CN214146500U - Milling machine speed reducer - Google Patents
Milling machine speed reducer Download PDFInfo
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- CN214146500U CN214146500U CN202022497294.7U CN202022497294U CN214146500U CN 214146500 U CN214146500 U CN 214146500U CN 202022497294 U CN202022497294 U CN 202022497294U CN 214146500 U CN214146500 U CN 214146500U
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Abstract
The utility model relates to a milling machine speed reducer, the key point of the technical proposal is that the milling machine speed reducer comprises a shell and a transmission device, the transmission device comprises a first transmission component and a second transmission component; the first transmission assembly comprises a driving shaft, a driving gear, a transmission idler wheel meshed with the driving gear and a driven gear meshed with the transmission idler wheel; the second transmission assembly comprises a sun wheel shaft, an input spline arranged at one end of the sun wheel shaft, an output sun wheel arranged at one end of the sun wheel shaft far away from the input spline, a transmission planet wheel meshed with the output sun wheel and a gear ring meshed with the transmission planet wheel; the sun wheel shaft and the driven gear are coaxially arranged and fixedly connected; the axes of the driving shaft and the sun wheel shaft are parallel to each other; the shell is fixed with a planet carrier seat; the sun wheel shaft is connected with the planet carrier seat in a rotating way around the axis of the sun wheel shaft; the utility model discloses can increase the ground clearance of milling machine speed reducer input, the destruction of external foreign matter to milling machine speed reducer input seal structure in the reduction work.
Description
Technical Field
The utility model relates to a speed reducer technical field especially relates to a milling machine speed reducer.
Background
A pavement milling machine, called milling machine for short, is one of the main machines of asphalt pavement maintenance construction machinery, is one of the main devices of asphalt concrete pavement maintenance construction, and is mainly used for excavating and renovating asphalt concrete surface courses of highways, town roads, airports, goods yards and the like. At present, the input end and the output end of a speed reducer for a milling drum of a milling machine are coaxial, so that the input end is closer to the ground, the input end is easy to contact impurities such as asphalt or cement milled by a milling cutter, and the input end of the speed reducer of the milling machine is easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a milling machine speed reducer through setting up first drive assembly and second drive assembly, through the radial distance between transmission idler increase input and the output to the ground clearance of increase milling machine speed reducer input reduces the destruction of external foreign matter to milling machine speed reducer input seal structure in the work.
The above technical purpose of the present invention can be achieved by the following technical solutions: a milling machine speed reducer comprises a shell and a transmission device arranged inside the shell, wherein the transmission device comprises a first transmission assembly and a second transmission assembly;
the first transmission assembly comprises a driving shaft, a driving gear arranged on the driving shaft, a transmission idler wheel meshed with the driving gear and a driven gear meshed with the transmission idler wheel;
the second transmission assembly comprises a sun wheel shaft, an input spline arranged at one end of the sun wheel shaft, an output sun wheel arranged at one end of the sun wheel shaft far away from the input spline, a transmission planet wheel meshed with the output sun wheel and a gear ring meshed with the transmission planet wheel;
the input spline is connected with the driven gear spline; the sun wheel shaft and the driven gear are coaxially arranged and fixedly connected; the axes of the driving shaft and the sun wheel shaft are parallel to each other; a planet carrier seat fixedly connected with the shell is arranged in the shell; the sun wheel shaft is connected with the planet carrier base in a rotating mode around the axis of the sun wheel shaft.
According to the technical scheme, when the milling machine speed reducer is used, power is input from the shaft end of the driving shaft, is transmitted to the input spline through the transmission idle wheel, and the sun wheel shaft is driven to rotate through the input spline; the power is transmitted to the transmission planet wheel through the output sun wheel of the sun wheel shaft, the transmission planet wheel drives the gear ring to rotate, and the power is output from the gear ring; because driving shaft and sun gear axle parallel arrangement, through the radial distance between the driven gear of the setting increase driving gear of transmission idler, under the condition of same drive ratio, increased the distance between milling machine speed reducer input and the output to can reduce the destruction to milling machine speed reducer input seal structure in the use.
Preferably, the input end of the driving shaft is provided with a belt flange, and the belt flange is connected with a spline of the driving shaft; the belt flange is connected with the input bearing seat in a rotating mode around the axis of the input bearing seat.
