CN217328170U

CN217328170U - Shaft end sealing structure and tillage machine

Info

Publication number: CN217328170U
Application number: CN202220880370.9U
Authority: CN
Inventors: 邓可; 叶烨; 邬碧云
Original assignee: Changsha Sanglaite Agricultural Mechanical Equipment Co Ltd
Current assignee: Changsha Sanglaite Agricultural Mechanical Equipment Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-30
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses a shaft end sealing structure and tillage machinery, which comprises a bearing arranged in a bearing seat, wherein a bearing sleeve is arranged on a rotating shaft, a flange plate is formed at one end of the rotating shaft, the end surface of the outer side of the flange plate is adjacent to the end surface of the inner side of the bearing seat, and a labyrinth structure is formed by combining concave-convex annular patterns of two adjacent end surfaces; the clearance of the labyrinth structure is provided with an oil seal. Through the setting, labyrinth structure can effectively prolong the distance that outside debris got into the bearing on the one hand to through the degree of difficulty that passes through of the form increase debris of buckling, on the other hand is through setting up the oil blanket in the passageway of labyrinth form, can effectively block to the debris that the bearing removed, thereby improves sealing performance, realizes blocking the dirt purpose.

Description

Shaft end sealing structure and tillage machine

Technical Field

The utility model mainly relates to the technical field of agricultural machinery, especially, relate to a shaft end seal structure and tillage machinery.

Background

At present, the rice planting in south China basically realizes mechanization, and the plowing and slurry-lifting operation of the farmland in the rice planting is basically completed by means of a plowing machine. The connecting mechanisms at two ends of the roller shaft of the existing tillage machinery are insufficient in sealing performance, and in the severe operating environment of a paddy field, mud and impurities easily break through an oil seal and enter a bearing, so that the structure is damaged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a shaft end seal structure and tillage machinery that sealing performance is excellent.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a shaft end sealing structure comprises a bearing arranged in a bearing seat, wherein the bearing is sleeved on a rotating shaft, a flange plate is formed at one end of the rotating shaft, the end surface of the outer side of the flange plate is adjacent to the end surface of the inner side of the bearing seat, and a labyrinth structure is formed by combining concave-convex annular patterns on two adjacent end surfaces; and oil seals are arranged in the gaps of the labyrinth structures.

As a further improvement of the above technical solution:

and a flange is formed at the inner side end of the bearing seat in an extending manner, the flange is embedded into the flange, and a thread groove for discharging sundries is formed on the adjacent surface of the flange and the flange.

The bearing has two, installs in the bearing frame side by side.

A retainer ring is pressed on the outer end surface of the bearing inner ring and is connected with the rotating shaft through a bolt; and baffle rings are respectively padded between the two end surfaces of the bearing outer ring and the bearing seat.

The labyrinth structure is formed with three annular cavities along the radial direction, and each annular cavity is provided with an oil seal.

The shaft end sealing structure further comprises an end cover, and the end cover is detachably mounted on the outer side of the bearing seat.

The end cover molding has the screw, detachably installs the plug screw in the screw.

A tillage machine comprises a cutter roller, wherein one end of the cutter roller is connected with the shaft end sealing structure.

As a further improvement of the above technical solution:

and one end of the knife roller, which is far away from the shaft end sealing structure, is connected with a side transmission system, and the side transmission system drives the knife roller to rotate.

The tillage machine further comprises a rack, wherein a connecting side plate is formed at one end of the rack, and the lower part of the connecting side plate is fixed between the bearing seat and the end cover through a bolt; the other end of the frame is connected with a side transmission system.

Compared with the prior art, the utility model has the advantages of:

the cross sections of the bearing seat and the bearing are concave, the cross sections of the rotating shaft and the flange are convex, and the rotating shaft is inserted in the outer end face of the flange in the bearing and is adjacent to the inner end face of the bearing seat. The bearing seat has several concave-convex ring grains formed in the inner end and the outer end, and the convex ring grains are embedded into the concave ring grains in adjacent end to form labyrinth passage. In order to avoid external impurities from entering the bearing through a labyrinth structure, an oil seal is filled in the labyrinth-shaped channel to seal a gap between the bearing seat and the flange. Through the setting, labyrinth structure can effectively prolong the distance that outside debris got into the bearing on the one hand to through the degree of difficulty that passes through of the form increase debris of buckling, on the other hand is through setting up the oil blanket in the passageway of labyrinth form, can effectively block to the debris that the bearing removed, thereby improves sealing performance, realizes blocking the dirt purpose.

Drawings

FIG. 1 is a schematic view of a tillage machine;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

fig. 3 is a partially enlarged schematic view at B in fig. 2.

