A belt support device of a coal mine conveying belt conveyor

Abstract

A kind of coal mine transport belt conveyor's belt support device, belong to coal mine transport equipment field.It aims at solving the problem that coal mine transport belt conveyor material impact point material is easily damaged belt.The device includes crossbeam, two ends of crossbeam are hinged swing frame, three support rollers are arranged between two swing frames and are distributed in V type;Support roller is equipped with fixed shaft in bearing, middle fixed shaft is rotatably connected with connecting piece at both ends, and connecting piece is connected with two side fixed shafts at other end;Two guide blocks are fixed on the side of crossbeam, vertical slide bar is slidably connected in guide block, contact roller is rotatably connected at the top of two slide bars, contact roller abuts middle support roller, second spring is equipped between the top of slide bar and guide block;Support piece is arranged between swing frame and crossbeam, support piece includes sleeve rotatably connected with crossbeam, insertion rod inserted into sleeve and first spring between them.It is used for supporting material impact point of coal mine transport belt conveyor, can buffer material impact to protect belt, prevent belt slackening simultaneously, and ensure conveying effect.

Description

Technical Field

[0001] This utility model relates to the field of coal mine transportation technology, and in particular to a belt support device for a coal mine transport belt conveyor. Background Technology

[0002] In coal mining operations, conveyor belts are key equipment for transporting materials such as coal over long distances. They use support structures to lift the belt and prevent it from sagging due to the weight of the material. Currently, most common support devices use support rollers as the core support component. Some support rollers are designed with a V-shaped distribution to better conform to the conveyor belt surface and expand the support range.

[0003] However, most existing belt support devices use rigid supports in actual use. When coal blocks fall from the feeding device onto the belt, the belt is greatly affected by the impact force of the material, which easily leads to wear and cracking after long-term impact, shortening the belt's service life. At the same time, when the support rollers move downward under the pressure of the material, they will cause the belt to sink synchronously, which can easily cause the belt to loosen and affect the conveying efficiency. Therefore, a belt support device for coal mine conveyor belts is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where the belt is significantly affected by the impact force of the material when coal blocks fall from the feeding device onto the belt. Therefore, this invention proposes a belt support device for coal mine conveyor belts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A belt support device for a coal mine conveyor belt includes a crossbeam, with swing frames hinged to both ends of the crossbeam, and three support rollers arranged between the two swing frames in a V-shape. Each of the support rollers has a fixed shaft that rotates through bearings. One end of two of the fixed shafts is fixed to two swing frames, and both ends of the other fixed shaft are rotatably connected to connecting plates. The two connecting plates are rotatably connected to the fixed shafts on both sides of the shaft. Two guide blocks are fixedly connected to one side of the crossbeam. A vertically arranged slide rod is slidably connected inside each guide block. A contact roller is rotatably connected between the tops of the two slide rods. The contact roller is located below and abuts against the middle support roller. A second spring is installed between the top of the slide rod and the guide block through a spring seat.

[0006] As a further embodiment of this utility model, a rotating shaft is rotatably connected between the bottoms of the two sliding rods, and multiple tension rollers are fixedly connected to the circumference of the rotating shaft.

[0007] As a further embodiment of this utility model, a support member is provided between the swing frame and the crossbeam. The support member includes a sleeve, which is rotatably connected to one side of the crossbeam. A rod is inserted into the sleeve, and the top of the rod is rotatably connected to the swing frame. A first spring is installed between the rod and the sleeve through a spring seat.

[0008] As a further improvement of this utility model, positioning plates are welded to both ends of the crossbeam to limit the angle of the swing frame.

[0009] As a further improvement of this utility model, two fixing plates are welded to both sides of the crossbeam, and each fixing plate has a through mounting hole on its surface.

[0010] As a further improvement of this invention, rubber pads are adhered to the bottom of each fixing piece.

[0011] In this application, the product is installed on a frame and positioned at the receiving point. Multiple products can be arranged side by side. Ordinary V-shaped support rollers can be installed away from the receiving point, and a conveyor belt can be wound around them. When the coal material falls onto the conveyor belt, the middle support roller sinks under the action of gravity, and then presses down on the contact roller. The contact roller drives the slide bar to move downward, thereby compressing the second spring, which can play a buffering role and reduce the damage to the conveyor belt caused by the impact of the material. When the middle support roller moves downward, it pulls the swing frames on both sides to rotate, which in turn compresses the first spring, further buffering the material. When the contact roller moves downward, it also drives the tension roller to move downward through the slide bar. The tension roller pushes the belt below downward, thereby playing a tensioning role and preventing the belt from slackening when the support roller moves downward, thus maintaining the conveying effect.

