CN221170599U

CN221170599U - Planetary reduction gear

Info

Publication number: CN221170599U
Application number: CN202323229375.9U
Authority: CN
Inventors: 康凤明; 康真晖; 赵广辰
Original assignee: SHANDONG HONGKANG MACHINERY MANUFACTURING CO LTD
Current assignee: SHANDONG HONGKANG MACHINERY MANUFACTURING CO LTD
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-06-18
Anticipated expiration: 2033-11-29

Abstract

The planetary speed reducer comprises a main body, wherein the main body comprises a first cylindrical shell and a second cylindrical shell which are sequentially connected, and a primary speed reducer and a secondary speed reducer are respectively arranged in the main body; the two groups of speed reducing devices comprise main shafts, sun gears are arranged on the main shafts, planetary units are connected through the sun gears in a transmission way, and inner gear rings matched with the planetary units are arranged on the inner walls of the two column casings; the planetary unit comprises a planetary carrier and a plurality of planetary gears arranged on the planetary carrier, and the planetary carrier of the primary speed reducer is in transmission connection with a main shaft of the secondary speed reducer; the outer end of the main shaft of the primary speed reducer stretches out of the first column casing and can be connected with input power, the planet carrier of the secondary speed reducer is far away from the middle part of one side of the primary speed reducer, protrudes outwards and stretches out of the second column casing, and can finish power output work, the two speed reducers are matched, the speed reduction ratio of the speed reducer is improved, and even if the input power rotating speed is faster, the speed reducer still can finish speed reduction output work well.

Description

Planetary reduction gear

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a planetary speed reducer.

Background

The common speed reducer generally comprises a planetary speed reducer and a cycloid speed reducer, and in the case of the planetary speed reducer, the planetary speed reducer is a mechanism for reducing the revolution number of a motor to the required revolution number and obtaining larger torque, the working principle is that a sun gear is driven to rotate through a main shaft, and then a planet carrier is driven to rotate in a speed reducing way under the cooperation of an outer gear, but in order to ensure that the speed reducer can work normally, the transmission ratio of the speed reducer can only be 2-5, and therefore, when the rotating speed of an input end is higher, the speed reducer cannot finish normal speed reduction transmission work.

Disclosure of utility model

In order to solve the technical problems in the prior art, the utility model provides a planetary reduction device.

The technical scheme of the utility model is as follows:

A planetary reduction device comprises a main body and a planetary reduction mechanism inside the main body, wherein the planetary reduction mechanism can be used for completing the speed reduction and output work of input power.

As a core technical concept of the utility model, the main body comprises a plurality of cylinders which are connected in sequence, a group of speed reducing devices are arranged in each cylinder, specifically, the main body at least comprises a first cylinder and a second cylinder which are connected in sequence, the planetary speed reducing mechanism comprises a first speed reducing device and a second speed reducing device which are respectively positioned in the first cylinder and the second cylinder, the two groups of speed reducing devices comprise main shafts and sun gears arranged on the main shafts, the two main shafts are connected with planetary units through the sun gears in a transmission way, and inner gear rings matched with the planetary units are arranged on the inner walls of the two cylinders; the planetary unit comprises a planetary carrier and a plurality of planetary gears which are arranged on the planetary carrier in a circumferential array, and the planetary carrier of the primary speed reduction device is in transmission connection with a main shaft of the secondary speed reduction device; the main shaft outer end of one-level decelerator stretches out to outside the first section of thick bamboo, and can be connected with input power transmission, the planet carrier of two-level decelerator, its middle part of keeping away from one-level decelerator one side outwards is protruding and stretches out outside the second cylinder, and can accomplish the output work of power, through one-level decelerator and two-level decelerator, accomplish the two-level deceleration output of power, improved decelerator's reduction ratio, even when input power rotational speed is very fast, decelerator still can accomplish the deceleration output work of input power betterly.

The main body comprises a first column casing and a second column casing which are sequentially connected, and a main shaft and a planet carrier of the first-stage speed reduction device are respectively a first main shaft and a first planet carrier; the main shaft and the planet carrier of the secondary speed reducer are a second main shaft and a second planet carrier respectively, and the first main shaft and the second main shaft are coaxially arranged so as to ensure the coaxial input and output of the speed reducer.

