CN218178449U

CN218178449U - Lifting support mechanism for centrifugal fan

Info

Publication number: CN218178449U
Application number: CN202222775671.8U
Authority: CN
Inventors: 安兵; 宋利娜; 石伟波
Original assignee: Zibo Hengtong Fan Co ltd
Current assignee: Zibo Hengtong Fan Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2022-12-30
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to a centrifugal fan technical field especially relates to a lifting support mechanism for centrifugal fan, and it includes bottom plate, pneumatic cylinder A, gear and roof. The bottom plate is provided with a return type frame, the inner side of the return type frame is symmetrically provided with two groups of scissor type lifting frames, the bottom feet of the scissor type lifting frames, which are close to each other, are connected with a movable rod, and the movable rod is connected with the return type frame in a sliding manner. Pneumatic cylinder A sets up on the bottom plate, all sets up the rack on the movable rod of both sides, and one of them rack is connected in the pneumatic cylinder A drive. The gear is arranged between the racks on the two sides, the gear is rotationally connected with the bottom plate, and the gear is meshed with the racks on the two sides. Still be equipped with pneumatic cylinder B on the bottom plate, pneumatic cylinder B drive connection fixture block, fixture block and bottom plate sliding connection, and fixture block and gear joint. The scissor type lifting frame is connected with the top plate in a driving mode, the center of the top plate is provided with a rotary table in a rotating mode, the top of the top plate is provided with a motor, and the motor is connected with the rotary table in a driving mode. The utility model discloses wholly with structural stability high, balanced support ability is strong, and easy operation.

Description

Lifting support mechanism for centrifugal fan

Technical Field

The utility model relates to a centrifugal fan technical field especially relates to a lifting support mechanism for centrifugal fan.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The centrifugal fan needs to be controlled to lift in certain specific occasions, relevant instruction actions need to be completed by means of the lifting support mechanism, but the existing lifting support mechanism is simple, and in the driving lifting process, obvious difference occurs in the support force of the edge part of the top, so that the stability of the equipment is lowered.

Chinese patent with publication number CN210565272U discloses a lifting support device for centrifugal fan, including centrifugal fan place the platform, elevating system and support base, elevating system is provided with a plurality of and elevating system sets up in the up end that supports the base, elevating system keeps away from the one end and the centrifugal fan place the platform fixed connection that support the base, be provided with the wheel that can go up and down in supporting the base, be provided with the mechanism that has rotation and fixed effect on centrifugal fan place the platform, it has great area of contact to enable platform and ground through above setting up, guarantee the stability of platform, the fixed of platform can go on with going up and down in step simultaneously.

However, the device still has the following defects: according to the prior art, a hydraulic cylinder is used as a power mechanism for lifting drive, the lifting height of the hydraulic cylinder is limited by the length of a top rod of the hydraulic cylinder, and the descending height of the hydraulic cylinder is limited by the height of a base of the hydraulic cylinder, so that the lifting amplitude is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the problem that exists among the background art, provides a centrifugal fan is with lift supporting mechanism.

The technical scheme of the utility model: a lifting support mechanism for a centrifugal fan comprises a bottom plate, a hydraulic cylinder A, a gear and a top plate. Set up back the type frame on the bottom plate, the inboard symmetry that returns the type frame sets up two sets of fork cranes of cutting, cuts the footing that the fork crane kept away from each other and all rotates with returning the type frame to be connected, cuts the footing connection movable rod that the fork crane is close to each other, movable rod and return type frame sliding connection. The hydraulic cylinder A is arranged on the bottom plate, the movable rods on two sides are respectively provided with a rack, the racks are connected with the bottom plate in a sliding mode, and the hydraulic cylinder A is connected with one of the racks in a driving mode. The gear is arranged between the racks on the two sides, the gear is rotationally connected with the bottom plate, and the gear is meshed with the racks on the two sides. The bottom plate is further provided with a hydraulic cylinder B, the hydraulic cylinder B is in driving connection with a clamping block, the clamping block is in sliding connection with the bottom plate, and the clamping block is clamped with the gear. The roof setting is in the top of bottom plate, cuts fork crane drive and connects the roof, and the center department of roof rotates and sets up the carousel, and the top of roof sets up the motor, and motor drive connects the carousel.

Preferably, a circular groove is formed in the top plate, a plurality of idler wheels are arranged at the bottom of the rotary table around the circle center of the rotary table, and the idler wheels are located on the inner side of the circular groove and are in rolling connection with the bottom of the circular groove.

Preferably, the bottom of the bottom plate is provided with a balance adjusting piece, the bottom of the balance adjusting piece is provided with a universal wheel, and the universal wheel is provided with a self-locking assembly.

