CN217558911U

CN217558911U - Special planetary reducer of walking drive

Info

Publication number: CN217558911U
Application number: CN202221014494.5U
Authority: CN
Inventors: 张云峰
Original assignee: Jiangsu Kaibo Transmission Device Co ltd
Current assignee: Jiangsu Kaibo Transmission Device Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-10-11
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses a special planetary reducer of walking drive, including motor, gear box, input shaft, one-level planetary gear mechanism, second grade planetary gear mechanism and output sleeve, the output shaft of motor stretches into in the gear box, is perpendicular transmission with the input shaft in the gear box and connects, and the input shaft passes through the shaft coupling and is connected with the transition shaft, is equipped with one-level planetary gear mechanism on the input shaft, is equipped with second grade planetary gear mechanism on the transition shaft, and second grade planetary gear mechanism is connected with the output sleeve, input shaft, transition shaft and output sleeve coaxial arrangement, motor drive input shaft and transition shaft rotate simultaneously, and input shaft and transition shaft drive one-level planetary gear mechanism and second grade planetary gear mechanism syntropy rotation respectively, and second grade planetary gear mechanism drives the output sleeve and rotates, exports power; the utility model discloses planetary reducer is applicable to the big walking drive equipment of load change, has that the transmission velocity ratio is big, bearing capacity is high, advantage that transmission efficiency is high.

Description

Special planetary reducer of walking drive

Technical Field

The utility model belongs to the technical field of the speed reducer, concretely relates to special planetary reducer of walking drive.

Background

The walking speed reducer is an ideal driving device for wheeled or crawler-type driven vehicles and other mobile equipment, and can be applied to many fields, such as excavator track driving, airport vehicle and ship driving, wheel driving of garbage compaction vehicles, road roller walking driving, drilling equipment track driving and the like; in addition, all places related to movement and rotation can be suitable, and the device can also be applied to places with difficult installation environment due to the compact structural form. The cycloidal pin gear speed reducer and the planetary speed reducer are two common traveling speed reducers, but under the condition of larger vehicle load, the central shaft of the cycloidal pin gear speed reducer is easy to break, a pin bush is easy to damage, and the pin bush is troublesome to disassemble and assemble and higher in maintenance cost; the common single-stage planetary reducer only has one set of planetary gear, and cannot meet the use requirements of heavy machinery for high load and large torque.

Disclosure of Invention

To the problem and the technical demand, the utility model provides a special planetary reducer of travel drive has that the transmission velocity ratio is big, bearing capacity is high, advantage that transmission efficiency is high.

The technical scheme of the utility model as follows: the utility model provides a special planetary reducer of walking drive, includes motor, gear box, input shaft, one-level planetary gear mechanism, second grade planetary gear mechanism and output sleeve, the output shaft of motor stretches into in the gear box, is perpendicular transmission with the input shaft in the gear box and connects, and the input shaft passes through the shaft coupling and is connected with the transition shaft, is equipped with one-level planetary gear mechanism on the input shaft, is equipped with second grade planetary gear mechanism on the transition shaft, and second grade planetary gear mechanism and output sleeve are connected, input shaft, transition shaft and the coaxial setting of output sleeve, motor drive input shaft and transition shaft are rotatory simultaneously, and input shaft and transition shaft drive one-level planetary gear mechanism and second grade planetary gear mechanism syntropy respectively, and second grade planetary gear mechanism drives the output sleeve and rotates, output power. Two sets of planetary gear mechanisms which are arranged side by side are arranged in the gear box, so that the transmission ratio can be increased, and the transmission requirement of high load and large torque is met.

Furthermore, the gear box comprises a vertical box body and a horizontal box body which are connected in a right angle mode, a motor is installed at the top of the vertical box body, a group of bevel gear transmission assemblies are arranged in the vertical box body, the bevel gear transmission assemblies are used for enabling the motor and an input shaft to be in transmission connection according to an angle of 90 degrees, the input shaft penetrates into the horizontal box body from the vertical box body, and the primary planetary gear mechanism, the secondary planetary gear mechanism and the output sleeve are all arranged in the horizontal box body. The bevel gear transmission assembly is connected with the planetary gear mechanism in a right angle mode in the gear box, the gear box is more suitable for occasions with large load change of an output end, and the right-angle planetary speed reducing motor can be bent by 90 degrees, is small in size and can save installation space.

