Full-automatic deviation rectifying device of belt conveyor

Abstract

The utility model provides a full-automatic deviation rectifying device of a belt conveyor, which comprises deviation detecting devices, a rotating device, a transmission mechanism, a control device, an arc-shaped track and a base, the deviation detecting devices are arranged in pairs and consist of terminals, contacts, movable arms, angular displacement sensors, a machine body and a support, the machine body is of a cylindrical structure, and the rotating device is arranged on the base. A movable arm is movably arranged at the circle center of the bottom face of one end of the machine body in the radial direction, a contact is arranged at the top end of the movable arm, a wiring end is further arranged on the outer side of the machine body, and the angular displacement sensor is arranged on the inner side of the machine body. The surface of the surface-increasing deviation-rectifying roller group is covered with rhombic patterns, so that the friction force of bidirectional rotation with the conveying belt is improved, the deviation-rectifying force is increased, and the deviation-rectifying speed is increased; the section of the arc-shaped rail adopts an upper-ladder lower-square structure, so that the anti-bending section modulus is large, the strength and the rigidity are high, and the stability and the safety of the rail are ensured. The deviation adjusting angle is accurately controlled by the PLC, and intelligent unattended operation is achieved.

Description

Technical Field

[0001] The utility model relates to a belt conveyor deviation rectifying device, in particular to a device for full-automatic deviation rectifying of a belt conveyor. Background Art

[0002] When using a belt conveyor to convey various bulk materials, during the production process, when the belt conveyor on the upper layer of the transfer station transfers materials to the belt conveyor on the lower layer, due to factors such as the belt speed, drop, gravitational acceleration, the structural shape of the hopper and chute, and the induced air volume, the materials do not fall on the center of the belt of the lower-layer belt conveyor, but often fall on the edge of the belt along the chute. Since the conveyor belt is made of flexible material and has a certain sag between two idlers, under the impact of the materials, the belt on the stressed side deviates from the idler, causing the conveyor belt to run off track, material leakage, dust pollution to the environment, affecting production, and seriously leading to production suspension. In the prior art, methods such as changing the structure of the head hopper and chute, adding a movable baffle in the middle to reduce the material drop; using idler deviation rectification; hydraulic idler deviation rectification, guide rail deviation rectification, etc. are adopted. There are problems such as low guide rail strength, small deviation rectifying force, slow deviation rectifying speed, and low deviation rectifying efficiency. Summary of the Invention

[0003] To make up for the deficiencies of the prior art, the purpose of the utility model is to provide a full-automatic deviation rectifying device for a belt conveyor to solve the problem of the conveyor belt running off track during the transfer process.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0005] A full-automatic deviation rectifying device for a belt conveyor includes a deviation detection device, a rotating device, a transmission mechanism, a control device, an arc-shaped track and a base. The deviation detection devices are arranged in pairs and are composed of a terminal, a contact, a movable arm, an angular displacement sensor, a body and a bracket. The body is of a cylindrical structure and is radially inclined inwardly on the bracket. A movable arm is radially movably arranged at the center of the bottom surface of one end of the body. A contact is arranged at the top end of the movable arm. A terminal is also arranged on the outer side of the body. The angular displacement sensor is arranged inside the body.

[0006] The arc-shaped track is of a concentric circle structure and is composed of two circular tracks. The cross-section of the arc-shaped track is of a trapezoid-on-top-and-square-on-bottom structure.

[0007] The rotating device includes an extended surface deviation rectifying roller group, a moving rotary vehicle, a track cleaning device and a rotating frame body. The moving rotary vehicle is connected to the rotating frame body and is horizontally arranged in pairs inside the arc-shaped track. The axial two ends of the extended surface deviation rectifying roller group are connected to the moving rotary vehicle through bearings.

[0008] The surface of the surface-enhancing and deflection-correcting roller group is covered with a rubber layer with a diamond pattern.

[0009] A rolling bearing is arranged at the bottom of the rotating frame and is rollingly connected to the base.

[0010] Rolling wheels are arranged under the mobile carousel, which are rollingly connected with the arc-shaped track. The tread of the rolling wheels is hemispherical. Track cleaning devices are arranged at both ends of the mobile carousel.

[0011] The track cleaning device comprises a rubber scraper, a pressure plate and a bolt connection piece, wherein the cross section of the rubber scraper matches the cross section of the circular arc track.

[0012] The transmission mechanism comprises a gear reduction motor, a reducer and a transmission lead screw, and the gear reduction motor is sequentially connected to the rotating frame through the reducer and the transmission lead screw.

[0013] The control device comprises a PLC controller and a sensor arranged at the rear end of the transmission mechanism.

[0014] The transmission mechanism is a hydraulic transmission device.

