CN216532482U - Rotary cultivator arbor seal structure - Google Patents
Rotary cultivator arbor seal structure Download PDFInfo
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- CN216532482U CN216532482U CN202123426661.5U CN202123426661U CN216532482U CN 216532482 U CN216532482 U CN 216532482U CN 202123426661 U CN202123426661 U CN 202123426661U CN 216532482 U CN216532482 U CN 216532482U
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Abstract
The utility model discloses a rotary tiller cutter shaft sealing structure, which comprises: the transmission box body is arranged on the outer side of the cutter shaft and used for installing a transmission part; the oil seal bushing is sleeved on the outer cylindrical surface of the cutter shaft; the end face combination oil seal is sleeved on the outer wall of the oil seal bushing; the framework oil seal is sleeved on the outer wall of the oil seal bushing and is tightly attached to one side of the end face combined oil seal; the deep groove ball bearing is sleeved on the cutter shaft and is tightly attached to the oil seal bushing; and the bearing block is used for installing and limiting the deep groove ball bearing, the framework oil seal and the end face combined oil seal. Has the advantages that: adopt the dual cooperation of end face combination oil blanket and skeleton oil blanket, can make end face combination oil blanket and the contact of oil blanket bush form end face seal, and ordinary skeleton oil blanket forms the circumference with the contact of oil blanket bush and seals, can increase outside silt and get into the inside degree of difficulty of bearing frame to supplementary carry out fully sealed with fender mud tray and bearing frame to the lateral wall of arbor, promote seal structure's reliability.
Description
Technical Field
The utility model relates to the technical field of agricultural equipment, in particular to a rotary tiller cutter shaft sealing structure.
Background
The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The soil breaking machine has the characteristics of strong soil breaking capacity, flat ground surface after ploughing and the like, so that the soil breaking machine is widely applied; meanwhile, the stubble buried below the ground surface can be cut up, the operation of the seeder is convenient, and a good seedbed is provided for later-stage seeding.
Wherein, the traditional seal structure of arbor adopts ordinary skeleton oil blanket and arbor to form sealed vice, and its defect lies in: the sealing structure is simple, the position of the cutter shaft sealing pair is extremely easy to wear, so that the reliability of the sealing pair is not high, only the whole cutter shaft can be replaced after the cutter shaft is worn, the use cost is high, meanwhile, because the field working environment is severe, in the operation process, the cutter shaft of the rotary cultivator is inevitably contacted with soil, especially in the paddy field operation, slurry is easy to damage the rotary sealing pair of the rotary tillage cutter shaft, and therefore the slurry enters the transmission gear box, lubricating oil in the box body is polluted, early wear of the bearing and the gear is caused, the service life of the rotary cultivator is shortened, and the use requirement in the current stage cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems, and provides a sealing structure for a rotary tiller cutter shaft, which aims to solve the technical problems that in the prior art, the sealing structure for the cutter shaft is simple, the cutter shaft of the rotary tiller is inevitably contacted with soil or slurry in the operation process, lubricating oil in a box body is polluted, early abrasion of a bearing and a gear is caused, the service life of the bearing and the gear is shortened, and the use cost is increased. According to the technical scheme, the end face combined oil seal and the framework oil seal are in double cooperation in the preferred technical scheme, the end face combined oil seal can be in contact with the oil seal bushing to form end face seal, the common framework oil seal is in contact with the oil seal bushing to form circumferential seal, the difficulty of external silt entering the bearing seat can be increased, the mud blocking disc and the bearing seat are used for assisting in fully sealing the side wall of the cutter shaft, and the technical effect of improving the reliability of the sealing structure is elaborated below.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a rotary tiller cutter shaft sealing structure, which comprises:
the transmission box body is arranged on the outer side of the cutter shaft and used for installing a transmission part;
the oil seal bushing is sleeved on the outer cylindrical surface of the cutter shaft;
the end face combination oil seal is sleeved on the outer wall of the oil seal bushing and tightly attached to the edge of the oil seal bushing;
the framework oil seal is sleeved on the outer wall of the oil seal bushing and is tightly attached to one side of the end face combined oil seal;
the deep groove ball bearing is sleeved on the cutter shaft and is tightly attached to the oil seal bushing;
and the bearing block is arranged on the transmission box body and used for installing and limiting the deep groove ball bearing, the framework oil seal and the end face combined oil seal.