Furthermore, be equipped with first sun gear on the input shaft, one-level planetary gear mechanism includes first planet wheel, first planet frame and first ring gear, and first ring gear and first sun gear set up with one heart, and first ring gear sets up on horizontal box inner wall around first sun gear is fixed, and first planet frame fixed connection is on the transition axle, is equipped with the fixed axle on the first planet frame, and first planet wheel passes through the bearing and installs on the fixed axle, and first planet wheel and inboard first sun gear, the first ring gear in the outside are in the normal mesh state. The input shaft drives the first sun gear to rotate forwards, the first gear ring is kept still, the first planet gear rotates backwards, the first planet carrier rotates forwards, the fixed shaft supports the first planet gear to rotate backwards, the first planet carrier and the coupling simultaneously drive the transition shaft to rotate forwards, and power is transmitted to the second-stage planet gear mechanism.

Furthermore, the first planet carrier is simultaneously connected with a plurality of first planet wheels, the first planet wheels are staggered and meshed at equal angles around the first sun wheel, the handle parts of the first planet carrier are fixedly sleeved on the transition shaft, and the outer peripheral surfaces of the handle parts are connected with the inner wall of the gear box through cylindrical roller bearings. The first planet gears are uniformly distributed around the first sun gear, so that the inertia forces of the first planet gears and the rotating arms are balanced, the number of the gears participating in meshing is increased, and the running balance of planetary transmission is realized.

Furthermore, the secondary planetary gear mechanism comprises a second sun gear, a second planet carrier and a second gear ring, the second sun gear is arranged on the transition shaft, the second gear ring and the second sun gear are arranged concentrically, the second gear ring is fixedly arranged on the inner wall of the horizontal box body around the second sun gear, a supporting shaft is arranged on the second planet carrier, the second planet gear is arranged on the supporting shaft through a bearing, and the second planet gear is meshed with the second sun gear and the second gear ring simultaneously. The transition shaft drives the second sun gear to rotate positively, the second gear ring keeps fixed, the second planet gear rotates negatively, and the second planet carrier rotates positively.

Furthermore, a plurality of second planet wheels are simultaneously connected to the second planet carrier, and the second planet wheels are staggered and meshed at equal angles around the second sun wheel.

Furthermore, the output sleeve is connected to the end of the horizontal box body through a cylindrical roller bearing, the port of the output sleeve extends out of the box body, the bottom surface of the output sleeve is fixedly connected with the supporting shaft of the second planet carrier, the output sleeve and the transition shaft are concentric, and the end of the transition shaft is connected to the center of the bottom surface of the output sleeve through a ball bearing. The supporting shaft on the second planet carrier drives the output sleeve to rotate positively, the core part of the output sleeve is connected with the transition shaft through a bearing, and the center of positive rotation of the output sleeve can be ensured to be fixed and rotate stably.

Furthermore, a box body sealing cover is arranged on the outer side of the output sleeve, and a sealing ring is arranged between the box body sealing cover and the output sleeve.

Furthermore, two key grooves are symmetrically formed in the inner wall of the output sleeve. The output sleeve can be connected with the output shaft through two key grooves, power is transmitted to the outside, the port of the output sleeve faces the outside, the output shaft can be more conveniently replaced, and equipment maintenance is facilitated.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is a right-angle planetary reducer, which adopts a group of bevel gear mechanisms and two groups of planetary gear mechanisms for transmission connection, and is very suitable for the occasions with large load variation of the input end and the output end; the speed reducer has the advantages of small volume, light weight and installation space saving, and can be adapted to various servo motors, brushless motors and stepping motors; the transmission efficiency is high, the deceleration range is wide, the two-stage planetary gear mechanism can further reduce the rotating speed, increase the torque and better split the power; under the condition of unbalanced stress, each gear in the planetary gear mechanism can move radially, so that each gear can uniformly share load, and a plurality of planet gears are uniformly distributed and meshed around the sun gear, thereby realizing balanced operation of planetary transmission, enhancing the capability of resisting impact and vibration, and having higher working reliability.

Drawings

FIG. 1 is a connecting structure diagram of a motor and a gear box according to the present invention;

FIG. 2 is a cross-sectional view of the horizontal box of the present invention;

FIG. 3 is a view showing the appearance of the gearbox according to the present invention;

FIG. 4 is a structural view of an end face of the output sleeve of the present invention;

labeled in the figure as: the planetary gear set comprises a motor 1, a gear box 2, a vertical box 21, a horizontal box 22, an input shaft 3, a primary planetary gear mechanism 4, a first sun gear 41, a first planetary gear 42, a first planet carrier 43, a fixed shaft 431, a handle 432, a cylindrical roller bearing 433, a first ring gear 44, a transition shaft 5, a coupling 51, a ball bearing 52, a secondary planetary gear mechanism 6, a second sun gear 61, a second planetary gear 62, a second planet carrier 63, a supporting shaft 631, a second ring gear 64, an output sleeve 7, a cylindrical roller bearing 71, a sealing ring 72, a key groove 73 and a box cover 74.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

The utility model discloses a special planetary reducer of travel drive is shown as fig. 1-4, including motor 1, gear box 2, input shaft 3, one-level planetary gear mechanism 4, second grade planetary gear mechanism 6 and output sleeve 7.

