JP2000319883A - Optical reflector fixing apparatus for tamping hammer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical reflector fixing apparatus for a tamping hammer, which is resistant to salt pollution of seawater and facilitates assemblage and maintenance thereof, by forming optical reflector fitting portions which each have an abutting surface in which an optical reflector is fitted, and constituting the apparatus of upper and lower elastic support bodies which are interposed between a pair of upper and lower flanges. SOLUTION: An optical reflector fixing apparatus B for a tamping hammer is interposed between a pair of flanges 11, 11' and fixed to the same, and comprises a prism which is an optical reflector, upper and lower elastic support bodies 15, 16, and protective metal fittings 17, 17. A fitting hole is arranged so that a lower half portion of the prism is fitted in intimate contact therewith and an optical reflector fitting portion 21 is defined and formed. The upper and lower elastic support bodies 15, 16 each having the protective metal fitting 17 stuck thereto are interposed between the flanges 11, 11', and then they are screw-fixed to the flanges 11, 11', by means of bolts 12a and nuts 12b. Thus, the optical reflector fixing apparatus B for the tamping hammer can be rigidly fixed between the flanges 11, 11'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tamping hammer for tamping rubble laid on the bottom of a seabed or the like, and a light reflector for a tamping hammer for fixing a light reflector such as a prism used for measuring the tamping height. The present invention relates to a body fixing device.

[0002]

2. Description of the Related Art As a conventional light reflector fixing device for a tamping hammer, there is a device shown in FIGS.

The conventional light reflector fixing device a for a tamping hammer includes a prism 1 caused by an impact caused by tamping.
In order to prevent breakage and maintain a fixed mounting posture, the support 2 for supporting the prism 1 includes a plurality of wires using the flange-side mounting plate 3 and the support-side mounting plate 4 as aircraft components. A pair of upper and lower flanges 8, 8 projecting from the main body 7a of the tamping hammer 7 through the mounting members 6, 6 are arranged between the mounting members 6, 6 connected by the springs 5,.
It has a structure that is elastically held in between, and a plurality of sets of these are arranged around the main body 7a at required angular intervals.

[0004]

However, the above-mentioned conventional light reflector fixing device a has a large number of expensive aircraft as described above in order to prevent the prism 1 from being damaged and to keep the mounting posture constant. Wire spring for parts 5
.. Are diverted, the cost is high, and the assembly and maintenance are complicated due to the large number of parts constituting the device.

Further, since the wire springs 5 are easily corroded and damaged by salt damage, they lower the mounting accuracy of the prism 1 and interrupt the tamping operation.

Accordingly, the present invention provides an inexpensive light reflector fixing device for a tamping hammer, which is less susceptible to salt damage by seawater, has a simple configuration with a reduced number of parts so that assembly and maintenance can be performed easily. What you want to do.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a light reflector fixing apparatus for a tamping hammer.
A light reflector fitting portion 21 for fitting the light reflector 14 is formed on the upper and lower elastic supports 15, 16 inserted between the pair of upper and lower flanges 11, 11 '.

The upper and lower elastic supports 15, 16 can be made of an elastic material such as rubber. The light reflector fitting portion 21 has a fitting hole 18 formed on the contact surface 15 ′ of the upper elastic support 15 for fitting the upper half of the light reflector 14.
Formed on the contact surface 16 ′ of the lower elastic support 16,
And a fitting hole 20 into which the lower half of the light reflector 14 is fitted.

The upper and lower elastic supports 15 and 16 are preferably provided with a light incident window 23 between the light receiving surfaces 15d and 16d and the light reflector fitting portion 21. The upper and lower elastic supports 15 and 16 are preferably formed so that their contact surfaces 15 ′ and 16 ′ are formed into a concave and convex cross-sectional shape in which they are fitted to each other, and are provided on the outer peripheral surface 9 a of the tamping hammer body 9. It is good to fix to a pair of upper and lower flanges 11 and 11 'so that it may not contact.

[0010] Further, a protection bracket 17 is formed by bending a protection piece 17b covering portions of the light receiving surfaces 15d and 16d of the upper and lower elastic supports 15 and 16 except for the light entrance window hole 23. You may.

