Integrated damping steering wheel
Technical Field
The utility model relates to a drive arrangement especially relates to rudder wheel with shock-absorbing structure.
Background
The steering wheel is a transportation driving device with walking and steering functions, generally, the steering wheel adopts a structure of a driver, a brush motor and a speed reducer with a fixed speed ratio, and a common structure is as the steering wheel driving device with a planetary speed reduction transmission mechanism (patent number CN 201720739862.5), and the steering wheel driving device comprises a supporting plate, a driving assembly, a steering mechanism and a planetary speed reduction transmission mechanism, wherein the driving assembly is arranged below the supporting plate, and the steering mechanism is arranged above the supporting plate. The drive assembly comprises a drive wheel mounting support, a drive wheel, a drive motor and a brake, the drive wheel mounting support is designed into a double-side support frame (a left support frame and a right support frame) of a double-arm support structure, the drive wheel mounting support is longitudinally arranged, and the drive wheel mounting support is arranged below the support plate. The driving wheel mounting bracket is also provided with a driving motor for promoting the rotation of the driving wheel, and the driving motor penetrates through the driving mounting bracket and is fixed with the driving wheel; and a steering mechanism for driving the driving wheel to rotate in the horizontal direction is also arranged on the supporting plate.
However, in the patent of "rudder wheel driving device with planetary reduction transmission", it can be found that when a load is applied on the upper part of the rudder wheel supporting plate, the rudder wheel can instantaneously bear a large acting force, the acting force acts on the rotating shaft of the driving wheel through the driving wheel bracket, so that the stress of the rotating shaft is suddenly increased, and the rotating shaft is bent and crushed, particularly, the rudder wheel runs on an uneven road, and the loss is more obvious.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an integration shock attenuation steering wheel has slowed down the effort that the rotation axis bore in the twinkling of an eye when the load increases.
The utility model adopts the technical proposal that: the utility model provides an integration shock attenuation steering wheel, includes the steering wheel body, the steering wheel body includes the backup pad, the backup pad below is provided with the drive wheel, the both sides of backup pad below still are provided with crank rocker structure, crank rocker structure includes first rocker, second rocker, third rocker and fourth rocker, first rocker rotates the rotation axis of connecting in the drive wheel, third rocker butt in the lower surface of backup pad, second rocker and/or fourth rocker have shock-absorbing structure.
As a further improvement of the utility model, shock-absorbing structure includes first connecting rod and second connecting rod, the first end of first connecting rod is rotated and is connected in the third rocker, the first end of second connecting rod is rotated and is connected in first rocker, still be fixed with elastomeric element between first connecting rod and the second connecting rod.
As a further improvement of the present invention, the elastic member is a spring, one end of the spring is connected to the first connecting rod, and the other end of the spring is connected to the second connecting rod.
As a further improvement of the present invention, the shock-absorbing structure further includes a guiding component, the guiding component includes a guiding sleeve and a guiding rod capable of sliding in the guiding sleeve, one end of the guiding rod is fixed at one end of the first connecting rod, and the guiding sleeve is fixed at one end of the second connecting rod.
As a further improvement the first connecting rod is provided with a baffle with the elastic component contact department, the second connecting rod is provided with the elastic component contact department, the elastic component is fixed to the one side of baffle, and first connecting rod or second connecting rod are fixed to the another side.
As a further improvement, the middle part of the first rocker is provided with a rolling bearing for connecting with the rotating shaft of the driving shaft.
As a further of the utility model, the third rocker just forms the contained angle with fourth rocker an organic whole is made, and the angle of contained angle is.
The utility model has the advantages that: through third rocker butt in the lower surface of backup pad, second rocker and/or fourth rocker are provided with shock-absorbing structure, transmit the effort that the backup pad received to shock-absorbing structure, have avoided the effort of load to transmit to the rotation axis in the twinkling of an eye, reduce the wearing and tearing of machine, have prolonged the life of rotation axis.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
FIG. 1 is a steering wheel shown in the background art;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a schematic structural diagram of the second rocker.
