WO2023140306A1 - 張線器、張線器用のプレート部材、および、張線器の組立方法 - Google Patents
張線器、張線器用のプレート部材、および、張線器の組立方法 Download PDFInfo
- Publication number
- WO2023140306A1 WO2023140306A1 PCT/JP2023/001433 JP2023001433W WO2023140306A1 WO 2023140306 A1 WO2023140306 A1 WO 2023140306A1 JP 2023001433 W JP2023001433 W JP 2023001433W WO 2023140306 A1 WO2023140306 A1 WO 2023140306A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pin member
- traction
- plate member
- wire tensioner
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
Definitions
- the present invention relates to a wire tensioner, a plate member for the wire tensioner, and a method for assembling the wire tensioner.
- a wire tensioner for tensioning overhead electric wires is known.
- Patent Document 1 discloses a wire drawing device.
- Patent Literature 1 describes that the belt fixing pin breaks when the tension of the belt exceeds a predetermined value, making it impossible to use the apparatus of the present invention in an overloaded state.
- An object of the present invention is to provide a wire tensioning device, a plate member for the wire tensioning device, and a method for assembling the wire tensioning device that can accurately inform the operator that an excessive tension has been applied to the traction element.
- the present invention relates to a wire tensioner, a plate member for the wire tensioner, and a method for assembling the wire tensioner, which are described below.
- the plate member is detachably attached to the traction device; The wire tensioner according to (1) above, wherein the first portion of the plate member is arranged outside the traction device so as to be visible to a user.
- the traction device includes a first side and a second side opposite the first side;
- the first side wall of the traction device has a first elongated hole into which the first end of the pin member is inserted; the second side wall of the traction device has a second elongated hole into which the second end of the pin member is inserted;
- the direction in which the pin member is pulled by the pulling element is defined as the first direction
- the end of the first elongated hole portion on the first direction side is located on the first direction side relative to the end of the second elongated hole portion on the first direction side.
- the wire tensioner according to any one of (1) to (6) above, wherein the first portion is configured to be sandwiched between the pin member and the stopper member when the first portion is destroyed.
- the stopper member is a bolt screwed into the pulling device, a second pin member inserted into the hole of the pulling element, or a nut screwed into the second pin member inserted into the hole of the pulling element.
- the plate member has a notch, The wire tensioner according to any one of (1) to (8) above, wherein the notch defines a fracture starting point of the first portion.
- a mounting hole attached via a fixing member to a traction device having a rotating body that imparts a traction force to the traction element; a first receiving portion for receiving a pin member connected to the traction element;
- a plate member for a wire tensioner comprising: a first portion pressed by said pin member and broken by said pin member in response to a tension acting on said pulling element exceeding an allowable value.
- a method for assembling a wire tensioner comprising: fixing the plate member to the traction device.
- a wire tensioning device a plate member for the wire tensioning device, and a method for assembling the wire tensioning device, which can accurately inform the operator that an excessive tension has been applied to the traction element.
- FIG. 1 is a schematic two-sided view schematically showing the wire tensioner in the first embodiment.
- FIG. 2 is a schematic side view schematically showing part of the wire tensioner in the first embodiment.
- FIG. 3 is a schematic side view schematically showing part of the wire tensioner in the first embodiment.
- 4 is a cross-sectional view taken along the line BB in FIG. 3.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG. 2.
- FIG. FIG. 6 is a schematic cross-sectional view schematically showing part of a wire tensioning device in a first modification of the first embodiment.
- FIG. 7 is a schematic two-sided view schematically showing an example of the plate member.
- FIG. 8 is a diagram for explaining a modification of the plate member.
- FIG. 1 is a schematic two-sided view schematically showing the wire tensioner in the first embodiment.
- FIG. 2 is a schematic side view schematically showing part of the wire tensioner in the first embodiment.
- FIG. 3 is a
- FIG. 9 is a schematic cross-sectional view schematically showing how the pin member tilts after the plate member is destroyed.
- FIG. 10 is a schematic trihedral view schematically showing a portion of the wire tensioner in the first embodiment.
- FIG. 11 is a schematic two-sided view schematically showing the wire tensioning device in the second embodiment.
- FIG. 12 is a schematic side view schematically showing part of the wire tensioning device in the second embodiment.
- 13 is a cross-sectional view taken along line CC in FIG. 12.
- FIG. FIG. 14 is a schematic side view schematically showing part of the wire tensioning device in the second embodiment.
- 15 is a cross-sectional view taken along line DD in FIG. 14.
- FIG. FIG. 16 is a schematic two-sided view schematically showing the wire tensioning device in the third embodiment.
- FIG. 17 is a schematic side view schematically showing part of the wire tensioning device in the third embodiment.
- 18 is a cross-sectional view taken along line EE in FIG. 17.
- FIG. 19 is a schematic side view schematically showing part of the wire tensioner in the third embodiment.
- 20 is a cross-sectional view taken along line FF in FIG. 19.
- FIG. 21 is a schematic two-sided view schematically showing a plate member for a wire tensioner in the fourth embodiment.
- FIG. 22 is a schematic two-sided view schematically showing the main body of the wire tensioner.
- FIG. 23 is a schematic side view schematically showing the state after the placement step has been performed.
- FIG. 24 is a flow chart showing an example of a method for assembling a wire tensioner according to the embodiment.
- FIG. 25 is a diagram schematically showing how a wire rod such as an electric wire is being stretched using a wire stretching machine.
- the wire tensioning device 1, the plate member 7 for the wire tensioning device, and the method of assembling the wire tensioning device 1 in the embodiment will be described in detail with reference to the drawings.
- members having the same type of function are given the same or similar reference numerals. Further, repetitive descriptions of members denoted by the same or similar reference numerals may be omitted.
- first direction DR1 A direction opposite to the first direction DR1 is defined as a “third direction DR3”.
- second direction DR2 the direction from the second side portion 53 of the traction device 5 to the first side portion 52 of the traction device 5 is defined as “second direction DR2”.
- Second direction DR2 is typically a direction perpendicular to first direction DR1.
- FIG. 1 is a schematic two-sided view schematically showing a wire tensioning device 1A according to the first embodiment.
- the upper side of FIG. 1 shows a schematic side view, and the lower side of FIG. 1 shows a schematic bottom view.
- 2 and 3 are schematic side views schematically showing part of the wire tensioning device 1A in the first embodiment.
- 4 is a cross-sectional view taken along the line BB in FIG. 3.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG. 2.
- FIG. 2 and 5 show the state before the plate member 7 is destroyed, and FIGS. 3 and 4 show the state after the plate member 7 is destroyed.
- FIG. 2 and 5 show the state before the plate member 7 is destroyed, and FIGS. 3 and 4 show the state after the plate member 7 is destroyed.
- FIG. 6 is a schematic cross-sectional view schematically showing part of a wire tensioning device 1A in the first modification of the first embodiment.
- FIG. 7 is a schematic two-sided view schematically showing an example of the plate member 7. As shown in FIG. The upper side of FIG. 7 shows a schematic side view, and the lower side of FIG. 7 shows a schematic bottom view.
- FIG. 8 is a diagram for explaining a modification of the plate member 7.
- FIG. FIG. 9 is a schematic cross-sectional view schematically showing how the pin member 6 tilts after the plate member 7 is destroyed.
- FIG. 10 is a schematic trihedral view schematically showing a part of the wire tensioning device 1A in the first embodiment. A second side view (viewed along the second direction DR2) is described in the upper part of FIG. 10, a schematic plan view is described in the central part of FIG. 10, and a first side view (viewed along the direction opposite to the second direction DR2) is described in the bottom part of FIG.
- the wire tensioner 1A in the first embodiment is used, for example, for tensioning wires such as overhead wires.
- the wire tensioner 1A includes a first member 2, a second member 3, a traction element 4, a traction device 5, a pin member 6, and a plate member 7.
- the first member 2 is a member that can be attached to the first attachment object.
- the first member 2 includes an arbitrary attachment portion 21 that can be attached to the first attachment object.
- the mounting portion 21 may have a first plate portion 21a, a second plate portion 21b, and a bolt 21c connecting the first plate portion 21a and the second plate portion 21b.
- each of the first plate portion 21a and the second plate portion 21b constitutes a part of the U-shaped plate member 21p.
- the first attachment object is, for example, a wire gripper F1 (see FIG. 25 if necessary) capable of gripping an electric wire such as an overhead electric wire.
