A gear system with forced lubrication function

Abstract

This utility model discloses a gear system with forced lubrication function, including a first PTO, a second PTO, a water pump, a crankshaft, a first idler gear, and a second idler gear. The first PTO, second PTO, water pump, and crankshaft are respectively equipped with a first PTO gear, a second PTO gear, a water pump gear, and a crankshaft gear. The system is characterized by further including a forced lubrication oil circuit, which includes an oil tap, a first oil pipe, and a second oil pipe. The oil tap has a first connector and a second connector. One end of the first oil pipe is connected to the first connector, and the other end is connected to the second PTO. The first PTO is also connected to the middle section of the first oil pipe. The second oil pipe is connected to the second connector at one end, and the other end extends to the water pump to lubricate the water pump bearing. This utility model has advantages such as compact structure and improved service life.

Description

Technical Field

[0001] This utility model relates to the field of engine gear system technology, and in particular to a gear system with forced lubrication function. Background Technology

[0002] PTO (Power Take-Off) is a power output mechanism where the driven gear meshes with the engine's driving gear. The driven gear and shaft assembly are connected via external splines and internal splines on the transmission sleeve. As the driven gear rotates, it drives the transmission sleeve, thus outputting power. It is used to control stepper motors or servo motors, enabling precise position, torque, and speed control in automation applications. In existing off-road gear train structures, the output torque of PTOs is increasingly large, and conventional lubrication systems are insufficient, leading to accelerated wear on engine hydraulic pump gears, idler gears, water pumps, etc., thus affecting the service life of moving parts.

[0003] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0004] The main purpose of this utility model is to propose a gear system with forced lubrication function, which improves the service life of moving parts by adding lubrication pipelines to force lubricate the PTO and water pump bearings.

[0005] Therefore, this utility model proposes a gear system with forced lubrication function.

[0006] Preferably, the present invention may also have the following technical features:

[0007] A gear system with forced lubrication function includes a first PTO, a second PTO, a water pump, a crankshaft, a first idler gear, and a second idler gear. The first PTO, the second PTO, the water pump, and the crankshaft are respectively equipped with a first PTO gear, a second PTO gear, a water pump gear, and a crankshaft gear. The system also includes a forced lubrication oil circuit, which includes an oil tap, a first oil pipe, and a second oil pipe. The oil tap has a first connector and a second connector. One end of the first oil pipe is connected to the first connector, and the other end is connected to the second PTO. The first PTO is also connected in the middle. The first PTO and the second PTO are connected to each other. One end of the second oil pipe is connected to the second connector, and the other end extends to the water pump to lubricate the water pump bearing.

[0008] Furthermore, the oil tap includes a hinge bolt and an oil pipe ball head. The threaded portion of the hinge bolt has a T-shaped cavity. The oil pipe ball head has a central through hole in the middle, an annular groove on the inner side of the central through hole, and a first connector and a second connector on the outer side of the oil pipe ball head. The hinge bolt is assembled in the central through hole, and the T-shaped cavity communicates with the annular groove.

[0009] Furthermore, the oil nozzle draws oil from the oil passage of the distribution body.

[0010] Furthermore, a first oil passage is formed on the housing of the first PTO, one end of the first oil passage is connected to the bearing mounting hole of the first PTO, and the other end extends to the housing of the first PTO and is equipped with a second oil tap connected to the first oil pipe.

[0011] Furthermore, the housing of the second PTO is provided with a second oil passage; one end of the second oil passage is connected to the bearing mounting hole of the second PTO, and the other end is equipped with a third oil tap connected to the first oil pipe.

[0012] Furthermore, the water pump housing has a third oil passage, one end of which is connected to the bearing mounting hole of the water pump housing, and the other end is equipped with a fourth oil tap that connects to the second oil pipe.

[0013] Furthermore, the first idler gear and the second idler gear are respectively mounted on the engine via rolling bearings.

[0014] Furthermore, the first idler gear and the second idler gear are respectively disposed on the left and right sides of the crankshaft gear; wherein, the first idler gear meshes with the upper left of the crankshaft gear, with the first PTO gear meshing with the upper left and the second PTO gear meshing with the lower left.

[0015] Furthermore, it also includes a generator, which is mounted on the lower left of the second PTO via a bracket. The second PTO gear also integrates a pulley, and the generator is connected to the pulley of the second PTO gear via a belt.

