JPS60187350A - Rock crushing apparatus - 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 The present invention relates to a rock crushing device for crushing rocks to produce gravel, and its purpose is to produce gravel from quarrying to gravel all at once with one device.

Our goal is to provide an epoch-making crushing device that can produce

Conventionally, when producing gravel, which is mainly mixed with cement and used as aggregate for concrete, from quarrying, multiple units of the same type of equipment have been used, which has been extremely inefficient and uneconomical.

In other words, this type of conventional crushing device called a cone flanochier has a crushing member with a V-shaped cross section corresponding to the outer wall, which is placed inside a cylindrical outer wall whose diameter becomes larger toward the bottom. A main shaft is fixed to the upper part of the shaft so that it can swing freely, and an eccentric wheel is fitted to the lower part of the main shaft with its center of rotation offset from the center of the shaft. By transmitting and rotationally driving the rotation of the motor using a bevel gear mechanism, the lower part of the shaft is rotated around the rotation center of the eccentric wheel, and the gap between the outer wall body and the crushing member is adjusted to the swinging of the shaft. The structure is changed accordingly, and the rock thrown into the gap is crushed by being pressed against the outer wall by a crushing member.

Therefore, since the structure is such that the shaft having the crushing member attached to the upper part is oscillated by rotating the lower part thereof, the change in the oscillation of the crushing member is not so large. Therefore, after preparing multiple devices that have the same configuration as above but differ only in the gap between the outer wall and the crushing member, for example, the first device crushes the rock in half, and the crushed stone is transferred to the second device. Since the required gravel is created through a process of cutting the gravel in half, it is not only inefficient and expensive, but also requires a large amount of space to install multiple devices.

This invention was made in view of the above-mentioned conventional problems.
The space for rock crushing formed by the gap between the outer wall and the crushing member is gradually narrowed downward from the top to the bottom, and the crushing member is supported at its lower end by a spherical shaft, and its upper end is supported by a spherical shaft. It is an object of the present invention to provide a rock crushing device capable of obtaining gravel of a desired particle size with one device by having a structure in which the part is installed in a rotating state so that the input rock is gradually crushed into smaller pieces while falling. That is.

Hereinafter, one embodiment of the present invention will be explained in detail based on the drawings.

In Fig. 1, 1, 2.3 are upper frames, respectively;
- An intermediate frame and a lower frame are shown, and a machine frame is constructed on the machine base 4 by these frames 1, 2.3. A cylindrical main outer wall shell 5 whose diameter gradually decreases from the top to the bottom is fixed to this machine frame, and the main outer wall shell 5 abuts against the lower and upper circumferential surfaces of the main outer wall shell 5 and moves downward. A lower outer wall liner 6 with a larger diameter and a top cell liner 7 with a larger diameter upward are arranged in series, and these form the outer wall into which rocks are to be charged. Reference numeral 8 indicates an oil jack installed in the center of the machine base 4. A spherical shaft 9 is placed vertically on the oil jack 8, and is supported by a bearing member 11 fitted into a guide tube 10 so as to be movable up and down. The spherical shaft 9 is held in a vertical state, and the spherical shaft 9 is held in a predetermined position unless a load exceeding a predetermined value is applied to the spherical shaft 9, and when a load exceeding a predetermined value is applied, the spherical shaft 9 is lowered, When the load is removed, the spherical shaft 9 is raised and returned to its original position. Reference numeral 12 denotes a crushing member supported by a spherical shaft 9, which has a spherical surface on the lower end surface of the core shaft body 14, which has a cylindrical shape whose diameter gradually decreases toward the bottom and has a small diameter shaft portion 13 extending from the top. A spherical bearing metal 15 that is slidably crowned on the shaft 9 is fitted and fixed thereto, and a cone cape 16 having a cylindrical body having a V-shaped cross section is fitted and fixed on the core shaft 14, and this crushing member An annular crushing space 17 that gradually narrows downward is formed between the twelve cone capes 16, the main outer wall shell 5 for the outer wall, and the lower outer wall 6.

Reference numeral 18 denotes an eccentric ring, which is mounted on the small diameter shaft part 13 by aligning the center line C2 of the cavity part 19, which is offset with respect to the rotation center CI, with the center line of the small diameter shaft part 13, and is attached to the head bearing 20. Head bearing receiver 21. Coloring 22
．． Thrust cover 23. Main bearing 24. It is rotatably held in the upper frame 1 by a bearing sleeve 25 or the like. At the top of this eccentric wheel 18 is a mounting shaft 2.
6 protrudes, and a V pulley 27 is fitted onto this mounting shaft 26, and this pulley 27 and motor base 28
A pulley (not shown) attached to a motor (not shown) installed inside the
The rotation of the motor is transmitted by a belt (not shown) wound around and stretched around a belt (not shown) to drive the motor. Then, the small diameter shaft part 13 and the eccentric ring 18 are engaged with each other by a self-aligning mechanism in which an elastically deformable spherical bearing 29 is inserted between the small diameter shaft part 13 and the eccentric ring I8. is rotated around the rotation center 01 of the eccentric wheel.

