JPS60172356A - Shearing crusher - 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 means for completely crushing ores, construction materials, chemical components, metal pieces, etc., and in particular to a dynamic crusher.

The invention can be applied in ferrous and non-ferrous metallurgy, in the production of construction materials and in the chemical industry, and can be satisfactorily used for abrasive treatment and the production of metal powders.

A structure of a rotary crusher similar to the structure according to the present invention is disclosed in USSR Inventor's Certificate No. 578,098; Engineering PC! BO202104
No. (1978), this prior art rotary crusher has an outer body in which an adjustment ring is placed;
A fracturing cone is placed within the ring, the fracturing cone having a bearing spherical surface and a press-fitted shaft, the upper retaining portion of the fracturing cone being placed in the cross body of the adjustment ring and having a removable insert. and a ball joint, in which the upper end of the shaft of the crushing cone is received.

The rotary crusher further includes a cup body disposed coaxially with the outer body at F of the crushing cone, and a thrust body having a spherical surface is disposed on the bearing surface of the cup body, and the spherical is in contact engagement with the bearing spherical surface of the crushing cone, and an eccentric body and drive means for rotating the eccentric body are provided on the lower end of the shaft of the crushing cone. To prevent destabilization of the crushing cone, the rotary crusher is equipped with a ball joint and means for vertically moving it, so that the axis of the crushing cone protrudes from the top of the crushing cone, and the ball joint , is mounted on the projecting portion of this shaft such that the distance from the spherical surface of the thrust body is equal to the radius of the sphere. In other words, the upper holding part of the crushing cone serves to prevent the crushing cone or the moving body of the holding cup from becoming unstable.

The structure of this known rotary crusher is
An extremely high degree of precision is required to place the thrust body at a distance equal to the radius of the sphere from the spherical surface of the thrust body. That is, it is necessary to match the center of the sphere of the spherical holding surface of the thrust body with the center of the ball joint of the ball joint. If this coincidence fails, the stable movement of the fracturing cone will be impaired, and thus , leading to excessive wear on the spherical end of the thrust body.

The center of the sphere of the ball joint and the center of the sphere of the spherical surface of the thrust body are the same in the direction perpendicular to the axis of the rotary crusher (the coaxial center of the ball joint and the sphere of the spherical surface of the thrust body) (to give) and both in the longitudinal direction (in height) must be matched. Coaxiality requires a high degree of machining precision when manufacturing the parts of the rotary crusher, and in order to align the centers of these two spheres vertically (in particular, the ball joints must be When placed at a distance equal to the radius of the spherical surface of the sphere, χUsually,
Special measures and high labor costs are required, thus making the assembly of a rotary crusher a complex and time-consuming task. Furthermore, a spherical insert and a ball joint are placed in the bore of the cross body and can be moved axially in the bore during the 1'1 movement of the rotary crusher, thereby The surface is damaged, thus reducing the reliability of the upper support of the crushing cone (7) and thus the reliability of the entire rotary crusher.

In the rotary crusher according to the present invention, even if the center of the sphere of the spherical surface of the upper holding part of the crushing cone 7 does not coincide with the center of the sphere of the spherical surface of the thrust body, the spherical surface of the cone and the thrust The spherical surface of the body is placed in such a way that the spherical surface of the body perfectly matches [,7], so that less effort is consumed during the assembly of the rotary crusher, and it also requires less effort for the fabrication of the parts of the rotary crusher. precision is not required.

The rotary crusher according to the invention has an outer body in which an adjusting ring is placed and in which a crushing cone is placed, which crushing cone has a bearing sphere and a press-fit shaft.
(The upper holding part of said crushing cone is placed in the cross body of the adjustment ring, the removable insert and the boule join)
f, the ball joint receives the upper end of the shaft of the crushing cone, a cup body having a bearing surface is placed below the crushing cone coaxially with the outer body, and a cup body having a bearing surface is placed on the bearing surface of the cup body. A thrust body with a spherical surface is placed,
The spherical surface of this thrust body is in contact engagement with the bearing spherical surface of the crushing cone, and on the F end of the shaft of the crushing cone, an eccentric body,
and eccentric drive means according to the invention are provided, said thrust body being placed on and movable on the bearing surface of the thrust body, the radius of the sphere of the spherical surface of the thrust body being adjustable/ At any selected position of the thrust member, the distance from the center of the sphere of the lunoid joint to the spherical surface of the thrust body is substantially less.

The removable insert of the upper holding part of the crushing cone 7 is fixed to the cross body of the adjustment ring, and the upper end of the shaft of the crushing cone is fixed with play. - It is preferable to connect to a joint.

The present invention will be explained below with reference to embodiments shown in the drawings.

In the figure, the rotary crusher according to the invention has an outer body 1,
In the outer body 1 an adjustment ring 2 is placed, in which a crushing cone 3 is placed, the crushing cone 3 having a shaft 4 pressed into it.

