Lubrication structure of driving rear axle for light truck

Abstract

The utility model discloses a driving rear axle lubrication structure for a light truck, which relates to the technical field of driving rear axle lubrication and comprises a differential shell, an oil injection port arranged at the upper end of the differential shell, an oil storage tank arranged at the upper end of the differential shell, an oil outlet pipe connected to the lower end of the oil storage tank, and a graduated scale fixedly arranged on the outer wall of the differential shell. A plug is arranged in the oil outlet pipe, a rotating shaft is fixedly connected to the upper end face of the plug, penetrates through the upper end of the oil storage tank and extends to the outer side of the oil storage tank, a nut is arranged at the upper end of the oil storage tank, a threaded part is arranged on the rotating shaft, and the threaded part of the rotating shaft is in threaded connection with the nut; the problems that in the prior art, if the size of an oil inlet pipe is too large, the descending speed of lubricating oil is too high, the oil inlet pipe is closed after the lubricating oil reaches a proper liquid level, and excessive lubricating oil enters a differential shell are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive rear axle lubrication, in particular to a drive rear axle lubrication structure for a light truck. Background Art

[0002] The rear axle lubrication structure for light trucks refers to the lubrication system for the rear axle of a light truck.

[0003] The existing lubrication system is provided with an oil tank and a scale. An oil inlet pipe is connected between the oil tank and the differential housing of the driving rear axle. By observing that the liquid level of the lubricating oil in the oil tank drops to the appropriate scale value position, it indicates that the required lubricating oil capacity is reached in the differential housing.

[0004] However, the prior art still has shortcomings: when the oil level in the oil tank is observed to drop to a suitable scale value, the oil inlet pipe is closed. The speed at which the oil drops is affected by the size of the oil inlet pipe. If the size of the oil inlet pipe is too large, the oil drops too fast. If the oil inlet pipe is closed after the oil reaches a suitable level, excessive oil will enter the differential housing due to the oil dropping too fast. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a light truck rear axle drive lubrication structure, which solves the problem in the prior art that if the size of the oil inlet pipe is too large, the lubricating oil will drop too fast, and the oil inlet pipe will be closed after the lubricating oil reaches a suitable liquid level, causing excessive lubricating oil to enter the differential housing.

[0006] To achieve the above-mentioned purpose, the utility model proposes a driving rear axle lubrication structure for a light truck, comprising: a differential housing, an oil filling port is arranged at the upper end of the differential housing, an oil storage tank is placed at the upper end of the differential housing, an oil outlet pipe is connected to the lower end of the oil storage tank, a scale is fixedly arranged on the outer wall of the differential housing, the outer shell of the differential housing is transparent, a plug is arranged inside the oil outlet pipe, a rotating shaft is fixedly connected to the upper end face of the plug, the rotating shaft passes through the upper end of the oil storage tank and extends to the outside of the oil storage tank, a nut is arranged at the upper end of the oil storage tank, a threaded portion is arranged on the rotating shaft, the threaded portion of the rotating shaft is threadedly connected to the nut, a through socket is arranged on the plug, and a plug rod is arranged in the socket.

[0007] As a further solution of the utility model: a sealing cover is arranged on the oil filling port. The interior of the oil storage tank is hollow, the size of the oil outlet pipe is adapted to the oil filling port, and the upper end of the oil storage tank is connected with a refueling pipe.

[0008] As a further solution of the utility model: the size of the plug is adapted to the oil outlet pipe, the oil outlet pipe is a circular pipe, the top cross-section of the plug is also circular, a handle is fixedly connected to the top of the rotating shaft, and a connecting rod is symmetrically fixedly connected to the upper end surface of the oil storage tank, and the tops of the two connecting rods are jointly fixed with a connecting nut.

[0009] As a further solution of the utility model: the size of the insertion rod matches that of the insertion hole, and the end of the insertion rod away from the plug passes through the upper end of the oil storage tank and extends to the outside of the oil storage tank.

[0010] As a further solution of the utility model: a filter screen is installed inside the oil outlet pipe and near the lower end, and an oil drain plug is arranged at the bottom of the differential housing.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When it is necessary to add lubricating oil to the differential housing, connect the oil outlet pipe with the oil filling port of the differential housing, use the handle to drive the rotating shaft and the plug to rotate upward, the plug will be separated from the oil outlet pipe, and the lubricating oil will enter the inside of the differential housing from the oil outlet pipe; when it is observed that the lubricating oil level in the oil storage tank is about to drop to the required scale value position, turn the handle, the handle drives the rotating shaft and the plug to rotate downward, so that the plug enters the oil outlet pipe, at this time, the lubricating oil cannot continue to flow into the differential housing, which can prevent the lubricating oil from falling too fast;

[0013] Pull the rod upward to disengage the rod from the socket, and the lubricating oil continues to flow into the differential housing through the socket, so that the lubricating oil slowly drops and does not cause excessive lubricating oil to enter the differential housing until the lubricating oil level in the oil tank drops to the required scale value position, then push the rod downward to re-enter the socket to prevent the lubricating oil from flowing into the differential housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model.

[0017] In the figure: 1. Oil storage tank; 2. Differential housing; 3. Oil drain plug; 4. Filling pipe; 5. Scale; 6. Oil outlet pipe; 7. Rotating shaft; 8. Handle; 9. Nut; 10. Connecting rod; 11. Insert rod; 12. Plug; 13. Filter. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-3 As shown, a rear axle lubrication structure for a light truck includes a differential housing 2, which is a component in the rear axle and is used to balance and distribute power to the left and right driving wheels. An oil filling port is provided at the upper end of the differential housing 2, and a sealing cover is provided on the oil filling port.

