Main rope support part and main rope support device

Abstract

To provide a main rope support part that supports a main rope that does not require replacing operation of a safety belt when a worker moves with the safety belt attached to the main rope, and a main rope support device including the main rope support part.SOLUTION: A main rope support part has a body part including a hollow portion, for supporting a main rope to which a safety belt is attached. The body part further has a gap part arranged along a longitudinal direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a life rope support part that supports a life rope when working at height, and to a life rope support device having the life rope support part. [Background technology]

[0002] When working at height, workers must wear safety belts to prevent falls from the height. Article 521 of the Safety and Health Regulations stipulates that "When an employer requires workers to use safety belts when working at a height of 2 meters or more, the employer must provide equipment for the safe attachment of the safety belts."

[0003] For example, JP 2006-144452 A discloses a life rope mounting fixture that is lightweight, easy to transport, and has a simple structure that can firmly attach a life rope; the fixture "includes a crossbar section consisting of two crossbars 11A, B supported on a shaft so that they can freely rotate relative to one another, and a small-diameter single clamp attached to the end of the crossbar for fixing at least two main column reinforcements 2A, B that are arranged in a structure during construction, and multiple rings that are life rope mounting sections for attaching the life rope."

[0004] The metal fittings disclosed in the above publication are fixed to the main column reinforcement bars arranged in a structure under construction, and life ropes 21 and 22 are attached to them.

[0005] However, in order for a worker to move between main rope 21 and main rope 22, he must first remove the safety belt attached to main rope 21 and then reattach it to main rope 22. In this case, when a worker carries construction materials, he must temporarily place the construction materials on the scaffolding, remove the safety belt attached to main rope 21, and then reattach the removed safety belt to main rope 22, after which he must lift up the temporarily placed materials and carry them again.

[0006] In that case, the safety belt is removed from the life rope 21, which poses a problem that the safety of the worker at that time cannot be ensured. In particular, at corners of buildings where the life rope cannot be arranged, the safety belt must be transferred from the life rope to which it was attached to to another life rope, which poses a problem that safety cannot be ensured during this transfer. In addition, when transferring the safety belt, construction materials must be temporarily placed on the scaffolding, which is a dangerous task. [Prior art documents] [Patent documents]

[0007] JP 2006-144452 A Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above-mentioned situation, and its object is to provide a life rope support part that supports a life rope and has a life rope support device that does not require the operator to change the safety belt when attaching the safety belt to the life rope and moving around. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the lifeline support part in the first aspect has a main body part with a hollow portion for supporting the lifeline to which the safety belt is attached, and the main body part further has a gap part arranged along the longitudinal direction.

[0010] In addition, the main rope support part in the second aspect has a main body part with a hollow portion for supporting the main rope to which the safety belt is attached, and the main body part is bent when viewed in a plane and further has a gap part arranged along the longitudinal direction and so as to be bent when viewed in a plane.

[0011] In addition, the lifeline support device in a third aspect has a main body portion with a hollow portion for supporting a lifeline to which a safety belt is attached, and a slide portion for attachment to the safety belt, the main body portion further having a gap portion arranged along the longitudinal direction, and the slide portion has a lifeline holding portion for holding the lifeline, and an attachment portion for attaching the safety belt, and when the lifeline is arranged within the main body and the lifeline holding portion is moved along the lifeline, the attachment portion moves in the gap portion.

[0012] In addition, the lifeline support device in the fourth aspect has a main body portion with a hollow portion for supporting a lifeline to which a safety belt is attached, and a slide portion for attachment to the safety belt, the main body portion further having a gap portion arranged along the longitudinal direction and so as to bend in a planar view, and the slide portion has a lifeline holding portion for holding the lifeline and an attachment portion for attaching the safety belt, and when the lifeline is placed within the main body and the lifeline holding portion is moved along the lifeline, the attachment portion moves in the gap portion.

[0013] In addition, the main rope support part in a fifth aspect is the same as in the first aspect and the second aspect, in that the main body part has an attachment part for fixing the main body part.

