Transfer case lubricating system and hinge type dumper

Abstract

The utility model discloses a transfer case lubricating system and a hinge type dumper, and belongs to the technical field of transfer case lubrication, the transfer case lubricating system comprises a first liquid collecting tank, a second liquid collecting tank, a third liquid collecting tank and a fourth liquid collecting tank, the second liquid collecting tank is arranged on the inner wall of the transfer case; the third liquid collecting tank is arranged on the inner wall of the transfer case; the internal liquid channel is arranged on the inner wall of the transfer case; the storage cavity is formed in the inner wall of the transfer case and connected with the third liquid collecting tank; a backflow pipeline, a lubricating liquid driving device and a lubricating liquid cooling mechanism; the lubricating liquid driving device is provided with a liquid inlet and a liquid outlet, the liquid inlet is provided with a check valve, and the liquid outlet is provided with an overflow valve. The internal liquid channels connected with the input shaft assembly, the intermediate shaft assembly and the output shaft assembly are arranged in the transfer case, the driving of the lubricating liquid is carried out by combining gravity and external pressure, and the cooling liquid supplementing circulation of the lubricating liquid is formed through the lubricating liquid cooling mechanism, the check valve and the overflow valve.

Description

Technical Field

[0001] The utility model relates to a transfer case lubrication system and an articulated dump truck, belonging to the technical field of transfer case lubrication. Background Art

[0002] Articulated dump trucks are often used to transport mining materials. They work in harsh environments with rough roads and even require long periods of heavy-load downhill or uphill travel, which places high demands on the stability of the vehicle. The lubricating oil temperature of the transfer case is crucial to the stability of the transfer case. Most transfer cases currently used on the market use forced lubrication, which has high space requirements. Articulated dump trucks have a relatively compact structure and small internal space, so it is not easy to cool the lubricating fluid and it is difficult to lay out the pipelines. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and to provide a transfer case lubrication system having a small internal fluid passage space and a lubricating fluid that can be quickly cooled and replenished, thereby solving the problem that the current articulated dump truck has a relatively compact structure, a small internal space, the lubricating fluid is not easy to cool down, and the pipeline layout is difficult.

[0004] In order to achieve the above purpose / solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0005] On one hand, the utility model provides a transfer case lubrication system, the transfer case includes an input shaft assembly, an intermediate shaft assembly and an output shaft assembly, including: a first liquid collecting tank, the first liquid collecting tank is arranged on the inner wall of the transfer case, corresponding to the input shaft gear; a second liquid collecting tank, the second liquid collecting tank is arranged on the inner wall of the transfer case, corresponding to the intermediate shaft gear;

[0006] A third liquid collecting tank, the third liquid collecting tank is arranged on the inner wall of the transfer case and corresponds to the output shaft gear;

[0007] An internal fluid channel, the internal fluid channel is arranged on the inner wall of the transfer case and is connected with the first fluid collecting tank, the second fluid collecting tank and the third fluid collecting tank;

[0008] A storage chamber, the storage chamber is arranged on the inner wall of the transfer case and is connected to the third liquid collecting tank;

[0009] Return line, lubricating fluid drive device and lubricating fluid cooling mechanism;

[0010] The lubricating liquid driving device is provided with a liquid inlet and a liquid outlet, the liquid inlet is provided with a check valve, and the liquid outlet is provided with a relief valve;

[0011] One end of the reflux pipeline is connected to the storage chamber, and the other end is connected to the liquid inlet;

[0012] The lubricating liquid cooling mechanism includes a first cooling pipeline, a second cooling pipeline and a cold row; one end of the first cooling pipeline is connected to the liquid inlet, and the other end is connected to the cold row; one end of the second cooling pipeline is connected to the cold row, and the other end is connected to the liquid outlet.

[0013] Optionally, the liquid inlet includes a first liquid inlet and a second liquid inlet, the first liquid inlet is respectively connected to the liquid outlet and the second liquid inlet, and the check valve is installed at the second liquid inlet; the first liquid inlet is connected to an end of the reflux pipeline away from the storage chamber, and the second liquid inlet is connected to an end of the first cooling pipeline away from the radiator.

[0014] Optionally, the second cooling pipeline includes a cooling branch A, a cooling branch B and an oil filter; one end of the cooling branch A is connected to the radiator, and the other end is connected to the oil inlet of the oil filter; one end of the cooling branch B is connected to the oil outlet of the oil filter, and the other end is connected to the liquid outlet.

