JP2007268367A - Jaw crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact jaw crusher which can obtain large crushing force even when the hydraulic cylinder of a small diameter and is excellent in productivity of crushed products. <P>SOLUTION: The jaw crusher 1 for crushing objects to be crushed fed into a crushing chamber C between a fixed jaw 3 and a swing jaw 4 by a double toggle mechanism 10 provided between a front toggle sheet 6 and a rear toggle sheet 9 and provided with a front toggle plate 11 and a rear toggle plate 12 is configured such that the opposing sides of the front toggle plate 11 and the rear toggle plate 12 constituting the double toggle mechanism 10 are synchronously operated by the hydraulic cylinder 20 whose head side is connected to the back surface side of the swing jaw 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an improvement of a jaw crusher, and more particularly, to a jaw crusher that is compact, can obtain a large crushing force even with a small-diameter hydraulic cylinder, and is excellent in productivity of crushing products.

  The jaw crusher includes a fixed jaw fixed to the frame, and a swing jaw that is disposed to face the fixed jaw. Then, the object to be crushed, such as rocks and concrete trash, placed in the crushing chamber formed between the fixed jaw and the swing jaw, is moved toward and away from the fixed jaw by a driving device. It is crushed by. Conventionally, a mechanical drive device comprising a rotary drive device such as a motor, a flywheel rotated by the rotary drive device, and an eccentric shaft connected to the flywheel and operating the swing jaw has been used. However, in recent years, a jaw crusher that uses a hydraulic cylinder as a driving device has been proposed. As a jaw crusher according to a conventional example using a hydraulic cylinder as a drive device, for example, one having a configuration as described later is known.

The jaw crusher according to Conventional Example 1 is configured as shown in FIG. 5 in a side view showing a state where the jaw crusher is attached to an arm of a power shovel. That is, the jaw crusher 50 according to the conventional example 1 includes a frame 51, and a bracket portion 55 for attaching to the arm of the power shovel and a bucket 56 are provided at a required position of the frame 51.
In the frame 51, a fixed plate (fixed jaw) 52, a movable plate (swing jaw) 53, and a hydraulic cylinder 62 are provided. Further, one end side of the movable plate 53 is attached to an attachment member 59 via a bearing, and is configured to be rotated around the center O of the bearing portion. The tip of the drive rod 62 b of the hydraulic cylinder 62 is pivotally attached to the back surface on the other end side of the movable plate 53.

  Therefore, according to the jaw crusher according to the conventional example 1, when the drive rod 62b of the hydraulic cylinder 62 extends, the movable plate 53 rotates so as to approach the fixed plate 52 around the center O of the bearing portion. . On the other hand, when the drive rod 62b is reduced, the movable plate 53 rotates so as to be separated from the fixed plate 52 around the center O of the bearing portion. As described above, the movable plate 53 repeatedly approaches and separates from the fixed plate 52, so that the object to be crushed in the crushing chamber C is compressed and crushed between the crushing plates 65 and 66 (for example, Patent Documents). 1).

  A jaw crusher according to Conventional Example 2 will be described with reference to FIG. 6 of a longitudinal sectional view of the jaw crusher. That is, the jaw crusher according to the conventional example 2 includes a machine frame (frame) 101 described later. A tooth receiving plate 105 is fixed to a fixed plate (fixed jaw plate) 104 fixed to the machine frame (frame) 101, and a pusher plate 107 opposed to the tooth receiving plate 105 is a movable plate (swing jaw plate). 106 is fixed. Further, horizontal support bases are fixed on both sides of the machine casing 101, and bearings provided at both ends of the support shaft 111 are slidably supported on the horizontal support bases so that the bearings are supported. It is supported so as to be tiltable in a horizontal plane. The receiving pieces 114 and 115 provided on the back surface of the lower edge of the movable platen 106 are supported by the support shaft 111, and the hydraulic cylinder 120 provided in the machine frame 101 is linked to the back surface of the upper edge of the movable platen 106. It is connected via mechanisms 122 and 123.

