Composite belt longitudinal tearing protection device

Abstract

The utility model discloses a combined type belt longitudinal tearing protection device which comprises an overline alarm assembly, an infrared alarm assembly and a deviation alarm assembly. According to the scheme, the conveying belt is divided into the upper layer and the lower layer, the overline alarm assembly, the offset alarm assembly and the infrared alarm assembly are all located between the two layers of belts, and after coal falls into the lower layer of belt from the upper layer of belt, small and dense coal blocks can shield infrared rays emitted by infrared probes; the infrared probes arranged on the two sides of the belt cannot receive signals of each other, and then the second alarm module is triggered; when the coal material is large, the coal material falls on the conductive wires, the coal material can communicate the two adjacent conductive wires to form a path, and then the first alarm module is triggered; when coal exists on the lower-layer belt, in the process that the coal moves along with the lower-layer belt, the stop iron is impacted by the coal and generates posture change or displacement, the proximity sensor triggers the third alarm module after obtaining a signal, and therefore anti-tearing protection of the belt is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine safety devices, and in particular to a composite belt longitudinal tear protection device. Background Technology

[0002] In existing technology, conveyor belts in coal mines use a flat-plate pressure-type tear protection scheme. When coal falls onto the flat plate, it presses down and triggers a microswitch, causing the conveyor belt to stop. However, this method is prone to failure due to the humid environment inside the mine, which can cause the pressure spring of the protection device to rust and the microswitch to become insensitive. Utility Model Content

[0003] In view of this, the present invention provides a composite belt longitudinal tear protection device. The conveyor belt moves in a two-layer posture. The cross-line alarm component, the offset alarm component, and the infrared alarm component are all located between the two belt layers. After the coal falls from the upper belt to the lower belt, small and dense pieces of coal will block the infrared rays emitted by the infrared probes, preventing the infrared probes on both sides of the belt from receiving signals from each other, thus triggering the second alarm module. When the coal is larger, it will fall on the conductive wires, connecting two adjacent conductive wires to form a circuit, thus triggering the first alarm module. When there is coal on the lower belt, as the coal moves with the lower belt, the stop iron is hit by the coal and undergoes a change in posture or displacement. The proximity sensor obtains the signal and triggers the third alarm module, thereby achieving belt tear protection.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A composite belt tear protection device, comprising:

[0006] The cross-line alarm component includes multiple conductive wires that are spaced apart and span the lower belt, support legs for supporting the conductive wires above the lower belt, and a first alarm module. The first alarm module is triggered when there is a connection between two adjacent conductive wires.

[0007] The infrared alarm component includes at least two infrared probes located on both sides of the lower belt and corresponding to each other, and a second alarm module. The infrared rays emitted by the infrared probes are higher than the conductive wires. When the infrared rays emitted by the infrared probes are blocked, the second alarm module is triggered.

[0008] The offset alarm component includes a stop block rotatably connected above the lower belt and spanning the lower belt, a proximity switch fixed above the lower belt and facing the stop block, and a third alarm module. The rotation axis of the stop block is perpendicular to the travel direction of the bottom of the lower belt. When the position and / or attitude of the stop block is offset, the third alarm module is triggered.

[0009] The cross-line alarm component, the infrared alarm component, and the offset alarm component are all located between the upper belt and the lower belt.

[0010] Preferably, a cable collector is fixed to one side of the lower belt. The cable collector includes a cable management tube fixed to one side of the lower belt and a cable management head detachable from the end of the cable management tube. The cable management head has multiple channels for the cables of the cross-line alarm component, the infrared alarm component, and the offset alarm component to pass through.

[0011] Preferably, the support leg includes a conductive end made of a conductive material and an insulating end made of an insulating material, with the conductive wire passing through the conductive end laterally.

[0012] Preferably, there are three conductive wires spaced apart, with both ends of the conductive wires extending to the outer sides of the lower belt. The two outer conductive wires of the three conductive wires have a first polarity, and the middle conductive wire has a second polarity. The first polarity and the second polarity are opposite.

[0013] Preferably, the bottom side of the lower belt is fixed with a conduit for the cable of at least one of the infrared probes to extend from one side of the lower belt to the other side.

