JPS6244980B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rock crushing device that crushes rocks to make gravel.The purpose of the present invention is to create a revolutionary device that can produce gravel from quarrying all at once with a single device. The objective is to provide a crushing device that is

Conventionally, when making gravel, which is mainly mixed with cement and used as aggregate for concrete, by crushing rocks taken from mountains and rivers, multiple units of the same type of equipment are used, which is extremely inefficient and uneconomical. It was hot. In other words, this type of conventional crushing device, called a cone crusher, has a cylindrical outer wall whose diameter widens toward the bottom, and a crushing member with an eight-shaped cross section corresponding to the outer wall at the top. A main shaft fixed to the outside is hung so as to be swingable, and an eccentric ring is fitted to the lower part of the main shaft with its center of rotation offset from the center of the shaft, and this eccentric ring is connected to a bevel gear. By transmitting and driving the rotation of the motor through a 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 according to the swinging of the shaft. The structure is such that the rock introduced into the gap is crushed by being pressed against the outer wall by a crushing member.

Therefore, since the shaft having the crushing member attached to its upper part is oscillated by rotating its lower part, the change in the oscillation of the crushing member is not so large. Therefore, after preparing multiple devices with the same configuration as above but differing 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 gravel of the required particle size is produced through a process of further halving, it is not only inefficient and expensive, but also requires a large space to install multiple devices, which poses many problems. There is a point. However, since the crushing space formed between the outer wall body and the crushing member gradually becomes narrower toward the bottom, and forms an annular shape with approximately uniform spacing on the same plane, it is suitable for this purpose. There is a defect that if a rock of a size that cannot be crushed is thrown in, it will become impossible to crush.

This invention was made in view of the above-mentioned conventional problems, and the space for rock crushing formed by the gap between the outer wall shell and the crushing member is unevenly spaced in the upper part and gradually moves downward from the middle part. By making the crushing member narrower, the lower end of the crushing member is supported by a bearing, and the upper end or the entirety of the crushing member is rotated and swung, thereby gradually crushing the input rock into smaller pieces. To provide a rock crushing device capable of obtaining gravel of a required particle size with one device by dropping gravel, and also capable of reliably crushing even when large rocks are thrown in.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, 1, 2, and 3 indicate an upper frame, an intermediate frame, and a lower frame, respectively;
A machine frame is constructed on a machine base 4 by these frames 1, 2, and 3. As shown in Figure 3, this machine frame has protrusions 5' that protrude outward from three locations on the circular circumference at the top, and whose diameter gradually decreases from the middle to the bottom. At the same time, a cylindrical main outer wall shell 5 is fixed, and a cylindrical main outer wall shell 5 with a cross-sectional shape corresponding to the upper opening shape of the main outer wall shell 5 and whose diameter increases downwardly is attached to the upper part of the main outer wall shell 5. A top cell liner 6 is connected to the upper end circumferential surface of the main outer wall shell 5, and a cylindrical lower outer wall shell 7 whose diameter increases downwardly is provided at the lower part of the main outer wall shell 5. are connected to the lower end circumferential surface of the main outer wall shell 5, and together constitute the outer wall shell into which rocks are to be charged. 8
shows 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 the spherical shaft 9 is lowered when a load exceeding a predetermined value is applied. , and 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 cylindrical shape whose diameter gradually decreases toward the bottom, and a core shaft body 14 having a small-diameter shaft portion 13 extending from the top thereof.
A spherical bearing metal 15, which is slidably crowned on the spherical shaft 9, is fitted and fixed on the lower end surface of the spherical shaft 9, and a cone cape 16 having a cylindrical shape of a figure eight in cross section is externally fitted and fixed on the core shaft 14. Between the cone cape 16 of the crushing member 12 and the main outer wall shell 5 and the lower outer wall shell 7 of the outer wall shell, an annular crusher is formed which has uneven spacing in the upper part and gradually narrows from the middle part downward. A space 17 is provided.