Therefore, according to the jaw crusher according to the conventional example 2, the movable plate 106 opens and closes with the support shaft 111 as a fulcrum by the expansion and contraction operation of the hydraulic cylinder 120, so that the object 140 to be crushed is a fixed plate 104. The tooth receiving plate 105 and the movable plate 106 are crushed by the tooth pressing plate 107 (see, for example, Patent Document 2).
JP-A-8-150344 JP 2000-140659 A

  By the way, in the case of the jaw crusher according to the conventional example, the swing jaw is operated by directly applying the expansion / contraction force of the hydraulic cylinder to the swing jaw. Therefore, according to the above-described conventional jaw crusher, the crushing force necessary for crushing the object to be crushed in the crushing chamber must be generated by a 100% hydraulic cylinder. Since the generator is required, there is an economic problem that the initial cost and running cost of the jaw crusher increase.

  Further, in the case of the jaw crusher according to the conventional example, the number of operations per time of the swing jaw cannot be increased as in the case of the mechanically driven jaw crusher. Therefore, since the crushing efficiency of the object to be crushed is inferior to the mechanically driven jaw crusher, there has been a strong demand for improving the crushing efficiency of the jaw crusher configured to obtain the crushing force of the object to be crushed by a hydraulic cylinder. .

  Accordingly, an object of the present invention is to provide a jaw crusher that is compact, can obtain a large crushing force even with a small-diameter hydraulic cylinder, and is excellent in productivity of crushed products.

  The present invention has been made in view of the above circumstances, and therefore, in order to solve the above-mentioned problems, the gist of the means adopted by the jaw crusher according to claim 1 of the present invention is to fix the jaws on the front side of the frame. A front toggle seat provided on the lower side of the back side of the swing jaw, and a swing jaw that repeats the movement toward and away from the fixed jaw at a position opposite to the fixed jaw, A rear toggle seat provided in the toggle block on the rear side of the frame and a double toggle mechanism provided between the front toggle seat and the rear toggle seat in the crushing chamber between the fixed jaw and the swing jaw. In the jaw crusher for crushing the object to be crushed, the front toggle plate and the rear toggle plate constituting the double toggle mechanism Opposite sides of the bets is characterized in that made is configured to be actuated synchronously by a hydraulic cylinder whose one end on the rear side is connected to the swing jaw.

  The gist of the means adopted by the jaw crusher according to claim 2 of the present invention is that a fixed jaw is provided on the front side of the frame, and a movement toward and away from the fixed jaw is performed at a position facing the fixed jaw. A swing toggle jaw is provided, a front toggle seat provided on the lower side of the back side of the swing jaw, a rear toggle seat provided on a toggle block on the rear side of the frame, the front toggle seat and the rear toggle. In a jaw crusher for crushing the object to be crushed between the fixed jaw and the swing jaw by a double toggle mechanism provided between the sheets, a front toggle plate constituting the double toggle mechanism; The opposite side of the rear toggle plate is a hydraulic cylinder connected at one end to the rear side of the frame. It is characterized in comprising configured to be the period actuated.

  The gist of the means adopted by the jaw crusher according to claim 3 of the present invention is the jaw crusher according to any one of claims 1 and 2, wherein the hydraulic cylinder includes the front toggle plate and the rear portion. The opposite side of the toggle plate is configured to reciprocate between a front side of the straight line passing through the front toggle sheet and the rear toggle sheet and a range exceeding the straight line. .

  In the jaw crusher according to claim 1 or 2 of the present invention, the opposite side of the front toggle plate and the rear toggle plate constituting the double toggle mechanism is connected at one end to the back side of the swing jaw, or the rear side of the frame The front toggle plate and the rear toggle plate of the double toggle mechanism serve as a booster. Therefore, since the force that is many times the expansion and contraction force of the hydraulic cylinder can be applied to the swing jaw as the crushing force, the object to be crushed put into the crushing chamber formed between the fixed jaw and the swing jaw It can be crushed effectively. Therefore, according to the jaw crusher according to claim 1 or 2 of the present invention, it is not necessary to use a large-diameter hydraulic cylinder and a large-capacity hydraulic generator unlike the conventional jaw crusher. Cost and running cost can be reduced.

  In the jaw crusher according to claim 1 or 2, the rotational force of the motor or the like is transmitted to the front toggle plate and the rear toggle plate constituting the double toggle mechanism via the flywheel, the eccentric shaft, and the pitman arm. There is no need to provide a complicated driving force transmission mechanism such as a hydraulic cylinder. Therefore, according to the jaw crusher according to the first or second aspect of the present invention, the jaw crusher can be made compact, and the cost of the jaw crusher body itself can thereby be reduced.