[0015] Optionally, the opening pressure of the overflow valve is P1, P1≥4 bar; the opening pressure of the check valve is P2, 0.5 bar≤P2<4 bar.

[0016] Optionally, the internal liquid channel includes an input liquid channel, an intermediate liquid channel and an output liquid channel; one end of the input liquid channel is connected to the liquid outlet, and the other end is connected to the first liquid collecting tank; one end of the intermediate liquid channel is connected to the first liquid collecting tank, and the other end is connected to the second liquid collecting tank; one end of the output liquid channel is connected to the second liquid collecting tank, and the other end is connected to the third liquid collecting tank.

[0017] Optionally, an oil baffle plate is provided on the side wall of the storage cavity to reduce oil stirring loss of the output shaft gear; the oil baffle plate is provided with a plurality of evenly distributed liquid guide holes for the lubricating liquid gathered in the storage cavity to enter the oil baffle plate to soak the output shaft gear.

[0018] Optionally, a filter screen is provided at the connection between the reflux pipeline and the storage chamber to filter impurities deposited in the storage chamber.

[0019] Optionally, the lubricating fluid driving device is a gear oil pump.

[0020] On the other hand, the utility model provides an articulated dump truck, comprising the transfer case lubrication system as described above.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model arranges an internal liquid channel connecting the input shaft assembly, the intermediate shaft assembly and the output shaft assembly inside the transfer case, utilizes the combination of gravity and external pressure to drive the lubricating fluid, and forms a cooling and refilling circulation of the lubricating fluid through a lubricating fluid cooling mechanism, a check valve and an overflow valve, thereby solving the problems of the current articulated dump truck having a relatively compact structure, a small internal space, the lubricating fluid being difficult to cool down and the difficulty in laying out the pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a transfer case lubrication system provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a lubricating liquid cooling mechanism of a transfer case lubrication system provided by an embodiment of the utility model;

[0025] Figure 3 The utility model is a schematic structural diagram of an oil baffle plate of a transfer case lubrication system provided in an embodiment of the utility model.

[0026] In the figure: 1. first collecting tank; 2. second collecting tank; 3. third collecting tank; 401. input liquid channel; 402. intermediate liquid channel; 403. output liquid channel; 501. first cooling pipeline; 502. second cooling pipeline; 5021. cooling branch pipe A; 5022. cooling branch pipe B; 5023. oil filter; 503. radiator; 6. check valve; 7. overflow valve; 8. liquid outlet; 901. first liquid inlet; 902. second liquid inlet; 10. oil baffle; 11. filter screen; 12. storage chamber; 13. return pipeline; 14. lubricating liquid drive device. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example 1

[0030] like Figure 1 As shown, a transfer case lubrication system, wherein the transfer case includes an input shaft assembly, an intermediate shaft assembly and an output shaft assembly, and the input shaft assembly, the intermediate shaft assembly and the output shaft assembly are arranged in sequence from top to bottom; the transfer case lubrication system includes: a first liquid collecting tank 1, a second liquid collecting tank 2, a third liquid collecting tank 3, an internal liquid channel, a storage chamber 12, a return pipeline 13, a lubricating liquid driving device 14 and a lubricating liquid cooling mechanism, specifically:

[0031] The first collecting tank 1 is provided on the inner wall of the transfer case, corresponding to the input shaft gear; the second collecting tank 2 is provided on the inner wall of the transfer case, corresponding to the intermediate shaft gear; the third collecting tank 3 is provided on the inner wall of the transfer case, corresponding to the output shaft gear; the internal liquid channel includes an input liquid channel 401, an intermediate liquid channel 402 and an output liquid channel 403; one end of the input liquid channel 401 is connected to the liquid outlet 8, and the other end is connected to the first collecting tank 1; one end of the intermediate liquid channel 402 is connected to the first collecting tank 1, and the other end is connected to the second collecting tank 2; one end of the output liquid channel 403 is connected to the second collecting tank 2, and the other end is connected to the third collecting tank 3; the storage chamber 12 is provided at the bottom of the transfer case, and is connected to the third collecting tank 3;

