CN215214581U - Simple gear reduction box - Google Patents
Simple gear reduction box Download PDFInfo
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- CN215214581U CN215214581U CN202121259309.4U CN202121259309U CN215214581U CN 215214581 U CN215214581 U CN 215214581U CN 202121259309 U CN202121259309 U CN 202121259309U CN 215214581 U CN215214581 U CN 215214581U
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Abstract
The utility model discloses a simple and easy gear reduction box, include: a box body; an output shaft; the special-shaped gear is arranged in the box body and is fixedly arranged at the left end of the output shaft; a first groove is concavely arranged on the left end surface of the special-shaped gear, and a first internal gear is arranged on the inner circumferential surface of the first groove; a second groove is concavely arranged on the right side wall of the first groove, the axis of the second groove is collinear with the axis of the first groove, a second internal gear is arranged on the inner circumferential surface of the second groove, and the diameter of the second internal gear is smaller than that of the first internal gear; a first external gear meshed with the first internal gear; an input shaft; the second external gear is connected with the right end of the input shaft in a left-right sliding mode through a key bar; the second external gear can slide leftwards and is meshed with the first external gear, and can slide rightwards and is meshed with the second internal gear. Adopt the utility model discloses a transmission ratio can be adjusted to the reducing gear box, need not change the reducing gear box, and reduce cost improves work efficiency.
Description
Technical Field
The utility model relates to a reducing gear box technical field, in particular to simple and easy gear reduction box.
Background
The speed reducing box is used for low speed and large torque transmission equipment, and the motor, internal combustion engine or other high speed running power is meshed with the large gear on the output shaft through the gear with less teeth on the input shaft of the speed reducing box to reach the speed reducing purpose, and the ratio of the number of the large gear and the small gear is the transmission ratio. The transmission ratio of the existing reduction gearbox is always a fixed value, when the transmission ratio needs to be changed, another reduction gearbox with different transmission ratios is often used, the cost is high, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple and easy gear reduction box to when overcoming current reducing gear box and need changing the drive ratio, often need change the reducing gear box that another drive ratio is different, with high costs, shortcoming that work efficiency is low.
In order to achieve the above object, the utility model provides a simple gear reduction box, include: a box body, wherein a cavity is arranged in the box body; an output shaft rotatably mounted on a right side wall of the case; the special-shaped gear is arranged in the cavity and is fixedly arranged on the left end of the output shaft; a first groove is concavely arranged on the left end face of the special-shaped gear rightwards, the first groove is cylindrical, the axis of the first groove is distributed along the left-right direction, and a first internal gear is arranged on the inner circumferential surface of the first groove; a second groove is formed in the right side wall of the first groove in a rightward concave mode, the second groove is cylindrical, the axis of the second groove is collinear with the axis of the first groove, a second internal gear is arranged on the inner circumferential surface of the second groove, and the diameter of the second internal gear is smaller than that of the first internal gear; a first external gear rotatably mounted in the cavity, the first external gear and the first internal gear being engaged with each other; an input shaft rotatably mounted on a left side wall of the case; the second external gear is arranged in the cavity, is connected with the right end of the input shaft in a left-right sliding mode through a key bar and is fixed through a fixing device; the second external gear can slide leftwards and is meshed with the first external gear in a connected mode, and can slide rightwards and is meshed with the second internal gear in a connected mode.
Preferably, in the above technical solution, an operation window corresponding to the second external gear is opened on a left side wall of the box body.
Preferably, in the above technical solution, a left end surface of each tooth form of the second internal gear and a left end surface of each tooth form of the second external gear are both in a V shape facing right in a wide mouth direction, and a right end surface of each tooth form of the first external gear and a right end surface of each tooth form of the second external gear are both in a V shape facing left in a wide mouth direction.
Preferably, in the above technical solution, the fixing device includes a bolt, a fixing sleeve movably sleeved on the input shaft is disposed at the left end of the second external gear, a first positioning hole is disposed on the fixing sleeve, and two second positioning holes are disposed on the input shaft and distributed at left and right intervals and corresponding to the first positioning hole.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the second external gear can slide left and right, and is meshed with the first external gear or the second internal gear selectively, so that the transmission ratio of the reduction gearbox can be changed, the rotating speed of the output shaft of the reduction gearbox is adjusted, reduction gearboxes with different transmission ratios are not needed, the cost is reduced, the adjusting mode is simple and convenient, and the working efficiency is improved; the reduction gearbox adopts a structure of meshing transmission of the inner gear and the outer gear, has stable movement and stronger impact and vibration resistance, can reduce the space occupied between the gears, has compact structure and reduces the volume of the reduction gearbox.