- a wire gripper F1 capable of gripping an electric wire such as an overhead electric wire.
- the first object to be attached is appropriately selected according to the type of wire rod to which tension is to be applied, the content of the work to which tension is applied, and the like.
- the first member 2 comprises a pulley 25 that guides the movement of the traction element 4 (more specifically the wire 4a).
- the traction element 4 is doubled between the first member 2 and the traction device 5, it is possible to apply a greater tension to the wire (for example, an electric wire such as an overhead wire).
- the traction element 4 (more specifically the wire 4a) is folded back at the pulley 25 and can be taken up by a body of rotation 51 which will be described later.
- the second member 3 is a member that can be attached to the second attachment object.
- the second member 3 includes an optional second attachment portion 31 that can be attached to a second attachment object.
- the second attachment portion 31 may have a third plate portion 31a, a fourth plate portion 31b, and a bolt 31c connecting the third plate portion 31a and the fourth plate portion 31b.
- each of the third plate portion 31a and the fourth plate portion 31b constitutes a part of the U-shaped plate member 31p.
- the second attachment object is, for example, a flexible member F2 attached to a utility pole or the like (see FIG. 25 if necessary).
- the second object to be attached is preferably a member attached to a fixed structure (for example, a utility pole).
- the second object to be attached is not limited to a member attached to a structure whose position is fixed and is arbitrary.
- the traction element 4 is a linear member or belt-shaped member that pulls the first member 2 toward the second member 3 .
- Traction element 4 is flexible.
- the traction element 4 is a wire 4a.
- the wire 4a may be formed by twisting a plurality of wire elements.
- the traction element 4 has a first end 41 and a second end.
- the first end 41 is an annular end 41a having an aperture capable of receiving the pin member 6.
- the annular end 41a is formed, for example, by folding back the wire 4a. More specifically, it is formed by fixing the folded portion 4a-1 of the wire 4a to the other portion 4a-2 of the wire 4a via the fixing member .
- the second end is for example fixed to the rotating body 51 of the traction device 5 .
- the traction device 5 has a rotating body 51 (eg, a winding drum) that imparts a traction force to the traction elements 4 .
- the rotating body 51 pulls the portion of the traction element 4 between the first member 2 and the traction device 5 toward the traction device 5 .
- the traction element 4 is thus wound up by the rotating body 51 .
- the portion of the traction element 4 between the first member 2 and the traction device 5 is pulled toward the traction device 5 by rotating the rotor 51 provided in the traction device 5 in the first rotation direction R1. As a result, the distance between the first member 2 and the second member 3 is reduced.
- a traction element 4 (more specifically, a first end 41 of the traction element 4) is connected to the pin member 6 .
- the annular end 41 a of the traction element 4 is connected to the pin member 6 by inserting the pin member 6 into the annular end 41 a of the traction element 4 .
- the plate member 7 has a first receiving portion 71 and a first portion 73.
- the first receiving portion 71 receives the first end portion 6 a of the pin member 6 .
- the position of the pin member 6 is restricted by the first receiving portion 71 of the plate member 7 by receiving the pin member 6 in the first receiving portion 71 .
- the first receiving portion 71 is a first hole portion 71h into which the first end portion 6a of the pin member 6 is inserted.
- the first portion 73 is a portion pressed by the pin member 6 . More specifically, when the pin member 6 is pulled in the first direction DR1 by the traction element 4, the pin member 6 presses the first portion 73 of the plate member 7 in the first direction DR1. Also, the first portion 73 of the plate member 7 supports the pin member 6 against the pressing force received from the pin member 6 . Thus, part of the tension acting on the traction element 4 is supported by the plate member 7 via the pin member 6 . In the example shown in FIG. 2, the first portion 73 of the plate member 7 defines part of the first hole 71h.
- the first portion 73 of the plate member 7 can be destroyed by the pin member 6. More specifically, the first portion 73 of the plate member 7 is destroyed by the pin member 6 in response to the tension acting on the traction element 4 exceeding an allowable value (see FIG. 3). In the example shown in FIG. 3, the first hole 71h itself is destroyed by destroying the first portion 73 that defines a part of the first hole 71h.
- a loud sound is generated by destroying the first portion 73 (or the first hole portion 71h).
- the operator can recognize that the traction element 4 has been overtensioned.
- the first portion 73 is destroyed and moves in the first direction DR1, thereby at least part of the pin member 6 moves in the first direction DR1.
- the first portion 73 is destroyed and the first portion 73 moves in the first direction DR1, thereby moving the first end portion 6a of the pin member 6 and the central portion 6c of the pin member 6 in the first direction DR1.
- the overtension acting on the traction element 4 is relieved.
- the first portion 73 of the plate member 7 is destroyed according to the tension acting on the traction element 4 (more specifically, the wire 4a) (more specifically, according to the tension acting on the wire 4a exceeding the allowable value).
- the wire tensioning device 1A according to the first embodiment can accurately inform the operator that an excessive tension is acting on the traction element 4 by breaking the first portion 73 of the plate member 7 (in other words, by generating a sound accompanying the breakage of the first portion 73).
- accidents caused by excessive tension and damage to the wire tensioning device 1A caused by excessive tension are prevented.
- the plate member 7 other than the pin member 6 is broken due to the excessive tension acting on the traction element 4 .
- the non-breaking of the pin member 6 allows it to support the tensile forces acting on the traction element 4 even after the breaking of the plate member 7 .
- the pin member 6 is able to consistently support the tension acting on the traction element 4 both before the plate member 7 breaks and after the plate member 7 breaks. Therefore, in the wire tensioning device 1A according to the first embodiment, after the plate member 7 is destroyed, the worker can continue the wire tensioning work using the unbroken pin member 6 . In other words, the worker only needs to replace the destroyed plate member 7 after completing the planned work.
- the destroyed member is not the pin member 6 but the plate member 7, so replacement of the destroyed member is easy.
- the connection relationship between the pin member 6 and the traction element 4 is maintained even if the plate member 7 is destroyed.
- the pin member 6 is a member connected to the traction element 4, the degree of freedom of arrangement is small.
- the central portion 6c of the pin member 6 must be positioned between the first side 52 of the traction device 5 and the second side 53 of the traction device 5. As shown in FIG.
- the plate member 7 is not a member directly connected to the traction element 4, the degree of freedom of arrangement is large. For example, it is possible to arrange the plate member 7 outside the traction device 5 (more specifically, outside the first side wall 52a of the traction device 5). In this case, replacement of the destroyed plate member 7 becomes easier.
- wire tensioner 1 in the embodiment for example, the wire tensioner 1A in the first embodiment, the wire tensioner 1B in the second embodiment described later, or the wire tensioner 1C in the third embodiment described later.
- Plate member 7 In the example shown in FIG. 1, the plate member 7 is detachably attached to the traction device 5 . Also in the example shown in FIG. 1, the first portion 73 of the plate member 7 is arranged outside the traction device 5 so as to be visible to the user. In this case, the user can easily recognize whether or not the first portion 73 is destroyed, and can easily recognize whether or not the plate member 7 should be replaced.
- the plate member 7 is attached to the first side wall 52a of the traction device 5. More specifically, the plate member 7 is attached to the side surface of the first side wall 52a on the second direction DR2 side. In this case, the user can easily visually recognize the plate member 7 from the second direction DR2 side.
- the allowable value of tension acting on the traction element 4 depends on the plate thickness of the plate member 7 (the thickness of the plate member 7 in the direction along the second direction DR2). In other words, the greater the plate thickness of the plate member 7, the greater the allowable value, and the thinner the plate member 7, the smaller the above allowable value. Therefore, it is easy to adjust or change the allowable value according to the specifications of the wire tensioner 1 . On the other hand, if the member to be destroyed is not the plate member 7 but the pin member 6, it is difficult to change the allowable value. More specifically, since it is necessary to change the inner diameter of the hole that receives the pin member 6 in addition to changing the outer diameter of the pin member 6, it is not possible to easily change the allowable value of the tension acting on the traction element 4.
- the traction device 5 includes a first side portion 52 (more specifically, a first side wall 52a) and a second side portion 53 opposite the first side portion 52 (more specifically, a second side wall 53a). Also, the member (more specifically, the plate member 7 ) to be destroyed by the pin member 6 is arranged only on the first side portion 52 of the traction device 5 . In other words, the member to be broken by the pin member 6 (more specifically the plate member 7) is not arranged on the second side 53 of the traction device 5.
