Conveying belt with tensioning structure

Abstract

The utility model relates to the technical field of conveying belts, in particular to a conveying belt with a tensioning structure, which comprises a conveying belt and two mounting plates with an adjustable distance, driving shafts are arranged at the center of the conveying belt and close to two ends, the driving shafts are rotatably connected with the mounting plates through rotating shafts, a driving motor is mounted on the outer wall of one mounting plate, and a tensioning mechanism is mounted on the outer wall of the other mounting plate. A plurality of upper carrier rollers distributed at equal intervals are arranged between the two driving shafts, lower carrier rollers are arranged at the corresponding positions between every two adjacent upper carrier rollers, the top ends of the upper carrier rollers and the top ends of the driving shafts are located on the same horizontal line, and a height-adjustable moving plate is arranged at the ends of the lower carrier rollers jointly. The height of the movable plate and the height of the lower carrier roller are adjusted by pushing and pulling the connecting block through contraction of the piston rod of the electric cylinder, so that the efficiency of adjusting the tension degree of the conveying belt is improved, and the conveying belt tension adjusting device is simple in structure, convenient to operate and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belts, in particular to a conveyor belt with a tensioning structure. Background Art

[0002] A belt conveyor is a continuous transportation device that uses an endless conveyor belt as a traction and load-bearing component to transport materials from one end to the other. In order to ensure that there is sufficient tension on the driving roller in the belt conveyor to prevent the conveyor belt from slipping, and to ensure that the tension at each point of the conveyor belt is not less than the minimum value to ensure the smooth operation and service life of the conveyor belt, a tensioning structure is required.

[0003] A coal mine conveyor belt self-tensioning device with publication number CN217650200U includes a fixed frame, a conveyor belt is arranged on the inner side of the fixed frame, and a tensioning mechanism for tensioning and adjusting the conveyor belt is clamped on the front side of the fixed frame, the tensioning mechanism includes a fixed column, a plug column is arranged at the lower end of the fixed column, a U-shaped mounting frame is arranged on the front side of the fixed frame, and a socket matching the plug column is arranged at the bottom of the mounting frame, locking screws are screwed on the left and right side walls of the mounting frame, and the tensioning mechanism tensions and adjusts the conveyor belt.

[0004] Although the utility model completes the installation and fixation of the tensioning mechanism by inserting the plug post into the socket and locking it in the mounting frame with a locking screw, making the installation or disassembly of the tensioning mechanism more convenient, during actual use, the adjusting screw is driven to press the spring down on the adjusting block, and the spring is used to elastically press the movable block so that the pressing roller elastically tightens the conveyor belt downward, thereby achieving the tension adjustment of the conveyor belt. Friction is generated during the rotation of the screw, and the speed of movement of the adjusting block is affected by factors such as the pitch and the diameter of the screw, so that the moving speed of the adjusting block is slow, which affects the efficiency of adjusting the tension of the conveyor belt. In view of this, we propose a conveyor belt with a tensioning structure. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a conveyor belt with a tensioning structure.

[0006] The technical solution of the utility model is:

[0007] A conveyor belt with a self-tensioning structure comprises a conveyor belt and two mounting plates with adjustable spacing, wherein a driving shaft is provided at the center of the conveyor belt and near both ends, the driving shaft is rotatably connected to the mounting plates through a rotating shaft, a driving motor is installed on the outer wall of one of the mounting plates, a plurality of upper rollers distributed at equal intervals are provided between the two driving shafts, a lower roller is provided at the corresponding position between two adjacent upper rollers, the top end of the upper roller is located on the same horizontal line as the top end of the driving shaft, and the ends of the plurality of lower rollers are jointly provided with a movable plate with adjustable height.

[0008] As a preferred technical solution, a connection block is provided on one side of the mounting plate away from the conveyor belt, and an end of the connection block close to the mounting plate passes through the mounting plate and is fixedly connected to the corresponding movable plate.

[0009] As a preferred technical solution, an electric cylinder is provided below each of the connection blocks, and the end of the electric cylinder piston rod is fixedly connected to its corresponding connection block.

[0010] As a preferred technical solution, the rotating shaft is connected to its corresponding mounting plate via a bearing, and a plurality of rectangular blocks arranged in a circular array are provided on the outer wall of the rotating shaft near one end of the driving shaft.

