Rapid belt loosening device of large belt conveyor

Abstract

The utility model provides a rapid belt loosening device of a large-scale belt conveyor, which comprises a first anti-skidding clamp, a second anti-skidding clamp, a movable pulley, a fixed pulley, a steel wire rope and a driving assembly, the first anti-skidding clamp and the second anti-skidding clamp respectively comprise an upper clamping plate and a lower clamping plate, and the upper clamping plates and the lower clamping plates are clamped on two sides of a belt through connecting pieces. Anti-sliding strips are arranged on the contact faces of the upper clamping plate and the lower clamping plate and the belt, the first anti-sliding clamp is clamped on the belt between the second driving roller and the third driving roller, the second anti-sliding clamp is clamped on the belt at the third driving roller and fixedly connected to the belt frame, the movable pulley is connected with the first anti-sliding clamp, and the fixed pulley is connected with the lower end of the belt frame. And one end of the steel wire rope is fixedly connected with the belt frame, and the other end of the steel wire rope is connected with the driving assembly. The rapid belt loosening device of the large-scale belt conveyor can shorten maintenance time, improve maintenance efficiency and safety, and can be repeatedly used.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt conveyors, in particular to a fast belt loosening device for a large belt conveyor. Background Art

[0002] In coal mining enterprises, a large amount of materials need to be transported by belt conveyors. Whether the belt conveyor can function properly directly affects the orderly progress of production. Therefore, its maintenance work is of vital importance. When replacing the driving roller, guide roller, support roller, unloading roller, tail roller, roller rubber coating, belt vulcanization and other maintenance work, the belt needs to be completely loosened. However, among various belt conveyors, large belt conveyors have wide belt widths, thick belts, long installation lengths, and heavy weight, so the workload of loosening the belt is very large. When loosening the belt, it is necessary to completely loosen the tail tensioner and install an anti-slip clamp on the head belt of the machine head. The anti-slip clamp has special lifting ports at both ends, and a 10T fall chain is hung on each end. The belt loosening operation is carried out by manually falling the chain. Especially for the upper belt, the large card and the fall chain are subjected to great force during use. Each time the card is used, it cannot meet the requirements for reuse and needs to be remade, resulting in material waste. Moreover, after the device is installed, it takes 4 people to take turns to fall the chain for 1 hour or even longer to loosen 1m of belt, which means the maintenance time is too long and the maintenance efficiency is low. The strength of the special large card cannot meet the requirements and it is seriously deformed during use, posing a huge safety hazard. Chinese utility model CN216763178U discloses a belt conveyor that can automatically adjust the tension of the belt, including a support base, support plates symmetrically connected at both ends of the top of the support base, and a transmission gear is provided between each two support plates. The outer surface of the two transmission gears is wrapped with a transmission belt. Existing belt adjustment devices are mostly suitable for small belt conveyors, and there is little research on belt loosening devices for large belt conveyors. Summary of the Invention

[0003] The technical problem solved by the utility model is that a belt loosening method for a large belt conveyor has the problems of large material waste, high manpower input, low maintenance efficiency and low safety.

[0004] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0005] Furthermore, the connecting parts are a screw, a sleeve and a nut. Upper holes passing through the upper and lower directions are respectively provided at both ends of the upper splint, and lower holes passing through the upper and lower directions are respectively provided at both ends of the lower splint. The screw is passed through the upper and lower holes, and nuts and sleeves are respectively provided at both ends. The sleeves and nuts are respectively fastened against the upper and lower splints.

[0006] Furthermore, the fixed end of the steel wire rope is connected to a belt frame near the third active roller.

[0007] Furthermore, the fixed pulley is connected to a belt frame near the third active roller.

[0008] Furthermore, the contact surface between the anti-slip strip and the belt is provided with a continuous concave-convex corrugated structure.

[0009] Furthermore, a plurality of connecting plates are provided at intervals on the outer side of the upper clamping plate of the first anti-slip clamp, which are used to connect with the movable pulley and make the position of the movable pulley adjustable.

[0010] Furthermore, the driving component is a winch, and when the winch is working, the belt conveyor runs at a slow speed at the same time.

[0011] The utility model has the following beneficial effects: the utility model has a large belt conveyor rapid belt loosening device that uses a motor to drive the active roller to loosen the belt. The belt is jogged to make it run slowly while the winch is jogged, so that sufficient friction is always maintained between the belt and the active roller to achieve the purpose of loosening the belt. Only one belt driver and one winch driver are required to work together, which shortens maintenance time, improves maintenance efficiency, and is highly safe. Moreover, the device can be used repeatedly for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 , Side view of the first anti-slip card of the quick belt loosening device of the large belt conveyor of the utility model.

[0013] Figure 2 , A front view of the first anti-slip clip of the quick belt loosening device for a large belt conveyor according to the utility model.

[0014] Figure 3 , Schematic diagram of the installation of the quick belt loosening device for a large belt conveyor of the utility model. DETAILED DESCRIPTION

[0015] To clearly illustrate the technical features of this solution, the solution is described below through specific implementation methods and in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without making any creative efforts should fall within the scope of protection of this utility model.

[0016] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0017] A fast belt loosening device for a large belt conveyor comprises a first anti-skid card 1, a second anti-skid card 2, a movable pulley 3, a fixed pulley 4, a steel wire rope, and a driving assembly.