- the member to be destroyed by the pin member 6 is arranged only on one side of the traction device 5 (only one side), the member to be destroyed by the pin member 6 is only one plate member 7. In this case, it takes less time to replace the member destroyed by the pin member 6, and since the member to be replaced is only one plate member 7, the cost required for replacement can be reduced.
- half of the tensile load acting on the pin member 6 from the traction element 4 is supported by the first side 52 of the traction device 5 via the plate member 7, and the other half of the tensile load acting on the pin member 6 from the traction element 4 is supported by the second side 53 of the traction device 5.
- the magnitude of the breaking load of the plate member 7 may be set to half the permissible value of the tension acting on the traction element 4 .
- members broken by pin members 6 may be arranged on both sides of the traction device 5, as illustrated in FIG.
- the wire tensioner 1 may have a second plate member 7 ′ arranged on the second side 53 of the traction device 5 in addition to the plate member 7 arranged on the first side 52 of the traction device 5 .
- the plate member 7 (more specifically, the first portion 73) is broken by the pin member 6 and the second plate member 7' (more specifically, the first portion 73' of the second plate member 7') is broken by the pin member 6 in response to the tension acting on the traction element 4 exceeding the allowable value.
- the plate member 7 has a first portion 73 destroyed by the pin member 6 and a second portion 74 supporting the first portion 73.
- the second portion 74 also has a first leg portion 74a, a second leg portion 74b, and a first connecting portion 74c connecting the first leg portion 74a and the second leg portion 74b.
- the second portion 74 has a substantially U-shaped inner surface 74n when viewed from the side.
- the first connecting portion 74c may be omitted as illustrated in FIG.
- the first receiving portion 71 that receives the first end portion 6a of the pin member 6 may be the first concave portion 71d instead of the first hole portion.
- the first portion 73 is a substantially linear portion arranged to connect the first leg portion 74a and the second leg portion 74b.
- the first portion 73 may be a curvilinear portion arranged to connect the first leg 74a and the second leg 74b.
- the first portion 73 functions as a connecting portion that connects the first leg portion 74a and the second leg portion 74b.
- the plate member 7 has cutouts 72 .
- the notch portion 72 defines the starting point of destruction of the first portion 73 .
- the breaking starting point of the first portion 73 and the breaking load of the first portion 73 can be set more accurately.
- the notch 72 constitutes a part of the first hole 71h, and when the notch 72 is destroyed, the first hole 71h is destroyed.
- the notch portion 72 may include a first notch portion 72a and a second notch portion 72b.
- first notch portion 72a and a second notch portion 72b When the plate member 7 has the first cutout portion 72a and the second cutout portion 72b, after the first portion 73 is destroyed, the plate member 7 is separated into the first portion 73 between the first cutout portion 72a and the second cutout portion 72b and the second portion 74. Moreover, when the plate member 7 has the first notch portion 72a and the second notch portion 72b, the breaking load of the first portion 73 can be set even more accurately.
- the plate member 7 has a first hole portion 71h into which the pin member 6 is inserted, and a mounting hole portion 75h.
- Each of the first hole portion 71h and the attachment hole portion 75h is, for example, a hole portion without a screw portion.
- the mounting hole portion 75h is arranged in the second portion 74 and the mounting hole portion 75h is not arranged in the first portion 73 .
- the mounting holes 75 h may be arranged in the legs ( 74 a, 74 b ) of the second portion 74 or may be arranged in the first connecting portion 74 c of the second portion 74 .
- the plate member 7 has three mounting holes 75h, but the number of mounting holes 75h may be two or four or more.
- the plate member 7 is fixed to the traction device 5 via fixing members 81 such as bolts 81a.
- a fixing member 81 is inserted into the mounting hole portion 75h of the plate member 7.
- a bolt 81a may be inserted into the attachment hole 75h of the plate member 7, and the tip of the bolt 81a may be screwed into a hole formed in the traction device 5 (more specifically, the first side wall 52a).
- a hexagonal hole that can be engaged with a hexagonal wrench may be formed in the head of the bolt 81a.
- the pin member 6 has a first end 6a, a second end 6b and a central portion 6c located between the first end 6a and the second end 6b.
- the first end 6a is inserted into a first elongated hole 52h formed in the first side wall 52a of the traction device 5, and the second end 6b is inserted into the second elongated hole 53h formed in the second side wall 53a of the traction device.
- the pin member 6 is configured to tilt with respect to the extending direction of the traction element 4 (in other words, the first direction DR1) when the first portion 73 of the plate member 7 is destroyed. More specifically, when the angle between the central axis C1 of the pin member 6 and the first direction DR1 before the first portion 73 is destroyed is defined as an angle ⁇ 1, and the angle between the central axis C1 of the pin member 6 and the first direction DR1 after the first portion 73 is destroyed is defined as an angle ⁇ 2, the angle ⁇ 2 is different from the angle ⁇ 1. In the example illustrated in FIG. 9, the angle ⁇ 1 is 90 degrees and the angle ⁇ 2 is an angle smaller than 90 degrees (for example, 80 degrees or more and less than 90 degrees).
- Whether or not the plate member 7 is destroyed can be visually confirmed from the side of the traction device 5. Further, the tilting of the pin member 6 (or the displacement of the traction element 4 caused by the tilting of the pin member 6) is visible from above the traction device 5. FIG. Therefore, when the pin member 6 is configured to tilt when the first portion 73 of the plate member 7 is destroyed, the operator can easily recognize whether or not the plate member 7 is destroyed based on either the destruction of the plate member 7 or the tilting of the pin member 6 (or the displacement of the traction element 4 caused by the tilting of the pin member 6).
- the first end 6a of the pin member 6 is configured to be movable in the first direction DR1 while the second end 6b of the pin member 6 is prohibited from moving in the first direction DR1. More specifically, in the example shown in FIG. 9 (see the upper diagram of FIG. 9), the first long hole portion 52h extends further than the pin member 6 in the first direction DR1, and the second long hole portion 53h extends further than the pin member 6 in the third direction DR3 (in other words, the direction opposite to the first direction DR1).
- the end 52e of the first long hole portion 52h on the first direction DR1 side is located on the first direction DR1 side of the end 53e of the second long hole portion 53h on the first direction DR1 side.
- the end 53e of the second elongated hole portion 53h prohibits the second end portion 6b of the pin member 6 from moving in the first direction DR1
- the first elongated hole portion 52h allows the first end portion 6a of the pin member 6 to move in the first direction DR1.
- the wire tensioner 1 includes a stopper member 82 that stops the movement of the first portion 73 of the plate member 7 .
- Stopper member 82 prevents first portion 73 from moving in first direction DR1 beyond stopper member 82 after first portion 73 is destroyed. It is preferable that the first portion 73 is sandwiched between the pin member 6 and the stopper member 82 when the first portion 73 is destroyed by the pin member 6 . In this case, the first portion 73 is prevented from falling downward from the traction device 5 after the first portion 73 is destroyed.
- the stopper member 82 is arranged on the side opposite to the pin member 6 with respect to the first portion 73 of the plate member 7 . More specifically, the stopper member 82 is arranged on the first direction DR1 side of the first portion 73 , and the pin member 6 is arranged on the third direction DR3 side of the first portion 73 .
- the stopper member 82 is attached to the traction device 5 (more specifically, the first side wall 52a of the traction device 5). Also, the stopper member 82 is a bolt that is screwed onto the traction device 5 (more specifically, the first side wall 52a). Alternatively, the stopper member 82 may be a second pin member 83 to be described later, or a nut 84 that screws onto the second pin member 83 .
- the wire tensioner 1 has the second pin member 83 arranged on the first direction DR1 side of the pin member 6 .
- the second pin member 83 is, for example, a bolt.
- the second pin member 83 is inserted into the hole of the traction element 4 (more specifically, the annular end 41a of the traction element 4). In this case, the annular end 41a of the traction element 4 is supported by the second pin member 83 even if the pin member 6 should break. Therefore, the safety of the wire tensioning device 1 is tripled.
- the pin member 6 safely supports the annular end 41a of the traction element 4, and even if the plate member 7 and the pin member 6 are destroyed, the second pin member 83 safely supports the annular end 41a of the traction element 4.
