Damping device

Abstract

The invention discloses a damping device, which belongs to the technical field of ships and comprises a bottom plate, a hollow shell is fixedly mounted on the top surface of the bottom plate, a limiting guide sleeve communicated with an inner cavity of the shell is fixedly mounted at the top of the shell, a supporting column capable of sliding up and down is arranged in the limiting guide sleeve, and the lower end of the supporting column extends into the inner cavity of the shell. The upper end of the supporting column extends out of the limiting guide sleeve and is vertically and fixedly provided with a mounting plate, the section, extending into the inner cavity of the shell, of the supporting column is sleeved with an upper spring, the upper end of the upper spring is connected with the top wall of the inner cavity of the shell, the lower end of the upper spring is connected with the supporting plate, and a lower spring is arranged below the supporting plate; the upper ends of the lower springs are connected with the supporting plate, and the lower ends of the lower springs are connected with the bottom wall of the inner cavity of the shell. The device can effectively reduce vertical vibration and transverse vibration, can guarantee normal use of photoelectric equipment, is safe and reliable, convenient to install, long in service life, simple in structure and easy to produce in batches.

Description

Technical Field

[0001] The present invention relates to the technical field of ships and boats, and in particular to a vibration damping device. Background Art

[0002] Marine surveying and mapping optoelectronic equipment is widely used on unmanned boats and surveying vessels. It is a high-precision optoelectronic system specifically designed for measurement, navigation, and environmental monitoring in oceans, inland rivers, and other waterways. Currently, optoelectronic equipment on ships is typically rigidly mounted atop the bridge or at the bow. During navigation, ships experience high-frequency vibrations from the main engine's operation, as well as low-frequency vibrations from the ship's contact with the water. To mitigate the impact of hull vibrations on optoelectronic equipment, a common approach is to add mounting pads between the mounting surface of the optoelectronic equipment and the deck to reduce vibration transmission. Traditional vibration damping pads can only partially absorb high-frequency, low-amplitude vertical vibrations and are unable to filter low-frequency, high-amplitude, and lateral vibrations. Furthermore, since the optoelectronic equipment is bolted to the hull, vibrations can also be transmitted to the equipment through the bolts. A single vibration damping pad cannot effectively filter vibrations, resulting in reduced surveying and mapping accuracy and reliability of the optoelectronic equipment.

[0003] In view of this, it is necessary to improve the existing technology. Summary of the Invention

[0004] The object of the present invention is to provide a vibration damping device, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned object, the technical solution adopted is as follows:

[0005] The cam is connected to the top of the support plate, and the cam is connected to the bottom of the support plate, and the cam is connected to the top of the support plate, and the cam is connected to the bottom of the support plate.

[0006] Preferably, the housing is cylindrical.

[0007] Preferably, an annular connecting plate is fixedly provided on the circumference of the bottom of the shell, and the annular connecting plate is connected to the bottom plate by bolts.

[0008] Preferably, the inner cavity of the shell is cylindrical, and the cylindrical inner cavity of the shell is coaxially arranged with the cylindrical shell.

[0009] Preferably, the cylindrical inner cavity of the housing is coaxially arranged with the limiting guide sleeve.

[0010] Preferably, a bottom vibration-damping pad is provided on the bottom surface of the bottom plate.

[0011] Preferably, a top vibration-damping pad is provided on the top surface of the mounting plate.

[0012] Preferably, an inner wall of the inner cavity of the shell is provided with an inner lining vibration damping pad, and the inner lining vibration damping pad extends to the inner wall of the limiting guide sleeve.

[0013] Preferably, the upper spring and the lower spring are both in a compressed state, the free heights of the upper spring and the lower spring are both 36-42 mm, and the deformation amounts are both 2-7 mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The vibration reduction device of the present invention can effectively reduce vertical vibration and lateral vibration, ensure the normal use of optoelectronic equipment, is safe and reliable, easy to install, and has a long service life. In addition, the device has a simple structure and is easy to mass produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a partial cross-sectional view of the device of the present invention.

[0018] Figure 2 It is an overall cross-sectional view of the device of the present invention.

[0019] In the figure: 1. Base plate; 2. Bottom vibration damping pad; 3. Shell; 4. Annular connecting plate; 5. Limiting guide sleeve; 6. Lining vibration damping pad; 7. Support column; 8. Support plate; 9. Mounting plate; 10. Top vibration damping pad; 11. Upper spring; 12. Lower spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] like Figures 1 to 2 As shown, a preferred embodiment of the present invention provides a vibration reduction device.

[0023] The device includes a base plate 1, with a rubber bottom vibration damping pad 2 attached to its bottom surface. A housing 3 is located on its top surface. The housing 3 is cylindrical in shape, with its bottom perpendicular to the base plate 1. Specifically, an annular connecting plate 4 is fixedly mounted circumferentially to the bottom of the housing 3, which is in contact with the base plate 1 and bolted together. The housing 3 is hollow; specifically, its inner cavity is cylindrical and coaxial with the cylindrical housing 3.

[0024] A tubular limiting guide sleeve 5 is fixedly mounted on the top of the housing 3. Specifically, the limiting guide sleeve 5 is coaxially arranged with the housing's inner cavity, communicating with the inner cavity. The inner diameter of the limiting guide sleeve 5 is smaller than that of the housing's inner cavity. A rubber lining and vibration damping pad 6 is attached to the inner wall of the housing's inner cavity and extends to the inner wall of the limiting guide sleeve 5.

