Middle tensioning device

Abstract

The invention provides a middle tensioning device which comprises a sliding frame and a sliding frame guide rail, a tensioning support A and a tensioning support B are arranged at the two ends of the sliding frame guide rail, a threaded guide rod is arranged between the tensioning support A and the tensioning support B, a turnabout drum A is installed on the tensioning support A, a turnabout drum B is arranged on the sliding frame, and a threaded guide rod is arranged on the threaded guide rod. The tensioning support A and the tensioning support B are installed on the belt conveyor and fixed to a middle frame of the belt conveyor in a welded mode. Connection is conducted through the threaded guide rod, the stability of the whole structure is guaranteed, meanwhile, the threaded guide rod of the tensioning device is adjusted to adjust the appropriate tensioning stroke distance, the situation that landing legs are avoided is not needed in the design process, the tensioning support A and the tensioning support B can serve as the landing legs, the landing legs can not be arranged on an over-short belt conveyor, and the design is convenient. The tensioning device is directly adopted as a supporting leg, and the problem that the tensioning device is not easy to install on the belt conveyor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of conveying equipment, and in particular to a middle tensioning device. Background Art

[0002] At present, in the operation of belt conveyors, due to the process limitations in certain occasions, such as reversible conveyors and bag cement conveyors or processes with shorter heights, the tensioning device cannot be set with a vertical tensioning device in the middle of the conveyor corridor, and a spiral tensioning device and a trolley-type tensioning device cannot be set at the tail. As a result, the belt conveyor cannot meet the corresponding work requirements. At present, for the above-mentioned problems of belt conveyors, the tensioning process is generally achieved by installing a tensioning device. For example, the disclosed patent 202123242624.9 discloses a double-roller vertical hydraulic tensioning device, which realizes the tensioning action by connecting a steel wire rope. However, due to material and structural problems, tensioning mechanisms such as steel wire ropes or belts are prone to the risk of breaking, and are very inconvenient to adjust. Fine adjustment cannot be completed, and the installation position must be considered to avoid the legs, otherwise it cannot be installed on the belt conveyor, and the conveying device that is too short cannot be set with legs. The installation of the above-mentioned mechanism is prone to tipping risks. Therefore, it is particularly important to solve the problem that it is difficult to install a tensioning device on a belt conveyor. Summary of the invention

[0003] The purpose of the present invention is to provide a middle tensioning device, which is connected by a threaded guide rod to ensure the stability of the entire structure. At the same time, by adjusting the threaded guide rod of the tensioning device, the distance of the appropriate tensioning stroke can be adjusted. There is no need to consider avoiding the legs during design. The tensioning bracket A and the tensioning bracket B can be used as legs. In the case of a belt conveyor that is too short, there is no need to set the legs. This tensioning device can be directly used as the legs, which solves the problem that it is difficult to install the tensioning device on the belt conveyor.

[0004] The present invention provides a middle tensioning device, comprising a slide and a slide guide rail, wherein tensioning brackets A and tensioning brackets B are arranged at both ends of the slide guide rail, a threaded guide rod is arranged between the tensioning brackets A and the tensioning brackets B, a redirecting roller A is installed on the tensioning bracket A, and a redirecting roller B is arranged on the slide, and the tensioning brackets A and tensioning brackets B are installed on a belt conveyor and are welded and fixed to an intermediate frame of the belt conveyor.

[0005] A further improvement is that the slide rail is connected to the tensioning bracket A and the tensioning bracket B by hexagonal bolts, the hexagonal bolts are fixed by nuts, and special channel steel washers, round washers and spring washers are arranged between the hexagonal bolts and nuts.

[0006] A further improvement is that the redirecting roller A and the redirecting roller B are also connected by hexagonal bolts, and the hexagonal bolts on the redirecting roller A and the redirecting roller B are fixed by double nuts. At the same time, the hexagonal bolts and the double nuts are also installed with special washers for channel steel and round washers.

[0007] A further improvement is that an adjusting screw is provided at one end of the slide rail close to the tensioning bracket B, and the installation position of the entire slide rail can be adjusted by rotating the adjusting screw.

[0008] A further improvement is that a tensioning rod is provided on the tensioning bracket A, and the position of the redirecting roller A is ensured to have redundancy through the tensioning rod.

[0009] A further improvement is that welding convex beams are provided on the bottom sides of the tensioning bracket A and the tensioning bracket B, and the welding strength is increased by welding the convex beams.

[0010] The beneficial effects of the present invention are as follows: when the belt surface height is low and other tensioning devices cannot be used due to process limitations, this tensioning device can be used to connect through a threaded guide rod to ensure the stability of the entire structure. At the same time, the threaded guide rod of the tensioning device can be adjusted to adjust the distance of the appropriate tensioning stroke. There is no requirement for the installation position, and the entire belt can be installed at any section of the entire belt. There is no need to consider avoiding the legs during design, and the tensioning bracket A and the tensioning bracket B can be used as legs. In the case of a too short belt conveyor, legs can be omitted and this tensioning device can be directly used as a leg. The structure is simple and the manufacturing cost is low. The assembly and disassembly are convenient, and the three groups of structures of the tensioning bracket A, the slide rail and the tensioning bracket B are all connected by bolts, which makes subsequent disassembly and replacement more convenient. The spring gasket and double nut structure used can reduce the impact of the vibration generated by the structure during operation on the frame, and it is not easy to loosen, so that the assembly of the overall structure is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention.

