Large-dip-angle belt material tumbling prevention device

Abstract

The utility model belongs to the field of belt conveyors, and particularly relates to a large-dip-angle belt material tumbling prevention device. Comprising a support and a material blocking combination plate, and the material blocking combination plate is supported and hung above an upper-layer belt of the belt conveyor through the support. The material blocking combination plate is connected to the support in a swinging mode, can swing in the conveying direction of the belt conveyor and stops after being reset in the direction opposite to the conveying direction of the belt conveyor. The material blocking combination plates are arranged at intervals in the conveying direction of the belt conveyor. The material blocking combination plate comprises a rigid frame and a flexible rubber plate, the rigid frame is connected with the support, and the rubber plate is laid and attached to the side, facing the conveying direction of the belt conveyor, of the rigid frame. According to the large-dip-angle belt material rolling-down preventing device, the problem that coal briquettes roll down can be effectively solved, accumulation of the coal briquettes or impurities below a roadway is reduced, abrasion of a rubber belt is avoided, an operator only needs to carry out fixed-point cleaning after a belt conveyor is shut down in the overhaul period, labor intensity is reduced, and personal safety of the operator is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of belt conveyors, and in particular relates to a large-angle belt material rolling prevention device. Background Art

[0002] When using belt conveyors in inclined shafts with an angle greater than 16°, protective nets should be installed and safety measures should be taken to prevent materials from sliding or rolling.

[0003] The high-angle belt conveyor has the following problems during operation:

[0004] 1. When the coal is transported close to the unloading drum, the "U"-shaped belt becomes a "I" shape, causing the coal blocks to roll down easily, reducing the conveying efficiency of the belt conveyor;

[0005] 2. Material rolling often leads to the accumulation of more coal and impurities in the lower part of the tunnel, and even clogging, which makes it impossible to ensure the normal operation of the conveyor. In serious cases, the belt is even worn out. The belt interface is vulcanized once every six months on average, and the service life is less than two years, which greatly reduces the service life of the belt, increases the equipment maintenance and maintenance personnel input, and the maintenance cost remains high, increasing the burden on manpower, material and financial resources;

[0006] 3. Since materials often roll down, workers need to be regularly arranged to clean up along the line, which not only increases the labor intensity of workers, but also easily causes material rolling and injuring people during the coal cleaning process, posing a major hidden danger to coal mine safety production.

[0007] Certain measures need to be taken urgently for this belt conveyor to ensure safe production.

[0008] In the prior art, there are two types of preventive measures for preventing materials from rolling down on belts with large inclination angles:

[0009] Announcement No. CN203638562U discloses a material anti-slip device for a large-angle belt conveyor; a material baffle plate that can swing in one direction above the belt conveyor is used to prevent the material from sliding down. The material baffle plate is a hard plate. When the material on the belt conveyor, especially larger pieces of coal and gangue, pass by quickly, the coal and gangue frequently hit the material baffle plate, causing the material baffle plate to jump greatly.

[0010] Announcement No. CN112374030A discloses a device for preventing materials from sliding down and rolling on a coal mine underground belt. A fence structure that can swing in one direction above the belt conveyor is used as the material blocking body. Firstly, the fence structure can only block materials with larger particle sizes. Secondly, coal and gangue frequently hit the fence structure, and the fence structure will also jump greatly. Utility Model Content

[0011] The utility model aims to solve the problem of material rolling down on a belt with a large inclination angle. The material anti-slip device for a belt conveyor with a large inclination angle in the prior art has unsatisfactory use effect.

[0012] The utility model provides the following technical solutions: a large-angle belt material rolling prevention device, comprising a bracket and a material blocking combination plate, the material blocking combination plate is supported by the bracket and suspended above the upper belt of the belt conveyor; the material blocking combination plate is swingably connected to the bracket, can swing along the conveying direction of the belt conveyor, and stops after being reset against the conveying direction of the belt conveyor; the material blocking combination plates are arranged at intervals along the conveying direction of the belt conveyor; the material blocking combination plate comprises a rigid frame and a flexible rubber plate, the rigid frame is connected to the bracket, and the rubber plate is laid on the rigid frame facing the conveying direction of the belt conveyor.

[0013] Furthermore, the bottom edge of the rubber plate matches the curve of the upper belt of the belt conveyor; the bottom edge and two side edges of the rubber plate extend outward relative to the rigid frame.