[0011]

Embodiments of the present invention will be described with reference to the drawings. A is a tamping hammer,
As shown in FIG. 1, the main body 9 is formed by connecting steel pipes.
And a pair of upper and lower flanges 11 and 11 'for fixing a plurality of the light reflector fixing devices B for tamping hammer of the present invention, and an outer peripheral surface of the upper end of the main body 9. Projecting parallel to each other.

As shown in FIGS. 1 and 2, the upper and lower flanges 11 and 11 'are required for each fixing position of the light reflector fixing device B for a tamping hammer of the present invention, that is, with respect to the main body 9 as a center. Arranged at the vertices of the square at every angular interval of
.. Are formed. In addition, 1
2a is a bolt loosely inserted into the bolt insertion hole 11a, 12b is a nut which can be screwed into the bolt 12a, 13 ... reinforces the upper flange 11 and the lower flange 11 ', respectively. The ribs are arranged.

The light reflector fixing device B for a tamping hammer of the present invention is adapted to be inserted and fixed between the pair of flanges 11 and 11 ', and is a prism 1 which is a light reflector.
4, upper and lower elastic supports 15, 16 and protective fittings 17,
Consists of seventeen.

The prism 14 is shown in FIGS.
As shown in (B), three cut surfaces 14a, 1 at 120 ° intervals about the axis O and at a required inclination angle are provided.
4b and 14c are formed in a cylindrical shape at one end.

The upper elastic support 15 has, for example, a hardness of 35.
And an elastic material such as sulfide rubber, which is provided on the lower surface in contact with the lower elastic support 16 and on the left and right sides of the main contact surface 15a as shown in FIGS. Face 15
It has a substantially rectangular parallelepiped shape having a downwardly projecting cross section in which an abutment surface 15 'formed with b and 15b is formed.

A fitting hole 18 for fitting the upper half of the prism 14 is provided at a central portion of the main contact surface 15a, and a bolt insertion of the upper flange 11 is provided for the sub contact surfaces 15b, 15b. Specifically, at the position facing the holes 11a,.
When fixed to the lower flanges 11, 11 ', between the front side surface 15d, which is the light receiving surface, and the front edge 11b of the upper flange 11, and the outer peripheral surface 9a of the tamping hammer A body,
Bolt insertion holes 15e are formed so as to form gaps α and β between the rear side surface 15c and the rear side surface 15c formed with substantially the same curvature.

The fitting hole 18 is fitted to the upper half of the prism 14 which is separated by an II line passing through the axis O shown in FIGS. The cut surfaces 14a, 14b are formed to have inclined surfaces 18a, 18a in contact with and in close contact with the cut surfaces 14a, 14b. In addition, 18b is an opening.

Reference numeral 19 denotes a window hole forming groove formed between the fitting hole 18 and the front side surface 15d. The window hole forming groove has a semicircular cross section and the inside diameter increases from the fitting hole 18 to the front side surface 15d. Is formed.

The elastic material has a hardness of 20 ° to 40 °.
About 35 ° hardness can be used.
Is preferable in that it has an elastic force capable of absorbing and relaxing the impact caused by tamping, and is easy to process and handle. The material is not limited to the above-mentioned sulfide rubber as long as it has an elastic force capable of absorbing and relaxing the impact caused by tamping.

The lower elastic support 16 is made of an elastic material such as sulfide rubber having a hardness of 35 °, like the upper elastic support 15, as shown in FIGS.
The main contact surface 1 is provided on the upper surface that contacts the upper elastic support 15.
It has a substantially rectangular parallelepiped shape with a concave cross section in which a contact surface 16 'is formed by arranging sub contact surfaces 16b, 16b on both left and right sides of 6a.

A fitting hole 20 for fitting the lower half of the prism 14 is formed in the center of the main contact surface 16a, and a fitting hole 20 for fitting the lower flange 11 'is formed in the sub contact surfaces 16b, 16b. Specifically, at a position facing the bolt insertion holes 11a,
When inserted and fixed to the upper and lower flanges 11 and 11 ', the front surface 16d, which is the light receiving surface, and the front edge 1 of the lower flange 11'.
1'b, and between the rear side surface 16c, the outer peripheral surface 9a of the tamping hammer A body facing the rear side surface 16c, and the rear side surface 16c formed with substantially the same curvature as this, gaps α and β are formed, respectively. The bolt insertion holes 16e are formed.

The fitting hole 20 faces the fitting hole 18 of the upper elastic support 15 so that the lower half of the prism 14 is fitted and tightly fitted, that is, as shown in FIG. The light reflector fitting portion 21 is provided so as to form a partition.

