Motor connecting structure for axial flow fan

Abstract

The utility model relates to the technical field of axial flow fans, in particular to a motor connecting structure for an axial flow fan, which comprises two mounting grid plates, the two mounting grid plates are respectively connected to two ends of a shell through bolts, a through shaft is rotatably mounted in the center of the mounting grid plates, fan blades are fixedly mounted on the through shaft, and a reversing gear box is mounted in the shell. The through shaft is connected with the output end of a reversing gear box, the input end of the reversing gear box is fixedly connected with a transmission rod, the other end of the transmission rod is connected with another reversing gear box, the reversing gear box is fixedly connected to the outer side of the shell, and the output end of the motor is fixedly connected to the input end of the reversing gear box on the outer side of the shell. Power is transmitted through the transmission rod and the through shaft, the installation structure of the shell is reduced, the air circulation space is increased, loss is reduced, meanwhile, erosion of flowing air to the motor is reduced, and the service life of the motor is prolonged.

Description

Technical Field

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

[0002] Axial flow fans, also known as local ventilation fans, are a type of fan commonly used in industrial and mining enterprises. Axial flow fans usually include a cylindrical casing, a motor is installed in the casing, and fan blades are installed at the output end of the motor. The motor of the axial flow fan is usually installed in the casing, which is the circulation space for the airflow. When the motor is in the casing, it not only hinders the air flow, but also needs to withstand the impact of particles carried by the airflow and gas erosion. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a motor connection structure for an axial flow fan with an external motor.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] A motor connection structure for an axial flow fan, characterized by comprising:

[0006] Installing grate plates, wherein two of the installing grate plates are respectively bolted to two ends of the shell;

[0007] A through shaft, both ends of which are rotatably mounted on the center of the mounting grate plate, and the fan blades are fixedly mounted on the through shaft;

[0008] A reversing gear box, wherein the through shaft passes through the reversing gear box, and the through shaft is connected to the output end of the reversing gear box;

[0009] A fixed column, wherein a plurality of the fixed columns are arranged in a circumferential array on the outside of the reversing gear box, and two ends of the fixed column are respectively fixedly connected to the reversing gear box and the inner side of the housing;

[0010] A transmission rod, the transmission rod rotatably passes through the housing, the first end of the transmission rod is fixedly connected to the input end of the reversing gear box, and the second end is connected to another reversing gear box, and the reversing gear box is fixedly connected to the outside of the housing;

[0011] The mounting platform is fixedly mounted on the outside of the shell, the motor is fixedly mounted on the mounting platform, and the output end of the motor is fixedly connected to the input end of the reversing gear box on the outside of the shell.

[0012] Optionally, a coupling is provided between the output end of the motor and the input end of the reversing gear box, and the coupling has overload protection.

[0013] Optionally, the transmission rod is connected to a rotation speed sensor.

[0014] Optionally, the mounting platform is mounted on a dustproof shell, and the motor is mounted in the dustproof shell.

[0015] Optionally, a heat dissipation shell is sleeved on the outer side of the dustproof shell, one end of the heat dissipation shell is provided with an opening, an end of the heat dissipation shell away from the opening end is fixedly connected to an air flow duct, and the air flow duct is connected to the inner side of the shell.

[0016] Optionally, a connecting plate is provided at one end of the fixing column away from the reversing gear box, and the connecting plate is bolted to the housing.

[0017] Optionally, the connecting plate is an arc-shaped plate that fits the inner side of the shell.

[0018] Optionally, a protective net is provided at the open end of the heat dissipation shell.

[0019] In summary, this application at least includes the following beneficial technical effects:

[0020] By placing the motor outside and transmitting power through the transmission rod and the through shaft, the installation structure of the shell is reduced, the space for air circulation is increased, the loss is reduced, and the erosion of the motor by the flowing air is reduced, thereby increasing the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present application from another perspective.