On the basis of the structure, the first column casing comprises a first column casing body and a first end cover arranged at one end of the first column casing body far away from the second column casing body, and a first through hole is formed in the middle of the first end cover; the first main shaft is rotationally arranged in the first through hole through the fourth bearing, and even if the rotating speed of the input power is high, the first main shaft can still ensure smooth rotation around the axis, and the receiving work of the input power is completed.

Further, the second cylinder comprises a second cylinder body and a second end cover arranged at one end of the second cylinder body far away from the first cylinder body, and a second port is arranged in the middle of the second end cover; the protruding part of the second planet carrier is rotationally arranged in the second port through the sixth bearing, so that the second planet carrier can smoothly rotate around the central axis of the second planet carrier, and power output work is completed.

As a preferred embodiment, the first column casing further comprises a first sealing cover arranged outside the first through hole; the second cylinder is still including locating the second sealed lid in the second port outside, through two sealed covers, can make the main part be sealed form, and then can be at the inside lubricating oil of filling of theme, guarantee that decelerator can smooth operation.

According to the planetary reduction gear, the first planet carrier is close to one side of the secondary reduction gear and protrudes towards the secondary reduction gear, and the second main shaft is inserted into the protruding portion of the first planet carrier, so that when one-stage reduction gear or the secondary reduction gear fails, the disassembly work of the failure reduction gear can be more conveniently completed.

In order to further ensure that the overhauling work of the speed reducing device can be more conveniently carried out, the first column casing and the second column casing are detachably connected.

In order to ensure that the first planet carrier can smoothly rotate coaxially with the first main shaft, power is stably transmitted to the two-stage speed reducer, and the inner end of the first main shaft is rotationally connected with the first planet carrier through a bearing.

According to the planetary speed reducer, when the input power is large, the primary speed reducer can still successfully finish the receiving work of the input power, the overload damage of the primary speed reducer is prevented, meanwhile, the speed reduction output effect of the secondary speed reducer is ensured for increasing the transmission ratio of the speed reducer, and the transmission ratio of the primary speed reducer is smaller than that of the secondary speed reducer.

Preferably, the range of the transmission ratio of the primary speed reducer is 2.7-3.2, and the range of the transmission ratio of the secondary speed reducer is 3.8-4.6, so that the speed reducer can smoothly finish the speed reduction output work of high-speed input power, and the service life of the speed reducer is ensured, and the speed reducer can operate permanently under the high-speed input power.

The utility model has the beneficial effects that: the utility model relates to a planetary speed reducer, wherein a main shaft of a primary speed reducer can be in transmission connection with input power, and is used for receiving the input power, and transmitting the input power to a main shaft of a secondary speed reducer through a planet carrier of the primary speed reducer, and finally completing power output work through the planet carrier of the secondary speed reducer.

Drawings

The aspects and advantages of the present utility model will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.

In the drawings:

FIG. 1 is a schematic view showing an internal structure of a reduction gear unit according to an embodiment;

the components represented by the reference numerals in the figures are:

1. A first column casing; 11. a first cylinder; 12. a first end cap; 13. a first sealing cover; 2. a second cylinder; 21. a second cylinder; 22. a second end cap; 23. a second sealing cover; 3. a connecting disc; 4. a first-stage reduction gear; 41. a first spindle; 42. a first sun gear; 43. a first planet carrier; 44. a first planet; 5. a secondary speed reduction device; 51. a second spindle; 52. a second sun gear; 53. a second carrier; 54. and a second planet wheel.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

Examples

The present embodiment provides a planetary reduction device, referring to fig. 1, including a main body and a planetary reduction mechanism therein, through which a speed reduction output work of an input power can be completed, and a detailed description will be given below of a structural development of the reduction device.

