Half shaft sleeve of tractor

Abstract

The utility model relates to a tractor axle shaft sleeve, which is characterized in that a channel convenient for an axle shaft to pass through is arranged in the axle shaft sleeve, a first supporting part and a second supporting part which are used for supporting the axle shaft are arranged at two ends of the axle shaft sleeve, and a sleeve part of the axle shaft sleeve is arranged in the middle of the axle shaft sleeve; the first supporting part comprises a flange plate, a reinforcing rib plate is connected between the flange plate and the sleeve part, the front end of the channel penetrates through the center position of the flange plate, the channel forms a sealing cavity in the sleeve part, a gear mounting seat is arranged on the outer side of the second supporting part, and the tail end of the channel sequentially penetrates through the sleeve part and the second supporting part. The first supporting part and the second supporting part are arranged to support the half shaft, the sealing cavity with a large space is formed in the shaft sleeve part, external counter-acting force or other stress can be effectively buffered, and impact on the half shaft is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor production and manufacturing, in particular to a half shaft sleeve of a tractor. Background Art

[0002] The power of the rear axle of a tractor is transmitted to the wheels through a half shaft by a differential gear, driving the wheels to rotate. The half shaft sleeve is connected between the differential gear and the wheels and is an important component for transmitting the driving force to the wheels.

[0003] During use, due to the rebound force of the ground, the radial force and axial force on the half shaft increase, so the half shaft is very easy to break or be damaged, affecting the normal use of the tractor. In addition to connecting various components to transmit the driving force, the half shaft sleeve also has the function of sharing the above forces to protect the half shaft from damage. Due to the self-weight of the vehicle body, most of the reaction forces generated during driving are concentrated on the half shaft sleeve, and the half shaft sleeve is very easy to be damaged and deformed, posing a safety hazard to tractor driving. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a half shaft sleeve of a tractor with high structural strength.

[0005] To solve the above technical problem, the technical solution of the utility model is: a half shaft sleeve of a tractor, a channel for the half shaft to pass through is arranged inside the half shaft sleeve, first support part and second support part for supporting the half shaft are arranged at both ends of the half shaft sleeve, and the middle part of the half shaft sleeve is the sleeve part of the half shaft sleeve; the first support part includes a flange, a reinforcing rib plate is connected between the flange and the sleeve part, the front end of the channel penetrates through the center position of the flange, a sealing cavity is formed inside the sleeve part of the channel, a gear mounting seat is arranged outside the second support part, and the end of the channel sequentially passes through the sleeve part and the second support part.

[0006] As a preferred technical solution, an arc-shaped wall formed by inward depression is arranged at the front end of the first support part and the sleeve part of the half shaft sleeve, a notch is formed on the flange by the arc-shaped wall, and the arc-shaped wall is recessed into the sealing cavity at the front end of the sleeve part.

[0007] As a further improvement, a first joint surface, a second mounting surface and a third mounting surface which are annular and have gradually increasing inner diameters are formed inside the channel of the first support part, a first limiting platform is formed between the first joint surface and the second mounting surface, a second limiting platform is formed between the second mounting surface and the third mounting surface, and the first joint surface is close to the outer surface of the half shaft.

[0008] As a further improvement, the flange extends outwards from the front sleeve, and the inner hole surface of the front sleeve coincides with the third mounting surface.

[0009] As another preferred technical solution, the sleeve portion has four flat side surfaces located in the up, down, left, and right directions, and irregular curved surfaces are connected between the two side surfaces in pairs.

[0010] As a further improvement, the side surface is provided with a device mounting seat or at least two parallel strip-shaped support blocks.

[0011] As an improvement, the gear mounting portion is square, and the four side walls of the square gear mounting portion are parallel to the side surface.

[0012] As a further improvement, a positioning groove is provided on the outer surface of the second support portion, and the positioning groove is located above the center line of the gear mounting portion and perpendicular to the top side wall of the gear mounting portion.

[0013] As another preferred solution, the second support portion forms an annular fourth joint surface, a fifth mounting surface, and a sixth mounting surface with gradually increasing inner diameters inside the channel. A third limiting platform is formed between the fourth joint surface and the fifth mounting surface, and a fourth limiting platform is formed between the fifth mounting surface and the sixth mounting surface. The fourth joint surface is close to the outer surface of the half shaft, the first joint surface is coplanar with the fourth joint surface, and the sixth mounting surface coincides with the inner surface of the gear mounting seat.

