KR200405525Y1 - An apparatus decreasing noise from pile hammer - Google Patents

Abstract

The present invention relates to a pile hammer for artificially installing piles (piles, piles) on the ground, and more particularly, to a device capable of reducing noise generated by pile hammers.

The present invention provides an apparatus for maximally reducing noise generated by ram pile head hitting when a pile is inserted into a support surface by a pile hammer.

Pile hammer, pile, noise absorber

Description

Noise reduction device of pile hammer {AN APPARATUS DECREASING NOISE FROM PILE HAMMER}

1 is a view schematically showing a general pile hammer.

2 is a view showing an embodiment of a noise reduction device according to the present invention, it is a view showing a state in which the pile hammer is mounted.

3 is a view showing an embodiment of a noise reduction device according to the present invention.

4 is a cross-sectional view of FIG. 3.

Figure 5 is a view showing an example of the noise blocking band mounted on the pile according to the present invention.

6 is a view showing a schematic configuration of another embodiment according to the present invention.

FIG. 7 is a cross-sectional view of the cover 30 of FIG.

FIG. 8 is a schematic diagram of the configuration of the embodiment of FIG. 6 and is connected to a ram inside the pile hammer.

9 is a front view of FIG. 7.

10 is a view showing a state in which all the embodiments of the present invention are applied.

<Description of the symbols for the main parts of the drawings>

1: pile hammer housing

2, 3: opening

4: ram shaft

5: ram

10: pile head fitting

20: noise reduction cap body

21: cap connection

22: cap guide means (guide plate)

23: flange

24, 52, 32: connecting bolt

25, 53: sound absorbing material

30: cover

31: cover

32: cover connection

33: air hole

34: ram level gauge

35: shock absorbing spring

36 level gauge guide

50: file

51: noise reduction band

The present invention relates to a pile hammer for artificially installing piles (piles, piles) on the ground, and more particularly, to a device capable of reducing noise generated by pile hammers.

Before building a house or building, the foundation work should be carried out on the ground supporting the load of the superstructure. If the ground surface layer is weak and lacks the support or compressibility, and cannot support the upper structure stably, the lower ground layer penetrates the upper ground surface so that the lower ground with sufficient bearing capacity can take the load of the upper structure. Install piles, etc., up to the support floor of the unit. At this time, if the pile is installed on the general ground, the bearing capacity of the pile is reported to be exerted as the sum of the frictional resistance and the tip support resistance.

How to install the pile can be largely divided into type pile and embedded pile. The type pile is a method that inserts the ready-made concrete piles (PSC, PHC) and steel piles into hammers (diesel hammers, hydraulic hammers, drop hammers, steam hammers, etc.) and inserts them into the support layer. It is widely used as the best method, but there is a fatal problem that very loud noise and vibration occurs during construction by hammer strike. As a result of the numerous complaints caused by these problems, the standard of noise tolerance is being strengthened day by day, and the construction method of installing piles in the type of city becomes increasingly difficult. Moreover, the noise problem as described above becomes a sharp problem even in the pile pile method, since most of the pile piles use the type method in the final entrance process.

Fig. 1 shows a general pile hammer of the type type. The pile 50 is inserted into the pile head mounting hole 10 at the lower end, and then the pile is driven into the ram 5 inside the pile housing 1 to install the pile into the support layer. Since the weight of the ram 5 is very large and the pile is driven vertically by external power, it can be predicted that a very loud noise will occur when the ram of the pile hammer hits the head of the pile. However, noise is more of a problem in areas open to the air than to areas enclosed by the housing 1.

As shown in FIG. 1, there are several openings 2, 3 in the pile hammer housing 1. The role of the openings 2 and 3 facilitates the flow of air inside the pile hammer, and serves as a gauge for the management and maintenance of the hammer and the operating state of the ram 5 moving up and down through the ram shaft 4. In order to do this, a very loud noise is transmitted from the openings 2 and 3 when hitting the pile.

Driving noise also occurs most frequently at the pile where the pile and hammer collide. However, the pile hammer currently used is exposed to the air as it hits the pile and the hammer, so most of the noise generated in the portion is transmitted to the air as it is, this problem is the upper opening (2) (3) It is estimated to be much more serious than noise emissions from.

The present invention is to solve the above problems to provide a more enhanced noise countermeasure. That is, the basic object of the present invention is to provide an apparatus for maximally reducing the noise generated by hitting the pile head of the ram when the pile is inserted into the support surface by the pile hammer.

