HALF type shock absorbing bumping device and mounting method

Abstract

The application provides a HALF shock absorption and impact resistance device and a mounting method. The device comprises an upper shock absorber, a HALF intermediate mass and a lower shock absorber. The HALF intermediate mass is composed of a left mass and a right mass which are connected by an intermediate connecting piece. The upper shock absorber is connected to the top of the HALF intermediate mass and the foot of the equipment to be isolated by an upper connecting piece. The lower shock absorber is connected to the bottom of the HALF intermediate mass and the base by a lower connecting piece. The device can reduce the transmission of equipment vibration to the base, improve the vibration and noise environment of the ship, isolate the impact vibration from the mounting base and protect the safety of the equipment.

Description

Technical Field

[0001] The present application relates to the technical field of ship vibration reduction and impact resistance design, and in particular to a HALF type vibration reduction and impact resistance device and an installation method thereof. Background Art

[0002] Modern ships are facing increasing demands for vibration and noise. At the same time, some ships often face high vibration and strong impact environments. Therefore, effective vibration reduction and impact resistance measures must be implemented for noise-generating equipment in ship design. On the one hand, this reduces the transmission of equipment vibration from the mounting base to the hull structure, reducing vibration noise in the ship's cabin and underwater radiated noise. On the other hand, when the ship is in high vibration and strong impact environments, the impact vibration from the mounting base is isolated, ensuring safe and reliable operation of the equipment and improving the ship's vitality.

[0003] Due to overall vessel resource constraints, many pump units are waist-mounted, limiting installation space. These large pump bodies generate significant vibration, making conventional vibration damping and impact-resistance devices difficult to meet installation, maintenance, and upkeep requirements for these pump units. These pump units are widely distributed on ships and are essential for ship operation, representing a key source of vibration and noise that must be addressed in ship design. Therefore, a device with a simple structure, easy assembly and disassembly, and effective vibration damping and impact resistance is urgently needed to resolve this issue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a HALF type vibration reduction and impact resistance device and installation method for the above-mentioned problems. The device has a compact structure, can be quickly disassembled and installed, has good vibration reduction and impact resistance, can meet the vibration reduction and noise reduction needs of ships, and has excellent impact resistance.

[0005] The embodiment of the present application is implemented as follows:

[0006] An embodiment of the present application provides a HALF type vibration damping and anti-impact device, which is characterized in that it includes an upper vibration damper, a HALF type intermediate mass block and a lower vibration damper. The HALF type intermediate mass block is composed of a left mass block and a right mass block connected by an intermediate connecting piece. The upper vibration damper is respectively connected to the top of the HALF type intermediate mass block and the machine foot of the vibration-isolated equipment through the upper connecting piece, and the lower vibration damper is respectively connected to the bottom and base of the HALF type intermediate mass block through the lower connecting piece.

[0007] In some optional embodiments, the left mass block and the right mass block are both formed by welding an upper panel, a lower panel, a web and a liner.

[0008] In some optional embodiments, the intermediate connecting member includes a positioning pin, an intermediate connecting bolt and an intermediate connecting nut. The left and right mass blocks are positioned by the positioning pin, and then connected and tightened by the intermediate connecting bolt and the intermediate connecting nut. The intermediate connecting bolt and the intermediate connecting nut are divided into two groups, which are respectively installed on both sides of the positioning pin.

[0009] In some optional embodiments, the upper connecting member includes a vibration isolation device connecting assembly and an upper connecting assembly. The vibration isolation device connecting assembly includes a vibration isolation device connecting bolt, which connects the vibration isolated device and the upper vibration absorber through the vibration isolation device connecting bolt. The upper connecting assembly includes an upper connecting bolt and an upper connecting nut, which connects the upper vibration absorber and the HALF-type intermediate mass block. There are four groups of upper connecting bolts and upper connecting nuts, which correspond to the machine feet of the device to be vibration isolated.

[0010] In some optional embodiments, the lower connecting member includes a mass block connecting assembly and a lower connecting assembly, the mass block connecting assembly includes a mass block connecting bolt and a mass block connecting nut, the HALF type intermediate mass block and the lower shock absorber are connected by the mass block connecting bolt and the mass block connecting nut, the lower connecting assembly includes a lower connecting bolt and a lower connecting nut, connecting the lower shock absorber and the base, the lower connecting bolts and the lower connecting nuts are four groups, which are respectively installed corresponding to the four corners of the HALF type intermediate mass block.

