Connecting structure of fan

Abstract

The utility model discloses a fan connecting structure, belongs to the technical field of fans, and discloses fan shaft rods and a flexible coupler which are arranged at the top ends of fans and used for connection, and the flexible coupler is arranged between the two fan shaft rods and used for conducting connection work and completing connection work between fans and connection work between the fans and connection work between the fans and a motor. A mounting shaft rod is further arranged outside the fan shaft rod and used for moving outside the mounting shaft rod, and the effect of controlling the length of the fan shaft rod is achieved. The flexible coupling has the beneficial effects that the mounting shaft rod is arranged outside the fan shaft rod and can move front and back at the top end of the fan shaft rod, so that the distance between the fan shaft rods can be reduced when the mounting shaft rod moves front and back, and the effect of facilitating connection of the flexible coupling is achieved; the fan can be firstly mounted and then connected, so that the operation is convenient, and the fan does not need to be firstly supported.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a connection structure of a fan. Background Art

[0002] The fan is installed on the drive motor shaft. Generally, only two impellers can be installed on one drive motor. In order to increase the air volume, it is necessary to add a power unit to increase the power and energy consumption. Therefore, a fan that combines the fan and the volute into an independent unit has appeared on the market. The fans can be directly connected in series to increase or decrease the number of fans, thereby avoiding increasing the power and energy consumption. However, when the fans are connected in series, a connecting structure is required to complete the connection.

[0003] When fans on the current market are connected in series, they are only connected through couplings. However, when the couplings are connected between fans, the couplings need to be installed before the fans can be installed. Therefore, when the couplings are connected, staff assistance is required to support and position the fans. The entire process requires staff to be in a working state all the time, which is labor-intensive and complicated to operate. Summary of the Invention

[0004] One of the purposes of this application is to provide a connection structure for a fan to solve the problem that when connecting a fan on the existing market, the coupling needs to be connected first before the fan is completed. The entire process requires workers to perform auxiliary support positioning all the time, and the operation is too complicated.

[0005] In order to achieve the above objectives, the technical solution adopted in this application is: a connection structure of a fan, including a fan shaft and a flexible coupling arranged at the top of the fan for connection, the flexible coupling is arranged in the middle of the two fan shafts, and is used for connection work to complete the connection work between fans and fans and fans and motors. An installation shaft is also provided on the outside of the fan shaft, which is used to move outside the installation shaft to achieve the effect of controlling the length of the fan shaft.

[0006] Preferably, the fan shaft and the mounting shaft are limited by a limiting mechanism, and the inner side of the mounting shaft is inlaid with engaging grooves at equal angles.

[0007] Preferably, the fan shaft includes a fixed shaft, an intermediate shaft and a connecting shaft, and the fixed shaft, the intermediate shaft and the connecting shaft are coaxially installed as a whole.

[0008] Preferably, the intermediate shaft comprises an intermediate shaft cylinder, a reserved groove and a hollow groove. The intermediate shaft cylinder is arranged in a cylindrical structure with a hollow groove arranged inside. The outer wall of the intermediate shaft cylinder is also penetrated by reserved grooves at equal angles.

[0009] Preferably, the limiting mechanism is arranged inside the reserved groove and the hollow groove, and it includes a rotating shaft, a lifting mechanism, a limiting block and a driving shaft. The rotating shaft bearing is arranged inside the hollow groove, and its top end passes through the outside of the intermediate shaft cylinder and is arranged inside the connecting shaft. The top end of the rotating shaft is integrally installed with a driving shaft for driving the rotating shaft on the outside to rotate.

[0010] Preferably, lifting mechanisms are distributed at equal angles on the outside of the rotating shaft, and a limit block is provided at the top of the lifting mechanism. The limit block can move up and down inside the hollow groove, and the limit block and the engaging groove are engaged with each other.

[0011] Preferably, the lifting mechanism includes two movable sleeves, a connecting shaft and a rotating rod. The two movable sleeves are symmetrically arranged on the outside of the rotating shaft. The cross-sections of the two movable sleeves are arranged in a rectangular structure. A through thread groove is arranged in the middle and is threadedly connected to the threaded structure symmetrically and oppositely arranged on the outer wall of the rotating shaft. A connecting shaft is arranged at the top of the movable sleeve to connect with the rotating rod. There are two rotating rods, and the two rotating rods are arranged in a "V" shape.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) An installation shaft is provided on the outside of the fan shaft, which can move forward and backward at the top of the fan shaft. Therefore, when it moves forward and backward, the distance between the fan shafts can be reduced, thereby achieving the effect of facilitating the connection of the flexible coupling. The fan position can be installed first, and then the connection work can be carried out. The operation is convenient and there is no need to support the fan first. After the connection of the fan shafts of the two is completed, the fan installation work can be carried out. Therefore, the entire installation process does not require long-term manual support, and the operation is more convenient.

