Middle driving and tensioning forward and reverse rotation device of belt conveyor

Abstract

The utility model discloses a belt conveyor middle driving and tensioning forward and reverse rotation device which comprises a transmission rack and a spiral tensioning rack integrally arranged with the transmission rack, and the transmission rack and the spiral tensioning rack are both located in the middle of a whole belt. A transmission drum, a turnabout drum and a surface-increasing turnabout drum are rotationally mounted on the transmission rack, the side part of the transmission drum is directly connected with a power device for the transmission drum to rotate, a spiral tensioning device is arranged on the right side of the turnabout drum, and the spiral tensioning device is mounted on a spiral tensioning rack. The driving device and the spiral tensioning device are integrated in the middle of the conveyor, and an integrated transmission rack and spiral tensioning rack structure is adopted, so that the mounting precision and the bearing capacity are improved; the gear motor directly drives the transmission drum to realize the stable operation of forward and reverse rotation of the belt and the two-end blanking function; the belt conveyor has the advantages of simple structure, convenience in installation, good bearing performance, good belt tensioning performance, stable conveying and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of belt conveyor conveying equipment, specifically to a belt conveyor mid-drive and tensioning forward and reverse rotation device. Background Technology

[0002] Belt conveyors are general-purpose products widely used in industries such as coal, power, metallurgy, chemical, machinery, grain, light industry, ports, and building materials. They consist of single units or multiple units combined into a conveying system, transporting various powdery, granular, and lumpy materials with a bulk density generally less than 2500 kg / m³. They are particularly suitable for conveying pre-mixed materials prepared in a specific ratio, and can also transport soft-packaged goods. With rapid technological advancements, the application of belt conveyors is becoming increasingly widespread. Traditional belt conveyors typically have their drive and tensioning devices located at both ends. While this ensures operational requirements, it can lead to instability, belt loosening, and slippage during production and installation. Existing central drive or tensioning devices are often separate designs, resulting in low transmission efficiency and large space requirements. Furthermore, belts are prone to loosening during forward and reverse operation, affecting conveying efficiency. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention aims to provide a compact, stable, and reversible belt conveyor device that supports both forward and reverse rotation and end-to-end feeding. This device integrates a drive unit and a tensioning unit in the middle of the belt conveyor, and combines the transmission frame and the screw tensioning frame into a single unit. A hollow shaft geared motor enables forward and reverse belt rotation. This invention solves problems such as unstable belt operation, belt loosening, and slippage in belt conveyors, and allows for end-to-end feeding, improving work efficiency and reducing production and investment costs.

[0004] To achieve the above technical objectives, the following technical solutions were adopted:

[0005] A belt conveyor mid-drive and tensioning forward and reverse reversing device includes a transmission frame and a spiral tensioning frame integrally connected to the right side of the transmission frame. Both the transmission frame and the spiral tensioning frame are located below the middle of the entire belt. A transmission drum, a redirecting drum located to the upper right of the transmission drum, and an additional redirecting drum located to the lower right of the transmission drum are rotatably mounted on the transmission frame. A power device for rotating the transmission drum is directly connected to the side of the transmission drum. A spiral tensioning device is provided on the right side of the redirecting drum, and the spiral tensioning device is mounted on the spiral tensioning frame.

[0006] Furthermore, the redirecting roller is rotatably mounted on a roller seat located below it, the roller seat being slidably mounted on the transmission frame and capable of longitudinal movement on the helical tensioning device.

[0007] Furthermore, the spiral tensioning device has a built-in screw adjustment mechanism that can dynamically adjust the belt tension.

[0008] Furthermore, the screw adjustment mechanism is controlled by a handwheel or electric drive to achieve precise adjustment of belt tension.

[0009] Furthermore, the screw adjustment mechanism is equipped with a self-locking nut to prevent tension relaxation caused by vibration or load changes.

[0010] Furthermore, the power unit is mounted on a power unit base, and the power unit base is provided with a buffer pad to absorb the vibration and impact of the power unit during operation.

