Belt type conveying equipment capable of temporarily storing materials

Abstract

The invention discloses belt conveying equipment capable of temporarily storing materials. The belt conveying equipment comprises a rack, a belt conveyor arranged on the rack and a rear baffle arranged at the right end of the rack. Unpowered belt conveyors are arranged on the rack and located on the two sides of the belt conveyor respectively, and a bin body for containing materials is defined by the two unpowered belt conveyors and the belt conveyor. The method has the advantages that the energy consumption of equipment is obviously reduced, and the whole system is more efficient in operation because unnecessary friction loss is reduced; and meanwhile, the service lives of the horizontal conveying belt and a driving device thereof are effectively prolonged, and the abrasion of mechanical parts and the fault occurrence rate caused by high load are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of conveying equipment, and in particular to a belt conveying equipment capable of buffering materials. Background Art

[0002] In underground excavation projects, excavated materials need to be transported outward. As long as the underground excavation tunnel boring machine is working, it must be turned on to avoid the excavated materials blocking the passage. However, during the excavation process, the excavation volume of the excavation section is limited and small. Generally, the material conveying system of a small or medium-sized mine has two or three megawatt motors running every hour, but the actual conveying volume does not meet the full load requirements, resulting in energy waste.

[0003] my country's patent publication number CN 116424723 A discloses a flat gate type horizontal coal bunker. This bunker design uses a horizontal bunker body for temporary storage of excavated materials, which is particularly suitable for material storage in underground passage environments. The design aims to optimize the use of underground space while meeting the needs of material storage in narrow or limited height underground environments. However, due to the relatively small storage capacity of this horizontal bunker, the transportation system associated with it needs to be started frequently to process the stored materials, which increases energy consumption and equipment wear. Therefore, in order to reduce energy consumption and reduce the frequent start and stop of equipment, it is necessary to optimize the operation mode of the transportation system.

[0004] In response to the above shortcomings, my country's patent announcement number CN 217457445 U discloses a metering horizontal buffer bin. This innovative design aims to achieve a significant increase in material storage capacity by using a horizontal bin body combined with a transmission belt. The structure of this device is particularly suitable for application scenarios that require temporary storage and quantitative transportation of materials. However, in actual application, when the transmission belt starts and begins to transport materials, sliding friction will occur between the material on the transmission belt and the side wall of the horizontal bin body. This friction phenomenon becomes more obvious as the amount of material accumulated in the horizontal bin body increases, that is, the more material there is in the horizontal bin body, the greater the friction between the material and the inner wall of the bin body.

[0005] Therefore, when the equipment is used to load materials for transportation, the load caused by the increased friction also increases accordingly. The higher load not only increases the mechanical stress on the transmission belt, which easily causes the risk of belt tearing, but also brings additional pressure to the related transmission components of the drive equipment. In the long run, these transmission components such as gears and bearings may accelerate wear due to long-term heavy loads, thereby shortening the service life of related components, increasing maintenance costs and the incidence of failures. Therefore, although this horizontal buffer bin solves the problem of material storage to a certain extent, there is still room for further optimization in design to reduce the negative impact caused by high friction and improve the operating efficiency and reliability of the entire system. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a belt conveyor device capable of buffering materials.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: A belt conveyor device capable of buffering materials comprises a frame, a belt conveyor arranged on the frame, and a rear baffle arranged at the right end of the frame; unpowered belt conveyors are respectively arranged on the frame and on both sides of the belt conveyor, and the two unpowered belt conveyors and the belt conveyor form a warehouse for accommodating materials.

[0008] Preferably, the belt conveyor includes a driving roller rotatably mounted at the left end of the frame, a driven roller rotatably mounted at the right end of the frame, a horizontal conveyor belt wrapped around the driving roller and the driven roller, a plurality of upper rollers rotatably mounted on the frame for supporting the upper belt surface of the horizontal conveyor belt, a plurality of lower rollers rotatably mounted on the frame for supporting the lower belt surface of the horizontal conveyor belt, a first redirecting roller rotatably mounted at the left end of the frame and frictionally engaged with the lower belt surface of the horizontal conveyor belt, a second redirecting roller rotatably mounted at the right end of the frame and frictionally engaged with the lower belt surface of the horizontal conveyor belt, a cleaning mechanism arranged at the left end of the frame for cleaning the belt surface of the horizontal conveyor belt, and a driving device for driving the driving roller.