[0012] Beneficial effects: In this utility model, the belt support device of the coal mine conveyor belt, through the combined use of the first spring and the second spring, enables the first spring and the second spring to form a buffer when the coal block falls at the receiving point, thereby reducing the damage of the material impact to the conveyor belt; In this utility model, the belt support device for a coal mine conveyor belt is provided by installing a tension roller at the bottom of the slide bar. When the slide bar moves downward, the tension roller can push the belt below downward, thereby achieving a tensioning effect and preventing the belt from loosening when the support roller moves downward, thus maintaining the conveying effect. In this invention, when the coal block falls at the receiving point, it can be buffered by the first and second springs to reduce the damage to the conveyor belt caused by the impact of the material. At the same time, it can tighten the belt to prevent the belt from loosening when the support roller moves down, thus maintaining the conveying effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a belt support device for a coal mine conveyor belt according to the present invention. Figure 2 This is a cross-sectional view of the crossbeam structure of a belt support device for a coal mine conveyor belt according to the present invention. Figure 3 This is a schematic diagram of the support roller structure of a belt support device for a coal mine conveyor belt conveyor proposed in this utility model.

[0014] In the diagram: 1. Crossbeam; 2. Swing frame; 3. Support roller; 4. Fixed shaft; 5. Insert rod; 6. Sleeve; 7. First spring; 8. Positioning plate; 9. Guide block; 10. Second spring; 11. Slide rod; 12. Rotating shaft; 13. Tensioning roller; 14. Contact roller; 15. Fixed plate; 16. Connecting plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In one embodiment: Refer to Figures 1-3 A belt support device is disclosed, which uses a crossbeam 1 as the basic load-bearing structure. Both ends of the crossbeam 1 are hinged to swing frames 2 via pins. Three support rollers 3 are arranged between the two swing frames 2 in a V-shape, which allows for better contact with the conveying surface of the belt, improving the support range and stability. Each support roller 3 has a fixed shaft 4 mounted inside via bearings. Two fixed shafts 4 are fixed at one end to the two swing frames 2, while the other fixed shaft 4 (the fixed shaft 4 corresponding to the middle support roller 3) has connecting plates 16 rotatably connected to both ends via pins. The other ends of the two connecting plates 16 are rotatably connected to the fixed shafts 4 on either side via pins. Through the transmission action of the connecting plates 16, the movement of the middle support roller 3 synchronously drives the two side support rollers 3 to adjust with the swing frames 2.

[0017] Two guide blocks 9 are welded to one side of the crossbeam 1. Each guide block 9 has a vertically oriented sliding hole inside, and the inner wall of the sliding hole is polished to reduce sliding resistance. Vertically arranged slide rods 11 are slidably connected within the sliding holes of both guide blocks 9. The outer diameter of the slide rod 11 matches the inner diameter of the sliding hole, ensuring that the slide rod 11 can slide smoothly up and down within the sliding hole without lateral deviation. A contact roller 14 is rotatably connected between the tops of the two slide rods 11 via a bearing seat. The axis of the contact roller 14 is parallel to the axis of the support roller 3, and the contact roller 14 is located below the middle support roller 3 and maintains contact with its surface, allowing the movement of the middle support roller 3 to be directly transmitted to the contact roller 14. A second spring 10 is installed between the top of the slide rod 11 and the guide block 9 via a spring seat. The spring seats are welded to the top end face of the slide rod 11 and the upper surface of the guide block 9, respectively. The second spring 10 is sleeved on the outside of the slide rod 11, and the second spring 10 can support the slide rod 11 in its natural state, so that the contact roller 14 always keeps in contact with the middle support roller 3.

[0018] This application can be used in the field of coal mine transportation, or in other fields applicable to this application.

[0019] In another embodiment: Reference Figures 1-3 A belt support device for a coal mine conveyor belt is disclosed, applicable to the coal mine transportation field. Support components are installed between the swing frame 2 and the crossbeam 1 to support and buffer the swing frame 2. The support components include a sleeve 6, a rod 5, and a first spring 7. The sleeve 6 is rotatably connected to an ear plate on one side of the crossbeam 1 via a pin. The ear plate is welded and fixed to the crossbeam 1, ensuring that the sleeve 6 can rotate around the pin. The sleeve 6 has a hollow internal structure. One end of the rod 5 is inserted into the sleeve 6, and the outer diameter of the rod 5 matches the inner diameter of the sleeve 6, allowing the rod 5 to slide smoothly within the sleeve 6. The top of the rod 5 is rotatably connected to the swing frame 2 via a pin. A first spring 7 is installed between the rod 5 and the sleeve 6 via a spring seat. The spring seat is fixed to the bottom end face of the rod 5 and the bottom wall inside the sleeve 6. In its natural state, the first spring 7 can push the rod 5, providing support for the swing frame 2.

