Vibration isolation device with wide vibration isolation frequency range and air conditioning unit

Abstract

The present invention provides a vibration isolation device and an air-conditioning unit with a wide vibration isolation frequency range. The vibration isolation device includes a chassis, a support plate, a first vibration isolation structure and a second vibration isolation structure, wherein the first vibration isolation structure and the second vibration isolation structure are both arranged between the chassis and the support plate, and the structure to be isolated is arranged on the side of the support plate away from the chassis, and the vibration of the structure to be isolated is transmitted to the first vibration isolation structure and the second vibration isolation structure through the support plate. The vibration isolation device and the air-conditioning unit with a wide vibration isolation frequency range provided by the present invention can meet the vibration isolation requirements regardless of whether low-frequency vibration or high-frequency vibration is generated in the structure to be isolated. At the same time, the twisted spring sheet can convert the axial vibration into a torsional driving force to achieve efficient collision friction of particle damping, ensure the low-frequency vibration absorption and energy dissipation effect, and utilize the rigidity, flexibility and deformability of the wire rope to achieve the high-frequency vibration absorption and isolation effect.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbing mechanisms, in particular to a vibration isolation device with a wide vibration isolation frequency range and an air conditioning unit. Background Art

[0002] Existing vibration isolators usually use steel lining and surface rubber vulcanization. This solution uses steel lining as a high-rigidity support and rubber as an energy-consuming and regulating material, which has high load-bearing and cost advantages; however, it consumes less energy at high frequencies, is not easy to isolate low frequencies, and easily causes system vibration energy frequency shift, resulting in a slight amplification of low-frequency vibrations. Under the current increasingly complex vibration environment conditions, various types of vibration source units are gradually developing in the direction of variable frequency operation, high power and high energy efficiency, low noise vibration and environmental protection. Therefore, the existing traditional vibration isolators under constant working conditions are difficult to meet complex vibration environment conditions. Summary of the invention

[0003] In order to solve the technical problem that the existing vibration isolators cannot simultaneously meet the low-frequency and high-frequency vibration environment conditions, a vibration isolation device and an air conditioning unit with a wide vibration isolation frequency range that simultaneously meet the low-frequency and high-frequency vibration requirements are provided.

[0004] A vibration isolation device comprises a chassis, a support plate, a first vibration isolation structure and a second vibration isolation structure, wherein the first vibration isolation structure and the second vibration isolation structure are both arranged between the chassis and the support plate, a structure to be isolated is arranged on a side of the support plate away from the chassis, and vibration of the structure to be isolated is transmitted to the first vibration isolation structure and the second vibration isolation structure through the support plate, and the corresponding frequencies of the first vibration isolation structure and the second vibration isolation structure are different.

[0005] The first vibration isolation structure comprises a particle damper, one end of the particle damper is arranged on the chassis, and the other end of the particle damper is arranged on the support plate.

[0006] The particle damper includes metal particles and a stirring mechanism. A receiving groove is formed on the chassis. The metal particles are arranged in the receiving groove. The upper end of the stirring mechanism is arranged on the support plate, and the lower end extends into the receiving groove and can stir the metal particles.

[0007] The stirring mechanism includes a pull rod and a stirring rod, one end of the pull rod is arranged on the support plate, and the other end is arranged at the bottom of the receiving tank, the pull rod has a static state and a rotating state rotating along its own axis under the extrusion of the support plate or the structure to be isolated from vibration, the stirring rod is arranged on the pull rod, and when the pull rod switches between the static state and the rotating state, the stirring rod can stir the metal particles in the receiving tank.

[0008] The number of the stirring rods is four, and the angle formed by two adjacent stirring rods at the axis of the pull rod is 60-120°.

[0009] The stirring mechanism also includes a torsion elastic mechanism, which is arranged on the support plate or the chassis, and the pull rod is arranged on the torsion elastic mechanism. The torsion elastic mechanism can drive the pull rod to switch between the static state and the rotating state under the extrusion of the support plate or the structure to be isolated.

[0010] The torsion elastic mechanism comprises a torsion spring sheet, the torsion spring sheet is arranged on the support plate or the chassis, the pull rod is arranged on the torsion spring sheet, and the torsion spring sheet generates torsion deformation when being squeezed by the support plate or the structure to be isolated from vibration.

[0011] The twisted spring sheet is provided with a middle mounting hole, an edge mounting hole and a deformation hole, the pull rod is provided at the middle mounting hole, the edge mounting hole is provided on the peripheral side of the middle mounting hole, and the twisted spring sheet is fixedly provided on the support plate or the chassis through the edge mounting hole, and the deformation hole is provided between the middle mounting hole and the edge mounting hole.

