Vertical tensioning structure of long-distance belt conveyor

Abstract

The invention provides a long-distance belt conveyor vertical tensioning structure which comprises a belt drooping section, a first turning roller and a second turning roller which can rotate are arranged at the upper end of the belt drooping section and are arranged at intervals, a heavy drooping device is arranged at the lower end of the belt drooping section, and a first guide roller and a second guide roller which can rotate are arranged on the heavy drooping device. The first guide roller and the second guide roller are arranged in a spaced mode, a transmission line belt bypasses the first turning roller and the second turning roller from the upper portion and bypasses the first guide roller and the second guide roller from the lower portion, the vertical frame is further arranged, the weight device can vertically slide along the vertical frame, and the belt tensioning problem of the long-distance belt conveyor is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of belt conveyor tensioning, in particular to a vertical tensioning structure of long-distance belt conveyor. BACKGROUND

[0002] The belt conveyor is the main equipment for modern bulk material transportation, which is widely used in metallurgy, mining, coal, port, chemical industry, water conservancy, power and many other industries. The tensioning device, as an important component of the belt conveyor, its reliable work is the necessary condition for the normal operation of the belt conveyor. With the wide application of large bandwidth, large capacity, high efficiency and energy saving, the use requirements of the belt conveyor tensioning device are becoming higher and higher.

[0003] The belt conveyor needs to adopt a tensioning structure to prevent the belt from slipping. Since the total length of the belt is relatively long, up to thousands of meters, the length change caused by thermal expansion and contraction is relatively obvious. In order to adapt to the length change, the common method is to use a heavy drop device to tension the belt, and to use the gravity of the heavy drop to keep the belt tension constant. However, since the heavy drop is freely hung, it may swing with the wind or external objects, which may cause tension fluctuation or damage to other components. SUMMARY

[0004] The present application provides a vertical tensioning structure of long-distance belt conveyor, which solves the problem of belt tensioning of long-distance belt conveyor.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a vertical tensioning structure of long-distance belt conveyor, comprising a belt sagging section, a first rotating roller and a second rotating roller are arranged on the upper end of the belt sagging section and can rotate, the first rotating roller and the second rotating roller are arranged at intervals, a heavy drop device is arranged at the lower end of the belt sagging section, a first guide roller and a second guide roller are arranged on the heavy drop device and can rotate, the first guide roller and the second guide roller are arranged at intervals, a transmission line belt passes over the first rotating roller and the second rotating roller from above, and passes under the first guide roller and the second guide roller, a vertical stand is further provided, and the heavy drop device can slide vertically along the vertical stand.

[0006] In the preferred scheme, a connecting shaft that can move up and down is further provided, the connecting shaft is provided with a first articulated rod and a second articulated rod at both ends and articulated, one end of the first articulated rod is articulated with the first guide roller, one end of the second articulated rod is articulated with the second guide roller, a transverse guide rail is arranged on the heavy drop device, and the first guide roller and the second guide roller can independently move along the transverse guide rail.

[0007] In the preferred scheme, the heavy drop device comprises a base, the base is provided with a pulling frame that can move up and down, and the pulling frame is connected with the connecting shaft at the upper end.

[0008] In the preferred scheme, the base is provided with a notch part, and the two ends of the inner side of the notch part are respectively provided with a cross frame, the cross frame is provided with a transverse guide rail, the first guide roller and the second guide roller are respectively provided with a middle shaft, the two ends of the middle shaft are rotatably connected with the first hinge rod and the second hinge rod, and the two ends of the middle shaft are respectively provided with a clamping sliding block which is slidably connected with the transverse guide rail.

[0009] In the preferred scheme, the base is provided with an inner groove part, the inner wall of the inner groove part is provided with a rotatable screw rod assembly, the lower end of the pulling frame is provided with a nut which is threadedly connected with the screw rod assembly, and the screw rod assembly is rotated to move the pulling frame up and down.

