Turnover type tear sensing device

Abstract

The utility model relates to an overturning type tearing sensing device which comprises a material receiving hopper which is located between an upper belt and a lower belt of a conveying belt and hinged to a support through a hinge shaft, an elastic structure supporting the material receiving hopper to rotate around the hinge shaft, and an optical sensor arranged on the support. And a triggering plate which is connected with the material receiving hopper and triggers the light sensor is also hinged to the shell of the light sensor. During use, after the upper belt is torn in the conveying direction, materials fall onto the receiving hopper, the weight of the receiving hopper is increased, the elastic structure is compressed, meanwhile, the receiving hopper rotates downwards around the hinge shaft, the trigger plate rotates downwards along with the receiving hopper, one end of the trigger plate triggers the optical sensor, and therefore alarming is achieved. Therefore, the accuracy of tearing detection of the conveying belt is improved, and the situation of misoperation of the conveying belt detection device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and more particularly to the field of sensor technology for detecting conveyor belt tears, specifically referring to a flip-type tear sensing device. Background Technology

[0002] Conveyor belts, also known as transport belts, are rubber and fiber / metal composite products, or plastic and fabric composite products, used in belt conveyors to carry and transport materials.

[0003] During material transport, conveyor belts inevitably accumulate various debris, leading to various accidents. Tearing is a frequent and damaging malfunction, often resulting in the conveyor belt being scrapped. Currently used conveyor belt tear detection devices suffer from poor sensitivity, high false alarm rates, and low production costs.

[0004] The existing technology involves placing a steel wire below the upper conveyor belt. However, when a foreign object penetrates the conveyor belt and travels with it, it may trigger an alarm if it touches the steel wire or if excessive material spillage causes the wire to malfunction. This device is prone to false alarms and has poor sensitivity. Surface defects on the conveyor belt, the presence of other deposits on the conveyor belt, and damage to the conveyor belt idlers can all cause false alarms. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a flip-type tear sensing device, which improves the accuracy of conveyor belt tear detection and reduces the occurrence of malfunctions in conveyor belt detection devices.

[0006] This utility model is achieved through the following technical solution: a flip-type tear sensing device, including a receiving hopper located between the upper and lower belts of a conveyor belt and hinged to a support via a hinge shaft, an elastic structure supporting the receiving hopper to rotate around the hinge shaft, and a light sensor mounted on the support. The housing of the light sensor is also hinged to a trigger plate that is connected to the receiving hopper and triggers the light sensor.

[0007] When this invention is in use, after the upper belt tears along its conveying direction, the material falls onto the receiving hopper. The weight of the receiving hopper increases, thereby compressing the elastic structure and causing the receiving hopper to rotate downward around the hinge axis. At this time, the trigger plate rotates downward with the receiving hopper, and one end of the trigger plate triggers the light sensor, thereby realizing an alarm. This improves the accuracy of conveyor belt tear detection and reduces the possibility of malfunctions in the conveyor belt detection device.

[0008] Preferably, the elastic structure includes a spring mounted on a support and supporting the receiving hopper, and the support is also provided with a telescopic protective sleeve fitted over the outside of the spring.

[0009] In this preferred design, the telescopic protective sleeve serves to protect the spring during use.

[0010] Preferably, the telescopic protective sleeve has a support block that contacts the bottom surface of the receiving hopper and a fixing block that is fixed to the bracket, and the spring is provided between the fixing block and the support block.

[0011] In this preferred embodiment, the position of the spring is fixed by setting up a fixing block and a support block.

[0012] Preferably, the bottom surface of the support block is also connected to a guide screw located inside the spring and extending downward through the fixing block. The fixing block is provided with a guide hole through which the guide screw passes, and a nut located in the lower section of the guide hole and with a diameter larger than the diameter of the guide hole is threaded onto the guide screw.

[0013] This preferred solution uses a guide screw to guide the spring, and the nut allows for easy adjustment of the distance between the fixed block and the support block, thereby adjusting the spring force.

