Deviation self-correcting device for small wide belt conveyor

Abstract

The utility model relates to the technical field of belt conveying, in particular to a deviation self-correcting device for a small wide belt conveyor. Comprising a driven bracket and a driving bracket fixed on a machine frame, a driving roller and a driven roller are arranged on the driving bracket and the driven bracket respectively, a belt is wound on the driving roller and the driven roller, the fixing plate is fixed on the machine frame and located below the driven bracket, and the middle of the bottom face of the driven bracket is rotationally connected with the fixing plate through a connecting piece. When deviation occurs, the driving roller and the driven roller are not parallel any more, the distances between the two ends of the driving roller and the two ends of the driven roller are not equal, the tension force borne by the tensioned side of the belt from the driving roller and the driven roller is larger than the tension force borne by the other side of the belt, and the tension force exerted by the belt on the driving roller and the driven roller is larger than the tension force borne by the other side of the belt. And the driving roller and the driven roller return to be parallel under the action of the tension of the belt, the structure is simple, the usability is high, and the manual adjustment process is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of belt transportation, in particular to a deviation self-correcting device for a small-width belt conveyor. Background Technique

[0002] A belt conveyor is a machine that transports materials by the endless movement of a belt. Belt deviation is the most common fault during the operation of a belt conveyor, and its harmfulness is extremely great. Belt deviation causes the system to stop operating, affecting production efficiency. Especially for a small-width belt conveyor with an overall length within five meters and a width of one meter or more, it is more difficult to control belt deviation. When the belt deviation reaches a certain degree, the belt will trigger an emergency stop device for anti-deviation, causing the operation system to stop and affecting the production process; it is easy to form potential safety hazards. Due to severe belt deviation, the belt may roll up materials, causing the belt to be stressed unilaterally beyond the longitudinal breaking force of the belt, thus causing safety hazards such as transverse tearing of the belt; it pollutes the environment and affects the quality of the transported materials. The materials often cause coal dust during spilling and cleaning, polluting the environment; at the same time, the material spilling also affects the quality of the transported goods. Moreover, in some enclosed environments, it is more difficult to manually adjust the belt deviation, and the operator needs to have considerable experience for manual adjustment. And even with manual adjustment, there may be errors, and the belt deviation will still occur after the conveyor has been working for a long time. Content of the Utility Model

[0003] The utility model aims to solve the above problems, and thus provides a deviation self-correcting device for a small-width belt conveyor that can self-correct during the process of belt deviation.

[0004] The technical solution adopted by the utility model to solve the above problems is:

[0005] A deviation self-correcting device for a small-width belt conveyor includes a driven bracket and a driving bracket fixed on a frame. A driving roller and a driven roller are respectively arranged on the driving bracket and the driven bracket. A belt is wound around the driving roller and the driven roller. The device further includes a fixing plate fixed on the frame and located below the driven bracket. The middle part of the bottom surface of the driven bracket is rotatably connected to the fixing plate through a connecting member.

[0006] The utility model adopting the above technical solution, compared with the prior art, has the prominent feature that:

[0007] When deviation occurs, the driving roller and the driven roller are no longer parallel. At this time, the distances between the two ends of the driving roller and the driven roller are not equal. The tension on the tightened side of the belt from the driving roller and the driven roller is greater than that on the other side. At this time, the pulling force of the belt acting on the driving roller and the driven roller is greater than that on the other side. Then, under the action of the belt pulling force, the driving roller and the driven roller return to parallel. The structure is simple and highly practical, eliminating the need for manual adjustment.

[0008] Preferably, a further technical solution of the present utility model is as follows:

[0009] Furthermore, on the top surface of the fixed plate close to one side of the driving roller and on both sides of the belt, limit blocks opposite to the driven bracket are symmetrically arranged.

[0010] Furthermore, the connecting member includes a pin shaft that movably penetrates the bottom surface of the driven bracket and the fixed plate. A slotted nut is sleeved below the lower part of the pin shaft and below the fixed plate. An opening pin is commonly inserted through the pin hole of the pin shaft and the slot of the slotted nut.

[0011] Furthermore, a wear-resistant washer is sleeved on the pin shaft between the driven bracket and the fixed plate.

