JPH09276724A - Jaw crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jaw crusher in which performing the releasing and the giving work of tensile force of a tension rod by manual in adjusting the outlet clearance is not required and also the repair and the replacement frequency of the contact surface of a toggle block and a wedge that has gotten rough are lessened. SOLUTION: A tension spring 21 for giving a tension rod 9 tensive force is compressed to the side opposite to a swing jaw 6 of a back frame 4 of a jaw crusher 1, and a tension spring compressing cylinder 23 for releasing compressive force is provided. A toggle block 12 is moved to the swing jaw 6 side by a clearance adjusting cylinder 13 installed on the side opposite to the swing jaw 6 of the back frame 4. A wedge actuating cylinder 17 for inserting a wedge 15 into a clearance produced between an inclined surface 12a of the toggle block 12 and the back frame 4 is fitted to a cylinder support 16 provided on a back frame horizontal rib 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved jaw crusher, and more particularly, to easily adjust an outlet clearance of a crushed product formed below a fixed jaw plate and a swing jaw plate. Belongs to the technical field of jaw crusher.

[0002]

As is well known, in the jaw crusher, the crushing teeth of the fixed jaw plate and the crushing teeth of the swing jaw plate are gradually worn away by the continuous crushing work of the crushed objects such as rocks, and the lower parts of these plates are worn. The exit gap of the crushed product formed on the side expands. If the exit gap of the crushed product is enlarged, it is not possible to obtain a crushed product having a particle size within a predetermined particle size range, so the exit gap adjusting device re-adjusts the exit gap of the crushed product. Conventionally, such an exit gap adjusting device is usually manually performed.

That is, the lower side of the swing jaw is manually moved to the fixed jaw plate side to insert a shim into the empty space, and the outlet of the crushed product formed below the fixed jaw plate and the swing jaw plate. I was adjusting the gap. With a manual outlet gap adjusting device, for example, when two workers perform the outlet gap adjusting work, it takes about 2 to 3 hours, and it is possible to realize an outlet gap adjusting device capable of performing the outlet gap adjusting work with higher efficiency. Was wanted. In consideration of such a situation, an outlet gap adjusting device capable of automatically adjusting the outlet gap has been considered.
What is disclosed in Japanese Patent No. 9436 is known.

Hereinafter, a jaw crusher equipped with a "horizontal automatic clearance adjusting device" according to a conventional example disclosed in the above publication is shown in a vertical sectional side view of FIG. 10 (a) and FIG. 10 (a).
Referring to FIG. 10B which is a sectional view taken along line CC of FIG. 10, reference numeral 51 is a well-known single toggle type jaw crusher. That is, this jaw crusher 5
1 includes a swing jaw 54 that is swung so as to move toward and away from a fixed jaw 53 by the rotation of an eccentric shaft 55 provided on a frame 52. The lower side of the swing jaw 54 is a toggle described later. The toggle plate 56 is supported by the other end of the toggle plate 56, one end of which is supported by the block 57. The toggle block 57 includes a cross member 58 fixed to the frame 52 of the jaw crusher 51.
It is mounted so that it can slide back and forth.

A pair of left and right symmetrical wedges 59, 59 which are movable in the left-right direction are attached to the rear portion of the cross member 58, and the front and rear slopes of these wedges 59, 59 are the rear sides of the toggle block 57. It is slidably in contact with the bilaterally symmetrical slope formed on the. And these both wedges 5
A screw jack mechanism 60 is provided, which includes an electric motor M that moves the motors 9 and 59 closer to and away from each other, and a screw shaft 60a that is reciprocally rotated by the motor M. Reference numeral 61 is a tension rod, and reference numeral 62
Is a tension spring that applies a tensile force to the tension rod 61 to pull the swing jaw 54 toward the cross member 56 side.

Therefore, when the screw shaft 60a of the screw jack mechanism 60 is rotated to bring the wedges 59, 59 closer to each other, the toggle block 57 slides forward, and the lower end rear portion of the swing jaw 54 is moved forward by the toggle plate 56. Since it is pushed to approach the fixed jaw 53, the space between the lower ends of the fixed jaw 53 and the swing jaw 54 is narrowed and the outlet gap is adjusted.