[0015] Compared with the prior art, the beneficial effects are:

[0016] When the deviation of the conveyor belt is detected by the deviation detection device, the detection signal is transmitted to the control device, and the control device controls the rotation of the rotating device through the transmission mechanism. Since the surface of the surface-increasing and deflection-correcting roller group in the rotating device is covered with diamond patterns, it can increase the friction with the conveyor belt regardless of whether it rotates clockwise or counterclockwise, increase the deflection-correcting force and speed up the deflection-correcting speed; the arc track section adopts an upper ladder and lower square structure. Compared with the traditional track trapezoidal section, the upper ladder and lower square section has a large bending section modulus, high strength and rigidity, and can ensure the stability and safety of the arc track. The track cleaning device adopts a rubber scraper, which cleans cleanly, has low resistance and no noise compared with the traditional rigid scraper. The deviation adjustment angle can be accurately controlled by the PLC controller, and the output speed of the gear reduction motor is used to calculate the telescopic length of the transmission screw, and then the rotation angle of the mobile carousel, that is, the rotation angle of the surface-increasing and deflection-correcting roller, is calculated to achieve intelligent unattended operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 It is a side view structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the deviation detection device of the utility model;

[0021] Figure 5 is a schematic cross-sectional view of the arc-shaped track structure of the present utility model;

[0022] Figure 6 is a schematic view of the electrical control box structure of the present utility model;

[0023] In the figure: 1. deviation detection device, 2. additional surface deviation correction roller group, 3. moving rotary vehicle, 4. track cleaning device, 5. rotating frame body, 6. base, 7. transmission mechanism, 8. PLC controller, 9. arc-shaped track, 10. transmission lead screw, 11. electrical control box, 12. threading pipe, 13. wiring terminal, 14. contact, 15. movable arm, 16. angular displacement sensor, 17. machine body, 18. support, 19. upper idler of belt conveyor. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model. Embodiment

[0025] As Figures 1-3 shown, a fully automatic belt conveyor deviation correction device, the deviation detection device 1 is fixed on the middle frames on both sides of the upper belt surface of the belt conveyor through connecting pieces. The bearing seats of the additional surface deviation correction roller group 2 are fixed on the moving rotary vehicle 3. The arc-shaped track 9 is a concentric circle structure and is composed of two circular tracks. The moving rotary vehicles 3 are arranged in pairs, and the rolling wheels below are in rolling contact with the arc-shaped track 9. A pair of moving rotary vehicles 3 are connected through the rotating frame body 5. The additional surface deviation correction roller group 2, the moving rotary vehicle 3 and the rotating frame body 5 are driven by the transmission mechanism 7. The arc-shaped track 9 is fixed on the base, and the middle lower part of the rotating frame body 5 is rotatably connected to the base 6 through a rolling bearing. Embodiment

[0026] The diameter of the additional surface deviation correction roller 2 and the bearing model at the bearing seat installation can vary according to the tension at the additional surface roller of the belt conveyor and the height of the lower belt surface. The surface 2 of the additional surface deviation correction roller is covered with a diamond-shaped rubber layer, which can increase the friction between the surface 2 of the additional surface deviation correction roller and the conveyor belt during bidirectional rotation, thereby increasing the deviation correction force and accelerating the deviation correction speed. Embodiment

[0027] The transmission mechanism is a mechanical transmission structure, including a gear reduction motor, a reducer, and a transmission lead screw. The reducer is a set of meshing gear structures. The output shaft of the gear reduction motor is connected to the input end of the reducer, and the output end of the reducer is connected to the transmission lead screw 10. One end of the transmission lead screw 10 is hinge-connected to the rotating frame body 5. During operation, the output shaft of the gear reduction motor is connected to one of the gears in the reducer, and a nut is installed at the shaft hole of the other gear in the reducer. The nut is in transmission connection with the transmission lead screw 10, thereby converting the rotational motion of the gear reduction motor and the reducer into the linear motion of the transmission lead screw 10. The forward or reverse rotation of the gear reduction motor will cause the transmission lead screw 10 to extend or retract. Embodiment

[0028] The transmission mechanism is a hydraulic transmission structure, including an electro-hydraulic push rod, an electro-hydraulic angle converter, gears, a rack, and an optoelectronic sensor. Compared with the mechanical transmission mechanism, it has high deviation correction accuracy, but has high requirements for the working environment. Embodiment

[0029] The cross-section of the arc-shaped track 9 is trapezoidal at the top and square at the bottom. The end of the moving slewing vehicle 3 is provided with a track cleaning device 4 that matches the cross-sectional shape of the arc-shaped track 9 to clean the materials scattered in the arc-shaped track 9. Rolling wheels are provided below the moving slewing vehicle 3 to facilitate rolling on the arc-shaped track 9. A sensor is installed at the end of the gear reduction motor to transmit the output revolution of the gear reduction motor to the PLC controller. Embodiment

[0030] The wiring terminal of the deviation detection device 1 is connected to the PLC controller 8 through the cable in the threading pipe 12. Embodiment

[0031] The transmission mechanism 7 is connected to the PLC controller 8 through the cable in the threading pipe 12. Embodiment

[0032] The deviation is adjusted by using the surface-increasing deviation correction roller group 2, which is mechanically powered, has a large deviation adjustment force, a fast deviation adjustment speed, flexible actions, and is stable and reliable. It can not only play a role in deviation correction but also replace the function of the tail surface-increasing roller group.

