CN216774521U

CN216774521U - Novel low noise monitoring robot that cruises's two reducing gear box motor structures of going out

Info

Publication number: CN216774521U
Application number: CN202123273131.1U
Authority: CN
Inventors: 钟文
Original assignee: DONGGUAN SILENT INDUSTRIAL CO LTD
Current assignee: DONGGUAN SILENT INDUSTRIAL CO LTD
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-06-17
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a novel double-output-shaft reduction box motor structure of a low-noise cruise monitoring robot, which comprises a double-output-shaft reduction box motor body, a left box body and a right box body; the input end of the left box body is connected with the input shaft of the motor body of the double-output-shaft reduction gearbox; and the input end of the right box body is connected with the input shaft at the other side of the motor body of the double-output-shaft reduction gearbox. The left box body and the right box body all include output shaft, bearing A, bearing B, apron, planet carrier A, planet carrier B, internal gear, oblique internal gear, three gear shafts A, three gear shafts B, three straight steel tooth planetary gear, three oblique plastic planetary gear, sun gear, motor gear, bottom plate. The utility model has the beneficial effects that: low noise, small occupied space, low cost, long service life and high precision.

Description

Novel low noise monitoring robot that cruises's two reducing gear box motor structures that go out

Technical Field

The utility model relates to the technical field of gear boxes, in particular to a novel motor structure of a double-output-shaft reduction gearbox of a low-noise cruise monitoring robot.

Background

With the development of the industrial modernization process, more and more products are produced by adopting intelligent products to replace manual work, and the cruise robot is an intelligent robot which replaces manual work to carry out cruise monitoring. General robot gear box of patrolling and examining adopts a plurality of single gear case gear motor to control, and its structure is complicated, and is bulky, and occupation space is big, causes the waste of space resource, also makes overall cost too high height can not satisfy the market demand, can only optimize gear box motor structure, and production technology and first section skewed tooth wheel structure's novel low noise phi 36 patrol and examine robot double-output axle gear box structure and just can satisfy the market demand, possess market competition.

The common single-gear box speed reducing motor has the following defects:

1. the middle section and the output section rotate by two stages of steel straight gears, the meshing contact ratio of the gears is about 1.25, the contact ratio is small, the number of meshing teeth is small, the stability is poor during transmission operation, the noise is high, the bearing capacity is poor, the cost and the noise are considered, a straight internal gear is generally made of powder metallurgy materials, a first-stage planetary gear is a die-sinking plastic straight gear, the input rotating speed of a gear box is high, the gear box can be quickly worn by the rough surface of the internal gear when meshed with the internal gear, the service life of the gear box is shortened rapidly, the noise is abnormal, the gear box loses efficacy rapidly, and the requirements of customers cannot be met;

2. the torque transmitted between the cover plate and the inner gear is that a small boss on one side is clamped in a groove of the inner gear to bear the torque of the gear box at the output section, the stress is stressed on one side and is uneven, and then the cover plate is made of die-cast zinc alloy material and has low strength;

3. the existing gear box has the problems of low manufacturing and assembling precision, high noise, high cost, low cost performance, poor consistency, high reject ratio, small load bearing torque, short service life, low production efficiency and the like;

4. the two single gear box speed reducing motors control the robot to move a pair of wheels, the cooperation consistency of the wheels at the left end and the right end of the robot is poor due to the difference of the performances of the speed reducing motors, the driving system of the motors is difficult to control, the structure is complex, and the two single motors are high in cost, large in occupied space and difficult to assemble; in view of the many drawbacks of the prior art, improvements are needed.

SUMMERY OF THE UTILITY MODEL

Based on the structure, the utility model aims to provide the novel motor structure of the double-output-shaft reduction box of the low-noise cruise monitoring robot, which has the advantages of low noise, small occupied space, low cost, long service life and high precision.

The utility model provides a novel double-output-shaft reduction box motor structure of a low-noise cruise monitoring robot, which comprises a double-output-shaft reduction box motor body, a left box body and a right box body; the input end of the left box body is connected with the input shaft of the motor body of the double-output-shaft reduction gearbox; and the input end of the right box body is connected with the input shaft at the other side of the motor body of the double-output-shaft reduction gearbox.

The left box body and the right box body all include output shaft, bearing A, bearing B, apron, planet carrier A, planet carrier B, internal gear, oblique internal gear, three gear shafts A, three gear shafts B, three straight steel tooth planetary gear, three oblique plastic planetary gear, sun gear, motor gear, bottom plate.