[0011] As a preferred technical solution, the ends of the driving shaft are provided with slots for movable insertion of the rotating shaft and multiple rectangular blocks. The end of the rotating shaft corresponding to the driving motor away from the driving shaft passes through the inner wall of the corresponding mounting plate and is coaxially connected to the output shaft of the driving motor.

[0012] As a preferred technical solution, a cylindrical groove slidably connected to the upper roller is opened on the side of the front mounting plate close to the conveyor belt, and a positioning groove slidably connected to the lower roller is opened on the side of the front movable plate close to the conveyor belt.

[0013] As a preferred technical solution, a bottom plate perpendicular to the mounting plate is provided below the conveyor belt, the bottom of the mounting plate on the rear side is fixedly connected to the top of the bottom plate, and the mounting plate on the front side is slidably connected to the bottom plate.

[0014] As a preferred technical solution, L-shaped lower blocks are provided at the bottom of the front mounting plate and near both ends, and a movable groove slidably connected to the lower blocks is provided at the top of the bottom plate.

[0015] As a preferred technical solution, the end of the horizontal axis portion of the lower block passes through the bottom plate and is integrally formed with a fixing block, and the outer wall of the fixing block near the top is threadedly connected with bolts.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model realizes the height adjustment of the movable plate and the lower roller by pushing and pulling the connecting block through the contraction of the electric cylinder piston rod, thereby improving the efficiency of adjusting the tension of the conveyor belt, and has a simple structure, convenient operation and low production cost;

[0018] 2. The utility model facilitates the separation of the driving shaft from the rotating shaft by plugging and matching the rotating shaft and a plurality of rectangular blocks corresponding to the rotating shaft with the driving shaft, thereby improving the convenience of overhauling and replacing the driving shaft;

[0019] 3. The utility model facilitates the adjustment of the position of the front mounting plate by slidingly connecting the upper and lower rollers with their corresponding cylindrical grooves and positioning grooves, and slidingly connecting the lower block with the movable groove, so that the front ends of the upper and lower rollers are separated from the front mounting plate, thereby facilitating the disassembly and assembly of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0023] Figure 4 It is a schematic diagram of the partial structure disassembly after the installation plate in the utility model is cut;

[0024] Figure 5 It is a schematic diagram of a part of the structure after the installation plate in the utility model is cut;

[0025] Figure 6 This is the second partial structural schematic diagram of the utility model.

[0026] The meaning of each number in the figure is:

[0027] 1. Conveyor belt; 11. Driving shaft; 12. Upper roller; 13. Lower roller;

[0028] 2. Mounting plate; 21. Rotating shaft; 211. Rectangular block; 22. Moving plate; 221. Positioning groove; 23. Connecting block; 24. Lower block; 241. Fixed block; 2411. Bolt; 25. Driving motor; 26. Columnar groove;

[0029] 3. Bottom plate; 31. Moving slot;

[0030] 4. Electric cylinder. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0033] A conveyor belt with a tensioning structure, comprising a conveyor belt 1 and two mounting plates 2 with adjustable spacing, wherein a driving shaft 11 is provided at the center of the conveyor belt 1 and near both ends, wherein the driving shaft 11 is rotatably connected to the mounting plate 2 via a rotating shaft 21, and the rotating shaft 21 is connected to its corresponding mounting plate 2 via a bearing, so as to reduce the friction force generated during the rotation of the rotating shaft 21;

[0034] A driving motor 25 is installed on the outer wall of one of the mounting plates 2. The end of the rotating shaft 21 corresponding to the driving motor 25, which is away from the driving shaft 11, passes through the inner wall of the corresponding mounting plate 2 and is coaxially connected with the output shaft of the driving motor 25. As is well known to those skilled in the art, the driving motor 25 drives the rotating shaft 21 corresponding to the driving motor 25 to rotate after being powered.

[0035] As a preferred embodiment of the present invention, a plurality of rectangular blocks 211 arranged in a circular array are provided on the outer wall of the rotating shaft 21 and close to one end of the driving shaft 11, and slots for movable insertion of the rotating shaft 21 and the plurality of rectangular blocks 211 are provided at the end of the driving shaft 11, and the rotating shaft 21 and the plurality of rectangular blocks 211 corresponding thereto are integrally formed structures, and slots for movable insertion of the rotating shaft 21 and the plurality of rectangular blocks 211 are provided at the end of the driving shaft 11, so that the driving shaft 11, the rotating shaft 21 and the plurality of rectangular blocks 211 can be easily separated, and in addition, the driving shaft 11 will rotate synchronously with the rotation of the rotating shaft 21;