Through above-mentioned technical scheme, the engine passes through driving belt and links to each other with the belt flange, and then rotates through the drive belt flange, and then utilizes spline transmission, gives the driving shaft with power transmission.
Preferably, a bearing gland used for sealing the input bearing seat is arranged at the opening position of the input bearing seat; the belt flange axially penetrates through the bearing gland; and a framework oil seal is arranged on the inner wall of the bearing gland.
Through above-mentioned technical scheme, through the setting of bearing gland and skeleton oil blanket, and then the leakproofness of reinforcing driving shaft input reduces external dust foreign matter and enters into in the casing by the input.
Preferably, the transmission idler is provided with an idler shaft which is coaxial with the transmission idler, and the peripheral surface of the idler shaft is provided with a plurality of idler roller bearings for mounting the transmission idler; the transmission planet wheel is provided with a planet wheel shaft which is coaxial with the transmission planet wheel, and the circumferential surface of the planet wheel shaft is provided with a plurality of planet wheel roller bearings used for mounting the transmission planet wheel.
Through the technical scheme, the idler shaft and the planet wheel shaft are fixed on the frame part fixed with the shell, and the transmission idler and the transmission planet wheel are rotatably supported through the roller bearing, so that the transmission idler and the transmission planet wheel can be in efficient rotation transmission.
Preferably, adjacent idler roller bearings are provided with bearing spacers; and a positioning pin for axially positioning the idler roller bearing is fixed on the idler shaft at one side end face of the transmission idler.
Through the technical scheme, the bearing spacer rings are arranged on the adjacent idler roller bearings to axially separate the adjacent idler roller bearings, and then the idler roller bearings are radially positioned through the positioning pins, so that the idler roller bearings can be conveniently and quickly installed and positioned.
Preferably, the transmission idler wheel is provided with a plurality of lubricating holes which radially penetrate through the peripheral wall of the shaft hole of the transmission idler wheel.
Through above-mentioned technical scheme, through seting up the lubrication hole on the transmission idler, and then gear oil in the external environment can enter into idler roller bearing through the lubrication hole to can be good lubricate the maintenance to idler roller bearing.
Preferably, an upper planet carrier and a lower planet carrier are arranged in the shell, and the upper planet carrier, the lower planet carrier and the shell are detachably connected; the planet wheel shaft is fixedly connected with the downlink planet carrier.
Through the technical scheme, the upper planet carrier and the lower planet carrier which are detachably connected with the shell are adopted, so that the shape of the shell can be simplified, and when the shell is installed, the planet wheel, the gear ring and other parts can be conveniently installed and positioned from one end of the output end of the shell.
Preferably, an output bearing seat is arranged on the peripheral wall of the output end of the shell, and a support conical bearing is arranged between the output bearing seat and the shell; the inner ring of the support conical bearing is fixedly connected with the shell, and the outer ring of the support conical bearing is fixedly connected with the output shaft bearing seat; and the gear ring is fixedly connected with the output shaft bearing seat.
Through above-mentioned technical scheme, through using support conical bearing to install output bearing seat on the casing and be connected the ring gear with output bearing seat fixed, and then when carrying out the transmission to the ring gear, can be better fix a position the ring gear, make the state of ring gear more stable, transmission efficiency is higher.
Preferably, one end of the gear ring, which is far away from the shell, is provided with a rear cover for sealing the gear ring opening.
Through above-mentioned technical scheme, through the setting of back lid, seal the output one end of casing to it enters into the casing to reduce external foreign matter by the output of speed reducer.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a cross-sectional view of a milling machine reducer.
Fig. 2 is a schematic view of a drive idler mounting structure.
FIG. 3 is a schematic diagram showing the meshing relationship of the driving gear, the driven idler gear and the driven gear.