Preferably, the balance adjusting part comprises a sleeve A, a knob, a threaded column and a vertical shaft, a transverse plate is arranged on the universal wheel, and a sleeve B is arranged on the transverse plate. The top of the sleeve A is connected with the bottom of the bottom plate, the top of the threaded column is connected with the knob, the top end of the threaded column is inserted into the sleeve A and is in threaded connection with the sleeve A, the top end of the vertical shaft is connected with the bottom of the knob, and the lower end of the vertical shaft is inserted into the sleeve B and is in rotational connection with the sleeve B.

Preferably, the size of bottom plate is greater than the size of returning the type frame, and the side of roof sets up the chimb, sets up flexible protection casing between chimb and the bottom plate, and flexible protection casing is located the outside of cutting fork crane.

Preferably, the bottom of roof sets up the speed reducer, and the output of motor is connected with the input of speed reducer, and the output and the carousel axle end connection of speed reducer.

Compared with the prior art, the utility model discloses following profitable technological effect has:

by arranging the two opposite scissor type lifting frames, the scissor type supports on the two sides are linked with the gear through the racks, when the hydraulic cylinder A is used for driving the rack on one side to move, the rack on the other side moves synchronously, so that the scissor type lifting frames on the two sides drive the top plate to lift synchronously, and the edge supporting force on the top plate is kept stable all the time in the lifting process; through set up flexible protection casing between bottom plate and roof, utilize flexible protection casing to cover internal structure spare, prevent that personnel or debris card from going into in cutting fork crane connecting rod crack. Simultaneously the utility model discloses still set up the balance adjustment spare in the bottom, can adjust the stability of whole device according to the actual demand.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a diagram of the connection structure of the base plate and the turntable;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a view showing a coupling structure between the balance adjuster and the universal wheel;

fig. 5 is a structural exploded view of the turntable and the top plate.

Reference numerals are as follows: 1. a base plate; 2. a balance adjustment member; 21. a sleeve A; 22. a knob; 23. a threaded post; 24. a vertical axis; 3. a universal wheel; 31. a transverse plate; 32. a sleeve B; 4. a back-shaping frame; 5. a scissor-fork type lifting frame; 6. a movable rod; 7. a hydraulic cylinder A; 8. a rack; 9. a gear; 10. a hydraulic cylinder B; 11. a clamping block; 12. a top plate; 121. a circular groove; 13. a convex edge; 14. a telescopic protective cover; 15. a turntable; 16. a roller; 17. an electric motor.

Detailed Description

Example one

As shown in fig. 1-5, the utility model provides a centrifugal fan uses lift supporting mechanism, including bottom plate 1, pneumatic cylinder A7, gear 9 and roof 12. Set up back type frame 4 on the bottom plate 1, the inboard symmetry of returning type frame 4 sets up two sets of fork crane 5 of cutting, cuts the footing that fork crane 5 kept away from each other and all rotates with returning type frame 4 to be connected, cuts the footing connection movable rod 6 that fork crane 5 was close to each other, movable rod 6 with return type frame 4 sliding connection. Pneumatic cylinder A7 sets up on bottom plate 1, all sets up rack 8 on the movable rod 6 of both sides, rack 8 and bottom plate 1 sliding connection, and one of them rack 8 is connected in the pneumatic cylinder A7 drive. The gear 9 is arranged between the racks 8 on the two sides, the gear 9 is rotationally connected with the bottom plate 1, and the gear 9 is meshed with the racks 8 on the two sides. Still be equipped with pneumatic cylinder B10 on the bottom plate 1, pneumatic cylinder B10 drive connection fixture block 11, fixture block 11 and bottom plate 1 sliding connection, and fixture block 11 and gear 9 joint. The top plate 12 is arranged above the bottom plate 1, the scissor type lifting frame 5 is in driving connection with the top plate 12, the center of the top plate 12 is rotatably provided with the turntable 15, the top of the top plate 12 is provided with the motor 17, and the motor 17 is in driving connection with the turntable 15.

In this embodiment, the rack 8 on one side is driven by the hydraulic cylinder A7 to slide, the rack 8 on the other side slides synchronously under the transmission action of the gear 9, the racks on the two sides drive the movable rods on the two sides to slide synchronously, so that the scissor-type lifting frames 5 on the two sides move synchronously, the scissor-type lifting frames 5 on the two sides drive the top plate 12 to lift synchronously, the stability of the top plate 12 is high in the lifting process, and the bearing capacity of the edge part is maintained all the time.

Example two

As shown in fig. 5, the utility model provides a lifting support mechanism for centrifugal fan compares in embodiment one, sets up circular slot 121 on roof 12, and the bottom of carousel 15 encircles its centre of a circle and sets up a plurality of gyro wheel 16, and gyro wheel 16 is located circular slot 121 inboard and with the bottom roll connection of circular slot 121.

In this embodiment, the bottom of the turntable 15 is provided with the roller, the turntable 15 is supported by the roller, and the roller can also reduce the friction between the turntable 15 and the top plate 12, so that the rotation of the turntable 15 is more stable.