The reference numerals in the figures denote: 1. a bearing seat; 11. a flange; 2. a bearing; 21. a retainer ring; 22. a baffle ring; 3. a rotating shaft; 4. a flange plate; 41. a thread groove; 5. a labyrinth structure; 51. an annular cavity; 6. oil sealing; 7. an end cap; 71. a screw hole; 72. a plug screw; 8. a knife roll; 9. a side transmission system; 10. a frame; 101. the side plates are connected.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 2 and 3, the shaft end sealing structure of the present embodiment includes a bearing 2 installed in a bearing seat 1, the bearing 2 is sleeved on a rotating shaft 3, one end of the rotating shaft 3 is formed with a flange 4, an end surface of an outer side of the flange 4 is adjacent to an end surface of an inner side of the bearing seat 1, and a labyrinth structure 5 is formed by combining concave-convex annular patterns of two adjacent end surfaces; the clearance of the labyrinth structure 5 is provided with an oil seal 6. The cross sections of the bearing seat 1 and the bearing 2 are concave, the cross sections of the rotating shaft 3 and the flange plate 4 are convex, and the rotating shaft 3 is inserted into the outer end face of the flange plate 4 in the bearing 2 and is adjacent to the inner end face of the bearing seat 1. The end surface of the inner side of the bearing seat 1 and the end surface of the outer side of the flange plate 4 are both formed with a plurality of concave-convex annular grains, and the convex annular grains are embedded into the concave annular grains of the adjacent end surfaces, so that a labyrinth-shaped channel, namely a labyrinth structure 5, is formed along the radial direction. In order to avoid external impurities from entering the bearing 2 through the labyrinth structure 5, an oil seal 6 is filled in the labyrinth-shaped channel to seal the gap between the bearing seat 1 and the flange plate 4. Through the setting, labyrinth 5 can effectively prolong the distance that outside debris got into bearing 2 on the one hand to through the degree of difficulty that passes through of the form increase debris of buckling, on the other hand through set up oil blanket 6 in the passageway of labyrinth form, can effectively block to the debris that bearing 2 removed, thereby improve sealing performance, realize blocking the dirt purpose.

In this embodiment, a flange 11 is formed at the inner end of the bearing housing 1 in an extending manner, the flange 4 is embedded in the flange 11, and a thread groove 41 for discharging impurities is formed on the adjacent surface of the flange 4 and the flange 11. By arranging the flange 11, the side surface of the flange plate 4 is wrapped by the flange 11, so that the length of a passage for sundries to enter the bearing 2 can be further prolonged. Moreover, a thread groove 41 is formed on the adjacent surface of the flange plate 4 and the flange 11, the thread direction of the thread groove 41 is matched with the rotation direction of the flange plate 4, and impurities in the groove can be pushed to be discharged outwards through the rotation of the thread groove 41. In other embodiments, the thread groove 41 can be formed on the inner wall of the flange 11.

In this embodiment, two bearings 2 are installed side by side in the bearing housing 1. The shaft end sealing structure is arranged at the end part of the outer knife roller, when the knife roller does not rotate along the central axis, the bearing 2 is extruded, and when the extrusion force exceeds the bearing limit, the bearing 2 can be damaged. Through setting up two bearings 2 side by side, can prolong the length that cup joints of bearing 2 and pivot 3 on the one hand to can strengthen the pressure that bears outside rotor blade disturbance and form to a certain extent, on the other hand can also utilize another bearing 2 to continue to maintain equipment operation when a bearing 2 became invalid, thereby can effectively promote axle head seal structure's stability and reliability.

In the embodiment, the outer end surface of the inner ring of the bearing 2 is provided with a retainer ring 21 in a pressing way, and the retainer ring 21 is connected with the rotating shaft 3 through a bolt; baffle rings 22 are padded between two end faces of the outer ring of the bearing 2 and the bearing seat 1. Through setting up retaining ring 21 and retaining ring 22, can fix the position of bearing 2 in bearing frame 1, avoid bearing 2 to take place to remove, influence the stability of structure along the axial in bearing frame 1.

In this embodiment, the labyrinth structure 5 is formed with three annular cavities 51 along the radial direction, and each annular cavity 51 is provided with an oil seal 6. A first convex ring is formed on the end face of the inner side of the bearing seat 1, a second convex ring is formed on the end face of the outer side of the flange plate 4, the two convex rings are concentric, and the first convex ring is positioned on the outer side of the second convex ring. The first protruding ring and the rotating shaft 3 are arranged at intervals to form an annular cavity 51, the first protruding ring and the second protruding ring are arranged at intervals to form another annular cavity 51, the second protruding ring and the outer wall of the bearing seat 1 are arranged at intervals to form another annular cavity 51, and oil seals 6 are filled in the three annular cavities 51 respectively, so that three layers of sealing are formed, and sundries can be blocked for three times.

