Adjustable belt blocking device of turning belt conveyor

Abstract

The utility model discloses an adjustable belt blocking device of a turning belt conveyor. The adjustable belt blocking device mainly solves the technical problem that normal operation of the belt conveyor is affected due to the fact that a conveying belt is prone to deviation when an existing turning belt conveyor turns with a relatively large diameter. The side limiting assembly is vertically arranged on the top of a rack on the outer side of the turning position of the belt conveyor, and the upper limiting assembly is relatively fixed to the top position of one side of the side limiting assembly. Each of the side limiting assemblies and the upper limiting assembly comprises a support, an external threaded rod and a limiting roller, wherein an adjusting hole is correspondingly formed in one end of the support, and a hinge seat is arranged at the other end of the support; the external threaded rod is arranged in the adjusting hole in a penetrating mode, and a hinge head is arranged at one end of the external threaded rod; and the two fastening nuts are in threaded connection with the external threaded rod. According to the belt blocking device, the position of the conveying belt at the turning position under different working conditions can be limited, and normal operation of the belt conveyor during turning is guaranteed.

Description

Technical Field

[0001] This application relates to the field of coal mining equipment technology, specifically to an adjustable belt stop device for a turning belt conveyor. Background Technology

[0002] Turning belt conveyors are crucial conveying equipment used in coal mining to change the horizontal transport direction of materials such as coal. In underground coal mines, due to limitations in roadway layout, mining processes, or equipment arrangement, coal transport routes often need to bend. Turning belt conveyors are designed to meet this need. They can efficiently and stably transition coal from a straight conveyor line to another conveyor line in a different direction, improving the flexibility and efficiency of coal transportation.

[0003] A turning belt conveyor mainly consists of a drive unit, conveyor belt, idler roller assembly, turning device, frame, and tensioning device. The turning device typically comprises a special idler roller assembly; by adjusting the support angle and arrangement of the idlers on the conveyor belt, the conveyor belt maintains a relatively stable running trajectory during the turning process.

[0004] Existing turning belt conveyors can meet the turning requirements of small radius through the special idler roller layout of the turning device. However, in low-altitude coal mining, the conveyor belt carries a large weight of coal, which increases the centrifugal force on the conveyor belt when it passes through the turning position. The conveyor belt is very prone to deviating, which affects the normal operation of the belt conveyor and poses a risk of the transported coal falling off.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, this disclosure provides an adjustable belt deflector for a turning belt conveyor, which mainly solves the technical problem that the conveyor belt of an existing turning belt conveyor is prone to deviation when turning at a relatively large diameter, thus affecting the normal operation of the belt conveyor.

[0007] According to one aspect of this disclosure, an adjustable belt stop device for a turning belt conveyor is provided, comprising a side limiting assembly erected on the top of the outer frame at the turning point of the belt conveyor, and an upper limiting assembly fixed relative to the top position of one side of the side limiting assembly; the side limiting assembly and the upper limiting assembly each include a bracket with an adjustment hole at one end and a hinge seat at the other end, an externally threaded rod passing through the adjustment hole and having a hinge joint at one end, a limiting roller with both ends respectively hinged to the hinge seat and the hinge joint, and two fastening nuts threadedly connected to the externally threaded rod.

[0008] In some embodiments of this disclosure, the angle between the axial direction of the side limiting component's bracket and the vertical direction perpendicular to the belt conveyor is 0 to 20°; the angle between the upper limiting component and the bracket of the side limiting component is 70 to 90°.

[0009] In some embodiments of this disclosure, the adjustment hole is a strip-shaped hole arranged along the axial direction of the support.

[0010] In some embodiments of this disclosure, the adjusting hole is a circular hole with a diameter larger than that of the external threaded rod.

[0011] In some embodiments of this disclosure, the end of the fastening nut that contacts the bracket is a dome-shaped end, and the radius of the dome of the dome-shaped end is larger than the radius of the adjustment hole.

[0012] In some embodiments of this disclosure, the hinge joint is L-shaped.

[0013] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages: The limiting rollers in the side limiting assembly limit the conveyor belt from the side, while the limiting rollers in the upper limiting assembly limit the conveyor belt from the top, preventing the conveyor belt from running off-center or slipping under centrifugal force, thus achieving a reliable limiting effect. Furthermore, since the limiting angles of the limiting rollers in the side and upper limiting assemblies are adjustable, this belt-blocking device can adapt to various working conditions such as different conveying speeds and different conveying weights, thereby ensuring the relative stability of the conveyor belt at turns and ensuring the normal operation of the belt conveyor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the adjustable belt stop device for a turning belt conveyor in one embodiment of this application.

[0015] Figure 2 This is a schematic diagram of the fastening nut in one embodiment of this application.

[0016] Figure 3 This is a schematic diagram illustrating the effect verification of the adjustable belt stop device for a turning belt conveyor in one embodiment of this application.

