Automatic inflation and deflation front drive axle and tractor

Abstract

The utility model provides an automatic inflation and deflation front drive axle and a tractor. An automatic inflation and deflation front drive axle comprises a hub, a steering knuckle and a sealing structure, the hub is provided with a first air channel, the steering knuckle is provided with a second air channel, the sealing structure is provided with a third air channel, the hub is rotationally installed on the steering knuckle, the sealing structure is located between the hub and the steering knuckle, and the third air channel is communicated with the first air channel. The first air channel and the second air channel are both connected with the third air channel.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor inflation and deflation, in particular to an automatic inflation and deflation front drive axle and a tractor. Background Art

[0002] The existing tractor front axle cannot provide automatic inflation and deflation functions, and the front axle wheel side seal reliability is insufficient, which is prone to oil leakage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automatic inflation and deflation front drive axle and a tractor in view of the deficiencies in the prior art.

[0004] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: an automatic inflation and deflation front drive axle, comprising: a wheel hub, a steering knuckle and a sealing structure, wherein a first air duct is provided on the wheel hub, a second air duct is provided on the steering knuckle, a third air duct is provided on the sealing structure, the wheel hub is rotatably mounted on the steering knuckle, the sealing structure is located between the wheel hub and the steering knuckle, and the first air duct and the second air duct are both connected to the third air duct.

[0005] The beneficial effects of this utility model's technical solution include: through the design of the wheel hub, steering knuckle, and air passages in the sealing structure, the front drive axle can achieve automatic inflation and deflation. A sealing structure is provided between the wheel hub and steering knuckle to seal the oil in the bearings, improving sealing and preventing oil leakage.

[0006] Furthermore, the first air duct is an L-shaped structure, an air inlet is provided on the wheel hub, the first end of the first air duct is connected to the air inlet, the second end of the first air duct is connected to the third air duct, and the third end of the first air duct is installed with a first blockage.

[0007] The beneficial effects of adopting the above further technical solution are: the first airway is L-shaped, so that the first airway adapts to the structure of the wheel hub, facilitating the processing and opening of the first airway. The provision of the first plug facilitates sealing the first airway and facilitates maintenance of the first airway by removing the first plug.

[0008] Furthermore, a tire is mounted on the wheel hub, and the air inlet is connected to the tire.

[0009] The beneficial effect of adopting the above further technical solution is that the air inlet is connected to the tire, making it easy to inflate and deflate the tire through the air inlet.

[0010] Furthermore, the second air duct is an L-shaped structure, an inflation port is provided on the steering knuckle, the first end of the second air duct is connected to the inflation port, the second end of the second air duct is connected to the third air duct, and the third end of the second air duct is installed with a second blockage.

[0011] The beneficial effects of adopting the above-mentioned further technical solution are: the second airway is L-shaped, so that the second airway adapts to the structure of the steering knuckle, facilitating the processing and opening of the second airway. The provision of the second plug facilitates sealing the second airway and facilitates maintenance of the second airway by removing the second plug.

[0012] Furthermore, the inflation port is connected to an inflation and deflation system.

[0013] The beneficial effect of adopting the above further technical solution is that the inflation port is connected to the inflation and deflation system, which facilitates the inflation and deflation of the tire through the inflation port.

[0014] Furthermore, a first annular groove is provided on the inner side of the sealing structure, and the first annular groove is connected to the second air channel and the third air channel respectively.

[0015] The beneficial effect of adopting the above further technical solution is that the provision of the first annular groove facilitates the gas in the second airway to enter the first annular groove, and the rotation of the hub and the sealing structure does not affect the communication of the gas.

[0016] Furthermore, a second annular groove is provided on the inner side of the hub, and the second annular groove is connected to the first air duct and the third air duct respectively.

[0017] The beneficial effect of adopting the above further technical solution is that the provision of the second annular groove facilitates the gas in the third air channel to enter the second annular groove, and the rotation of the hub and the sealing structure does not affect the communication of the gas.

[0018] Furthermore, the sealing structure includes: a sealing inner ring and a sealing outer ring, the sealing outer ring is rotatably connected to the sealing inner ring, the sealing inner ring is connected to the steering knuckle, and the sealing outer ring is connected to the wheel hub.

[0019] The beneficial effect of adopting the above-mentioned further technical solution is that the inner sealing ring is fixed to the steering knuckle, the outer sealing ring rotates with the wheel hub, and the third air channel rotates with the sealing structure, which facilitates the sealing of oil at the bearing through the sealing structure, improves the sealing performance and prevents oil leakage.

[0020] Furthermore, a first bearing and a second bearing are installed between the wheel hub and the steering knuckle, the outer ring of the first bearing and the outer ring of the second bearing are both connected to the wheel hub, and the inner ring of the first bearing and the inner ring of the second bearing are both connected to the steering knuckle.

[0021] The beneficial effect of adopting the above further technical solution is that the arrangement of the first bearing and the second bearing facilitates the rotational installation of the wheel hub on the steering knuckle, prevents the wheel hub and the steering knuckle from shaking relative to each other, and improves the stability and reliability of the front drive axle.