2. The utility model discloses a left end face of every flute profile of second internal gear and the left end face of every flute profile of second external gear all are the V-arrangement that the wide mouthpart orientation was right, the right-hand member face of every flute profile of first external gear and the right-hand member face of every flute profile of second external gear all are the V-arrangement that the wide mouthpart was left, so that when driving second external gear horizontal slip, can be convenient for second external gear and first external gear or second internal gear intermeshing be connected, avoid appearing hitting the tooth phenomenon, thereby be convenient for carry out the speed governing operation of reducing gear box.
Drawings
Fig. 1 is a schematic structural view of a simple gear reduction box according to the present invention.
Description of the main reference numerals:
the gear comprises a cavity 1, an output shaft 2, a spline 3, a special-shaped gear 4, a second internal gear 5, a box 6, a first external gear 7, a second external gear 8, a fixed sleeve 9, an input shaft 10, a bolt 11, a first internal gear 12, a first groove 13, a second positioning hole 14 and a second groove 15.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Referring to fig. 1, a schematic structural diagram of a simple gear reduction box according to a preferred embodiment of the present invention is shown, and the gear reduction box includes a box body 6, an output shaft 2, a special-shaped gear 4, a first external gear 7, an input shaft 10 and a second external gear 8. Referring to fig. 1, a chamber 1 is provided in a case 6. Output shaft 2 is installed on the right side wall of box 6 with the mode that can rotate, and output shaft 2's left end is located cavity 1, and output shaft 2's right-hand member is located box 6 outsidely, is convenient for be connected with other outside equipment. The special-shaped gear 4 is arranged in the cavity 1, is fixedly arranged at the left end of the output shaft 2 and rotates synchronously with the output shaft 2. The left end face of the special-shaped gear 4 is provided with a first groove 13 which is concave towards the right, the first groove 13 is cylindrical, the axis of the first groove 13 is distributed along the left and right direction and is collinear with the axis of the output shaft 2, and the inner circumferential face of the first groove 13 is provided with a first inner gear 12. The right side wall of the first groove 13 is provided with a second groove 15 in a rightward concave mode, the second groove 15 is cylindrical, the axis of the second groove 15 is collinear with the axis of the first groove 13, the inner circumferential surface of the second groove 15 is provided with a second internal gear 5, and the diameter of the second internal gear 5 is smaller than that of the first internal gear 12. The first external gear 7 is rotatably mounted in the cavity 1, and the first external gear 7 and the first internal gear 12 are engaged with each other. The input shaft 10 is rotatably mounted on the left side wall of the box 6, the left end of the input shaft 10 is located outside the box 6, and the right end of the input shaft 10 is located in the cavity 1 and extends into the second groove 15. The second external gear 8 is arranged in the cavity 1, and the second external gear 8 is connected with the right end of the input shaft 10 in a left-right sliding mode through the key bar 3 and is fixed through a fixing device. The second external gear 8 can slide leftward and is engaged with the first external gear 7, and the second external gear 8 can slide rightward and is engaged with the second internal gear 5, and the second external gear 8 is fixed at a position engaged with the first external gear 7 or at a position engaged with the second internal gear 5 by a fixing means. By adopting the utility model, the second external gear 8 can slide left and right, and is meshed with the first external gear 7 or the second internal gear 5, so that the transmission ratio of the reduction gearbox can be changed, the rotating speed of the reduction gearbox output shaft 2 can be adjusted, reduction gearboxes with different transmission ratios do not need to be used, the cost is reduced, the adjusting mode is simple and convenient, and the working efficiency is improved; the reduction gearbox adopts a structure of meshing transmission of the inner gear and the outer gear, has stable movement and stronger impact and vibration resistance, can reduce the space occupied between the gears, has compact structure and reduces the volume of the reduction gearbox.
Referring to fig. 1, when the transmission ratio of the reduction box needs to be changed, the position of the second external gear 8 can be adjusted by opening the box body 6 and sliding left and right; or an operation window may be opened in the case 6 to perform adjustment without opening the case 6. Preferably, an operation window (not shown) corresponding to the second external gear 8 is formed on the left side wall of the case 6, so that the position of the second external gear 8 can be adjusted through the operation window.
