CN219210654U - Vibrating screen overload protection device - Google Patents

Abstract

The utility model discloses an overload protection device of a vibrating screen, which comprises a transmission shaft, a central shaft and a PLC (programmable logic controller), wherein a driven friction disk is arranged on the transmission shaft, a driving friction disk is arranged on the central shaft, one end of the transmission shaft is fixedly connected with a first connecting sleeve, the other end of the transmission shaft is fixedly connected with the transmission disk, one side, far away from the transmission shaft, of the transmission disk is fixedly provided with the driven friction disk, and one end of the central shaft is sequentially and fixedly connected with a torque sensor and a second connecting sleeve. This vibrating screen overload protection device, when the initial start-up stage of vibrating screen, detect the moment of torsion that the motor bore through torque sensor, electric telescopic handle can drive driving disk, initiative friction disc according to the torsion value and remove, adjusts initiative friction disc, driven friction disc's real-time contact pressure to realize the adjustment to motor load, carry out overload protection to the motor.

Description

Vibrating screen overload protection device

Technical Field

The utility model relates to the technical field of vibrating screens, in particular to an overload protection device for a vibrating screen.

Background

The vibrating screen works by utilizing reciprocating rotary vibration generated by vibrator excitation. The upper rotary weight of the vibrator makes the screen surface produce plane rotary vibration, while the lower rotary weight makes the screen surface produce conical surface rotary vibration, and the combined effect of the upper rotary weight and the lower rotary weight makes the screen surface produce compound rotary vibration. The vibration track is a complex space curve. The curve is projected as a circle on the horizontal plane and as an ellipse on the vertical plane. The vibration force of the upper and lower rotary weights is adjusted to change the amplitude. And the curve shape of the movement track of the screen surface and the movement track of the material on the screen surface can be changed by adjusting the space phase angles of the upper heavy hammer and the lower heavy hammer.

The output shaft of driving motor on the shale shaker is connected with the vibration input shaft of shale shaker through the shaft coupling, carry out overload protection to driving motor when transmitting power, the shale shaker shaft coupling as disclosed in patent number CN201320734837.X, wherein be provided with the transition axle, the drive shaft, the friction disc, the driving disc, clamp plate isotructure, rely on the frictional force that produces between fixed mounting friction disc on the friction disc and the driving disc, it carries out sliding friction to reach the transmission power when the load is too big, carry out overload protection between friction disc and the driving disc, but wherein friction disc and clamp plate pass through the bolt fastening, after long-time use, wear appears between friction disc and the driving disc, lead to there is the clearance too big between friction disc and the driving disc, cause power transmission incomplete, probably can cause the transition axle unable condition emergence that drives the drive shaft and rotate, for this reason we propose a shale shaker overload protection device in order to solve above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an overload protection device for a vibrating screen, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a shale shaker overload protection device, includes transmission shaft, center pin, PLC controller, be provided with driven friction disk on the transmission shaft, be provided with initiative friction disk on the center pin, the first adapter sleeve of one end fixedly connected with of transmission shaft, other end fixedly connected with driving disk, one side fixed mounting that the transmission shaft was kept away from to the driving disk has driven friction disk, the one end fixedly connected with torque sensor in proper order of center pin, second adapter sleeve, other end fixedly connected with transition dish, one side fixed mounting that the center pin was kept away from to the transition dish has electric telescopic handle, and fixedly connected with pressure sensor on electric telescopic handle's the output shaft, pressure sensor's one end fixed mounting has the driving disk, one side fixed mounting that pressure sensor was kept away from to the driving disk has initiative friction disk, one side fixed mounting that the driving disk is close to electric telescopic handle has a plurality of guide bars, and guide bar and transition dish swing joint.

Preferably, the first connecting sleeve and the second connecting sleeve are both clamped with locking screws, and the ends of the locking screws can be transmitted to the inside of the first connecting sleeve or the second connecting sleeve.

Preferably, the driven friction disc and the driving friction disc are both clamped with connecting screws, the connecting screws on the driven friction disc can be in threaded connection with the transmission disc, and the connecting screws on the driving friction disc can be in threaded connection with the driving disc.

Preferably, the second connecting sleeve, the transition disc, the driving friction disc, the driven friction disc and the first connecting sleeve are all positioned on the same central axis, and the transition disc is provided with a threading hole.

Preferably, the outside of the central shaft is fixedly sleeved with a conductive slip ring, and the conductive slip ring is electrically connected with the torque sensor, the electric telescopic rod and the pressure sensor.

Preferably, the PLC is electrically connected with the torque sensor, the electric telescopic rod and the pressure sensor, the PLC can receive detection data of the torque sensor and the pressure sensor, and the start and stop of the electric telescopic rod are controlled by the PLC.

