Gearbox support device with load bearing and damping performance and method for producing same

Abstract

The application discloses a gear box supporting device with bearing and damping performance and a preparation method thereof, and relates to a gear box supporting device and a preparation method thereof. In order to solve the problem that the existing metal rubber component cannot control the vibration isolation frequency band due to poor low-frequency vibration damping effect, the application comprises a damping unit, an inner shell (3), an outer shell (5) and a plurality of rib plates (4), the outer shell (5) is sleeved on the inner shell (3), the inner shell (3) and the outer shell (5) are fixedly connected through the plurality of rib plates (4), and the damping unit is arranged between every two adjacent rib plates (4). Step one: according to requirements, the structure size is calculated, and the inner shell (3) and the rib plate (4) are welded; step two: the local resonance unit is bonded between every two rib plates (4) in a ring direction; and step three: the outer shell (5) and the rib plate (4) are welded, and thus the preparation of the gear box supporting device is completed. The application is used for supporting a gear box.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of gear box support device and its preparation method, specifically to a kind of gear box support device and its preparation method with bearing and damping performance. BACKGROUND

[0002] Traditional support device mainly relies on the damping performance of metal rubber itself. Metal rubber component has the inherent characteristics of selected metal and the elasticity similar to rubber, and can be used in compression state and shear state, because it has high enough internal damping, it is suitable for small static displacement and large dynamic displacement although short, and can be made into various shapes to meet the space requirements. However, the main target of metal rubber component is high frequency vibration, and the effect is not good for specific low frequency vibration, and the vibration isolation frequency band cannot be controlled.

[0003] In summary, the existing metal rubber component has the problem of poor low-frequency vibration resistance and cannot control the vibration isolation frequency band. SUMMARY

[0004] The purpose of the present application is to solve the problem of poor low-frequency vibration resistance and inability to control the vibration isolation frequency band of the existing metal rubber component. Further, a kind of gear box support device and its preparation method with bearing and damping performance are provided.

[0005] The technical scheme of the present application is: a kind of gear box support device with bearing and damping performance includes damping unit, inner shell, outer shell and multiple rib plates, the outer shell is sleeved on the inner shell, and the inner shell and the outer shell are fixedly connected by multiple rib plates, and damping unit is installed between adjacent two rib plates.

[0006] Further, the inner shell and the outer shell are both cylindrical shells.

[0007] Further, the rib plate is a long strip-shaped plate body.

[0008] Further, the rib plate is fixedly connected with the inner shell and the outer shell by welding.

[0009] Further, the damping unit includes multiple local resonance units, and the multiple local resonance units are fixedly connected along the outer circumferential side wall of the inner shell in length direction.

[0010] Further, each local resonance unit includes a mass block and a rubber block, and the mass block is installed on the upper surface of the rubber block.

[0011] Further, the lower surface of the rubber block is provided with an inner concave arc.

[0012] Further, the left and right sides of the rubber block are inclined inward.

[0013] Further, the mass and the rubber block are cemented.

[0014] The application also provides a method for preparing the gear box supporting device with the bearing and damping performance, which comprises the following steps:

[0015] Step one: according to the requirement, the structure size is calculated, the inner shell is welded with the rib plate;

[0016] Step two: the local resonance unit is bonded between every two rib plates along the ring direction;

[0017] Step three: the outer shell is welded with the rib plate, thus the preparation of the gear box supporting device is completed.

[0018] Compared with the prior art, the application has the following effects:

[0019] 1. The local resonance principle of the application is to rely on the resonance of the internal local resonance unit, but when the natural frequency of the local resonance unit is the same as or close to the external load, the resonance of the local resonance unit is caused, so that the damping effect can be achieved, and the natural frequency of the local resonance unit can be controlled.

[0020] 2. The application is based on the design idea of the local resonance type phononic crystal, and the rubber and steel are used to form the local resonance unit, which is periodically distributed in the inside of the supporting ring along the axial and ring directions of the supporting device. When the excitation frequency of the external load is the same as or close to the resonance frequency of the local resonance unit, the energy is consumed through the resonance of the local resonance unit, so that the energy of the external load is consumed on the local resonance unit, and the damping purpose is achieved.

