JPH0744302U - Crusher rotor structure - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is designed to greatly reduce the wear of the rotor of the crusher due to the crushed material, instead of the hardfacing part. [Structure] A wear resistant ring 2 is fixed to the outer periphery of a rotor 1 of a crusher rotor by welding 3 or press fitting or other method. The cross-sectional shape of the ring 2 may be round, square, oval or the like. The wear resistant ring 2 can be made of a hard material such as S45C or high tensile steel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crusher rotor structure in which the structure of a rotor equipped with an impactor for crushing dust is improved.

[0002]

[Prior art]

 Generally, a crusher uses a shell liner that fixes the crushed materials such as various types of waste that are put in from the upper opening of a cylindrical shell inside the shell, a breaker liner provided outside the rotating shaft, and a grinder to crush the material. Is configured.

In such a crushing machine, the shell liner has a thick and thin meat alternately fixed to the inner side of the shell to form irregularities, and a breaker liner and a grinder attached to the rotary shaft and the shell liner The crushed material thrown into the crushing chamber is thrown by the breaker liner that rotates with the rotating shaft to collide with the shell liner, and is also crushed and crushed directly in the gap between the grinder and the breaker liner and the shell liner. It has become.

Since the breaker liner and the shell liner are particularly worn out, a device for replacing the breaker liner or the shell liner or for adjusting the clearance is disclosed in, for example, JP-A-59-98744, JP-A-60-90050, and JP-A-60-90050. 61-15747 or Japanese Patent Laid-Open No. 2-86851.

[0005]

[Problems to be solved by the device]

 In the crusher, not only the breaker liner and shell liner described above but also the breaker liner, the breaker for attaching the grinder, and the rotor themselves are worn at their outer peripheral parts by friction with the object to be crushed. For this reason, in the past, hard padding has generally been applied to the outer circumference of the rotor or the breaker protrusion.

However, even if such a hardfacing is applied, the hardfacing still wears due to the crushed material. When worn it must be hardened again.

However, since the hardfacing portion is built up with the welding rod little by little to form the protective layer, the total thickness cannot be increased, and therefore the hardened portion quickly wears and thus has a short life.

Further, since the hardfacing part needs to be built up on the entire peripheral surface of the hardfacing part, special skill is required, the working time becomes long (many man-hours), and the crusher must be stopped during the overlaying work. Must be stopped, resulting in longer downtime.

Further, the rotor portion around the hardfacing part wears quickly, and the quality of the hardfacing part is greatly affected by the skill of the builder, and if the construction quality is poor, the buildup part will crack. , Peeling is likely to occur.

In consideration of the problems associated with the conventional crusher rotor structure described above, the present invention provides a wear-resistant ring on the outer circumference of the rotor without providing a conventional hardfacing part. It is an object of the present invention to provide a rotor structure with excellent maintainability, in which the wear that the rotor receives from crushed objects is greatly reduced, the life is long, and therefore the repair time is short and the repair interval is long.

[0011]

[Means for Solving the Problems]

 As a means for solving the above problems, the present invention employs a crusher rotor structure in which a wear resistant ring is attached to the outer periphery of the crusher rotor.

Alternatively, a crusher rotor structure may be adopted in which a ring-shaped plate is attached to the outer circumference of the crusher rotor, and a wear resistant ring is further attached to the outside thereof.

[0013]

[Action]

 When the crusher rotor with the above structure is installed in a crusher to crush crushed objects such as dust, the rotor wears due to friction received from the crushed objects. With the ring attached, rotor wear is greatly reduced.

The wear-resistant ring has a thickness adjusted by a round bar, a square bar or the like, and the wear can be optimally dealt with by appropriately selecting the material.

[0015]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view of a rotor 1 of a crusher given as an example. (A) is a plan view and (b) is a sectional view. As shown in FIG. 4, when the rotor 1 is assembled as a crusher, a rotating shaft 13 is inserted in the center of the rotor 1, a breaker 12 is set above the rotor 1, and the rotor 1 is mounted in a casing through a bearing. A drive device (not shown) is provided below the rotary shaft.

As shown in the figure, the rotor 11 is formed by stacking three stages of rotor plates 11a at predetermined intervals, and a plurality of rotor plates 11a are provided on a predetermined radius on a predetermined radius thereof at a predetermined pitch. The striker 15 is attached.

In the present embodiment, as shown in the figure, a round bar as a wear-resistant ring 2 is provided by welding 3 on the outer periphery of the rotor plate 1a, instead of the hardfacing, as a wear-resistant ring, as opposed to the rotor. . This round bar may be, for example, S45C. Alternatively, a high-strength steel having a higher hardness or a surface-hardened steel having a higher hardness may be used.

Although a round bar is shown as the cross-sectional shape, any shape such as an ellipse or a polygon may be used. The round bar may be attached mainly to the outer periphery of the rotor plate 1a, and a hard overlay portion may be provided on the part that is partially worn.

FIG. 2 similarly shows an example in which the wear resistant ring 6 is fixed to the outer circumference of the rotor portion 5 of the breaker 4. As shown in FIG. 4, this breaker 4 is provided above the rotor 1 of FIG. 1 when it is attached to the crusher. Therefore, since the outer circumference of the rotor portion 5 of the breaker 4 is still highly worn, the wear can be prevented by attaching the wear resistant ring.

FIG. 3 shows an example in which a ring-shaped plate 7 is first fixed to the outer periphery of the rotor 1 of FIG. 1, and a round bar is welded and fixed to the outer side of the plate 7 as a wear resistant ring 2. The plate 7 may have any width as long as the gap between the plate 7 and the casing does not become extremely narrow.

FIG. 4 is a main cross-sectional view of an example in which the rotor 1 and the breaker 4 of FIGS. 1 and 2 are assembled in a crusher.

[0023]

【effect】

 As described in detail above, since the rotor for the crusher according to the present invention is provided with the wear resistant ring fixedly attached to the outer periphery thereof, when the rotor is rotated to crush crushed objects such as dust, The wear received from the crushed material is greatly reduced and the life of the rotor is extended. Therefore, various advantages can be obtained such that the repair interval of the rotor can be extended and the repair required time can be shortened.

[Brief description of drawings]

1 is a schematic view of a crusher rotor rotor

[Fig. 2] Schematic diagram of crusher rotor breaker

FIG. 3 is a schematic view of another embodiment of the crusher rotor rotor.

[Fig. 4] Main sectional view of crusher assembly

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rotor 2 wear resistant ring 3 welding 4 breaker 5 rotor part 6 wear resistant ring 7 plate 11 rotor 11a rotor plate 12 breaker 13 rotating shaft 14 vertical shaft 15 striker

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Mitsuo Oba 2-35 Jimmucho, Yao-shi Kubota Hisashi, Takara-ji factory

Claims (2)

[Scope of utility model registration request] 1. A crusher rotor structure in which a wear resistant ring is attached to the outer periphery of the crusher rotor. 2. A crusher rotor structure characterized in that a ring-shaped plate is attached to the outer periphery of the crusher rotor, and a wear resistant ring is further attached to the outside thereof.