In addition, in realizing the above object, it is possible to reduce the unnecessary cost of modifying the construction or function of the hammer by only adding noise reduction measures while maintaining the basic construction or function of the pile hammer without modification. Add another purpose.

Still further objects and advantages of the present invention will be described below, which is broader by means of the disclosure in the claims and the disclosure of the embodiments thereof, as well as by means and combinations within a range readily contemplated therefrom. It will be added to the scope and will correspond to the unique effects of the present invention.

In order to achieve the above object, the present invention, as a device for reducing the noise generated by the operation of the pile hammer in the pile hammer to insert the pile into the ground:

A noise reduction cap body having a diameter larger than the diameter of the pile mounted on the hammer, the cylindrical structure surrounding the pile 360 degrees;

A cap connecting portion located above the pile head fitting and connecting the noise reduction cap body to a specific portion of the tip portion of the pile hammer housing; And

And pile guide means for guiding the head of the pile into the noise reduction cap body so that the head of the pile is more easily mounted to the pile head fitting.

In addition, the cap connecting portion of the present invention, the upper portion of the cap body is processed in a flange form at regular intervals, it is good to configure by connecting the cap body to the front end of the pile hammer housing using a connecting bolt thereon.

In addition, the pile guide means of the present invention is composed of a plurality of guide iron plate connected to the inside of the cap body, characterized in that the diameter of the circumference of the machining connecting the inner end of the guide iron plates is larger than the diameter of the pile.

On the other hand it is preferable to achieve the object of the present invention is further filled with a sound absorbing material to fill the space between the guide plate, to prevent noise from escaping to the lower side of the pile hammer housing.

And the file that is inserted into the file head mount,

When the distance from the pile head mounting hole to the end of the cap body is "L", a noise isolation band is provided near the position where the distance from the pile head end is "L", and the sound absorbing material installed on the noise blocking band is added. Include,

When the pile is mounted on the pile hammer, it is good to completely seal the noise generating portion by the noise blocking cap body and the noise blocking band.

Another embodiment of the present invention, in the pile hammer for inserting the pile into the ground, the device for reducing the noise generated by the operation of the pile hammer:

A lid covering an opening formed in the pile hammer, the lid portion being connected to the pile hammer housing, the lid portion including a plurality of air holes leading or sucking the air; And

The cover portion is characterized by consisting of a cover connecting portion for attaching and connecting to the pile hammer housing.

In addition, the noise reduction device of the present invention in a preferred embodiment, the level gauge guide portion of the ram is formed open to the central portion of the cover portion; And a level gauge which moves up and down along the level gauge guide part according to the vertical movement of the ram, and one end of which is connected to the upper part of the ram through a drop shock relief spring.

In addition, further including a sound absorbing material inside the cover portion will give very useful results.

Furthermore, this lid connection is more suitable for attachment and detachment, such that a hole is formed in the edge of the lid and a bolt or pin is inserted into the hole, and then the lid is coupled to the pile hammer housing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the subject matter of the present invention may be unnecessarily obscured as a matter already known to those skilled in the art, such as a known function or a known configuration and function, the specific structure and configuration of the file hammer itself, for example. In principle, the detailed description thereof will be omitted.

First Embodiment

2 and 3 are views of the noise reduction device of the first embodiment of the present invention, Figure 2 shows a state in which the noise reduction device is mounted on the pile hammer housing (1), Figure 3 is a separate noise reduction A side view of the device is shown. Noise reduction device of the present embodiment is composed of a noise reduction cap main body 20, the cap connecting portion 21, the pile guide means 22, is mounted to the lower end of the pile hammer, sealing the part where noise is generated during helm It plays a role.

Noise reduction cap body 20 is composed of a steel cylinder (steel pipe) surrounding the noise generating part 360 degrees, the noise generating part is mainly pile pile mounted to the pile head mounting device 10 and pile head mounting hole of the pile hammer Since it is the head part, the diameter of the steel cylinder has a diameter larger than that of the pile.

The cap body 20 is connected to the housing of the pile hammer by the cap connecting portion 21, and because the cap body 20 wraps around the noise generating portion, it is positioned above the pile head mounting hole 10, It is connected to a specific part of the tip of the pile hammer housing 1. The specific part is predetermined at a position of several hundred millimeters away from the pile head fitting 10 in consideration of noise shielding effect and material cost. In addition, such a cap connecting portion 21, the flange 23 is formed at regular intervals on the upper portion of the cap body, and the cap body is mounted on the tip of the pile hammer housing using the connecting bolt 24 thereon. Processing in flange form and mounting with connecting bolts is meaningful as a means to facilitate removal. If not detachable, but may be firmly attached by a welding method, such as, but the scope of the present invention is not limited by the detailed implementation method of the cap connection portion 21.