[0014] Preferably, support rods are fixed on both sides of the lower belt, and a horizontal platform is detachably connected to the support rods, with the infrared probe fixed to the top of the platform.

[0015] Preferably, a downward-extending suspension rod is fixed to one side of the lower belt, and the bottom end of the suspension rod is detachably connected to an angle iron with an opening facing downward. The proximity switch is fixed to the angle iron and fills the opening of the angle iron.

[0016] Preferably, a trigger baffle is fixed on the stop iron to block the signal receiving end of the proximity switch when the stop iron is in a suspended state, and the trigger baffle rotates synchronously with the stop iron.

[0017] As can be seen from the above technical solution, the composite belt tear protection device provided by this utility model has a conveyor belt moving in a two-layer posture. The cross-line alarm component, the offset alarm component, and the infrared alarm component are all located between the two belt layers. After the coal falls from the upper belt to the lower belt, small and dense pieces of coal will block the infrared rays emitted by the infrared probe, preventing the infrared probes on both sides of the belt from receiving signals from each other, thus triggering the second alarm module. When the coal is large, it will fall on the conductive wire, connecting two adjacent conductive wires to form a circuit, thus triggering the first alarm module. When there is coal on the lower belt, as the coal moves with the lower belt, the stop iron is hit by the coal and undergoes a change in posture or displacement. After the proximity sensor obtains the signal, it triggers the third alarm module, thereby achieving the anti-tear protection of the belt. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the structure of a composite belt tear protection device according to an exemplary embodiment.

[0020] Figure 2 This is illustrated according to an exemplary embodiment. Figure 1 The middle section is an enlarged view of part A, showing the structure of the cross-line alarm component;

[0021] Figure 3 This is illustrated according to an exemplary embodiment. Figure 1 The middle view is an enlarged view of part B, which shows the structure of the hub;

[0022] Figure 4 This is illustrated according to an exemplary embodiment. Figure 1 The middle section is an enlarged view of part C, which shows the structure of the offset alarm component;

[0023] Figure 5 This is a schematic diagram illustrating the location of the conduit according to an exemplary embodiment.

[0024] Figure label:

[0025] 1. Cross-line alarm component; 11. Conductive wire; 12. Support leg; 121. Conductive end; 122. Insulated end; 2. Infrared alarm component; 21. Infrared detector; 22. Support rod; 23. Platform; 24. Cable routing conduit; 3. Offset alarm component; 31. Stop; 32. Proximity switch; 4. Support keel; 5. Cable hub; 51. Cable management conduit; 52. Cable end management; 53. Channel; 6. Shaft; 61. Connecting rod; 62. Fixing sleeve; 63. Trigger baffle; 64. Support rod; 65. Hanging rod; 66. Angle iron. Detailed Implementation

[0026] This utility model discloses a composite belt longitudinal tear protection device. The conveyor belt moves in a two-layer posture. The cross-line alarm component, the offset alarm component, and the infrared alarm component are all located between the two belt layers. After the coal falls from the upper belt to the lower belt, small and dense pieces of coal will block the infrared rays emitted by the infrared probes, preventing the infrared probes on both sides of the belt from receiving signals from each other, thus triggering the second alarm module. When the coal is larger, it will fall on the conductive wires, connecting two adjacent conductive wires to form a circuit, thus triggering the first alarm module. When there is coal on the lower belt, as the coal moves with the lower belt, the stop iron is hit by the coal and undergoes a change in posture or displacement. The proximity sensor obtains the signal and triggers the third alarm module, thereby achieving belt tear protection.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This disclosure provides a composite belt longitudinal tear protection device in exemplary embodiments, such as... Figure 1 As shown, Figure 1 This is a schematic diagram illustrating the structure of a composite belt tear protection device according to an exemplary embodiment. Figure 2 This is illustrated according to an exemplary embodiment. Figure 1 The middle section is an enlarged view of part A, showing the structure of the cross-line alarm component; Figure 3 This is illustrated according to an exemplary embodiment. Figure 1 The middle view is an enlarged view of part B, which shows the structure of the hub; Figure 4 This is illustrated according to an exemplary embodiment. Figure 1 The middle section is an enlarged view of part C, which shows the structure of the offset alarm component; Figure 5 This is a schematic diagram illustrating the location of a conduit according to an exemplary embodiment. The following is in conjunction with... Figures 1 to 5To explain.

