JP2515617Y2 - Horizontal automatic gap adjuster - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically adjusting a gap between a fixed jaw of a jaw crusher and a lower end of a swing jaw.

[0002]

2. Description of the Related Art A cross which supports a toggle block as a device for adjusting a clearance between a fixed jaw and a lower end of a swing jaw, that is, an outlet set by moving a toggle block supporting a rear end of a toggle plate of a jaw crusher back and forth. Insert a clip with a different thickness between the member and the toggle plate (adjustment shim), or insert a vertically movable wedge between the toggle block and the cross member, and move this wedge up and down with hanging bolts or hydraulic cylinders. There is something to adjust.

[0003]

Among the adjusting devices as described above, the one for sandwiching the clip has means for inserting the clip by forming a gap for inserting the clip between the toggle block and the cross member. It is necessary to work, the one that uses wedges takes time because it is a structure that manually operates the suspension bolts that move the wedges up and down, and the one that uses hydraulic cylinders requires a hydraulic pump and the hydraulic cylinders during crusher operation. To prevent damage, there was a problem that the hydraulic cylinder had to be removed during operation.

An object of the present invention is to solve the above-mentioned problems of the conventional adjusting device and to provide a horizontal automatic gap adjusting device which is extremely easy to operate.

[0005]

In order to solve the above-mentioned problems, the present invention relates to a jaw crusher in which a swing plate is swingably suspended by an eccentric shaft provided on a frame of the crusher and a lower end rear portion of a swing jaw is supported by a toggle plate. , A toggle block that supports the rear end of the toggle plate is attached to the cross member fixed to the frame so that it can slide back and forth, and a pair of left and right symmetrical wedges are attached to the rear of this cross member so that it can move in the left and right directions However, a configuration is provided in which a screw jack mechanism driven by an electric motor is provided to slidably contact the front slopes of both wedges with a bilaterally symmetrical slope formed on the rear side of the toggle plate to move the wedges closer to or away from each other. It was adopted.

[0006]

When adjusting the clearance, the screw shaft is normally or reversely rotated by the electric motor controlled by the switch operation. When the screw shaft is normally or reversely rotated in this way, the left and right wedges screwed onto it approach or separate, and the front slopes of these left and right wedges slide while contacting the rear slope of the toggle block. Move the toggle block forward or backward to adjust the exit set.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, A is a frame of a jaw crusher, in which side liners 3 are fixed inside the front portions of both side walls, and fixed jaws 1 are fixed inside the front wall. An eccentric shaft 4 is installed on the upper middle portion of both side walls of the frame A, and the upper end of the swing jaw 2 is suspended by the shaft 4 so as to be swingable.

Reference numeral 6 denotes a cross member whose both ends are fixed to the rear portions of both side walls of the frame A. The cross member 6 has a U-shaped cross section as shown in FIG. 1, and a toggle block 7 is mounted therein so as to be slidable forward and backward. The front and rear ends of the toggle plate 12 are engaged with the toggle seat 10 provided on the lower rear side of the swing jaw 2 and the toggle seat 11 provided on the front side of the toggle block 7.

A tension rod 14 is inserted into a hole of a bracket 13 fixed to the lower portion of the block 7, and a hook at a tip of the rod 14 is engaged with a ring 15 at a rear portion of a lower end of the swing plate 2.

Further, on the rear side of the bracket 13,
A coil spring 16 is fitted to the rod 14, a spring receiver 17 fitted from the rear portion of the rod 14 is applied to the rear portion of the spring 16, and a nut 18 is screwed into a male screw provided at the rear portion of the rod 14, and the spring 16 is compressed by the nut 18. The elasticity of the lever is adjustable.

As shown in FIG. 2, left and right symmetrical slopes 20 are formed on the rear side of the toggle block 7, and a pair of left and right symmetrical wedges 2 are provided between the slopes 20 and the rear wall of the cross member 6.
1 intervenes.

The front surfaces of both wedges 21 are blocks 7.
Is a slanting surface that slidably contacts the left and right slanting surfaces 20, and both the wedges 21 are moved toward or away from each other by the screw jack mechanism B.

The screw jack mechanism B has a right-hand thread 2
2 and a screw shaft 24 having a left screw 23, a right screw nut 25, a left screw nut 26, and a drive device groove C having an electric motor 27.

That is, the screw shaft 24 is rotatably fitted in the lateral hole of each wedge 21, and both ends thereof are supported by bearings provided on both side walls of the frame A. Further, each wedge 21 is provided with a vertical hole having a diameter larger than that of the horizontal hole through which the screw shaft 24 penetrates so as to communicate with the horizontal hole. , 26 are screwed with the right screw 22 and the left screw 23.

The drive mechanism C comprises an electric motor 27, a speed reducer, a transmission mechanism and the like.

In the above-mentioned structure, the electric motor 27 of the drive mechanism C is rotated by the switch so that the motor shown in FIG.
When the screw shaft 24 shown in FIG. 2 is rotated to the right as shown by the arrow, the right screw 22 and the left screw 23 separate the wedges 21 from each other, and when the screw shaft 24 is rotated to the left, they approach each other.

Therefore, the toggle block 7 moves backward or forward, the lower end of the swing jaw 2 approaches or separates from the lower end of the fixed jaw 1 via the toggle plate 12, and the outlet set is adjusted.

[0018]

[Advantages] Since the adjusting device of the present invention can easily adjust the outlet set by only operating the switch, the outlet set can be adjusted safely in a shorter time than the conventional manual adjusting method. Further, since the outlet set is adjusted by the electric motor, there is an effect that a hydraulic pump or the like is unnecessary.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an embodiment.

FIG. 2 is a sectional view taken along the line II of FIG.

[Explanation of symbols]

 1 Fixed jaw 2 Swing jaw 3 Side liner 4 Eccentric shaft 6 Cross member 7 Toggle block 12 Toggle plate 20 Slope 21 Wedge 24 Screw shaft A Frame B Screw jack mechanism C Drive mechanism

Claims (1)

(57) [Scope of utility model registration request] 1. A jaw crusher in which a lower end rear portion of a swing jaw suspended by an eccentric shaft provided on a frame of a crusher is swingably supported by a toggle plate, and a toggle block which supports the rear end of the toggle plate is mounted on the frame. It is attached to the fixed cross member so that it can slide back and forth, and a pair of left and right symmetrical wedges are attached to the rear part of this cross member so that it can move in the left and right directions. A horizontal automatic gap adjuster equipped with a motor driven screw jack mechanism that slidably contacts the left and right symmetric slopes formed in the above, and moves both wedges toward and away from each other.