[0011] In some optional embodiments, the upper vibration absorber and the lower vibration absorber are both vibration absorbers with self-limiting function.

[0012] In some optional embodiments, adjustment pads are provided between the bottom surface of the upper vibration absorber and the top surface of the HALF-type intermediate mass block, and between the bottom surface of the lower vibration absorber and the top surface of the base.

[0013] In some optional embodiments, an intermediate flat washer is provided between the intermediate connecting bolt and the contact surface of the HALF type intermediate mass block, and an intermediate elastic washer and an intermediate flat washer are provided between the intermediate connecting nut and the contact surface of the HALF type intermediate mass block; a vibration isolation elastic washer and a vibration isolation flat washer are provided between the vibration isolation equipment connecting bolt and the contact surface of the vibration isolated equipment, an upper flat washer is provided between the upper connecting bolt and the contact surface of the HALF type intermediate mass block, and an upper elastic washer and an upper flat washer are provided between the upper connecting nut and the contact surface of the HALF type intermediate mass block; a mass block flat washer is provided between the contact surface of the mass block connecting bolt and the lower vibration isolator, a mass block elastic washer and a mass block flat washer are provided between the contact surface of the mass block connecting nut and the HALF type intermediate mass block, a lower flat washer is provided between the contact surface of the lower connecting bolt and the lower vibration isolator, and a lower elastic washer and a lower flat washer are provided between the contact surface of the lower connecting nut and the base.

[0014] In some optional embodiments, the weight of the HALF-type intermediate mass block is not less than 40% of the weight of the vibration-isolated equipment, the total rated load-bearing capacity of the upper vibration absorber is 1.2 times the weight of the vibration-isolated equipment, and the total rated load-bearing capacity of the lower vibration absorber is 1.2 times the total weight of the vibration-isolated equipment, the upper vibration absorber, and the HALF-type intermediate mass block.

[0015] A method for installing a HALF type vibration reduction and impact resistance device, characterized by comprising the following steps:

[0016] Step a: Assemble the HALF intermediate mass block:

[0017] First, hoist the vibration-isolated pump unit to the installation location on board, then hoist the left and right mass blocks of the HALF-type intermediate mass block so that the pump unit is located in the middle opening of the HALF-type intermediate mass block. Then, use the locating pins to position and connect the left and right mass blocks. Then, tighten them with the middle connecting bolts and middle connecting nuts to form a complete HALF-type intermediate mass block.

[0018] Step b, install the lower shock absorber:

[0019] First, install the four lower vibration absorbers at the four corners of the HALF-type middle mass block using mass block connecting bolts and mass block connecting nuts, and then connect the lower vibration absorbers to the base using lower connecting bolts and lower connecting nuts.

[0020] Step c, install the upper shock absorber:

[0021] First, connect the four upper vibration absorbers to the machine feet of the vibration-isolated equipment through the vibration isolation equipment connecting bolts; then connect the upper vibration absorber to the HALF-type middle mass block through the upper connecting bolts and upper connecting nuts;

[0022] Step d, remove the hoist:

[0023] Ensure that the isolated equipment and the HALF type vibration reduction and anti-impact device are in a free state. After preloading for 48 hours, measure the height dimensions of the four upper vibration absorbers and the four lower vibration absorbers to ensure that the difference in deformation values ​​of the vibration absorbers on the same layer is less than 20% of the average deformation under the rated load. If it exceeds the requirement, grind the adjustment pads under the vibration absorbers to achieve final leveling, realize good vibration reduction and anti-impact performance, and complete the assembly of the entire HALF type vibration reduction and anti-impact device.

