CN212267621U

CN212267621U - Electric steering wheel system and agricultural machine

Info

Publication number: CN212267621U
Application number: CN202020707771.5U
Authority: CN
Inventors: 颜丙新; 肖跃进; 高娜娜; 孟志军
Original assignee: Beijing Research Center of Intelligent Equipment for Agriculture
Current assignee: Beijing Research Center of Intelligent Equipment for Agriculture
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-01-01
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to the field of agricultural machinery, a electronic steering wheel system and agricultural machine is provided. The electric steering wheel system comprises a reduction gearbox, an electric rotary driving piece and a steering wheel, wherein an installation shaft is installed in the reduction gearbox in a rotating mode, the electric rotary driving piece is installed outside the reduction gearbox, the output end of the electric rotary driving piece is fixedly connected with a small gear, the small gear is fixedly sleeved on a large gear of the installation shaft in a sleeved mode, a small transmission wheel is fixedly sleeved on the installation shaft and is in transmission connection with a large transmission wheel, the steering wheel is fixedly connected with the large transmission wheel, and the small gear, the large gear, the small transmission wheel and the large transmission wheel are all located in the reduction. The utility model provides an electric steering wheel system through the two-stage speed reduction, reduces the requirement that turns to the device to the output torque of electric rotary driving piece itself, can select the electric rotary driving piece of littleer volume, makes whole electric steering wheel system compacter, and the two-stage speed reduction can provide bigger reduction ratio moreover, helps improving control accuracy.

Description

Electric steering wheel system and agricultural machine

Technical Field

The utility model relates to the technical field of agricultural machinery, especially, relate to an electronic steering wheel system and agricultural machine.

Background

With the development of precision agriculture, the application of the automatic navigation technology in the agricultural field is more and more extensive. The automatic control steering wheel is used as a core component of an automatic navigation technology and is used for realizing control of automatic navigation steering and the like. Among them, the electric steering wheel is widely used because of its advantages such as convenient installation, high control accuracy, and the like.

The existing electric steering wheel mainly comprises: the first is that the motor directly drives the steering wheel to rotate, and because the rotating speed and the output torque of the motor cannot meet the driving requirement of the rotation of the steering wheel easily, the direct driving mode is not popularized and applied in practical application; the second is that a rubber rotating wheel is arranged on an output shaft of the motor, and the steering wheel is driven to rotate through the transmission of the rubber rotating wheel, so that after the rubber rotating wheel is used for a long time, the abrasion of the rubber rotating wheel is serious, the friction force is reduced, and further, the transmission failure or the control precision is lowered; the third is to transmit the power of the motor by means of a chain wheel or a primary gear to improve the output torque of the motor, but the problem of low rotating speed, large output torque and low control precision of the motor still exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic steering wheel system and agricultural machine for solve current electronic steering wheel and require high and the low problem of control accuracy to motor torque and rotation speed.

In order to solve the technical problem, the utility model provides an electric steering wheel system, including reducing gear box, electric rotary driving spare and steering wheel, the installation axle is installed to the reducing gear box internal rotation, electric rotary driving spare is installed outside the reducing gear box, electric rotary driving spare's output and pinion fixed connection, the pinion with fix the cup joint in the gear wheel meshing of installation axle, it has the transmission steamboat to install epaxial still fixed the cup joint, the transmission steamboat is connected with the transmission bull wheel transmission, the steering wheel with transmission bull wheel fixed connection, the pinion the gear wheel the transmission steamboat with the transmission bull wheel all is located in the reducing gear box.

The gearbox comprises a gearbox cover fixedly connected with the gearbox, wherein the gearbox cover is provided with a first bearing seat, the gearbox is provided with a second bearing seat, the first bearing seat is used for accommodating a first bearing and is fixedly connected with an outer ring of the first bearing, an inner ring of the first bearing is fixedly sleeved at one end of an installation shaft, the second bearing seat is used for accommodating a second bearing and is fixedly connected with an outer ring of the second bearing, and an inner ring of the second bearing is fixedly sleeved at the other end of the installation shaft.

The reduction gearbox is provided with a third bearing seat for accommodating a third bearing, an outer ring of the third bearing is fixedly arranged on the third bearing seat, an inner ring of the third bearing is fixedly arranged on a connecting shaft, and the connecting shaft is fixedly inserted in the transmission bull wheel and is fixedly connected with the steering wheel.

The reduction box cover is provided with a first through hole, the reduction box is provided with a second through hole, the hole axis of the second through hole coincides with the first through hole, the hole axis of the second through hole coincides with the central axis of the third bearing seat, one end of the connecting shaft penetrates through the first through hole and is fixedly connected with the steering wheel, and the other end of the connecting shaft penetrates through the second through hole and is fixedly connected with the steering shaft.