[0032] like Figure 2 As shown, the lubricating liquid cooling mechanism includes a first cooling pipeline 501, a second cooling pipeline 502 and a cold row 503, the lubricating liquid driving device 14 is provided with a liquid inlet and a liquid outlet 8, the liquid inlet is provided with a check valve 6, and the liquid outlet 8 is provided with a relief valve 7; one end of the return pipeline 13 is connected to the storage chamber 12, and the other end is connected to the liquid inlet; one end of the first cooling pipeline 501 is connected to the liquid inlet, and the other end is connected to the cold row 503; one end of the second cooling pipeline 502 is connected to the cold row 503, and the other end is connected to the liquid outlet 8; specifically:

[0033] In this embodiment, the lubricating liquid driving device 14 is a gear oil pump, the opening pressure of the overflow valve 7 is P1, P1 ≥ 4 bar, and the model of the overflow valve 7 is CVB0.G12.0B.000; the opening pressure of the check valve 6 is P2, 0.5 bar ≤ P2 < 4 bar, and the model of the check valve 6 is CVD0.G38.0N.000;

[0034] The liquid inlet includes a first liquid inlet 901 and a second liquid inlet 902. The first liquid inlet 901 is connected to the liquid outlet 8 and the second liquid inlet 902 respectively. The check valve 6 is installed at the second liquid inlet 902. The first liquid inlet 901 is connected to an end of the reflux pipeline 13 away from the storage chamber 12, and the second liquid inlet 902 is connected to an end of the first cooling pipeline 501 away from the cold row 503.

[0035] In order to reduce impurities entering the transfer case, the second cooling circuit 502 includes a cooling branch A5021, a cooling branch B5022 and an oil filter 5023; one end of the cooling branch A5021 is connected to the cold row 503, and the other end is connected to the oil inlet of the oil filter 5023; one end of the cooling branch B5022 is connected to the oil outlet of the oil filter 5023, and the other end is connected to the liquid outlet 8.

[0036] When the lubricating liquid pressure P≥4bar, the overflow valve 7 opens, and the lubricating liquid collected in the storage chamber 12 at the bottom of the transfer case flows from the first liquid inlet 901 to the top of the transfer case through the reflux pipe, and enters the first collecting tank 1 through the input liquid channel 401 from the liquid outlet 8. Under the action of the lubricating liquid driving device 14, the lubricating liquid is sprayed on the gear of the input shaft assembly. Since the gear rotates at a high speed, the splashed lubricating liquid is collected by the first collecting tank 1 and gathered at the bottom of the first collecting tank 1. The lubricating liquid gathered by gravity drips onto the gear of the intermediate shaft assembly through the intermediate liquid channel 402. The splashed lubricating liquid is collected by the second collecting tank 2 and gathered at the bottom of the second collecting tank 2. The lubricating liquid gathered by gravity drips onto the gear of the output shaft assembly through the output liquid channel 403. The splashed lubricating liquid is collected by the third collecting tank 3 and gathered in the storage chamber 12.

[0037] When the lubricating fluid pressure P is in the range of 0.5bar≤P2<4bar, the check valve 6 opens, and the lubricating fluid passes through the check valve 6 from the second liquid inlet 902 through the first cooling pipeline 501 into the cold discharge 503, and then enters the oil filter 5023 through the cooling branch A5021 of the second cooling pipeline, and returns to the top of the transfer case through the cooling branch B5022, and enters the cold discharge 503 through the first cooling pipeline 501 from the second liquid inlet 902 through the check valve 6, thereby realizing cooling cycle fluid replenishment.

[0038] like Figure 3 As shown, in order to reduce the oil stirring loss of the output shaft gear, an oil baffle plate 10 is provided on the side wall of the storage chamber 12, and a plurality of evenly distributed liquid guide holes are provided on the oil baffle plate 10. The lubricating liquid gathered in the storage chamber 12 can enter the oil baffle plate 10 through the liquid guide holes to soak the output shaft gear.

[0039] In order to filter impurities deposited in the storage chamber 12 , a filter screen 11 is installed at the connection between the return pipe 13 and the storage chamber 12 .

[0040] How it works

[0041] When the lubricating liquid pressure P=P1, the overflow valve 7 opens, and the lubricating liquid collected in the storage chamber 12 at the bottom of the transfer case flows from the first liquid inlet 901 to the top of the transfer case through the return pipe, and enters the first liquid collecting tank 1 through the liquid outlet 8 through the input liquid channel 401. The lubricating liquid sprays on the gears of the input shaft assembly and gathers at the bottom of the first liquid collecting tank 1. The lubricating liquid drips on the gears of the intermediate shaft assembly through the intermediate liquid channel 402 and gathers at the bottom of the second liquid collecting tank 2. The lubricating liquid drips on the gears of the output shaft assembly through the output liquid channel 403 and gathers in the storage chamber 12.