[0023] Reference numerals: 1. Install the grate plate;

[0024] 2. Through shaft;

[0025] 3. Reversing gear box; 31. Fixed column; 311. Connecting plate;

[0026] 41. Transmission rod; 42. Coupling;

[0027] 5. Mounting table; 51. Dustproof shell; 52. Heat dissipation shell; 53. Air flow duct;

[0028] 61. Shell; 62. Fan blades. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1, is a motor connection structure for an axial flow fan disclosed in an embodiment of the present application, comprising a mounting grate plate 1, two mounting grate plates 1 are bolted to two ends of a housing 61, a through shaft 2 is rotatably mounted at the center of the mounting grate plate 1, two ends of the through shaft 2 are rotatably mounted to the two mounting grate plates 1, a fan blade 62 is fixedly mounted on the through shaft 2, a reversing gear box 3 is installed in the housing 61, the through shaft 2 penetrates the reversing gear box 3, the through shaft 2 is connected to the output end of the reversing gear box 3, and the outer circumference of the reversing gear box 3 is The array has a fixed column 31, both ends of the fixed column 31 are fixedly connected to the reversing gear box 3 and the inner side of the shell 61 respectively, the input end of the reversing gear box 3 is fixedly connected to a transmission rod 41, the transmission rod 41 rotatably passes through the shell 61, the other end of the transmission rod 41 is connected to another reversing gear box 3, the reversing gear box 3 is fixedly connected to the outside of the shell 61, a mounting platform 5 is fixedly installed on the outside of the shell 61, the motor is fixedly installed on the mounting platform 5, and the output end of the motor is fixedly connected to the input end of the reversing gear box 3 outside the shell 61.

[0031] Specifically, the motor is fixedly installed on the outside of the housing 61, and the motor power is transmitted to the through shaft 2 through the two reversing gear boxes 3, and the fan blades 62 are driven to rotate through the through shaft 2.

[0032] In this way, the motor is placed outside and power is transmitted through the transmission rod 41 and the through shaft 2, which reduces the installation structure of the shell 61, increases the space for air circulation, reduces losses, and at the same time reduces the erosion of the motor by the flowing air, thereby increasing the service life of the motor.

[0033] In some feasible embodiments, the shell 61, the fan blades 62 and the motor are of prior art, the mounting grate plate 1 is a grate plate formed of annular steel wire, a bearing is fixedly connected to the center of the mounting grate plate 1, the outer side of the mounting grate plate 1 is annular, and threaded holes are correspondingly opened on the annular ring and the outer side of the shell 61, which are fixedly connected by bolts, the through shaft 2 is a cylindrical rod, and both ends of the through shaft 2 are inserted into the bearings, the fan blades 62 are keyed to the through shaft 2, and the reversing gear box 3 includes a box body, and two mutually meshing bevel gears are rotatably installed in the box body, and the two bevel gears serve as the output end and the input end respectively. The through shaft 2 passes through one of the bevel gears and is keyed to it, and the fixing column 31 connects the box body and the shell 61, which is used to fix the reversing gear box 3 and at the same time support the through shaft 2, and the side of the mounting platform 5 away from the shell 61 is flat, which is used to install the motor.

[0034] As a specific implementation of a motor connection structure for an axial flow fan provided in the application, a coupling 42 is provided between the output end of the motor and the input end of the reversing gear box 3, and the coupling 42 has an overload protection.

[0035] In general, by settingThe overload protection coupling 42 is used to provide overload protection when the housing 61 sucks in foreign matter and the fan blades 62 cannot rotate smoothly, thereby further improving the service life of the motor.

[0036] Furthermore, the transmission rod 41 is connected to a rotation speed sensor.

[0037] It should be understood that by setting up a speed sensor, when the coupling 42 is disconnected, a speed difference is generated between the transmission rod 41 and the motor. By measuring that the speed of the transmission rod 41 is lower than the set speed of the motor, a feedback signal is sent to facilitate maintenance.

[0038] Provided as an application A motor connection structure for an axial flow fan Another specific implementation method, See also Figure 1 and Figure 2 The mounting platform 5 is mounted on the dustproof shell 51 , and the motor is mounted in the dustproof shell 51 .

[0039] In combination with specific usage scenarios, a dust cover 51 is provided to further protect the motor.

[0040] Furthermore, a heat dissipation shell 52 is sleeved on the outer side of the dustproof shell 51 . An opening is provided at one end of the heat dissipation shell 52 . An air flow duct 53 is fixedly connected to one end of the heat dissipation shell 52 away from the opening end. The air flow duct 53 is connected to the inner side of the shell body 61 .

