JPH0248075Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a particle size sorter used for sorting crushed stone crushed by a crusher or the like, and in particular to a technique for simplifying a screen moving device for automatic cleaning.

(Prior art) As a conventional particle size sorter, for example, the
The one described in Publication No. 28387 (title of invention: particle size sorter) is known.

This conventional device includes a self-cleaning screen that accommodates bulk materials larger than a predetermined size, and a screen that moves from a horizontal position for sorting to a vertical position for discharging. A particle size sorter comprising a moving device for moving the screen and moving it again to a sorting work position, and a track consisting of a horizontal portion and a downwardly curved portion connected to the horizontal portion to guide the screen, In order to rotatably support the carriage and the screen on it, the center of gravity of the screen passes laterally and engages with a pivot provided on the carriage and a fixed horizontal beam on the lower side to move the carriage horizontally. a first wheel on each side of the carriage for movement, and two second wheels attached to the rear end of the screen to be guided on tracks provided on each horizontal beam; When the second wheel is at the bottom of the curved section of the track, the screen discharges the material to be sorted, and when the second wheel is at the front of the horizontal section of the track, the material is separated. This particle size sorter is characterized by:

A specific example of the moving device for moving the screen from the horizontal position to the vertical position and back to the horizontal position includes two wires, a disk, a pulley, a release lever, and a hook. In addition to the first moving device constituted by a return spring,
A second moving device is disclosed that includes a double-acting hydraulic cylinder and a piston.

(Problems to be solved by the invention) However, in the case of conventional particle size sorters,
Since the track that guides the movement of the screen and the fixed horizontal beam that guides the movement of the carriage that pivotally supports the screen are both installed in a horizontal state at the sorting work position, it is possible to avoid discharging at least from the horizontal position where the sorting work is performed. In order to move in the direction of the vertical position where work is to be performed, some forced movement means must necessarily be provided, as disclosed in the first moving device and the second moving device, but especially in the horizontal direction. When moving from position to vertical position, larger pieces of crushed stone are placed on the screen, so a large amount of force is required to forcibly move this, and therefore, a large-scale moving device is required. There was the problem of becoming something.

(Means for solving the problems) The present invention was made to solve the above problems, and its purpose is to:
The purpose of the present invention is to simplify the screen moving device, and as a means to achieve this purpose, the present invention includes a carriage that moves substantially laterally along a beam using moving wheels provided at the front and rear, and a A self-cleaning screen that is rotatably supported by a pivot that passes in the lateral direction approximately at the center of gravity; a straight line portion for guiding a screen rotation wheel provided at the discharge side end of the screen; and a straight line portion. a track consisting of a series of downwardly curved portions, a first moving means for moving the screen from a substantially horizontal position for performing sorting work to a substantially vertical position for performing discharge work, and a second moving means for moving the screen back to the sorting work position. A particle size sorter comprising: a carriage, a screen, and a particle size sorter as the first moving means, which uses the weight of the crushed stones placed on the screen to naturally fall toward a vertical position where the screen performs a discharge operation; The screen is provided with a releasable locking device for tilting the straight portion of the beam and the track and holding the screen in a substantially horizontal position where the sorting work is performed, and using a winch as the second moving means. And so.

(Function) As described above, in the particle size sorter of the present invention, the carriage, the screen, and the By tilting the straight section of the beam and track so that the screen naturally falls toward the vertical position where the discharge work is performed using the weight of the crushed stones placed on the It is only necessary to provide a releasable locking device for holding the screen in the substantially horizontal position in which the sorting operation is to be carried out, thus greatly simplifying the first moving means.

In addition, a winch is used as the second moving means, but when the screen is moved to the separation work position again, the crushed stone has already been discharged, so a winch with a small capacity is sufficient, and therefore the overall device requires a large amount of work. Simplification becomes possible.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be explained.

As shown in FIGS. 1 to 6, the particle size sorter A of this embodiment includes a beam 1, a carriage 2, a screen 3, a track 4, a first moving means 5, and a winch 6 constituting the second moving means. It is provided as the main component.

