Belt conveyor buffer device and manufacturing method thereof

Abstract

The present invention discloses a belt conveyor buffer device and a method for manufacturing the same. The device comprises a buffer bed (B) and a polymer roller bottom roller assembly. Five polymer roller bottom roller assemblies are provided, each mounted on the front and rear ends of the buffer bed (B) and in the gap between the middle bottom plate. The ends of the buffer bed (B) are fixedly connected to the belt conveyor support via connecting bolts (B). A buffer spring (B) is provided in the middle of the belt conveyor support to mitigate material impact. By providing an adjustable polymer roller bottom roller assembly in conjunction with the buffer bed (B), the present invention not only meets the buffering requirements during normal production but also reduces the loss of frictional kinetic energy. In particular, in the event of a belt stall or heavy-load startup failure, an adjustment screw is used to raise the polymer roller bottom roller assembly, changing the friction between the belt and the support surface, significantly reducing friction and ensuring safe heavy-load operation. The overall structural design is safe, reliable, simple, and effective.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy-duty belt conveyors for mine transportation, and in particular to a belt conveyor buffer device and a manufacturing method thereof. Background Art

[0002] In mining transportation, belt conveyors are widely used to transport ore, waste rock, etc. During the conveyor transfer process, in order to reduce the impact of the material on the conveyor belt, a buffer device is installed at the landing point of the material.

[0003] At present, the buffer devices commonly used in belt conveyors are mostly buffer roller groups 3 or buffer beds A4, such as Figure 1 、 Figure 2 As shown in the figure, the buffer roller group 3 is set between the belt conveyor tail section 1 and the belt conveyor head section 2. The buffer roller group 3 has weak impact absorption and poor buffering capacity. Under gravity impact, the rollers may fall out of the groove, causing accidents. The large spacing between them makes the sealing effect poor under heavy load, which easily causes material and dust leakage.

[0004] The existing conventional impact bed A4 can effectively avoid such shortcomings, such as Figure 3-5 As shown, a conventional buffer bed A4 includes buffer bars A501, a buffer bed base A502, reinforcing ribs A503, a bottom beam A504, buffer springs A505, connecting bolts A506, and locking bolts A507. However, existing buffer beds A4 and the belt are in full contact, resulting in significant kinetic energy loss and belt wear caused by sliding friction. Furthermore, many buffer bars A501 on either side of the buffer bed A4 are arranged longitudinally, which often causes the belt to become stuck in the gaps between the buffer bars A501 when the belt deviates, causing wear and tear on the belt edges. In production systems with large fluctuations in instantaneous feed rates, excessive feed rates can cause the belt to stop, or after a heavy-load shutdown due to excessive material accumulation in the hopper, the belt can become stuck between the buffer bars A501. In these cases, due to the large contact surface between the belt and the buffer bars A501 and the heavy material weight, the conveyor cannot start under heavy load or may even slip when starting. Manual material removal is necessary before restarting, which is not only labor-intensive but also poses a safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide a belt conveyor buffer device and a manufacturing method thereof. By setting an adjustable polymer material buffer bottom roller, it not only meets the buffering requirements during normal production, but also reduces the loss of frictional kinetic energy; especially in the case that the belt is pressed and stopped or cannot be started with a heavy load, the bottom roller group is adjusted and raised by adjusting screws to change the friction form between the belt and the supporting surface, greatly reducing the friction force, ensuring the safety of heavy loads, avoiding manual material cleaning, eliminating safety hazards, and solving the problems of poor buffering capacity, easy jamming during deviation, large friction resistance, and difficulty in starting with heavy loads caused by the deficiencies of the existing belt conveyor buffer device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A belt conveyor buffer device includes a buffer bed B and a polymer roller bottom roller group; the polymer roller bottom roller group is provided with five groups in total, each group of polymer roller bottom roller groups is respectively installed at the front and rear ends and the middle bottom plate gap of the buffer bed B, the two ends of the buffer bed B are fixedly connected to the belt conveyor bracket by connecting bolts B, and a buffer spring B is added in the middle of the belt conveyor bracket to reduce the impact of materials.

[0008] Furthermore, the buffer bed B includes a buffer strip B, a buffer bed bottom plate B, a reinforcing rib B, a bottom beam B, a buffer spring B, a connecting bolt B and a locking bolt B; the buffer strip B is connected to the buffer bed bottom plate B through the locking bolt B; the buffer bed bottom plate B and the bottom beam B are connected through the reinforcing rib B; and the two ends of the bottom beam B are fixedly connected to the belt conveyor bracket through the connecting bolts B.