[0010] In the preferred scheme, the two ends of the pulling frame are respectively provided with a screw rod assembly, the inner groove part is further provided with a transmission shaft, the two ends of the transmission shaft are connected with the screw rod assemblies through bevel gear transmissions, one end of the transmission shaft is provided with a large gear, and the inner groove part is further provided with a driving motor, the shaft end of the driving motor is provided with a small gear which is engaged with the large gear.

[0011] In the preferred scheme, the lower end of the base is provided with a counterweight device, and the counterweight device comprises a counterweight mounting seat plate, and the lower end of the counterweight mounting seat plate is provided with a plurality of counterweight blocks.

[0012] In the preferred scheme, the lower end of the counterweight mounting seat plate is provided with a plurality of T-shaped grooves which are arranged in parallel and at intervals, the upper end of the counterweight block is provided with a T-shaped hanging part, and the T-shaped hanging part is slidably clamped with the T-shaped groove.

[0013] In the preferred scheme, the lower end of the counterweight mounting seat plate is provided with a partition plate, and the partition plate is perpendicular to the length direction of the T-shaped groove.

[0014] In the preferred scheme, the two ends of each T-shaped groove are respectively provided with two L-shaped blocks, the counterweight mounting seat plate is provided with a lower stop block below the L-shaped block, the two L-shaped blocks are oppositely arranged to form a slot structure in the middle part, the slot structure is provided with a sliding insertion plate which is slidably inserted, and the lower end of the sliding insertion plate is stopped on the lower stop block.

[0015] The beneficial effects of the present application are as follows: the counterweight device is connected to the stand mounted on the ground through the guide rail sliding block device to limit the swing of the counterweight device and prevent it from being damaged or causing safety risks; the base of the counterweight device is welded with a cross frame to weld the transverse guide rail, two rollers are connected on the transverse guide rail, and the come-along linkage mechanism can expand and transversely tension the belt, thereby saving the vertical space and avoiding the situation that the installation height is not enough to cause the counterweight to touch the bottom without tensioning the belt; the counterweight block adopts a sliding clamping structure, the number and distribution of the counterweight blocks can be freely adjusted, the tensioning force can be easily adjusted, and the counterweight bias can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and examples.

[0017] Figure 1 It is a schematic view of a traditional counterweight type tensioning mechanism.

[0018] Figure 2 is a schematic diagram of the anti-swing structure of the heavy vertical tensioning mechanism.

[0019] Figure 3 is a heavy vertical tensioning mechanism with a transverse expansion mechanism according to the present application.

[0020] Figure 4 is a schematic diagram of the pit heavy vertical tensioning mechanism.

[0021] Figure 5 is a schematic diagram of the linkage transverse expansion mechanism according to the present application.

[0022] Figure 6 is a structure diagram of the heavy vertical device installed on the ground through the stand.

[0023] Figure 7 is a structure diagram of the heavy vertical device.

[0024] Figure 8 is a structure diagram of the base of the heavy vertical device.

[0025] Figure 9 is a sectional view of the present application.

[0026] Figure 10 is a structure diagram of the pull frame.

[0027] Figure 11 is a distribution diagram of the lower end counterweight.

[0028] Figure 12 is a structure diagram of the counterweight mounting seat plate.

[0029] Figure 13 is a structure diagram of the counterweight block clamping.