[0016] Furthermore, the second idler gear meshes with the crankshaft gear to the upper right, and the water pump gear meshes with the crankshaft gear to the upper right.

[0017] The beneficial effects of this invention compared to existing technologies include: using hinged bolts to draw oil from the distribution body, and the oil lubricating the first PTO, second PTO, and water pump respectively through the first and second oil pipes, ensuring sufficient lubrication of the gears and bearings of the first and second PTOs, as well as the water pump bearing, thereby improving the service life of the gear train. The idler gear shaft of the entire machine uses a rolling bearing solution. Compared to the existing sliding bearing solution, rolling bearings have higher impact resistance and are more suitable for working conditions such as excavators or mining trucks that frequently experience impacts from gear changes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a partial schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the oil pipe ball head structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the hinge bolt structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the first oil passage arrangement of this utility model. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0024] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0025] like Figures 1-2 The gear system shown includes a first PTO, a second PTO12, a water pump 3, a crankshaft, a first idler gear 13, and a second idler gear 2. The first PTO, the second PTO12, the water pump 3, and the crankshaft are respectively equipped with a first PTO gear 9, a second PTO gear, a water pump gear, and a crankshaft gear 1. The system also includes a forced lubrication oil circuit for lubricating the first PTO, the second PTO12, and the water pump 3.

[0026] Combination Figures 3-4 The forced lubrication circuit includes an oil tap 7, a first oil pipe 8, and a second oil pipe 4. The oil tap 7 is an existing parts assembly, comprising a hinge bolt 75 and an oil pipe ball head 72. The oil pipe ball head 72 has a central through hole in its middle, and an annular groove 71 is provided on the inner side of the central through hole. A first connector 73 and a second connector 74 communicating with the annular groove 71 are also provided on its outer side. The screw portion of the hinge bolt 75 has a T-shaped cavity 76, so that when the hinge bolt 75 and the oil pipe ball head 72 are used together, the orientation of the first connector 73 and the second connector 74 can be adjusted by rotating the oil pipe ball head 72. Then, the hinge bolt 75 is used to press the oil pipe ball head 72 onto the distribution body 5, and one end of the T-shaped cavity 76 communicates with the oil passage of the distribution body to draw oil, and the other end communicates with the annular groove.

[0027] Thus, the oil in the oil passage of the distributor 5 is led to the first connector 73 and the second connector 74 through the oil tap 7. The distributor 5 is a conventional structure, such as the distributor structure disclosed in existing patent document CN110056407B. The distributor 5 is equipped with an oil cooler and also has an oil inlet pipe 61, an oil outlet pipe B6, and an oil outlet pipe A. The oil pump pumps the oil from the oil pan to the oil inlet pipe of the distributor 5. The oil enters the oil passage inlet of the oil cooler from the oil inlet pipe 61 and then enters the oil outlet pipe A of the distributor 5 from the oil passage outlet of the oil cooler. The other end of the oil outlet pipe A is connected to the inlet of the oil filter, and the outlet of the oil filter is connected to the oil outlet pipe B6. The oil outlet pipe B6 distributes the oil to the moving parts of the engine through the lubrication oil passage. In this embodiment, the oil tap 7 takes oil from the oil outlet pipe B6 of the distributor 5, that is, the oil tap 7 is installed in a screw hole on the distributor 5, connecting the oil tap 7 and the oil outlet pipe B6.

[0028] One end of the first oil pipe 8 is connected to the first connector 73, the other end is connected to the second PTO 12, and the middle part is also connected to the first PTO. The oil pipe 8 delivers the oil to the first PTO and the second PTO 12 to provide forced lubrication for the bearings of the first PTO and the second PTO 12.

[0029] Combination Figure 5 A first oil passage 14 is formed on the housing of the first PTO. The housing of the first PTO has mounting holes for assembling bearings 18. One end of the first oil passage 14 is connected to the mounting holes, and the other end extends to the outer shell of the first PTO and is connected to a first oil pipe 8 via a second oil tap 15. Oil from the first oil pipe 8 enters the first oil passage 14 through the second oil tap 15 to lubricate the bearings 18 of the first PTO. Similarly, the housing of the second PTO 18 has a second oil passage for lubricating the bearings of the second PTO. One end of the second oil passage is connected to the mounting holes of the second PTO bearings, and the other end is connected to the first oil pipe via a third oil tap.

