face of the auxiliary cooling fan and the auxiliary radiator to ensure that the airflow flowing through the cooling water tank is parallel wind rather than rotating airflow; the auxiliary cooling fan is driven by a hydraulic motor, and the hydraulic motor is fixed on the cooling bracket.

[0013] Furthermore, the heat dissipation bracket is manufactured by welding a steel pipe and a flat plate, and can withstand the torque generated when the selected fan is operated at its limit.

[0014] Furthermore, the heat dissipation bracket is installed on the side box body by bolts, and a rubber shock-absorbing component is provided between the heat dissipation bracket and the side box body to reduce the vibration transmitted from the body to the auxiliary heat dissipation fan, which is beneficial to prolonging the life of the auxiliary heat dissipation fan.

[0015] The beneficial effects of the present invention are: (1) An auxiliary radiator is placed in the side box of the vehicle frame, and the auxiliary radiator is connected to the main radiator in series; the airflow direction of the auxiliary radiator is side-to-side top-out, that is, cold air enters from the side of the side box, and a raised air collecting hood is provided on the side box, and an auxiliary cooling fan and a support are placed inside the raised air collecting hood. The side of the raised air collecting hood facing the outside of the vehicle frame is hollowed out as an outlet for exhausting hot air; the side of the raised air collecting hood facing the inside of the hood is kept closed, so that the exhaust hot air will not be discharged into the hood, avoiding interference with the exhaust of hot air from the main radiator water tank; (2) The auxiliary radiator is lower than the upper water chamber of the main radiator as a whole; the auxiliary radiator is placed inside the side box at a slight tilt, with the front lower and the rear higher, and a degassing port is provided on the higher side; when viewed from the side of the vehicle, the auxiliary radiator water tank is lower at the end near the front of the vehicle, and a water outlet is provided on the bottom of this end, from which the coolant flows into the engine; the auxiliary radiator is higher at the end near the rear of the vehicle, and a water inlet is provided on the bottom of this end, from which the coolant from the main radiator enters the auxiliary radiator, and a degassing port is provided on the top of this end, which is used to balance the pressure of the main radiator and the auxiliary radiator, to avoid deformation of the main radiator and the auxiliary radiator due to negative pressure, or expansion and cracking of the pipe core of the main radiator and the auxiliary radiator due to high pressure, which is conducive to the long-term use of the main radiator and the auxiliary radiator; (3) The auxiliary cooling fan is placed parallel to the plane of the auxiliary radiator. The end face of the auxiliary cooling fan is at a certain distance from the cooling water tank to ensure that the airflow passing through the cooling water tank is parallel wind rather than rotating airflow. The auxiliary cooling fan is driven by a hydraulic motor, which is fixed on the cooling bracket. The cooling bracket is made of welded steel pipes and flat plates and can withstand the torque generated when the selected fan is running at the limit. A rubber shock-absorbing component is provided between the cooling bracket and the side box body. The cooling bracket with the rubber shock-absorbing component is installed on the top of the side box body by bolts. The rubber shock-absorbing component can reduce the vibration transmitted to the auxiliary cooling fan by the machine body, which is beneficial to prolonging the life of the fan.

[0016] (3) The high-temperature heat dissipation system of the articulated dump truck of the present invention can expand the feasibility of vehicle operation in extremely high-temperature working conditions, improve customer satisfaction with the equipment, increase the benefits brought by the equipment, and safeguard the rights and interests of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall arrangement structure of the present invention; Figure 2 It is a schematic diagram of the side view structure of the main bulk water tank and the auxiliary bulk water tank; Figure 3 This is a schematic diagram of the axial structure of the main bulk water tank and the auxiliary bulk water tank; Figure 4 This is a schematic diagram of the air intake and exhaust of the side box; Figure 5 It is a schematic diagram of the wind collecting cover structure; Figure 6 This is a schematic diagram of the auxiliary cooling fan structure; Figure 7 is a schematic diagram of the auxiliary radiator structure; In the figure: 1. hood; 2. main cooling water tank; 3. engine; 4. side box; 5. auxiliary radiator; 6. frame; 7. expansion tank; 8. main cooling fan; 9. engine water outlet pipe; 10. water pump; 11. water pipe; 12. engine water inlet pipe; 13. auxiliary cooling fan; 14. cooling bracket; 15. hydraulic motor; 16. wind collecting cover; 17. hollow surface; 18. baffle; 19. rubber shock absorbing component; 20. degassing port. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0020] like Figure 1 , 2 As shown, a high-temperature heat dissipation system of an articulated dump truck includes: a hood 1, a main heat dissipation component, an engine 3, a side box 4, an auxiliary heat dissipation component, a frame 6, and an expansion tank 7. The hood 1, the engine 3, the main heat dissipation component, the side box 4, and the expansion tank 7 are all installed on the frame 6. The side box 4 has the function of shouldering the maintenance walkway. The auxiliary heat dissipation component is installed in the side box 4. The main heat dissipation component and the auxiliary heat dissipation component are connected in series and are connected to the engine 3 to jointly dissipate heat from the engine 3. A water pump 10 is provided on the engine 3.

