A mine dump truck auxiliary engine oil system and frame

Abstract

This utility model discloses an auxiliary oil system and chassis for a mining dump truck, belonging to the field of mining machinery technology. It includes a controller, an engine, an oil tank, and an auxiliary oil tank. The auxiliary oil tank has the same capacity as the oil tank. The oil tank and the auxiliary oil tank are connected via a first electric pump and a second electric pump. The inlet of the first electric pump is connected to the oil tank via an oil pipe, and the outlet of the first electric pump is connected to the auxiliary oil tank via an oil pipe. Similarly, the inlet of the second electric pump is connected to the auxiliary oil tank via an oil pipe, and the outlet of the second electric pump is connected to the oil tank via an oil pipe. The beneficial effects of this utility model are: by using a combination of a controller, an oil level sensor, a first electric pump, and a second electric pump, the oil in the oil tank and the auxiliary oil tank is periodically exchanged, improving the engine oil's dirt-holding capacity, extending the engine maintenance cycle, reducing downtime for mining dump trucks due to engine maintenance, and improving the uptime and productivity of mining dump trucks.

Description

Technical Field This utility model belongs to the field of mining machinery technology, and more specifically relates to an auxiliary oil system and chassis for a mining dump truck. Background Technology Mining dump trucks are the main transportation tool in open-pit mines with an annual output of over 3 million tons. Their equipment cost accounts for more than 50% of the total equipment cost in mining operations. They are characterized by short transport distances and heavy loads, working in conjunction with large electric shovels or hydraulic excavators to shuttle between mining and unloading points. Mining dump trucks operate continuously in mines 24 hours a day, making uptime and reliability their most important performance indicators. Uptime must be at least 85%. Currently, the engine maintenance cycle for mainstream mining dump trucks is generally 500 hours. Every 500 hours of operation, the engine needs to be stopped for an oil change. A single maintenance session for a large engine typically takes 8-12 hours, requiring monthly engine maintenance, which necessitates 8-12 hours of downtime and significantly impacts the uptime of mining dump trucks.

[0001] The utility model patent with patent number 202211055242.1 discloses an oil circulation and regeneration system, which realizes oil regeneration by expanding the capacity of an external oil tank and combining it with a filter unit, thus solving the above problems well. However, the system relies on the filter unit to purify the oil, and its structure is complex and the modification cost is high. Utility Model Content To solve the above problems and overcome the shortcomings of the existing technology, this utility model provides an auxiliary oil system and chassis for a mining dump truck; The first technical problem to be solved is the insufficient engine oil capacity in mining dump truck engines, which leads to short maintenance cycles and frequent downtime in existing technologies.

[0002] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows: the auxiliary oil system for mining dump trucks includes a controller, an engine, an oil tank, and an auxiliary oil tank; The auxiliary oil tank has the same capacity as the engine oil tank. The engine oil tank and the auxiliary oil tank are connected through a first electric pump and a second electric pump. The oil inlet of the first electric pump is connected to the engine oil tank through an oil pipe, and the oil outlet of the first electric pump is connected to the auxiliary oil tank through an oil pipe. The oil inlet of the second electric pump is connected to the auxiliary oil tank through an oil pipe, and the oil outlet of the second electric pump is connected to the engine oil tank through an oil pipe. The oil tank is equipped with an oil level sensor for detecting the oil level in the oil tank. The controller is electrically connected to the oil level sensor, the first electric pump, and the second electric pump. The upper end of the auxiliary oil tank is equipped with a breather for balancing the pressure and negative pressure generated between the auxiliary oil tank and the oil tank when oil is pumped in or out.

[0003] Furthermore, the oil level sensor is a float-type sensor.

[0004] Furthermore, both the first electric pump and the second electric pump are gear pumps.

[0005] Furthermore, the auxiliary oil tank and the oil tank are filled with the same brand and capacity of oil.

[0006] A mining dump truck chassis, equipped with a mining dump truck auxiliary oil system, includes a chassis body, a sub-chassis, an engine, and an auxiliary oil tank; The subframe is fixedly connected to the top of the frame body, the engine is mounted on the subframe, an oil tank is provided at the bottom of the engine, and the oil level sensor is fixedly installed on the inner wall of the oil tank by threads. The auxiliary oil tank is fixedly installed on the inside of the vehicle frame body by bolts. The first electric pump and the second electric pump are integrated and installed on the auxiliary oil tank. The auxiliary oil tank is connected to the engine oil compartment through an oil pipe.