  Further, in the jaw crusher according to claim 3 of the present invention, the hydraulic cylinder is configured such that the front toggle sheet and the rear toggle sheet are arranged on the opposite sides of the front toggle plate and the rear toggle plate constituting the double toggle mechanism. It is configured to reciprocate between a straight line and a range exceeding the straight line. Therefore, according to the jaw crusher according to claim 3 of the present invention, the crushing force can be applied twice to the swing jaw while the drive rod of the hydraulic cylinder makes one stroke. The effect that the crushing efficiency is significantly improved can be obtained.

  Hereinafter, a jaw crusher according to an embodiment of the present invention will be described with reference to the attached drawings. 1 is a longitudinal sectional view of a jaw crusher according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view showing an assembled state of a hydraulic cylinder and a double toggle mechanism of the jaw crusher according to Embodiment 1 of the present invention. . FIG. 3 is a longitudinal sectional view of a jaw crusher according to Embodiment 2 of the present invention, and FIG. 4 is an enlarged view showing an assembled state of a hydraulic cylinder and a double toggle mechanism of the jaw crusher according to Embodiment 3 of the present invention. .

  A jaw crusher according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2 in the attached drawings. 1 is a jaw crusher 1 according to Embodiment 1 of the present invention, and the jaw crusher 1 includes a frame-like frame 2. A fixed jaw 3 is formed on the front side of the left side of the frame 2 in FIG. A swing jaw 4 to be described later is provided at a position facing the fixed jaw 3 to repeat the movement toward and away from the fixed jaw 3. A moving tooth 4a is provided on the side of the swing jaw 4 facing the fixed jaw 3, a front toggle seat 6 is provided on the lower part on the back side, and the swing jaw 4 is a swing that supports the upper part thereof. The jaw shaft 5 is supported so as to be able to swing about the fulcrum.

  Further, a toggle block support 7 is provided on the right rear side of the frame 1 in FIG. A toggle block 8 is provided on the side of the swing jaw 4 of the toggle block support 7, and a rear toggle seat 9 is provided on the side of the swing jaw 4 of the toggle block 8. Between the front toggle sheet 6 and the rear toggle sheet 9, there is provided a double toggle mechanism 10, which will be described later, whose front ends abut against the front toggle sheet 6 and the rear toggle sheet 9. The double toggle mechanism 10 is configured to be operated synchronously by an expansion / contraction operation of a drive rod of a hydraulic cylinder 20 whose head side is connected to the back side of the swing jaw 4. The toggle block 8 can be moved back and forth with respect to the swing jaw 4 on the toggle block support base 7 in order to adjust the outlet clearance t of the crushed product between the lower portion of the fixed jaw 3 and the lower portion of the swing jaw 4. Is provided.

  The double toggle mechanism 10 includes a front toggle plate 11 and a rear toggle plate 12, and an intermediate toggle support member 13 that engages opposite ends of the front toggle plate 11 and the rear toggle plate 12. Yes. A rod connecting shaft 14 is provided on the upper side of the intermediate toggle support member 13 of the double toggle mechanism 10 having such a configuration, and the head side of the rod connecting shaft 14 is on the back side of the swing jaw 4. The tip of the drive rod of the hydraulic cylinder 20 connected to is connected.

The drive rod of the hydraulic cylinder 20 has a range that allows the front toggle plate 11 and the rear toggle plate 12 to face each other on a sheet passing straight line L _S passing through the front toggle sheet 6 and the rear toggle sheet 9. It is comprised so that it may reciprocate between. In short, the range is between a position that is convex on the upper side of the double toggle mechanism 10 and a position that is convex on the lower side. Contrary to the above, the hydraulic cylinder 20 is the same even if the tip of the drive rod is connected to the back side of the swing jaw 4 and the head side is connected to the rod connecting shaft 14 of the intermediate toggle support member 13. The function of can be demonstrated.