That is, the fitting hole 20 has a structure in which the prism resilient side walls 20b and 20b are inclined on both sides of the bottom wall 20a which is in close contact with the cut surface 14c of the prism 14. 20b, 20b
The opening 20c is formed so that the cut surfaces 14a and 14b of the prism 14 are in close contact with oblique lines 14a 'and 14b' defined by the intersection of the II line passing through the axis O and the cut surface 14c. From the bottom to the bottom wall 20a.

In other words, the prism pressure side walls 20b, 2
Reference numeral 0b is formed so as to generate an elastic pressure for elastically pressing the prism 14 pushed into the fitting hole 20 toward the bottom wall 20a.

Therefore, when the prism 14 is pushed into the fitting hole 20 so as to widen the opening 20c, the opening 20c elastically expands in accordance with the pushing, and the prism 14 is pushed into the fitting hole 20. Further, after the pressing, the prism 14 is elastically pressed from above by the prism pressing walls 20b and 20b and held.

Reference numeral 22 denotes a window hole forming groove continuously provided between the fitting hole 20 and the front side surface 16d.
5 has a semicircular cross section and an inner diameter extending from the fitting hole 20 to the front side surface 16d so as to define the light incident window hole 23 as shown in FIG. It is formed so as to be large.

The protective fittings 17 are provided on the upper elastic support 1.
5 and the upper flange 11 and the lower elastic support 16 and the lower flange 11 ′, respectively, are L-shaped, and they are the planar shapes of the upper and lower elastic supports 15 and 16. The front faces 15d, 1 of the upper and lower elastic supports 15, 16 are attached to the distal end of a horizontal piece 17a having substantially the same shape as that of FIG.
6d, protective piece 17 covering a portion except for light incident window hole 23
b and 17b are bent.

The protective pieces 17b, 17b may be subjected to a surface treatment so as not to irregularly reflect light emitted from the outside, or a coating or the like may be applied thereto. In addition, 17c ...
Bolt insertion holes 11a of upper and lower flanges 11, 11 '...
The bolt insertion hole is formed at a position opposed to.

After the adhesive is applied to the contact surfaces 15 ', 16' of the upper and lower elastic supports 15, 16, the prism 14 is pushed into the fitting hole 20 of the lower elastic support 16 and fitted. I do.

Contact surface 1 of upper and lower elastic supports 15 and 16
5 ', 16' are brought into contact with each other and adhered, and an adhesive is applied to the lower surface of the lower elastic support 16 and the upper surface of the upper elastic support 15, and then the horizontal pieces 17 of the protective fittings 17, 17 are applied.
a and 17a are adhered to the upper and lower elastic supports 15 and 16, respectively.

After bonding the protective fittings 17, 17 to the upper and lower elastic supports 15, 16 and inserting them between the flanges 11, 11 ', they are screwed and fixed with bolts 12a, nuts 12b. Thereby, as shown in FIGS. 1 and 2, the light reflector fixing device B for a tamping hammer of the present invention can be firmly fixed between the pair of flanges 11 and 11 '.

The impact caused by the tamping by the tamping hammer A is absorbed and mitigated by the upper and lower elastic supports 15 and 16, whereby the displacement of the prism 14 and its breakage can be prevented, and the prism 14 can be firmly held. . Further, the protective pieces 17b, 17b of the protective fittings 17, 17 are
Front side surfaces 15d, 16d of upper and lower elastic supports 15, 16
Will protect you.

The present invention is not limited to the above-described embodiment, but can be modified as follows, for example. In the above description, an example in which the upper and lower elastic supports are formed of a single sulfide rubber has been described. However, the upper and lower elastic supports are made of two different materials such as sulfide rubber and plastic. A bonded structure may be used. Specifically, for the upper elastic support, of the upper and lower two layers, the upper layer is formed of plastic,
The lower layer is formed of sulfide rubber, and the lower elastic support is formed of a plastic layer for the lower layer of the upper and lower layers, and the upper layer is formed of sulfide rubber.

[0034]

According to the first to seventh aspects of the present invention, the light reflector fitting portions for fitting the light reflectors are formed on the contact surfaces of each other, and are inserted between the upper and lower pair of flanges. In addition, since the upper and lower elastic supports are provided, the light reflector can be held in a constant posture even by an impact caused by tamping.