[0014] In addition, the main rope support device in a sixth aspect is based on the third to fourth aspects, and further includes a main body portion having an attachment portion for fixing the main body portion. Effect of the Invention

[0015] Because the present invention is constructed and operates as described above, it is possible to provide a life rope support part that supports a life rope so that a worker does not need to change the safety belt when attaching the safety belt to the life rope and moving around, and a life rope support device having the life rope support part. [Brief description of the drawings]

[0016] [Figure 1] A is a front view of the life rope support part, and B is a cross-sectional view of the IB-IB line of A. [Diagram 2] An oblique view of the main rope support part. [Diagram 3] FIG. 1A is a plan view of the life rope support part of the second embodiment; FIG. 1B is a cross-sectional view taken along line IIIB-IIIB of FIG. 1A; and FIG. 1C is a front view of the life rope support part of the second embodiment. [Figure 4] 3A is a conceptual perspective view seen from diagonally below in the direction IV of FIG. 3A. [Diagram 5] 1A is a front view of the sliding portion, and B is a VB-VB line end view of A. [Figure 6] FIG. [Figure 7] FIG. 1 is a conceptual plan view showing a worker moving on scaffolding. [Figure 8] This is a conceptual diagram showing how a straight life rope is supported by a life rope support device, as viewed from direction VIII in Figure 7. [Figure 9] 8 is a partially enlarged conceptual diagram of Figure 7 showing how the straight life rope is supported by the life rope support device. [Figure 10] This is a conceptual diagram showing how a straight life rope is supported by a life rope support device as viewed from the X direction in Figure 7. [Figure 11] A conceptual diagram showing how a curved life rope is supported by the life rope support device of the second embodiment.

[0017] The lifeline support device 10 in the first embodiment will be described below with reference to the illustrated embodiment. For example, in conventional construction work, a worker attaches a safety belt 400 to a lifeline 300 to prevent the worker from falling from a scaffolding 460, thereby preventing such accidents. The lifeline 300 is fixed to a pillar 450 attached to the scaffolding 460, but the fixed pillar 450 does not allow the safety belt 400 to be attached, and when the worker moves, the safety belt 400 must be changed to avoid the pillar 450. However, by using the lifeline support device 10 in the first embodiment, the worker can move around the scaffolding 460 without changing the safety belt 400 (see FIG. 7, for example).

[0018] The master rope support device 10 in the first embodiment has a master rope support part 11 and a slide part 160 described later, and the master rope support part 11 is suitable for supporting a straight master rope 300 and has a main body part 20. This main body part 20 has a hollow part 20a inside and is approximately tubular. In other words, it is approximately hollow cylindrical, but it is preferable that it is not cylindrical with a circular end view, but has a gap part 30 which is a gap described later and is partially circular in end view.

[0019] In addition, one end 21 arranged at one end of the main body 20 in the main rope support part 11, and the other end 25 arranged at the other end, are both open, and the main rope 300 can be arranged to be inserted into the hollow portion 20a inside the tubular main body 20.

[0020] Moreover, the main body 20 has an upper end 23 and a lower end 27 arranged along the longitudinal direction from one end 21 to the other end 25, and has a gap portion 30 between the upper end 23 and the lower end 27. That is, it is preferable that the gap portion 30 has a missing arc shape in an end view of the main body 20. However, it is sufficient that a part of the circular cross-sectional shape is missing and the missing part is the gap portion 30. As described above, the main body 20 has an approximately hollow cylindrical shape because the main body 20 has an arc shape with the gap portion 30 rather than a circular shape in an end view of the main body 20.

[0021] Moreover, it is preferable that the width (size) of the gap of the gap portion 30 is smaller than the thickness of the master rope 300. This is because the master rope 300 inserted into the main body portion 20 will not come off the gap portion 30, and the master rope 300 can be held by the main body portion 20 by remaining in the internal hollow portion 20a. Note that the direction from one end portion 21 to the other end portion 25 of the main body portion 20, or the direction from the other end portion 25 to the one end portion 21, is defined as the longitudinal direction, and the gap portion 30 is arranged along this longitudinal direction.

