JPH06134339A - Crusher - Google Patents

Abstract

PURPOSE: To improve the working efficiency of a pulverizer by preventing the clogging of a feed opening part of a pulverizing device caused by over-sized lump. CONSTITUTION: The over-sized lump 15 is prevented to enter the feed opening part of the pulverizing device 3 and only sufficiently small-sized lump enters by forming a rectangular discharge opening part 14 at the front end part of a feed hopper 14. Then, the working efficiency of the pulverizer is improved by preventing clogging of the pulverizing device 3 with the over-sized lump and interrupting the pulverizing work.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a crusher. The invention can be used as a mobile crusher, especially for small-scale breaking and reclaiming operations.

[0002]

2. Description of the Prior Art In the prior art, a feed hopper mounted rotatably vertically on the feed end of the hopper is used in some LOKOTRACK ™ grinders. The material is fed to the hopper, which then slides down into the feed opening of the mill. These hoppers are open chutes that allow even oversized lumps to enter the feed openings. If an oversized mass remains in the hopper, it can be removed by pivoting the hopper.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a crusher with restricting means which prevents oversized lumps from entering the feed opening of the crusher.

[0004]

The crusher according to the present invention comprises:
It has a swivelable feed hopper with limiting means for preventing too large agglomerates from entering the feed opening of the crusher. The invention and some of its preferred embodiments are defined in detail in the claims.

[0005]

In the present invention, it is an advantage that too large a mass never blocks the feed opening of the crusher. A further advantage is that oversized chunks can be easily removed through the feed end of the hopper by tilting the hopper.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The crusher shown in FIG.
It has a crushing device 3 and a supply hopper 4.

The chassis 1 is self-supporting. The drive means can be, for example, an electric motor or an integrated diesel generator.

The crushing device 3 is a jaw crusher arranged at the rear part of the chassis 1. The eccentric shaft 5 is orthogonal to the longitudinal direction of the chassis, the movable jaw 6 is on the front side, and the movable jaw 7 is on the rear side.

The supply hopper 4 is arranged at the rear end of the chassis 1 so as to feed the material forward toward the supply opening of the crushing device 3. The lower end of the front end of the hopper is pivotally attached to the horizontal shaft 8 of the chassis 1. The hopper can be tilted by a hydraulic cylinder 9 driven by a hydraulic power unit 10.

The supply hopper 4 includes a bottom plate 11, side plates 12 and a front plate.
Equipped with 13. At the front end of the hopper, a rectangular discharge opening 14 is formed as a limiting means by a plate, which prevents an oversized lump 15 from entering and allows a sufficiently small lump to enter the feed opening of the crusher 3. I have to.

In the feed position (FIG. 1), the bottom plate 11 is inclined forward so that the material slides down towards the discharge opening 14. When a lump 15 that is too large enters the hopper 4,
It can be removed by tilting the hopper rearward so that the mass passes through the rear end of the hopper and slides down to the ground. The hopper is tapered towards the discharge opening to prevent oversized chunks from sticking together due to friction.

The feed hopper 4 can also be tilted slightly rearward to the loading position so that material can be easily loaded, for example by a tractor loader. The rear end of the bottom plate is curved upward to prevent material from falling into the loading position.

The front plate so that the rear end portion of the front plate, the bottom plate 11, and the side plate 12 form a larger limiting opening 17.
13 extends somewhat rearward over the supply hopper 4. The limiting opening is further covered by a flexible strip 18 that is fished in, which allows the mass to enter but reduce the amount of dust that emerges from the hopper.

In order to prevent dust clogging, the hopper is further provided with a dust consolidating medium such as water or mixed water, and a jetting device 19 for jetting air to the material supplied from the discharge opening 14. .

The side plate of the chassis 1 is extended above the discharge opening 14 so that the material does not drop from the side of the chassis even when the supply hopper 4 is tilted.

The crusher is also equipped with a horizontal indicator 20 which monitors the discharge opening 14 and gives an alarm signal when there is no material passing through the opening, so that the operator has a time to put the material in the hopper. I can know. The signal can be, for example, a signal lamp as shown in FIG. Other signals such as acoustic signals can also be used. The signal can be wirelessly communicated to the operator, if desired.
The horizontal indicator is preferably based on suitable optical means such as an infrared lamp.

The level indicator 20 can also be connected to an automatic controller which, if desired, automatically tilts the feed hopper to the loading position as more material is loaded. In principle, removal of oversized lumps can also be handled automatically if the necessary safety measures are taken. There are suitable limit switches and other necessary equipment to control the tilt. Of course, tilting and other operations can be handled entirely or partially manually. In that case, it is preferable to use suitable remote control means.

To stop the injection when there is no material passing through the discharge opening 14, the injection device can be connected to a horizontal indicator 20 or a tilting device.

The crushing device may be arranged on a conveyor, such as a belt conveyor, for transferring the crushed material onto the platform of a truck. The conveyor is preferably arranged to transfer material forward from the crusher.

To prevent possible damage to the belt conveyor 22 by concrete reinforced rods or other similar members, the grinder is equipped with a protective plate 23 below the discharge opening 24 of the grinder 3. There is. This plate rotates the falling rod forward so that it does not directly hit the belt. The upper end 25 of this plate is pivotally mounted, and its inclination can be adjusted by a hydraulic cylinder.