By the way, in the case of the first embodiment, as described above, the drive rod of the hydraulic cylinder 20 has a sheet passing straight line on the opposite side of the front toggle plate 11 and the rear toggle plate 12 of the double toggle mechanism 10. It is configured to reciprocate between a range through which L _S passes. However, the present invention is not limited to such a configuration. For example, even if the front toggle plate 11 and the rear toggle plate 12 are within a range of positions where the upper side is convex from the position where the upper side is convex, the upper side is convex. A large crushing force can be applied to the swing jaw 4 even within the range of the position that is in a straight line. In the case of the first embodiment, a known urging means for urging the swing jaw 4 in the rear direction is provided and used, which includes a tension rod and a compression spring (not shown).

Hereinafter, the operation mode of the jaw crusher according to the first embodiment of the present invention configured as described above will be described. In the jaw crusher 1 according to the first exemplary embodiment of the present invention, as described above, the opposite side of the front toggle plate 11 and the rear toggle plate 12 constituting the double toggle mechanism 10 is arranged on the intermediate toggle support member by the hydraulic cylinder 20. 13 through, since it is configured to be reciprocally operate between a range exceeding sheet pass straight L _S, and the front toggle plate 11 and the rear toggle plate 12 becomes booster.

For example, the front toggle plate 11 and the rear toggle plate 12 have the same length, the angle between the toggle plate and the sheet passing straight line L _S is θ °, and the expansion / contraction force of the hydraulic cylinder 20 is P. Assume. In this case, the crushing force F acting on the swing jaw 4 via the front toggle sheet 11 is F = P / 2 · tan (90 ° −θ °), so the toggle plate and the sheet passing straight line L _S As the angle formed becomes smaller, the crushing force F acting on the swing jaw 4 increases.

  Therefore, a force many times the expansion / contraction force of the hydraulic cylinder 20 can be applied to the swing jaw 4 as the crushing force F, so that the crushing chamber C formed between the fixed jaw 3 and the swing jaw 4 can The inputted material to be crushed can be crushed effectively. Therefore, according to the jaw crusher 1 according to the first embodiment of the present invention, it is not necessary to use a large-diameter hydraulic cylinder and a large-capacity hydraulic pressure generator as in the conventional jaw crusher. An excellent economic effect that the cost and running cost can be reduced can be obtained.

  In the jaw crusher 1 according to the first embodiment of the present invention, the rotational force of the motor or the like is transmitted to the front toggle plate and the rear toggle plate constituting the double toggle mechanism via the flywheel, the eccentric shaft, and the pitman arm. There is no need to provide such a complicated driving force transmission mechanism, and only the hydraulic cylinder 20 is provided as described above. Therefore, according to the jaw crusher 1 according to the first embodiment of the present invention, the jaw crusher can be made compact, and further, the cost of the jaw crusher body itself can be further reduced.

Further, in the jaw crusher 1 according to the first embodiment of the present invention, the hydraulic cylinder 20 has the front toggle sheet 6 and the rear portion on the opposite side of the front toggle plate 11 and the rear toggle plate 12 as described above. The sheet passing straight line L _S passing through the toggle sheet 9 is configured to reciprocate between ranges. Therefore, according to the jaw crusher 1 according to the first embodiment of the present invention, the crushing force F can be applied twice to the swing jaw 4 while the drive rod of the hydraulic cylinder 20 makes one stroke. The effect of improving the crushing efficiency that the crushing efficiency of the object to be crushed can be greatly improved.

  A jaw crusher according to Embodiment 2 of the present invention will be described with reference to FIG. 3 of the accompanying drawings. However, the difference between the second embodiment and the first embodiment lies in the difference in the pivoting position on the head side of the hydraulic cylinder, and the rest of the configuration is exactly the same. The different configurations will be described below.

In the case of the jaw crusher 1 according to the second embodiment, as well understood in the comparison between FIG. 1 and FIG. 3, the front toggle plate 11 and the rear toggle plate 12 constituting the double toggle mechanism 10 The opposite side is reciprocated between a range through which the sheet passing straight line L _S passing through the front toggle seat 11 and the rear toggle seat 12 passes by the hydraulic cylinder 20 having the head side connected to the rear side of the frame 2. It is configured. Therefore, according to the jaw crusher 1 according to the second embodiment of the present invention, the double toggle mechanism 10 causes the swing jaw 4 to act as the crushing force F many times the expansion / contraction force of the drive rod of the hydraulic cylinder 20. Therefore, the same effect as the jaw crusher 1 according to the first embodiment can be obtained.