[0042] When the lubricating fluid pressure P=P2, the check valve 6 opens, and the lubricating fluid passes through the check valve 6 from the second liquid inlet 902 through the first cooling pipeline 501 into the cold row 503 for cooling, and then enters the oil filter 5023 through the cooling branch A5021 of the second cooling pipeline, and returns to the top of the transfer case through the cooling branch B5022, and continues to enter the cold row 503 through the check valve 6 from the second liquid inlet 902 through the first cooling pipeline 501. Example 2

[0043] An articulated dump truck comprises the transfer case lubrication system as described above.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A transfer case lubrication system, the transfer case comprising an input shaft assembly, an intermediate shaft assembly and an output shaft assembly, characterized in that: include: A first liquid collecting tank, the first liquid collecting tank is arranged on the inner wall of the transfer case and corresponds to the input shaft gear; a second liquid collecting tank, the second liquid collecting tank being arranged on the inner wall of the transfer case and corresponding to the intermediate shaft gear; A third liquid collecting tank, the third liquid collecting tank is arranged on the inner wall of the transfer case and corresponds to the output shaft gear; An internal fluid channel, the internal fluid channel is arranged on the inner wall of the transfer case and is connected with the first fluid collecting tank, the second fluid collecting tank and the third fluid collecting tank; A storage chamber, the storage chamber is arranged on the inner wall of the transfer case and is connected to the third liquid collecting tank; Return line, lubricating fluid drive device and lubricating fluid cooling mechanism; The lubricating liquid driving device is provided with a liquid inlet and a liquid outlet, the liquid inlet is provided with a check valve, and the liquid outlet is provided with a relief valve; One end of the reflux pipeline is connected to the storage chamber, and the other end is connected to the liquid inlet; The lubricating liquid cooling mechanism includes a first cooling pipeline, a second cooling pipeline and a cold row; one end of the first cooling pipeline is connected to the liquid inlet, and the other end is connected to the cold row; one end of the second cooling pipeline is connected to the cold row, and the other end is connected to the liquid outlet.

2. The transfer case lubrication system according to claim 1, characterized in that: The liquid inlet includes a first liquid inlet and a second liquid inlet, the first liquid inlet is respectively connected to the liquid outlet and the second liquid inlet, and the check valve is installed at the second liquid inlet; the first liquid inlet is connected to an end of the reflux pipeline away from the storage chamber, and the second liquid inlet is connected to an end of the first cooling pipeline away from the radiator.

3. The transfer case lubrication system according to claim 1, characterized in that: The second cooling pipeline includes a cooling branch pipe A, a cooling branch pipe B and an oil filter; one end of the cooling branch pipe A is connected to the radiator, and the other end is connected to the oil inlet of the oil filter; one end of the cooling branch pipe B is connected to the oil outlet of the oil filter, and the other end is connected to the liquid outlet.

4. The transfer case lubrication system according to claim 1, characterized in that: The opening pressure of the overflow valve is P1, P1≥4bar; the opening pressure of the check valve is P2, 0.5bar≤P2<4bar.

5. The transfer case lubrication system according to claim 1, characterized in that: The internal liquid channel includes an input liquid channel, an intermediate liquid channel and an output liquid channel; one end of the input liquid channel is connected to the liquid outlet, and the other end is connected to the first liquid collecting tank; one end of the intermediate liquid channel is connected to the first liquid collecting tank, and the other end is connected to the second liquid collecting tank; one end of the output liquid channel is connected to the second liquid collecting tank, and the other end is connected to the third liquid collecting tank.

6. The transfer case lubrication system according to claim 1, characterized in that: An oil baffle is provided on the side wall of the storage cavity to reduce the oil stirring loss of the output shaft gear; a plurality of evenly distributed liquid guide holes are provided on the oil baffle to allow the lubricating liquid gathered in the storage cavity to enter the oil baffle and soak the output shaft gear.

7. The transfer case lubrication system according to claim 1, characterized in that: A filter screen is provided at the connection between the reflux pipeline and the storage cavity, which is used to filter impurities deposited in the storage cavity.

8. The transfer case lubrication system according to claim 1, characterized in that: The lubricating fluid driving device is a gear oil pump.

9. An articulated dump truck, characterized in that: It comprises a transfer case lubrication system as claimed in any one of claims 1 to 8.

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