[0030] One end of the second oil pipe 4 is connected to the second connector 74, and the other end extends to the water pump 3 to lubricate the bearing of the water pump 3. For example, the water pump housing has a third oil passage, one end of which is connected to the bearing mounting hole of the water pump housing, and the other end is equipped with a fourth oil tap that connects to the second oil pipe.

[0031] In the above, the arrangement of the second and third oil passages is similar to that of the first oil passage.

[0032] In a preferred embodiment, the first idler gear 13 and the second idler gear 2 are respectively mounted on the engine via rolling bearings 21 and are located on the left and right sides of the crankshaft gear 1. The first idler gear 13 meshes with the upper left of the crankshaft gear 1, with the first PTO gear 9 meshing with its upper left side and the second PTO gear meshing with its lower left side. The second idler gear 2 meshes with the upper right of the crankshaft gear 1, with the water pump gear meshing with its upper right side. Preferably, the second PTO gear is connected to an air compressor.

[0033] It also includes a generator 10, which is mounted on the lower left of the second PTO via a bracket. The second PTO gear also integrates a pulley, and the generator 10 is connected to the pulley of the second PTO gear via a belt 11.

[0034] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0035] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A gear train with forced lubrication function, comprising a first PTO, a second PTO, a water pump, a crankshaft, a first idler gear and a second idler gear, the first PTO, the second PTO, the water pump, the crankshaft are respectively provided with a first PTO gear, a second PTO gear, a water pump gear, a crankshaft gear, characterized in that: It also includes a forced lubrication circuit, which includes an oil tap, a first oil pipe and a second oil pipe. The oil tap is provided with a first connector and a second connector. One end of the first oil pipe is connected to the first connector and the other end is connected to a second PTO. The middle part is also connected to the first PTO and the second PTO. One end of the second oil pipe is connected to the second connector and the other end extends to the water pump to lubricate the water pump bearing.

2. The gear train having a forced lubrication function according to claim 1, characterized by: The oil tap includes a hinge bolt and an oil pipe ball head. The threaded portion of the hinge bolt has a T-shaped cavity. The oil pipe ball head has a central through hole in the middle, an annular groove on the inner side of the central through hole, and a first connector and a second connector on the outer side of the oil pipe ball head. The hinge bolt is assembled in the central through hole, and the T-shaped cavity communicates with the annular groove.

3. The gear train having a forced lubrication function according to claim 1, characterized in that: The oil nozzle draws oil from the oil passage of the distribution body.

4. The gear train having a forced lubrication function according to claim 1, characterized by: A first oil passage is formed on the housing of the first PTO. One end of the first oil passage is connected to the bearing mounting hole of the first PTO, and the other end extends to the housing of the first PTO and is equipped with a second oil nozzle connected to the first oil pipe.

5. The gear train having a forced lubrication function according to claim 1, characterized by: The housing of the second PTO is provided with a second oil passage; one end of the second oil passage is connected to the bearing mounting hole of the second PTO, and the other end is equipped with a third oil tap that is connected to the first oil pipe.

6. The gear train having a forced lubrication function according to claim 1, characterized by: The water pump housing has a third oil passage. One end of the third oil passage is connected to the bearing mounting hole of the water pump housing, and the other end is equipped with a fourth oil tap that connects to the second oil pipe.

7. The gear train having a forced lubrication function according to claim 1, characterized by: The first idler gear and the second idler gear are respectively mounted on the engine via rolling bearings.

8. The gear train having a forced lubrication function according to claim 7, characterized by: The first idler gear and the second idler gear are respectively located on the left and right sides of the crankshaft gear; wherein, the first idler gear meshes with the upper left of the crankshaft gear, with the first PTO gear meshing with the upper left and the second PTO gear meshing with the lower left.

9. The gear train having a forced lubrication function according to claim 8, characterized by: It also includes a generator, which is mounted on the lower left of the second PTO via a bracket. The second PTO gear also integrates a pulley, and the generator is connected to the pulley of the second PTO gear via a belt.

10. The gear train having a forced lubrication function according to claim 7, characterized by: The second idler gear meshes with the crankshaft gear to the upper right, and the water pump gear meshes with the crankshaft gear to the upper right.

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