[0012] Among them: 1-slide, 2-slide guide rail, 3-tensioning bracket A, 4-tensioning bracket B, 5-threaded guide rod, 6-redirection roller A, 7-redirection roller B, 8-hexagonal head bolt, 9-nut, 10-special washer for channel steel, 11-round washer, 12-spring washer, 13-double nut, 14-adjusting screw, 15-tensioning rod, 16-welded convex beam. DETAILED DESCRIPTION

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] like Figure 1 As shown, this embodiment provides a middle tensioning device, including a slide 1 and a slide rail 2, a tensioning bracket A3 and a tensioning bracket B4 are arranged at both ends of the slide rail 2, a threaded guide rod 5 is arranged between the tensioning bracket A3 and the tensioning bracket B4, a redirecting roller A6 is installed on the tensioning bracket A3, and a redirecting roller B7 is arranged on the slide 1. The tensioning bracket A3 and the tensioning bracket B4 are installed on the belt conveyor and welded and fixed to the middle frame of the belt conveyor. The slide rail 2 is connected with the tensioning bracket A3 and the tensioning bracket B4 by a hexagonal bolt 8, and the hexagonal bolt 8 is fixed by a nut 9, and a special channel steel washer 10, a round washer 11 and a spring washer 12 are arranged between the hexagonal bolt 8 and the nut 9. The redirecting roller A6 and the redirecting roller B7 are also connected by hexagonal bolts 8. The hexagonal bolts 8 on the redirecting roller A6 and the redirecting roller B7 are fixed by double nuts 13. At the same time, the hexagonal bolts 8 and the double nuts 13 are also installed with special washers 10 and round washers 11 for channel steel. An adjustment screw 14 is provided at one end of the slide rail 2 close to the tensioning bracket B4. The installation position of the entire slide rail 2 is adjusted by rotating the adjustment screw 14. A tensioning rod 15 is provided on the tensioning bracket A3. The tensioning rod 15 ensures that there is redundancy in the position of the redirecting roller A6. A welding convex beam 16 is provided on the bottom side of the tensioning bracket A3 and the tensioning bracket B4. The welding convex beam 16 is used to increase the welding strength.

[0015] Installation method: install the carriage on the carriage rail; then connect the carriage rail 2 installed with the carriage 1 with the tension bracket A3 and the tension bracket B4 with hexagonal bolts 8, nuts 9, special washers for channel steel 10, round washers 11 and spring washers 12; then install the threaded guide rod 5 on the assembled tension bracket A3 and tension bracket B4; then connect the redirection roller A6 and the redirection roller B7 with hexagonal bolts 8, double nuts 13, special washers for channel steel 10 and round washers 11; finally, place the tension bracket A3 and the tension bracket B4 at any position of the belt conveyor and weld them with the middle frame of the belt conveyor to complete the installation and use. By adjusting the threaded guide rod 14 of the tensioning device, it can be used to adjust the distance of the appropriate tensioning stroke.

Claims

1. A middle tensioning device, characterized in that: The invention comprises a slide frame (1) and a slide frame guide rail (2), wherein a tensioning bracket A (3) and a tensioning bracket B (4) are arranged at both ends of the slide frame guide rail (2), a threaded guide rod (5) is arranged between the tensioning bracket A (3) and the tensioning bracket B (4), a redirecting roller A (6) is installed on the tensioning bracket A (3), and a redirecting roller B (7) is arranged on the slide frame (1), and the tensioning bracket A (3) and the tensioning bracket B (4) are installed on a belt conveyor and are welded and fixed to an intermediate frame of the belt conveyor.

2. A middle tensioning device according to claim 1, characterized in that: The slide rail (2) is connected to the tension bracket A (3) and the tension bracket B (4) via a hexagonal bolt (8), and the hexagonal bolt (8) is fixed via a nut (9). A channel steel washer (10), a round washer (11) and a spring washer (12) are provided between the hexagonal bolt (8) and the nut (9).

3. A middle tensioning device according to claim 1, characterized in that: The redirecting roller A (6) and the redirecting roller B (7) are also connected by hexagonal bolts (8). The hexagonal bolts (8) on the redirecting roller A (6) and the redirecting roller B (7) are fixed by double nuts (13). At the same time, the hexagonal bolts (8) and the double nuts (13) are also installed with special washers (10) for channel steel and round washers (11).

4. A middle tensioning device according to claim 1, characterized in that: An adjusting screw (14) is provided at one end of the slide rail (2) close to the tensioning bracket B (4), and the installation position of the entire slide rail (2) can be adjusted by rotating the adjusting screw (14).

5. A middle tensioning device according to claim 1, characterized in that: The tensioning bracket A (3) is provided with a tensioning rod (15), and the tensioning rod (15) is used to ensure that the position of the redirecting roller A (6) has redundancy.

6. A middle tensioning device according to claim 1, characterized in that: The bottom sides of the tensioning bracket A (3) and the tensioning bracket B (4) are provided with welding protruding beams (16), and the welding strength is increased by welding the protruding beams (16).

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