- the wire tensioner 1 has a position restricting member 86 that restricts the position of the annular end portion 41a of the traction element 4 in the direction parallel to the second direction DR2.
- the position regulating member 86 is supported by the second pin member 83, for example.
- the position restricting member 86 has a groove 86v (for example an annular groove) that receives the traction element 4 .
- the position restricting member 86 Due to the presence of the position restricting member 86, displacement of the annular end portion 41a in the direction parallel to the second direction DR2 is prevented.
- the distance between the position restricting member 86 and the first side wall 52 a of the traction device 5 is equal to the distance between the position restricting member 86 and the second side wall 53 a of the traction device 5 .
- the position regulating member 86 is arranged exactly midway between the first side wall 52a and the second side wall 53a.
- the wire tensioner 1 has a retaining member 87 that prevents the pin member 6 from coming off the pulling device 5 .
- the retaining member 87 may be a split pin or a pin member with a screw.
- the number of retaining members 87 may be one, or may be two or more.
- the wire tensioner 1 has an operating handle 93 .
- An operating handle 93 is attached to the traction device 5 .
- the operating handle 93 is a member for operating the traction element 4 via the rotating body 51.
- the operation of the operating handle 93 is transmitted to the rotating body 51 .
- the rotating body 51 rotates in the first rotating direction R1.
- the traction element 4 is drawn into the traction device 5 when the rotating body 51 rotates in the first direction of rotation R1.
- the traction element 4 pulls the first member 2 in the direction towards the traction device 5 .
- the operating handle 93 is preferably a handle with a ratchet mechanism.
- the rotating body 51 is consistently rotated in the first rotation direction R1 by repeatedly swinging the operating handle 93 around the swing axis AX1.
- the first portion 73 of the plate member 7 is destroyed when the tension acting on the traction element 4 exceeds the allowable value, there is no need to provide a torque limiter between the operating handle 93 and the rotating body 51.
- a mode in which a torque limiter is arranged between the operating handle 93 and the rotating body 51 is not excluded.
- the traction device 5 has a rotating body 51, a first side wall 52a, a second side wall 53a and a stopper 54.
- the traction device 5 has a rotating body 51, a first side wall 52a, a second side wall 53a and a stopper 54.
- the rotor 51 is rotatable around the rotation axis AX2.
- the rotating body 51 is rotatably supported by the first side wall 52a and the second side wall 53a via the shaft. Also, the rotating body 51 is arranged between the first side wall 52a and the second side wall 53a.
- the rotating body 51 is, for example, a drum on which the traction element 4 can be wound.
- the first side wall 52a and the second side wall 53a directly or indirectly support the rotating body 51, the pin member 6, and the second pin member 83, respectively. Also, the plate member 7 is attached to the first side wall 52a.
- the stopper 54 prohibits the rotor 51 from rotating in the second rotation direction R2 opposite to the first rotation direction R1.
- the stopper 54 may include a stopper claw 54a.
- the traction device 5 may have a mode switching section 55 that moves the stopper 54 to the retracted position.
- the state of the mode switching unit 55 is set to the first mode state (in other words, the winding mode state)
- the stopper 54 moves to the advanced position.
- the rotor 51 is rotatable only in the first rotation direction R1.
- the state of the mode switching unit 55 is set to the second mode state (in other words, return mode state or neutral mode state)
- the stopper 54 moves to the retracted position.
- the rotor 51 can rotate in both the first rotation direction R1 and the second rotation direction R2.
- the traction device 5 may have a support member 56 that supports the second member 3.
- the second member 3 is attached to the support member 56 .
- FIG. 11 is a schematic two-sided view schematically showing the wire tensioning device 1B in the second embodiment.
- An upper side of FIG. 11 shows a schematic plan view, and a lower side of FIG. 11 shows a schematic side view.
- FIG. 12 is a schematic side view schematically showing part of the wire tensioning device 1B in the second embodiment.
- 13 is a cross-sectional view taken along line CC in FIG. 12.
- FIG. 14 is a schematic side view schematically showing part of the wire tensioning device 1B in the second embodiment.
- 15 is a cross-sectional view taken along line DD in FIG. 14.
- FIG. 12 and 13 show the state before the plate member 7 is destroyed, and FIGS. 14 and 15 show the state after the plate member 7 is destroyed.
- the wire tensioner 1B in the second embodiment differs from the wire tensioner 1A in the first embodiment in that the traction element 4 is a chain 4b.
- the wire tensioner 1B in the second embodiment includes (1) a first member 2 that can be attached to a first attachment object, (2) a second member 3 that can be attached to a second attachment object, (3) a pulling element 4 that pulls the first member 2 toward the second member 3, (4) a pulling device 5 having a rotating body 51 that imparts a pulling force to the pulling element 4, (5) a pin member 6 to which the pulling element 4 is connected, and (6) a plate member. 7 and .
- the plate member 7 has a first receiving portion 71 (for example, a first hole) that receives the first end portion 6a of the pin member 6, and a first portion 73 that is pressed by the pin member 6 and destroyed by the pin member 6 when the tension acting on the traction element 4 exceeds an allowable value.
- a first receiving portion 71 for example, a first hole
- the second embodiment has the same effect as the first embodiment.
- the first member 2 includes an arbitrary attachment portion 21 that can be attached to the first attachment object.
- the attachment portion 21 includes a first hook portion 21f that can be attached to the first attachment object.
- the second member 3 includes an optional second attachment portion 31 that can be attached to a second attachment object.
- the second attachment portion 31 includes a second hook portion 31f that can be attached to the second attachment object.
- the traction element 4 is a chain 4b.
- Chain 4 b pulls first member 2 toward second member 3 .
- Chain 4 b has a first end 41 and a second end 42 .
- the first end 41 is connected to the pin member 6 .
- An end stopper 43 is arranged at the second end 42 .
- the end stop 43 prevents the chain 4b from coming off the traction device 5 . More specifically, the end stopper 43 defines the return limit position of the second end 42 of the chain 4b when the second end 42 is returned to the traction device 5 side.
- the chain 4b is composed of a plurality of annular elements K, and the annular element K1 forming the first end portion 41 functions as an annular end portion 41a.
- the pin member 6 is inserted into the annular element K1 that forms the first end portion 41 (in other words, the annular end portion 41a).
- the chain 4b extends from the first end 41 toward the first member 2, is folded back by the pulley 25 of the first member 2, and extends toward the traction device 5. Also, the chain 4b is folded back by the rotating body 51 of the traction device 5 and extends from the traction device 5 to the second end 42 of the chain 4b.
- rotating body 51 In the example shown in FIG. 11, the rotating body 51 is a load sheave. The rotating body 51 is rotatable around the rotation axis AX2. The rotating body 51 pulls the portion of the chain 4b between the first member 2 and the traction device 5 toward the traction device 5 side.
- the operation of the operating handle 93 is transmitted to the rotating body 51 via transmission members such as gears.
- transmission members such as gears.
- the rotating body 51 rotates in the first rotating direction R1, and as a result, the portion of the chain 4b between the first member 2 and the traction device 5 is pulled toward the traction device 5.
- the plate member 7 is detachably attached to the traction device 5 (more specifically, the first side wall 52a of the traction device 5). Also, in the example shown in FIG. 12, the first portion 73 of the plate member 7 is arranged outside the traction device 5 so as to be visible to the user.
- the plate member 7 As the plate member 7, a configuration similar to that of the plate member 7 described in the first embodiment can be adopted. As illustrated in FIG. 12, the plate member 7 has a first receiving portion 71 (more specifically, a first hole portion 71h), a first portion 73, and a second portion 74. As shown in FIG. The plate member 7 may have mounting holes 75h (see FIG. 13). Since the first receiving portion 71, the first portion 73, the second portion 74, and the mounting hole portion 75h have already been described in the first embodiment, repeated description of the first receiving portion 71, the first portion 73, the second portion 74, and the mounting hole portion 75h will be omitted.
- the pin member 6 has a first end 6a, a second end 6b, and a central portion 6c disposed between the first end 6a and the second end 6b.
- the first end 6a is inserted into a first elongated hole 52h formed in the first side wall 52a of the traction device 5, and the second end 6b is inserted into the second elongated hole 53h formed in the second side wall 53a of the traction device.