The beams 1 are provided on the gate-shaped frame F in a substantially parallel state.

The carriage 2 is formed into a substantially rectangular frame shape,
Moreover, it is movable on a pair of left and right beams 1 by means of moving wheels 20 provided on both front and rear sides thereof.

The self-cleaning screen 3 is rotatably supported within the carriage 2 by a pivot shaft 30 passing laterally through its approximate center of gravity, and has tracks 4 on both sides of its discharge end. It is equipped with wheels 31 for rotating the screen which are guided and moved.

The track 4 serves as a guide for changing the screen 3 from a substantially horizontal position for sorting to a substantially vertical position for discharging. and a portion 4b.

The first moving means 5 is a means for moving the screen 3 from a substantially horizontal position where sorting work is performed to a substantially vertical position where discharge work is performed,
The straight portion 4a of the beam 1 and the track 4 is arranged so that the screen 3 naturally falls in the direction of the vertical position where the discharge operation is performed by utilizing the weight of the carriage 2, the screen 3, and the crushed stones G placed on the screen. The structure is such that the lock device 50 is tilted and is provided with a locking device 50 that can be released.

This locking device 50 is a device for holding the screen in a substantially horizontal position for performing sorting work, and in this embodiment, as shown in FIG. 4, an engaging pin 50a is provided on the carriage 2 side, and
On the side of the gate-shaped frame F, there is a hook 50b whose base end is rotatably pivoted, a spring 50c that constantly biases the hook 50b in the direction of engaging the engagement pin 50a, and a spring 50c that is connected to the engagement pin 50a. The hook 50b includes an electromagnetic force actuator 50d that moves the hook in the direction of detachment, and an engagement pin 50 at the tip of the hook 50b.
The configuration includes a tapered surface 50e that guides the engagement of a.

The winch 6 constitutes a second moving means for moving from a substantially vertical position where discharge work is performed to a substantially horizontal position where separation work is performed again, and in this embodiment, as shown in FIG. 60
, a winding drum 61 , a clutch 62 , and a wire 63 , the tip of which is connected to the carriage 2 via a pulley 64 .

In the figure, 7 is a micro switch for stopping the winch and disengaging the clutch provided on the side of the sorting work position, 8 is a micro switch for operating the winch and engaging the clutch provided on the side of the discharge work position, 9 is a buffer member, and 10 is an initial movement. It is a compression spring for
This serves to push out the carriage 2 at the same time as the locking device 50 is released by utilizing the repulsive energy of the spring compressed by the winding by the winch 6.

Next, the operation of the embodiment will be explained.

Since this embodiment has the above-mentioned configuration, first, when the crushed stone G has accumulated on the screen 3, when the electromagnetic force actuator 50d is energized by wired or wireless operation, the hook 50b is activated by the spring 50c.
The carriage 2 and the screen 3 are first pushed out by the repulsive force of the initial movement spring 10 as they are rotated clockwise in FIG. At the same time, due to the weight of both of them and the weight of the crushed stones G accumulated on the screen 3, as shown in FIG. The screen rotation wheels 31 provided at the discharge side end of the screen 3 are guided by the curved portion 4b of the track 4 and fall downward, so the screen 3 rotates approximately vertically about its pivot 30 and crushes the crushed stones. G is discharged.

Next, when the screen 3 changes to the approximately vertical position where it performs the discharge operation, the carriage 2 operates the winch operation and clutch engagement micro switch 8, which activates the winch 6 and the screen 3 is hoisted together with the carriage 2. and then move to a nearly horizontal position where the sorting work will be carried out again.
The locking device 50 is activated to hold the carriage 2 and screen 3 in a substantially horizontal position for performing sorting work, and at the same time, the carriage 2 activates the winch stop and clutch release micro switch 7, and the winch 6 stops hoisting. do. Then, as the winch 6 stops operating, the clutch 62 is disengaged, and the winding drum 61 becomes free.

