CN105936405A - Tensioning device of belt type conveyor - Google Patents

Abstract

The invention discloses a tensioning device of a belt conveyor, and belongs to the mechanical field of transmission. The device comprises a rack, slide plates, a roller, a first elastic element, a pushing plate, a second elastic element, a first cam, a control box and a slide contact head, wherein when relatively great load appears on a conveyor belt, the first slide plate and the second slide plate laterally slide, so that the first elastic element is further compressed; the slide contact head slides and a circuit of the control box is accessed for rotating the cams; by virtue of the second elastic element, the pushing plate moves towards one side away from the slide plates; the control box is horizontally moved towards one side of each cam, so that the cams continuously rotate and amount of compression of the second elastic element is continuously reduced, and therefore, the first elastic element pushes the slide plates to slide to proper positions; when load on the conveyor belt is reduced, the slide contact head is connected with the circuit of the control box, so that the cams reversely rotate, the second elastic element is compressed, and the slide plates are pushed to slide towards one side of the first elastic element, and therefore, regulation on degree of tightness of the conveyor belt is realized.

Description

Belt conveyor tensioning device

technical field

The invention relates to the field of transmission machinery, in particular to a belt conveyor tensioning device.

Background technique

A conveyor is a material handling machine that continuously conveys materials on a certain route, also known as a continuous conveyor. The conveyor can carry out horizontal and inclined conveying, and can also form a space conveying line, and the conveying line is generally fixed. Due to the large conveying capacity and long transport distance of the conveyor, it can also complete several process operations at the same time during the conveying process, so it is widely used.

Most of the existing conveyors are belt conveyors, that is, by placing the materials on the conveyor belt, the motor rotates to drive the conveyor belt to move, and the materials are transported to the designated position. In order to ensure the smooth transportation of materials, the conveyor belt should be as tight as possible so that the conveyor belt is approximately in a flat state. In the actual transportation process, due to the different loads, the degree of bending of the conveyor belt will also be different, so the degree of tensioning is also different. When materials with high gravity are placed on the conveyor belt, it is necessary to The conveyor belt is further tensioned, and when the heavy material leaves the conveyor belt, the conveyor belt needs to be released.

At present, tensioning wheels are usually used to adjust the tension degree of the conveyor belt. When adjusting the tensioning wheel, it is not only time-consuming and laborious, but also the conveyor belt cannot be adjusted quickly, which reduces the production efficiency.

Contents of the invention

In order to solve the problems existing in the prior art, an embodiment of the present invention provides a tensioning device for a belt conveyor. Described technical scheme is as follows:

An embodiment of the present invention provides a tensioning device for a belt conveyor, the device comprising:

frame;

The sliding plate includes a first sliding plate and a second sliding plate, the first sliding plate and the second sliding plate are horizontally slidingly installed in the frame respectively, and the first sliding plate and the second sliding plate The sliding plates are arranged parallel to each other;

a roller, the two ends of the rotating shaft of the roller are respectively vertically installed on the first sliding plate and the second sliding plate through bearings;

a first elastic element, the first elastic element can be telescopically arranged between the sliding plate and the frame along the sliding direction of the sliding plate;

a push plate, the push plate is horizontally slidably installed in the frame, and the push plate and the first elastic element are located on opposite sides of the slide plate;

a second elastic element, the second elastic element is sandwiched between the sliding plate and the pushing plate in a telescopic manner along the sliding direction of the sliding plate;

The first cam, the first cam is rotatably arranged in the frame through the shaft, the rim of the first cam abuts against the push plate, and the second elastic element and the first a cam is arranged on opposite sides of the push plate;

a gear, the gear is sleeved on the shaft, and the gear is arranged coaxially with the shaft;

motor;

an output gear, the output gear is sleeved on the rotating shaft of the motor, and the output gear meshes with the gear;

a sliding contact, one end of the sliding contact is fixedly connected to the first sliding plate;

A control box for controlling the rotation of the motor, the control box is arranged on the frame at a position corresponding to the other end of the sliding contact.

Preferably, the device includes two push plates, and the two push plates are respectively set corresponding to the first sliding plate and the second sliding plate, and the device also includes a second cam, and the second The shape of the cam is the same as the shape of the first cam, the second cam is sleeved on the shaft, the first cam and the second cam are set in one-to-one correspondence with the push plate, and the first cam The rim of the first cam and the rim of the second cam abut against the corresponding push plate respectively.

