CN219277143U - Wheel side speed reduction driving axle of off-road forklift - Google Patents

Abstract

The utility model discloses a wheel edge speed reduction driving axle of an off-road forklift, which comprises a bridge body, and half shafts, a brake assembly, a brake drum, a connecting disc, a wheel edge shell and a speed reduction mechanism which are symmetrically arranged on two sides of the bridge body, wherein the half shafts are arranged in the bridge body, one end of the half shafts positioned on the inner side of the bridge body is in a suspension state, one end of the half shafts positioned on the outer side of the bridge body is connected with the speed reduction mechanism, the brake assembly, the brake drum, the connecting disc and the wheel edge shell are sequentially arranged on the outer side of the bridge body from inside to outside, the brake drum is connected with the wheel edge shell through the connecting disc, and the speed reduction mechanism is arranged in the wheel edge shell. This drive axle reduces the torsion of semi-axis transmission through reducing mechanism, prevents that torsion overload from causing the semi-axis fracture, differential lock damage and clutch early wear to the life of extension gearbox and axle reduces fork truck's operation fault rate, guarantees fork truck's normal work and security.

Description

Wheel side speed reduction driving axle of off-road forklift

Technical Field

The utility model relates to the technical field of axles, in particular to a wheel-side speed reduction driving axle of an off-road forklift.

Background

In the existing off-road forklift industry, an axle is an important part of a bearing system in the forklift running process, a half axle and a gear in the axle are important power transmission system parts for forklift running and steering, as disclosed in a patent CN217198337U and a forklift drive axle structure disclosed in a patent CN217396115U, the existing axle structure generally comprises an axle body, a half axle, a hub, a brake and other structures, and as the axle is not protected by a wheel edge reduction mechanism, if the transmitted torque is overloaded, the half axle is easily broken and a differential lock is easily seriously damaged, and meanwhile, a clutch plate in a gearbox torque converter is easily worn seriously early due to the long-time overload of the torque, so that the service life of the gearbox is reduced, and the normal work and the safety of the whole forklift are seriously influenced; in the industry, the driving axle of the two-drive off-road forklift is not seen to adopt a wheel-side speed reducing mechanism in the market, so that the technology belongs to the market blank.

Disclosure of Invention

This patent is for solving above-mentioned technical problem, and extension gearbox, axle and fork truck whole car's life has proposed a cross-country fork truck's wheel limit speed reduction drive axle, including the bridge body, and the symmetry sets up semi-axis, stopper assembly, brake drum, connection pad, wheel limit casing, the reduction gears of bridge body both sides, the semi-axis sets up inside the bridge body, and is the suspension state in the inboard one end of the bridge body, is located the one end and the reduction gears in the bridge body outside and is connected, stopper assembly, brake drum, connection pad and wheel limit casing set gradually outside the bridge body from interior to exterior, brake drum and wheel limit casing pass through the connection pad and connect, reduction gears sets up inside the wheel limit casing.

Further, the speed reducing mechanism comprises a planet carrier, a planet wheel assembly, a gear ring and a sun wheel, wherein the sun wheel is arranged at the end part of the half shaft and penetrates through the center of the planet carrier to be in transmission connection with the planet wheel assembly, and the planet wheel assembly is arranged on the outer ring of the planet carrier and is in transmission connection with the gear ring through a fluted disc.

Further, the planet wheel assembly comprises a plurality of auxiliary rotating parts, planet wheels and planet shafts, wherein the planet wheels are uniformly distributed on the end face of the planet carrier through the planet shafts, and the auxiliary rotating parts are arranged between the planet wheels and the planet shafts.

Further, the fluted disc comprises a first fluted disc and a second fluted disc which are coaxially arranged, the first fluted disc is meshed with the gear ring, and the second fluted disc is meshed with the plurality of planetary gears.

Further, the outer diameter of the first fluted disc is larger than the outer diameter of the second fluted disc.

Further, the gear ring and the fluted disc are of an integrated structure.

Furthermore, a gland is further arranged on the outer side of the wheel side shell.

