CN219712242U - Gear box input gear - Google Patents
Gear box input gear Download PDFInfo
- Publication number
- CN219712242U CN219712242U CN202320445542.4U CN202320445542U CN219712242U CN 219712242 U CN219712242 U CN 219712242U CN 202320445542 U CN202320445542 U CN 202320445542U CN 219712242 U CN219712242 U CN 219712242U
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- CN
- China
- Prior art keywords
- annular
- input gear
- supporting seat
- gearbox input
- rubber ring
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- 238000007789 sealing Methods 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a gearbox input gear, and belongs to the technical field of machinery. The novel gearbox solves the problem that the existing gearbox is inconvenient to maintain. The gear box input gear comprises a cylinder body and bevel gear parts coaxially formed at the bottom of the cylinder body, annular steps for installing bearings are formed on inner walls of two ends of the cylinder body, an annular supporting seat is integrally formed on the inner walls of the cylinder body, the supporting seat is coaxial with the cylinder body and located between the two annular steps, a rubber ring matched with the supporting seat is embedded in the supporting seat, the outer side wall of the rubber ring is tightly contacted with the inner side wall of the supporting seat, and a limiting structure for limiting the axial movement of the rubber ring is arranged between the rubber ring and the supporting seat. The input gear of the gear box is beneficial to maintenance of the gear box.
Description
Technical Field
The utility model belongs to the technical field of machinery, and relates to a gear box, in particular to an input gear of a gear box.
Background
A gearbox is a mechanical device for increasing/decreasing by decelerating/increasing torque.
The existing gear box is a gear box (application number: 202221183549.5) disclosed in China patent library, comprising a box body, an output shaft horizontally and rotatably arranged in the box body, and an input shaft vertically arranged in the box body, wherein both ends of the output shaft and the lower end of the input shaft extend out of the box body, and the upper end of the input shaft is connected with the output shaft through a bevel gear structure; mounting holes for the output shaft to pass through are formed in two sides of the upper end of the pipe body, and the outer wall of the output shaft is sealed with the walls of the two mounting holes respectively through a first oil seal; the input shaft is hollow, the input shaft is sleeved outside the pipe body, the input shaft is rotationally connected with the pipe body through a first bearing, and the inner wall of the input shaft is sealed with the outer wall of the pipe body through a sealing piece; the bevel gear structure is arranged outside the tube body.
In the above-described gear box, the input shaft (i.e., the input gear) is rotatably supported on the tube body by a bearing, and the input shaft upper port is sealed by an upper bearing, so that the upper bearing should employ a hermetic bearing. However, in actual use, because the bearing has defective products, and the bearing is often found after a period of use, impurities such as dust can enter the box body through the upper bearing, and because the box body is filled with lubricating oil during normal use, the inside of the box body is required to be cleaned after the upper bearing is replaced, which is not beneficial to maintenance.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a gearbox input gear which is convenient for maintenance of a gearbox.
The aim of the utility model can be achieved by the following technical scheme: the gear box input gear comprises a barrel and bevel gears coaxially formed at the bottom of the barrel, annular steps for installing bearings are formed on inner walls of two ends of the barrel, and the gear box input gear is characterized in that an annular supporting seat is integrally formed on the inner walls of the barrel, the supporting seat is coaxial with the barrel and located between the two annular steps, a rubber ring matched with the supporting seat is embedded in the supporting seat, the outer side wall of the rubber ring is tightly contacted with the inner side wall of the supporting seat, and a limiting structure for limiting the axial movement of the rubber ring is arranged between the rubber ring and the supporting seat.
During actual installation, the input gear is rotatably supported on the gear box shaft body through the bearing, at the moment, the inner side wall of the rubber ring is pressed on the shaft body to form a seal between the two bearings, dust and other impurities leaked from the upper bearing are blocked outside, the impurities are effectively prevented from contacting with the lower bearing or the inside of the gear box body, and therefore the inside of the gear box is not required to be cleaned when the upper bearing is replaced, and the gear box has the advantage of convenience in maintenance.
