Coal mine belt conveyor driving device with automatic tensioning function

Abstract

The utility model provides automatic tensioning function's coal mine belt conveyor transmission device relates to the technical field of conveyor, including device body, the device body annular array is provided with three place before -and-after direction's inferior arc semicircle cylinder, and the inferior arc semicircle cylinder both ends outside circumference all are equipped with the ring groove with thread, and the inferior arc semicircle cylinder inside circumference middle is equipped with before -and-after direction's insert plate, and the inferior arc semicircle cylinder between both ends ring groove inside all are installed with the assembly locking cylinder, and the assembly locking cylinder inside circumference is equipped with thread, and the assembly locking cylinder outside circumference annular array is equipped with six place dismounting blind hole, and the inferior arc semicircle cylinder and assembly locking cylinder are mutually assembled to form complete transmission roller, and the inferior arc semicircle cylinder is conveniently taken off from transmission roller axle, solved the transmission roller for integral type, leading to transmission roller's surface damage after dismounting replacement process is more complicated, and transmission roller is not convenient to set up as split type, to make transmission roller surface damage after can quick dismount replacement problem.

Description

Technical Field

[0001] This utility model belongs to the field of conveyor technology, and in particular relates to a transmission device for a coal mine belt conveyor with automatic tensioning function. Background Technology

[0002] Coal mine belt conveyors, also known as belt conveyors, are continuous material conveying equipment specifically designed for coal mining, production, and transfer processes. They are mainly used for transporting bulk or bagged materials in industries such as coal mining and metallurgy. They feature large transport capacity, long distance, and low energy consumption, and can adapt to inclined transport and explosion-proof conditions. The transmission device is a crucial component for the operation of the conveyor belt.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing coal mine belt conveyor drive devices: 1. The transmission roller is a single piece, which makes the disassembly and replacement process cumbersome after the surface of the transmission roller is damaged. It is not convenient to make the transmission roller a split type so that it can be quickly disassembled and replaced after the surface of the transmission roller is damaged. 2. The belt tension is adjusted manually, which makes it impossible to adjust the belt dynamically in real time. It is inconvenient to add automatic tensioning measures to the device to achieve real-time dynamic adjustment of the belt. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a coal mine belt conveyor transmission device with automatic tensioning function. This solves the problems of existing integrated transmission rollers, which lead to cumbersome disassembly and replacement processes after surface damage, making it inconvenient to design separate transmission rollers for quick disassembly and replacement; and the manual adjustment of belt tension, which prevents real-time dynamic adjustment of the belt, making it inconvenient to add automatic tensioning measures to the device to achieve real-time dynamic belt adjustment.

[0005] The purpose and effectiveness of this utility model's automatic tensioning function for coal mine belt conveyor transmission devices are achieved through the following specific technical means: A coal mine belt conveyor transmission device with automatic tensioning function includes a device body; the device body is arranged in a ring array with three inferior arc semi-cylinders in the front-back direction. The outer circumference of both ends of the inferior arc semi-cylinders is provided with threaded annular grooves. An insertion plate in the front-back direction is provided in the middle of the inner circumference of the inferior arc semi-cylinders. An assembly locking cylinder is installed in the annular grooves at both ends of the inferior arc semi-cylinders. The inner circumference of the assembly locking cylinder is provided with threads. The outer circumference of the assembly locking cylinder is arranged in a ring array with six disassembly blind holes.

[0006] Furthermore, an assembly support frame is bolted to the bottom of both ends of the tensioning guide rod. The assembly support frame is an H-shaped plate structure. The upper part of the upright plate of the assembly support frame is provided with a through insertion hole. The top wall of the insertion hole of the assembly support frame is provided with a threaded hole in the vertical direction. The lower part of the upright plate on the left side of the assembly support frame is provided with two fixing holes arranged vertically and horizontally. Triangular plates are provided at the bottom of both ends of the horizontal plate of the assembly support frame.

[0007] Furthermore, an automatic tensioning spring is fitted around the outer circumference of the left side of the tensioning guide rod, and the surface of the automatic tensioning spring is provided with a corrosion-resistant layer.