[0029] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.

[0030] Reference Figure 1 and Figure 5 This disclosure provides an exemplary embodiment of a composite belt longitudinal tear protection device, which includes:

[0031] Additional references Figure 2 The cross-line alarm component 1 includes multiple conductive wires 11 that are laid across the lower belt and spaced apart, support legs 12 for supporting the conductive wires 11 above the lower belt, and a first alarm module. When two adjacent conductive wires 11 are connected, the first alarm module is triggered.

[0032] Additional references Figure 3 The infrared alarm component 2 includes at least two infrared probes 21 located on both sides of the lower belt and corresponding to each other, and a second alarm module. The infrared rays emitted by the infrared probes 21 are higher than the conductive wires 11. When the infrared rays emitted by the infrared probes 21 are blocked, the second alarm module is triggered.

[0033] Additional references Figure 4 The offset alarm component 3 includes a stop 31 rotatably connected above the lower belt and spanning the lower belt, a proximity switch 32 fixed above the lower belt and facing the stop 31, and a third alarm module. The rotation axis of the stop 31 is perpendicular to the travel direction of the bottom of the lower belt. When the position and / or attitude of the stop 31 is offset, the third alarm module is triggered.

[0034] The cross-line alarm component 1, infrared alarm component 2, and offset alarm component 3 are all located between the upper belt and the lower belt.

[0035] For example, Figure 1 The X direction shown is the direction of movement of the lower belt (not shown), which is located below the offset alarm component 3; Figure 1 The Y-direction shown is the direction of movement of the upper belt (not shown), which is located above the cross-line alarm component 1. The X-direction is parallel to the Y-direction but opposite in direction. A horizontally placed support keel 4 is fixed in the space between the upper and lower belts. The support keel 4 is set perpendicular to the X-direction. The cross-line alarm component 1, infrared alarm component 2, and offset alarm component 3 are all fixed on the support keel 4 to remain between the upper and lower belts. The support keel 4 can be fixed in posture and position by fixing its two ends to a solid mounting base on the outside of the lower belt. For example, the end of the support keel 4 can be fixed to the frame of the belt conveyor on the outside of the upper belt.

[0036] The bottom end of the support leg 12 is fixedly connected to the top surface of the supporting keel 4, and the top end of the support leg 12 extends vertically upward. There are three conductive wires 11, which are spaced apart along the X direction. All three conductive wires 11 are horizontal and perpendicular to the X direction. Each support leg 12 is connected to one conductive wire 11. The three conductive wires 11 divide the support leg 12 into three groups in the X direction. The two ends of the conductive wires 11 extend to the outer sides of the lower belt. The two outer conductive wires 11 have the first polarity, and the middle conductive wire 11 has the second polarity. The first polarity and the second polarity are opposite. For example, the two outer conductive wires 11 are connected to the positive terminal of the power supply, and the middle conductive wire 11 is connected to the negative terminal of the power supply. Of the two conductive wires 11 connected to the positive terminal of the power supply, one conductive wire 11 is directly led to the positive terminal of the power supply to achieve the connection. In this embodiment, this can be defined as the main wire. The other conductive wire 11 is overlapped with the aforementioned main wire to achieve the connection with the positive terminal of the power supply.

[0037] One end of the conductive wire 11 is connected to the power supply, and the other end of the conductive wire 11 is left unattended. The first alarm module is connected between the aforementioned main line and the power supply. In other embodiments, the first alarm module can also be connected between the aforementioned conductive wire 11, which is directly connected to the negative terminal of the power supply, and the power supply.

[0038] The support leg 12 includes a conductive end 121 made of conductive material and an insulating end 122 made of insulating material. For example, the top of the support leg 12 is made of copper and the bottom of the support leg 12 is made of plastic. The conductive wire 11 passes through the copper conductive end 121 in a horizontal direction and is supported and suspended above the support keel 4 by the conductive end 121.

