JPH0419115Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tail seal brush used to prevent backflow of grout and muddy water from the tail portion of a shield tunneling machine.

Conventional technology and problems For example, as the tail seal brush mentioned above,
-40500 is proposed. This tail seal brush requires two protective plates to be individually filled on one side and the other side of the brush material and then pushed into the thick U-shaped fitting, or the brush material must be inserted into the U-shaped fitting. Since the protective plate must be inserted individually after being pushed in, it takes a lot of assembly time, and the U-shaped mounting hardware and brush material are integrated with the two protective plates using a through bolt, but the protection until the bolt is inserted is not enough. The plate and brush material may not be properly positioned, resulting in lateral displacement or inclination.
Also, it is difficult to align the bolts with the bolt holes in the protection plate. In addition, two protective plates and brush materials of different lengths must be stored separately, which creates a management burden.

Structure of the invention The present invention is intended to improve the above-mentioned conventional product, and as a means for this purpose, the protection plates attached to each side of the brush material are made U-shaped to form a clip plate of a single plate structure, and The brush material is sandwiched between the clip plates to form an assembly of the brush material and the protection plate, and this is configured to be implanted and held within the U-shaped fitting.

Effect of the invention According to the invention, the brush material can be easily held using the clip effect of the clip plate.
By simply inserting the brush material, it is easy to install the protection plates on both sides relative to the brush material.

In addition, if the brush material is inserted into the clip plate in advance, it can be treated as a single component, and the assembled brush material and clip plate can be mounted and held in the U-shaped mounting bracket as is, making the assembly much simpler. make it a thing.

Examples of ideas Embodiments of the present invention will be described in detail below with reference to the drawings.

1 is a clip plate, 2 is a brush material, and 3 is a U-shaped mounting hardware.

As shown in the figure, the clip plate 1 is made by bending a single elastic steel plate into a U shape so that the opposing U-shaped curved plate pieces function as the clip plate. One clip plate of the clip plate 1 is a protection plate 4 attached to one side of the brush material 2, and the other clip plate is a protection plate 5 attached to the other side of the brush material 2.
shall be.

Brush material 2 is a bristle material (wire brush) with core wire 6
A short so-called channel-shaped brush is used, which is folded in two across the body and held by caulking the bent base with a U-shaped fastening metal fitting 7.

The brush material 2 is pushed into the clip plate 1 and held there. A plurality of brush materials 2 or a single brush material 2 is used, and as shown in the figure, a U-shaped fastening hardware 7 is pushed into the bottom of the clip plate 1, and a protection plate 4 is attached to one side of the clip plate 1, and a protection plate 5 is attached to the other side to protect both sides. The brush material 2 is firmly held by the clip effect of the plates 4 and 5,
The bristles of the brush material are exposed from the free ends of the protection plates 4 and 5. The brush materials 2 are arranged side by side in close contact with the inner bottom of the clip plate 1 as shown in FIG. 1, or are arranged side by side with their positions slightly shifted toward the ends of the brushes as shown in FIG. When a plurality of brush materials 2 are arranged side by side with their positions shifted as described above, the offset dimensions are set so that adjacent fastening hardware 7 are located at positions where they do not interfere with each other, as shown in FIG. That is, one adjacent fastening hardware 7 is under the bottom surface of the other fastening hardware 7, and the other fastening hardware 7 is above the mouth edge of the same fastening hardware 7. Thereby, by pressing the protection plates 4 and 5 from the outside, the fastening hardware 7 can be compressed and flattened until they partially overlap vertically (up and down in the direction of the bristles). Further, the thickness can be freely adjusted by changing the degree of compression, such as by holding the material with a simple vertical displacement as shown in the figure.

Depending on the implementation, when the brush material 2 is held between the clip plate 1, a mesh-like sheet 8 is inserted into the brush material 2. This mesh-like sheet 8 has the function of preventing grease from leaking and preventing fine sand from entering, which also serves as rust prevention for the brush material.