On the other hand, the cap body is made of a cylindrical, there is a problem that the pile head mounting holes 10 and the like inside the cap body is not visible. Without countermeasures, very difficult difficulties are expected in mounting the file to the file hammer. Mounting the file to the file hammer accurately and easily is the most basic process of the file hammer, which makes it difficult to reduce the productivity of the whole work. It would be better to abandon the type method and adopt the embedded method in order to reduce the productivity for noise reduction. Therefore, in the present invention, the file guide means 22 for guiding the head of the pile into the noise reduction cap body 20 so that the head of the pile is more easily mounted to the pile head mounting hole 10 in the cap body 20. ) Is provided. The pile guide means 22 of the present invention is composed of a plurality of guide iron plate connected to the inside of the cap body, the diameter of the circumference of the machining connecting the inner end of the guide iron plates (l ₀ ) is the diameter of the pile (l _Greater than _P ) If the diameter of the circumference of the machining (l ₀ ) is smaller than the diameter of the pile, the pile will not be mounted on the hammer. If the diameter (l ₀ ) is too large than the diameter of the pile, the accuracy of the pile mounting operation will be reduced. Since the size of the file is not always a fixed value, it is appropriately pre-adjusted and determined in consideration of these points. In addition, it is necessary to process the lower end of the guide iron plate inclined (taper form) and attach it to the cap main body 20 as shown in the drawing so that the file is more smoothly inserted into the cap main body 20 when the file is inserted.

4 is a sectional view of the noise reduction device of this embodiment.

The spaces inside the cap body 20 are filled with a sound absorbing material 25, in particular, between the guide iron plate 22 and the guide iron plate 22. The sound absorbing material 25 may be selected as a material having sound absorbing properties and sound insulating properties. For example, a member known in the market such as polyurethane foam, polyethylene foam, polyester foam, nonwoven fabric, wood material, porous sound absorbing material is selectively used.

By attaching the above noise reduction cap to the tip of the pile hammer, it is possible to reduce noise generated when hitting the head of the pile on which the pile hammer is mounted, but when the lower part of the cap body is opened, the noise is opened. Because it will leak out, measures to prevent it are necessary. Since there is a pile 50 mounted to the pile hammer under the cap body 20, the open portion will be a gap between the pile 50 to be mounted and the inner wall of the cap body 20. Closing this gap allows the inside of the cap main body 20 to be completely sealed, thereby reducing a significant portion of the noise generated during helming.

To this end, as shown in FIG. 5, a noise blocking band 51 is installed at a specific portion of the pile 50. When the distance from the pile head mounting opening to the end of the cap body is referred to as "L", the distance from the pile head end to the noise isolation band 51 is approximately "L". This location calculation not only ensures the tightness of the seal, but also makes it easy to externally verify that the pile is mounted tightly and securely to the hammer. On the other hand, the distance from the surface of the pile 50 to the circumference of the band 51 is calculated in advance in consideration of the sealing inside the cap body, any material may be selected, but may be selected as steel as the cap body.

And in order to further increase the effect of the noise blocking on the noise blocking band 51 is further provided with a sound absorbing material described above, thereby by the sound absorbing material to fill the inner space of the cap body 20 and the bottom portion of the steel cylindrical cylinder The noise generating part of the ship is completely sealed.

Second Embodiment

This embodiment solves the problem of the openings 2 and 3 of the pile hammer which has been pointed out as a problem of the prior art. At this time, the purpose of the opening (3) of the pile hammer is to check the ease of maintenance, visual measurement of the drop height of the ram, the intake and discharge of air according to the up and down of the ram, and to reduce the noise without damaging these functions. It assumes measures to let you do it.

6 shows an embodiment in which the opening 30 formed in the pile hammer is closed by the lid connecting means 32 after the lid 30 is covered. There are two types of openings in the pile hammer, indicated by reference numerals 2 and 3, the following examples being more suitable as a sealing means for the lower opening 3 than for a sealing against the upper opening 2. Meaning, the following description can be understood as a description of the sound insulation measures from the lower opening 3, the configuration of the cover 30 within the range that can be applied to the upper opening (2) is employed as it is.

