JPS5844413B2 - Guide device for the upper part of the immovable teeth of the jaw crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a guide device for a portion above immovable teeth in a show crusher for crushing objects such as rocks and concrete blocks.

In a conventional show crusher, a nearly vertical immovable tooth is fixed between both side frames, and a movable tooth that extends diagonally upward from below the immovable tooth is arranged to face the immovable tooth, and the movable tooth is moved relative to the immovable tooth. A large piece of material to be crushed is placed above the opening between both teeth, and the movement of the movable teeth relative to the fixed teeth crushes the other piece of material to be crushed into small pieces. Devices that eject objects through openings are well known.

In the above-mentioned show crusher, the size of the input port for the material to be crushed is limited, so relatively large chunks of material to be crushed must be roughly broken before being fed into the show crusher, which causes noise and Although this would increase labor costs, in order to solve this problem, the fixed tooth was divided into two parts, upper and lower, so that the upper part of the fixed tooth could be moved horizontally and fixed there. What you did is
This method has already been proposed by the inventor of this invention (Japanese Patent Laid-Open No. 7667/1983).

According to this proposal, if the upper part of the immovable tooth is moved to a position relatively distant from the movable tooth and fixed there, relatively large chunks of material to be crushed can also be thrown into the opening of the show crusher and immovable. It can be roughly divided between the upper part of the tooth and the upper part of the opposing movable tooth.

The roughly divided material to be crushed, together with the material to be crushed that was relatively small at the time of input, is separated between the lower part of the stationary tooth and the lower part of the movable tooth, which is opposite and relatively close to it. It is further crushed.

However, in this proposal, a guide groove with an open front, that is, a normal shape, is formed horizontally on the inner surface of both side walls for guiding the upper part of the fixed tooth, and a guide member provided on the side of the upper part of the fixed tooth. slides in the guide groove, so that when the upper part of the fixed tooth is in the retracted position away from the moving tooth, the widened opening between the upper part of the fixed tooth and the moving tooth is The guide groove will be exposed in the part, and the powder particles generated during crushing will enter the guide groove and the guiding action will be inhibited.

The main purpose of this invention is to solve these difficulties.

To achieve this object, the present invention provides a groove which extends horizontally forward from the most retracted position of the upper portion of the immovable tooth beyond the most advanced position, and has an open front groove between the most retracted position and the most advanced position. A guide groove is provided on the inner surface of the both side walls, and the guide groove is formed as a closed groove on the front side. The present invention is characterized in that the guide rod, which is slidably housed in the guide groove, is fixedly attached substantially at its rear end to the side of the upper portion of the immovable teeth.

With this configuration, regardless of the position of the upper portion of the fixed tooth, the portion of the guide groove facing the opening between the fixed tooth and the movable tooth will be protected by the guide rod even if the front side of the groove is open. Exposure to the apertures is avoided, thus clearly solving the disadvantages of the above proposals as mentioned above.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, a substantially vertical stationary tooth 2 and a movable tooth 3 that extends obliquely upward from below are disposed between the machine frame 1.

The movable tooth 3 is supported on the machine frame 1 by a support rod 4 at its lower end, and is constantly pulled toward the end of the machine frame 1 (toward the right) by a spring 5 at its lower end.

Specifically, the end of the support rod 4 on the machine frame side and the end of the spring 5 on the machine frame side are attached by a wedge mechanism 6 to a holding frame 7 that can be adjusted horizontally with respect to the machine frame 1, whereby the immovable tooth 2 The opening degree of the lower end of the opening 8 between the movable tooth 3 and the movable tooth 3 can be adjusted.

The upper end of the movable tooth 5 is connected to a hydraulic cylinder 10 via a lever 9, and swings when the hydraulic cylinder is actuated.

Due to this rocking movement and because of the arrangement of the support rod 4 and the spring 5 as described above, the movable tooth 3 as a whole performs a crushing movement with respect to the fixed tooth 2.

Instead of lever 8 and hydraulic cylinder 10, variants such as those shown in FIGS. 3 and 4 can also be used.

In this case, the upper end of the moving tooth 3 is connected to a shaft 1 having a power transmission pulley 11 and a flywheel 12 at both ends.
The shaft 90 is attached to the eccentric part 14 of the
Performs circular motion in response to rotational motion.

With this arrangement as well, the movable teeth 3 as a whole achieve a crushing movement with respect to the fixed teeth 2.

