Device for automatically stopping belt after material breakage

Abstract

The utility model relates to the technical field of belt conveying equipment, and particularly discloses an automatic stop device after belt material breakage, which comprises a brake table, a cross rod fixedly connected to one side of the brake table, a limiting stop rod rotationally connected to the cross rod, and a vertical rod fixedly connected to the cross rod and provided with a pressure sensor, one end of the limiting stop lever can be stirred by conveyed materials and inclines towards the direction close to the vertical rod, a reset structure which automatically resets after the materials of the belt are broken is arranged on the limiting stop lever, and an extrusion block which extrudes the pressure sensor after the limiting stop lever automatically resets is arranged at the other end of the limiting stop lever; the utility model solves the problems that after the blanking of the existing coal blending bunker is abnormal, the corresponding conveyor is broken, the other conveyors continuously convey the coal of the corresponding coal blending bunker, the coal on the conveyors cannot be uniformly blanked, the coal is not uniformly blanked, the conveying efficiency is high, and the like. And the coal blending proportion is not uniform.

Description

Technical Field

[0001] The present application relates to the technical field of belt conveyor equipment, and specifically discloses a device for automatically stopping the machine after the belt breaks. Background Art

[0002] Since the coal blending in the coking plant is carried out by multiple coal blending bins according to the set ratio, the raw materials with the set ratio are transported by conveyors and sent to the coal tower for coking in the coke oven. The conveyor usually includes a belt for coking coal transmission and a driving structure for driving the belt. The two ends of the conveyor are the feeding end and the discharging end respectively. At the same time, coal baffles are usually installed at both ends of the conveyor to prevent the coking coal from falling.

[0003] Each coal blending bunker is usually equipped with a conveyor, through which different types of raw coal are transported at the same time and transported to the coal tower for mixed production. In order to ensure normal unloading without blocking, the raw materials are usually evenly laid on the belt during transportation, so as to facilitate the control of the amount of materials put in. However, due to the long service life of the coal blending bunker, frequent failures occur and normal unloading cannot be guaranteed. After the unloading of one of the coal blending bunkers is abnormal and the conveyor is cut off, the remaining coal blending bunkers will continue to unload materials. During this period, the conveyors are operating normally, causing the remaining conveyors to continuously transport the corresponding types of coal, resulting in the coal blending ratio not being able to be matched according to the plan, and then causing the coal blending qualification rate to fail to meet the standard. Failure to match according to the planned ratio will ultimately affect the quality of coking coke. At the same time, when the unloading of the coal blending bunker is uneven, the laying height of the raw coal on the conveyor will be inconsistent, so that the coal cannot be guaranteed to fall evenly into the coal tower, which affects the unloading ratio and the quality of coking coal.

[0004] Therefore, in view of this, the inventor provides a device for automatically stopping the machine after the belt breaks, so as to solve the above-mentioned problem. Utility Model Content

[0005] The utility model aims to solve the problem that after the existing coal distribution bunker discharges materials abnormally, the corresponding conveyor breaks the material, and the remaining conveyors continue to transport the coal types corresponding to the coal distribution bunker, resulting in uneven coal distribution ratio.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides an automatic stopping device after the belt breaks, including a brake platform arranged at the feeding end of the conveyor, a cross bar fixedly connected to one side of the brake platform, a limit stop rod rotatably connected to the cross bar, and a vertical bar fixedly connected to the cross bar and provided with a pressure sensor. One end of the limit stop rod can be pushed by the conveyed material and tilted toward the direction close to the vertical bar. A stop block for limiting the rotation range of the limit stop rod is fixedly connected to the brake platform. The limit stop rod is provided with a reset structure for automatically resetting after the belt breaks. The other end of the limit stop rod is provided with an extrusion block for squeezing the pressure sensor after the limit stop rod is automatically reset. The utility model also includes a controller electrically connected to the pressure sensor, and the controller is electrically connected to the brake structure for controlling the belt braking and the material blocking structure for preventing the conveyor from falling.

[0007] Furthermore, the reset structure includes a rotating hole arranged on the cross bar, a rotating shaft rotatably connected to the rotating hole and fixedly connected to the middle of the limit stop rod, and a torsion spring arranged on the rotating shaft.

[0008] Furthermore, the material blocking structure includes an electric push rod disposed at the discharge end of the conveyor and electrically connected to the controller, and a material blocking plate disposed at the output end of the electric push rod for preventing materials from falling, and the material blocking plate is disposed at an angle.

[0009] Furthermore, the bottom of the baffle plate is provided with friction lines for increasing friction with the belt.

[0010] Furthermore, one end of the limit stop rod that can be moved by the conveyed material is provided with a material guide block for guiding the material.

[0011] Furthermore, a plurality of lifting and lowering support feet are provided at the bottom of the brake platform, and the support feet are all provided on the outer walls of the corresponding side coal retaining plates.