[0022] In addition, the utility model also provides a tractor, comprising any one of the above-mentioned automatic inflation and deflation front drive axles.

[0023] The beneficial effects of this utility model's technical solution include: through the design of the wheel hub, steering knuckle, and air passages in the sealing structure, the front drive axle can achieve automatic inflation and deflation. A sealing structure is provided between the wheel hub and steering knuckle to seal the oil in the bearings, improving sealing and preventing oil leakage.

[0024] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the automatic inflation and deflation front drive axle provided by an embodiment of the utility model.

[0026] Explanation of the accompanying figures: 1. wheel hub; 2. steering knuckle; 3. sealing structure; 4. first air duct; 5. second air duct; 6. third air duct; 7. air inlet; 8. first plug; 9. inflation port; 10. second plug; 11. first annular groove; 12. second annular groove; 13. first bearing; 14. second bearing. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] like Figure 1 As shown, an embodiment of the utility model provides an automatically inflating and deflation front drive axle, comprising: a wheel hub 1, a steering knuckle 2 and a sealing structure 3, wherein the wheel hub 1 is provided with a first air duct 4, the steering knuckle 2 is provided with a second air duct 5, and the sealing structure 3 is provided with a third air duct 6. The wheel hub 1 is rotatably mounted on the steering knuckle 2, and the sealing structure 3 is located between the wheel hub 1 and the steering knuckle 2, and the first air duct 4 and the second air duct 5 are both connected to the third air duct 6.

[0029] The beneficial effects of this utility model's technical solution include: through the design of the wheel hub, steering knuckle, and air passages in the sealing structure, the front drive axle can achieve automatic inflation and deflation. A sealing structure is provided between the wheel hub and steering knuckle to seal the oil in the bearings, improving sealing and preventing oil leakage.

[0030] The sealing structure is a circular ring structure, and a mounting groove for mounting the sealing structure is provided on the inner side of the hub.

[0031] The tractor's front axle automatic inflation and deflation system (automatic inflation and deflation front drive axle) features a dedicated seal (seal structure) with an annular groove (first annular groove) on its outer wall. Air enters this groove (first annular groove), ensuring that air flow remains constant even when the wheel hub and seal (seal structure) rotate. The wheel hub also has an annular groove (second annular groove) on its inner side. This dedicated seal (seal structure) seals oil from the bearings (first and second bearings).

[0032] like Figure 1 As shown, further, the first air duct 4 is an L-shaped structure, an air inlet 7 is provided on the wheel hub 1, the first end of the first air duct 4 is connected to the air inlet 7, the second end of the first air duct 4 is connected to the third air duct 6, and the third end of the first air duct 4 is installed with a first plug 8.

[0033] The beneficial effects of adopting the above further technical solution are: the first airway is L-shaped, so that the first airway adapts to the structure of the wheel hub, facilitating the processing and opening of the first airway. The provision of the first plug facilitates sealing the first airway and facilitates maintenance of the first airway by removing the first plug.

[0034] like Figure 1 As shown, further, a tire is mounted on the wheel hub 1, and the air inlet 7 is connected to the tire.

[0035] The beneficial effect of adopting the above further technical solution is that the air inlet is connected to the tire, making it easy to inflate and deflate the tire through the air inlet.

[0036] like Figure 1 As shown, further, the second air duct 5 is an L-shaped structure, an inflation port 9 is provided on the steering knuckle 2, a first end of the second air duct 5 is connected to the inflation port 9, a second end of the second air duct 5 is connected to the third air duct 6, and a second plug 10 is installed at the third end of the second air duct 5.

[0037] The beneficial effects of adopting the above-mentioned further technical solution are: the second airway is L-shaped, so that the second airway adapts to the structure of the steering knuckle, facilitating the processing and opening of the second airway. The provision of the second plug facilitates sealing the second airway and facilitates maintenance of the second airway by removing the second plug.

[0038] Furthermore, the inflation port 9 is connected to an inflation and deflation system.

[0039] The beneficial effect of adopting the above further technical solution is that the inflation port is connected to the inflation and deflation system, which facilitates the inflation and deflation of the tire through the inflation port.

[0040] like Figure 1 As shown, further, a first annular groove 11 is provided on the inner side of the sealing structure 3 , and the first annular groove 11 is connected to the second air channel 5 and the third air channel 6 respectively.

[0041] The beneficial effect of adopting the above further technical solution is that the provision of the first annular groove facilitates the gas in the second airway to enter the first annular groove, and the rotation of the hub and the sealing structure does not affect the communication of the gas.

[0042] like Figure 1 As shown, further, a second annular groove 12 is provided on the inner side of the wheel hub 1 , and the second annular groove 12 is connected to the first air channel 4 and the third air channel 6 respectively.

[0043] The beneficial effect of adopting the above further technical solution is that the provision of the second annular groove facilitates the gas in the third air channel to enter the second annular groove, and the rotation of the hub and the sealing structure does not affect the communication of the gas.

