Belt tearing detection device and method

Abstract

The invention relates to a belt tearing detection device and method.The belt tearing detection device comprises a material receiving disc arranged below a belt, one end of the bottom of the material receiving disc is arranged on a base through a first elastic supporting mechanism, and the other end of the bottom of the material receiving disc is arranged on the base through a second elastic supporting mechanism; the middle of the bottom of the receiving disc is arranged on the base through a rotary supporting mechanism; a proximity switch is arranged on the base, and a proximity block matched with the proximity switch is arranged on the material receiving disc. A first elastic supporting mechanism and a second elastic supporting mechanism are arranged at the two ends of a receiving disc, and a rotary supporting mechanism is arranged in the middle; when the belt is torn, materials on the belt are scattered on the material receiving disc, the material receiving disc inclines towards one side, after inclination, signals of the proximity switch fall off, the proximity switch transmits the signals to the control loop after collecting the signals, and when the control loop receives the signals collected by the proximity switch, the control loop gives an alarm and stops the machine immediately, so that the purpose of preventing belt tearing from expanding is achieved. And the loss is controlled within the minimum range.

Description

Technical Field

[0001] The invention relates to the field of belt transportation, and in particular to a belt tear detection device and method. Background Art

[0002] Traditional belt tear monitoring devices mostly use a steel cable laid at the bottom of the belt to detect raw materials leaking from the tear or the belt tearing and deformation touching the steel cable, triggering the anti-tear device steel rope. This method has a single detection method, many interference factors, many false actions, and delayed detection and judgment. The belt tear alarm information is often issued only when the accident is serious. The belt tear prevention device currently used is not ideal in actual application and has the following problems:

[0003] Insufficient sensitivity: The belt anti-tear device commonly used at present is not ideal in actual application. It is not sensitive enough. When the belt is just torn, not much material on the belt leaks through the tear, and the detection device cannot be triggered in time and accurately. By the time the detection is detected, the belt has been torn over a large area, seriously affecting production operations and causing great economic losses.

[0004] False alarm: Many electrical and electronic belt detection devices are prone to malfunction during daily production operations and cleaning processes. Once the malfunction occurs, it causes trouble to the operators. By the time the on-site personnel confirm the problem and start the belt again, production has already been affected. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a belt tear detection device and method, which can accurately detect the tearing condition of the belt.

[0006] The technical solution adopted by the present invention is: a belt tear detection device, characterized in that: it includes a receiving tray arranged under the belt, one end of the bottom of the receiving tray is arranged on the base through a first elastic support mechanism, the other end of the bottom of the receiving tray is arranged on the base through a second elastic support mechanism, and the middle of the bottom of the receiving tray is arranged on the base through a rotating support mechanism; a proximity switch is provided on the base, and a proximity block cooperating with the proximity switch is provided on the receiving tray; when the belt is torn, the material on the belt spills onto the receiving tray, the receiving tray tilts to one end, and the proximity switch signal changes.

[0007] Preferably, the first elastic support mechanism and the second elastic support mechanism have the same structure and are symmetrically arranged at both ends of the bottom of the receiving tray; the first elastic support mechanism and the second elastic support mechanism both include a spring, the upper end of the spring is fixedly connected to the bottom of the receiving tray, and the lower end is fixedly connected to the base.

[0008] Preferably, the elastic coefficient of the spring is adjusted to control the tilt and swing sensitivity of the receiving tray.

[0009] Preferably, the rotating support mechanism comprises a support plate, the lower end of which is fixed to the base, and the upper end of which is hinged to the receiving tray.

[0010] Preferably, the device further comprises a camera disposed beside the receiving tray.

[0011] Preferably, the proximity switch is a normally open proximity switch, and when the receiving tray is tilted, the proximity switch signal is lost.

[0012] Preferably, it is installed near the outlet of the receiving hopper or at the outlet of the pouring chute.

[0013] Preferably, sliding seats are provided at both ends of the base.

[0014] A method for detecting belt tearing, characterized in that: the belt tearing is detected by using the above-mentioned belt tearing detection device, when the receiving tray receives the material leaking after the belt tearing, the two ends of the receiving tray tilt due to weight imbalance, the proximity block leaves the proximity switch, triggering an alarm, and triggering a camera at that position to pop up, so that the staff on duty can judge the degree of tearing or false alarm.

