JP6125830B2 - How to install the equipment - Google Patents

Description

The present invention relates to a method with 据 installing the equipment of an internal combustion engine or the like.

  Conventionally, in a ship, a diesel engine and a diesel generator called a main engine and an auxiliary machine are installed on an installation surface such as a deck. A method of installing the main machine is disclosed (for example, see Patent Document 1). Below, the installation method of the main machine is demonstrated. First, the main machine is adjusted in inclination, direction, etc. while being floated from the installation surface. This is because the main engine of the ship must accurately determine the positional relationship with the main shaft to which the propeller is fixed.

  Next, the aligned main machine is temporarily fixed. Thereafter, a liquid resin liner (epoxy resin or the like) is poured between the installation surface and the installation surface which is the lower surface of the main machine, and is cured to finally fix the main machine. By this main machine installation method using the resin liner, it is possible to accurately align the main machine and fix it while maintaining an accurate position with respect to the installation surface. In addition, the use of a resin liner makes it possible to install the main machine at a low cost.

  However, the above installation method has a problem that the noise generated in the ship cannot be sufficiently suppressed. This is because the vibration of the main engine transmitted to the hull through the resin liner and the installation surface causes inboard noise. On the other hand, IMO noise regulations have been revised, and noise regulations in residential areas and workshops have been lowered. From the above, countermeasures against noise caused by vibration of the main engine are required.

  As a general noise countermeasure for an engine or the like, a method of installing the engine or the like via an anti-vibration support structure is disclosed (for example, see Patent Document 2). This anti-vibration support structure has a configuration in which vibration is attenuated by an anti-vibration rubber and a compression coil spring. With this configuration, noise from the engine or the like can be suppressed.

  However, this anti-vibration support structure has a problem that it cannot be used for a main machine that requires high accuracy for positioning during installation. This is because the position of the main engine is not uniquely determined due to the displacement and deformation of the anti-vibration support structure.

  In addition, there is a problem that the installation cost increases due to the use of the vibration-proof support structure. This is because the vibration-proof support structure has a complicated structure. In particular, when the main machine has a thrust bearing separately installed outside, a structure that also supports the thrust bearing is required, and the number of parts of the anti-vibration support structure increases and the structure becomes complicated. Furthermore, it is necessary to exchange vibration-proof rubber, compression coil springs, etc., and maintenance costs are incurred.

  In addition, there is a problem that the design of the entire engine room of the ship must be drastically changed due to the adoption of the anti-vibration support structure. This is because the vibration-proof support structure itself is large and it is necessary to secure a space for arranging the vibration-proof support structure.

  In addition, there is a problem that the weight of the ship increases due to the use of the anti-vibration support structure. This is because the weight of the anti-vibration support structure is excessive in order to support the main machine which is a super heavy object.

As described above, conventionally, in an installation structure in which equipment such as a main machine that requires high accuracy for positioning is installed with a resin liner, vibration of the equipment cannot be suppressed and noise cannot be reduced.

Utility Model Registration No. 3174040 JP 2002-130374 A

The present invention has been made in consideration of the above problems, its object is in 据 mounting method mounting the device of the main machine or the like through the resin liner installation surface, suppress the vibration transmitted to the mounting surface from the device then, it is to provide a 据 with how to reduce the noise.

In order to achieve the above object, an installation method according to the present invention includes pouring a liquid resin liner between an installation surface of an apparatus and an installation surface opposite to the installation surface, and then curing the liquid resin liner to place the apparatus on the installation surface. A positioning step for positioning the device with respect to the installation surface, and a piece composed of the cured resin liner is disposed on the installation surface opposite to the installation surface, and a placement step of placing the damping member, pouring the resin liner liquid between said mounting surface and said mounting surface after the placement step, curing the resin liner in a state of enclosing the vibration damping member you; and a fixing step of fixing the device to the mounting surface Te.

  According to the installation structure and the installation method of the present invention, it is possible to provide an installation structure and an installation method that suppress vibrations transmitted from the equipment to the installation surface and reduce noise.

It is the figure which showed the outline of the positioning step in the installation method of embodiment which concerns on this invention. It is the figure which showed the outline of the arrangement | positioning step in the installation method of embodiment which concerns on this invention. It is the figure which showed the outline of the fixing step in the installation method of embodiment which concerns on this invention. It is the figure which showed the outline of the installation structure of different embodiment which concerns on this invention. It is the figure which showed the outline of the installation structure of different embodiment which concerns on this invention.

