CN215596942U

CN215596942U - Height-adjustable axial flow fan

Info

Publication number: CN215596942U
Application number: CN202121254629.0U
Authority: CN
Inventors: 李�浩
Original assignee: Hubei Yutongling Blower Fan Industrial Co ltd
Current assignee: Hubei Yutongling Blower Fan Industrial Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-01-21
Anticipated expiration: 2031-06-07

Abstract

The utility model relates to the technical field of ventilators, in particular to a height-adjustable axial flow ventilator which comprises a base, a plurality of self-locking universal wheels, a mounting seat, a lifting mechanism and a fan assembly, wherein the self-locking universal wheels are rotatably mounted at the bottom of the base; elevating system includes central fluted disc, a plurality of internal thread gear, a plurality of threaded rod and fixing base, and central fluted disc rotates and installs on the mount pad, and internal thread gear all rotates and installs on the mount pad, and internal thread gear encircles central fluted disc evenly distributed, and all meshes with central fluted disc. The three threaded rods have higher stability, so that the fan assembly can stably move up and down.

Description

Height-adjustable axial flow fan

Technical Field

The utility model relates to the technical field of ventilators, in particular to a height-adjustable axial flow ventilator.

Background

Although the traditional axial flow fan can meet the ventilation supply problem of construction in the tunnel, the traditional axial flow fan still has the following defects: firstly, because the traditional fan is mostly fixed by a bracket, the traditional fan has the problems of non-adjustability, fixed position and inflexible movement in the use process, and the height and the position of the traditional fan are usually not adjustable, so that the traditional fan cannot adapt to a complex environment in use, the height is not adjustable, and a ventilation center of the traditional fan cannot obtain a good ventilation effect in tunnels with different heights;

in contrast, chinese patent CN201921007666.4 discloses "an axial flow fan for tunnel construction, which includes a chassis and an axial flow fan, wherein a moving structure is provided under the chassis, support adjusting structures are installed on two sides of the axial flow fan, the support adjusting structures are installed on the chassis, and a lighting assembly is provided on the axial flow fan"; according to the novel ventilation device, the ball screw is driven to rotate through the driven bevel gear and is meshed with the ball nut on the ball screw to move up and down, the position of the ball nut is adjusted to adjust the axial flow fan to move up and down, the center of the axial flow fan is made to be higher or lower, and ventilation can be conveniently performed on tunnels in different heights; however, the axial-flow fan moves up and down through a pair of 'sliders' with the same structure, and the tunnel fan is large in mass, and the 'axial-flow fan' moves through force applied to two ends, so that stability of the mode is low, and lateral deviation of the 'axial-flow fan' is easily caused, and the 'ball screw' cannot rotate to complete height adjustment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defect of low stability in the prior art, and provides a height-adjustable axial flow fan.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the height-adjustable axial flow fan comprises a base, a plurality of self-locking universal wheels, a mounting seat, a lifting mechanism and a fan assembly, wherein the self-locking universal wheels are rotatably mounted at the bottom of the base;

elevating system includes central fluted disc, a plurality of internal thread gear, a plurality of threaded rod and fixing base, central fluted disc rotates and installs on the mount pad, internal thread gear all rotates and installs on the mount pad, internal thread gear encircle central fluted disc evenly distributed, and all with the meshing of central fluted disc, the threaded rod run through corresponding internal thread gear, and with internal thread gear threaded connection, the bottom of threaded rod runs through the base, just is connected with base rotation, the top and the fixing base fixed connection of threaded rod.

Preferably, the number of the threaded rods is three, and the threaded rods correspond to the internal thread gears one to one.

Preferably, the bottom of base is rotated and is installed the worm wheel, worm wheel and the coaxial fixed connection of central fluted disc, the worm is installed in the outside transmission of worm wheel, the worm rotates the bottom of installing at the base, the outer end fixed mounting of worm has the hand wheel.

Preferably, the fan assembly comprises an air duct, a support frame, a motor and an impeller, the air duct is fixedly mounted at the top of the fixing seat, the support frame is fixedly mounted inside the air duct, the motor is fixedly mounted on the support frame, and an output shaft of the motor is fixedly connected with the impeller.

The height-adjustable axial flow fan provided by the utility model has the beneficial effects that: all the internal thread gears rotate in the same direction through the rotation of the central fluted disc, so that the internal thread gears rotate and generate relative displacement with the threaded rod, and the threaded rod can move up and down to adjust the height of the fan assembly; the stability of three threaded rod is higher to guarantee reciprocating that the fan subassembly can be stable.

Drawings

Fig. 1 is a schematic structural view of an axial flow fan with adjustable height according to the present invention;

fig. 2 is a schematic structural view of a base of an axial-flow fan with adjustable height according to the present invention;

fig. 3 is a schematic structural diagram of a fan assembly of an axial flow fan with adjustable height according to the present invention.

