Three-dimensional vibration isolation roof lifting field structure based on belleville spring devices and lead core rubber supports

Abstract

The invention discloses a three-dimensional vibration isolation roof lifting field structure based on a belleville spring device and a lead core rubber support. The device comprises a roof floor, a lead core rubber support, a belleville spring and a lifting field plate, the lead core rubber support comprises a lead core, a rubber filling body, an annular steel plate, an upper connecting plate and a lower connecting plate; the belleville spring comprises a plurality of belleville springs, a protective sleeve, a gland and a base. A series of problems that existing building roof vibration isolation equipment is low in reliability, short in service life, single in vibration isolation mode and the like are solved. The three-dimensional vibration isolation roof take-off and landing field structure based on the belleville spring device and the lead core rubber support guarantees normal operation of the vertical take-off and landing aircraft, greatly improves the comfort level of personnel in a building, and meanwhile reduces the vibration influence of operation of the vertical take-off and landing aircraft on the roof structure of the building.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vibration reduction and isolation in the construction of low-altitude take-off and landing field, and particularly relates to a three-dimensional vibration isolation roof take-off and landing field structure based on a butterfly spring device and a lead rubber bearing. BACKGROUND

[0002] With the rapid development of urban air traffic and vertical take-off and landing aircraft, the construction of a take-off and landing field for a vertical take-off and landing aircraft on a building roof plays an important role in ensuring the efficient operation of the vertical take-off and landing aircraft. However, although the selection of a roof as a take-off and landing field can provide convenience for the operation of the vertical take-off and landing aircraft, the huge impact load and continuous vibration generated by the vertical take-off and landing aircraft during take-off and landing not only pose a threat to the safety of the roof structure, but also amplify noise when the continuous vibration is transmitted to the building, thereby affecting the comfort of the personnel in the building. At present, the vibration isolation measures for the roof vertical take-off and landing field mainly use spring elastic damping materials, hydraulic or pneumatic shock absorbers, but such shock absorbers often have the following defects:

[0003] 1. The hydraulic and pneumatic shock absorbers often have a complex structure and occupy a large space, which is not suitable for narrow spaces such as roofs, and are prone to sealing failure due to long-term exposure to the harsh environment on the roof, thereby causing problems such as liquid leakage and air leakage, thus reducing the reliability of the device and failing to achieve three-dimensional vibration isolation.

[0004] 2. Although the spring elastic damping material shock absorber has a simple structure, it is prone to creep and aging under long-term impact load and harsh roof environment, thereby causing permanent deformation and material failure, fast performance decay, short service life, and single vibration isolation effect. SUMMARY

[0005] In order to solve the above problems, the purpose of the present application is to provide a three-dimensional vibration isolation roof take-off and landing field structure based on a butterfly spring device and a lead rubber bearing.

[0006] In order to achieve the above purpose, the three-dimensional vibration isolation roof take-off and landing field structure based on a butterfly spring device and a lead rubber bearing provided by the present application comprises a roof floor, a lead rubber bearing, a butterfly spring device, and a take-off and landing field plate; wherein the take-off and landing field plate is horizontally arranged above the roof floor; the lower end of each butterfly spring device is fixed to the upper end of one lead rubber bearing to form a shock absorption assembly; a plurality of shock absorption assemblies are arranged in a distributed manner between the take-off and landing field plate and the roof floor, and the upper end of the butterfly spring device and the lower end of the lead rubber bearing are fixed to the take-off and landing field plate and the roof floor, respectively.

[0007] The lead rubber bearing comprises a lead core, a rubber filling body, annular steel plates, an upper connecting plate and a lower connecting plate; the upper connecting plate and the lower connecting plate are horizontally arranged in the up-down direction, and a groove is formed in the bottom surface of the upper connecting plate and the top surface of the lower connecting plate respectively, and a plurality of connecting holes are formed in the edge parts; the upper end and the lower end of the lead core are respectively embedded in the grooves on the upper connecting plate and the lower connecting plate; a plurality of annular steel plates are horizontally arranged at intervals, and the central holes are fixed on the outer circumferential surface of the lead core; the rubber filling body covers the outside of the lead core and all the annular steel plates between the upper connecting plate and the lower connecting plate; the lower connecting plate is fixed on the roof floor by bolts penetrating through the connecting holes.