In this embodiment, the shaft end sealing structure further includes an end cap 7, and the end cap 7 is detachably mounted on the outer side of the bearing seat 1. The end cap 7 is formed with a screw hole 71, and a screw plug 72 is detachably mounted in the screw hole 71. The end cover 7 is arranged to enclose the side end of the bearing seat 1 in the end cover 7 to form a closed environment, so that foreign matters are prevented from entering the bearing 2 from the end. Meanwhile, the arrangement of the screw hole 71 and the screw plug 72 can facilitate the oil injection inside the channel.

Example 2

Referring to fig. 1, the present invention discloses a tillage machine, which includes a cutter roll 8 in one embodiment, and one end of the cutter roll 8 is connected to the shaft end sealing structure of embodiment 1. The knife roll 8 is matched with the shaft end sealing structure, radial support is provided for the knife roll by the shaft end sealing structure, and the knife roll 8 rotates along the central axis to carry out farming operation.

In this embodiment, one end of the knife roller 8, which is far away from the shaft end sealing structure, is connected with the side transmission system 9, and the side transmission system 9 drives the knife roller 8 to rotate. The tillage machine also comprises a frame 10, wherein one end of the frame 10 is formed with a connecting side plate 101, and the lower part of the connecting side plate 101 is fixed between the bearing seat 1 and the end cover 7 through bolts; the other end of the frame 10 is connected with the side transmission system 9. The tillage machine further comprises a central transmission system, the central transmission system is located in the middle of the frame 10, and the central transmission system and the side transmission systems 9 realize force transmission together so as to drive the cutter roller 8 to rotate along the central axis to carry out farming operation. Meanwhile, a connecting side plate 101 is formed at one end of the frame 10, the connecting side plate is clamped between the bearing seat 1 and the end cover 7, mounting holes are formed in the bearing seat 1, the end cover 7 and the connecting side plate 101, and bolts penetrate through the mounting holes simultaneously to achieve connection and fixation of the bearing seat, the end cover and the connecting side plate.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a shaft end seal structure, is including installing bearing (2) in bearing frame (1), on pivot (3) was located in bearing (2) cover, its characterized in that: a flange plate (4) is formed at one end of the rotating shaft (3), the end face of the outer side of the flange plate (4) is adjacent to the end face of the inner side of the bearing seat (1), and a labyrinth structure (5) is formed by combining concave-convex annular patterns on two adjacent end faces; and an oil seal (6) is arranged in the gap of the labyrinth structure (5).

2. A shaft end seal structure according to claim 1, characterized in that: a flange (11) is formed at the inner side end of the bearing seat (1) in an extending mode, the flange plate (4) is embedded into the flange (11), and a thread groove (41) used for discharging sundries is formed in the adjacent surface of the flange plate (4) and the flange (11).

3. A shaft end seal structure according to claim 1, characterized in that: the two bearings (2) are arranged in the bearing seat (1) side by side.

4. A shaft end seal structure according to claim 3, characterized in that: a retainer ring (21) is pressed on the outer end surface of the inner ring of the bearing (2), and the retainer ring (21) is connected with the rotating shaft (3) through a bolt; and baffle rings (22) are padded between the two end surfaces of the outer ring of the bearing (2) and the bearing seat (1).

5. A shaft end seal structure according to claim 1, characterized in that: the labyrinth structure (5) is radially formed with three annular cavities (51), and each annular cavity (51) is internally provided with an oil seal (6).

6. A shaft end seal structure according to claim 1, characterized in that: the shaft end sealing structure further comprises an end cover (7), and the end cover (7) is detachably mounted on the outer side of the bearing seat (1).

7. An axial end seal structure according to claim 6, wherein: the end cover (7) is formed with a screw hole (71), and a screw plug (72) is detachably mounted in the screw hole (71).

8. A tillage machine characterized by: comprises a knife roller (8), wherein one end of the knife roller (8) is connected with the shaft end sealing structure of any one of claims 1-7.

9. The tiller of claim 8, wherein: one end, far away from the shaft end sealing structure, of the knife roller (8) is connected with a side transmission system (9), and the side transmission system (9) drives the knife roller (8) to rotate.

10. The tiller of claim 9, wherein: the tillage machine further comprises a rack (10), a connecting side plate (101) is formed at one end of the rack (10), and the lower part of the connecting side plate (101) is fixed between the bearing seat (1) and the end cover (7) through a bolt; the other end of the frame (10) is connected with a side transmission system (9).