[0021] The hood 1 is provided with vent holes, namely, air inlet holes of a main radiator arranged at the front end of the hood 1 and side holes arranged at both sides of the hood 1 for exhaust.

[0022] The main radiator is arranged on the front side of the engine 3 to dissipate heat for the engine 3. The side box body 4 and the expansion water tank 7 are respectively arranged on both sides of the frame 6. The hood 1 plays a protective and diverting role. The hood 1 is mounted on the main radiator, the engine 3, and the expansion water tank 7; the main heat dissipation component includes: a main radiator, a main cooling fan 8, an engine 3 water outlet pipe, a water pipe 11, and an engine 3 water inlet pipe. The auxiliary heat dissipation component includes: an auxiliary radiator 5, an auxiliary cooling fan 13, and a heat dissipation bracket 14. The water inlet of the water pump 10 is connected to the water outlet of the engine 3. The main radiator water inlet pipe is connected to the water outlet of the water pump 10 through the engine 3 water outlet pipe. The main radiator water outlet is connected to the auxiliary radiator 5 water inlet through the water pipe 11. The water outlet of the auxiliary radiator 5 is connected to the water inlet of the engine 3 through the engine 3 water inlet pipe.

[0023] like Figure 2 , 3 As shown, the high-temperature coolant is pumped out by the water pump 10 and flows to the main radiator along the water outlet pipe of the engine 3. The heat of the coolant in the main radiator is transferred to the air through the cooling fins, and the hot air flow is taken away by the cold air sucked in by the main cooling fan 8, and is discharged along the rear of the frame 6 and the side hole of the hood 1; the coolant cooled by the main radiator enters the auxiliary radiator 5 along the water pipe 11, and the coolant of the auxiliary radiator 5 is transferred to the air through the cooling fins, and the hot air flow is taken away by the cold air sucked in by the auxiliary cooling fan 13, and is discharged along the outer side of the frame 6; like Figure 4 , 5 As shown, a cold air slot is opened on the vertical plate of the side box body 4 away from the outer side of the frame 6, and the vertical plate has a certain angle with the forward direction of the vehicle. When the vehicle is moving, a part of the natural air intake can be utilized; the air flow direction of the auxiliary radiator 5 is side-to-side top out, that is, the cold air is taken in from the side of the side box body 4, and a raised air collecting hood 16 is provided on the box body, and the auxiliary cooling fan 13 and the support are placed and installed inside the air collecting hood 16. The side of the air collecting hood 16 away from the frame 6 is a hollow surface 17, which serves as an outlet for exhaust hot air; the side of the air collecting hood 16 facing the hood 1 is a closed baffle 18, so that the exhaust hot air will not be discharged into the hood 1, so as to avoid interfering with the hot air discharge of the main radiator.

[0024] like Figure 2 , 7 As shown, the auxiliary radiator 5 is lower than the upper water chamber of the main radiator as a whole. The auxiliary radiator 5 is tiltedly placed inside the side box 4, with the front lower and the rear higher. A degassing port 20 is provided on the higher side. When viewed from the side of the frame 6, the end of the auxiliary radiator 5 close to the head of the frame 6 is lower, and a water outlet is provided on the bottom surface of this end, and the coolant flows into the engine 3 from the water outlet; the end of the auxiliary radiator 5 close to the rear of the frame 6 is higher, and a water inlet is provided on the bottom surface of this end, and the coolant from the main radiator enters the auxiliary radiator 5 from this inlet. A degassing port 20 is provided on the top surface of this end, which is used to balance the pressure of the main radiator and the auxiliary radiator 5, to avoid deformation of the main radiator and the auxiliary radiator 5 due to negative pressure, or expansion and cracking of the pipe core of the main radiator and the auxiliary radiator 5 due to high pressure, which is beneficial to the long-term use of the main radiator and the auxiliary radiator 5.

