Tooth stop for column

Abstract

To provide a column body brake capable of preventing rolling of a column body in its circumferential direction when the column body which is a heavy article such as an electric pole is conveyed or stored.SOLUTION: A column body brake 1A is a brake installed on a circumferential side surface 50a of a column body 50 which is circular in a sectional shape perpendicular to a center axis 50b and is a heavy article and capable of preventing rolling of the column body 50 in its circumferential direction during conveyance or storage thereof, and comprises: a brake body 2 formed into a polygonal column body on the center axis or parallel to the center axis and having a through-hole for storing the column body 50; a plurality of bearings 4 provided in a spot shape in an inner wall 3a of the through-hole to slide the brake body 2 in the circumferential direction of the column body 50; and an elastic body 9 interposed between the inner wall 3a of the through-hole and the bearings 4 to make the bearing 4 retractable with respect to an inner surface S of the through-hole. The inner surface S of the through-hole is formed by a non-slip material.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a pole pawl that can prevent a heavy pole such as an electric pole from rolling in its circumferential direction when the pole is transported or stored.

[0002] Generally, when a utility pole is stored lying down on flat ground, "pull guards" are installed around the pole to clamp it from the left and right to prevent it from rolling in any circumferential direction. Furthermore, when transporting utility poles from a factory or storage location to a destination, large trucks are usually used. Furthermore, when transporting utility poles by truck or other transport vehicle, the utility poles are firmly fixed to the bed of the truck using a chain tightening device or the like, but prior to that, it was also necessary to temporarily fix the utility poles to the bed of the truck using ratchet stops. Furthermore, the installation or removal of wedge stoppers from utility poles usually requires a person to enter between or under the utility poles, making it a dangerous job that could result in personal injury if the utility pole moves unintentionally. Furthermore, utility pole pawls are usually made of triangular wooden prisms, and because the size (maximum width) of utility pole pawls is smaller than the diameter of the utility pole, when the pawl is inserted between the utility pole and the mounting surface, the inserted pawl is hidden by the utility pole, making it difficult to visually confirm its presence. In other words, someone had to go to the side of the utility pole to check whether the wedge was securely fastened to the pole. If the wedge was forgotten to be installed or not used properly, there was a risk of the utility pole rolling unintentionally and causing an accident resulting in injury or death. There are also vehicles specially designed for transporting utility poles, and these vehicles are equipped with ratchet stops specifically for utility poles on the loading platform. However, the number of such vehicles is limited, and in reality, utility poles are often transported by fixing them to the loading platform of a transport vehicle (such as a truck) using the conventionally known ratchet stopper made of a wooden triangular prism as described above.

[0003] When using the above-mentioned conventionally known ratchet, the utility pole may be moved by rolling during the installation and removal work. In this case, the utility pole may unintentionally roll with force and go over the ratchet, or the ratchet that fixes the utility pole may come off or become displaced due to vibration during transportation. In either case, there is a possibility that a person working on the platform of the transport vehicle may come into contact with the moving utility pole and cause a personal injury accident. Furthermore, as described above, the conventional ratchet installed between the utility pole and the mounting surface was difficult to see because it was hidden in the shadow of the utility pole, and there was also the problem that it took time and effort to check for safety. In addition, when storing utility poles lying flat on the ground using the above-mentioned conventional pole ratchet, it was necessary to arrange the utility poles side by side while leaving a working space for inserting and removing the ratchet. In this case, since the utility poles cannot be arranged close to each other on the mounting surface, it was necessary to secure a large space for storing the utility poles, which was inefficient. The following prior applications are known that have technical content related to the present invention.

[0004] Patent Document 1 discloses an invention entitled "End Wall for Winding Film Made of Material That Can Be Formed Without Cutting" that relates to an end wall used when stacking winding rolls. The end wall, which is the invention disclosed in Patent Document 1, is composed of a plate 11 having a smooth surface on the front side and reinforced with radial ribs and annular ribs on the rear side, as explained using the symbols shown in Figure 3 in the document. Also, in the end wall 1 disclosed in the above-mentioned patent, these radial ribs are reinforced with webs that run perpendicular to the plate 11. Furthermore, in the end wall 1 disclosed in the patent, another web reinforces the rounded web of the locking boss 4. In the end wall 1 disclosed in Patent Document 1, a central push-in peg is disposed on the front side of the plate 11. Furthermore, the three side walls 13 of the plate 11 are provided with stacking bosses 9, 19 which define stacking pockets 8, 18. These stacking pockets have shapes complementary to the shapes of the stacking bosses 9, 19. In addition, the fourth side wall 30 of the end wall 1 has a grooved portion 31 which rests on the pallet when the winding roller is wrapped with the end wall 1 . The end wall 1 disclosed in the above-mentioned Patent Document 1 has a simple and reliable structure, and winding rolls wrapped with such end walls can be stacked on a pallet without slippage.

[0005] Patent Document 2 discloses an idea entitled "Container" relating to an improved pallet framework for storing long objects such as rods and tubes. The container disclosed in Patent Document 2 is a pallet framework for storing long items such as rods and tubes, and is characterized by comprising a number of frame bodies constituting a hexagonal rigid or partially removable pallet frame, and support members that can be attached between the frame bodies as necessary. According to the container disclosed in Patent Document 2 as described above, when slinging, it is easy to wire the center of gravity and pass a hook through, and the shape can be made stable even when suspended. In addition, according to the device disclosed in Patent Document 2, the container has the effect of being self-guiding with respect to positioning when lowering. Furthermore, according to the device disclosed in Patent Document 2, the container has the effect of being able to effectively utilize space when storing in a multi-tiered direct stack. In addition, according to the device disclosed in Patent Document 2, the container has a polygonal shape, that is, a hexagon, so it has the advantage of being excellent in storage efficiency. Furthermore, according to the device disclosed in Patent Document 2, the number of members that support the weight of the load during storage is increased, and deformation of the container itself is also restricted, so that the members (frame) can be made smaller. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 6-24482 [Patent Document 2] Publication No. 52-47071 Summary of the Invention [Problem to be solved by the invention]

[0007] Although the invention disclosed in the above-mentioned Patent Document 1 has the potential to be used as a ratchet stop for a cylinder, there was a problem in that if the end walls fitted to both ends of the winding roll (= cylinder) in the central axial direction are misaligned circumferentially around the central axis of the winding roll, the winding rolls with the end walls attached could not be stacked efficiently.

[0008] The device disclosed in the above-mentioned Patent Document 2 may also be usable as a stopper for a column, but there is a problem in that if the containers attached to both ends of the central axial direction of the rod, tube, etc. are misaligned circumferentially around the central axis of the hollow portion of the container, the rod, tube, etc. equipped with the containers cannot be stacked efficiently.