The output shaft of the motor 1 extends into the gear box 2, the gear box 2 is vertically connected with the input shaft in a transmission manner, specifically, the gear box 2 comprises a vertical box body 21 and a horizontal box body 22 which are connected in a right angle manner, the motor 1 is installed at the top of the vertical box body 21, a group of bevel gear transmission assemblies (not shown in the figure) are arranged in the vertical box body 21, the bevel gear transmission assemblies are used for connecting the motor and the input shaft in a transmission manner according to an angle of 90 degrees, and the input shaft 3 penetrates into the horizontal box body 22 from the vertical box body 21. The bevel gear transmission component and the planetary gear mechanism are connected in the gear box 2 in a right angle mode, the gear box is more suitable for occasions with large load change of an output end, and the right-angle planetary reduction motor can be bent by 90 degrees, is small in size and can save installation space.

The input shaft 3 is connected with the transition shaft 5 through the coupler 51, the first-stage planetary gear mechanism 4 is arranged on the input shaft 3, the second-stage planetary gear mechanism 6 is arranged on the transition shaft 5, the second-stage planetary gear mechanism 6 is connected with the output sleeve 7, and the first-stage planetary gear mechanism 4, the second-stage planetary gear mechanism 6 and the output sleeve 7 are all arranged in the horizontal box body 22.

The input shaft 3 is provided with a first sun gear 41, the primary planetary gear mechanism 4 comprises a first planetary gear 42, a first planet carrier 43 and a first gear ring 44, the first gear ring 44 and the first sun gear 41 are concentrically arranged, the first gear ring 44 is fixedly arranged on the inner wall of the horizontal box 22 around the first sun gear 41, the first planet carrier 43 is fixedly connected to the transition shaft 5, the first planet carrier 43 is provided with a fixed shaft 431, the first planetary gear 42 is arranged on the fixed shaft 431 through a bearing, and the first planetary gear 42, the first sun gear 41 on the inner side and the first gear ring 44 on the outer side are in a normally meshed state. Preferably, a plurality of first planetary gears 42 are coupled to first carrier 43 at the same time, the plurality of first planetary gears are engaged with each other in an equiangular staggered manner around first sun gear 42 and first sun gear 41, shank 432 of first carrier 43 is fixedly coupled to transition shaft 5, and the outer peripheral surface of shank 432 is coupled to the inner wall of gear case 2 via cylindrical roller bearing 433.

The secondary planetary gear mechanism 6 comprises a second sun gear 61, a second planet gear 62, a second planet carrier 63 and a second gear ring 64, the second sun gear 61 is arranged on the transition shaft 5, the second gear ring 64 and the second sun gear 61 are concentrically arranged, the second gear ring 64 is fixedly arranged on the inner wall of the horizontal box body 22 around the second sun gear 61, a supporting shaft 631 is arranged on the second planet carrier 63, the second planet gear 62 is arranged on the supporting shaft 631 through a bearing, and the second planet gear 62 is meshed with the second sun gear 61 and the second gear ring 64 simultaneously; the second planet carrier 63 is simultaneously connected with a plurality of second planet wheels 62, and the plurality of second planet wheels 62 are staggered and meshed at equal angles around the second sun wheel 61.

The output sleeve 7 is connected to the end portion of the horizontal box 22 through a cylindrical roller bearing 71, the bottom surface of the output sleeve 7 is closed, two key grooves 73 are symmetrically formed in the inner wall of the output sleeve 7, the port of the output sleeve 7 extends out of the box, the bottom surface of the output sleeve 7 is fixedly connected with a supporting shaft 631 of a second planet carrier, the output sleeve 7 is concentric with the transition shaft 5, and the end portion of the transition shaft 5 is connected to the center of the bottom surface of the output sleeve 7 through a ball bearing 52. A box body sealing cover 74 is arranged on the outer side of the output sleeve, and a sealing ring 72 is arranged between the box body sealing cover 74 and the output sleeve 7.

The input shaft 3, the transition shaft 5 and the output sleeve 7 are coaxially arranged, the motor drives the input shaft 3 and the transition shaft 5 to rotate simultaneously, the input shaft 3 and the transition shaft 5 respectively drive the first-stage planetary gear mechanism 4 and the second-stage planetary gear mechanism 6 to rotate in the same direction, the second-stage planetary gear mechanism 6 drives the output sleeve 7 to rotate, and the output sleeve 7 can be connected with an output shaft through the two key grooves 73 and transmits power to the outside.

