JPH0451873Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cone crusher, and more particularly to a cone crusher that can quickly and accurately adjust the position of a concave relative to a mantle.

(Prior art) Generally, a cone crusher has a cylindrical top cell that holds a concave, and this top cell is supported on the top frame by meshing a male thread formed on the outer circumferential surface with a female thread formed on the top frame. has been done. This top frame is placed on the main frame and is pressed against the main frame by a release spring.

A hydraulic cylinder for rotating the top cell relative to the top frame is provided on the top frame so as to drive its piston rod in the tangential direction of the top cell.

(Problem to be solved by the invention) In the above cone crusher, when the concave and/or mantle are replaced or when they are worn out, the above hydraulic cylinder is used to readjust the gap between them. is activated, and the top cell is rotated and moved vertically relative to the top frame.

However, the amount of rotation of the top cell that can be brought about by one stroke of the hydraulic cylinder is relatively small, and the amount of movement of the top cell that can be obtained by feeding the screw at that time is also small. Also, at that time,
Whether or not the desired amount of travel has been achieved depends on manual measurement, and it is necessary to repeat measurements and actuate the hydraulic cylinder until the desired value is obtained, which is cumbersome and time-consuming. It takes.

Therefore, an object of the present invention is to provide a cone crusher that can be adjusted very quickly, automatically and accurately.

(Means for Solving the Problems) According to the present invention, the above object is to include a main frame, an annular top frame supported on the main frame so as to be vertically variable, and a top frame attached to the top frame. a concave holding cylindrical top cell which is fitted in the top frame and is arranged to be able to slide vertically in a straight line without relative rotation with respect to the top frame; a hydraulic cylinder for position setting, which is moved perpendicularly to the top frame and held at a desired position; a hydraulic jack for activating a brake lining to fix the top cell to the frame and for fixing and releasing the top cell from the top frame;
This is achieved by a cone crusher characterized by having the above-described position setting hydraulic cylinder and a control device for controlling the operation of the hydraulic jack.

(Function) When it becomes necessary to adjust the position of the cone cave 8 in the vertical direction, first operate the fluid pressure jack 13c, thereby moving the brake lining 13e ₁ backward, and fixing the top frame 2 and top cell 3. Release. Next, the position setting hydraulic cylinder 9 is operated to move the top cell 3 in the vertical direction and adjust the cone cave 8 to a desired position. Next, the brake lining 13 is moved by operating the hydraulic jack 13c in the opposite direction.
e ₁ is moved forward and pressed against the top cell 3, thereby fixing the top frame 2 and the top cell 3 again.

(Embodiment) In FIG. 1, 1 is a main frame, 2 is a top frame, and 3 is a top cell.

A main shaft 4 is supported in the center of the main frame 1 so as to rotate eccentrically, and a mantle 5 is attached to the upper part of the main shaft. The main shaft 4 is swiveled by a suitable drive, and the mantle 5 is accordingly swiveled.

The annularly formed top frame 2 has an annular groove 2a corresponding to the annular seating floor 1a with a trapezoidal cross section provided at the upper end of the main frame 1. Sit stably. Guide pins 6 are provided upright at a plurality of locations on the seating floor 1a, and these guide pins are loosely fitted into holes 2b provided in the top frame 2. Therefore, the top frame 2 is movable relative to the main frame 1 in the vertical direction, that is, in the axial direction.

The top frame 2 has a plurality of vertical ribs 2c vertically arranged at appropriate intervals on the lower part of the outer circumference thereof, and a plurality of vertical ribs 1b on the outer circumference side of the main frame 1 opposite thereto. It is provided. Each pair of ribs 2c and 1b facing vertically is a top frame.
They are connected by a main frame hold cylinder 7. In particular, the cylinder portion 7a of this hold cylinder is pivoted to the rib 2c, and the rod 7a is
b is pivoted to the rib 1b. By mounting the hold cylinder 7 facing downward on the rod side, the hold cylinder 7 can be protected against dust and rods. The above hold cylinder 7
acts as a tension spring, and therefore holds the top frame 2 against the main frame 1, and also protects the cone cave when a large rock is caught between the mantle 5 and the cone cave 8, which will be described later, during crushing operations. This acts to temporarily expand the fracture gap.

Next, a top cell 3 that holds a concave 8 is fitted into the top frame 2, and is configured to slide in the vertical direction, that is, in the axial direction, with respect to the top frame. This top cell 3 has a horizontal flange 3b reinforced by a plurality of ribs 3a on its upper outer periphery side, and a positioning cylinder 9 is interposed between this flange and the top frame 2. The positioning cylinders are provided at a plurality of locations, for example, six locations, around the top cell 3, one of which is a cylinder equipped with a position detector for detecting the amount of movement in the axial direction. Furthermore, by using a positioning cylinder with a switch, it is possible to indicate when the concave 8 and the mantle 5 are to be replaced.