[0030] In the figure: heavy vertical device 1; base 101; notch part 102; inner groove part 103; pull frame 104; cross frame 105; screw rod assembly 106; transmission shaft 107; bevel gear transmission set 108; large gear 109; drive motor 110; small gear 111; transverse guide rail 2; first hinged rod 3; second hinged rod 4; connecting shaft 5; stand 6; guide rail slider device 601; counterweight device 7; counterweight mounting seat plate 701; T-shaped groove 702; partition plate 703; L-shaped block 704; lower stop block 705; sliding insertion plate 706; counterweight block 8; T-shaped hanging part 801; pit 9; transmission line belt 10; first deflection roller 1001; second deflection roller 1002; belt sagging section 11; first guide roller 1101; second guide roller 1102; middle shaft 1103; clamping sliding block 1104. DETAILED DESCRIPTION

[0031] As Figures 1-13The application discloses a vertical tensioning structure of a long-distance belt conveyor, which comprises a belt sagging section 11, a first self-rotating turning roller 1001 and a second self-rotating turning roller 1002 arranged at the upper end of the belt sagging section 11, the first self-rotating turning roller 1001 and the second self-rotating turning roller 1002 being spaced apart, a heavy sagging device 1 arranged at the lower end of the belt sagging section 11, a first self-rotating guide roller 1101 and a second self-rotating guide roller 1102 arranged at the heavy sagging device 1, the first self-rotating guide roller 1101 and the second self-rotating guide roller 1102 being spaced apart, a transmission line belt 10 winding around the first self-rotating turning roller 1001 and the second self-rotating turning roller 1002 from above and winding around the first self-rotating guide roller 1101 and the second self-rotating guide roller 1102 from below, and a vertical stand 6, wherein the heavy sagging device 1 is vertically slidable along the vertical stand 6.

[0032] The long-distance belt conveyor is provided with fixed rotatable rollers, i.e. the first self-rotating turning roller 1001 and the second self-rotating turning roller 1002, arranged at the middle part or close to the end part of the long-distance belt conveyor, the first self-rotating turning roller 1001 and the second self-rotating turning roller 1002 being connected with the first self-rotating guide roller 1101 and the second self-rotating guide roller 1102 through the belt sagging section 11, the heavy sagging device 1 being pulled, the dead weight of the heavy sagging device 1 forming a fixed pulling force on the transmission line belt 10, so as to tension the transmission line belt 10 and keep the constant tension, when the belt expands or shrinks with the change of temperature, the belt sagging section 11 and the heavy sagging device 1 descending or ascending together, so as to keep the tension of the transmission line belt 10 self-adapting.

[0033] The heavy sagging device 1 is slidably connected with the vertical stand 6 through a guide rail sliding block device 601, so that the heavy sagging device 1 can only move up and down, which can meet the requirement of the expansion and shrink of the transmission line belt 10 and will not make the heavy sagging device 1 swing freely.

[0034] Since the height of the belt from the ground is limited, and the heavy sagging is not easy to be suspended too high, with the aging of the belt, the length is gradually elongated, in order to keep the tension, the heavy sagging gradually descends and gradually approaches the ground, and the remaining distance from the heavy sagging to the ground is not enough to meet the length change of the belt caused by the expansion and shrink.

[0035] One of the solutions is to dig a pit 9 on the ground, but the premise is that there is no other installation component on the ground and no other underground line pipe and buried objects, so the solution is only suitable for a few cases.

[0036] In the preferred solution, a movable connecting shaft 5 is further arranged, the connecting shaft 5 is provided with a first hinged rod 3 and a second hinged rod 4 hinged at both ends, one end of the first hinged rod 3 is hinged with the first self-rotating guide roller 1101, one end of the second hinged rod 4 is hinged with the second self-rotating guide roller 1102, the heavy sagging device 1 is provided with a transverse guide rail 2, and the first self-rotating guide roller 1101 and the second self-rotating guide roller 1102 can independently move along the transverse guide rail 2.

[0037] At the beginning, the first guide roller 1101 and the second guide roller 1102 are in the closed state. When the belt is elongated due to long-term use, the connecting shaft 5 is lowered relative to the vertical device 1, the first guide roller 1101 and the second guide roller 1102 are moved away from the two ends along the transverse guide rail 2, and the lower end of the belt sagging section 11 is stretched to restore the tension state.