[0020] Positioning plates 8 are welded to both ends of the crossbeam 1. The positioning plates 8 are rectangular steel plates and are positioned on the outside of the swing frame 2. When the swing frame 2 rotates to a certain angle, the side of the swing frame 2 will contact the side of the positioning plate 8, thereby limiting the rotation angle of the swing frame 2 and preventing the first spring 7 from being over-compressed and damaged due to excessive rotation angle. It also prevents the swing frame 2 from colliding with other components.

[0021] Two fixing plates 15 are welded to both sides of the crossbeam 1. The fixing plates 15 are steel plates with mounting holes. The mounting holes on the surface of the fixing plates 15 are through holes, and the diameter of the mounting holes matches the bolt holes on the frame of the coal mine conveyor belt, making it easy to fix the entire device to the frame with bolts. Rubber pads are glued to the bottom of the fixing plates 15. The rubber pads are made of wear-resistant nitrile rubber. When the fixing plates 15 are connected to the frame with bolts, the rubber pads can fit tightly between the fixing plates 15 and the frame, increasing the friction between the two and preventing the device from loosening during operation. At the same time, the rubber pads can also absorb some vibration and reduce the noise generated during the operation of the device.

[0022] A rotating shaft 12 is rotatably connected between the bottoms of the two slide rods 11 via a bearing seat. The bearing seat is welded to the bottom of the slide rods 11 to ensure stable rotation of the rotating shaft 12. Multiple tension rollers 13 are fixedly connected to the circumferential surface of the rotating shaft 12 via a key connection. The multiple tension rollers 13 are evenly distributed on the rotating shaft 12, and the axis of the tension rollers 13 is parallel to the axis of the rotating shaft 12. The outer diameter of the tension rollers 13 is adapted to the width of the belt, so that it can fully contact the surface of the belt below. When the contact roller 14 moves downward, it also drives the tension rollers 13 to move downward through the slide rods 11. The tension rollers 13 push the belt below downward, thereby achieving a tensioning effect and preventing the belt from slackening when the support roller 3 moves downward, thus maintaining the conveying effect.

[0023] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A belt support device for a coal mine conveyor belt conveyor, characterized in that, It includes a crossbeam (1), with swing frames (2) hinged at both ends of the crossbeam (1), and three support rollers (3) arranged between the two swing frames (2), with the support rollers (3) distributed in a V-shape; The support roller (3) has a fixed shaft (4) that rotates through the bearing. One end of two fixed shafts (4) is fixed to two swing frames (2) respectively. Both ends of the other fixed shaft (4) are rotatably connected to connecting pieces (16). The two connecting pieces (16) are rotatably connected to the fixed shafts (4) on both sides respectively. Two guide blocks (9) are fixedly connected to one side of the crossbeam (1). Vertically arranged slide rods (11) are slidably connected inside the two guide blocks (9). A contact roller (14) is rotatably connected between the tops of the two slide rods (11). The contact roller (14) is located below and abuts against the middle support roller (3). A second spring (10) is installed between the top of the slide rod (11) and the guide block (9) through a spring seat.

2. The belt support device for a coal mine conveyor belt according to claim 1, characterized in that, A rotating shaft (12) is rotatably connected between the bottoms of the two slide bars (11), and multiple tension rollers (13) are fixedly connected around the circumference of the rotating shaft (12).

3. The belt support device for a coal mine conveyor belt according to claim 1, characterized in that, Support members are provided between the swing frame (2) and the crossbeam (1). The support members include a sleeve (6), which is rotatably connected to one side of the crossbeam (1). A rod (5) is inserted into the sleeve (6), and the top of the rod (5) is rotatably connected to the swing frame (2). A first spring (7) is installed between the rod (5) and the sleeve (6) through a spring seat.

4. The belt support device for a coal mine conveyor belt according to claim 1, characterized in that, Positioning plates (8) are welded to both ends of the crossbeam (1) to limit the angle of the swing frame (2).

5. A belt support device for a coal mine conveyor belt according to claim 1, characterized in that, Two fixing plates (15) are welded on both sides of the crossbeam (1), and the surface of the fixing plates (15) is provided with through mounting holes.

6. The belt support device for a coal mine conveyor belt according to claim 5, characterized in that, The bottom of each fixing piece (15) is glued with a rubber pad.

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