Belt tensioning device and tower belt machine

Abstract

The utility model relates to the technical field of tower belt conveyors, and discloses a belt tensioning device and a tower belt conveyor. The belt tensioning device comprises a roller assembly, an adjusting assembly and a jacking piece. The roller assembly comprises a tensioning roller and a turnabout roller which are arranged in the length direction of the truss in a spaced mode. Belts are wound on the peripheries of the turnabout drum and the tensioning drum, and the tensioning drum is used for tensioning the belts. The adjusting assembly can slide on the truss and comprises a first adjusting seat and a second adjusting seat, the first adjusting seat is located between the turnabout drum and the second adjusting seat, and the tensioning drum is connected to the second adjusting seat. The jacking piece is arranged on the first adjusting seat and located between the first adjusting seat and the second adjusting seat, and the jacking piece can drive the second adjusting seat to move in the length direction of the truss so as to adjust the tensioning stroke of the belt. Compared with a tensioning device in the prior art, the belt tensioning device is simpler in structure, low in production cost and higher in belt tensioning stroke adjusting precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of tower belt conveyors, specifically relating to a belt tensioning device and a tower belt conveyor. Background Technology

[0002] The tensioning device is a key component for the normal operation of a belt conveyor. With years of industry development, various types of tensioning devices have been successfully applied in the bulk material conveying industry. The most widely used are counterweight tensioning devices, screw tensioning devices, and hydraulic tensioning devices. However, each type of tensioning device has its own specific application scenarios and advantages and disadvantages.

[0003] The counterweight tensioning device is used for medium- to long-distance, high-load belt conveyors. It automatically adjusts the tension by utilizing the gravity of the counterweight block. The disadvantage is that it occupies a large space and is relatively complex to install and maintain.

[0004] The screw tensioning device is suitable for short-distance, light-load belt conveyors. The tension is manually adjusted using the screw mechanism. The disadvantage is that the adjustment accuracy is low and automatic control cannot be achieved.

[0005] Hydraulic tensioning devices are used for belt conveyors with long distances, heavy loads, or those requiring precise control of tension. However, they have the disadvantage of complex structure and high maintenance costs.

[0006] In summary, existing tensioning devices suffer from technical problems such as complex structure and poor adjustment accuracy. Utility Model Content

[0007] The purpose of this invention is to provide a belt tensioning device and a tower belt conveyor, which solves the technical problems of complex structure and poor adjustment accuracy of existing tensioning devices.

[0008] To achieve the above objectives, this utility model provides a belt tensioning device, mounted on a truss, comprising:

[0009] The roller assembly includes a redirecting roller and a tensioning roller arranged at intervals along the length of the truss. Both the redirecting roller and the tensioning roller are wrapped with a belt around their outer periphery. The tensioning roller is used to tension the belt.

[0010] The adjustment assembly slides with the truss. The adjustment assembly includes a first adjustment seat and a second adjustment seat. The first adjustment seat is located between the redirecting roller and the second adjustment seat, and the tensioning roller is connected to the second adjustment seat.

[0011] A top support is disposed on the first adjusting seat and located between the first adjusting seat and the second adjusting seat. The top support can drive the second adjusting seat to move along the length direction of the truss to adjust the tension stroke of the belt.

[0012] In an embodiment of this utility model, the belt tensioning device further includes a slide rail, which is mounted on the truss and extends along the length of the truss. The first adjusting seat and the second adjusting seat are both slidably engaged with the slide rail.

[0013] In an embodiment of this utility model, the belt tensioning device further includes a guide rod extending along the length direction of the truss, the guide rod sequentially passing through the first adjusting seat and the second adjusting seat.

[0014] In an embodiment of this utility model, the belt tensioning device further includes a first locking fastener, which is threadedly connected to the guide rod and located on the side of the first adjusting seat opposite to the second adjusting seat. The first locking fastener is used to lock or unlock the first adjusting seat.