[0009] The present invention has been made in response to such conventional circumstances, and its purpose is to provide a pawl for a pillar that can prevent the pillar from rolling in the circumferential direction when it is transported or stored in a horizontal position, and that allows the orientation of the pawl in the circumferential direction of the pillar to be freely changed after the pawl is attached to the peripheral side surface of the pillar. [Means for solving the problem]

[0010] The first invention for solving the above problems is a pawl for a pillar that is attached to the peripheral side of a pillar that is a heavy object and has a circular cross-sectional shape perpendicular to the central axis, and prevents the pillar from rolling in its circumferential direction during transportation or storage, and is characterized in that it comprises a pawl body that is a polygonal pillar and is formed on or parallel to its central axis, and has a through hole for accommodating the pillar, a plurality of bearings that are provided in spots on the inner wall of the through hole and rotate the pawl body in the circumferential direction of the pillar, and an elastic body that is interposed between the inner wall of the through hole and the bearings and causes the bearings to protrude into and retract from the inner surface of the through hole, and the inner surface of the through hole is provided with or consists of an anti-slip material. In the first invention having the above configuration, the pawl body is provided around the outer surface of the pillar, and has the effect of preventing the pillar from rolling in its circumferential direction when the pillar is placed on its side on the support surface. Furthermore, by providing the pawl body around the outer surface of the pillar, the pawl body moves together with the movement of the pillar. The bearing also has the effect of allowing the pawl body, which is provided on the outer surface of the pillar, to slide or rotate in the circumferential direction of the pillar. Furthermore, the elastic body interposed between the inner wall of the pawl body and the bearing contracts when the load of the column acts on the elastic body, causing the bearing to sink deeper into the inner wall of the through hole, i.e., the bearing sinks to the same level as or deeper than the inner surface of the through hole, so that the outer surface of the column comes into contact with the inner surface of the through hole of the pawl body. As a result, friction is generated between the outer surface of the column and the inner surface of the through hole of the pawl body, preventing the column from sliding in the direction of its central axis. In addition, the elastic body has the effect of returning to its original shape when the load of the pillar is released, and pushing the bearing toward the center of the through hole again. This causes the bearing to protrude from the inner surface of the through hole. In other words, when the load of the pillar is not acting on the bearing, the bearing is in contact with the outer surface of the pillar, and this allows the pawl body to slide or rotate circumferentially on the outer surface of the pillar. Therefore, when the pawl body is circumferentially mounted on the outer surface of the pillar and the load of the pillar is not acting on the bearing, it becomes possible to change the orientation of the pawl body in the circumferential direction of the pillar as desired. Furthermore, since the inner surface of the through hole formed in the pawl body is provided with or consists of an anti-slip material, when the outer surface of the pillar body comes into contact with the inner surface of the inner wall of the through hole, the frictional force generated between them is increased, which has the effect of more reliably restricting the pillar body from sliding within the through hole in the direction of its central axis.

[0011] The second invention, a pawl for a pillar, is the above-mentioned first invention, characterized in that the bearing comprises a ball that contacts the outer surface of the pillar and slides circumferentially around the pillar, a roller that supports the ball and rolls the ball in the desired direction, and a case that houses the ball and roller. The second invention having the above configuration has the same effect as the first invention. Furthermore, in the second invention, the bearing slides only in the circumferential direction of the column, and does not slide in the central axial direction of the column. This makes it possible to prevent the pawl body provided around the outer surface of the pillar from moving in the direction of the central axis of the pillar. As a result, according to the second invention, the effect of preventing the pillar from slipping out of the through hole of the pawl body and the pawl body from coming off the pillar is achieved.

[0012] The third invention, a column pawl, is the first or second invention described above, characterized in that the pawl body is made up of a plurality of segments, and is equipped with a connecting structure that connects the segments in series and integrally, and a fixing structure that maintains the connected segments in a closed state. The third invention having the above configuration has the same effect as the first or second invention. Furthermore, according to the third invention, the pawl body is made up of a plurality of divided pieces, and these divided pieces are integrated in series by a connecting structure, and further, a fixing structure is provided for maintaining the integrated divided pieces in a closed state, thereby improving the ease of attachment and detachment of the pawl body to the peripheral side surface of the pillar.

[0013] The pillar pawl of the fourth invention is any one of the first to third inventions described above, characterized in that the pawl body is made of rubber. The fourth invention having the above configuration has the same effect as each of the first to third inventions. Furthermore, according to the fourth invention, the pawl body itself can function as an anti-slip material. In this case, there is no need to provide a separate anti-slip material on the inner wall of the through hole of the pawl body, which has the effect of simplifying the structure of the fourth invention.

[0014] The fifth invention is a pawl for a pillar body according to any one of the first to fourth inventions described above, characterized in that the pawl body is a triangular pillar body. The fifth invention as configured above has the same effect as each of the first to fourth inventions described above. Furthermore, the fifth invention has the effect of maximizing the anti-rolling effect of the pillar body when the pillar body equipped with the fifth invention is placed on a support surface in a horizontal state, compared to when the cross-sectional shape perpendicular to the central axis of the pawl body is a polygon having more corners than a triangle. Effect of the Invention

[0015] According to the first invention as described above, even if the pawl bodies are attached to both ends of the central axis of the pillar and these pawl bodies are misaligned with each other in the circumferential direction around the central axis of the pillar, the misalignment between the pawl bodies can be automatically corrected without manual intervention, which makes it easy and efficient to stack the pillars while bringing the outer surfaces of the pawl bodies into contact with each other. That is, according to the first aspect of the present invention, the orientation of the pawl body attached to the outer surface of the pillar can be freely changed in the circumferential direction around the central axis of the pillar. Furthermore, when the pawl body slides or rotates on the peripheral side surface of the pillar, almost no friction occurs between the peripheral side surface of the pillar and the pawl body, so there is no need to worry about the contact area between the bearing and the outer surface of the pillar being damaged, or about external forces acting on the pawl body that could damage it. Therefore, according to the first aspect of the present invention, the pillars can be placed on the placement surface in a horizontal state with the pillars as close to each other as possible.

[0016] Furthermore, when using the first invention, once the first invention is attached to the cylinder, there is no need for a person to touch and operate the first invention, move the first invention, or fine-tune the orientation, position, etc. of the first invention. This means that there is no particular need for someone to be near the pillar when placing the pillar on the support surface in a horizontal position. Therefore, according to the first invention, when the work of placing the cylinder body on a supporting surface in a horizontal position is performed, the risk of a person accidentally touching a rolling cylinder body and causing an injury accident can be significantly reduced.