[0024] The beneficial effects of the present application are: the present application provides a HALF type vibration reduction and anti-impact device and installation method, the middle mass block adopts a HALF type structure, the structure is simple and compact, and can be quickly disassembled and assembled using positioning pins and bolts, fully considering the installation, maintenance and maintenance requirements of the vibration-isolated equipment; the whole is assembled using bolt connections, the overall process is simple, and it is easy to process and produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a front view of an embodiment of the present application;

[0027] Figure 2 A side view of an embodiment of the present application;

[0028] Figure 3 A top view of an embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the assembly of the intermediate connecting member of an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the assembly of the upper connecting member of an embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the assembly of the lower connecting member of an embodiment of the present application. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0038] In the present application, unless specifically defined and limited otherwise, "on" or "under" of a first feature with respect to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below" and "underneath" of a first feature with respect to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0039] The features and performances of the present application are further described in detail below in combination with embodiments.

[0040] As shown in Figure 1-Figure 3 , the present application proposes a HALF type shock absorbing and impact resisting device, which comprises an upper shock absorber 1, a HALF type intermediate mass 2 and a lower shock absorber 3, the HALF type intermediate mass is composed of a left mass 4 and a right mass 5 connected through an intermediate connecting member, the upper shock absorber is connected with the top of the HALF type intermediate mass and the foot of an isolated equipment 6 through upper connecting members respectively, and the lower shock absorber is connected with the bottom of the HALF type intermediate mass and a base 7 through lower connecting members respectively.

[0041] In some optional embodiments, the left mass and the right mass are both formed by welding an upper panel, a lower panel, a web and a lining. The intermediate connecting member comprises a positioning pin 8, an intermediate connecting bolt 9 and an intermediate connecting nut 10, the left and right masses are positioned through the positioning pin, and then fastened and connected through the intermediate connecting bolt and the intermediate connecting nut, the intermediate connecting bolt and the intermediate connecting nut are two groups, which are respectively arranged on the two sides of the positioning pin (see Figure 4 ).

[0042] During assembly, the isolated equipment is first hoisted to the position of the central opening 11 of the HALF type intermediate mass, then the positioning pin at the bolt connection surface of the HALF type structure is used to quickly butt joint the two halves of the HALF type structure symmetrically, and then the bolt is used for fastening and connecting to form a complete HALF type intermediate mass.

[0043] To achieve optimal vibration reduction, the weight of the intermediate mass should generally be no less than 40% of the weight of the equipment being isolated. The total rated load capacity of the upper vibration damper (BE type is recommended) is generally 1.2 times the wet weight of the equipment being isolated, and the total rated load capacity of the lower vibration damper (6JX type is recommended) is generally 1.2 times the combined weight of the equipment being isolated, the upper vibration damper, and the intermediate mass. To ensure equipment safety in strong impact environments, both the upper and lower vibration dampers must be self-limiting. This prevents excessive displacement and deformation in strong impact environments, protects the equipment being isolated and the external piping, and can isolate more than 90% of the impact energy.

[0044] like Figure 5 As shown, the upper connecting part includes a vibration isolation device connecting component and an upper connecting component. The vibration isolation device connecting component includes a vibration isolation device connecting bolt 12, which connects the vibration isolated device and the upper vibration absorber through the vibration isolation device connecting bolt. The upper connecting component includes an upper connecting bolt 13 and an upper connecting nut 14, which connects the upper vibration absorber and the HALF type intermediate mass block. There are four groups of upper connecting bolts and upper connecting nuts, which respectively correspond to the machine feet of the device to be vibration isolated.

[0045] like Figure 6 As shown, the lower connecting member includes a mass block connecting assembly and a lower connecting assembly. The mass block connecting assembly includes a mass block connecting bolt 15 and a mass block connecting nut 16, which connect the HALF type intermediate mass block and the lower shock absorber through the mass block connecting bolt and the mass block connecting nut. The lower connecting assembly includes a lower connecting bolt 17 and a lower connecting nut 18, which connect the lower shock absorber and the base. There are four groups of lower connecting bolts and lower connecting nuts, which are respectively installed corresponding to the four corners of the HALF type intermediate mass block.

[0046] Adjustment pads 19 are provided between the bottom surface of the upper vibration absorber and the top surface of the HALF type intermediate mass block, and between the bottom surface of the lower vibration absorber and the top surface of the base.