Further, two second elastic elements are arranged at intervals between the first sliding plate and the corresponding pushing plate, and the second sliding plate and the corresponding pushing plate are also arranged at intervals There are two said second elastic elements.

Furthermore, the gear is disposed between the first cam and the second cam, and the distance from the gear to the first cam is consistent with the distance from the gear to the second cam.

Optionally, the gear is disposed between the first cam and the second cam, and the distance from the gear to the first cam is consistent with the distance from the gear to the second cam.

Preferably, two first elastic elements are arranged at intervals between the first sliding plate and the frame, and two elastic elements are also arranged at intervals between the second sliding plate and the frame. Describe the first elastic element.

Optionally, the first elastic element is a spring, and the second elastic element is a spring.

Preferably, the bearing is a cylindrical roller bearing.

Optionally, the control box is a forward and reverse switch.

Preferably, the frame is provided with fixing holes for fixing the frame.

The beneficial effect brought by the technical solution provided by the embodiment of the present invention is: by pressing the rim of the first cam against one end surface of the push plate, the first elastic element and the second elastic element are compressed, and the two sides of the rotating shaft of the drum are compressed. The ends are installed vertically on the first sliding plate and the second sliding plate respectively through bearings. When a large load appears on the conveyor belt, the first sliding plate and the second sliding plate slide sideways, so that the first elastic element is further compressed, The sliding contact slides, the circuit of the control box is connected to make the motor rotate, the cam rotates through the gear transmission, the second elastic element moves the push plate to the side away from the sliding plate, and the control box is translated to the side of the cam to make the cam continue to move. Rotate, the compression amount of the second elastic element continues to decrease, so that the first elastic element pushes the sliding plate to slide to a suitable position to tighten the conveyor belt. When the load on the conveyor belt becomes smaller, the sliding contact connects the circuit of the control box The cam is reversed, the second elastic element is compressed, and the sliding plate is pushed to slide to the side of the first elastic element, thereby realizing the adjustment of the tightness of the conveyor belt.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural view of a belt conveyor tensioning device provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the belt conveyor tensioning device shown in Fig. 1 .

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a belt conveyor tensioning device provided by an embodiment of the present invention, and Fig. 2 is a schematic diagram of the internal structure of the belt conveyor tensioning device shown in Fig. 1 , with reference to Fig. 1 and Fig. 1, the The device comprises a frame 1, a slide plate, a roller 22, a first elastic element 4a, a push plate 7, a second elastic element 4b, a first cam 32a, a gear 31, a motor 6, an output gear 61, and is used to control the rotation of the motor 6. The control box 5 and the sliding contact 51 used to connect the circuit of the control box 5, the sliding plate includes a first sliding plate 2a and a second sliding plate 2b, and the first sliding plate 2a and the second sliding plate 2b are respectively horizontally slidably mounted on In the frame 1, the first sliding plate 2a and the second sliding plate 2b are arranged parallel to each other; the two ends of the rotating shaft of the drum 22 are respectively vertically installed on the first sliding plate 2a and the second sliding plate 2b through bearings 21; the first elastic The element 4a is telescopically interposed between the sliding plate and the frame 1 along the sliding direction of the sliding plate; the pushing plate 7 is horizontally slidably installed in the frame 1, and the pushing plate 7 and the first elastic element 4a are located opposite to the sliding plate Both sides; the second elastic element 4b can be telescopically arranged between the sliding plate and the pushing plate 7 along the sliding direction of the sliding plate; the first cam 32a is rotatably arranged in the frame 1 through the shaft 3, and the first cam 32a The rim of the wheel is attached to the push plate 7, and the second elastic element 4b and the first cam 32a are arranged on the opposite sides of the push plate 7; the gear 31 is sleeved on the shaft 3, and the gear 31 is coaxial with the shaft 3 Setting; the output gear 61 is sleeved on the rotating shaft of the motor 6, and the output gear 61 meshes with the gear 31; one end of the sliding contact 51 is fixedly connected to the first sliding plate 2a, and the control box 5 is arranged on the frame 1 corresponding to the sliding contact The position of the other end of the head 51.

When the conveyor belt is unloaded, the sliding plate is at the middle position of the slidable range, at this time the first elastic element 4a and the second elastic element 4b are both in the compressed state, and the first cam 32a is at the middle position of the stroke.