In the above gear box input gear, the annular step is composed of an annular side face and an annular bottom face, the two annular bottom faces are in transitional connection with the inner side face of the supporting seat through a conical surface I, the diameter of the conical surface I gradually becomes smaller from the annular bottom face to the direction of the supporting seat, and the two conical surfaces I are symmetrically arranged along the center of the supporting seat. By adopting the design, the device has the advantages of simple structure and convenient processing.
In the gear box input gear, the limiting structure comprises two conical surfaces I, conical surfaces II matched with the corresponding conical surfaces I are formed on the outer side walls of the two ends of the rubber ring, and the conical surfaces I and the conical surfaces II which are corresponding in position are stuck together. The first conical surface and the second conical surface are matched, so that the axial limit of the rubber ring can be realized, and certain sealing is formed, so that the sealing path formed between the rubber ring and the cylinder body is prolonged, and the purpose of cleaning the gear box conveniently is realized stably.
As another scheme, in the gearbox input gear, the limiting structure comprises an annular groove formed in the outer side wall of the rubber ring and an annular blocking portion formed in the inner wall of the supporting seat, the shape and the size of the annular blocking portion are matched with those of the annular groove, and the annular blocking portion is embedded in the annular groove.
In the gearbox input gear, the annular cutter retracting groove is formed at the joint of the annular side face and the annular bottom face, the cutter retracting groove is coaxial with the cylinder body, and the axial section of the cutter retracting groove is arc-shaped. The tool withdrawal groove is used for withdrawing the tool during the machining of the annular step, and is convenient to design and machine.
In the gear box input gear, the rubber ring comprises an annular main body closely contacted with the inner side wall of the supporting seat and an annular sealing part integrally formed on the inner side wall of the annular main body, the conical surface II is arranged on the annular main body, and the axial length of the annular sealing part is smaller than that of the annular main body. By adopting the design, on the premise of ensuring that reliable sealing is formed between the rubber ring and the shaft body, the pretightening force applied to the rubber ring during loading is reduced by reducing the contact area of the rubber ring and the shaft body, so that the abrasion speed of the rubber ring is delayed, and the service life of the rubber ring is prolonged.
In the gearbox input gear, at least two annular sealing parts are arranged at intervals along the axial direction of the annular main body.
In the gearbox input gear, the number of the annular sealing parts is two, and the annular main body and the two annular sealing parts form an annular oil storage tank for filling lubricating grease so as to lubricate the contact part of the rubber ring and the shaft body and further prolong the service life of the rubber ring.
In the gearbox input gear, a circle of connecting holes are formed in the top of the cylinder body, and the axes of the connecting holes extend along the axial direction of the cylinder body.
In the gearbox input gear, the type of the connecting hole is a bolt hole, so that the input gear is convenient to connect with power equipment.
Compared with the prior art, the gearbox input gear has the following advantages:
1. during actual installation, the input gear is rotatably supported on the gear box shaft body through the bearing, at the moment, the inner side wall of the rubber ring is pressed on the shaft body to form a seal between the two bearings, dust and other impurities leaked from the upper bearing are blocked outside, the impurities are effectively prevented from contacting with the lower bearing or the inside of the gear box body, and therefore the inside of the gear box is not required to be cleaned when the upper bearing is replaced, and the gear box has the advantage of convenience in maintenance.
2. The first conical surface and the second conical surface are matched, so that the axial limit of the rubber ring can be realized, and certain sealing is formed, so that the sealing path formed between the rubber ring and the cylinder body is prolonged, and the purpose of cleaning the gear box conveniently is realized stably.
Drawings
Fig. 1 is a schematic diagram of the installation structure of the input gear of the gear box.
Fig. 2 is a schematic structural view of the cylinder.
Fig. 3 is a schematic structural view of the rubber ring.
In the figure, 1, a cylinder; 1a, a bevel gear part; 1b, annular steps; 1c, a tool retracting groove; 1d, a supporting seat; 1e, a conical surface I; 1f, connecting holes; 2. a rubber ring; 2a, a conical surface II; 2b, an annular body; 2c, an annular sealing part; 2d, an oil storage tank; 3. and (3) a bearing.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
Example 1
As shown in fig. 1, the input gear of the gear box comprises a cylinder body 1 and a conical tooth part 1a coaxially formed at the bottom of the cylinder body 1, wherein the conical tooth part 1a is coaxial with the cylinder body 1, and the outer diameter of the conical tooth part 1a gradually increases from top to bottom.