Preferably, the cutter shaft is provided with a first shaft shoulder, and the first shaft shoulder is sleeved with a mud guard.
Preferably, the cutter shaft is provided with a second shoulder for fixing the oil seal bushing, and the second shoulder is positioned on one side of the first shoulder and is lower than the first shoulder in height.
Preferably, an O-ring is arranged on the inner wall of the oil seal bushing.
Preferably, the end face combination oil seal is provided with a small oil lip and a large oil lip, and the large oil lip is positioned on the outer side of the small oil lip.
Preferably, the end face combination oil seal is provided with a bending part, the bending part is positioned on the opposite side of the small oil lip and the large oil lip, and the bending part is sleeved with a spring ferrule.
Has the advantages that:
1. the end face combined oil seal and the framework oil seal are in double fit, so that the end face combined oil seal can be in contact with the oil seal bushing to form end face seal, the common framework oil seal is in contact with the oil seal bushing to form circumferential seal, the difficulty of external silt entering the bearing seat can be increased, the mud blocking disc and the bearing seat are used for assisting in fully sealing the side wall of the cutter shaft, and the reliability of a sealing structure is improved;
2. the end part of the bearing seat is provided with a storage groove for fixing the mud blocking disc, and after the deep groove ball bearing, the framework oil seal and the end surface combined oil seal are installed, the mud blocking disc is clamped into the storage groove, so that silt or grass chips in an operation environment can be prevented from entering the bearing seat, and the service life of the deep groove ball bearing is prolonged;
3. the second shaft shoulder can be used for clamping and limiting the check ring of the oil seal bushing, so that the oil seal bushing is prevented from sliding, and the positioning precision is improved;
4. an O-shaped sealing ring is designed, so that the inner wall of the oil seal bushing can be sealed, silt is prevented from being guided into a deep groove ball bearing from a gap between the cutter shaft and the oil seal bushing, and the sealing effect is further improved;
5. by adopting the structural design of double heavy oil lips, the end face combined oil seal can be pressed when being installed, and the elastic deformation of the oil lip on the end face combined oil seal is pressed on a check ring of an oil seal bush, so that the sealing property of the oil seal is ensured;
6. the design has the flexure, can utilize the spring ring to compress tightly the closure to the flexure when installation to make the flexure closely laminate on the arbor outer wall, thereby ensure the location effect of terminal surface combination oil blanket, avoid the terminal surface combination oil blanket to slide on the oil blanket bush.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a structural view of the mounting location of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a structural view of the end-face combination oil seal of the present invention;
fig. 4 is a partial enlarged view at a of the present invention.
The reference numerals are explained below:
1. a cutter shaft; 2. a transmission case body; 3. a bearing seat; 4. an oil seal bushing; 5. a first shoulder; 6. a second shoulder; 7. a mud guard; 8. end face combination oil seal; 9. framework oil seal; 10. an O-shaped ring; 11. a deep groove ball bearing; 12. a spring collar; 13. a large oil lip; 14. a small oil lip; 15. a flexure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a rotary tiller shaft sealing structure, including:
the transmission box body 2 is arranged on the outer side of the cutter shaft 1 and used for installing a transmission part, and a driving motor and a transmission gear are designed in the transmission box body 2 and can be matched with the cutter shaft to carry out power transmission;
the oil seal bushing 4 is sleeved on the outer cylindrical surface of the cutter shaft 1, can protect the cutter shaft 1, reduces the friction force between the cutter shaft 1 and the bearing seat 3 in the rotating process, prolongs the service life of the cutter shaft 1, is provided with a check ring on the end surface of the oil seal bushing 4, can be matched with the cutter shaft 1 for clamping and fixing, and reduces the installation difficulty, and it needs to be explained that the oil seal bushing 4 adopts bearing steel as a manufacturing material, has higher hardness and good wear resistance, can be independently replaced, and has low maintenance cost;
