CN214036796U - Crawler walking speed reducer - Google Patents
Crawler walking speed reducer Download PDFInfo
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- CN214036796U CN214036796U CN202023085620.XU CN202023085620U CN214036796U CN 214036796 U CN214036796 U CN 214036796U CN 202023085620 U CN202023085620 U CN 202023085620U CN 214036796 U CN214036796 U CN 214036796U
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Abstract
The utility model relates to a speed reducer technical field, a crawler travel speed reducer is proposed, drive gear axle and main shaft in including the casing and locating the casing, it sets up in the casing to rotate by motor drive's drive gear axle, spindle nose fixedly connected with third gear, the third gear meshes with the gear of drive gear axle mutually, the output of main shaft is connected with the planetary gear train, the casing bolt is on the planet carrier terminal surface of planetary gear train, drive gear shaft symmetry is provided with two, the housing face is equipped with the guide rail, be equipped with the guide block corresponding with the guide rail on the planet carrier terminal surface, two drive gear axles can alternate with the third gear meshing with the guide block with the help of the guide rail, be equipped with a set of screw hole corresponding with two extreme positions of casing on the planet carrier terminal surface. Through above-mentioned technical scheme, the drive shaft fragile and the troublesome technical problem of maintenance of speed reducer among the prior art has been solved.
Description
Technical Field
The utility model relates to a speed reducer technical field, it is specific relates to a crawler travel speed reducer.
Background
The speed reducer is an independent component consisting of gear transmission, worm transmission and gear-worm transmission which are enclosed in a rigid shell, is commonly used as a speed reduction transmission device between a prime mover and a working machine, plays a role in matching rotating speed and transmitting torque between the prime mover and the working machine or an actuating mechanism, and is widely applied to modern machinery, such as aircrafts and automobiles. The driving shaft of the existing speed reducer bears huge force and is the element which is most easily damaged in the speed reducer, and when the driving shaft is damaged, the speed reducer needs to be disassembled for maintenance, which wastes time and labor; aiming at the problems, the prior art does not well solve the problems, and troubles are brought to the normal operation of the work in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a crawler travel speed reducer has solved the drive shaft fragile of speed reducer among the correlation technique and has maintained the trouble problem.
The technical scheme of the utility model as follows: the utility model provides a crawler travel speed reducer, includes the casing and locates drive gear axle and main shaft in the casing, by motor drive's drive gear axle rotate set up in the casing, main shaft tip fixedly connected with third gear, the third gear with the gear of drive gear axle meshes mutually, the output of main shaft is connected with the planetary gear train, the casing bolt in on the planet carrier terminal surface of planetary gear train, drive gear axial symmetry is provided with two, the casing terminal surface is equipped with the guide rail, be equipped with on the planet carrier terminal surface with the corresponding guide block of guide rail, two drive gear axles with the help of guide rail and guide block can alternate with the third gear engagement, be equipped with on the planet carrier terminal surface with the corresponding a set of screw hole in two meshing positions of drive gear axle.
As a further technical scheme, the planetary gear train comprises a central gear shaft, a first planet wheel, a first planet carrier, a second planet wheel, a second planet carrier and a gear ring, the input end of the central gear shaft is fixedly connected with the output end of the main shaft, the central gear shaft is provided with a first gear and a second gear, a group of first planet gears are meshed and connected between the first gear and the gear ring by means of a first planet carrier, a group of second planet gears are meshed and connected between the second gear and the gear ring by means of a second planet carrier, the shell, the first planet carrier and the second planet carrier are sequentially fixedly connected end to end by means of end surfaces, the threaded hole is formed in the end face of the first planet carrier, an end cover is arranged at the output end of the central gear shaft, and the gear ring is arranged between the end cover and the first planet carrier.
As a further technical scheme, bearings are arranged between the driving gear shaft and the housing, between the main shaft and the first planet carrier, between the first planet gear and the axle of the first planet carrier, and between the second planet gear and the axle of the second planet carrier.
