Damping structure of roof fan

Abstract

The embodiment of the utility model provides a roof fan vibration reduction structure which comprises a concrete vibration reduction table and spring vibration absorbers, the concrete vibration reduction table is horizontally arranged above a fan foundation, the multiple spring vibration absorbers are evenly arranged between the concrete vibration reduction table and the fan foundation, efficient vibration reduction can be conducted on a roof fan, and the service life of the roof fan is prolonged. The vibration reduction effect can meet the production requirement of a clean workshop; the concrete vibration reduction table is hollow so as to ensure that the sum of the weight of the concrete vibration reduction table and the weight of the roof fan does not exceed the design load of the fan foundation; and the embedded bolts used for being connected with the roof fan are embedded in the top of the concrete vibration reduction table, so that the mounting stability of the roof fan is guaranteed, and the situation that the vibration reduction effect is affected due to fan deviation caused by bolt mounting is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to building ventilation technical field, concretely relates to a roof fan damping structure. BACKGROUND

[0002] The vibration of the roof fan above the clean workshop needs to be reduced to the range allowed by the normal production of the clean workshop. The traditional roof fan damping structure usually adopts rubber damping pad or spring damper, and the damping effect is difficult to meet the needs of the normal production of the clean workshop. Although the high-efficiency damping structure of the damping pedestal combined with the spring damper can meet the damping requirement, the base load of the roof fan is limited (too much roof load cannot be increased to prevent safety hazards), so the damping structure of the roof fan must be redesigned to ensure that the damping effect is guaranteed while meeting the load requirement. SUMMARY

[0003] Therefore, the embodiment of the utility model provides a roof fan damping structure which can guarantee the damping effect while meeting the load requirement.

[0004] The roof fan damping structure provided by the embodiment of the utility model comprises a concrete damping pedestal and a spring damper, the concrete damping pedestal is horizontally arranged above a fan base, and a pre-buried bolt for connecting with a roof fan is pre-buried on the top of the concrete damping pedestal; a plurality of spring dampers are uniformly arranged between the concrete damping pedestal and the fan base to elastically support the concrete damping pedestal; and the concrete damping pedestal is hollow to ensure that the sum of the weight of the concrete damping pedestal and the roof fan is less than the design load of the fan base.

[0005] Optionally, four channel steels are symmetrically arranged at the four corners of the concrete damping pedestal, the length direction of the channel steel is consistent with the height direction of the concrete damping pedestal, a fixed plate is fixed in the channel steel and arranged horizontally, the top end of the spring damper abuts against the fixed plate and is tightly connected with the fixed plate through a height adjusting bolt.

[0006] Optionally, the bottom end of the spring damper is tightly connected with the fan base, and a rubber pad is arranged between the bottom end of the spring damper and the fan base.

[0007] Optionally, the concrete strength of the concrete damping pedestal is C30, and a reinforcing steel is arranged in the concrete damping pedestal.

[0008] Optionally, the pre-buried bolt is fixed with the reinforcing steel before the concrete of the concrete damping pedestal is poured.

[0009] The embodiment of the utility model has the following beneficial effects:

[0010] 1. The concrete damping platform and the spring damper are used for high-efficiency damping of the roof fan, so that the damping effect can meet the production requirements of the clean workshop.

[0011] 2. The concrete damping platform is hollow, so that the sum of the weight of the concrete damping platform and the roof fan does not exceed the design load of the fan foundation.

[0012] 3. The embedded bolt for connecting the roof fan is embedded in the top of the concrete damping platform, so that the stability of the roof fan installation is ensured, so as to avoid the fan deviation caused by bolt installation, and then affect the damping effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a structural schematic view of the embodiment of the present application.

[0015] Figure 2 It is a top view of the concrete damping platform in the embodiment of the present application.

[0016] The numbers in the figure represent:

[0017] 1. Concrete damping platform; 2. Spring damper; 3. Fan foundation; 4. Channel steel; 5. Fixed plate; 6. Height adjusting bolt; 7. Embedded bolt. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "top" and "bottom" are usually used to indicate the top and bottom of the device in actual use or working state, and the specific direction of the drawing surface in the drawing.

[0019] Please refer to Figure 1 , Figure 2The utility model discloses an embodiment provides a roof fan vibration reduction structure, including concrete damping platform 1 and spring damper 2. Concrete damping platform 1 is horizontally arranged above the fan foundation 3 (forms with roof structure pouring), is used for bearing roof fan (not shown in drawing), and can carry out vibration isolation to roof fan. Concrete damping platform 1 and fan foundation 3 are evenly provided with a plurality of spring dampers 2, and the spring dampers 2 can elastically support the concrete damping platform 1, cooperate the concrete damping platform 1 to reduce the vibration of roof fan, can play good vibration isolation effect, reduce the vibration of roof fan when operating to the allowable range of clean workshop production. In order to guarantee the stability of the damping structure, avoid the appearance of gravity deviation, the weight of the pipeline of roof fan can not be pressed on the concrete damping platform 1, and the pipeline needs to be elastically supported or hoisted additionally.

[0020] Specifically, the bottom end of the spring damper 2 is fastened and connected with the fan foundation 3 through bolts and the like fasteners, and a rubber pad is arranged between the bottom end of the spring damper 2 and the fan foundation 3. In order to ensure the stability of the spring damper 2, the top surface of the fan foundation 3 needs to be kept horizontal. At the same time, in order to prevent the adverse effects of accumulated water on the spring damper 2, the fan foundation 3 is preferably elevated by about 100 mm relative to the roof.