[0017] Furthermore, since the pillar pawl of the first invention is larger than the diameter of the pillar, it is easy to visually check whether it is attached to the pillar or not. As a result, it is possible to check whether the first invention is attached or not without a person approaching the column to be handled, thereby preventing a person from accidentally approaching a column that does not have the first invention and accidentally touching a rolling column, which could result in personal injury. Therefore, according to the first aspect of the present invention, it is possible to improve safety when handling the columnar body, which is a heavy object.

[0018] In addition, according to the first invention, when the column having the first invention attached thereto is placed on a placement surface, the column can be prevented from sliding in the direction of its central axis. In this case, particularly when the first invention is attached to a heavy pillar and loaded onto a transport vehicle or the like for transport, and the transport vehicle accelerates or decelerates, it is possible to preferably prevent the pillar from falling off the pawl body of the first invention. Therefore, according to the first aspect of the present invention, a pawl suitable for use as a pawl during transportation of a heavy pillar body can be provided.

[0019] The second invention has the same effect as the first invention described above. Furthermore, according to the second invention, it is possible to more reliably prevent the column from coming off from the second invention. In this case, it is possible to further improve the safety during use of the second invention.

[0020] The third invention has the same effects as those of the first or second invention described above. Furthermore, according to the third invention, the attachment and detachment of the third invention to the peripheral side surface of the column can be improved. In other words, according to the third invention, the third invention can be attached and detached to the peripheral side surface of the pillar while it is hung from a sling, i.e., while preventing the pillar from rolling in its circumferential direction. Therefore, according to the third aspect of the present invention, it is possible to preferably prevent accidents resulting in injury or death caused by the pillar body unintentionally rolling in its circumferential direction during the attachment and detachment work.

[0021] The fourth invention has the same effects as the first to third inventions. Furthermore, according to the fourth invention, the structure of the pawl body can be simplified compared to when the pawl body is composed of two parts, the body part and the anti-slip material. In this case, the labor and cost required for manufacturing the fourth invention can be reduced. Furthermore, since the pawl body itself has elasticity, the pawl body itself can be made less susceptible to damage. Therefore, according to the fourth aspect of the present invention, a pillar pawl having excellent productivity and shock-absorbing properties can be provided.

[0022] The fifth invention has the same effect as the first to fourth inventions. Furthermore, according to the fifth invention, when the cylinder body is placed on a support surface in a horizontal state with the fifth invention attached, the effect of preventing the cylinder body from rolling in its circumferential direction can be maximized. As a result, a pillar pawl with improved safety can be provided. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2A is a perspective view of a pole pawl according to an embodiment of the present invention, and FIG. 2B is a perspective view of the pole pawl from another direction. [Diagram 2] FIG. 2(a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. 2(b) is a cross-sectional view showing the pillar pawl according to the embodiment of the present invention in an open state. [Diagram 3] 3(a) is a plan view of a bearing according to an embodiment of the present invention, (b) is a cross-sectional view taken along line BB in FIG. 3(a), and (c) is a cross-sectional view taken along line CC in FIG. 3(a). [Figure 4] 1A and 1B are enlarged cross-sectional views of a portion of a bearing periphery of a pawl for a pillar body according to an embodiment of the present invention. [Diagram 5] 1A and 1B are cross-sectional views showing how a pole ratchet according to an embodiment of the present invention is attached to a pole such as a utility pole. [Figure 6] FIG. 1A is a cross-sectional view showing the appearance of a pole body pawl of an embodiment of the present invention attached to a pole body such as a utility pole after rotation, and FIG. 1B is a cross-sectional view showing the appearance of a pole body such as a utility pole with the pole body pawl attached thereto placed on a mounting surface. [Figure 7] 7A is an enlarged cross-sectional view of a main part in FIG. 6A, and FIG. 7B is an enlarged cross-sectional view of a main part in FIG. 6B. [Figure 8] FIG. 1 is a perspective view showing a state in which a pole such as a utility pole to which a pole pawl according to an embodiment of the present invention is attached is placed on a placement surface. [Figure 9] FIG. 1 is a side view showing a state in which a pole such as a utility pole to which a pole ratchet according to an embodiment of the present invention is attached is loaded onto a transport vehicle. [Figure 10] FIG. 11 is a cross-sectional view illustrating another method of using the pillar pawl according to the embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view of a pillar pawl according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pillar pawl according to an embodiment of the present invention will be described in detail with reference to FIGS.

[0025] [1; Basic configuration of the present invention] The basic configuration of a pillar pawl according to an embodiment of the present invention will be described with reference to FIGS. Fig. 1(a) is a perspective view of a pawl for a cylinder according to an embodiment of the present invention, (b) is a perspective view of the same pawl from another direction, and Fig. 2(a) is a cross-sectional view taken along line AA in Fig. 1, (b) is a cross-sectional view of the pawl for a cylinder according to an embodiment of the present invention in an open state. The pillar pawl 1A in this embodiment is a "pawl" that is attached to the circumferential side of a pillar, which is a heavy object and has a circular (including the concept of approximately circular) cross-sectional shape perpendicular to the central axis, such as a utility pole, to prevent the pillar from rolling in its circumferential direction during transportation or storage. The pole pawl 1A of this embodiment has a three-dimensional shape as a triangular pole, as shown in FIG. 1(a), and is provided with a pole pawl body 2 formed on its central axis and having a through hole 3 for accommodating a utility pole 50 shown in the following paragraph.

[0026] 2(a), the pawl body 2 is provided with a plurality of bearings 4 arranged in spots on the inner wall 3a of the through hole 3. More specifically, in a cross section perpendicular to the central axis of the through hole 3, the bearings 4 are arranged in spots on the inner wall 3a at desired intervals. Furthermore, in the pillar pawl 1A according to this embodiment, as shown in Fig. 2(a), an elastic body 9 is provided between the bearing 4 and the inner wall 3a of the through hole 3 formed in the pawl body 2. This allows the bearing 4 to protrude and retract from the inner surface S of the through hole 3. The action and effect of allowing the bearing 4 to protrude and retract will be described in detail later with reference to another drawing. In addition, in the pole pawl 1A according to this embodiment, the pawl body 2 is made of rubber. Therefore, when the outer surface of a utility pole, which will be described later, comes into contact with the inner surface S of the through hole 3 formed in the pawl body 2, a frictional force can be generated between the outer surface of the utility pole and the inner surface S of the through hole 3. This makes it possible to prevent the pole, such as a utility pole, inserted into the through hole 3 from sliding in the direction of its central axis.

[0027] Furthermore, as shown in Figures 1 and 2, the pillar pawl 1A of this embodiment may have a pawl body 2 formed, for example, from two half-split segments 2a, 2b, and these segments 2a, 2b may be connected together by a connecting structure 10, such as a hinge 10a, to form an integrated unit (optional component). In this case, as shown in Fig. 2(b), the split pieces 2a, 2b constituting the pawl body 2 can be opened by rotating them on the hinge 10a (connecting structure 10) to open the through hole 3. This allows the column body (e.g., utility pole 50, etc.) to be easily inserted and removed from the through hole 3.