[0008] The said device comprises a plurality of butterfly springs, a protective sleeve, a gland and a base; the base is horizontally arranged, and a female screw hole is formed in the middle of the top surface, and a plurality of connecting holes are formed in the edge parts; the base is fixed on the upper connecting plate by bolts and nuts penetrating through the corresponding connecting holes of the base and the upper connecting plate; the butterfly spring comprises an upper butterfly spring body, a lower butterfly spring body, a limiting rod, a strong spring, a pressing ring, a lower guide cylinder, a threaded groove, a threaded ring and an upper guide cylinder; the threaded groove and the threaded ring are horizontally arranged in the up-down direction; the inner circumferential surface of the threaded groove is formed with internal threads; the outer circumferential surface of the lower part of the threaded ring is formed with external threads; the upper butterfly spring body and the lower butterfly spring body are symmetrically arranged in the up-down direction, and the central hole of the upper butterfly spring body is fixed on the outer circumferential surface of the threaded groove, and the central hole of the lower butterfly spring body is fixed on the upper part of the outer circumferential surface of the threaded ring; the edge parts of the upper butterfly spring body and the lower butterfly spring body are respectively provided with a pressing ring, and the adjacent pressing rings are arranged in close contact; the lower end of the lower guide cylinder is fixed on the top surface of the threaded ring, and the upper end edge horizontally extends outward to form an outer rim; the upper end of the upper guide cylinder is fixed on the bottom surface of the threaded groove, and the lower end edge horizontally extends inward to form an inner rim, and the lower part is sleeved on the outer side of the upper part of the lower guide cylinder, and the inner rim is below the outer rim of the lower guide cylinder; the two ends of the two limiting rods are respectively connected to the upper part of the inner circumferential wall of the upper guide cylinder and the lower part of the inner circumferential wall of the lower guide cylinder; the upper end and the lower end of the strong spring are respectively fixed on the middle part of the two limiting rods; a plurality of butterfly springs are stacked together, the threaded ring on the upper butterfly spring is threadedly connected in the threaded groove on the lower butterfly spring or the female screw hole on the base; the gland is composed of a base plate and a force transmission rod; the base plate is horizontally arranged, and a convex ring is protruded downward in the middle of the bottom surface, and the outer circumferential surface of the convex ring is formed with external threads matched with the threaded groove on the uppermost butterfly spring; the lower end of the force transmission rod is fixed on the middle part of the top surface of the base plate, and the upper end is connected to the bottom surface of the runway plate; the protective sleeve covers the outside of the plurality of butterfly springs and the gland, and the lower end is fixed on the top surface of the base, and the middle part of the top surface is formed with an opening for penetrating the force transmission rod on the upper gland.

[0009] The upper butterfly spring body and the lower butterfly spring body are connected with the pressing ring by welding.

[0010] The annular steel plates are connected with the lead core by welding.

[0011] The pressure cap, protective sleeve, base, upper connecting plate, and lower connecting plate are all made of steel; the upper and lower butterfly spring bodies are made of aluminum-copper alloy.

[0012] The protective sleeve is connected to the base by welding.

[0013] The take-off and landing platform plate is connected to the force transmission rod on the pressure cover by welding.

[0014] The three-dimensional vibration-isolated rooftop takeoff and landing field structure based on a disc spring device and lead-core rubber supports provided by this invention fully considers vibration isolation in both horizontal and vertical directions. This greatly reduces the impact and vibration on the roof structure in all directions during VTOL aircraft takeoff and landing, and solves the problems of low reliability of traditional hydraulic and pneumatic vibration isolation equipment, short lifespan of spring elastic damping material vibration isolation measures, and limited vibration isolation effect. The three-dimensional vibration-isolated rooftop takeoff and landing field structure based on a disc spring device and lead-core rubber supports ensures the normal operation of VTOL aircraft, greatly improves the comfort of people inside the building, and reduces the vibration impact of VTOL aircraft operation on the building's roof structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the lead-core rubber support in the three-dimensional vibration isolation roof landing field structure based on the butterfly spring device and lead-core rubber support provided by the present invention.

[0016] Figure 2 This is a schematic diagram of a single butterfly spring in the three-dimensional vibration isolation roof landing field structure based on a butterfly spring device and a lead-core rubber support provided by the present invention.

[0017] Figure 3 This is a schematic diagram of the butterfly spring device in the three-dimensional vibration isolation roof landing field structure based on the butterfly spring device and lead core rubber support provided by the present invention.

[0018] Figure 4 This is a schematic diagram of a three-dimensional vibration isolation roof landing field structure based on a butterfly spring device and a lead-core rubber support provided by the present invention. Detailed Implementation

[0019] The following describes in detail the three-dimensional vibration isolation roof landing field structure based on a butterfly spring device and a lead-core rubber support provided by the present invention, with reference to examples and accompanying drawings.

