JPS6043771B2 - Joey Craftssia - Google Patents

Description

[Detailed description of the invention] This invention relates to a jaw crusher.

The jaw crusher has a fixed tooth plate and a movable tooth plate, and the left and right sides are surrounded by side walls to form a crushing chamber. Rocks and ores input through the supply port at the upper end are crushed in the crushing chamber, and then discharged from the discharge port at the bottom. It is something to do.

Conventionally, in such a jaw crusher, the left and right side walls are vertical, so the width of the crushing chamber in the left-right direction is the same from the supply port at the top end to the discharge port at the bottom end.

Therefore, there is a problem in that the cross-sectional area of the crushing chamber becomes minimum near the discharge port, and the discharge of crushed materials is restricted.

In other words, the filling rate of crushed materials is highest near the discharge port, resulting in a compacted state.

Crushing in such a compacted state with a high filling rate not only crushes even fairly small rocks that become products, but also wastes (
(unnecessary) power required. In order to solve this problem, it is conceivable to make the width of the crushing chamber wider toward the bottom, but this invention not only increases the width of the crushing chamber toward the bottom, but also increases the width of the crushing chamber. The concave grooves and protrusions provided on the fixed tooth plate and the movable tooth plate are made larger toward the bottom to further enhance the effect.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Details of the jaw crusher of the present invention will be explained below based on an embodiment shown in the accompanying drawings.

In the figure, reference numeral 1 denotes a front frame, which in the case shown is divided into upper and lower parts and joined together with bolts, etc., and a fixed tooth plate 2 is fixed to the front part of the frame. It is divided into two parts. Reference numeral 3 denotes left and right side frames that are integral with the front frame 1, and this frame 3 is also formed into upper and lower parts and joined together by means of bolts or the like.

A side wall material 4 is fixed to the inside of the left and right side frames 3 by means such as bolting, and the side wall material 4 is inclined so that the width in the left and right direction becomes wider toward the bottom as shown in FIG. There is. Although this side wall material 4 is also formed into upper and lower parts, it may be integrally formed. Reference numeral 5 denotes bearings fixed on the left and right side frames 3, and both ends of the eccentric shaft 6 are rotatably supported by the bearings 5.

Reference numeral 7 denotes a swing jaw, into which an eccentric portion of the eccentric shaft 6 is fitted into a shaft hole at its upper end.

Reference numeral 8 in FIG. 1 is a rear frame fixed near the rear of the left and right side frames 3, and a toggle block 9 is movably fixed to the front part of the rear frame. A toggle plate 10 is interposed between the toggle block 9 and the lower back surface of the swing jaw 7.

11 is a traction rod.

Reference numeral 12 in FIG. 1 is a spring holder fixed near the upper part of the left and right side frames 3, and the lower end of the hanging bolt 13 is rotatably connected to the protrusion provided on the back side of the swing jaw 7 with a pin. loosely fit into the through hole of the pedestal 12, and then tighten the bolt 1.
A coiled spring 17 is attached in a compressed state to the bolt 13 between the spring seat 15 and the spring seat 16 on which the bolt 13 is loosely fitted on the pedestal 12. The upward force of the spring 17 is applied to the swing jaw 7 by the spring 17 via the hanging bolt 13.
However, a plurality of hanging bolts 13 are provided.

Further, the upward force can be adjusted by a hydraulic jack (not shown) provided between the spring holder 12 and the spring holder 16.

That is, the adjustment of the force is performed by the swing gear 7 at the time of startup.
In order to balance the weight of the material, the number of lifting blades is further increased during crushing.
Note that the side frame 3 may be extended upward, and the spring holder 12 may be disposed above the swing-jyo 7 to lift the swing-jyo 7.

Further, although the spring holder 12 is fixed to the side frame 3, it may be fixed to a frame provided separately from the side frame 3. Furthermore, the spring holder 12 can be used as a substitute,
The basics. It is also possible to arrange a bolt 13 or the like at the bottom of the swing jyo 7 to push the swing jyo 7 up.

The left and right side wall members 4 fixed to the inside of the left and right side frames 3 are connected to the fixed tooth plate 2 and the swing jaw. The movable tooth plate 18 attached to the swing gear 7,
A crushing chamber 19 is constituted by the fixed tooth plate 2 and the side wall material 4.

Reference numeral 20 designates flywheels fixed to both ends of the eccentric shaft 6. A pulley 21 is fixed to the outside of one of the flywheels 20, and this V pulley 21 is driven by a suitable drive device using a belt.

Figures 3 to 5 show details of the fixed tooth plate 2,
A plurality of grooves 22 and protrusions 23 are alternately formed on the surface, and the width and depth of these grooves increase toward the wider part at the bottom, but only the width is increased, and the depth is They may be the same.

Incidentally, the movable tooth plate 18 is also made to be aligned with the fixed tooth plate 2. In addition, in the illustrated case, the fixed tooth plate 2 has two stages, upper and lower, as shown in FIG. can also be formed in the same way.

Conversely, the fixed tooth "plate 2" can be made without steps like the movable tooth plate 18 shown in FIG. By driving the shaft 6 in the direction of the arrow in FIG. 1, the swing jaw 7 swings, and the material to be crushed, which is introduced into the crushing chamber 19 from the supply port 24 at the upper end, is sandwiched between the fixed tooth plate 2 and the movable tooth plate 18. It descends while being crushed and crushed, and reaches the discharge port 2 at the lower end.
It is discharged from 5.

In the jaw crusher of the present invention, the width of the crushing chamber 19 in the left and right direction not only becomes wider as it goes downward as described above, but also the grooves and protrusions provided on the fixed tooth plate and the movable tooth plate are also located at the bottom. The width gets wider as you go.

Therefore, as the crushed material descends, it is guided by the grooves and protrusions, and the distance therebetween is forcibly widened from side to side as it falls. Therefore, compared to conventional crushers, the compaction effect of the crushed material is reduced, there is no risk that the crushed material will become finer than necessary, and the crushed material is discharged smoothly, reducing power consumption and reducing the particle size of the crushed material. It also has the effect of keeping the amount constant. In the embodiment, the swing jaw 7 is lifted by a spring, but in the case of a small crusher, such a lifting spring can be omitted.

Further, although the single toggle type jaw crusher is described in the embodiment, the present invention can also be applied to a double toggle type jaw crusher and a hydraulic jaw crusher.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view showing one embodiment of the jaw crusher of the present invention, Fig. 2 is a partial longitudinal sectional front view of the same as above, Fig. 3 is a front view showing an example of the fixed tooth plate, and Fig. 4 is the same as above. top view of
FIG. 5 is also a bottom view. 2... Fixed tooth plate, 4... Side wall material, 18
...Moving tooth plate, 19...Crushing chamber, 24.
...Supply port, 25...Discharge port.

Claims (1)

[Claims] 1. In a jaw crusher in which a fixed tooth plate, a movable tooth plate, and left and right side walls constitute a crushing chamber having a supply port at the top and a discharge port at the bottom, at least one of the side walls is inclined to increase the width of the crushing chamber in the left and right direction. The jaw crusher is made wider towards the bottom.