[0028] Furthermore, when the pawl body 2 of the pillar pawl 1A in this embodiment is composed of multiple segments (for example, a segment group consisting of segments 2a and 2b) as shown in Figures 1 and 2, which are connected in series to each other via a connecting structure 10, it is necessary to have a fixing structure 11 for maintaining the segment group and the single or multiple connecting structures 10 in a closed state. Such a fixing structure 11 may be constituted, for example, by a screw receiver 12 having a thread on the inside of a hollow metal tube, and a screw 13 screwed into this screw receiver 12, as shown in Figures 1(a) and 2(a) and (b). Furthermore, when the fixing structure 11 is constructed by the screw receiver 12 and the screw 13 as described above, the group of divided pieces and the single or multiple connecting structures 10 can be switched between an open and closed state as desired.

[0029] Next, the structure of the bearing 4 in the pillar body pawl 1A according to this embodiment will be described with reference to FIG. Fig. 3(a) is a plan view of a bearing according to an embodiment of the present invention, (b) is a cross-sectional view taken along line BB in Fig. 3(a), and (c) is a cross-sectional view taken along line CC in Fig. 3(a). Note that the same parts as those shown in Fig. 1 and Fig. 2 are given the same reference numerals, and explanations of their configurations will be omitted. As shown in Figures 3(a) to (c), the bearing 4 in this embodiment may include a ball 5 that comes into contact with an outer surface 50a (see Figure 5 in the following paragraph) of a column body such as a utility pole 50 and slides or rolls in the circumferential direction of the utility pole 50, a pair of rollers 6 that support the ball 5 and cause the ball 5 to roll only in the desired direction, and a first case 8 for housing these (optional components). Moreover, the roller 6 constituting the bearing 4 according to this embodiment includes, for example, a shaft 7 that is inserted onto its central axis, and the roller 6 can be installed inside the first case 8 by hooking this shaft 7 onto the inner wall of the first case 8. Furthermore, by hooking the shaft 7 of the roller 6 onto the inner wall of the first case 8, the roller 6 can be rotated around the central axis of this shaft 7 as the base axis. Incidentally, instead of providing the roller 6 with the shaft 7, a protrusion may be formed on each of both end faces of the roller 6 in the central axial direction, and the protrusions may be hooked onto the inner wall of the first case 8.

[0030] Furthermore, since the bearing 4 according to this embodiment is provided with the rollers 6, the balls 5 can be rotated only in the same direction as the rotation direction of the rollers 6. That is, in the bearing 4 according to this embodiment, the balls 5 can be rotated only in the direction indicated by the symbol D or the symbol E in FIG. 3(b). Therefore, in the pillar pawl 1A of this embodiment, by aligning the arrangement direction of the rotation axis (e.g., axis 7) of the roller 6 of the bearing 4 with the central axis direction of the pillar, such as a utility pole 50, housed in the through hole 3, the ball 5 that constitutes the bearing 4 can slide or roll in the circumferential direction of the pillar, such as a utility pole 50.

[0031] Furthermore, the elastic body 9 interposed between the inner wall 3a of the through hole 3 and the bearing 4 in the pillar body pawl 1A according to this embodiment will be described with reference to FIG. 4(a) and (b) are enlarged cross-sectional views of the bearing and its surroundings of the pole pawl according to the embodiment of the present invention. The same parts as those shown in Figs. 1 to 3 are given the same reference numerals, and the description of their configurations is omitted. As shown in FIG. 2 and FIG. 4, the pillar pawl 1A according to this embodiment includes an elastic body 9, for example a rubber material, between the bearing 4 and the inner wall 3a of the through hole 3. 4(a), when no force is acting on the ball 5 to press the ball 5 downward, the elastic body 9 does not elastically deform. Therefore, the ball 5 of the bearing 4 is disposed in a state where it protrudes slightly toward the center of the through hole 3 from the inner surface S of the through hole 3.

[0032] On the other hand, when a force P acts on the ball 5 to press down on the ball 5, the bearing 4 itself is pushed into the inner wall 3a of the through hole 3, as shown in Figure 4(b), and this causes the elastic body 9 to elastically deform so that its thickness decreases. As a result, the apex of the spherical surface of the ball 5 is at the same level as or sinks further into the pawl body 2 than the inner surface S of the through hole 3. In other words, the ball 5 of the bearing 4 is pressed down in the direction indicated by the symbol V in FIG. When the bearing 4 is released from the force P as described above, the elastic body 9 returns to its original state, and the ball 5 of the bearing 4 again protrudes slightly from the inner surface S of the through hole 3 toward the center of the through hole 3 (see FIG. 4(a)). In other words, the ball 5 of the bearing 4 slides back in the direction indicated by the symbol W in FIG. 4(b).

[0033] [2; About the method of use and the action and effect of the present invention] Next, a method of using the pillar pawl 1A according to this embodiment and its functions and effects will be described with reference to Figs. First, a procedure for mounting the pole pawl 1A according to this embodiment on a pole such as a utility pole will be described with reference to Figs. 5(a) and (b) are cross-sectional views showing how the pole ratchet according to the embodiment of the present invention is attached to a pole such as a utility pole. The same parts as those shown in Figs. 1 to 4 are given the same reference numerals, and the description of their configurations is omitted. To attach the pole pawl 1A of this embodiment to a pole such as a utility pole 50, first remove the screw 13 from the screw receiver 12 constituting the fixing structure 11 provided on the pole body 2, and open the connecting body consisting of the split pieces 2a and 2b as shown in Figure 2(b).

[0034] Next, one of the segments (e.g., segment 2b) of the pole-body pawl 1A of this embodiment in the open state is hooked to the outer surface 50a of the pole 50, which is a pole body (see Figure 5(a)), and then the other segment (e.g., segment 2a) that is not hooked to the outer surface 50a of the pole 50 is rotated toward the outer surface 50a of the pole 50 via the connecting structure 10, so that the segments (e.g., segment 2a and segment 2b) are closed (see Figure 5(b)). At this time, the utility pole 50 to which the pole body pawl 1A according to this embodiment is to be attached is in a suspended state by slinging or the like. Thereafter, the pole pawl 1A according to this embodiment can be put into a closed state by screwing the screw 13 into the screw receiver 12 provided on the pawl body 2. In other words, the mounting of the pole pawl 1A according to this embodiment to a pole such as a utility pole 50 can be completed. When removing the pole pawl 1A according to this embodiment from the outer surface 50a of a pole such as a utility pole 50, the above-mentioned procedure may be carried out in reverse.