[0015] In an embodiment of this utility model, the belt tensioning device further includes a second locking device, which is threadedly connected to the guide rod and located between the first adjusting seat and the second adjusting seat. The second locking device is used to lock or unlock the second adjusting seat.

[0016] In an embodiment of this utility model, the second adjusting seat includes a seat body and a mounting part. The seat body extends along the height direction, and the mounting part is connected to the side of the seat body opposite to the first adjusting seat. The end of the tensioning roller is connected to the mounting part.

[0017] In an embodiment of this utility model, the tensioning roller includes a roller body and a connecting shaft connected to both ends of the roller body along its length. The mounting part has an installation port through which the connecting shaft passes, and the outer peripheral wall of the connecting shaft can rotate and engage with the inner peripheral wall of the installation port.

[0018] In an embodiment of this utility model, the top support is a hydraulic jack, and the belt tensioning device also includes a placement plate, as well as a hydraulic component and a pressure detection module installed on the placement plate. The hydraulic component is hydraulically driven and connected to the hydraulic jack, and the pressure detection module is used to detect the top support pressure of the top support.

[0019] In an embodiment of this utility model, a tower belt conveyor is also provided, including the belt tensioning device described above.

[0020] Through the above technical solutions, the belt tensioning device and tower belt conveyor provided by the embodiments of this utility model have the following beneficial effects:

[0021] The belt tensioning device in this embodiment is mounted on a truss and includes a roller assembly, an adjusting assembly, and a top support. The roller assembly includes a tensioning roller and a redirecting roller spaced apart along the length of the truss. A belt is wound around the outer periphery of both the redirecting roller and the tensioning roller, and the tensioning roller is used to tension the belt. The adjusting assembly slides with the truss and includes a first adjusting seat and a second adjusting seat. The first adjusting seat is located between the redirecting roller and the second adjusting seat, and the tensioning roller is connected to the second adjusting seat. The top support is mounted on the first adjusting seat and located between the first and second adjusting seats. The top support drives the second adjusting seat to move along the length of the truss to adjust the belt tension. The belt tensioning device in this application has a first adjusting seat and a second adjusting seat that can slide relative to the truss. The top support drives the second adjusting seat to move along the length of the truss, causing the tensioning roller on the second adjusting seat to move together. This causes the tensioning roller and the redirecting roller to move closer or further apart, thereby adjusting the belt tension. The belt tensioning device in this application has a simpler structure, lower production cost, and higher adjustment accuracy for belt tension compared to existing tensioning devices.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the belt tensioning device installed on the truss according to this utility model, viewed from one angle.

[0025] Figure 2 This is a schematic diagram of the belt tensioning device installed on the truss according to another perspective of the present invention.

[0026] Figure 3 This is a schematic diagram of the belt tensioning device according to the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the second adjusting seat according to the present invention.