[0011] Furthermore, the power unit is a hollow shaft geared motor, and the belt runs bidirectionally by controlling the forward and reverse rotation of the hollow shaft geared motor.

[0012] Furthermore, the installation position of the reversing roller is adjustable. By adjusting the distance between it and the drive roller, the belt wrap angle can be increased to 220°~240° to further prevent belt slippage.

[0013] Furthermore, the surface of the drive roller is cast with a rubber layer, and herringbone or diamond grooves are engraved on the surface to enhance friction.

[0014] The beneficial effects achieved by this utility model are:

[0015] This invention provides a mid-section drive and tensioning forward / reverse device for a belt conveyor. Compared with existing technologies, placing the drive unit in the middle of the conveyor allows for effective transmission of driving force across the entire belt length, ensuring uniform conveyor operation. Placing the tensioning device in the middle better balances belt tension, maintaining a relatively consistent tension along the entire length, ensuring belt stability and accuracy. Furthermore, the integrated design of the drive frame and tensioning frame optimizes the overall conveyor layout, simplifies installation, and improves installation accuracy and load-bearing capacity. Adding a reversing roller increases the drive wrap angle, further preventing belt slippage. Therefore, this invention offers advantages such as simple structure, convenient installation, good load-bearing capacity, excellent belt tension, and stable conveying. Attached Figure Description

[0016] The present invention will now be described in conjunction with the accompanying drawings.

[0017] Appendix Figure 1 This is a front view schematic diagram of the overall structure of this utility model.

[0018] Appendix Figure 2 This is a top view of the overall structure of this utility model.

[0019] Appendix Figure 3 This is a side view of the overall structure of this utility model.

[0020] In the diagram: 1-Transmission frame; 11-Drum seat; 2-Transmission drum; 3-Power unit; 31-Power unit base; 4-Redirecting drum; 5-Redirecting drum with increased surface area; 6-Screw tensioning device; 7-Screw tensioning frame; 8-Belt. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figure 1-3 As shown, the present invention discloses a belt conveyor mid-drive and tension forward and reverse reversing device, including a transmission frame 1, a transmission drum 2, a redirecting drum 4, an increasing-surface redirecting drum 5, a spiral tensioning device 6, and a spiral tensioning frame 7.

[0023] The transmission frame 1 and the spiral tensioning frame 7 are located at the lower middle part of the entire belt 8. The spiral tensioning frame 7 is located on the right side of the transmission frame 1 and is designed as an integral part of the transmission frame 1.

[0024] The transmission frame 1 is rotatably mounted with a transmission drum 2, a redirecting drum 4, and an additional redirecting drum 5.

[0025] The surface of the drive roller 2 is coated with a rubber layer, and herringbone or diamond grooves are engraved on the surface to enhance the friction between the belt 8 and the drive roller 2.

[0026] The transmission roller 2 is directly connected to the power device 3 that powers its rotation. The power device 3 is a hollow shaft geared motor. The belt 8 runs bidirectionally by controlling the forward and reverse rotation of the hollow shaft geared motor. The bottom of the power device 3 is provided with a power device base 31. The power device base 31 is provided with a buffer pad to absorb the vibration and impact of the power device 3 during operation.

[0027] The redirecting roller 4 is located to the upper right of the transmission roller 2. A spiral tensioning device 6 is provided on its right side. It is rotatably mounted on the roller seat 11 located below it. The roller seat 11 is slidably mounted on the transmission frame 1 and can move longitudinally on the spiral tensioning device 6 to dynamically adjust the tension of the belt 8.

[0028] The increasing-surface redirecting roller 5 is located to the lower right of the drive roller 2. Its installation position is adjustable. By adjusting the distance between it and the drive roller 2, the wrap angle of the belt 8 is increased to 220°~240°, further preventing the belt 8 from slipping.

