JPH0337716Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to the liner of the spider arm.
In particular, the present invention relates to a liner for a spider arm such as a gyratory crusher or a cone crusher which is incorporated into a stone crushing system.

``Prior Art'' Conventionally, this type of spider arm liner has typically been installed on the spider 6 of a gear escape rickshaw (hereinafter referred to as a crusher) as shown in FIG. something is known.

A crusher having such a spider 6 will be explained with reference to FIG. This crusher rotates a substantially conical mantle 3 eccentrically within a crushing chamber 2 formed in an upper body 1 having a generally inverted conical cylindrical shape, and an outlet gap 4 formed at the lower end of the crushing chamber 2.
The raw material ore supplied to the crushing chamber 2 is crushed under high pressure between the concave 5 fitted on the inner surface of the upper body 1 and the mantle 3 by changing the width of the mantle 3. The loaded main shaft 11 is supported by a spider bush 7 provided at the center of the spider 6, which has a plurality of spider arms 22 projecting inward from the upper end of the upper body 1 at its upper end.

In such a crusher, in order to protect the upper end of the main shaft 11 and the spider bush 7 from the raw material ore (arrow A) fed into the raw material supply port 8, the central part of the hollow cylindrical spider 6 is A spider cap 9 is fitted on the top of the spider arm 22, and an arm liner 10 is mounted on the upper half of the spider arm 22 in order to protect the spider arm 22 from wear caused by collisions with raw material ores.

``The problem that the invention attempts to solve'' However, such conventional arm liner 10
For example, as can be seen from FIGS. 6 and 7, it covers only the length l of the part along the spider arm 22 (FIG. 5), and extends left and right in a saddle shape in order to straddle this spider arm 22. It is composed of skirt parts 12, 12 (see FIG. 8) divided into two parts, and a back part 13 consisting of a connecting part of the skirt parts 12, 12. And the back 13
is raised to a certain height from the upper surface of the spider arm 22 via several reinforcing parts 14, 14, 14, .

On the other hand, depending on the charging method, the arrangement of the charging machine, etc., the raw material ore that is charged from above violently collides with, for example, the spider central support portion and the spider cap 9 fitted therein.

In particular, in the conventional gyrate relaxation
Since the spider cap 9 was not covered with a liner, it was exposed to the violently colliding raw material ore, and wear and damage occurred there due to long-term use.

In such a case, it is necessary to replace the spider cap 9 together with the spider 6, which is a large component, which requires a lot of time and is difficult to replace. Therefore, there was a need for a charging method or equipment arrangement that would prevent the input raw material ore from directly hitting the spider cap 9 and the support 37 at the center of the spider to which it is attached.

In addition, as the crusher becomes smaller, the spider cap 9 itself becomes lighter. For example, if the spider cap 9 is of the fitting type, the spider cap 9 will be damaged by the collision caused by the input of the raw material ore, which will cause the spider cap 9 to become lighter at the center of the spider 6. There was a risk that dust and stones would enter the main shaft 11 and the spider bush 7, making them unusable.

``Purpose of the invention'' Therefore, the main purpose of this invention is to provide a spider arm liner that protects not only the spider arm but also the central support part of the spider including the spider cap, thereby extending the life of the spider. That's true.

Also, regarding maintenance of the spider section,
It is an object of the present invention to provide a structure of a spider arm part in which maintenance can be completed by simply replacing the liner, which is a small and lightweight component.

Another object of the present invention is to provide a liner for a spider arm that prevents falling off from a fitting portion due to a collision of raw materials, for example, in the case of a fitting type spider cap.

``Means for Solving the Problems'' In order to achieve the above objective, the main means adopted by this invention is the spider arm of the rotary crusher, which is installed in the upper opening of the body forming the crushing chamber. In the liner of the spider arm that is attached along the spider arm, a center liner part that covers the entire spider central support part and at least a side outer peripheral part of the spider cap is integrally molded with the arm liner part that covers the upper half of the spider arm part. This is a point that has been made.

``Effect of the invention'' According to this invention, even if the raw material ore thrown in from above collides violently, not only the arm part of the spider but also the support part in the center of the spider including the spider cap are protected from the collision. This can extend the life of the spider.

Further, the repair and inspection of the spider portion can be completed by only repairing and inspecting the liner of the spider arm, which is a small component, and the repair and inspection work for the spider portion can be reduced.

Furthermore, since it is possible to prevent the built-in spider cap from falling off or shifting, it is possible to prevent dust, stones, etc. from entering the spider central support portion, and stable operation can be expected.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

"Embodiment" FIG. 1 is a partially sectional front view of a spider arm liner according to an embodiment of the invention, and FIG. 2 is a plan view of the spider arm liner in FIG. 1. 3 is a view taken in the direction of the arrows in FIG. 2, and FIG. 4 is an explanatory view showing how the liner of the spider arm shown in FIG. 1 is attached.