7 is a cross-sectional view of the upper cover 30. The cover 30 is composed of a cover 31 and a cover connecting portion 32, the cover 31 of the steel material is a cover for the opening (2) (3) to the cover connecting portion 32 at both ends thereof. By means of a pile hammer housing. Since the lid connection 32 is functionally superior in designing for attachment and detachment, a hole is formed in the edge of the lid 31, a bolt or a pin is inserted into the hole, and then the lid 31 is piled into a hammer housing. Structured to couple to. On the other hand, the cover part 31 may be made of a single layer (that is, the structure of the "c" shape), but it is more useful to prevent noise is composed of a multi-layer as shown in FIG.

Since the function of the opening is to freely absorb and discharge air, it is not possible to completely seal it by the cover part 31, and thus, a plurality of air holes 33 must be provided, and in the case of a multilayer, the air holes per layer. 33 is provided. At this time, the air holes 33 are staggered with each other so that noise generated in the process may be reduced in the process of being transferred to the medium. On the other hand, although not shown, the suction material may be attached to the inner space between the layers within a range that does not interfere with the air flow inside the cover.

8 schematically shows an internal configuration viewed from the side of the noise reduction device of this embodiment.

Since the other function of the opening 3 serves to indicate the position of the inside of the ram 5 which moves up and down through the ram shaft 4 to the outside, the opening 3 is closed by the cover 30 to prevent noise. Even so, the function of such an opening needs to be protected as it is. The ram level gauge 34 is configured for this purpose, and one end of the level gauge 34 of the ram is connected to the upper part of the ram 5 and the shock absorbing spring 35. The position change according to the vertical movement of the ram is transmitted to the ram level gauge 34 as it is, the RAM level gauge 34 is moved up and down along the level gauge guide configured in the center of the cover 30. The level gauge, which is exposed to the outside and moves up and down, allows the user to grasp the operation of the ram.

9 is a front view of the noise reduction device of this embodiment. Through this, it is possible to understand the configuration of the air holes 33 and the level gauge guide part 36 in more detail. The level gauge guide portion 36 is vertically opened in the center of the cover 30 so that the level gauge 34, which is connected to the ram 5, moves up and down through the opened guide portion. In the guide part, a numerical value for grasping the level of the ram is described in advance.

The above embodiments are only intended to illustrate the present invention, the scope of protection of the present invention is not limited by these embodiments.

According to the present invention described above, there is an advantage to innovatively reduce the huge noise generated when the pile is installed into the ground by the pile hammer.

In addition, as the noise is significantly reduced, there is an effect that the advantages of the type method is further enhanced. In other words, the type method is recognized as an excellent method in the construction, economical, reliability, etc., but was difficult to be adopted during the actual construction, the present invention has made an excellent contribution to solving these problems. Of course, the present invention can reduce the frequency of complaints due to noise generation, thus avoiding unnecessary disputes caused by foundation work.

In addition, since the noise can be reduced while preserving the function of the opening formed in the pile hammer housing, there is an advantage of further improving efficiency.

In addition, the unique effects generated by the unique configuration of the present invention can be easily estimated in the range described in the configuration of the invention, the effect of the present invention is not only the matters described in the embodiments and claims of the invention described above, these It is noted that the scope will be encompassed by a wider range of potential effects that may occur within a range that can easily be derived from, and potential advantages that contribute to industrial development.

Claims (4)

In a pile hammer for inserting a pile into the ground, a device for reducing noise generated by the operation of the pile hammer: A lid covering an opening formed in the pile hammer, the lid portion being connected to the pile hammer housing, the lid portion including a plurality of air holes leading or sucking the air; And Noise reduction device of the pile hammer, characterized in that made of a lid connecting portion for attaching and connecting the lid housing to the pile hammer housing. The method of claim 1, A level gauge guide part of the ram which is open to a central portion of the cover part; And And a level gauge which moves up and down along the level gauge guide part in accordance with the up and down motion of the ram, one end of which is connected to the upper part of the ram through a drop impact relief spring. The method of claim 1, A noise reduction device for a pile hammer, further comprising a sound absorbing material inside the cover part. The method of claim 1, The cover connecting portion, for detachable A noise reduction device for a pile hammer, characterized in that a hole is formed in the edge of the lid portion, a bolt or a pin is inserted into the hole, and the lid portion is coupled to the pile hammer housing.

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