CN107191583B

CN107191583B - Driving wheel

Info

Publication number: CN107191583B
Application number: CN201710544422.9A
Authority: CN
Inventors: 叶青云
Original assignee: Ningbo Ruyi JSCL
Current assignee: Ningbo Ruyi JSCL
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2023-10-20
Anticipated expiration: 2037-07-06
Also published as: CN107191583A

Abstract

The present invention provides a drive wheel comprising: a driving wheel mounting seat; the connecting bearing inner ring is sleeved on the driving wheel mounting seat; the bearing seat is connected with the outer ring of the connecting bearing, and can keep relative movement with the driving wheel mounting seat through the connecting bearing; the steering gear ring is sleeved on the bearing seat, and is in linkage connection with the bearing seat; the gear box is fixedly connected with the bearing seat, and a driving gear and a wheel shaft are arranged in the gear box; the driven gear is arranged on the wheel shaft and meshed with the driving gear; the first adjusting module is disposed on the axle, and presses the driven gear by moving axially on the axle, thereby adjusting a gap between the driven gear and the driving gear. The beneficial effects of the invention are as follows: the structure of the driving wheel is ingenious, machining errors can be eliminated during production and installation, the steering structure is reliable, and the steering structure is not easy to damage.

Description

Driving wheel

Technical Field

The invention belongs to the technical field of driving wheels of electric vehicles, and relates to a driving wheel.

Background

The drive wheel is the driving running part of the electric vehicle and the drive assembly drives the wheel in rotation to move the vehicle, and it is worth noting that the electric vehicle may preferably be an electric fork-lift truck, in particular a drive wheel on an electric fork-lift truck.

However, the existing driving wheel is unreasonable in structure, and has more defects in production and use, wherein obvious defects are that the gear clearance is unreasonable in production and installation, and the driving gear and the driven gear are inconvenient to install, so that errors can occur in production and installation; the steering structure is rigidly connected, so that the steering structure is easy to damage when in use, and the service life of the driving wheel is reduced.

Therefore, a driving wheel which has a smart structure, can eliminate machining errors during production and installation, has a reliable steering structure and is not easy to damage is needed at present.

Disclosure of Invention

The object of the present invention is to address the above-mentioned problems of the prior art and to propose a driving wheel.

The aim of the invention can be achieved by the following technical scheme: a drive wheel, comprising:

the driving wheel mounting seat is fixedly provided with a driving motor;

the inner ring of the connecting bearing is sleeved on the driving wheel mounting seat;

a bearing housing connected with an outer ring of the connection bearing, and the bearing housing can keep relative movement with the driving wheel mounting seat through the connection bearing;

the steering gear ring is sleeved on the bearing seat and is in linkage connection with the bearing seat;

the gear box is fixedly connected with the bearing seat, and a driving gear and a wheel shaft are arranged in the gear box;

a driven gear provided on the wheel shaft, and meshed with the driving gear;

and a first adjusting module provided on the wheel shaft, and pressing the driven gear by moving axially on the wheel shaft, thereby adjusting a gap between the driven gear and the driving gear.

Preferably, the axle is further provided with a first bearing and a second bearing, two ends of the first bearing are in abutting connection with the driven gear and the first adjusting module, and the second bearing is located at the inner end of the axle.

Preferably, the driving wheel mounting seat comprises a mounting end face and a columnar structure integrally connected with the mounting end face, the driving motor is fixed on the mounting end face, and the number of the connecting bearings is two and is respectively located at the upper end and the lower end of the columnar structure.

Preferably, an inner port and an outer port corresponding to the inner port in parallel are formed in the gear box, the outer ring of the first bearing is arranged in the outer port, the inner ring is arranged at the outer end of the wheel shaft, the outer ring of the second bearing is arranged in the inner port, the inner ring is arranged at the outer ring of the wheel shaft, a second adjusting module capable of moving along the axial direction of the wheel shaft is arranged on the inner port, the second adjusting module is in abutting connection with the second bearing, and the second adjusting module extrudes the outer ring of the second bearing through axial movement so as to adjust the gap of the second bearing.

Preferably, a steering motor is arranged on the mounting end face, a steering gear is arranged on the shaft of the steering motor, and the steering gear is meshed with the steering gear ring, so that the bearing seat is driven to steer through the steering gear ring.

Preferably, the first adjusting module is a first adjusting screw ring with external threads, the external port is provided with internal threads, and the first adjusting screw ring is in threaded connection with the external port and axially moves on the wheel shaft through threads.

