Trough Collision Device

Abstract

To provide a trough roller device that allows the cable to be laid (guided) with the cover removed beforehand, and eliminates the need to remove the cable from the trough when placing (dropping) the cable into the trough. [Solution] The present invention is a trough roller device for guiding a cable in the extending direction of a trough, comprising: a lower roller that supports the weight of the cable; a lower roller pivot support that pivotally supports the lower roller so as to be rotatable around an axis and has a pair of outwardly extending portions that extend outward beyond each end of the lower roller; an arch portion that connects the pair of outwardly extending portions to each other and extends above the lower roller so as to avoid the trajectory of the cable; and a fixing mechanism that fixes the arch portion to the trough, wherein one of the outwardly extending portions can be released from the connection with the arch portion, and the other of the outwardly extending portion can be rotated relative to the arch portion.

Description

Technical Field

[0001] The present invention relates to a trough roller device for guiding a cable in the extending direction of a trough.

Background Art

[0002] In order to extend a cable, a U-shaped groove called a trough is widely used. The trough is generally made of concrete. After the cable is extended inside the trough, usually, a lid is placed on the top of the trough. The lid is also usually made of concrete and has a corresponding weight. The length of the trough is usually about several hundred meters, but it may be longer. The lid is formed by being divided for one trough, the length of one lid is, for example, about 50 cm, and the weight of one lid is, for example, about 26 kg.

[0003] Conventionally, when extending a cable, a lid was placed on the trough, and a device called a "placement roller" was arranged on the lid (the device was simply a device that supported a driven roller). Then, after using a large number of such devices on the lid of the trough to extend (guide) the cable, the device and the lid were sequentially removed, and the cable was stored in the trough.

[0004] On the other hand, when feeding out the cable, by using a four-sided roller device in combination, the floating of the cable can be effectively prevented. The four-sided roller device is a device in which four rollers are arranged on the four sides of up, down, left, and right. Regarding the four-sided roller device, the applicant of this application discloses the invention of Patent Document 1 (an openable and closable four-sided roller device).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the conventional laying method described above, it was necessary to cover the cable with a lid before laying (guiding) it, and then remove the lid sequentially when placing the cable inside the trough.

[0007] The inventor of this invention focused on the fact that if the cable could be laid (guided) with the cover removed beforehand, the work of removing the cover could be omitted. As mentioned above, one cover weighs about 26 kg, but the work of sequentially removing the covers from the entire trough is quite hard work. Therefore, if this work can be omitted, the work efficiency will be significantly improved.

[0008] Prior to the present invention, the inventor developed a trough roller device that directly fixes the driven roller (or its pivot point) to the trough by applying a bracing force between the pivot point of the driven roller and the side wall of the trough (see Figure 13).

[0009] This type of trough guide device allows cables to be laid (guided) with the cover removed beforehand.

[0010] However, when inserting (dropping) the cable into the trough, it was necessary to release the aforementioned tension and remove the entire trough roller device from the trough.

[0011] The inventor of this invention diligently studied how to improve the trough puller device so that it would not be necessary to remove the entire trough puller device from the trough when placing (dropping) a cable into the trough, and arrived at the present invention.

[0012] The present invention was conceived based on the above findings. The object of the present invention is to provide a trough guide device that allows a cable to be laid (guided) with the cover removed in advance, and that does not require the cable to be removed from the trough when it is placed (dropped) into the trough. [Means for solving the problem]

[0013] The present invention relates to a trough roller device for guiding a cable in the extending direction of a trough, comprising: a lower roller that supports the weight of the cable; a lower roller pivot support that pivotally supports the lower roller so as to be rotatable about an axis and has a pair of outwardly extending portions that extend outward beyond each end of the lower roller; an arch portion that connects the pair of outwardly extending portions to each other and extends above the lower roller so as to avoid the trajectory of the cable; and a fixing mechanism that fixes the arch portion to the trough, wherein one of the outwardly extending portions can be released from the arch portion, and the other outwardly extending portion can rotate relative to the arch portion.