[0033] The deviation rectification working procedure of the present utility model is as follows: when the conveyor belt of the belt conveyor runs off track, the contacts 14 of the deviation detection device 1 installed on both sides of the belt surface of the belt conveyor are squeezed by the side of the conveyor belt, generating a deflection angle. The deviation detection device 1 transmits the detected analog signal to the PLC controller 8 in the electric control box. The PLC controller 8 issues an instruction to control the transmission screw 10 of the transmission mechanism 7 to extend or retract, thereby driving the surface-increasing deviation rectification roller group 2 above the moving rotary vehicle 3 and the rotating frame body 5 below to rotate. While the surface-increasing deviation rectification roller 2 rotates by friction with the conveyor belt, it rotates clockwise or counterclockwise, so that the conveyor belt running off track is quickly corrected. When the conveyor belt does not run off track, the contacts 14 of the deviation detection device 1 return to the position where the deflection angle is zero, and the rotation angle of the surface-increasing deviation rectification roller group 2 is zero. It can ensure the stable and normal operation of the conveyor belt without manual intervention. Embodiment

[0034] Proximity limit switches are installed at both ends of the stroke of the transmission screw 10 to effectively control the working stroke of the moving rotary vehicle 3 and avoid the occurrence of derailment accidents of the moving rotary vehicle 3 caused by over-stroke. Embodiment

[0035] Rubber scraping plates are installed on the contact surfaces of both ends of the moving rotary vehicle 3 with the trapezoidal track to clean the materials falling on the track surface at any time during the deviation rectification work, avoiding the occurrence of jamming phenomena during the operation of the moving rotary vehicle 3 and affecting the deviation rectification.

[0036] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An automatic belt conveyor deviation rectifying device, comprising a deviation detection device, a rotating device, a transmission mechanism, a control device, an arc-shaped track and a base, characterized in that, The deviation detection devices (1) are arranged in pairs and are composed of a terminal (13), a contact (14), a movable arm (15), an angular displacement sensor (16), a body (17) and a bracket (18). The body (17) is of a cylindrical structure and is radially and inwardly inclined and arranged on the bracket (18). A movable arm (15) is radially movably arranged at the center of the bottom surface of one end of the body (17). A contact (14) is arranged at the top end of the movable arm (15). A terminal (13) is further arranged on the outer side of the body (17). The angular displacement sensor (16) is arranged on the inner side of the body (17).

2. The full-automatic belt conveyor deviation rectifying device according to claim 1, characterized in that The arc-shaped track (9) is of a concentric circle structure and is composed of two circular tracks. The cross-section of the arc-shaped track (9) is of a structure with a trapezoid on the top and a rectangle on the bottom.

3. The full-automatic belt conveyor deviation rectifying device according to claim 1, characterized in that, The rotating device includes an area-increasing deviation-correcting roller group (2), a moving rotary vehicle (3), a track cleaning device (4) and a rotating frame body (5). The moving rotary vehicle (3) is connected with the rotating frame body (5) and is horizontally arranged in pairs in the arc-shaped track (9). Axial ends of the area-increasing deviation-correcting roller group (2) are connected with the moving rotary vehicle (3) through bearings.

4. The fully automatic belt conveyor deviation rectifying device according to claim 3, characterized in that, The surface of the area-increasing deviation-correcting roller group (2) is covered with a rubber layer with diamond patterns.

5. The full-automatic belt conveyor deviation rectification device according to claim 3, characterized in that, A rolling bearing is arranged at the bottom of the rotating frame body (5) and is in rolling connection with the base (6).

6. The full-automatic belt conveyor deviation rectifying device according to claim 3, characterized in that, Rolling wheels are arranged below the moving rotary vehicle (3) and are in rolling connection with the arc-shaped track (9). The tread surface of the rolling wheels is hemispherical. Track cleaning devices (4) are arranged at both ends of the moving rotary vehicle (3).

7. The automatic deviation rectification device for a belt conveyor according to claim 3, characterized in that, The track cleaning device (4) includes a rubber scraper, a pressing plate and bolt connecting pieces. The cross-section of the rubber scraper matches the cross-section of the arc-shaped track (9).

8. The fully automatic belt conveyor deviation correction device according to claim 1, characterized in that, The transmission mechanism includes a gear reduction motor, a reducer and a transmission lead screw (10). The gear reduction motor is sequentially in transmission connection with the rotating frame body (5) through the reducer and the transmission lead screw (10).

9. The fully automatic belt conveyor deviation rectifying device according to claim 1, characterized in that, The control device includes a PLC controller and a sensor arranged at the end of the transmission mechanism.

10. The fully automatic belt conveyor deviation rectifying device according to claim 1, characterized in that, The transmission mechanism is a hydraulic transmission device.

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