[0012] The stirring mechanism also includes a support box cover, which is arranged at the opening of the receiving groove. The end of the pull rod away from the support plate passes through the support box cover and then extends into the receiving groove. The torsion elastic mechanism is fixedly arranged on the side of the support box cover facing the support plate.

[0013] The cross-sections of the support box cover and the receiving groove are both circular, and the outer peripheral side of the support box cover is threadedly matched with the inner surface of the receiving groove.

[0014] A protrusion is arranged on the side of the support box cover facing the support plate, and the torsion elastic mechanism is fixedly arranged on the protrusion.

[0015] The second vibration isolation structure includes a steel wire rope, which is in a horizontally placed continuous S-shape, and the crest of the continuous S-shape is fixed to the support plate, and the trough of the continuous S-shape is fixed to the chassis.

[0016] The chassis is circular, and the fixing point of the steel wire rope on the chassis forms a first circle with the center of the circle of the chassis as the center.

[0017] The support plate is circular, and the fixing point of the steel wire rope on the support plate forms a second circle with the center of the circle of the chassis as the center.

[0018] The diameter of the first circle is greater than the diameter of the second circle.

[0019] The vibration isolation device also includes a buckle, and the steel wire rope is fixedly arranged on the chassis and the support plate through the buckle.

[0020] The cross section of the buckle is U-shaped, and holes engaging with the ends of the U-shape are provided on the chassis and the support plate, and the ends of the U-shape are inserted into the corresponding holes.

[0021] The second vibration isolation structure is arranged on a peripheral side of the first vibration isolation structure.

[0022] An air conditioning unit comprises the above-mentioned vibration isolation device.

[0023] The vibration isolation device and air-conditioning unit with a wide vibration isolation frequency range provided by the present invention utilize the first vibration isolation structure and the second vibration isolation structure to simultaneously receive the vibration generated by the structure to be isolated through the support plate, so that the vibration isolation requirements can be met regardless of whether the structure to be isolated generates low-frequency vibration or high-frequency vibration. At the same time, the twisted spring sheet can convert the axial vibration into a torsional driving force to achieve efficient collision friction of particle damping, thereby ensuring the low-frequency vibration absorption and energy dissipation effect. The steel wire rope is arranged in a continuous S-shape placed horizontally, and the rigidity, flexibility and deformability of the steel wire rope are utilized to achieve high-frequency vibration absorption and isolation effects, thereby increasing the vibration isolation range of the vibration isolation device and improving the vibration isolation effect. Secondly, when a single vibration isolation structure is damaged, the other vibration isolation structure can meet the vibration isolation requirements, avoiding the problem of collapse and failure of the vibration isolation structure. Finally, the metal particle damping and steel wire rope are utilized to effectively meet the stable operation in various harsh environments such as high temperature, high humidity, high salt fog or high dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a vibration isolation device with a wide vibration isolation frequency range and an embodiment of a vibration isolation device of an air conditioning unit provided by the present invention;

[0025] Figure 2 An exploded view of a vibration isolation device with a wide vibration isolation frequency range and an embodiment of an air conditioning unit provided by the present invention;

[0026] Figure 3 A schematic diagram of the structure of a steel wire rope of an embodiment of a vibration isolation device with a wide vibration isolation frequency range and an air conditioning unit provided by the present invention;

[0027] Figure 4 A schematic structural diagram of a stirring mechanism of an embodiment of a vibration isolation device with a wide vibration isolation frequency range and an air conditioning unit provided by the present invention;

[0028] In the figure:

