Automatic cable tensioning device for chain conveyor

Abstract

The present invention discloses an automatic cable tensioning device for a chain plate conveyor, which includes a mounting plate, guide rails, and guide rods. There are two guide rails, which are fixedly installed on the mounting plate. The guide rods are slidably connected to the two guide rails. One end of the guide rod extends out of the mounting plate, and a guide wheel and a tensioning wheel assembly are installed at this end. A limiting device is also provided on the mounting plate, and the limiting device is used to limit the horizontal displacement of the guide rod. The mounting plate is fixedly installed on the inner wall of the chain plate conveyor housing. It also includes a tensioning spring. One end of the tensioning spring is fixedly connected to the end of the guide rod where the guide wheel is provided, and the other end is fixed on the inner wall of the chain plate conveyor housing. The present invention can keep the cable in a tensioned state all the time, effectively preventing problems such as cable sagging and winding.

Description

Technical Field

[0001] The present invention relates to a tensioning device, and more particularly to an automatic cable tensioning device for a chain plate conveyor. Background Art

[0002] In the production of the tobacco industry, after the finished cigarettes are transported out of the high-rise warehouse, the robot unloads the stack and enters the sorting line, and finally is sorted to different outbound ports for loading and sending to all parts of the country. There are multiple chain plate conveyors configured in the finished product outbound area for the final loading operation of the finished cigarettes.

[0003] Since the chain plate conveyor is divided into multiple levels, and each level has an automatic telescopic function, the power supply cable needs to be telescoped along with the chain plate conveyor. Fixed pulleys are provided at both ends of each level of the chain plate conveyor, and the pulleys play a role in guiding the cable. During daily use, when the chain plate conveyor extends or contracts, the cable often gets entangled or sags and gets stuck in the drive shaft, etc., resulting in the power supply cable being forcibly pulled off, the equipment stopping operation, seriously affecting the outbound efficiency of the finished cigarettes, and at the same time there are serious safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic cable tensioning device for a chain plate conveyor to solve the technical problems in the prior art, which can keep the cable in a tensioned state all the time and effectively prevent problems such as cable sagging and entanglement.

[0005] The present invention provides an automatic cable tensioning device for a chain plate conveyor, including a mounting plate, guide rails and guide rods. There are two guide rails, which are fixedly installed on the mounting plate. The guide rods are slidably connected to the two guide rails. One end of the guide rod extends out of the mounting plate, and a guide wheel and a tensioning wheel assembly are installed at this end. A limiting device is also provided on the mounting plate, and the limiting device is used to limit the horizontal displacement of the guide rod; the mounting plate is fixedly installed on the inner wall of the chain plate conveyor housing, and a tensioning spring is further included. One end of the tensioning spring is fixedly connected to the end of the guide rod where the guide wheel is provided, and the other end is fixed to the inner wall of the chain plate conveyor housing.

[0006] In the above-mentioned automatic cable tensioning device for a chain plate conveyor, preferably, the tensioning wheel assembly includes a first mounting arm, a second mounting arm and a tensioning wheel. The guide wheel is rotatably installed on the guide rod through a first pin shaft. The first mounting arm is fixedly installed on the first pin shaft. The second mounting arm is rotatably connected to the first mounting arm through a second pin shaft, and a torsion spring is provided on the second pin shaft; the tensioning wheel is rotatably installed on the second mounting arm.

[0007] In the above-mentioned automatic cable tensioning device for a chain plate conveyor, preferably, the included angle between the first mounting arm and the second mounting arm is 90 degrees in the natural state.

[0008] In the aforementioned automatic cable tensioning device for a chain plate conveyor, preferably, the cross-sectional shape of the guide rail is "L-shaped", and the two guide rails are parallel to each other and are both arranged in the horizontal direction, and are fixed to the mounting plate by screws.

[0009] In the aforementioned automatic cable tensioning device for a chain plate conveyor, preferably, the limiting device includes a limiting seat and a limiting rod. The limiting seat is arranged on the moving path of the guide rod. The limiting seat is provided with a threaded hole, and the limiting rod is threadedly connected to the limiting seat through the threaded hole, and the limiting rod is arranged in the horizontal direction.

[0010] In the aforementioned automatic cable tensioning device for a chain plate conveyor, preferably, the diameter of the guide wheel is larger than the diameter of the tensioning wheel, and limiting grooves are formed on the circumferential walls of both of them.