[0025] like Figure 2 , 6As shown, the auxiliary cooling fan 13 is installed in the side box body 4 through the cooling bracket 14, so that the auxiliary cooling fan 13 is placed parallel to the plane of the auxiliary radiator 5, and a gap is provided between the end face of the auxiliary cooling fan 13 and the auxiliary radiator 5 to ensure that the airflow flowing through the cooling water tank is parallel wind rather than rotating airflow; the auxiliary cooling fan 13 is driven by a hydraulic motor 15, and the hydraulic motor 15 is fixed on the cooling bracket 14; the cooling bracket 14 is made of steel pipe and flat plate welding, and can withstand the torque generated when the selected fan is operated at the limit; the cooling bracket 14 is installed on the side box body 4 by bolts, and a rubber shock-absorbing component 19 is provided between the cooling bracket 14 and the side box body 4, which is used to reduce the vibration transmitted to the auxiliary cooling fan 13 by the body, which is beneficial to prolong the service life of the auxiliary cooling fan 13.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature heat dissipation system for an articulated dump truck, characterized in that: include: A hood, a main radiating assembly, an engine, a side box, an auxiliary radiating assembly, a vehicle frame, and an expansion water tank. The hood, engine, main radiating assembly, side box, and expansion water tank are all mounted on the vehicle frame. The side box has the function of shouldering a maintenance walkway. The auxiliary radiating assembly is mounted in the side box. The main radiating assembly and the auxiliary radiating assembly are connected in series and are connected to the engine to jointly dissipate heat from the engine. A water pump is provided on the engine.

2. The high temperature heat dissipation system for an articulated dump truck according to claim 1, characterized in that: The main radiator is arranged at the front side of the engine to dissipate heat from the engine. The side boxes and the expansion water tank are respectively arranged at both sides of the frame. The engine hood plays a protective and diverting role. The engine hood is mounted on the main radiator, the engine and the expansion water tank.

3. The high temperature heat dissipation system for an articulated dump truck according to claim 1, characterized in that: The main heat dissipation component includes: a main radiator, a main cooling fan, an engine water outlet pipe, a water pipe, and an engine water inlet pipe. The auxiliary heat dissipation component includes: an auxiliary radiator, an auxiliary cooling fan, and a cooling bracket. The water inlet of the water pump is connected to the water outlet of the engine. The main radiator water inlet pipe is connected to the water pump outlet through the engine water outlet pipe. The main radiator water outlet is connected to the auxiliary radiator water inlet through the water pipe. The auxiliary radiator water outlet is connected to the engine water inlet through the engine water inlet pipe.

4. The high temperature heat dissipation system for an articulated dump truck according to claim 3, characterized in that: A cold air slot is opened on the vertical plate of the side box body away from the outer side of the frame, and the vertical plate has a certain angle with the forward direction of the vehicle. When the vehicle is moving, a part of the natural air intake can be utilized; the air flow direction of the auxiliary radiator is side-to-side top out, that is, the cold air enters from the side of the side box body, and a raised air collecting hood is provided on the box body, and an auxiliary cooling fan and a support are placed and installed inside the air collecting hood. The side of the air collecting hood away from the frame is a hollow surface, which serves as an outlet for exhaust hot air; the side of the air collecting hood facing the hood is a closed baffle, so that the exhaust hot air will not be discharged into the hood, thereby avoiding interference with the hot air discharge of the main radiator.

5. The high temperature heat dissipation system for an articulated dump truck according to claim 3, characterized in that: The auxiliary radiator is lower than the upper water chamber of the main radiator as a whole. The auxiliary radiator is tilted and placed inside the side box, with the front lower and the rear higher. A degassing port is provided on the higher side. Viewed from the side of the frame, the end of the auxiliary radiator close to the head of the frame is lower, and a water outlet is provided on the bottom surface of this end, and the coolant flows into the engine from the water outlet; the end of the auxiliary radiator close to the rear of the frame is higher, and a water inlet is provided on the bottom surface of this end, and the coolant from the main radiator enters the auxiliary radiator from this inlet, and a degassing port is provided on the top surface of this end, which is used to balance the pressure of the main radiator and the auxiliary radiator, to avoid deformation of the main radiator and the auxiliary radiator due to negative pressure, or expansion and cracking of the pipe core of the main radiator and the auxiliary radiator due to high pressure, which is beneficial to the long-term use of the main radiator and the auxiliary radiator.

6. The high temperature heat dissipation system for an articulated dump truck according to claim 5, characterized in that: The auxiliary cooling fan is installed in the side box through a cooling bracket, so that the auxiliary cooling fan is placed parallel to the plane of the auxiliary radiator, and a gap is provided between the end face of the auxiliary cooling fan and the auxiliary radiator to ensure that the airflow flowing through the cooling water tank is parallel airflow rather than rotating airflow; the auxiliary cooling fan is driven by a hydraulic motor, and the hydraulic motor is fixed on the cooling bracket.

7. The high temperature heat dissipation system for an articulated dump truck according to claim 6, characterized in that: The heat dissipation bracket is manufactured by welding a steel pipe and a flat plate, and can withstand the torque generated when the selected fan is operated at the extreme limit.

8. The high temperature heat dissipation system for an articulated dump truck according to claim 7, characterized in that: The heat dissipation bracket is installed on the side box body by bolts. A rubber shock-absorbing component is provided between the heat dissipation bracket and the side box body. The shock absorption can reduce the vibration transmitted to the fan by the body, thereby helping to extend the life of the fan.

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