CN112047048A - Conveyor belt deviation correction mechanism in belt conveyor - Google Patents

Abstract

The invention discloses a conveying belt deviation correcting device in a belt conveyor, wherein a carrier roller assembly is supported on a central rotating shaft and can rotate around the central rotating shaft; arranging the vertical roller on a sliding block in sliding fit with the transverse guide rail, and pushing the vertical roller to move outwards along the transverse guide rail by the deflected belt; the three-rod structure transmits the transverse displacement to the carrier roller assembly and pushes the carrier roller assembly to rotate around the central rotating shaft by a deviation correcting angle at the corresponding side, and the friction force generated between the deflection of the carrier roller and the belt is utilized to push the belt to reset, so that the deviation correction is realized.

Description

Conveyor belt deviation correction mechanism in belt conveyor

technical field

The invention relates to a conveyor belt deviation correction device applied in a belt conveyor.

Background technique

The belt conveyor is mainly composed of frame, conveyor belt, idler, roller, tensioning device, transmission device and deviation correction device. The conveyor belt moves by the friction between the idler and the roller, and the deviation correction device is usually the vertical roller and the deviation correction wheel set on both sides. Belt conveyors are widely used in coal mine production and grain processing industries, and are used in parts assembly, testing, packaging and transportation.

During the operation of the belt conveyor, there is inevitably the problem of the deviation of the conveyor belt, which will cause poor operation, reduce work efficiency, affect normal operation, and may even cause fire accidents; there are many reasons for the deviation of belt conveyors, mainly Including: in equipment maintenance, the roller and the joint are in a non-parallel state, resulting in inconsistent running speeds on both sides of the conveyor belt, and the conveyor belt deviates to the side with relatively large tension; parts wear, parts failure and The drum inclusions are not maintained in time, and the tension on both sides is not equal to cause deviation; the weight of the material on the conveyor belt will also cause deviation.

In the prior art, for the deviation of the conveyor belt, a correction mechanism is usually provided with a driving force provided by a motor or a hydraulic mechanism. aggravated further.

SUMMARY OF THE INVENTION

In order to avoid the above-mentioned shortcomings of the prior art, the present invention provides a conveyor belt deviation correction device in a belt conveyor, which does not need to use external force mechanisms such as motors and hydraulic devices to achieve deviation correction, especially when the belt is slightly deflected. Immediately trigger deviation correction to avoid further aggravation of deviation, and prevent excessive deviation from damaging belts and other mechanical structures.

The present invention adopts the following technical scheme for solving the technical problem:

The structural features of the conveyor belt deviation correction device in the belt conveyor of the present invention include:

The idler support mechanism supports the roller shaft used for installing the roller on the movable bracket at both ends with end bearings respectively to form an idler assembly, and the belt is transmitted by the rotatable roller in the idler assembly by friction force; A fixed base is provided, and the idler assembly is supported on a fixed base supported by a vertical central rotating shaft, and can rotate around the central rotating shaft; on the fixed base, on both sides of the central rotating shaft, arc-shaped rails are symmetrically arranged , a downwardly overhanging linkage bracket is fixedly connected to the bottom surface of the movable bracket, and a roller is installed at the bottom of the linkage bracket, and the roller is supported in the arc-shaped rail and is rolled and matched with the arc-shaped rail;

The deviation detection mechanism is located symmetrically on both sides of the conveyor. The bottom end of the vertical roller shaft of the vertical roller is fixed on the slider, and the slider is slidably matched with the lateral guide rail. The vertical roller can form a lateral displacement along the lateral guide rail toward the outside;

The deflection rectification link mechanism is used to transmit the lateral displacement to the idler assembly, and push the idler assembly on the corresponding side to rotate around the central axis through a deflection rectification angle.

The structural feature of the conveyor belt deviation correction device in the belt conveyor of the present invention is also that: the deviation correction link mechanism is set as a force-increasing link, and a three-bar structure is formed by a driving rod, an execution rod and a connecting rod. The first ends of each rod in the rod structure are articulated together, the driving rod is in a position parallel to the transverse guide rail, the second end of the driving rod is hinged with the slider, and is laterally linked with the slider. The second end is hinged in the middle of the linkage bracket, and is used to drive the idler assembly to rotate around the central axis through the linkage bracket; the second end of the connecting rod is hinged on the connecting rod bracket, and the connecting rod bracket is fixedly arranged on the conveyor At the corresponding position of the frame, the drive rod and the connecting rod form an obtuse angle.

The structural characteristics of the conveyor belt deviation correction device in the belt conveyor of the present invention are also that: the end bearing adopts a deep groove ball bearing, the end bearing is supported on the end bearing seat, and the end bearing seat is fixed Mounted on the movable stand.

The structural feature of the conveyor belt deviation correction device in the belt conveyor of the present invention is also that: the central rotating shaft is supported by thrust cylindrical roller bearings at the upper and lower ends, and the thrust cylindrical roller bearings at the upper and lower ends are respectively arranged at corresponding positions. in thrust cylindrical roller housings.