The adjustment ring 2 has a cross body 5 in which the upper holder of the crushing cone 3 and the removable insert 6 and the opening/door are received.

The upper end 8 of the shaft 4 of the fracturing cone 3 is d
? - Placed within Reno Yoint 7. The outer body 1 further has a cup body 9'(f-), the cup body 9 has a bearing surface lO, on which a thrust body 11 having a spherical surface 12 is placed, the radius R of said spherical surface 12 being is from the center of the spherical surface of Dalenoyoint 7 to the surface 10 of cup body 9
This distance is smaller than the distance to the spherical surface 12 of the thrust body 11 that comes into contact with the upper part. The spherical surface 13 of the crushing cone 3 has the same radius Ri as above and rests on the spherical surface 12 of the thrust body 11. On the lower end 14 of the shaft 4 an eccentric 15 is placed coaxially with its drive means. The driving means of the eccentric 15 may take the form of a spherical shaft or a universal joint or a resilient joint.

In the illustration, the eccentric drive means is made as a spherical shaft means 16, which comprises a shaft 17, a ball 18, an upper spline ring 19 and a lower spline ring 20.
I have it. The eccentric drive means includes a joint 2 made of an elastic material.
1 and a transmission belt 22 to the motor B.

The outer body 1 of the rotary crusher is placed on a separate suspension means, and the opening of the cross body 5 is closed by a cover plate 5. Shredding Co 73
A crushing chamber is formed between the conical outer surface of the adjusting ring 2 and the conical inner surface of the adjusting ring 2, into which the material to be crushed is fed.

The rotary crusher according to the invention operates as follows.

The motor shaft rotates with respect to the lower end 14 of the entire shaft 4 of the eccentric body 15 through the transmission bell) 22 and the joint 21ft. Due to the action of centrifugal force, the eccentric body 15 is lifted out of the vertical center line of the outer body 1 and rotates with the lower end 14 of the shaft 4 and the crushing cone 73, thus causing the crushing cone 3 to undergo a pivoting movement. The material 27 to be crushed is fed into the crushing chamber 26 and then "the distance between the crushing cone 3 and the adjusting ring 2 is
Due to the pivoting movement of the cone 3, it is gradually fractured while moving towards the area of minimum.

During operation of the rotary crusher according to the invention, the thrust body 11
is acted on in a direction substantially perpendicular to the center line of the outer body 1 by the following double blades. The above-mentioned double-edged blades are: a) a force generated by the centrifugal force of the eccentric body and the centrifugal force of the crushing cone 3 and directed in the direction of movement of the crushing cone 7; b) a force generated by the contact spherical surface 13 of the crushing cone 3 on the spherical surface 12 of the thrust body 11; C) a horizontal component of the force arising from the frictional force and directed in the direction of movement of the cone 3; C) a frictional force of the thrust body 11 on the bearing surface 10 of the cup 9, directed in a direction opposite to the direction of movement of the cone 3; and so on. .

The total force acting on the crushing cone 3 in the direction of movement is the cup body 9
Overcoming the frictional force of the thrust body 11 on the bearing surface 10 of the thrust body 11 is moved in the direction of movement of the fracturing cone 3.

The relationship between the blades acting perpendicularly to the center line of the outer body 1 on the thrust body 11 is a mutually cooperative pair, namely the pair of the thrust body 11 and the bearing surface IO of the cup body 9, the cone 3
This depends on the friction coefficient in the set of the spherical surface 13 and the spherical surface 12 of the thrust body 11, and also on the relationship between the value of H and the value of L. These relationships are determined separately for each type and size of rotary crusher.

When the thrust body 11 moves on the bearing surface 10 of the cup body 9, +l? - The distance to the center of the ball of Reno Yoint 7 increases. But 17,
Since the upper end 8 of the shaft 4 is connected to the free W, (r motsu -Cg -'/renoyoi 7bi7), the gernoyoint 7 means that the upper end 8 of the shaft 4 is connected to the beer joy/door in the vertical and horizontal planes. It is possible to rotate the thrust body by C with respect to the center of the sphere of the cup body 9.
0, the upper end 8 of the shaft 4 is moved with respect to the center of the ball of the pole nod 7, so that the bearing spherical surface 13 of the fracturing cone 3 is thrust Complete contact and engagement with the spherical surface 12 of the body 1.

Due to the close engagement between the bearing spherical surface 13 of the crushing cone 3 and the spherical surface 12 of the thrust body 11, the spherical surface 1 of the thrust body 11
2 is reduced, and the service life of the thrust body 11 is thus lengthened.

