Tensioning device for closed belt conveyor

Abstract

The utility model provides a tensioning device for a closed belt conveyor, which is characterized in that the tensioning device comprises a tensioning screw rod, a tensioning sleeve and a locking block, one end of the tensioning screw rod is inserted into a tensioning component in the belt conveyor and adjusts the tensioning degree of a belt through rotation, and the other end of the tensioning screw rod is in threaded connection with the tensioning sleeve; the tensioning sleeve penetrates through a belt conveyor rack, one end of the tensioning sleeve is provided with an adjusting head, and the other end of the tensioning sleeve is in limiting fit with the rack through a limiting boss. The locking block is hinged to the inner end of a rack of the tensioning lead screw through a pin shaft and connected with a belt conveyor bearing seat in a locking mode. The tensioning device is convenient to adjust and high in stability, the convenience of belt adjustment by field personnel is greatly facilitated, the labor intensity of workers is reduced, and the occurrence frequency of deviation accidents caused by the fact that the coal feeder cannot adjust deviation in time is reduced.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyors, and more particularly to a tensioning device for enclosed belt conveyors. Background Technology

[0002] Currently, enclosed belt conveyors are widely used in coal mill feeding systems, but their high internal negative pressure easily leads to material leakage from both sides of the belt. Even with cleaning chains, some coal dust is still carried into the tail roller and accumulates, ultimately causing belt misalignment. Traditional tensioning devices are located inside the belt conveyor, requiring shutdown, material emptying, and opening of the maintenance door for adjustment, which is complex and time-consuming. Since the kiln system needs continuous operation, coal mill shutdowns directly affect fuel supply, causing production interruptions. Existing technology cannot achieve online adjustment, resulting in frequent coal mill downtime due to malfunctions, severely restricting system stability and production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a tensioning device for enclosed belt conveyors to solve the problem that existing technologies cannot achieve online adjustment.

[0004] This utility model is achieved using the following technical solution: a tensioning device for a closed belt conveyor, characterized in that it includes a tensioning screw, a tensioning sleeve, and a locking block. One end of the tensioning screw is inserted into the tensioning component inside the belt conveyor and the belt tension is adjusted by rotation. The other end is threadedly connected to the tensioning sleeve. The tensioning sleeve passes through the belt conveyor frame, with an adjusting head at one end and a limiting boss at the other end that limits the engagement with the frame. The locking block is hinged to the inner end of the tensioning screw in the frame via a pin and locked to the belt conveyor bearing seat.

[0005] Furthermore, the tensioning sleeve has a coaxial first cavity and a second cavity inside. The first cavity is a smooth circular hole for guiding the tensioning screw, and the second cavity is a threaded hole that forms a threaded engagement with the tensioning screw.

[0006] Furthermore, the adjusting head has a hexagonal prism structure, with its outer end extending to the outside of the conveyor frame for wrench tool operation.

[0007] Furthermore, the inner end of the tensioning screw frame is provided with a mounting pin hole one, and the corresponding position of the locking block is provided with a mounting pin hole two, with the pin shaft passing through the two holes to form a hinge structure.

[0008] Furthermore, the limiting boss is an annular flange structure with a diameter larger than the mounting hole of the belt conveyor frame, dividing the tensioning sleeve into inner and outer sides of the frame.

[0009] Furthermore, the locking block and the bearing seat are locked together by a convex-concave snap-fit ​​structure, and the working surface of the locking block and the contact surface of the bearing seat are provided with anti-slip teeth.

[0010] Furthermore, the adjusting head can also be square or other shapes that can be used with a wrench tool.

[0011] The tensioning device for a closed belt conveyor described in this utility model has the following advantages:

[0012] The tensioning device is easy to adjust and highly stable, greatly facilitating the adjustment of the belt by on-site personnel, reducing the labor intensity of workers, and reducing the frequency of accidents caused by the inability of the coal feeder to adjust its deviation in time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a tensioning device for an enclosed belt conveyor;

[0015] Figure 2 This is a schematic diagram of a tensioning screw;

[0016] Figure 3 This is a schematic diagram of a tensioning sleeve;

[0017] Figure 4 This is a schematic diagram of the lock block;

