Belt tensioning device for conveyor

Abstract

The utility model discloses a belt tensioning device for a conveyor, the conveyor is composed of a moving part and a fixed part which are connected in a sliding mode, belt rollers are installed on the moving part and the fixed part in a rotating mode, the belt tensioning device further comprises a driving device installed on the conveyor, and the driving device controls the moving part to move on the fixed part; the driving device comprises a motor, a rotating shaft, commutators, a transmission shaft, a gearbox and a ball screw pair, the motor is installed on the moving part, the rotating shaft is rotationally installed on the moving part and connected with the power output end of the motor, the two commutators are installed on the moving part, one ends of the two commutators are connected with the two ends of the rotating shaft respectively, and the other ends of the two commutators are connected with the transmission shaft. The transmission shaft is connected with the other end of the commutator, the gearbox is installed on the moving part, the power input end of the gearbox is connected with the transmission shaft, a lead screw of the ball screw pair is connected with the power output end of the gearbox, and balls of the ball screw pair are installed on the fixed part. The device is small in occupied space, external in structure and convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of belt tensioning equipment, in particular to a belt tensioning device for a conveyor. Background Art

[0002] Enclosed belt conveyors are commonly used in grain conveying machinery. They not only avoid dust but also are suitable for outdoor environments in inclement weather. After a period of use, belt conveyors may experience shortening of the distance between the belt rollers or belt stretching and deformation. These factors can cause the belt to loosen, affecting its proper function and even causing wear and tear on the equipment, increasing maintenance costs.

[0003] In the prior art, for example, the Chinese utility model patent application number CN202121688536.9, entitled "Conveyor Line Group," employs a lower tensioning roller that moves vertically up and down to achieve belt tensioning. This adjustment method generally provides ample space for movement on non-enclosed belt conveyors. However, for enclosed belt conveyors, if this tensioning structure is built-in, it takes up considerable space and is difficult to install and maintain. If the tensioning structure is external, achieving a high degree of containment is difficult. Therefore, a belt tensioning device suitable for enclosed belt conveyors is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide a belt tensioning device for a conveyor to solve the problem that a general belt tensioning structure is not suitable for a closed belt conveyor, or takes up more space, is difficult to install and maintain, or fails to achieve good sealing performance.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A belt tensioning device for a conveyor, comprising a conveyor, the conveyor comprising a moving part and a fixed part connected in a sliding manner, wherein belt rollers are rotatably mounted on both the moving part and the fixed part, and further comprising a driving device mounted on the conveyor, the driving device controlling the movement of the moving part on the fixed part; wherein,

[0007] The driving device includes an electric motor, a rotating shaft, a commutator, a transmission shaft, a gear box and a ball screw pair. The electric motor is mounted on the moving part, the rotating shaft is rotatably mounted on the moving part, and the rotating shaft is connected to the power output end of the electric motor. Two commutators are mounted on the moving part, and one end of the two commutators is respectively connected to the two ends of the rotating shaft, and the transmission shaft is connected to the other end of the commutator. The gear box is mounted on the moving part, and the power input end of the gear box is connected to the transmission shaft. The screw of the ball screw pair is connected to the power output end of the gear box, and the balls of the ball screw pair are mounted on the fixed part.

[0008] A further technical solution is: the gear box is composed of a housing and a bevel gear pair that meshes with each other and is rotatably mounted on the housing, and the bevel gear pair is connected to the transmission shaft and the lead screw respectively.

[0009] A further technical solution is that the number of the gear boxes and the number of the ball screw pairs are at least four.

[0010] A further technical solution is that an inspection door is provided on the conveyor.

[0011] A further technical solution is: a pressure sensor is provided on the mounting seat of the belt roller, and the pressure sensor is electrically connected to the motor through a controller.

[0012] A further technical solution is: an anti-slip pin is provided on the moving part, and the anti-slip pin is slidably matched with the limiting groove on the fixed part.

[0013] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0014] This utility model provides a conveyor belt tensioner. This device divides the housing enclosing the conveyor belt into a moving portion and a fixed portion. An electric motor controls the operation of the drive mechanism. The motor drives the rotating shaft, which, thanks to a commutator, changes the direction of the shaft's power and simultaneously drives the transmission shaft. This initiates the movement of a ball screw pair, which in turn moves the balls on the screw, moving the moving portion on the fixed portion, controlling the distance between the belt rollers and thereby achieving belt tensioning. The device occupies a small space and is externally located, making it easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a belt tensioning device for a conveyor.

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the structure from another perspective.

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the structure from a positive perspective.