In this embodiment, as a core technical concept of the present utility model, the main body includes a plurality of cylinders connected in sequence, a group of speed reducing devices are disposed in each cylinder, specifically, the main body includes at least a first cylinder 1 and a second cylinder 2 connected in sequence and coaxially disposed, in this embodiment, the main body includes only the first cylinder 1 and the second cylinder 2 connected in sequence and coaxially disposed, and the planetary speed reducing mechanism includes a first speed reducing device 4 and a second speed reducing device 5 respectively disposed in the first cylinder 1 and the second cylinder 2, and the first speed reducing device 4 and the second speed reducing device 5 are in transmission connection, and can complete the input power receiving work through the first speed reducing device 4, and complete the power output work through the second speed reducing device 5.

The transmission mode of the planetary gear is that the two groups of speed reducers comprise main shafts, the main shafts of the two groups of speed reducers are coaxially arranged so as to ensure the coaxial input and output of the speed reducers, the two main shafts are provided with sun gears, the two main shafts are connected with planetary units through the sun gears in a transmission way, and the inner walls of the two column casings are provided with inner gear rings matched with the planetary units; the planetary unit comprises a planetary carrier and a plurality of planetary gears which are arranged on the planetary carrier in a circumferential array, and the planetary carrier of the primary speed reduction device 4 is in transmission connection with a main shaft of the secondary speed reduction device 5; the main shaft outer end of one-level decelerator 4 stretches out to outside the first barrel 1, and can be connected with input power transmission, the planet carrier of second grade decelerator 5, its middle part of keeping away from one-level decelerator 4 one side outwards is protruding and stretches out outside second barrel 2, and can accomplish the output work of power, through one-level decelerator 4 and second grade decelerator 5, accomplish the second grade deceleration output of power, improved decelerator's reduction ratio, even when input power rotational speed is very fast, decelerator still can accomplish the deceleration output work of input power betterly.

In the specific structure of the primary reduction gear 4, the main shaft, the sun gear, the planet carrier, and the planet gears of the primary reduction gear 4 are a first main shaft 41, a first sun gear 42, a first planet carrier 43, and a first planet gear 44, respectively.

Wherein the first planet carrier 43 comprises a first annular rack plate and a second annular rack plate, the first rack plate and the second rack plate are coaxially arranged at intervals, and the outer ring of the first rack plate protrudes towards the first rack plate and is connected with the outer ring of the first rack plate through bolts; the first planetary gears 44 are rotatably arranged on the first rotating shaft, the convex parts of the outer ring of the first frame plate are provided with notches corresponding to the positions of the first planetary gears 44, and one side of each first planetary gear 44 extends out of the notch; the first column casing 1 comprises a first column casing 11 in a cylindrical shape, a first annular gear is arranged in the first column casing, one side, extending out of the notch, of the first planet gears 44 is meshed with the first annular gear, the inner end of the first main shaft 41 is located between the first frame plate and the second frame plate, the outer ring of the first sun gear 42 is meshed with the first planet gears 44, the first planet gears 44 can be driven to rotate through the first main shaft 41, and the first planet frames 43 are driven to rotate at a reduced speed through the first rotating shaft under the action of the first annular gear.

As a preferred embodiment, the first cylinder 1 further includes a first end cover 12 disposed at one end of the first cylinder 11 away from the second cylinder 2, and a first through hole is disposed in the middle of the first end cover 12; the outer end of the first main shaft 41 passes through the first through hole, and is rotationally arranged in the first through hole through the fourth bearing, so that even if the rotation speed of the input power is high, the first main shaft 41 can still ensure smooth rotation around the axis, and the input power receiving work is completed.

As a further preferred aspect, to ensure that the first planet carrier 43 can smoothly rotate coaxially with the first main shaft 41, and further stably transmit power to the secondary reduction gear 5, the inner end of the first main shaft 41 is rotatably connected with the second carrier body and the first carrier body of the first planet carrier 43 through the first bearing and the second bearing, respectively, and simultaneously, to ensure that the rotation of the first planet wheel 44 can be more smoothly, the first planet carrier is rotatably disposed on the first rotating shaft through the third bearing.

In the structure of the secondary reduction gear 5, specifically, the main shaft, the sun gear, the planet carrier, and the planet gears of the secondary reduction gear 5 are a second main shaft 51, a second sun gear 52, a second planet carrier 53, and a second planet gear 54, respectively.

