Fan damping base of aircraft ground air conditioner

Abstract

The utility model relates to the technical field of aircraft ground air conditioners, and discloses a fan damping base of an aircraft ground air conditioner, which comprises a lower-layer supporting structure and an upper-layer supporting structure arranged above the lower-layer supporting structure, a foot plate of the fan is arranged at the top of the upper-layer supporting structure, a first damping block is arranged between the foot plate of the fan and the upper-layer supporting structure, the upper-layer supporting structure and the lower-layer supporting structure are arranged in a crossed and stacked mode from the overlook angle, and a second damping block is arranged between the upper-layer supporting structure and the lower-layer supporting structure. According to the draught fan damping base, through the two-stage damping design, the first damping block and the second damping block work cooperatively, and multi-direction vibration generated by a draught fan under the high-speed running working condition can be effectively restrained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of airplane ground air conditioning, especially a fan damping base of airplane ground air conditioning. BACKGROUND

[0002] When the airplane is parked on the ground, the air conditioning system of the airplane can not effectively maintain the suitable temperature and humidity in the cabin, and the airplane ground air conditioning can provide the cabin and the cockpit with fresh air, adjust the air temperature and humidity, so that the passengers and the crew are in a comfortable environment during boarding, disembarking and waiting.

[0003] In order to make the fan of the airplane ground air conditioning reach the appropriate installation height, the fan will be installed on the base, so the base provides stable bearing for the fan. In recent years, with the continuous growth of the demand for optimization and efficiency improvement of ground operation process in the aviation industry, the operating parameters of the fan of the airplane ground air conditioning are constantly evolving, and the operating speed is gradually accelerated. The old base is difficult to effectively dampen the fan under high-speed operation condition, so the noise and imbalance wear problems caused by the vibration of the fan are increasingly prominent.

[0004] Therefore, the prior art still needs to be improved and improved. UTILITY MODEL CONTENT

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a fan damping base of airplane ground air conditioning, which aims to improve the damping effect of the fan.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A fan damping base of airplane ground air conditioning, comprising a lower support structure and an upper support structure arranged above the lower support structure, a foot plate of the fan is arranged on the top of the upper support structure, and a first damping block is arranged between the foot plate of the fan and the upper support structure, and in the top view, the upper support structure and the lower support structure are arranged in cross-laminated manner, and a second damping block is arranged between the upper support structure and the lower support structure.

[0008] As a further improvement of the above technical scheme, the lower support structure comprises a plurality of lower support members arranged at intervals, and the upper support structure comprises a plurality of upper support members arranged at intervals.

[0009] As a further improvement of the above technical scheme, the lower support member and the upper support member have the same structure and each comprise a door-shaped sheet metal body and two flat foot edges respectively outwardly folded at the two bottom edges of the door-shaped sheet metal body.

[0010] As a further improvement of the above technical solution, the lower support member is provided with three and extends along the left-right direction, the upper support member is provided with two and extends along the front-rear direction, the upper support member spans all the lower support members, and the flat foot edge of the upper support member is connected to the top of the door-shaped metal body of the corresponding lower support member through a pull rivet nut; and the foot plate of the fan is connected to the top of the door-shaped metal body of the corresponding upper support member through a pull rivet nut.

[0011] As a further improvement of the above technical solution, the first damping block extends along the front-rear direction, and the second damping block is arranged at the connection position of the upper support member and each lower support member and extends along the left-right direction.

[0012] As a further improvement of the above technical solution, the second damping block and the first damping block are both through-hole rubber blocks.

[0013] As a further improvement of the above technical solution, the flat foot edge of the lower support member is arranged with first mounting holes, the flat foot edge of the upper support member is arranged with second mounting holes corresponding to the number of the lower support members, the top of the door-shaped metal body of the lower support member is provided with third mounting holes corresponding to the second mounting holes, and the top of the door-shaped metal body of the upper support member is arranged with fourth mounting holes.

[0014] The fan damping base provided by the utility model has the advantages that the fan damping base is designed with double-stage damping, the first damping block and the second damping block work cooperatively, can effectively inhibit multi-directional vibration of the fan under high-speed running conditions, compared with the old single-structure base, the double-stage damping mode greatly reduces the transmission amplitude of vibration, thereby significantly reducing noise caused by fan vibration, in addition, the double-stage damping can effectively reduce the strength of vibration transmission to the fan itself and other parts of the base, reduces the imbalance phenomenon of parts caused by long-term vibration, reduces abnormal friction and wear between parts, prolongs the service life of the fan and the whole airplane ground air conditioning system, and reduces the maintenance cost and maintenance frequency of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 A perspective view of a fan provided on the damping base.