[0039] There are two infrared sensors 21, which are located at both ends of the supporting keel 4. The two infrared sensors 21 are arranged opposite each other and are connected to the second alarm module. When there is no obstruction between the two infrared sensors 21, the light emitted by one infrared sensor 21 can be captured by the other infrared sensor 21, and the second alarm module is in a silent state. When there is obstruction between the two infrared sensors 21, the light emitted by one infrared sensor 21 cannot be captured by the other infrared sensor 21, and the second alarm module triggers an alarm.

[0040] A vertically arranged support rod 22 is fixedly connected to the support keel 4. Support rods 22 are fixed on both sides of the lower belt. There are four support rods 22 on each side of the lower belt. A horizontally placed platform 23 is detachably connected to the support rod 22. The platform 23 is supported by the four support rods 22. The infrared probe 21 is fixed to the top of the platform 23 in a horizontal position. The light emitted by the infrared probe 21 is perpendicular to the X direction.

[0041] A rotating shaft 6 is rotatably connected to the side of the supporting keel 4 facing the X direction. The rotating shaft 6 is set along the length of the supporting keel 4. The rotating shaft 6 includes a fixed sleeve 62 fixedly connected to the supporting keel 4 and a connecting rod 61 inserted into the fixed sleeve 62. There are two fixed sleeves 62, which are respectively located at both ends of the supporting keel 4. The two ends of the connecting rod 61 are respectively inserted into the two fixed sleeves 62. The connecting rod 61 is coaxially set with the fixed sleeve 62 and can rotate around its own axis. The stop 31 is fixedly connected to the connecting rod 61. When the stop 31 is only subjected to gravity, the stop 31 is suspended vertically above the lower belt.

[0042] A downward-extending suspension rod 65 is fixed to one side of the lower belt. The suspension rod 65 is in a vertical position. The top of the suspension rod 65 is fixedly connected to the support keel 4, and the bottom of the suspension rod 65 extends to the bottom of the support keel 4. The bottom of the suspension rod 65 is detachably connected to an angle iron 66 with an opening facing downward. For example, the angle iron 66 is bolted to the suspension rod 65. The proximity switch 32 is fixed to the angle iron 66 and fills the opening of the angle iron 66. The proximity switch 32 is in a horizontal position and is set towards the end of the stop 31. The third alarm module is connected to the proximity switch 32.

[0043] A trigger baffle 63 is fixed on the connecting rod 61 to block the signal receiving end of the proximity switch 32 when the stop 31 is in a suspended state. The trigger baffle 63 rotates synchronously with the stop 31. When the stop 31 is only subjected to gravity, the transmitting end of the proximity switch 32 is set towards the trigger baffle 63. At this time, the third alarm module is in a silent state. When the stop 31 is deflected by the material moving with the lower belt, the connecting rod 61 drives the trigger baffle 63 to rotate synchronously. The transmitting end of the proximity switch 32 detects the displacement of the trigger baffle 63, and the third alarm module responds with an alarm.

[0044] In this embodiment, the conveyor belt moves in a two-layer posture. The cross-line alarm component 1, the offset alarm component 3, and the infrared alarm component 2 are all located between the two layers of belt. After the coal falls from the upper layer of belt to the lower layer of belt, small and dense pieces of coal will block the infrared rays emitted by the infrared probe 21, so that the infrared probes 21 located on both sides of the belt cannot receive signals from each other, thereby triggering the second alarm module. When the coal is large, it will fall on the conductive wire 11, and the coal can connect two adjacent conductive wires 11 to form a path, thereby triggering the first alarm module. When there is coal on the lower layer of belt, as the coal moves with the lower layer of belt, the stop 31 is hit by the coal and undergoes a change in posture or displacement. After the proximity sensor obtains the signal, it triggers the third alarm module, thereby realizing the tear protection of the belt.

[0045] In an exemplary embodiment of this disclosure, reference is made to Figure 1 and Figure 3A cable collector 5 is fixed on one side of the lower belt. The cable collector 5 includes a cable management tube 51 fixed on one side of the lower belt and a cable management head 52 detachable from the end of the cable management tube 51. The cable management head 52 has multiple channels 53 for the cable of the cross-line alarm component 1, the cable of the infrared alarm component 2 and the cable of the offset alarm component 3 to pass through.