[0012] Furthermore, the conveyor includes a pulley on which the belt is meshed, and an anti-shake structure is provided on the pulley. The anti-shake structure includes an annular support plate fixed to the surface of the pulley, and heat dissipation holes are provided on the pulley. A support plate for supporting the belt is provided at the bottom of the belt.

[0013] The principle and effect of this scheme are:

[0014] 1. Compared with the prior art, the utility model uses the material transported by the conveyor to continuously push the limit stop bar to prevent the limit stop bar from resetting and squeezing the pressure sensor. When the belt breaks, the limit stop bar is reset through the reset structure and continuously squeezes the pressure sensor, thereby enabling the pressure sensor to transmit the signal of the belt break to the controller. The controller controls the material blocking structure to block the material and cooperates with the braking structure to brake the belt, thereby preventing other conveyors from continuing to feed. This solves the problem that after the existing conveyor breaks, the conveyor continues to transport materials without broken materials and cannot discharge materials evenly, resulting in uneven coal distribution ratio.

[0015] 2. The utility model drives the rotating shaft to reset by the torsion spring, so that when there is no material to move the limit stopper, the limit stopper can be reset. The reset limit stopper squeezes the pressure sensor through the squeezing block, thereby transmitting an electrical signal of material breaking to the controller.

[0016] 3. The utility model guides the material through the provided material guide block to prevent the material from being retained on the limit stopper and affecting the resetting of the limit stopper. The provided lifting support feet can support the brake platform and adjust the height of the brake platform.

[0017] 4. The utility model limits the rotation range of the limit stop rod by setting a stop block, so that when the coal bunker is unloaded evenly and the height of the raw coal on the belt is too high, the raw coal pushes the limit stop rod to rotate and resists the stop block, so that the guide block can block the raw materials above the average height, so that the raw coal is evenly laid on the belt, thereby achieving the effect of uniform material dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a device for automatically stopping a belt after a belt breaks proposed in an embodiment of the present application is shown;

[0020] Figure 2 A partial schematic diagram of a device for automatically stopping a machine after a belt breaks proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] The figure marks in the drawings of the specification include: conveyor 1, raw material 2, guide block 3, limit stop rod 4, rotating shaft 5, brake platform 6, support foot 7, extrusion block 8, pressure sensor 9, electric push rod 10, material baffle plate 11, heat dissipation hole 12, support plate 13, annular support plate 14, and stop block 15.

[0023] A device for automatically stopping a machine after a belt breaks, for example Figure 1As shown: it includes a brake platform 6 installed at the feeding end of the conveyor 1. Specifically, two sets of support feet 7 are symmetrically fixedly installed on the bottom of the brake platform 6. The support feet 7 are all arranged on the outer wall of the corresponding side coal baffle plate. The support feet 7 can be raised and lowered. After the lifting and lowering adjustment, the position of the brake platform 6 is fixed by the clamping column. The conveyor 1 includes a belt pulley meshed with a belt, and an anti-shake structure is arranged on the pulley. The anti-shake structure includes an annular support plate 14 fixed to the surface of the pulley, and the annular support plate 14 is in contact with the pulley. A plurality of heat dissipation holes 12 are arranged on the pulley, and a support plate 13 for supporting the belt is arranged at the bottom of the belt.

[0024] A cross bar is fixedly welded to the right side of the brake platform 6, and a rotatable limit stop rod 4 is installed on the cross bar.

[0025] In this embodiment, a rotating hole is opened on the cross bar, and a rotatable rotating shaft 5 is installed on the rotating hole. The rotating shaft 5 is fixedly arranged in the middle of the limit stop rod 4, and the limit stop rod 4 is provided with a reset structure for automatically resetting after the belt breaks. In this embodiment, the reset structure also includes a torsion spring arranged on the rotating shaft 5, and a connecting block is fixedly welded on the cross bar, and the two ends of the torsion spring are respectively connected to the connecting block and the rotating shaft 5. The bottom end of the limit stop rod 4 can be pushed by the conveyed material and cleaned in the direction close to the vertical rod. When the conveyor 1 breaks, the material no longer pushes the limit stop rod 4, and the limit stop rod 4 rotates in the direction perpendicular to the cross bar through the reset structure. A vertical rod is fixedly welded on the cross bar, and a pressure sensor 9 is installed on the vertical rod. The other end of the limit stop rod 4 is provided with an extrusion block 8 for squeezing the pressure sensor 9 after the limit stop rod 4 automatically resets, and the pressure sensor 9 is continuously squeezed by the extrusion block 8. The end of the limit stop rod 4 that abuts against the conveyed material is provided with a guide block 3 for guiding the material. The guide block 3 is parallel to the belt, and the angle formed by the guide block 3 and the limit stop rod 4 is an obtuse angle. Since the raw material 2 is evenly laid on the belt, the guide block 3 is always in contact with the raw material 2 and thus continuously pushes the limit stop rod 4. A stop block 15 is also fixedly welded on the brake platform 6. The stop block 15 can limit the rotation range of the limit stop rod 4, so that when the coal bunker is unloaded unevenly and the height of the raw coal on the belt is too high, the raw coal pushes the limit stop rod 4 to rotate and abuts against the stop block 15, so that the limit stop rod 4 has the effect of blocking the raw material 2 that is higher than the average height, thereby leveling the raw material 2 and making the raw coal evenly laid on the belt, thereby achieving the effect of uniform material dropping.