[0007]

According to the "horizontal automatic clearance adjusting device" of the jaw crusher according to the above-mentioned conventional example, the exit clearance is adjusted only by rotating the screw shaft 60a of the screw jack mechanism 60 by the electric motor M. Therefore, it is excellent in that the exit gap can be adjusted in a much shorter time than the conventional manual operation for adjusting the exit gap.

However, as is well understood from FIG. 10 (a), before adjusting the clearance which is the outlet of the crushed product, the nut 63 for compressing the tension spring 62 to apply the tension force to the tension rod 61. And the lock nut 63 'are loosened to release the tension force applied to the tension rod 61 by the tension spring 62, and after the clearance adjustment is completed, the tension spring 62 has a strong spring force to apply the tension force to the tension rod 61. In addition to the heavy work of tightening the nut 63 against, the wedges 59, 59 are slid in order to slide the wedges 59, 59 and the toggle block 57 in contact with each other.
The contact surface between the 59 and the toggle block 57 is likely to be rough, and the contact surface may be repaired or the wedges 59, 59 and the toggle block 57 may be replaced more frequently.

Therefore, an object of the present invention is to eliminate the manual work for releasing the tensile force and applying the tensile force to the tension rod, and to roughen the contact surface between the wedge and the toggle block. The purpose is to provide a jaw crusher that can reliably prevent the above.

[0010]

In order to solve the above problems, the means adopted by the jaw crusher according to claim 1 of the present invention comprises a fixed jaw plate and a swing jaw plate on the side of the fixed jaw plate. Swing jaws that repeat movements toward and away from the fixed jaw plates, and the lower side of the swing jaws for adjusting the exit clearance of the crushed product formed under the fixed jaw plates and the swing jaw plates A toggle block attached to a back frame that moves to the fixed jaw plate side via a toggle plate, and a gap adjustment that is arranged on the opposite swing jaw side of the back frame and moves the toggle block to the swing jaw side. Remove the wedge between the cylinder and the back frame and toggle block. And pointing to wedge actuating cylinder,
A tension spring that has one end abutting on the side opposite to the swing jaw of the back frame and a pusher on the other end, and applies tension to a tension rod that is connected to the swing jaw via a rod connecting pin. When,
One end side is pivotally attached to the side opposite to the swing jaw of the back frame, and a tension spring compression cylinder is provided for pressing the pressing plate on the other end side of the tension spring via the pressure frame and releasing the pressing force. Is characterized by.

According to a second aspect of the present invention, the means adopted by the jaw crusher is the jaw crusher according to the first aspect, and is a guide for reciprocally guiding the pressure frame toward and away from the back frame. A guide frame having a portion is provided on the side opposite to the swing jaw of the back frame.

The means adopted by the jaw crusher according to claim 3 of the present invention is the jaw crusher according to claim 2, wherein the guide portion of the guide frame is provided with a low friction member made of removable resin. Is characterized by.

The means adopted by the jaw crusher according to the fourth aspect of the present invention is the jaw crusher according to the first, second or third aspect, wherein a spring washer is attached to the pusher plate and the spring washer side of the pressure frame is provided. , A round bar for pressing the spring washer is provided.

According to a fifth aspect of the present invention, the means adopted by the jaw crusher is the jaw crusher according to the fourth aspect, wherein the contact surface of the round bar of the spring washer is concave.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A jaw crusher according to an embodiment of the present invention will now be described with reference to FIG.
2 of the sectional view taken along the line AA in FIG. 1 and FIG. 3 of the sectional view taken along the line BB of FIG. 1 (the upper side shows the compressed state of the tension spring, and the lower side shows the released state of the compressive force of the tension spring). 4) and FIG. 9 of the procedure diagram for adjusting the exit clearance of the jaw crusher.

Reference numeral 1 shown in FIG. 1 is a jaw crusher. In this jaw crusher 1, a fixed jaw plate 3 is vertically fixed to a front frame 2 with the crushing teeth 3a facing the front frame 2 side. . Further, a swing in which the crushing tooth 7a is directed toward the fixed jaw plate 3 side, which repeats a motion of approaching and separating from the fixed jaw plate 3 by the rotation of the eccentric shaft 8 supported by the side frame 2 '. A swing jaw 6 having a jaw plate 7 fixed thereto is provided.