It is possible to provide a simple structure with a reduced number of parts so as to be less susceptible to salt damage by seawater, to facilitate assembly and maintenance, and to provide an inexpensive one.

In addition to the above-mentioned common effects obtained by the inventions of claims 1 to 7, the following effects can be obtained by the inventions of the respective claims. According to the invention described in claim 2,
Since the upper and lower elastic supports are made of an elastic material such as sulfide rubber, the processing is easy.

According to the fourth aspect of the present invention, since the upper and lower elastic supports are provided with the light incident window between the light receiving surface and the light reflector fitting portion. In addition, an external object does not directly contact the light reflector, so that the light reflector can be prevented from being stained or damaged.

According to the fifth aspect of the present invention, since the upper and lower elastic supports are formed in a concave-convex section in which their abutting surfaces are fitted to each other, the upper and lower elastic supports can also be subjected to an impact caused by tamping. In addition, no displacement occurs between the upper and lower elastic supports.

According to the sixth aspect of the present invention, the upper and lower elastic supports are attached to the flange so as not to come into contact with the outer peripheral surface of the tamping hammer body, so that the transmission of the shock accompanying the tamping is reduced. can do.

According to the seventh aspect of the present invention, the protective metal fitting is formed by bending the protective piece covering the light receiving surface of the upper and lower elastic supports except for the light incident window hole. The upper and lower elastic supports can be smoothly inserted between the pair of flanges, and the protection pieces can prevent the light receiving surfaces of the upper and lower elastic supports from being damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a tamping hammer in which a light reflector fixing device for a tamping hammer of the present invention is arranged, with a part thereof omitted.

FIG. 2 is an enlarged perspective view of the light reflector fixing device for a tamping hammer.

FIG. 3 is an exploded perspective view thereof.

FIG. 4 is a perspective view of a light reflector.

FIG. 5A is a rear view of a light reflector, and FIG. 5B is a side view thereof.

FIG. 6 is a bottom view of the upper elastic support.

FIG. 7 is a front view thereof.

FIG. 8 is a plan view of a lower elastic support.

FIG. 9 is a front view thereof.

FIG. 10 is a partial perspective view of a tamping hammer provided with a conventional light reflector fixing device for a tamping hammer.

FIG. 11 is an exploded perspective view of the light reflector fixing device for a tamping hammer.

[Explanation of symbols]

 9 Main body 11, 11 'Flange 14 Light reflector 15 Upper elastic support 15', 16 'Abutment surface 15d, 16d Front side 16 which is a light receiving surface 16 Lower elastic support 17 Protective fitting 17b Protective piece 18, 20 Fitting Hole 21 Light reflector fitting part 23 Light entrance window hole A Tamping hammer

Claims (7)

[Claims] 1. A light reflector fixing device for a tamping hammer for fixing a light reflector for measuring a tamping height between a pair of upper and lower flanges projecting from a tamping hammer. A light reflector fixing device for a tamping hammer, wherein a light reflector fitting portion for fitting a reflector is formed and an upper and lower elastic support is interposed between the pair of upper and lower flanges. 2. The light reflector fixing device for a tamping hammer according to claim 1, wherein the upper and lower elastic supports are formed of an elastic material such as rubber. 3. The light reflector fitting portion includes a fitting hole formed on a contact surface of the upper elastic support for fitting an upper half of the light reflector, and a contact between the lower elastic support. 3. A fitting hole formed in a surface, the fitting hole fitting a lower half of the light reflector.
The light reflector fixing device for a tamping hammer according to the above. 4. A light incident window hole is continuously provided between the light receiving surface and the light reflector fitting portion on the upper and lower elastic support members. Light reflector fixing device for tamping hammers. 5. The light reflector for a tamping hammer according to claim 1, wherein the upper and lower elastic supports are formed in a concave-convex section in which their contact surfaces are fitted to each other. Fixing device. 6. The tamping hammer according to claim 1, wherein the upper and lower elastic supports are fixed to a pair of upper and lower flanges so as not to contact the outer peripheral surface of the tamping hammer body. Light reflector fixing device. 7. A protective bracket formed by bending a protective piece covering a portion of the light receiving surface of the upper and lower elastic supports except for a light incident window hole. 7. The light reflector fixing device for a tamping hammer according to 5 or 6.