[0047] An intermediate flat washer 20 is provided between the intermediate connecting bolt and the contact surface of the HALF type intermediate mass block, and an intermediate elastic washer 21 and an intermediate flat washer 22 are provided between the intermediate connecting nut and the contact surface of the HALF type intermediate mass block; a vibration isolation elastic washer 23 and a vibration isolation flat washer 24 are provided between the vibration isolation equipment connecting bolt and the vibration isolated equipment, an upper flat washer 25 is provided between the upper connecting bolt and the contact surface of the HALF type intermediate mass block, and an upper elastic washer 26 and an upper flat washer 27 are provided between the upper connecting nut and the contact surface of the HALF type intermediate mass block; a mass block flat washer 28 is provided between the contact surface of the mass block connecting bolt and the lower vibration isolator, a mass block elastic washer 29 and a mass block flat washer 30 are provided between the contact surface of the mass block connecting nut and the HALF type intermediate mass block, a lower flat washer 31 is provided between the contact surface of the lower connecting bolt and the lower vibration isolator, and a lower elastic washer 32 and a lower flat washer 33 are provided between the contact surface of the lower connecting nut and the base.

[0048] The weight of the HALF-type intermediate mass block shall not be less than 40% of the weight of the equipment to be isolated. The total rated load-bearing capacity of the upper vibration absorber shall be 1.2 times the weight of the equipment to be isolated. The total rated load-bearing capacity of the lower vibration absorber shall be 1.2 times the total weight of the equipment to be isolated, the upper vibration absorber and the HALF-type intermediate mass block.

[0049] The installation method of the above-mentioned HALF type vibration reduction and impact resistance device includes the following steps:

[0050] Step a: Assemble the HALF intermediate mass block:

[0051] First, the vibration-isolated pump unit is hoisted to the installation position on board, and then the left and right mass blocks of the HALF-type intermediate mass block are hoisted so that the pump unit is located in the middle opening of the HALF-type intermediate mass block; then, the left and right mass blocks are positioned and docked using locating pins; and then, they are fastened together using intermediate connecting bolts and intermediate connecting nuts to form a complete HALF-type intermediate mass block.

[0052] Step b, install the lower shock absorber:

[0053] First, the four lower vibration absorbers are installed corresponding to the four corners of the HALF type middle mass block through the mass block connecting bolts and mass block connecting nuts, and then the lower vibration absorbers are connected to the base through the lower connecting bolts and lower connecting nuts.

[0054] Step c, install the upper shock absorber:

[0055] First, the four upper vibration absorbers are connected to the machine feet of the vibration-isolated equipment through the vibration isolation equipment connecting bolts; then the upper vibration absorber is connected to the HALF-type intermediate mass block through the upper connecting bolts and upper connecting nuts.

[0056] Step d, remove the hoist:

[0057] Ensure that the isolated equipment and the HALF type vibration reduction and anti-impact device are in a free state. After preloading for 48 hours, measure the height dimensions of the four upper vibration absorbers and the four lower vibration absorbers to ensure that the difference in deformation values ​​of the vibration absorbers on the same layer is less than 20% of the average deformation under the rated load. If it exceeds the requirement, grind the adjustment pads under the vibration absorbers to achieve final leveling, realize good vibration reduction and anti-impact performance, and complete the assembly of the entire HALF type vibration reduction and anti-impact device.

[0058] The present invention has good vibration reduction performance in the entire frequency band, covering low frequency, medium frequency and high frequency. The vibration reduction effect in the entire frequency band can reach more than 25dB, and the vibration reduction effect in the high frequency band is greater than 35dB.

[0059] The present invention can be promoted and applied by selecting the vibration absorber and adaptively modifying the intermediate mass structure according to the size, weight and other parameters of the vibration-isolating equipment, and has wide practicality, economy and social benefits.

[0060] The above is only a preferred embodiment of this intellectual achievement, but this intellectual achievement should not be limited to the contents disclosed in this embodiment and the accompanying drawings. All equivalents or modifications completed without departing from the spirit disclosed in this invention fall within the scope of protection of this invention.