In particular the number of the elements,
annular steps 1b for installing the bearing 3 are formed on the inner walls of the two ends of the cylinder body 1, and the two annular steps 1b are symmetrically arranged. The annular step 1b is composed of an annular side surface and an annular bottom surface, an annular tool retracting groove 1c is formed at the joint of the annular side surface and the annular bottom surface, the tool retracting groove 1c is coaxial with the cylinder body 1, and the axial section of the tool retracting groove 1c is arc-shaped. The tool withdrawal groove 1c is used for withdrawing the tool during machining of the annular step 1b, and is convenient to design and machine.
As shown in fig. 1 and 2, an annular supporting seat 1d is integrally formed on the inner wall of the cylinder 1, the supporting seat 1d and the cylinder 1 are coaxial, and the supporting seat 1d is located between two annular steps 1 b. The supporting seat 1d is embedded with a rubber ring 2 matched with the supporting seat, at the moment, the outer side wall of the rubber ring 2 is tightly contacted with the inner side wall of the supporting seat 1d, and a limiting structure for limiting the axial movement of the rubber ring 2 is arranged between the rubber ring 2 and the supporting seat 1 d.
During actual installation, the input gear is rotatably supported on the gear box shaft body through the bearing 3, at the moment, the inner side wall of the rubber ring 2 presses on the shaft body to form a seal between the two bearings 3, dust and other impurities leaked from the upper bearing 3 are blocked outside, the impurities are effectively prevented from contacting the lower bearing 3 or the inside of the gear box, and therefore the inside of the gear box is not required to be cleaned when the upper bearing 3 is replaced, and the gear box has the advantage of convenience in maintenance.
Further, the two annular bottom surfaces are in transitional connection with the inner side surface of the supporting seat 1d through the first conical surface 1e, the diameter of the first conical surface 1e gradually decreases from the annular bottom surface to the direction of the supporting seat 1d, and the first conical surfaces 1e are symmetrically arranged along the center of the supporting seat 1 d. By adopting the design, the device has the advantages of simple structure and convenient processing.
In the present embodiment of the present utility model, in the present embodiment,
the limiting structure comprises two conical surfaces 1e, two conical surfaces 2a matched with the corresponding conical surfaces 1e are formed on the outer side walls of the two ends of the rubber ring 2, and the conical surfaces 1e and the conical surfaces 2a which are corresponding in position are stuck together. The first conical surface 1e and the second conical surface 2a are matched, so that the axial limit of the rubber ring 2 can be realized, and certain sealing is formed, so that the sealing path formed between the rubber ring 2 and the cylinder body 1 is prolonged, and the purpose of cleaning a gear box conveniently is realized stably.
As shown in fig. 1 and 3, the rubber ring 2 is of an integral structure, the rubber ring 2 comprises an annular main body 2b closely contacted with the inner side wall of the supporting seat 1d and an annular sealing part 2c integrally formed on the inner side wall of the annular main body 2b, wherein a conical surface two 2a is arranged on the annular main body 2b, and the axial length of the annular sealing part 2c is smaller than that of the annular main body 2 b. By adopting the design, on the premise of ensuring that reliable sealing is formed between the rubber ring 2 and the shaft body, the pretightening force applied to the rubber ring 2 during loading is reduced by reducing the contact area of the rubber ring 2, so that the abrasion speed of the rubber ring 2 is delayed, and the service life is prolonged. Further, at least two annular sealing portions 2c are arranged along the axial direction of the annular main body 2b at intervals, preferably two annular sealing portions 2c are arranged, an annular oil storage groove 2d for filling lubricating grease is formed between the annular main body 2b and the two annular sealing portions 2c, so that the contact position of the rubber ring 2 and the shaft body is lubricated, and the service life of the rubber ring 2 is further prolonged.
As shown in fig. 2, a circle of connecting holes 1f are formed in the top of the cylinder 1, and the axis of the connecting holes 1f extends along the axial direction of the cylinder 1. The type of the preferred connecting hole 1f is a bolt hole, which is convenient for connecting the input gear with the power equipment.