[0014] According to the present invention, the cable can be laid (guided) with the cover removed beforehand. When the cable is placed (dropped) into the trough, one of the outwardly extending parts is released from the arch part, and the other outwardly extending part rotates relative to the arch part, thereby allowing the lower roller to be moved away from the position below the cable. Therefore, it is not necessary to remove the entire trough roller device from the trough (such removal work can be done later at a leisurely pace (together with other trough roller devices)).

[0015] In the present invention, it is preferable that the fixing mechanism includes a bracing mechanism that fixes the arch portion between the side walls of the trough by applying a bracing force between the arch portion and the side wall of the trough.

[0016] This feature allows the arch section to be stably fixed to the trough.

[0017] In this case, it is even more preferable that the bracing mechanism includes a side wall contact portion that abuts against one side wall of the trough, a bracing rod portion that extends retractably between the arch portion and the side wall contact portion, and an extension / retraction operating portion that extends or retracts the bracing rod portion.

[0018] According to this feature, the arch part can be fixed to the trough more stably and more easily.

[0019] For example, the telescopic operation part is a rotary handle.

[0020] According to this feature, it is easy for an operator to change the tension force of the tension mechanism.

[0021] Also, it is preferable that a side wall abutting part that abuts against the side wall on the other side of the trough is provided on the arch part.

[0022] According to this feature, the arch part can be fixed to the trough more stably and more easily.

[0023] Also, it is preferable that the arch part pivotally supports an upper side roller so as to face the upper side of the lower side roller.

[0024] According to this feature, the cable can be extended (guided) so as to sandwich the cable vertically, and the behavior of the cable during the extension (guidance) operation becomes more stable.

[0025] Furthermore, in this case, it is preferable that the arch part pivotally supports a left side roller and a right side roller so as to form a square or a rectangle together with the lower side roller and the upper side roller in a front view.

[0026] According to this feature, a stable cable guiding action as a so-called four-sided roller device can be obtained.

[0027] Furthermore, another aspect of the present invention is a trough cable guiding device that guides a cable in the extending direction of the trough, including a lower roller that supports the weight of the cable, a pair of lower roller shaft supports that pivotally support the lower roller rotatably around an axis, an arch portion that connects the pair of lower roller shaft supports to each other and extends above the lower roller so as to avoid the cable's trajectory, and a fixing mechanism that fixes the arch portion to the trough. One of the lower roller shaft supports is configured to be able to release its connection with the arch portion, and the other of the lower roller shaft supports is rotatable with respect to the arch portion. This is a trough cable guiding device characterized by the above.

[0028] Also with the trough cable guiding device of this aspect, the cable can be extended (guided) in a state where the lid has been removed in advance. In the case of this aspect, when storing (dropping) the cable into the trough, one of the lower roller shaft supports releases its connection with the arch portion and the other of the lower roller shaft supports is rotated with respect to the arch portion, so that the lower roller can be retracted from below the cable. As a result, it is not necessary to remove the entire trough cable guiding device from the trough (such removal work can be carried out slowly later (together with trough cable guiding devices in other locations)).

Advantages of the Invention

[0029] According to the present invention, the cable can be extended (guided) in a state where the lid has been removed in advance. And when storing (dropping) the cable into the trough, one of the outward extending portions releases its connection with the arch portion and the other of the outward extending portions is rotated with respect to the arch portion, so that the lower roller can be retracted from below the cable. Therefore, it is not necessary to remove the entire trough cable guiding device from the trough (such removal work can be carried out slowly later (together with trough cable guiding devices in other locations)).