The beneficial effect brought by the technical solution provided by the embodiment of the present invention is: by pressing the rim of the first cam against one end surface of the push plate, the first elastic element and the second elastic element are compressed, and the two sides of the rotating shaft of the drum are compressed. The ends are installed vertically on the first sliding plate and the second sliding plate respectively through bearings. When a large load appears on the conveyor belt, the first sliding plate and the second sliding plate slide sideways, so that the first elastic element is further compressed, The sliding contact slides, the circuit of the control box is connected to make the motor rotate, the cam rotates through the gear transmission, the second elastic element moves the push plate to the side away from the sliding plate, and the control box is translated to the side of the cam to make the cam continue to move. Rotate, the compression amount of the second elastic element continues to decrease, so that the first elastic element pushes the sliding plate to slide to a suitable position to tighten the conveyor belt. When the load on the conveyor belt becomes smaller, the sliding contact connects the circuit of the control box The cam is reversed, the second elastic element is compressed, and the sliding plate is pushed to slide to the side of the first elastic element, thereby realizing the adjustment of the tightness of the conveyor belt.

Preferably, as shown in FIG. 1, the device includes two push plates 7, and the two push plates 7 are respectively arranged corresponding to the first sliding plate 2a and the second sliding plate 2b. The device also includes a second cam 32b, and the second cam 32b The shape of the first cam 32a is the same as that of the first cam 32a. The second cam 32b is sleeved on the shaft 3. The first cam 32a and the second cam 32b are set in one-to-one correspondence with the push plate 7. The rim of the first cam 32a and the second The rims of the cams 32b abut against the corresponding push plates 7 respectively, and by setting the second cam 32b with the same shape as the first cam 32a, the first slide plate 2a and the second slide plate 2b can be simultaneously pushed to slide, so that The movement of the sliding plate is more stable, thereby ensuring the smooth movement of the drum 22 .

Preferably, two second elastic elements 4b are arranged at intervals between the first sliding plate 2a and the corresponding pushing plate 7, and two second elastic elements 4b are also arranged at intervals between the second sliding plate 2b and the corresponding pushing plate 7. The elastic element 4b can make the pushing plate 7 more stable when moving.

Correspondingly, two first elastic elements 4a are arranged at intervals between the first sliding plate 2a and the frame 1, and two first elastic elements 4a are also arranged at intervals between the second sliding plate 2b and the frame 1, This makes the first sliding plate 2a and the second sliding plate 2b more stable when sliding, thereby ensuring the smooth movement of the roller 22 .

Optionally, the first elastic element 4a may be a spring, and the second elastic element 4b may also be a spring.

Preferably, the gear 31 is arranged between the first cam 32a and the second cam 32b, and the distance from the gear 31 to the first cam 32a is consistent with the distance from the gear 31 to the second cam 32b, by making the gear 31 to the first cam 32a The distance to the second cam 32b is consistent with the distance to the second cam 32b. By setting the first cam 32a and the second cam 32b at the same time, the balance of the force on both ends of the shaft 3 can be ensured.

It is conceivable that, as shown in FIG. 1, power is transmitted between the motor 6 and the shaft 3 through the gear 31 and the output gear 61. In other embodiments, a multi-stage reduction mechanism may also be provided to reduce the speed of the shaft 3 and increase the speed of the shaft 3. Torque on axis 3.

1 and 2, the frame 1 is provided with a sliding groove 13 corresponding to the first sliding plate 2a and the second sliding plate 2b, the first sliding plate 2a and the second sliding plate 2b can slide along the sliding groove 13, and the first The sliding plate 2a and the second sliding plate 2b are respectively arranged in the sliding groove 13, so that the first sliding plate 2a and the second sliding plate 2b slide along the sliding groove 13 respectively, so that the first sliding plate 2a and the second sliding plate 2b Glides more smoothly.

It is conceivable that sliding grooves 13 may also be provided on the first sliding plate 2 a and the second sliding plate 2 b and matching sliding rails may be provided on the frame 1 at positions corresponding to the sliding grooves 13 .

Further, the control box 5 can be a forward-reverse switch, through which the forward and reverse control of the motor 6 is realized, thereby changing the direction of the first cam 32a and the second cam 32b, which is simple to implement and easy to replace.

Preferably, the bearing 21 is a cylindrical roller bearing. Since the roller 22 mainly carries radial loads, the cylindrical roller bearings are suitable for bearing large radial loads, and the selection of cylindrical roller bearings can prolong the life of the device.