[0022] Moreover, the main body portion 20 has a first inclined portion 22 arranged so as to be inclined toward the central portion 20b of the main body portion 20 in a front view. Moreover, the main body portion 20 has a second inclined portion 26 arranged so as to be inclined toward the central portion 20b of the main body portion 20 in a front view. The main body portion 20 has a third inclined portion 28 arranged so as to be inclined toward the central portion 20b of the main body portion 20 in a front view. Moreover, the main body portion 20 has a fourth inclined portion 29 arranged so as to be inclined toward the central portion 20b of the main body portion 20 in a front view.

[0023] The upper end 23 is disposed along the longitudinal direction of the main body 20. The lower end 27 is also disposed along the longitudinal direction of the main body 20. The main body 20 has a shape in which a plate-like object is rolled into an approximately hollow cylinder, with the upper end 23 constituting one side of the plate-like object and the lower end 27 constituting the other side of the plate-like object. The gap 30 is formed between the upper end 23 and the lower end 27. That is, the gap 30 is, so to speak, formed between one side and the other side of the plate-like object when the plate-like object is rolled into an approximately hollow cylinder.

[0024] The first inclined portion 22 is connected to one end portion 21 and an upper end portion 23, the upper end portion 23 is connected to a third inclined portion 28, and the third inclined portion 28 is connected to the other end portion 25. The second inclined portion 26 is connected to one end portion 21 and a lower end portion 27, the lower end portion 27 is connected to a fourth inclined portion 29, and the fourth inclined portion 29 is connected to the other end portion 25. The first inclined portion 22, the second inclined portion 26, the third inclined portion 28, and the fourth inclined portion 29 can guide the slide mounting portion 180 in the slide portion 160 to the gap portion 30, as described later.

[0025] The main body 20 also has an attachment part 40 having a male thread 41. This attachment part 40 is for fixing the main body 20 to the pillar part 450. The attachment part 40 is arranged so as to protrude from the back part of the central part 20a. The attachment part 40 is for fixing the master rope support part 11 to the pillar part 450 via, for example, a clamp 480, and is arranged on the main body 20 as described above (see, for example, FIG. 7).

[0026] Regarding the positions of the mounting part 40 and the gap 30, when the mounting part 40 is located at the 9 o'clock position, it is preferable to locate the gap 30 at the 4 o'clock position according to the cross-sectional view of the main body 20. If the gap 30 is located at the 6 o'clock position, the master rope 300 hanging down due to gravity will get caught in the gap 30, causing an obstacle when the sliding part 160 moves through the gap 30.

[0027] Next, the second life rope support device 100 in the second embodiment will be described. The second life rope support device 100 has a second life rope support part 110 and a slide part 160 described later, and the second life rope support part 110 can be arranged at the bent bent part 310 of the life rope 300, and is preferably arranged at a corner part 465 of the scaffolding 460. Like the life rope support device 10 in the first embodiment, the second life rope support device 100 in the second embodiment also allows movement on the scaffolding 460 without changing the safety belt 400.

[0028] The second main rope support part 110 is suitable for supporting the bent bent portion 310 of the main rope 300 as described above, and has a second main body part 120. This second main body part 120 has a hollow part 120a therein and is approximately tubular. In other words, it is approximately hollow cylindrical, but it is preferable that it is not cylindrical in end view, circular, but has a gap part 130 that will be described later and is partially circular in end view.

[0029] The second main body portion 120 has a different shape from the above-mentioned main body portion 20, and is bent at approximately 90 degrees in a plan view. That is, it is preferable that the second main body portion 120 is bent in an L-shape in a plan view. In addition, both one end portion 121 and the other end portion 125 of the second main body portion 120 are open, and the second main body portion 120 has an approximately hollow cylindrical shape so that the master rope 300 can be inserted into the hollow portion 120a inside the second main body portion 120.