[0014] Preferably, the trigger plate includes a first vertical section, a first horizontal section, a second vertical section, and a second horizontal section connected sequentially from high to low in a stepped shape. The second vertical section is hinged to the housing of the photosensitive sensor. The top surface of the first vertical section is in contact with the bottom surface of the hopper. The trigger shaft of the photosensitive sensor is in contact with the end face of the second horizontal section and the second vertical section.

[0015] In this preferred embodiment, when the receiving hopper rotates, the first vertical section drives the second horizontal section to rotate upward. When the second horizontal section rotates, it squeezes the trigger shaft of the light sensor inward, thereby triggering the light sensor.

[0016] Preferably, the width of the receiving hopper is adapted to the width of the upper belt, the optical sensor is located on the side of the receiving hopper, and the hinge shaft extends along the width direction of the upper belt.

[0017] In use, this preferred solution prevents materials from falling onto the photosensor and damaging it by setting the photosensor position.

[0018] The beneficial effects of this utility model are as follows: When the upper belt tears along its conveying direction, the material falls onto the receiving hopper, increasing the weight of the hopper. This compresses the elastic structure and causes the receiving hopper to rotate downwards around the hinge axis. At this time, the trigger plate rotates downwards with the receiving hopper, and one end of the trigger plate triggers the light sensor, thereby realizing an alarm. This improves the accuracy of conveyor belt tear detection and reduces the possibility of malfunctions in the conveyor belt detection device. The telescopic protective sleeve protects the spring. The guide screw guides the spring, and the nut allows for easy adjustment of the distance between the fixed block and the support block, thereby adjusting the spring force. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the structure of this utility model in use;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a side view of the elastic structure.

[0022] Figure 4 This is a side view of the elastic structure when the structure of this utility model is in use;

[0023] Figure 5 This is a top view of the structure of this utility model;

[0024] As shown in the figure:

[0025] 1. Optical sensor, 2. Trigger plate, 3. Bracket, 4. Feeding hopper, 5. Hinge shaft, 6. Telescopic protective sleeve, 7. Spring, 8. Screw, 9. Fixing block, 10. Nut, 11. Support block, 12. Upper belt, 13. Lower belt, 21. First vertical section, 22. First horizontal section, 23. Second vertical section, 24. Second horizontal section. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] See attached document Figure 1-5 The present invention discloses a flip-type tear sensing device, including a receiving hopper 4 located between the upper belt 12 and the lower belt 13 of the conveyor belt and hinged to the support 3 via a hinge shaft 5, an elastic structure supporting the receiving hopper 4 to rotate around the hinge shaft 5, and a light sensor 1 disposed on the support 3. The housing of the light sensor 1 is also hinged to a trigger plate 2 connected to the receiving hopper 4 and triggering the light sensor 1.

[0028] The width of the receiving hopper 4 is adapted to the width of the upper belt 12, the optical sensor 1 is located on the side of the receiving hopper 4, and the hinge shaft 5 extends along the width direction of the upper belt 12.

[0029] The elastic structure includes a spring 7 supporting the receiving hopper 4, and the bracket 3 is also provided with a telescopic protective sleeve 6 sleeved on the outside of the spring 7. The telescopic protective sleeve 6 is a corrugated pipe.

[0030] The telescopic protective sleeve 6 is connected to a support block 11 that contacts the bottom surface of the receiving hopper 4, and a fixing block 9 that is fixed to the bracket 3. The spring 7 is provided between the fixing block 9 and the support block 11.

[0031] The bottom surface of the support block 11 is also connected to a guide screw 8 located inside the spring 7 and extending downward through the fixing block 9. The fixing block 9 is provided with a guide hole through which the guide screw 8 passes. A nut 10 located in the lower section of the guide hole and with a diameter larger than the diameter of the guide hole is threadedly connected to the guide screw 8.