[0030] Alternatively, according to another aspect of the present invention, the cable can be laid (guided) with the cover removed beforehand. In this aspect, when the cable is placed (dropped) into the trough, one of the lower roller shaft supports is released from the arch and the other of the lower roller shaft supports rotates relative to the arch, thereby allowing the lower roller to be moved away from the position below the cable. This eliminates the need to remove the entire trough roller device from the trough (such removal can be done later at a leisurely pace (together with other trough roller devices)). [Brief explanation of the drawing]

[0031] [Figure 1] This is a photograph corresponding to a perspective view of a trough roller device according to one embodiment of the present invention. [Figure 2] This is a photograph corresponding to the perspective view showing the state of the trough drop device in Figure 1. [Figure 3] Figure 1 shows the six views of the trough roller device, with (a) being a top view, (b) a left side view, (c) a front view, (d) a right side view, (e) a rear view, and (f) a bottom view. [Figure 4] This diagram shows the trough roller device in the state shown in Figure 1, with (a) being a top view and (b) being a front view. [Figure 5] This diagram shows the trough roller device in the state shown in Figure 2, with (a) being a top view and (b) being a front view. [Figure 6] This is a magnified photograph of the vicinity of the left outward extension of the trough cluster device in the state shown in Figure 1. [Figure 7] This is a magnified photograph of the vicinity of the rightward outward extension of the trough cluster device in the state shown in Figure 1. [Figure 8] This is a magnified photograph showing the lower left side of the arch section of the trough roller device in the state shown in Figure 2. [Figure 9] This is a schematic diagram showing an example of the internal structure of the outward extension on the left. [Figure 10] This is a magnified photograph showing the operation of the trough roller device from the state in Figure 1 to the state in Figure 2 (or vice versa). [Figure 11]This diagram is similar to Figure 6, but it shows the rotating handle in a loosened state. [Figure 12] This diagram is similar to Figure 6, but it shows the rotating handle in the tightened position. [Figure 13] This is a photograph corresponding to a perspective view of the trough roller device developed during the process leading to the present invention. [Modes for carrying out the invention]

[0032] Embodiments of the present invention will be described below with reference to the drawings.

[0033] (composition) Figure 1 is a photograph corresponding to a perspective view of the trough roller device 1 according to one embodiment of the present invention, and Figure 2 is a photograph corresponding to a perspective view showing the state of the trough roller device 1 of this embodiment when the cable is dropped in.

[0034] Furthermore, Figure 3 is a six-view drawing of the trough roller device 1 of this embodiment, where (a) is a top view, (b) is a left side view, (c) is a front view, (d) is a right side view, (e) is a rear view, and (f) is a bottom view. Furthermore, Figure 4 shows the trough roller device 1 in the state shown in Figure 1, where (a) is a top view and (b) is a front view. Furthermore, Figure 5 shows the trough roller device 1 in the state shown in Figure 2, where (a) is a top view and (b) is a front view.

[0035] As shown in Figures 1 to 5, the trough roller device 1 of this embodiment is a trough roller device that guides a cable C in the extending direction of a trough T, and comprises a lower roller 11 that supports the weight of the cable C, and a lower roller pivot that pivotally supports the lower roller 11 so that it can rotate around its axis. The lower roller pivot has a pair of outward extensions 21 and 22 that extend outward beyond each end of the lower roller 11. Specifically, the lower roller pivot has a left outward extension 21 that extends to the left beyond the left end of the lower roller 11, and a left outward extension 22 that extends to the right beyond the right end of the lower roller 11.

[0036] Cable C, for example, has a diameter of approximately 20-100 mm and weighs approximately 1-20 kg / m.

[0037] The lower roller 11 has, for example, a diameter of 3.8 cm and an axial length of 15 cm.

[0038] The arch section 23 connects the pair of outward extensions 21 and 22 of the lower roller shaft support to each other, and extends above the lower roller 11 to avoid the track of the cable C. The arch section 23 is made of steel.

[0039] Referring to Figure 3(c), the arch portion 23 forms a U-shape with its upper surface portion 23a, left surface portion 23b, and right surface portion 23c, and further has a left bottom surface portion 23d and a right bottom surface portion 23e.