[0014] Furthermore, the rigid frame includes longitudinal bars, transverse bars and top beams; the longitudinal bars are symmetrically distributed on both sides of the center line of the belt conveyor, the top ends of the longitudinal bars are connected to the top beams, the top beams are connected to the brackets, the transverse bars are perpendicular to the longitudinal bars, and the transverse bars are distributed on the longitudinal bars at intervals; the bottom ends of the longitudinal bars extend outward relative to the top beams, and the two ends of the transverse bars extend outward relative to the longitudinal bars.

[0015] Further, the rubber plate is connected to the rigid frame by bolts.

[0016] Furthermore, the rigid frame includes two longitudinal bars and two transverse bars, and the two longitudinal bars and the two transverse bars are connected to form a "well" shape.

[0017] Furthermore, the support is a "door" type support, and the support is installed on the middle frame of the belt conveyor; the material blocking assembly plate is connected to the crossbeam of the support.

[0018] Furthermore, the top beam of the material-blocking assembly plate is connected to the cross beam of the bracket through a bearing seat; a stopper is provided on the cross beam of the bracket, and the stopper stops the top beam to limit the swing of the material-blocking assembly plate against the conveying direction of the belt conveyor.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The utility model provides a large-angle belt material rolling prevention device, which can effectively prevent the problem of coal blocks rolling down, reduce the accumulation of coal blocks or impurities under the tunnel, and avoid belt wear. During maintenance, operators only need to perform fixed-point cleaning after the belt conveyor stops, which reduces labor intensity and ensures the personal safety of operators.

[0021] The whole set of high-angle belt material rolling prevention device is installed on the middle frame of the belt conveyor body at a certain interval. The material blocking combination plate can be turned along the coal flow direction and stopped against the coal flow direction. When the belt conveyor is transporting raw coal at a high angle, the material blocking combination plate installed on the body can rotate along the raw coal conveying direction without affecting the transportation of raw coal. Once the raw coal rolls in the opposite direction, the material blocking combination plate can only rotate in one direction, thereby preventing the raw coal from rolling, thus achieving efficient transportation without affecting material transportation and preventing material rolling.

[0022] The material-blocking combination plate includes a rigid frame and a flexible rubber plate. The rigid frame serves as a supporting skeleton, and the rubber plate serves as a flexible buffer. The supporting skeleton resists the thrust when coal and gangue slide down. When the coal and gangue move with the belt, the coal and gangue contact the rubber plate and push the material-blocking combination plate to reverse. Part of the impact force of the coal and gangue is consumed by the rubber plate, and the force transmitted to the supporting skeleton is reduced, and the swing amplitude of the material-blocking combination plate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a device for preventing materials from rolling off a large-angle belt;

[0024] Figure 2 This is a schematic diagram of the installation of a device to prevent materials from rolling off a large-angle belt.

[0025] In the figure: 1- bracket; 2- material blocking assembly plate; 2.1- rubber plate; 2.2- longitudinal rod; 2.3- cross rod; 2.4- top beam; 3- belt conveyor; 4- bearing seat; 5- stopper. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] like Figure 1 , Figure 2 As shown: a device for preventing materials from rolling off a large-angle belt, comprising a bracket 1 and a material-blocking assembly plate 2, wherein the material-blocking assembly plate 2 is supported by the bracket 1 and suspended above the upper belt of the belt conveyor 3; the material-blocking assembly plate 2 is swingably connected to the bracket 1, can swing along the conveying direction of the belt conveyor 3, and stop after being reset against the conveying direction of the belt conveyor 3; the material-blocking assembly plates 2 are arranged at intervals along the conveying direction of the belt conveyor 3; the material-blocking assembly plate 2 comprises a rigid frame and a flexible rubber plate 2.1, the rigid frame is connected to the bracket 1, and the rubber plate 2.1 is laid on the rigid frame and faces the side of the conveying direction of the belt conveyor.

[0028] The bottom edge of the rubber plate 2.1 matches the curve of the upper belt of the belt conveyor 3; the bottom edge and both sides of the rubber plate 2.1 extend outward relative to the rigid frame; the rubber plate 2.1 contacts the coal and gangue in all directions of the material blocking assembly plate 2, forming an all-round flexible buffer.

[0029] The rigid frame includes a longitudinal bar 2.2, a transverse bar 2.3 and a top beam 2.4; the longitudinal bar 2.2 is symmetrically distributed on both sides of the center line of the belt conveyor 3, the top of the longitudinal bar 2.2 is connected to the top beam 2.4, the top beam 2.4 is connected to the bracket 1, the transverse bar 2.3 is perpendicular to the longitudinal bar 2.2, and the transverse bars 2.3 are distributed on the longitudinal bar 2.2 at intervals; the bottom end of the longitudinal bar 2.2 protrudes relative to the top beam 2.4, and the two ends of the transverse bar 2.3 protrude relative to the longitudinal bar 2.2.