[0028] Explanation of reference numerals in the attached figures

[0029] 12 tensioning rollers 223 ear plates

[0030] 121 Roller body 3 Top support component

[0031] 122 Connecting shaft 4 Slide rail

[0032] 2 Adjustment Components 5 Guide Rod

[0033] 21 First Adjusting Seat 6 First Locking Fitting

[0034] 22 Second Adjustment Seat 7 Second Locking Fitting

[0035] 221-seat body, 8 pressure monitors

[0036] 222 Installation Section 20 Truss Detailed Implementation

[0037] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0038] The belt tensioning device and tower belt conveyor according to the present invention are described below with reference to the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, the belt tensioning device in this embodiment is mounted on the truss 20. The belt tensioning device includes a roller assembly, an adjusting assembly 2, and a top support 3. The roller assembly includes a redirecting roller and a tensioning roller 12 spaced apart along the length of the truss 20. A belt is wound around the outer periphery of both the redirecting roller and the tensioning roller 12, and the tensioning roller 12 is used to tension the belt. The adjusting assembly 2 is slidable on the truss 20 and includes a first adjusting seat 21 and a second adjusting seat 22. The first adjusting seat 21 is located between the redirecting roller and the second adjusting seat 22, and the tensioning roller 12 is connected to the second adjusting seat 22. The top support 3 is mounted on the first adjusting seat 21 and located between the first adjusting seat 21 and the second adjusting seat 22. The top support 3 can drive the second adjusting seat 22 to move along the length of the truss 20 to adjust the belt tension stroke. The belt tensioning device in this application is equipped with a first adjusting seat 21 and a second adjusting seat 22 that can slide relative to the truss 20. The second adjusting seat 22 is driven to move along the length of the truss 20 via a top support 3, thereby causing the tensioning roller 12 on the second adjusting seat 22 to move together. This allows the redirecting roller and the tensioning roller 12 to move closer or further apart, thus adjusting the belt tension stroke. Compared to existing tensioning devices, the belt tensioning device in this application has a simpler structure, lower production cost, and higher accuracy in adjusting belt tension. It should be noted that the length direction of the truss 20 is... Figure 1 In the front-to-back direction, the width direction of truss 20 is... Figure 4The left and right directions are shown. The top support 3 is a hydraulic jack. The redirecting roller is located at the front end of truss 20 and is not shown in the figure.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, the belt tensioning device further includes a slide rail 4, which is mounted on the truss 20 and extends along the length of the truss 20. The first adjusting seat 21 and the second adjusting seat 22 are both slidably engaged with the slide rail 4. Specifically, in this embodiment, two slide rails 4 are provided on each of the left and right sides of the truss 20 along its width. Taking the two slide rails 4 on the left side as an example, the two slide rails 4 are arranged along the height direction of the truss 20 and are both slidably engaged with the first adjusting seat 21 and the second adjusting seat 22, improving the stability of the first adjusting seat 21 and the second adjusting seat 22 sliding along the slide rail 4. The arrangement of the two slide rails 4 on the right side is the same as that of the two slide rails 4 on the left side. The height direction of the truss 20 is... Figure 2 The up and down directions in the middle.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the belt tensioning device further includes a guide rod 5 extending along the length direction of the truss 20. The guide rod 5 sequentially passes through the first adjusting seat 21 and the second adjusting seat 22. Similarly, along the width direction of the truss 20, two guide rods are provided on each of the left and right sides of the truss 20. Taking the two guide rods on the left side as an example, the two guide rods are spaced apart along the height direction of the truss 20 and sequentially pass through the first adjusting seat 21 and the second adjusting seat 22, serving to guide the first adjusting seat 21 and the second adjusting seat 22, further improving the stability of the first adjusting seat 21 and the second adjusting seat 22 sliding along the slide rail 4, and achieving high belt adjustment accuracy.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the belt tensioning device further includes a first locking fastener 6. The first locking fastener 6 is threadedly connected to the guide rod 5 and located on the side of the first adjusting seat 21 opposite to the second adjusting seat 22. The first locking fastener 6 is used to lock or unlock the first adjusting seat 21. The guide rod 5 has an external thread on its outer peripheral wall, and the first locking fastener 6 has an internal thread adapted to the external thread on its inner peripheral wall. In this embodiment, by providing the first locking fastener 6 on the side of the first adjusting seat 21 opposite to the second adjusting seat 22, the first adjusting seat 21 can be stably locked and limited, preventing it from moving forward. Since the top support 3 will drive the second adjusting seat 22 to move away from the first adjusting seat 21, i.e., backward, the first adjusting seat 21 will bear the reverse force of the top support 3, and the first adjusting seat 21 will also be unable to move backward.