[0011] Compared with the prior art, the present invention includes a mounting plate, guide rails and a guide rod. The mounting plate is fixedly installed on the inner wall of the chain plate conveyor housing. Using the present invention to replace the guide pulleys at both ends of the existing chain plate conveyor, two guide rails are arranged on the mounting plate, and the guide rod is slidably connected to the two guide rails, so that the guide rod can move in the horizontal direction. One end of the guide rod extends out of the mounting plate, and a guide wheel and a tensioning wheel assembly are installed at this end. A limiting device is also provided on the mounting plate, and a tensioning spring is also arranged on the inner wall of the chain plate conveyor housing. The tensioning spring is fixedly connected to the end of the guide rod where the guide wheel is provided.

[0012] Under the action of the guide wheel, the tensioning wheel assembly and the tensioning spring, no matter which direction the chain plate conveyor moves, it can effectively ensure that the cable is in a taut state, effectively solving problems such as cable sagging and entanglement in the prior art. Ensure that the chain plate conveyor can always operate normally. Description of the Drawings

[0013] Figure 1 is the front view of the present invention;

[0014] Figure 2 is the top view of the present invention.

[0015] Description of the Reference Numerals: 1 - tensioning wheel, 2 - tensioning spring, 3 - guide wheel, 4 - first mounting arm, 5 - second pin shaft, 6 - mounting plate, 7 - guide rail, 8 - guide rod, 9 - limiting seat, 10 - mounting bolt, 11 - limiting rod, 12 - first pin shaft, 13 - second mounting arm, 14 - cable. Detailed Embodiments

[0016] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0017] Embodiment of the present invention: As Figure 1 and Figure 2 shown, an automatic tensioning device for the cable of a chain plate conveyor includes a mounting plate 6, guide rails 7 and guide rods 8. The mounting plate 6 is preferably made of a steel plate with a thickness of 3 mm. To prevent it from rusting, black paint can be sprayed on its surface and galvanized treatment can be carried out. Other components can be made of stainless steel; There are two guide rails 7, and the two guide rails 7 are fixedly installed on the mounting plate 6. The guide rod 8 is slidably connected to the two guide rails 7. One end of the guide rod 8 extends out of the mounting plate 6, and a guide wheel 3 and a tensioning wheel assembly are installed at this end. A limiting device is also provided on the mounting plate 6, and the limiting device is used to limit the horizontal displacement of the guide rod 8; The mounting plate 6 is fixedly installed on the inner wall of the chain plate conveyor housing through mounting bolts 10. It also includes a tension spring 2. One end of the tension spring 2 is fixedly connected to the end of the guide rod 8 where the guide wheel 3 is provided, and the other end is fixed to the inner wall of the chain plate conveyor housing.

[0018] For the sake of easy understanding, the present invention will be further described below in conjunction with Figure 1 When the chain plate conveyor moves to the Figure 1 right side, the cable 14 presses against the tensioning wheel assembly and the guide wheel 3, and causes the guide rod 8 to slide in the direction close to the limiting device. When the guide rod 8 contacts the limiting device, it stops sliding. At this time, the tensioning wheel assembly supports the cable 14 upward, making the cable 14 in a taut state. When the chain plate conveyor moves to the Figure 1 left side, the pressure exerted by the cable 14 on the tensioning wheel assembly and the guide wheel 3 disappears, and the cable 14 becomes slack. At this time, under the pulling force of the tension spring 2, the guide rod 8 drives the guide wheel 3 and the tensioning assembly to move to the left. At the same time, the tensioning assembly gives an upward force to the cable 14 to keep the cable 14 in a taut state; effectively preventing the cable 14 from sagging or getting entangled. Ensuring the normal operation of the chain plate conveyor.

[0019] In a specific embodiment, the tensioning wheel assembly includes a first mounting arm 4, a second mounting arm 13 and a tensioning wheel 1. The guide wheel 3 is rotatably installed on the guide rod 8 through a first pin shaft 12. The first mounting arm 4 is fixedly installed on the first pin shaft 12. The second mounting arm 13 is rotatably connected to the first mounting arm 4 through a second pin shaft 5. A torsion spring (the torsion spring is not shown in the figure) is provided on the second pin shaft 5; The tensioning wheel 1 is rotatably installed on the second mounting arm 13. Preferably, the tensioning wheel 1 is arranged above the guide wheel 3. In the natural state, the included angle between the first mounting arm 4 and the second mounting arm 13 is 90 degrees.

