Lightweight tractor front drive axle

Abstract

The utility model belongs to the technical field of front drive axles, and particularly relates to a light-weight tractor front drive axle which comprises a front axle body, a reinforcing plate is fixedly connected to the outer wall of the front axle body, a driving shaft penetrates through the outer wall of the front axle body, and a first bevel gear is fixedly connected to one end of the driving shaft. A rubber backing ring and a cover plate are arranged to drive a sealing ring on the outer wall of a connecting block to be attached to the inner wall of an oil injection opening, sealing operation on the oil injection opening is achieved, then a rotary knob rotates to drive a threaded column to slide along the connecting block through a bolt, and therefore the oil injection opening is sealed. The threaded column slides to drive the pressing ring at the top end of the pressing plate to move synchronously, then the pressing ring moves to press the rubber backing ring, the rubber backing ring deforms, the outer wall of the rubber backing ring is attached to the inner wall of the oil injection port, the sealing performance of the oil injection port is improved, and the situation that muddy water permeates into the front axle body through the oil injection port, and consequently workpieces in the front axle body are abraded is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of front drive axles, and particularly relates to a lightweight tractor front drive axle. Background Art

[0002] The front drive axle of a tractor generally refers to the transmission device between the tractor engine and the front drive shaft. Its main function is to connect the engine and the front wheels to provide power for the tractor. The front drive axle usually includes components such as a clutch, a transmission, a differential, and a buffer. These components work together to enable the tractor to move forward smoothly and efficiently during use.

[0003] For example, the patent with the publication number CN220500397U discloses an improved Ningbo-type tractor front drive axle, which includes a reinforced octagonal axle housing. A swing support is provided at the center of the axle housing, and a steering cylinder is located above the swing support. Steering rocker arms are respectively hinged on both sides of the steering cylinder, and the two-sided steering rocker arms are respectively connected to the steering knuckles arranged on the steering kingpin housing; the upper part of the steering cylinder is connected with a front axle bracket for connecting the engine; end assemblies connected to the steering kingpin housing are symmetrically arranged at both ends of the axle housing, and self-lubricating bushings are sleeved at the end face bearings of the end assemblies. A double-layer sealing structure is adopted at the end face bearings, and two dust-proof layers and sealing layers are respectively provided. The beneficial effects of the utility model are: novel design, reasonable structure. By strengthening the load-bearing structure of the front drive axle, the steering stability and reliability of the tractor are improved, the wear and friction of the front drive axle are reduced, and at the same time, the sealing performance is increased, and the failure rate and maintenance cost of the tractor are reduced.

[0004] When the existing lightweight tractor front drive axle is working, muddy water seeps into the interior of the front axle main body through the oil filling port, resulting in wear of the workpieces inside the front axle main body. In view of this, we propose a lightweight tractor front drive axle. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lightweight tractor front drive axle for the above-mentioned existing technical problems, to avoid the problem that muddy water seeps into the interior of the front axle main body through the oil filling port, resulting in wear of the workpieces inside the front axle main body.

[0006] In view of this, the utility model provides a lightweight tractor front drive axle, which includes a front axle main body. A reinforcement plate is fixedly connected to the outer wall of the front axle main body. A driving shaft penetrates through the outer wall of the front axle main body. A first bevel gear is fixedly connected to one end of the driving shaft. A second bevel gear is meshed with the meshing surface of the first bevel gear. A connecting shaft is fixedly connected to the outer wall of the second bevel gear. One end of the connecting shaft extends to the outer wall of the front axle main body and is fixedly connected to a third bevel gear;

[0007] Fuel filling port, the bottom end of the fuel filling port is communicated with the inner wall of the front axle main body, the top end of the fuel filling port is threadedly connected with a cover plate, the bottom end of the cover plate is fixedly connected with a connecting block that fits the inner wall of the fuel filling port, a sealing ring is arranged at the connecting part of the connecting block and the fuel filling port, a bolt is screwed on the top end of the cover plate, the top end of the bolt is fixedly connected with a knob, the outer wall of the bolt is threadedly connected with a threaded column, the bottom end of the threaded column is fixedly connected with a pressing plate, a pressing ring is fixedly connected to the outer wall of the threaded column, and a rubber gasket ring sleeved on the outer wall of the threaded column is attached to the top end of the pressing ring.