Wherein, 1, a shell; 11. an input bearing seat; 12. an output bearing seat; 13. a planet carrier mount; 14. An ascending planet carrier; 15. a downlink planet carrier; 2. a first transmission assembly; 21. a drive shaft; 22. a driving gear; 23. a transmission idler wheel; 231. an idler shaft; 232. an idler roller bearing; 233. a bearing spacer ring; 234. Positioning pins; 235. a lubrication hole; 24. a driven gear; 241. a driven conical bearing; 25. a belt flange; 251. a flange conical bearing; 3. a second transmission assembly; 31. a sun gear shaft; 32. an input spline; 33. an output sun gear; 34. a transmission planet wheel; 341. a planetary wheel shaft; 342. a planet wheel roller bearing; 35. a ring gear; 4. a bearing gland; 41. framework oil seal; 5. and (7) a rear cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b):
a milling machine speed reducer comprises a shell 1, an input bearing seat 11, an output bearing seat 12, a planet carrier seat 13, an upper planet carrier 14, a lower planet carrier 15 and a transmission device. The input bearing seat 11 is located at the input end of the shell 1 and is fixedly connected with the shell 1 through bolt connection. The output bearing seat 12 is located at the input end of the housing 1, and a support conical bearing is arranged between the output bearing seat 12 and the housing 1. The inner ring of the support conical bearing is fixedly connected with the shell 1, and the outer ring of the support conical bearing is fixedly connected with the output shaft bearing seat 12. The ring gear 35 is fixedly connected to the output bearing support 12, so that the output bearing support 12 can rotate circumferentially about its axis relative to the housing 1.
The transmission comprises a first transmission assembly 2 and a second transmission assembly 3. The first transmission assembly 2 includes a driving shaft 21, a driving gear 22 provided on the driving shaft 21, a transmission idle gear 23 engaged with the driving gear 22, and a driven gear 24 engaged with the transmission idle gear 23. The second transmission assembly 3 comprises a sun gear shaft 31, an input spline 32 arranged at one end of the sun gear shaft 31, an output sun gear 33 arranged at one end of the sun gear shaft 31 remote from the input spline 32, transmission planet gears 34 meshed with the output sun gear 33, and an annulus 35 meshed with the transmission planet gears 34. The input spline 32 is splined to the driven gear 24; the sun gear shaft 31 is coaxially arranged with the driven gear 24 and fixedly connected therewith; the axes of the drive shaft 21 and the sun gear shaft 31 are parallel to each other. When the milling machine speed reducer is used, power is input from the shaft end of the driving shaft 21, is transmitted to the input spline 32 through the transmission idle wheel 23, and drives the sun gear shaft 31 to rotate through the input spline 32; the power is transmitted to the transmission planetary gear 34 through the output sun gear 33 of the sun gear shaft 31, and the transmission planetary gear 34 drives the ring gear 35 to rotate, so that the power is output from the ring gear 35. Because the driving shaft 21 and the sun gear shaft 31 are arranged in parallel, the radial distance between the driven gears 24 of the driving gear 22 is increased through the arrangement of the transmission idle gear 23, and under the condition of the same transmission ratio, the distance between the input end and the output end of the speed reducer of the milling machine is increased, so that the damage to the sealing structure of the input end of the speed reducer of the milling machine in the using process can be reduced.
The input end of the driving shaft 21 is provided with a belt flange 25, the belt flange 25 is in splined connection with the driving shaft 21, and the driving shaft 21 is fixedly connected with the belt flange 25 through bolt connection. A flange conical bearing 251 is mounted on the hub of the belt flange 25, and the outer ring of the flange conical bearing 251 is fixedly mounted on the inner peripheral wall of the input bearing seat 11. The bearing gland 4 for sealing the input bearing seat 11 is arranged at the opening position of the input bearing seat 11, and the bearing gland 4 is fixedly pressed at the opening position of the input bearing seat 11 through bolt connection. The belt flange 25 axially penetrates through the bearing gland 4; the inner wall of the bearing gland 4 is provided with a skeleton oil seal 41. The opening of the bearing seat is sealed by the bearing gland 4 and the framework oil seal 41, so that the foreign matters outside can be effectively reduced from entering the input bearing seat 11. A driven conical bearing 241 is provided on the hub circumferential surface of the driven gear 24, and the outer ring of the driven conical bearing 241 is fixedly mounted on the housing 1, thereby rotatably supporting the driven gear 24. The outer side end faces of all the conical bearings are provided with adjusting pads, and the axial positions of the conical bearings are finely adjusted through the adjusting pads.
The gear ring 35 is located at the output end of the output bearing seat 12, and the end of the gear ring 35 away from the housing 1 is provided with a rear cover 5 for closing the opening of the gear ring 35. The rear cover 5 is located at the opening of the gear ring 35, and the rear cover 5 and the gear ring 35 are connected by using at least three mounting bolts which axially penetrate through the rear cover 5 and the gear ring 35 at the same time, and are in threaded engagement with the input bearing seat 11 by using the mounting bolts, so that the rear cover 5 and the gear ring 35 are pressed and fixed on the input bearing seat 11.
