CN202398514U - Excitation device with single-axis linear motion track - Google Patents

Abstract

The utility model discloses a single-axis linear motion track excitation device, which comprises a vibration box, a base and an eccentric shaft, and the eccentric shaft is arranged on the vibration box; the four corners between the vibration box and the base are respectively arranged There is a track change mechanism, which includes a track change lever, a spring, a spring seat and a support shaft; the support shaft is fixed on the vibration box; the track change lever is arranged obliquely between the vibration box and the base, and the track change lever The upper end of the spring is vertically hinged on the support shaft, and the lower end is hinged on the base; the upper end of the spring is also vertically hinged on the support shaft, and the lower end is fixed on the base through the spring seat. The remarkable effect of the utility model is that the circular motion track of the single-axis vibration exciter is changed into a linear motion track by using the design of the track-changing mechanism, and the excitation effect and efficiency are improved.

Description

A single-axis linear motion track vibration device

technical field

The utility model relates to the technical field of vibrating machinery, in particular to an exciter assembly used in vibrating screens and feeders in mining machinery, more specifically a single-axis linear motion track exciter assembly.

Background technique

In the crusher industry, the vibrating screen or the feeder, which use a single shaft as the exciter, is the most typical structure and the most widely used model.

The motion trajectory generated by the single-axis vibrator is a circle, and the circular motion trajectory has both normal and tangential vibration components. The advantage of this is that critical materials are not easy to block holes on the screen. However, after the circular motion is combined with the spring motion in the vibrating box, the original motion trajectory is changed. The direct result is that the material only has up and down screening motion, but no horizontal conveying motion (very small horizontal component force). Therefore, all the vibration boxes in the market using single-axis exciters need to be tilted in order to use gravity to generate horizontal conveying movement. It is also because of the oblique position that the materials fall in a hurry, the screening is not sufficient, and the screening effect is not ideal.

In response to this situation, people have designed a dual-axis vibrator. The motion trajectory produced by the biaxial vibrator is a straight line. As long as the eccentric phase angle of the two axes is changed, the vibration direction angle can be adjusted, so that the material has both The vertical up and down sieving movement also has the horizontal conveying movement, so when the dual-axis vibrator is used, the vibrating box can be placed horizontally for use. However, the cost of an excitation shaft is not a small amount in terms of volume and weight alone, let alone a dual-axis excitation assembly. Furthermore, when adjusting the direction angle of the biaxial vibrator, it is necessary to open the vibrator and disassemble the ring gear, which is extremely inconvenient, and it is very easy to make mistakes when the user adjusts it by himself.

Utility model content

The purpose of this utility model is to provide a new uniaxial vibrator assembly device for the defects of the above-mentioned prior art uniaxial vibrator, such as material falling in a hurry, insufficient screening, and low screening effect. Motion trajectory, so as to achieve sufficient screening and good effect of single-axis linear motion trajectory vibration device.

In order to achieve the above purpose, the utility model is achieved through the following technical solutions: a single-axis linear motion track vibration device, including a vibration box, a base and an excitation shaft, and the vibration axis is arranged on the vibration box; the vibration box The four corners between the body and the base are respectively provided with a track change mechanism, which is characterized in that the track change mechanism includes a track change lever, a spring, a spring seat and a support shaft; the support shaft is fixed on the vibrating box; the track change lever Arranged obliquely between the vibrating box and the base, the upper end of the track changing rod is vertically hinged on the support shaft, and the lower end is hinged on the base; the upper end of the spring is also vertically hinged on the support shaft, and the lower end is fixed on the base through the spring seat.

The structural features of the utility model are (1) still using a single axis as the excitation source; (2) using the combination of the rail changing lever and the spring in the rail changing mechanism to prop up the vibrating box, changing the structure that only uses the spring all the time, so that the When the rail plays the role of support, it also plays the role of changing the motion track of the original single-axis vibrator, and makes the spring play the role of exciting and accumulating force during the vibration; (3) The vibration box does not need Tilted, can be used horizontally.