  Hereinafter, an installation structure and an installation method according to embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an outline of a positioning step in the installation method according to the embodiment of the present invention. Here, a case where the device 2 is a main engine (diesel engine) in a ship will be described as an example. In this positioning step, first, the main machine (equipment) 2 is placed on the installation surface 3 such as a deck to perform positioning. At this time, the main machine 2 is temporarily fixed by a jig or the like, and is in a state of floating from the installation surface 3. Reference numeral 6 denotes an installation surface 6 which is the lower surface of the main machine 2.

  FIG. 2 shows an outline of the arrangement step in the installation method. In this arrangement step, the vibration damping member 4 is arranged between the installation surface 6 and the installation surface 3 of the main machine 2. It is desirable that the vibration damping member 4 is appropriately disposed at various locations corresponding to the main engine 2.

  Here, the vibration damping member 4 can be made of any material having conventional vibration damping or vibration damping performance such as rubber or urethane. Desirably, the damping member 4 is made of a porous metal. The vibration damping member made of this porous metal will be described. The porous metal has a plurality of voids inside, and has a property of attenuating the vibration of the main engine 2 by the complicated structure of the voids and not resonating with the frequency of the vibration. This porous metal can be constituted, for example, by pressing a metal cutting waste. In particular, it is desirable to use cast iron cutting waste as a raw material. This is because the shape and arrangement of the air gap are complicated, and the performance of damping vibration is improved. The porous metal may be made of a foam metal made of aluminum, aluminum alloy, or the like.

  FIG. 3 shows an outline of the fixing step in the installation method. In this fixing step, a liquid resin liner (epoxy resin or the like) 5 is poured between the installation surface 6 and the installation surface 3 of the main machine 2 and cured. By hardening the resin liner 5, the main machine 2 is fixed to the installation surface 3 such as a deck. Here, when the resin liner 5 is poured, a leak-proof dam or the like (not shown) is disposed. Finally, a jig (not shown) arranged for positioning the main machine 2 is removed, and the installation of the main machine 2 is completed. Reference numeral 1 denotes an installation structure 1 including a vibration damping member 4 and a resin liner 5 disposed between the main machine 2 and the installation surface 3.

  Here, the thickness of the resin liner 5 (length in the vertical direction in FIG. 3) varies depending on the size of the ship, but is about 35 mm in the case of a general merchant ship such as a 56,000 ton-type bulk carrier. Moreover, the thickness of the damping member 4 can be suitably determined according to the vibration damping performance required for the damping member 4 in the range of about 3 to 25 mm.

  With the above configuration, the installation structure 1 and the installation method of the present invention can obtain the following effects. First, vibrations transmitted from the device (main machine) 2 to the installation surface 3 can be suppressed, and noise can be reduced. This is because the damping member 4 absorbs vibration transmitted from the main machine 3 to the installation surface 3. In particular, when the damping member 4 made of a porous metal is employed, noise can be further reduced. This is because the damping member 4 made of a porous metal has the property of absorbing vibration and not causing a resonance phenomenon.

  Second, noise caused by vibration of the device 2 can be reduced at low cost. This is because, for example, the manufacturing cost of the vibration damping member 4 made of porous metal or the like is low. Moreover, it is because the installation method which installs the apparatus 2 only arranges the damping member 4 in the middle of the conventional work, and is simple.

  Thirdly, an increase in the weight of the installation structure 1 can be suppressed. This is because even the vibration damping member 4 employing any material is sufficiently light compared to the vibration-proof support structure described in Patent Document 2 described above. In particular, in ship installation structures, there is a strong demand for weight reduction.

  In addition, the position (height) where the damping member 4 is arranged is not limited to the position shown in FIGS. For example, a frame or the like formed by curing a resin liner on the installation surface 3 may be disposed, and the vibration damping member 4 may be disposed on the frame. Alternatively, the resin liner 5 may be poured between the installation surface 6 and the installation surface 3, and then the vibration damping member 4 may be disposed and the resin liner 5 may be further poured.

  Furthermore, the area of the vibration damping member 4 in plan view can be appropriately determined according to the device 2. In addition, the above-described installation structure 1 can be employed for devices that are fixed to the wall surface.

  FIG. 4 shows an installation structure 1A according to another embodiment of the present invention. This installation structure 1 </ b> A has a configuration in which a vibration damping member 4 </ b> A is fixed in advance to an installation surface 6 that is a lower surface of a main machine (device) 2. The damping member 4A can be fixed using a known method such as a bolt or an adhesive.

  Next, an installation method in the installation structure 1 will be described. First, for example, in a factory or the like that manufactures the device 2, the vibration damping member 4A is installed on the installation surface 6 of the device 2 (installation step). Thereafter, at the site where the device 2 is installed, the device 2 is arranged with respect to the installation surface 3 and positioned (positioning step). Finally, the resin liner 5 is poured into the space between the installation surface 6 and the vibration damping member 4A of the device 2 and the installation surface 3 and is cured (fixing step).