[0035] Next, the operation of the pole pawl 1A according to this embodiment attached to the outer surface 50a of a pole such as a utility pole 50 will be described with reference to FIGS. Fig. 6(a) is a cross-sectional view showing the state of the pole body pawl according to the embodiment of the present invention after it is rotated when it is attached to a pole body such as a utility pole, and (b) is a cross-sectional view showing the state of a pole body such as a utility pole to which the pole body pawl is attached being placed on a placement surface. Furthermore, Fig. 7(a) is a cross-sectional view showing an enlarged view of the main part in Fig. 6(a), and (b) is a cross-sectional view showing an enlarged view of the main part in Fig. 6(b). Note that the same parts as those shown in Figs. 1 to 5 are given the same reference numerals, and the description of their configurations will be omitted. Immediately after the pole ratchet 1A according to this embodiment has been attached to a pole such as the utility pole 50, the pole such as the utility pole 50 remains suspended. Therefore, the load of a column body such as a utility pole 50 is not applied to each of the bearings 4 provided on the inner wall 3 a of the pawl body 2 . In other words, the force P (see FIG. 4(b) above) that presses each bearing 4 toward the back of the inner wall 3a of the through hole 3 has not yet acted on each bearing 4. Therefore, the balls 5 of the bearing 4 can slide or rotate in the circumferential direction on the outer surface 50a of a column body such as a utility pole 50. In other words, the bearing 4 can slide or rotate in the direction indicated by the symbol T or symbol U in Fig. 4(a) above. This means that the pawl body 2 itself can slide or rotate in the direction indicated by the symbol T or symbol U in Fig. 4(a) above.

[0036] Furthermore, in the pillar body pawl 1A of this embodiment, the bearings 4 are evenly distributed and arranged around the circumferential direction of the through hole 3, and the sum of the weights of all the connecting structures 10 is set to be greater than the sum of the weights of all the fixing structures 11, so that the center of gravity of the pillar body pawl 1A can be positioned closer to the side (face) having the connecting structures 10. Alternatively, the center of gravity of the pillar pawl 1A in this embodiment can be positioned as desired by appropriately adjusting the position of the through hole 3 formed in the pawl body 2, for example by forming the through hole 3 at a position that does not coincide with the central axis of the pawl body 2. In either case, after completing the attachment of the pole body pawl 1A of this embodiment to a pole body such as a utility pole 50, that is, when the worker releases the pole body pawl 1A of this embodiment in the closed state, the pole body pawl 1A rotates around the central axis 50b of the pole 50 due to its own weight (rotates in the direction indicated by symbol F in Figure 5(b)), and can ultimately be stopped with the side (face) having the connecting structure 10 facing vertically downward and the corner having the fixing structure 11 facing vertically upward (see Figure 6(a)).

[0037] More specifically, the object to be attached, for example, a utility pole 50, is hung horizontally with its central axis 50b on a sling, and when an operator attaches the pole body ratchet 1A of this embodiment to its outer surface 50a and then lets go, the pole body ratchet 1A rotates around the central axis 50b of the utility pole 50 due to its own weight, so that the side (face) having the connecting structure 10 faces vertically downward and the corner having the fixing structure 11 faces vertically upward. Thereafter, the pole 50 or other such column body that is suspended by a sling or the like may be gently lowered onto the placement surface 51 as is. As a result, the side (face) having the connecting structure 10 in the pawl body 2 of the pillar body pawl 1A in this embodiment comes into contact with the mounting surface 51, and a pillar body such as a utility pole 50 is placed in a lying position on the mounting surface 51 together with the pillar body pawl 1A.

[0038] In this case, the pillar body such as the utility pole 50 is firmly held by the pillar body pawl 1A according to this embodiment, so there is no need to worry about the pillar body such as the utility pole 50 rolling and moving sideways on the mounting surface 51 (=Effect 1). In addition, once the pole body pawl 1A of this embodiment is attached to a pole body such as a utility pole 50, there is no need to adjust the position or orientation of the pole body pawl 1A (=Effect 2), so the worker can stay away from the pole body such as the utility pole 50. Therefore, by using the pole pawl 1A according to this embodiment, the work of placing a pole such as a utility pole 50 in a horizontal position on the placement surface 51 can be performed safely and efficiently. Furthermore, after the pole body ratchet 1A according to this embodiment is attached to a pole body such as a utility pole 50, the pole body ratchet 1A moves together with the movement of the pole body, so that when a pole body such as a utility pole 50 is moved or reloaded, the worker does not need to adjust the arrangement or orientation of the pole body ratchet 1A and can stay away from the pole body such as the utility pole 50. Therefore, from this point of view as well, the safety when handling a pole body such as a utility pole 50 can be improved (=Effect 3).

[0039] Next, the operation of the pole pawl 1A after a pole such as a utility pole 50 to which the pole pawl 1A according to this embodiment is attached is placed on a mounting surface will be described with reference to Figs. 4 and 6 to 8. Fig. 8 is a perspective view showing a state in which a pole such as a utility pole to which a pole ratchet according to an embodiment of the present invention is attached is placed on a placement surface. Note that the same parts as those shown in Figs. 1 to 7 are given the same reference numerals, and the description of their configurations will be omitted. When a pole such as a utility pole 50 equipped with the pole pawl 1A according to this embodiment is placed on a mounting surface 51 in the state shown in Figure 6(a) or Figure 7(a) above, the state shown in Figure 6(b) or Figure 7(b) is obtained. In other words, the state shown in Figures 6(a) and 7(a) is a state in which the pillar body pawl 1A of this embodiment has slid or rotated circumferentially around the central axis of the pillar body, such as the utility pole 50, so that the surface (the surface having the connecting structure 10) that contacts the mounting surface 51 on the outer surface 50a of the pillar body, such as the utility pole 50, faces the mounting surface 51 (=first state). The states shown in Figures 6(b) and 7(b) are states in which the load (force P; see Figure 4(b)) of a pillar body, such as an electric pole 50, inserted into the through hole 3 of the pillar body pawl 1A of this embodiment is transmitted to the elastic body 9 via the bearing 4, causing the elastic body 9 to elastically deform (contract), pushing the bearing 4 into the rear side of the inner wall 3a, and causing the outer surface 50a of the pillar body, such as the electric pole 50, to come into contact with the inner surface S of the through hole 3 (=second state).

[0040] Moreover, by realizing the above-mentioned first state, it is possible to exert the above-mentioned effect 2. In other words, by using the pole pawl 1A according to this embodiment, it is possible to significantly reduce the risk of personal injury when handling a pole, which is a heavy object, such as a utility pole 50.