The cover plate, the inner gear and the bottom plate are sequentially connected in a penetrating manner through screws; the cover plate, the internal gear and the bottom plate form an assembly inner cavity, and the output shaft penetrates through the cover plate and extends outwards from one side of the cover plate; an input port for the input shaft of the motor body of the double-output-shaft reduction gearbox to be inserted is formed in one side of the bottom plate; a motor gear connected with the input shaft of the motor body of the double-output-shaft reduction gearbox is arranged on the input port in a coaxial manner; two heavy spring pins are circumferentially arranged between the contact surfaces of the bottom plate and the inner gear in an array manner; four heavy spring pins are circumferentially arranged between the contact surfaces of the cover plate and the inner gear in an array manner.

The oblique inner gear is arranged on one side, close to the input port, of the assembly inner cavity; one side, close to the output shaft, of the inclined inner gear is connected with a planet carrier A, and the gear shafts A are circumferentially arrayed on one side, close to the input shaft, of the planet carrier A; each inclined plastic planetary gear is correspondingly sleeved on the outer surface of the gear shaft A and is positioned in the inner cavity of the inclined inner gear; each inclined plastic planetary gear is meshed with the inclined inner gear; the motor gear is arranged in a space surrounded by the three oblique plastic planetary gears and is in meshed connection with the three oblique plastic planetary gears.

One side of the planet carrier A close to the output shaft is fixedly connected with a sun gear; one side of the output shaft close to the planet carrier A is coaxially and fixedly connected with a planet carrier B; three gear shafts B are circumferentially arranged on one side, close to the planet carrier A, of the planet carrier B in an array mode, and straight steel tooth planetary gears are sleeved outside the gear shafts B; the sun gear is correspondingly embedded in a space surrounded by the three straight steel tooth planetary gears and is in meshed connection with the three straight steel tooth planetary gears; and the straight steel tooth planetary gears are all in meshed connection with the internal gear. The output shaft is positioned in the inner cavity of the cover plate and is sequentially sleeved with a bearing A and a bearing B.

Preferably, a plurality of grooves are formed in the base plate in a circumferential array on a side thereof facing the output shaft, and a plurality of bosses corresponding to the grooves are formed in the inner gear in a circumferential array on a side thereof facing the base plate.

Preferably, the three oblique plastic planetary gears are in contact with the bottom plate through a bottom plate gasket.

Preferably, an output shaft gasket a and an output shaft gasket B which are mutually abutted and contacted are sequentially sleeved on one side surface of the output shaft close to the planet carrier B, and the output shaft gasket B is contacted with the bearing a.

Preferably, a circlip for holes is arranged between the bearing A and the bearing B in a clinging manner.

Preferably, the cover plate is correspondingly sleeved with a shaft snap spring at the position of the output shaft outlet.

Preferably, the bearing B is in contact with the shaft through an output shaft gasket C by a clamp spring.

As a preferred scheme, the positioning rabbets and the end faces of the cover plate and the bottom plate are both set to be finish turning faces.

Preferably, the positioning spigot and the end face of the two ends of the internal gear are both set to be finish turning faces.

As a preferred scheme, the right box body penetrates through the bottom plate through the screw to be connected with the motor body of the double-output-shaft reduction gearbox; a bottom plate connecting plate is arranged on one side, close to the motor body of the double-output-shaft reduction gearbox, of the bottom plate of the left box body, and the bottom plate connecting plate and the motor body of the double-output-shaft reduction gearbox are welded and fixed; and the screw of the left box body penetrates through the bottom plate and is connected with the bottom plate connecting plate.

The beneficial effects of the utility model are as follows:

1. the first-stage gear is set as an oblique plastic planetary gear, so that the total contact ratio is large, the number of meshing teeth is large, the stability is good during transmission operation, no-load and load noise is lower at high rotating speed, the structure is compact, the bearing capacity is greatly improved, and the market competitiveness is strong;

2. through the matching of the lug boss and the groove, the symmetry and the concentricity of the oblique inner gear are accurately positioned, the structure is simple, and the assembly precision is high;

3. the torque that 4 heavy spring pins born the weight of the gear box transmission that increases between apron and the internal gear, increase 2 heavy spring pins between bottom plate and the internal gear and born the weight of the torque that the gear box transmitted, the atress is even, and bearing capacity is strong, makes the gear box can bear very big moment of torsion, has improved the reliability of gear box greatly.

Drawings

Fig. 1 is a cross-sectional view of the present invention in an assembled state.