Preferably, the second adjusting module is a second adjusting screw ring with external threads, the inner port is provided with internal threads, and the second adjusting screw ring is connected in the inner port in a threaded manner and moves along the axial direction of the wheel shaft through threads.

Preferably, the lower end of the columnar structure is provided with a step part, the step part is connected with a third adjusting screw ring capable of moving axially in a threaded manner, and the outer edge of the third adjusting screw ring is abutted against the connecting bearing positioned on the lower side of the columnar structure and can push the connecting screw ring to move.

Preferably, the upper end face of the steering gear ring is connected with a limiting seat for limiting the steering angle of the steering gear ring.

Preferably, a gear shaft is vertically arranged in the gear box, and the gear shaft is in linkage connection with the driving motor.

Compared with the prior art, the invention has the beneficial effects that:

1. the structure of the driving wheel is ingenious, machining errors can be eliminated during production and installation, the steering structure is reliable, and the steering structure is not easy to damage.

2. The outer port downside is provided with set screw, and set screw can upwards remove through the screw thread to withstand first adjusting module, restrict its removal.

3. The first adjusting screw ring is screwed to move on the wheel shaft and extrude the driven gear, and the purpose is achieved in a threaded transmission mode, so that the adjusting precision can be further improved, the processing error is eliminated, and the operation is more simple and reliable.

4. When the second adjusting screw ring extrudes the second bearing, the gap between the driven gear and the driving gear can be reduced, the gap between the driven gear and the driving gear can be increased, the adjusting function is more perfect, and the driving gear and the driven gear can be conveniently adjusted to the optimal gap, so that the machining error is eliminated; the gap between the first bearing and the second bearing can also be adjusted.

5. The columnar mechanism is provided with two connecting bearings, so that the bearing seat is stressed more uniformly and stably during rotation, and the bearing seat can be prevented from moving between the rotating bearing seat and the driving wheel mounting seat, thereby avoiding abrasion between the bearing seat and the driving wheel mounting seat.

6. The third adjusting screw ring not only can adjust the interval between the two connecting bearings, but also can facilitate the installation of the connecting bearings at the lower side, further improves the installation and adjustment precision, and is simpler when eliminating the machining error and more reliable in operation.

Drawings

FIG. 1 is a block diagram of a drive wheel of the present invention;

FIG. 2 is a diagram of the connection of the components within the gearbox of the present invention;

FIG. 3 is a schematic view of the gearbox of the present invention;

fig. 4 is a schematic structural view of a driving wheel mounting seat according to the present invention.

100, a driving wheel mounting seat; 110. a driving motor; 120. a mounting end face; 130. a columnar structure; 131. a step part; 132. a third adjusting coil; 140. a steering motor; 141. a steering gear; 200. connecting a bearing; 300. a bearing seat; 400. steering gear ring; 410. a limit seat; 500. a gear box; 510. a drive gear; 520. a wheel axle; 521. a first bearing; 522. a second bearing; 530. a driven gear; 540. a gear shaft; 550. an outer port; 560. an inner port; 600. a first adjusting coil; 700. and a second adjusting screw ring.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3 and 4, a driving wheel is preferably applied to an electric vehicle, and particularly to an electric forklift.

The driving wheel includes: the driving wheel mount 100, the connection bearing 200, the bearing housing 300, the steering ring gear 400, the gear box 500, the driven gear 530, and the first adjustment module.

The working principle is as follows: the gap between the driving gear 510 and the driven gear 530 can be adjusted, the steps for adjusting are fewer, the operation is simpler, and the adjusting precision is higher; the steering gear ring 400 can be driven to rotate the bearing seat 300, and the connecting bearing 200 is arranged between the bearing seat 300 and the driving wheel mounting seat 100, so that smooth relative movement can be kept between the bearing seat 300 and the driving wheel mounting seat 100.

Wherein, the driving wheel mounting seat 100 is fixedly provided with a driving motor 110; the driving wheel mounting seat 100 is the uppermost part of the whole driving wheel, and is fixedly provided with a driving motor 110, wherein the driving motor 110 is the power part of the whole driving wheel and is used for driving the wheel to rotate.

The connecting bearing 200 is a bearing piece, preferably a tapered roller bearing, and an inner ring of the connecting bearing 200 is sleeved on the driving wheel mounting seat 100; the connecting bearing 200 is actually located between the drive wheel mount 100 and the bearing housing 300, thereby enabling the bearing housing 300 to rotate relative to the drive wheel mount 100.