As shown in the figure, the cylinder portion 9a of the positioning cylinder 9 is fixed to the top frame 2,
Further, the rod 9b is connected to the flange 3b of the top cell 3. In particular, this connection is made through a spherical joint 10, as shown in FIG. 2, so that no uneven load is applied to the cylinder 9. In detail, this spherical joint 10 includes a spherical end fitting 1 screwed onto a male thread 9c formed at the end of a rod 9b and fixed by a set screw 10a.
0b, and its spherical portion abuts against a receiving plate 10c attached to the flange 3b. The lower surface of the end fitting 10b is made flat, and a spherical washer 10d having a flat surface that abuts against the lower surface and a spherical surface on the opposite side is screwed onto the male screw 9c. Furthermore, a conical sheet 10e is attached to the lower side of this spherical washer by fitting it into a screw 9c. This conical sheet 10e is supported from below by a frame 10f attached to the receiving plate 10c.
The above-mentioned receiving plate 10c has a protrusion 10c' in the upper center thereof that loosely fits into the hole 3c formed in the flange 3b. This connects the support plate 10c and the support member 11, which loosely sandwich the flange 3b.

The above positioning cylinder 9 is the top cell 3
is moved up and down, set at a desired position, and then held at that position. In order to further ensure this holding, a wedge mechanism 13 as shown in FIGS. 3 to 5 is provided.

This wedge mechanism has a wedge member 13a, and this wedge member has a slope 13a ₁ on the side facing the top cell 3, the upper part approaching the top cell 3 and the lower part separating from the top cell 3. frame 2
It is guided so that it can be moved up and down.
This guide uses a vertical protrusion 13b ₁ provided on a slide guide 13b screwed to the top frame 2.
This is achieved by engaging the longitudinal grooves 13a ₂ provided on both sides of the wedge member 13a on both sides of the wedge member, respectively.

A jack 13c consisting of, for example, a hydraulic cylinder is arranged below the wedge member 13a, and the jack 13c, which is made of a hydraulic cylinder, for example, is fixed on the top frame _2. By acting the operating rod 13c1 on the lower surface of the wedge member 13a, the jack 13c is fixed to the top frame 2. It is designed to boost the

A slide plate 13d is replaceably bolted to the slope _13a1 of the wedge member 13a.

A slide holder 13e is disposed between the wedge member 13a and the top cell 3, and the slide holder 13e is guided by a guide member 13f so that it can slide relative to the top cell 3 in the radial direction. The brake lining 13e ₁ is attached to the front of the slide holder 13e, and the hexagon socket head flat screw 13e ₂
The back surface thereof is an inclined surface 13e ₃ having the same slope as the front surface 13d ₁ of the slide plate 13d. Further, the slide holder 13e has spring receiving members _13e4 on both sides thereof, and the slide holder 13e is located inside the hole _13e5 formed in the spring receiving member.
A compression coil spring 13g arranged so as to exert its action in the sliding direction is housed. And this coil spring 13g has a guide rod 13h.
is inserted through it, and the rear end is the slide guide 13
b, and the front free end has an enlarged diameter head 13h ₁
is formed. The compression coil spring 13g is sandwiched between the head _13h1 and the bottom of the hole _13e5 . Therefore, when the jack 13c is operated and the wedge member 13a is pushed up to create a gap in front of the front surface 13d1 of the slide plate 13d, the spring receiving member ₁ is moved by the action of the coil spring 13g.
3e ₄ is therefore integrated with slide holder 1
3e and the brake lining _13e1 are moved back, and the pressure contact with the top cell 3 is released.

A support bar 13i is arranged above the wedge member 13a, and the support bar 13i is placed on the wedge member 13a by placing a push pin protruding from the lower surface onto the push pin protruding from the upper surface of the wedge member 13a. It is placed. This support bar has through holes 13i ₁ bored near both ends thereof, into which stud bolts 13j, which are erected on the top frame 2 at the side portions of the wedge member 13a, are loosely inserted. be. A number of disc springs 13m sandwiched between washers 13k are fitted into the stud bolt 13j that protrudes upward from the support bar 13i.
It is tightened by n. Therefore, the support bar 13i is pushed down by the repulsive force of the disc spring 13m, and the pushing down force acts on the slide holder 13e via the wedge member 13a and the slide plate 13d when the shovel 13c is not operating. Then, push this slide holder in the direction of the top cell 3 to remove the brake lining 13.
This brings about a frictional connection between e ₁ and top cell 3. As mentioned above, this frictional connection is released by jack 13c.
This is done by activating the wedge member 13a and pushing up the wedge member 13a.
This is done while compressing this disc spring against the force of .