[0030] Further, the second main body portion 120 has an upper end portion 123 and a lower end portion 127 arranged along the longitudinal direction from one end portion 121 to the other end portion 125, and has a gap portion 130 between the upper end portion 123 and the lower end portion 127. That is, in an end view of the second main body portion 120, it is preferable that the gap portion 130 has a missing circular arc shape. However, it is sufficient that a part of the cross-sectional shape is missing and the missing part is the gap portion 130. As described above, the reason why the second main body portion 120 has a bent hollow cylinder shape in a plan view is because the second main body portion 120 has a circular arc shape having the gap portion 130 in an end view, not a circular shape.

[0031] Also, the width (size) of the gap of the gap 130 is preferably smaller than the thickness of the master rope 300, similar to the gap 30. This is because the master rope 300 inserted into the second main body 120 does not come off the gap 130, and the master rope 300 remains in the internal hollow portion 120a, so that the second main body 120 can hold the master rope 300. Note that the direction from one end 121 to the other end 125 of the second main body 120, or the direction from the other end 125 to the one end 121, is defined as the longitudinal direction, and the gap 130 is disposed along the longitudinal direction. Note that the longitudinal direction in this case is, for example, in FIG. 4, a curved shape that is bent at approximately 90 degrees, i.e., bent in an L-shape.

[0032] The upper end 123 is disposed along the longitudinal direction of the second main body 120. The lower end 127 is also disposed along the longitudinal direction of the second main body 120. The second main body 120 has a shape obtained by rolling a plate into a hollow cylinder and bending it into an L-shape in a plan view, with the upper end 123 constituting one side of the plate and the lower end 127 constituting the other side of the plate. The gap 130 is formed between the upper end 123 and the lower end 127.

[0033] Moreover, the second main body portion 120 has a first inclined portion 122 arranged so as to be inclined toward the central portion 120b of the second main body portion 120 in a front view. Moreover, the second main body portion 120 has a second inclined portion 126 arranged so as to be inclined toward the central portion 120b of the second main body portion 120 in a front view. Moreover, the second main body portion 120 has a third inclined portion 128 arranged so as to be inclined toward the central portion 120b of the second main body portion 120 in a front view. Moreover, the second main body portion 120 has a fourth inclined portion 129 arranged so as to be inclined toward the central portion 120b of the second main body portion 120 in a front view.

[0034] The first inclined portion 122 is connected to one end 121 and an upper end 123, the upper end 123 is connected to a third inclined portion 128, and the third inclined portion 128 is connected to the other end 125. The second inclined portion 126 is connected to one end 121 and a lower end 127, the lower end 127 is connected to a fourth inclined portion 129, and the fourth inclined portion 129 is connected to the other end 125. The first inclined portion 122, the second inclined portion 126, the third inclined portion 128, and the fourth inclined portion 129 can guide the slide mounting portion 180 in the slide portion 160 to the gap portion 130, as described later.

[0035] The second main body portion 120 also has a second mounting portion 140 having a male thread 141. This second mounting portion 140 is for fixing the second main body portion 120 to the pillar portion 450. The second mounting portion 140 is arranged so as to protrude from the back of the central portion 121a. The second mounting portion 140 is for fixing the second master rope support portion 110 to the pillar portion 450, for example, via a clamp 480, and is arranged on the second main body portion 120 as described above (for example, see FIG. 7).

[0036] Regarding the positions of the second mounting portion 140 and the gap portion 130, when the second mounting portion 140 is disposed in the 9 o'clock direction, it is preferable to dispose the gap portion 130 in the 4 o'clock direction according to the end view of the second main body portion 120. If the gap portion 130 is disposed in the 6 o'clock direction, the master rope 300 hanging down due to gravity will be caught in the gap portion 130, causing an obstacle when the sliding portion 160 moves through the gap portion 130.

[0037] Next, the sliding section 160 in the life rope support device 10 and the second life rope support device 100 will be described. The sliding section 160 connects the life rope 300 and the safety belt 400 while allowing the life rope 300 to slide. The sliding section 160 has a life rope holding section 170 that holds the life rope 300, and a slide mounting section 180 to which the safety belt 400 is attached. The life rope holding section 170 is preferably cylindrical, the life rope 300 can be inserted into its interior 171, and the life rope holding section 170 can be mounted to the life rope 300 so as to be able to slide. However, the life rope holding section 170 is not limited to being cylindrical, and it is sufficient if it is able to slide while holding the life rope 300.