[0026] It also includes a controller electrically connected to the pressure sensor 9, and the controller is electrically connected to a brake structure for belt braking and a material blocking structure for material blocking. After the pressure sensor 9 senses continuous squeezing, it transmits a signal to the controller. After receiving the signal, the controller controls the brake structure to brake the belt. The brake structure can use a belt brake device, which is a prior art. The controller is a prior art. The brake program used by the controller is a prior art, and each conveyor 1 is provided with it.

[0027] In this embodiment, the material blocking structure includes an electric push rod 10 installed at the discharge end of the conveyor 1 and electrically connected to the controller. The electric push rod 10 is installed on the outer wall of the coal blocking plate to prevent the electric push rod 10 from affecting the normal discharge of the conveyor 1. The output end of the electric push rod 10 is detachably fixed with a blocking plate 11 for preventing the material from being discharged into the coal tower. The blocking plate 11 is tilted, specifically, it is tilted upward. The bottom of the blocking plate 11 is provided with friction lines that increase the friction with the belt, thereby pressing down the belt to assist in braking. When the material on the belt breaks, the controller controls the blocking plate 11 to contact the upper end surface of the belt. While braking, the blocking plate 11 blocks the material to prevent the material from falling from the discharge port, thereby preventing other conveyors 1 from continuously transporting materials to the coal distribution bin, resulting in an uneven coal distribution ratio.

[0028] The use process of the utility model is as follows: only through the cooperation of the controller and the pressure sensor 9, after one conveyor stops feeding, the braking structure and the material blocking structure are used to stop the remaining conveyors from conveying other coal blending raw materials 2. The utility model solves the problem that after the existing conveyor 1 stops feeding, the remaining conveyors 1 continue to transport other types of coal, resulting in uneven coal blending ratios.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for automatically stopping the machine after a belt breaks, characterized in that: It includes a brake platform arranged at the feeding end of the conveyor, a cross bar fixedly connected to one side of the brake platform, a limit stop rod rotatably connected to the cross bar, and a vertical bar fixedly connected to the cross bar and provided with a pressure sensor. One end of the limit stop rod can be pushed by the conveyed material and tilted toward the direction close to the vertical bar. A stop block for limiting the rotation range of the limit stop rod is fixed to the brake platform. The limit stop rod is provided with a reset structure which automatically resets after the belt breaks. The other end of the limit stop rod is provided with an extrusion block which squeezes the pressure sensor after the limit stop rod is automatically reset. It also includes a controller electrically connected to the pressure sensor. The controller is electrically connected to the brake structure for controlling the belt brake and the material blocking structure for preventing the conveyor from falling.

2. The automatic stopping device after belt breakage according to claim 1 is characterized in that: The reset structure comprises a rotating hole arranged on the cross bar, a rotating shaft rotatably connected to the rotating hole and fixedly connected to the middle of the position limiting blocking rod, and a torsion spring arranged on the rotating shaft.

3. The automatic stopping device after belt breakage according to claim 1 is characterized in that: The material blocking structure includes an electric push rod disposed at the discharge end of the conveyor and electrically connected to the controller, and a material blocking plate disposed at the output end of the electric push rod for preventing materials from falling, wherein the material blocking plate is disposed obliquely.

4. The automatic stopping device after belt breakage according to claim 3 is characterized in that: The bottom of the baffle plate is provided with friction lines for increasing friction with the belt.

5. The automatic stopping device after belt breakage according to claim 1 is characterized in that: The end of the limit stop rod that can be moved by the conveyed material is provided with a material guide block for guiding the material.

6. The automatic stopping device after belt breakage according to claim 1 is characterized in that: A plurality of lifting support feet are arranged at the bottom of the brake platform, and the support feet are all arranged on the outer wall of the corresponding side coal blocking plate.

7. The automatic stopping device after belt breakage according to claim 1 is characterized in that: The conveyor includes a belt and a pulley meshing with the belt, the pulley is provided with an anti-shake structure, the anti-shake structure includes an annular support plate fixed to the surface of the pulley, the pulley is provided with heat dissipation holes, and the bottom of the belt is provided with a support plate for supporting the belt.

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