The utility model discloses an operation process: the motor 1 drives the input shaft 3 to rotate through the bevel gear transmission assembly, the input shaft 3 drives the first sun gear 41 to rotate forwards, the first gear ring 44 is kept still, the first planet gear 42 rotates backwards around the first sun gear 41, the first planet carrier 43 rotates forwards, the first planet carrier 43 and the coupling 51 drive the transition shaft 5 to rotate forwards at the same time, the transition shaft 5 drives the second sun gear 61 to rotate forwards, the second gear ring 64 is kept fixed, the second planet gear 62 rotates backwards, the second planet carrier 63 rotates forwards, the supporting shaft 631 on the second planet carrier 63 drives the output sleeve 7 to rotate forwards, the core of the output sleeve 7 is rotatably connected with the transition shaft 5 through the ball bearing 52, the output sleeve 7 rotates forwards by taking the ball bearing 52 as the center, the output sleeve 7 drives the output shaft member installed in the sleeve to rotate, and power is output outwards.

The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a special planetary reducer of walking drive which characterized in that: including motor, gear box, input shaft, one-level planetary gear mechanism, second grade planetary gear mechanism and output sleeve, the output shaft of motor stretches into in the gear box, is perpendicular transmission with the input shaft in the gear box and connects, and the input shaft passes through the shaft coupling and is connected with the transition shaft, is equipped with one-level planetary gear mechanism on the input shaft, is equipped with second grade planetary gear mechanism on the transition shaft, and second grade planetary gear mechanism and output sleeve are connected, input shaft, transition shaft and the coaxial setting of output sleeve, the motor drive input shaft and transition shaft rotate simultaneously, and input shaft and transition shaft drive one-level planetary gear mechanism and second grade planetary gear mechanism syntropy respectively, and second grade planetary gear mechanism drives output sleeve and rotates, exports power.

2. The planetary reducer for traveling drive according to claim 1, characterized in that: the gearbox comprises a vertical box body and a horizontal box body which are connected in a right angle mode, a motor is installed on the top of the vertical box body, a group of bevel gear transmission assemblies are arranged in the vertical box body, the bevel gear transmission assemblies are used for driving and connecting the motor and an input shaft according to an angle of 90 degrees, the input shaft penetrates into the horizontal box body from the vertical box body, and a primary planetary gear mechanism, a secondary planetary gear mechanism and an output sleeve are all arranged in the horizontal box body.

3. The planetary reducer for traveling drive according to claim 2, characterized in that: the input shaft is provided with a first sun gear, the first-stage planetary gear mechanism comprises a first planetary gear, a first planet carrier and a first gear ring, the first gear ring and the first sun gear are concentrically arranged, the first gear ring is fixedly arranged on the inner wall of the horizontal box body around the first sun gear, the first planet carrier is fixedly connected onto the transition shaft, the first planet carrier is provided with a fixed shaft, the first planetary gear is arranged on the fixed shaft through a bearing, and the first planetary gear, the first sun gear on the inner side and the first gear ring on the outer side are in a normally meshed state.

4. The planetary reducer for traveling drive according to claim 3, characterized in that: the first planet carrier is simultaneously connected with a plurality of first planet wheels, the first planet wheels are staggered and meshed at equal angles around the first sun wheel, the handle parts of the first planet carrier are fixedly sleeved on the transition shaft, and the outer peripheral surfaces of the handle parts are connected with the inner wall of the gear box through cylindrical roller bearings.

5. The planetary reducer for traveling drive according to claim 2, characterized in that: the secondary planetary gear mechanism comprises a second sun gear, a second planet carrier and a second gear ring, the second sun gear is arranged on the transition shaft, the second gear ring and the second sun gear are concentrically arranged, the second gear ring is fixedly arranged on the inner wall of the horizontal box body around the second sun gear, a supporting shaft is arranged on the second planet carrier, the second planet gear is arranged on the supporting shaft through a bearing, and the second planet gear is meshed with the second sun gear and the second gear ring at the same time.

6. The planetary reducer for traveling drive according to claim 5, wherein: and the second planet carrier is simultaneously connected with a plurality of second planet wheels which are staggered and meshed at equal angles around the second sun wheel.

7. The planetary reducer for traveling drive according to claim 5, wherein: the output sleeve is connected to the end portion of the horizontal box body through a cylindrical roller bearing, the port of the output sleeve extends out of the box body, the bottom surface of the output sleeve is fixedly connected with a supporting shaft of the second planet carrier, the output sleeve and the transition shaft are concentric, and the end portion of the transition shaft is connected to the center of the bottom surface of the output sleeve through a ball bearing.

8. The planetary reducer for traveling drive according to claim 7, wherein: and a box body sealing cover is arranged on the outer side of the output sleeve, and a sealing ring is arranged between the box body sealing cover and the output sleeve.

9. The planetary reducer for traveling drive according to claim 8, wherein: two key grooves are symmetrically arranged on the inner wall of the output sleeve.