Conveyor belt breakage protection device of belt conveyor

Abstract

The utility model discloses a conveyor belt breakage protection device of a belt conveyor, which comprises a base, a double-slope roller frame mounted at the top end of the base in a bolting manner, side frames mounted on the inner walls of the left and right slopes of the double-slope roller frame in a bolting manner, and a hollow middle frame mounted on the bottom wall of the double-slope roller frame between the two side frames, a supporting shaft is fixed between the outer walls of the opposite sides of the side frames and the hollowed-out middle frame, a cylinder barrel is fixed to the peripheral face of the supporting shaft, and a pneumatic belt breaking and pressing assembly is installed on the outer wall of the side frame above the cylinder barrel. When the belt conveyor works, the laser sensor in the hollow middle frame continuously monitors the surface condition of the conveying belt, when the section of the belt is detected, the electromagnetic valve controller drives the pneumatic belt breaking and pressing assembly to start to work, and the pneumatic belt breaking and pressing assembly presses the conveying belt on the cylinder barrel. Therefore, the roller frame function and the belt breakage protection function are integrated on one machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveying belt protection, specifically to a conveying belt breakage protection device of belt conveyor. BACKGROUND

[0002] The belt conveyor's breakage protector aims to monitor the running state of the conveying belt in real time, timely find faults such as breakage, deviation or tension abnormality, and when detecting that the conveying belt is abnormal, the protector will issue an alarm and quickly cut off the power or stop the conveyor operation, avoiding further damage to the equipment or causing safety accidents. Its structure is mainly composed of sensors, control units, alarms and actuators, and mechanical supports. The sensor part is responsible for monitoring the tension, deviation or pressure change of the conveying belt, and transmits the signal to the control unit; the control unit analyzes and judges whether there is an abnormality, and triggers the alarm and stop device when necessary; the actuator is responsible for implementing the power-off or stop operation, ensuring that the conveying belt is timely handled when a fault occurs. During operation, the sensor continuously monitors the state of the conveying belt, and the control unit judges whether there is an abnormality according to the sensor signal. Once a breakage or deviation is detected, the alarm system is immediately started and the power is cut off to prevent the accident from expanding. After the fault is eliminated, the operator can manually reset the protector and the equipment returns to normal operation; However, the current conveying belt breakage protector and the roller stand of the belt conveyor are two independent devices, and the staff needs to complete the arrangement of the roller stand first, and then install and arrange the conveying belt breakage protector. Since the breakage protector needs to be installed separately after the roller stand is arranged, the construction process becomes cumbersome, and the staff must complete the installation of the roller stand and the protector in a certain order, which prolongs the overall construction time, and the existence of two independent devices also means that more space is occupied, especially in a factory environment with limited space, which will affect the layout of the site and subsequent maintenance operations. SUMMARY

[0003] The utility model aims at providing a kind of conveying belt breakage protection device of belt conveyor, and the left and right inner walls of double-slope roller stand are all bolted and installed side frame, and the side frame and hollow middle frame are fixedly installed cylinder for supporting conveying belt, when belt conveyor works, laser sensor in hollow middle frame continuously monitors the surface condition of conveying belt, when detecting the belt section, electromagnetic valve controller drives pneumatic breakage and pressing belt assembly to start working, and pneumatic breakage and pressing belt assembly is used to press conveying belt on cylinder, to solve the problems raised in the above background.

[0004] In order to realize the above object, the utility model provides the following technical scheme: a kind of belt conveyor's conveying belt breakage protection device, including base, double-slope face roller frame being bolted and installed at the top end of base, side frame being bolted and installed on the inner wall of left and right side slope of double-slope face roller frame and hollow middle frame being installed on the bottom wall of double-slope face roller frame between two side frames, support shaft is fixed between the opposite side outer wall of side frame, hollow middle frame, and cylinder barrel is fixed on the outer circumferential surface of support shaft, pneumatic belt breakage and pressing assembly is installed on the outer wall of side frame above cylinder barrel, V-shaped folding table is welded on one side inside hollow middle frame, and laser sensor is installed at the top of both sides of V-shaped folding table and the center position of top, electromagnetic valve controller is installed on one side of the top of base, the output end of electromagnetic valve controller is electrically connected with the input end of pneumatic belt breakage and pressing assembly, and the input end of electromagnetic valve controller is electrically connected with the output end of laser sensor.