[0041] Furthermore, by realizing the second state as described above, a frictional force is generated at the contact portion between the outer surface 50a of the utility pole 50 and the inner surface S of the through hole 3, making it possible to effectively prevent a columnar body such as the utility pole 50 from sliding in the direction of its central axis. This makes it possible to preferably prevent the pole 50 or other such pillar from unintentionally falling out of the through hole 3 formed in the ratchet body 2 when the pole 50 or other such pillar is laid down and loaded onto a transport vehicle or the like, or placed on the loading surface 51 for storage. Therefore, according to the pillar body pawl 1A of this embodiment, it is possible to prevent the pillar body pawl 1A from unintentionally coming off the utility pole 50, etc., during the work of loading or storing the utility pole 50, etc., in a horizontal position using the pillar body pawl 1A. As a result, it is possible to preferably prevent the utility pole 50 or the like from unintentionally rolling in its circumferential direction during transportation or storage, resulting in personal injury, etc. Therefore, by using the pole body ratchet 1A according to this embodiment, it is possible to further improve safety when handling heavy column-shaped objects such as the utility pole 50 (=Effect 4). In particular, when the pole pawl 1A according to this embodiment is used and a pole such as a utility pole 50 is loaded in a horizontal position on a transport vehicle or the like for transport, the pole pawl 1A can prevent the utility pole 50 from slipping out and coming off, particularly when the transport vehicle decelerates or accelerates. In this case, safety during transport of the utility pole 50 can be improved.

[0042] In this embodiment, the pawl body 2 is made of rubber. In this case, when the load of the utility pole 50 acts on the inner surface S of the through hole 3 formed in the pawl body 2, the pawl body 2 itself is expected to be elastically deformed. In this case, when the load of a pillar such as a utility pole 50 acts indirectly on the elastic body 9 embedded in the inner wall 3a of the through hole 3, the internal space of the bottomed hole formed in the inner wall 3a for accommodating the bearing 4 and the elastic body 9 may be deformed, raising a concern that the elastic deformation of the elastic body 9 may be hindered. In consideration of these circumstances, in order to allow for a change in three-dimensional shape when force P (see Figure 4(b)) is applied to the elastic body 9, i.e., for the width of the elastic body 9 to increase, in this embodiment, the bearing 4 and the elastic body 9 are housed in the second case 14 and embedded in the inner wall 3a of the through hole 3. However, if the size of the bottomed hole formed in the inner wall 3a of the through hole 3, i.e., the bottomed hole for accommodating the bearing 4 and the elastic body 9, can be appropriately adjusted to allow for changes in the three-dimensional shape of the elastic body 9 without any problems, the column pawl 1A in this embodiment does not need to be provided with the second case 14.

[0043] Furthermore, in the pillar pawl 1A of this embodiment, if the pawl body 2 and the elastic body 9 are both made of rubber, it is necessary to set the deformability of each of them when an external force is applied to them so that the elastic body 9 is greater than the pawl body 2.

[0044] Here, other functions and effects of the pillar pawl 1A according to this embodiment will be described with reference to Figs. Fig. 9 is a side view showing a state in which a pole such as a utility pole to which a pole ratchet according to an embodiment of the present invention is attached is loaded onto a transport vehicle. Also, Fig. 10 is a cross-sectional view for explaining another method of using the pole ratchet according to an embodiment of the present invention. Note that the same parts as those shown in Figs. 1 to 8 are given the same reference numerals, and the description of their configurations will be omitted. The vertical height of the pole pawl 1A according to this embodiment is greater than the diameter of the pole to which it is to be attached, such as the utility pole 50. Therefore, when a pole such as the utility pole 50 to which the pole pawl 1A according to this embodiment is attached is loaded onto the loading platform 52a of the transport vehicle 52, it is possible to easily check by visual inspection whether the pole pawl 1A is attached or not at a position away from the pole such as the utility pole 50 (=Effect 5). In this case, when loading a pole such as a utility pole 50 onto the loading platform 52a of the transport vehicle 52, there is no need for a person to approach the pole such as a utility pole 50 to check whether the pole ratchet 1A is attached or not. Therefore, when using the column body ratchet 1A of this embodiment, there is no need for a person to go near a column body, such as a heavy utility pole 50, to check whether the column body ratchet 1A is attached or not, which makes it possible to preferably prevent personal injury accidents caused by unintentionally touching a column body, such as a utility pole 50, that has rolled over during loading work.

[0045] Furthermore, when the pole body pawl 1A according to this embodiment is used, as shown in FIG. 10, the side surfaces of the pole body pawls 1A attached to a pole body such as a utility pole 50 can be brought into close contact with each other and assembled together, so that a large number of poles such as utility poles 50 can be stored and kept compactly in a horizontal position. In this case, a larger number of poles such as utility poles 50 can be stored in a small space, which contributes to effective use of storage space (=Effect 6).

[0046] In addition, when using the pole pawl 1A of this embodiment, the pawl body 2 attached to the outer surface 50a of a pole such as a utility pole 50 can be freely slid or rotated on the peripheral surface of the pole. For this reason, even when the side surfaces of the pole pawls 1A attached to a pole such as a utility pole 50 are brought into close contact with each other and assembled together as shown in FIG. 10, the degree of rotation (orientation) of the pawl body 2 relative to the central axis 50b of the pole such as the utility pole 50 can be easily adjusted. In other words, when the pole body pawl 1A of this embodiment is used, when a pole body such as a utility pole 50 to which this pole body pawl 1A is attached is hung by slinging, the pawl body 2 rotates automatically and with almost no resistance due to friction or the like, as shown in Figures 5(b) and 6(a) above (=Effect 2). For this reason, even when placing a pillar body such as an electric pole 50 as shown in FIG. 10 and placing a new pillar body pawl 1A between pillar body pawls 1A that have already been placed, there is no need to manually adjust the amount of rotation (orientation) of the newly placed pillar body pawl 1A relative to the central axis 50b of the pillar body such as the electric pole 50. In other words, when using the pillar body pawl 1A of this embodiment, the pillar body pawl 1A attached to a pillar body such as an electric pole 50 comes into contact with (gets caught on) another pillar body pawl 1A, and the pawl body main body 2 naturally slides or rotates circumferentially on the outer surface 50a of the pillar body such as an electric pole 50 and settles into an optimal position, so there is no need to manually adjust the amount of rotation (direction) of the pillar body pawl 1A (=Effect 7). Therefore, according to the pole pawl 1A according to this embodiment, the work of stacking poles such as utility poles 50 can be performed safely and efficiently.