[0021] 3. The application cuts off the elastic wave of a specific frequency through the resonance of the internal local resonance unit, and the main structure is connected by the inner and outer steel shells and the internal rib plate, so that the structure has sufficient bearing capacity. DETAILED DESCRIPTION

[0022] Figure 1 is a schematic diagram of the gear box supporting device with the bearing and damping performance, in which, 1 is a mass, 2 is rubber, 3 is an inner shell, 4 is a rib plate, and 5 is an outer shell.

[0023] Figure 2 is a schematic diagram of the gear box supporting device with the bearing and damping performance.

[0024] Figure 3 is a plan view of the gear box supporting device with the bearing and damping performance.

[0025] Figure 4 is a schematic diagram of the local resonance unit of the gear box supporting device with the bearing and damping performance.

[0026] Figure 5 is a schematic diagram of the internal frame of the gear box support device with load bearing and damping performance according to the present application.

[0027] Figure 6 is a schematic diagram of the overall frame of the gear box support device with load bearing and damping performance according to the present application. DETAILED DESCRIPTION

[0028] Embodiment I: in combination with Figures 1 to 6 In this embodiment, the gear box support device with load bearing and damping performance comprises a damping unit, an inner shell 3, an outer shell 5, and a plurality of rib plates 4. The outer shell 5 is sleeved on the inner shell 3, and the inner shell 3 and the outer shell 5 are fixedly connected through the plurality of rib plates 4. The damping unit is installed between any two adjacent rib plates 4.

[0029] In this embodiment, the inner and outer steel shells are connected through the intermediate rib plates 4, thereby meeting the load bearing performance.

[0030] The local resonance units in this embodiment are periodically distributed along the axial and circumferential directions, and the effect of local resonance can be superimposed.

[0031] As a preferred mode, the size of the local resonance unit can be changed according to the requirements through calculation.

[0032] The local resonance unit in this embodiment is not connected to the outer steel shell, and the load bearing performance of the local resonance unit does not need to be considered.

[0033] Embodiment II: in combination with Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 In this embodiment, the inner shell 3 and the outer shell 5 are both cylindrical shells. In this way, the structural strength is high. The other components and connection relationships are the same as those in Embodiment I.

[0034] Embodiment III: in combination with Figure 2 and Figure 5 In this embodiment, the rib plate 4 is a long strip-shaped plate body. In this way, the rib plate 4 can play a supporting role and can be connected to the inner shell and the outer shell. The other components and connection relationships are the same as those in Embodiment I or II.

[0035] Embodiment IV: in combination with Figure 2 and Figure 5 In this embodiment, the rib plate 4 is fixedly connected to the inner shell 3 and the outer shell 5 through welding. In this way, the structure can be ensured to have sufficient load bearing capacity. The other components and connection relationships are the same as those in Embodiment I, II, or III.

[0036] Specific implementation five: combination Figures 1 to 3 The present embodiment is described, the damping unit of the present embodiment includes a plurality of local resonance units, a plurality of local resonance units are fixedly connected along the outer circumferential side wall of the length direction of the inner shell 3. So set, it is convenient to play the role of damping. The other components and connection relationship is same with the specific implementation one, two, three or four.

[0037] Specific implementation six: combination Figures 1 to 3 The present embodiment is described, each local resonance unit of the present embodiment includes a mass block 1 and a rubber block 2, the mass block 1 is installed on the upper surface of the rubber block 2. So set, the damping unit of the present embodiment is composed of a plurality of units with local resonance characteristics and the same structure, which is composed of rubber and mass block. The damping effect is good. The other components and connection relationship is same with the specific implementation one, two, three, four or five.

[0038] Specific implementation seven: combination Figure 4 The present embodiment is described, the lower surface of the rubber block 2 of the present embodiment is provided with an inner concave arc 2-1. So set, it is convenient to connect with the inner shell. The other components and connection relationship is same with the specific implementation one, two, three, four, five or six.

[0039] Specific implementation eight: combination Figures 1 to 3 The present embodiment is described, the left and right sides of the rubber block 2 of the present embodiment are inclined inward. So set, it is convenient to connect with the contact surface of the adjacent two rib plates. The other components and connection relationship is same with the specific implementation one, two, three, four, five, six or seven.