Referring again to FIGS. 1 and 2, the immovable tooth 2
is divided into an upper part 2a and a stationary lower part 2b, and the upper part 2a is a multiple series (
In the illustrated example, it is fixed to the end of a plunger that reciprocates in two hydraulic cylinders 16, 170, and is fixed at an appropriate position by sliding reciprocating along an appropriate guide by the action of the hydraulic cylinders. .

In FIG. 1, the adjusted position is shown in solid lines in which the upper part 2a is retracted so that the upper part of the opening 8 is wide open as indicated at 18, and the upper part 2a is advanced and is substantially straight relative to the lower part 2b. The adjusted position is indicated by a broken line 2a'.

5 and 6 show a modification of the drive mechanism of the upper part 2a of the stationary tooth.

In this, a threaded rod 21 that engages with a nut member 20 fixed to an H-shaped member 19 attached to the upper portion 2a of the fixed tooth is rotatably supported by its unthreaded portion, and is connected to a thrust receiver 22 and a driven gear 23. has.

This gear 23 is drivingly connected to a reversible motor 25 via a suitable gear transmission 24.

The upper portion 2a moves forward and backward by the operation of the reversible motor 25.

Reference numeral 26 shown in FIG. 1 indicates a grid feeding mechanism at the lower end of the opening 8.

An important feature of this invention is that the inner surfaces 28 (FIGS. 1 and 2) of both side walls 27 provided on the machine frame 1 are provided with unique guide grooves 29 as shown in FIGS. 7 and 8. .

This guide groove 29 extends horizontally in a straight line from the rearmost position 30 of the upper portion 2a of the fixed teeth (the position indicated by the solid line in FIG. 1) to the most forward position of the upper portion 2a (the position shown in FIG. 1). It is formed as a groove 32 of ordinary rectangular cross section with an open front up to the position 31 (indicated by a dashed line), and extends forward from this position 31 to a position 33 spaced forward by a distance equal to the distance between this and the position 300. It is extended to 34.34 here.
It is formed as a groove whose front is closed as shown in a.

There is at least an open groove 3 in the guide groove 29 in the length direction thereof.
A guide rod 35 extending by a length of 2 is slidably housed.

The guide groove 35 has a rectangular cross-section that fits tightly into the guide groove 29 and is fixedly attached at the rear end 36 to the fixed tooth upper part 2a.

According to the above-described structure, the inside of the guide groove 29 is shielded from the openings 8 and 18 on the right side of the fixed tooth upper portion 2a, regardless of the position of this upper portion, and therefore, when crushing, the inside of the guide groove 29 is shielded from the openings 8 and 18 on the right side of the fixed tooth upper portion 2a. There is no risk of the resulting powder particles entering the guide groove.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal vertical sectional view of an embodiment of the show crusher;
Figure 2 is a plan view of the show crusher shown in Figure 1;
The figure is a partial view showing a modification of the drive mechanism for the moving teeth of the show crusher, FIG. 4 is a view showing the shaft device included in the part shown in FIG. 3, and FIG. 5 is the upper part of the stationary teeth of the show crusher. Partial longitudinal vertical cross-sectional view showing the deformation of the drive device, No. 6
5 is a plan view of the portion shown in FIG. 5, FIG. 7 is a front view of a guide device for the upper portion of the immovable teeth of the show crusher, and FIG. 8 is a horizontal sectional view of the portion shown in FIG. 7. In the drawing, 2 is a fixed tooth, 2a and 2b are upper and lower parts of the fixed tooth, 3 is a moving tooth, 27 is a side wall, 29
is the guide groove, 32 is the open groove part on the front, 34, 3
Reference numeral 4a indicates a closed groove portion at the front, and reference numeral 35 indicates a guide rod.

Claims (1)

[Claims] 1 has a nearly vertical immovable tooth and a corresponding diagonally arranged movable tooth, the immovable tooth is divided into two parts, upper and lower, and the upper part of the immovable tooth is horizontally arranged between the side walls. In a show crusher that can be moved to and placed there,
The upper portion of the immovable tooth extends horizontally from the most retracted position to the most advanced position and further forward, and is formed as a groove with an open front between the most retracted position and the most advanced position, and a groove with a closed front in front of it. A guide groove formed as an open groove is provided on the inner surface of the both side walls, and extends in the longitudinal direction of the guide groove by at least a length substantially equal to the open groove and is slidable into the guide groove. 1. A guide device for an upper portion of a show crusher, characterized in that a housed guide rod is fixedly attached at substantially the rear end thereof to a side of the upper portion of the immovable tooth.