When adjusting the gap at the outlet of the crushing chamber 26, what should be done? - the Luno yoint 7 and the insert 6 fixed to the cross body 5 of the adjusting ring 2 are moved relative to the upper end 8 of the shaft 4 of the fracturing cone 3; Since the insert 6 is rigidly fixed to the cross body 5 of the adjusting ring 2, it can rotate against the surface of the opening in the cross body 5, thus preventing surface wear of said opening in the cross body 5. be done.

Since the thrust body 11 can move on the bearing surface lo of the cup body 9, it is not necessary to align the center of the sphere of the beer joint 7 with the vertical axis of the thrust body 11, and therefore the production of parts and the rotary crusher No great precision is required during assembly.

Since the spherical surface 12 of the thrust body 11 has a radius R that is shorter than the distance from the center of the pole noyoint 70 sphere to the spherical surface of the thrust body 11, that is, where is the center of the spherical surface 12 of the thrust body 1? - Since the door is located at one point from the center of the spheres, the difficulty required to align these centers is eliminated and the amount of effort required to assemble the rotary crusher according to the invention is therefore reduced. Ru.

The assembly of the rotary crusher according to the present invention is carried out as follows.

After the eccentric drive means have been placed in the outer body 1, the cup body 9 and the eccentric 15 themselves are placed therein.

Then, the thrust body 11 touches the bearing surface 1 of the cup body 9.
Freely placed on 0. Then, the crushing cone 3 with the shaft 4 fully press-fitted is placed on the thrust weight 1, and the shaft 14 is inserted into the hole of the eccentric weight 5. The adjusting ring 2 is then placed in the outer body l together with the upper holding part of the crushing cone 3, which is mounted in the cross body 5 and closed by the cover plate t''. It is necessary to insert the upper end 8 into the hole of the ball joint 7.

The installation of the upper holding part of the crushing cone 3 in the adjusting/gut is independent of the placement of the crushing cone 3 on the thrust body 1 and the position of the adjusting ring 2 in the outer body 1. This facilitates assembly of the rotary crusher according to the present invention.

The use of a "floating" thrust body on the cup body eliminates the need to align the center of the sphere of the Dale Noyoint with the center of the sphere of the spherical surface of the thrust body, thus significantly simplifying the assembly of the rotary crusher. Furthermore, the manufacturing of the parts of the rotary crusher does not require much precision.Furthermore, the crushing cone is held upward by means of a ball joint firmly mounted in the cross body. This increases the reliability of the upper holding and thus the reliability of the rotary crusher according to the invention.

[Brief explanation of drawings]

The figure is a longitudinal sectional view showing an embodiment of a rotary crusher according to the invention. ■...Outer body, 2...Adjustment ring, 3...Crushing cone, 4...Shaft, 5...Cross body, 6...Removable insert body, 7...-Runoyoi/ g, 8... upper end of shaft 4;
9... Cup body, 10... Bearing surface of cup body 9, 11... Thrust body, 12... Thrust body 11
spherical surface, 13... Bearing spherical surface of cone 3, 14...
・Lower end of shaft 4, 15... eccentric body, 16... spherical shaft,
17...axis, 18...ball. Applicant's agent Kiyoshi Inomata Continued from page 1 0 Inventors Polis, Gavrilovy Sobitchy, Ivanovya 0 Inventors Nikolai, Aleksej Sobiewicz,
Ivanov-, O-out 1 fjli People Vsesoyuzny, Na Sobiuchno Isledvachersky, I, Proektny, Institut, Mekhanicheskoy, Obravotki, Poleznykh, Ysgopaemifet Federation Leningrad, Uritsa, Basseina 5
, Carvey, 8

Claims (1)

Claims: 1) having an outer body, in which an adjustment ring is placed, in which a fracturing cone is placed, the fracturing cone having a bearing sphere and a press-fit shaft; The upper holding part of the crushing cone is placed in the cross body of the adjustment ring and has a removable insert and a beer joint, and the ball joint receives the entire upper end of the shaft of the crushing cone and is placed under the crushing cone. A cup body having a bearing surface is placed coaxially with the outer body, a thrust body having a spherical surface is placed on the bearing surface of this cup body, and the spherical surface of the thrust body is in contact with the bearing spherical surface of the crushing cone. An eccentric body and an eccentric drive means are provided on the lower end of the shaft of the crushing cone, and further characterized in that the thrust body 01) is mounted on the bearing surface α0) of the cup body (9). The radius of the spherical surface a of said thrust body 01), which can be placed and moved on this plane, is such that, in any selected position of the adjusting ring (2), the ball joint (7)
A rotary crusher configured to be substantially smaller than the distance from the center of the sphere to the spherical surface 02) of the thrust body Oυ. 2) Removable insert (6) in the upper holding part of the crushing cone (3)
is fixed to the cross body (5) of the adjustment ring (2), and the upper end (8) of the shaft (4) of the crushing cone (3) is connected to the ball joint (7) with play. A rotary crusher according to claim 1.