CN209743539U - Speed reducing mechanism of hollow rotating platform - Google Patents

Abstract

The utility model discloses a speed reducing mechanism of a hollow rotary platform, which comprises a first gear unit, a second gear unit and a gear box connecting the first gear unit and the second gear unit, wherein the first gear unit comprises a rotary platform, a hollow shaft, a bearing and a big gear, and the second gear unit is provided with a small gear; the gear box is provided with a first matching area matched with the first gear unit and a second matching area matched with the second gear unit, the hollow shaft of the first gear unit is fixedly matched with the first matching area of the gear box, the large gear is fixed with the rotary platform, the hollow shaft is fixedly arranged on the gear box to prevent the hollow shaft from rotating along with the rotary platform, and when the rotary platform rotates, the load stress of the rotary platform is on the hollow shaft, the bearing and the large gear rather than the bearing, so that larger axial load and radial load can be obtained, the precision life of the speed reducer is prolonged, the hollow shaft cannot rotate along with the rotary platform, and wires and pipes are more conveniently arranged.

Description

speed reducing mechanism of hollow rotating platform

Technical Field

The utility model relates to a speed reducer especially indicates a cavity rotary platform's reduction gears.

Background

A speed reducer is a reduction transmission used between a prime mover and a working machine, and functions to match rotational speed and transmit torque between the prime mover and the working machine or an actuator. The speed reducer mainly comprises a speed reducer box body, an input shaft and an output shaft which are respectively matched with the box body through bearings, and a gear speed reducing mechanism arranged between the input shaft and the output shaft, wherein the gear speed reducing mechanism generally comprises a pinion arranged on the input shaft and a bull gear arranged on the output shaft, the bull gear and the pinion are mutually meshed, and the rotating speed ratio between the input shaft and the output shaft is controlled through the gear ratio of the pinion and the bull gear.

The conventional speed reducing mechanism with the rotating platform comprises the rotating platform, a hollow shaft, a bearing, a gear box and a large gear, wherein the hollow shaft is fixed with the rotating platform, the bearing is arranged between the rotating platform and the gear box, and the large gear is arranged in the gear box and is positioned at the bottom end of the rotating platform. When the rotary platform rotates, the hollow shaft rotates along with the rotary platform, stress points of the rotary platform are concentrated on the bearing, the bearing bears large load, and noise and vibration are easily generated and increased in the rotating process, so that the operation precision is reduced, and even the bearing work is influenced. Furthermore, the hollow shaft rotates along with the rotary platform, and the hollow shaft is not suitable for wiring or piping.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art not enough and provide the loading capacity bigger, make things convenient for the speed reducing mechanism of a cavity rotary platform of wiring and pipe more, guarantee the precision life-span of speed reducer.

In order to achieve the above purpose, the solution of the present invention is:

A speed reducing mechanism of a hollow rotary platform comprises a first gear unit, a second gear unit and a gear box for connecting the first gear unit and the second gear unit, wherein the first gear unit comprises the rotary platform, a hollow shaft, a bearing and a large gear, and the second gear unit is provided with a small gear; the gear box has the first cooperation district with first gear unit and with second gear unit complex second cooperation district, is equipped with the spread groove of intercommunication each other between first cooperation district and the second cooperation district, the quill shaft cooperation of first gear unit is fixed in the first cooperation district of gear box, and the gear wheel is fixed with rotary platform, and the gear wheel is corresponding with the spread groove of gear box, and the bearing setting of first gear unit is between gear wheel and rotary platform, the second gear unit cooperation is in the second cooperation district of gear box, and the pinion and the gear wheel meshing of this second gear unit.

Further, the center in the first cooperation district of tooth case is equipped with one through-hole that runs through from top to bottom, and first cooperation district still has opening storage tank up, and the periphery of through-hole is equipped with one by the storage tank toward the bellied protruding rampart of opening direction, and second cooperation district is equipped with the cooperation groove that supplies second gear unit to set up, the gear wheel setting of first gear unit is in the storage tank of tooth case, and the bearing setting of first gear unit is at the protruding rampart top of tooth case.

Furthermore, the first matching area of the gear box is also provided with an annular clamping groove at the bottom of the through hole, and the periphery of the bottom end of the hollow shaft of the first gear unit is provided with a convex ring matched with the clamping groove of the gear box.