[0009] Furthermore, the polymer roller type bottom roller group includes a polymer bottom roller, a bottom roller ear frame, a base, a roller shaft, a locking nut, a connecting bolt hole B and an H-shaped bottom beam; the polymer bottom rollers are respectively installed in the bottom roller ear frames of the base and are connected in series through the roller shafts, and are locked by locking nuts at both ends of the roller shaft, and the assembled base is placed in the middle of the H-shaped bottom beam, and the two ends of the base are connected to the H-shaped bottom beam by inserting bolts into the connecting bolt holes B to assemble into a polymer roller type bottom roller group.

[0010] Furthermore, the upper end surface of the H-shaped bottom beam is provided with a connecting bolt hole C, which is connected to the connecting bolt hole B; the lower end surface of the H-shaped bottom beam is provided with a connecting bolt hole D and an adjustment screw hole; the polymer roller-type bottom roller group is installed on the belt conveyor bracket by passing bolts through the connecting bolt hole D at the bottom of the H-shaped bottom beam.

[0011] The present invention provides another technical solution: a method for manufacturing a belt conveyor buffer device, comprising the following steps:

[0012] S1: Make the buffer bed B: Connect the buffer strip B to the buffer bed base plate B with the locking bolts B; connect the buffer bed base plate B to the bottom beam B with the reinforcing ribs B; fix the ends of the bottom beam B to the belt conveyor bracket with connecting bolts B, and add a buffer spring B in the middle of the belt conveyor bracket to mitigate material impact;

[0013] S2: Make a polymer roller bottom roller assembly: Install the polymer bottom rollers in the bottom roller ears of the base, connect them in series through the roller shafts, lock the two ends of the roller shafts with locking nuts, and place the assembled base in the middle of the H-shaped bottom beam. Put bolts into the connecting bolt holes B at both ends of the base to connect to the H-shaped bottom beam to assemble the polymer roller bottom roller assembly;

[0014] S3: Take five sets of polymer roller bottom roller groups prepared in S2 for standby use. Each set of polymer roller bottom roller groups is installed at the front and rear ends and the middle bottom plate gap of the buffer bed B prepared in S1 respectively. The polymer roller bottom roller groups are inserted into the connecting bolt holes D at the bottom of the H-shaped bottom beam through bolts, and the polymer roller bottom roller groups are installed on the belt conveyor bracket.

[0015] Furthermore, during normal operation, a gap e1 is left between the buffer strip B and the belt on the belt conveyor support, and the upper quadrant point of the polymer bottom roller is lower than the upper surface of the buffer strip B by a height e2.

[0016] Furthermore, when the belt is pressed and cannot be started normally, remove the bolts between the H-shaped bottom beam of the polymer roller bottom roller group and the belt conveyor bracket, and screw the top screw into the adjustment screw holes at both ends of the H-shaped bottom beam. Raise the five polymer roller bottom roller groups until the upper quadrant point of a single polymer bottom roller is higher than the upper surface height e3 of the buffer strip B, insert a gasket of the same thickness into the gap between the H-shaped bottom beam and the belt conveyor bracket, and then connect the H-shaped bottom beam to the belt conveyor bracket with bolts. After tightening the bolts, start the belt to carry materials. After the accumulated materials on the belt are emptied, restore the polymer roller bottom roller group to its normal installation state.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a belt conveyor buffer device and a manufacturing method thereof. By arranging an adjustable polymer roller-type bottom roller group in conjunction with a buffer bed B, the device not only meets the buffering requirements during normal production, but also reduces the loss of frictional kinetic energy. In particular, in the event that the belt is pressed and stopped or cannot be started under heavy load, the polymer roller-type bottom roller group is adjusted and raised by an adjusting screw to change the friction form between the belt and the supporting surface, greatly reducing the friction force, ensuring safe operation under heavy load, avoiding manual material cleaning, eliminating safety hazards, and scientifically and rationally solving the problems of poor buffering capacity, easy jamming during deviation, large friction resistance, and difficulty in starting under heavy load caused by insufficient buffer devices of belt conveyors. The overall structural design is safe, reliable, simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a belt conveyor using a conventional buffer roller group;

