JPH072071Y2 - Vibrating screen drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a drive device for a vibrating screen.

[Prior Art] Conventionally, a drive device of this type of vibrating screen is disclosed in, for example, Japanese Patent Publication No.
No. 40791 is disclosed. That is, a pair of adjacent vibration generating mechanisms are arranged on the left and right sides, and the vibration generating mechanisms are connected to a synchronous reversing mechanism that synchronously rotates in opposite directions, and a drive source is provided at the input end of the synchronous reversing mechanism. In this way, the vibrating screen is driven to generate a linear motion or an elliptical motion in the vibrating screen.

A pair of vibration generating mechanisms are provided in the longitudinal direction of the screen frame of the vibrating screen, and a pair of similar vibration generating mechanisms are provided in the longitudinal direction of the screen frame in the opposite direction, that is, the screen frames on both sides. A vibration generating mechanism is provided in each of the longitudinal directions, and the vibration generating mechanism is connected by a connecting shaft and is further connected to the synchronous reversing mechanism. A drive source is provided.
When the drive source is rotated, the output end of the synchronous reversing mechanism is rotated in the opposite direction to the input end, and the vibration generating mechanisms are synchronously rotated in the opposite directions, resulting in an unbalanced pair of vibration generating mechanisms. An oscillating force is obtained by the rotation of the weight, and as described above, a linear motion or an elliptical motion is generated in the vibrating screen.

Further, the drive source, the synchronous reversing mechanism, and the connecting shaft are all provided at positions laterally isolated from the screen frame.

[Problems to be Solved by the Invention] However, the above-mentioned conventional drive device for a vibrating screen has the following technical problems.

1) Since the drive source, the synchronous reversing mechanism, and the connecting shaft are all provided at positions laterally separated from the sieve frame, the required size in the width direction of the vibrating sieve increases, and This limits the space usage on the side.

2) By using the synchronous reversing mechanism and the connecting shaft, the weight of the drive system of the vibrating screen is added, and it is not possible to reduce the weight, which is an essential problem of the vibrating screen.

3) In the machine-side space of the vibrating screen, the drive source, the synchronous reversing mechanism, and the pedestal supporting the connecting shaft, as well as the power supply wiring to the drive source, are provided, which results in a congested component arrangement. The machine side space of the vibrating screen cannot be made into a simple structure.

The present invention solves such a conventional problem,
It is an object of the present invention to provide an excellent vibrating screen drive device that avoids an increase in the size of the vibrating screen in the width direction, reduces the weight, and has a simple structure on the machine side space.

[Means for Solving the Problems] In order to achieve the above object, the present invention has
In a vibrating screen, in which two eccentric shafts extending in the width direction of a screen frame integrally formed with an unbalanced weight are arranged so as to be synchronously rotated in opposite directions to each other, Openings are formed at positions close to the eccentric shafts, and mounting bases are fitted and fixed to the both openings, respectively, and driving means are respectively fitted inside the mounting bases, and the output shafts of the driving means are eccentric. The transmission means connected to the input end of the shaft is provided so as to be adjacent to the outer surfaces of the both side plates.

[Operation] The present invention having the above-mentioned configuration has the following operation. That is, by the rotation of the driving means inserted into the mount of the sieve frame of the vibrating sieve, the two eccentric shafts are synchronously rotated in opposite directions via the transmission means to generate an oscillating force, and the vibrating sieve is linearly moved. Movements or elliptical movements can be given. Thus, it is possible to avoid increasing the size of the vibrating screen in the width direction,
Further, the components of the drive system can be omitted, the weight of the vibrating screen can be reduced, and the machine-side space of the vibrating screen can be simplified.

In addition, a tubular beam member having respective eccentric shafts is attached in the width direction of the screen frame, and is provided with sufficient rigidity to the screen frame against the load caused by the vibration force. be able to.

[Embodiment] FIG. 1 shows the configuration of an embodiment of the present invention.

In FIG. 1, 10 is a drive device for the vibrating screen, and 12 and 12A are respective screen frames provided on both sides of the vibrating screen.

14, 14A are driving means for the vibrating screen, and for example, an electric motor having a high starting torque characteristic is used.

16, 16 'denote eccentric shafts extending in the width direction of the screen frame and forming a pair. Both eccentric shafts 16 and 16' are integrally formed with unbalanced weights 16a and 16a 'with respect to their respective rotation axes. The shaft ends 16b, 16b 'forming the input ends at both ends are respectively supported by bearings 19, 19' and 19A, 19A 'provided on the side plates 12, 12A, and in the longitudinal direction of the sieve frame. Are installed separately.