On the surface of the back frame 4 on the side opposite to the swing jaw plate 7 of the swing jaw 6 on the side of the swing jaw 6 is a back constituting a part of an outlet clearance adjusting device 10 to be described later with a predetermined interval in the vertical direction. Frame horizontal ribs 11 and 11 'are fixed, and a tension rod 9 which penetrates the back frame 4 and can move in the longitudinal direction is provided at a lower position of the lower back frame horizontal rib 11' (shown in FIG. 3). Are provided in a pair as described above.) Is connected to the lower part of the swing jaw 6 on the side opposite to the swing jaw plate 7 via a pin. The tension rod 9,
A pusher 22 is attached to the rear end of each of the 9 and a tension spring 21 is interposed between the back frame 4 and the pusher 22.

On the side opposite to the swing jaw 6 of the back frame 4, and on the pair of tension springs 21,
21 between these tension springs 21 and 21.
A tension spring compression cylinder 23, which will be described later, is provided for compressing and releasing the compression force. Back frame horizontal ribs 11 and 11 ′ for supporting the back frame 4 are provided at the tips of the rods of the tension compression cylinder 23.
A pair of tension springs are guided by guide grooves 5a provided on both sides in the width direction of the guide frame 5 projecting rearward of the guide frame 5 and can move in the front-rear direction of a direction approaching the swing jaw 6 and a direction separating from the swing jaw 6. A pressure frame 24 is connected to compress the 21, 21 via the push plate 22.

That is, the pair of tension springs 21 and 21 can be uniformly compressed by guiding the pressure frame 25 through the guide groove 5a. A low friction member 5b made of resin, that is, nylon, is detachably attached to the guide groove 5a by a mechanical fastening means such as a flat head bolt. As a result, when the guide surface becomes rough, the repair of the guide groove 5a is completed only by replacing the low-friction member 5b, and the repair required time can be shortened.

Further, a spring washer 22a having a concave contact surface is attached to the pressure frame 24 side of the pusher 22, and a contact portion of the pressure frame 24 to the spring washer contact surface is attached. A round pressing body 24a made of a round bar is provided. Therefore, even if the tension spring 21 is inclined, the tension spring 21 can be accurately compressed.

Next, the structure of the outlet clearance adjusting device 10 will be described. Above the tension rod 9 on the surface of the back frame 4 on the swing jaw 6 side, the back frame 4 is provided.
The back frame horizontal rib 1 having the inclined surface 12a on the side
There is provided a toggle block 12 which is moved to the swing jaw 6 side by the extension of the rod of the clearance adjusting cylinder 13 which is held horizontally between 1 and 11 '. The movement of the toggle block 12 is transmitted to a position above the connecting position of the tension rod 9 of the swing jaw 6 via the toggle plate 14 to move the lower side of the swing jaw 6 toward the fixed jaw plate 3. Is configured.

A wedge 15 having an acute-angled portion directed downward is interposed between the inclined surface 12a of the toggle block 12 and the surface of the back frame 4 on the swing jaw 6 side. As shown in FIG. 2, the wedge 15 is provided with a cutout portion 15a that opens upward on the thick portion side. A pair of detachable pin fittings 19, 19 for connecting a connecting pin 18 provided at the tip of a rod of a wedge actuating cylinder 17, which will be described later, to the wedge 15 is provided on the inner surfaces of the notch 15a which face each other. Is installed.

As shown in FIG. 1, the wedge actuating cylinder 17 is attached to a cylinder support 16 which is fixed on the upper back frame horizontal rib 11. The cylinder support 16 is configured to rotate about a hinge pin so that the wedge operating cylinder 17 in the vertical state inclines rearward. When the wedge operating cylinder 17 is in the vertical state, the cylinder support 16 is rotated. It is fixed by a detachable support fixing bracket 20. That is, the wedge operating cylinder 1
When 7 is maintained in the vertical state, the connecting pin 18 provided at the tip of the rod of the wedge actuating cylinder 17
Is connected to the wedge 15 by means of pin mounting brackets 19, 19, and when the wedge operating cylinder 17 is tilted, the wedge operating cylinder 17 and the wedge 15 are separated by removing the pin mounting brackets 19, 19. .

