CN212473088U - Inner gear ring structure of forklift driving wheel - Google Patents

Abstract

The utility model relates to a fork truck drive wheel ring gear structure, include: the wheel is provided with a convex part on one side of the position of the axis center line along the vertical direction, and the inner gear ring is arranged on the other side of the convex part relative to the center of the wheel; the utility model provides a because the wheel is final output plus frequent positive and negative commentaries on classics, the wheel limit moment of torsion is very big, causes the cracked technical problem of connected mode of wheel and ring gear.

Description

Inner gear ring structure of forklift driving wheel

Technical Field

The utility model relates to a fork truck drive wheel technical field especially relates to a fork truck drive wheel ring gear structure.

Background

The driving wheel assembly of the electric forklift comprises a driving frame and a driving motor arranged in the driving frame, wherein a driving gear is arranged on an output shaft of the driving motor, a transmission shaft is arranged in the driving frame, a first driven gear and a second driven gear are arranged on the transmission shaft, the driving gear is meshed with the first driven gear, a circle of inner gear barrel is arranged on the periphery of the driving motor and locked on the driving motor through a bearing, an inner gear ring is arranged on the inner wall of the inner gear barrel, the second driven gear is meshed with the inner gear ring, and a rubber covered wheel is sleeved outside the inner gear barrel. The existing electric forklift driving wheel assembly has the following defects: when the rubber covered wheel is replaced after being used for a period of time, the inner tooth cylinder is locked on the driving motor by the two bearings, so that the replacement is very troublesome.

Patent document CN2014207886593 discloses a driving wheel assembly of an electric forklift, which comprises a driving frame and a driving motor arranged in the driving frame, wherein an output shaft of the driving motor is provided with a driving gear, a transmission shaft is arranged in the driving frame, the transmission shaft is provided with a first driven gear and a second driven gear, and the driving gear is meshed with the first driven gear; a circle of inner gear barrel is arranged at the periphery of the driving motor, the inner gear barrel is supported on the driving motor through a bearing, an inner gear ring is arranged on the inner wall of the inner gear barrel, and a second driven gear is meshed with the inner gear ring; the inner gear barrel is sleeved with a framework barrel, the rear end of the framework barrel is provided with a circle of inward-folded positioning ring, and the positioning ring is positioned behind the inner gear barrel and is close to the rear end face of the inner gear barrel; the locking screw is locked into the inner tooth cylinder from the positioning ring; the skeleton cylinder is sleeved with a rubber coating wheel.

However, in the in-service use process, utility model people discover because the wheel is final output plus frequent just reversal, and the wheel limit moment of torsion is very big, causes the cracked problem of connected mode of wheel and ring gear.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, lie in one side of wheel along the axle central line position of vertical direction through setting up the bellying, and then utilize the bellying to accomplish the side by side installation of ring gear and bearing, thereby do benefit to the quick dismantlement and the installation of part, it is spacing to utilize the bellying simultaneously, make the ring gear directly install fast on the wheel, thereby solved because the wheel is final output plus frequent positive and negative rotation, the wheel limit moment of torsion is very big, cause the cracked technical problem of connected mode of wheel and ring gear.

Aiming at the technical problems, the technical scheme is as follows: a forklift drive wheel ring gear structure comprises: the wheel is provided with a convex part on one side along the axial center line in the vertical direction, and the inner gear ring is arranged on the other side of the convex part relative to the center of the wheel.

Preferably, the inner gear ring is arranged in the inner end part of the inner gear ring, and the outer circumferential surface of the inner gear ring is abutted against the inner wall of the wheel.

Preferably, the wheel comprises a wheel core and a wheel rim;

the inner ring of the wheel core is sequentially provided with a first limiting groove, a second limiting groove and a third limiting groove along the thickness direction of the inner ring;

the first limiting groove is used for mounting the inner gear ring, and the protruding part is located between the first limiting groove and the second limiting groove.

Preferably, the first limiting groove and the side wall adjacent to the boss are arranged along the same horizontal plane;

the second limiting groove and the side wall adjacent to the protruding portion are arranged along the same horizontal plane.

Preferably, the protruding portion is provided with a plurality of groups of first connecting pieces for connecting the inner gear ring with the protruding portion, and the plurality of groups of first connecting pieces are circumferentially and uniformly distributed on one side of the protruding portion.

Preferably, the first connecting piece is a screw and positioning pin combined connection.