[0038] Furthermore, the master rope holding part 170 can be inserted into the hollow part 20a or hollow part 120a of the main body part 20 and the second main body part 120. For example, the master rope holding part 170 can be inserted from the open one end part 21 or the other end part 25 and placed in the hollow part 20a. The master rope holding part 170 can be inserted from the open one end part 121 or the other end part 125 and placed in the hollow part 120a. However, the master rope holding part 170 is larger than the width of the gap part 30 or the gap part 130, and the master rope holding part 170 will not come off the gap part 30 or the gap part 130.

[0039] The slide mounting part 180 has a flat plate shape and has holes 181, 181 for mounting the safety belt 400. The carabiner 190 for connecting with the safety belt 400 can be detachably attached to the holes 181, 181. As described above, the slide mounting part 180 has a flat plate shape, so it can move through the gap 30 between the one side part 23 and the lower end part 27. That is, it is preferable that the plate thickness of the slide mounting part 180 is smaller than the width of the gap 30, that is, the gap between the upper end part 23 and the lower end part 27. Similarly, it is preferable that the plate thickness of the slide mounting part 180 is smaller than the width of the gap part 130, that is, the gap between the upper end part 123 and the lower end part 127.

[0040] Next, a method of using the master rope support device 10 in the first embodiment and the master rope support device 100 in the second embodiment will be described. Here, the slide part 160 can be applied to the master rope support part 11 in the first embodiment and the master rope support part 110 in the second embodiment. That is, the clamp 300 is fixed to the mounting column part 450 of the master rope support part 11 in the master rope support device 10, and the master rope 100 is placed in the hollow part 20a in the main body part 20. In this state, when the worker P who has attached the safety belt 400 to the slide part 160 moves on the scaffolding 460, the master rope holding part 170 in the slide part 160 slides relative to the master rope 300 (position A in Figures 8 and 9). Furthermore, when the worker P moves on the scaffolding 460, the main rope holding portion 170 in the slide portion 160 is inserted into the main body portion 20, and the slide mounting portion 180 can move through the gap portion 30 between the upper end portion 23 and the lower end portion 27 of the main rope support portion 11 in the main rope support device 10 in the first embodiment (position B in Figures 8 and 9).

[0041] In this case, when the slide portion 160 is about to contact the main body portion 20 of the master rope support portion 11 in the first embodiment, the master rope holding portion 170 in the slide portion 160 is about to be inserted into the hollow portion 20a. At this time, the slide mounting portion 180 may contact either the third inclined portion 28 or the fourth inclined portion 29 in the main body portion 20. Due to such contact, the slide mounting portion 180 is smoothly guided to the gap portion 30 while reducing the impact. At this time, the master rope holding portion 170 with the master rope 300 inserted is disposed in the hollow portion 20a of the main body portion 20, and the master rope holding portion 170 does not come off the gap portion 30, so the master rope 300 slides while being held by the main body portion 20, and at the same time, the slide mounting portion 180 can move in the Z direction in the gap portion 30. Therefore, the life rope 300 continues to be supported by the life rope support device 10 in the first embodiment, and at the same time, the worker wearing the safety belt 400 can safely move on the scaffolding 460 without releasing the connection to the life rope 300 (position C in Figs. 8 and 9). When the worker P moves in the direction opposite to the Z direction, when the life rope holding part 170 in the slide part 160 is about to be inserted into the hollow part 20a, the slide mounting part 180 may come into contact with either the first inclined part 22 or the third inclined part 26 in the main body part 20 (not shown).

[0042] The slide section 160 is also applied to the lifeline support device 100 in the second embodiment. In this case, the lifeline support device 100 is fixed to the corner portion 465 of the scaffolding 460, and the lifeline 300 is placed in the second main body portion 120. In this case, the lifeline 300 is also placed so as to be bent. In this state, when a worker who has attached a safety belt 400 to the slide section 160 moves on the scaffolding 460, the lifeline holding section 170 in the slide section 160 slides relative to the lifeline 300 (position D in FIG. 11). When the worker further moves on the scaffolding 460, the lifeline holding section 170 in the slide section 160 is inserted into the second main body portion 120, and the slide mounting section 180 can move through the gap portion 130 between the one side portion 123 and the lower end portion 127 of the lifeline support device 100 in the second embodiment.