[0014] (2) After the installation shaft is moved to a suitable position on the fan shaft, it can be limited by the limiting mechanism, thereby ensuring that when the flexible coupling drives the installation shaft to rotate, it can also drive the fan shaft to rotate, completing the connection work of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the half-section structure of the fan shaft of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0018] Figure 4 This is a partially enlarged schematic diagram of the half-section structure of the connection between the connecting shaft and the intermediate shaft of the present invention.

[0019] In the figure: 1, fan shaft; 11, fixed shaft; 12, intermediate shaft; 121, intermediate shaft tube; 122, reserved groove; 123, hollow groove; 13, connecting shaft;

[0020] 2. Install the shaft; 21. Engagement slot;

[0021] 3. Limiting mechanism; 31. Rotating shaft; 32. Lifting mechanism; 321. Moving sleeve; 322. Connecting shaft; 323. Rotating rod; 33. Limiting block; 34. Driving shaft;

[0022] 4. Flexible coupling. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating the orientation and position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application 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, and cannot be understood as limiting the specific scope of protection of this application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] One of the preferred embodiments of this application is as follows: Figures 1 to 4As shown, a fan connection structure includes a fan shaft 1 and a flexible coupling 4 provided at the top of the fan for connection. The flexible coupling 4 is provided between the two fan shafts 1 for connection work, completing the connection work between the fans and the fans and the fans and the motor. The outside of the fan shaft 1 is further provided with a mounting shaft 2 for moving outside the mounting shaft 2 to achieve the effect of controlling the length of the fan shaft 1.

[0027] The present application provides a fan connection structure with a mounting shaft 2. When using the fan, first, when connecting the fans, the two fans can be installed in appropriate positions, and the size between the two fans can be controlled to be roughly the same as the size of the flexible coupling 4. After that, the fan shafts 1 at the top ends of the two fans can be installed through the flexible coupling 4.

[0028] During installation, when the size between the fans is too large and the size of the flexible coupling 4 is not enough for connection, at this time, it is only necessary to control the installation shaft 2 outside the fan shaft 1 to move outside it, thereby achieving the effect of reducing the size between the two fan shafts 1, and thus completing the effect of connection through the flexible coupling 4. The whole process first fixes the position of the fan and then connects it. The position adjustment work can be done directly through the installation shaft 2, and the staff does not need to support the fan for a long time, and the operation is more convenient.

[0029] Among them, according to Figure 2-4 As shown, the fan shaft 1 and the mounting shaft 2 are limited by a limiting mechanism 3, and the inner side of the mounting shaft 2 is also inlaid with engaging grooves 21 at equal angles;

[0030] Specifically, the limiting mechanism 3 can be used to fix the position of the mounting shaft 2 after it moves outside the fan shaft 1, ensuring that when the flexible coupling 4 drives the mounting shaft 2 to rotate, it can also drive the fan shaft 1 to rotate.

[0031] As a further preferred embodiment of the present invention, according to Figure 2-4 As shown, the fan shaft 1 includes a fixed shaft 11, an intermediate shaft 12 and a connecting shaft 13, and the fixed shaft 11, the intermediate shaft 12 and the connecting shaft 13 are coaxially installed as a whole.

[0032] The intermediate shaft 12 includes an intermediate shaft cylinder 121, a reserved groove 122 and a hollow groove 123. The intermediate shaft cylinder 121 is cylindrical in shape and has a hollow groove 123 disposed therein. The outer wall of the intermediate shaft cylinder 121 is further penetrated by the reserved groove 122 at equal angles.

[0033] Specifically, when the flexible coupling 4 drives the mounting shaft 2 to rotate, since it is connected to the intermediate shaft 12 through the limiting mechanism 3, the mounting shaft 2 will drive the intermediate shaft 12 to rotate, and the outside of the intermediate shaft 12 is connected to the fixed shaft 11 and the connecting shaft 13, thereby causing the two to rotate together. Since the top end of the fixed shaft 11 is connected to an independent unit consisting of a fan and a volute, it will also drive the fan inside the volute to rotate, thereby achieving the effect of rotation.

[0034] As a further preferred embodiment of the present invention, according to Figure 2-4 As shown, the limiting mechanism 3 is arranged inside the reserved groove 122 and the hollow groove 123, and it includes a rotating shaft 31, a lifting mechanism 32, a limiting block 33 and a driving shaft 34. The bearing of the rotating shaft 31 is arranged inside the hollow groove 123, and its top end passes through the outside of the intermediate shaft tube 121 and is arranged inside the connecting shaft 13. The top end of the rotating shaft 31 is integrally installed with a driving shaft 34 for driving the rotating shaft 31 on the outside to rotate.