Fig. 2 is an exploded view of the left or right case.

Fig. 3 is a sectional view of the left or right casing.

The reference signs are: the double-output-shaft reduction box motor comprises a double-output-shaft reduction box motor body 10, an output shaft 11, a shaft clamp spring 12, an output shaft gasket C13, a bearing B14, a hole clamp spring 15, a gear shaft B16, a straight steel tooth planetary gear 17, a cover plate 22, a planet carrier A18, a gear shaft A19, an oblique plastic planetary gear 20, a bottom plate gasket 21, a cover plate 22, a bearing A23, an output shaft gasket A25, an output shaft gasket B24, a planet carrier B26, an internal gear 28, an oblique internal gear 29, a sun gear 27, a screw 30, a bottom plate 31, a motor gear 32, a heavy spring pin 33, a bottom plate connecting plate 34, a left box body 35, a right box body 36, a groove 38 and a boss 37.

Detailed Description

For a better understanding of the features and technical solutions of the present invention, together with the specific objects and functions attained by the utility model, reference is made to the following detailed description and accompanying drawings that form a part hereof.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-3, the utility model provides a dual output shaft reduction box motor structure of a novel low-noise cruise monitoring robot, which comprises a dual output shaft reduction box motor body 10, a left box body 35 and a right box body 36; the input end of the left box body 35 is connected with the input shaft of the double-output-shaft reduction gearbox motor body 10; the input end of the right box 36 is connected with the input shaft at the other side of the double-output-shaft reduction gearbox motor body 10. The right box body 36 penetrates through the bottom plate 31 through a screw 30 to be connected with the double-output-shaft reduction gearbox motor body 10; a bottom plate connecting plate 34 is arranged on one side, close to the double-output-shaft reduction gearbox motor body 10, of the bottom plate of the left box body 35, and the bottom plate connecting plate 34 and the double-output-shaft reduction gearbox motor body 10 are fixedly welded; the screw 30 of the left case 35 penetrates the bottom plate 31 and is connected to the bottom plate connecting plate 34. Through the structure, a double-gear-box motor is respectively connected to wheels at the left end and the right end of the robot, a double-gear-box reducing motor is adopted to control the movement of the robot, a reducing motor is adopted to drive the wheels at the left end and the right end, the robot is high in cooperation consistency, small in occupied space and low in cost.

The left box body 35 and the right box body 36 respectively comprise an output shaft 11, a bearing A23, a bearing B14, a cover plate 22, a planet carrier A18, a planet carrier B26, an internal gear 28, a bevel internal gear 29, three gear shafts A19, three gear shafts B16, three straight steel tooth planetary gears 17, three bevel plastic planetary gears 20, a sun gear 27, a motor gear 32 and a bottom plate 31.

The cover plate 22, the internal gear 28 and the bottom plate 31 are sequentially connected in a penetrating way through screws 30; the cover plate 22, the internal gear 28 and the bottom plate 31 form an assembly inner cavity, and the output shaft 11 is arranged on one side of the cover plate 22 and penetrates through the cover plate 22 to extend outwards. An input port for inserting an input shaft of the motor body 10 of the double-output-shaft reduction gearbox is arranged on one side of the bottom plate 31; a motor gear 32 connected with an input shaft of the double-output-shaft reduction box motor body 10 is arranged on the input port in a coaxial manner; two heavy spring pins 33 are circumferentially arranged in an array between the contact surfaces of the bottom plate 31 and the inner gear 28; four heavy spring pins 33 are arranged in a circumferential array between the contact surfaces of the cover plate 22 and the annulus gear 28. The heavy spring pin is arranged to simultaneously bear torque, the stress is uniform, the bearing capacity is strong, the gear box can bear very large torque, and the reliability of the gear box is greatly improved.