A bearing housing 300 coupled to an outer ring of the coupling bearing 200, and the bearing housing 300 is maintained in relative motion with the driving wheel mount 100 through the coupling bearing 200;

the bearing housing 300 has a cylindrical shape and a lower end thereof has an annular outer periphery, in short, the bearing housing 300 is provided with a through hole in which the columnar structure 130 of the driving wheel mount 100 is inserted, and the connection bearing 200 is disposed between the driving wheel mount 100 and an inner wall of the through hole of the bearing housing 300.

The steering gear ring 400 is sleeved on the bearing seat 300, and the steering gear ring 400 is in linkage connection with the bearing seat 300; more precisely, the steering gear ring 400 is sleeved on the outer wall of the cylindrical structure of the bearing seat 300, and is connected with the bearing seat 300 in a linkage manner; when the steering gear ring 400 rotates, the bearing housing 300 can be driven to rotate, and the steering gear ring 400 corresponds to a driver of the bearing housing 300.

A gear case 500 fixedly connected to the bearing housing 300, wherein a driving gear 510 and a wheel shaft 520 are provided in the gear case 500; the gear case 500 is a box-shaped object having an inner cavity, and in short, the driving motor 110 drives the driving gear 510 in the gear case 500 to rotate, thereby functioning to transmit power and to decelerate.

The steering gear ring 400 is provided with a stud bolt penetrating through the bearing housing 300 and the gear case 500 in order, and the steering gear ring 400, the bearing housing 300 and the gear case 500 are connected by screwing the stud bolt, so that the three are linked.

In the present driving wheel, the gear box 500 is mainly used for installing the first adjusting module, the driving gear 510 and the driven gear 530, and the driving gear 510 and the driven gear 530 can be located at proper positions, so that the first adjusting module can adjust the gap between the driving gear 510 and the driven gear 530.

The driving gear 510 is a gear coupled to the driving motor 110, and is disposed in the gear box 500.

A driven gear 530 is provided on the wheel shaft 520, and the driven gear 530 is engaged with the driving gear 510 to drive the wheel shaft 520 to rotate.

The first adjusting module is a member capable of adjusting the position of the driven gear 530, which is provided on the wheel shaft 520, and presses the driven gear 530 by moving axially on the wheel shaft 520, thereby adjusting a gap between the driven gear 530 and the driving gear 510.

Further, the first adjusting module has a hole for the axle 520 to pass through, so that the first adjusting module is sleeved on the axle 520 and is located outside the driven gear 530.

And the first adjustment module presses the driven gear 530 by moving axially on the axle 520, thereby adjusting a gap between the driven gear 530 and the driving gear 510.

In an actual structure, the outer end surface of the first adjustment module may be inserted into the opening of the gear case 500, and it may be preferable to provide external threads on the first adjustment module and internal threads on the opening of the gear case 500, and the external threads and the internal threads may be axially moved by the threads, or the external threads may be connected by interference, and the driven gear 530 may be pressed by pressing the first adjustment module.

Here, the clearance between the driven gear 530 and the driving gear 510 is preferably adjusted by axially moving the screw, and when the first adjusting module is screwed during adjustment, the first adjusting module can be moved towards the driven gear 530, so that the clearance between the driving gear 510 and the driven gear 530 is gradually adjusted, and the purpose of eliminating the machining error is achieved.

As shown in fig. 1, 2 and 3, in addition to the above embodiment, the axle 520 is further provided with a first bearing 521 and a second bearing 522, two ends of the first bearing 521 are in abutting connection with the driven gear 530 and the first adjusting module, and the second bearing 522 is located at an inner end of the axle 520.

Further, the outer race of the second bearing 522 of the first bearing 521 is actually fixed to the gear case 500, and the inner race is fixed to the wheel shaft 520.

The two ends of the first bearing 521 are in interference connection with the driven gear 530 and the first adjusting module, and the second bearing 522 is located at the inner end of the axle 520.

Since the first bearing 521 is located between the driven gear 530 and the first adjustment module, when the first adjustment module moves toward the inside of the wheel shaft 520, the first bearing 521 first presses the outer ring of the first bearing 521, and the first bearing 521 transmits the thrust to the driven gear 530, so that the first bearing 521 and the driven gear 530 move toward the driving gear 510 at the same time.

This structure is very reasonable, and when fine machining errors are adjusted, the errors of the first bearing 521 can be adjusted, so that the front end surfaces of the inner rings of the first bearing 521 and the driven gear 530 closely abut against each other.