[0012] Furthermore, limit flanges are respectively arranged at both ends of the drum of the driven roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic side sectional structure view of the driven roller in the embodiment of the present utility model;

[0014] Figure 2 It is a schematic front view structure view of the belt conveyor in the embodiment of the present utility model;

[0015] Figure 3 It is a schematic top view structure view of the belt conveyor in the embodiment of the present utility model;

[0016] The marks in the figure are: driven bracket 1, driving bracket 2, driving roller 3, driven roller 4, belt 5, fixed plate 6, limit block 7, pin shaft 8, slotted nut 9, opening pin 10, wear-resistant washer 11, limit flange 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described below in conjunction with embodiments. The purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0018] A self-aligning device for the deviation of a small wide-width belt conveyor, which includes a driven bracket 1 and a driving bracket 2 fixed on the frame. A driving roller 3 and a driven roller 4 are respectively arranged on the driving bracket 2 and the driven bracket 1. A belt 5 is wound around the driving roller 3 and the driven roller 4. It also includes a fixing plate 6 fixed on the frame and located below the driven bracket 1. The middle part of the bottom surface of the driven bracket 1 is rotationally connected to the fixing plate 6 through a connecting piece. When deviation occurs, since the lengths of both sides of the belt 5 are equal, at this time, the tension of the belt 5 on the tension side by the driving roller 3 and the driven roller 4 is greater than that on the other side of the belt 5. At this time, the pulling force of the belt 5 acting on the driving roller 3 and the driven roller 4 is also greater than that on the other side of the belt 5. At this time, under the action of the pulling force of the belt 5, the driving roller 3 and the driven roller 4 return to parallel. Vice versa. This device is mainly aimed at small wide-width belt conveyors with a total length of less than five meters and a length-width ratio of the belt conveyor not greater than five.

[0019] Further, on the top surface of the fixing plate 6 close to the driving roller 3 and on both sides of the belt 5, limit blocks 7 opposite to the driven bracket 1 are symmetrically arranged. When the belt 5 is narrow and long, it prevents the driven bracket 1 from rotating too much by accident and limits the rotation angle of the driven bracket 1. The limit blocks 7 make the rotatable angle of the driven bracket 1 within ±1°.

[0020] Further, the connecting piece includes a pin shaft 8 that movably penetrates the bottom surface of the driven bracket 1 and the fixing plate 6. A slotted nut 9 is sleeved below the lower part of the pin shaft 8 and below the fixing plate 6. An open split pin 10 is jointly penetrated through the pin hole of the pin shaft 8 and the slot of the slotted nut 9. After being fixed by the open split pin 10, the top of the slotted nut 9 does not lock the driven bracket 1, ensuring that the driven bracket 1 swings around the pin shaft 8.

[0021] Further, a wear-resistant washer 11 is sleeved on the pin shaft 8 between the driven bracket 1 and the fixing plate 6.

[0022] Further, taking a belt with a width of 1 m and a thickness of 3 mm as an example, the drum length of the driven roller 4 is 10 - 20 mm greater than the width of the belt 5. Limit flanges 12 are respectively arranged at both ends of the drum of the driven roller 4. The diameter of the limit flanges 12 is 20 - 30 mm greater than the diameter of the drum of the driven roller 4. The limit flanges 12 increase the limit function on both sides of the belt 5.

[0023] When deviation occurs, the driving roller 3 and the driven roller 4 are no longer parallel. At this time, the distances between both ends of the driving roller 3 and the driven roller 4 are not equal. The tension of the belt 5 on the tension side by the driving roller 3 and the driven roller 4 is greater than that on the other side. At this time, the pulling force of the belt 5 acting on the driving roller 3 and the driven roller 4 is greater than that on the other side. At this time, under the action of the pulling force of the belt 5, the driving roller 3 and the driven roller 4 return to parallel. The structure is simple and the usability is strong, eliminating the manual adjustment process.

[0024] The above are only the preferred and feasible embodiments of the present utility model, and thus do not limit the scope of rights of the present utility model. Any equivalent changes made by using the content of the specification and drawings of the present utility model are included within the scope of rights of the present utility model.

Claims

1. A small wide belt conveyor deviation self-correction device, comprising a driven bracket and an active bracket fixed on a frame, wherein the active bracket and the driven bracket are respectively provided with an active roller and a driven roller, and a belt is wound around the active roller and the driven roller, and characterized in that: It also includes a fixing plate which is fixed on the frame and located below the driven bracket. The middle part of the bottom surface of the driven bracket is rotatably connected to the fixing plate through a connecting piece.

2. The small-sized wide belt conveyor deviation self-calibration device according to claim 1 is characterized in that: Limiting blocks opposite to the driven bracket are symmetrically arranged on the top surface of the fixed plate close to the active roller and on both sides of the belt.

3. The small-sized wide belt conveyor deviation self-calibration device according to claim 1 is characterized in that: The connecting piece comprises a pin shaft which movably passes through the bottom surface of the driven bracket and the fixed plate, a slotted nut is sleeved on the lower part of the pin shaft and below the fixed plate, and a split pin is passed through the pin hole of the pin shaft and the slot of the slotted nut.

4. The small-sized wide belt conveyor deviation self-calibration device according to claim 3 is characterized in that: A wear-resistant washer is sleeved on the pin shaft and located between the driven bracket and the fixed plate.

5. The small-sized wide belt conveyor deviation self-calibration device according to claim 1 is characterized in that: Limiting flanges are respectively arranged at both ends of the cylinder of the driven roller.

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