- the pin member 6 destroys the first portion 73 of the plate member 7 in response to the tension acting on the traction element 4 exceeding the allowable value (see FIG. 14). Further, in the example shown in FIG. 15, the pin member 6 is configured to tilt with respect to the extending direction of the traction element 4 (in other words, the first direction DR1) when the first portion 73 of the plate member 7 is destroyed.
- the wire tensioning device 1B includes a stopper member 82 that stops the movement of the first portion 73 of the plate member 7 .
- Stopper member 82 prevents first portion 73 from moving in first direction DR1 beyond stopper member 82 after first portion 73 is destroyed. More specifically, when the first portion 73 is destroyed by the pin member 6, the first portion 73 is sandwiched between the pin member 6 (more specifically, the first end 6a of the pin member 6) and the stopper member 82.
- the stopper member 82 is attached to the first side wall 52a and the second side wall 53a of the traction device 5.
- the stopper member 82 is a member inserted into the hole 4h (more specifically, the annular end 41a) of the traction element 4 (more specifically, the chain 4b).
- the stopper member 82 may be a second pin member 83 (for example, a bolt) or a nut 84 screwed onto the second pin member 83 .
- the stopper member 82 may be a separate member from the second pin member 83, similar to the example shown in FIG.
- the wire tensioner 1B has a second pin member 83 arranged on the first direction DR1 side of the pin member 6 .
- a second pin member 83 is inserted into the annular end 41 a of the traction element 4 .
- the annular end 41a of the traction element 4 is supported by the second pin member 83 even if the pin member 6 should break.
- FIG. 16 is a schematic two-sided view schematically showing a wire tensioning device 1C in the third embodiment.
- the upper side of FIG. 16 shows a schematic plan view, and the lower side of FIG. 16 shows a schematic side view.
- FIG. 17 is a schematic side view schematically showing part of the wire tensioning device 1C in the third embodiment.
- 18 is a cross-sectional view taken along line EE in FIG. 17.
- FIG. 19 is a schematic side view schematically showing part of the wire tensioning device 1C in the third embodiment.
- 20 is a cross-sectional view taken along line FF in FIG. 19.
- FIG. 17 and 18 show the state before the plate member 7 is destroyed, and
- FIGS. 19 and 20 show the state after the plate member 7 is destroyed.
- the wire tensioner 1C in the third embodiment differs from the wire tensioner 1A in the first embodiment and the wire tensioner 1B in the second embodiment in that the pulling element 4 is a belt 4c.
- the points different from the first and second embodiments will be mainly described, and repetitive descriptions of items already described in the first or second embodiment will be omitted. Therefore, even if not explicitly described in the third embodiment, it goes without saying that the matters already described in the first embodiment or the second embodiment can be adopted in the third embodiment.
- the wire tensioner 1C in the third embodiment includes (1) a first member 2 that can be attached to a first attachment object, (2) a second member 3 that can be attached to a second attachment object, (3) a pulling element 4 that pulls the first member 2 toward the second member 3, (4) a pulling device 5 having a rotating body 51 that imparts a pulling force to the pulling element 4, (5) a pin member 6 to which the pulling element 4 is connected, and (6) a plate member. 7 and .
- the plate member 7 has a first receiving portion 71 (for example, a first hole) that receives the first end portion 6a of the pin member 6, and a first portion 73 that is pressed by the pin member 6 and destroyed by the pin member 6 when the tension acting on the traction element 4 exceeds an allowable value.
- a first receiving portion 71 for example, a first hole
- the third embodiment has the same effect as the first embodiment or the second embodiment.
- the first member 2 includes an arbitrary attachment portion 21 attachable to the first attachment object
- the second member 3 includes an arbitrary second attachment portion 31 attachable to the second attachment object. Since the mounting portion 21 and the second mounting portion 31 have already been described in the first embodiment or the second embodiment, a repeated description of the mounting portion 21 and the second mounting portion 31 will be omitted.
- the traction element 4 is a belt 4c.
- the belt 4 c pulls the first member 2 toward the second member 3 .
- the belt 4c has a first end 41 and a second end.
- the first end 41 is connected to the pin member 6 .
- the first end 41 is also an annular end 41a having a hole for receiving the pin member 6 therein.
- the annular end portion 41a is formed, for example, by folding back the belt 4c. More specifically, the annular end 41a is formed by fixing the folded portion 4c-1 of the belt 4c to the other portion 4c-2 of the belt 4c.
- the belt 4c extends from the first end 41 toward the first member 2, is folded back by the pulley 25 of the first member 2, and extends toward the traction device 5.
- a second end of the belt 4c is fixed to the rotating body 51 of the traction device 5, for example.
- the traction device 5 has a rotating body 51 that imparts traction to the traction element 4 .
- the rotating body 51 is, for example, a winding drum.
- the rotating body 51 pulls the portion of the traction element 4 between the first member 2 and the traction device 5 toward the traction device 5 .
- the traction element 4 is thus wound up by the rotating body 51 .
- the portion of the traction element 4 between the first member 2 and the traction device 5 is pulled toward the traction device 5 by rotating the rotating body 51 provided in the traction device 5 in the first rotation direction R1. As a result, the distance between the first member 2 and the second member 3 is reduced.
- the plate member 7 is detachably attached to the traction device 5 (more specifically, the first side wall 52a of the traction device 5). Also, in the example shown in FIG. 17, the first portion 73 of the plate member 7 is arranged outside the traction device 5 so as to be visible to the user.
- the plate member 7 As the plate member 7, a configuration similar to that of the plate member 7 described in the first embodiment or the second embodiment can be adopted. Since the plate member 7 has already been described in the first embodiment or the second embodiment, a repeated description of the plate member 7 will be omitted.
- the pin member 6 has a first end 6a, a second end 6b, and a central portion 6c disposed between the first end 6a and the second end 6b.
- the first end 6a is inserted into a first elongated hole 52h formed in the first side wall 52a of the traction device 5, and the second end 6b is inserted into the second elongated hole 53h formed in the second side wall 53a of the traction device.
- the pin member 6 destroys the first portion 73 of the plate member 7 when the tension acting on the traction element 4 exceeds the allowable value (see FIG. 19). Further, in the example shown in FIG. 20, the pin member 6 is configured to tilt with respect to the extending direction of the traction element 4 (in other words, the first direction DR1) when the first portion 73 of the plate member 7 is destroyed.
- the wire tensioning device 1C includes a stopper member 82 that stops the movement of the first portion 73 of the plate member 7 .
- Stopper member 82 prevents first portion 73 from moving in first direction DR1 beyond stopper member 82 after first portion 73 is destroyed. More specifically, when the first portion 73 is destroyed by the pin member 6, the first portion 73 is sandwiched between the pin member 6 (more specifically, the first end 6a of the pin member 6) and the stopper member 82.
- the stopper member 82 is a nut 84 that screws onto a second pin member 83 that is inserted into the hole 4h (more specifically, the annular end 41a) of the traction element 4 (more specifically, the belt 4c).
- the stopper member 82 may be the head of a second pin member 83 inserted into the hole 4h of the traction element 4.
- the stopper member 82 may be a bolt attached to the first side wall 52 a of the traction device 5 .
- the wire tensioner 1C has a second pin member 83 arranged on the first direction DR1 side of the pin member 6 .
- a second pin member 83 is inserted into the annular end 41 a of the traction element 4 .
- the annular end 41a of the traction element 4 is supported by the second pin member 83 even if the pin member 6 should break.
- FIG. FIG. 21 is a schematic two-sided view schematically showing the plate member 7 for a wire tensioning machine in the fourth embodiment.
- the upper side of FIG. 21 shows a schematic side view, and the lower side of FIG. 21 shows a schematic bottom view.
- the plate member 7 for the wire tensioner in the fourth embodiment includes (1) a mounting hole 75h attached via a fixing member to a traction device having a rotating body that applies a traction force to the traction element, (2) a first receiving portion 71 (more specifically, a first hole 71h) that receives a pin member connected to the traction element, and (3) pressed by the pin member and broken by the pin member when the tension acting on the traction element exceeds an allowable value. and a first portion 73 which is configured to be the same.
- the wire tensioning device 1 to which the wire tensioning device plate member 7 of the fourth embodiment is attached has the same effect as the wire tensioning device 1A of the first embodiment, the wire tensioning device 1B of the second embodiment, or the wire tensioning device 1C of the third embodiment.
- the wire tensioner plate member 7 has the same shape as the plate member 7 attached to the traction device 5 of the wire tensioner 1B in the second embodiment (see FIG. 12, for example).