[0009] Preferably, the driving device includes a driving frame fixedly connected to the left end of the frame, a motor fixedly connected to the driving frame, and a reducer whose input end is drivingly connected to the output end of the motor through a high-speed coupling; the output end of the reducer is drivingly connected to the transmission roller through a low-speed coupling.

[0010] Preferably, the unpowered belt conveyor includes a plurality of unpowered rollers rotatably mounted on a frame in a vertical direction, and an unpowered conveyor belt wound around and engaged with the unpowered rollers; the inner belt surface of the unpowered conveyor belt is located at the upper end of the conveyor belt surface of the belt conveyor.

[0011] Preferably, a closed guide rail is fixedly connected to the frame above the unpowered conveyor belt, and the shape enclosed by the guide rail is consistent with the shape enclosed by the unpowered conveyor belt; a plurality of hangers are fixedly connected to the upper edge of the unpowered conveyor belt at intervals, and the hangers cooperate with the guide rail.

[0012] Preferably, the unpowered roller includes a rotating shaft rotatably connected to the frame, a cylinder body fixedly connected to the rotating shaft, and a guide wheel rotatably arranged on the rotating shaft and located below the cylinder body; the diameter of the guide wheel is smaller than the diameter of the cylinder body, and the side wall of the guide wheel is in contact with the upper belt surface of the horizontal conveyor belt.

[0013] Preferably, the unpowered roller and the upper roller are arranged alternately.

[0014] Preferably, a closable silo door is provided at the left end of the frame.

[0015] Preferably, the upper roller is divided into two sections, and a support seat for supporting the end of the upper roller is provided on the frame.

[0016] Preferably, the frame includes a head frame, a main frame located at the right side of the head frame, and a tail frame located at the right side of the main frame.

[0017] The above technical solution has the following advantages: The present invention arranges unpowered conveyor belts on both sides of the horizontal conveyor belt. When the horizontal conveyor belt is used for material conveying, the material contacts and generates friction with the unpowered conveyor belts on both sides. The sliding friction between the material and the unpowered conveyor belt is effectively converted into rolling friction between the unpowered conveyor belt and the unpowered roller. Since rolling friction has less resistance than sliding friction, the load borne by the horizontal conveyor belt and its driving device is significantly reduced. This improvement significantly reduces the energy consumption of the equipment because unnecessary friction losses are reduced, making the operation of the entire system more efficient; at the same time, it effectively prolongs the service life of the horizontal conveyor belt and its driving device, and reduces the wear and failure rate of mechanical parts caused by high loads. Since the equipment wear is reduced and the failure rate is reduced, the maintenance cost and downtime of the equipment are greatly reduced, and the production efficiency and economic benefits are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a first embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 for Figure 1 A magnified view of part B; Figure 4 for Figure 1 Enlarged view of part C; Figure 5 This is a simplified diagram of the transmission principle of the belt conveyor; Figure 6 It is a simplified diagram of the transmission principle of the drive device; Figure 7 is a three-dimensional diagram of a partial conveying section of the present invention, wherein the section lines are omitted; Figure 8 for Figure 7 End view of Fig. 9 for Figure 8 A magnified view of part D in the middle; Fig.10 for Figure 7 The structural diagram with horizontal conveyor belt and non-powered conveyor belt removed; Fig.11 for Fig.10 Enlarged view of part E in the middle; Fig.12 A cross-sectional view of another embodiment of the present invention; Fig.13 for Fig.12 Enlarged view of part F; In the figure: 1-frame, 2-belt conveyor, 3-rear baffle, 4-unpowered belt conveyor, 5-driving roller, 6-driven roller, 7-horizontal conveyor belt, 8-upper roller, 9-lower roller, 10-redirecting roller one, 11-redirecting roller two, 12-cleaning mechanism, 13-driving device, 14-driving frame, 15-motor, 16-high-speed coupling, 17-reducer, 18-low-speed coupling, 19-unpowered roller, 20-unpowered conveyor belt, 21-rotating shaft, 22-cylinder, 23-guide wheel, 24-silo door, 25-support seat, 26-head frame, 27-main frame, 28-tail frame, 29-guide rail, 30-hanging bracket. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example 1

[0020] As attached Figure 1-11As shown, a belt conveyor device capable of caching materials comprises a frame 1, a belt conveyor 2 arranged on the frame 1, and a rear baffle 3 arranged at the right end of the frame 1; unpowered belt conveyors 4 are respectively arranged on the frame 1 and on both sides of the belt conveyor 2, and the two unpowered belt conveyors 4 and the belt conveyor 2 form a warehouse for accommodating materials.