As shown in fig. 1 and 4, the driving wheel mounting base 100 includes a mounting end surface 120 and a columnar structure 130 integrally connected to the mounting end surface 120, and in brief, the driving wheel mounting base 100 is similar to a cap structure.

The driving motor 110 is fixed on the mounting end face 120, and the number of the connecting bearings 200 is two and the connecting bearings are respectively located at the upper end and the lower end of the columnar structure 130.

The columnar structure 130 is provided with a shaft hole communicated with the mounting end face 120, and the driving motor 110 is fixed on the mounting end face 120, that is, the driving motor 110 is located at the topmost end of the driving wheel mounting seat 100.

The driving motor 110 is provided with a gear shaft 540, the gear shaft 540 is inserted into the shaft hole, and when the gear shaft 540 rotates, torque can be transmitted to the driving gear 510.

As shown in fig. 3, in the above embodiment, an inner port 560 and an outer port 550 corresponding to the inner port 560 in parallel are formed in the gear case 500, the outer ring of the first bearing 521 is disposed in the outer port 550 and the inner ring is disposed on the outer end of the axle 520, and the outer ring of the second bearing 522 is disposed in the inner port 560 and the inner ring is disposed on the outer ring of the axle 520.

The inner port 560 is provided with a second adjusting module that is movable in the axial direction of the axle 520, the second adjusting module is in abutting connection with the second bearing 522, and the second adjusting module presses the outer ring of the second bearing 522 by the axial movement to adjust the gap of the second bearing 522.

Specifically, the second adjustment module is capable of adjusting the spacing between the first bearing 521 and the second bearing 522 and the gap of the second bearing 522; the second adjustment module may preferably be disposed in the inner port 560, and may be provided with an internal thread in the inner port 560, and an external thread on the outer circumference of the second adjustment module, which is axially moved by means of a threaded connection, so that upon screwing the second adjustment module, the second adjustment module presses the second bearing 522, thereby moving the second bearing 522, which can thus play a role in adjusting the pitch.

As shown in fig. 1, on the basis of the above embodiment, a steering motor 140 is disposed on the mounting end surface 120, a steering gear 141 is disposed on the shaft of the steering motor 140, and the steering gear 141 is meshed with the steering gear ring 400, so that the bearing seat 300 is driven to steer by the steering gear ring 400.

It should be noted that the steering motor 140 may be driven by a hydraulic motor, and the steering motor 140 is used to drive the steering gear 141, so as to achieve the purpose of driving the wheels to rotate through an electromechanical structure.

As shown in fig. 1, 2 and 3, the first adjusting module is a first adjusting screw 600 having external threads, the external port 550 has internal threads, and the first adjusting screw 600 is screwed into the external port 550 and axially moves on the axle 520 through threads.

In the actual working process, the first adjusting screw 600 is screwed to move on the wheel shaft 520 and press the driven gear 530, so that the above purpose is achieved in a threaded transmission manner, the adjusting precision can be further improved, the operation is simpler when the processing error is eliminated, and the operation is more reliable.

As shown in fig. 1, 2 and 3, the second adjusting module is a second adjusting screw 700 having external threads, the inner port 560 has internal threads thereon, and the second adjusting screw 700 is screwed into the inner port 560 and is moved in the axial direction of the wheel shaft 520 by the threads.

In the actual working process, the second adjusting screw 700 is screwed to move along the axial direction of the wheel shaft 520 on the inner port 560, the secondary bearing 522 is extruded to adjust the clearance of the bearing, and the purpose is achieved in a threaded transmission mode, so that the adjusting precision can be further improved, the processing error is eliminated, and the operation is simpler and more reliable.

It should be noted that, a spacer is further disposed on the axle 520, and two ends of the spacer are in abutting connection with the second bearing 522 and the driven gear 530, when the second adjusting screw 700 presses the second bearing 522, the driven gear 530 is pressed by the spacer, so that the driven gear 530 moves toward the first adjusting screw 600.

As shown in fig. 4, in the above embodiment, the lower end of the columnar structure 130 is provided with a step portion 131, and the step portion 131 is a circle of groove formed at the lower end of the columnar structure 130.

The step portion 131 is connected with a third adjusting screw 132 capable of moving axially in a threaded manner, and the outer edge of the third adjusting screw 132 abuts against the connecting bearing 200 located at the lower side of the columnar structure 130 and can push the connecting screw to move.