[0043] Furthermore, when the length of the support rod on the top support member 3 extends to its limit but still cannot drive the tensioning roller 12 to tension the belt, the support rod on the top support member 3 can be fully retracted and the first adjusting seat 21 can be driven to move backward. After the first adjusting seat 21 moves a preset distance, the first locking fastener 6 is adjusted backward along the guide rod 5 and pressed against the first adjusting seat 21 to limit the first adjusting seat 21. At this time, the support rod on the top support member 3 is driven to extend and support the second adjusting seat 22, thereby achieving belt tension. The belt tensioning device of this embodiment can conveniently achieve belt tension adjustment, is simple to operate, and has high tensioning accuracy. The preset distance can be adjusted according to actual needs. In addition, the second adjusting seat 22 is also provided with ear plates 223, which facilitates the lifting and installation of the second adjusting seat 22 on the truss 20. Specifically, ear plates 223 are provided on both the front and rear sides of the second adjusting seat 22, which can further improve the stability of lifting. The number of ear plates 223 can be adjusted according to actual needs.

[0044] like Figure 1 and Figure 2 As shown, in this embodiment, the belt tensioning device further includes a second locking member 7. The second locking member 7 is threadedly connected to the guide rod 5 and located between the first adjusting seat 21 and the second adjusting seat 22. The second locking member 7 is used to lock or unlock the second adjusting seat 22. The guide rod 5 has an external thread on its outer peripheral wall, and the second locking member 7 has an internal thread adapted to the external thread on its inner peripheral wall. The second locking member 7 can limit the movement of the second adjusting seat 22, preventing it from moving forward under the belt contraction force, thus avoiding belt slack caused by the tensioning roller 12 and the redirecting roller approaching each other. Furthermore, when the top support 3 drives the second adjusting seat 22 to move backward, it can also drive the second locking member 7 to move backward along the guide rod 5 until it abuts against the second adjusting seat 22, thus assisting the top support 3 in supporting the second adjusting seat 22 and ensuring the stability of the belt tension.

[0045] like Figure 3As shown, in this embodiment, there are two first adjusting seats 21 and two second adjusting seats 22. The two first adjusting seats 21 are arranged at intervals along the width direction of the truss 20, and the two second adjusting seats 22 are arranged at intervals along the width direction of the truss 20. Each second adjusting seat 22 includes a seat body 221 and a mounting part 222. The seat body 221 extends along the height direction and both ends are slidably engaged with the slide rail 4. The end of the tensioning roller 12 is rotatably connected to the mounting part 222 through a bearing seat. Specifically, the tensioning roller 12 is connected to different mounting parts 222 at its left and right ends to ensure that the tensioning roller 12 can rotate stably relative to the mounting part 222. The mounting part 222 is connected to the side of the seat body 221 away from the first adjusting seat 21 to avoid interfering with the adjustment of the distance between the first adjusting seat 21 and the second adjusting seat 22 by the top support 3. The width direction of the truss 20 is the left and right direction in the figure.

[0046] like Figure 4 As shown, in this embodiment, the tensioning roller 12 includes a roller body 121 and connecting shafts 122 connected to both ends of the roller body 121 along its length. The mounting portion 222 has a mounting opening through which the connecting shaft 122 passes, and the outer peripheral wall of the connecting shaft 122 can rotatably engage with the inner peripheral wall of the mounting opening. Furthermore, to improve the rotational engagement between the mounting portion 222 and the connecting shaft 122, a bearing can be added. The bearing has a mounting opening through which the connecting shaft 122 passes, making the relative rotation between the mounting portion 222 and the connecting shaft 122 smoother.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the top support 3 is a hydraulic jack. The belt tensioning device also includes a mounting plate, and a hydraulic assembly and a pressure detection module mounted on the mounting plate. The hydraulic assembly includes a hydraulic pump and a pressure display 8. The hydraulic pump is hydraulically driven and connected to the hydraulic jack. The pressure detection module includes a pressure sensor, which is connected to both the pressure display 8 and the hydraulic pump and is used to detect the top support pressure of the top support 3. The pressure on the top support 3 is displayed on the pressure display 8, thus visualizing the top support pressure. After the belt conveyor has been running for a long time, the belt will stretch due to its elasticity, reducing the tension on the tensioning roller 12 and decreasing the pressure fed back to the pressure display 8. At this time, the inspector can determine that the belt tension is insufficient by observing the reading on the pressure display 8, and the positions of the first adjusting seat 21 and the second adjusting seat 22 need to be adjusted.