As a further technical scheme, the end faces of the first planet wheel and the second planet wheel are both provided with positioning gaskets, and a buffer gasket is arranged between the central gear shaft and the end cover.
As a further technical scheme, a floating oil seal is arranged between the gear ring and the first planet carrier in a sealing mode.
As a further technical scheme, the input end of the driving gear shaft is provided with a framework oil seal in a sealing mode.
The utility model discloses a theory of operation does: a driving gear shaft and a main shaft are rotationally arranged in the shell, a third gear is fixedly connected to the end part of the main shaft and is meshed with the gear of the driving gear shaft, the output end of the main shaft is connected with a planetary gear train, the shell is bolted to the end surface of a planet carrier of the planetary gear train, two driving gear shafts are symmetrically arranged, the end surface of the shell is provided with a guide rail, the end surface of the planet carrier is provided with a guide block corresponding to the guide rail, the two driving gear shafts are alternatively meshed with the third gear by virtue of the guide rail and the guide block, the end surface of the planet carrier is provided with a group of threaded holes corresponding to two meshing positions of the driving gear shafts and used for positioning the shell, and the two driving gear shafts are alternatively used according to the situation, when one driving gear shaft is damaged, the other driving gear shaft can be quickly and conveniently replaced, and the speed reducer does not need to be disassembled, so that good centering performance is ensured, and the probability of work delay caused by the failure of the speed reducer is reduced; the motor shaft is used as the main power, the power input by the driving gear shaft is transmitted through a series of transmissions, the effect of improving the transmission ratio and the rotating torque is achieved, the driving gear shaft is rotatably arranged in the shell, the driving gear shaft is meshed with the third gear, the third gear is fixedly connected to the end part of the main shaft, so that the power is transmitted to the main shaft, a planetary gear train is additionally arranged at the output end of the main shaft, the planetary gear train comprises a central gear shaft, a first planetary gear, a second planetary gear and a gear ring main shaft, the central gear shaft is fixedly connected with the central gear shaft, a first gear and a second gear are arranged on the central gear shaft, the first gear is meshed with the first planetary gear, the second gear is meshed with the second planetary gear, the shell, the first planet carrier and the second planet carrier are sequentially connected end to end by screws, a group of first planetary gears is meshed with the gear teeth of the gear ring inner ring by means of a wheel shaft on the first planet carrier, the group of second planet gears are meshed with gear teeth of the inner ring of the gear ring by virtue of a gear shaft on the second planet carrier, the output end of the central gear shaft is provided with an end cover, the gear ring is rotatably arranged between the end cover and the first planet carrier, the main shaft rotates, and the first gear and the second gear also rotate along with the rotation of the main shaft to drive the rotation of the first planet gears and the rotation of the second planet gears; bearings are arranged between the driving gear shaft and the shell, between the main shaft and the first planet carrier, between the first planet gear and the wheel shaft of the first planet carrier, and between the second planet gear and the wheel shaft of the second planet carrier, and are used for supporting two adjacent rotating bodies, reducing the friction coefficient of the two rotating bodies and ensuring the rotation precision of the two rotating bodies; the end faces of the first planet wheel and the second planet wheel are respectively provided with a positioning gasket, so that the accurate position of the two planet wheels is ensured, and the bearing is prevented from falling off; a floating oil seal is hermetically arranged between the gear ring and the first planet carrier and is used for isolating dust, water, sludge and the like and preventing lubricating oil inside from leaking; the sealed skeleton oil blanket that is equipped with of input of drive gear axle plays isolated external environment's effect, prevents that lubricating oil from leaking, prevents external dust, impurity simultaneously and gets into.