[0008] Based on the above structure, the cover plate drives the sealing ring on the outer wall of the connecting block to fit the inner wall of the fuel filling port, realizing the sealing operation of the fuel filling port. Then, the staff rotates the knob, and the rotation of the knob drives the threaded column to slide along the connecting block through the bolt. The sliding of the threaded column drives the pressing ring at the top of the pressing plate to move synchronously. Furthermore, the movement of the pressing ring compresses the rubber gasket ring, and the rubber gasket ring deforms, so that the outer wall of the rubber gasket ring fits the inner wall of the fuel filling port, improving the sealing performance of the fuel filling port and preventing mud and water from seeping into the front axle main body through the fuel filling port, resulting in wear of the internal components of the front axle main body.

[0009] Preferably, the cross-section of the reinforcing plate is in the shape of an "I". In this embodiment, by setting the reinforcing plate with a cross-section in the shape of an "I", it is not only beneficial to improve the strength of the front axle main body, but also reduces the overall weight of the front axle main body.

[0010] Preferably, there are two groups of fuel filling ports, and the two groups of fuel filling ports are symmetrical about the front axle main body. In this embodiment, by setting two groups of fuel filling ports, it is beneficial to perform a comprehensive lubrication operation on the inside of the front axle main body.

[0011] Preferably, the sealing ring forms a sealing structure between the connecting block and the fuel filling port. In this embodiment, the cover plate drives the sealing ring on the outer wall of the connecting block to fit the inner wall of the fuel filling port, realizing the sealing operation of the fuel filling port.

[0012] Preferably, the pressing plate forms a sliding structure with the connecting block through the bolt and the threaded column. In this embodiment, the rotation of the knob drives the threaded column to slide along the connecting block through the bolt, and the sliding of the threaded column drives the pressing ring at the top of the pressing plate to move synchronously, realizing the control operation of the sliding of the pressing ring.

[0013] Preferably, the outer shape of the pressing ring is frustum-shaped, and the connecting surface of the rubber gasket ring and the pressing ring is inclined. In this embodiment, the pressing ring moves to compress the rubber gasket ring, and the rubber gasket ring deforms, so that the outer wall of the rubber gasket ring fits the inner wall of the fuel filling port.

[0014] Preferably, the outer wall of the rubber gasket ring is wavy. In this embodiment, it is beneficial to improve the sealing performance of the fuel filling port and prevent mud and water from seeping into the front axle main body through the fuel filling port, resulting in wear of the internal components of the front axle main body.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. For the front drive axle of the lightweight tractor, by setting a reinforcement plate, when the driving shaft rotates, the first bevel gear and the second bevel gear mesh with each other to drive the connecting shaft to rotate, and the rotation of the connecting shaft drives the third bevel gear to rotate, realizing the power transmission of the front axle body. By setting a reinforcement plate with an I-shaped cross-section, it not only helps to improve the strength of the front axle body but also reduces the overall weight of the front axle body.

[0017] 2. For the front drive axle of the lightweight tractor, by setting a rubber gasket ring, the cover plate drives the sealing ring on the outer wall of the connecting block to fit with the inner wall of the oil filling port, realizing the sealing operation of the oil filling port. Then, when the knob rotates, the bolt drives the threaded column to slide along the connecting block, and the sliding of the threaded column drives the pressure ring at the top of the pressing plate to move synchronously. Furthermore, the movement of the pressure ring compresses the rubber gasket ring, and the rubber gasket ring deforms so that the outer wall of the rubber gasket ring fits with the inner wall of the oil filling port, improving the sealing performance of the oil filling port and preventing muddy water from seeping into the front axle body through the oil filling port, causing wear to the internal components of the front axle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the overall internal structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the sectional structure of the reinforcement plate of the present utility model;

[0021] Figure 4 is a schematic diagram of the sectional structure of the oil filling port of the present utility model.

[0022] The markings in the figure are shown as:

[0023] 1. Front axle body; 2. Reinforcement plate; 3. Driving shaft; 4. First bevel gear; 5. Second bevel gear; 6. Connecting shaft; 7. Third bevel gear; 8. Oil filling port; 9. Cover plate; 10. Connecting block; 11. Sealing ring; 12. Bolt; 1201. Knob; 13. Threaded column; 14. Pressing plate; 15. Pressure ring; 16. Rubber gasket ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further elaborates on this application in conjunction with the attached Figure 1 - Figure 4 drawings for a more detailed description.

