CN216805109U

CN216805109U - Trolley driving device

Info

Publication number: CN216805109U
Application number: CN202220709192.3U
Authority: CN
Inventors: 李湘莲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-06-24
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a trolley driving device, belonging to the technical field of driving devices, comprising a trolley frame, a driving wheel and a driving motor, wherein the driving wheel is arranged at the bottom of the trolley frame through a foot rest, the driving motor is arranged on the trolley frame through a vertical frame, a transmission shaft is rotatably arranged on the foot rest, the transmission shaft is respectively connected with a primary transmission gear and a secondary conical gear through keys, the driving wheel is connected with a secondary transmission gear through keys, the primary transmission gear and the secondary transmission gear are mutually meshed, an output shaft of the driving motor is connected with the primary conical gear through keys, the primary conical gear and the secondary conical gear are mutually meshed, the conical gear and the transmission gear are adopted to replace the traditional chain transmission and belt transmission, the transmission connection between the driving motor and the driving wheel is realized, the transmission distance between the driving motor and the driving wheel is shortened, thereby the volume of the device is reduced, and due to the adoption of meshing transmission, when the driving motor stops rotating, the friction between the gears is self-locked, so that the braking of the driving wheel can be realized, and the braking response speed is improved.

Description

Trolley driving device

Technical Field

The utility model relates to the technical field of driving devices, in particular to a trolley driving device.

Background

With the increasing popularity of self-propelled equipment, the demand for self-propelled driving devices is increasing. At present, a transmission structure of the self-walking device mostly adopts a transmission chain or a transmission belt, the existing self-walking driving device is limited by the traditional transmission mode, the whole volume is large, the braking effect in the advancing process is poor, and the positioning with higher precision cannot be realized.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a trolley driving device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a trolley driving device comprises a trolley frame, a driving wheel and a driving motor, wherein the driving wheel is arranged at the bottom of the trolley frame through a foot stand, and the driving motor is arranged on the trolley frame through a vertical stand;

the foot rest is rotatably provided with a transmission shaft, the transmission shaft is respectively connected with a primary transmission gear and a secondary bevel gear in a key mode, the driving wheel key is connected with a secondary transmission gear, the primary transmission gear is meshed with the secondary transmission gear, an output shaft of the driving motor is connected with the primary bevel gear in a key mode, and the primary bevel gear is meshed with the secondary bevel gear.

Preferably, the trolley driving device further comprises a steering motor arranged on the trolley frame, the foot rest is rotatably arranged on the trolley frame, a steering gear is arranged on the foot rest, the steering motor is in transmission connection with the steering gear, and the steering gear is coaxial with an output shaft of the driving motor.

Preferably, the foot rest is rotatably mounted to the frame via a thrust bearing.

Preferably, the trolley driving device further comprises a rotation angle sensor arranged on the trolley frame, and a sensing shaft of the rotation angle sensor is in transmission connection with an output shaft of the steering motor through a gear set.

Preferably, the driving wheel is located below the propeller shaft, and the primary transmission gear and the secondary bevel gear are located on both sides of the driving wheel, respectively.

Preferably, the vertical frame comprises a support plate and a plurality of groups of columns for supporting the support plate, the support plate is arranged on the frame through the support of the columns, the upper ends of the columns form threaded sections, and the support plate is locked on the columns through matching with locking nuts.

Preferably, a shield is covered below the vertical frame, and the shield is covered on the transmission shaft, the primary transmission gear, the primary bevel gear and the secondary bevel gear.

The utility model has the beneficial effects that: compared with the prior art, the conical gear and the transmission gear are adopted to replace the traditional chain transmission and belt transmission, so that the transmission connection between the driving motor and the driving wheel is realized, and the transmission distance between the driving motor and the driving wheel is shortened, so that the whole volume of the device is reduced, and the miniaturization of the device is realized; in addition, due to the adoption of meshing transmission, when the driving motor stops rotating, the braking of the driving wheel can be realized through friction self-locking between the gears, the braking response speed of the driving wheel is improved, and the positioning precision of the trolley driving device is improved.

Drawings

FIG. 1 is a first perspective view of an embodiment of the present invention;

FIG. 2 is a front view of an embodiment of the present invention;

FIG. 3 is a perspective view of the second embodiment of the present invention (with the shield omitted);

fig. 4 is a schematic diagram of the transmission connection between the driving wheel and the driving motor in the embodiment of the utility model.

In the figure, 10, the frame; 20. a drive wheel; 21. a secondary drive gear; 30. a foot rest; 31. a drive shaft; 32. a primary drive gear; 33. a secondary bevel gear; 34. a steering gear; 35. a thrust bearing; 40. a drive motor; 41. a primary bevel gear; 51. a support plate; 52. a column; 53. locking the nut; 54. a shield; 60. a steering motor; 61. a rotation angle sensor.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, the trolley driving device provided by the present invention comprises a frame 10, a driving wheel 20 and a driving motor 40, wherein the driving wheel 20 is disposed at the bottom of the frame 10 through a foot rest 30, wherein the foot rest 30 is provided with a driving rotating shaft, the driving wheel 20 is rotatably disposed on the driving rotating shaft, and the driving motor 40 is disposed on the frame 10 through a vertical frame;

the foot rest 30 is rotatably provided with a transmission shaft 31, the transmission shaft 31 is respectively connected with a primary transmission gear 32 and a secondary bevel gear 33 through keys, the driving wheel 20 is connected with a secondary transmission gear 21 through keys, the primary transmission gear 32 is meshed with the secondary transmission gear 21, an output shaft of the driving motor 40 is connected with a primary bevel gear 41 through a key, the primary bevel gear 41 is meshed with the secondary bevel gear 33, and when the driving motor 40 works, the driving wheel 20 is driven to rotate through the primary bevel gear 41, the secondary bevel gear 33, the primary transmission gear 32 and the secondary transmission gear 21 in sequence.