[0016] Fig. 2 A perspective view of the fan damping base provided by the utility model.

[0017] Fig. 3 A perspective view of a lower support member.

[0018] Main element symbol explanation: 1 - lower support structure, 11 - lower support member, 111 - door-shaped sheet metal body, 112 - flat foot edge, 2 - upper support structure, 21 - upper support member, 31 - first shock absorbing block, 32 - second shock absorbing block, 4 - pull rivet nut, 51 - first mounting hole, 52 - second mounting hole, 53 - third mounting hole, 54 - fourth mounting hole, 6 - fan, 61 - foot plate. DETAILED DESCRIPTION

[0019] The utility model provides a fan 6 shock absorbing base of aircraft ground air conditioner, in order to make the purpose, technical scheme and effect of the utility model more clear, explicit, the following refers to the drawing and raises example to the utility model further detailed explanation. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the protection scope of the utility model.

[0020] Please refer to Figs. 1 to 3 The utility model provides a fan 6 shock absorbing base of aircraft ground air conditioner, including lower support structure 1 and the upper support structure 2 of setting at lower support structure 1 top, the foot plate 61 of fan 6 sets up at the top of upper support structure 2 and is equipped with first shock absorbing block 31 between the foot plate 61 of fan 6 and upper support structure 2, under the overhead angle, upper support structure 2 and lower support structure 1 are cross and are arranged in stack and are equipped with second shock absorbing block 32 between upper support structure 2 and lower support structure 1.

[0021] When fan 6 operates and produces vibration, the foot plate 61 of fan 6 first contacts the first shock absorbing block 31 on the top of the upper support structure 2, which is made of a material with good elastic and damping properties. When the foot plate 61 of the fan 6 transmits vibration, it can absorb part of the vibration energy through its elastic deformation, thereby preliminarily reducing the amplitude of the vibration. For example, when the fan 6 produces a large amplitude of up-down vibration, the first shock absorbing block 31 will be compressed and stretched, and in this process, the kinetic energy of the vibration is converted into elastic potential energy and partially dissipated, thereby reducing the vibration intensity directly transmitted to the upper support structure 2. The vibration after the preliminary shock absorption by the first shock absorbing block 31 will continue to be transmitted to the upper support structure 2. Since the upper support structure 2 and the lower support structure 1 are arranged in cross and stack under the overhead angle and the second shock absorbing block 32 is arranged in the middle, the second shock absorbing block 32 also has shock absorbing performance. When the upper support structure 2 receives the remaining vibration from the fan 6 after the shock absorption by the first shock absorbing block 31, the vibration will be further transmitted to the second shock absorbing block 32. The second shock absorbing block 32 again absorbs and dissipates the vibration by using its own elasticity and damping properties. For example, for the horizontal or other complex direction vibration components, the second shock absorbing block 32 can effectively prevent their transmission between the two support structures, further reducing the propagation of vibration to the overall base and the surrounding environment.

[0022] The fan 6 damping base provided by the utility model reduces the transmission amplitude of vibration greatly through double-stage damping design, the first damping block 31 and the second damping block 32 work cooperatively, and can effectively inhibit the multidirectional vibration of the fan 6 under high-speed running working condition. Compared with the old single structure base, the double-stage damping mode greatly reduces the transmission amplitude of vibration, thereby significantly reducing the noise generated by the vibration of the fan 6. In addition, the double-stage damping can effectively reduce the strength of vibration transmission to the fan 6 itself and other parts of the base, so that the unbalanced force suffered by the rotating parts (such as impeller, etc.) in the fan 6 and other mechanical structures (such as shaft, bearing, etc.) connected with the fan 6 is greatly reduced. In this way, the imbalance phenomenon of parts caused by long-term vibration is reduced, the abnormal friction and wear between parts are reduced, the service life of the fan 6 and the whole aircraft ground air conditioning system is prolonged, and the maintenance cost and maintenance frequency of the equipment are reduced.