Claims

1. A HALF type vibration reduction and impact resistance device, characterized in that: It includes an upper shock absorber, a HALF type middle mass block and a lower shock absorber. The vibration-isolated equipment is located at the central opening of the HALF type middle mass block. The HALF type middle mass block is composed of a left mass block and a right mass block connected by an intermediate connecting piece. The upper shock absorber is respectively connected to the top of the HALF type middle mass block and the machine feet of the vibration-isolated equipment through the upper connecting piece, and the lower shock absorber is respectively connected to the bottom and the base of the HALF type middle mass block through the lower connecting piece; the left mass block and the right mass block are both welded by an upper panel, a lower panel, a web and a lining plate; the intermediate connecting piece includes a positioning pin, an intermediate connecting bolt and an intermediate connecting nut. The left and right mass blocks are positioned by the positioning pin, and then the left and right mass blocks are connected and fastened by the intermediate connecting bolt and the intermediate connecting nut. There are two groups of intermediate connecting bolts and intermediate connecting nuts, which are respectively installed on both sides of the locating pin; the upper connecting member includes a vibration isolation device connecting assembly and an upper connecting assembly, and the vibration isolation device connecting assembly includes a vibration isolation device connecting bolt, through which the vibration isolation device connecting bolt is used to connect the vibration isolated device and the upper vibration absorber, and the upper connecting assembly includes an upper connecting bolt and an upper connecting nut, which are used to connect the upper vibration absorber and the HALF type intermediate mass block; the lower connecting member includes a mass block connecting assembly and a lower connecting assembly, and the mass block connecting assembly includes a mass block connecting bolt and a mass block connecting nut, through which the HALF type intermediate mass block and the lower vibration absorber are connected, and the lower connecting assembly includes a lower connecting bolt and a lower connecting nut, which is used to connect the lower vibration absorber and the base.

2. A HALF type vibration reduction and impact resistance device according to claim 1, characterized in that: The upper shock absorber and the lower shock absorber are both shock absorbers with self-limiting function.

3. A HALF type vibration reduction and anti-impact device according to claim 1 or 2, characterized in that: Adjustment pads are provided between the bottom surface of the upper vibration absorber and the top surface of the HALF type intermediate mass block, and between the bottom surface of the lower vibration absorber and the top surface of the base.

4. A HALF type vibration reduction and impact resistance device according to claim 3, characterized in that: The weight of the HALF-type intermediate mass block is not less than 40% of the weight of the vibration-isolated equipment, the total rated load-bearing capacity of the upper vibration absorber is 1.2 times the weight of the vibration-isolated equipment, and the total rated load-bearing capacity of the lower vibration absorber is 1.2 times the total weight of the vibration-isolated equipment, the upper vibration absorber, and the HALF-type intermediate mass block.

5. The installation method of the HALF type vibration reduction and impact resistance device according to claim 4 is characterized in that: The steps include: Step a: Assemble the HALF intermediate mass block: First, hoist the vibration-isolated equipment to the installation location on board. Then, hoist the left and right mass blocks of the HALF-type intermediate mass block so that the vibration-isolated equipment is located in the central opening of the HALF-type intermediate mass block. Then, use the locating pins to position and connect the left and right mass blocks. Then, tighten them with the intermediate connecting bolts and intermediate connecting nuts to form a complete HALF-type intermediate mass block. Step b, install the lower shock absorber: First, install the four lower vibration absorbers at the four corners of the HALF-type middle mass block using mass block connecting bolts and mass block connecting nuts, and then connect the lower vibration absorbers to the base using lower connecting bolts and lower connecting nuts. Step c, install the upper shock absorber: First, connect the four upper vibration absorbers to the machine feet of the vibration-isolated equipment through the vibration isolation equipment connecting bolts; then connect the upper vibration absorber to the HALF-type middle mass block through the upper connecting bolts and upper connecting nuts; Step d, remove the hoist: Ensure that the vibration-isolated equipment and the HALF-type vibration-damping and anti-impact device are in a free state. After preloading for 48 hours, measure the height dimensions of the four upper-layer vibration absorbers and the four lower-layer vibration absorbers to ensure that the difference in deformation values ​​of the vibration absorbers on the same layer is less than 20% of the average deformation under the rated load. If it exceeds the requirement, grind the adjustment pads under the vibration absorbers to achieve final leveling, realize good vibration-damping and anti-impact performance, and complete the assembly of the entire HALF-type vibration-damping and anti-impact device.

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