[0015] The beneficial effects achieved by the present invention are as follows: by arranging a first elastic supporting mechanism and a second elastic supporting mechanism at both ends of a receiving plate, and arranging a rotating supporting mechanism in the middle; when the belt is torn, the material on the belt spills onto the receiving plate, and the receiving plate tilts to one side. After tilting, the proximity switch signal drops, and the proximity switch collects the signal and transmits it to the control circuit. When the control circuit receives the proximity switch collection signal, it immediately alarms and shuts down, thereby preventing the expansion of the belt tear and controlling the loss to a minimum. A smelting enterprise has thousands of belts. Because the belt conveyor has no anti-tear protection or the effect is not good, the belt conveyor belt is frequently torn and scratched, causing great losses. According to the unit price of the conveyor belt of 300 yuan per meter, the average length of each belt is 300 meters, and there are 800 belts in total. After the anti-tear device of the belt conveyor belt is installed, it is calculated as one time for every 10 belts to be scratched, excluding the impact on production and maintenance costs, and the cost saving is 9.6 million yuan. The cost of each set of detection equipment is 800 yuan, and the total cost is 640,000 yuan, with a total cost saving of 8.96 million yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Among them: 1. receiving tray; 2. first elastic supporting mechanism; 3. second elastic supporting mechanism; 4. rotating supporting mechanism; 5. base; 6. camera; 7. sliding seat. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] A belt tear detection device of the present invention comprises a receiving tray 1 arranged below the belt, one end of the bottom of the receiving tray 1 is arranged on a base 5 through a first elastic support mechanism 2, the other end of the bottom of the receiving tray 1 is arranged on the base 5 through a second elastic support mechanism 3, and the middle of the bottom of the receiving tray 1 is arranged on the base 5 through a rotating support mechanism 4; a proximity switch is arranged on the base 5, and a proximity block cooperating with the proximity switch is arranged on the receiving tray 1; when the belt is torn, the material on the belt spills onto the receiving tray 1, the receiving tray 1 tilts toward one end, and the proximity switch signal changes. The proximity switch collects the signal and transmits it to the control circuit. When the control circuit receives the proximity switch collected signal, it immediately alarms and stops the machine, thereby preventing the expansion of the belt tear and controlling the loss within a minimum range.

[0020] In this embodiment, the first elastic support mechanism 2 and the second elastic support mechanism 3 have the same structure and are symmetrically arranged at both ends of the bottom of the receiving tray 1; the first elastic support mechanism 2 and the second elastic support mechanism 3 both include springs, the upper ends of the springs are fixedly connected to the bottom of the receiving tray 1, and the lower ends are fixedly connected to the base 5.

[0021] In this embodiment, the elastic coefficient of the spring is adjusted to control the tilting and swinging sensitivity of the receiving tray 1 .

[0022] In this embodiment, the rotating support mechanism 4 includes a support plate, the lower end of the support plate is fixed to the base, and the upper end of the support plate is hinged to the receiving tray 1. The hinge structure adopts a hinge form.

[0023] In this embodiment, the belt tear detection device also includes a camera 6 arranged beside the receiving tray 1. When the receiving tray 1 tilts left or right, the proximity switch signal drops, triggering the PLC alarm and the camera 6 at that position to pop up, so that the staff can quickly and accurately judge the tear degree or false alarm.

[0024] In this embodiment, the proximity switch is a normally open proximity switch, and when the receiving tray 1 is tilted, the proximity switch signal is lost.

[0025] The present invention provides a method for detecting belt tearing. When a receiving tray 1 receives the material leaking from the torn belt, both ends of the receiving tray tilt due to weight imbalance, and the proximity block leaves the proximity switch, triggering an alarm and causing a camera at that position to pop up, so that personnel on duty can judge the degree of tearing or false alarm.

[0026] According to the spacing of the belt brackets, a support frame for the receiving tray 1 is made of channel steel. The support frame is generally arranged at about 5 meters from the outlet of the receiving hopper or at the outlet of the pouring chute. When the belt is torn, the material leaks out from the tearing mouth; the belt width may have various specifications, and slide seats 7 are designed at both ends of the support frame for the convenience of adjusting the length. The slide seats 7 can slide left and right according to the width of the belt frame, thereby adjusting the overall width of the tear detection device; the two ends of the receiving tray 1 are supported by the first elastic support mechanism 2 and the second elastic support mechanism 3, and the middle part of the receiving tray 1 is supported by the rotating support mechanism 4, and the receiving tray 1 can swing left and right along the central axis of the rotating support mechanism 4; the spring force of the first elastic support mechanism 2 and the second elastic support mechanism 3 can be adjusted In order to control the sensitivity of the tilt and swing of the receiving tray 1, it can also avoid single particles of material splashing onto the receiving tray 1 during cleaning and causing malfunction; a proximity block is installed at the bottom of the receiving tray 1, and a proximity switch is installed at the corresponding position of the base 5. When the receiving tray 1 receives the material leaked after the belt is torn, the left and right sides tilt due to weight imbalance, and the proximity block leaves the proximity switch, triggering an alarm, and at the same time triggering the industrial production camera, and the video camera at that position pops up automatically; the proximity block is installed at a corner of the receiving tray 1. Under normal circumstances, the proximity switch signal is normally open. When the receiving tray 1 tilts left or right, the proximity switch signal will drop, triggering the PLC alarm and triggering the camera 6 at that position to pop up, so that the staff on duty can quickly and accurately judge the degree of tearing or false alarm.