[0023] Specifically, the lower support structure 1 comprises a plurality of interval arranged lower support members 11; the upper support structure 2 comprises a plurality of interval arranged upper support members 21. The plurality of interval arranged support members make the weight distribution of the whole base more reasonable. Compared with the integral support structure, the dispersed layout can avoid excessive concentration of weight in some parts, thereby reducing the local pressure on the bottom surface of the air conditioner case, and being beneficial to maintaining the stability of the base under different case bottom surface conditions.

[0024] It can be understood that the interval arranged upper and lower support members 11 can better adapt to the complex vibration mode of the fan 6 under different working conditions. When the fan 6 vibrates, each support member can independently produce a small displacement and deformation to absorb vibration energy according to its position and stress condition, and cooperates with each other, thereby improving the adaptability and buffering capacity of the whole base structure to vibration. For example, under the condition of asymmetric vibration caused by the unbalanced force of the high-speed rotation of the fan 6, the support members at different positions can respond and effectively damp respectively, and will not easily produce stress concentration and local resonance phenomenon like the integral structure.

[0025] In the embodiment, the lower support member 11 and the upper support member 21 have the same structure and each include a door-shaped sheet metal body 111 and two flat foot edges 112 respectively outwardly folded at two bottom edges of the door-shaped sheet metal body 111. The shape of the door-shaped sheet metal body 111 gives the lower support member 11 and the upper support member 21 good mechanical structural properties. The shape similar to a door frame can effectively bear forces from different directions, whether it is the vertical gravity and impact force generated by vibration of the fan 6 or the lateral force caused by external factors (such as air flow disturbance, equipment movement, etc.) in the horizontal direction, and can be better supported and dispersed.

[0026] From the aspect of manufacturing, the lower support member 11 and the upper support member 21 with the same structure are beneficial to standardized production. In terms of material procurement, sheet metal materials with the same specifications and materials can be purchased in batches, reducing material costs. In the production and manufacturing process, the unified structural design enables the production process to be standardized and streamlined, reducing the adjustment and process conversion costs of production equipment and improving production efficiency. For example, in the process of stamping, there is no need to frequently change the mold, and a large number of support members with the same structure can be quickly and efficiently produced, thereby saving production costs as a whole and improving the performance-price ratio of the product.

[0027] Specifically, the lower support member 11 is provided with three and extends in the left-right direction, and the upper support member 21 is provided with two and extends in the front-rear direction, and the upper support member 21 spans all the lower support members 11, that is, the three lower support members 11 extending in the left-right direction and the two upper support members 21 extending in the front-rear direction and spanning all the lower support members 11 are interconnected, thereby constructing a multi-dimensional force frame. When the fan 6 operates to generate vibration and gravity load, the force can be transmitted and dispersed along the frame structure composed of the upper support member 21 and the lower support member 11 in multiple paths. For example, the vertical gravity of the fan 6 is first transmitted to the upper support member 21, and then uniformly dispersed to each lower support member 11 through the connection points of the upper support member 21 and the lower support member 11, thereby avoiding stress concentration in a certain part or several parts, reducing the risk of damage of a single component due to excessive stress, and improving the carrying capacity and durability of the entire base structure.

[0028] Further, the flat foot edge 112 of the upper support member 21 is connected to the top of the corresponding door-shaped metal body 111 of the lower support member 11 by a pull-rivet nut 4, and the foot plate 61 of the fan 6 is connected to the top of the corresponding door-shaped metal body 111 of the upper support member 21 by a pull-rivet nut 4. This mounting method can form a reliable mechanical connection method, and the pull-rivet nut 4 connection has high fastening force and shear resistance, which can effectively prevent the loosening phenomenon of each component due to vibration during the operation of the fan 6, and ensure the integrity and stability of the entire fan 6 shock-absorbing base structure. Even in the case of strong vibration and complex stress generated by high-speed operation of the fan 6, this connection method can maintain the relative positional relationship between the components unchanged, ensuring the stable support and shock-absorbing function of the base to the fan 6.

[0029] More specifically, the first shock-absorbing block 31 extends in the front-rear direction, and the second shock-absorbing block 32 is arranged at the connection between the upper support member 21 and each lower support member 11 and extends in the left-right direction. The first shock-absorbing block 31 extends in the front-rear direction and can effectively absorb the vibration generated by the fan 6 in the front-rear direction, for example, the vibration energy generated in this direction due to unbalanced force or airflow disturbance when the fan 6 impeller rotates can be dissipated by the elastic deformation of the first shock-absorbing block 31. The second shock-absorbing block 32 extends in the left-right direction and is arranged at the connection between the upper support member 21 and each lower support member 11, and can buffer the vibration transmitted in the left-right direction. The two cooperate with each other to form a multi-directional shock-absorbing system, which comprehensively covers the vibration direction that may occur during the operation of the fan 6. Compared with the single-direction shock-absorbing design, the shock-absorbing efficiency is greatly improved, the vibration amplitude of the fan 6 as a whole is reduced, and the noise and part wear caused by vibration are reduced.