[0035] The outside of the rotating shaft 31 is also distributed with lifting mechanisms 32 at equal angles. A limit block 33 is also provided at the top of the lifting mechanism 32. The limit block 33 can move up and down inside the hollow groove 123, and the limit block 33 and the engaging groove 21 are engaged with each other.

[0036] The lifting mechanism 32 includes two movable sleeves 321, a connecting shaft 322 and a rotating rod 323. The two movable sleeves 321 are symmetrically arranged on the outside of the rotating shaft 31. The cross-section of the two movable sleeves 321 is arranged in a rectangular structure. A through thread groove is arranged in the middle and is threadedly connected to the threaded structure symmetrically and oppositely arranged on the outer wall of the rotating shaft 31. A connecting shaft 322 is arranged at the top of the movable sleeve 321 to connect with the rotating rod 323. There are two rotating rods 323, and the two rotating rods 323 are arranged in a "V" shape.

[0037] Specifically, when the installation shaft 2 moves to the appropriate position outside the fan shaft 1, it needs to be limited. First, it is necessary to control the driving shaft 34 to rotate so that the driving shaft 34 drives the rotating shaft 31 at its top to rotate. When the rotating shaft 31 rotates, it will be threadedly connected with the threaded groove inside the movable sleeve 321, driving the movable sleeve 321 to move. Since the movable sleeve 321 is provided with two, and is threadedly connected to the outside of the rotating shaft 31 in opposite directions, the symmetrically arranged movable sleeve 321 will drive the two rotating rods 323 at its top to move toward each other, thereby ensuring that the two rotating rods 232 rotate and drive the limit block 33 at its top to move upward. When the limit block 33 moves upward, it can penetrate the reserved groove 122 and engage with the engaging groove 21 on the inner side of the installation shaft 2, thereby achieving the effect of limiting. The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. Such changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A fan connection structure, characterized in that: include: A fan shaft (1) and a flexible coupling (4) are provided at the top of the fan for connection. The flexible coupling (4) is provided between the two fan shafts (1) for connection, completing the connection between the fans and the fans and the fans and the motor. A mounting shaft (2) is further provided on the outside of the fan shaft (1) for moving outside the mounting shaft (2) to achieve the effect of controlling the length of the fan shaft (1). The fan shaft (1) and the mounting shaft (2) are limited by a limiting mechanism (3). The inner side of the mounting shaft (2) is also inlaid with engaging grooves (21) at equal angles.

2. The fan connection structure according to claim 1, wherein: The fan shaft (1) comprises a fixed shaft (11), an intermediate shaft (12) and a connecting shaft (13), and the fixed shaft (11), the intermediate shaft (12) and the connecting shaft (13) are coaxially mounted as a whole.

3. The fan connection structure according to claim 2, characterized in that: The intermediate shaft (12) comprises an intermediate shaft cylinder (121), a reserved groove (122) and a hollow groove (123). The intermediate shaft cylinder (121) is arranged in a cylindrical structure, and a hollow groove (123) is arranged inside the intermediate shaft cylinder. The reserved grooves (122) are also passed through the outer wall of the intermediate shaft cylinder (121) at equal angles.

4. A fan connection structure according to claim 3, characterized in that: The limiting mechanism (3) is arranged inside the reserved groove (122) and the hollow groove (123), and includes a rotating shaft (31), a lifting mechanism (32), a limiting block (33) and a driving shaft (34). The bearing of the rotating shaft (31) is arranged inside the hollow groove (123), and its top end passes through the outside of the intermediate shaft cylinder (121) and is arranged inside the connecting shaft (13). The top end of the rotating shaft (31) is integrally installed with a driving shaft (34) for driving the rotating shaft (31) on the outside to rotate.

5. The fan connection structure according to claim 4, characterized in that: Lifting mechanisms (32) are distributed at equal angles on the outside of the rotating shaft (31), and a limit block (33) is provided at the top of the lifting mechanism (32). The limit block (33) can move up and down inside the hollow groove (123), and the limit block (33) and the engaging groove (21) are engaged with each other.

6. The connection structure of a fan according to claim 5, characterized in that: The lifting mechanism (32) comprises two movable sleeves (321), a connecting shaft (322) and a rotating rod (323). The two movable sleeves (321) are symmetrically arranged outside the rotating shaft (31). The cross-section of the two movable sleeves (321) is arranged in a rectangular structure. A threaded groove is arranged in the middle and is threadedly connected to a threaded structure symmetrically arranged on the outer wall of the rotating shaft (31). A connecting shaft (322) is arranged at the top end of the movable sleeve (321) and is connected to the rotating rod (323). Two rotating rods (323) are arranged, and the two rotating rods (323) are arranged in a "V"-shaped structure.

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