Hereinafter, the jaw crusher 1 having the above structure will be described.
The operation mode of the above will be described with reference to FIGS. That is, before adjusting the outlet clearance t of the jaw crusher 1, as shown in FIG. 4, the rod of the clearance adjusting cylinder 13 is contracted, while the rod of the tension spring compression cylinder 23 is expanded, so that the tension rod 9 A tensile force is applied to the tension spring 21 by the spring force of the tension spring 21.

By continuing the crushing of the crushed object such as rock by the jaw crusher 1 in the state shown in FIG.
When the crushing teeth 3a of the fixed jaw plate 3 and the crushing teeth 7a of the swing jaw plate 7 are worn, the exit gap t, which is the exit of the crushed product formed below the fixed jaw plate 3 and the swing jaw plate 7, becomes wider. The outlet clearance t of the jaw crusher 1 is adjusted to a predetermined distance. When adjusting the outlet clearance t, the rod of the tension spring compression cylinder 23 is contracted as shown in FIG.
The tension spring 21 is compressed via the pressure frame 24, the round pressing body 24a, the spring washer 22a, and the pusher 22 to release the tension force applied to the tension rod 9 by the tension spring 21.

When the tension force on the tension rod 9 is released by the compression of the tension spring 21, as shown in FIG.
As shown in FIG. 5, the rod of the clearance adjusting cylinder 13 is extended to toggle the toggle block 12 and toggle bar so that the outlet clearance t between the lower side of the fixed jaw plate 3 and the lower side of the swing jaw plate 7 has a predetermined dimension. The lower side of the swing jaw 6 is pushed and moved via the plate 14. As a result, a gap is created between the inclined surface 12a of the toggle block 12 and the inclined surface of the wedge.

When the outlet gap t reaches a predetermined size due to the extension of the rod of the gap adjusting cylinder 13, the gap formed between the inclined surface 12a of the toggle block 12 and the inclined surface of the wedge 15 is shown in FIG. Thus, the rod of the wedge actuating cylinder 17 is extended to lower the wedge 15 until the inclined surface of the wedge 15 contacts the inclined surface 12a of the toggle block 12.

The wedge 15 descends and the wedge 1
When the inclined surface of No. 5 contacts the inclined surface 12a of the toggle block 12, the rod of the clearance adjusting cylinder 13 is contracted to pull the toggle block 12 toward the wedge 15 side as shown in FIG.
Press and fix. Then, as shown in FIG. 9, when the rod of the tension spring compression cylinder 23 is extended to release the compression force of the tension spring 21,
The tension force by the spring force of the tension spring 21 acts on the tension rod 9, and the jaw crusher 1 is restored to the state where it can be restarted.

In this way, the tension force can be released and applied to the tension rod 9 simply by expanding and contracting the rod of the tension spring compression cylinder 23.
Compared to the conventional example that requires the nut loosening work and the tightening work, the work of releasing and applying the tensile force to the tension rod becomes extremely easy, and can be completed in an extremely short time.

When adjusting the outlet clearance t, the wedge 1 is actuated by the operation of the wedge actuating cylinder 17 between the back frame 4 and the inclined surface 12a of the toggle block 12.
5 and plug back frame 4 and toggle block 12
It is only necessary to fill the gap between the inclined surface 12a of the toggle block 12 and the slant surface 12a of the toggle block 12 and the wedge 15 because the wedge block and the toggle block are not slid in contact with each other. The surface does not become rough, and the frequency of repairing the contact surface and replacing the toggle block 12 with the wedge 15 is reduced.

In the above description, the case where the technical idea of the present invention is applied to the single toggle type jaw crusher has been described. However, the technical idea of the present invention is applied to the double toggle type jaw crusher having a well-known configuration. However, the scope of the technical idea of the present invention is not limited by the above embodiment.

