Pipe fastening clamp device

Abstract

To provide a clamping device that enables a worker to easily fasten a pipe manually without using a machine. [Solution] A pipe fastening clamp device for fastening multiple pipes (26, 30) together comprises a first clamp (108) for receiving one of the pipes, a first holding part (120) for fixing the first clamp to one of the pipes, a first buckle member (140) for fixing one of the pipes to the first clamp while the first clamp has received the pipe, a second clamp (208) for receiving the other pipe, a second holding part (220) for fixing the second clamp to the other pipe, a second buckle member (240) for fixing the other pipe to the second clamp while the second clamp has received the other pipe, and a connecting member (300) for connecting the first clamp and the second clamp.

Description

[Technical Field]

[0001] This invention relates to a pipe fastening clamp device for fastening multiple single-tube pipes together, and in particular to a pipe fastening clamp device that can be easily fastened together by hand by workers without the use of machinery, and is suitable for use when assembling temporary fences at construction sites or track protection nets used in railway construction. [Background technology]

[0002] Conventionally, temporary railroad protection nets (fences to protect workers from trains when working alongside the tracks) used in railway construction work have been constructed by assembling single-wall pipes (simply referred to as pipes). Steel clamps are used to fasten the single-wall pipes together. Examples of steel clamps include orthogonal clamps and universal clamps, as described in Patent Documents 1 to 5. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-133457 [Patent Document 2] Utility Model Registration No. 3200105 [Patent Document 3] Utility Model Registration No. 3225284 [Patent Document 4] Patent Publication No. 2021-95920 [Patent Document 5] Patent Publication No. 2021-46665 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the past, screws were used to fasten the clamp to the pipe, which required the use of a machine such as an impact driver to fasten the clamp to the pipe, which not only required machinery but also took time to complete the fastening process.

[0005] The present invention was made to solve the above-mentioned conventional problems, and its objective is to enable workers to easily fasten pipes manually without using machines such as impact drivers. [Means for solving the problem]

[0006] The present invention solves the above-mentioned problems by providing a pipe fastening clamp device for fastening multiple pipes together, comprising: a first clamp for receiving one of the pipes; a first holding member for securing the first clamp to the one of the pipes; a first buckle member for securing the one of the pipes to the first clamp while the one of the pipes is received in the first clamp; a second clamp for receiving the other of the pipes; a second holding member for securing the second clamp to the other of the pipes; a second buckle member for securing the other of the pipes to the second clamp while the other of the pipes is received in the second clamp; and a connecting member for connecting the first clamp and the second clamp.

[0007] Here, the connecting member can connect the first clamp and the second clamp at a predetermined fixed angle.

[0008] The connecting member can connect the first clamp and the second clamp at any angle. [Effects of the Invention]

[0009] According to this invention, the worker can easily fasten the pipes manually without using a machine such as an impact driver. [Brief explanation of the drawings]

[0010] [Figure 1] (A) Front view and (B) side view showing the configuration of an example of a railway protection network [Figure 2] FIG. 1 is a perspective view showing the fastening state of the orthogonal clamp according to the first embodiment of the present invention; [Figure 3] (A) Plan view and (B) side view of the first embodiment [Figure 4] FIG. 1 is an exploded perspective view showing the configuration of a clamp alone according to a first embodiment; [Figure 5] (A) Perspective view from diagonally upper right and (B) Perspective view from diagonally upper left showing the assembled state [Figure 6] Flowchart showing the work procedure for fastening pipes [Figure 7] FIG. 10 is a perspective view showing the fastened state of the flexible clamp according to the second embodiment of the present invention; [Figure 8] (A) Plan view, (B) Front view, and (C) Side view of the second embodiment [Figure 9] A cross-sectional view taken along line IX-IX in FIG. 8(A). DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the contents described in the following embodiments. Furthermore, the components in the embodiments described below include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the components disclosed in the embodiments described below may be appropriately combined or appropriately selected for use.

[0012] An example of a track protection net 20 is shown in Figures 1(A) (front view) and (B) (side view). An aboveground vertical pipe 26 is fixed parallel to an underground vertical pipe 22 driven into the ground 10 with a flexible clamp 24 (see Figure 1(B)). A horizontal pipe 30 is fixed perpendicular to the aboveground vertical pipe 26 with an orthogonal clamp 28. Furthermore, a supporting vertical pipe 32 is buried in the ground on the back side (right side of Figure 1(B)). A supporting horizontal pipe 34 is fixed perpendicular to the buried supporting vertical pipe 32 with an orthogonal clamp 28. A supporting diagonal pipe 38 is also fixed diagonally with a flexible clamp 36. A net 40 for protecting workers is then attached to the aboveground vertical pipe 26 and horizontal pipe 30.

