Device for preventing materials from sliding down on belt conveyor

Abstract

A device for preventing materials from sliding down on a belt conveyor is characterized in that supports are vertically fixed on racks on two opposite sides of the belt conveyor respectively, a rotating shaft is rotatably arranged at the top ends of the two supports in a penetrating manner, a striker plate is fixedly connected to the rotating shaft between the two supports, and the striker plate is arranged above a belt. The two sides of the material blocking plate are connected with the corresponding supports through supporting springs correspondingly. Limiting rods are vertically fixed to the ends, penetrating out of the support, of the rotating shaft respectively, one end of each limiting rod is fixedly connected with the end of the rotating shaft, a U-shaped clamping seat is fixed to the position, close to one side of each limiting rod, of the support, and the rotating shaft is sleeved with the U-shaped clamping seat with a downward opening. When the free end of the limiting rod rotates to the position between the two ends of the U-shaped clamping base, the supporting spring is in a natural state, the material blocking plate is obliquely arranged, and the bottom end of the material blocking plate faces the belt conveyor head. When the limiting rod rotates to abut against the end of the U-shaped clamping base, the supporting spring is compressed, and the plate face of the material blocking plate is perpendicular to the material conveying direction.

Description

Technical Field:

[0001] The utility model relates to the technical field of preventing materials from sliding and rolling down, and particularly relates to a device for preventing materials from sliding on a belt conveyor. Background Art:

[0002] A belt conveyor is a continuous transportation machine, which can be used to transport various solid lumps, powdery materials or viscous materials, etc., can realize continuous production, and has the advantages of high efficiency, simple operation, convenient maintenance, low operation cost, etc., and is widely used in industries such as iron and steel, cement, coal mines, etc.

[0003] At present, the gangue materials in the coal preparation plant are washed out by water washing or medium washing and stored in the storage bin. The water on the gangue materials deposits at the bottom of the storage bin. When using a belt conveyor with a large inclination angle to convey the gangue materials to a high place, the water and gangue gush out onto the belt at the same time, and all the materials on the belt will directly slide down along with the water to the tail of the belt conveyor. The gangue materials are rolled into the tail roller, which will cause the belt to be torn or the roller to be damaged, and even cause equipment damage and personnel injury. Content of the Utility Model:

[0004] The purpose of the utility model is to provide a device for preventing materials from sliding on a belt conveyor.

[0005] The purpose of the utility model is implemented by the following technical solution: A device for preventing materials from sliding on a belt conveyor, which includes a bracket, a rotating shaft, a material baffle, a supporting spring, a limiting rod and a U-shaped clamping seat;

[0006] The brackets are respectively fixed on the frames on the opposite sides of the belt conveyor. The rotating shaft is rotatably penetrated through the tops of the two brackets. The material baffle is fixedly connected to the rotating shaft between the two brackets. The material baffle is placed above the belt, and both sides of the material baffle are respectively connected to the corresponding brackets through the supporting springs; The limiting rods are respectively vertically fixed on the ends of the rotating shaft penetrating through the brackets, and one end of the limiting rod is fixedly connected to the end of the rotating shaft. The U-shaped clamping seat is fixed on the bracket close to the limiting rod side, and the U-shaped clamping seat is sleeved on the rotating shaft with the opening facing downwards; When the free end of the limiting rod rotates to the middle of the two ends of the U-shaped clamping seat, the supporting spring is in a natural state, the material baffle is obliquely arranged and the bottom end of the material baffle faces the direction of the belt head. At this time, the material baffle is in an initial state; When the limiting rod rotates to abut against the end of the U-shaped clamping seat, the supporting spring is compressed, and the plate surface of the material baffle is perpendicular to the material conveying direction. At this time, the material baffle is in a final state.

[0007] Preferably, each of the brackets includes a back plate, a first side plate and a second side plate which are oppositely arranged. The back plates of the two brackets are fixedly arranged on the frame of the belt conveyor relatively. On the surface of the back plate on the side far from the belt conveyor, the first side plate and the second side plate with opposite surfaces are fixedly arranged at intervals along the length direction; the rotating shaft is rotatably arranged between the back plates of the two brackets, the U-shaped clamping seat is fixed on the surface of the back plate, and the U-shaped clamping seat is sleeved on the rotating shaft between the first side plate and the second side plate.

[0008] Preferably, a proximity switch is fixedly arranged on the inner side of the first side plate. The proximity switch is electrically connected to the input end of the first controller. The output end of the first controller is respectively electrically connected to the PLC controller and the audible and visual alarm in the belt conveyor control system; when the limiting rod rotates to abut against the end of the U-shaped clamping seat, the free end of the limiting rod approaches the proximity switch.

[0009] Preferably, when the baffle is in the initial state, the included angle range α between the surface of the baffle and the material conveying direction is 40°-60°.