The end part of the connecting shaft is provided with a spline which is used for being in spline fit with the steering shaft.

The electric rotary driving component comprises a box body, a steering shaft, a cable and a reduction box bottom cover, wherein the reduction box bottom cover is fixedly connected with the bottom of the reduction box, the reduction box bottom cover is provided with a box body for containing the electric rotary driving component and a clamping part for clamping the steering shaft, and the side wall of the box body is provided with a cable hole for installing a cable.

The clamping part comprises a clamping hole and two clamping teeth, the clamping teeth are located in the hole of the clamping hole and used for inserting a steering shaft, and a fastening piece penetrates through the two clamping teeth which are oppositely arranged to clamp the steering shaft.

The small transmission wheel and the large transmission wheel are chain wheels, and the two chain wheels are in transmission connection through chains.

The transmission ratio of the small gear to the large gear is 2: 1-4: 1, and the transmission ratio of the small transmission gear to the large transmission gear is 10: 2-10: 5.

In addition, the utility model also provides an agricultural machine, include as above electric steering wheel system.

In the electric steering wheel system provided by the utility model, the pinion and the gearwheel are meshed to form a first-stage speed reduction; the transmission steamboat is connected with the transmission bull wheel transmission and forms the second grade speed reduction, through the two-stage speed reduction, reduces the requirement of turning to device to electric rotary driving piece output torque itself to can select the electric rotary driving piece of littleer volume under the condition that satisfies electric steering wheel system's transmission requirement, make whole electric steering wheel system compacter, the two-stage speed reduction can provide bigger reduction ratio moreover, helps improving control accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a cross-sectional view of an electric steering wheel system according to an embodiment of the present invention;

fig. 2 is a plan view of a reduction box cover according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the gearbox cover shown in FIG. 2 taken along the direction B-B;

FIG. 4 is a top view of the reduction box according to the embodiment of the present invention;

FIG. 5 is a cross-sectional view of the reduction gearbox of FIG. 4 taken along the direction C-C;

fig. 6 is a sectional view of a connecting shaft according to an embodiment of the present invention;

FIG. 7 is a perspective view of the reduction box according to the embodiment of the present invention;

fig. 8 is a cross-sectional view of the reduction gearbox shown in fig. 7.

In the figure: 1. a reduction gearbox; 101. a second bearing housing; 102. a third bearing seat; 103. a second through hole; 2. an electric rotary drive; 3. a steering wheel; 4. installing a shaft; 5. a pinion gear; 6. a bull gear; 7. a small transmission wheel; 8. a transmission bull wheel; 9. a reduction box cover; 901. a first bearing housing; 902. a first through hole; 10. a first bearing; 11. a second bearing; 12. a third bearing; 13. a connecting shaft; 131. a spline; 14. a reduction box bottom cover; 141. a bin body; 142. a harness hole; 143. a clamping hole; 144. clamping teeth; 145. a fastener; 15. and a chain.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a cross-sectional view of an electric steering wheel system according to an embodiment of the present invention. As shown in fig. 1, the electric steering wheel system comprises a reduction gearbox 1, an electric rotary driving part 2 and a steering wheel 3, an installation shaft 4 is installed in the reduction gearbox 1 in a rotating mode, the output end of the electric rotary driving part 2 is fixedly connected with a small gear 5, the small gear 5 is meshed with a large gear 6 fixedly sleeved on the installation shaft 4, a small transmission gear 7 is fixedly sleeved on the installation shaft 4, the small transmission gear 7 is in transmission connection with a large transmission gear 8, and the steering wheel 3 is fixedly connected with the large transmission gear 8. The small gear 5, the large gear 6, the small transmission wheel 7 and the large transmission wheel 8 are all positioned in the reduction gearbox 1, and the electric rotary driving piece 2 is positioned outside the reduction gearbox 1.

In the electric steering wheel system provided by the embodiment of the utility model, the pinion 5 and the gearwheel 6 are meshed to form a first-stage speed reduction; the small transmission wheel 7 and the large transmission wheel 8 are in transmission connection to form two-stage speed reduction, and the requirement of the steering device for the output torque of the electric rotary driving piece 2 per se is reduced through two-stage speed reduction, so that the electric rotary driving piece with smaller volume can be selected under the condition of meeting the transmission requirement of the electric steering wheel system, and the whole electric steering wheel system is more compact. In addition, two-stage speed reduction can provide a larger speed reduction ratio, and is beneficial to improving control precision.