EXAMPLE III

As shown in fig. 4, the utility model provides a lifting support mechanism for centrifugal fan compares in embodiment one, and the bottom of bottom plate 1 sets up balance adjustment 2, and the bottom of balance adjustment 2 sets up universal wheel 3, sets up the auto-lock subassembly on the universal wheel 3. The balance adjusting part 2 comprises a sleeve A21, a knob 22, a threaded column 23 and a vertical shaft 24, a transverse plate 31 is arranged on the universal wheel 3, and a sleeve B32 is arranged on the transverse plate 31. The top of the sleeve A21 is connected with the bottom of the bottom plate 1, the top of the threaded column 23 is connected with the knob 22, the top end of the threaded column is inserted into the sleeve A21 and is in threaded connection with the sleeve A, the top end of the vertical shaft 24 is connected with the bottom of the knob 22, and the lower end of the vertical shaft 24 is inserted into the sleeve B32 and is in rotary connection with the sleeve B.

In this embodiment, when bottom plate 1 is in the tilt state, can adjust the balance adjustment piece 2 that corresponds the side, concrete operation does, rotates knob 22, and knob 22 drives screw post 23 and rotates, and screw post 23 stretches out or further stretches into sleeve pipe A21 according to actual demand in, adjusts to four universal wheels 3 all on the coplanar, and bottom plate 1 level can.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A lifting support mechanism for a centrifugal fan is characterized by comprising a bottom plate (1), a hydraulic cylinder A (7), a gear (9) and a top plate (12);

a back-type frame (4) is arranged on the bottom plate (1), two groups of shearing fork type lifting frames (5) are symmetrically arranged on the inner side of the back-type frame (4), feet, which are far away from each other, of the shearing fork type lifting frames (5) are rotatably connected with the back-type frame (4), feet, which are close to each other, of the shearing fork type lifting frames (5) are connected with movable rods (6), and the movable rods (6) are slidably connected with the back-type frame (4); the hydraulic cylinder A (7) is arranged on the bottom plate (1), the movable rods (6) on the two sides are respectively provided with a rack (8), the racks (8) are connected with the bottom plate (1) in a sliding manner, and the hydraulic cylinder A (7) is connected with one rack (8) in a driving manner;

the gear (9) is arranged between the racks (8) on the two sides, the gear (9) is rotationally connected with the bottom plate (1), and the gear (9) is meshed with the racks (8) on the two sides; the bottom plate (1) is also provided with a hydraulic cylinder B (10), the hydraulic cylinder B (10) is in driving connection with a clamping block (11), the clamping block (11) is in sliding connection with the bottom plate (1), and the clamping block (11) is clamped with the gear (9);

roof (12) set up in the top of bottom plate (1), cut fork crane (5) drive and connect roof (12), and the center department of roof (12) rotates and sets up carousel (15), and the top of roof (12) sets up motor (17), and carousel (15) are connected in motor (17) drive.

2. The lifting support mechanism for the centrifugal fan according to claim 1, wherein a circular groove (121) is formed in the top plate (12), a plurality of rollers (16) are arranged at the bottom of the rotary disk (15) around the center of the circular groove, and the rollers (16) are positioned on the inner side of the circular groove (121) and are in rolling connection with the bottom of the circular groove (121).

3. The lifting support mechanism for the centrifugal fan is characterized in that a balance adjusting part (2) is arranged at the bottom of the bottom plate (1), a universal wheel (3) is arranged at the bottom of the balance adjusting part (2), and a self-locking assembly is arranged on the universal wheel (3).

4. The lifting support mechanism for the centrifugal fan is characterized in that the balance adjusting piece (2) comprises a sleeve A (21), a knob (22), a threaded column (23) and a vertical shaft (24), a transverse plate (31) is arranged on the universal wheel (3), and a sleeve B (32) is arranged on the transverse plate (31); the top of the sleeve A (21) is connected with the bottom of the bottom plate (1), the top of the threaded column (23) is connected with the knob (22), the top end of the threaded column is inserted into the sleeve A (21) and is in threaded connection with the sleeve A, the top end of the vertical shaft (24) is connected with the bottom of the knob (22), and the lower end of the vertical shaft (24) is inserted into the sleeve B (32) and is in rotary connection with the sleeve B.

5. The lifting support mechanism for the centrifugal fan according to claim 1, wherein the size of the bottom plate (1) is larger than that of the clip frame (4), the side surface of the top plate (12) is provided with a convex edge (13), a telescopic protective cover (14) is arranged between the convex edge (13) and the bottom plate (1), and the telescopic protective cover (14) is positioned at the outer side of the scissor lifting frame (5).

6. The lifting support mechanism for the centrifugal fan as claimed in claim 1, wherein a speed reducer is arranged at the bottom of the top plate (12), the output end of the motor (17) is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the shaft end of the rotary disc (15).