[0029] The spiral tensioning device 6 is installed on the spiral tensioning frame 7 and has a built-in screw adjustment mechanism that can dynamically adjust the tension of the belt 8. The screw adjustment mechanism is controlled by a handwheel or electric drive to achieve precise adjustment of the tension of the belt 8. It is also equipped with a self-locking nut. After adjustment, the screw position is fixed by the self-locking nut to prevent tension relaxation caused by vibration or load changes.

[0030] Its working steps are as follows:

[0031] (i) Based on the selection of the belt conveyor and the characteristics of the conveyed materials, calculate the power of the hollow shaft geared motor required for this device, and select the appropriate geared motor model;

[0032] (ii) Based on the selection of the belt conveyor, reasonably select the model of the drive roller 2, the model of the redirecting roller 4, the model of the surface-enhancing redirecting roller 5, and the model of the spiral tensioning device 6;

[0033] (iii) Based on the actual space on site, the transmission frame 1 and the screw tensioning frame 7 are arranged reasonably, the transmission frame 1 and the screw tensioning frame 7 are welded into a whole, and the power unit base 31 is fixedly installed at the same time.

[0034] (iv) After the equipment is installed, dynamic debugging is carried out. The tension of the belt 8 is adjusted in real time through the spiral tensioning device 6 to ensure smooth operation.

[0035] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0036] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A drive and tensioning forward and reverse rotation device for the middle section of a belt conveyor, characterized in that: The system includes a transmission frame (1) and a spiral tensioning frame (7) integrally connected to the right side of the transmission frame (1). Both the transmission frame (1) and the spiral tensioning frame (7) are located below the middle of the entire belt (8). The transmission frame (1) is rotatably mounted with a transmission roller (2), a redirecting roller (4) located on the upper right side of the transmission roller (2), and an increasing-surface redirecting roller (5) located on the lower right side of the transmission roller (2). The side of the transmission roller (2) is directly connected to a power device (3) for its rotation. The right side of the redirecting roller (4) is provided with a spiral tensioning device (6), which is mounted on the spiral tensioning frame (7).

2. The belt conveyor mid-drive and tensioning forward and reverse rotation device according to claim 1, characterized in that: The redirecting roller (4) is rotatably mounted on the roller seat (11) located below it, the roller seat (11) is slidably mounted on the transmission frame (1) and can move longitudinally on the screw tensioning device (6).

3. The belt conveyor mid-drive and tensioning forward and reverse reversing device according to claim 2, characterized in that: The spiral tensioning device (6) has a built-in screw adjustment mechanism that can dynamically adjust the tension of the belt (8).

4. The belt conveyor mid-drive and tensioning forward and reverse reversing device according to claim 3, characterized in that: The screw adjustment mechanism is controlled by a handwheel or electric drive to achieve precise adjustment of the belt (8) tension.

5. The belt conveyor mid-drive and tensioning forward and reverse reversing device according to claim 4, characterized in that: The screw adjustment mechanism is equipped with a self-locking nut to prevent tension relaxation caused by vibration or load changes.

6. The belt conveyor mid-drive and tensioning forward and reverse reversing device according to claim 1, characterized in that: The power unit (3) is installed on the power unit base (31), and the power unit base (31) is provided with a buffer pad to absorb the vibration and impact of the power unit (3) during operation.

7. A belt conveyor mid-section drive and tensioning forward and reverse rotation device according to claim 6, characterized in that: The power unit (3) is a hollow shaft geared motor, which controls the bidirectional operation of the belt (8) through the forward and reverse rotation of the hollow shaft geared motor.

8. The belt conveyor mid-section drive and tensioning forward and reverse rotation device according to claim 1, characterized in that: The installation position of the increasing-surface redirecting roller (5) is adjustable. By adjusting the distance between it and the drive roller (2), the wrap angle of the belt (8) can be increased to 220°~240°, further preventing the belt (8) from slipping.

9. A belt conveyor mid-drive and tensioning forward and reverse reversing device according to any one of claims 1-8, characterized in that: The drive roller (2) has a rubber layer cast on its surface and herringbone or diamond grooves engraved on the surface to enhance friction.

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