Furthermore, the top periphery of the hollow shaft of the first gear unit is provided with an external thread, the external thread is locked with a thread with an internal thread, the bottom surface of the thread extends outwards to form a locking edge, and the locking edge is attached to the top surface of the bearing of the first gear unit.

Further, an oil seal is arranged between the periphery of the bottom of the rotary platform and the containing groove of the gear box.

Further, the second gear unit comprises a pinion, a bearing, a rear cover, a connecting shaft and a motor disc; the back lid cooperation is in the second cooperation district bottom surface of tooth case, and the motor dish sets up in the bottom surface of back lid, and pinion, bearing and connecting axle set up in the cooperation groove of tooth case and back lid and motor dish, and the pinion cooperation is at the top of connecting axle, and locates the cooperation inslot of tooth case to with gear wheel meshing, the bearing cooperation of second gear unit is between the cooperation groove of the inner wall of periphery and back lid of connecting axle and tooth case.

After the scheme of the adoption, the utility model relates to a cavity rotary platform's reduction gears is with the fixed setting of quill shaft on the tooth case, makes the quill shaft can not be along with rotary platform is rotatory, when rotary platform is rotatory, rotary platform's load atress is on quill shaft, bearing and gear wheel and not only on the bearing to can obtain bigger axial load and radial load, prolong the precision life of speed reducer, and the quill shaft can not be along with rotary platform is rotatory, more conveniently arrange wiring and pipe.

Drawings

Fig. 1 is an exploded perspective view of the present invention.

Fig. 2 is a perspective combination view of the present invention.

Fig. 3 is a combined cross-sectional view of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 to 3, the present invention discloses a speed reduction mechanism of a hollow rotary platform, which includes a first gear unit 10, a second gear unit 20 and a gear box 30 connecting the first gear unit 10 and the second gear unit 20, wherein the first gear unit includes a rotary platform 11, a hollow shaft 12, a bearing 13 and a gearwheel 14, and the second gear unit 20 includes a pinion 21, a bearing 22, a rear cover 23, a connecting shaft 24 and a motor disc 25.

Gear box 30 has the first cooperation district 3A with first gear unit 10 and with second gear unit 20 complex second cooperation district 3B, is equipped with the spread groove 31 of mutual intercommunication between first cooperation district 3A and the second cooperation district 3B, setting about first cooperation district 3A and second cooperation district 3B are, and first cooperation district 3A's center is equipped with a through-hole 32 that runs through from top to bottom, and first cooperation district 3A still has opening storage tank 33 up, and the periphery of through-hole 32 is equipped with one by storage tank 33 toward the bellied protruding rampart 34 of opening direction, and this first cooperation district 3A still is equipped with an annular draw-in groove 35 in the bottom of through-hole 32, and second cooperation district 3B is equipped with the cooperation groove 36 that supplies second gear unit 20 to set up.

The hollow shaft 12 is fitted in the through hole 32 of the gear box 30, the bottom end periphery of the hollow shaft 12 is provided with a convex ring 121 in interference fit with a clamping groove 35 of the gear box 30, the gearwheel 14 of the first gear unit 10 is arranged in the accommodating groove 33 of the gear box 30, the bearing 13 of the first gear unit 10 is arranged at the top of a convex wall 34 of the gear box 30, the top end periphery of the hollow shaft 12 is provided with an external thread 122, the external thread 122 is locked with a thread 15 with an internal thread 151, a locking edge 152 extends from the bottom surface of the thread 15, the locking edge 152 is attached to the top surface of the bearing 13, the rotary platform 11 is fitted at the top end of the accommodating groove 33 of the gear box 30, the rotary platform 11 is provided with a central hole 111 for the hollow shaft 12 to pass through, the gearwheel 14 is fixed with the rotary platform 11, and an oil seal 16 is arranged between the bottom periphery of the rotary platform 11 and the accommodating groove 33 of. The second gear unit 20 is fitted in the second fitting region 3B of the gear box 30, the rear cover 23 of the second gear unit 20 is fitted in the bottom surface of the second fitting region 3B of the gear box 30, the motor disk 25 is disposed on the bottom surface of the rear cover, the pinion 21, the bearing 22 and the connecting shaft 24 are disposed in the fitting groove 36 of the gear box 30, the rear cover 23 and the motor disk 25, the pinion 21 is fitted on the top of the connecting shaft 24, is disposed in the fitting groove 36 of the gear box 30 and is engaged with the large gear 14, and the bearing 22 is fitted between the periphery of the connecting shaft 24, the inner wall of the rear cover 23 and the fitting groove 36 of the gear box 30.