A bevel internal gear 29 is arranged on one side of the assembly cavity close to the input port; a planet carrier A18 is connected to one side of the oblique inner gear 29 close to the output shaft 11, and the gear shafts A19 are circumferentially arranged in an array on one side of the planet carrier A18 close to the input shaft; each oblique plastic planetary gear 20 is correspondingly sleeved on the outer surface of the gear shaft A19 and is positioned in the inner cavity of the oblique inner gear 29; each oblique plastic planet gear 20 is meshed with an oblique inner gear 29; the triclinic plastic planet gears 20 contact the bottom plate 31 through the bottom plate spacers 21. The motor gear 32 is arranged in a space surrounded by the triclinic plastic planet gears 20 and is meshed with the triclinic plastic planet gears 20. The first-stage gear is changed from a straight plastic planetary gear into a die-sinking oblique plastic planetary gear 20, the helical gear parameters are designed by using a new design concept, and the thickness of the oblique planetary gear is properly increased, so that the total transmission contact ratio of the helical gear is more than or equal to 3; the optimization of the design parameters of the gear can ensure that the total weight contact ratio of the bevel gear transmission is more than or equal to 3 under the condition that the thickness of the bevel planetary gear is increased less, the total weight contact ratio is large, the number of meshing teeth is large, the stability during transmission operation is good, no-load and load noise are less during high rotating speed, the structure is compact, the bearing capacity is greatly improved, and the market competitiveness is strong.

A sun gear 27 is fixedly connected to one side of the carrier a18, which is close to the output shaft 11; one side of the output shaft 11 close to the planet carrier A18 is coaxially and fixedly connected with a planet carrier B26; three gear shafts B16 are circumferentially arranged on one side, close to the planet carrier A18, of the planet carrier B26 in an array mode, and straight steel tooth planet gears 17 are sleeved outside each gear shaft B16; the sun gear 27 is correspondingly embedded in the space surrounded by the three straight steel tooth planetary gears 17 and is meshed with the three straight steel tooth planetary gears 17; the three straight steel tooth planetary gears 17 are all meshed with the internal gear 28. The output shaft 11 is positioned in the inner cavity of the cover plate and is sleeved with a bearing A23 and a bearing B14 in sequence. Planet carrier a18 and planet carrier B26 are arranged coaxially.

A plurality of grooves 38 are formed in a circumferential array on the side of the base plate 31 closer to the output shaft 11, and a plurality of bosses 37 corresponding to the grooves 38 are formed in a circumferential array on the side of the helical internal gear 29 closer to the base plate 31. Through the cooperation of recess 38 and boss 37, oblique internal gear symmetry and concentricity of accurate location, simple structure, the assembly precision is high, and oblique internal gear and planetary gear all are die sinking plastic gear, and two plastic gear meshing wearability are good, help gear box noise and life-span horizontally improvement.

An output shaft gasket A25 and an output shaft gasket B24 which are mutually abutted and contacted are sequentially sleeved on one side surface of the output shaft 11 close to the planet carrier B26, and the output shaft gasket B24 is contacted with a bearing A23.

A hole snap spring 15 is closely arranged between the bearing A23 and the bearing B14. The cover plate 22 is correspondingly sleeved with a shaft snap spring 12 at the position of the outlet of the output shaft 11. The bearing B14 is in contact with the shaft circlip 12 via the output shaft washer C13.

The positioning rabbets and the end faces of the cover plate 22 and the bottom plate 31 are set as finish turning faces. The positioning rabbets and the end faces at the two ends of the internal gear 28 are set as finish turning faces. Two oil blocking rings in the prior art are eliminated, the oil leakage phenomenon is avoided under the condition of screw locking, the sealing performance of the gear box is better, the assembly procedures are reduced, and the cost is saved.

The operating principle of this embodiment is: the double-output-shaft reduction gearbox motor body 10 outputs power to the left box body 35 and the right box body 36 simultaneously, the double-output-shaft reduction gearbox motor body 10 enables the motor gear 32 to rotate through the input shaft, the motor gear 32 drives the three oblique plastic planetary gears 20 to rotate, the rotation of the three oblique plastic planetary gears 20 enables the planet carrier A18 to rotate, the planet carrier A18 rotates to enable the sun gear 27 to synchronously rotate, the sun gear 27 rotates to drive the three straight steel tooth planetary gears 17 to rotate, and the three straight steel tooth planetary gears 17 rotate to drive the planet carrier B26 to rotate so as to enable the output shaft 11 to rotate.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a novel low noise monitoring robot that cruises's two play axle reducing gear box motor structure which characterized in that: comprises a double-output-shaft reduction gearbox motor body (10), a left box body (35) and a right box body (36); the input end of the left box body (35) is connected with the input shaft of the double-output-shaft reduction gearbox motor body (10); the input end of the right box body (36) is connected with the input shaft at the other side of the double-output-shaft reduction gearbox motor body (10);

the left box body (35) and the right box body (36) respectively comprise an output shaft (11), a bearing A (23), a bearing B (14), a cover plate (22), a planet carrier A (18), a planet carrier B (26), an internal gear (28), an inclined internal gear (29), three gear shafts A (19), three gear shafts B (16), three straight steel tooth planetary gears (17), three inclined plastic planetary gears (20), a sun gear (27), a motor gear (32) and a bottom plate (31);