[0007] Furthermore, the auxiliary fuel tank is provided with an auxiliary fuel tank inlet and an auxiliary fuel tank outlet, and the engine oil tank is provided with an engine oil tank outlet and an engine oil tank inlet. The inlet end of the first electric pump is connected to the engine oil tank outlet via an oil pipe, and the outlet end of the first electric pump is connected to the auxiliary fuel tank inlet via an oil pipe. The inlet end of the second electric pump is connected to the auxiliary fuel tank outlet via an oil pipe, and the outlet end of the second electric pump is connected to the engine oil tank inlet via an oil pipe.

[0008] Furthermore, the respirator is fixedly mounted on the upper end of the auxiliary fuel tank.

[0009] The beneficial effects of this utility model are: One advantage of this invention is that it sets up an auxiliary oil tank with the same capacity as the engine oil tank, and uses a combination of a controller, an oil level sensor, a first electric pump and a second electric pump to periodically exchange the engine oil between the engine oil tank and the auxiliary oil tank. This improves the engine oil's ability to hold dirt, extends the engine maintenance cycle, reduces the downtime of mining dump trucks due to engine maintenance, and improves the uptime and productivity of mining dump trucks.

[0010] One advantage of this invention is that it is equipped with a breather to balance the pressure, thereby avoiding negative or overpressure when the oil is pumped in and out, and ensuring the stability of the system operation. Attached Figure Description Appendix Figure 1 This is a schematic diagram of the auxiliary oil system for a mining dump truck according to this utility model. Appendix Figure 2 This is a three-dimensional structural diagram of the frame of the mining dump truck of this utility model; Appendix Figure 3 This is a schematic diagram of the bottom three-dimensional structure of the frame of the mining dump truck of this utility model; Appendix Figure 4This is a schematic diagram of the engine assembly structure of the mining dump truck frame of this utility model; Appendix Figure 5 This is a schematic diagram of the assembly structure of the auxiliary fuel tank on the chassis of the mining dump truck of this utility model; Appendix Figure 6 This is a front view structural diagram of the auxiliary fuel tank of the mining dump truck frame of this utility model; Appendix Figure 7 This is a side view of the auxiliary fuel tank structure of the mining dump truck frame of this utility model; in the attached drawing: 1. Controller; 2. Oil tank; 21. Oil tank outlet; 22. Oil tank inlet; 3. Auxiliary fuel tank; 31. Auxiliary fuel tank inlet; 32. Auxiliary fuel tank outlet; 4. First electric pump; 5. Second electric pump; 6. Oil level sensor; 7. Breather; 8. Oil pipe; 101. Chassis body; 102. Subframe; 103. Engine. Adapter connector. Detailed Implementation In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "rear," "lower left," "upper right," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0011] The specific embodiment of this utility model is as follows: The auxiliary oil system for a mining dump truck includes a controller 1, an engine 103, an oil tank 2, and an auxiliary oil tank 3. As a preferred embodiment of this utility model: The auxiliary oil tank 3 has the same capacity as the oil tank 2, and the auxiliary oil tank 3 and the oil tank 2 are filled with the same brand and capacity of oil; the oil tank 2 is equipped with an oil level sensor 6 for detecting the oil level in the oil tank 2, and the oil level sensor 6 is a float-type sensor. The oil tank 2 and the auxiliary oil tank 3 are connected by a first electric pump 4 and a second electric pump 5. Preferably, the first electric pump 4 and the second electric pump 5 are both gear pumps. The oil inlet of the first electric pump 4 is connected to the oil tank 2 through an oil pipe 8, and the oil outlet of the first electric pump 4 is connected to the auxiliary oil tank 3 through an oil pipe 8. The oil inlet of the second electric pump 5 is connected to the auxiliary oil tank 3 through an oil pipe 8, and the oil outlet of the second electric pump 5 is connected to the oil tank 2 through an oil pipe 8. The controller 1 is electrically connected to the oil level sensor 6, the first electric pump 4, and the second electric pump 5 respectively. The controller 1 is a PLC controller. The top of the auxiliary oil tank 3 is equipped with a breather 7 for balancing the pressure and negative pressure generated between the auxiliary oil tank 3 and the oil tank 2 when the oil is pumped in or out. The breather 7 is a mining-grade waterproof and dustproof hydraulic breather.

[0012] As an embodiment of this utility model: A mining dump truck frame is equipped with a mining dump truck auxiliary oil system, including a frame body 101, a subframe 102, an engine 103, and an auxiliary oil tank 3; the subframe 102 is fixedly connected to the top of the frame body 101, the engine 103 is mounted on the subframe 102, the bottom of the engine 103 is provided with an oil tank 2, and an oil level sensor 6 is fixedly installed on the inner top wall of the oil tank 2 by threads. The oil level sensor 6 is a float-type sensor, and the installation position of the oil level sensor 6 is higher than the oil pump suction port of the engine 103.