[0040] The top surface 23a has, for example, a length of 20 cm in the left-right direction, a width of 7 cm in the front-back direction, and a thickness of 4.5 mm. The left surface 23b and the right surface 23c each have, for example, a height of 20 cm, a width of 7 cm in the front-back direction, and a thickness of 4.5 mm. The left bottom surface 23d and the right bottom surface 23e each have a length of 4 cm in the left-right direction, a width of 4 cm in the front-back direction, and a thickness of 4.5 mm.

[0041] Furthermore, the trough roller device 1 of this embodiment includes a bracing mechanism 30 as a fixing mechanism for fixing the arch portion 23 to the trough T, which fixes the arch portion 23 between the side walls of the trough T by applying a bracing force between the arch portion 23 and the side walls of the trough T.

[0042] Specifically, the bracing mechanism 30 of this embodiment includes a side wall contact portion 31 that abuts against one side wall of the trough T, a bracing rod portion 32 that extends retractably between the left side portion 23b of the arch portion 23 and the side wall contact portion 31, and an extension / retraction operating portion 33 that extends and retracts the bracing rod portion 32.

[0043] In this embodiment, the telescopic operating section 33 is a rotary handle operated manually by the operator. Rotating it to one side extends the tension rod section 32, increasing the tension and providing a stable fixed state. Rotating it to the other side retracts the tension rod section 32, decreasing the tension and allowing the trough roller device 1 to be removed from the trough T.

[0044] Furthermore, in the trough roller device 1 of this embodiment, a side wall contact portion 24 is provided on the right side surface portion 23c of the arch portion 23 so as to be opposite to the side wall contact portion 31, and which contacts the other side wall of the trough T.

[0045] Furthermore, a feature of the trough roller device 1 of this embodiment is that the left outward extension portion 21 of the lower roller shaft support can be released from the arch portion 23, and the right outward extension portion 22 of the lower roller shaft support can rotate relative to the arch portion 23.

[0046] More specifically, as shown in Figure 6, the left outward extension 21 extends to the knob 26a via a narrow diameter portion 26b, and the left outward extension 21 is connected to the arch portion 23 by fitting the narrow diameter portion 26b into the corresponding stepped portion 23s (see Figure 8) on the left surface portion 23b of the arch portion 23.

[0047] On the other hand, as shown in Figure 7, a cylindrical shaft 29 is provided so as to extend upward from the upper surface of the right bottom surface 23e of the arch portion 23 (in a direction parallel to the right surface portion 23c) (the inner surface may be threaded), and a pivot portion 28 that can rotate around the axis of the cylindrical shaft 29 is provided around the cylindrical shaft 29, and the pivot portion 28 constitutes a part of the right outward extension portion 22 (it may be integrated beforehand or a separate element may be connected) (see Figure 3(c)), thereby connecting the right outward extension portion 22 to the arch portion 23.

[0048] Because the pivot part 28 is rotatable around the axis of the cylindrical shaft 29, the right outward extension 22 is rotatable relative to the arch part 23. Therefore, by operating the knob 26a, the narrow diameter part 26b can move within the corresponding transverse groove on the left side 23b of the arch part 23 and detach from the groove, thereby releasing the connection between the left outward extension 21 and the arch part 23, and returning to the state shown in Figures 2 and 5. Also, by operating the knob 26a in the opposite direction, the narrow diameter part 26b can return to the corresponding transverse groove on the left side 23b of the arch part 23, thereby restoring the connection between the left outward extension 21 and the arch part 23, and returning to the state shown in Figures 1 and 4.

[0049] Furthermore, in this embodiment, the knob member 26, which integrally has a knob 26a and a narrow-diameter portion 26b, moves relative to the remaining portion of the left outward extension 21 via a spring 26s (see Figure 9). With this configuration, when operating the trough roller device from the state in Figure 1 to the state in Figure 2 (or vice versa), as shown in Figure 10, the knob member 26 is pulled to move the narrow-diameter portion 26a further to the left away from the corresponding stepped portion 23s (see Figure 8) on the left surface portion 23b of the arch portion 23, and then the knob 26b is rotated (using the rotation of the rotating portion 28) to make it easier to move the left outward extension 21 within the lateral groove.