[0020] Figure 2 This is a schematic diagram of a conventional impact bed belt conveyor;

[0021] Figure 3 This is a schematic diagram of a conventional impact bed;

[0022] Figure 4 for Figure 3 Side view of

[0023] Figure 5 for Figure 3 A top view of

[0024] Figure 6 Schematic diagram of a buffer device for a heavy-duty belt conveyor according to the present invention;

[0025] Figure 7 For the present invention Figure 6 Side view of

[0026] Figure 8 For the present invention Figure 6 A top view of

[0027] Figure 9 This is a schematic diagram of the polymer roller bottom roller assembly of the present invention;

[0028] Figure 10 For the present invention Figure 9 Side view of

[0029] Figure 11 This is a front view of the polymer roller type bottom roller assembly of the present invention;

[0030] Figure 12 For the present invention Figure 11 Side view of

[0031] Figure 13 This is a plan view of the H-shaped bottom beam of the present invention;

[0032] Figure 14 It is a side sectional view of the H-shaped bottom beam of the present invention;

[0033] Figure 15 This is a schematic diagram of the normal operation and installation of the buffer device of the present invention;

[0034] Figure 16 This is a schematic diagram of the installation of the buffer device of the present invention for handling the belt pressure stop state.

[0035] Figure: 1. Conveyor belt tail section; 2. Conveyor belt head section; 3. Buffer roller assembly; 4. Buffer bed A; 501. Buffer strip A; 502. Buffer bed bottom plate A; 503. Reinforcement rib A; 504. Bottom beam A; 505. Buffer spring A; 506. Connecting bolt A; 507. Locking bolt A; 601. Buffer strip B; 602. Buffer bed bottom plate B; 603. Reinforcement rib B; 604. Bottom beam B; 605 , buffer spring B; 606, connecting bolt B; 607, locking bolt B; 7, polymer roller bottom roller group; 701, polymer bottom roller; 702, bottom roller ear frame; 703, base; 704, roller shaft; 705, locking nut; 706, connecting bolt hole B; 72, H-shaped bottom beam; 721, connecting bolt hole C; 722, connecting bolt hole D; 723, adjustment screw hole; 8, belt conveyor bracket; 9, belt. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 6-16In an embodiment of the present invention, a belt conveyor buffer device is provided, including a buffer bed B and a polymer roller bottom roller group 7; there are five groups of polymer roller bottom roller groups 7, each group of polymer roller bottom roller groups 7 is respectively installed at the front and rear ends and the middle bottom plate gap of the buffer bed B, and the two ends of the buffer bed B are fixedly connected to the belt conveyor bracket 8 by connecting bolts B606. A buffer spring B605 is added in the middle of the belt conveyor bracket 8 to reduce the impact of materials. Among them, the buffer bed B includes a buffer strip B601, a buffer bed bottom plate B602, a reinforcing rib B603, a bottom beam B604, a buffer spring B605, a connecting bolt B606 and a locking bolt B607; the buffer strip B601 is connected to the buffer bed bottom plate B602 through a locking bolt B607; the buffer bed bottom plate B602 and the bottom beam B604 are connected through a reinforcing rib B603; the two ends of the bottom beam B604 are fixedly connected to the belt conveyor bracket 8 through connecting bolts B606; the polymer roller bottom roller group 7 includes a polymer bottom roller 701, a bottom roller ear frame 702, a base 703, a roller shaft 704, a locking nut 705, a connecting bolt hole B706 and an H-shaped bottom beam 72; the polymer bottom roller 701 is divided into The bottom roller ear frame 702 is separately installed in the base 703 and is connected in series through the roller shaft 704. The two ends of the roller shaft 704 are locked by locking nuts 705, and the assembled base 703 is placed in the middle of the H-shaped bottom beam 72. The two ends of the base 703 are connected to the H-shaped bottom beam 72 by inserting bolts into the connecting bolt holes B706 to assemble into a polymer roller type bottom roller group 7; the upper end surface of the H-shaped bottom beam 72 is provided with a connecting bolt hole C721, and the connecting bolt hole C721 is connected to the connecting bolt hole B706; the lower end surface of the H-shaped bottom beam 72 is provided with a connecting bolt hole D722 and an adjustment screw hole 723; the polymer roller type bottom roller group 7 is installed on the belt conveyor bracket 8 by passing bolts through the connecting bolt hole D722 at the bottom of the H-shaped bottom beam 72.