[0038] The first guide roller 1101 and the second guide roller 1102 are used to drive the belt to be tensioned, which does not occupy vertical space, and the vertical device 1 does not need to be suspended too high, so it can adapt to more installation scenarios.

[0039] In the preferred embodiment, the vertical device 1 includes a base 101, the base 101 is provided with a movable pulling frame 104, and the upper end of the pulling frame 104 is connected to the connecting shaft 5.

[0040] In the preferred embodiment, the base 101 is provided with a notch portion 102, the inner sides of the two ends of the notch portion 102 are each provided with a cross frame 105, the transverse guide rail 2 is arranged on the cross frame 105, the first guide roller 1101 and the second guide roller 1102 are each provided with a middle shaft 1103, the two ends of the middle shaft 1103 are rotatably sleeved with the first hinge rod 3 and the second hinge rod 4, and the two ends of the middle shaft 1103 are each provided with a clamping sliding block 1104 which is slidably connected with the transverse guide rail 2.

[0041] The main function of the notch portion 102 is to form a space for avoiding interference with the first hinge rod 3, the second hinge rod 4, the first guide roller 1101 and the second guide roller 1102 which are stretched.

[0042] In the preferred embodiment, the base 101 is provided with an inner groove portion 103, the inner wall of the inner groove portion 103 is provided with a rotatable lead screw assembly 106, the lower end of the pulling frame 104 is provided with a nut which is threadedly sleeved with the lead screw assembly 106, and the lead screw assembly 106 is rotated to move the pulling frame 104 up and down.

[0043] When the pulling frame 104 is lowered, since the first guide roller 1101 and the second guide roller 1102 are clamped on the transverse guide rail 2 through the clamping sliding block 1104, and the transverse guide rail 2 is fixed on the base 101, the pulling frame 104 can only pull the connecting shaft 5 at the upper end to be lowered, the first hinge rod 3 and the second hinge rod 4 are gradually swung from being close to the vertical direction to being close to the transverse direction, and the middle shaft 1103 of the first guide roller 1101 and the second guide roller 1102 is stretched to tighten the transmission line belt 10.

[0044] In the preferred embodiment, the pulling frame 104 is provided with a lead screw assembly 106 at each end, the inner groove portion 103 is further provided with a transmission shaft 107, the transmission shaft 107 is in transmission with each lead screw assembly 106 through a bevel gear transmission set 108 at both ends, one end of the transmission shaft 107 is sleeved with a large gear 109, the inner groove portion 103 is further provided with a driving motor 110, the shaft end of the driving motor 110 is provided with a small gear 111 which is engaged with the large gear 109.

[0045] The two ends of the lead screw assembly 106 are connected to the inner wall of the inner groove 103 via end seats.

[0046] A drive motor 110 synchronously controls the rotation of the lead screw assemblies 106 at both ends, so that the two ends of the pulling frame 104 move synchronously, avoiding misalignment and jamming caused by asynchronous movement.

[0047] In a preferred embodiment, a counterweight device 7 is provided at the lower end of the base 101. The counterweight device 7 includes a counterweight mounting plate 701, and a plurality of counterweight blocks 8 are provided at the lower end of the counterweight mounting plate 701.

[0048] In the preferred embodiment, the lower end of the counterweight mounting plate 701 is provided with a plurality of parallel T-slots 702, and the upper end of the counterweight block 8 is provided with a T-shaped hook part 801, which is slidably engaged with the T-slots 702.

[0049] In the preferred embodiment, a partition plate 703 is provided at the lower middle part of the counterweight mounting base plate 701, and the partition plate 703 is perpendicular to the length direction of the T-slot 702.

[0050] The adjacent T-slots 702 are spaced equally. A partition plate 703 is welded at the center line of the counterweight mounting plate 701. Only an equal number of counterweight blocks 8 can be installed in the T-slots 702 on both sides of the partition plate 703 to ensure that the counterweight blocks 8 hanging below the counterweight mounting plate 701 are evenly distributed and to avoid weight concentration that could lead to unbalanced load.