[0027] The present invention is based on the force principle of the balance. When the belt is torn, the material on the belt spills onto the receiving tray 1, and the receiving tray 1 tilts to one side. After tilting, the proximity switch signal drops out, and the proximity switch collects the signal and transmits it to the control circuit to alarm and shut down. At the same time, the tearing signal triggers the camera corresponding to the area, and the video of the camera 6 pops up automatically, so that the operator can further judge whether it is a false alarm or a belt tear.

[0028] When the control circuit receives the signal collected by the proximity switch, it will immediately alarm and shut down, thereby preventing the expansion of belt tearing and controlling the loss to a minimum. A smelting enterprise has thousands of belts. Because the belt conveyor has no anti-tear protection or the effect is not good, the belt conveyor belts are frequently torn and scratched, causing great losses. Based on the unit price of 300 yuan per meter of conveyor belt, the average length of each belt is 300 meters, and there are 800 belts in total. After the installation of the anti-tear device for the belt conveyor belt, it is calculated based on one scratch for every 10 belts, excluding the impact on production and maintenance costs, the cost savings are 9.6 million yuan. The cost of each set of detection equipment is 800 yuan, and the total cost is 640,000 yuan, with a total savings of 8.96 million yuan.

[0029] The present invention utilizes the principle that the material spilled onto the receiving tray 1 after the belt is torn causes the center of gravity of the receiving tray to shift, so that the receiving tray tilts to one side, and the proximity switch signal changes from "on" to "off". After receiving the signal, the control circuit alarms and stops and drives the camera to pop up, thereby preventing the belt tear from expanding.

[0030] Note:

[0031] 1. The size of the receiving tray 1 is measured and determined according to the actual situation on site. The receiving tray 1 cannot touch the belt when it is tilted to the maximum;

[0032] 2. The springs of the first elastic support mechanism 2 and the second elastic support mechanism 3 should not be too thick, and the weight on both sides of the receiving tray 1 is preferably around 0.2 kg;

[0033] 3. The camera 6 is installed near the receiving tray 1, and the leakage above the receiving tray 1 can be clearly seen and there should be sufficient light;

[0034] 4. Clean the dust on the receiving tray 1 and the camera 6 regularly;

[0035] 5. The camera 6 is installed in a fixed position, and its position and angle are not easily changed even if it is accidentally touched, thus avoiding false alarms;

[0036] 6. The area monitored by camera 6 has sufficient lighting and small light changes to avoid false alarms;

[0037] 7. The IP address of camera 6 is fixed, and one camera 6 corresponds to one tear monitoring device.

[0038] 8. Regularly monitor whether the tearing device structure is stable to prevent the tearing device from falling onto the belt and damaging the belt.

[0039] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims.

[0040] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A belt tear detection device, characterized in that: It includes a receiving tray arranged below the belt, one end of the bottom of the receiving tray is arranged on the base through a first elastic support mechanism, the other end of the bottom of the receiving tray is arranged on the base through a second elastic support mechanism, and the middle of the bottom of the receiving tray is arranged on the base through a rotating support mechanism; a proximity switch is provided on the base, and a proximity block cooperating with the proximity switch is provided on the receiving tray; when the belt is torn, the material on the belt spills onto the receiving tray, the receiving tray tilts to one end, and the proximity switch signal changes.

2. The belt tear detection device according to claim 1, characterized in that: The first elastic support mechanism and the second elastic support mechanism have the same structure and are symmetrically arranged at both ends of the bottom of the receiving tray; the first elastic support mechanism and the second elastic support mechanism both include a spring, the upper end of the spring is fixedly connected to the bottom of the receiving tray, and the lower end is fixedly connected to the base.

3. The belt tear detection device according to claim 1, characterized in that: The elastic coefficient of the spring is adjusted to control the tilt and swing sensitivity of the receiving tray.

4. The belt tear detection device according to claim 1, characterized in that: The rotating support mechanism comprises a support plate, the lower end of which is fixed to the base, and the upper end of which is hinged to the receiving tray.

5. The belt tear detection device according to claim 1, characterized in that: The device also includes a camera arranged beside the receiving tray.

6. The belt tear detection device according to claim 1, characterized in that: The proximity switch is a normally open proximity switch. When the receiving tray is tilted, the proximity switch signal is lost.

7. The belt tear detection device according to claim 1, characterized in that: Installed near the outlet of the receiving hopper or at the outlet of the pouring chute.

8. The belt tear detection device according to claim 1, characterized in that: Sliding seats are arranged at both ends of the base.

9. A method for detecting belt tearing, characterized in that: The belt tear detection device described in any one of claims 1 to 8 is used to detect belt tearing. When the receiving tray receives the material leaking out after the belt tearing, the two ends of the receiving tray tilt due to weight imbalance, the proximity block leaves the proximity switch, triggering the alarm, and triggering the camera at that position to pop up, so that the staff on duty can judge the degree of tearing or false alarm.

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