- the plate member 7 for the wire tensioner may have the same shape as the plate member 7 attached to the traction device 5 of the wire tensioner 1A in the first embodiment (or the wire tensioner 1C in the third embodiment) (see, for example, FIGS. 2, 8, 17, etc.).
- the plate member 7 has a first portion 73 destroyed by the pin member 6 and a second portion 74 supporting the first portion 73.
- the second portion 74 is provided with a mounting hole portion 75h into which a fixing member for fixing the plate member 7 to the traction device 5 is inserted.
- the second portion 74 has a first leg portion 74a and a second leg portion 74b.
- the second leg portion 74b is arranged on the opposite side of the first receiving portion 71 (more specifically, the first hole portion 71h) of the plate member 7 from the first leg portion 74a.
- an end 741a of the first leg 74a on the first direction DR1 side is connected to a first end 731 of the first portion 73
- an end 741b of the second leg 74b on the first direction DR1 side is connected to a second end 732 of the first portion 73.
- a first notch 72 a may be arranged between the end 741 a of the first leg 74 a and the first end 731 of the first portion 73 .
- a second notch portion 72b may be arranged between the end portion 741b of the second leg portion 74b and the second end portion 732 of the first portion 73b.
- the plate member 7 has a first connecting portion 74c that connects the first leg portion 74a and the second leg portion 74b. More specifically, the first connecting portion 74c connects an end portion 743a of the first leg portion 74a on the third direction DR3 side and an end portion 743b of the second leg portion 74b on the third direction DR3 side.
- the first connecting portion 74 c is arranged on the side opposite to the first portion 73 with respect to the first receiving portion 71 (more specifically, the first hole portion 71 h ) of the plate member 7 .
- the first hole 71h into which the first end 6a of the pin member 6 is inserted is defined by the first leg 74a, the first portion 73, the second leg 74b, and the first connecting portion 74c. If the first connecting portion 74c is omitted, the recess for receiving the first end 6a of the pin member 6 is defined by the first leg 74a, the first portion 73, and the second leg 74b.
- the first leg portion 74a, the second leg portion 74b, and the first connecting portion 74c define a substantially U-shaped inner surface 74n, and the first portion 73 defines a substantially planar inner surface 73n.
- FIG. 22 is a schematic two-sided view schematically showing the wire tensioner main body 10.
- FIG. The upper side of FIG. 22 shows a schematic side view, and the lower side of FIG. 22 shows a schematic bottom view.
- FIG. 23 is a schematic side view schematically showing the state after the placement step has been performed.
- FIG. 24 is a flow chart showing an example of a method for assembling a wire tensioner according to the embodiment.
- the wire tensioner 1 assembled by the wire tensioner assembly method in the embodiment may be the wire tensioner 1A in the first embodiment, the wire tensioner 1B in the second embodiment, the wire tensioner 1C in the third embodiment, or any other wire tensioner.
- the wire tensioner body 10 is prepared.
- the first step ST1 is a first preparatory step.
- the wire tensioner main body 10 prepared in the first preparation step has a first member 2 that can be attached to a first attachment object, a second member 3 that can be attached to a second attachment object, a traction element 4 that pulls the first member 2 toward the second member 3, a traction device 5 that has a rotating body 51 that imparts a traction force to the traction element 4, and a pin member 6 that is connected to the traction element 4.
- the traction element 4 may be a wire 4a, a chain 4b or a belt 4c.
- the traction device 5 (more specifically, the first side wall 52a of the traction device 5) has a hole 52p into which a fixing member 81, which will be described later, is inserted.
- the hole portion 52p is, for example, a screw hole that is screwed onto the tip portion of the fixing member 81 .
- the wire tensioner main body 10 with the pin member 6 attached to the pulling device 5 is prepared in the first preparation step.
- the pin member 6 may not be attached to the pulling device 5 in the wire tensioner main body 10 prepared in the first preparation step.
- the wire tensioner main body 10 prepared in the first preparation step may be the wire tensioner main body before the pin member 6 is attached to the pulling device 5 .
- the wire tensioner main body 10 prepared in the first preparation process may be a new product or a second-hand product that has already been distributed.
- the broken plate member is removed from the pulling device 5 in the first preparation step.
- the plate member 7 is prepared in the second step ST2.
- the second step ST2 is a second preparatory step.
- the plate member 7 prepared in the second preparation step has a first receiving portion 71 (more specifically, a first hole portion 71h) that receives the first end of the pin member, and a first portion 73 that is pressed by the pin member and broken by the pin member when the tension acting on the traction element 4 exceeds an allowable value.
- the plate member 7 prepared in the second preparation step may be the plate member 7 shown in FIG. 7, FIG. 8, or the like.
- the first end portion 6a of the pin member 6 is arranged in the first receiving portion 71 (more specifically, the first hole portion 71h) of the plate member 7.
- a third step ST3 is an arrangement step.
- the placing step includes placing the plate member 7 on the traction device 5 such that the first receiving portion 71 of the plate member 7 surrounds the first end 6 a of the pin member 6 .
- a fourth step ST4 is a fixing step.
- the fixing step includes inserting fixing members 81 (for example, bolts 81 a ) into mounting holes 75 h of the plate member 7 and fixing the plate member 7 to the traction device 5 via the fixing members 81 .
- the fixing step may include screwing the distal end portion of the fixing member 81 to the traction device 5 (more specifically, the first side wall 52a of the traction device 5). 2, 12, and 17 show the state after the fixing step is performed.
- the fixing step (fourth step ST4) is preferably performed after the placement step (third step ST3), but alternatively, the fixing step may be performed before the placement step.
- the pin member 6 may be inserted into the first hole 71h of the plate member 7, the first slot 52h of the traction device 5, and the annular end 41a of the traction element 4.
- the retaining member 87 may be attached to the pin member 6 .
- the wire tensioner 1 having the plate member 7 that can be destroyed by the pin member 6 is assembled. Therefore, in the assembled wire tensioning device 1 , the breaking of the plate member 7 can accurately notify the operator that an excessive tension has been applied to the traction element 4 .
- the plate member 7 that can be destroyed by the pin member 6 can be attached to the pulling device 5 very easily. Also, after the plate member 7 is destroyed, it is easy to replace the destroyed plate member 7 with a new plate member (in other words, the wire tensioner can be reassembled very easily).
- the wire tensioning device By using the wire tensioning device, the plate member for the wire tensioning device, and the method for assembling the wire tensioning device of the present invention, it is possible to accurately inform the operator that excessive tension has been applied to the traction element. Therefore, the occurrence of accidents due to overtension and the breakage of the wire tensioner due to overtension are prevented. Therefore, it is useful for those who work with wire tensioners and for manufacturers who manufacture wire tensioners or plate members for wire tensioners.
- First side wall 52e End in first direction 52h... First elongated hole 52p... Hole 53... Second side 53a... Second side wall 53e... End in first direction 53 h second long hole 54 stopper 54a stopper claw 55 mode switching portion 56 support member 71 first receiving portion 71d first recess 71h first hole 72 notch 72a first notch 72b second notch 73 first portion 73′ first portion 73n inner surface 74 second portion 74a first Leg 74b Second leg 74c First connecting part 74n Inner surface 75h Mounting hole 81 Fixing member 81a Bolt 82 Stopper member 83 Second pin member 84 Nut 86 Position regulating member 86v Groove 87 Retaining member 93 Operating handle 731 First end 732 Second end 741a First direction end Part, 741b...