Wherein the second planet carrier 53 comprises a third annular rack plate and a fourth rack plate, the third rack plate and the fourth rack plate are coaxially arranged in a clearance way, and the outer ring of the third rack plate protrudes towards the fourth rack plate and is connected with the outer ring of the fourth rack plate through bolts; the third rack plate and the fourth rack plate are circumferentially arrayed with three second rotating shafts, the second planetary gears 54 are rotatably arranged on the second rotating shafts, gaps are arranged at positions, corresponding to the second planetary gears 54, of the protruding portions of the outer rings of the third rack plate, and one sides of the second planetary gears 54 extend out of the gaps; the second cylinder 2 comprises a cylindrical second cylinder 21, a second annular gear is arranged in the second cylinder, one side, extending out of the notch, of the second planet wheel 54 is meshed with the second annular gear, the inner end of the second main shaft 51 is located between the third frame plate and the fourth frame plate, the outer ring of the second sun wheel 52 is meshed with the second planet wheel 54, the outer end of the second main shaft 51 is in transmission connection with the first planet carrier 43, the second main shaft 51 can be driven to rotate through the first planet carrier 43, the second planet wheel 54 is driven to rotate, and the second planet carrier 53 is driven to rotate in a descending mode through a second rotating shaft under the action of the second annular gear.

As a preferred embodiment, the second cylinder 2 further includes a second end cover 22 disposed at one end of the second cylinder 21 far away from the first cylinder 1, and a second port is disposed in the middle of the second end cover 22; the middle part of one side of the third frame plate far away from the fourth frame plate is outwards protruded, the protruded part penetrates through the second port and stretches out of the second cylinder 2, and the second frame plate is rotatably arranged in the second port through the sixth bearing, so that the second planet carrier 53 can smoothly rotate around the axis, and power output work is completed.

As a further preferable aspect, in order to ensure that the second planet carrier 53 can smoothly rotate coaxially with the first planet carrier 43, and thus stably complete the power output operation, the middle portion of one side of the first carrier plate away from the second carrier plate protrudes outwards, and is rotatably provided in the middle portion of the third carrier plate through the eighth bearing, and in order to ensure that the rotation of the second planet wheel 54 can be more smoothly performed, it is rotatably provided on the second rotating shaft through the fifth bearing.

In this embodiment, as a preferred embodiment, the first cylinder 1 further includes a first sealing cover 13 disposed outside the first opening; the second cylinder 2 further comprises a second sealing cover 23 arranged outside the second port, and the main body can be sealed through the two sealing covers, so that lubricating oil can be filled in the main body, and smooth operation of the speed reducer is ensured.

As a further preferred aspect, the first planet carrier 43 is close to one side of the second reduction gear 5 and protrudes towards the second reduction gear 5, and the second main shaft 51 is inserted into the protruding portion of the first planet carrier 43, that is, the middle portion of the protruding portion of the first carrier away from one side of the second carrier is provided with a socket, and the outer end of the second main shaft 51 is inserted into the socket, so that when the first reduction gear 4 or the second reduction gear 5 fails, the repair work of the failure reduction gear can be more conveniently completed, meanwhile, the space requirement of the first planet carrier 43 and the second planet carrier 53 is shortened, the overall length of the reduction gear is obviously shortened, and the reduction gear can be more easily installed.

For further guaranteeing that reducing gear's overhauls work can be more convenient go on, first barrel 1 and second barrel 2 can dismantle the connection, specifically speaking, be equipped with annular connection pad 3 between first barrel 11 and the second barrel 21, just first barrel 11 diameter is less than second barrel 21 diameter, the one end that first end cover 12 was kept away from to first barrel 11 is close to the position bolted connection of inner circle with connection pad 3, the one end that second end cover 22 was kept away from to second barrel 21 is close to the position bolted connection of outer lane with connection pad 3.

In order to further ensure that the second planet carrier 53 can still smoothly rotate coaxially with the second main shaft 51 when the output power rotation speed of the first planet carrier 43 is higher, and further smoothly complete the power output work, the middle part of the fourth carrier far away from one side of the third carrier is outwards protruded, and the protruded part is rotationally arranged at the connecting middle part through a seventh bearing.