Referring to fig. 1, preferably, the left end surface of each tooth of the second internal gear 5 and the left end surface of each tooth of the second external gear 8 are both in a V shape with a large opening facing right, and the right end surface of each tooth of the first external gear 7 and the right end surface of each tooth of the second external gear 8 are both in a V shape with a large opening facing left, so that when the second external gear 8 is driven to slide left and right, the second external gear 8 and the first external gear 7 or the second internal gear 5 can be conveniently engaged and connected with each other, the tooth collision phenomenon is avoided, and the speed regulation operation of the reduction gearbox is facilitated.
Referring to fig. 1, preferably, the fixing device includes a bolt 11, a fixing sleeve 9 movably sleeved on the input shaft 10 is disposed at the left end of the second external gear 8, a first positioning hole is disposed on the fixing sleeve 9, two second positioning holes 14 are disposed on the input shaft 10 and spaced left and right and correspond to the first positioning hole, one of the second positioning holes 14 is disposed opposite to the first external gear 7 to fix the second external gear 8 at a position where the second external gear 8 is engaged with the first external gear 7; another second positioning hole 14 is provided opposite the second internal gear 5 to fix the second external gear 8 at a position of engagement with the second internal gear 5. When the second external gear 8 needs to slide left and right, the meshing relation is adjusted, and the transmission ratio is changed, the second external gear 8 can slide left and right only by unlocking the bolt 11; after the second external gear 8 slides to the right position, the bolt 11 passes through the first positioning hole and the corresponding second positioning hole 14, and the position of the second external gear 8 can be fixed.
Adopt the utility model discloses a reducing gear box can be under the condition that does not remove reducing gear box and other part connections, changes the drive ratio of reducing gear box, and the variable speed process is simple and convenient, improves work efficiency, and need not change reducing gear box, reduce cost.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. A simple gear reduction box is characterized by comprising:
a box body, wherein a cavity is arranged in the box body;
an output shaft rotatably mounted on a right side wall of the case;
the special-shaped gear is arranged in the cavity and is fixedly arranged on the left end of the output shaft; a first groove is concavely arranged on the left end face of the special-shaped gear rightwards, the first groove is cylindrical, the axis of the first groove is distributed along the left-right direction, and a first internal gear is arranged on the inner circumferential surface of the first groove; a second groove is formed in the right side wall of the first groove in a rightward concave mode, the second groove is cylindrical, the axis of the second groove is collinear with the axis of the first groove, a second internal gear is arranged on the inner circumferential surface of the second groove, and the diameter of the second internal gear is smaller than that of the first internal gear;
a first external gear rotatably mounted in the cavity, the first external gear and the first internal gear being engaged with each other;
an input shaft rotatably mounted on a left side wall of the case; and
the second external gear is arranged in the cavity, is connected with the right end of the input shaft in a left-right sliding mode through a key bar and is fixed through a fixing device; the second external gear can slide leftwards and is meshed with the first external gear in a connected mode, and can slide rightwards and is meshed with the second internal gear in a connected mode.
2. The simple gear reducer according to claim 1, wherein an operation window corresponding to the second external gear is formed on a left side wall of the box body.
3. The simple gear reducer according to claim 1, wherein the left end face of each tooth profile of the second internal gear and the left end face of each tooth profile of the second external gear are both V-shaped with a large opening facing right, and the right end face of each tooth profile of the first external gear and the right end face of each tooth profile of the second external gear are both V-shaped with a large opening facing left.
4. The simple gear reducer according to claim 1, wherein the fixing device comprises a bolt, a fixing sleeve movably sleeved on the input shaft is disposed at the left end of the second external gear, a first positioning hole is disposed on the fixing sleeve, and two second positioning holes are disposed on the input shaft and spaced from each other in a left-right direction and correspond to the first positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121259309.4U CN215214581U (en) | 2021-06-07 | 2021-06-07 | Simple gear reduction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121259309.4U CN215214581U (en) | 2021-06-07 | 2021-06-07 | Simple gear reduction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214581U true CN215214581U (en) | 2021-12-17 |
Family
ID=79423864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121259309.4U Active CN215214581U (en) | 2021-06-07 | 2021-06-07 | Simple gear reduction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215214581U (en) |
-
2021
- 2021-06-07 CN CN202121259309.4U patent/CN215214581U/en active Active
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