The chassis has two longitudinal rails 28
And a lower frame 27 having an exterior plate 29. The grinder is relatively small in size and weight so that it can be transported on a truck. The lower frame is designed to facilitate transportation. The lower frame armor is provided with a fixed bracket 30 for engaging the loading arms of a self-loading truck. The rail has a front roller to facilitate sliding of the rail on the track and on the ground when loading or unloading.
31 and a rear roller 32 are provided.

The rear end of the rail 28 will be on the ground during grinding. The front ends of the rails are supported on the ground by legs 33 so that the conveyor 22 can be easily placed under the grinder. The legs are mounted on the horizontal axis 34 of the chassis 1 so that they can pivot between the vertical grinding position (FIG. 1) and the longitudinal transport position.
It is mounted so that it can rotate. The leg is further provided with a pivotable locking arm 35 which fixes the vertical position of the leg at point 36 on the chassis.

After grinding, it is required to remove the metallic material from the ground material. This is a fixed bracket 30
This is done with a magnetic separator suspended in the air.

During crushing, the discharging means of the crushing device is covered with a coating in order to prevent dust from rising to the surroundings. Also, the chassis 1 is preferably made as rigid as possible.

FIG. 3 shows the loading of the crusher by means of a truck with an articulating loading arm. Also, FIG.
Indicates the loading and conveying position (shaded portion) of the supply hopper 4.

The crusher can also be transferred to a conventional truck or trailer. In this case, the crusher can be loaded by lifting it from the rear end by any suitable means available at the construction site, such as a tractor loader. This example is shown in FIG.

[0027]

As is apparent from the above description, the crusher of the present invention has the feed hopper provided with the limiting means for preventing the excessively large lumps from entering the feed opening of the crusher. With this, too large a lump blocks the supply opening of the crushing device, and the crushing work is not forced to stop,
Therefore, the working efficiency of the crusher is improved.

[Brief description of drawings]

FIG. 1 is a side view of a crusher according to the present invention.

FIG. 2 is an enlarged plan view of a supply hopper of the crusher.

FIG. 3 is an illustration showing the loading of a crusher by truck with an exchangeable platform.

FIG. 4 is an explanatory view showing loading of a crusher by a conventional truck.

[Explanation of symbols]

 1 Chassis 3 Crusher 4 Supply hopper 14 Discharge opening

Claims (25)

[Claims] 1. A crushing device having a frame having a front end and a rear end, a supply opening for receiving a mass of material to be crushed from above, and a discharge opening for discharging the crushed material downward. A feed hopper having a front end portion and a rear end portion, and a discharge opening for feeding the material to be ground at a feed position of the supply hopper downward to a supply opening portion of the crushing device at a front end portion of the supply hopper. A crusher provided with a section, and further comprising limiting means for preventing an oversized lump from entering the feed opening of the crusher from the feed hopper. 2. A crusher as claimed in claim 1, characterized in that the discharge opening acts as a limiting means. 3. A crusher as claimed in claim 1, characterized in that the feed hopper converges towards the limiting means so that too large agglomerates do not stick to the hopper due to friction. 4. The crusher according to claim 1, wherein the discharge opening is a rectangular opening. 5. The feed hopper also has a larger limiting opening in front of the feed opening.
A crusher of any one of 4 to 4. 6. A crusher as claimed in claim 5, characterized in that the larger restriction opening is covered by a flexible wall which reduces the amount of dust rising from the hopper. 7. The crusher according to claim 1, wherein the feed hopper has a jetting means for spraying a medium for hardening dust on the material. 8. The crusher according to claim 1, wherein a feed hopper is pivotably attached to a horizontal axis of the chassis so that the feed hopper can be tilted rearward from the feed position. 9. The crusher according to claim 8, wherein the feed hopper is pivotally attached to a front end portion of the feed hopper. 10. A crusher as claimed in claim 8 or 9, characterized in that the feed hopper is mounted such that it can be tilted rearward from the feed position to a loading position where a mass of material is placed in the hopper. 11. The crusher according to claim 8, wherein the feed hopper is mounted so that it can be tilted rearward from the feed position to a removal position where lumps fall from the hopper. 12. A horizontal indicator for monitoring the feed to the crusher and for producing a signal when additional material is to be placed in the feed hopper.
Any one of 11 crushers. 13. A crusher according to claim 1, further comprising an automatic device for tilting the feed hopper in response to a signal generated by a horizontal indicator. 14. A crusher as claimed in claim 7, 12 or 13, characterized in that it comprises an automatic device for controlling the spray in response to a signal generated by a horizontal indicator. 15. The crusher according to claim 7, wherein the spray is controlled according to the inclination of the supply hopper. 16. A crusher device having a guide plate below the discharge opening of the crushing device for changing the direction of the falling crushed material along the direction of the conveyor located below the discharge opening. One of the crushers. 17. The crusher according to claim 16, wherein the inclination of the guide plate is adjustable. 18. A crusher as claimed in claim 1, characterized in that the discharge opening of the crusher is covered by a cover which reduces the amount of dust that rises around. 19. The crusher according to claim 1, wherein the frame is a noise-prevention type. 20. The crusher according to claim 1, wherein the frame is self-supporting. 21. A crusher as claimed in any one of the preceding claims, characterized in that the frame comprises at least one leg assembly for raising the frame from the ground. 22. The crusher of claim 21, wherein the leg assembly is configured to raise only one end of the frame from the ground. 23. The crusher of claim 22, wherein the leg assembly is configured to raise the front end of the frame. 24. The crusher of claim 23, wherein the leg assembly has longitudinally pivotable legs. 25. A crusher as claimed in any one of claims 1 to 24, characterized in that the frame has means for mounting the crusher on a transfer platform for transport.