[0043] In this case, when the slide section 160 is about to contact the second main body section 120 in the master rope support device 100 in the second embodiment, the slide mounting section 180 may contact either the third inclined section 128 or the fourth inclined section 129 in the second main body section 120 when the master rope holding section 170 in the slide section 160 is about to be inserted into the hollow section 120a. Due to such contact, the slide mounting section 180 is smoothly guided to the gap section 130 while reducing the impact. At this time, the master rope holding section 170 with the master rope 300 inserted is placed in the hollow section 120a of the second main body section 120, and the master rope holding section 170 does not come off from the gap section 130. Therefore, even if the master rope 300 is placed at the corner section 465 of the scaffolding 460, it slides while being held by the second main body section 120, and at the same time, the slide mounting section 180 can move in the Z direction in the gap section 130. Therefore, the life rope 300 continues to be supported by the life rope support device 100 in the second embodiment, and at the same time, the worker P wearing the safety belt 400 can safely move on the scaffolding 460 without releasing the connection to the life rope 300. When the worker P moves in the reverse direction, when the life rope holding part 170 in the slide part 160 is about to be inserted into the hollow part 20a, the slide mounting part 180 may come into contact with either the first inclined part 122 or the third inclined part 126 in the second main body part 120 (not shown).

[0044] In this way, by holding the main rope 300 for each span of the scaffolding 460 by the main rope support device 10 or the main rope support device 100 in the second embodiment, a worker wearing a safety belt 400 on the slide section 160 can move on the scaffolding 460 without removing the safety belt 400 from the main rope 300. This eliminates the need to temporarily place materials on the scaffolding 460, especially when transporting the materials, and makes it possible to ensure safety while satisfying the provisions of Article 521 of the Occupational Safety and Health Regulations. [Explanation of symbols]

[0045] 10. First embodiment of lifeline support device 11 1st main rope support section 20 Main body 20a Hollow part 20b central part 21 One end 23 Upper end 25 Other end 27 Lower end 30 Gap 40 Mounting part 100 Second embodiment of lifeline support device 110 1st main rope support section 120 Second main body part 120a Hollow part 120b central part 121 One end 123 Upper end 125 Other end 127 Lower end 130 Gap 140 Second mounting part 160 Slide section 300 Lifeline

Claims

1. a body portion having a hollow portion for supporting a lifeline to which a safety belt is attached; The main body portion further has a gap portion arranged along the longitudinal direction, and the main rope support portion.

2. a body portion having a hollow portion for supporting a lifeline to which a safety belt is attached; The main body portion is bent in a plan view, The main body portion further has a gap portion arranged along the longitudinal direction and bent in a planar view, and the main rope support portion.

3. a body portion having a hollow portion for supporting a lifeline to which a safety belt is attached; The main body portion includes a gap portion disposed along the longitudinal direction, and a life rope support portion further including the gap portion, A slide portion that is attached to the safety belt, The slide portion has a life rope holding portion for holding the life rope and an attachment portion for attaching the safety belt, When the life rope is disposed in the main body and the life rope holding part is moved along the life rope, The mounting portion is a lifeline support device that moves through the gap.

4. a body portion having a hollow portion for supporting a lifeline to which a safety belt is attached; The main body portion is bent in a plan view, The main body portion further includes a gap portion arranged along the longitudinal direction and bent in a plan view, and a life rope support portion, A slide portion that is attached to the safety belt, The slide portion has a life rope holding portion for holding the life rope and an attachment portion for attaching the safety belt, When the life rope is disposed in the main body and the life rope holding part is moved along the life rope, The mounting portion is a lifeline support device that moves through the gap.

5. The main body portion has an attachment portion for fixing the main body portion.

6. The lifeline support device according to claim 3 or 4, wherein the main body portion has an attachment portion for fixing the main body portion.

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