Tail pulley structure suitable for belt conveyor bottom sweeper

Abstract

This utility model discloses a tail wheel structure suitable for a belt conveyor bottom sweeper, belonging to the field of sweeper technology. The tail wheel structure for a belt conveyor bottom sweeper includes a wheel body and a limiting wheel rim. The wheel body and the limiting wheel rim are integrally formed. A chain body is sleeved on the wheel body, and a scraper is connected to the chain body. The scraper is connected to the chain body through a mounting plate. An avoidance step is provided at the end of the wheel body away from the limiting wheel rim. The tail wheel structure of this utility model for a belt conveyor bottom sweeper features a precisely sized avoidance step that completely isolates the mounting plate from the wheel body, solving the friction and jamming problem in traditional structures. The annular arc bottom of the chain groove fits snugly with the chain link, reducing bounce. The receiving groove restricts the chain link displacement, indirectly fixing the scraper's working position. The first chamfer of the shaft hole simplifies shaft installation, and the second chamfer of the chain groove reduces the difficulty of chain link engagement. The avoidance step reduces material usage while ensuring wheel body strength.

Description

Technical Field

[0001] This utility model relates to the field of sweeper technology, and more specifically, to a tail wheel structure suitable for a belt conveyor bottom sweeper. Background Technology

[0002] like Figure 1 As shown, the tail pulley of a traditional belt conveyor bottom sweeper usually adopts an integral disc structure. When the chain drives the scraper, the mounting plate of the scraper is prone to friction or even jamming with the end face of the tail pulley, which hinders the movement of the scraper, affects the sweeping efficiency, and accelerates the wear of the parts. Although the tail pulley is equipped with a limit wheel edge to protect the chain, it has not been optimized to address the interference problem between the mounting plate and the tail pulley, resulting in insufficient equipment reliability. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tail wheel structure suitable for belt conveyor bottom sweepers to solve the above-mentioned shortcomings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model relates to a tail wheel structure for a belt conveyor bottom sweeper, comprising a wheel body and a limiting wheel rim. The wheel body and the limiting wheel rim are integrally formed. A chain body is sleeved on the wheel body, and a scraper is connected to the chain body. The scraper is connected to the chain body through a mounting plate. An avoidance step is provided at the end of the wheel body away from the limiting wheel rim. The outer wall of the avoidance step is not connected to the outer wall of the wheel body. The height of the avoidance step matches the mounting plate to ensure that there is no contact when the mounting plate moves.

[0006] Preferably, the outer wall of the wheel body is provided with a chain groove, and the distance between the chain groove and the limiting wheel edge and the avoidance step is greater than half the width of the chain link on the chain body.

[0007] Preferably, the chain groove includes an annular arc-shaped bottom, an annular positioning groove, and a second chamfer connected in sequence.

[0008] Preferably, the wheel body has a shaft hole at its center, a keyway on one side of the shaft hole, and a first chamfer at the end of the shaft hole away from the limiting wheel edge.

[0009] Preferably, the outer diameter of the avoidance step is 120mm, and the distance L between the outer wall of the avoidance step and the outer wall of the wheel body is 20mm.

[0010] Preferably, the height H of the avoidance step is 46mm.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model relates to a tail wheel structure suitable for belt conveyor bottom sweepers. The precise dimensional design to avoid steps completely isolates the mounting plate from the wheel body, preventing contact and improving the scraper's passability. It solves the friction and jamming problem in traditional structures. The annular arc bottom of the chain groove fits snugly with the chain links, reducing bounce. The receiving groove restricts chain link displacement, indirectly fixing the scraper's working position. The first chamfer of the shaft hole simplifies shaft installation, and the second chamfer of the chain groove reduces the difficulty of chain link engagement. Avoiding steps reduces material usage while ensuring wheel body strength, lowers rotational inertia, and achieves energy efficiency. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the tail pulley of a belt conveyor bottom cleaner in the prior art;

[0014] Figure 2 This is an assembly drawing of the belt conveyor bottom cleaning machine of this utility model;

[0015] Figure 3 This is a structural diagram of the tail pulley of the belt conveyor bottom cleaner of this utility model;

[0016] Figure 4 This is a structural diagram of the wheel body of this utility model;

[0017] Figure 5 This is a cross-sectional view of the wheel body of this utility model.