[0051] In the preferred embodiment, each T-slot 702 has two L-shaped blocks 704 at both ends. The counterweight mounting plate 701 has a lower stop block 705 below the L-shaped blocks 704. The two L-shaped blocks 704 are arranged opposite each other so that the middle part forms a slot structure. The slot structure has a sliding plate 706 that can be slidably inserted. The lower end of the sliding plate 706 stops on the lower stop block 705.

[0052] The sliding plate 706 blocks both ends of the T-slot 702 to prevent the counterweight 8 from gradually slipping off from both ends as the counterweight mounting plate 701 moves.

[0053] The sliding plate 706 is inserted into the slot structure by its own weight. When it is necessary to add or remove the counterweight 8, the sliding plate 706 can be manually slid up to expose the port of the T-slot 702.

[0054] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A long distance belt conveyor vertical tensioning structure, characterized in that: The transmission line belt (10) passes over the first and second turning rollers (1001, 1002) from above and passes under the first and second guide rollers (1101, 1102) from below.

2. The long distance belt conveyor vertical tensioning structure according to claim 1, characterized in that: The first and second guide rollers (1101, 1102) are independently movable along the horizontal guide rail (2).

3. The long distance belt conveyor vertical tensioning structure according to claim 1, characterized in that: The heavy drop device (1) comprises a base (101) provided with a pull frame (104) movable up and down, and the pull frame (104) is connected to the connecting shaft (5) at the upper end.

4. The long distance belt conveyor vertical tensioning structure according to claim 3, characterized in that: The base (101) is provided with a notch portion (102), and the inner sides of the two ends of the notch portion (102) are each provided with a horizontal frame (105), and the horizontal guide rail (2) is arranged on the horizontal frame (105).

5. The long distance belt conveyor vertical tensioning structure according to claim 4, characterized in that: The base (101) is provided with an inner groove portion (103), and the inner wall of the inner groove portion (103) is provided with a rotatable lead screw assembly (106).

6. The long distance belt conveyor vertical tensioning structure according to claim 5, characterized in that: The lower end of the pull frame (104) is provided with a nut and is threadedly connected to the lead screw assembly (106), and the lead screw assembly (106) is rotated to move the pull frame (104) up and down.

7. The long distance belt conveyor vertical tensioning structure according to claim 3, characterized in that: The two ends of the pull frame (104) are each provided with a lead screw assembly (106), and the inner groove portion (103) is further provided with a transmission shaft (107). The lower end of the base (101) is provided with a counterweight device (7), and the counterweight device (7) comprises a counterweight mounting seat plate (701). The lower end of the base (101) is provided with a counterweight device (7), and the counterweight device (7) comprises a counterweight mounting seat plate (701).

8. The long distance belt conveyor vertical tensioning structure according to claim 7, characterized in that: The lower end of the counterweight mounting seat plate (701) is provided with a plurality of parallel and spaced T-shaped grooves (702), and the upper end of the counterweight block (8) is provided with a T-shaped hanging part (801), which is in sliding connection with the T-shaped groove (702).

9. The long distance belt conveyor vertical tensioning structure according to claim 8, characterized in that: The middle part of the lower end of the counterweight mounting seat plate (701) is provided with a partition plate (703) which is perpendicular to the length direction of the T-shaped groove (702).

10. The long distance belt conveyor vertical tensioning structure according to claim 8, characterized in that: The two ends of each T-shaped groove (702) are respectively provided with two L-shaped blocks (704), and the lower end of the counterweight mounting seat plate (701) is provided with a lower stop block (705) below the L-shaped block (704). The two L-shaped blocks (704) are oppositely arranged to form a slot structure in the middle part, and a sliding insertion plate (706) is arranged in the slot structure in a sliding insertion manner, and the lower end of the sliding insertion plate (706) is stopped on the lower stop block (705).

Images