The vibration box of the equipment equipped with a single-axis vibrator in the prior art needs to be placed obliquely. The utility model still uses a single-axis vibrator, but can realize the flatness of the vibration box that can only be achieved by a dual-axis vibrator. This is the remarkable effect of the utility model.

Using the design of the track-changing mechanism, the circular motion trajectory of the single-axis vibrator is changed into a linear motion trajectory, which improves the excitation efficiency. The fulcrum is the center of the circle, and the length from the lower fulcrum to the upper fulcrum is used as the radius to perform a short swing motion (because the arc is very short, it is approximately a straight line, and the specific amplitude is closely related to the elasticity of the excitation spring). This movement limits the original uniaxial vibrator The circular motion trajectory can be changed into a linear motion trajectory, which is similar to the linear motion trajectory generated by the biaxial vibrator, and the vibration direction angle can be adjusted only by changing the inclination of the track changing lever. In this way, the defect that the material has only up and down screening movement but no horizontal conveying movement under the original circular motion trajectory is eliminated, so that the material has both vertical screening movement up and down and horizontal conveying movement.

After adding the auxiliary devices such as the above-mentioned oblique track changing rod, the vibration box in the single-axis vibrator equipment is changed from the uniform oblique position, and can be used horizontally, so that the material can be screened more fully and the screening effect is more ideal.

The stress of the spring is more reasonable: the spring is arranged vertically. Due to the horizontal force of the movement track and the lateral pressure, the spring is easy to bend and deform after a long time of action, and the vibration effect will slowly decrease. After the springs are also arranged obliquely, the vertical track lever is adapted to the angle of the excitation direction, so that the stress on the springs is always kept in its axial direction, which eliminates the above defects and prolongs the service life of the springs.

Beneficial effects: (1) simple structure and easy manufacture; (2) convenient use and maintenance, especially the adjustment of the vibration direction angle; (3) more reasonable stress of the spring and longer service life.

Preferably, the track changing rod is arranged perpendicular to the fixed axis line of the excitation axis.

The circular motion track of the original uniaxial vibrator moves on the plane where the end face of the exciting shaft is located. If it is not on this plane, the consequences will be instability, micro-vibration, or even deadlock. The fixed axis center line arrangement of the excitation shaft defines the motion on the track changing rod on this plane, and the resulting motion track is more stable and ideal.

Preferably, the track changing rods of the track changing mechanism on the four corners between the vibration box and the base are arranged in parallel.

All track-changing rods are arranged in parallel, so that the motion driven by the inertial force of the excitation axis is more orderly and unified, and finally it is more reasonable to combine with the circular motion of the original single-axis exciter.

Preferably, the track change lever is vertically arranged with the spring.

The stress of the spring is more reasonable: the spring is arranged vertically. Due to the horizontal force of the movement track and the lateral pressure, the spring is easy to bend and deform after a long time of action, and the vibration effect will slowly decrease. After the springs are also arranged obliquely, the vertical track lever is adapted to the angle of the excitation direction, so that the stress on the springs is always kept in its axial direction, which eliminates the above defects and prolongs the service life of the springs.

As preferably, the lower end of the rail change bar is hinged on an arc adjuster, the spring seat is also fixed on the arc adjuster, and the arc adjuster is arranged on the base; the arc adjuster includes a base, an arc slide plate and The arc-shaped guide groove is arranged on the base, and the arc-shaped sliding plate is arranged in the arc-shaped guide groove and locked by a locking bolt.

The acute angle between the track changing rod and the horizontal plane where the vibration box is located is the vibration direction angle. The direction angle is determined by the inclination angle of the track changing rod. Therefore, in order to facilitate the inclination adjustment of the track changing rod, an arc regulator is provided. Theoretically, it can be adjusted between 0-90°, usually within the range of 30°-60°.