[0041] It should be understood that by providing the heat dissipation shell 52, the heat dissipation shell 52 is connected to the air flow duct 53. When the air in the shell 61 flows rapidly, a low-pressure area is formed in the shell 61, so that the gas in the air flow duct 53 enters the shell 61, so that flowing gas is formed in the dustproof shell 51, which takes away the motor heat dissipated by the dustproof shell 51 and improves the heat dissipation of the motor part.

[0042] In some feasible embodiments, the dustproof shell 51 is a rectangular shell with an open end. The open end of the dustproof shell 51 is close to the mounting platform 5 and bolted. The heat dissipation shell 52 is sleeved on the outside of the dustproof shell 51 and bolted to the mounting platform 5. The side of the dustproof shell 51 away from the air flow duct 53 is open to facilitate air intake. In order to reduce the inhalation of foreign matter, a protective net is provided at the open end of the heat dissipation shell 52.

[0043] Provided as an application A motor connection structure for an axial flow fan A specific implementation method of A connecting plate 311 is disposed at one end of the fixing column 31 away from the reversing gear box 3 , and the connecting plate 311 is bolted to the housing 61 .

[0044] It should be understood that by providing the connecting plate 311 with bolts, the disassembly and assembly of the fixing column 31 is facilitated.

[0045] Furthermore, the connecting plate 311 is an arc-shaped plate that fits the inner side of the shell 61 .

[0046] It should be understood that the housing 61 is cylindrical, and the installation is facilitated by providing an arc-shaped plate.

[0047] In some feasible embodiments, threaded holes are provided at corresponding positions of the connecting plate 311 and the shell 61 , and the connecting plate 311 and the shell 61 are fixedly connected by bolts.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A motor connection structure for an axial flow fan, characterized in that: include: Installing a grate plate (1), wherein two of the installing grate plates (1) are respectively bolted to two ends of the housing; A through shaft (2), wherein both ends of the through shaft (2) are rotatably mounted on the center of the mounting grate plate (1), and the fan blades are fixedly mounted on the through shaft (2); A reversing gear box (3), wherein the through-axis (2) passes through the reversing gear box (3), and the through-axis (2) is connected to an output end of the reversing gear box (3); A fixed column (31), wherein a plurality of the fixed columns (31) are arranged in a circular array on the outside of the reversing gear box (3), and two ends of the fixed columns (31) are respectively fixedly connected to the reversing gear box (3) and the inside of the housing; a transmission rod (41), the transmission rod (41) rotatably passing through the housing, the first end of the transmission rod (41) being fixedly connected to the input end of the reversing gear box (3), the second end of the transmission rod (41) being connected to another reversing gear box (3), the reversing gear box (3) being fixedly connected to the outside of the housing; A mounting platform (5), the mounting platform (5) is fixedly mounted on the outside of the housing, the motor is fixedly mounted on the mounting platform (5), and the output end of the motor is fixedly connected to the input end of the reversing gear box (3) on the outside of the housing.

2. The motor connection structure for an axial flow fan according to claim 1, characterized in that: A coupling (42) is provided between the output end of the motor and the input end of the reversing gear box (3), and the coupling (42) has an overload protection function.

3. The motor connection structure for an axial flow fan according to claim 2, characterized in that: The transmission rod (41) is connected to a rotation speed sensor.

4. The motor connection structure for an axial flow fan according to claim 1, characterized in that: The mounting platform (5) is mounted on a dustproof shell (51), and the motor is mounted in the dustproof shell (51).

5. The motor connection structure for an axial flow fan according to claim 4, characterized in that: A heat dissipation shell (52) is sleeved on the outside of the dustproof shell (51), one end of the heat dissipation shell (52) is provided with an opening, an end of the heat dissipation shell (52) away from the opening end is fixedly connected to an air flow pipe (53), and the air flow pipe (53) is connected to the inside of the shell.

6. The motor connection structure for an axial flow fan according to claim 1, characterized in that: A connecting plate (311) is provided at one end of the fixing column (31) away from the reversing gear box (3), and the connecting plate (311) is bolted to the housing.

7. The motor connection structure for an axial flow fan according to claim 6, characterized in that: The connecting plate (311) is an arc-shaped plate that fits the inner side of the shell.

8. The motor connection structure for an axial flow fan according to claim 5, characterized in that: A protective net is provided at the open end of the heat dissipation shell (52).

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