The above-mentioned hold cylinder 7, positioning cylinder 9, and jack 13c can be incorporated and controlled in a suitable hydraulic circuit. In that case, safety can be improved by holding the top frame 2 and main frame 1 by three or more systems of accumulator circuits, and by providing a stopper valve in each line. Further, in order to synchronize the plurality of positioning cylinders 9 with each other, it is preferable to provide a flow rate regulating valve in each pressure oil line. In an emergency, the mantle 5 and concave 8 can be released in two steps: the positioning cylinder 9 and the hold cylinder 7.

By controlling the above-mentioned hydraulic circuit, the gap between the mantle 5 and the concave 8 can be automatically adjusted, and the automatic operation is performed by, for example, a sequencer as shown in Fig. 6. .

First, when the appropriately provided position set push button is turned on (step), the hydraulic pumps No. 1 and No. 2 for the hold cylinder 7, positioning cylinder 9, and jack 13c are started one after another (step and). Next, the hold cylinder 7 is operated to hold the top frame 2 to the main frame 1 (step), and the jack 13c is operated to release the lock of the top cell 3 by the wedge mechanism 13 (step). Next, the positioning cylinder 9 is actuated to raise the top cell 3 by the required amount (step) and then lower it (step). concave 8 is mantle 5
After the 0 position of the crushing chamber outlet gap is confirmed (step), the positioning cylinder 9 is activated and the top cell 3 is raised by a set amount (step). Next, the pushing up action by the jack 13c is released, and as a result, the disc spring 13m
acts to clamp the top cell 3 (step), and the setting is completed (step).

After that, when the hydraulic cone main motor push button (not shown) is turned on (step), the hydraulic cone main motor is driven, rotates the mantle 5 (step), and crushes the material introduced into the crushing chamber. .

(Effects) As described above, according to the present invention, the crushing chamber outlet gap can be set extremely quickly by operating the fluid pressure jack and the fluid pressure cylinder, which greatly reduces the downtime due to set adjustment. It is possible to shorten the time, therefore, efficient operation is possible, and effects such as automation and remote control can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a partial central vertical sectional view of the cone crusher of the present invention, Fig. 2 is an enlarged scale view of the vicinity of section A in Fig. 1, Fig. 3 is an enlarged scale side view of the wedge mechanism, and Fig. 4 is an enlarged scale view of the wedge mechanism. 3 is a partially cutaway front view, FIG. 5 is a partially cutaway plan view of FIG. 3, and FIG. 6 is an automatic operation block diagram. DESCRIPTION OF SYMBOLS 1...Main frame, 2...Top frame, 3...Top cell, 9...Fluid pressure cylinder for position setting, 13a...Wedge member, 13c...Fluid pressure jack, 13d ₁ ...Front surface of wedge member, 13e ₁
... Brake lining, 13e ... Slide holder, 13e ₃ ... Back of slide holder, 1
3m...pressure spring.

Claims (1)

[Claims for Utility Model Registration] 1. A main frame 1, an annular top frame 2 supported on the main frame 1 so as to be variable in its vertical position, and a main frame 2 that is partially fitted into the top frame. A cylindrical top cell 3 for holding a concape is disposed so as to be slidable in a straight line in a vertical direction without relative rotation, and a cylindrical top cell 3 is provided between the top frame and the top cell to move the top cell in a vertical direction with respect to the top frame. , a position setting fluid pressure cylinder 9 for holding at a desired position, and the top frame 2.
The fixing of the top cell 3 to the top frame 2 by actuating the brake lining _13e1 , which is supported in a radially movable manner and which, when pressed radially inwardly, causes the fixation of the top cell 3 to the top frame 2. A cone crusher comprising: a fluid pressure jack 13c for controlling and releasing the position setting fluid pressure cylinder 9; and a control device for controlling the operation of the above-mentioned position setting fluid pressure cylinder 9 and the fluid pressure jack 13c. 2 Utility Model Registration In the cone crusher described in claim 1, a plurality of fluid pressure cylinders 9 are arranged around the top cell 3, and one of them has a position detection function for detecting the amount of movement of the top cell 3. Cone crusher is a cylinder with a device. 3 In the cone crusher described in claim 1 or 2 of the utility model registration claim, the means for movably supporting the brake lining 13e ₁ in the radial direction holds the brake lining 13e ₁ on the inner end surface. A slide holder 1 is slidably supported in a radial direction on a top frame 2.
3e, and a wedge member 13a supported on the top frame 2 so as to be slidable in the vertical direction.
e ₃ and the front surface 13d ₁ of the wedge member 13a are configured as inclined surfaces in sliding contact with each other, and these inclined surfaces cause the slide holder 13e to move forward inward due to the downward movement of the wedge member 13a.
The wedge member 13a is inclined in a direction that allows backward movement outward by upward movement, and the downward movement of the wedge member 13a is brought about by the pressing spring 13m, and the upward movement is brought about by the fluid pressure jack 13c. Corn crackers being poured.