[0030] The rigid frame includes two longitudinal bars 2.2 and two transverse bars 2.3, which are connected to form a "well" shape; the longitudinal bars 2.2 and the transverse bars 2.3 are made of angle steel; the edge of the rigid frame is an open structure, which gives the rubber plate 2.1 more and limited deformation space, enhances the buffering effect and ensures sufficient support force.

[0031] The rubber plate 2.1 is connected to the rigid frame by bolts. The rubber plate 2.1 is easy to replace after being worn or broken. The rubber plate 2.1 is used as a consumable, which reduces the maintenance cost of the entire large-angle belt material rolling prevention device.

[0032] The bracket 1 is a "door" type bracket, and the bracket 1 is installed on the middle frame of the belt conveyor; the material blocking assembly plate 2 is connected with the crossbeam of the bracket 1.

[0033] The top beam 2.4 of the material blocking assembly plate 2 is connected to the cross beam of the bracket 1 through the bearing seat 4; a stopper 5 is provided on the cross beam of the bracket 1, and the stopper 5 stops the top beam 2.4 and limits the swing of the material blocking assembly plate 2 against the conveying direction of the belt conveyor 3.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for preventing materials from rolling off a belt with a large inclination angle, characterized in that: The invention comprises a support (1) and a material blocking assembly plate (2), wherein the material blocking assembly plate (2) is supported by the support (1) and suspended above the upper belt of the belt conveyor (3); the material blocking assembly plate (2) is swingably connected to the support (1), can swing in the conveying direction of the belt conveyor (3), and stops after being reset in the opposite direction of the conveying direction of the belt conveyor (3); the material blocking assembly plates (2) are arranged at intervals along the conveying direction of the belt conveyor (3); the material blocking assembly plate (2) comprises a rigid frame and a flexible rubber plate (2.1), the rigid frame is connected to the support (1), and the rubber plate (2.1) is laid on the rigid frame and faces the conveying direction of the belt conveyor.

2. The device for preventing materials from rolling off a large-angle belt according to claim 1, characterized in that: The bottom edge of the rubber plate (2.1) matches the curve of the upper belt of the belt conveyor (3); the bottom edge and two side edges of the rubber plate (2.1) extend outward relative to the rigid frame.

3. The device for preventing materials from rolling off a large-angle belt according to claim 2 is characterized in that: The rigid frame comprises a longitudinal rod (2.2), a transverse rod (2.3) and a top beam (2.4); the longitudinal rod (2.2) is symmetrically distributed on both sides of the center line of the belt conveyor (3); the top end of the longitudinal rod (2.2) is connected to the top beam (2.4); the top beam (2.4) is connected to the bracket (1); the transverse rod (2.3) is perpendicular to the longitudinal rod (2.2); the transverse rod (2.3) is distributed on the longitudinal rod (2.2) at intervals; the bottom end of the longitudinal rod (2.2) protrudes outward relative to the top beam (2.4); and the two ends of the transverse rod (2.3) protrude outward relative to the longitudinal rod (2.2).

4. The device for preventing materials from rolling off a large-angle belt according to claim 3 is characterized in that: The rubber plate (2.1) is connected to the rigid frame via bolts.

5. The device for preventing materials from rolling off a large-angle belt according to claim 2, characterized in that: The rigid frame comprises two longitudinal bars (2.2) and two transverse bars (2.3), and the two longitudinal bars (2.2) and the two transverse bars (2.3) are connected to form a "well" shape.

6. The device for preventing materials from rolling off a large-angle belt according to claim 3 is characterized in that: The support (1) is a "door" type support, and the support (1) is installed on the middle frame of the belt conveyor; the material blocking assembly plate (2) is connected to the crossbeam of the support (1).

7. The device for preventing materials from rolling off a large-angle belt according to claim 6, characterized in that: The top beam (2.4) of the material blocking assembly plate (2) is connected to the cross beam of the bracket (1) via a bearing seat (4); a stopper (5) is provided on the cross beam of the bracket (1), and the stopper (5) blocks the top beam (2.4) to limit the swing of the material blocking assembly plate (2) against the conveying direction of the belt conveyor (3).

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