[0036] A plurality of upper rollers 12 are arranged between the two driving shafts 11 at equal intervals, and the top of the upper rollers 12 is located at the same horizontal line as the top of the driving shaft 11. The plurality of upper rollers 12 are used to support the conveyor belt 1, thereby improving the supporting force of the conveyor belt 1, and preventing the conveyor belt 1 from sagging due to excessive weight of the material when the conveyor belt 1 is conveying heavy objects;

[0037] A lower roller 13 is provided at the corresponding position between two adjacent upper rollers 12, and a height-adjustable movable plate 22 is provided at the ends of the multiple lower rollers 13. A connecting block 23 is provided on the side of the mounting plate 2 away from the conveyor belt 1. The end of the connecting block 23 close to the mounting plate 2 passes through the mounting plate 2 and is fixedly connected to the corresponding movable plate 22. An electric cylinder 4 is provided below the connecting block 23, and the end of the piston rod of the electric cylinder 4 is fixedly connected to the corresponding connecting block 23.

[0038] Furthermore, when the piston rod of the electric cylinder 4 is extended to the maximum, the bottom end of the lower roller 13 and the bottom end of the driving shaft 11 are located at the same horizontal line, and a support plate is provided below the base of the electric cylinder 4, and one side of the support plate is fixedly connected to its corresponding mounting plate 2, so as to improve the stability of the electric cylinder 4;

[0039] Specifically, the movable plate 22 and the connecting block 23 are both slidably connected to their corresponding mounting plates 2. During the contraction of the piston rod of the electric cylinder 4, the corresponding connecting block 23 is pushed and pulled, thereby realizing the height adjustment of the movable plate 22 and the lower roller 13 and other components. The rear ends of the lower roller 13 and the upper roller 12 are rotatably connected to the rear mounting plate 2.

[0040] As a preferred embodiment of the present invention, a cylindrical groove 26 slidably connected to the upper roller 12 is provided on the side of the front mounting plate 2 close to the conveyor belt 1. The number of the cylindrical grooves 26 is consistent with the number of the upper rollers 12 and corresponds one to one. The upper rollers 12 can rotate in the corresponding cylindrical grooves 26. A positioning groove 221 slidably connected to the lower roller 13 is provided on the side of the front movable plate 22 close to the conveyor belt 1. The number of the positioning grooves 221 is consistent with the number of the lower rollers 13 and corresponds one to one. The front end of the lower roller 13 can rotate in the corresponding positioning groove 221.

[0041] As a preferred embodiment of the present invention, a bottom plate 3 perpendicular to the mounting plate 2 is provided below the conveyor belt 1, the bottom of the rear mounting plate 2 is fixedly connected to the top of the bottom plate 3, the front mounting plate 2 is slidably connected to the bottom plate 3, an L-shaped lower block 24 is provided at the bottom and near both ends of the front mounting plate 2, a movable groove 31 slidably connected to the lower block 24 is provided at the top of the bottom plate 3, and the front end of the movable groove 31 is communicated with the outside so that the lower block 24 can be separated from the bottom plate 3 to facilitate the separation of the front mounting plate 2 and the bottom plate 3;

[0042] As a preferred embodiment of the present invention, the end of the horizontal axis portion of the lower block 24 passes through the base plate 3 and is integrally formed with a fixed block 241. The outer wall of the fixed block 241 and near the top are threadedly connected with a bolt 2411. The bottom end of the fixed block 241 is located on the same horizontal line as the bottom of the lower block 24. The top of the fixed block 241 is flush with the top of the longitudinal axis portion of the lower block 24. The screw end of the bolt 2411 passes through the corresponding fixed block 241 and is in close contact with the outer wall of the base plate 3 to fix the position of the fixed block 241.

[0043] When the conveyor belt with a tensioning structure of the utility model is in use, the piston rod of the electric cylinder 4 contracts and pulls the corresponding connecting block 23 to move, so that the connecting block 23 drives the corresponding moving plate 22 to move toward the side close to the bottom plate 3 to achieve the height adjustment of the lower roller 13. The lower roller 13 moves accordingly and pushes the bottom end of the center of the conveyor belt 1 toward the side close to the bottom plate 3, so that the distance between the upper and lower sides of the center of the conveyor belt 1 is adjusted, thereby achieving the adjustment of the tension of the conveyor belt 1.