[0017] In the above figures, 11 is the side limiting component, 12 is the upper limiting component, 1 is the bracket, 2 is the limiting roller, 3 is the external threaded rod, 4 is the hinge seat, 5 is the hinge joint, 6 is the fastening nut, and 61 is the dome-shaped end. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] To address the problem that existing turning belt conveyors are prone to belt deviation and detachment from the conveyor rollers under centrifugal force when turning at slightly larger diameters, thus affecting the normal operation of the conveyor and causing coal chunks to fall, this example discloses an adjustable belt-stopping device for turning belt conveyors. (See [link to relevant documentation]). Figure 1 It includes a side limit component 11 and an upper limit component 12 that work together.

[0021] Specifically, in this embodiment, considering that when the conveyor belt of the belt conveyor makes a large-diameter turn, the conveyor belt is affected by centrifugal force on the one hand, and on the other hand, due to the different turning radii on both sides of the conveyor belt, the side with the larger turning radius will lift up, thereby reducing the contact friction between the conveyor belt and the belt conveyor idler rollers, and thus further aggravating the belt deviation. Therefore, in this embodiment, a side limiting component 11 is provided at the turning point of the belt conveyor to limit the deviation of the conveyor belt. Specifically, the side limiting component is fixed to the side of the belt conveyor frame at the turning point corresponding to the side of the conveyor belt with the larger turning diameter, thereby limiting the deviation of the conveyor belt along its path. See also... Figure 1 To ensure the side limiting component is installed and fixed, in this example, the side limiting component includes a bracket 1, which is erected at the top of the belt conveyor frame. In this example, the bracket 1 is made of channel steel and is fixed to the top surface of the belt conveyor frame by welding.

[0022] However, relying solely on bracket 1 is insufficient to limit the movement of the conveyor belt. Furthermore, when relying solely on the bracket for limiting, the conveyor belt and bracket are in hard contact. As the conveyor belt rotates continuously, this leads to significant wear at the contact point, reducing the conveyor belt's lifespan. Therefore, in this embodiment, a limiting roller 2 is provided. The rolling of the limiting roller 2 around its axis causes sliding friction between the conveyor belt and the limiting roller 2, thereby greatly reducing conveyor belt wear.

[0023] Furthermore, considering that the conveyor speed of the belt conveyor is not constant and needs to be adjusted according to production requirements, and that the weight of the coal transported by the conveyor belt varies, the degree of belt deviation at turning points will differ. To ensure that the side limiting component 11 adapts to different production conditions and achieves the best anti-belt deviation effect, in this embodiment, see... Figure 1 One end of the limiting roller 2 is hinged to the bracket 1, and the other end is adjusted by the external threaded rod 3 to adjust the angle between the axial direction of the limiting roller 2 and the axial direction of the bracket 1, so that the limiting roller 2 can limit the conveyor belt to different degrees at different height positions.

[0024] Specifically, in this embodiment, the limiting roller 2 is hinged to the bracket 1 via a hinge seat 4. The bottom of the bracket 1 is closed, which increases the contact area with the conveyor frame, enhancing the stability of the connection; it also serves to fix the hinge seat 4, providing a mounting surface for the hinge seat 4. To achieve an adjustable angle between the limiting roller 2 and the bracket 1, in this embodiment, see... Figure 1 An adjustment hole is provided at the upper part of the bracket, and an external threaded rod 3 is inserted through the adjustment hole. A hinge joint 5 is fixed at the end of the external threaded rod 3. By adjusting the relative position between the external threaded rod 3 and the bracket 1, i.e., the length of the external threaded rod 3 extending out of the bracket 1, the angle between the limiting roller 2 and the bracket can be adjusted. After the external threaded rod 3 extends out of the bracket 1 to a suitable length so that the limiting roller 2 reaches the ideal limiting position, in this example, two fastening nuts 6 are provided on the external threaded rod 3 to ensure the stability of the limiting position. By clamping the fastening nuts on both sides of the bracket 1, the relative position between the external threaded rod 3 and the bracket 1 is fixed, thereby ensuring that the position of the limiting roller 2 will not change when subjected to the reaction force of the belt running off-track, thus ensuring the limiting effect on the conveyor belt.

[0025] In this embodiment, considering that when adjusting the angle between the limiting roller 2 and the bracket 1 via the external threaded rod 3, there is a certain angle between the external threaded rod 3 and the surface of the bracket 1 where the adjusting hole is located, the end faces of the two fastening nuts 6 cannot fully and tightly contact the bracket 1, thus greatly reducing the fastening effect of the fastening nuts 6. Therefore, in this embodiment, in order to prevent the external threaded rod 3 from interfering with the bracket when adjusting the limiting angle of the limiting roller 2, the adjusting hole is set to be a circular hole, and the diameter of the circular hole is larger than the diameter of the external threaded rod 3, so that the external threaded rod 3 can be inserted into the adjusting hole of the bracket at a certain angle. At the same time, in order to ensure the fastening effect of the fastening nuts 6, see [reference needed]. Figure 2In this embodiment, the end of the fastening nut 6 that contacts the bracket 1 is a dome-shaped end 61, and the radius of the dome of the dome-shaped end is greater than the radius of the circular adjustment hole. This allows the fastening nut 6 to fully contact the edge of the adjustment hole even if the external thread rod 3 has different included angles with the bracket, through the dome-shaped end 61, thereby ensuring the fastening effect of the fastening nut.

