JPS62279849A - Jaw crsher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a jaw crusher, and particularly to a single-trouble type jaw crusher for crushing a cast runner, etc. that has been separated from a product. .

[Conventional technology]

Generally, casting runners and the like separated from the product are crushed and then reused as casting raw materials.

Conventionally, as a crusher for crushing the above-mentioned casting runners, etc.,
For example, a single trouble type jaw crusher shown in FIG. 5 is known.

In the figure, reference numeral 1 indicates a fixed tooth that is attached almost perpendicularly to the front wall of the casing 2, and reference numeral 3 indicates a movable tooth that together with the fixed tooth 1 forms a laterally closed crushing chamber 4. The movable tooth 3 is The upper end of the casing 2 is pivotally supported by an eccentric shaft 5 which is horizontally supported at the upper rear (right side in the figure) of the casing 2 so as to be able to move toward and away from the fixed tooth 1. In the case of left and right) round trip i! It is attached to the swing jaw 6 that rotates. A pulley 7 is attached to the shaft end of the eccentric shaft 6, and the V pulley 7 is interlocked with an electric motor (both not shown) via a belt.

A door angle block 9 is attached to a rear frame 8 suspended horizontally at the rear lower part of the casing 2, and a trouble plate 10 is interposed between the door angle block 9 and the rear of the lower end of the swing jigo 6. . An adjustment pivot 1 for adjusting the discharge port gap is interposed between the rear frame 8 and the door angle block 9. On the other hand, the bracket 12 attached to the rear frame 8 has a swing jaw 6 at one end.
A traction rod 13 pivotally attached to the rear of the lower end is inserted, and a spring receiver 14 and a bracket 1 attached to the other end of the traction rod 13 are inserted.
A spring 15 is interposed between the swing gear 3f-6 and the swing gear 3f-6 to pull the lower end portion of the swing gear 3f-6 rearward.

In addition, in FIG. 5, reference numeral 16 denotes a hydraulic jack that presses the door angle block 9 to adjust the discharge port gap, 17a, 1
7b is a trouble sheet attached to the lower end rear part of the swing jaw 6 and the door angle block 9.

The geo crusher having the above structure reciprocates back and forth while moving the movable teeth 3 up and down by the operation of an electric motor, and works with the fixed teeth 1 to crush materials such as casting runners placed in the crushing chamber 4. The product is sequentially crushed and the crushed products are discharged through the discharge port.

[Problem that the invention seeks to solve]

However, when crushing casting runners, etc. using the above-mentioned conventional crusher, the casting runners, etc. have a wide variety of very complicated shapes, and are separated from the runner to the sprue and the molten pool. Since the removed feeder etc. are rod-shaped, there is a problem that when the swing jaw 6 is positioned on the open side, the rod-shaped casting runners etc. are discharged from the discharge port in an unbroken state.

SUMMARY OF THE INVENTION Therefore, the present invention provides a single-trouble type jaw crusher that can further finely crush casting runners and the like that have been crushed into rod shapes.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has a fixed tooth attached to the front wall of the casing, the upper end of which is pivotally supported by an eccentric shaft supported by the casing, and is arranged opposite to the fixed tooth so as to be able to move toward and away from the fixed tooth. a swinging jaw, a movable tooth attached to the swinging jaw, and a door angle block tilted toward and away from the lower end of the swinging jaw at the rear of the swinging jaw;
A trouble plate is interposed between the door toggle block and the lower end of the swing jigo, multiple hydraulic cylinders are installed to move the door toggle block in order to bring the lower end of the movable teeth closer to the fixed teeth, and the rear lower part of the casing is equipped with a trouble plate. A traction rod is inserted through the bracket and has one end pivotally connected to the lower end of the swinging jaw, and the bracket is interposed between a spring receiver provided at the other end of the traction rod to pull the lower end of the swinging jaw rearward. a damper plate that is attached to the front lower part of the casing and is provided so as to be able to close the outlet of the crushing chamber formed by the fixed teeth and the movable teeth, and a hydraulic cylinder that opens and closes the damper plate. It is.

[Effect]

The casting runners, etc. that have been introduced into the crushing chamber are separated from the fixed teeth and movable teeth by the repeated movement of the swinging jaw toward and away from the fixed teeth, and by the gradual increase in the gap between the discharge ports due to the movement of the door angle block away from the fixed teeth. Due to the compression and shear crushing, the runners etc. are crushed into relatively large pieces and fall down. At the same time, these relatively large primary crushed products are prevented from falling from the discharge port by a damper plate and stored in the crushing chamber, and then the fixed teeth The relatively large primary crushed product is crushed into smaller pieces by repeating the approaching and leaving movements of the swinging jaws, and the toggle block moves closer and closer due to the operation of the hydraulic cylinder, gradually decreasing the gap between the outlets, thereby crushing the relatively large primary crushed product into smaller pieces, and setting the gap between the outlets as required. When the product is crushed, the damper plate is opened and the crushed product falls and is discharged from the discharge port. After the crushed product is discharged, the discharge port is closed by the damper plate, and thereafter, the gap between the discharge ports gradually increases and decreases, and the damper plate opens and closes repeatedly while the swinging jaws continue to move toward and away from each other.

〔Example〕

An embodiment of the single trouble type jaw crusher according to the present invention will be described with reference to FIGS. 1 to 4. In the following description, the same components as those in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

In FIGS. 1 to 3, a toggle block 18 is obliquely oriented toward and away from the lower end of the swing jaw 6 by a guide frame 19 horizontally suspended on the casing 2. A plurality of attached single-acting hydraulic cylinders 20 (only one is shown in the figure) move the lower end of the movable tooth 3 closer to the fixed tooth 1, in other words, to reduce the discharge port gap.