Since one of the coupling bearings 200 is located at the lower side of the pillar structure 130, and more particularly, the coupling bearing 200 is located above the stepped portion 131, the coupling screw is located close to the coupling bearing 200, and since the outer circumference of the third adjusting screw 132 has a ring-shaped convex outer edge, the coupling bearing 200 is pressed when the adjusting screw is rotated.

More precisely, the third adjusting screw 132 is provided for adjusting the gap between the two coupling bearings 200, and when the third adjusting screw 132 rotates on the stepped portion 131, it moves toward the upper side, and the edge thereof presses the coupling bearing 200, thereby pushing the coupling bearing 200 toward the other coupling bearing 200, thereby achieving the function of adjusting the distance between the two coupling bearings 200.

In order to ensure stability and reliability during rotation, a high installation accuracy is required in the actual driving wheel, and once the installation accuracy is too low, the abrasion during steering is caused, that is, the installation accuracy and the machining error affect the service life to some extent, and through the structure, the distance between the two connecting bearings 200 can be adjusted, the installation of the lower connecting bearing 200 can be facilitated, the installation and adjustment accuracy is further improved, so that the operation is simpler and more reliable when the machining error is eliminated.

As shown in fig. 1, in the above embodiment, a limiting seat 410 for limiting the steering angle of the steering gear ring 400 is connected to the upper end surface of the steering gear ring.

The limiting seat 410 can limit the maximum rotation travel of the steering gear ring 400, that is, avoid the over-travel of the rotation angle of the steering gear 141, so that the steering gear ring 400 rotates within a set angle range.

As shown in fig. 1 and 2, in the above embodiment, a gear shaft 540 is vertically disposed in the gear box 500, and the gear shaft 540 is connected to the driving motor 110 in a linkage manner.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A drive wheel, comprising:

the driving wheel mounting seat is fixedly provided with a driving motor;

a driven gear provided on the wheel shaft, and meshed with the driving gear;

a first adjustment module provided on the wheel shaft, and pressing the driven gear by moving axially on the wheel shaft, thereby adjusting a gap between the driven gear and the driving gear;

the wheel shaft is also provided with a first bearing and a second bearing, two ends of the first bearing are in abutting connection with the driven gear and the first adjusting module, and the second bearing is positioned at the inner end of the wheel shaft;

the driving wheel mounting seat comprises a mounting end face and a columnar structure integrally connected with the mounting end face, the driving motor is fixed on the mounting end face, the number of the connecting bearings is two, and the connecting bearings are respectively positioned at the upper end and the lower end of the columnar structure;

the gear box is internally provided with an inner port and an outer port corresponding to the inner port in parallel, the outer ring of the first bearing is arranged in the outer port, the inner ring of the first bearing is arranged on the outer end of the wheel shaft, the outer ring of the second bearing is arranged in the inner port, the inner ring of the second bearing is arranged on the outer ring of the wheel shaft, the inner port is provided with a second adjusting module capable of moving along the axial direction of the wheel shaft, the second adjusting module is in abutting connection with the second bearing, and the second adjusting module extrudes the outer ring of the second bearing through axial movement so as to adjust the gap of the second bearing.

2. The drive wheel of claim 1, wherein: the mounting end face is provided with a steering motor, a steering gear is arranged on the shaft of the steering motor, and the steering gear is meshed with the steering gear ring, so that the bearing seat is driven to steer through the steering gear ring.

3. The drive wheel of claim 1, wherein: the first adjusting module is a first adjusting screw ring with external threads, the external port is provided with internal threads, and the first adjusting screw ring is in threaded connection with the external port and axially moves on the wheel shaft through threads.

4. The drive wheel of claim 1, wherein: the second adjusting module is a second adjusting screw ring with external threads, the inner port is provided with internal threads, and the second adjusting screw ring is connected in the inner port in a threaded manner and moves along the axial direction of the wheel shaft through threads.

5. The drive wheel of claim 1, wherein: the lower end of the columnar structure is provided with a step part, the step part is connected with a third adjusting screw ring capable of axially moving in a threaded manner, and the outer edge of the third adjusting screw ring is abutted against the connecting bearing positioned on the lower side of the columnar structure and can push the connecting bearing to move.

6. The drive wheel of claim 5, wherein: the upper end face of the steering gear ring is connected with a limiting seat for limiting the steering angle of the steering gear ring.

7. The drive wheel of claim 1, wherein: the gear box is internally and vertically provided with a gear shaft, and the gear shaft is in linkage connection with the driving motor.