On the basis of the above embodiment, the electric steering wheel system further includes a reduction box cover 9 fixedly connected with the reduction box 1. Fig. 2 is a plan view of a reduction box cover according to an embodiment of the present invention; figure 3 is a cross-sectional view of the gear box cover of figure 2 taken along the direction B-B. As shown in fig. 2 and 3, the reduction box cover 9 is configured with a first bearing seat 901, the reduction box 1 is configured with a second bearing seat 101, the first bearing seat 901 is used for accommodating the first bearing 10 and is fixedly connected with an outer ring of the first bearing 10, an inner ring of the first bearing 10 is fixedly sleeved on one end of the mounting shaft 4, the second bearing seat 101 is used for accommodating the second bearing 11 and is fixedly connected with an outer ring of the second bearing 11, and an inner ring of the second bearing 11 is fixedly sleeved on the other end of the mounting shaft 4.

Specifically, the reduction box cover 9 is fixedly connected with the reduction box 1 through screws, two ends of the mounting shaft 4 are respectively provided with a bearing, and the rotation of the mounting shaft 4 relative to the reduction box 1 is realized through the bearings. Under the drive of the electric rotary driving part 2, the pinion 5 rotates along with the driving shaft to drive the large gear 6 meshed with the pinion 5 to rotate, so that the mounting shaft 4 fixedly connected with the large gear 6 rotates along with the driving shaft to drive the small transmission wheel 7 sleeved on the mounting shaft 4 to rotate, and further drive the large transmission wheel 8 to rotate, and power is transmitted to the steering wheel 3.

FIG. 4 is a top view of the reduction box according to the embodiment of the present invention; FIG. 5 is a cross-sectional view of the reduction gearbox of FIG. 4 taken along the direction C-C. As shown in fig. 4 and 5, the reduction gearbox 1 is further configured with a third bearing seat 102 for accommodating a third bearing 12, an outer ring of the third bearing 12 is fixedly mounted on the third bearing seat 102, an inner ring of the third bearing 12 is fixedly mounted on a connecting shaft 13, and the connecting shaft 13 is fixedly inserted into the transmission bull wheel 8 and is fixedly connected with the steering wheel 3. In the embodiment of the utility model, the transmission bull wheel 8 is sleeved and fixed on the connecting shaft 13, and the connecting shaft 13 can rotate relative to the reduction gearbox 1 through the third bearing 12; under the drive of the electric rotary driving part 2, the transmission large wheel 8 drives the connecting shaft 13 to rotate together, so as to drive the steering wheel 3 connected with the connecting shaft to rotate.

Further, as shown in fig. 2 and 3, the reduction case cover 9 is provided with a first through hole 902. As shown in fig. 4 and 5, the reduction gearbox 1 is provided with a second through hole 103 with a hole axis coinciding with the first through hole 902, and the hole axis of the second through hole 103 coincides with the central axis of the third bearing seat 102. One end of the connecting shaft 13 passes through the first through hole 902 to be fixedly connected with the steering wheel 3, and the other end of the connecting shaft 13 passes through the second through hole 103 to be fixedly connected with the steering shaft while being assembled with the third bearing 12. The embodiment of the utility model provides an electronic steering wheel system, outside reducing gear box 1 was stretched out respectively at the both ends of connecting axle 13, wherein one end and 3 bolt fixed connections of steering wheel, the other end be used for with steering spindle fixed connection. Fig. 6 is a sectional view of a connecting shaft according to an embodiment of the present invention. Specifically, as shown in fig. 6, the end of the connecting shaft 13 is provided with a spline 131 for spline-fitting with the steering shaft, and the fixed connection of the steering shaft and the connecting shaft 13 is realized by means of the spline 131, so that the steering shaft is driven to move under the driving of the electric rotary driving element 2, and the moving direction of the agricultural machine is adjusted.

Specifically, the electric steering wheel system further comprises a reduction gearbox bottom cover 14 fixedly connected with the bottom of the reduction gearbox 1. The edge of the reduction gearbox bottom cover 14 is provided with a screw hole, and a screw passes through the screw hole to be matched with the threaded hole on the reduction gearbox 1, so that the reduction gearbox 1 is fixedly connected with the reduction gearbox bottom cover 14. Fig. 7 is a perspective view of the reduction gearbox of the embodiment of the present invention. Fig. 8 is a cross-sectional view of the reduction gearbox shown in fig. 7. As shown in fig. 7 and 8, the reduction gearbox bottom cover 14 is configured with a cabin body 141 for receiving the electric rotary driver 2 and a clamping portion for clamping the steering shaft. The side wall of the bin body 141 is provided with a wire harness hole 142 for installing a cable. The electric rotary driving member 2 may be a rotary electric machine or a hydraulic motor, and a cable connected thereto is passed through the harness hole 142 to be communicatively connected with an external controller.