[0018] In the diagram: 1. Wheel body; 11. Shaft hole; 111. First chamfer; 12. Keyway; 13. Chain groove; 131. Annular arc bottom; 132. Annular positioning groove; 133. Second chamfer; 14. Clearance step; 2. Limit wheel edge; 3. Chain body; 31. Extension rod; 4. Scraper; 41. Mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0021] Combination Figures 2-5This utility model discloses a tail wheel structure suitable for a belt conveyor bottom sweeper, comprising a wheel body 1 and a limiting wheel edge 2 fixedly connected to the end of the wheel body 1. The limiting wheel edge 2 has a thickness of 12mm and a diameter of 220mm. The limiting wheel edge 2 provides rigid protection for the chain body 3, preventing external environmental interference with the movement of the chain body 3. A shaft hole 11 with a diameter of 60mm is provided at the center of the wheel body 1. A keyway 12 is provided on one side of the shaft hole 11, and a first chamfer 111 is provided at the end of the shaft hole 11 away from the limiting wheel edge 2. The first chamfer 111 has a size of 2×45. °, to facilitate the installation of the shaft into the shaft hole 11, a chain groove 13 is provided on the outer wall of the wheel body 1. The chain groove 13 includes an annular arc bottom 131, an annular positioning groove 132 and a second chamfer 133 connected in sequence. The annular arc bottom 131 is a circular ring structure with a radius of 10mm. The width of the annular positioning groove 132 is adapted to the width of the annular arc bottom 131 and can accommodate the chain links on the chain body 3. The annular positioning groove 132 connects the annular arc bottom 131 and the second chamfer 133. The size of the second chamfer 133 is 5×45°, which facilitates the chain links on the chain body 3 to fall into the annular positioning groove 132.

[0022] Specifically, such as Figure 3 As shown, when the wheel body 1 rotates, the lower edge of the vertically arranged chain link on the chain body 3 engages with the chain groove 13. The second chamfer 133 facilitates the alignment and assembly of the chain body 3. At the same time, the wheel body 1 is positioned on both sides of the chain groove 13 with a safety distance greater than half the width of the chain link on the chain body 3. The horizontally arranged chain link on the chain body 3 moves in contact with the surface of the wheel body 1. The chain groove 13 restricts the position of the chain body 3, which indirectly restricts the end position of the scraper 4. A mounting plate 41 is provided on one side of the scraper 4. An extension rod 31 is provided on the chain body 3. The extension rod 31 is connected to the mounting plate 41 by bolts. The width of the mounting plate 41 is greater than that of the extension rod 31.

[0023] like Figure 1 As shown, in the prior art, since the structure of the wheel body 1 is a single piece, the mounting plate 41 will rub against the wheel body 1, or even get stuck, affecting the use of the scraper 4.

[0024] It should be noted that an avoidance step 14 is provided at the end of the wheel body 1 away from the limiting wheel edge 2. The outer diameter of the avoidance step 14 is 120mm, the distance L between the outer wall of the avoidance step 14 and the outer wall of the wheel body 1 is 20mm, and the height H of the avoidance step 14 is 46mm. The setting of the avoidance step 14 reduces the diameter of the end of the wheel body 1, which is compatible with the width of the mounting plate 41. When the chain body 3 moves in contact with the wheel body 1, the mounting plate 41 never contacts the wheel body 1, thus avoiding friction.

[0025] Working process: The chain body 3 engages with the chain groove 13 of the wheel body 1 through the chain links. The vertical chain links are engaged in the ring-shaped mounting groove 132, and the horizontal chain links slide along the surface of the wheel body 1. The chain body 3 drives the scraper 4 to move through the extension rod 31. The mounting plate 41 moves accordingly, avoiding the step 14 to reduce the diameter of the end of the wheel body 1, ensuring that the mounting plate 41 does not contact the wheel body 1 during the movement to avoid friction. The second chamfer 133 guides the chain links to smoothly enter the chain groove 13, and the limiting wheel edge 2 blocks external foreign objects from interfering with the chain movement.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof 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.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A tail wheel structure suitable for a belt conveyor bottom sweeper, comprising a wheel body (1) and a limiting wheel edge (2), characterized in that, The wheel body (1) and the limiting wheel edge (2) are integrally formed. The chain body (3) is sleeved on the wheel body (1). The scraper (4) is connected to the chain body (3). The scraper (4) is connected to the chain body (3) through the mounting plate (41). The end of the wheel body (1) away from the limiting wheel edge (2) is provided with a clearance step (14). The height of the clearance step (14) matches the mounting plate (41).

2. The tail pulley structure for a belt conveyor bottom sweeper according to claim 1, characterized in that, The outer wall of the wheel body (1) is provided with a chain groove (13). The distance between the chain groove (13) and the limiting wheel edge (2) and the avoidance step (14) is greater than half the width of the chain link on the chain body (3).

3. The tail pulley structure for a belt conveyor bottom sweeper according to claim 2, characterized in that, The chain groove (13) includes an annular arc bottom (131), an annular positioning groove (132), and a second chamfer (133) connected in sequence.

4. The tail pulley structure for a belt conveyor bottom sweeper according to claim 1, characterized in that, The wheel body (1) has a shaft hole (11) at its center, a keyway (12) on one side of the shaft hole (11), and a first chamfer (111) is provided at the end of the shaft hole (11) away from the limiting wheel edge (2).

5. The tail pulley structure for a belt conveyor bottom sweeper according to claim 1, characterized in that, The outer diameter of the avoidance step (14) is 120mm, and the distance L between the outer wall of the avoidance step (14) and the outer wall of the wheel body (1) is 20mm.

6. The tail pulley structure for a belt conveyor bottom sweeper according to claim 1, characterized in that, The height H of the avoidance step (14) is 46mm.

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