the end face combined oil seal 8 is sleeved on the outer wall of the oil seal bush 4 and tightly attached to the edge of the oil seal bush 4, and the end face combined oil seal 8 is matched with the oil seal bush 4 to realize first-layer protection and limit leakage of lubricating oil in the bearing;
the framework oil seal 9 is sleeved on the outer wall of the oil seal bushing 4 and is tightly attached to one side of the end face combined oil seal 8, further protection is realized by matching the end face combined oil seal 8 with the oil seal bushing 4, silt, dust, water vapor and the like in an external operation environment are prevented from entering the deep groove ball bearing 11 from the outside, normal work of the deep groove ball bearing 11 is ensured, the service life is prolonged, and the end face combined oil seal 8 and the framework oil seal 9 are both made of nitrile rubber, so that the service life can be prolonged, and the friction coefficient is reduced;
the deep groove ball bearing 11 is sleeved on the cutter shaft 1, the deep groove ball bearing 11 is tightly attached to the oil seal bushing 4, and the deep groove ball bearing 11 can be used for rotationally matching the bearing seat 3 and the cutter shaft 1 through the design of the deep groove ball bearing 11, so that the friction force during rotation is reduced, and the cutter shaft 1 is ensured to rotate smoothly;
bearing frame 3, the setting is on transmission case 2, be used for carrying on spacingly to deep groove ball bearing 11, skeleton oil blanket 9 and terminal surface combination oil blanket 8, the fixed slot that supplies deep groove ball bearing 11 joint to fix is offered on the bearing frame 3 surface, and offer the spacing groove of prescribing a limit to skeleton oil blanket 9 and terminal surface combination oil blanket 8, ensure that arbor 1 is rotating in-process deep groove ball bearing 11, the position of skeleton oil blanket 9 and terminal surface combination oil blanket 8 remains stable, avoid the skew, the stationarity when guaranteeing arbor 1 to rotate.
As shown in fig. 2, first shaft shoulder 5 has been seted up on arbor 1, suit or welding have fender mud dish 7 on first shaft shoulder 5, fender mud dish 7 sets up between first shaft shoulder 5 and bearing frame 3, the tip of bearing frame 3 is equipped with and is used for carrying out the storage tank fixed to fender mud dish 7, after deep groove ball bearing 11, skeleton oil blanket 9 and terminal surface combination oil blanket 8 installation, go into this storage tank with the fender card, and then can avoid silt or the grass bits among the operational environment to get into in bearing frame 3, extension deep groove ball bearing 11's life.
As shown in figure 2, offer the second shoulder 6 that is used for fixed oil blanket bush 4 on the arbor 1, second shoulder 6 is located one side of first shoulder 5, and highly is less than first shoulder 5, adopts the design of second shoulder 6, can carry out the joint spacing to the retaining ring of oil blanket bush 4 to avoid oil blanket bush 4 to slide, promote positioning accuracy.
As shown in fig. 2, the inner wall of the oil seal bush 4 is provided with an O-ring 10, and the inner wall of the oil seal bush 4 can be sealed by the design of the O-ring 10, so that sand and sand are prevented from being introduced into the deep groove ball bearing 11 from the gap between the cutter shaft 1 and the oil seal bush 4, and the sealing effect is further improved.
As shown in fig. 4, the end face combined oil seal 8 is provided with a small oil lip 14 and a large oil lip 13, the large oil lip 13 is located outside the small oil lip 14, the end face combined oil seal 8 can be compressed in installation through structural design of the double heavy oil lips, the elastic deformation of the oil lip of the end face combined oil seal 8 is compressed on the retainer ring of the oil seal bush 4, and the end face combined oil seal 8 is prevented from shaking.
As shown in fig. 4, the end face combination oil seal 8 is provided with a bending portion 15, the bending portion 15 is located on the opposite side of the small oil lip 14 and the large oil lip 13, the bending portion 15 is sleeved with a spring collar 12, the structural design of the bending portion 15 is designed, the bending portion 15 can be compressed and sealed by the spring collar 12 when being installed, so that the bending portion 15 can be tightly attached to the outer wall of the cutter shaft 1, the positioning effect of the end face combination oil seal 8 is ensured, the end face combination oil seal 8 is prevented from sliding on the oil seal bush 4, it should be noted that the bending portion 15 and the spring collar 12 are also designed on the framework oil seal 9, and the framework oil seal can be clamped and fixed when being installed.