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Abstract
Description
第2取付対象物に取り付け可能な第2部材と、
前記第1部材を前記第2部材に向けて牽引する牽引要素と、
前記牽引要素に牽引力を付与する回転体を有する牽引装置と、
前記牽引要素が接続されるピン部材と、
プレート部材と
を具備し、
前記プレート部材は、
前記ピン部材の第1端部を受容する第1受容部と、
前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と
を有する
張線器。
(2)前記プレート部材は、前記牽引装置に着脱可能なように取り付けられ、
前記プレート部材の前記第1部分は、ユーザによって視認可能なように、前記牽引装置の外側に配置される
上記(1)に記載の張線器。
(3)前記許容値の大きさは、前記プレート部材の板厚に依存する
上記(1)または(2)に記載の張線器。
(4)前記牽引装置は、第1側部と、前記第1側部とは反対側の第2側部とを含み、
前記ピン部材によって破壊される部材は、前記牽引装置の前記第1側部のみに配置される
上記(1)乃至(3)のいずれか一つに記載の張線器。
(5)前記第1部分が破壊されるときに、前記ピン部材は、前記牽引要素の延在方向に対して傾動するように構成される
上記(1)乃至(4)のいずれか一つに記載の張線器。
(6)前記牽引装置の第1側壁は、前記ピン部材の前記第1端部が挿入される第1長孔部を有し、
前記牽引装置の第2側壁は、前記ピン部材の第2端部が挿入される第2長孔部を有し、
前記ピン部材が前記牽引要素によって引っ張られる方向を第1方向と定義する時、前記第1長孔部の前記第1方向側の端は、前記第2長孔部の前記第1方向側の端よりも第1方向側に位置する
上記(5)に記載の張線器。
(7)前記プレート部材の前記第1部分の移動を停止させるストッパ部材を更に具備し、
前記第1部分が破壊されるときに、前記第1部分は、前記ピン部材と前記ストッパ部材とによって挟持されるように構成される
上記(1)乃至(6)のいずれか一つに記載の張線器。
(8)前記ストッパ部材は、前記牽引装置に螺合するボルトであるか、前記牽引要素の孔部に挿入される第2ピン部材であるか、あるいは、前記牽引要素の前記孔部に挿入される前記第2ピン部材に螺合するナットである
上記(7)に記載の張線器。
(9)前記プレート部材は、切り欠き部を有し、
前記切り欠き部は、前記第1部分の破壊の起点を規定する
上記(1)乃至(8)のいずれか一つに記載の張線器。
(10)前記牽引要素は、ワイヤ、チェーン、または、ベルトのうちの少なくとも1つによって構成される
上記(1)乃至(9)のいずれか一つに記載の張線器。
(11)牽引要素に牽引力を付与する回転体を有する牽引装置に固定部材を介して取り付けられる取付孔部と、
前記牽引要素に接続されるピン部材を受容する第1受容部と、
前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と
を具備する
張線器用のプレート部材。
(12)第1取付対象物に取り付け可能な第1部材と、第2取付対象物に取り付け可能な第2部材と、前記第1部材を前記第2部材に向けて牽引する牽引要素と、前記牽引要素に牽引力を付与する回転体を有する牽引装置と、前記牽引要素に接続されるピン部材と、を有する張線器本体部を準備する工程と、
前記ピン部材の第1端部を受容する第1受容部と、前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と、を有するプレート部材を準備する工程と、
前記プレート部材の前記第1受容部に、前記ピン部材の前記第1端部を配置する工程と、
前記プレート部材を前記牽引装置に固定する工程と
を具備する
張線器の組立方法。
本明細書において、ピン部材6が牽引要素4によって引っ張られる方向を「第1方向DR1」と定義する。また、第1方向DR1とは反対の方向を「第3方向DR3」と定義する。本明細書において、牽引装置5の第2側部53から牽引装置5の第1側部52に向かう方向を「第2方向DR2」と定義する。第2方向DR2は、典型的には、第1方向DR1に垂直な方向である。
図1乃至図10を参照して、第1の実施形態における張線器1Aについて説明する。図1は、第1の実施形態における張線器1Aを模式的に示す概略2面図である。図1の上側には、概略側面図が記載され、図1の下側には、概略底面図が記載されている。図2および図3は、第1の実施形態における張線器1Aの一部分を模式的に示す概略側面図である。図4は、図3におけるB-B矢視断面図である。図5は、図2におけるA-A矢視断面図である。なお、図2、図5は、プレート部材7が破壊される前の状態を示し、図3、図4は、プレート部材7が破壊された後の状態を示す。図6は、第1の実施形態の第1変形例における張線器1Aの一部分を模式的に示す概略断面図である。図7は、プレート部材7の一例を模式的に示す概略2面図である。図7の上側には、概略側面図が記載され、図7の下側には、概略底面図が記載されている。図8は、プレート部材7の変形例を説明するための図である。図9は、プレート部材7が破壊された後、ピン部材6が傾動する様子を模式的に示す概略断面図である。図10は、第1の実施形態における張線器1Aの一部分を模式的に示す概略3面図である。図10の上側には、第2側面図(第2方向DR2に沿って見たときの図)が記載され、図10の中央部分には、概略平面図が記載され、図10の下側には、第1側面図(第2方向DR2と反対の方向に沿って見たときの図)が記載されている。
図1に記載の例では、プレート部材7は、牽引装置5に着脱可能なように取り付けられている。また、図1に記載の例では、プレート部材7の第1部分73は、ユーザによって視認可能なように、牽引装置5の外側に配置されている。この場合、ユーザは、第1部分73が破壊されているか否かを容易に認識することができ、プレート部材7が交換されるべき状態であるか否かを容易に認識することができる。
図9に例示されるように、ピン部材6は、第1端部6aと、第2端部6bと、第1端部6aと第2端部6bとの間に配置される中央部分6cと、を有する。第1端部6aは、牽引装置5の第1側壁52aに形成された第1長孔部52hに挿入され、第2端部6bは、牽引装置の第2側壁53aに形成された第2長孔部53hに挿入される。
図3に記載の例では、張線器1は、プレート部材7の第1部分73の移動を停止させるストッパ部材82を備える。ストッパ部材82は、第1部分73が破壊された後、第1部分73がストッパ部材82を超えて第1方向DR1に移動することを防止する。第1部分73がピン部材6によって破壊されるときに、当該第1部分73は、ピン部材6とストッパ部材82とによって挟持されるように構成されることが好ましい。この場合、第1部分73が破壊された後、第1部分73が、牽引装置5から下方に落下することが防止される。
図4に記載の例では、張線器1は、ピン部材6よりも第1方向DR1側に配置される第2ピン部材83を有する。第2ピン部材83は、例えば、ボルトである。第2ピン部材83は、牽引要素4の孔部(より具体的には、牽引要素4の環状端部41a)に挿入される。この場合、万が一、ピン部材6が破断しても、牽引要素4の環状端部41aが第2ピン部材83によって支持される。よって、張線器1の安全性が、3重に確保される。より具体的には、プレート部材7が破壊されても、ピン部材6によって、牽引要素4の環状端部41aが安全に支持され、プレート部材7およびピン部材6が破壊されても、第2ピン部材83によって牽引要素4の環状端部41aが安全に支持される。
図4に記載の例では、張線器1は、第2方向DR2に平行な方向における牽引要素4の環状端部41aの位置を規制する位置規制部材86を有する。位置規制部材86は、例えば、第2ピン部材83によって支持される。図4に記載の例では、位置規制部材86は、牽引要素4を受容する溝部86v(例えば、環状溝部)を有する。
図10に記載の例では、張線器1は、ピン部材6が牽引装置5から外れるのを防止する抜け止め部材87を有する。抜け止め部材87は、割ピンであってもよいし、ネジ付きのピン部材であってもよい。抜け止め部材87の数は、1個であってもよいし、2個以上であってもよい。
図1に記載の例では、張線器1は、操作ハンドル93を有する。操作ハンドル93は、牽引装置5に取り付けられている。
図1に記載の例では、牽引装置5は、回転体51と、第1側壁52aと、第2側壁53aと、ストッパ54と、を有する。
図11乃至図15を参照して、第2の実施形態における張線器1Bについて説明する。図11は、第2の実施形態における張線器1Bを模式的に示す概略2面図である。図11の上側には、概略平面図が記載され、図11の下側には、概略側面図が記載されている。図12は、第2の実施形態における張線器1Bの一部分を模式的に示す概略側面図である。図13は、図12におけるC-C矢視断面図である。図14は、第2の実施形態における張線器1Bの一部分を模式的に示す概略側面図である。図15は、図14におけるD-D矢視断面図である。なお、図12、図13は、プレート部材7が破壊される前の状態を示し、図14、図15は、プレート部材7が破壊された後の状態を示す。