Detailed Description
In the background art, the conventional steering wheel as shown in fig. 1 has been mentioned, which includes a support plate 1, a driving assembly 100, a steering mechanism 200 and a planetary reduction gear 300, wherein the driving assembly 100 includes a driving wheel mounting bracket 110 and a driving wheel 120, the driving wheel mounting bracket 110 is designed as a double-arm support structure, the driving wheel mounting bracket 110 is arranged longitudinally, the support plate 1 is arranged at the upper end of the driving wheel mounting bracket 110, the driving wheel 120 is arranged between the double-arm support structure of the driving wheel mounting bracket 110, and a driving motor 130 for operating the driving wheel 120 is arranged outside the driving wheel mounting bracket 110.
The integrated damping steering engine shown in fig. 2 and 3 comprises a steering wheel body, wherein the steering wheel body comprises a support plate 1, a steering mechanism 200 capable of driving the steering wheel to rotate is arranged on the upper surface of the support plate 1, the structure of the steering mechanism 200 has been explained in detail in the background art, and the description is not repeated here. The crank rocker structure is further arranged below two sides of the supporting plate 1 and comprises a first rocker 2, a second rocker 3, a third rocker 4 and a fourth rocker 5, and the first rocker 2, the second rocker 3, the third rocker 4 and the fourth rocker 5 are sequentially connected in an end-to-end rotating mode. The first rocking bar 2 is rotatably connected to a rotating shaft of the driving wheel 120, the third rocking bar 4 is abutted to the lower surface of the supporting plate 1, and at least one of the second rocking bar 3 and the fourth rocking bar 5 is provided with a damping structure.
The second rocking bar 3 and/or the first rocking bar 2 are provided with a damping device, so that the acting force of the load on the rotating shaft of the driving wheel 120 can be effectively reduced, particularly the instant acting force during the loading process, and the rotating shaft is easily bent and deformed by the suddenly increased external force, so that the abrasion of the rotating shaft is caused.
Specifically, the first rocker 2 is rotatably connected to the rotating shaft of the driving wheel 120, and the specific connection can refer to the connection manner between the driving wheel mounting bracket 110 and the driving wheel 120 in the patent of the background art, or can be achieved by providing a rolling bearing in the middle of the first rocker 2, which is sleeved on the rotating shaft of the driving wheel 120. The rolling bearing ensures that the rotation shaft and the first rocker 2 rotate independently of one another.
The second rocker 3 is fixed at the first end of the first rocker 2, the fourth rocker 5 is fixed at the second end of the first rocker 2, and the third rocker 4 is connected between the fourth rocker 5 and the second rocker 3. Wherein the second rocker 3 and/or the fourth rocker 5 are provided with a damping structure. The third rocker 4 and the fourth rocker 5 are fixedly connected, an included angle is formed between the third rocker 4 and the fourth rocker 5, and the included angle is preferably 90 degrees or the third rocker 4 and the fourth rocker 5 are integrally formed to keep the two perpendicular to each other.
In this embodiment, the second rocking bar 3 is provided with a shock absorbing structure, the shock absorbing structure comprises a first connecting rod 311 and a second connecting rod 312, a first end of the first connecting rod 311 is rotatably connected to the third rocking bar 4, a first end of the second connecting rod 312 is rotatably connected to the first rocking bar 2, and an elastic component 313 is arranged between the first connecting rod 311 and the second connecting rod 312. A guide member is further disposed between the first link 311 and the second link 312, and the guide member is used to ensure that the guide support plate 1 extends and contracts in a fixed direction after receiving a load acting force. Specifically, the guide member includes a guide sleeve 32 and a guide rod 33 slidable within the guide sleeve 32, one end of the guide rod 33 is fixedly connected to the second end of the first link 311, and one end of the guide sleeve 32 is connected to the second end of the second link 312. The elastic member 313 selects a spring in which the guide member is disposed. One end of the spring is fixed to the first link 311 and the other end of the spring is fixed to the second link 312. In order to ensure the clarity of fig. 2, the elastic member 313 is drawn on the first rocking bar 2 only on one side of the support plate 1, and the elastic member 313 is omitted in fig. 3.
Further, the stoppers 34 are provided at the contact portions of the first link 311 and the elastic member 313 and at the contact portions of the second link 312 and the elastic member 313, respectively, and the stoppers 34 increase the contact area between the elastic member 313 and the first link 311 and the second link 312 to prevent the elastic member 313 from falling off. Preferably, the elastic member 313 and the guide member are fixed to the barrier 34.
In the damping device, the elastic member 313 mainly plays a role of reducing the acting force applied to the rotating shaft when the instant force applied to the support plate 1 by the load, thereby playing a role of buffering.
The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.