[0040] Specific implementation nine: combination Figure 4 The present embodiment is described, the mass block 1 and the rubber block 2 of the present embodiment are cemented. So set, the connection mode is simple and firm. The other components and connection relationship is same with any one of the specific implementation one to eight.

[0041] Specific implementation ten: combination Figures 1 to 6 The present embodiment is described, the present embodiment includes the following steps:

[0042] Step one: according to the demand, calculate the structure size, weld the inner shell 3 with the rib plate 4;

[0043] Step two: the local resonance unit is bonded between every two rib plates 4 in the ring direction;

[0044] Step three: the outer shell 5 is welded with the rib plate 4, thus, the preparation of the gear box supporting device is completed.

[0045] Combination Figures 1 to 6 The working principle of the present application is described:

[0046] See Figure 1 A gearbox support device that combines load-bearing and vibration damping performance is composed of Figure 6 The overall framework and periodic arrangement shown Figure 4 The local resonant unit shown is composed of [a specific unit]. Therefore, the fabrication method of a vibration damping device with low-frequency bandgap characteristics of a phononic crystal is as follows:

[0047] a. Calculate the structural dimensions according to requirements, and weld the internal steel shell to the ribs, such as... Figure 5 As shown.

[0048] b. Ring upwards Figure 4 The local resonant elements shown are bonded between every two ribs, with axial bonding performed according to calculations. Figure 2 As shown.

[0049] c. Weld the outer steel shell to the ribs, such as... Figure 1 As shown.

[0050] The aforementioned material combinations are for reference only. You can choose appropriate materials to combine according to your needs.

[0051] This invention is based on the design concept of locally resonant phononic crystals. It utilizes rubber and steel to form locally resonant units, periodically distributed along the axial and circumferential directions inside the support ring. When the excitation frequency of the external load is the same as or close to the resonant frequency of the locally resonant units, the energy is dissipated through the resonance of these units, thus achieving vibration reduction. This invention isolates elastic waves of specific frequencies through the resonance of the internal locally resonant units, and the main structure, consisting of inner and outer steel shells connected by internal ribs, ensures sufficient load-bearing capacity.

[0052] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make other changes within the spirit of the invention and apply it to fields not mentioned in the invention. Of course, all such changes made in accordance with the spirit of the invention should be included within the scope of protection claimed by the invention.

Claims

1. A gearbox support device that combines load-bearing and vibration damping performance, characterized in that: It includes a vibration damping unit, an inner shell (3), an outer shell (5) and multiple ribs (4). The outer shell (5) is fitted onto the inner shell (3), and the inner shell (3) and the outer shell (5) are fixedly connected by multiple ribs (4). A vibration damping unit is installed between two adjacent ribs (4). The vibration damping unit includes multiple local resonance units, which are fixedly connected along the outer circumferential sidewall of the inner shell (3) along its length. Each local resonance unit includes a mass block (1) and a rubber block (2). The mass block (1) is mounted on the upper surface of the rubber block (2). The lower surface of the rubber block (2) is provided with an inward concave arc (2-1). The left and right sides of the rubber block (2) are inclined inward. The mass block (1) and the rubber block (2) are bonded together.

2. The gearbox support device with both load-bearing and vibration-damping properties according to claim 1, characterized in that: Both the inner shell (3) and the outer shell (5) are cylindrical shells.

3. A gearbox support device with both load-bearing and vibration-damping properties according to claim 2, characterized in that: Rib (4) is a long strip plate.

4. A gearbox support device with both load-bearing and vibration-damping properties according to claim 3, characterized in that: The rib (4) is fixedly connected to the inner shell (3) and the outer shell (5) by welding.

5. A method for preparing a gearbox support device with both load-bearing and vibration-damping properties as described in any one of claims 1 to 4, characterized in that: It includes the following steps: Step 1: Calculate the structural dimensions according to the requirements, and weld the inner shell (3) to the rib plate (4); Step 2: Bond the local resonant units between every two ribs (4) in the circumferential direction; Step 3: Weld the outer shell (5) to the rib plate (4). This completes the preparation of the gearbox support device.

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