The beneficial effects of the utility model are as follows:

this drive axle reduces the torsion of semi-axis transmission through reducing mechanism, prevents that torsion overload from causing the semi-axis fracture, differential lock damage and clutch early wear to the life of extension gearbox and axle reduces fork truck's operation fault rate, guarantees fork truck's normal work and security.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the structure of the reduction mechanism of the present utility model;

FIG. 3 is a schematic view of another gear ring structure according to the present utility model;

FIG. 4 is a schematic diagram of an end face structure of a planet carrier and a planet in the present utility model;

fig. 5 is a schematic diagram of another end-face structure of the planet carrier and the planet in the present utility model.

Reference numerals:

1-bridge; 2-half shafts; 3-brake assembly; 4-a brake drum; 5-connecting discs; 6-wheel side shell; 7-capping; 8-a planet carrier; 9-a gear ring; 10-sun gear; 11-fluted disc; 111-a first toothed disc; 112-a second toothed disc; 12-auxiliary rotating parts; 13-planet wheels; 14-planetary shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise specifically indicated and defined. For example, the connection can be fixed connection, detachable connection or integral connection; can be mechanically or electrically connected; can be directly connected, can be connected through an intermediary medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the wheel side speed reduction driving axle of the off-road forklift of the embodiment comprises an axle body 1, and half shafts 2, brake assemblies 3, brake drums 4, connecting discs 5, wheel side shells 6, a speed reduction mechanism and a gland 7 which are symmetrically arranged on two sides of the axle body 1; the half shaft 2 is arranged in the bridge body 1, one end of the half shaft positioned at the inner side of the bridge body 1 is in a suspension state, and one end of the half shaft positioned at the outer side of the bridge body 1 is connected with the speed reducing mechanism; the brake assembly 3, the brake drum 4, the connecting disc 5 and the wheel rim shell 6 are sequentially arranged on the outer side of the bridge body 1 from inside to outside, the brake drum 4 and the wheel rim shell 6 are connected through the connecting disc 5, the speed reducing mechanism is arranged inside the wheel rim shell 6, and the gland 7 is fixed on the outer side of the wheel rim shell 6 through bolts. The structure and the connection manner of the brake assembly 3, the brake drum 4 and the connection disc 5 are all conventional technical means in the art, and are not described herein.

As shown in fig. 2, the speed reducing mechanism comprises a planet carrier 8, a planet wheel assembly, a gear ring 9 and a sun wheel 10, wherein the sun wheel 10 is arranged at the end part of the half shaft 2 and penetrates through the center of the planet carrier 8 to be in transmission connection with the planet wheel assembly, the planet wheel assembly is arranged on the outer ring of the planet carrier 8, and the planet wheel assembly is in transmission connection with the gear ring 9 through a fluted disc 11.

The planetary wheel assembly comprises an auxiliary rotating member 12, planetary wheels 13 and planetary shafts 14, wherein the planetary wheels 13 are uniformly distributed on the end face of the planetary frame 8 through the planetary shafts 14, and the auxiliary rotating member 12 is arranged between the planetary wheels 13 and the planetary shafts 14. The auxiliary rotating member 12 may adopt a structure such as a sleeve, a needle roller bearing, etc., so that abrasion between the planetary gear 13 and the planetary shaft 14 can be reduced, and rotation efficiency can be improved.

The toothed disc 11 comprises a first toothed disc 111 and a second toothed disc 112 coaxially arranged, the first toothed disc 111 is meshed with the toothed ring 9, the second toothed disc 112 is meshed with the plurality of planetary gears 13, and the outer diameter of the first toothed disc 111 is larger than the outer diameter of the second toothed disc 112.

In another embodiment, as shown in fig. 3, the gear ring 9 and the toothed disc 11 may be made into an integral structure, and the toothed disc 11 is located at the outer end surface of the gear ring 9, so as to improve the overall structural strength of the gear ring 9.