The separation movement of the toggle block 18 is caused by the acting force of the spring 15 interposed between the spring receiver 14 attached to the other end of the traction rod 13 and the bracket 12 as the hydraulic oil is discharged from the hydraulic cylinder 20. It is something that is done.

On the other hand, at the front (left side in FIG. 1) lower part of the casing 2, a horizontal rotating shaft 21 is supported by a bearing bracket 22, and a discharge port is provided on the rotating shaft 21 so that it can be closed. The front edge of the damper plate 23 is attached. The tip of a piston rod 24a of a hydraulic cylinder IJ cylinder 24 that opens and closes the damper plate 23 is pivotally attached to the lower surface near the middle part of the damper plate 23 by a pin 25.
4b is pivoted by a bin 28 to a base 27 placed horizontally on a bit 26 for crushed products (see FIG. 3).

In the jaw crusher having the above configuration, the casting runner etc. introduced into the crushing chamber 4 move toward and away from the swinging jaw 6, that is, the movable teeth 3 relative to the fixed teeth 1 by the operation of the electric motor.
The fixed tooth 1 of the toggle block 18 due to the repetition of J, the discharge of hydraulic oil from the hydraulic cylinder 20, and the action of the spring 15.
Due to the gradual increase in the gap between the discharge ports due to the separation movement from the crushing chamber, these relatively large primary crushed products are compressed and sheared to a relatively large extent and fall while being crushed, and these relatively large primary crushed products are prevented from falling from the discharge port by the damper plate 23 and are sent to the crushing chamber. It is stored in 4.

Next, the discharge port gap is increased by repeating the movement of the movable tooth 3 toward and away from the fixed tooth 1, and by the movement of the toggle block 18 toward the fixed tooth 1 against the acting force of the spring 15 accompanying the supply of hydraulic oil to the hydraulic cylinder 20. By gradually decreasing the
Hydraulic cylinder 24 when a relatively large primary crushed product is further finely crushed and the discharge port gap reaches the required set.
When the damper plate 23 is opened by the operation of , the crushed products are turned into crushed products and are discharged by falling from the discharge port. After discharging the crushed product, the damper plate 23 is closed by the operation of the hydraulic cylinder 24, and the approach and departure movements of the swing jaw 6 are then performed. 1
During the process, the gradual increase and decrease of the discharge port gap and the opening and closing of the damper plate 23 are repeated, and the casting runner etc. are crushed into small pieces.

In the above embodiment, a case has been described in which the front edge of the damper plate 23 for opening and closing the discharge port is pivotally attached to the front lower part of the casing 2 by the rotation shaft 21. As shown, a damper plate 29 is provided with a closable discharge port at the front lower part of the casing 2.
is installed horizontally movably using the guide bracket 30,
This damper plate 29 may be operated by a hydraulic cylinder 32 attached to the front lower part of the casing 2 via a bracket 31.

〔Effect of the invention〕

As described above, according to the jaw crusher of the present invention, relatively fine crushing is performed by the fixed teeth and movable teeth with the discharge port closed while gradually reducing the discharge port gap, and then by opening the damper plate. Since the crushed product is discharged, the casting runners etc. are not discharged in an uncrushed state as in the past, and the casting runners etc. can be finely crushed.

[Brief explanation of the drawing]

Figures 1 to 4 show embodiments of the present invention, and Figures 1, 2, and 3 are longitudinal cross-sectional views, enlarged vertical cross-sections, and enlarged main parts of a jib crusher of one embodiment. A front view, FIG. 4 is an enlarged vertical sectional view of a main part of another embodiment, and FIG. 5 is a vertical sectional view of a conventional jaw crusher. 1...Fixed tooth 2...Casing 3...
・・・・・・Movable teeth 4・・・・・・・・・Crushing chamber 5・・・・・・・・・Eccentric shaft 6・・・・・・・・・・・・・Swing jaw 10...
......Trouble plate 12...
・・・・・・Bracket 13・・・・・・・・・・・・
Traction rod 14... Spring receiver 15... Spring 18... Toggle block 20.
......Hydraulic cylinder 21...
...... Rotating shaft 23 ...... Damper plate 24.
......Hydraulic cylinder 29...
・・・・・・Damper plate 30・・・・・・・・・
・・・Guide bracket 32・・・・・・・・・・・・
Hydraulic cylinder #11:1 2nd Otsu 113th 4th FB

Claims (3)

[Claims] (1) A fixed tooth attached to the front wall of the casing, a swing jaw whose upper end is pivotally supported by an eccentric shaft supported by the casing, and which is arranged opposite to the fixed tooth so as to be able to move toward and away from the fixed tooth, and a swing jaw attached to the swing jaw. A movable tooth, a toggle block that is tilted toward and away from the lower end of the swinging jaw at the rear of the swinging jaw, a toggle plate interposed between the toggle block and the lower end of the swinging jaw, and a lower end of the movable tooth. a plurality of hydraulic cylinders that move the toggle block to bring it closer to the fixed teeth, a traction rod that is inserted through a bracket attached to the rear lower part of the casing and has one end pivoted to the lower end of the swinging jaw, and the lower end of the swinging jaw. a spring interposed between the bracket and a spring holder provided at the other end of the traction rod to pull the casing backward, and a fracture formed by the fixed tooth and the movable tooth, which are attached to the front lower part of the casing A jaw crusher comprising a damper plate provided with a chamber discharge port that can be closed, and a hydraulic cylinder that opens and closes the damper plate. (2) The jaw crusher according to claim 1, wherein the front edge of the damper plate is pivotally attached to the front lower part of the casing. (3) The jaw crusher according to claim 1, wherein the damper plate is horizontally movably mounted on the front lower part of the casing.