[0029] 1. chassis; 2. support plate; 3. first vibration isolation structure; 4. second vibration isolation structure; 31. metal particles; 11. receiving groove; 32. pull rod; 33. stirring rod; 34. twisted spring sheet; 35. support box cover; 41. wire rope; 42. buckle. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] like Figures 1 to 4 The vibration isolation device shown includes a chassis 1, a support plate 2, a first vibration isolation structure 3 and a second vibration isolation structure 4, wherein the first vibration isolation structure 3 and the second vibration isolation structure 4 are both arranged between the chassis 1 and the support plate 2, the structure to be isolated is arranged on the side of the support plate 2 away from the chassis 1, and the vibration of the structure to be isolated is transmitted to the first vibration isolation structure 3 and the second vibration isolation structure 4 through the support plate 2, the corresponding frequencies of the first vibration isolation structure 3 and the second vibration isolation structure 4 are different, and the corresponding frequency of the second vibration isolation structure 4 is higher than that of the first vibration isolation structure 3, and the first vibration isolation structure 3 and the second vibration isolation structure 4 are simultaneously received through the support plate 2 by the vibration generated by the structure to be isolated, so that the vibration isolation requirements can be met regardless of whether low-frequency vibration or high-frequency vibration is generated in the structure to be isolated, thereby overcoming the technical problem of a single vibration isolation frequency in the prior art, and at the same time, under certain severe conditions, when any one of the structures of the first vibration isolation structure 3 and the second vibration isolation structure 4 is damaged, the other structure will serve as the main bearing structure, which is used to ensure the stable installation and operation of the equipment above the vibration isolation device under emergency conditions, thereby significantly improving the reliability of the equipment.

[0032] The first vibration isolation structure 3 includes a particle damper, one end of which is arranged on the chassis 1, and the other end of which is arranged on the support plate 2, and the particle damper is used to achieve the vibration absorption and energy dissipation effect of low-frequency vibration.

[0033] The particle damper includes metal particles 31 and a stirring mechanism. A receiving groove 11 is formed on the chassis 1. The metal particles 31 are arranged in the receiving groove 11. The upper end of the stirring mechanism is arranged on the support plate 2, and the lower end extends into the receiving groove 11 and can stir the metal particles 31. When receiving vibration, the stirring mechanism transmits the vibration to the metal particles 31 and stirs the metal particles 31, so that friction is generated between the metal particles 31, thereby achieving the purpose of vibration absorption and energy consumption.

[0034] The stirring mechanism includes a pull rod 32 and a stirring rod 33, one end of the pull rod 32 is arranged on the support plate 2, and the other end is arranged at the bottom of the receiving tank 11, the pull rod 32 has a static state and a rotating state rotating along its own axis under the extrusion of the support plate 2 or the structure to be isolated, the stirring rod 33 is arranged on the pull rod 32, and when the pull rod 32 switches between the static state and the rotating state, the stirring rod 33 can stir the metal particles 31 in the receiving tank 11, the pull rod 32 receives the vibration generated by the structure to be isolated, and converts the axial vibration into the circumferential rotation of the pull rod 32 through its own rotation, so that the pull rod 32 is used to drive the stirring rod 33 to rotate in the receiving tank 11, thereby realizing damped stirring of the metal particles 31.

[0035] The number of the stirring rods 33 is four, and the angle formed by two adjacent stirring rods 33 at the axis of the pull rod 32 is 60-120°. In a limited way, the angle formed by two adjacent stirring rods 33 is 90°.

[0036] The stirring mechanism also includes a torsion elastic mechanism, which is arranged on the support plate 2 or the chassis 1, and the pull rod 32 is arranged on the torsion elastic mechanism, and the torsion elastic mechanism can drive the pull rod 32 to switch between the static state and the rotation state under the extrusion of the support plate 2 or the structure to be isolated from vibration, that is, the torsion elastic mechanism can use its own deformation to drive the pull rod 32 to rotate, and when the structure to be isolated from vibration does not generate vibration, its own deformation is reset, thereby driving the pull rod 32 to return to the static state.

[0037] The torsion elastic mechanism includes a torsion spring sheet 34, which is arranged on the support plate 2 or the chassis 1, and the pull rod 32 is arranged on the torsion spring sheet 34. The torsion spring sheet 34 generates torsion deformation when the support plate 2 or the structure to be isolated is squeezed.

[0038] The torsion spring sheet 34 is provided with a middle mounting hole, an edge mounting hole and a deformation hole, the pull rod 32 is arranged at the middle mounting hole, the edge mounting hole is arranged on the peripheral side of the middle mounting hole, and the torsion spring sheet 34 is fixedly arranged on the support plate 2 or the chassis 1 through the edge mounting hole, and the deformation hole is arranged between the middle mounting hole and the edge mounting hole, that is, the torsion spring sheet 34 is fixed through the edge mounting hole to ensure the reliable fixation of the torsion spring sheet, and at the same time, the deformation hole can ensure that the torsion spring sheet 34 can produce its own deformation, and use the middle mounting hole to transfer its own deformation to the pull rod 32 to ensure that the pull rod 32 can rotate reliably.