The reduction ratio of the gear ring 9 to the sun gear 10 is 3.0-6.0, so that the use requirement of a 3-5 ton forklift can be met, the gear ring can be matched with off-road forklifts of various types, the selectivity and the efficiency of construction operations under different working conditions of various off-road forklifts are ensured, the working efficiency and the operation safety of users are greatly improved, and the failure rate in the operation is reduced.

In different embodiments, the number of planet wheels 13 may be different, as shown in fig. 4, the planet wheels 13 may be arranged in three, arranged in the form of an equilateral triangle around the sun wheel 10; as shown in fig. 5, the planet wheels 13 may also be provided in four, square form, arranged around the sun wheel 10. Of course, the number and arrangement of the planetary gears 13 are not limited to the above, and may be appropriately set according to the actual situation.

When the forklift works, the power of the engine is transmitted to the suspension end of the half shaft 2 through the reduction gearbox and the main differential mechanism, the other end of the half shaft 2 drives the planet carrier 8, the planet wheel assembly and the sun wheel 10 to rotate, and then the effect of speed reduction is achieved, so that the torque transmitted by the half shaft 2 is reduced, the breakage of the half shaft 2, the damage of the differential lock and the early abrasion of the clutch tabletting caused by the overload of the torque are prevented, the service lives of the gearbox and the axle are prolonged, the operation failure rate of the forklift is reduced, and the normal work and the safety of the forklift are guaranteed.

The technology of the patent is applied to the wheel edge speed reducing mechanism on the cross-country forklift for the first time, is the first creation of the industry, fills up the market blank, can effectively prolong the service lives of the gearbox, the driving axle and the forklift, and has good market application prospects.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model. In addition, the technical solutions between the embodiments may be combined with each other, but must be based on the implementation by those of ordinary skill in the art; when the combination of the technical solutions is contradictory or impossible to realize, it should be considered that the combination of the technical solutions does not exist and is not within the scope of protection claimed by the present utility model.

Claims (7)

1. The utility model provides a wheel limit speed reduction drive axle of cross country fork truck which characterized in that: including the bridge body to and the symmetry sets up semi-axis, brake assembly, brake drum, connection pad, wheel limit casing, the reduction gears of bridge body both sides, the semi-axis sets up inside the bridge body, and be the suspension state in the inboard one end of the bridge body, be connected with the reduction gears in the one end in the bridge body outside, brake assembly, brake drum, connection pad and wheel limit casing set gradually outside the bridge body from interior to exterior, brake drum and wheel limit casing pass through the connection pad and connect, the reduction gears sets up inside the wheel limit casing.

2. The off-road forklift hub reduction drive axle of claim 1, wherein: the speed reducing mechanism comprises a planet carrier, a planet wheel assembly, a gear ring and a sun wheel, wherein the sun wheel is arranged at the end part of the half shaft and penetrates through the center of the planet carrier to be in transmission connection with the planet wheel assembly, and the planet wheel assembly is arranged on the outer ring of the planet carrier and is in transmission connection with the gear ring through a fluted disc.

3. The off-road forklift hub reduction drive axle of claim 2, wherein: the planetary gear assembly comprises a plurality of auxiliary rotating parts, planetary gears and planetary shafts, wherein the planetary gears are uniformly distributed on the end face of the planetary carrier through the planetary shafts, and the auxiliary rotating parts are arranged between the planetary gears and the planetary shafts.

4. The off-road forklift hub reduction drive axle of claim 3, wherein: the fluted disc comprises a first fluted disc and a second fluted disc which are coaxially arranged, the first fluted disc is meshed with the gear ring, and the second fluted disc is meshed with the plurality of planetary gears.

5. The off-road forklift hub reduction drive axle of claim 4, wherein: the outer diameter of the first fluted disc is larger than that of the second fluted disc.

6. The off-road forklift hub reduction drive axle of claim 2, wherein: the gear ring and the fluted disc are of an integrated structure.

7. The off-road forklift hub reduction drive axle of claim 1, wherein: and a gland is further arranged on the outer side of the wheel side shell.

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