Conveyor belt breakage protection device

Abstract

The utility model discloses a conveyor belt breakage protection device which comprises a brake assembly, the brake assembly is arranged on a return stroke section of a belt and is composed of a first roller and a second roller, and the first roller and the second roller are rollers with damping and are arranged above and below the belt respectively. The first roller is connected to one end of the first reversing frame, the other end of the first reversing frame is hinged to the rack, and a first driving part is connected between the first reversing frame and the rack; the second roller is installed at one end of the first sliding frame, the first sliding frame is provided with a sliding block, and the sliding block is matched with a guide rail groove in the first base to form a sliding pair; a second driving piece is further arranged between the first sliding frame and the first base. When the belt is broken, clamping protection can be formed on the belt, meanwhile, materials on the belt are prevented from driving the belt to operate due to inertia, secondary damage can be prevented, and the device has the advantages of being good in reliability and high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveying, in particular to a conveyor belt break protection device. Background Art

[0002] Belt conveyors are widely used in the daily production of steel enterprises. They are convenient to transport, easy to maintain and have high conveying efficiency. In the process of conveying materials, if the materials carried on the conveyor belt are too much and too heavy, exceeding the carrying capacity of the belt, it will cause the belt to break. Sometimes the belt is broken due to damage or abnormality of the transmission parts of the conveyor, causing abnormal force on the belt. Since the belt has a certain tension and movement speed, when it breaks, the belt will be thrown out, not only will the materials fall, but also it will bring safety risks to the surrounding workers; at the same time, the materials on the belt will continue to drive the belt to run under the action of inertia. If the materials are not blocked, the materials will also fall and bring safety hazards. Utility Model Content

[0003] The utility model is used to overcome the defects of the prior art and provide a conveyor belt break protection device to solve the problems of belt throwing out and material scattering after the belt breaks, which endangers the safety of operators.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A conveyor belt break protection device, the conveyor includes a frame, a belt, a tensioning assembly and a driving assembly; the belt break protection device includes a braking assembly, the braking assembly is arranged on the return section of the belt, and is composed of a first roller and a second roller, the first roller and the second roller are rollers with damping, and are respectively arranged above and below the belt; the first roller is connected to one end of a first rotating frame, the other end of the first rotating frame is hinged to the frame, and a first driving member is connected between the first rotating frame and the frame; the second roller is installed at one end of a first sliding frame, and a sliding block is arranged on the first sliding frame, which matches the guide rail groove on the first base to form a sliding pair; a second driving member is also arranged between the first sliding frame and the first base.

[0006] The above-mentioned conveyor belt breakage protection device is provided with a thrust resistance assembly in the load-bearing section of the belt near the head roller and the tail roller. The thrust resistance assembly is composed of a thrust resistance plate, a second sliding frame, and a second base. The second base is provided with a guide rail groove, and the second sliding frame is provided with a slider. The second sliding frame and the second base are connected by a sliding pair, and a third driving member is also connected between the two.

[0007] The above-mentioned conveyor belt breakage protection device is provided with a pressure sensor between the shaft seat of the redirecting roller of the tensioning assembly and the frame, and is provided with a CPU and a control circuit. The output of the pressure sensor is connected to the input end of the CPU, and the output end of the CPU is respectively connected to control the first drive member, the second drive member, the third drive member and the drive motor of the conveyor.

[0008] In the above-mentioned conveyor belt breakage protection device, the first driving member and the second driving member are electric cylinders or hydraulic cylinders.

[0009] In the above-mentioned conveyor belt breakage protection device, the third driving component is an electric cylinder or a hydraulic cylinder. Beneficial Effects

[0010] Beneficial effects of the utility model:

[0011] First, by setting a brake assembly consisting of a first roller and a second roller in the return section of the belt, when the belt breaks, the first roller above the belt moves downward, and the second roller below the belt moves upward. The two rollers are damped rollers, which can brake the belt when the belt is clamped. Because they are damped rollers, the belt is in a rolling and frictional motion process with the first roller and the second roller when decelerating, and further damage to the belt and aggravation of secondary disasters caused by relying solely on friction braking will not occur.

[0012] Secondly, by setting a thrust blocking assembly on the load-bearing section of the belt, when the belt breaks, the third driving member pushes the thrust blocking plate downward to block the material carried on the belt to prevent the material inertia from driving the belt to move further. While the blocking plate blocks the material from running, it also forms a certain braking function for the belt.

[0013] Third, a pressure sensor is added to the redirecting roller. When the belt breaks, the force on the sensor changes, and the CPU and control circuit control the actions of each drive component, which can quickly brake the broken belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the tensioning mechanism of the utility model;

[0017] The symbols in the figure represent:

[0018] 1. Frame, 2. Belt, 3. First roller, 4. Second roller, 5. First rotating frame, 6. First driving member, 7. First sliding frame, 8. First base, 9. Second driving member, 10. Head roller, 11. Tail roller, 12. Thrust plate, 13. Second sliding frame, 14. Second base, 15. Third driving member, 16. Redirecting roller, 17. Tension screw. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-2 As shown, the conveyor of the utility model includes a frame 1, a belt 2, a tensioning assembly and a driving assembly. The belt break protection device includes a brake assembly, which is arranged in the return section of the belt 2 and consists of a first roller 3 and a second roller 4. The first roller 3 and the second roller 4 are rollers with damping, which are arranged above and below the belt respectively. The roller with damping can be a built-in damping roller, and a Damon Industry damping roller can be selected; it can also be a roller with an external braking function, and the braking method can be a drum brake or a disc brake arranged on the outside of the roller for braking. These are all existing technologies and will not be described in detail.