[0021] Further, four channel steels 4 are symmetrically arranged at the four corners of the concrete damping platform 1, and the length direction of the channel steel 4 is consistent with the height direction of the concrete damping platform 1. A horizontal fixing plate 5 is fixed in the channel steel 4 by welding or the like, the top end of the spring damper 2 abuts against the fixing plate 5, and the top end of the spring damper 2 is fastened and connected with the fixing plate 5 through height adjusting bolts 6. The height of the four corners of the concrete damping platform 1 can be adjusted through the height adjusting bolts 6, so that the concrete damping platform 1 can be kept horizontal; when installing and adjusting the level, the concrete damping platform 1 needs to be slowly raised or lowered, so as not to damage the spring damper 2. In order to ensure the overall strength of the concrete damping platform 1, the concrete strength of the concrete damping platform 1 in the embodiment of the utility model is C30, and the concrete damping platform 1 is provided with steel bars.

[0022] Since the design load of the fan foundation 3 is limited, in order to prevent safety hazards, the sum of the weight of the concrete damping platform 1 and the roof fan cannot exceed the design load of the fan foundation 3, and the size of the concrete damping platform 1 needs to be matched with the size of the fan and the size of the fan foundation 3, therefore, the concrete damping platform 1 is hollow in the embodiment of the utility model, so as to reduce the weight of the concrete damping platform 1.

[0023] In order to meet the requirements of installation size and load limit, the size and weight of the concrete damping platform 1 need to be designed according to the actual situation. For example, in a certain clean workshop project, the length of the fan foundation 3 reserved on the roof is 1900mm, the width is 1900mm, the design load is 1.3t, and the weight of the roof fan is 667Kg. Therefore, the weight of the concrete damping platform 1 cannot exceed 633Kg.

[0024] After the weight of the concrete damping platform 1 is determined, the size of the concrete damping platform 1 needs to be designed according to the size of the fan and the size of the fan foundation 3. The size of the concrete damping platform 1 includes three main sizes: length, width and thickness. Considering that steel bars need to be arranged in the concrete damping platform 1, the thickness is set to 150mm. The length and width need to match the size of the base of the roof fan. After checking, the length and width of the concrete damping platform 1 are designed to be 1800mm and 1520mm respectively. However, considering the weight limit of the concrete damping platform 1, a hollow part of 1300mmx1200mm needs to be arranged in the center of the concrete damping platform 1 to reduce its weight. At this time, the vibration isolation efficiency of the damping structure can be calculated to be 95.9%, which meets the production requirements of the clean workshop.

[0025] The traditional connection method of the roof fan and the concrete damping platform 1 is to use expansion bolts for fastening connection or to reserve holes in the concrete damping platform 1 and then to connect by pouring anchor bolts again. However, due to the size limitation of the concrete damping platform 1, the fixed leg of the roof fan is usually close to the edge of the concrete damping platform 1. When connecting, the bolt is easy to deviate, which will affect the firmness of the roof fan installation, and even may cause the fan to be offset, thereby affecting the damping effect. Therefore, the pre-buried bolt 7 is pre-buried in the top of the concrete damping platform 1 as a fixed bolt for connecting with the roof fan. The pre-buried bolt 7 can be fixed with the steel bars inside the concrete damping platform 1 before pouring the concrete, which is good in integrity and stable and firm.

[0026] In this paper, specific examples are applied to explain the principles and implementation modes of the utility model. The above examples are only used to help understand the technical solutions and core ideas of the utility model. Those skilled in the art should understand that the technical solutions recorded in the above examples can be modified or some technical features can be replaced equivalently. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A vibration reduction structure for rooftop fans, characterized in that: The system includes a concrete vibration damping platform and spring vibration dampers. The concrete vibration damping platform is horizontally positioned above the wind turbine foundation, and pre-embedded bolts for connection with the rooftop wind turbine are pre-embedded in the top of the concrete vibration damping platform. Multiple spring vibration dampers are evenly distributed between the concrete vibration damping platform and the wind turbine foundation to provide elastic support for the concrete vibration damping platform. The concrete vibration damping platform is hollow to ensure that the sum of the weight of the concrete vibration damping platform and the rooftop wind turbine does not exceed the design load of the wind turbine foundation.

2. The roof fan vibration reduction structure according to claim 1, characterized in that: Four channel steels are symmetrically fixed at the four corners of the concrete vibration damping platform. The length direction of the channel steel is consistent with the height direction of the concrete vibration damping platform. A horizontally fixed plate is fixed inside the channel steel. The top of the spring vibration damper abuts against the fixed plate and is fastened to the fixed plate by a height adjustment bolt.

3. The roof fan vibration reduction structure according to claim 1, characterized in that: The bottom end of the spring vibration damper is securely connected to the fan foundation, and a rubber pad is provided between the bottom end of the spring vibration damper and the fan foundation.

4. The roof fan vibration reduction structure according to claim 1, characterized in that: The concrete vibration damping platform has a concrete strength of C30 and is reinforced with steel bars.

5. The roof fan vibration reduction structure according to claim 4, characterized in that: The pre-embedded bolts are fixed together with the reinforcing bars before the concrete is poured into the concrete vibration damping platform.

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