[0014] As a further improvement, a reinforcing plate is provided inside the sealing cavity of the second support portion, and a connecting rib plate is provided between the reinforcing plate and the inner wall of the shaft sleeve portion.

[0015] Due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows: In the present utility model, the first support portion and the second support portion are provided to support the half shaft. There is a sealing cavity with a relatively large space inside the shaft sleeve portion, which can effectively buffer external reaction forces or other forces, and effectively reduce the impact on the half shaft.

[0016] Due to the installation of a sealing structure on the first support portion and the second support portion, the installation stability of the half shaft sleeve is high and the sealing performance is good. Due to the provision of structures such as reinforcing rib plates and reinforcing plates, the structural strength of the half shaft sleeve is improved, the impact resistance of the half shaft sleeve is improved, and the damage rate and maintenance frequency are reduced. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0019] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of the first support part of an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of the second support part of an embodiment of the present invention;

[0022] Figure 5 is Figure 3 the right view of;

[0023] In the figure: 100 - half shaft sleeve; 101 - channel; 110 - first support part; 111 - flange; 112 - stiffening rib plate; 113 - first joint surface; 114 - second mounting surface; 115 - third mounting surface; 116 - first limiting platform; 117 - second limiting platform; 118 - front sleeve; 120 - second support part; 121 - gear mounting seat; 122 - positioning groove; 123 - fourth joint surface; 124 - fifth mounting surface; 125 - sixth mounting surface; 126 - third limiting platform; 127 - fourth limiting platform; 128 - reinforcing plate; 129 - connecting rib plate; 130 - sleeve part; 131 - side; 132 - strip-shaped support block; 133 - curved surface; 140 - arc wall; 141 - notch. Detailed implementation manners

[0024] As Figures 1 to 5 shown, a tractor half shaft sleeve. In this embodiment, a channel 101 for facilitating the passing of the half shaft is provided inside the half shaft sleeve 100. The two ends of the half shaft sleeve are provided with a first support part 110 and a second support part 120 for supporting the half shaft, and the middle part of the half shaft sleeve is a sleeve part 130.

[0025] The first support portion 110 includes a flange 111. A reinforcing rib plate 112 is connected between the flange 111 and the sleeve portion 130. The front end of the channel 101 penetrates through the center of the flange 111. The channel forms a sealed cavity inside the sleeve portion 130. A gear mounting seat 121 is provided on the outer side of the second support portion 120. The end of the channel 101 sequentially passes through the sleeve portion 130 and the second support portion 120.

[0026] At the front ends of the first support portion 110 and the sleeve portion 130 of the half shaft sleeve, an arc-shaped wall 140 is formed by inward depression. The arc-shaped wall 140 forms a notch 141 on the flange 111. The arc-shaped wall 140 is recessed into the sealed cavity at the front end of the sleeve portion 130.

[0027] The first support portion 110 forms an annular first joint surface 113, a second mounting surface 114, and a third mounting surface 115 with gradually increasing inner diameters inside the channel. A first limiting platform 116 is formed between the first joint surface 113 and the second mounting surface 114. A second limiting platform 117 is formed between the second mounting surface 144 and the third mounting surface 115. The first joint surface 116 is close to the outer surface of the half shaft. The flange 111 extends outwards the front sleeve 118. The inner hole surface of the front sleeve 118 coincides with the third mounting surface 115.

[0028] During installation, the half shaft passes through the front sleeve 118. The first limiting platform 116 is used to limit the installation position of the half shaft. An oil seal is installed between the second mounting surface 114 and the half shaft. An inner shaft sleeve is installed between the third mounting surface and the half shaft. The flange 111 is connected to the brake drum.

[0029] The sleeve portion 130 has four flat side surfaces 131 located in the up, down, left, and right directions. Irregular curved surfaces 133 are connected between the side surfaces 131 in pairs. Equipment mounting seats or strip-shaped support blocks are provided on the side surfaces. One of the side surfaces is used as an equipment mounting seat (the equipment mounting seat is not installed in the figure). Installation holes can be directly opened on the side surface or the equipment mounting seat can be integrally formed with the side surface. A plurality of strip-shaped support blocks 132 are integrally provided on one of the side surfaces. The number of strip-shaped support blocks 132 is at least two, and the strip-shaped support blocks 132 are arranged in parallel.

[0030] The gear mounting portion 121 on the outer side of the second support portion 120 is square. The four side walls of the square gear mounting portion 121 are parallel to the side surface 131. A positioning groove 122 is provided by inward depression on the outer surface of the second support portion 120. The positioning groove 122 is located above the center line of the gear mounting portion 121 and perpendicular to the top side wall of the gear mounting portion 121.