[0021] The first roller 3 is connected to one end of the first rotating frame 5 , the other end of the first rotating frame 5 is hinged to the frame 1 , and a first driving member 6 is connected between the first rotating frame 5 and the frame 1 .

[0022] The second roller 4 is mounted on one end of the first sliding frame 7. The first sliding frame 7 is provided with a slider, which matches the guide groove on the first base 8 to form a sliding pair. The first sliding frame 7 can slide up and down in the first base 8. A second driving member 9 is also provided between the first sliding frame 7 and the first base 8. The first base is connected to the ground or the frame. The first driving member 6 and the second driving member 9 are electric cylinders or hydraulic cylinders.

[0023] The axes of the first roller 3 and the second roller 4 are on a vertical line. When the belt breaks, the first driving member and the second driving member drive the first roller and the second roller to move toward the belt to clamp the belt. Because it is a damping roller, the belt is in a rolling and frictional motion process with the first roller and the second roller when decelerating, and there will be no situation where the belt is further damaged and secondary disasters are aggravated by simply relying on friction braking; because if the friction braking force is too small, the braking effect is general, and if the friction braking force is too large, the belt will be torn, high temperature, etc., which may cause secondary damage.

[0024] When the belt breaks, the material on the belt bearing section will drive the belt to continue running due to inertia, so the movement of the material needs to be stopped. The following solution can be adopted: a push-blocking assembly is arranged near the head roller 10 and the tail roller 11 of the belt bearing section 2, and the push-blocking assembly is composed of a push-blocking plate 12, a second sliding frame 13, and a second base 14. The second base 14 is provided with a guide rail groove, and the second sliding frame 13 is provided with a slider. The second sliding frame 13 is connected to the second base 14 through a sliding pair, and a third driving member 15 is also connected between the two. The third driving member 15 is an electric cylinder or a hydraulic cylinder. When the belt breaks, the third driving member 15 pushes the push-blocking plate to move down to block the material carried on the belt to prevent the material inertia from driving the belt to run further. While the blocking plate blocks the material from running, it also forms a certain braking function for the belt.

[0025] When the belt breaks, in order to quickly respond to braking, the following solution can be adopted: a pressure sensor is set between the shaft seat and the frame of the redirecting roller 16 of the tensioning assembly, and a CPU and a control circuit are set. The output of the pressure sensor is connected to the input end of the CPU, and the output end of the CPU is respectively connected to control the first drive member 6, the second drive member 9, the third drive member 15 and the drive motor of the conveyor. The CPU can use the 8051F340 series, and its input and output can meet the needs. When the output of the CPU is connected to control the three drive members, the signal can be amplified by the transistor amplifier circuit, and then the relay is connected to control the three drive members. The above-mentioned pressure sensor can use the ZEMIC Zhonghang Electric Measurement bearing seat sensor, and the following alternative method can also be used: a tension sensor is set on the tensioning screw 17 in the tensioning assembly, and the tightening screw 17 is divided into two sections, and its two ends are respectively connected to the tension sensor. The tension sensor can use the Jinnuozhu S-type tension sensor, and the signal output of the tension sensor is connected to the input end of the CPU.

Claims

1. A conveyor belt break protection device, the conveyor comprising a frame (1), a belt (2), a tensioning assembly and a driving assembly; characterized in that: The belt break protection device comprises a brake assembly, which is arranged at the return section of the belt (2) and consists of a first roller (3) and a second roller (4), wherein the first roller (3) and the second roller (4) are rollers with damping and are arranged above and below the belt respectively; the first roller (3) is connected to one end of a first rotating frame (5), the other end of the first rotating frame (5) is hinged to the frame (1), and a first driving member (6) is connected between the first rotating frame (5) and the frame (1); the second roller (4) is mounted on one end of a first sliding frame (7), and a sliding block is arranged on the first sliding frame (7), which matches with a guide groove on a first base (8) to form a sliding pair; and a second driving member (9) is also arranged between the first sliding frame (7) and the first base (8).

2. The conveyor belt breakage protection device according to claim 1, characterized in that: A thrust resistance assembly is provided at a position of the load-bearing section of the belt (2) near the head roller (10) and the tail roller (11), the thrust resistance assembly comprising a thrust resistance plate (12), a second sliding frame (13), and a second base (14); a guide rail groove is provided on the second base (14); a slider is provided on the second sliding frame (13); the second sliding frame (13) and the second base (14) are connected via a sliding pair; a third driving member (15) is also connected between the two.

3. The conveyor belt breakage protection device according to claim 1, characterized in that: A pressure sensor is provided between the shaft seat of the redirecting roller (16) of the tensioning assembly and the frame, and a CPU and a control circuit are provided. The output of the pressure sensor is connected to the input end of the CPU, and the output end of the CPU is respectively connected to control the first drive member (6), the second drive member (9), the third drive member (15) and the drive motor of the conveyor.

4. The conveyor belt breakage protection device according to claim 1, characterized in that: The first driving member (6) and the second driving member (9) are electric cylinders or hydraulic cylinders.

5. The conveyor belt breakage protection device according to claim 2, characterized in that: The third driving member (15) is an electric cylinder or a hydraulic cylinder.

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