[0046] For example, the cable management tube 51 is fixedly connected to the side of the support keel 4 facing the X direction in a horizontal position, and the cable management tube 51 is located at the end of the support keel 4. The cable management tube 51 is arranged along the length direction of the support keel 4. The cable management head 52 is threadedly connected to the end of the cable management tube 51 facing the stop 31. The cables that power the conductive wire 11, the infrared probe 21 and the proximity switch 32 are all collected inside the cable management tube 51 through different channels 53.

[0047] In this embodiment, refer to Figure 5 The bottom side of the lower belt is fixed with a cable tray 24 for at least one infrared probe 21 to extend from one side of the lower belt to the other side. The cable tray 24 is fixed to the support keel 4 facing the Y direction. The cable tray 24 is arranged along the length of the support keel 4 so that the cable on the infrared probe 21 fixed on the support keel 4 away from the cable tray 51 can be collected and extended to the cable head 52. After passing through a separate channel 53, it is collected in the cable tray 51.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite belt longitudinal tear protection device, characterized in that, include: The cross-line alarm component (1) includes multiple conductive wires (11) that are laid across the lower belt and spaced apart, a support leg (12) for supporting the conductive wires (11) above the lower belt, and a first alarm module. When two adjacent conductive wires (11) are connected, the first alarm module is triggered. The infrared alarm component (2) includes at least two infrared probes (21) located on both sides of the lower belt and corresponding to each other, and a second alarm module. The infrared rays emitted by the infrared probes (21) are higher than those emitted by the conductive wire (11). When the infrared rays emitted by the infrared probes (21) are blocked, the second alarm module is triggered. The offset alarm component (3) includes a stop (31) rotatably connected above the lower belt and spanning the lower belt, a proximity switch (32) fixed above the lower belt and facing the stop (31), and a third alarm module. The rotation axis of the stop (31) is perpendicular to the travel direction of the bottom of the lower belt. When the position and / or attitude of the stop (31) is offset, the third alarm module is triggered. The cross-line alarm component (1), the infrared alarm component (2), and the offset alarm component (3) are all located between the upper belt and the lower belt.

2. The composite belt longitudinal tear protection device according to claim 1, characterized in that, A cable hub (5) is fixed on one side of the lower belt. The cable hub (5) includes a cable management tube (51) fixed on one side of the lower belt and a cable management head (52) detachable from the end of the cable management tube (51). The cable management head (52) has multiple channels (53) for the cable of the cross-line alarm component (1), the cable of the infrared alarm component (2), and the cable of the offset alarm component (3) to pass through.

3. The composite belt longitudinal tear protection device according to claim 1, characterized in that, The support leg (12) includes a conductive end (121) made of conductive material and an insulating end (122) made of insulating material, and the conductive wire (11) passes through the conductive end (121) laterally.

4. The composite belt longitudinal tear protection device according to claim 1, characterized in that, There are three conductive wires (11) that are spaced apart. The two ends of the conductive wires (11) extend to the outer sides of the lower belt. The two conductive wires (11) on the outer side are of the first polarity, and the conductive wire (11) in the middle is of the second polarity. The first polarity and the second polarity are opposite.

5. The composite belt longitudinal tear protection device according to claim 1, characterized in that, The bottom side of the lower belt is fixed with a conduit (24) for the cable of at least one of the infrared probes (21) to extend from one side of the lower belt to the other side.

6. The composite belt longitudinal tear protection device according to claim 1, characterized in that, Both sides of the lower belt are fixed with support rods (22), and a horizontal platform (23) is detachably connected to the support rods (22). The infrared probe (21) is fixed to the top of the platform (23).

7. The composite belt longitudinal tear protection device according to claim 1, characterized in that, A downward-extending suspension rod (65) is fixed to one side of the lower belt. The bottom end of the suspension rod (65) is detachably connected to an angle iron (66) with an opening facing downward. The proximity switch (32) is fixed to the angle iron (66) and fills the opening of the angle iron (66).

8. The composite belt longitudinal tear protection device according to claim 1, characterized in that, A trigger baffle (63) is fixed on the stop (31) to block the signal receiving end of the proximity switch (32) when the stop (31) is in a suspended state. The trigger baffle (63) rotates synchronously with the stop (31).

Images