[0020] like Figures 1-4As shown, the three-dimensional vibration isolation roof landing field structure based on a butterfly spring device and a lead-core rubber support provided by the present invention includes a roof slab 1, a lead-core rubber support 2, a butterfly spring device 3, and a landing field plate 4; wherein, the landing field plate 4 is horizontally arranged above the roof slab 1; the lower end of each butterfly spring device 3 is fixed to the upper end of a lead-core rubber support 2 to form a vibration damping component; multiple vibration damping components are arranged in a distributed manner between the landing field plate 4 and the roof slab 1, and the upper end of the butterfly spring device 3 and the lower end of the lead-core rubber support 2 are respectively fixed to the landing field plate 4 and the roof slab 1.

[0021] The lead-core rubber support 2 includes a lead core 21, a rubber filler 22, an annular steel plate 23, an upper connecting plate 24, and a lower connecting plate 25. The upper connecting plate 24 and the lower connecting plate 25 are horizontally arranged in the vertical direction, and the bottom surface of the upper connecting plate 24 and the top surface of the lower connecting plate 25 are respectively recessed inward to form a groove, and multiple connecting holes 26 are formed at the edges. The upper and lower ends of the lead core 21 are respectively embedded in the grooves on the upper connecting plate 24 and the lower connecting plate 25. Multiple annular steel plates 23 are horizontally arranged at intervals, and the central hole is fixed on the outer circumference of the lead core 21. The rubber filler 22 covers the lead core 21 and all the annular steel plates 23 located between the upper connecting plate 24 and the lower connecting plate 25. The lower connecting plate 25 is fixed to the roof slab 1 by bolts 28 that pass through the connecting holes 26.

[0022] The butterfly spring device 3 includes multiple butterfly springs 31, a protective sleeve 32, a pressure cap 33, and a base 34. The base 34 is horizontally positioned, with an internal threaded hole in the center of its top surface and multiple connecting holes 26 on its edge. The base 34 is fixed to the upper connecting plate 24 by bolts 28 and nuts 27 that simultaneously pass through the corresponding connecting holes 26 on both the base 34 and the upper connecting plate 24. Each butterfly spring 31 includes an upper butterfly spring body 311, a lower butterfly spring body 312, a limiting rod 313, a strong spring 314, a pressure ring 315, a lower guide cylinder 316, a threaded groove 317, a threaded ring 318, and an upper guide cylinder 319. The threaded groove 317 and the threaded ring 318 are located along the upper... The lower guide cylinder 316 is horizontally positioned downwards; an internal thread is formed on the inner circumferential surface of the threaded groove 317; an external thread is formed on the lower part of the outer circumferential surface of the threaded ring 318; the upper butterfly spring body 311 and the lower butterfly spring body 312 are symmetrically arranged vertically, wherein the center hole of the upper butterfly spring body 311 is fixed on the outer circumferential surface of the threaded groove 317, and the center hole of the lower butterfly spring body 312 is fixed on the upper part of the outer circumferential surface of the threaded ring 318; a pressure ring 315 is provided at the edge of both the upper butterfly spring body 311 and the lower butterfly spring body 312, and adjacent pressure rings 315 are fitted together; the lower end of the lower guide cylinder 316 is fixed on the top surface of the threaded ring 318, and the upper edge extends horizontally outwards to form an outer... Along; the upper end of the upper guide cylinder 319 is fixed to the bottom surface of the threaded groove 317, and the lower edge extends horizontally inward to form an inner edge, which is fitted onto the upper outer side of the lower guide cylinder 316, and the inner edge is located below the outer edge of the lower guide cylinder 316. Therefore, the upper guide cylinder 319 and the lower guide cylinder 316 can move relative to each other, and the outer edge and inner edge are used for limiting; the two ends of the two limiting rods 313 are respectively connected to the upper part of the inner circumferential wall of the upper guide cylinder 319 and the lower part of the inner circumferential wall of the lower guide cylinder 316; the upper and lower ends of the strong spring 314 are respectively fixed to the middle of the two limiting rods 313; multiple disc springs 31 are stacked together, located on the upper side The threaded ring 318 on the butterfly spring 31 is threaded into the threaded groove 317 on the lower butterfly spring 31 or the internal threaded hole on the base 34; the pressure cover 33 is composed of a chassis and a force transmission rod; the chassis is horizontally set, and a convex ring is formed in the middle of the bottom surface, and an external thread is formed on the outer circumference of the convex ring to cooperate with the threaded groove 317 on the uppermost butterfly spring 31; the lower end of the force transmission rod is fixed to the middle of the top surface of the chassis, and the upper end is connected to the bottom surface of the landing gear plate 4; the protective sleeve 32 covers the outside of the multiple butterfly springs 31 and the pressure cover 33, and the lower end is fixed to the top surface of the base 34, and an opening is formed in the middle of the top surface for the force transmission rod to pass through the pressure cover 33.