[0020] An oil storage tank 1 is placed at the upper end of the differential housing 2. The interior of the oil storage tank 1 is hollow and stores lubricating oil. The lower end of the oil storage tank 1 is connected to an oil outlet pipe 6, and the size of the oil outlet pipe 6 is adapted to the oil filling port. The upper end of the oil storage tank 1 is connected to a filling pipe 4, through which lubricating oil can be added to the oil storage tank 1.

[0021] A scale 5 is fixedly provided on the outer wall of the differential housing 2 . The outer shell of the differential housing 2 is transparent. Through the transparent outer shell of the differential housing 2 and the scale 5 , the staff can conveniently observe the liquid level of the lubricating oil inside the differential housing 2 .

[0022] A plug 12 is provided inside the oil outlet pipe 6. The size of the plug 12 is adapted to the oil outlet pipe 6. The oil outlet pipe 6 is a circular pipe. The top cross-section of the plug 12 is also circular. The upper end face of the plug 12 is fixedly connected with a rotating shaft 7. The rotating shaft 7 passes through the upper end of the oil storage tank 1 and extends to the outside of the oil storage tank 1. The top of the rotating shaft 7 is fixedly connected with a handle 8, and the rotating shaft 7 is conveniently rotated by the handle 8. The upper end face of the oil storage tank 1 is symmetrically fixedly connected with connecting rods 10. The tops of the two connecting rods 10 are commonly fixedly connected with nuts 9. A threaded portion is provided on the rotating shaft 7, and the threaded portion of the rotating shaft 7 is threadedly connected to the nut 9.

[0023] When it is necessary to add lubricating oil to the differential housing 2, open the sealing cover of the oil filling port, connect the oil outlet pipe 6 with the oil filling port of the differential housing 2, and place the oil storage tank 1 on the upper end surface of the differential housing 2. Turn the handle 8, and the handle 8 drives the rotating shaft 7 and the plug 12 to rotate, so that the plug 12 moves upward and separates from the oil outlet pipe 6, and the lubricating oil enters the interior of the differential housing 2 from the oil outlet pipe 6. The staff observes the reduction in the amount of lubricating oil in the oil storage tank 1 through the scale 5.

[0024] The plug 12 is provided with a through socket, in which a plug rod 11 is arranged. The plug rod 11 matches the size of the socket, and the end of the plug rod 11 away from the plug 12 passes through the upper end of the oil storage tank 1 and extends to the outside of the oil storage tank 1.

[0025] When it is observed that the lubricating oil level in the oil storage tank 1 is about to drop to the required scale value, the handle 8 is turned, and the handle 8 drives the rotating shaft 7 and the plug 12 to rotate downward, so that the plug 12 enters the oil outlet pipe 6. At this time, the lubricating oil cannot continue to flow into the differential housing 2, and the plug rod 11 is pulled upward to make the plug rod 11 disengage from the insertion hole, and the lubricating oil continues to flow into the differential housing 2 through the insertion hole until the lubricating oil level in the oil storage tank 1 drops to the required scale value. The plug rod 11 is pushed downward to make the plug rod 11 re-enter the insertion hole, so that the lubricating oil cannot flow into the differential housing 2.

[0026] A filter screen 13 is installed inside the oil outlet pipe 6 and near the lower end. The filter screen 13 is used to filter impurities in the lubricating oil.

[0027] An oil drain plug 3 is provided at the bottom of the differential housing 2 , and a wrench can be used to loosen the oil drain plug 3 so that the lubricating oil can flow out from the bottom of the differential housing 2 .

[0028] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rear axle lubrication structure for a light truck, characterized in that: include: A differential housing (2), wherein an oil filling port is arranged at the upper end of the differential housing (2), an oil storage tank (1) is placed at the upper end of the differential housing (2), an oil outlet pipe (6) is connected to the lower end of the oil storage tank (1), a scale (5) is fixedly arranged on the outer wall of the differential housing (2), the outer shell of the differential housing (2) is transparent, a plug (12) is arranged inside the oil outlet pipe (6), a rotating shaft (7) is fixedly connected to the upper end surface of the plug (12), the rotating shaft (7) passes through the upper end of the oil storage tank (1) and extends to the outside of the oil storage tank (1), a nut (9) is arranged at the upper end of the oil storage tank (1), a threaded portion is arranged on the rotating shaft (7), the threaded portion of the rotating shaft (7) is threadedly connected to the nut (9), a through-hole is opened on the plug (12), and a plug rod (11) is arranged in the hole.

2. The rear axle lubrication structure for a light truck according to claim 1, characterized in that: A sealing cover is provided on the oil filling port, the interior of the oil storage tank (1) is hollow, the size of the oil outlet pipe (6) is adapted to the oil filling port, and the upper end of the oil storage tank (1) is connected to a filling pipe (4).

3. The rear axle lubrication structure for a light truck according to claim 1, characterized in that: The size of the plug (12) is adapted to the oil outlet pipe (6), the oil outlet pipe (6) is a circular pipe, and the top cross-section of the plug (12) is also circular. The top of the rotating shaft (7) is fixedly connected to a handle (8), and the upper end surface of the oil storage tank (1) is symmetrically fixedly connected to a connecting rod (10), and the tops of the two connecting rods (10) are commonly fixed with a connecting nut (9).

4. The rear axle lubrication structure for a light truck according to claim 1, characterized in that: The size of the insertion rod (11) matches that of the insertion hole, and the end of the insertion rod (11) away from the plug (12) passes through the upper end of the oil storage tank (1) and extends to the outside of the oil storage tank (1).

5. The rear drive axle lubrication structure for a light truck according to claim 1, characterized in that: A filter screen (13) is installed inside the oil outlet pipe (6) and near the lower end thereof, and an oil drain plug (3) is arranged at the bottom of the differential housing (2).

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