[0013] The orthogonal clamp 100 according to the first embodiment of the present invention for assembling pipes (e.g., vertical pipes (vertical base) 26 and horizontal pipes (horizontal base) 30) that constitute the track protection net 20 as illustrated in Figure 1 has one clamp (referred to as the first clamp) 108 fastened to one pipe (e.g., vertical pipe 26) and another clamp (referred to as the second clamp) 208 fastened to the other pipe (e.g., horizontal pipe 30), as shown in Figure 2 (oblique view), Figure 3(A) plan view, and Figure 3(B) side view.

[0014] Each clamp 108, 208 mainly comprises first and second clamp bodies 110, 210, each of which has a two-part structure and is U-shaped and made of, for example, plastic; first and second retaining portions 120, 220 for securing the first and second clamp bodies 110, 210 to, for example, the vertical pipe 26 and the horizontal pipe 30, respectively; and first and second buckle portions 140, 240 for fastening the first and second clamp bodies 110, 210 to, for example, the vertical pipe 26 and the horizontal pipe 30, respectively, which are used, for example, when securing ski boots to a skier's ankles.

[0015] As shown in detail in the exploded perspective view of Figure 4, the perspective view seen diagonally from the upper right in Figure 5(A), and the perspective view seen diagonally from the upper left in Figure 5(B), one of the first and second clamp bodies 110, for example, the first clamp body 110, has a buckle hooking projection 110A formed at the tip of one side of the U-shape (the left side in Figure 4), a hinge portion 110B formed on the other side of the U-shape (the right side in Figure 4), anti-slip projections 110C formed on both inner surfaces of the U-shape, a rivet hole 110D formed on one side of the U-shape (the left side in Figure 4), four rivet holes 110E formed at the vertices of a square in the center, and a pivot pin hole 110F formed in the center of the center.

[0016] As shown in detail in Figure 4, the first and second retaining portions 120, 220, for example, the first retaining portion 120, are configured to include a retaining member 122 having anti-slip irregularities 122A formed on the pipe side (right side of Figure 4), a plate nut 124 having a tapped hole 124A formed therein, a U-shaped cover 126, for example, a blind rivet (hereinafter also simply referred to as a rivet) 128 for fixing the cover 126 to the clamp body 110 using the rivet hole 110D of the clamp body 110, and a butterfly bolt 130 having a threaded portion 130A that screws into the tapped hole 124A of the plate nut 124.

[0017] 4, the first and second buckle portions 140, 240, for example, the first buckle portion 140, includes a buckle A142 having a handle 142A formed therein and rotatably supported on the hinge portion 110B of the clamp body 110 by a shorter hinge pin 144 inserted into the hole 142B closest to the tip of two holes 142B, 142C formed on the opposite side, and a buckle B146 having a pin 146A fixed to one end (the left end in the figure) and rotatably connected to the buckle A142 by a longer hinge pin 148 inserted into the hole 142C closer to the center. In the figure, reference numeral 150 denotes a split pin for fixing the hinge pin 144, 152 denotes a split pin for fixing the hinge pin 148, and 154 denotes a washer inserted between the buckle A142 and the buckle B146.

[0018] The second clamp body 210 has a shape similar to that of the first clamp body 110 shown in Figures 4 and 5, and has a second holding portion 220 similar to the first holding portion 120 of the first clamp body 110, and a second buckle portion 240 similar to the first buckle portion 140, so corresponding parts are given reference numerals in the 200 series and detailed descriptions are omitted.

[0019] The first and second clamp bodies 110, 210 as shown in FIGS. 4 and 5 are fastened together perpendicularly with rivets 300 using the rivet holes 110E, 210E as shown in FIGS.

[0020] This clamp fixed in the orthogonal state can be used, for example, as the orthogonal clamp 28 of the railway protection net 20 shown in FIG.

[0021] The procedure for fastening the pipes will be described below with reference to FIG.

[0022] First, in step 1000, the buckle portion 140 of one of the clamps (for example, the first clamp 108) is opened.

[0023] Specifically, the handle 142A of the buckle A142 is pulled toward the front in FIG. 5(A) to open the buckle A142 and the buckle B146.

[0024] Next, in step 1010, one of the pipes (for example, vertical pipe 26) is clamped with the open clamp to set the pipe.