The upper planet carrier 14 and the lower planet carrier 15 are positioned through pin joint, and then the upper planet carrier 14 and the lower planet carrier 15 are relatively fixed through bolt connection. The upper carrier 14 and the lower carrier 15 are fixed in the housing 1 by being screwed to the housing 1 using mounting bolts that axially penetrate the upper carrier 14 and the lower carrier 15. The transmission planet wheels 34 are installed and positioned through the upper planet carrier 14 and the lower planet carrier 15.
The sun gear shaft 31 axially penetrates through the planet carrier base 13, and the sun gear shaft 31 is radially supported by the planet carrier base 13, so that the sun gear shaft 31 can stably rotate in the circumferential direction. When the planetary carrier base 13 is mounted in the housing 1, the planetary carrier base is positioned, and the upper carrier 14 and the lower carrier 15 are mounted. The planet carrier base 13 is in splined connection with the shell 1, the lower planet carrier 15 is in splined connection with the planet carrier base 13, the upper planet carrier 14 and the lower planet carrier 15 are quickly installed and positioned, the lower planet carrier 15 is fixedly connected with the shell 1 through bolts, and the shell 1, the planet carrier base 13, the upper planet carrier 14 and the lower planet carrier 15 are further fixed with each other.
The transmission idle gear 23 is provided with an idle gear shaft 231 coaxially arranged with the transmission idle gear 23, and a plurality of idle gear roller bearings 232 for mounting the transmission idle gear 23 are arranged on the circumferential surface of the idle gear shaft 231. The transmission planet wheel 34 is provided with a planet wheel shaft 341 which is coaxial with the transmission planet wheel 34, and the circumferential surface of the planet wheel shaft 341 is provided with a plurality of planet wheel roller bearings 342 used for installing the transmission planet wheel 34. Adjacent idler roller bearings 232 are provided bearing spacers 233. A positioning pin 234 for axially positioning the idler roller bearing 232 is fixed to the idler shaft 231 at one end surface of the transmission idler 23. The transmission idler wheel 23 and the transmission planet wheel 34 are in rotary connection through the roller bearing, so that efficient rotary transmission can be achieved, and transmission loss is small. The transmission idle wheel 23 is provided with a plurality of lubricating holes 235 which radially penetrate through the peripheral wall of the shaft hole. Through the setting of lubrication hole 235, and then gear oil in the external environment can enter into idler roller bearing 232 through lubrication hole 235 to can be good lubricate maintenance to idler roller bearing 232. The installation and positioning mode of the transmission planet wheel 34 and the planet wheel shaft 341 is the same as the installation and positioning mode of the transmission idle wheel 23 and the idle wheel shaft 231, and the description is omitted here.
The specific implementation principle of this embodiment is as follows:
when the milling machine speed reducer is used, power is input from the shaft end of the driving shaft 21, is transmitted to the input spline 32 through the transmission idle wheel 23, and drives the sun gear shaft 31 to rotate through the input spline 32; the power is transmitted to the transmission planet wheel 34 through the output sun wheel 33 of the sun wheel shaft 31, and then the transmission planet wheel 34 drives the gear ring 35 to rotate, and the power is output from the gear ring 35; because the driving shaft 21 and the sun gear shaft 31 are arranged in parallel, the radial distance between the driven gears 24 of the driving gear 22 is increased through the arrangement of the transmission idle gear 23, and the distance between the input end and the output end of the speed reducer of the milling machine is increased under the condition of the same transmission ratio. When carrying out the design and manufacturing to the milling machine speed reducer, through setting up the transmission idler 23 of different diameter sizes to can obtain the cooperation of the driving gear 22 and the driven gear 24 of different radial distances, thereby the user demand of the different operating modes of adaptation that can be more nimble.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The utility model provides a milling machine speed reducer, includes casing (1) and sets up the transmission in casing (1) inside, its characterized in that: the transmission device comprises a first transmission assembly (2) and a second transmission assembly (3);
the first transmission assembly (2) comprises a driving shaft (21), a driving gear (22) arranged on the driving shaft (21), a transmission idle gear (23) meshed with the driving gear (22) and a driven gear (24) meshed with the transmission idle gear (23);
the second transmission assembly (3) comprises a sun wheel shaft (31), an input spline (32) arranged at one end of the sun wheel shaft (31), an output sun wheel (33) arranged at one end, far away from the input spline (32), of the sun wheel shaft (31), a transmission planet wheel (34) meshed with the output sun wheel (33) and a gear ring (35) meshed with the transmission planet wheel (34);
the input spline (32) is in spline connection with the driven gear (24); the sun wheel shaft (31) and the driven gear (24) are coaxially arranged and fixedly connected; the axes of the driving shaft (21) and the sun wheel shaft (31) are parallel to each other; a planet carrier seat (13) fixedly connected with the shell (1) is arranged in the shell (1); the sun wheel shaft (31) is connected with the planet carrier base (13) in a rotating mode around the axis of the sun wheel shaft.