[0032] The trigger plate 2 includes a first vertical section 21, a first horizontal section 22, a second vertical section 23, and a second horizontal section 24 connected in a stepped manner from high to low. The second vertical section 23 is hinged to the housing of the photosensitive sensor 1. The top surface of the first vertical section 21 is in contact with the bottom surface of the hopper. The trigger shaft of the photosensitive sensor 1 is in contact with the end face of the second horizontal section 24 and the second vertical section 23.

[0033] The support block 11 is supported at the center of the receiving hopper 4. The optical sensor 1 is existing technology, and the optical sensor 1 is equipped with a trigger shaft and a telescopic spring that drives the trigger shaft to extend outward.

[0034] The receiving hopper 4 is made of steel, which is not easily damaged. When the material falls, it only collides with the receiving hopper 4 and does not hit the light sensor 1. It has a long service life. The receiving hopper 4 is very rigid. When the material is torn and falls at different positions on the cross-section of the belt, even if the falling point is off-center, the entire receiving hopper 4 will rotate, thus ensuring the sensitivity of the tear sensor of this device.

[0035] When this utility model is in use, after the upper belt 12 tears along its conveying direction, the material falls onto the receiving hopper 4, increasing the weight of the receiving hopper 4. This compresses the spring 7 and causes the receiving hopper 4 to rotate downwards around the hinge shaft 5. At this time, the trigger plate 2 follows the downward rotation of the receiving hopper 4. Specifically, the receiving hopper 4 drives the second horizontal section 24 to rotate upwards through the first vertical section 21. When the second horizontal section 24 rotates, it presses inwards against the trigger shaft of the optical sensor, thereby triggering the optical sensor 1 and triggering an alarm. This improves the accuracy of conveyor belt tear detection and reduces the possibility of malfunctions in the conveyor belt detection device.

[0036] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A flip-tape sensor device, characterized by: The device comprises a receiving hopper (4) located between an upper belt (12) and a lower belt (13) of a conveyor belt and hinged to a support frame (3) through a hinge shaft (5), an elastic structure supporting rotation of the receiving hopper (4) around the hinge shaft (5), and a light sensor (1) provided on the support frame (3), a trigger plate (2) being hinged to the receiving hopper (4) and triggering the light sensor (1).

2. The flip-tape tamper-evident device of claim 1, wherein: The elastic structure comprises a spring (7) provided on the support frame (3) and supporting the receiving hopper (4), and a telescopic protective sleeve (6) sleeved outside the spring (7) and provided on the support frame (3).

3. The flip-tape tamper-evident device of claim 2, wherein: The telescopic protective sleeve (6) is connected with a support block (11) in contact with a bottom surface of the receiving hopper (4), and a fixed block (9) is fixed to the support frame (3), and the spring (7) is provided between the fixed block (9) and the support block (11).

4. The flip-tape tamper-evident device of claim 3, wherein: A guide screw (8) is further connected to a bottom surface of the support block (11) and extends downward through the fixed block (9), the fixed block (9) is provided with a guide hole through which the guide screw (8) extends, and a nut (10) is threadedly connected to the guide screw (8) and located at a lower section of the guide hole and has a diameter larger than that of the guide hole.

5. The flip-tape tamper-evident device of claim 1, wherein: The trigger plate (2) comprises a first vertical section (21), a first horizontal section (22), a second vertical section (23), and a second horizontal section (24) connected in sequence from high to low in a stepped manner, the second vertical section (23) is hinged to a housing of the light sensor (1), a top surface of the first vertical section (21) is in contact with a bottom surface of the receiving hopper (4), and a trigger shaft of the light sensor (1) is in contact with an end surface of the second horizontal section (24) and the second vertical section (23).

6. The inverted tear sensing device of claim 1, wherein: The receiving hopper (4) has a width adapted to that of the upper belt (12), the light sensor (1) is located at a side of the receiving hopper (4), and the hinge shaft (5) extends along a width direction of the upper belt (12).

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