[0050] The lower roller shaft support (see Figure 9), which includes a pair of outward extensions 21 and 22, has, for example, a diameter of 12 mm and a length of 208 mm. The knob 26a of the knob member 26 has, for example, a diameter of 25 mm and a length of 32 mm, and the narrow diameter portion 26b has, for example, a diameter of 20 mm and a length of 4.5 mm. The cylindrical shaft 29 has, for example, a diameter of 6 mm, and the rotating portion 28 is a shaft member concentric with the outward extension 22, with an outer diameter of 12 mm and a length of 22 mm, and is passed through the cylindrical shaft 29 so as to be rotatable relative to each other in orthogonal directions.

[0051] Furthermore, in this embodiment, the arch portion 23 pivotally supports the upper roller 12 above the lower roller 11, facing the lower roller 11. The upper roller 12 has, for example, a diameter of 3.8 cm and an axial length of 19 cm.

[0052] Furthermore, the arch portion 23 of this embodiment pivotally supports the left-side roller 13 and the right-side roller 14 such that, in a front view, they form a square or rectangle together with the lower-side roller 11 and the upper-side roller 12. The left-side roller 13 and the right-side roller 14 each have, for example, a diameter of 3.8 cm and an axial length of 19 cm.

[0053] In this embodiment, the lower roller 11 and the upper roller 12 are positioned at the same location (in the same plane) in the front-to-back direction, and the distance between their vertical axes is 151 mm. The left roller 13 and the right roller 14 are also positioned at the same location (in the same plane) in the front-to-back direction, and the distance between their horizontal axes is 151 mm. The left roller 13 and the right roller 14 are offset to the rear of the lower roller 11 and the upper roller 12 in the front-to-back direction, and the distance of this offset (distance between axes in the front-to-back direction) is 42 mm.

[0054] Furthermore, as shown in Figure 1, the lower roller shaft support of this embodiment is provided with a stopper ring 27 located inside the left outward extension 21. As shown in Figure 12, the stopper ring 27 has the function of preventing contact (interference) with the lower roller 11 when the left side portion 23b of the arch portion 23 deforms when the rotating handle 33 is tightened.

[0055] (Effects and Benefits) With the trough roller device 1 of this embodiment as described above, the cable C can be extended (guided) with the cover removed in advance. When the cable C is placed (dropped) into the trough T, the left outward extension 21 is released from the arch 23 and the right outward extension 22 is rotated relative to the arch 23, which allows the lower roller 11 to be moved away from the position below the cable C. Therefore, it is not necessary to remove the entire trough roller device 1 from the trough T (such removal work can be done later at a leisurely pace (together with other trough roller devices)).

[0056] Furthermore, according to the trough roller device 1 of this embodiment, the bracing mechanism 30 applies a bracing force between the arch portion 23 and the side wall of the trough T, thereby fixing the arch portion 23 between the side walls of the trough T. This feature allows the arch portion 23 to be stably fixed to the trough T.

[0057] In particular, according to the trough roller device 1 of this embodiment, the bracing mechanism 30 has a side wall contact portion 31 that abuts against one side wall of the trough T, a bracing rod portion 32 that extends retractably between the left side portion 23b of the arch portion 23 and the side wall contact portion 31, and an extension / retraction operating portion 33 that extends and retracts the bracing rod portion 32, so that the arch portion 23 can be fixed to the trough T more stably and more easily.

[0058] Furthermore, according to the trough roller device 1 of this embodiment, since the extension / retraction operating part 33 is a rotary handle, it is easy for the operator to change the tensioning force of the tensioning mechanism 30.

[0059] Furthermore, according to the trough roller device 1 of this embodiment, a side wall contact portion 24 is provided on the right side surface portion 23c of the arch portion 23, which contacts the other side wall of the trough T. This feature also allows the arch portion 23 to be fixed to the trough T more stably and easily.