[0038] The working principle of the embodiment of the present invention is as follows: when the entire buffer device is working normally, there is a gap e1 (about 20mm) between the buffer bar B601 and the belt 9 on the belt conveyor bracket 8, and the upper quadrant point of the polymer bottom roller 701 is lower than the upper surface of the buffer bar B601 by a height of e2 (about 20-25mm); when the belt 9 is pressed and stopped and cannot be started normally, the bolts between the H-shaped bottom beam 72 of the polymer roller bottom roller group 7 and the belt conveyor bracket 8 are removed, and the two ends of the H-shaped bottom beam 72 are screwed in with a top screw. After the five polymer roller bottom roller groups 7 are raised to the upper quadrant point of a single polymer bottom roller 701 above the upper surface height e3 of the buffer bar B601, a gasket of the same thickness is inserted into the gap between the H-shaped bottom beam 72 and the belt conveyor bracket 8, and then the H-shaped bottom beam 72 and the belt conveyor bracket 8 are connected with bolts. After tightening the bolts, the belt 9 can be started to carry the material. After the accumulated material in the belt 9 is emptied, the polymer roller bottom roller group 7 can be restored to the normal installation state.

[0039] In order to further better explain the embodiments of the present invention, a method for manufacturing a belt conveyor buffer device is also provided, comprising the following steps:

[0040] Step 1: Make the buffer bed B: Connect the buffer bar B601 to the buffer bed base B602 with locking bolts B607; connect the buffer bed base B602 to the bottom beam B604 with reinforcing ribs B603; fix the ends of the bottom beam B604 to the belt conveyor bracket 8 with connecting bolts B606, and add a buffer spring B605 in the middle of the belt conveyor bracket 8 to mitigate material impact;

[0041] Step 2: Make the polymer roller bottom roller assembly 7: Install the polymer bottom rollers 701 in the bottom roller ears 702 of the base 703, connect them in series through the roller shaft 704, lock the roller shaft 704 with locking nuts 705 at both ends, and place the assembled base 703 in the middle of the H-shaped bottom beam 72. Insert bolts into the connecting bolt holes B706 at both ends of the base 703 to connect it to the H-shaped bottom beam 72 to assemble the polymer roller bottom roller assembly 7;

[0042] Step 3: Take five sets of the polymer roller bottom roller groups 7 prepared in step 2 for standby use. Each set of polymer roller bottom roller groups 7 is respectively installed at the front and rear ends and the middle bottom plate gap of the buffer bed B prepared in step 1, and the polymer roller bottom roller group 7 is inserted into the connecting bolt hole D722 at the bottom of the H-shaped bottom beam 72 through bolts, and the polymer roller bottom roller group 7 is installed on the belt conveyor bracket 8.

[0043] In summary: The present invention provides a belt conveyor buffer device and a manufacturing method thereof, which not only meets the buffering requirements during normal production but also reduces the loss of frictional kinetic energy by setting an adjustable polymer roller bottom roller group 7 in conjunction with a buffer bed B; especially in the case that the belt 9 is pressed and stopped and cannot be started under heavy load, the adjustment screw is used to adjust and raise the polymer roller bottom roller group 7, so as to change the friction form between the belt 9 and the supporting surface, greatly reduce the friction force, ensure the safe operation of heavy load, avoid manual cleaning, eliminate safety hazards, and scientifically and rationally solve the problems of poor buffering capacity, easy jamming during deviation, large friction resistance, and difficulty in starting under heavy load caused by insufficient belt conveyor buffer device; its overall structural design is safe, reliable, simple and effective.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A belt conveyor buffer device, comprising a buffer bed B and a polymer roller type bottom roller group (7); characterized in that, There are five polymer roller bottom roller groups (7) in total. Each polymer roller bottom roller group (7) is respectively installed at the front and rear ends and the gap in the middle bottom plate of the buffer bed B. The two ends of the buffer bed B are fixedly connected to the belt conveyor bracket (8) by connecting bolts B (606). A buffer spring B (605) is added in the middle of the belt conveyor bracket (8) to reduce the impact of the material. The preparation method thereof comprises the following steps: S1: Making a buffer bed B: Connecting the buffer bar B (601) to the buffer bed bottom plate B (602) via locking bolts B (607); connecting the buffer bed bottom plate B (602) to the bottom beam B (604) via reinforcing ribs B (603); fixing both ends of the bottom beam B (604) to the belt conveyor bracket (8) via connecting bolts B (606), and adding a buffer spring B (605) in the middle of the belt conveyor bracket (8) for mitigating material impact; S2: Making a polymer roller type bottom roller assembly (7): installing the polymer bottom rollers (701) in the bottom roller ears (702) of the base (703) respectively, and connecting them in series through the roller shaft (704), locking the roller shaft (704) at both ends with locking nuts (705), and placing the assembled base (703) in the middle of the H-shaped bottom beam (72), and connecting the two ends of the base (703) with the H-shaped bottom beam (72) by inserting bolts into the connecting bolt holes B (706) to assemble the polymer roller type bottom roller assembly (7); S3: Take five sets of the polymer roller bottom roller assemblies (7) prepared in S2 for standby use, and install each set of polymer roller bottom roller assemblies (7) at the front and rear ends and the gap in the middle bottom plate of the buffer bed B prepared in S1, and insert the polymer roller bottom roller assemblies (7) into the connecting bolt holes D (722) at the bottom of the H-shaped bottom beam (72) through bolts, and install the polymer roller bottom roller assemblies (7) on the belt conveyor bracket (8); During normal operation, a gap e1 is left between the buffer bar B (601) and the belt (9) on the belt conveyor support (8), and the upper quadrant point of the polymer bottom roller (701) is lower than the upper surface of the buffer bar B (601) by a height of e2.

