Cooling tower belt tensioning device

Abstract

The utility model belongs to the technical field of belt maintenance equipment, and particularly relates to a cooling tower belt tensioning device. Comprising a rack, a motor and a belt are arranged on the rack, a tensioning roller is rotationally arranged on the rack, the tensioning roller abuts against the belt, an elastic tensioning assembly is arranged on the rack and comprises a mounting plate and an elastic piece, the tensioning roller is rotationally mounted on the mounting plate, and the elastic piece is arranged on the mounting plate. And the mounting plate is connected with the rack through the elastic piece. The belt tensioning device aims to solve the problem that the position of a tensioning wheel must be manually adjusted after an existing belt tensioning device is used for a period of time, and use is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt maintenance equipment, and in particular relates to a cooling tower belt tensioning device. Background Art

[0002] Chiller cooling towers are generally arranged in outdoor places such as roofs or terraces. Many cooling towers use belt drive. In actual operation, the cooling tower belt is a rubber product. Under the action of tension, it will undergo plastic deformation and elongation, resulting in a decrease in transmission efficiency. In severe cases, it will cause the belt to fall off, making the cooling tower unable to cool down. In order to prevent the influence of plastic deformation and elongation of the cooling tower belt, maintenance personnel need to frequently adjust the tension of the belt. During the adjustment, the cooling tower must be stopped, which will have a certain impact on the operation of the chiller.

[0003] Chinese patent CN206175585U discloses a belt tensioning mechanism and a braiding machine provided with the belt tensioning mechanism, which provides tensioning force for the belt by arranging a tensioning wheel.

[0004] However, the existing tensioning device must manually adjust the position of the tensioning wheel after being used for a period of time, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a cooling tower belt tensioning device, which is used to solve the problem that the position of the tensioning wheel of the existing belt tensioning device must be manually adjusted after being used for a period of time, which is inconvenient to use.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0007] A cooling tower belt tensioning device comprises a frame, on which a motor and a belt are arranged, a tensioning roller is rotatably arranged on the frame, the tensioning roller abuts against the belt, an elastic tensioning assembly is arranged on the frame, the elastic tensioning assembly comprises a mounting plate and an elastic member, the tensioning roller is rotatably mounted on the mounting plate, and the mounting plate is connected to the frame via the elastic member.

[0008] Preferably, a rotating shaft is fixedly connected to the mounting plate, the rotating shaft is rotatably mounted on the frame, the elastic member is a torsion spring, the torsion spring is sleeved on the rotating shaft, the first end of the torsion spring abuts against the mounting plate, and the second end of the torsion spring abuts against the frame. This arrangement is conducive to applying elastic force to the mounting plate through the torsion spring, so that the roller abuts against the belt and provides tension for the belt.

[0009] Preferably, the frame is provided with a bayonet, and the second end of the torsion spring is arranged in the bayonet. Such arrangement facilitates the installation and fixation of the torsion spring, limits the torsion spring from sliding up and down along the rotating shaft, and is conducive to improving the stability of the structure.

[0010] Preferably, the second end of the torsion spring is detachably connected with an adjustment handle. In this way, by adjusting the handle, the position of the second end can be easily adjusted, the device can be installed and the belt can be replaced, and the torsion spring can be driven to loosen the contact between the frame and the mounting plate, which is convenient for replacing the belt. The structure is simple and practical.

[0011] Preferably, the tensioning roller is located at the output end of the driving wheel on the motor, and the acute angle between the mounting plate and the belt is 45 to 60 degrees. In this way, when the belt is aged and loose, the tensioning roller squeezes the belt to keep it in a tensioned state, the belt is stretched to a certain extent, the angle of the belt wrap is reduced, the transmission efficiency is stable, the structure is simple, and the practicability is strong.

[0012] Preferably, a mounting shaft is rotatably mounted on the front end of the mounting plate through a bearing, and the tensioning roller is sleeved on the mounting shaft. This arrangement allows the tensioning roller to rotate relative to the belt, thereby reducing the reduction in transmission efficiency caused by friction between the tensioning roller and the belt.

[0013] Preferably, the second end is provided with a thread, the adjustment handle is threadedly connected to the second end, one end of the adjustment handle is set to be conical, and the conical surface of the cone abuts against the bayonet. In this way, by rotating the relative position between the conical surface on the adjustment handle and the bayonet, the second end moves in a direction away from / close to the bayonet, thereby adjusting the tensioning force applied to the belt.