The utility model provides an overload protection device for a vibrating screen, which has the following beneficial effects:

1. this shale shaker overload protection device, when the initial start-up stage of shale shaker, detect the moment of torsion that the motor bore through torque sensor, electric telescopic handle can drive driving disk, initiative friction disc and remove according to the torsion value, adjust initiative friction disc, the real-time contact pressure of driven friction disc, thereby realize the adjustment to the motor load, overload protection is carried out the motor, avoid the motor to damage, the initiative friction disc can be according to pressure sensor's detection pressure adjustment position simultaneously, guarantee the steady transmission power between initiative friction disc, the driven friction disc, the influence that the reduction wearing and tearing caused.

2. This shale shaker overload protection device, when the driving disk removes, lead through the guide bar, guarantee the stability of driving disk during operation, the accessible guide bar transmits torsion between transition dish, driving disk, has guaranteed the harmless transmission of power, avoids torsion to act on electric telescopic handle simultaneously, avoids electric telescopic handle to damage.

Drawings

FIG. 1 is a schematic diagram of the overall assembled structure of the present utility model;

FIG. 2 is a schematic diagram of the overall front view of the present utility model;

FIG. 3 is a schematic diagram of an explosion of the transmission structure of the present utility model;

FIG. 4 is a schematic view of the friction disk connection of the present utility model;

fig. 5 is a schematic structural view of the cooperation of the transition disc and the guide rod.

In the figure: 1. a transmission shaft; 2. a first connection sleeve; 3. a drive plate; 4. a driven friction plate; 5. a central shaft; 6. a torque sensor; 7. a second connection sleeve; 8. a transition disc; 9. an electric telescopic rod; 10. a pressure sensor; 11. a drive plate; 12. an active friction plate; 13. a guide rod; 14. a conductive slip ring; 15. a locking screw; 16. a connecting screw; 17. and a PLC controller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 and 2, the present utility model provides a technical solution: the utility model provides a vibrating screen overload protection device, which comprises a transmission shaft 1, a central shaft 5, a PLC controller 17, be provided with driven friction disk 4 on the transmission shaft 1, be provided with initiative friction disk 12 on the central shaft 5, the one end fixedly connected with first adapter sleeve 2 of transmission shaft 1, the other end fixedly connected with driving disk 3, one side fixed mounting that driving disk 3 kept away from transmission shaft 1 has driven friction disk 4, the one end fixedly connected with torque sensor 6 in proper order of center shaft 5, second adapter sleeve 7, the other end fixedly connected with transition dish 8, one side that transition dish 8 kept away from central shaft 5 has electric telescopic handle 9, and fixedly connected with pressure sensor 10 on the output shaft of electric telescopic handle 9, electric telescopic handle 9 can be according to the position of pressure sensor 10's detection pressure adjustment initiative friction disk 12, guarantee that can steadily transmit power between initiative friction disk 12, the driven friction disk 4, the influence caused by abrasion is reduced, one end of the pressure sensor 10 is fixedly provided with a driving disc 11, one side of the driving disc 11 away from the pressure sensor 10 is fixedly provided with an active friction disc 12, the torque sensor 6 detects the torque born by a motor, the electric telescopic rod 9 can drive the driving disc 11 and the active friction disc 12 to move according to the torque value, the real-time contact pressure of the active friction disc 12 and the driven friction disc 4 is adjusted, so that the adjustment of the motor load is realized, the overload protection is carried out on the motor, one side of the driving disc 11 close to the electric telescopic rod 9 is fixedly provided with a plurality of guide rods 13, the guide rods 13 are movably connected with the transition disc 8, the guide rods 13 are used for guiding, the stability of the driving disc 11 during operation is ensured, the torque can be transmitted between the transition disc 8 and the driving disc 11 through the guide rods 13, the nondestructive transmission of power is ensured, the PLC controller 17 is electrically connected with the torque sensor 6, the electric telescopic rod 9 and the pressure sensor 10, the PLC controller 17 can receive detection data of the torque sensor 6 and the pressure sensor 10, the PLC controller 17 receives the detection data and controls the electric actuating mechanism according to the detection data, the principle and the using process of the PLC controller are not repeated here, the electric telescopic rod 9 is started and stopped under the control of the PLC controller 17, the PLC controller 17 can control the electric telescopic rod 9 according to the detection torque of the torque sensor 6, the electric telescopic rod 9 drives the driving friction disc 12 to move, and the contact pressure of the driving friction disc 12 and the driven friction disc 4 is adjusted.