In this embodiment, in order to make the input power larger, the primary reduction device 4 still can smoothly complete the receiving work of the input power, prevent the primary reduction device 4 from being damaged due to overload, and meanwhile, in order to increase the transmission ratio of the reduction device, ensure the speed-down output effect of the secondary reduction device 5, the transmission ratio of the primary reduction device 4 is smaller than the transmission ratio of the secondary reduction device 5.

Preferably, the range of the transmission ratio of the primary speed reducer 4 is 2.7-3.2, the range of the transmission ratio of the secondary speed reducer 5 is 3.8-4.6, the speed reduction output work of the high-speed input power can be smoothly completed by the speed reducer, the service life of the speed reducer is ensured, and the speed reducer can operate permanently under the high-speed input power.

Claims

1. The planetary reduction device is characterized by comprising a main body and a planetary reduction mechanism in the main body;

the main body comprises a plurality of column barrels which are connected in sequence, and a group of speed reducing devices are arranged in each column barrel;

The main body at least comprises a first column casing (1) and a second column casing (2) which are connected in sequence, a first-stage speed reducer (4) and a second-stage speed reducer (5) are respectively arranged in the main body,

The two speed reducing devices comprise main shafts and sun gears arranged on the main shafts, the two main shafts are connected with planetary units through the sun gears in a transmission way, and inner gear rings matched with the planetary units are arranged on the inner walls of the two column casings;

The planetary unit comprises a planetary carrier and a plurality of planetary gears which are arranged on the planetary carrier in a circumferential array, and the planetary carrier of the primary speed reduction device (4) is in transmission connection with a main shaft of the secondary speed reduction device (5);

The outer end of the main shaft of the primary speed reducer (4) extends out of the first column casing (1), and the planet carrier of the secondary speed reducer (5) is far away from the middle part of one side of the primary speed reducer (4), protrudes outwards and extends out of the second column casing (2).

2. A planetary reduction device according to claim 1, characterized in that the body comprises a first cylinder (1) and a second cylinder (2) connected in sequence;

The main shaft and the planet carrier of the primary speed reduction device (4) are a first main shaft (41) and a first planet carrier (43) respectively;

The main shaft and the planet carrier of the secondary speed reduction device (5) are respectively a second main shaft (51) and a second planet carrier (53);

The first main shaft (41) and the second main shaft (51) are coaxially arranged.

3. A planetary reduction gear according to claim 2, wherein the first cylinder (1) comprises a first cylinder body (11) and a first end cover (12) arranged at one end of the first cylinder body far away from the second cylinder (2), and a first through hole is arranged in the middle of the first end cover (12);

the first main shaft (41) is rotatably arranged in the first through hole through a fourth bearing.

4. A planetary reduction gear according to claim 3, wherein the second cylinder (2) comprises a second cylinder body (21) and a second end cover (22) arranged at one end of the second cylinder body far away from the first cylinder body (1), and a second port is arranged in the middle of the second end cover (22);

The convex part of the second planet carrier (53) is rotatably arranged in the second port through a sixth bearing.

5. A planetary reduction device according to claim 4, characterized in that the first cylinder (1) further comprises a first sealing cap (13) arranged outside the first opening;

the second cylinder (2) further comprises a second sealing cover (23) arranged outside the second port.

6. A planetary reduction device according to claim 2, characterized in that the first carrier (43) is provided on a side close to the secondary reduction device (5) so as to project toward the secondary reduction device (5), and the second main shaft (51) is inserted into the projecting portion of the first carrier (43).

7. A planetary reduction device according to claim 2, characterized in that the first (1) and second (2) cylinders are detachably connected.

8. A planetary reduction device according to claim 7, characterized in that the inner end of the first main shaft (41) is rotatably connected to the first planet carrier (43) by means of bearings.

9. A planetary reduction gear according to any of claims 2-8, characterized in that the transmission ratio of the primary reduction gear (4) is smaller than the transmission ratio of the secondary reduction gear (5).

10. A planetary reduction gear according to claim 9, characterized in that the ratio of the primary reduction gear (4) is in the range of 2.7-3.2 and the ratio of the secondary reduction gear (5) is in the range of 3.8-4.6.