Optionally, the frame 1 is provided with a fixed installation hole (not shown) for fixing the frame 1, and the fixed installation hole is provided on the frame 1, so that the device is fixedly installed in the production workshop or other workplaces, it is conceivable It is worth noting that the frame 1 can also be fixedly installed by welding or other methods, and the present invention is not limited thereto.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. a belt conveyor tensioning device, it is characterised in that described device includes:

Frame (1)；

Sliding panel, including the first sliding panel (2a) and the second sliding panel (2b), described first sliding panel (2a) It is slidably mounted in described frame (1) with described second sliding panel (2b) level respectively, and described first is sliding Dynamic plate (2a) and described second sliding panel (2b) are arranged in parallel；

Cylinder (22), the rotating shaft two ends of described cylinder (22) are vertically mounted on institute by bearing (21) respectively State on the first sliding panel (2a) and described second sliding panel (2b)；

First flexible member (4a), the direction that described first flexible member (4a) can be slided along described sliding panel Flexible is folded between described sliding panel and described frame (1)；

Promoting plate (7), described promotion plate (7) level is slidably mounted in described frame (1), and described Plate (7) is promoted to be positioned at, with described first flexible member (4a), the both sides that described sliding panel is contrary；

Second flexible member (4b), the direction that described second flexible member (4b) can be slided along described sliding panel Flexible is folded between described sliding panel and described promotion plate (7)；

First cam (32a), described first cam (32a) is rotatably arranged in described machine by axle (3) In frame (1), the wheel rim of described first cam (32a) abuts on described promotion plate (7), and described Two flexible members (4b) and described first cam (32a) are arranged on the both sides that described promotion plate (7) is contrary；

Gear (31), described gear (31) is set on described axle (3), and described gear (31) with Described axle (3) is coaxially set；

Motor (6)；

Output gear (61), described output gear (61) is set in the rotating shaft of described motor (6), institute State output gear (61) to engage with described gear (31)；

Slider (51), one end of described slider (51) is fixedly connected on described first sliding panel (2a) On；

For controlling the control box (5) that described motor (6) rotates, described control box (5) is arranged on described The position of the other end of the upper corresponding described slider (51) of frame (1).

Device the most according to claim 1, it is characterised in that described device includes two pieces of described promotions Plate (7), two pieces of the most corresponding described first sliding panels (2a) of described promotion plate (7) and described second are slided Plate (2b) is arranged, and described device also includes the second cam (32b), the shape of described second cam (32b) Identical with the shape of described first cam (32a), described second cam (32b) is set in described axle (3) On, described first cam (32a) and described second cam (32b) and described promotion plate (7) one_to_one corresponding Arranging, the wheel rim of described first cam (32a) and the wheel rim of described second cam (32b) abut in respectively On corresponding described promotion plate (7).

Device the most according to claim 2, it is characterised in that described first sliding panel (2a) is with right Spaced between the described promotion plate (7) answered it is provided with two described second flexible members (4b), described The most spaced between second sliding panel (2b) and corresponding described promotion plate (7) it is provided with two described Two flexible members (4b).

Device the most according to claim 2, it is characterised in that described gear (31) is arranged on described Between first cam (32a) and described second cam (32b), and described gear (31) is to described first The distance of cam (32a) is consistent with the distance of described gear (31) to described second cam (32b).

Device the most according to claim 1, it is characterised in that described frame (1) is upper corresponding described The position of the first sliding panel (2a) and the position of described second sliding panel (2b) are provided with sliding tray (13), Described first sliding panel (2a) and described second sliding panel (2b) can slide along described sliding tray (13).

Device the most according to claim 1, it is characterised in that described first sliding panel (2a) and institute Stating and spaced between frame (1) be provided with two described first flexible members (4a), described second slides The most spaced between plate (2b) and described frame (1) it is provided with two described first flexible members (4a).

Device the most according to claim 1, it is characterised in that described first flexible member (4a) is Spring, described second flexible member (4b) is also spring.

Device the most according to claim 1, it is characterised in that described bearing (21) is cylindrical roller Bearing.

Device the most according to claim 1, it is characterised in that described control box (5) is for opening along inverse Close.

Device the most according to claim 1, it is characterised in that described frame is provided with use on (1) Fixed installation hole in fixing described frame (1).