Preferably, the second limiting groove is located at the middle position of the wheel.

Preferably, the inner gear ring is of a stepped structure and comprises a connecting part and a transmission part which are integrally formed, and a gear ring is arranged on the inner wall of the connecting part and the inner wall of the transmission part.

Preferably, the connecting portion abuts against a side wall of the protruding portion.

Preferably, the rim has an arc-shaped structure.

The utility model has the advantages that:

(1) in the utility model, the bulge part is arranged at one side of the position of the axial center line of the wheel along the vertical direction, and the bulge part is utilized to complete the parallel installation of the inner gear ring and the bearing, thereby being beneficial to the rapid disassembly and installation of parts, and simultaneously, the limit of the bulge part is utilized to ensure that the inner gear ring can be directly and rapidly installed on the wheel;

(2) the utility model discloses in be screw and locating pin through the fastening connection mode that sets up wheel and ring gear, because the wheel is final output plus frequent just reversal, the wheel limit moment of torsion is very big, and this kind of combination can reduce the shearing force that the wheel gave the screw.

To sum up, this equipment has simple structure, simple to operate's advantage, is particularly useful for fork truck drive wheel technical field.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only 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 schematic structural view of a stable forming device for a power distribution cabinet.

Figure 2 is a schematic cross-sectional view of a wheel.

Fig. 3 is a schematic cross-sectional view of the wheel core.

Fig. 4 is a schematic structural view of the wheel core.

Fig. 5 is a cross-sectional view of the ring gear.

Fig. 6 is a structural schematic diagram of the ring gear.

Fig. 7 is a schematic view of the installation state of the inner gear ring and the wheel.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings.

Example one

As shown in fig. 1, a ring gear structure for a driving wheel of a forklift includes: the wheel comprises a wheel 1 and an inner gear ring 2 clamped in the wheel 1, wherein a protruding portion 3 is arranged on one side of the wheel 1 along the axial center line in the vertical direction, and the inner gear ring 2 is arranged on the other side of the protruding portion 3 relative to the center of the wheel 1.

Conventionally, a bearing is arranged on an inner gear ring firstly, then the inner gear ring is arranged on a wheel, and then only the wheel can be disassembled and replaced, however, the bearing and a secondary driven inner gear ring need to be replaced only by disassembling a brake, a left side cover of a reduction box and a motor; and the use of bearings in pairs increases mechanical friction.

In this embodiment, through setting up one side that bellying 3 is located wheel 1 along the axle central line position of vertical direction, and then utilize bellying 3 to accomplish the parallel installation of ring gear 2 and bearing to do benefit to the quick dismantlement and the installation of part, utilize the spacing of bellying 3 simultaneously, make ring gear 2 can directly install on the wheel fast.

Further, as shown in fig. 7, the ring gear 2 is embedded in the inner end portion of the ring gear 2, and the outer circumferential surface of the ring gear 2 is abutted against the inner wall of the wheel 1.

Further, as shown in fig. 2 and 3, the wheel 1 includes a wheel core 11 and a wheel rim 12;

the inner ring of the wheel core 11 is provided with a first limit groove 111, a second limit groove 112 and a third limit groove 113 in sequence along the thickness direction;

the first limiting groove 111 is used for mounting the ring gear 2, and the boss 3 is located between the first limiting groove 111 and the second limiting groove 112.

Further, as shown in fig. 7, the side walls of the first limiting groove 111 adjacent to the protruding portion 3 are arranged along the same horizontal plane;

the second limiting groove 112 and the adjacent side wall of the boss 3 are arranged along the same horizontal plane.

In the present embodiment, the first limiting groove 111 is provided for quickly mounting the ring gear 2.

Further, as shown in fig. 6, a plurality of groups of first connecting members 4 for connecting the ring gear 2 with the boss 3 are arranged on the boss 3, and the plurality of groups of first connecting members 4 are circumferentially and uniformly distributed on one side of the boss 3.

Further, as shown in fig. 3, the second limit groove 112 is located at a middle position of the wheel 1.

It should be noted that the second limiting groove 112 is used for mounting a bearing.

Further, as shown in fig. 5 and 6, the ring gear 2 has a stepped structure and includes a connecting portion 21 and a transmission portion 22 that are integrally formed, and a ring gear 23 is disposed on inner walls of the connecting portion 21 and the transmission portion 22.