  A jaw crusher according to Embodiment 3 of the present invention will be described with reference to FIG. 4 of the accompanying drawings. However, the difference between the third embodiment and the first or second embodiment is the difference in the configuration of the double toggle mechanism 10, and the other components are exactly the same. The different configurations will be described below.

  In the case of the jaw crusher according to the third embodiment, the opposite side ends of the rear toggle plate 12 of the front toggle plate 11 of the double toggle mechanism 10 are well understood in the comparison between FIG. 2 and FIG. The intermediate part toggle support member 13 is integrally provided in the part. Therefore, according to the jaw crusher according to the third embodiment of the present invention, the double toggle mechanism 10 can cause the swing jaw to act as a crushing force many times the expansion / contraction force of the drive rod of the hydraulic cylinder 20. Thus, the same effect as the jaw crusher according to the first embodiment can be obtained.

  Note that the jaw crushers according to the first to third embodiments are merely examples of the present invention. Therefore, the configuration according to the embodiment of the present invention is not limited by the configuration according to the above-described embodiment, and design changes and the like can be freely made without departing from the technical idea of the present invention.

It is a longitudinal cross-sectional view of the jaw crusher which concerns on Embodiment 1 of this invention. It is an enlarged view which shows the assembly state of the hydraulic cylinder and double toggle mechanism of the jaw crusher which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the jaw crusher which concerns on Embodiment 2 of this invention. It is an enlarged view which shows the assembly state of the hydraulic cylinder and double toggle mechanism of the jaw crusher which concerns on Embodiment 3 of this invention. It is a side view of the jaw crusher which concerns on the prior art example 1 and shows the state attached to the arm of the power shovel. It is a longitudinal cross-sectional view of a jaw crusher according to Conventional Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Jaw crusher, 2 ... Frame, 3 ... Fixed jaw, 3a ... Tooth receiving, 4 ... Swing jaw, 4a ... Moving tooth, 5 ... Swing jaw shaft, 6 ... Front toggle seat, 7 ... Toggle block support base, 8 ... Toggle block, 9 ... Rear toggle sheet, 10 ... Double toggle mechanism, 11 ... Front toggle plate, 12 ... Rear toggle plate, 13 ... Intermediate toggle support member, 14 ... Rod connecting shaft, 20 ... Hydraulic cylinder C ... Crush Chamber L _S ... Straight line passing through t t ... Outlet clearance of crushed product

Claims (3)

  A fixed jaw is provided on the front side of the frame, and a swing jaw that repeatedly moves toward and away from the fixed jaw is provided at a position opposite to the fixed jaw, and is provided below the back side of the swing jaw. The front and rear toggle seats, the rear toggle seat provided on the toggle block on the rear side of the frame, and the double toggle mechanism provided between the front toggle seat and the rear toggle seat, the fixed jaw and the swing jaw In the jaw crusher for crushing the object to be crushed between the front and rear toggle plates, the opposite side of the front toggle plate and the rear toggle plate constituting the double toggle mechanism is on the back side of the swing jaw. Jaw configured to be operated synchronously by connected hydraulic cylinders Lash.   A fixed jaw is provided on the front side of the frame, and a swing jaw that repeatedly moves toward and away from the fixed jaw is provided at a position opposite to the fixed jaw, and is provided below the back side of the swing jaw. The front and rear toggle seats, the rear toggle seat provided on the toggle block on the rear side of the frame, and the double toggle mechanism provided between the front toggle seat and the rear toggle seat, the fixed jaw and the swing jaw In the jaw crusher that crushes the material to be crushed between the front toggle plate and the rear toggle plate that constitute the double toggle mechanism, the opposite side of the front toggle plate and the rear toggle plate are connected to the rear side of the frame. The jaw clutch is configured to be operated synchronously by a hydraulic cylinder. Turbocharger.   The hydraulic cylinder is configured to reciprocate the opposite side of the front toggle plate and the rear toggle plate between a front side of the straight line passing through the front toggle sheet and the rear toggle sheet and a range exceeding the straight line. The jaw crusher according to claim 1, wherein the jaw crusher is configured.

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