[0060] Furthermore, in the trough roller device 1 of this embodiment, the arch section 23 pivotally supports the upper roller 12 so as to face the upper side of the lower roller 11. This feature allows the cable C to be extended (guided) by being sandwiched between the upper and lower sections, resulting in more stable behavior of the cable C during the extension (guiding) work.

[0061] Furthermore, according to the trough roller device 1 of this embodiment, the arch portion 23 pivotally supports the left-side roller 13 and the right-side roller 14 so as to form a square or rectangle together with the lower-side roller 11 and the upper-side roller 12 when viewed from the front. This feature allows for stable cable guidance as a so-called four-sided roller device.

[0062] (Another form) In the above-described embodiment, the lower roller shaft support has a pair of outward extensions 21 and 22 that penetrate the lower roller 11, with the left outward extension 21 being detachable from the arch portion 23 and the right outward extension 22 being rotatable relative to the arch portion 23. However, instead, it is also possible to provide a pair of lower roller shaft supports that pivotally support the lower roller 11 at both ends (by sandwiching it), with one of the lower roller shaft supports being detachable from the arch portion 23 and the other lower roller shaft support being rotatable relative to the arch portion 23. [Explanation of Symbols]

[0063] 1. Trough Roller Device 11 bottom rollers 12 Top roller 13 Left-hand roller 14 Right-hand side roller 21 Left outward extension of the lower roller shaft support 22 Rightward extension of the lower roller shaft support 23 Arch section 23a Top part 23b Left side 23c Right side 23d Bottom left side 23e Bottom right side 23s Step section 24 Side wall contact part 26 Knob component 26a Knob 26b Narrow diameter part 26s spring 27 Stopper Ring 28 Rotating parts 29. Cylindrical shaft 30. Tension mechanism 31 Side wall contact part 32 Tension rod section 33 Telescopic operation section C Cable T-trough

Claims

1. A trough guide device that guides a cable in the direction of extension of the trough, The lower roller that supports the weight of the aforementioned cable, The lower roller pivot support portion rotatably supports the lower roller around its axis and has a pair of outwardly extending portions that extend outward beyond each end of the lower roller, The pair of outwardly extending portions are connected to each other, and an arch portion extends above the lower roller so as to avoid the cable's trajectory, A fixing mechanism for fixing the arch portion to the trough, Equipped with, One of the outwardly extending portions can be disconnected from the arch portion. The other end of the outward extension is rotatable relative to the arch portion. A trough roller device characterized by the following features.

2. The fixing mechanism includes a bracing mechanism that fixes the arch portion between the side walls of the trough by applying a bracing force between the arch portion and the side wall of the trough. The trough roller device according to feature 1.

3. The aforementioned bracing mechanism is A side wall contact portion that abuts against one side wall of the trough, A tension rod portion extends extendably between the arch portion and the side wall contact portion, The aforementioned tension rod section includes an extension / retraction mechanism, The trough roller device according to claim 2, characterized in that it has the following features.

4. The aforementioned telescopic operating part is a rotary handle. The trough roller device according to feature 3.

5. The arch portion is also provided with a side wall contact portion that abuts against the other side wall of the trough. The trough roller device according to feature 3.

6. The arch portion pivotally supports the upper roller so as to face the upper side of the lower roller. A trough roller device according to any one of claims 1 to 5.

7. The arch portion supports the left and right rollers such that, when viewed from the front, it forms a square or rectangle together with the lower and upper rollers. The trough roller device according to feature 6.

8. A trough guide device that guides a cable in the direction of extension of the trough, The lower roller that supports the weight of the aforementioned cable, A pair of lower roller support parts that pivotally support the lower roller so that it can rotate around its axis, The pair of lower roller shaft supports are connected to each other, and an arch portion extends above the lower roller so as to avoid the cable's trajectory, A fixing mechanism for fixing the arch portion to the trough, Equipped with, One of the lower roller shaft supports is designed to be detachable from the arch portion. The other end of the lower roller shaft support is rotatable relative to the arch portion. A trough roller device characterized by the following features.

Images