[0044] Furthermore, the sealing structure 3 includes: a sealing inner ring and a sealing outer ring, the sealing outer ring is rotatably connected to the sealing inner ring, the sealing inner ring is connected to the steering knuckle 2, and the sealing outer ring is connected to the wheel hub 1.

[0045] The beneficial effect of adopting the above-mentioned further technical solution is that the inner sealing ring is fixed to the steering knuckle, the outer sealing ring rotates with the wheel hub, and the third air channel rotates with the sealing structure, which facilitates the sealing of oil at the bearing through the sealing structure, improves the sealing performance and prevents oil leakage.

[0046] It should be noted that the structure in the figure is a schematic diagram, and those skilled in the art can easily imagine that there may be a boundary line between the sealing inner ring and the sealing outer ring in the cross-sectional view.

[0047] like Figure 1 As shown, further, a first bearing 13 and a second bearing 14 are installed between the wheel hub 1 and the steering knuckle 2, the outer ring of the first bearing 13 and the outer ring of the second bearing 14 are both connected to the wheel hub 1, and the inner ring of the first bearing 13 and the inner ring of the second bearing 14 are both connected to the steering knuckle 2.

[0048] The beneficial effect of adopting the above further technical solution is that the arrangement of the first bearing and the second bearing facilitates the rotational installation of the wheel hub on the steering knuckle, prevents the wheel hub and the steering knuckle from shaking relative to each other, and improves the stability and reliability of the front drive axle.

[0049] The sealing structure is arranged adjacent to the first bearing and the second bearing. A protrusion for installing the first bearing and the second bearing is installed at one end of the steering knuckle.

[0050] The steering knuckle remains stationary, while the wheel hub rotates around it via bearings (the first and second bearings). A dedicated seal inner ring (seal inner ring) is fixed to the steering knuckle, while the outer ring (seal outer ring) rotates with the wheel hub. The air passage (third air passage) of the dedicated seal (seal structure) rotates with the dedicated seal (seal structure). Gas enters the steering knuckle from the inflation port, flows along the knuckle's air passage (the second air passage) into the annular groove (the first annular groove) of the dedicated seal (seal structure). The dedicated seal's annular groove (the first annular groove) connects to the dedicated seal's air passage (the third air passage), and then enters the wheel hub through the wheel hub's air passage (the first air passage) and, through the air intake, into the tire.

[0051] In addition, the utility model also provides a tractor, comprising any one of the above-mentioned automatic inflation and deflation front drive axles.

[0052] The beneficial effects of this utility model's technical solution include: through the design of the wheel hub, steering knuckle, and air passages in the sealing structure, the front drive axle can achieve automatic inflation and deflation. A sealing structure is provided between the wheel hub and steering knuckle to seal the oil in the bearings, improving sealing and preventing oil leakage.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic inflation and deflation front drive axle, characterized in that: include: A wheel hub, a steering knuckle and a sealing structure, wherein the wheel hub is provided with a first air duct, the steering knuckle is provided with a second air duct, and the sealing structure is provided with a third air duct. The wheel hub is rotatably mounted on the steering knuckle, the sealing structure is located between the wheel hub and the steering knuckle, and the first air duct and the second air duct are both connected to the third air duct.

2. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: The first air duct is an L-shaped structure, an air inlet is provided on the wheel hub, a first end of the first air duct is connected to the air inlet, a second end of the first air duct is connected to the third air duct, and a first blockage is installed at the third end of the first air duct.

3. The automatic inflation and deflation front drive axle according to claim 2, characterized in that: A tire is mounted on the wheel hub, and the air inlet is connected to the tire.

4. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: The second air channel is an L-shaped structure, an inflation port is provided on the steering knuckle, a first end of the second air channel is connected to the inflation port, a second end of the second air channel is connected to the third air channel, and a second blockage is installed at the third end of the second air channel.

5. The automatic inflation and deflation front drive axle according to claim 4, characterized in that: The inflation port is connected to an inflation and deflation system.

6. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: A first annular groove is provided on the inner side of the sealing structure, and the first annular groove is connected to the second air channel and the third air channel respectively.

7. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: A second annular groove is provided on the inner side of the wheel hub, and the second annular groove is connected to the first air channel and the third air channel respectively.

8. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: The sealing structure includes: a sealing inner ring and a sealing outer ring, the sealing outer ring is rotatably connected to the sealing inner ring, the sealing inner ring is connected to the steering knuckle, and the sealing outer ring is connected to the wheel hub.

9. The automatic inflation and deflation front drive axle according to claim 1, characterized in that: A first bearing and a second bearing are installed between the wheel hub and the steering knuckle. The outer ring of the first bearing and the outer ring of the second bearing are both connected to the wheel hub, and the inner ring of the first bearing and the inner ring of the second bearing are both connected to the steering knuckle.

10. A tractor, characterized in that: An automatic inflation and deflation front drive axle comprising any one of claims 1 to 9.

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