[0021] In this embodiment, the rear baffle 3 forms an enclosure at the rear side of the bin body. In order to reduce the impact of materials on the belt surface of the belt conveyor 2, the rear baffle 3 is inclined to guide and buffer the falling materials. In order to extend the service life of the belt surface of the belt conveyor 2 and the rear baffle 3, a buffer layer can also be provided on the surface of the rear baffle 3, or the upper roller 8 below the belt surface of the belt conveyor 2 that receives the materials can be installed in a manner having a buffer structure, such as the upper roller 8 being installed with a bracket capable of vertical vibration reduction. A buffer plate or other structure can also be provided at the corresponding position of the frame 1 to reduce the impact of materials on the belt surface of the belt conveyor 2.

[0022] As a specific technical solution of this embodiment, the belt conveyor 2 includes a driving roller 5 rotatably mounted at the left end of the frame 1, a driven roller 6 rotatably mounted at the right end of the frame 1, a horizontal conveyor belt 7 wound around the driving roller 5 and the driven roller 6, a plurality of upper rollers 8 rotatably mounted on the frame 1 for supporting the upper belt surface of the horizontal conveyor belt 7, a plurality of lower rollers 9 rotatably mounted on the frame 1 for supporting the lower belt surface of the horizontal conveyor belt 7, a redirecting roller 10 rotatably mounted at the left end of the frame 1 and frictionally engaged with the lower belt surface of the horizontal conveyor belt 7, a redirecting roller 2 11 rotatably mounted at the right end of the frame 1 and frictionally engaged with the lower belt surface of the horizontal conveyor belt 7, a cleaning mechanism 12 arranged at the left end of the frame 1 for cleaning the belt surface of the horizontal conveyor belt 7, and a driving device 13 for driving the driving roller 5. The cleaning mechanism 12 can adopt an existing mechanism and will not be described in detail.

[0023] As a specific technical solution of this embodiment, the driving device 13 includes a driving frame 14 fixedly connected to the left end of the frame 1, a motor 15 fixedly connected to the driving frame 14, and a reducer 17 whose input end is drivingly connected to the output end of the motor 15 through a high-speed coupling 16; the output end of the reducer 17 is drivingly connected to the driving roller 5 through a low-speed coupling 18. Obviously, the driving device 13 can also adopt other commonly used driving forms.

[0024] As a specific technical solution of this embodiment, the unpowered belt conveyor 4 includes a plurality of unpowered rollers 19 rotatably installed on the frame 1 along the vertical direction, and an unpowered conveyor belt 20 wound and engaged with the unpowered rollers 19; the inner belt surface of the unpowered conveyor belt 20 is located at the upper end of the conveyor belt surface of the belt conveyor 2.

[0025] In this example, the unpowered conveyor belt 20 forms the function of the side wall of the warehouse body through the support of the unpowered roller 19, that is, the unpowered conveyor belt 20 serves as the side wall of the warehouse body to realize material storage, and in the process of conveying materials, the friction between the unpowered conveyor belt 20 and the materials is greater than the rolling friction between the unpowered conveyor belt 20 and the unpowered roller 19, and the unpowered conveyor belt 20 will follow the movement of the materials; in actual use, some of the unpowered rollers 19 can be set to a structural form in which the tensioning force of the unpowered conveyor belt 20 can be adjusted, or a tensioning mechanism can be added. The relevant technology is existing technology and will not be repeated here.

[0026] As a further improved technical solution of this embodiment, the unpowered roller 19 includes a rotating shaft 21 rotatably connected to the frame 1, a cylinder 22 fixedly connected to the rotating shaft 21, and a guide wheel 23 rotatably arranged on the rotating shaft 21 and located below the cylinder 22; the diameter of the guide wheel 23 is smaller than the diameter of the cylinder 22, and the side wall of the guide wheel 23 contacts the upper belt surface of the horizontal conveyor belt 7. The guide wheel 23 can guide and limit the horizontal conveyor belt 7, ensuring that the unpowered conveyor belt 20 and the horizontal conveyor belt 7 can be effectively matched to avoid material leakage.