The utility model has the advantages that: two drive gear axles use according to the circumstances in turn, when one of them drive gear axle damages, can be fast convenient change for another, and need not to dismantle the speed reducer, convenient and fast has guaranteed good centering nature, has reduced because of the speed reducer breaks down the probability of delaying work.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the internal structure of the speed reducer of the present invention;
in the figure:
1. the gear comprises a shell, 2, a driving gear shaft, 3, a main shaft, 4, a third gear, 5, a central gear shaft, 6, a first planet gear, 7, a second planet gear, 8, a gear ring, 9, a first gear, 10, a second gear, 11, a first planet carrier, 12, a second planet carrier, 13, an end cover, 14, a bearing, 15, a positioning gasket, 16, a buffer gasket, 17, a floating oil seal, 18, a guide rail, 19, a guide block, 20, a threaded hole, 21 and a framework oil seal.
Detailed Description
A crawler belt walking speed reducer comprises a shell 1, a driving gear shaft 2 and a main shaft 3 which are arranged in the shell 1, wherein the driving gear shaft 2 driven by a motor is rotationally arranged in the shell 1, the end part of the main shaft 3 is fixedly connected with a third gear 4, the third gear 4 is meshed with the gear of the driving gear shaft 2, the output end of the main shaft 3 is connected with a planetary gear train, the shell 1 is bolted on the end surface of a planet carrier of the planetary gear train, two driving gear shafts 2 are symmetrically arranged, a guide rail 18 is arranged on the end surface of the shell 1, a guide block 19 corresponding to the guide rail 18 is arranged on the end surface of the planet carrier, the two driving gear shafts 2 can be alternatively meshed with the third gear 4 by the guide rail 18 and the guide block 19, a group of threaded holes 20 corresponding to the two meshing positions of the driving gear shaft 2 are arranged on the end surface of the planet carrier.
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
As shown in fig. 1, the present embodiment provides a crawler belt walking speed reducer, which includes a housing 1, and a driving gear shaft 2 and a main shaft 3 disposed in the housing 1, wherein the driving gear shaft 2 driven by a motor is rotatably disposed in the housing 1, the end part of the main shaft 3 is fixedly connected with a third gear 4, the third gear 4 is meshed with the gear of the driving gear shaft 2, the output end of the main shaft 3 is connected with a planetary gear train, the shell 1 is bolted on the end surface of a planet carrier of the planetary gear train, two driving gear shafts 2 are symmetrically arranged, a guide rail 18 is arranged on the end surface of the shell 1, a guide block 19 corresponding to the guide rail 18 is arranged on the end surface of the planet carrier, the two driving gear shafts 2 can be alternatively meshed with the third gear 4 by the guide rail 18 and the guide block 19, a group of threaded holes 20 corresponding to the two meshing positions of the driving gear shaft 2 are arranged on the end surface of the planet carrier.
In the embodiment, a driving gear shaft 2 and a main shaft 3 are rotatably arranged in a housing 1, the end of the main shaft 3 is fixedly connected with a third gear 4, the third gear 4 is engaged with a gear of the driving gear shaft 2, the output end of the main shaft 3 is connected with a planetary gear train, the housing 1 is bolted on the end surface of a planet carrier of the planetary gear train, the two driving gear shafts 2 are symmetrically arranged, the end surface of the housing 1 is provided with a guide rail 18, the end surface of the planet carrier is provided with a guide block 19 corresponding to the guide rail 18, the two driving gear shafts 2 are alternately engaged with the third gear 4 by the guide rail 18 and the guide block 19, the end surface of the planet carrier is provided with a group of threaded holes 20 corresponding to the two engagement positions of the driving gear shafts 2 for positioning of the housing 1, the two driving gear shafts 2 are alternately used according to the situation, when one driving gear shaft 2 is damaged, the other driving gear shaft can be quickly and conveniently replaced without disassembling a speed reducer, the good centering performance is ensured, and the probability of work delay caused by the fault of the speed reducer is reduced.