[0032]

As described in detail above, claim 1 of the present invention
According to the jaw crusher according to any one of claims 1 to 5, the tension force can be released and applied to the tension rod simply by expanding and contracting the rod of the tension spring compression cylinder. Therefore, the nut loosening work and tightening work are required in the conventional example. Compared with the above, the work of releasing and applying the tensile force to the tension rod can be performed very easily, and furthermore, the work can be completed within an extremely short time. Also, when adjusting the outlet clearance, the wedge block and the toggle block are not slid in contact with each other as in the past, but only a wedge is inserted between the back frame and the toggle block. The slanted surface and the slanted surface of the wedge do not become rough, and there is an extremely excellent effect that the contact surface is repaired and the frequency of replacement of the toggle block with the wedge is reduced.

[Brief description of drawings]

FIG. 1 is a partially omitted side sectional view of a jaw crusher according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is an explanatory diagram of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 6 is an explanatory view of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of an exit gap adjusting procedure according to the embodiment of the present invention.

FIG. 10 relates to a conventional example, and FIG. 10a is a vertical sectional side view of a jaw crusher equipped with a “horizontal automatic gap adjusting device”;
0 (b) is a sectional view taken along the line CC of FIG. 10 (a).

[Explanation of symbols]

1 ... Jaw crusher, 2 ... Front frame, 2 '...
Side frame, 3 ... Fixed jaw plate, 3a ... Fracturing tooth, 4 ... Back frame, 5 ... Guide frame, 5a ... Guide groove, 5b ... Low friction member, 6 ... Swing jaw, 7 ... Swing jaw plate, 7a ... Fracturing tooth , 8 ... Eccentric shaft, 9
… Tension rod, 10… Exit gap setting device, 11…
Back frame horizontal rib (upper side), 11 '... Back frame horizontal rib (lower side), 12 ... Toggle block, 12a
... inclined surface, 13 ... clearance adjusting cylinder, 14 ... toggle plate, 15 ... wedge, 15a ... notch, 16 ... cylinder support, 17 ... wedge operating cylinder, 18 ... connecting pin, 19 ... pin mounting metal fitting, 20 ... support fixing Metal fittings,
21 ... Tension spring, 22 ... Pusher, 22a ... Spring washer, 23 ... Tension spring compression cylinder, 24 ... Pressure frame, 24a ... Round pressing body, t ... Exit gap.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Wataru Taga 2-3-1, Niihama, Arai-cho, Takasago-shi, Hyogo Prefecture Takasago Works, Kobe Steel, Ltd. (72) Hideyuki Inayoshi 2-chome, Niihama, Arai-cho, Takasago-shi, Hyogo No. 1 Inside Takasago Works, Kobe Steel, Ltd.

Claims (5)

[Claims] 1. A swing jaw that includes a fixed jaw plate and a swing jaw plate on the side of the fixed jaw plate, and repeats a motion of moving toward and away from the fixed jaw plate, and below the fixed jaw plate and the swing jaw plate. A toggle block attached to a back frame for moving the lower side of the swing jaw to a fixed jaw plate side through a toggle plate in order to adjust the outlet clearance of the crushed product formed on the side, and the back frame. The anti-swing of the back frame, a gap adjusting cylinder that is arranged on the side opposite to the swing jaw and that moves the toggle block to the swing jaw side, a wedge actuating cylinder that inserts and removes a wedge between the back frame and the toggle block. While one end is in contact with the jaw side A pusher is arranged on the other end side, and a tension spring that applies tension to a tension rod that is connected to the swing jaw via a rod connecting pin, and one end side is pivotally attached to the back swing jaw side of the back frame. A jaw crusher comprising: a tension spring compression cylinder that presses a pressing plate on the other end side of the tension spring via a pressure frame and releases the pressing force. 2. A guide frame having a guide portion that guides the pressure frame so as to reciprocate toward and away from the back frame is provided on the non-swing jaw side of the back frame. Item 1
The jaw crusher described in. 3. The jaw crusher according to claim 2, wherein the guide portion of the guide frame is provided with a low friction member made of a detachable resin. 4. The jaw crusher according to claim 1, wherein a spring washer is attached to the push plate, and a round bar for pressing the spring washer is provided on the spring washer side of the pressure frame. . 5. The jaw crusher according to claim 4, wherein the contact surface of the round bar of the spring washer is concave.