The structural characteristics of the conveyor belt deviation correction device in the belt conveyor of the present invention are also that: the lateral guide rail is fixedly arranged on the corresponding position of the conveyor frame by the guide rail bracket; the linkage bracket is a "Y" with an opening facing downward. Type bracket, the roller is installed in the bottom opening of the linkage bracket by the roller shaft, and the top of the linkage bracket is fixedly connected with the movable bracket.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

1. In the present invention, an idler assembly is provided, and the rotation of the idler assembly around the central axis is used to achieve deviation correction, and the adjustment process is very flexible and convenient; the vertical roller is used for deviation detection, and the deviation correction process is timely and accurate; There is no need to rely on external force mechanisms such as motors and hydraulic devices; it greatly simplifies system settings, facilitates maintenance, and is easy to implement;

2. In the present invention, the deflection rectification link mechanism is set as a force booster link. Due to the conversion of the main power, the deflection correction process is in the form of force increase, and in normal operation, it is in the form of force reduction, which ensures the stability of the normal operation of the idler.

3. In the present invention, the deviation correction is arranged at the end, and the deviation mainly occurs at the end during the belt conveying process, and it is more efficient and reliable to use the end deviation correction;

4. The present invention maintains a stable deviation correction process by setting the arc-shaped rail, the linkage bracket and the roller to ensure the correct deviation position is accurate.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention

Fig. 2 is the front view structure schematic diagram of the present invention;

Fig. 3 is a side view structural schematic diagram of the present invention;

Fig. 4 is the top view structure schematic diagram of the present invention;

5 is a schematic diagram of the coordination between the linkage bracket and the three-bar structure in the present invention;

FIG. 6 is a schematic diagram of the matching structure of the linkage bracket and the arc track in the present invention;

7 is a schematic diagram of the lateral displacement of the vertical roller in the present invention;

Labels in the figure: 1 fixed base, 2 movable bracket, 3 roller, 4 end bearing seat, 5 end bearing, 6 thrust cylindrical roller bearing seat, 7 linkage bracket, 8 arc track, 9 vertical stick, 10 drive Rods, 11 executive rods, 12 connecting rods, 13 thrust cylindrical roller bearings, 14 central shafts, 15 rollers, 16 roller shafts, 17 link brackets, 18 lateral guide rails, 19 guide rail brackets, 20 sliders, 21 belts.

Detailed ways

In the present embodiment, the conveyor belt deviation correction device in the belt conveyor includes:

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the roller support mechanism supports the roller shaft used for installing the roller 3 on the movable bracket 2 at both ends with end bearings 5 respectively to form the roller assembly , the belt 1 is transmitted by the rotatable drum 3 in the idler assembly by friction; a fixed base 1 is set, and the idler assembly is supported on the fixed base 1 by the vertical central shaft 14, and can rotate around the central shaft 14 Rotation; on the fixed base 1, on both sides of the central rotating shaft 14 are symmetrically provided with arc-shaped rails 8, on the bottom surface of the movable bracket 2 is fixedly connected with a downwardly overhanging linkage bracket 7, and the bottom of the linkage bracket 7 is installed with rollers 15. The rollers 15 are supported in the arc-shaped track 8, and are in rolling fit with the arc-shaped track 8.

As shown in Figures 1 and 7, the deviation detection mechanism is symmetrically located on both sides of the conveyor. , when the belt 21 which is deviated touches the vertical roller 9 , the vertical roller 9 can form a lateral displacement amount toward the outside along the lateral guide rail 18 .

As shown in Figures 1 and 2, the rectification link mechanism uses the rectification link mechanism to transmit the lateral displacement to the idler assembly, and pushes the idler assembly on the corresponding side to rotate around the central axis 14 through a deviation correction angle.

As shown in FIG. 1 , FIG. 4 and FIG. 5 , in this embodiment, the deflection correction link mechanism is set as a force-increasing link, and a three-bar structure is formed by a driving rod 10 , an execution rod 11 and a connecting rod 12 . The first ends of the rods are articulated together, the driving rod 10 is in a position parallel to the transverse guide rail 18, the second end of the driving rod 10 is hinged with the slider 20, and is laterally linked with the slider 20, and the second end of the rod 11 is executed. The end is hinged in the middle of the linkage bracket 7, and is used to drive the idler assembly to rotate around the central axis 14 through the linkage bracket 7; the second end of the connecting rod 12 is hinged on the connecting rod bracket 17, and the connecting rod bracket 17 is fixed on the conveyor. At the corresponding position of the frame, the drive rod 11 and the connecting rod 12 form an obtuse angle.

In specific implementation, corresponding measures also include:

As shown in FIG. 1 and FIG. 3 , the end bearing 5 adopts a deep groove ball bearing, the end bearing 5 is supported on the end bearing seat 4 , and the end bearing seat 4 is fixedly installed on the movable bracket 2 .

As shown in FIG. 2 and FIG. 4 , the central shaft 14 is supported by thrust cylindrical roller bearings 13 at the upper and lower ends, and the thrust cylindrical roller bearings 13 at the upper and lower ends are respectively arranged in the thrust cylindrical roller bearing seats 6 at corresponding positions.

