KR200462798Y1 - Speed reduction system of worm wheel for Loading box cover - Google Patents

Abstract

The present invention relates to a worm wheel for a reducer of the cargo box cover, and to provide a worm wheel for a reducer that can be expected to reduce productivity costs.

That is, in the present invention, the shaft 3 is axially coupled to the wheel shaft 4 having the gear 3 integrally formed thereon, and includes a space 2 for maintaining a gap between the gear 3 and the case (not shown). In the reducer worm wheel (1) of the storage box cover made of special brass (ALBC3), the space (2) to maintain the gap between the worm wheel (1) and the gear (3) and the case directly rubbed with the worm (6) Part) and the space (2) is made of ferrous metal with excellent wear resistance.

Worm wheel, Axle, Space, Wheel axle, Worm

Description

Speed reduction system of worm wheel for Loading box cover}

The present invention relates to a worm wheel for a reducer of the loading box cover, and more particularly, to provide a worm wheel for a reducer that can expect productivity improvement material cost reduction.

In the case of a cover installed in a dumper such as a dumper truck, a sufficiently reduced power is transmitted through a reducer connected to a motor, and the output shaft and the cover shaft of the reducer are connected to each other by a coupling so that the cover can be rotated and driven.

As shown in FIGS. 1 and 2, the decelerator 10 which is generally used has a planetary gear assembly 12 connected to the drive shaft 11a of the motor 11 and a planetary gear assembly as shown in FIGS. The worm wheel 14 is coupled to the worm 13 formed on the output shaft 12a of the 12, and the wheel shaft 15 to which the worm wheel 14 is coupled, and several gears formed on the output shaft 16 and the idle shaft 17. It consists of a reduction gear group 18 consisting of.

In particular, the worm 13 and the worm wheel 14 are an important gear member that transmits power in a direction perpendicular to the motor 11, and unlike the gears of the reducer group 18, which are composed of other spur gears, there is a strong torsion in the worm 13. It is a member that transmits resistance, and it is processed with special metal, that is, special brass (ALBC3), which has excellent workability and can withstand friction.

Looking at the formation of the worm wheel 14, the space 14a for maintaining a gap between the gear and the reducer case is integrally formed on both sides of the wheel, and the shaft hole 14b including a key groove (not shown) is formed at the center thereof. The wheel shaft 11 and the key is composed of a combination.

However, the configuration of the worm wheel 14 has many disadvantages of the loss of special brass, which is an expensive raw material, and also has a problem of high processing cost.

Therefore, the present inventors have devised the present invention to solve the above-mentioned conventional problems, and the present invention has completed the present invention with a technical problem in providing a worm wheel for a reducer which can expect productivity improvement material cost reduction.

In the present invention as a means for solving the problem, in the configuration of the worm wheel is divided into a portion that directly maintains the gap between the worm and the gear and the case, the space is made of ferrous metal.

According to the worm wheel for the box cover reducer provided by the present invention, since the space is made of inexpensive ferrous metal, the raw material cost and manufacturing cost can be greatly reduced.

In addition, the machining time can be significantly shortened, thereby improving productivity.

The present invention is a key shaft coupled to the wheel shaft integrally formed in the gear, the worm wheel for the reducer worm wheel of the storage box made of special brass (ALBC3) including a space for maintaining the gap between the gear and the case, the worm wheel is directly with the worm The space part which maintains the space | interval between the friction part and the gear-shaft integrated with a wheel shaft, and a case part are comprised, The said space is manufactured from the ferrous metal which is excellent in abrasion resistance.

Hereinafter, the configuration of the present invention based on the accompanying drawings.

Figure 3 is an exploded perspective view of the worm wheel provided in the present invention, Figure 4 shows an assembled cross-sectional view of FIG.

As shown in the present invention, the worm wheel 1 for the reducer of the loading box cover is coupled to the wheel shaft 4 having the gear 3 integrally formed on one side thereof as a key 5, and the worm 6 is used. Part of the space 2 that maintains the gap between the worm wheel 1 and the gear 3 and the case (not shown) which are directly rubbed, and the space 2 is relatively inexpensive and wear-resistant It is made of this excellent ferrous metal.

In the case of the worm wheel (1) made of a special brass (ALBC3) as described above can be manufactured using a round bar or flat plate, while only the shaft hole (1a) including the gear teeth and the center key groove of the outer peripheral product while minimizing processing The production cost can be reduced because the material loss can be minimized during processing.

In addition, in the case of the space (2), only the shaft hole (2a) including a key groove therein can be produced at low cost using a dedicated machine.

Therefore, the present invention can be manufactured at a lower cost than conventional worm wheels, while maintaining performance as it is.

1 is a perspective view of the reducer of the general loading box cover

2 is a perspective view showing a gear coupling state of FIG.

Figure 3 is an exploded perspective view of the worm wheel provided in the present invention

4 is a cross-sectional view of the assembled state of FIG.

Explanation of symbols used in main part of drawing

1: Worm wheel 1a, 2a: Shaft hole

2: space 3: gear

4: wheel axle 5: height

6: Worm

Claims (1)

In a known speed reduction gear device in which a worm wheel (1) made of brass engaged with a worm (6) is engaged with a key (5) by a wheel (4) in which a gear (3) is integrally formed, Reducer of the lid of the storage box, characterized in that spaces 2 made of ferrous metal are formed in a separated state from the worm wheel 1 on both sides of the worm wheel 1 so that they are simultaneously coupled to the key 5 of the wheel shaft 4. Worm wheel.

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