[0018] In the figure, 1-tensioning screw, 2-tensioning sleeve, 3-locking block, 11-installation pin hole one, 21-adjusting head, 22-first cavity, 23-second cavity, 24-limiting boss, 31-installation pin hole two. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figure 1-4 As shown, a tensioning device for a closed belt conveyor includes a tensioning screw 1, a tensioning sleeve 2, and a locking block 3. One end of the tensioning screw 1 is inserted into the tensioning components inside the belt conveyor, and the tension of the belt conveyor is adjusted by rotating the tensioning screw 1. The tensioning screw 1 is inserted into the tensioning sleeve 2 and connected to the belt conveyor frame through the tensioning sleeve 2. One end of the tensioning screw 1 and the tensioning sleeve 2 extends out of the belt conveyor frame, thereby achieving online adjustment. The locking block 3 is located at the end of the tensioning screw 1 that extends into the belt conveyor frame and is connected to the tensioning screw 1 through a pin. The belt conveyor has bearing seats and supports inside, and the entire tensioning device is locked together by the locking block 3 and the bearing seats.

[0022] The tensioning sleeve 2 includes a first cavity 22 and a second cavity 23. An adjusting head 21 is provided at one end of the tensioning sleeve 2. The adjusting head 21 has a hexagonal prism structure, and a limiting boss 24 is also provided on the outer side of the tensioning sleeve 2. The first cavity 22 is a circular hole, and the second cavity 23 is a threaded hole. The thread in the second cavity 23 engages with the tensioning screw 1. The limiting boss 24 engages with the conveyor frame, separating the inner and outer sides of the tensioning sleeve 2 on the conveyor frame. One side of the adjusting head 21 extends outside the conveyor frame, and online adjustment is achieved by rotating the adjusting head 21 with a wrench.

[0023] The tensioning screw 1 has a mounting pin hole 11 at one end and a mounting pin hole 31 on the locking block 3. The locking block 3 is fixed by inserting the pin into the mounting pin hole 11 and the mounting pin hole 31.

[0024] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A tensioning device for a closed belt conveyor, characterized in that It includes a tensioning screw rod (1), a tensioning sleeve (2) and a lock block (3), one end of the tensioning screw rod (1) is inserted into the tensioning part in the belt conveyor and the tensioning degree of the belt is adjusted by rotating, the other end is threadedly connected with the tensioning sleeve (2); the tensioning sleeve (2) penetrates the rack of the belt conveyor, one end is provided with an adjusting head (21), the other end is limitedly matched with the rack through a limiting boss (24); the lock block (3) is hingedly connected with the inner end of the rack of the tensioning screw rod (1) through a pin shaft and is lockedly connected with the bearing seat of the belt conveyor.

2. A tensioning device for a closed belt conveyor according to claim 1, characterized in that The tensioning sleeve (2) is internally provided with coaxial first and second cavities (22 and 23), the first cavity (22) is a smooth round hole for guiding the tensioning screw rod (1), and the second cavity (23) is a threaded hole and is threadedly matched with the tensioning screw rod (1).

3. A tensioning device for a closed belt conveyor according to claim 2, characterized in that The adjusting head (21) is a hexagonal prism structure, the outer end thereof extends to the outside of the rack of the belt conveyor and is used for operating a wrench tool.

4. A tensioning device for an enclosed belt conveyor as defined in claim 1, characterized in that The inner end of the rack of the tensioning screw rod (1) is provided with a mounting pin hole one (11), the lock block (3) is provided with a mounting pin hole two (31) at the corresponding position, and the pin shaft passes through the two holes to form a hinged structure.

5. A tensioning device for an enclosed belt conveyor as defined in claim 1, characterized in that The limiting boss (24) is an annular flange structure, the diameter thereof is greater than that of the mounting hole of the rack of the belt conveyor, and the tensioning sleeve (2) is divided into two sides inside and outside the rack.

6. A tensioning device for an enclosed belt conveyor as defined in claim 1, characterized in that The lock block (3) is locked with the bearing seat through a concave-convex clamping structure, the working surface of the lock block (3) and the contact surface of the bearing seat are provided with anti-skid tooth patterns.

7. A tensioning device for an enclosed belt conveyor as defined in claim 3, characterized in that The adjusting head (21) can also be square or other shapes capable of being matched with the wrench tool.

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