[0047] [3. Modifications of the present invention] Finally, a modified example of the pillar pawl according to this embodiment will be described with reference to FIG. Fig. 11 is a cross-sectional view of a pillar pawl according to a modified example of this embodiment. Note that the same parts as those shown in Figs. 1 to 10 are given the same reference numerals, and the description of their configurations will be omitted. <3-1; About elastic bodies> In a pillar pawl 1B according to a modified example of this embodiment, a coil spring 15 may be used instead of the rubber elastic body 9 in the pillar pawl 1A (optional component). In this case as well, it is possible to obtain the same functions and effects as when the elastic body 9 made of rubber is used. In other words, in the case of the pillar pawl 1B relating to the modified example shown in Figure 11, the bearing 4 is pushed into the back side of the inner wall 3a of the through hole 3 due to the load of the pillar body, such as a utility pole 50, inserted into the through hole 3, and when the bearing 4 is released from the load of the pillar body, the bearing 4 protrudes again toward the center of the through hole 3. As a result, even when using the column body pawl 1B relating to the modified example, when the utility pole 50 is placed in a lying position on the support surface 51, the outer surface 50a of the utility pole 50 and the inner surface S of the through hole 3 can be brought into contact with each other, and a frictional force can be generated between them. Therefore, it is possible to preferably prevent a pole such as a utility pole 50 from falling out of the through hole 3 during use of the pole pawl 1B according to the modified example.

[0048] <3-2: Reinforcement members for fixed structures> The fixing structure 11 of the column pawl stopper 1B in the modified example may include a reinforcing member 16 made of, for example, a metal plate or a hard resin material, arranged around the screw receiver 12 and on the surface where the segment pieces 2a and 2b contact each other, as shown in Figure 11 (optional component). In this case, it is possible to prevent the screw receiver 12 from coming off the divided piece 2a or the divided piece 2b, and to prevent the divided piece 2a or the divided piece 2b around the fixing structure 11 from being damaged due to accumulated fatigue of the members. Therefore, when the fixing structure 11 includes the reinforcing member 16, the durability of the pillar pawl 1B according to the modified example can be improved.

[0049] <3-3: Reinforcement members for connecting structure> As shown in FIG. 1(b) above, when a hinge 10a is used as the connecting structure 10 in the pillar pawl 1A according to this embodiment, the hinge 10a is screwed to the segments 2a and 2b. In this case, the split pieces 2a and 2b of the pillar pawl 1A according to this embodiment are repeatedly opened and closed, so that the screw fastening portion of the hinge 10a is easily deteriorated. In consideration of these circumstances, the column pawl 1B according to the modified example may be provided with a reinforcing member 17, as shown in FIG. 11, interposed between the segment 2a or segment 2b and the hinge 10a and made of, for example, a metal plate or a hard resin material (optional component). In this case, when screwing the hinge 10a, the screw 18 is not screwed directly into the segment 2a or segment 2b, so that the progression of deterioration of the segment 2a or segment 2b around the portion where the screw 18 is screwed can be effectively prevented. Therefore, by providing the pillar pawl 1B according to the modified example with the reinforcing member 17 between the hinge 10a and the divided piece 2a or between the divided piece 2b, the durability of the pillar pawl 1B can be improved.

[0050] Furthermore, when a metal plate is used as the reinforcing member 17, the reinforcing member 17 can also be used as a weight for adjusting the position of the center of gravity of the pillar pawl 1B. More specifically, even when a lightweight material such as a durable sheet material is used as the connecting structure 10 instead of the metal hinge 10a, the provision of the reinforcing member 17 allows the position of the center of gravity of the pillar body pawl 1B according to the modified example to be closer to the surface on which the connecting structure 10 is provided. In this case, it is not essential to use the hinge 10a as the connecting structure 10 in the pillar body pawl 1B according to the modified example. As a result, even if the pillar pawl 1B according to the modified example does not use the metal hinge 10a as the connecting structure 10, the above-mentioned effect 2 can be achieved.

[0051] <3-4: Installation position of connecting structure> In the pillar pawls 1A and 1B according to this embodiment, a groove 2c having a concave cross section is provided on the surface of the pawl body 2 that comes into contact with the mounting surface 51, and a connecting structure 10, for example a hinge 10a, is provided in this groove 2c. This is to prevent the connecting structure 10 from coming into contact with the mounting surface 51 and being damaged when the pawl body 2 is placed on the mounting surface 51. Therefore, in the case where the surface of the pawl body 2 having the connecting structure 10 does not come into contact with the mounting surface 51, the pawl body 2 does not need to have the groove portion 2c. In this case, in order to ensure that the above-mentioned effect 2 is achieved, the center of gravity of the pawl body 2 can be appropriately adjusted by, for example, placing a weight at a desired position inside the pawl body 2 so that the surface of the pawl body 2 that comes into contact with the mounting surface 51 moves smoothly to a position opposite the mounting surface 51.

[0052] <3-5: How to attach pole stoppers to poles such as utility poles> In this embodiment, an example is described in which a pole body ratchet according to this embodiment (e.g., pole body ratchet 1A) is attached to a pole body such as an electric pole 50 that is suspended by a sling or the like. However, the pole body ratchet 1A, 1B according to this embodiment may be placed in an open state on the mounting surface 51, and after the pole body such as an electric pole 50 is moved to the open through-hole 3, the segment pieces 2a and 2b may be placed in a closed state. In this case, by suspending a pole such as a utility pole 50 to which the pole ratchet 1A, 1B according to this embodiment is attached, the above-mentioned effect 2 can be achieved.

[0053] <3-6;Material of the ratchet body> In the pillar pawls 1A and 1B according to the present embodiment, the pawl body 2 made of rubber is used as an example. However, the pawl body 2 may be formed by combining a plurality of parts. More specifically, for example, the outside of the pawl body 2 (segment pieces 2a and 2b) may be made of wood or a hard resin material, and the inside, that is, the inner wall 3a of the through hole 3, may be made of a rubber material (not shown, optional component). In this case, the reinforcing members 16 and 17 may not be provided. Therefore, even when the pawl body 2 is formed by combining a plurality of materials, the effects 1 to 7 can be achieved by using the pillar pawl 1A according to this embodiment. Depending on the material selected, it is possible to expect the effect of reducing the weight of the pawl body 2 while increasing its strength.

[0054] <3-7; External shape of the ratchet body> In the embodiment of the pawl for pillar 1A, 1B, the pawl body 2 has an outer shape of a regular triangular pillar as an example, but the three-dimensional shape of the pawl body 2 may be other than a regular triangular pillar. More specifically, the three-dimensional shape of the pawl body 2 in the pillar pawl 1A, 1B in this embodiment may be an isosceles triangular prism whose vertical cross-sectional shape relative to its central axis has an obtuse angle on the vertically upward side and whose side in contact with the mounting surface 51 is the longest (not shown, optional component). In this case, compared to when the outer shape of the pawl body 2 is a regular triangular prism, when a pillar body such as a utility pole 50 equipped with the pillar body pawls 1A, 1B of this embodiment is placed on the mounting surface 51, the risk that the pillar body such as the utility pole 50 will roll in its circumferential direction due to impact such as lateral shaking can be reduced. As a result, when the three-dimensional shape of the pawl body 2 is an isosceles triangular prism as described above, the stability and safety of the pillar body pawls 1A, 1B according to this embodiment can be further improved.