Compared with the prior art, the conical gear and the transmission gear are adopted to replace the traditional chain transmission and belt transmission, so that the transmission connection between the driving motor 40 and the driving wheel 20 is realized, and the transmission distance between the driving motor 40 and the driving wheel 20 is shortened, so that the overall size of the device is reduced, and the miniaturization of the device is realized; in addition, due to the adoption of meshing transmission, when the driving motor 40 stops rotating, the braking of the driving wheel 20 can be realized through friction self-locking between the gears, the braking response speed of the driving wheel 20 is improved, and the positioning precision of the trolley driving device is improved.

Further, in order to realize the steering of the trolley driving device, the trolley driving device further comprises a steering motor 60 arranged on the frame 10, the foot rest 30 is rotatably arranged on the frame 10, the foot rest 30 is provided with a steering gear 34, the steering motor 60 is in transmission connection with the steering gear 34, the steering gear 34 is coaxial with an output shaft of the driving motor 40, and the foot rest 30 is driven to rotate by the steering motor 60, so that the steering of the driving wheel 20 is realized.

Further, in order to prevent the excessive friction between the foot rest 30 and the frame 10 from affecting the steering of the driving wheel 20, the foot rest 30 is rotatably mounted on the frame 10 by the support of the thrust bearing 35, and the friction between the foot rest 30 and the frame 10 is reduced by the thrust bearing 35, so that the driving wheel 20 can be smoothly steered.

Further, the trolley driving device further comprises a rotation angle sensor 61 arranged on the trolley frame 10, and a sensing shaft of the rotation angle sensor 61 is in transmission connection with an output shaft of the steering motor 60 through a gear set.

Further, in order to further reduce the overall size of the apparatus, the driving wheel 20 is located below the transmission shaft 31, and the primary transmission gear 32 and the secondary bevel gear 33 are located on both sides of the driving wheel 20, respectively.

Further, the stand comprises a support plate 51 and a plurality of sets of columns 52 for supporting the support plate 51, the support plate 51 is arranged on the frame 10 through the support of the columns 52, a threaded section is formed at the upper end of the column 52, and the support plate 51 is locked on the column 52 through matching with a locking nut 53, wherein the height of the support plate 51, namely the height of the driving motor 40, can be adjusted through sleeving a gasket on the threaded section, so that the matching gap between the primary bevel gear 41 and the secondary bevel gear 33 is adjusted; a shield 54 is covered under the stand, and the shield 54 is covered on the transmission shaft 31, the primary transmission gear 32, the primary bevel gear 41 and the secondary bevel gear 33.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the utility model, and these embodiments are still within the scope of the utility model.

Claims

1. The trolley driving device is characterized by comprising a trolley frame (10), a driving wheel (20) and a driving motor (40), wherein the driving wheel (20) is arranged at the bottom of the trolley frame (10) through a foot rest (30), and the driving motor (40) is arranged on the trolley frame (10) through a vertical frame;

the foot rest (30) is rotatably provided with a transmission shaft (31), the transmission shaft (31) is respectively connected with a primary transmission gear (32) and a secondary bevel gear (33) in a key mode, a driving wheel (20) is connected with a secondary transmission gear (21) in a key mode, the primary transmission gear (32) is meshed with the secondary transmission gear (21) in a mutual meshing mode, an output shaft of a driving motor (40) is connected with a primary bevel gear (41) in a key mode, and the primary bevel gear (41) is meshed with the secondary bevel gear (33) in a mutual meshing mode.

2. The trolley driving device as claimed in claim 1, further comprising a steering motor (60) disposed on the trolley frame (10), wherein the foot rest (30) is rotatably disposed on the trolley frame (10), a steering gear (34) is disposed on the foot rest (30), the steering motor (60) is in transmission connection with the steering gear (34), and the steering gear (34) is coaxial with the output shaft of the driving motor (40).

3. The trolley drive as claimed in claim 2, characterized in that the foot rest (30) is rotatably arranged on the frame (10) by means of a thrust bearing (35).

4. The trolley driving device as claimed in claim 2, further comprising a rotation angle sensor (61) arranged on the trolley frame (10), wherein a sensing shaft of the rotation angle sensor (61) is in transmission connection with an output shaft of the steering motor (60) through a gear set.

5. The trolley drive as claimed in claim 1, characterized in that the drive wheel (20) is located below the transmission shaft (31) and the primary transmission gear (32) and the secondary bevel gear (33) are located on either side of the drive wheel (20).

6. A trolley drive as claimed in claim 1, characterized in that the stand comprises a support plate (51) and a number of sets of uprights (52) for supporting the support plate (51), the support plate (51) being arranged on the trolley frame (10) by means of the uprights (52), the uprights (52) being threaded at their upper ends and the support plate (51) being locked to the uprights (52) by means of co-operation with locking nuts (53).

7. A trolley drive as claimed in claim 1, characterized in that under the stand there is a shield (54), which shield (54) covers the drive shaft (31), the primary drive gear (32), the primary bevel gear (41) and the secondary bevel gear (33).