[0025] A support column 7 is provided within the limiting guide sleeve 5, which can slide up and down. The support column 7 has a clearance fit with the inner lining vibration damping pad 6 on the inner wall of the limiting guide sleeve 5. The lower end of the support column 7 extends into the inner cavity of the shell. A support plate 8 is vertically fixedly mounted on the lower end of the support column 7. The support plate 8 is circular and has a clearance fit with the inner lining vibration damping pad 6 in the inner cavity of the shell. The upper end of the support column 7 extends out of the limiting guide sleeve 5. A mounting plate 9 is vertically fixedly mounted on the upper end of the support column 7. The top surface of the mounting plate 9 is affixed to a rubber top vibration damping pad 10.

[0026] The section of the support column 7 that extends into the inner cavity of the shell is fitted with an upper spring 11. The upper end of the upper spring 11 is connected to the top wall of the inner cavity of the shell, and the lower end of the upper spring 11 is connected to the support plate 8. The free height of the upper spring 11 is 36-42 mm, and in this embodiment it is 38 mm. The deformation during installation is 2-7 mm. A lower spring 12 is provided below the support plate 8. The upper end of the lower spring 12 is connected to the support plate 8, and the lower end of the lower spring 12 is connected to the bottom wall of the inner cavity of the shell. The free height of the lower spring 12 is 36-42 mm, and in this embodiment it is 38 mm. The deformation during installation is 2-7 mm. After installation, both the upper spring 11 and the lower spring 12 are in a compressed state.

[0027] The device is installed at a suitable position on the ship, such as on the deck. Specifically, the bottom plate 1 is fixedly connected to the deck by bolts. The optoelectronic device is installed on the mounting plate 9.

[0028] The main sources of vibration for optoelectronic equipment during ship operation are the operating main engine and the hull impacting the water. The main types of vibration are vertical, high-frequency, low-amplitude vibration and transverse, high-frequency, low-amplitude vibration generated by the main engine, and vertical, low-frequency, high-amplitude vibration and transverse, low-frequency, high-amplitude vibration generated by the hull impacting the water.

[0029] Both vertical high-frequency, low-amplitude vibrations and vertical low-frequency, high-amplitude vibrations are transmitted through the hull and effectively filtered out by bottom vibration-damping pad 2. The remaining vibrations are transmitted to bottom plate 1, with some being transmitted to hull 3 via bolts. The vibrations on bottom plate 1 and hull 3 are effectively isolated by upper springs 11 and lower springs 12 when they are transmitted to support columns 7. The remaining vibrations are filtered and isolated by top vibration-damping pad 10 when they are transmitted to the optoelectronic equipment via support columns 7 and mounting plate 9.

[0030] In order to effectively filter vertical low-frequency and high-amplitude vibrations, the free heights of the upper spring 11 and the lower spring 12 are both 36-42 mm, the deformation during installation is 2-7 mm, and the maximum working load is 400N-520N, which can effectively reduce the amplitude of vibration.

[0031] Both transverse high-frequency, low-amplitude vibrations and transverse low-frequency, high-amplitude vibrations are transmitted through the hull and, via bolts, to bottom plate 1 and hull 3. Because hull 1 and support column 7 (including support plate 8) are not rigidly connected, the transverse vibration displacement generated by bottom plate 1 and hull 3 causes slippage between upper spring 11 and lower spring 12, thereby isolating the transverse vibration from being transmitted to support column 7. Furthermore, the provision of liner vibration-damping pads 6 effectively isolates the transverse high-frequency, low-amplitude vibrations transmitted from hull 3 to support column 7.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vibration damping device, characterized in that: The cam is provided with a plurality of support plates, the support plates are connected to the support plates in a vertical direction and the support plates are connected to the support plates in a vertical direction. The support plates are connected to the support plates in a vertical direction and the support plates are connected to the support plates in a vertical direction. The support plates are connected to the support plates in a vertical direction and the support plates are connected to the support plates in a vertical direction. The support plates are connected to the support plates in a vertical direction and the support plates are connected to the support plates in a vertical direction. The support plates are connected to the support plates in a vertical direction and the support plates are connected to the support plates in a vertical direction.

2. A vibration damping device according to claim 1, characterized in that: The shell is cylindrical.

3. A vibration damping device according to claim 2, characterized in that: An annular connecting plate is fixedly provided on the circumference of the bottom of the shell, and the annular connecting plate is connected to the bottom plate by bolts.

4. A vibration damping device according to claim 2, characterized in that: The inner cavity of the shell is cylindrical, and the cylindrical inner cavity of the shell is coaxially arranged with the cylindrical shell.

5. A vibration damping device according to claim 4, characterized in that: The cylindrical inner cavity of the shell is coaxially arranged with the limiting guide sleeve.

6. The vibration damping device according to claim 1, characterized in that: The bottom surface of the bottom plate is provided with a bottom vibration-damping pad.

7. The vibration damping device according to claim 1, characterized in that: A top vibration-damping pad is provided on the top surface of the mounting plate.

8. The vibration damping device according to claim 1, characterized in that: An inner lining vibration damping pad is provided on the inner wall of the inner cavity of the shell, and the inner lining vibration damping pad extends to the inner wall of the limiting guide sleeve.

9. The vibration damping device according to claim 1, characterized in that: Both the upper spring and the lower spring are in a compressed state, the free height of the upper spring and the lower spring are both 36-42mm, and the deformation is both 2-7mm.

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