  With the above configuration, the installation structure 1A and the installation method of the present invention can obtain the following effects. 1stly, the vibration transmitted to the installation surface 3 from the apparatus 2 can be suppressed similarly to the above-mentioned, and a noise can be reduced.

  Secondly, it is possible to improve the workability at the time of installation of the device 2 and reduce the cost. This is because, for example, at a site such as a shipyard where the equipment 2 is installed, it is only necessary to perform work that is almost the same as the conventional installation method. That is, at the site, an installation operation for performing a positioning step for positioning the device 2 and a fixing step for fixing with the resin liner 5 may be performed. In particular, when the area where the vibration damping member is installed is large, work (arrangement step) for transferring and arranging the vibration damping member at the site is not required, so the workability when installing the device 2 is greatly improved. To do.

  In the case of the installation structure 1 shown in FIG. 3, noise can be reduced while using the conventional device 2 as it is. Therefore, the installation structure 1 of the present invention can be adopted based on the judgment of the side having the work site such as a shipyard.

  On the other hand, in the case of the installation structure 1 </ b> A shown in FIG. 4, the damping member 4 </ b> A can be installed by a manufacturer that manufactures the device 2. Therefore, the installation structure 1 </ b> A of the present invention can be adopted based on the judgment of the manufacturer that manufactures the device 2. At this time, since the side having the work site such as a shipyard does not change the installation method, the installation structure 1A can be easily adopted.

  FIG. 5 shows an installation structure 1B according to another embodiment of the present invention. In the installation structure 1 </ b> B, the device 2 </ b> B has at least one recess 7 formed on the installation surface 6, and the vibration damping member 4 </ b> B is fixed in advance in the recess 7. In particular, it is desirable to configure the lower surface of the vibration damping member 4B and the installation surface 6 of the device 2B so that there is no step and the same plane is formed (so as to be flush with each other).

  With this configuration, the installation structure 1B and the installation method of the present invention can obtain the following functions and effects in addition to the functions and effects obtained by the installation structure 1A shown in FIG. 1stly, durability of the installation structure 1B of the apparatus 2B can be improved. This is because the expansion of the damping member 4B can be restrained by the recess 7 even when the damping member 4B is expanded by heat. By this restriction, it is possible to prevent an accident in which the vibration damping member 4B expands in the left-right direction in FIG. 5 and presses and destroys the resin liner 5.

  Specifically, for example, when the installation structure 1 </ b> A shown in FIG. 4 is employed in a device 2 that generates heat, such as a diesel engine, a metal damping member 4 </ b> A having a higher coefficient of thermal expansion than the resin liner 5 is illustrated. 4. There is a possibility that the resin liner 5 may be broken due to expansion in the left-right direction. On the other hand, since the installation structure 1B shown in FIG. 5 can restrain the thermal expansion of the damping member 4B by the recess 7, the resin liner 5 can be prevented from being broken.

  Secondly, the above-described effects can be realized with a slight increase in cost. This is because the processing of the recess 7 of the device 2B only needs to fix the vibration damping member 4B, and high processing accuracy is not required.

  Thirdly, workability at the time of installation of the device 2B can be further improved. This is because in the device 2B, there is no change in the external shape due to the installation of the damping member 4B, and the same installation work as the conventional installation method can be adopted at the site such as a shipyard.

  Note that the number and volume of the recesses 7 formed on the installation surface 6 of the device 2B can be appropriately determined from the size of the device 2B and the vibration damping member 4B.

  From the above, the installation structures 1, 1A, 1B and the installation method of the present invention can suppress vibrations transmitted from the devices 2, 2B to the installation surface 3 and reduce noise. In addition, this invention can be mainly employ | adopted as the installation structure of the main machine and auxiliary machine of a ship. The present invention can also be used as an installation structure for other equipment such as a windlass (mooring equipment). Furthermore, the present invention can also be employed as an installation structure for a generator installed in a building or the like.

1, 1A, 1B Installation structure 2, 2B Equipment 3 Installation surface 4, 4A, 4B Damping member 5 Resin liner 6 Installation surface 7 Recess

Claims (1)

In the installation method of pouring a liquid resin liner between the installation surface of the device and the installation surface facing the installation surface, and then curing and fixing the device to the installation surface,
A positioning step for positioning the device relative to the installation surface;
An arrangement step of disposing a piece composed of the cured resin liner on the installation surface facing the installation surface, and disposing a damping member on the piece ;
After the placement step , the liquid resin liner is poured between the installation surface and the installation surface, and the resin liner is cured in a state of including the vibration damping member, thereby fixing the device to the installation surface. An installation method comprising: steps.

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