When in installation, an operator firstly sleeves the mud blocking disc 7 on the cutter shaft 1, then sleeves the oil seal bushing 4 on the end part of the cutter shaft 1 for clamping and fixing, after fixing, pushes the end face combined oil seal 8 from the end part of the cutter shaft 1 and sleeves the oil seal bushing 4, after clamping and fixing, sleeves the spring ring 12 on the bending part 15 of the end face combined oil seal 8 so as to limit the end face combined oil seal 8, then sleeves the framework oil seal 9 on the oil seal bushing 4 and clings to the end face combined oil seal 8, also sleeves the spring ring 12 on the bending part 15 of the end face combined oil seal 8, after the installation is finished, sleeves the bearing seat 3 on the cutter shaft 1 and positions through the transmission box body 2, after the positioning is finished, pushes the deep groove ball bearing 11 to be clamped into the bearing seat 3 and tightly presses the framework oil seal 9 and the end face combined oil seal 8 to cling to the oil seal bushing 4, and finally clamps the mud blocking disc 7 into a storage groove in the bearing seat 3, namely, the whole installation process is completed;
adopt the dual cooperation of end face combination oil blanket 8 and skeleton oil blanket 9, can make end face combination oil blanket 8 and the contact of oil blanket bush 4 form end face seal, and ordinary skeleton oil blanket 9 forms the circumference with the contact of oil blanket bush 4 and seals, can increase the degree of difficulty that outside silt got into bearing frame 3 inside to supplementary with fender mud dish 7 and bearing frame 3 fully seal the lateral wall of arbor 1, promote seal structure's reliability
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a rotary cultivator arbor seal structure which characterized in that: the method comprises the following steps:
the transmission box body (2) is arranged on the outer side of the cutter shaft (1) and is used for installing a transmission piece;
the oil seal bushing (4) is sleeved on the outer cylindrical surface of the cutter shaft (1);
the end face combined oil seal (8) is sleeved on the outer wall of the oil seal bushing (4) and tightly attached to the edge of the oil seal bushing (4);
the framework oil seal (9) is sleeved on the outer wall of the oil seal bushing (4) and is tightly attached to one side of the end face combined oil seal (8);
the deep groove ball bearing (11) is sleeved on the cutter shaft (1), and the deep groove ball bearing (11) is tightly attached to the oil seal bushing (4);
and the bearing seat (3) is arranged on the transmission case body (2) and is used for installing and limiting the deep groove ball bearing (11), the framework oil seal (9) and the end face combined oil seal (8).
2. The rotary tiller shaft sealing structure of claim 1, wherein: a first shaft shoulder (5) is formed in the cutter shaft (1), and a mud blocking disc (7) is arranged on the first shaft shoulder (5).
3. The rotary tiller shaft sealing structure of claim 1, wherein: a second shaft shoulder (6) used for fixing the oil seal bushing (4) is arranged on the cutter shaft (1), and the second shaft shoulder (6) is located on one side of the first shaft shoulder (5) and is lower than the first shaft shoulder (5).
4. The rotary tiller shaft sealing structure of claim 1, wherein: and an O-shaped ring (10) is arranged on the inner wall of the oil seal bush (4).
5. The rotary tiller shaft sealing structure of claim 1, wherein: and a small oil lip (14) and a large oil lip (13) are arranged on the end face combined oil seal (8), and the large oil lip (13) is positioned on the outer side of the small oil lip (14).
6. The rotary tiller shaft sealing structure of claim 5, wherein: the end face combined oil seal (8) is provided with a bending part (15), the bending part (15) is positioned on the opposite side of the small oil lip (14) and the large oil lip (13), and the bending part (15) is sleeved with a spring ferrule (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123426661.5U CN216532482U (en) | 2021-12-31 | 2021-12-31 | Rotary cultivator arbor seal structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123426661.5U CN216532482U (en) | 2021-12-31 | 2021-12-31 | Rotary cultivator arbor seal structure |
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| Publication Number | Publication Date |
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| CN216532482U true CN216532482U (en) | 2022-05-17 |
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| CN202123426661.5U Active CN216532482U (en) | 2021-12-31 | 2021-12-31 | Rotary cultivator arbor seal structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145088A (en) * | 2021-12-31 | 2022-03-08 | 湖南农夫机电有限公司 | Rotary cultivator arbor seal structure |
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2021
- 2021-12-31 CN CN202123426661.5U patent/CN216532482U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145088A (en) * | 2021-12-31 | 2022-03-08 | 湖南农夫机电有限公司 | Rotary cultivator arbor seal structure |
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