Electric spiral tensioning device for tail of belt conveyor

Abstract

The utility model relates to the technical field of rubber belt conveyors, in particular to a rubber belt conveyor tail electric spiral tensioning device which comprises a sliding frame, a fixing nut, a screw rod, a tail frame and a gear motor, the sliding frame comprises a U-shaped frame, a check block, a lower left baffle and a lower right baffle, sliding grooves are formed in the two sides of the tail frame, the U-shaped frame is arranged on the sliding grooves, and the check block is arranged on the lower left baffle. The U-shaped frame is fixedly connected with the left lower baffle and the right lower baffle at the bottom of the sliding groove and wraps the edge of the sliding groove together, and the U-shaped frame slides front and back on the sliding groove without tipping over. The gear motor is fixedly connected with one end of the screw rod, the gear motor rotates to drive the screw rod to rotate, the fixing nut moves back and forth along the screw rod, the U-shaped frame connected with the fixing nut is driven to move back and forth, the tensioning roller is tensioned or loosened, and the gear motor is fixedly installed on the machine tail frame. The tensioning roller is prevented from moving front and back, the accuracy of the fixing position of the tensioning roller is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, in particular to an electric spiral tensioning device at the tail of a belt conveyor. Background Art

[0002] Belt conveyors are widely used in short-distance transportation of coal. In order to ensure that the conveyor belt has sufficient tension and sufficient friction between the conveyor belt and the transmission roller, so that the conveyor belt does not slip, the belt conveyor is equipped with a conveyor belt tensioning device. The invention patent with publication number: CN112298926A discloses "an automatically controlled belt conveyor electric spiral tensioning device and method, including a driving roller and a driven roller, and also including an electric spiral tensioning device, the electric spiral tensioning device including: a tail frame (1), a first screw support end (2), a screw (3), a first nut seat (4), a second nut seat (5), a second screw support end (6), a coupling (7), a roller support (8) and a stepper motor (9), the first screw support end (2) and the second screw support end (6) are both connected to the tail frame (1), the first nut seat (4) and the second nut seat (5) are both connected to the roller support (8), the roller support (8) is connected to the central axis of the driven roller, the first nut seat (4) and the second nut seat (5) are set on the screw (3) through a threaded sleeve, the first screw support end (2) and the second screw support end (6) are movably set on the screw (3), and the screw (3) is connected to the output shaft of the stepper motor (9) through a coupling (7) ... ". The core of the intermediate transmission structure of the tensioning force of the tensioning device of the invention is the screw, from the roller support to the first nut seat and the second nut seat, to the screw, then to the screw support end, and finally to the tail frame. The intermediate transmission of the tensioning force is mainly concentrated on the screw, the screw is heavy and easy to wear, the tensioning roller is easy to move back and forth, and the fixed tensioning roller position is not accurate. Summary of the Invention

[0003] The utility model aims to provide an electric spiral tensioning device at the tail of a belt conveyor, improve the structure of the tensioning device, avoid the tensioning roller from moving back and forth, and improve the position accuracy and service life of the tensioning device.

[0004] The utility model is realized by the following technical scheme: an electric spiral tensioning device at the tail of a belt conveyor, comprising a slide, a fixing nut, a screw, a tail frame, and a reduction motor.

[0005] The slide includes a U-shaped frame, a stopper, a left lower baffle, and a right lower baffle. The U-shaped frame is fixedly connected to the central axis of the tensioning roller, and a fixing nut is installed on the lower side of the U-shaped frame.

[0006] The fixing nut is internally threaded, the screw is externally threaded, and the fixing nut and the screw are connected by internal and external threads;

[0007] The screw rod is movably sleeved in the support end 1 and the support end 2 which are fixedly connected to the two ends of the tail frame;

[0008] Slideways are provided on both sides of the tail frame, and the U-shaped frame is provided on the slideways. The U-shaped frame is fixedly connected to the left lower baffle and the right lower baffle at the bottom of the slideway, and together covers the edge of the slideway. The U-shaped frame slides back and forth on the slideway without tipping over.

[0009] The reduction motor is fixedly connected to one end of the screw rod. The rotation of the reduction motor drives the screw rod to rotate, and the fixing nut moves forward and backward along the screw rod, driving the U-shaped frame connected to the fixing nut to move forward and backward to tighten or loosen the tensioning roller. The reduction motor is fixedly installed on the tail frame.

[0010] Furthermore, the U-shaped frame is connected to the bottom of the left lower baffle and the right lower baffle by bolts along both sides of the slide groove.

[0011] Furthermore, a stopper is welded on the upper inner side of the U-shaped frame.

[0012] Furthermore, two vertical plates are welded on the lower left baffle for installing fixing nuts.

[0013] Furthermore, the upper portion of the U-shaped frame is connected to the tensioning roller via bolts passing through holes.

[0014] Furthermore, the screw end is a keyway structure and is connected to the reduction motor via a flat key block.

[0015] Furthermore, the reduction motor is mounted on the tail frame by bolts.

[0016] The utility model has the following advantages:

[0017] (1) The U-shaped frame of the utility model is fixedly connected to the left lower baffle and the right lower baffle at the bottom of the slide, and together they cover the edge of the slide. The force applied by the tensioning roller to the U-shaped frame is directly transmitted to the slide, that is, directly transmitted to the tail frame. The force transmitted by the tensioning roller on the screw is reduced, the wear of the screw is reduced, the tensioning roller is prevented from moving back and forth, the fixing position accuracy of the tensioning roller is improved, and the service life is extended.