2. The milling machine speed reducer according to claim 1, wherein: the belt flange (25) is arranged at the input end of the driving shaft (21), and the belt flange (25) is in splined connection with the driving shaft (21); the belt conveyor is characterized in that an input bearing seat (11) used for installing a belt flange (25) is arranged at the driving shaft (21), the input bearing seat (11) is fixedly connected with the casing (1), and the belt flange (25) is rotatably connected with the input bearing seat (11) around the axis of the input bearing seat (11).
3. The milling machine speed reducer according to claim 2, wherein: a bearing gland (4) used for sealing the input bearing seat (11) is arranged at the opening position of the input bearing seat (11); the belt flange (25) axially penetrates through the bearing gland (4); and a framework oil seal (41) is arranged on the inner wall of the bearing gland (4).
4. The milling machine speed reducer according to claim 1, wherein: the transmission idle gear (23) is provided with an idle gear shaft (231) which is coaxial with the transmission idle gear (23), and the peripheral surface of the idle gear shaft (231) is provided with a plurality of idle gear roller bearings (232) for mounting the transmission idle gear (23); the transmission planet wheel (34) is provided with a planet wheel shaft (341) which is coaxial with the transmission planet wheel, and the circumferential surface of the planet wheel shaft (341) is provided with a plurality of planet wheel roller bearings (342) used for mounting the transmission planet wheel (34).
5. The milling machine speed reducer of claim 4, wherein: a bearing spacer ring (233) is arranged adjacent to the idler roller bearing (232); and a positioning pin (234) for axially positioning the idler roller bearing (232) is fixed on an idler shaft (231) on one side end face of the transmission idler (23).
6. The milling machine speed reducer of claim 4, wherein: the transmission idle wheel (23) is provided with a plurality of lubricating holes (235) which radially penetrate through the peripheral wall of the shaft hole of the transmission idle wheel.
7. The milling machine speed reducer of claim 4, wherein: an upper planet carrier (14) and a lower planet carrier (15) are arranged in the shell (1), and the upper planet carrier (14), the lower planet carrier (15) and the shell (1) are detachably connected; the planet wheel shaft (341) is fixedly connected with the downlink planet carrier (15).
8. The milling machine speed reducer according to claim 1, wherein: an output bearing seat (12) is arranged on the peripheral wall of the output end of the shell (1), and a support conical bearing is arranged between the output bearing seat (12) and the shell (1); the inner ring of the support conical bearing is fixedly connected with the shell (1), and the outer ring of the support conical bearing is fixedly connected with the output bearing seat (12); and the gear ring (35) is fixedly connected with the output shaft bearing seat (12).
9. The milling machine speed reducer according to claim 1, wherein: and one end of the gear ring (35), which is far away from the shell (1), is provided with a rear cover (5) for sealing the opening of the gear ring (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497294.7U CN214146500U (en) | 2020-11-02 | 2020-11-02 | Milling machine speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497294.7U CN214146500U (en) | 2020-11-02 | 2020-11-02 | Milling machine speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214146500U true CN214146500U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022497294.7U Active CN214146500U (en) | 2020-11-02 | 2020-11-02 | Milling machine speed reducer |
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| Country | Link |
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| CN (1) | CN214146500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380225A (en) * | 2021-12-29 | 2022-04-22 | 江苏汇智高端工程机械创新中心有限公司 | Compact hoist speed reducer |
-
2020
- 2020-11-02 CN CN202022497294.7U patent/CN214146500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380225A (en) * | 2021-12-29 | 2022-04-22 | 江苏汇智高端工程机械创新中心有限公司 | Compact hoist speed reducer |
| CN114380225B (en) * | 2021-12-29 | 2023-09-26 | 江苏汇智高端工程机械创新中心有限公司 | Compact winch speed reducer |
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