Reference numeral 30 denotes a hydraulic transmission pipe connected to a hydraulic pump (not shown), and is communicated with an oil passage 31 bored through the spherical shaft 9 along the center line. In addition, the spherical bearing metal I5 has an oil passage 32 that penetrates from the sliding surface with the spherical shaft 9 to the side surface.
radial oil grooves 33 are formed on the fitting surfaces of the core shaft body 14 and the small diameter shaft portion 13.
, an oil passage 34 is drilled that ascends along the center line from the fitting surface with the spherical bearing metal 15 and extends from the center of the small diameter shaft portion 13 to the joint surface with the spherical bearing 29. An oil circulation pipe 35 is provided from the joint surface with the oil passage 311 to the hydraulic pump.
Oil groove 33. Oil passage 34. Joint surface between small diameter shaft portion 13 and spherical bearing 29 8 Oil circulation pipe 35. A hydraulic circuit is configured to circulate a hydraulic pump, and this hydraulic pressure causes the spherical bearing metal 15 to be slightly floated from the spherical shaft 9, so that a small gap is always created, so that the crushing member 12 can be smoothly rocked. It is now able to move. In the figure, numeral 36 represents an oil seal, numeral 37 represents a belt cover, and numeral 38 represents a dust cover.

In the embodiment device configured as described above, when the motor is driven to rotate, this rotation is transmitted by the belt and the eccentric wheel 18 is rotated. In such a case, since the center line C2 of the crushing member 12 is deviated from the rotation center C1 of the eccentric wheel 18, as shown in FIG.
As shown in a), (b), and (C), the small diameter shaft portion 13 is rotated around the rotation center 01 of the eccentric wheel 18, and the crushing member 12
The crushing space 17 changes in accordance with the rocking of the crushing member 12, as its lower end slides on the spherical shaft 9, causing it to swing greatly. Therefore, when rocks are thrown into the crushing space 17 as shown by the dashed line in FIG. 1, the rocks are pressed against the main outer wall shell 5 and the lower outer wall shell 6 by the cone cape 16 and fall while being crushed. Here, the crushing space 17 gradually narrows from above to below, the swinging range of the crushing member 12 is larger than that of conventional devices of this type, and the lower end of the cone cape 16 is connected to the lower outer wall. Since it is connected to the grain 6, the required gravel can be obtained all at once by inputting ordinary quarried stone. Further, since the crushing member 12 is constantly floated from the spherical shaft 9 by hydraulic pressure and this oil is used for lubrication between the small diameter shaft portion 13 and the spherical bearing 29, the crushing member 12 swings extremely smoothly. It will be held in Further, when crushed stones are clogged between the lower end of the cone cape 16 and the lower outer wall 6 and a large load is applied to the spherical shaft 9, the oil jack 8 detects this and lowers the spherical shaft 9. As a result, the crushing member 12 placed on the spherical shaft 9 is also lowered, and the cone cape 1
6 is detached from the lower outer wall 6 and the clogged crushed stone is dropped, thereby relieving the large load, and the oil jack 8 raises the spherical shaft 9 to its original position again and holds it there. This prevents equipment from being damaged or malfunctioning due to heavy loads.

As described above, according to the rock crushing device of the present invention, the lower end of the crushing member is supported by the spherical shaft, and the upper end is rotated by the eccentric shaft to make the whole rock. The swing range is much larger than that of
An annular rock crushing space formed in the gap between the outer wall and the crushing member can be provided over the entire top and bottom so that it gradually narrows from the top downwards. It is possible to obtain gravel of a certain particle size, and since only one device is needed, the cost of producing gravel can be significantly reduced.It is also extremely efficient, and does not require a large space to install the device. This is an epoch-making product that can have practical effects. Furthermore, unlike conventional devices in which the main shaft is suspended, the lower end surface is supported by a spherical shaft, so it has the advantage of being excellent in robustness and being able to obtain a powerful crushing force.

[Brief explanation of the drawing]

The drawing shows one embodiment of the rock crushing device of the present invention, and shows the first embodiment of the rock crushing device of the present invention.
The figure is a longitudinal sectional view, FIG. 2(a). (b) and (C) are sectional views taken along the line A-A in FIG. 1, respectively, for explaining the relationship between the operations of the eccentric wheel and the small diameter shaft portion of the crushing member. 5-Main outer wall shell, 6-Lower outer wall side, 9-Spherical shaft, 12-Crushing member, 15-Spherical bearing metal, 17-Crushing space, 1
8 - eccentric wheel, 22 - spherical bearing, CI - center of rotation. Patent applicant Fuku 1) Hiroshi 1

Claims (2)

[Claims] (1) A cylindrical outer wall shell with a larger diameter at the top is fixed in a vertical state, and a cylindrical crushing member that spreads downward from the upper part is placed in the center of this outer wall shell, with the center of its lower end spherical. An annular crushing space that gradually narrows downward is formed in the gap between the crushing member and the outer wall cylinder, and an annular crushing space is formed at the upper end of the crushing member. , an interest bearing using a spherical bearing in which an eccentric wheel rotated by a rotational drive source is rotated with its center of rotation deviated from the center of the crushing member, and the eccentric wheel and the crushing member are fitted between them. Rock crushing characterized in that the crushing member is engaged by a structure, and the crushing space is changed in accordance with the rocking of the crushing member by rotating the upper part of the crushing member around the central axis of the eccentric ring. Device. (2) providing a hydraulic circuit for a path that passes through the center of the spherical shaft and extends from the sliding contact portion of the spherical bearing metal with the spherical shaft, which passes through the center of the spherical shaft and is slidably crowned on the spherical shaft, passes through the crushing member, and reaches the spherical bearing; The rock crushing device according to the patent, characterized in that the spherical bearing metal and the crushing member fixed to the lower end of the spherical bearing metal are floated with respect to the spherical shaft so that a small gap is created by the hydraulic pressure of the circuit.