It should be noted that the driven member drives the gear ring 23 to rotate, and then the gear ring 23 drives the wheel to rotate, and it should be noted that the driven member is installed on the frame and driven to rotate synchronously by a gear on the motor, and the driven member drives the gear ring 23 to rotate when rotating.

It should be noted that the structure of the ring gear 23 is matched with the external shape of the secondary driving gear, and the width dimension of the ring gear 23 is not less than the width dimension of the transmission part 22.

Further, as shown in fig. 7, the connecting portion 21 abuts against the side wall of the boss portion 3.

It is worth mentioning here that the connection portion 21 is arranged to abut against the side wall of the protruding portion 3, so that the inner gear ring 2 and the wheel are tightly combined, and the mounting accuracy is high.

Further, as shown in fig. 2, the rim 12 is provided in a circular arc structure.

In the embodiment, the rim 12 is of an arc-shaped structure, so that the friction force of starting and walking of the vehicle and pivot steering is small and stable, and the mechanical loss is reduced.

Example two

As shown in fig. 6, in which the same or corresponding components as in the first embodiment are denoted by the same reference numerals as in the first embodiment, only the points of difference from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that:

further, as shown in fig. 6, the first connecting member 4 is a screw and dowel combined connection.

In the embodiment, the fastening connection mode of the wheel 1 and the inner gear ring 2 is a screw and a positioning pin, and the wheel has large wheel-side torque due to frequent positive and negative rotation of the final output end, so that the shearing force of the wheel to the screw can be reduced.

In the description of the present invention, it is to be understood that the terms "front and back", "left and right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or parts referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Of course, in this disclosure, those skilled in the art will understand that the terms "a" and "an" should be interpreted as "at least one" or "one or more," i.e., in one embodiment, a number of an element may be one, and in another embodiment, a number of the element may be plural, and the terms "a" and "an" should not be interpreted as limiting the number.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art in the technical suggestion of the present invention should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a fork truck drive wheel ring gear structure which characterized in that includes: the wheel (1) and the inner gear ring (2) clamped in the wheel (1), a protruding portion (3) is arranged on one side of the wheel (1) along the axial center line in the vertical direction, and the inner gear ring (2) is arranged on the other side of the protruding portion (3) relative to the center of the wheel (1).

2. The ring gear structure of the driving wheel of the forklift as recited in claim 1, characterized in that the ring gear (2) is built in the inner end of the ring gear (2) and the outer circumferential surface of the ring gear (2) is abutted against the inner wall of the wheel (1).

3. The forklift drive wheel ring gear structure according to claim 1, wherein the wheel (1) comprises a wheel core (11) and a rim (12);

the inner ring of the wheel core (11) is sequentially provided with a first limiting groove (111), a second limiting groove (112) and a third limiting groove (113) along the thickness direction;

the first limiting groove (111) is used for mounting the inner gear ring (2), and the protruding part (3) is located between the first limiting groove (111) and the second limiting groove (112).

4. The ring gear structure of a driving wheel of a forklift as claimed in claim 3, wherein the side walls of the first limiting groove (111) adjacent to the boss (3) are arranged along the same horizontal plane;

the second limiting groove (112) and the side wall adjacent to the boss (3) are arranged along the same horizontal plane.

5. The ring gear structure of a driving wheel of a forklift as claimed in claim 1, wherein the boss (3) is provided with a plurality of groups of first connecting members (4) for connecting the ring gear (2) with the boss (3), and the plurality of groups of first connecting members (4) are circumferentially and uniformly distributed on one side of the boss (3).

6. The ring gear structure of the driving wheel of the forklift as recited in claim 5, wherein the first connecting member (4) is a screw and positioning pin combination.

7. The ring gear structure of the driving wheel of the forklift as recited in claim 3, wherein the second limit groove (112) is located at a middle position of the wheel (1).

8. The inner gear ring structure of a driving wheel of a forklift as claimed in claim 1, wherein the inner gear ring (2) is of a stepped structure and comprises a connecting part (21) and a transmission part (22) which are integrally formed, and a gear ring (23) is arranged on the inner walls of the connecting part (21) and the transmission part (22).

9. The ring gear structure for the driving wheel of the forklift as recited in claim 8, wherein the connecting portion (21) abuts against the side wall of the boss portion (3).

10. The inner gear ring structure of a driving wheel of a forklift as claimed in claim 3, wherein the wheel rim (12) is of a circular arc structure.

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