[0018] (2) The utility model has a simple structure, is easy to install, disassemble and replace, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model

[0020] Figure 2 This is a schematic diagram of the cooperation between the utility model and the tensioning roller

[0021] Figure 3 This is a schematic diagram of the cooperation between the utility model and the tail frame

[0022] Figure 4 This is the left view of the utility model

[0023] In the figure: 1. Tensioning roller, 2. Slide, 3. Tail frame, 4. Fixing nut, 5. Screw, 6. Reducer motor, 21. U-shaped frame, 22. Stop block, 23. Lower left baffle, 24. Lower right baffle, 25. Slide, 31. Vertical plate, 32. Flat key block, 33. Support end one, 34. Support end two. DETAILED DESCRIPTION

[0024] Combined with attachment Figure 1-4 , the present invention is further described using preferred embodiments.

[0025] As attached Figure 1-4 As shown, an electric spiral tensioning device is provided on each of the central axes on both sides of the tensioning roller 1. The electric spiral tensioning device includes a slide 2, a fixing nut 4, a screw 5, a tail frame 3, and a reduction motor 6.

[0026] The carriage 2 includes a U-shaped frame 21, a stopper 22, a lower left baffle 23, and a lower right baffle 24. The U-shaped frame 21 is connected to the center axis of the tensioning drum 1 above by bolts through holes. The stopper 22 is welded on the upper side of the U-shaped frame to prevent the U-shaped frame from moving back and forth. Two vertical plates 31 are welded to the lower left baffle 23 on the lower side of the U-shaped frame 21. Two fixing nuts 4 are installed between the vertical plates 31.

[0027] The fixing nut 4 is an internal thread, the screw rod 5 is an external thread, and the fixing nut 4 and the screw rod 5 are connected by internal and external threads;

[0028] The screw rod 5 is movably sleeved in the support end 1 33 and the support end 2 34 fixedly connected to the two ends of the tail frame 3;

[0029] Slide grooves 25 are provided on both sides of the tail frame 3. The U-shaped frame 21 is provided on the slide grooves 25. The U-shaped frame 21 is bolted to the left lower baffle 23 and the right lower baffle 24 at the bottom of the slide groove 25, and together covers the edge of the slide groove 25. The U-shaped frame 21 slides back and forth on the slide groove 25 without tipping over. The U-shaped frame 21 directly transmits the force of the tensioning roller 1 along the slide groove 25 to the tail frame 3, reducing the load on the screw and reducing the wear of the screw.

[0030] The reduction motor 6 is bolted to the tail frame 3 to prevent vibration and reduce noise. The end of the screw 5 has a keyway structure, and the reduction motor 6 is connected to the screw 5 via a flat key block 32. The rotation of the reduction motor 6 drives the screw 5 to rotate, and the fixed nut 4 moves back and forth along the screw 5, driving the U-shaped frame 21 connected to the fixed nut 4 to move back and forth, tightening or loosening the tensioning drum 1 and accurately positioning the tensioning drum.

[0031] A through-hole bolt is a fastener typically consisting of a threaded rod, a nut, and a washer. The threaded rod is cylindrical and threaded, allowing it to be inserted through a pre-drilled hole in the connected components. A nut is screwed onto one end of the rod. Tightening the nut creates axial tension in the bolt, securing the connected components together. A washer is typically placed between the nut and the connected component to distribute pressure and prevent the nut from loosening. In mechanical manufacturing, it is used to connect components of various mechanical equipment, ensuring their proper operation and stability.

Claims

1. An electric spiral tensioning device at the tail of a belt conveyor, characterized in that: It includes a slide (2), a fixing nut (4), a screw (5), a tail frame (3), and a reduction motor (6). The slide (2) includes a U-shaped frame (21), a stopper (22), a left lower baffle (23), and a right lower baffle (24); the U-shaped frame (21) is fixedly connected to the central axis of the tensioning roller (1); and a fixing nut (4) is installed on the lower side of the U-shaped frame (21); The fixing nut (4) is an internal thread, the screw rod (5) is an external thread, and the fixing nut (4) and the screw rod (5) are connected via internal and external threads; The screw rod (5) is movably sleeved in a first support end (33) and a second support end (34) fixedly connected to both ends of the tail frame (3); Slide grooves (25) are provided on both sides of the tail frame (3), and the U-shaped frame (21) is provided on the slide groove (25). The U-shaped frame (21) is fixedly connected to the left lower baffle (23) and the right lower baffle (24) at the bottom of the slide groove (25), and together covers the edge of the slide groove (25). The U-shaped frame (21) slides forward and backward on the slide groove (25) but does not tip over. The reduction motor (6) is fixedly connected to one end of the screw rod (5). The reduction motor (6) rotates to drive the screw rod (5) to rotate, and the fixed nut (4) moves forward and backward along the screw rod (5), driving the U-shaped frame (21) connected to the fixed nut (4) to move forward and backward, tightening or loosening the tensioning roller (1). The reduction motor (6) is fixedly mounted on the tail frame (3).

2. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: The U-shaped frame (21) is connected to the bottom of the left lower baffle (23) and the right lower baffle (24) by bolts along both sides of the slide groove (25).

3. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: A stopper (22) is welded to the upper inner side of the U-shaped frame (21).

4. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: Two vertical plates (31) are welded to the left lower baffle (23), and a fixing nut (4) is installed between the two vertical plates (31).

5. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: The upper portion of the U-shaped frame (21) is connected to the tensioning roller (1) via bolts passing through holes.

6. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: The end of the screw (5) is a keyway structure, and the screw (5) is connected to the reduction motor (6) via a flat key block (32).

7. The electric spiral tensioning device at the tail of a belt conveyor according to claim 1, characterized in that: The reduction motor (6) is mounted on the tail frame (3) via bolts.

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