[0031] The second support portion 120 forms an annular fourth joint surface 123, a fifth mounting surface 124, and a sixth mounting surface 125 with gradually increasing inner diameters inside the channel. A third limiting platform 126 is formed between the fourth joint surface 123 and the fifth mounting surface 124, and a fourth limiting platform 127 is formed between the fifth mounting surface 124 and the sixth mounting surface 125. The fourth joint surface 123 is close to the outer surface of the half shaft, the first joint surface 113 is coplanar with the fourth joint surface 123, and the sixth mounting surface 125 coincides with the inner surface of the gear mounting seat 121.

[0032] The other end of the half shaft extends out of the gear mounting seat 121. Among them, the half shaft passes through the fourth joint surface 123, the sixth mounting surface 125 supports the differential gear, and a oil seal is installed between the fifth mounting surface 124 and the half shaft. The oil seal installed through the first support portion 110 and the second support portion 120 enables the sealing cavity inside the sleeve portion 130 to achieve a sealing effect.

[0033] In order to improve the structural strength, the second support portion 120 is provided with a reinforcing plate 128 inside the sealing cavity, and a connecting rib plate 129 is provided between the reinforcing plate 128 and the inner wall of the sleeve portion 130.

[0034] The above shows and describes the basic principles, 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. What is described in the above embodiments and the specification only illustrates the principles of 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 tractor half shaft sleeve, characterized in that: The inner part of the half axle casing is provided with a channel for facilitating the passing of the half axle. Both ends of the half axle casing are provided with a first support part and a second support part for supporting the half axle. The middle part of the half axle sleeve is the casing part of the half axle casing. The first support part includes a flange. A reinforcing rib plate is connected between the flange and the casing part. The front end of the channel penetrates through the center position of the flange. The channel forms a sealing cavity inside the casing part. A gear mounting seat is arranged on the outer side of the second support part. The end of the channel sequentially passes through the casing part and the second support part.

2. A tractor half shaft sleeve as claimed in claim 1, characterized in that: An arc-shaped wall formed by inward depression is provided at the front ends of the first support part and the casing part of the half axle casing. The arc-shaped wall forms a notch on the flange. The arc-shaped wall is recessed into the sealing cavity at the front end of the casing part.

3. A tractor half shaft casing as claimed in claim 1 or 2, characterized in that: The first support part forms a first joint surface, a second mounting surface and a third mounting surface that are annular and have a gradually increasing inner diameter inside the channel. A first limiting platform is formed between the first joint surface and the second mounting surface. A second limiting platform is formed between the second mounting surface and the third mounting surface. The first joint surface is close to the outer surface of the half axle.

4. The half shaft casing of a tractor according to claim 3, characterized in that: The flange extends outwards from the front casing. The inner hole surface of the front casing coincides with the third mounting surface.

5. A tractor half shaft casing according to claim 1 or 2, characterized in that: The casing part has four flat side surfaces located in the up, down, left and right directions. Irregular curved surfaces are connected between the side surfaces in pairs.

6. A tractor half shaft sleeve as claimed in claim 5, wherein: The side surface is provided with a device mounting seat or at least two parallel strip-shaped support blocks.

7. A tractor half shaft sleeve as claimed in claim 5, characterized in that: The gear mounting seat is square. The four side walls of the square gear mounting seat are parallel to the side surface.

8. A tractor half-axle casing according to claim 1 or 7, characterized in that: A positioning groove formed by inward depression is provided on the outer surface of the second support part. The positioning groove is located above the center line of the gear mounting seat and is perpendicular to the top side wall of the gear mounting seat.

9. The half shaft casing of a tractor according to claim 3, characterized in that: The second support part forms a fourth joint surface, a fifth mounting surface and a sixth mounting surface that are annular and have a gradually increasing inner diameter inside the channel. A third limiting platform is formed between the fourth joint surface and the fifth mounting surface. A fourth limiting platform is formed between the fifth mounting surface and the sixth mounting surface. The fourth joint surface is close to the outer surface of the half axle. The first joint surface and the fourth joint surface are coplanar. The sixth mounting surface coincides with the inner surface of the gear mounting seat.

10. A tractor half shaft casing as claimed in claim 9, wherein: A reinforcing plate is provided inside the second support part on the inner side of the sealing cavity. A connecting rib plate is provided between the reinforcing plate and the inner wall of the casing part.

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