[0023] The upper butterfly spring body 311 and the lower butterfly spring body 312 are connected to the pressure ring 315 by welding.

[0024] The annular steel plate 23 and the lead core 21 are connected by welding.

[0025] The pressure cap 33, protective sleeve 32, base 34, upper connecting plate 24 and lower connecting plate 25 are all made of steel; the upper butterfly spring body 311 and lower butterfly spring body 312 are made of aluminum-copper alloy.

[0026] The protective sleeve 32 is connected to the base 34 by welding.

[0027] The take-off and landing field plate 4 is connected to the force transmission rod on the pressure cover 33 by welding.

[0028] The vibration reduction principle of the three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support provided by this invention is described below:

[0029] When a vertical takeoff and landing (VTOL) aircraft lands on the landing pad 4, the resulting impact and vibration loads are transmitted to the disc spring 31 via the force transmission rod of the pressure plate 33 on the disc spring device 3. The disc spring 31 stores and dissipates some of the impact kinetic energy through elastic deformation and friction during the deformation process. After the peak of the impact and vibration has passed, the disc spring 31 releases the stored potential energy by relying on its own elastic restoring force to achieve buffering and vibration reduction functions. The impact and vibration loads are then transmitted to the lead-core rubber support 2 via the base 34 on the disc spring device 3. The soft rubber filler 22 on the lead-core rubber support 2 prolongs the vibration period of the structure, while the lead core 21 undergoes plastic deformation, thus providing strong damping for the vibration and impact, converting the impact kinetic energy into heat energy for dissipation. After the peak of the impact and vibration has passed, the elastic restoring force of the rubber filler 22 drives the lead-core rubber support 2 to return to or near its original position. The combined action of the disc spring device 3 and the lead-core rubber support 2 can achieve vibration isolation and reduction of the three-dimensional vibration isolation roof landing pad structure, effectively reducing the negative impact of impact loads and vibrations on the building.

Claims

1. A three-dimensional vibration isolation roof landing field structure based on a butterfly spring device and a lead-core rubber support, characterized in that: The three-dimensional vibration isolation roof landing field structure based on the butterfly spring device and the lead core rubber support includes a roof slab (1), a lead core rubber support (2), a butterfly spring device (3), and a landing field plate (4); wherein, the landing field plate (4) is horizontally set above the roof slab (1); the lower end of each butterfly spring device (3) is fixed to the upper end of a lead core rubber support (2) to form a damping component; multiple damping components are distributed between the landing field plate (4) and the roof slab (1), and the upper end of the butterfly spring device (3) and the lower end of the lead core rubber support (2) are fixed on the landing field plate (4) and the roof slab (1), respectively.

2. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support as described in claim 1, characterized in that: The lead-core rubber support (2) includes a lead core (21), a rubber filler (22), an annular steel plate (23), an upper connecting plate (24), and a lower connecting plate (25); wherein, the upper connecting plate (24) and the lower connecting plate (25) are horizontally arranged in the vertical direction, and the bottom surface of the upper connecting plate (24) and the top surface of the lower connecting plate (25) are respectively recessed inward to form a groove, and multiple connecting holes (26) are formed at the edges; the upper and lower ends of the lead core (21) are respectively Do not embed in the grooves on the upper connecting plate (24) and the lower connecting plate (25); multiple annular steel plates (23) are horizontally spaced apart, with the central hole fixed on the outer circumference of the lead core (21); rubber filler (22) covers the lead core (21) and all the annular steel plates (23) located between the upper connecting plate (24) and the lower connecting plate (25); the lower connecting plate (25) is fixed to the roof slab (1) by bolts (28) through the connecting hole (26).

3. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support as described in claim 1, characterized in that: The butterfly spring device (3) includes multiple butterfly springs (31), a protective sleeve (32), a pressure cap (33), and a base (34); wherein, the base (34) is horizontally arranged, with an internal threaded hole formed in the center of the top surface and multiple connecting holes (26) formed on the edge, and the base (34) is fixed to the upper connecting plate (24) by bolts (28) and nuts (27) that pass through the corresponding connecting holes (26) on the base (34) and the upper connecting plate (24); the butterfly spring (31) includes an upper butterfly spring body (311), a lower butterfly spring body (312), a limiting rod (313), a strong spring (314), a pressure ring (315), a lower guide cylinder (316), a threaded groove (317), and a threaded ring (318). The upper guide cylinder (319) and the upper guide cylinder (319); the threaded groove (317) and the threaded ring (318) are horizontally arranged in the vertical direction; an internal thread is formed on the inner circumferential surface of the threaded groove (317); an external thread is formed on the lower part of the outer circumferential surface of the threaded ring (318); the upper butterfly spring body (311) and the lower butterfly spring body (312) are symmetrically arranged vertically, wherein the center hole of the upper butterfly spring body (311) is fixed on the outer circumferential surface of the threaded groove (317), and the center hole of the lower butterfly spring body (312) is fixed on the upper part of the outer circumferential surface of the threaded ring (318); a pressure ring (315) is provided at the edge of the upper butterfly spring body (311) and the lower butterfly spring body (312), and adjacent pressure rings (315) are fitted together; the lower guide cylinder (319) and the upper guide cylinder (319) are horizontally arranged in the vertical direction; an internal thread is formed on the inner circumferential surface of the threaded groove (317); an external thread is formed on the lower circumferential surface of the threaded ring (318); the upper butterfly spring body (311) and the lower butterfly spring body (312) are symmetrically arranged vertically, wherein the center hole of the upper butterfly spring body (311) is fixed on the outer circumferential surface of the threaded groove (317), and the center hole of the lower butterfly spring body (312) is fixed on the upper part of the outer circumferential surface of the threaded ring (318); a pressure ring (315) is provided at the edge of the upper butterfly spring body (311) and the lower butterfly spring body (312), and adjacent pressure rings (315) are fitted together; the lower guide cylinder (319) and the lower guide cylinder (319) are horizontally arranged in the vertical direction; 6) The lower end is fixed to the top surface of the threaded ring (318), and the upper edge extends horizontally outward to form an outer edge; the upper end of the upper guide cylinder (319) is fixed to the bottom surface of the threaded groove (317), and the lower edge extends horizontally inward to form an inner edge. The lower part is fitted on the upper outer side of the lower guide cylinder (316), and the inner edge is located below the outer edge of the lower guide cylinder (316); the two ends of the two limiting rods (313) are respectively connected to the upper part of the inner circumferential wall of the upper guide cylinder (319) and the lower part of the inner circumferential wall of the lower guide cylinder (316); the upper and lower ends of the strong spring (314) are respectively fixed to the middle of the two limiting rods (313); multiple butterfly springs (31) are stacked together, and the upper butterfly spring (31) is located on the upper side. The threaded ring (318) is threaded into the threaded groove (317) on the lower butterfly spring (31) or into the internal threaded hole on the base (34); the pressure cap (33) is composed of a chassis and a force transmission rod; the chassis is horizontally set, with a convex ring protruding downward in the middle of the bottom surface, and an external thread is formed on the outer circumference of the convex ring that matches the threaded groove (317) on the uppermost butterfly spring (31); the lower end of the force transmission rod is fixed to the middle of the top surface of the chassis, and the upper end is connected to the bottom surface of the landing gear plate (4); the protective sleeve (32) covers the outside of the multiple butterfly springs (31) and the pressure cap (33), with the lower end fixed to the top surface of the base (34), and an opening is formed in the middle of the top surface for the force transmission rod to pass through the pressure cap (33).

4. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support as described in claim 1, characterized in that: The upper butterfly spring body (311) and the lower butterfly spring body (312) are connected to the pressure ring (315) by welding.

5. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support according to claim 1, characterized in that: The annular steel plate (23) and the lead core (21) are connected by welding.

6. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support according to claim 1, characterized in that: The pressure cap (33), protective sleeve (32), base (34), upper connecting plate (24) and lower connecting plate (25) are all made of steel; the upper butterfly spring body (311) and lower butterfly spring body (312) are made of aluminum-copper alloy.

7. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support as described in claim 1, characterized in that: The protective sleeve (32) and the base (34) are connected by welding.

8. The three-dimensional vibration isolation roof landing field structure based on a disc spring device and a lead-core rubber support according to claim 1, characterized in that: The take-off and landing plate (4) is connected to the force transmission rod on the pressure cover (33) by welding.

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