[0048] In this embodiment, a tower belt conveyor is also proposed, including the belt tensioning device described above. Since the tower belt conveyor employs all embodiments of the belt tensioning device, it also possesses all the beneficial effects brought by the belt tensioning device, which will not be elaborated upon here. It should be noted that traditional spiral tensioning devices, due to their structural limitations, are typically only suitable for tensioning short belt conveyors. However, the technical solution in this application allows for adjustment of the specifications of the guide rod 5, the first locking fastener 6, and the second locking fastener 7 according to the belt conveyor's tension requirements, and corresponding adjustments to the size of the matching jacks and pump station. Theoretically, it is not limited by the length of the belt conveyor, thus having a wider range of applications.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A belt tensioning device, mounted on a truss (20), characterized in that, The belt tensioning device includes: The roller assembly includes a redirecting roller and a tensioning roller (12) arranged at intervals along the length of the truss (20). The outer periphery of both the redirecting roller and the tensioning roller (12) is wrapped with a belt, and the tensioning roller (12) is used to tension the belt. Adjustment assembly (2) is slidably engaged with the truss (20). The adjustment assembly (2) includes a first adjustment seat (21) and a second adjustment seat (22). The first adjustment seat (21) is located between the redirecting roller and the second adjustment seat (22). The tensioning roller (12) is connected to the second adjustment seat (22). A top support (3) is disposed on the first adjusting seat (21) and located between the first adjusting seat (21) and the second adjusting seat (22). The top support (3) can drive the second adjusting seat (22) to move along the length direction of the truss (20) to adjust the tension stroke of the belt.

2. The belt tensioning device according to claim 1, characterized in that, The belt tensioning device also includes a slide rail (4), which is mounted on the truss (20) and extends along the length of the truss (20). The first adjusting seat (21) and the second adjusting seat (22) are both slidably engaged with the slide rail (4).

3. The belt tensioning device according to claim 1, characterized in that, The belt tensioning device also includes a guide rod (5) extending along the length of the truss (20), the guide rod (5) passing through the first adjusting seat (21) and the second adjusting seat (22) in sequence.

4. The belt tensioning device according to claim 3, characterized in that, The belt tensioning device further includes a first locking fastener (6), which is threaded onto the guide rod (5) and located on the side of the first adjusting seat (21) away from the second adjusting seat (22). The first locking fastener (6) is used to lock or unlock the first adjusting seat (21).

5. The belt tensioning device according to claim 3, characterized in that, The belt tensioning device further includes a second locking device (7), which is threaded onto the guide rod (5) and located between the first adjusting seat (21) and the second adjusting seat (22). The second locking device (7) is used to lock or unlock the second adjusting seat (22).

6. The belt tensioning device according to any one of claims 1 to 5, characterized in that, The second adjusting seat (22) includes a seat body (221) and a mounting part (222). The seat body (221) extends along the height direction, and the mounting part (222) is connected to the side of the seat body (221) away from the first adjusting seat (21). The end of the tensioning roller (12) is rotatably connected to the mounting part (222).

7. The belt tensioning device according to claim 6, characterized in that, The tensioning roller (12) includes a roller body (121) and a connecting shaft (122) connected to both ends of the roller body (121) in the length direction. The mounting part (222) has a mounting port through which the connecting shaft (122) passes. The outer peripheral wall of the connecting shaft (122) can rotate with the inner peripheral wall of the mounting port.

8. The belt tensioning device according to any one of claims 1 to 5, characterized in that, The top support (3) is a hydraulic jack. The belt tensioning device also includes a placement plate, a hydraulic component and a pressure detection module installed on the placement plate. The hydraulic component is hydraulically driven connected to the hydraulic jack, and the pressure detection module is used to detect the top support pressure of the top support (3).

9. A tower belt conveyor, characterized in that, Includes the belt tensioning device according to any one of claims 1 to 8.

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