Centrifugal fan lifting device

Abstract

The utility model discloses a centrifugal fan lifting device which comprises a base, a lifting column is arranged on the base, a sliding sleeve is connected to the lifting column in a sleeved mode, and a lifting plate is connected to the sliding sleeve. A support is arranged on the base, a lead screw rod is rotatably arranged on the support, a lead screw nut is connected to the lead screw rod in a sleeving mode, a sliding seat is fixed to the lead screw nut, an obliquely-arranged sliding rail strip is arranged on the side face of the sliding seat, a seat body is arranged on the bottom face of the lifting plate, a sliding rail groove is obliquely formed in the seat body, and a sliding rail is arranged in the sliding rail groove. The sliding rail strips are clamped in the sliding rail grooves in a sliding mode. The problems that according to a lifting structure in the prior art, after the height is adjusted, each lifting rod needs to be locked, the stability of a draught fan is not easy to keep in the locking process, and operation is tedious are solved.

Description

Technical Field

[0001] The utility model relates to a centrifugal fan, in particular to a centrifugal fan lifting device. Background Art

[0002] A centrifugal fan is a mechanical device that uses the principle of centrifugal force to increase gas pressure and flow speed. They are widely used in industrial and commercial fields for ventilation, air conditioning, combustion systems, smoke exhaust systems, etc. In order to facilitate the installation and use of centrifugal fans, many fans are currently equipped with a liftable base. For example, the Chinese patent with patent number CN202021507516.2 provides a mobile liftable axial flow fan, including a wind tube and a fan assembly, and also includes a base for supporting the wind tube and universal casters arranged around the bottom of the base. The base includes an upper base plate, a lower base plate, and an adjustable lifting rod with an upper end arranged on the upper base plate and a lower end arranged on the lower base plate. In order to move the axial flow fan, the utility model is provided with a universal caster at the bottom of the base, and the axial flow fan is facilitated to be pushed by the universal caster; in order to enable the axial flow fan to adjust the height, the base is divided into an upper base plate and a lower base plate, and an adjustable lifting rod is arranged between the upper base plate and the lower base plate, and the total length of the lifting rod is adjusted. For example, in the lifting structure in the prior art, each lifting rod needs to be locked separately after the height is adjusted. It is not easy to keep the fan stable during the locking process, and the operation is cumbersome. Utility Model Content

[0003] The utility model aims to provide a centrifugal fan lifting device, which solves the problem that the lifting structure in the prior art needs to lock each lifting rod separately after adjusting the height, it is difficult to keep the fan stable during the locking process, and the operation is cumbersome.

[0004] In order to achieve the above object, the utility model provides a centrifugal fan lifting device, the centrifugal fan lifting device comprises a base, a lifting column is arranged on the base, a sliding sleeve is sleeved on the lifting column, and a lifting plate is connected to the sliding sleeve;

[0005] The base is provided with a support, the support is rotatably provided with a wire lever, the wire lever is sleeved with a wire screw nut, a sliding seat is fixed on the wire screw nut, a side of the sliding seat is provided with an inclined sliding rail bar, the bottom surface of the lifting plate is provided with a seat body, the seat body is inclinedly provided with a sliding rail groove, the sliding rail bar can be slidably engaged in the sliding rail groove, so that the horizontal displacement of the sliding seat can drive the seat body to move up and down; the end of the wire lever is coaxially connected with a brake pad;

[0006] A cylinder is arranged on the base, and a piston rod of the cylinder is connected to a brake block via a connecting rod, so that the brake block can approach or move away from the brake pad.

[0007] Preferably, a rotating handle is provided at the end of the wire lever.

[0008] Preferably, a limiting slide rail is provided on the base, and the sliding seat is slidably provided on the limiting slide rail.

[0009] Preferably, a linear bearing is arranged in the sliding sleeve, and the lifting column passes through the linear bearing.

[0010] Preferably, a scale is provided on the base along the vertical direction, and a pointer is provided in the lifting plate near the scale.

[0011] The cam is provided with a support frame, and a screw rod is rotatably provided on the support frame, and a screw nut is sleeved on the screw rod, and a sliding seat is fixed on the screw nut, and an inclined slide rail bar is provided on the side of the sliding seat, and a seat body is provided on the bottom surface of the lifting plate, and a slide rail groove is provided on the seat body. The slide rail bar can be slidably engaged in the slide rail groove, so that the horizontal displacement of the sliding seat can drive the seat body to move up and down; the end of the screw rod is coaxially connected with a brake pad; a cylinder is provided on the base, and the piston rod of the cylinder is connected with a brake block through a connecting rod, so that the brake block can approach or move away from the brake pad. During installation, the fan body is set on the lifting plate, and the lead screw nut and the sliding seat thereon are driven to move in the horizontal direction by rotating the wire lever, thereby pushing the seat body and the lifting plate up and down through the slide rail and the slide rail groove, so as to adjust the height of the fan body. After the adjustment is completed, the cylinder is started to press the brake block against the brake pad to prevent the rotation of the wire lever, thereby achieving the locking purpose, which is convenient for the fan to be installed and used according to different usage requirements. The centrifugal fan lifting device provided by the utility model is convenient to adjust the height and is easy to lock, thereby improving the stability of the fan.

[0012] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural diagram of the centrifugal fan lifting device provided by the utility model;

[0015] Figure 2It is a structural diagram of a brake pad in a centrifugal fan lifting device provided by the utility model;

[0016] Figure 3 It is a side view of the centrifugal fan lifting device provided by the utility model;

[0017] Figure 4 This is a first internal structure diagram of the centrifugal fan lifting device provided by the utility model;

[0018] Figure 5 This is a second internal structure diagram of the centrifugal fan lifting device provided by the utility model.

[0019] Description of Reference Numerals

[0020] 1-base; 2-lifting plate; 3-lifting column; 4-sleeve; 5-pointer; 6-ruler; 7-brake pad; 8-turn handle; 9-cylinder; 10-connecting rod; 11-brake block; 12-screw lever; 13-sliding seat; 14-screw nut; 15-limiting slide rail; 16-seat body; 17-slide rail groove; 18-slide rail bar. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0022] like Figure 1-5As shown: the utility model provides a centrifugal fan lifting device, the centrifugal fan lifting device comprises a base 1, the base 1 is provided with a lifting column 3, the lifting column 3 is sleeved with a sliding sleeve 4, and the sliding sleeve 4 is connected with a lifting plate 2; the base 1 is provided with a support, the support is rotatably provided with a wire lever 12, the wire lever 12 is sleeved with a lead screw nut 14, the lead screw nut 14 is fixed with a sliding seat 13, and the side of the sliding seat 13 is provided with an inclined slide rail 18 A seat body 16 is provided on the bottom surface of the lifting plate 2, and a slide rail groove 17 is obliquely provided on the seat body 16. The slide rail bar 18 can be slidably engaged in the slide rail groove 17, so that the horizontal displacement of the sliding seat 13 can drive the seat body 16 to move up and down; the end of the wire lever 12 is coaxially connected to the brake pad 7; a cylinder 9 is provided on the base 1, and the piston rod of the cylinder 9 is connected to the brake block 11 through a connecting rod 10, so that the brake block 11 can approach or move away from the brake pad 7. During installation, the fan body is set on the lifting plate, and the lead screw nut and the sliding seat thereon are driven to move in the horizontal direction by rotating the wire lever, thereby pushing the seat body and the lifting plate up and down through the slide rail and the slide rail groove, so as to adjust the height of the fan body. After the adjustment is completed, the cylinder is started to press the brake block against the brake pad to prevent the rotation of the wire lever, thereby achieving the locking purpose, which is convenient for the fan to be installed and used according to different usage requirements. The centrifugal fan lifting device provided by the utility model is convenient to adjust the height and is easy to lock, thereby improving the stability of the fan.

[0023] In a preferred embodiment of the present invention, in order to facilitate the rotation of the wire lever, a rotating handle 8 is provided at the end of the wire lever 12 .

[0024] In a preferred embodiment of the present utility model, in order to limit the displacement of the sliding seat, a limiting slide rail 15 is provided on the base 1 , and the sliding seat 13 is slidably disposed on the limiting slide rail 15 .

[0025] In a preferred embodiment of the present invention, in order to enable the sliding sleeve to smoothly move up and down on the lifting column, a linear bearing is arranged in the sliding sleeve 4, and the lifting column 3 passes through the linear bearing.

[0026] In a preferred embodiment of the present invention, in order to facilitate observation of the adjusted height of the lifting plate, a scale 6 along the vertical direction is provided on the base 1 , and a pointer 5 is provided in the lifting plate 2 near the scale 6 .

[0027] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0029] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A centrifugal fan lifting device, characterized in that: The centrifugal fan lifting device comprises a base (1), a lifting column (3) is arranged on the base (1), a sliding sleeve (4) is sleeved on the lifting column (3), and a lifting plate (2) is connected to the sliding sleeve (4); The base (1) is provided with a support, the support is rotatably provided with a threaded lever (12), the threaded lever (12) is sleeved with a threaded screw nut (14), a sliding seat (13) is fixed on the threaded screw nut (14), a side of the sliding seat (13) is provided with an inclined slide rail (18), the bottom surface of the lifting plate (2) is provided with a seat body (16), a slide rail groove (17) is inclinedly provided on the seat body (16), the slide rail (18) is slidably engaged in the slide rail groove (17), so that the horizontal displacement of the sliding seat (13) can drive the seat body (16) to move up and down; the end of the threaded lever (12) is coaxially connected with a brake pad (7); A cylinder (9) is arranged on the base (1), and a piston rod of the cylinder (9) is connected to a brake block (11) via a connecting rod (10), so that the brake block (11) can approach or move away from the brake pad (7).

2. The centrifugal fan lifting device according to claim 1, characterized in that: A rotating handle (8) is provided at the end of the wire lever (12).

3. The centrifugal fan lifting device according to claim 2, characterized in that: A limit slide rail (15) is provided on the base (1), and the sliding seat (13) is slidably provided on the limit slide rail (15).

4. The centrifugal fan lifting device according to claim 1, characterized in that: A linear bearing is arranged inside the sliding sleeve (4), and the lifting column (3) passes through the linear bearing.

5. The centrifugal fan lifting device according to claim 1, characterized in that: The base (1) is provided with a scale (6) along the vertical direction, and the lifting plate (2) is provided with a pointer (5) near the scale (6).

Images