[0013] The auxiliary fuel tank 3 adopts a flat rectangular structure and has the same volume as the oil tank. The auxiliary fuel tank 3 is fixedly installed on the inner side of the vehicle frame body 101 by bolts. Fixed brackets are provided on the left and right side walls of the auxiliary fuel tank 3 located at the edge of the auxiliary fuel tank 3, and the fixed brackets are fixedly connected to the inner wall of the vehicle frame body 101 by bolts. The first electric pump 4 and the second electric pump 5 are integrated and installed on the auxiliary oil tank 3. The auxiliary oil tank 3 is provided with an auxiliary oil tank inlet 31 and an auxiliary oil tank outlet 32. The auxiliary oil tank inlet 31 and the auxiliary oil tank outlet 32 ​​are respectively connected to the oil compartment 2 of the engine 103 through oil pipes 8. The oil compartment 2 has an oil compartment outlet 21 and an oil compartment inlet 22. The oil inlet of the first electric pump 4 is connected to the oil outlet 21 of the oil tank via an oil pipe 8, and the oil outlet of the first electric pump 4 is connected to the oil inlet 31 of the auxiliary oil tank via an oil pipe 8; the oil inlet of the second electric pump 5 is connected to the oil outlet 32 ​​of the auxiliary oil tank via an oil pipe 8, and the oil outlet of the second electric pump 5 is connected to the oil inlet 22 of the oil tank via an oil pipe 8. The oil pipe 8 is connected to the oil outlet 21 and the oil inlet 22 of the oil tank through an inlet flange and an outlet flange, respectively; the oil outlet 21 and the oil inlet 22 of the oil tank are both threaded interfaces, and the inlet flange and the outlet flange are detachably connected to the oil inlet 22 and the oil outlet 21 of the oil tank through threaded interfaces, respectively.

[0014] When the auxiliary oil tank 3 is not installed, the threaded interfaces of the oil tank outlet 21 and the oil tank inlet 22 are respectively sealed with plugs.

[0015] The upper end of the auxiliary oil tank 3 is fixedly equipped with a breather 7 for balancing the pressure and negative pressure generated between the auxiliary oil tank 3 and the oil tank 2 when the oil is pumped in or out. The breather 7 is fixedly connected to the auxiliary oil tank 3 by welding or bolting.

[0016] It should be noted that this utility model relates to an auxiliary oil system and chassis for a mining dump truck. In specific operation... (1) Initial state: The oil tank 2 and the auxiliary oil tank 3 have the same capacity and are filled with the same brand and capacity of oil. The oil level sensor 6 is fixed in the oil tank 2 to detect the oil level in the oil tank 2 in real time. The H position and L position are preset manually. The H position is the upper limit oil level, preferably 10cm away from the top of the oil tank 2. The L position is the safe oil level, preferably 5cm above the oil pump suction port of the engine 103. The first electric pump 4 and the second electric pump 5 are connected to the conversion joints of the oil tank inlet 22 and the oil tank outlet 21, as well as the auxiliary oil tank inlet 31 and the auxiliary oil tank outlet 32 ​​through the oil pipe 8 to form a closed oil circuit. The breather 7 is installed on the top of the auxiliary oil tank 3 and is open to the atmosphere.

[0017] (2) Pumping of engine oil from oil tank 2 to auxiliary oil tank 3: The exchange cycle is preset manually in the controller 1, preferably triggered by 250 hours to exchange the engine oil periodically. After the exchange cycle is reached, the controller 1 outputs a start signal to the first electric pump 4 through the wire. The first electric pump 4 starts and pumps the engine oil in the oil tank 2 into the auxiliary oil tank 3 through the oil pipe 8, the oil tank outlet 21, the first electric pump 4, and the auxiliary oil tank inlet 31. As the engine oil flows out, the oil level in the oil tank 2 gradually decreases until the oil level sensor 6 detects the L position. The sensor transmits a signal to the controller 1, and the controller 1 shuts off the first electric pump 4 through the wire, and the pumping stops.

[0018] (3) Pumping of engine oil from auxiliary oil tank 3 to oil tank 2: After the first electric pump 4 stops, the controller 1 outputs a start signal to the second electric pump 5 through the wire. The second electric pump 5 starts and pumps the engine oil in the auxiliary oil tank 3 back to the oil tank 2 through the oil pipe 8, the auxiliary oil tank outlet 32, the second electric pump 5, and the oil tank inlet 22. As the engine oil flows in, the oil level in the oil tank 2 gradually rises. When the oil level sensor 6 detects the H level, the sensor transmits a signal to the controller 1. The controller 1 shuts off the second electric pump 5 through the wire, and the pumping stops, completing one oil cycle.