[0018] Figure numerals: 1. Moving part; 2. Fixed part; 3. Belt roller; 4. Driving device; 5. Electric motor; 6. Rotating shaft; 7. Commutator; 8. Transmission shaft; 9. Gear box; 10. Ball screw pair; 11. Screw; 12. Ball; 13. Inspection door; 14. Mounting seat; 15. Pressure sensor; 16. Anti-drop pin. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] This embodiment Figure 1 、 Figure 2 and Figure 3 As shown, a belt tensioning device for a conveyor includes a conveyor, which consists of a moving part 1 and a fixed part 2 that are slidably connected. Belt rollers 3 are rotatably installed on the moving part 1 and the fixed part 2. The conveyor also includes a driving device 4 installed on the conveyor, which controls the movement of the moving part 1 on the fixed part 2; the driving device 4 includes a motor 5, a rotating shaft 6, a commutator 7, a transmission shaft 8, a gear box 9 and a ball screw pair 10. The motor 5 is installed on the moving part 1, and the rotating shaft 6 is rotatably installed on the moving part 1, and the rotating shaft 6 is connected to the power output end of the motor 5. Two commutators 7 are installed on the moving part 1, and one end of the two commutators 7 is respectively connected to the two ends of the rotating shaft 6, and the transmission shaft 8 is connected to the other end of the commutator 7. The gear box 9 is installed on the moving part 1, and the power input end of the gear box 9 is connected to the transmission shaft 8. The screw 11 of the ball screw pair 10 is connected to the power output end of the gear box 9, and the balls 12 of the ball screw pair 10 are installed on the fixed part 2.

[0027] If the distance between the belt rollers 3 on the moving part 1 and the fixed part 2 is too small, or if the belt is stretched and deformed over time, causing it to become too loose, the motor 5 can be started. This inputs power to the gearbox 9 via the rotating shaft 6, commutator 7, and drive shaft 8. This causes the lead screw 11 on the gearbox 9 to rotate, and the ball bearings 12 to move back and forth on the lead screw 11, moving the moving part 1 on the fixed part 2, thereby controlling the distance between the belt rollers 3 and achieving belt tensioning. This device occupies a small space and is externally located, making it easy to install and maintain.

[0028] Preferably, the gear box 9 is composed of a housing and a bevel gear pair that meshes with each other and is rotatably mounted on the housing. The bevel gear pair is connected to the transmission shaft 8 and the lead screw 11 respectively.

[0029] Bevel gear pairs are used to change the direction of force transmission.

[0030] Preferably, the number of the gear boxes 9 and the number of the ball screw pairs 10 are at least four.

[0031] There are four gear boxes 9 and four ball screw pairs 10, which are respectively located near the four corners of the conveyor to ensure that the force of the ball screw pairs 10 on the conveyor is evenly distributed, thereby ensuring the smooth movement of the moving part 1.

[0032] Preferably, an inspection door 13 is provided on the conveyor.

[0033] It is convenient for staff to check the internal situation of the belt conveyor through the inspection door 13.

[0034] Preferably, a pressure sensor 15 is provided on the mounting seat 14 of the belt roller 3 , and the pressure sensor 15 is electrically connected to the motor 5 through a controller.

[0035] A pressure sensor 15 is provided between the mounting seat 14 and the conveyor, so as to know the pressure on the mounting seat 14 and thus the tension of the belt, and then the automatic control of the device can be realized with the help of a controller.

[0036] Preferably, an anti-dropout pin 16 is provided on the moving part 1 , and the anti-dropout pin 16 is slidably engaged with the limiting groove on the fixing part 2 .

[0037] The anti-dropout pin 16 is slidably mounted on the moving part 1 , and the moving part 1 is slidably mounted on the fixed part 2 . The anti-dropout pin 16 is in the limiting groove of the fixed part 2 to prevent the moving part 1 and the fixed part 2 from being separated.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A belt tensioning device for a conveyor, comprising a conveyor, wherein the conveyor is composed of a moving part (1) and a fixed part (2) connected in a sliding manner, wherein belt rollers (3) are rotatably mounted on both the moving part (1) and the fixed part (2), and wherein: It also includes a driving device (4) installed on the conveyor, wherein the driving device (4) controls the movement of the moving part (1) on the fixed part (2); wherein, The driving device (4) comprises a motor (5), a rotating shaft (6), a commutator (7), a transmission shaft (8), a gear box (9) and a ball screw pair (10), wherein the motor (5) is mounted on the moving part (1), the rotating shaft (6) is rotatably mounted on the moving part (1), and the rotating shaft (6) is connected to the power output end of the motor (5), two commutators (7) are mounted on the moving part (1), and one end of the two commutators (7) is respectively connected to the two ends of the rotating shaft (6), the transmission shaft (8) is connected to the other end of the commutator (7), the gear box (9) is mounted on the moving part (1), and the power input end of the gear box (9) is connected to the transmission shaft (8), the screw (11) of the ball screw pair (10) is connected to the power output end of the gear box (9), and the balls (12) of the ball screw pair (10) are mounted on the fixed part (2).

2. The conveyor belt tensioning device according to claim 1, characterized in that: The gear box (9) is composed of a housing and a bevel gear pair that meshes with each other and is rotatably mounted on the housing. The bevel gear pair is connected to the transmission shaft (8) and the lead screw (11) respectively.

3. The conveyor belt tensioning device according to claim 1, characterized in that: The number of the gear boxes (9) and the number of the ball screw pairs (10) are at least four.

4. The conveyor belt tensioning device according to claim 1, characterized in that: An inspection door (13) is provided on the conveyor.

5. The conveyor belt tensioning device according to claim 1, characterized in that: A pressure sensor (15) is provided on the mounting seat (14) of the belt roller (3), and the pressure sensor (15) is electrically connected to the motor (5) via a controller.

6. The conveyor belt tensioning device according to claim 1, characterized in that: An anti-dropout pin (16) is provided on the moving part (1), and the anti-dropout pin (16) is slidably engaged with the limiting groove on the fixed part (2).

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