Preferably, the track changing mechanism further includes a support seat, the support seat is fixed on the vibration box, and the support shaft is fixed on the support seat.

The left and right vibration balance of the vibration box is good, and the vibration effect is good. It is easy to modify the old product, directly drill screw holes on the original vibration box, then install the support base through bolts, and then weld the support shaft to the support base. It is even more convenient and easy to cast the support seat and the support shaft into an integral structure.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a schematic diagram of the motion trajectory of the utility model.

In the figure: 1-vibration box, 2-base, 3-exciting shaft, 4-rail change rod, 5-spring, 6-spring seat, 7-support shaft, 8-support seat, 9-base, 10 -arc guide groove, 11-arc slide plate, 12-lock bolt.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

Embodiment: As shown in Fig. 1, a kind of uniaxial linear motion track vibration device comprises a vibration box 1, a base 2 and an excitation shaft 3, the vibration shaft 3 is arranged on the vibration box 1, and the vibration box 1 The four corners between the base 2 and the base 2 are respectively provided with four parallel track changing mechanisms.

The structure of each track changing mechanism is as follows: the support shaft 7 is fixed on the support base 8 on the vibrating box body 1 . The track changing rod 4 is arranged obliquely between the vibration box 1 and the base 2. The upper end of the track changing rod 4 is vertically hinged on the support shaft 7, and the lower end is hinged on the arc-shaped slide plate 11. The track changing rod 4 is perpendicular to the excitation axis. 3's fixed axis setting.

The upper end of the spring 5 is also vertically hinged on the support shaft 7, and the lower end is fixed on the arc slide plate 11 by the spring seat 6. The rail changing bar 4 is arranged vertically with the spring 5 .

The arc-shaped guide groove 10 is arranged on the base 9 , and the arc-shaped sliding plate 11 is arranged in the arc-shaped guide groove 10 and locked by the locking bolt 12 .

The above is only the preferred embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the core technical features of the utility model. , These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (7)

1. single shaft straight-line trajectory exciting device, involving vibrations casing, base and vibrating shaft, vibrating shaft are arranged on the vibration casing; Be respectively arranged with one on four jiaos between vibration casing and the base and become the trailer structure, it is characterized in that, described change trailer structure comprises change rail bar, spring, spring base and back shaft; Back shaft is fixed on the vibration casing; Become oblique being arranged in of rail bar and vibrate between casing and the base, the upper end that becomes the rail bar is vertically hinged on the back shaft, and the lower end is hinged on the base; The upper end of spring also is vertically hinged on the back shaft, and the lower end is fixed on the base through spring base.

2. single shaft straight-line trajectory exciting device according to claim 1 is characterized in that, said change rail bar is perpendicular to the fixedly axial line setting of vibrating shaft.

3. single shaft straight-line trajectory exciting device according to claim 2 is characterized in that, the change rail bar of the change trailer structure between vibration casing and the base on four jiaos is arranged in parallel.

4. single shaft straight-line trajectory exciting device according to claim 1 is characterized in that, becomes rail bar and the perpendicular layout of spring.

5. according to claim 1 or 2 or 3 or 4 described single shaft straight-line trajectory exciting devices, it is characterized in that the lower end that becomes the rail bar is hinged on the arc adjuster, spring base also is fixed on this arc adjuster, and arc adjuster is arranged on the base; Arc adjuster comprises pedestal, arc skateboard and arc guide barrel, and arc guide barrel is arranged on the pedestal, and arc skateboard is arranged in the arc guide barrel and by clamping screw and locks.

6. according to claim 1 or 2 or 3 or 4 described single shaft straight-line trajectory exciting devices, it is characterized in that become the trailer structure and also include supporting seat, supporting seat is fixed on the vibration casing, back shaft is fixed on the supporting seat.

7. single shaft straight-line trajectory exciting device according to claim 5 is characterized in that, becomes the trailer structure and also includes supporting seat, and supporting seat is fixed on the vibration casing, and back shaft is fixed on the supporting seat.

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