[0019] (4) Pressure balancing mechanism: When the first electric pump 4 pumps oil, the oil tank 2 is under negative pressure due to the outflow of oil, while the auxiliary oil tank 3 is under positive pressure due to the inflow of oil. When the second electric pump 5 pumps, the auxiliary oil tank 3 is under negative pressure due to the outflow of oil, while the oil tank 2 is under positive pressure due to the inflow of oil. At this time, the breather 7 on the top of the auxiliary oil tank 3 is connected to the atmosphere to balance the pressure on both sides in real time. Air is drawn in when there is negative pressure and air is discharged when there is positive pressure, so as to avoid the oil circuit being blocked or damaged due to abnormal pressure.

[0020] With this structure, the engine oil undergoes a full exchange periodically between the oil tank 2 and the auxiliary oil tank 3, effectively doubling the total oil capacity. This physical design dilutes impurities in the engine oil, directly improving its dirt-holding capacity and thus extending the engine 103 maintenance cycle, reducing downtime for mining dump trucks due to engine 103 maintenance.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary oil system for a mining dump truck, comprising a controller (1), an engine (103), an oil tank (2), and an auxiliary oil tank (3); characterized in that: The capacity of the auxiliary oil tank (3) is the same as that of the oil tank (2). The oil tank (2) and the auxiliary oil tank (3) are connected by a first electric pump (4) and a second electric pump (5). The oil inlet of the first electric pump (4) is connected to the oil tank (2) through an oil pipe (8), and the oil outlet of the first electric pump (4) is connected to the auxiliary oil tank (3) through an oil pipe (8). The oil inlet of the second electric pump (5) is connected to the auxiliary oil tank (3) through an oil pipe (8), and the oil outlet of the second electric pump (5) is connected to the oil tank (2) through an oil pipe (8). The oil tank (2) is equipped with an oil level sensor (6) for detecting the oil level in the oil tank (2). The controller (1) is electrically connected to the oil level sensor (6), the first electric pump (4), and the second electric pump (5). The upper end of the auxiliary oil tank (3) is equipped with a breather (7) for balancing the pressure and negative pressure generated between the auxiliary oil tank (3) and the oil tank (2) when the oil is pumped in or out.

2. The auxiliary oil system for a mining dump truck according to claim 1, characterized in that... The oil level sensor (6) is a float-type sensor.

3. A mine dump truck auxiliary engine oil system as claimed in claim 1, characterized in that Both the first electric pump (4) and the second electric pump (5) are gear pumps.

4. A mine dump truck auxiliary engine oil system as claimed in claim 1, characterized in that The auxiliary oil tank (3) and the oil tank (2) are filled with the same brand and capacity of oil.

5. A mining dump truck frame, equipped with an auxiliary oil system for a mining dump truck as described in any one of claims 1-4, characterized in that, It includes the frame body (101), subframe (102), engine (103) and auxiliary fuel tank (3); The subframe (102) is fixedly connected to the top of the frame body (101), the engine (103) is mounted on the subframe (102), the engine (103) has an oil tank (2) at the bottom, and the oil level sensor (6) is fixedly mounted to the top wall inside the oil tank (2) by threads. The auxiliary oil tank (3) is fixedly installed on the inner side of the frame body (101) by bolts. The first electric pump (4) and the second electric pump (5) are integrated and installed on the auxiliary oil tank (3). The auxiliary oil tank (3) is connected to the oil tank (2) of the engine (103) through an oil pipe (8).

6. A mining dump truck frame according to claim 5, characterized in that... The auxiliary oil tank (3) is provided with an auxiliary oil tank inlet (31) and an auxiliary oil tank outlet (32). The oil tank (2) is provided with an oil tank outlet (21) and an oil tank inlet (22). The oil inlet of the first electric pump (4) is connected to the oil tank outlet (21) through an oil pipe (8), and the oil outlet of the first electric pump (4) is connected to the auxiliary oil tank inlet (31) through an oil pipe (8). The oil inlet of the second electric pump (5) is connected to the auxiliary oil tank outlet (32) through an oil pipe (8), and the oil outlet of the second electric pump (5) is connected to the oil tank inlet (22) through an oil pipe (8).

7. A mine dump truck frame as claimed in claim 5, characterised in that The respirator (7) is fixedly installed on the upper end of the auxiliary fuel tank (3).

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