Note that the following example is only one specific example of this invention, and the technical scope of this invention is not limited by this example. Also, Figures 5 to 8
Elements common to the conventional crusher, spider, arm liner, etc. shown in the figures will be described using the same reference numerals.

In FIG. 1, the arm liner 10' includes a back portion 13' as an arm liner portion that extends along the longitudinal direction of the spider arm 22 (see FIG. 4) and is attached to the upper half of the spider arm 22;
A central liner portion 15 is integrally formed on one end side of this back portion 13'. The back part 13' is a part configured almost the same as the back part of a conventional arm liner (see arm liner 3 in FIG. 6), and the arm liner 10' is fixed to the spider arm 22 on this back part 13'. A hole 18 for a bolt is formed. In addition, the central liner portion 15
is a portion that extends from one end side of the back portion 13' toward the central support portion of the spider 6, that is, the spider cap 9 (see FIG. 4), and is encircled in the circumferential direction of the spider cap 9. That is, such a central liner portion 15 has a rising slope portion 16 for covering the spider cap 9 in its height direction, and as can be seen from FIGS. 2 and 3, the spider cap 9 is A cylindrical portion 17 for covering in the circumferential direction is integrally provided with the cylindrical portion 17 . In this case, the cylindrical portion 17 is provided, for example, in the shape of one side portion of a cylindrical body divided into two along the cylinder axis direction,
As shown in FIG.
It is formed so as to abut against the cylindrical portion 17'' of the spider cap 9 so as to surround the entire circumference of the spider cap 9.The back portion 13' and the center liner portion 15 are provided with a cylindrical portion 17'' as shown in FIGS. 2 and 3. , similar to the conventional arm liner 10 (see Fig. 6), skirt parts 12' and 12' are formed in a distributed manner to protect the side surfaces of the upper half of the spider arm 22 in the longitudinal direction. Skirt part 1
Reinforcement parts 14', 14', 14', . However, the reinforcing portion 14 provided at the rising slope portion 16 of the central liner 15 section
Since a' is a portion rising from the spider arm 6, its digit length is set to be large.

Next, the function of this arm liner will be explained with reference to FIG. Now, as shown in FIG. 4, when the back part 13' of the arm liner 10' is arranged along the longitudinal direction of the spider arm 22 with their ends together, each reinforcing part 14', which also serves as a leg girder, 1
4a' comes into contact with the upper surface of the spider arm 22.

At the same time, the skirt portion 12' (see FIGS. 2 and 3) is the same as the skirt portion 12'' of the arm liner 10'' of the same shape, which is arranged to face each other across the spider cap 9 in FIG. , located on the side of the spider arm 22. As a result, the arm liner 10' is attached to the upper half of the spider arm 22 in a so-called saddle shape.
At this time, the spider cap 9 is covered by the cylindrical portion 17 and the cylindrical portion 17'' of the arm liner 10'' facing the cylindrical portion 17.

Next, a bolt 19 is inserted into a bolt hole 18 provided in the back portion 13' and is screwed onto the spider arm 22 side, thereby fixing the arm liner 10'. That is, the spider arm 22 is attached to the back part 13 of the arm liner 10', 10''.
13'', and the spider cap 9 is further protected by cylindrical parts 17 and 17''.

In the above embodiments, for example, the case where the spider cap is covered by a pair of opposing cylindrical portions has been described. However, in other embodiments, an arm liner having a tubular portion that can cover the spider cap alone, or three or four arm liners may be provided.
An arm liner having a cylindrical portion that can cover the spider cap with two cylindrical portions may be provided.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of a liner of a spider arm according to an embodiment of the invention, FIG. 2 is a plan view of the liner of the spider arm in FIG. 1, and FIG. Fig. 2 is an arrow view, Fig. 4 is an explanatory diagram showing how the liner of the spider arm shown in Fig. 1 is attached, and Fig. 5 is a rotary crusher equipped with a conventional arm liner, which is the background of this invention. 6 to 8 show the conventional arm liner in FIG. 5, and FIG. 6 shows a partially cross-sectional front view thereof, and FIG. 7 is a plan view thereof, and FIG. 8 is a view taken along the arrows in FIG. 7. Explanation of symbols, 1...Upper body, 2...Crushing chamber,
6...Spider, 9...Spider cap, 1
0', 10''...arm liner, 22...spider arm, 13'...back, 15...center liner section.

Claims (1)

[Claims for Utility Model Registration] In a liner of a spider arm installed along an arm of a spider of a rotary crusher installed in an upper end opening of a body forming a crushing chamber, A liner for a spider arm, in which a center liner part that covers the entire spider central support part and at least the outer periphery of the spider cap is integrally molded with an arm liner part that covers the upper half part.