[0039] The stirring mechanism also includes a support box cover 35, and the support box cover 35 is arranged at the opening of the receiving groove 11. The end of the pull rod 32 away from the support plate 2 passes through the support box cover 35 and then extends into the receiving groove 11. The torsion elastic mechanism is fixedly arranged on the side of the support box cover 35 facing the support plate 2. The support box cover 35 seals the opening of the receiving groove 11 to ensure that the metal particle 31 damping will not escape from the receiving groove 11 during the stirring process, thereby ensuring the vibration absorption effect of the metal particle 31 damping. At the same time, the support box cover 35 is used to fix the torsion spring sheet 34 on the chassis 1 to complete the reliable fixation of the torsion spring sheet 34.

[0040] The cross-sections of the support box cover 35 and the receiving groove 11 are both circular, and the outer peripheral side of the support box cover 35 is threadedly matched with the inner surface of the receiving groove 11 .

[0041] A protrusion is provided on the side of the support box cover 35 facing the support plate 2 , and the torsion elastic mechanism is fixedly provided on the protrusion.

[0042] The second vibration isolation structure 4 includes a steel wire rope 41, which is in a horizontally placed continuous S-shape, and the crest of the continuous S-shape is fixed to the support plate 2, and the trough of the continuous S-shape is fixed to the chassis 1. The rigidity, flexibility and deformability of the steel wire rope 41 are used to isolate high-frequency vibrations. Other materials with the same rigidity, flexibility and deformability as the steel wire rope 41 can be selected as a substitute as needed. The S-shaped structure can realize deformation by utilizing the compression deformation of the arc, thereby achieving the effect of vibration absorption and isolation.

[0043] The chassis 1 is circular, and the fixing points of the steel wire rope 41 on the chassis 1 form a first circle with the center of the circle of the chassis 1 as the center.

[0044] The support plate 2 is circular, and the fixing point of the steel wire rope 41 on the support plate 2 forms a second circle with the center of the circle of the chassis 1 as the center.

[0045] The diameter of the first circle is greater than the diameter of the second circle, thereby ensuring that the steel wire rope 41 not only deforms in the vertical direction but also deforms in the circumferential direction, thereby increasing the vibration absorption range of the second vibration isolation structure 4 .

[0046] The vibration isolation device further comprises a buckle 42 , through which the steel wire rope 41 is fixedly arranged on the chassis 1 and the support plate 2 . The buckle 42 half covers the steel wire rope 41 , and its end is snap-fitted with the chassis 1 or the support plate 2 .

[0047] The cross section of the buckle 42 is U-shaped, and holes engaging with the ends of the U-shape are provided on the chassis 1 and the support plate 2 , and the ends of the U-shape are inserted into the corresponding holes.

[0048] The second vibration isolation structure 4 is disposed on the peripheral side of the first vibration isolation structure 3 .

[0049] During use, it is installed with external equipment through its chassis 1 and mounting plate. Due to the metal particle 31 damping and tapered wire rope 41 structural arrangement, it is suitable for axial vibration isolation and vibration reduction, and the horizontal torsion deformation angle is very small, and it is not easy to twist.

[0050] When under the action of external vibration, the support plate 2 transmits the vibration load through the steel wire rope 41 and the metal particle damper 31 respectively. The steel wire rope 41 has a better high-frequency vibration isolation effect, while the low-frequency vibration has a higher amplitude, and its vibration energy will be dissipated under the action of particle damping, thereby achieving a vibration reduction effect from low frequency to high frequency.