As a means for inserting the mesh-like sheet 8, a second
As shown in FIG.
It is folded from the side surface to the bottom surface of the brush material 7, and is held between the two brush materials 2 and 2, and is used for clamping on the clip plate 1. At this time, the mesh-like sheet 8 may be attached and supported by the brush material fastening hardware 7 with an adhesive. As another example of the means for inserting the mesh-like sheet 8, as shown in FIG. The hair material is folded in half, straddled and caulked with a fastening hardware 7. As a result, a mesh-integrated brush material having a mesh-like sheet 8 in the core can be formed, and the effort of inserting the same sheet 8 when clamping it to the clip plate 1 can be saved, and incorrect insertion can also be avoided. It can be prevented. In this case, the ends of the mesh-like sheets 8 are preferably made to protrude from stepped portions formed with different hair lengths as shown in the figure, to facilitate the application of grease to the sheets 8.

Further, the protective plates 4 and 5 are bent in the same direction at the portions extending outside the U-shaped mounting hardware 3, and the bent portions 9 are bent deeply as shown in FIG. to enhance the clipping effect. The bent portion 9 is formed after the brush material 2 and the mesh sheet 8 are held between the clip plate 1, or the clip plate 1 with the bent portion 9 is prepared in advance, and the brush material 2 and the mesh sheet 8 are is then pushed in and held. As shown in FIG. 8, the clip plate 1
In order to enhance the effect of capturing the brush material, the brush material 2 may be bound in advance with a binding wire 10 and then attached to the clip plate 1.

Furthermore, the protective plates 4 and 5 of the clip plate 1 have wide portions 11 and 12 formed at their tips, and the wide portions 11 and 12 support the brush material 2 that expands at the tip to prevent the bristles from falling. . In this case, the wide portion may be formed only on one of the protection plates 5 that supports the brush side with long bristles. Similar to the formation of the wide portions 11 and 12 of the protective plates 4 and 5, a wide portion 15 is also formed at the tip of the mesh-like sheet 8.
form.

Clip plate 1 and brush material 2 thus formed
The assembly is implanted and held in the U-shaped fitting 3.
The bolt 13 (including the pin) is used as the implantation means.
It is passed through from one side of the shaped fitting 3 to the other side, and the tip is welded or caulked. In order to insert this bolt, mounting holes 14 are previously drilled in the protective plates 4 and 5 of the clip plate 1 at corresponding positions. The U-shaped mounting hardware 3 has one end long and is fixed by welding or the like to the inner peripheral surface of the cylindrical tail of the shield body 16, as shown in FIG. Protective plates 4 and 5 are arranged in an annular manner on the circumferential surface.
The bristles of the brush material 2, which are inclined toward the inner diameter side by bending at the waist, are arranged so as to be in close contact with the outer circumferential surface of the segment.

Effects of the invention As explained above, the present invention eliminates the assembly effort and complexity of conventional products in which the brush material and two protective plates are separated and held by the U-shaped mounting hardware. can be easily held using the clip effect of the clip plate, and the relative position of the pair of protective plates to the brush material can be easily determined by simply inserting the brush material. can be handled as a single component, and the combined product can be used as is for mounting on the U-shaped fitting, making assembly extremely simple.
In addition, the U-shaped mounting hardware, protection plate, and brush material are properly aligned, and the U-shaped mounting hardware that passes through the bolt has good alignment with the mounting hole in the clip plate, making it easy to see through the bolt. Ru.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a tail seal brush showing an embodiment of the present invention, Figure 2A is a sectional view of a tail seal brush showing another example, Figure B is a plan view of the same, and Figure 3 is a perspective view of a clip plate. Figure 4A is a cross-sectional view of the U-shaped hardware, Figure B is a plan view of the same, Figure 5A is a cross-sectional view of the clip plate, Figure B is a plan view of the same, Figure 6A is a cross-sectional view of the brush material, B is a plan view of the same, FIG. 7 is a side view of the mesh-like sheet, B is a plan view of the same, FIG. 8 is a perspective view showing an example of bundling brush materials, and FIG. 9 is an example of inserting a mesh-like sheet. A perspective sectional view, FIG. 10 is a sectional view showing an example of attachment of a tail seal brush. 1...Clip plate, 2...Brush material, 3...U
Shape mounting hardware, 4, 5...Protection plate, 11, 12...
Wide part.

Claims (1)

[Scope of utility model registration request] Protective plates attached to both sides of the brush material are U-shaped to form a clip plate, the brush material is clamped to the clip plate, and the brush clamping clip plate is held integrally within the U-shaped mounting hardware. Tail seal brush for shield tunneling machine.