[0027] As a preferred technical solution of this embodiment, the unpowered roller 19 and the upper roller 8 are arranged alternately to ensure that the unpowered conveyor belt 20 and the horizontal conveyor belt 7 have sufficient support.

[0028] As a technical solution for further improvement of the present embodiment, a silo door 24 that can be opened and closed is provided at the left end of the frame 1. The silo door 24 is used to seal the left end of the silo when loading. When it is closed, it does not affect the operation of the belt conveyor 2. The silo door 24 can be a mechanical gear type or a hydraulic drive structure according to needs. The door body can be a lifting type or a flip type. You can refer to the silo doors of various existing silos and will not go into details. When it is necessary to buffer logistics, the silo door 24 is closed to form a relatively closed silo; when the material is full and needs to be unloaded, the silo door 24 is opened to discharge the material.

[0029] As a preferred technical solution of this embodiment, the upper roller 8 is divided into two sections, and a support seat 25 for supporting the end of the upper roller 8 is provided on the frame 1. The support seat 25 can support and strengthen the middle position of the upper roller 8 to prevent the upper roller 8 from deforming, and can also disperse the force on the bearing of the upper roller 8.

[0030] As a specific technical solution of this embodiment, the driven roller 6 is installed on the frame 1 through a tension adjustment mechanism (not shown in the figure). The tension adjustment mechanism is a prior art and will not be described in detail. Obviously, a tension roller and related mechanisms can also be provided separately.

[0031] As a specific technical solution of this embodiment, the frame 1 includes a head frame 26, a main frame 27 located on the right side of the head frame 26, and a tail frame 28 located on the right side of the main frame 27; in this embodiment, the head frame 26 is a heavy-duty structure, which can be a plate structure or a profile structure. The frame 1 of the present invention is a segmented assembly structure, which has the advantages of convenient disassembly and assembly and flexible use. The ideal design length of this machine is between 100-200 meters, which is the optimal length. The design length can also be increased or shortened according to actual needs. The usual material storage capacity is between 100-300 tons. This machine only requires 200-300 kilowatts to work, which can effectively reduce energy consumption, effectively save energy, and also save production and operation costs. Example 2

[0032] As attached Figure 12-13 As shown, a belt conveyor device capable of caching materials, wherein a closed guide rail (29) is fixedly connected to the frame (1) above the non-powered conveyor belt (20), and the shape enclosed by the guide rail (29) is consistent with the shape enclosed by the non-powered conveyor belt (20); a plurality of hangers (30) are fixedly connected to the upper edge of the non-powered conveyor belt (20) at intervals, and the hangers (30) are guided and matched with the guide rail (29). The rest is basically the same as that of Example 1.

[0033] In this embodiment, by providing a guide rail (29) and a hanger (30), an upward pulling force can be provided to the non-powered conveyor belt (20), thereby preventing the non-powered conveyor belt (20) from being deformed, and also reducing the friction between the non-powered conveyor belt (20) and the horizontal conveyor belt (7), thereby extending the service life. A common hanging rail structure is provided between the guide rail (29) and the hanger (30), and preferably a rolling friction pair is used to reduce resistance. Reference may be made to existing structures such as hanging door guide rails or curtain guide rails, and the details will not be repeated.

[0034] When the present invention is working, it is centrally linked with the entire transportation system for control. When the amount of excavated materials in the channel cannot meet the full load demand of the transportation system, the front-end outward transport equipment will be stopped; at this time, the channel excavation equipment will continue to transport materials to the right end of the belt conveyor 2, and the control system will adjust the belt conveyor 2 to low speed or intermittent low speed operation according to the amount of excavated materials, so that the materials are stacked to the designed thickness and slowly move to the left end; when the materials fill the entire silo, the front-end outward transport equipment will be restarted, the silo door 24 will be opened, and the speed of the belt conveyor 2 will be adjusted to match the front-end transport capacity; if the materials in the silo are not enough to meet the front-end transport demand, the excavation equipment will be temporarily stopped to allow the belt conveyor 2 to empty the materials in the silo; once the silo materials are completely emptied, the front-end transport equipment and the silo door 24 will be closed, and then excavation and collection of new materials will continue.