Reference numeral 18 indicates an eccentric ring, which has a cylindrical shape with a head and has a hollow portion 19 whose center line C2 is offset from the center of rotation C1. The head bearing 20, head bearing holder 21, collar ring 22, thrust cover 23, main bearing 24, bearing sleeve 25, etc. are attached to the upper frame. 1 and is rotatably held. A mounting shaft 26 protrudes from the upper part of the eccentric wheel 18, and a V-pulley 27 is fitted onto this mounting shaft 26. ) The rotation of the motor is transmitted through a pulley (not shown) attached to a belt (not shown) and a belt (not shown) wound and stretched around the pulley (not shown). And the small diameter shaft portion 13
and an elastically deformable spherical bearing 2 between the eccentric wheel 18 and the eccentric wheel 18.
9 is inserted, the small diameter shaft portion 13 and the eccentric ring 18 are engaged, and the small diameter shaft portion 1
3 is rotated around the rotation center C1 of the eccentric wheel 18.

Reference numeral 30 denotes a hydraulic transmission pipe connected to a hydraulic pump (not shown), and communicates with an oil passage 31 that is penetrated and bored along the center line of the spherical shaft 9. or,
The spherical bearing metal 15 has an oil passage 32 penetrating from the sliding surface with the spherical shaft 9 to the side surface, and radial oil grooves 33 on the fitting surface with the core shaft body 14. In the shaft body 14 and the small diameter shaft part 13, the spherical bearing 2 rises along the center line from the fitting surface with the spherical bearing metal 15 and extends from the center of the small diameter shaft part 13.
An oil passage 34 is perforated to reach the joint surface with the small diameter shaft portion 13 and the spherical bearing 29, and an oil circulation pipe 35 is provided from the joint surface of the small diameter shaft portion 13 and the spherical bearing 29 to the hydraulic pump. 9 and the spherical bearing metal 15, an oil passage 32, an oil groove 33, an oil passage 34, a joint surface between the small diameter shaft portion 13 and the spherical bearing 29, an oil circulation pipe 35, and a hydraulic circuit that circulates the hydraulic pump. Due to this oil pressure, the spherical bearing metal 15 is slightly floated from the spherical shaft 9, so that a small gap is always created, so that the crushing member 12 can swing smoothly.
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, the small diameter shaft portion 13 is deviated from the rotation center C1 of the eccentric wheel 18, as shown in FIGS. 2a, b, and c. The crushing member 12 is rotated around the rotation center C1, and its lower end slides on the spherical shaft 9, causing it to swing greatly, and the crushing space 17 changes in accordance with the rocking of the crushing member 12. Therefore, when a rock is thrown into the crushing space 17 as shown by the dashed line in FIG. I will do it. Here, the crushing space 17 gradually becomes narrower from above to below, and 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 in rolling contact with the barrel 6, the required gravel can be obtained at once by inputting ordinary quarry stone. However, since three protrusions 5' are formed on the main outer wall body 5, even if quarried rock, which is a mixture of large and small rocks taken from mountains and rivers, is directly input, the line shown in the dashed dot line in Fig. 3 As shown in , a large rock is thrown into the protrusion 5', and as it is crushed by the crushing member that swings in the direction of the arrow, it is moved in the direction of the arrow, broken into small pieces, and falls downward. Therefore, even if large rocks are mixed in, they can be crushed quickly and without any problem. or,
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 become clogged between the lower end of the cone cape 16 and the lower outer wall shell 7 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,
When the cone cape 16 is detached from the lower outer wall shell 7 and the crushed stones that have been stuck are dropped, thereby relieving the heavy load, the spherical shaft 9 is raised again to its original position by the oil jack 8 and held there. This prevents the equipment from being damaged or malfunctioning due to heavy loads.

Incidentally, the outer wall shell may have a shape as shown in FIG. The same figure is a plan view of the main outer wall body 39, and the upper opening shape is elliptical, and a protrusion 39' is formed in a substantially semicircular portion, achieving the same effect as in the previous embodiment. I can do it. In addition, in the embodiment, the protrusions 5' are provided at three locations on the circular circumference, but the protrusions 5' may be provided at four or more locations.