[0030] Preferably, the second shock-absorbing block 32 and the first shock-absorbing block 31 are both rubber blocks with through holes. Rubber itself has good elasticity, damping and wear resistance. Its elasticity can store and release energy when vibrating, and play a buffering role; the damping can convert vibration energy into heat energy and other forms to consume, reducing the duration and intensity of vibration. The design of the through hole is for the pull-rivet nut 4 to pass through.

[0031] The first mounting hole 51 is arranged on the flat foot edge 112 of the lower support member 11, the second mounting hole 52 is arranged on the flat foot edge 112 of the upper support member 21, the number of the second mounting hole 52 is same as that of the lower support member 11, and the third mounting hole 53 corresponding to the second mounting hole 52 is arranged on the top of the door-shaped metal body 111 of the lower support member 11, and the fourth mounting hole 54 is arranged on the top of the door-shaped metal body 111 of the upper support member 21. The arrangement of each mounting hole can realize accurate positioning and connection between the lower support member 11 and the upper support member 21 and between the foot plate 61 of the fan 6 and the upper support member 21. In the assembly process, the corresponding mounting hole can guide the connecting piece (such as a pull rivet nut 4, a bolt, etc.) to accurately pass through and be fixed, so that the relative position relationship between the components meets the design requirements, thereby constructing a stable and reliable fan 6 shock-absorbing base structure. Precise positioning helps to uniformly distribute stress and avoid local stress concentration caused by installation deviation, thereby improving the stability and safety of the entire base when bearing the gravity and vibration of the fan 6.

[0032] In fact, in order to ensure the stability of the foot plate 61 of the fan 6, the height of the foot plate 61 of the fan 6 is not suitable to be set too high, and the overall installation height of the fan 6 can be adjusted by increasing the height of the upper support member 21 and the lower support member 11.

[0033] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0034] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection or can communicate with each other, it can be direct connection, or indirect connection through intermediate medium, or the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0035] It can be understood that, for those skilled in the art, equivalent replacement or change can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. A fan isolation mount for an aircraft ground air conditioner, comprising: The fan foot plate is arranged on the top of the upper support structure and a first shock-absorbing block is arranged between the fan foot plate and the upper support structure.

2. The fan isolation mount for an aircraft ground air conditioner of Claim 1, wherein, The lower support structure comprises a plurality of spaced lower support members, and the upper support structure comprises a plurality of spaced upper support members.

3. The fan isolated base of an aircraft ground air conditioning unit of claim 2, wherein, The lower support members and the upper support members are identical in structure and each comprise a door-shaped metal plate and two flat foot edges respectively outwardly folded at two bottom edges of the door-shaped metal plate.

4. The fan isolation mount for an aircraft ground air conditioner of Claim 3, wherein, The lower support members are provided with three and extend along the left-right direction, and the upper support members are provided with two and extend along the front-rear direction, the upper support members span all the lower support members, the flat foot edges of the upper support members are connected with the top of the door-shaped metal plate of the corresponding lower support members through a pull rivet nut, and the foot plate of the fan is connected with the top of the door-shaped metal plate of the corresponding upper support member through a pull rivet nut.

5. The fan isolation mount for an aircraft ground air conditioner of Claim 4, wherein, The first shock-absorbing block extends along the front-rear direction, and the second shock-absorbing block extends along the left-right direction.

6. The fan cushion for an aircraft ground air conditioner of claim 5, wherein, The second shock-absorbing block and the first shock-absorbing block are both rubber blocks with through holes.

7. The fan isolated base of an aircraft ground air conditioning unit of claim 4 wherein, The flat foot edges of the lower support members are arranged with first mounting holes, the flat foot edges of the upper support members are arranged with second mounting holes corresponding to the lower support members in number and one-to-one correspondence, the top of the door-shaped metal plate of the lower support members is provided with third mounting holes corresponding to the second mounting holes, and the top of the door-shaped metal plate of the upper support members is arranged with fourth mounting holes.

Images