As explained above, in the particle size sorter A of this embodiment, as described above, the first moving means moves the screen 3 from the substantially horizontal position where the separation work is performed to the substantially vertical position where the discharge work is performed. 5, a straight section of the beam 1 and the track 4 is arranged so that the screen 3 naturally falls in the direction of the vertical position where the discharge operation is performed using the weight of the carriage 2, the screen 3, and the crushed stones G placed on the screen. By tilting the screen 3, the first moving means 5 only needs to be provided with a releasable locking device 50 for holding the screen 3 in a substantially horizontal position where the sorting operation is performed. The method can be greatly simplified.

In addition, a winch 6 is used as the second moving means, but when the screen 3 is moved to the sorting work position again, the crushed stone G has already been discharged, so a winch with a small capacity is sufficient, and therefore the entire apparatus This allows for significant simplification.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, in the embodiment, a case is shown in which the locking device 50 is provided at only one location in the center of the device, but the location and number of devices to be provided are arbitrary, and the specific structure of the locking device is also arbitrary. Any device may be used as long as the screen can be held in a substantially horizontal position where the sorting work is performed and the locked state can be released.

Therefore, by using a winch 6 equipped with an electromagnetic brake, it is possible to perform the same function as the locking device 50. In this case, the engaging operation of the clutch 62 may be performed by the micro switch 8 provided on the discharge work position side as in the case of the above embodiment, but the clutch 62 may be engaged.
A separate clutch circuit is provided for the switching operation, and this switch is used as a clutch for releasing the lock device.

Further, the drive type of the winch is also arbitrary.

(Effects of the Invention) As explained above, in the particle size sorter of the present invention, as the first moving means for moving the screen from the approximately horizontal position where the separation work is performed to the approximately vertical position where the discharge work is performed, By tilting the straight section of the beam and track so that the screen naturally falls toward the vertical position where the discharge operation is performed using the weight of the carriage, the screen, and the crushed stones placed on the screen, the first The moving means only needs to be provided with a releasable locking device for holding the screen in a substantially horizontal position for separate sorting operations, and the first moving means can therefore be greatly simplified.

In addition, a winch is used as the second moving means, but when the screen is moved to the separation work position again, the crushed stone has already been discharged, so a winch with a small capacity is sufficient, and therefore the overall device requires a large amount of work. The effect is that simplification becomes possible.

[Brief explanation of drawings]

Fig. 1 is a side view showing a particle size sorter according to an embodiment of the present invention, Fig. 2 is a side view showing the discharge position of the screen, Fig. 3 is a perspective view showing details of the screen portion, and Fig. 4 is a locking device. An explanatory diagram showing details of the parts, FIG. 5 is an explanatory diagram showing details of the winch part,
FIG. 6 is an explanatory diagram showing details of the micro switch portion. 1...beam, 2...carriage, 3...screen, 4...orbit, 4a...straight line section, 4b...
Curved portion, 5... First moving means, 6... Winch (second moving means), 20... Moving wheel, 30... Pivot, 31... Screen rotation wheel, 50... Locking device, G... Crushed stone.

Claims (1)

[Claims for Utility Model Registration] A carriage that moves substantially laterally along a beam by means of movable wheels provided at the front and rear, and is freely rotatable with respect to the carriage by a pivot that passes laterally through its approximate center of gravity. A self-cleaning screen supported by
A track consisting of a straight line part for guiding a screen rotation wheel provided at the discharge side end of the screen and a downwardly curved part connected to the straight line part, and a track discharging the screen from a substantially horizontal position where sorting work is performed. A particle size sorter is provided with a first moving means for moving in the direction of a substantially vertical position where work is performed, and a second moving means for moving back to a sorting work position, wherein the first moving means includes a carriage, a screen, and The straight sections of the beams and tracks are tilted so that the screen naturally falls toward the vertical position where the discharge work is performed using the weight of the crushed stones placed on the screen, and the screen is placed in the approximately horizontal position where the separation work is performed. A particle size sorter comprising a releasable locking device for holding the particles, and a winch is used as the second moving means.