[0014] The utility model adopting the above technical solution has the following advantages:

[0015] 1. In this solution, by providing an elastic member, when the tensioning roller applies a tensioning force to the belt, the position of the tensioning roller changes with the length of the belt, which has a good tensioning effect on the belt;

[0016] 2. In this solution, the second end of the torsion spring is detachably connected to the adjustment handle, which is convenient for adjusting the position of the second end; when the position of the second end needs to be adjusted, the second end is inserted into the adjustment handle, and the second end of the torsion spring is clamped into the bayonet by the adjustment handle, which is convenient for installation of the device. The second end of the torsion spring is pulled out of the bayonet by the adjustment handle, so that the torsion spring no longer applies a tensioning force to the mounting plate, which is convenient for replacing the belt, and has a simple structure and strong practicality;

[0017] 3. In this solution, by setting the tensioning roller at the output end of the driving wheel of the motor and setting the angle between the mounting plate and the belt to 45 to 60 degrees, when the belt is aged and loose, the tensioning roller squeezes the belt to keep it in a tensioned state, the belt has a certain elongation, and the angle of the belt wrap is reduced, thereby reducing the influence of the change in belt length on the transmission efficiency. The structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a schematic structural diagram of an embodiment of a cooling tower belt tensioning device of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 This is a schematic diagram of the connection structure between the tensioning roller and the mounting shaft of an embodiment of a cooling tower belt tensioning device of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a cooling tower belt tensioning device embodiment of the utility model after the second end of the torsion spring is pulled out of the bayonet by the adjusting handle;

[0023] The main component symbols are described as follows:

[0024] 1. Frame; 2. Motor; 3. Belt; 4. Tensioning roller; 5. Mounting plate; 6. Elastic member; 61. First end; 62. Second end; 7. Rotating shaft; 8. Bayonet; 9. Mounting shaft; 10. Adjusting handle; 101. Conical surface. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0026] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the figure. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1 to Figure 4 As shown, a cooling tower belt tensioning device of the utility model comprises a frame 1, on which a motor 2 and a belt 3 are arranged, the belt 3 is horizontally driven, a tensioning roller 4 is rotatably arranged on the frame 1, the tensioning roller 4 abuts against the belt 3, an elastic tensioning assembly is arranged on the frame 1, the elastic tensioning assembly comprises a mounting plate 5 and an elastic member 6, the tensioning roller 4 is rotatably mounted on the mounting plate 5, and the mounting plate 5 is connected to the frame 1 through the elastic member 6.

[0028] During the horizontal transmission of the motor 2 through the belt 3, the mounting plate 5 is always subjected to the elastic action of the elastic member 6, driving the tensioning roller 4 to abut against the belt 3, providing tensioning force for the belt 3. When the belt 3 is deformed and elongated, the tensioning roller 4 can still abut against the belt 3 under the action of the elastic member 6, and there is no need to manually adjust the position of the tensioning roller 4, which is convenient to use.

[0029] In this embodiment, the elastic member 6 can be a torsion spring, the mounting plate 5 is fixedly connected with a rotating shaft 7, the rotating shaft 7 is rotatably mounted on the frame 1, the torsion spring is sleeved on the rotating shaft 7, the first end 61 of the torsion spring abuts against the mounting plate 5, and the second end 62 of the torsion spring abuts against the frame 1. The first end 61 and the second end 62 of the torsion spring abut against the mounting plate 5 and the frame 1 respectively, which is conducive to applying an elastic force to the mounting plate 5 through the torsion spring, so that the roller abuts against the belt 3, and provides tension for the belt 3.

[0030] In other embodiments of the present application, the elastic member 6 may also be an elastic pad, which may be elastic plastic or elastic rubber. A guide groove is provided on the frame 1, and the elastic pad is fixedly connected to the mounting plate 5, and the mounting plate 5 is slidably arranged in the guide groove. Under the action of the elastic pad, the tensioning roller 4 is always in contact with the belt 3, which has a good tensioning effect on the belt 3.

[0031] In this embodiment, a bayonet 8 is provided on the frame 1, and the second end 62 of the torsion spring is clamped in the bayonet 8, which facilitates the installation and fixation of the torsion spring and limits the torsion spring from sliding up and down along the rotating shaft 7, which is beneficial to improving the stability of the structure, and the structure is simple and practical.