In the figure: the device comprises a base 1, a self-locking universal wheel 2, a mounting seat 3, a lifting mechanism 4, a central fluted disc 41, an internal thread gear 42, a threaded rod 43, a fixed seat 44, a fan assembly 5, an air duct 51, a supporting frame 52, a motor 53, an impeller 54, a worm wheel 6, a worm 7 and a hand wheel 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, the height-adjustable axial flow fan comprises a base 1, a plurality of self-locking universal wheels 2, and the self-locking universal wheels 2 can facilitate the flexible movement of the whole device; the self-locking universal wheel 2 is rotatably arranged at the bottom of the base 1, the mounting seat 3 is fixedly arranged at the top of the base 1, the lifting mechanism 4 is arranged on the mounting seat 3, and the output end of the lifting mechanism 4 is connected with the fan assembly 5; the lifting mechanism 4 is used for adjusting the height of the fan assembly 5.

The lifting mechanism 4 comprises a central fluted disc 41, a plurality of internal thread gears 42, a plurality of threaded rods 43 and a fixed seat 44, wherein the central fluted disc 41 is rotatably installed on the installation seat 3, the internal thread gears 42 are uniformly distributed around the central fluted disc 41 and are respectively meshed with the central fluted disc 41, the central fluted disc 41 can drive all the internal thread gears 42 to rotate, the threaded rods 43 penetrate through the corresponding internal thread gears 42 and are in threaded connection with the internal thread gears 42, the internal thread gears 42 can rotate to generate relative displacement with the threaded rods 43, so that the threaded rods 43 can move up and down, and the height of the fan assembly 5 is adjusted; the number of the threaded rods 43 is three, and the threaded rods correspond to the internal thread gears 42 one by one; the stability of three threaded rods 43 is higher, thereby ensuring that the fan assembly 5 can move up and down stably.

The bottom end of the threaded rod 43 penetrates through the base 1 and is rotatably connected with the base 1, and the top end of the threaded rod 43 is fixedly connected with the fixed seat 44; the bottom of the base 1 is rotatably provided with a worm wheel 6, the worm wheel 6 is coaxially and fixedly connected with the central fluted disc 41, and the worm wheel 6 can drive the central fluted disc 41 to synchronously rotate; the worm 7 is installed in the outside transmission of worm wheel 6, and worm 7 rotates and installs the bottom at base 1, and worm 7 can drive worm wheel 6 and take place to rotate. The outer end of the worm 7 is fixedly provided with a hand wheel 8.

The fan assembly 5 comprises an air duct 51, a support frame 52, a motor 53 and an impeller 54, wherein the air duct 51 is fixedly installed at the top of the fixed seat 44, the support frame 52 is fixedly installed inside the air duct 51, the motor 53 is fixedly installed on the support frame 52, and an output shaft of the motor 53 is fixedly connected with the impeller 54. The motor 53 can drive the impeller 54 to rotate at high speed.

The working principle is as follows: the worm 7 rotates by rotating the hand wheel 8, and the worm 7 is in transmission connection with the worm wheel 6, so that the worm wheel 6 can synchronously rotate with the central fluted disc 41, all the internal thread gears 42 rotate in the same direction, and then the internal thread gears 42 rotate and the threaded rod 43 generate relative displacement, and the threaded rod 43 can move up and down to adjust the height of the fan assembly 5.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. An axial flow fan with adjustable height comprises a base (1), a plurality of self-locking universal wheels (2), a mounting seat (3), a lifting mechanism (4) and a fan assembly (5), and is characterized in that the self-locking universal wheels (2) are rotatably mounted at the bottom of the base (1), the mounting seat (3) is fixedly mounted at the top of the base (1), the lifting mechanism (4) is arranged on the mounting seat (3), and the output end of the lifting mechanism (4) is connected with the fan assembly (5);

elevating system (4) are including central fluted disc (41), a plurality of internal thread gear (42), a plurality of threaded rod (43) and fixing base (44), central fluted disc (41) rotate and install on mount pad (3), internal thread gear (42) all rotate and install on mount pad (3), internal thread gear (42) around central fluted disc (41) evenly distributed, and all mesh with central fluted disc (41), threaded rod (43) run through corresponding internal thread gear (42) and with internal thread gear (42) threaded connection, the bottom of threaded rod (43) runs through base (1), and rotates with base (1) and be connected, the top and fixing base (44) fixed connection of threaded rod (43).

2. The axial-flow fan with adjustable height according to claim 1, wherein the number of the threaded rods (43) is three and corresponds to one-to-one of the internally threaded gears (42).

3. The axial-flow fan with the adjustable height as claimed in claim 2, wherein a worm wheel (6) is rotatably mounted at the bottom of the base (1), the worm wheel (6) is coaxially and fixedly connected with the central fluted disc (41), a worm (7) is rotatably mounted at the outer side of the worm wheel (6), the worm (7) is rotatably mounted at the bottom of the base (1), and a hand wheel (8) is fixedly mounted at the outer end of the worm (7).

4. The axial flow fan with the adjustable height as claimed in claim 3, wherein the fan assembly (5) comprises an air duct (51), a support frame (52), a motor (53) and an impeller (54), the air duct (51) is fixedly installed at the top of the fixing seat (44), the support frame (52) is fixedly installed inside the air duct (51), the motor (53) is fixedly installed on the support frame (52), and an output shaft of the motor (53) is fixedly connected with the impeller (54).