[0055] The three-dimensional shape of the pawl body 2 in the pillar pawl 1A, 1B according to this embodiment may be a regular polygonal prism other than a triangular prism. More specifically, the three-dimensional shape of the pawl body 2 may be a regular square prism or a regular hexagonal prism (optional component). In this case, when a pillar body such as an electric pole 50 equipped with the pole pawls 1A, 1B according to this embodiment is placed on the mounting surface 51, the effect of preventing the pillar body such as an electric pole 50 from rolling in the circumferential direction is reduced. However, as shown in FIG. 10, for example, the pillar body pawls 1A, 1B can be used as a spacer when storing or storing a plurality of pillar bodies such as electric poles 50 in a small space. In this case, the poles such as the utility poles 50 can be kept close to each other without touching each other, so that the space for storage and keeping can be used effectively.

[0056] <3-8; Number of pieces> In this embodiment, the pawl body 2 is described as being made up of two divided pieces 2a, 2b, but the number of divided pieces may be two or more. However, as the number of segments increases, the number of parts constituting the pillar body pawls 1A, 1B according to this embodiment also increases, which is expected to result in disadvantages such as a higher risk of damage to the pillar body pawls 1A, 1B and increased effort required for their manufacture. For this reason, it is preferable that the number of segments constituting the pawl body 2 is as small as possible.

[0057] <3-9; Number of connecting structures and fixed structures> In this embodiment, an example is described in which the pawl body 2 is provided with two connecting structures 10 and two fixing structures 11, but the number of these structures is not limited to that shown in the figure. More specifically, the longer the pawl body 2 is in the direction of its central axis, the greater the effect of preventing a column body, such as a utility pole 50, held by the column pawls 1A, 1B in this embodiment from sliding in the direction of its central axis. In this case, by providing two or more connecting structures 10 or fixing structures 11, the strength and the like of the pillar pawls 1A and 1B according to this embodiment can be improved. In addition, in the columnar pawl fasteners 1A and 1B according to this embodiment, an example has been described in which both a connecting structure 10 and a fixing structure 11 are provided, but the columnar pawl fasteners may also be configured with a fixing structure 11 that integrates multiple segments (e.g., three segments not shown) and adjacent segments without providing the connecting structure 10 (optional component). In this case, although it takes some time to attach and detach the pole to the pole such as the utility pole 50, the pole has the same function and effect as the pole pawls 1A and 1B according to the present embodiment in terms of its function as a pole pawl.

[0058] <3-10; Number of column stoppers to be attached to the column> In the above-mentioned Figures 8 and 9, an example is described in which two pillar body pawls (pillar body pawl 1A or pillar body pawl 1B) according to this embodiment are attached to one attachment object (pillar body such as utility pole 50), but the number may be changed appropriately depending on the length of the pillar body to be attached. Furthermore, when the pillar to be attached has a non-uniform diameter, particularly like the utility pole 50, it is desirable to prepare a pillar ratchet (pillar ratchet 1A or pillar ratchet 1B) having a diameter of the through hole 3 corresponding to the diameter of the position where the pillar ratchet of this embodiment (pillar ratchet 1A or pillar ratchet 1B) will be attached. In this case, the risk that an object to be attached, such as a utility pole 50, will come off the pole pawls 1A, 1B according to this embodiment while they are in use can be significantly reduced. This can improve safety during use of the pillar pawls 1A and 1B according to this embodiment.

[0059] Furthermore, when preparing multiple types of pillar body pawls (pillar body pawls 1A or pillar body pawls 1B) having a diameter of the through hole 3 corresponding to the diameter of the mounting position as described above, a mark such as a different color on the surface of the pawl body 2 may be provided so that they can be identified and distinguished from each other (optional component). In this case, the work of mounting the pillar body pawls 1A, 1B according to this embodiment to the pillar body to which they are to be mounted can be carried out quickly and accurately. In addition, the markings may be made in the form of figures, symbols, or a specific diameter of the through-hole 3, in addition to color coding. [Industrial Applicability]

[0060] INDUSTRIAL APPLICABILITY As described above, the present invention is a pole stopper that can prevent a heavy pole such as an electric pole from rolling in its circumferential direction when the pole is transported or stored, and can be used in technical fields related to safety equipment for power transmission facilities and building materials. [Explanation of symbols]

[0061] DESCRIPTION OF SYMBOLS 1A, 1B... Pole body pawl 2... Pawl body 2a, 2b... Divided pieces 2c... Groove 3... Through hole 3a... Inner wall 4... Bearing 5... Ball 6... Roller 7... Shaft 8... First case 9... Elastic body 10... Connecting structure 10a... Hinge 11... Fixing structure 12... Screw receiver 13... Screw 14... Second case 15... Coil spring (elastic body) 16... Reinforcing member 17... Reinforcing member 18... Screw 50... Utility pole 50a... Outer surface 50b... Central axis 51... Placement surface 52... Transport vehicle 52a... Loading platform S... Inner surface

Claims

1. A pawl that is attached to a peripheral side surface of a heavy pillar having a circular cross section perpendicular to a central axis and prevents the pillar from rolling in a peripheral direction during transportation or storage, a pawl body that is a polygonal prism and has a through hole formed on or parallel to a central axis thereof to receive the prism; A plurality of bearings are provided in spots on the inner wall of the through hole to rotate the pawl body in the circumferential direction of the column body; an elastic body interposed between the inner wall of the through hole and the bearing, causing the bearing to protrude into and retract from the inner surface of the through hole; A pawl for a pillar, characterized in that the inner surface of the through hole is provided with an anti-slip material or consists of the anti-slip material.

2. The bearing is A ball that contacts the outer surface of the cylinder and slides in a circumferential direction of the cylinder; a roller that supports the ball and rolls the ball in a desired direction; 2. The pawl of claim 1, further comprising a case for housing said balls and said rollers.

3. The pawl body is made up of a plurality of segments, a connecting structure that connects the divided pieces integrally in series; 3. The pole stopper according to claim 1, further comprising a fixing structure for maintaining the connected segments in a closed state.

4. A pawl for a pillar according to any one of claims 1 to 3, characterized in that the pawl body is made of rubber.

5. A pawl for a pillar according to any one of claims 1 to 4, characterized in that the pawl body is a triangular pillar.

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