[0025] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, workpiece or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0026] An embodiment of this application discloses a lightweight tractor front drive axle, which includes a front axle main body 1. A reinforcing plate 2 is fixedly connected to the outer wall of the front axle main body 1. A driving shaft 3 penetrates through the outer wall of the front axle main body 1. One end of the driving shaft 3 is fixedly connected to a first bevel gear 4. A second bevel gear 5 is meshed with the meshing surface of the first bevel gear 4. A connecting shaft 6 is fixedly connected to the outer wall of the second bevel gear 5. One end of the connecting shaft 6 extends to the outer wall of the front axle main body 1 and is fixedly connected to a third bevel gear 7;

[0027] An oil filling port 8, the bottom end of the oil filling port 8 is communicated with the inner wall of the front axle main body 1. The top end of the oil filling port 8 is threadedly connected with a cover plate 9. A connecting block 10 that fits the inner wall of the oil filling port 8 is fixedly connected to the bottom end of the cover plate 9. A sealing ring 11 is arranged at the connecting part of the connecting block 10 and the oil filling port 8. A bolt 12 is screwed on the top end of the cover plate 9. A knob 1201 is fixedly connected to the top end of the bolt 12. A threaded column 13 is threadedly connected to the outer wall of the bolt 12. A pressing plate 14 is fixedly connected to the bottom end of the threaded column 13. A pressing ring 15 is fixedly connected to the outer wall of the threaded column 13. A rubber gasket ring 16 sleeved on the outer wall of the threaded column 13 is attached to the top end of the pressing ring 15.

[0028] Based on the above structure, the cover plate 9 drives the sealing ring 11 on the outer wall of the connecting block 10 to fit the inner wall of the oil filling port 8, realizing the sealing operation of the oil filling port 8. Then, the staff rotates the knob 1201. The rotation of the knob 1201 drives the threaded column 13 to slide along the connecting block 10 through the bolt 12. The sliding of the threaded column 13 drives the pressing ring 15 at the top end of the pressing plate 14 to move synchronously. Furthermore, the movement of the pressing ring 15 compresses the rubber gasket ring 16, and the rubber gasket ring 16 deforms, so that the outer wall of the rubber gasket ring 16 fits the inner wall of the oil filling port 8, improving the sealing performance of the oil filling port 8 and preventing muddy water from seeping into the interior of the front axle main body 1 through the oil filling port 8, resulting in wear of the internal workpieces of the front axle main body 1.

[0029] In one of the embodiments, the cross-section of the reinforcing plate 2 is in an I shape.

[0030] In this embodiment, by setting the reinforcing plate 2 with an I-shaped cross-section, it is not only beneficial to improve the strength of the front axle main body 1, but also reduces the overall weight of the front axle main body 1.

[0031] In one embodiment, there are two groups of oil filling ports 8, and the two groups of oil filling ports 8 are symmetric with respect to the front axle body 1.

[0032] In this embodiment, by providing two groups of oil filling ports 8, it is beneficial to perform a comprehensive lubrication operation on the inside of the front axle body 1.

[0033] In one embodiment, a sealing structure is formed between the sealing ring 11 and the oil filling port 8 through the connecting block 10.

[0034] In this embodiment, the cover plate 9 drives the sealing ring 11 on the outer wall of the connecting block 10 to fit against the inner wall of the oil filling port 8, realizing the sealing operation of the oil filling port 8.

[0035] In one embodiment, a sliding structure is formed between the pressing plate 14 and the connecting block 10 through the bolt 12 and the threaded column 13.

[0036] In this embodiment, when the knob 1201 rotates, the bolt 12 drives the threaded column 13 to slide along the connecting block 10, and the sliding of the threaded column 13 drives the pressing ring 15 at the top of the pressing plate 14 to move synchronously, realizing the control operation of the sliding of the pressing ring 15.

[0037] In one embodiment, the outer shape of the pressing ring 15 is frustum-shaped, and the connection surface between the rubber gasket ring 16 and the pressing ring 15 is inclined.

[0038] In this embodiment, the pressing ring 15 moves to press the rubber gasket ring 16, and the rubber gasket ring 16 deforms so that the outer wall of the rubber gasket ring 16 fits against the inner wall of the oil filling port 8.