Furthermore, in the embodiment described above, the crushing member 12 has a structure in which the lower part is supported by the spherical shaft 9 and the upper part is rotated to swing, but as shown in FIGS. An eccentric shaft 40 on which a V-pulley 27 which is rotated by a rotational drive source such as the like is rotatably held vertically by an upper bearing 41 and a lower bearing 42.
The eccentric member 43 is inserted into the crushing member 12 with its center line aligned with each other, and the eccentric member 43 is inserted into the crushing member 12 so that the center lines thereof are aligned. Shaft 40 and crushing member 1
2 are engaged by an alignment bearing structure using a bearing 44 fitted between them, the eccentric shaft 4
0 rotation, the entire crushing member 12 is rotated around the eccentric shaft 40, and the swinging range of the crushing member 12 is increased, so that the rock is crushed more effectively and quickly.

As described above, according to the rock crushing device of the present invention, the lower end of the crushing member is supported by a bearing, and the upper end is rotated by an eccentric ring, or the entire body is rotated. The oscillation of the opposing crushing members is large, and the oscillation range is much larger than that of conventional devices of this type. It can be installed all over the top and bottom so that it gradually narrows from the top to the bottom, and it is possible to obtain gravel of the desired particle size from rocks with only one device.Since only one device is required, the production cost of gravel can be significantly reduced. It is an epoch-making device that can achieve extremely remarkable practical effects, such as being able to reduce the amount of energy used, and has extremely high efficiency, and does not require a large space to install the device. However, since the upper part of the outer wall shell has a non-circular shape, there is a great advantage that even if large rocks are thrown in, they can be crushed reliably. Furthermore, unlike conventional devices in which the main shaft is suspended, the lower end surface is supported by bearings, so it has excellent robustness and has the effect of being able to obtain a powerful crushing force.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the rock crushing device of the invention, Figure 1 is a longitudinal sectional view, Figure 2 a, b, c
3 is a cutaway plan view showing the relationship between the eccentric ring and the small diameter shaft of the crushing member, FIG. 3 is a cutaway plan view showing the relationship between the main outer wall cylinder and the crusher, and FIG. 4 is a cutaway plan view showing the relationship between the main outer wall cylinder and the crushing member. FIG. 5 is a plan view of another embodiment of the barrel, FIG. 6 is a longitudinal sectional view of another embodiment of the present invention, and FIG. 6 is B of FIG.
- This is a cross-sectional view taken along line B. 5, 39...Main outer wall shell, 5'...Protrusion, 6...
... lower outer wall shell, 9 ... spherical shaft, 12 ... crushing member, 15 ... spherical bearing metal, 17 ... crushing space, 18 ... eccentric ring, 22 ... spherical bearing, C1 ...
... Rotation center, 40 ... Eccentric shaft, 42 ... Lower bearing, 44 ... Bearing.

Claims (1)

[Scope of Claims] 1. A cylindrical outer wall shell whose upper opening has a non-circular cross section is fixed with the cylinder core in a vertical state, and the outer wall shell is fixed at the center of the outer wall shell from the upper part downward. A cylindrical crushing member whose diameter becomes larger toward the end toward the end is supported in a swingable manner at the center of its lower end, and a space between the crushing member and the outer wall cylinder is provided so that a gap is formed at the upper part of the crushing member. An annular crushing space is formed that is uneven and gradually narrows downward from the middle part, and an eccentric wheel or an eccentric shaft rotated by a rotational drive source is set such that its rotation center is the center of the crushing member. The crushing member is positioned offset from the center, and is engaged by an alignment bearing structure including a bearing fitted between the eccentric wheel or the eccentric shaft and the crushing member, so that the upper part or the whole of the crushing member is aligned with the eccentric wheel or the crushing member. A rock crushing device characterized in that the crushing space is changed in accordance with the rocking of the crushing member by rotating around the central axis of the shaft. 2. The rock crushing device according to claim 1, wherein the outer wall shell has an elliptical upper opening. 3. The rock crushing device according to claim 1, wherein the outer wall cylinder has an upper opening having a shape in which a plurality of points on the circular peripheral surface protrude outward.