[0008] Furthermore, a pre-tensioning adjusting cylinder is threadedly installed on the outer circumference of the left end of the tensioning guide rod. The inner circumference of the pre-tensioning adjusting cylinder is threaded, and the outer circumference of the pre-tensioning adjusting cylinder is provided with a regular hexagonal structure. A limit ring plate is provided on the outer circumference of the right end of the pre-tensioning adjusting cylinder.

[0009] Furthermore, a tensioning guide rod is inserted into the guide hole of the bearing movable block. The tensioning guide rod has a through-hole on both the left and right ends, and a thread is formed on the outer circumference of the left side of the tensioning guide rod.

[0010] Furthermore, a bearing moving block is installed on the fixed column of the transmission roller shaft via a bearing. The inner end face of the bearing moving block is provided with a bearing groove, and the outer end of the bearing moving block is provided with a guide hole that passes through from left to right.

[0011] Furthermore, a transmission roller shaft is provided inside the semi-circular space between the inferior arcs. The transmission roller shaft has three strip grooves arranged in the front and rear directions in a circular array on its outer circumference. Fixed columns are provided on the front and rear end faces of the transmission roller shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The design facilitates the assembly of the inferior arc semi-cylinder and the locking cylinder to form a complete transmission roller, and makes it easy to remove the inferior arc semi-cylinder from the transmission roller shaft. This solves the problem that the transmission roller is a single piece, which makes the disassembly and replacement process cumbersome after the surface of the transmission roller is damaged. It also makes it inconvenient to set the transmission roller as a separate piece so that it can be quickly disassembled and replaced after the surface of the transmission roller is damaged.

[0013] The convenient carrier moving block and automatic tension spring are sleeved on the tensioning guide rod, which allows the carrier moving block to move to the right to tension the belt by pushing the automatic tension spring. This solves the problem that the belt tension cannot be adjusted in real time by manually adjusting it, which makes it inconvenient to add automatic tensioning measures to the device to achieve real-time dynamic adjustment of the belt. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a disassembled structural diagram of the present invention.

[0016] Figure 3 This is an assembly diagram of the inferior arc semi-circular cylinder and the assembly locking cylinder of this utility model.

[0017] Figure 4 This is an assembly cross-sectional view of the transmission roller shaft and the load-bearing moving block of this utility model.

[0018] Figure 5 This is an assembly cross-sectional view of the tensioning guide rod and the assembly support frame of this utility model.

[0019] Figure 6 This is an assembly cross-sectional view of the inferior arc semi-circular cylinder and the transmission roller shaft of this utility model.

[0020] In the diagram: 1. Device body; 2. Slightly curved semi-cylinder; 3. Assembly locking cylinder; 4. Transmission roller shaft; 5. Bearing moving block; 6. Tensioning guide rod; 7. Pre-tensioning adjusting cylinder; 8. Automatic tensioning spring; 9. Assembly bearing frame. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown: This utility model provides a transmission device for a coal mine belt conveyor with automatic tensioning function, including a device body 1; the device body 1 has three inferior arc semi-cylinders 2 arranged in a circular array in the front and rear directions, which facilitates the assembly of the inferior arc semi-cylinders 2 to form a complete transmission roller. The outer circumference of both ends of the inferior arc semi-cylinders 2 is provided with threaded annular grooves, which facilitates the installation of the assembly locking cylinder 3 by threads. The middle of the inner circumference of the inferior arc semi-cylinders 2 is provided with an insertion plate in the front and rear directions, which facilitates insertion into the strip groove of the transmission roller shaft 4 for limiting. The assembly locking cylinder 3 is installed in the annular grooves at both ends of the inferior arc semi-cylinders 2, which facilitates locking and fixing the assembled inferior arc semi-cylinders 2. The inner circumference of the assembly locking cylinder 3 is provided with threads, which facilitates the assembly locking cylinder 3 to be disassembled and installed by threads. The outer circumference of the assembly locking cylinder 3 is provided with threads. The annular array has six blind holes for disassembly, facilitating the assembly and disassembly of the locking cylinder 3 by rotating it with tools. A transmission roller shaft 4 is installed inside the semi-circular cylinders 2, allowing them to rotate synchronously with the semi-circular cylinders 2 and the locking cylinder 3. The outer circumference of the transmission roller shaft 4 has three front-to-back grooves for inserting and limiting the semi-circular cylinders 2. Fixed posts are provided on both the front and rear ends of the transmission roller shaft 4, facilitating the installation of the bearing moving block 5 via bearings. The bearing moving block 5 is mounted on the fixed posts of the transmission roller shaft 4 via bearings, allowing the transmission roller shaft 4 to rotate via bearings. A bearing groove is provided on the inner end face of the bearing moving block 5, facilitating the installation of the transmission roller shaft 4 via bearings. A through-hole is provided on the outer end of the bearing moving block 5, facilitating the insertion of the tensioning guide rod 6.