2. A belt conveyor buffer device according to claim 1, characterized in that: The buffer bed B comprises a buffer strip B (601), a buffer bed bottom plate B (602), a reinforcing rib B (603), a bottom beam B (604), a buffer spring B (605), a connecting bolt B (606) and a locking bolt B (607); the buffer strip B (601) is connected to the buffer bed bottom plate B (602) via the locking bolt B (607); the buffer bed bottom plate B (602) and the bottom beam B (604) are connected via the reinforcing rib B (603); and both ends of the bottom beam B (604) are fixedly connected to the belt conveyor bracket (8) via the connecting bolts B (606).

3. A belt conveyor buffer device according to claim 2, characterized in that: The polymer roller type bottom roller assembly (7) comprises a polymer bottom roller (701), a bottom roller ear frame (702), a base (703), a roller shaft (704), a locking nut (705), a connecting bolt hole B (706) and an H-shaped bottom beam (72); the polymer bottom roller (701) is respectively installed in the bottom roller ear frame (702) of the base (703) and connected in series through the roller shaft (704), and the two ends of the roller shaft (704) are locked by locking nuts (705), and the assembled base (703) is placed in the middle of the H-shaped bottom beam (72), and bolts are placed in the connecting bolt holes B (706) at both ends of the base (703) to connect with the H-shaped bottom beam (72) to assemble into the polymer roller type bottom roller assembly (7).

4. A belt conveyor buffer device according to claim 3, characterized in that: The upper end surface of the H-shaped bottom beam (72) is provided with a connecting bolt hole C (721), which is butted against the connecting bolt hole B (706); the lower end surface of the H-shaped bottom beam (72) is provided with a connecting bolt hole D (722) and an adjustment screw hole (723); the polymer roller type bottom roller assembly (7) is installed on the belt conveyor bracket (8) by passing bolts through the connecting bolt hole D (722) at the bottom of the H-shaped bottom beam (72).

5. A belt conveyor buffer device according to claim 1, characterized in that: When the belt (9) is pressed and stopped and cannot be started normally, the bolts between the H-shaped bottom beam (72) of the polymer roller bottom roller group (7) and the belt conveyor bracket (8) are removed, and the top screw is screwed into the adjustment screw hole (723) at both ends of the H-shaped bottom beam (72). After the five polymer roller bottom roller groups (7) are raised to the upper quadrant point of the single polymer bottom roller (701) is higher than the upper surface height e3 of the buffer strip B (601), a gasket of the same thickness is inserted into the gap between the H-shaped bottom beam (72) and the belt conveyor bracket (8), and then the H-shaped bottom beam (72) is connected to the belt conveyor bracket (8) with bolts. After tightening the bolts, the belt (9) can be started to carry the material. After the accumulated material of the belt (9) is emptied, the polymer roller bottom roller group (7) can be restored to the normal installation state.

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