the cover plate (22), the internal gear (28) and the bottom plate (31) are sequentially connected in a penetrating manner through screws (30); the cover plate (22), the internal gear (28) and the bottom plate (31) form an assembly inner cavity, and the output shaft (11) penetrates through the cover plate (22) and extends outwards from one side of the cover plate (22); an input port for the input shaft of the double-output-shaft reduction gearbox motor body (10) to be inserted is formed in one side of the bottom plate (31); a motor gear (32) connected with the input shaft of the double-output-shaft reduction gearbox motor body (10) is arranged on the input port in a coaxial manner; two heavy spring pins (33) are circumferentially arranged between the contact surfaces of the bottom plate (31) and the inner gear (28) in an array manner; four heavy spring pins (33) are arranged between the contact surfaces of the cover plate (22) and the inner gear (28) in a circumferential array manner;

the oblique inner gear (29) is arranged on one side, close to the input port, of the assembly inner cavity; a planet carrier A (18) is connected to one side, close to the output shaft (11), of the oblique inner gear (29), and the gear shafts A (19) are circumferentially arrayed on one side, close to the input shaft, of the planet carrier A (18); each inclined plastic planetary gear (20) is correspondingly sleeved on the outer surface of the gear shaft A (19) and is positioned in the inner cavity of the inclined inner gear (29); each inclined plastic planetary gear (20) is meshed with the inclined internal gear (29); the motor gear (32) is arranged in a space surrounded by the three oblique plastic planetary gears (20) and is meshed with the three oblique plastic planetary gears (20);

a sun gear (27) is fixedly connected to one side, close to the output shaft (11), of the planet carrier A (18); a planet carrier B (26) is fixedly connected with one side of the output shaft (11) close to the planet carrier A (18) in a coaxial manner; three gear shafts B (16) are circumferentially arranged on one side, close to the planet carrier A (18), of the planet carrier B (26), and straight steel tooth planetary gears (17) are sleeved outside the gear shafts B (16); the sun gear (27) is correspondingly embedded in a space surrounded by the three straight steel tooth planetary gears (17) and is meshed and connected with the three straight steel tooth planetary gears (17); the three straight steel tooth planetary gears (17) are all in meshed connection with the internal gear (28);

the output shaft (11) is positioned in the cover plate inner cavity and is sequentially sleeved with a bearing A (23) and a bearing B (14).

2. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: a plurality of grooves (38) are formed in the circumferential array of the side, close to the output shaft (11), of the bottom plate (31), and a plurality of bosses (37) corresponding to the grooves (38) are formed in the circumferential array of the side, close to the bottom plate (31), of the oblique inner gear (29).

3. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: and the inclined plastic planetary gear (20) is in contact with the bottom plate (31) through a bottom plate gasket (21).

4. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: an output shaft gasket A (25) and an output shaft gasket B (24) which are mutually abutted and contacted are sequentially sleeved on one side surface of the output shaft (11) close to the planet carrier B (26), and the output shaft gasket B (24) is contacted with the bearing A (23).

5. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: a clamp spring (15) for holes is tightly arranged between the bearing A (23) and the bearing B (14).

6. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: the cover plate (22) is positioned at the position of the outlet of the output shaft (11) and is correspondingly sleeved with a shaft clamp spring (12).

7. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 6, wherein: the bearing B (14) is in contact with the shaft snap spring (12) through an output shaft gasket C (13).

8. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: the positioning spigot and the end face of the cover plate (22) and the bottom plate (31) are both set to be finish turning faces.

9. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in claim 1, characterized in that: and positioning rabbets and end faces at two ends of the inner gear (28) are set as finish turning faces.

10. The novel double-output-shaft reduction gearbox motor structure of the low-noise cruise monitoring robot as claimed in any one of claims 1 to 9, characterized in that: the right box body (36) penetrates through the bottom plate (31) through the screw (30) and is connected with the double-output-shaft reduction box motor body (10); a bottom plate connecting plate (34) is arranged on one side, close to the motor body (10) of the double-output-shaft reduction gearbox, of the bottom plate of the left box body (35), and the bottom plate connecting plate (34) is welded and fixed with the motor body (10) of the double-output-shaft reduction gearbox; and a screw (30) of the left box body (35) penetrates through the bottom plate (31) and is connected with the bottom plate connecting plate (34).