[0025] Next, in step 1020, the buckle portion 140 of the clamp is closed and the butterfly bolt 130 is tightened to fix one of the clamps 108 to one of the pipes (vertical pipe 26 in the figure) as shown in Figure 2. At this time, the clamp is firmly fixed to the pipe by the anti-slip projections 110C of the clamp body 110 and the irregularities 122A of the holding member 122.

[0026] Next, in step 1030, the buckle portion 240 of the other clamp (for example, the second clamp 208) is opened in the same manner as in step 1000.

[0027] Next, in step 1040, similarly to step 1010, the other clamp 208 is set on the other pipe (horizontal pipe 30 in the figure).

[0028] Next, in step 1050, similarly to step 1020, the other clamp 208 is fixed to the other pipe (horizontal pipe 30 in the figure).

[0029] As a result, both pipes 26, 30 are clamped together by the orthogonal clamp 100, as shown in FIG.

[0030] To release the clamp from the pipe, simply follow the steps in Figure 6 in reverse.

[0031] In the first embodiment, by changing the fixing angle by the rivet 300 by 90°, it is also possible to use it as a parallel clamp for fixing pipes in parallel with each other.

[0032] This clamp fixed in a parallel state can be used, for example, as the flexible clamp 24 of the track protection net 20 shown in FIG.

[0033] Next, a flexible clamp 400 according to a second embodiment of the present invention will be described with reference to FIGS.

[0034] 4 and 5, the first clamp 108 and the second clamp 208 can be fixed at any angle using the pivot pin holes 110F and 210F and a hinge pin 410. In the figure, 412 is a split pin to prevent the hinge pin 410 from coming off.

[0035] 7 to 9 show a state in which the clamp is used as a parallel clamp, but this second embodiment can fasten pipes at any angle, including perpendicular.

[0036] Therefore, the flexible clamp 400 of the second embodiment can be used as the flexible clamp 24 or 36 of the railway protection net 20 shown in FIG. 1, for example.

[0037] When constructing temporary fences, it is essential to ensure structural strength, such as preventing tipping, by erecting the vertical pipes (building site) perpendicular to the ground and the horizontal pipes (horizontal site) horizontally. As a result, many components are required to intersect at 90° angles, making the orthogonal clamp of the first embodiment useful. The orthogonal clamp eliminates the need to adjust the adjustable clamp, as in the second embodiment, to a 90° angle, making installation simple. Furthermore, by rotating the clamp, fatigue failure and other issues do not occur during use, making it less likely to break.

[0038] In the above embodiment, the clamp body is made of plastic, but the material of the clamp body is not limited to this. The fastener is not limited to a blind rivet.

[0039] Furthermore, the application of this invention is not limited to railway protection nets, but can also be used for temporary fences at construction sites, etc. [Explanation of symbols]

[0040] 10...ground 20…Line protection net 22, 26, 32...Vertical pipes 24, 36...Free clamp 28...Orthogonal clamp 30...Horizontal pipe 38...Diagonal pipe 40...net 100...Orthogonal clamp 108, 208...Clamp 110, 210...Clamp body 110A, 210A... Buckle hook protrusion 110B, 210B...hinge part 110C, 210C...anti-slip protrusions 110D, 110E, 210D, 210E...Rivet holes 110F, 210F...Pivot pin hole 120, 220...Retainer 122, 222...Retaining member 124, 224...plate nuts 126, 226…cover 128, 228...(blind) rivets 130, 230...Wing bolt 140, 240...Buckle section 142, 242...Buckle A 152, 252...Buckle B 300...(blind) rivets 400...Free clamp 410...hinge pin

Claims

1. A pipe fastening clamp device for fastening a plurality of pipes together, a first clamp for receiving one of the pipes; a first clamping portion for fixing the first clamp to the one pipe; a first buckle member for fixing the one pipe to the first clamp in a state in which the one pipe is received in the first clamp; a second clamp for receiving the other pipe; a second clamping portion for fixing the second clamp to the other pipe; a second buckle member for fixing the other pipe to the second clamp in a state in which the other pipe is received in the second clamp; a connecting member for connecting the first clamp and the second clamp; A pipe fastening clamp device comprising:

2. 2. The pipe fastening clamp device according to claim 1, wherein the connecting member connects the first clamp and the second clamp at a predetermined fixed angle.

3. 2. The pipe fastening clamp device according to claim 1, wherein the connecting member enables the first clamp and the second clamp to be connected at any angle.

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