[0018] like Figure 1 and 2 As shown, the first anti-slip clip 1 includes an upper plate 101 and a lower plate 102, which are clamped to the sides of the belt via connectors. The surfaces of the upper and lower plates 101, 102 that contact the belt are provided with embedded grooves, within which are located anti-slip strips 103. The surfaces of the anti-slip strips 103 that contact the belt have a continuously concave and convex corrugated structure. A connecting plate 107 is provided on the outer side of the upper plate 101. The connecting parts are a lead screw 104, a screw sleeve 105, and a nut 106. Upper holes are provided at both ends of the upper clamping plate 101, extending vertically therethrough. Lower holes are provided at both ends of the lower clamping plate 102, extending vertically therethrough. The lead screw 104 is inserted into the upper and lower holes, and a nut 106 and a screw sleeve 105 are provided at both ends. The screw sleeve 105 and the nut 106 are fastened against the upper and lower clamping plates, respectively. The second anti-slip clamp 2 has the same structure as the first anti-slip clamp 1, except that the connecting plate 107 of the second anti-slip clamp 2 is used to connect to the belt frame. Multiple connecting plates 107 are provided at intervals on the upper clamping plate 101 of the first anti-slip clamp 1, for connecting to the movable pulley 3 and making the position of the movable pulley 3 adjustable.

[0019] like Figure 3 As shown, the first anti-slip card 1 is clamped on the belt between the second active roller and the third active roller, the second anti-slip card 2 is clamped on the belt at the third active roller and fixedly connected to the belt frame, the movable pulley 3 is connected to the first anti-slip card 1, and the fixed pulley 4 is connected to the lower end of the belt frame. The fixed pulley 4 is located near the third active roller and is lower than the movable pulley 3. The wire rope passes through the wheel grooves of the fixed pulley 4 and the movable pulley 3 in sequence, connecting the two in a transmission manner. One end of the wire rope is fixed, and the other end is the driving end. The fixed end of the wire rope is connected to the upper part of the belt frame and is located near the third active roller. The driving end is connected to the drive assembly. The drive assembly is a winch. When the winch is working, the belt conveyor runs at a slow speed, so that sufficient friction is always maintained between the belt and the active roller, thereby loosening the belt.

[0020] The model of the underground centralized belt conveyor for large lanes is DTL140 / 160 / 3*710S, with a belt width of 1.4 meters, a belt thickness of 24mm, and an installed length of 3200 meters, of which 1000 meters is a 7° uphill lane. The belt conveyor tensioning part is located at the tail of the belt conveyor. The utility model uses a large belt conveyor fast loosening device, which only requires the cooperation of a belt driver and a winch driver. The motor drives the active rolling loosening belt, and the winch is activated while the belt is running slowly. It only takes one minute to loosen the 3-5 meter belt, which greatly reduces maintenance time, improves maintenance efficiency, and greatly improves safety.

[0021] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0022] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A large belt conveyor quick belt loosening device, characterized in that: It includes a first anti-slip card, a second anti-slip card, a movable pulley, a fixed pulley, a steel rope, and a drive assembly. The first anti-slip card and the second anti-slip card each include an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are clamped on both sides of the belt through a connecting piece, and an embedding groove is provided on the contact surface of the upper clamping plate and the lower clamping plate with the belt, and an anti-slip strip is provided in the embedding groove, the first anti-slip card is clamped on the belt between the second active roller and the third active roller, and the second anti-slip card is clamped on the belt at the third active roller and fixedly connected to the belt frame, The movable pulley is connected to the first anti-slip card, the fixed pulley is connected to the lower end of the belt frame, the horizontal height of the fixed pulley is lower than the movable pulley, the steel wire rope passes around the wheel grooves of the fixed pulley and the movable pulley in sequence, so that the two are connected in transmission, one end of the steel wire rope is a fixed end, and the other end is a driving end, the fixed end is fixedly connected to the belt frame, and the driving end is connected to the driving assembly.

2. The large belt conveyor quick belt loosening device according to claim 1 is characterized in that: The connecting parts are a screw, a sleeve and a nut. Upper holes are respectively provided at both ends of the upper splint, which pass through in the up and down directions. Lower holes are respectively provided at both ends of the lower splint, which pass through in the up and down directions. The screw is passed through the upper and lower holes, and nuts and sleeves are respectively provided at both ends. The sleeves and nuts are respectively fastened against the upper and lower splints.

3. The large belt conveyor quick belt loosening device according to claim 1, characterized in that: The fixed end of the steel wire rope is connected to the belt frame near the third active roller.

4. The large-scale belt conveyor quick belt loosening device according to claim 1, characterized in that: The fixed pulley is connected to the belt frame close to the third active roller.

5. The large-scale belt conveyor quick belt loosening device according to claim 1, characterized in that: The contact surface between the anti-slip strip and the belt is provided with a continuous concave-convex corrugated structure.

6. The large-scale belt conveyor quick belt loosening device according to claim 1, characterized in that: A plurality of connecting plates are provided at intervals on the outer side of the upper clamping plate of the first anti-slip clamp, which are used to connect with the movable pulley and make the position of the movable pulley adjustable.

7. The large-scale belt conveyor quick belt loosening device according to claim 1, characterized in that: The driving component is a winch, and when the winch is working, the belt conveyor runs at a slow speed at the same time.

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