[0023] The tensioning guide rod 6 is inserted into the guide hole of the bearing moving block 5, facilitating the movement of the bearing moving block 5 along the tensioning guide rod 6. The tensioning guide rod 6 has through-hole fixing holes at both ends for easy assembly of the bearing frame 9 via bolts. The outer circumference of the left side of the tensioning guide rod 6 is threaded for easy installation of the pre-tensioning adjusting cylinder 7. The pre-tensioning adjusting cylinder 7 is threaded on the outer circumference of the left end of the tensioning guide rod 6, facilitating adjustment of the initial tension of the automatic tensioning spring 8. The inner circumference of the pre-tensioning adjusting cylinder 7 is threaded for easy installation. The outer circumference of the pre-tensioning adjusting cylinder 7 has a regular hexagonal structure for easy adjustment by rotating it with a tool. The outer circumference of the right end of the pre-tensioning adjusting cylinder 7 has a limit ring plate for limiting the left end of the automatic tensioning spring 8. The outer circumference of the left side of the tensioning guide rod 6 is fitted with an automatic tensioning adjustment cylinder 8. The tension spring 8 facilitates automatic belt tensioning by pushing the bearing moving block 5. The surface of the automatic tension spring 8 is provided with a corrosion-resistant layer to increase its service life. The bottom of the tension guide rod 6 is bolted to the assembly bearing frame 9 to facilitate the bearing of various components. The assembly bearing frame 9 has an H-shaped plate structure for easy load bearing. The upper part of the vertical plate of the assembly bearing frame 9 has a through insertion hole for easy insertion of the tension guide rod 6. The top wall of the insertion hole of the assembly bearing frame 9 has a threaded hole in the vertical direction for easy installation of fixing bolts. The lower part of the left vertical plate of the assembly bearing frame 9 has two vertically arranged through fixing holes for easy bolt fixing of the assembly bearing frame 9 to the conveyor frame. The bottom of the left and right ends of the horizontal plate of the assembly bearing frame 9 is provided with triangular plates to increase the load-bearing capacity.

[0024] The specific usage and function of this embodiment are as follows: In this utility model, such as Figure 1As shown, the device body 1 is in use. At this time, a belt is wound around the outer circumference between the lesser arc semi-cylinders 2. The left side of the belt is cut off. Normally, the belt needs to be connected to the conveyor to ensure continuous conveying. In this state, the bearing moving block 5, under the force of the automatic tensioning spring 8, always maintains a rightward thrust. This, in turn, causes the transmission roller shaft 4 to maintain a rightward thrust, which in turn causes the lesser arc semi-cylinders 2 to maintain a rightward thrust. The rightward thrust of the lesser arc semi-cylinders 2 tensions the belt. This tensioning method solves the problem of manually adjusting the belt tension, which prevents real-time dynamic adjustment of the belt. The problem is that rotating the pre-tensioning adjusting cylinder 7 can compress or release the automatic tensioning spring 8, thereby adjusting the initial tension to suit different working conditions. When the inferior arc semi-cylinder 2 is disassembled, the transmission roller shaft 4 is kept stationary. The assembly locking cylinder 3 is rotated by a tool to engage with the threaded engagement of the inferior arc semi-cylinder 2. The assembly locking cylinder 3 moves outward through the threaded engagement to disengage from the annular groove of the inferior arc semi-cylinder 2, thereby releasing the assembly locking cylinder 3 from the assembly locking of the inferior arc semi-cylinder 2. Then, the inferior arc semi-cylinder 2 can be removed from the strip groove of the transmission roller shaft 4. This method solves the problem that the transmission roller is a one-piece unit, which makes the disassembly and replacement process cumbersome after the surface of the transmission roller is damaged.