Example two
The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the limit structure comprises an annular groove formed in the outer side wall of the rubber ring 2 and an annular blocking portion formed in the inner wall of the supporting seat 1d, the shape and the size of the annular blocking portion are matched with those of the annular groove, and the annular blocking portion is embedded in the annular groove.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. The gearbox input gear comprises a barrel (1) and bevel gear parts (1 a) coaxially formed at the bottom of the barrel (1), annular steps (1 b) for installing bearings (3) are formed on inner walls of two ends of the barrel (1), and the gearbox input gear is characterized in that annular supporting seats (1 d) are integrally formed on the inner walls of the barrel (1), the supporting seats (1 d) are coaxial with the barrel (1) and located between the two annular steps (1 b), rubber rings (2) matched with the supporting seats are embedded in the supporting seats (1 d), the outer side walls of the rubber rings (2) are tightly contacted with the inner side walls of the supporting seats (1 d), and limiting structures for limiting the axial movement of the rubber rings (2) are arranged between the rubber rings (2) and the supporting seats (1 d).
2. The gearbox input gear according to claim 1, wherein the annular step (1 b) is formed by an annular side surface and an annular bottom surface, the annular bottom surfaces are in transitional connection with the inner side surface of the supporting seat (1 d) through conical surfaces one (1 e), the diameter of the conical surface one (1 e) is gradually reduced from the annular bottom surface to the direction of the supporting seat (1 d), and the two conical surfaces one (1 e) are arranged along the center of the supporting seat (1 d) symmetrically.
3. The gearbox input gear according to claim 2, wherein the limiting structure comprises two conical surfaces I (1 e), conical surfaces II (2 a) matched with the corresponding conical surfaces I (1 e) are formed on the outer side walls of the two ends of the rubber ring (2), and the conical surfaces I (1 e) and the conical surfaces II (2 a) which correspond to each other are adhered together.
4. The gearbox input gear according to claim 1 or 2, wherein the limiting structure comprises an annular groove formed in the outer side wall of the rubber ring (2) and an annular blocking portion formed in the inner wall of the supporting seat (1 d), the shape and the size of the annular blocking portion are matched with those of the annular groove, and the annular blocking portion is embedded in the annular groove.
5. Gearbox input gear according to claim 2, characterized in that the junction of annular side face and annular bottom face is provided with a circular relief groove (1 c), the relief groove (1 c) is coaxial with the cylinder (1), and the axial section of the relief groove (1 c) is circular arc.
6. A gearbox input gear according to claim 3, wherein the rubber ring (2) comprises an annular main body (2 b) closely contacting with the inner side wall of the supporting seat (1 d) and an annular sealing part (2 c) integrally formed on the inner side wall of the annular main body (2 b), the conical surface II (2 a) is arranged on the annular main body (2 b), and the axial length of the annular sealing part (2 c) is smaller than that of the annular main body (2 b).
7. Gearbox input gear according to claim 6, characterized in that the annular seals (2 c) are at least two and are spaced apart along the axial direction of the annular body (2 b).
8. Gearbox input gear according to claim 7, characterized in that there are two annular sealing parts (2 c), between which an annular oil reservoir (2 d) for filling with lubricating grease is formed between the annular body (2 b) and the two annular sealing parts (2 c).
9. Gearbox input gear according to claim 1, characterized in that a ring of connecting holes (1 f) is provided in the top of the cylinder (1), and the axis of the connecting holes (1 f) extends axially along the cylinder (1).
10. Gearbox input gear according to claim 9, characterized in that the connection holes (1 f) are of the bolt hole type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320445542.4U CN219712242U (en) | 2023-03-06 | 2023-03-06 | Gear box input gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320445542.4U CN219712242U (en) | 2023-03-06 | 2023-03-06 | Gear box input gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219712242U true CN219712242U (en) | 2023-09-19 |
Family
ID=87981393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320445542.4U Active CN219712242U (en) | 2023-03-06 | 2023-03-06 | Gear box input gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219712242U (en) |
-
2023
- 2023-03-06 CN CN202320445542.4U patent/CN219712242U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |