Firm and high-stability fixing structure of large-flow fan

Abstract

The utility model discloses a firm and strong-stability fixing structure of a large-flow Roots blower, which assists the fixation of the blower through supporting legs with specific structures, matched supporting iron plates and angle irons, and enables the structure below the supporting iron plates to be embedded in concrete so as to realize the firm and strong-stability fixation of the blower. In addition, the connecting ribs can be welded to the edges of the angle iron to further fix the angle iron, and when the connecting ribs are embedded in concrete, a more stable fixing effect can be provided for the fixing structure. Therefore, the problem of bolt looseness caused by vibration of the fan during working is avoided.

Description

Technical Field

[0001] The utility model relates to the field of fan installation, in particular to a fixing structure for a large-flow Roots blower with high firmness and strong stability. Background Art

[0002] Roots blowers play an important role in the field of industrial air supply. Their large-flow characteristics make them highly favored in many industrial applications. However, during the operation of such large-flow blowers, due to the special working principle and working environment, they often face some challenges, especially the vibration problem. Vibration not only affects the normal operation of the blower but may also cause damage to the fixing structure.

[0003] The working principle of a Roots blower is that two meshing rotors rotate in a cylinder to compress and convey air. This rotational motion is stable under ideal conditions, but in actual applications, due to the influence of various factors, the rotation of the rotors may generate vibrations. First, the imbalance of the rotors is one of the main causes of vibration. There may be slight imbalances in the manufacturing and assembly processes of the rotors, and these imbalances will be amplified during high-speed rotation, resulting in vibrations. Second, the air flow inside the blower will also fluctuate due to pressure changes, and this fluctuation will also be transmitted to the external structure of the blower, further exacerbating the vibration.

[0004] The impact of vibration on the fixing structure of the blower is significant. Bolts, as important components connecting the blower to the ground, their stability is directly related to the operating safety of the blower. When the blower vibrates, the bolts will be subjected to repeated shear and tensile forces, and the action of these forces will gradually weaken the fastening force of the bolts. Especially under the high-load working conditions of large-flow blowers, the forces on the bolts will be more significant. Over time, the fastening force of the bolts gradually weakens, and ultimately the bolts may become completely loose, the blower loses its fixation, and may even shift or overturn, posing serious safety hazards.

[0005] Therefore, in order to avoid the problem of the fixing failure of the Roots blower caused by vibration, it is necessary to improve its fixing structure to enable the large-flow Roots blower to be firmly and stably fixed, ensuring the safety and normal operation of production. Summary of the Utility Model

[0006] To solve the problems existing in the prior art, the purpose of the utility model is to disclose a fixing structure for a large-flow blower with high firmness and strong stability. By improving the fixing structure of the Roots blower on the cement floor, it can ensure that it can still be well fixed under the full-load large-flow working conditions, and will not cause the problem of loose fixing bolts due to long-term use, ensuring its firm fixation and strong stability.

[0007] To achieve the above effects, the present application discloses a fixing structure for a large-flow fan that is sturdy and has strong stability. One side of the fan is connected to a motor. The bottom of the fan is fixed with a support frame through a fixing member. The support frame includes two groups of symmetrically arranged support legs. The long end of the support leg on the side close to the motor extends to the lower part of the motor outside the fan. The length of the short end on the other side of the support leg is shorter than that of the long end. Fixing holes are provided at the ends of both the long end and the short end. The lower surface of the support leg abuts against the upper surface of the support iron plate. Angle irons are fixed at the corresponding positions of the lower surface of the support iron plate and the support leg. After the fixing bolts sequentially pass through the fixing holes, the support iron plate, and the angle irons, the fan is fixed by fixing nuts. The structure below the support iron plate is buried in concrete.

[0008] Further, a connecting rib is fixedly provided at the lowermost section of the angle iron.

[0009] Further, there are at least three groups of the connecting ribs, and the connecting ribs are equidistantly spaced from each other.

[0010] Further, the connecting rib is welded to the angle iron, and the connecting rib fixed to the angle iron has tensile prestress.

[0011] Further, raised transverse ribs are provided on the surface of the connecting rib.

[0012] Further, the length of the angle iron is greater than the length of the support leg.

[0013] Further, the length of the connecting rib is greater than the distance between the inner sides of the support legs and less than the distance between the outer sides of the support legs.

[0014] Further, the bottom of the fixing bolt does not exceed the position of the connecting rib.

[0015] The beneficial effects of the present utility model include:

[0016] The fixing structure disclosed by the present novelty fixes the fan by means of the support legs with a specific structure and in cooperation with the support iron plate and the angle iron, and buries the structure under the support iron plate in concrete to achieve a sturdy and stable fixing of the fan.

[0017] In addition, the angle iron can be further fixed by welding the connecting rib to the edge of the angle iron. When the connecting rib is buried in concrete, it can provide a more stable fixing effect for this fixing structure. Thus, the problem of bolt loosening caused by the vibration of the fan during operation can be avoided. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the bottom structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the state when the present invention is in use.

[0022] Figure 4 It is a schematic diagram of the side view structure of the present invention.

[0023] Wherein: 1. Fan, 2. Motor, 3. Fixing member, 4. Support frame, 5. Support iron plate, 6. Angle iron, 7. Fixing bolt, 8. Fixing nut, 9. Connecting rib, 10. Transverse rib, 41. Support leg, 42. Long end, 43. Short end, 44. Fixing hole, 100. Concrete. Specific embodiments

[0024] The following will further elaborate on the specific embodiments of the present invention in the form of combining with the drawings. However, the following embodiments only list the relatively preferred embodiments, which only serve to explain and help understand the present invention, and should not be construed as a limitation to the present invention.

[0025] Reference Figures 1-4 , a fixing structure for a large-flow fan with high strength and stability. One side of the fan 1 is connected to the motor 2. The bottom of the fan 1 is fixed with a support frame 4 through a fixing member 3. The support frame includes two groups of symmetrically arranged support legs 41. The long end 42 of the support leg on the side close to the motor 2 extends to the lower part of the motor outside the fan. The length of the short end 43 on the other side of the support leg is shorter than that of the long end 42. Fixing holes 44 are provided at the ends of both the long end and the short end. The lower surface of the support leg abuts against the upper surface of the support iron plate 5. Angle irons 6 are fixed at the corresponding positions of the lower surface of the support iron plate and the support leg. After the fixing bolt 7 passes through the fixing hole 44, the support iron plate 5 and the angle iron 6 in sequence, the fan 2 is fixed through the fixing nut 8. The structure below the support iron plate is buried in the concrete 100.

[0026] The fan 1 is connected to the motor 2 on one side and is connected to the support frame 4 through the fixing member 3 at the bottom. The support frame is composed of two symmetric support legs 41. The long end 42 on the side close to the motor 2 extends to the lower part of the motor outside the fan, while the short end 43 on the other side is relatively short. Fixing holes 44 are provided at the ends of the long end and the short end for installing the fixing bolts 7. The lower surface of the support leg abuts against the upper surface of the support iron plate 5, and the lower surface of the support iron plate is fixed to the corresponding position of the support leg through the angle iron 6, enhancing the stability of the connection. The fixing bolt 7 passes through the fixing hole 44, the support iron plate 5 and the angle iron 6, and firmly fixes the fan 2 through the fixing nut 8. To further enhance the stability, the structure below the support iron plate is buried in the concrete 100. The design of the whole structure ensures that the fan can operate stably under high load, and at the same time has good seismic resistance and fixity.

[0027] As a preferred embodiment, a connecting rib 9 is fixedly arranged at the lowermost section of the angle iron 6. It significantly enhances the strength and stability of the overall structure, enabling the fan to be more stable when bearing high loads and wind forces. Secondly, the presence of the connecting rib 9 improves the bending resistance of the support frame, reducing deformation or damage caused by wind force or other external forces. In addition, this design also optimizes the load distribution, making the connection between the support frame and the support iron plate more stable and reducing loosening caused by vibration or wind force.

[0028] Preferably, at least three groups of connecting ribs are provided, and the connecting ribs are arranged at equal intervals. The connecting ribs are welded to the angle iron 6, and the connecting ribs fixed to the angle iron have tensile prestress. By pre-tensioning the connecting ribs to form prestress before welding, it can better ensure the stability of the whole after being buried in the concrete.

[0029] In addition, the surface of the connecting rib is provided with raised transverse ribs 10. The length of the angle iron is greater than the length of the support leg. The length of the connecting rib is greater than the distance between the inner sides of the support legs and less than the distance between the outer sides of the support legs. The bottom of the fixing bolt 7 does not exceed the position of the connecting rib. By combining one or more of the above-mentioned solutions, the effect of further enhancing stability can be achieved.

[0030] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A strong and stable fixing structure for a large flow fan, characterized by: One side of the fan (1) is connected to the motor (2); a support frame (4) is fixed to the bottom of the fan (1) via a fixing member (3); the support frame comprises two groups of symmetrically arranged support legs (41); a long end (42) of the support leg on one side close to the motor (2) extends to the lower part of the motor outside the fan; a short end (43) on the other side of the support leg is shorter than the long end (42); and fixing holes (44) are provided at the ends of the long end and the short end; the lower surface of the support leg abuts against the upper surface of the support iron plate (5); angle irons (6) are fixed at corresponding positions of the lower surface of the support iron plate and the support leg; fixing bolts (7) are passed through the fixing holes (44), the support iron plate (5) and the angle iron (6) in sequence, and then the fan (1) is fixed via fixing nuts (8); and the structure below the support iron plate is buried in concrete (100).

2. A strong and stable fixing structure for a large flow fan according to claim 1, characterized in that: The lowermost section of the angle iron (6) is fixedly provided with a connecting rib (9).

3. A strong and stable fixing structure for a large flow fan according to claim 2, characterized in that: The connecting ribs are arranged in at least three groups, and the connecting ribs are arranged at equal intervals.

4. A strong and stable fixing structure for a large flow fan according to claim 2, characterized in that: The connecting ribs are welded to the angle iron (6), and the connecting ribs fixed to the angle iron have a tensioning prestress.

5. A strong and stable fixing structure for a large flow fan according to claim 2, characterized in that: The surface of the connecting rib is provided with a raised transverse rib (10).

6. A strong and stable fixing structure for a large flow fan according to claim 1, characterized in that: The length of the angle iron is greater than the length of the supporting leg.

7. A strong and stable fixing structure for a large flow fan according to claim 2, characterized in that: The length of the connecting rib is greater than the distance between the inner sides of the supporting legs and less than the distance between the outer sides of the supporting legs.

8. The fixing structure of a large flow fan with strong strength and stability according to claim 2 is characterized by: The bottom of the fixing bolt (7) does not exceed the position of the connecting rib.

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