[0025] Example 2: The difference from Example 1 is that the inner end face of the assembly locking cylinder 3 can also be set as a frosted surface, thereby increasing the friction between the inner end face of the assembly locking cylinder 3 and the inferior arc semi-circular cylinder 2, and preventing the assembly locking cylinder 3 from rotating and loosening.

[0026] Example 3: The difference from Example 1 is that the regular hexagonal structure of the pre-tightening adjusting cylinder 7 can also be set as a regular heptagonal structure. This makes it necessary to use a special tool that works with the regular heptagonal structure to rotate the pre-tightening adjusting cylinder 7, thus preventing non-staff members from rotating and adjusting the pre-tightening adjusting cylinder 7.

Claims

1. A transmission device for a coal mine belt conveyor with automatic tensioning function, characterized in that: The device includes a main body (1); the main body (1) is arranged in a ring with three inferior arc semi-cylinders (2) in the front and back directions. The outer circumference of both ends of the inferior arc semi-cylinders (2) is provided with threaded annular grooves. The middle of the inner circumference of the inferior arc semi-cylinders (2) is provided with an insertion plate in the front and back direction. The annular grooves at both ends of the inferior arc semi-cylinders (2) are each equipped with an assembly locking cylinder (3). The inner circumference of the assembly locking cylinder (3) is provided with threads. The outer circumference of the assembly locking cylinder (3) is arranged in a ring with six disassembly blind holes.

2. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 1, characterized in that: The inner part of the inferior arc semi-cylinder (2) is provided with a transmission roller shaft (4), and the outer circumference of the transmission roller shaft (4) is provided with three strip grooves in the front and rear directions. The front and rear end faces of the transmission roller shaft (4) are provided with fixed columns.

3. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 2, characterized in that: A bearing moving block (5) is installed on the fixed column of the transmission roller shaft (4) via a bearing. The inner end face of the bearing moving block (5) is provided with a bearing groove, and the outer end of the bearing moving block (5) is provided with a guide hole that passes through from left to right.

4. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 3, characterized in that: A tensioning guide rod (6) is inserted into the guide hole of the bearing moving block (5). The tensioning guide rod (6) has a through-hole fixed hole at both ends on the left and right sides. The tensioning guide rod (6) has a thread on the outer circumference of the left side.

5. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 4, characterized in that: The tensioning guide rod (6) has a pre-tensioning adjustment cylinder (7) installed on the outer circumference of the left end by a thread. The inner circumference of the pre-tensioning adjustment cylinder (7) is threaded, the outer circumference of the pre-tensioning adjustment cylinder (7) is provided with a regular hexagonal structure, and the outer circumference of the right end of the pre-tensioning adjustment cylinder (7) is provided with a limit ring plate.

6. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 5, characterized in that: The tensioning guide rod (6) has an automatic tensioning spring (8) on its left outer circumference, and the surface of the automatic tensioning spring (8) is provided with a corrosion-resistant layer.

7. The coal mine belt conveyor transmission device with automatic tensioning function as described in claim 6, characterized in that: The tensioning guide rod (6) is connected to an assembly support frame (9) by bolts at the bottom of both ends. The assembly support frame (9) is an H-shaped plate structure. The upper end of the upright plate of the assembly support frame (9) is provided with a through insertion hole. The top wall of the insertion hole of the assembly support frame (9) is provided with a threaded hole in the vertical direction. The lower part of the upright plate on the left side of the assembly support frame (9) is provided with two fixing holes arranged vertically and horizontally. Triangular plates are provided at the bottom of both ends of the horizontal plate of the assembly support frame (9).

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