[0005] Preferably, one side of the top of the hollow middle frame is provided with a concave portion, and the V-shaped folding table is welded in the concave portion of the hollow middle frame.

[0006] Preferably, the base, the hollow middle frame and the double-slope face roller frame are all made of aluminum alloy components.

[0007] Preferably, the pneumatic belt breakage and pressing assembly comprises a cylinder hingedly installed on one side of the outer wall of the side frame, a rotating shaft rotatably installed on one side of the outer wall of the side frame, a hollow double-layer roller frame fixed on the surface of the rotating shaft, and an upper pull arm fixedly welded on one side of the top of the hollow double-layer roller frame, the top of the upper pull arm and the top of the piston rod of the cylinder are hingedly connected, and a steel roller is fixed in the hollow double-layer roller frame.

[0008] Preferably, a U-shaped joint is fixed on the top of the piston rod of the cylinder, and the top of the upper pull arm extends into the U-shaped joint and is hingedly connected with the U-shaped joint.

[0009] Preferably, the hollow double-layer roller frame is composed of a hollow column and straight-tube side plates fixedly welded on both ends of the surface of the hollow column, the steel roller is bolted and fixed between the two straight-tube side plates, and the bottom end of the upper pull arm is welded with the outer wall of the hollow column.

[0010] Compared with the prior art, the beneficial effects of the utility model are that the conveying belt breakage protection device of the belt conveyor makes the left and right inner walls of the double-slope roller frame all be bolted with side frames, and makes the side frames and the hollow middle frame be fixedly installed with cylinder barrels for supporting the conveying belt, when the belt conveyor works, the laser sensors in the hollow middle frame continuously monitor the surface condition of the conveying belt, when the belt breakage is detected, the electromagnetic valve controller drives the pneumatic belt breakage pressing assembly to start working, and the conveying belt is pressed on the cylinder barrels by the pneumatic belt breakage pressing assembly, so that the roller frame function and the belt breakage protection function are integrated on one device; wherein the supporting and belt breakage protection functions are integrated in one device, the multiple components that need to be separately installed in the traditional way are reduced, so that the space is saved, and the maintenance personnel can complete the equipment inspection and debugging in a short time, the maintenance cost and complexity are reduced; secondly, the multiple laser sensors in the hollow middle frame continuously monitor the surface state of the conveying belt, can capture the belt surface abnormality or breakage in real time, when the abnormal signal is detected, the electromagnetic valve controller immediately drives the pneumatic belt breakage pressing assembly to start, and the conveying belt is pressed on the cylinder barrels, this linkage mechanism realizes the quick connection of measurement, judgment and action, ensures that the problem of the belt surface is handled in the first time, greatly reduces the possibility and loss of accidents. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the front view structural schematic diagram of the utility model;

[0012] Figure 2 It is the three-dimensional structure schematic diagram of the utility model Figure One ;

[0013] Figure 3 It is the three-dimensional sectional structure schematic diagram of the utility model;

[0014] Figure 4 It is the side view sectional structure schematic diagram of the utility model;

[0015] Figure 5 It is the three-dimensional structure schematic Figure Two .