[0044] After the service life of the conveyor belt 1 ends, firstly tighten the bolt 2411 so that the end of the screw rod does not contact the outer wall of the bottom plate 3, and then separate the front mounting plate 2 and the bottom plate 3 through the sliding connection between the lower block 24 and the movable groove 31. During the movement of the front mounting plate 2 away from the conveyor belt 1, the front rotating shaft 21 and the corresponding rectangular block 211 are moved out of the slot at the front end of the driving shaft 11, and the front ends of the upper roller 12 and the lower roller 13 are respectively pulled out from the corresponding cylindrical groove 26 and the positioning groove 221, so that the conveyor belt 1 can be replaced or repaired easily.

[0045] Then, the driving shaft 11 is pulled to move toward the end away from the rear mounting plate 2, so that the slot opened at the rear end of the driving shaft 11 is separated from the rear rotating shaft 21 and the corresponding rectangular block 211 to realize the disassembly of the driving shaft 11, thereby improving the convenience of loading, unloading and maintenance of the driving shaft 11.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A conveyor belt with a tensioning structure, characterized in that: The invention comprises a conveyor belt (1) and two mounting plates (2) with adjustable spacing. A driving shaft (11) is provided at the center of the conveyor belt (1) and near both ends. The driving shaft (11) is rotatably connected to the mounting plate (2) via a rotating shaft (21). A driving motor (25) is installed on the outer wall of one of the mounting plates (2). A plurality of upper rollers (12) are arranged between the two driving shafts (11) and are distributed at equal spacing. A lower roller (13) is arranged at a corresponding position between two adjacent upper rollers (12). The top of the upper roller (12) is located on the same horizontal line as the top of the driving shaft (11). The ends of the plurality of lower rollers (13) are jointly provided with a movable plate (22) with adjustable height.

2. The conveyor belt with a tensioning structure as claimed in claim 1, characterized in that: A connection block (23) is provided on the side of the mounting plate (2) away from the conveyor belt (1); an end of the connection block (23) close to the mounting plate (2) passes through the mounting plate (2) and is fixedly connected to the corresponding movable plate (22).

3. The conveyor belt with a tensioning structure as claimed in claim 2, characterized in that: An electric cylinder (4) is provided below each of the connection blocks (23), and the end of the piston rod of the electric cylinder (4) is fixedly connected to its corresponding connection block (23).

4. The conveyor belt with a tensioning structure as claimed in claim 1, characterized in that: The rotating shaft (21) is connected to its corresponding mounting plate (2) via a bearing, and a plurality of rectangular blocks (211) arranged in a ring array are provided on the outer wall of the rotating shaft (21) and at one end close to the driving shaft (11).

5. The conveyor belt with a tensioning structure as claimed in claim 1, characterized in that: The end of the driving shaft (11) is provided with a slot for movably plugging the rotating shaft (21) and a plurality of rectangular blocks (211), and the end of the rotating shaft (21) corresponding to the driving motor (25) away from the driving shaft (11) passes through the inner wall of the corresponding mounting plate (2) and is coaxially connected to the output shaft of the driving motor (25).

6. The conveyor belt with a tensioning structure as claimed in claim 1, characterized in that: A columnar groove (26) slidably connected to the upper roller (12) is provided on the side of the front mounting plate (2) close to the conveyor belt (1), and a positioning groove (221) slidably connected to the lower roller (13) is provided on the side of the front moving plate (22) close to the conveyor belt (1).

7. The conveyor belt with a tensioning structure as claimed in claim 1, characterized in that: A bottom plate (3) perpendicular to the mounting plate (2) is provided below the conveyor belt (1); the bottom of the mounting plate (2) on the rear side is fixedly connected to the top of the bottom plate (3); and the mounting plate (2) on the front side is slidably connected to the bottom plate (3).

8. The conveyor belt with a tensioning structure as claimed in claim 7, characterized in that: An L-shaped lower block (24) is provided at the bottom of the front mounting plate (2) and near both ends, and a movable groove (31) is provided at the top of the bottom plate (3) and is slidably connected to the lower block (24).

9. The conveyor belt with a tensioning structure as claimed in claim 8, characterized in that: The end of the transverse axis portion of the lower block (24) passes through the bottom plate (3) and is integrally formed with a fixing block (241), and the outer wall of the fixing block (241) and near the top are threadedly connected with bolts (2411).

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