As shown in fig. 1, further, it also includes,
the planetary gear train comprises a sun gear shaft 5, a first planet wheel 6, a first planet carrier 11, a second planet wheel 7, a second planet carrier 12 and a ring gear 8, the input end of the central gear shaft 5 is fixedly connected with the output end of the main shaft 3, the central gear shaft 5 is provided with a first gear 9 and a second gear 10, a group of first planet gears 6 are meshed and connected between the first gear 9 and the gear ring 8 through a first planet carrier 11, a group of second planet gears 7 are meshed and connected between the second gear 10 and the gear ring 8 through a second planet carrier 12, the shell 1, the first planet carrier 11 and the second planet carrier 12 are sequentially fixedly connected end to end by means of end surfaces, the threaded hole 20 is formed in the end face of the first planet carrier 11, the output end of the central gear shaft 5 is provided with an end cover 13, and the gear ring 8 is arranged between the end cover 13 and the first planet carrier 11.
In the embodiment, a motor shaft is used as a main power, the power input by a driving gear shaft 2 is transmitted in a series of ways to achieve the effects of improving the transmission ratio and the rotating torque, the driving gear shaft 2 is rotatably arranged in a shell 1, the driving gear shaft 2 is meshed with a third gear 4, the third gear 4 is fixedly connected to the end part of a main shaft 3 so as to transmit the power to the main shaft 3, a planetary gear train is additionally arranged at the output end of the main shaft 3 and comprises a central gear shaft 5, a first planetary gear 6, a second planetary gear 7 and a gear ring 8, the central gear shaft 5 is provided with a first gear 9 and a second gear 10, the first gear 9 is meshed with the first planetary gear 6, the second gear 10 is meshed with the second planetary gear 7, the shell 1, the first planet carrier 11 and the second planet carrier 12 are sequentially connected end to end by end screws, a group of first planet gears 6 are meshed with the gear teeth of the inner ring of a gear ring 8 by means of a wheel shaft on a first planet carrier 11, a group of second planet gears 7 are meshed with the gear teeth of the inner ring of the gear ring 8 by means of a wheel shaft on a second planet carrier 12, an end cover 13 is arranged at the output end of a central gear shaft 5, the gear ring 8 is rotatably arranged between the end cover 13 and the first planet carrier 11, a main shaft 3 rotates, a first gear 9 and a second gear 10 also rotate along with the first planet gears to drive the first planet gears 6 and the second planet gears 7 to rotate, and the rotation of the planet gears can drive the gear ring 8 to rotate because the two planet carriers are fixed, so that the effect of increasing the rotating torque is achieved, the function of a speed reducer is achieved by adopting a planetary gear train mode, the machine body is small in size and light in weight.
As shown in fig. 1, further, it also includes,
In this embodiment, bearings 14 are disposed between the driving gear shaft 2 and the housing 1, between the main shaft 3 and the first planet carrier 11, between the first planet gear 6 and the axle of the first planet carrier 11, and between the second planet gear 7 and the axle of the second planet carrier 12, so as to support two adjacent rotating bodies, reduce the friction coefficient of the two rotating bodies, and ensure the rotation precision of the two rotating bodies.
As shown in fig. 1, further, it also includes,
the end face of the first planet wheel 6 and the end face of the second planet wheel 7 are both provided with positioning gaskets 15, and a buffer gasket 16 is arranged between the central gear shaft 5 and the end cover 13.
In the embodiment, the end surfaces of the first planet wheel 6 and the second planet wheel 7 are provided with positioning gaskets 15, so that the accurate positions of the two planet wheels are ensured, and the bearing 14 is prevented from falling off; be equipped with buffer pad 17 between sun gear shaft 5 and the end cover, play the buffering and inhale the shake effect, buffer pad 16 adopts the nylon packing ring, and the nylon packing ring has excellent insulating nature, and heat-resisting corrosion-resistant.
As shown in fig. 1, further, it also includes,
a floating oil seal 17 is arranged between the gear ring 8 and the first planet carrier 11 in a sealing manner.