[0016] In the drawing: 1, base; 2, double-slope roller frame; 3, side frame; 4, hollow middle frame; 5, V-shaped folding table; 6, laser sensor; 7, pneumatic belt breakage pressing assembly; 701, air cylinder; 702, U-shaped joint; 703, rotating shaft; 704, hollow double-layer roller frame; 705, upper pull arm; 706, steel roller; 8, supporting shaft; 9, cylinder barrel; 10, electromagnetic valve controller. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figures 1-5 The utility model provides a kind of embodiment: the conveying belt protection device of belt conveyor, including base 1, the double-slope face roller frame 2 of double-slope face roller frame 2 top end bolted installation, the side frame 3 bolted installation on the left and right side slope inner wall of double-slope face roller frame 2 and the hollow middle frame 4 of installation on the bottom wall of double-slope face roller frame 2 between two side frames 3, support shaft 8 is fixed between the opposite side outer wall of side frame 3, hollow middle frame 4, and cylinder barrel 9 is fixed on the outer circumferential surface of support shaft 8, pneumatic broken belt pressing belt assembly 7 is installed on the outer wall of side frame 3 above cylinder barrel 9, one side of the inside of hollow middle frame 4 is welded with V-shaped folding table 5, and laser sensor 6 is installed at the two sides of the top end of V-shaped folding table 5 and the central position of the top end, one side of the top end of base 1 is installed with solenoid valve controller 10, the output end of solenoid valve controller 10 is electrically connected with the input end of pneumatic broken belt pressing belt assembly 7, and the input end of solenoid valve controller 10 is electrically connected with the output end of laser sensor 6;

[0019] Solenoid valve controller 10 should set reasonable trigger threshold according to actual working condition, avoid misoperation or delay response, and ensure reliable connection of control circuit in operation, to avoid failure of protection system due to electrical fault;

[0020] Laser sensor 6 detects whether the belt surface is abnormal by reflection or shielding detection on the surface of conveying belt, immediately transmits information to solenoid valve controller 10 when detecting abnormal signal, and starts broken belt protection program after receiving sensor signal and pre-set logic judgment, so that pneumatic broken belt pressing belt assembly 7 releases pressure by controlling gas source, and rapidly presses both sides of conveying belt to prevent belt surface from continuing to damage or fall off;

[0021] One side of the top end of hollow middle frame 4 is provided with concave part, V-shaped folding table 5 is welded in the concave part of hollow middle frame 4, and base 1, hollow middle frame 4 and double-slope face roller frame 2 are all made of aluminum alloy components;

[0022] Support shaft 8 fixedly installed between side frame 3 and hollow middle frame 4 and cylinder barrel 9 fixed on the surface of support shaft 8 are used for guiding conveying belt, to ensure that belt surface is on normal running track;

[0023] The pneumatic belt breaking and pressing assembly 7 comprises a cylinder 701 hingedly mounted on one side of the outer wall of the side frame 3, a rotating shaft 703 rotatably mounted on one side of the outer wall of the side frame 3, a hollow double-layer roller holder 704 fixed on the surface of the rotating shaft 703, and an upper pull arm 705 welded on one side of the top end of the hollow double-layer roller holder 704. The top end of the upper pull arm 705 is hingedly connected with the top end of the piston rod of the cylinder 701. The hollow double-layer roller holder 704 is internally fixed with a steel roller 706. The top end of the piston rod of the cylinder 701 is fixed with a U-shaped joint 702. The top end of the upper pull arm 705 extends into the U-shaped joint 702 and is hingedly connected with the U-shaped joint 702.

[0024] The hollow double-layer roller holder 704 is composed of a hollow column and straight mouth type side plates welded on both ends of the surface of the hollow column. The steel roller 706 is fixed between the two straight mouth type side plates. The bottom end of the upper pull arm 705 is welded with the outer wall of the hollow column. When the pneumatic belt breaking and pressing assembly 7 performs the pressing operation, the piston rod of the cylinder 701 forces the hollow double-layer roller holder 704 to deflect through the U-shaped joint 702 and the upper pull arm 705. At this time, the rotating shaft 703 rotates under the deflection of the hollow double-layer roller holder 704. The hollow double-layer roller holder 704 drives the steel roller 706 to move towards the direction of the cylinder barrel 9 until the steel roller 706 can press the conveying belt on the cylinder barrel 9, thereby realizing the function of belt breaking protection.