[0051] An air conditioning unit comprises the above-mentioned vibration isolation device.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vibration isolation device, characterized in that: The invention comprises a chassis (1), a support plate (2), a first vibration isolation structure (3) and a second vibration isolation structure (4), wherein the first vibration isolation structure (3) and the second vibration isolation structure (4) are both arranged between the chassis (1) and the support plate (2), the structure to be isolated is arranged on a side of the support plate (2) away from the chassis (1), and the vibration of the structure to be isolated is transmitted to the first vibration isolation structure (3) and the second vibration isolation structure (4) through the support plate (2), and the corresponding frequencies of the first vibration isolation structure (3) and the second vibration isolation structure (4) are different; The first vibration isolation structure (3) comprises a particle damper, one end of the particle damper is arranged on the chassis (1), and the other end of the particle damper is arranged on the support plate (2); The particle damper comprises metal particles (31) and a stirring mechanism, a receiving groove (11) is formed on the chassis (1), the metal particles (31) are arranged in the receiving groove (11), and the upper end of the stirring mechanism is arranged on the support plate (2), and the lower end extends into the receiving groove (11) and is capable of stirring the metal particles (31); The stirring mechanism comprises a pull rod (32) and a stirring rod (33); one end of the pull rod (32) is arranged on the support plate (2), and the other end is arranged at the bottom of the containing groove (11); the pull rod (32) has a stationary state and a rotating state in which it rotates along its own axis under the pressure of the support plate (2) or the structure to be isolated from vibration; the stirring rod (33) is arranged on the pull rod (32), and when the pull rod (32) switches between the stationary state and the rotating state, the stirring rod (33) can stir the metal particles (31) in the containing groove (11); The stirring mechanism further comprises a torsion elastic mechanism, the torsion elastic mechanism being arranged on the support plate (2) or the chassis (1), the pull rod (32) being arranged on the torsion elastic mechanism, and the torsion elastic mechanism being able to drive the pull rod (32) to switch between the static state and the rotational state under the pressure of the support plate (2) or the structure to be isolated from vibration; The torsional elastic mechanism comprises a torsional spring sheet (34), the torsional spring sheet (34) being arranged on the support plate (2) or the chassis (1), the pull rod (32) being arranged on the torsional spring sheet (34), and the torsional spring sheet (34) generating torsional deformation when being squeezed by the support plate (2) or the structure to be isolated from vibration.

2. The vibration isolation device according to claim 1, characterized in that: The number of the stirring rods (33) is four, and the angle formed by two adjacent stirring rods (33) at the axis of the pull rod (32) is 60-120°.

3. The vibration isolation device according to claim 1, characterized in that: The twisted spring sheet (34) is provided with a middle mounting hole, an edge mounting hole and a deformation hole, the pull rod (32) is arranged at the middle mounting hole, the edge mounting hole is arranged on the peripheral side of the middle mounting hole, and the twisted spring sheet (34) is fixedly arranged on the support plate (2) or the chassis (1) through the edge mounting hole, and the deformation hole is arranged between the middle mounting hole and the edge mounting hole.

4. The vibration isolation device according to claim 1, characterized in that: The stirring mechanism further comprises a support box cover (35), wherein the support box cover (35) is arranged at the opening of the receiving groove (11), and an end of the pull rod (32) away from the support plate (2) passes through the support box cover (35) and then extends into the receiving groove (11), and the torsion elastic mechanism is fixedly arranged on the side of the support box cover (35) facing the support plate (2).

5. The vibration isolation device according to claim 4, characterized in that: The cross-sections of the support box cover (35) and the cross-sections of the receiving groove (11) are both circular, and the outer peripheral side of the support box cover (35) is threadedly matched with the inner surface of the receiving groove (11).

6. The vibration isolation device according to claim 5, characterized in that: A protrusion is provided on the side of the support box cover (35) facing the support plate (2), and the twisting elastic mechanism is fixedly arranged on the protrusion.

7. The vibration isolation device according to claim 1, characterized in that: The second vibration isolation structure (4) comprises a steel wire rope (41), the steel wire rope (41) being in a horizontally placed continuous S-shape, the crest of the continuous S-shape being fixedly arranged on the support plate (2), and the trough of the continuous S-shape being fixedly arranged on the chassis (1).

8. The vibration isolation device according to claim 7, characterized in that: The chassis (1) is circular, and the fixing point of the steel wire rope (41) on the chassis (1) forms a first circle with the center of the circle of the chassis (1) as the center.

9. The vibration isolation device according to claim 8, characterized in that: The support plate (2) is circular, and the fixing point of the steel wire rope (41) on the support plate (2) forms a second circle with the center of the circle of the chassis (1) as the center.

10. The vibration isolation device according to claim 9, characterized in that: The diameter of the first circle is greater than the diameter of the second circle.

11. The vibration isolation device according to claim 7, characterized in that: The vibration isolation device further comprises a buckle (42), and the steel wire rope (41) is fixedly arranged on the chassis (1) and the support plate (2) via the buckle (42).

12. The vibration isolation device according to claim 11, characterized in that: The cross section of the buckle (42) is U-shaped, and a clamping hole engaging with the end of the U-shape is provided on the chassis (1) and the support plate (2), and the end of the U-shape is clamped into the corresponding clamping hole.

13. The vibration isolation device according to claim 1, characterized in that: The second vibration isolation structure (4) is arranged on the peripheral side of the first vibration isolation structure (3).

14. An air conditioning unit, characterized in that: A vibration isolation device comprising the vibration isolation device according to any one of claims 1 to 13.

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