[0032] In this embodiment, the second end 62 of the torsion spring is detachably connected with an adjustment handle, and a mounting hole is provided on the central axis of the adjustment handle. When the position of the second end 62 needs to be adjusted, the adjustment handle can be inserted into the mounting hole. The position of the second end 62 can be adjusted by adjusting the handle, and the structure is simple and practical. When installing the belt 3 pulley tensioning device, the second end 62 can be pushed out of the bayonet 8 by adjusting the handle, so that the torsion spring is driven to loosen the abutment effect on the frame 1 and the mounting plate 5, which is convenient for replacing the belt 3; after the replacement is completed, the second end 62 only needs to be pushed back into the bayonet 8 to achieve the installation and fixation of the torsion spring, and the structure is simple and practical.

[0033] In other embodiments of the present application, the second end 62 is provided with a thread, the adjustment handle 10 is threadedly connected to the second end 62, one end of the adjustment handle is set to be tapered, and the tapered surface 101 of the tapered handle abuts against the bayonet 8. By rotating the relative position between the tapered surface 101 on the adjustment handle 10 and the bayonet 8, the second end 62 moves in a direction away from / close to the bayonet 8, and the magnitude of the tensioning force applied to the belt is adjusted.

[0034] In this embodiment, the tensioning roller 4 is located at the output end of the driving wheel on the motor 2, and the acute angle between the mounting plate 5 and the belt 3 is 45 to 60 degrees. When the belt 3 is aged and loose, the tensioning roller 4 squeezes the belt 3 to keep it in a tensioned state, the belt 3 is elongated to a certain extent, and the angle of the belt 3 wrapping angle is reduced, which reduces the influence of the change in the length of the belt 3 on the transmission efficiency, and has a simple structure and strong practicality. Preferably, in this embodiment, the angle between the mounting plate 5 and the belt 3 is 60 degrees, and the tensioning force applied by the tensioning roller 4 to the belt 3 has the best effect.

[0035] In this embodiment, the front end of the mounting plate 5 is rotatably mounted with a mounting shaft 9 through a bearing, and the tensioning roller 4 is sleeved on the mounting shaft 9. The tensioning roller 4 can rotate relative to the belt 3, reducing the reduction in transmission efficiency caused by the friction between the tensioning roller 4 and the belt 3.

[0036] The principles of this application are:

[0037] When the motor 2 is horizontally transmitted through the belt 3, the mounting plate 5 is always subjected to the elastic action of the torsion spring, driving the tensioning roller 4 to abut against the belt 3, providing tensioning force for the belt 3. When the belt 3 is deformed and elongated, the tensioning roller 4 can still abut against the belt 3 under the action of the torsion spring, and there is no need to manually adjust the position of the tensioning roller 4.

[0038] The above is a detailed introduction to a cooling tower belt tensioning device provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A cooling tower belt tensioning device, comprising a frame (1), a motor (2) and a belt (3) being arranged on the frame (1), a tensioning roller (4) being rotatably arranged on the frame (1), the tensioning roller (4) being in contact with the belt (3), characterized in that: The frame (1) is provided with an elastic tensioning assembly, which comprises a mounting plate (5) and an elastic member (6); the tensioning roller (4) is rotatably mounted on the mounting plate (5); and the mounting plate (5) is connected to the frame (1) via the elastic member (6).

2. A cooling tower belt tensioner according to claim 1, characterized in that: A rotating shaft (7) is fixedly connected to the mounting plate (5), and the rotating shaft (7) is rotatably mounted on the frame (1). The elastic member (6) is a torsion spring, and the torsion spring is sleeved on the rotating shaft (7). The first end (61) of the torsion spring abuts against the mounting plate (5), and the second end (62) of the torsion spring abuts against the frame (1).

3. A cooling tower belt tensioning device according to claim 2, characterized in that: The frame (1) is provided with a bayonet (8), and the second end (62) of the torsion spring is arranged in the bayonet (8).

4. A cooling tower belt tensioner according to claim 3, characterized in that: The second end (62) of the torsion spring is detachably connected to an adjustment handle (10).

5. A cooling tower belt tensioner according to claim 1, characterized in that: The tensioning roller (4) is located at the output end of the driving wheel on the motor (2), and the acute angle between the mounting plate (5) and the belt (3) is 45 to 60 degrees.

6. A cooling tower belt tensioner according to claim 1, characterized in that: A mounting shaft (9) is rotatably mounted on the front end of the mounting plate (5) via a bearing, and the tensioning roller (4) is sleeved on the mounting shaft (9).

7. A cooling tower belt tensioner according to claim 4, characterized in that: The second end head (62) is provided with a thread, and one end of the adjustment handle (10) is configured to be conical, and the conical surface (101) of the cone abuts against the bayonet.

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