Referring to fig. 3, 4 and 5, the first connecting sleeve 2 and the second connecting sleeve 7 are respectively clamped with a locking screw 15, the end part of the locking screw 15 can be transmitted into the first connecting sleeve 2 or the second connecting sleeve 7, the first connecting sleeve 2 can be installed on the input shaft of the vibrating screen through the locking screw 15, the second connecting sleeve 7 is installed on the input shaft of the driving motor through the locking screw 15, the driving motor can supply power for the vibrating screen, the driving friction disk 4 and the driving friction disk 12 are respectively clamped with a connecting screw 16, the connecting screws 16 on the driving friction disk 4 can be in threaded connection with the transmission disk 3, the connecting screws 16 on the driving friction disk 12 can be in threaded connection with the driving disk 11, the stability after the driving friction disk 12 and the driving friction disk 4 are installed is ensured, simultaneously be convenient for follow-up change, second adapter sleeve 7, transition dish 8, initiative friction disk 12, driven friction disk 4, first adapter sleeve 2 all are in same axis, power can be stably transmitted when the device is rotatory guaranteed, the threading hole has been seted up on the transition dish 8, be convenient for wear out the circuit of electric telescopic handle 9, pressure sensor 10 and be connected with electrically conductive sliding ring 14, the outside fixed cover of center pin 5 is equipped with electrically conductive sliding ring 14, and electrically conductive sliding ring 14 and torque sensor 6, electric telescopic handle 9, pressure sensor 10 electric connection, accessible electrically conductive sliding ring 14 is connected the circuit of torque sensor 6, electric telescopic handle 9, pressure sensor 10, it still can supply power or control each structure when the device rotates to guarantee.

In sum, this vibrating screen overload protection device, when in use, install second adapter sleeve 7 on driving motor's output shaft through locking screw 15, and install first adapter sleeve 2 on vibrating screen's input shaft through locking screw 15, install PLC controller 17 in vibrating screen's switch board, and establish electric connection with PLC controller 17 and torque sensor 6, electric telescopic handle 9, pressure sensor 10, driving motor drives vibrating screen during operation, at the start-up initial stage, driving motor bears the load great, torque sensor 6 detects the moment of torsion that the motor bears, and with data transmission to PLC controller 17, PLC controller 17 controls electric telescopic handle 9 according to the load, when the load surpasses the threshold value, electric telescopic handle 9 drives pressure sensor 10, driving disc 11, driving friction disc 12 moves to the one side of keeping away from driven friction disc 4, thereby reduce the contact pressure between driving friction disc 12, the driven friction disc 4, reduce the transmission of power, reduce driving motor's load, after the vibrating screen starts completely, electric telescopic handle 9 detects pressure sensor 12, and constant pressure sensor 12 is moved through driving friction disc 11, can be guaranteed to the constant friction disc 12, the power transmission between driving friction disc 12 and the driven friction disc is guaranteed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a shale shaker overload protection device, includes transmission shaft, center pin, PLC controller, be provided with driven friction disk on the transmission shaft, be provided with initiative friction disk on the center pin, its characterized in that: one end fixedly connected with first adapter sleeve, the other end fixedly connected with driving disk of transmission shaft, one side fixed mounting that the driving disk kept away from the transmission shaft has driven friction disk, one end fixedly connected with torque sensor, second adapter sleeve in proper order of center pin, the other end fixedly connected with transition dish, one side fixedly mounted that the center pin was kept away from to the transition dish has electric telescopic handle, and fixedly connected with pressure sensor on electric telescopic handle's the output shaft, pressure sensor's one end fixedly mounted has the driving disk, one side fixedly mounted that the driving disk kept away from pressure sensor has initiative friction disk, one side fixedly mounted that the driving disk is close to electric telescopic handle has a plurality of guide bars, and guide bar and transition dish movable connection.

2. A vibrating screen overload protection device as claimed in claim 1 wherein: locking screws are clamped on the first connecting sleeve and the second connecting sleeve, and the end parts of the locking screws can be transmitted to the inside of the first connecting sleeve or the second connecting sleeve.

3. A vibrating screen overload protection device as claimed in claim 1 wherein: the inside joint of driven friction disc, initiative friction disc has connecting screw, connecting screw on the driven friction disc can with driving disk threaded connection, connecting screw on the initiative friction disc can with driving disk threaded connection.

4. A vibrating screen overload protection device as claimed in claim 1 wherein: the second connecting sleeve, the transition disc, the driving friction disc, the driven friction disc and the first connecting sleeve are all positioned on the same central axis, and the transition disc is provided with a threading hole.

5. A vibrating screen overload protection device as claimed in claim 1 wherein: the outside fixed cover of center pin is equipped with electrically conductive sliding ring, and electrically conductive sliding ring and torque sensor, electric telescopic handle, pressure sensor electric connection.

6. A vibrating screen overload protection device as claimed in claim 1 wherein: the PLC is electrically connected with the torque sensor, the electric telescopic rod and the pressure sensor, the PLC can receive detection data of the torque sensor and the pressure sensor, and the start and stop of the electric telescopic rod are controlled by the PLC.

Images