[0035] The present invention arranges the non-powered conveyor belts 20 on both sides of the horizontal conveyor belt 7. When the horizontal conveyor belt 7 is conveying materials, the materials contact and generate friction with the non-powered conveyor belts 20 on both sides. The sliding friction between the materials and the non-powered conveyor belts 20 is effectively converted into rolling friction between the non-powered conveyor belts 20 and the non-powered roller 19. Since rolling friction has less resistance than sliding friction, the load borne by the horizontal conveyor belt 7 and its driving device 13 is significantly reduced.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A belt conveyor device capable of caching materials, comprising a frame (1), a belt conveyor (2) arranged on the frame (1), and a rear baffle (3) arranged at the right end of the frame (1); characterized in that: On the frame (1), non-powered belt conveyors (4) are respectively arranged on both sides of the belt conveyor (2); the two non-powered belt conveyors (4) and the belt conveyor (2) form a warehouse for accommodating materials.

2. The belt conveyor capable of caching materials according to claim 1, characterized in that: The belt conveyor (2) comprises a driving roller (5) rotatably mounted at the left end of a frame (1), a driven roller (6) rotatably mounted at the right end of the frame (1), a horizontal conveyor belt (7) wound around the driving roller (5) and the driven roller (6), a plurality of upper rollers (8) rotatably mounted on the frame (1) and used to support the upper belt surface of the horizontal conveyor belt (7), a plurality of lower rollers (9) rotatably mounted on the frame (1) and used to support the lower belt surface of the horizontal conveyor belt (7), a first redirecting roller (10) rotatably mounted at the left end of the frame (1) and frictionally engaged with the lower belt surface of the horizontal conveyor belt (7), a second redirecting roller (11) rotatably mounted at the right end of the frame (1) and frictionally engaged with the lower belt surface of the horizontal conveyor belt (7), a cleaning mechanism (12) arranged at the left end of the frame (1) and used to clean the belt surface of the horizontal conveyor belt (7), and a driving device (13) for driving the driving roller (5).

3. The belt conveyor capable of caching materials according to claim 2, characterized in that: The driving device (13) comprises a driving frame (14) fixedly connected to the left end of the frame (1), a motor (15) fixedly connected to the driving frame (14), and a reducer (17) whose input end is drivingly connected to the output end of the motor (15) via a high-speed coupling (16); the output end of the reducer (17) is drivingly connected to the transmission roller (5) via a low-speed coupling (18).

4. The belt conveyor capable of caching materials according to any one of claims 1 to 3, characterized in that: The unpowered belt conveyor (4) comprises a plurality of unpowered rollers (19) rotatably mounted on a frame (1) in a vertical direction, and an unpowered conveyor belt (20) wound around and engaged with the unpowered rollers (19); the inner side of the unpowered conveyor belt (20) is located at the upper end of the conveyor belt surface of the belt conveyor (2).

5. The belt conveyor capable of caching materials according to claim 4, characterized in that: A closed guide rail (29) is fixedly connected to the frame (1) at a position above the non-powered conveyor belt (20), and the shape enclosed by the guide rail (29) is consistent with the shape enclosed by the non-powered conveyor belt (20); a plurality of hangers (30) are fixedly connected to the upper edge of the non-powered conveyor belt (20) at intervals, and the hangers (30) are guided and matched with the guide rail (29).

6. The belt conveyor capable of caching materials according to claim 4, characterized in that: The unpowered roller (19) comprises a rotating shaft (21) rotatably connected to the frame (1), a cylinder (22) fixedly connected to the rotating shaft (21), and a guide wheel (23) rotatably arranged on the rotating shaft (21) and located below the cylinder (22); the diameter of the guide wheel (23) is smaller than the diameter of the cylinder (22), and the side wall of the guide wheel (23) contacts the upper belt surface of the horizontal conveyor belt (7).

7. The belt conveyor capable of caching materials according to claim 4, characterized in that: The unpowered rollers (19) and the upper rollers (8) are arranged alternately.

8. The belt conveyor capable of caching materials according to any one of claims 1 to 3, characterized in that: A closable silo door (24) is provided at the left end of the frame (1).

9. The belt conveyor capable of caching materials according to claim 2 or 3, characterized in that: The upper roller (8) is divided into two sections, and a support seat (25) for supporting the end of the upper roller (8) is provided on the frame (1).

10. The belt conveyor capable of caching materials according to any one of claims 1 to 3, characterized in that: The frame (1) comprises a head frame (26), a main frame (27) located on the right side of the head frame (26), and a tail frame (28) located on the right side of the main frame (27).

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