[0026] In some other embodiments, the adjustment hole at the bracket 1 is a strip-shaped hole arranged along the axial direction of the bracket. Thus, by moving the external threaded rod 3 vertically along the hole, the external threaded rod 3 is always perpendicular to the bracket surface where the adjustment hole is located, and at the same time, it can meet the adjustment requirements of the limiting roller 2 at different limiting angles.

[0027] In some other embodiments, in order to avoid the hinge joint 5 interfering with the edge of the limit roller 2 and limiting the adjustable angle of the limit roller 2 when the limit roller 2 is adjusted, the hinge joint is set to be L-shaped in this example, and the adjustment range of the limit roller is increased by the bending space of the L-shape.

[0028] The side limiting component 1 can limit the conveyor belt when it deviates from its designated path. However, when the centrifugal force on the conveyor belt is large, the conveyor belt will move obliquely upward along the limiting rollers that are inclined to the side limiting component, until it detaches from the limiting rollers and causes problems such as belt slippage. Therefore, in this embodiment, see... Figure 1 An upper limit component 2 is installed at the top position on one side of the side limit component. The structure of the upper limit component 2 is the same as that of the side limit component, and will not be described again here. In this example, the bracket of the upper limit component 2 is welded and fixed to the top side of the bracket of the side limit component; in some other embodiments, the bracket of the upper limit component 2 is inverted L-shaped and is directly welded and fixed to the top of the conveyor frame. Furthermore, by setting the upper limit component 2, the limiting roller of the upper limit component restricts the movement range of the conveyor belt at the top, avoiding problems such as conveyor belt deviation and belt slippage.

[0029] In other embodiments, considering that deviation is inevitable at bends under all operating conditions, the angle between the axial direction of the side limiting component's bracket and the vertical direction perpendicular to the conveyor belt is set to 0–20°. This means that initially, the limiting rollers of the side limiting component are inclined relative to the conveyor belt frame, providing lateral limiting. Similarly, to ensure the upper limiting component has a limiting effect initially, the angle between the upper limiting component and the bracket of the side limiting component is set to 70–90°. Therefore, adjustment of the corresponding limiting rollers is only needed when deviation is significant or when belt slippage occurs.

[0030] To verify the effectiveness of the adjustable belt deflector on the turning conveyor, this example demonstrates its effectiveness at the conveyor in an actual turning roadway in a coal mine. (See attached document.) Figure 3 , Figure 3(a) is a schematic diagram of the installation of the belt deflector when the belt conveyor is stationary. Figure 3 (b) is a schematic diagram showing the belt deflector at the bend of the conveyor belt during operation. As can be seen from the diagram, the belt deflector effectively limits the conveyor belt, ensuring the safe and reliable operation of the conveyor belt at bends.

[0031] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0032] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An adjustable belt deflector for a turning belt conveyor, characterized in that, It includes a side limiting assembly erected on the top of the outer frame at the turning point of the belt conveyor, and an upper limiting assembly fixed to the top of one side of the side limiting assembly; the side limiting assembly and the upper limiting assembly each include a bracket with an adjustment hole at one end and a hinge seat at the other end, an external threaded rod passing through the adjustment hole and having a hinge joint at one end, a limiting roller with both ends respectively hinged to the hinge seat and the hinge joint, and two fastening nuts threadedly connected to the external threaded rod.

2. The adjustable belt stop device for a turning belt conveyor according to claim 1, characterized in that, The angle between the axial direction of the side limiting component's bracket and the vertical direction perpendicular to the belt conveyor is 0-20°; the angle between the upper limiting component and the bracket of the side limiting component is 70-90°.

3. The adjustable belt stop device for a turning belt conveyor according to claim 1, characterized in that, The adjustment hole is a strip-shaped hole arranged along the axial direction of the support.

4. The adjustable belt stop device for a turning belt conveyor according to claim 1, characterized in that, The adjusting hole is a circular hole with a diameter larger than that of the external threaded rod.

5. The adjustable belt stop device for a turning belt conveyor according to claim 4, characterized in that, The end of the fastening nut that contacts the bracket is a dome-shaped end, and the radius of the dome of the dome-shaped end is larger than the radius of the adjustment hole.

6. The adjustable belt stop device for a turning belt conveyor according to claim 1, characterized in that, The hinge joint is L-shaped.

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