[0010] Advantages of the utility model: First, the utility model is provided with brackets, a rotating shaft, a baffle, a supporting spring, a limiting rod and a U-shaped clamping seat. A bracket is fixedly arranged on each of the relatively two sides of the frame near the tail of the belt conveyor. A rotating shaft is rotatably arranged between the two brackets. A baffle located above the belt is fixedly connected to the rotating shaft. The two sides of the baffle are respectively connected to the corresponding brackets through supporting springs. When the supporting springs are in the natural state, the baffle is located at the initial position, that is, the surface of the baffle is inclined, and the bottom end of the baffle is arranged towards the head direction of the belt; limiting rods are respectively vertically fixed on the ends of the rotating shaft passing through the brackets, and one end of the limiting rod is fixedly connected to the end of the rotating shaft. A U-shaped clamping seat is fixed on the bracket near the limiting rod, and the U-shaped clamping seat is sleeved on the rotating shaft with the opening facing downwards. When the baffle is at the initial position, the free end of the limiting rod is located in the middle of the two ends of the U-shaped clamping seat. When the gangue material on the belt rolls down along with the water and presses against the baffle, the supporting spring is compressed, the baffle rotates synchronously with the rotating shaft, driving the limiting rod to rotate. When the surface of the baffle rotates to be perpendicular to the material conveying direction, the limiting rod abuts against the end of the U-shaped clamping seat, and the baffle can block the material from continuing to slide and roll down, preventing the material from being rolled into the tail roller of the belt, causing belt tearing or roller damage.

[0011] Second, the utility model is also provided with a proximity switch. When the limiting rod rotates to abut against the end of the U-shaped clamping seat, the free end of the limiting rod just approaches the proximity switch. The proximity switch transmits a signal to the first controller, and the first controller transmits the signal to the PLC controller and the audible and visual alarm in the belt conveyor control system, driving the belt conveyor to stop running. At the same time, the audible and visual alarm emits a warning signal to prompt the operator to handle it in time and avoid danger. Brief Description of the Drawings:

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative labor, other drawings can also be obtained based on these drawings.

[0013] Figure 1 is a schematic structural diagram of the present invention.

[0014] Figure 2 is Figure 1 the A-A sectional view of

[0015] Figure 3 is a schematic diagram of the state when the plate surface of the baffle turns perpendicular to the material conveying direction.

[0016] The marks of each component in the drawings are as follows: bracket 1, back plate 1.1, first side plate 1.2, second side plate 1.3, rotating shaft 2, baffle 3, support spring 4, limiting rod 5, U-shaped clamping seat 6, proximity switch 7, frame 8, belt 9, idler bracket 10, idler 11. Detailed Embodiment:

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present invention.

[0018] As Figures 1 - 3 shown, a device for preventing material from sliding on a belt conveyor includes a bracket 1, a rotating shaft 2, a baffle 3, a support spring 4, a limiting rod 5, a U-shaped clamping seat 6 and a proximity switch 7; each bracket 1 includes a back plate 1.1, a first side plate 1.2 and a second side plate 1.3 arranged oppositely;

[0019] On the frames 8 on the opposite sides of the belt conveyor, brackets 1 are respectively fixed. The back plates 1.1 of the two brackets 1 are relatively fixed to the frame 8 of the belt conveyor. On the surface of the back plate 1.1 on the side far from the belt conveyor, a first side plate 1.2 and a second side plate 1.3 with opposite surfaces are fixedly arranged at intervals along the length direction. The first side plate 1.2 provides an installation position for the proximity switch 7, and the second side plate 1.3 provides an installation position for the support spring 4;

[0020] The rotating shaft 2 is rotatably arranged between the two brackets 1. Specifically, bearings are fixed at the relative positions at the tops of the back plates 1.1 of the two brackets 1, and the rotating shaft 2 is rotatably connected to the brackets 1 through the bearings; A baffle plate 3 placed above the belt 9 is fixedly connected to the rotating shaft 2 between the two brackets 1. The two sides of the baffle plate 3 are respectively connected to the second side plates 1.3 of the corresponding brackets 1 through support springs 4. The baffle plate 3 can rotate together with the rotating shaft 2 and has the function of blocking the material from sliding and rolling down;

[0021] Limit rods 5 are respectively vertically fixed at the ends of the rotating shaft 2 passing through each bracket 1, and one end of each limit rod 5 is fixedly connected to the end of the rotating shaft 2. A U-shaped card seat 6 is fixed on the back plate 1.1 of the bracket 1 close to the limit rod 5, and the U-shaped card seat 6 is sleeved downward on the rotating shaft 2; When the free end of the limit rod 5 rotates to the middle of the two ends of the U-shaped card seat 6, the support spring 4 is in a natural state. The baffle plate 3 is inclined, and the bottom end of the baffle plate 3 faces the head direction of the belt 9. The included angle range α between the surface of the baffle plate 3 and the material conveying direction is 40° to 60°. At this time, the baffle plate 3 is in the initial state. The baffle plate 3 is kept inclined through the support spring 4, so that there is a gap between the baffle plate 3 and the upper surface of the upper belt 9, facilitating the water in the gangue material to drain along the belt 9 through the gap; When the limit rod 5 rotates to abut against the end of the U-shaped card seat 6, the support spring 4 is compressed, and the surface of the baffle plate 3 turns to the vertical. At this time, the baffle plate 3 is in the final state. When the limit rod 5 rotates to abut against the end of the U-shaped card seat 6, the U-shaped card seat 6 can limit the continuous rotation of the limit rod 5, and further limit the rotation of the rotating shaft 2 driving the baffle plate 3, so that the baffle plate 3 can block the material from sliding and rolling down and prevent the baffle plate 3 from turning over; A proximity switch 7 is fixed inside the first side plate 1.2. The proximity switch 7 is electrically connected to the input end of the first controller. The output end of the first controller is respectively electrically connected to the PLC controller and the audible and visual alarm in the belt conveyor control system. When the limit rod 5 rotates to abut against the end of the U-shaped card seat 6, the free end of the limit rod 5 approaches the proximity switch 7. When the free end of the limit rod 5 approaches the sensing area of the proximity switch 7, the proximity switch 7 transmits a signal to the first controller, and the first controller transmits the signal to the PLC controller and the audible and visual alarm in the belt conveyor control system, driving the belt conveyor to stop running. At the same time, the audible and visual alarm emits a warning signal to prompt the operator to deal with it in time.