In assembling, the gear box 30 and the hollow shaft 12 are combined, the rotary platform 11 is assembled with the large gear 14 and the two bearings 13 of the first gear unit 10, the rear cover 23, the connecting shaft 24, the bearings 22, the small gear 21 and the motor disk 25 are assembled and fixed to form the second gear unit 20, the second gear unit 20 and the rotary platform 11 to which the large gear 14 is fixed are assembled on the gear box 30, and the screw 15 is screwed to the top end of the hollow shaft 12, thereby completing the assembly of the reduction mechanism.

During the use, motor drive pinion 21 rotates and drives gear wheel 14 and rotates, because gear wheel 14 is together fixed with rotary platform 11, can drive rotary platform 11 rotatory when gear wheel 14 rotates, the utility model discloses a quill shaft 12 is fixed on tooth case 30, can not be rotatory along with rotary platform 11, when rotary platform 11 is rotatory, rotary platform 11's load atress is on quill shaft 12, bearing 13 and gear wheel 14 and not only on bearing 13 to can obtain bigger axial load and radial load, prolong the precision life of speed reducer, and quill shaft 12 can not be rotatory along with rotary platform 11, more conveniently arrange wiring and pipe.

The key of the utility model lies in: the hollow shaft 12 is fixedly arranged on the gear box 30 and cannot rotate along with the rotating platform 11, when the rotating platform 11 rotates, the load of the rotating platform is stressed on the hollow shaft 12 and the bearing 13, and larger axial load and longitudinal load can be obtained.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims (6)

1. A hollow rotary platform's reduction gears characterized in that includes: the gear box comprises a first gear unit, a second gear unit and a gear box, wherein the gear box is used for connecting the first gear unit and the second gear unit; the gear box has the first cooperation district with first gear unit and with second gear unit complex second cooperation district, is equipped with the spread groove of intercommunication each other between first cooperation district and the second cooperation district, the quill shaft cooperation of first gear unit is fixed in the first cooperation district of gear box, and the gear wheel is fixed with rotary platform, and the gear wheel is corresponding with the spread groove of gear box, and the bearing setting of first gear unit is between gear wheel and rotary platform, the second gear unit cooperation is in the second cooperation district of gear box, and the pinion and the gear wheel meshing of this second gear unit.

2. A hollow rotary platform speed reduction mechanism as claimed in claim 1, wherein: the center in the first cooperation district of tooth case is equipped with one through-hole that runs through from top to bottom, and first cooperation district still has opening storage tank up, and the periphery of through-hole is equipped with one by the storage tank toward the bellied protruding wall of opening direction, and second cooperation district is equipped with the cooperation groove that supplies second gear unit to set up, the gear wheel setting of first gear unit is in the storage tank of tooth case, and the bearing setting of first gear unit is at the protruding wall top of tooth case.

3. A hollow rotary platform speed reduction mechanism as claimed in claim 2, wherein: the first matching area of the gear box is also provided with an annular clamping groove at the bottom of the through hole, and the periphery of the bottom end of the hollow shaft of the first gear unit is provided with a convex ring matched with the clamping groove of the gear box.

4. A hollow rotary platform speed reduction mechanism as claimed in claim 3, wherein: the top periphery of the hollow shaft of the first gear unit is provided with an external thread, the external thread is locked with a thread with an internal thread, the bottom surface of the thread extends outwards to form a locking edge, and the locking edge is attached to the top surface of the bearing of the first gear unit.

5. A hollow rotary platform speed reduction mechanism as claimed in claim 2, wherein: and an oil seal is arranged between the periphery of the bottom of the rotary platform and the accommodating groove of the gear box.

6. A hollow rotary platform speed reduction mechanism as claimed in claim 2, wherein: the second gear unit comprises a pinion, a bearing, a rear cover, a connecting shaft and a motor disc; the back lid cooperation is in the second cooperation district bottom surface of tooth case, and the motor dish sets up in the bottom surface of back lid, and pinion, bearing and connecting axle set up in the cooperation groove of tooth case and back lid and motor dish, and the pinion cooperation is at the top of connecting axle, and locates the cooperation inslot of tooth case to with gear wheel meshing, the bearing cooperation of second gear unit is between the cooperation groove of the inner wall of periphery and back lid of connecting axle and tooth case.