In this embodiment, a floating oil seal 17 is hermetically provided between the ring gear 8 and the first carrier 11 to isolate dust, water, sludge, and the like, thereby preventing leakage of the lubricating oil inside.
As shown in fig. 1, further, it also includes,
and the input end of the driving gear shaft 2 is provided with a framework oil seal 21 in a sealing way.
In this embodiment, the input end of the driving gear shaft 2 is provided with the framework oil seal 21 in a sealing manner, so that the function of isolating the external environment is achieved, the leakage of lubricating oil is prevented, and meanwhile, the entering of external dust and impurities is prevented.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A crawler traveling speed reducer comprises a shell (1), a driving gear shaft (2) and a main shaft (3), wherein the driving gear shaft (2) and the main shaft (3) are arranged in the shell (1) in a rotating mode, the driving gear shaft (2) is driven by a motor to be arranged in the shell (1), the end portion of the main shaft (3) is fixedly connected with a third gear (4), the third gear (4) is meshed with gears of the driving gear shaft (2), the output end of the main shaft (3) is connected with a planetary gear train, the shell (1) is bolted to the end face of a planet carrier of the planetary gear train, the crawler traveling speed reducer is characterized in that the two driving gear shafts (2) are symmetrically arranged, guide rails (18) are arranged on the end face of the shell (1), guide blocks (19) corresponding to the guide rails (18) are arranged on the end face of the planet carrier, the two driving gear shafts (2) can be alternatively meshed with the third gear (4) by means of the guide rails (18) and the guide blocks (19), and a group of threaded holes (20) corresponding to the two meshing positions of the driving gear shaft (2) are formed in the end surface of the planet carrier.
2. A crawler belt walking reducer according to claim 1, wherein the planetary gear train comprises a sun gear shaft (5), a first planet gear (6), a first planet carrier (11), a second planet carrier (7), a second planet carrier (12) and a gear ring (8), the input end of the sun gear shaft (5) is fixedly connected with the output end of the main shaft (3), the sun gear shaft (5) is provided with a first gear (9) and a second gear (10), a set of the first planet gears (6) are engaged and connected between the first gear (9) and the gear ring (8) by means of the first planet carrier (11), a set of the second planet gears (7) are engaged and connected between the second gear (10) and the gear ring (8) by means of the second planet carrier (12), the housing (1), the first planet carrier (11) and the second planet carrier (12) are sequentially and fixedly connected end to end by means of end surfaces, the threaded hole (20) is formed in the end face of the first planet carrier (11), the output end of the central gear shaft (5) is provided with an end cover (13), and the gear ring (8) is arranged between the end cover (13) and the first planet carrier (11).
3. A track reduction gear according to claim 2, characterized in that bearings (14) are arranged between the drive gear shaft (2) and the housing (1), between the main shaft (3) and the first planet carrier (11), between the first planet gears (6) and the axles of the first planet carrier (11), and between the second planet gears (7) and the axles of the second planet carrier (12).
4. The crawler belt walking reducer according to claim 2, wherein the end surfaces of the first planet wheel (6) and the second planet wheel (7) are provided with positioning spacers (15), and a buffer spacer (16) is arranged between the central gear shaft (5) and the end cover (13).
5. A track reduction unit according to claim 2, wherein a floating oil seal (17) is sealingly arranged between the ring gear (8) and the first carrier (11).
6. A track reduction unit according to claim 1, characterized in that the input end of the drive gear shaft (2) is sealed with a frame oil seal (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023085620.XU CN214036796U (en) | 2020-12-21 | 2020-12-21 | Crawler walking speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023085620.XU CN214036796U (en) | 2020-12-21 | 2020-12-21 | Crawler walking speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214036796U true CN214036796U (en) | 2021-08-24 |
Family
ID=77340317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023085620.XU Active CN214036796U (en) | 2020-12-21 | 2020-12-21 | Crawler walking speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214036796U (en) |
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2020
- 2020-12-21 CN CN202023085620.XU patent/CN214036796U/en active Active
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