[0022] Installation and operation instructions: The belt conveyor is inclined and conveys materials from low to high. A number of idler supports 10 are evenly installed along the length direction on the frame 8 of the belt conveyor. Each idler support 10 is installed with an idler 11 for supporting the belt 9. The brackets 1 of the device for preventing material from sliding are respectively fixed on both sides of the frame 8 near the tail of the belt conveyor. The bottom outlet of the storage bin is placed above the middle part of the belt conveyor. When the gangue materials and water in the storage bin gush out onto the belt 9 at the same time, the gangue materials on the belt 9 slide down with the water to the extrusion baffle 3, the support spring 4 is compressed, the baffle 3 rotates synchronously with the rotating shaft 2, driving the limit rod 5 to rotate. When the plate surface of the baffle 3 turns perpendicular to the material conveying direction, the limit rod 5 abuts against the end of the U-shaped clamping seat 6, and the baffle 3 blocks the material from continuing to slide and roll, preventing the material from being rolled into the tail roller of the machine, causing belt tearing or roller damage. In addition, when the limit rod 5 rotates to abut against the end of the U-shaped clamping seat 6, the free end of the limit rod 5 just approaches the proximity switch 7. The proximity switch 7 transmits a signal to the first controller, and the first controller transmits the signal to the PLC controller and the audible and visual alarm in the belt conveyor control system, driving the belt conveyor to stop running. At the same time, the audible and visual alarm emits a warning signal to prompt the operator to deal with it in time and avoid danger.

[0023] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preventing materials from sliding down on a belt conveyor, characterized in that: It includes a bracket, a rotating shaft, a material blocking plate, a supporting spring, a limiting rod and a U-shaped clamping seat; The brackets are respectively fixed on the frames at opposite sides of the belt conveyor, the top ends of the two brackets are rotatably penetrated with the rotating shaft, and the baffle plate is fixedly connected to the rotating shaft between the two brackets, the baffle plate is placed above the belt, and the two sides of the baffle plate are respectively connected to the corresponding brackets through the supporting springs; the limiting rods are respectively vertically fixed on the ends of the rotating shaft passing through the brackets, and one end of the limiting rod is fixedly connected to the end of the rotating shaft, and the U-shaped holder is fixed on the bracket close to one side of the limiting rod, and the opening of the U-shaped holder is downwardly sleeved on the rotating shaft; when the free end of the limiting rod rotates to the middle of the two ends of the U-shaped holder, the supporting spring is in a natural state, the baffle plate is tilted and the bottom end of the baffle plate faces the direction of the belt conveyor head, at this time, the baffle plate is in an initial state; when the limiting rod rotates to abut against the end of the U-shaped holder, the supporting spring is compressed, and the plate surface of the baffle plate is perpendicular to the material conveying direction, at this time, the baffle plate is in a final state.

2. The device for preventing materials from sliding down on a belt conveyor according to claim 1, characterized in that: Each of the brackets includes a back plate, a first side plate and a second side plate that are arranged opposite to each other. The back plates of the two brackets are fixed opposite to each other on the frame of the belt conveyor. The first side plate and the second side plate that are arranged opposite to each other are fixed at intervals along the length direction on the plate surface of the back plate away from the belt conveyor. The rotating shaft is rotatably passed through the back plates of the two brackets, the U-shaped holder is fixed on the plate surface of the back plate, and the U-shaped holder is sleeved on the rotating shaft between the first side plate and the second side plate.

3. The device for preventing materials from sliding down on a belt conveyor according to claim 2, characterized in that: A proximity switch is fixed on the inner side of the first side panel, and the proximity switch is electrically connected to the input end of the first controller, and the output end of the first controller is electrically connected to the PLC controller and the sound and light alarm in the belt conveyor control system respectively; when the limit rod rotates to abut against the end of the U-shaped holder, the free end of the limit rod is close to the proximity switch.

4. The device for preventing materials from sliding down on a belt conveyor according to claim 1, characterized in that: When the material baffle plate is in the initial state, the angle α between the plate surface of the material baffle plate and the material conveying direction is in the range of 40° to 60°.

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