[0025] In use, the base 1 is first horizontally adjusted and installed inside the frame of the belt conveyor to ensure that it is stable and does not shift. Then the side frame 3 is fixed on the slope wall of the double-slope roller holder 2. After installation, the parallelism and perpendicularity of the hollow middle frame 4 and the side frame 3 should be checked to ensure that the supporting shaft 8 and the cylinder barrel 9 will not be deflected or blocked during operation. The V-shaped folding table 5 is welded in the notch of the hollow middle frame 4. At the same time, the angle of the laser sensor 6 is adjusted to cover the key area of the conveying belt, so that the laser sensor 6 can effectively monitor the surface condition of the conveying belt. The electromagnetic valve controller 10 is connected between the laser sensor 6 and the pneumatic belt breaking and pressing assembly 7. When the laser sensor 6 detects an abnormality of the conveying belt, such as breaking or deviation, it transmits a signal to the electromagnetic valve controller 10. After signal processing, the electromagnetic valve controller 10 immediately drives the pneumatic belt breaking and pressing assembly 7 to act, so that the conveying belt is firmly pressed on the cylinder barrel 9. The pneumatic belt breaking and pressing assembly 7 needs to be connected with an electromagnetic valve, an air source and a control circuit in advance. During adjustment, the stroke and pressure of the pneumatic belt breaking and pressing assembly 7 are adjusted to ensure good pressing effect.

Claims

1. A belt breakage protection device for a belt conveyor, characterized in that: The system includes a base (1), a double-sloping roller frame (2) bolted to the top of the base (1), side frames (3) bolted to the inner walls of the left and right slopes of the double-sloping roller frame (2), and a hollowed-out middle frame (4) installed on the bottom wall of the double-sloping roller frame (2) between the two side frames (3). A support shaft (8) is fixed between the opposite outer walls of the side frames (3) and the hollowed-out middle frame (4), and a cylinder (9) is fixed on the outer circumference of the support shaft (8). A cylinder (9) is installed on the outer wall of the side frame (3) above the cylinder (9). There is a pneumatic tape breaking and pressing assembly (7). A V-shaped folding platform (5) is welded to one side inside the hollowed-out frame (4). Laser sensors (6) are installed on both sides of the top of the V-shaped folding platform (5) and at the center of the top. A solenoid valve controller (10) is installed on one side of the top of the base (1). The output end of the solenoid valve controller (10) is electrically connected to the input end of the pneumatic tape breaking and pressing assembly (7). The input end of the solenoid valve controller (10) is electrically connected to the output end of the laser sensor (6).

2. The belt breakage protection device for a belt conveyor according to claim 1, characterized in that: A recessed part is provided on one side of the top of the hollowed-out middle frame (4), and the V-shaped folding platform (5) is welded into the recessed part of the hollowed-out middle frame (4).

3. The belt breakage protection device for a belt conveyor according to claim 1, characterized in that: The base (1), the hollowed-out middle frame (4), and the double-slope roller frame (2) are all made of aluminum alloy components.

4. The belt breakage protection device for a belt conveyor according to claim 1, characterized in that: The pneumatic belt breaking and pressing assembly (7) includes a cylinder (701) hinged to the outer wall of one side of the side frame (3), a rotating shaft (703) rotatably mounted on the outer wall of one side of the side frame (3), a hollow double-layer roller frame (704) fixed on the surface of the rotating shaft (703), and an upper pull arm (705) welded to one side of the top of the hollow double-layer roller frame (704). The top of the upper pull arm (705) and the top of the piston rod of the cylinder (701) are hinged to each other. A steel roller (706) is fixed inside the hollow double-layer roller frame (704).

5. A belt breakage protection device for a belt conveyor according to claim 4, characterized in that: The piston rod of the cylinder (701) is fixed with a U-shaped connector (702) at the top end, and the top end of the upper pull arm (705) extends into the interior of the U-shaped connector (702) and is hinged to the U-shaped connector (702).

6. A belt breakage protection device for a belt conveyor according to claim 5, characterized in that: The hollow double-layer roller frame (704) consists of a hollow column and straight-mouth side plates welded and fixed at both ends of the hollow column surface. The steel roller (706) is bolted and fixed between the two straight-mouth side plates. The bottom end of the upper pull arm (705) is welded to the outer wall of the hollow column.

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