[0020] When the chain plate conveyor moves to the right, the function of the torsion spring is to overcome the pressure exerted by the cable 14 on the tensioning wheel 1. When the chain plate conveyor moves to the left, the function of the torsion spring is to provide an upward supporting force for the cable 14, thereby preventing the cable 14 from sagging. It should be noted that in order to prevent the cable 14 from detaching from the tensioning wheel 1 and the guide wheel 3, preferably, both of them adopt wheel bodies with limiting grooves on the circumferential wall, and the diameter of the guide wheel 3 is preferably larger than that of the tensioning wheel 1.

[0021] Furthermore, the cross-sectional shape of the guide rail 7 is "L"-shaped. The two guide rails 7 are parallel to each other and are both arranged in the horizontal direction, and are fixed to the mounting plate 6 by screws. The guide rail 7 is arranged in a detachable manner, which has the advantage of being convenient for maintenance. Moreover, it is convenient for the disassembly and assembly of the guide rod 8.

[0022] Even further, the limiting device includes a limiting seat 9 and a limiting rod 11. The limiting seat 9 is arranged on the moving path of the guide rod 8. The limiting seat 9 is provided with a threaded hole, and the limiting rod 11 is threadedly connected to the limiting seat 9 through the threaded hole. The limiting rod 11 is arranged in the horizontal direction. As the usage time of the chain plate conveyor increases, the length of the cable 14 will gradually increase, and as the working temperature changes, it will also affect the length of the cable 14. Therefore, through the arrangement of the limiting seat 9 and the limiting rod 11, the displacement amount of the guide rod 8 in the horizontal direction can be limited according to requirements, so as to ensure that the tension of the cable 14 meets the requirements.

[0023] The structure, features and function effects of the present invention have been described in detail based on the embodiments shown in the drawings. The above is only the preferred embodiment of the present invention, but the present invention is not limited to the scope shown in the drawings. Any changes made according to the concept of the present invention, or equivalent embodiments modified into equivalent changes, still within the spirit covered by the description and the drawings, shall be within the protection scope of the present invention.

Claims

1. An automatic cable tensioning device for a chain conveyor, characterized in that: It includes a mounting plate (6), guide rails (7) and guide rods (8). There are two guide rails (7) which are fixedly mounted on the mounting plate (6). The guide rods (8) are slidably connected to the two guide rails (7). One end of the guide rod (8) extends out of the mounting plate (6), and a guide wheel (3) and a tension wheel assembly are mounted at this end. A limiting device is also provided on the mounting plate (6), and the limiting device is used to limit the horizontal displacement of the guide rod (8); The mounting plate (6) is fixedly mounted on the inner wall of the chain conveyor housing. It also includes a tension spring (2). One end of the tension spring (2) is fixedly connected to the end of the guide rod (8) where the guide wheel (3) is provided, and the other end is fixed on the inner wall of the chain conveyor housing; The tension wheel assembly includes a first mounting arm (4), a second mounting arm (13) and a tension wheel (1). The guide wheel (3) is rotatably mounted on the guide rod (8) through a first pin shaft (12). The first mounting arm (4) is fixedly mounted on the first pin shaft (12). The second mounting arm (13) is rotatably connected to the first mounting arm (4) through a second pin shaft (5), and a torsion spring is provided on the second pin shaft (5); The tension wheel (1) is rotatably mounted on the second mounting arm (13); The included angle between the first mounting arm (4) and the second mounting arm (13) is 90 degrees in the natural state; The cross-sectional shape of the guide rail (7) is "L" shaped. The two guide rails (7) are parallel to each other and are both arranged horizontally, and are fixed on the mounting plate (6) by screws.

2. The automatic cable tensioning device for the chain plate conveyor according to claim 1, wherein: The limiting device includes a limiting seat (9) and a limiting rod (11). The limiting seat (9) is arranged on the moving path of the guide rod (8). The limiting seat (9) is provided with a threaded hole, and the limiting rod (11) is threadedly connected to the limiting seat (9) through the threaded hole. The limiting rod (11) is arranged horizontally.

3. The automatic cable tensioning device for the chain plate conveyor according to claim 1, characterized in that: The diameter of the guide wheel (3) is larger than that of the tension wheel (1), and limiting grooves are formed on the circumferential walls of both of them.

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