As shown in fig. 7, the clamping portion includes a clamping hole 143 and two clamping teeth 144, and the clamping teeth 144 are located at the opening of the clamping hole 143. When the steering shaft clamping device is used, the steering shaft is inserted into the clamping hole 143, the fastening piece 145 penetrates through the two clamping teeth 144 which are oppositely arranged to clamp the steering shaft, and the steering shaft is fixedly connected with the connecting shaft 13. As shown in fig. 1, the fastening member 145 may be a butterfly bolt or other fastening member, and the embodiment of the present invention is not particularly limited thereto.

The embodiment of the utility model provides an in, transmission steamboat 7 is the sprocket with transmission bull wheel 8, connects through the 15 transmissions of chain between two sprockets. In addition, the small transmission wheel 7 and the large transmission wheel 8 can also adopt mutually meshed gear structures, as long as the small transmission wheel and the large transmission wheel are mutually matched to realize primary speed reduction. The transmission ratio between the small transmission wheel 7 and the large transmission wheel 8 and the transmission ratio between the small transmission wheel 5 and the large transmission wheel 6 can be specifically set according to the rotating speed and the output torque of the electric rotary driving element 2. For example, the transmission ratio between the small gear 5 and the large gear 6 is 2:1, and the transmission ratio between the small transmission gear 7 and the large transmission gear 8 is 10: 3.

In addition, the embodiment of the utility model provides an agricultural machine is still provided, including above-mentioned electronic steering wheel system, this agricultural machine can realize miniaturization and directional control's precision through adopting above-mentioned electronic steering wheel system.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The electric steering wheel system is characterized by comprising a reduction gearbox, an electric rotary driving piece and a steering wheel, wherein an installation shaft is installed in the reduction gearbox in a rotating mode, the electric rotary driving piece is installed outside the reduction gearbox, the output end of the electric rotary driving piece is fixedly connected with a small gear, the small gear is fixedly connected with a large gear of the installation shaft in a sleeved mode, a small transmission wheel is fixedly connected to the installation shaft in a sleeved mode and is in transmission connection with a large transmission wheel, the steering wheel is fixedly connected with the large transmission wheel, and the small gear, the large gear, the small transmission wheel and the large transmission wheel are located in the reduction gearbox.

2. The electric steering wheel system according to claim 1, further comprising a reduction box cover fixedly connected to the reduction box, wherein the reduction box cover is configured with a first bearing seat, the reduction box is configured with a second bearing seat, the first bearing seat is configured to receive a first bearing and is fixedly connected to an outer ring of the first bearing, an inner ring of the first bearing is fixedly sleeved on one end of the mounting shaft, the second bearing seat is configured to receive a second bearing and is fixedly connected to an outer ring of the second bearing, and an inner ring of the second bearing is fixedly sleeved on the other end of the mounting shaft.

3. The electric steering wheel system of claim 2, wherein the reduction gearbox is configured with a third bearing seat for receiving a third bearing, an outer race of the third bearing is fixedly mounted to the third bearing seat, an inner race of the third bearing is fixedly mounted to a connecting shaft, and the connecting shaft is fixedly inserted into the transmission bull wheel and fixedly connected to the steering wheel.

4. The electric steering wheel system according to claim 3, wherein the reduction box cover is provided with a first through hole, the reduction box is provided with a second through hole having a hole axis coinciding with the first through hole, the hole axis of the second through hole coinciding with the central axis of the third bearing block, one end of the connecting shaft passes through the first through hole to be fixedly connected with the steering wheel, and the other end of the connecting shaft passes through the second through hole to be fixedly connected with the steering shaft.

5. The electric steering wheel system according to claim 4, wherein an end of the connecting shaft is provided with a spline for spline-fitting with the steering shaft.

6. The electric steering wheel system of claim 1, further comprising a reduction gearbox bottom cover fixedly connected to a bottom of the reduction gearbox, wherein the reduction gearbox bottom cover is configured with a cabin body for receiving the electric rotary driving member and a clamping portion for clamping the steering shaft, and a wire harness hole for installing a wire is formed in a side wall of the cabin body.

7. The electric steering wheel system according to claim 6, wherein the clamping portion includes a clamping hole and two clamping teeth, the clamping teeth are located at an aperture of the clamping hole for inserting the steering shaft, and a fastening member passes through the two clamping teeth arranged oppositely to clamp the steering shaft.

8. The electric steering wheel system according to claim 1, wherein the small transmission wheel and the large transmission wheel are chain wheels, and the two chain wheels are in transmission connection through a chain.

9. The electric steering wheel system according to claim 1, wherein the transmission ratio of the small gear to the large gear is 2: 1-4: 1, and the transmission ratio of the small transmission gear to the large transmission gear is 10: 2-10: 5.

10. An agricultural machine comprising an electric steering wheel system according to any one of claims 1 to 9.