As shown in Fig. 1 and Fig. 2, the transverse guide rail 18 is fixedly arranged on the corresponding position of the conveyor frame by the guide rail bracket 19;

As shown in Figures 5 and 6, the linkage bracket 7 is a "Y"-shaped bracket with an opening facing downward, the roller 15 is installed in the bottom opening of the linkage bracket 7 by the roller shaft 16, and the top of the linkage bracket 7 is fixed to the movable bracket 2 link.

The idler assembly falls on the central rotating shaft 14, and the arc-shaped rail 8 acts as an auxiliary rotation to make the rotation of the idler assembly more stable;

The relative length of each rod in the three-rod structure can be adjusted, so as to change the driving force for the idler assembly and adjust the deviation correction sensitivity.

When the belt gap touches the vertical roller 9 on one side and generates a lateral thrust on the vertical roller 9, the sliding block 20 slides outward along the lateral guide rail 18 to generate lateral displacement, and the main force acts on the first drive rod 10 in the three-bar structure. At the two ends, the three-bar structure is formed in the form of increasing force, so as to push the idler assembly to rotate through the linkage bracket 7 until the displacement of the vertical roller 9 stops, and the idler assembly is locked at the rotated angular position. The frictional force generated between the deflection and the belt pushes the belt to reset to achieve deflection correction.

When the belt is normally transmitted, it does not touch the vertical roller 9, and the main force acts on the second end of the actuator rod 11 in the three-bar structure, so that the three-bar structure forms a force-reducing form, and with the action of friction, the idler assembly is locked. The fixed base 1 cannot rotate freely, which ensures the stability of the belt transmission.

Claims (5)

1. a conveyor belt deviation correction device in a belt conveyor is characterized in that comprising: The idler support mechanism supports the roller shaft for installing the roller (3) on the movable bracket (2) at both ends by means of end bearings (5) to form an idler assembly, and the belt (1) is supported by the idler assembly. The rotatable roller (3) is used for transmission by friction; a fixed base (1) is provided, and the idler assembly is supported on the fixed base (1) by a vertical central shaft (14), and can rotate around the central shaft. (14) Rotation; curved rails (8) are symmetrically arranged on both sides of the central rotating shaft (14) on the fixed base (1), and are fixedly connected to the bottom surface of the movable bracket (2). A linkage bracket (7) extending downward, a roller (15) is installed at the bottom of the linkage bracket (7), the roller (15) is supported in the arc-shaped rail (8), and is connected with the arc-shaped rail (8) rolling fit; The deviation detection mechanism, located symmetrically on both sides of the conveyor, is to fix the bottom end of the vertical roller shaft of the vertical roller (9) on the slider (20), and the slider (20) slides with the lateral guide rail (18) In cooperation, when the belt (21) that is deviated is against the vertical roller (9), the vertical roller (9) can form a lateral displacement amount toward the outside along the lateral guide rail (18); The deflection rectification link mechanism is used to transmit the lateral displacement to the idler assembly, and push the idler assembly to rotate around the central axis (14) through a deflection rectification angle on the corresponding side. 2. The device for correcting the deviation of the conveyor belt in the belt conveyor according to claim 1, wherein the deviation correction link mechanism is set as a force-increasing link, and is composed of a driving rod (10), an execution rod (11) ) and the connecting rod (12) form a three-rod structure, the first ends of each rod in the three-rod structure are articulated together, the driving rod (10) is in a position parallel to the transverse guide rail (18), and the driving rod The second end of (10) is hinged with the slider (20), and is laterally linked with the slider (20). The support (7) drives the idler assembly to rotate around the central axis (14); the second end of the connecting rod (12) is hinged on the connecting rod support (17), and the connecting rod support (17) is fixedly arranged on the conveying rod (17). At the corresponding position of the machine frame, the drive rod (11) and the connecting rod (12) form an obtuse angle. 3. The conveyor belt deviation correction device in a belt conveyor according to claim 1, wherein the end bearing (5) adopts a deep groove ball bearing, and the end bearing (5) is supported at the end The end bearing seat (4) is fixedly mounted on the movable bracket (2). 4. The device for correcting the deviation of the conveyor belt in the belt conveyor according to claim 1, wherein the central shaft (14) is supported by thrust cylindrical roller bearings (13) at the upper and lower ends. The end thrust cylindrical roller bearings (13) are respectively arranged in the thrust cylindrical roller bearing seats (6) at corresponding positions. 5. The device for correcting the deviation of the conveyor belt in the belt conveyor according to claim 1, wherein the lateral guide rail (18) is fixedly arranged on the corresponding position of the conveyor frame by the guide rail bracket (19); The linkage bracket (7) is a "Y"-shaped bracket with an opening facing downward, the roller (15) is installed in the bottom opening of the linkage bracket (7) by the roller shaft (16), and the top of the linkage bracket (7) is connected to the movable The bracket (2) is fixedly connected.

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