Openings 24, 24A are formed at positions close to the eccentric shaft 16 in the longitudinal direction of the side plates 12, 12A, respectively, and the mounting base 2 is formed in the openings 24, 24A.
2,22A is fitted and fixed.

In this way, the mounting bases 22 and 22A are provided at the positions facing the side plates 12 and 12A. The driving means 14 and 14A are fitted inside the mounting bases 22 and 22A and fastened using bolt fastening means or the like.

Reference numerals 18 and 18A denote transmission means, and the output ends of the drive means 14 and 14A are connected to the shaft ends 16b and 16b 'that form the input ends of the pair of eccentric shafts 16 and 16'. The transmission means 18 and 18A are provided on both side plates 12 and 1.
It is attached close to the outer surface of 2A and uses a belt wheel or parallel gear train.

Reference numeral 18a denotes a belt transmission portion, which rotates the eccentric shaft 16 provided between the output ends of the driving means 14 and 14A and the shaft end portion 16b of the eccentric shaft 16. 18b is a first gear, and the shaft end 16b
18c indicates a second gear and is attached to the shaft end portion 16b 'of the other eccentric shaft 16'.
6'is rotated.

The first gear 18b corresponds to the eccentric shaft 16, and the second gear 18c corresponds to the eccentric shaft 16.
16 ', and since the first gear 18b and the second gear 18c have the same number of teeth, the two eccentric shafts 16, 16' are synchronized in opposite directions with the rotation of the driving means 14, 14A. It is rotating. Thus, an eccentric shaft 1 is included in a vibrating screen with side plates 12, 12A.
The rotation of 6,16 'gives the excitation force accompanying the rotation of the unbalanced weight. Further, by combining the respective weights and phases of the unbalanced weights 16a, 16a 'of the eccentric shafts 16, 16', a linear motion or an elliptical motion is given to the vibrating screen.

Next, the operation of the above embodiment will be described. In the above embodiment, when the driving means 14 is supplied with electric power and rotated, the belt transmission portion 18a of the transmission means 18 moves to the first gear 18b and the second gear 18b.
When the rotational force is transmitted to the gear 18c and the unbalanced weights 16a and 16a ′ of the eccentric shafts 16 and 16 ′ are synchronously rotated in the opposite directions, a reliable excitation force is applied to each of the side plates 12 and 12A. , It is possible to give the vibrating screen a linear or elliptical motion. Also,
Between the side plates 12 and 12A of the vibrating screen, tubular beam members 20 and 20 'in which eccentric shafts 16 and 16' are respectively enclosed in the width direction are attached, and the side plates 12 against the load due to the above-mentioned vibration force. Sufficient rigidity is given to 12A.

Drive means 14,14A, transmission means 18,18A and eccentric shafts 16,16 '
Since the shaft end portions 16b and 16b ′ of the vibrating sieve are attached in close proximity to the outer surfaces of the side plates 12 and 12A, respectively, it is possible to prevent the size of the vibrating sieve in the width direction from increasing, and The simplification of space can be significantly improved.

[Advantage of the Invention] According to the vibrating screen drive device of the present invention, the drive means is dispersed on both side plates of the screen frame and directly attached together with the transmission means, so that the drive device can be downsized. The required size of the vibrating screen in the width direction can be reduced, and the space on the machine side can be freely used.

Further, since the use of the conventional synchronous reversing mechanism and the connecting shaft can be eliminated, the weight of the vibrating screen can be reduced. Furthermore, since it is possible to avoid the congested component arrangement in the machine side space of the vibrating screen, it is possible to make the structure simple.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a driving device for a vibrating screen according to an embodiment of the present invention. 10 ... Drive device 12,12A ... Side plate 14,14A ... Drive means 16,16 '... Eccentric shaft 18,18A ... Transmission means 20,20' ... Beam member 22,22A ... Mounting base 24,24A ... Aperture

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-47-3238 (JP, A) JP-A-53-95369 (JP, A) Actual development 48-73873 (JP, U) Actual public 38- 3691 (JP, Y1) Actual public Sho 57-53661 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. An eccentric shaft integrally formed with unbalanced weights on both side plates of the screen frame and extending in the width direction of the screen frame is provided separately from each other so as to be synchronously rotated in opposite directions. In this vibrating screen, openings are formed in the both side plates at positions close to the eccentric shaft, and mounting bases are fitted and fixed in the openings, respectively, and driving means are fitted inside the mounting bases. A drive device for a vibrating screen, characterized in that a transmission means that is inserted and connects the output shaft of each drive means with the input end of the eccentric shaft is provided adjacent to the outer surfaces of the both side plates.