[0039] In one embodiment, the outer wall of the rubber gasket ring 16 is wavy.

[0040] In this embodiment, it is beneficial to improve the sealing performance of the oil filling port 8, and avoid muddy water from seeping into the inside of the front axle body 1 through the oil filling port 8, resulting in wear of the internal components of the front axle body 1.

[0041] When the lightweight tractor front drive axle of this embodiment is in use, first, the driving shaft 3 rotates and drives the connecting shaft 6 to rotate through the meshing of the first bevel gear 4 and the second bevel gear 5. The rotation of the connecting shaft 6 drives the third bevel gear 7 to rotate, realizing the power transmission of the front axle body 1. By providing the reinforcing plate 2 with an I-shaped cross-section, it is not only beneficial to improve the strength of the front axle body 1, but also reduces the overall weight of the front axle body 1.

[0042] Next, the staff inject lubricating oil into the front axle body 1 through the oil filling port 8. Then, the staff rotate the cover plate 9, and the cover plate 9 drives the sealing ring 11 on the outer wall of the connecting block 10 to fit with the inner wall of the oil filling port 8, realizing the sealing operation of the oil filling port 8. Then, the staff rotate the knob 1201. The rotation of the knob 1201 drives the threaded column 13 to slide along the connecting block 10 through the bolt 12. The sliding of the threaded column 13 drives the pressure ring 15 at the top of the pressing plate 14 to move synchronously. Furthermore, the movement of the pressure ring 15 compresses the rubber gasket ring 16, and the rubber gasket ring 16 deforms, so that the outer wall of the rubber gasket ring 16 fits with the inner wall of the oil filling port 8, improving the sealing performance of the oil filling port 8 and preventing muddy water from seeping into the interior of the front axle body 1 through the oil filling port 8, resulting in wear of the internal components of the front axle body 1.

[0043] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight tractor front drive axle, characterized in that, Including: A front axle main body (1), a reinforcing plate (2) is fixedly connected to the outer wall of the front axle main body (1), a driving shaft (3) penetrates through the outer wall of the front axle main body (1), a first bevel gear (4) is fixedly connected to one end of the driving shaft (3), a second bevel gear (5) is engaged with the meshing surface of the first bevel gear (4), a connecting shaft (6) is fixedly connected to the outer wall of the second bevel gear (5), and one end of the connecting shaft (6) extends to the outer wall of the front axle main body (1) and is fixedly connected to a third bevel gear (7); An oil filling port (8), the bottom end of the oil filling port (8) is communicated with the inner wall of the front axle main body (1), a cover plate (9) is threadedly connected to the top end of the oil filling port (8), a connecting block (10) which is attached to the inner wall of the oil filling port (8) is fixedly connected to the bottom end of the cover plate (9), a sealing ring (11) is arranged at the connecting part of the connecting block (10) and the oil filling port (8), a bolt (12) is rotatably connected to the top end of the cover plate (9), a knob (1201) is fixedly connected to the top end of the bolt (12), a threaded column (13) is threadedly connected to the outer wall of the bolt (12), a pressing plate (14) is fixedly connected to the bottom end of the threaded column (13), a pressing ring (15) is fixedly connected to the outer wall of the threaded column (13), and a rubber gasket ring (16) sleeved on the outer wall of the threaded column (13) is attached to the top end of the pressing ring (15).

2. The lightweight tractor front drive axle according to claim 1, characterized in that: The cross section of the reinforcing plate (2) is in an I shape.

3. The lightweight tractor front drive axle according to claim 1, characterized in that: Two groups of the oil filling ports (8) are provided, and the two groups of oil filling ports (8) are symmetrical about the front axle main body (1).

4. The lightweight tractor front drive axle according to claim 1, characterized in that: The sealing ring (11) forms a sealing structure with the oil filling port (8) through the connecting block (10).

5. The lightweight tractor front drive axle according to claim 1, characterized in that: The pressing plate (14) forms a sliding structure with the connecting block (10) through the bolt (12) and the threaded column (13).

6. The lightweight tractor front drive axle according to claim 1, wherein: The outer shape of the pressing ring (15) is frustum-shaped, and the connecting surface of the rubber gasket ring (16) and the pressing ring (15) is inclined.

7. The lightweight tractor front drive axle according to claim 1, characterized in that: The outer wall of the rubber gasket ring (16) is wavy.

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