第1部材2は、第1取付対象物に取り付け可能な任意の取付部21を含む。図11に記載の例では、取付部21は、第1取付対象物に取り付け可能な第1フック部21fを含む。第2部材3は、第2取付対象物に取り付け可能な任意の第2取付部31を含む。図11に記載の例では、第2取付部31は、第2取付対象物に取り付け可能な第2フック部31fを含む。
図11に記載の例では、牽引要素4は、チェーン4bである。チェーン4bは、第1部材2を第2部材3に向けて牽引する。チェーン4bは、第1端部41と、第2端部42とを有する。図11に記載の例では、第1端部41は、ピン部材6に接続されている。また、第2端部42には、端部ストッパ43が配置されている。端部ストッパ43は、チェーン4bが、牽引装置5から外れるのを防止する。より具体的には、端部ストッパ43は、チェーン4bの第2端部42が牽引装置5側に戻される際に、当該第2端部42の戻り限界位置を規定する。
図11に記載の例では、回転体51は、ロードシーブである。回転体51は、回転軸AX2まわりを回転可能である。回転体51は、チェーン4bのうちの第1部材2と牽引装置5との間の部分を、牽引装置5側に引き込む。
図12に記載の例では、プレート部材7は、牽引装置5(より具体的には、牽引装置5の第1側壁52a)に着脱可能なように取り付けられている。また、図12に記載の例では、プレート部材7の第1部分73は、ユーザによって視認可能なように、牽引装置5の外側に配置されている。
図13に例示されるように、ピン部材6は、第1端部6aと、第2端部6bと、第1端部6aと第2端部6bとの間に配置される中央部分6cと、を有する。第1端部6aは、牽引装置5の第1側壁52aに形成された第1長孔部52hに挿入され、第2端部6bは、牽引装置の第2側壁53aに形成された第2長孔部53hに挿入される。
図15に記載の例では、張線器1Bは、プレート部材7の第1部分73の移動を停止させるストッパ部材82を備える。ストッパ部材82は、第1部分73が破壊された後、第1部分73がストッパ部材82を超えて第1方向DR1に移動することを防止する。より具体的には、第1部分73がピン部材6によって破壊されるときに、当該第1部分73は、ピン部材6(より具体的には、ピン部材6の第1端部6a)とストッパ部材82とによって挟持されるように構成される。
図15に記載の例では、張線器1Bは、ピン部材6よりも第1方向DR1側に配置される第2ピン部材83を有する。第2ピン部材83は、牽引要素4の環状端部41aに挿入される。この場合、万が一、ピン部材6が破断しても、牽引要素4の環状端部41aが第2ピン部材83によって支持される。
図16乃至図20を参照して、第3の実施形態における張線器1Cについて説明する。図16は、第3の実施形態における張線器1Cを模式的に示す概略2面図である。図16の上側には、概略平面図が記載され、図16の下側には、概略側面図が記載されている。図17は、第3の実施形態における張線器1Cの一部分を模式的に示す概略側面図である。図18は、図17におけるE-E矢視断面図である。図19は、第3の実施形態における張線器1Cの一部分を模式的に示す概略側面図である。図20は、図19におけるF-F矢視断面図である。なお、図17、図18は、プレート部材7が破壊される前の状態を示し、図19、図20は、プレート部材7が破壊された後の状態を示す。
第1部材2は、第1取付対象物に取り付け可能な任意の取付部21を含み、第2部材3は、第2取付対象物に取り付け可能な任意の第2取付部31を含む。取付部21、第2取付部31については、第1の実施形態または第2の実施形態において説明済みであるため、取付部21、第2取付部31についての繰り返しとなる説明は省略する。
図16に記載の例では、牽引要素4は、ベルト4cである。ベルト4cは、第1部材2を第2部材3に向けて牽引する。ベルト4cは、第1端部41と、第2端部とを有する。図16に記載の例では、第1端部41は、ピン部材6に接続されている。また、第1端部41は、ピン部材6を受容可能な孔を有する環状端部41aである。環状端部41aは、例えば、ベルト4cを折り返すことにより形成される。より具体的には、環状端部41aは、ベルト4cの折り返し部分4c-1をベルト4cの他の部分4c-2に固定することにより形成される。
牽引装置5は、牽引要素4に牽引力を付与する回転体51を有する。回転体51は、例えば、巻き取りドラムである。回転体51は、牽引要素4のうちの第1部材2と牽引装置5との間の部分を、牽引装置5側に引き込む。こうして、牽引要素4が、回転体51によって巻き取られる。
図17に記載の例では、プレート部材7は、牽引装置5(より具体的には、牽引装置5の第1側壁52a)に着脱可能なように取り付けられている。また、図17に記載の例では、プレート部材7の第1部分73は、ユーザによって視認可能なように、牽引装置5の外側に配置されている。
図18に例示されるように、ピン部材6は、第1端部6aと、第2端部6bと、第1端部6aと第2端部6bとの間に配置される中央部分6cと、を有する。第1端部6aは、牽引装置5の第1側壁52aに形成された第1長孔部52hに挿入され、第2端部6bは、牽引装置の第2側壁53aに形成された第2長孔部53hに挿入される。
図20に記載の例では、張線器1Cは、プレート部材7の第1部分73の移動を停止させるストッパ部材82を備える。ストッパ部材82は、第1部分73が破壊された後、第1部分73がストッパ部材82を超えて第1方向DR1に移動することを防止する。より具体的には、第1部分73がピン部材6によって破壊されるときに、当該第1部分73は、ピン部材6(より具体的には、ピン部材6の第1端部6a)とストッパ部材82とによって挟持されるように構成される。
図20に記載の例では、張線器1Cは、ピン部材6よりも第1方向DR1側に配置される第2ピン部材83を有する。第2ピン部材83は、牽引要素4の環状端部41aに挿入される。この場合、万が一、ピン部材6が破断しても、牽引要素4の環状端部41aが第2ピン部材83によって支持される。
(第4の実施形態)
図1乃至図21を参照して、第4の実施形態における張線器用のプレート部材7について説明する。図21は、第4の実施形態における張線器用のプレート部材7を模式的に示す概略2面図である。図21の上側には、概略側面図が記載され、図21の下側には、概略底面図が記載されている。
図1乃至図24を参照して、実施形態における張線器の組立方法について説明する。図22は、張線器本体部10を模式的に示す概略2面図である。図22の上側には、概略側面図が記載され、図22の下側には、概略底面図が記載されている。図23は、配置工程が実行された後の状態を模式的に示す概略側面図である。図24は、実施形態における張線器の組立方法の一例を示すフローチャートである。
Claims (12)
- 第1取付対象物に取り付け可能な第1部材と、
第2取付対象物に取り付け可能な第2部材と、
前記第1部材を前記第2部材に向けて牽引する牽引要素と、
前記牽引要素に牽引力を付与する回転体を有する牽引装置と、
前記牽引要素が接続されるピン部材と、
プレート部材と
を具備し、
前記プレート部材は、
前記ピン部材の第1端部を受容する第1受容部と、
前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と
を有する
張線器。 - 前記プレート部材は、前記牽引装置に着脱可能なように取り付けられ、
前記プレート部材の前記第1部分は、ユーザによって視認可能なように、前記牽引装置の外側に配置される
請求項1に記載の張線器。 - 前記許容値の大きさは、前記プレート部材の板厚に依存する
請求項1に記載の張線器。 - 前記牽引装置は、第1側部と、前記第1側部とは反対側の第2側部とを含み、
前記ピン部材によって破壊される部材は、前記牽引装置の前記第1側部のみに配置される
請求項1に記載の張線器。 - 前記第1部分が破壊されるときに、前記ピン部材は、前記牽引要素の延在方向に対して傾動するように構成される
請求項1乃至4のいずれか一項に記載の張線器。 - 前記牽引装置の第1側壁は、前記ピン部材の前記第1端部が挿入される第1長孔部を有し、
前記牽引装置の第2側壁は、前記ピン部材の第2端部が挿入される第2長孔部を有し、
前記ピン部材が前記牽引要素によって引っ張られる方向を第1方向と定義する時、前記第1長孔部の前記第1方向側の端は、前記第2長孔部の前記第1方向側の端よりも第1方向側に位置する
請求項5に記載の張線器。 - 前記プレート部材の前記第1部分の移動を停止させるストッパ部材を更に具備し、
前記第1部分が破壊されるときに、前記第1部分は、前記ピン部材と前記ストッパ部材とによって挟持されるように構成される
請求項1乃至4のいずれか一項に記載の張線器。 - 前記ストッパ部材は、前記牽引装置に螺合するボルトであるか、前記牽引要素の孔部に挿入される第2ピン部材であるか、あるいは、前記牽引要素の前記孔部に挿入される前記第2ピン部材に螺合するナットである
請求項7に記載の張線器。 - 前記プレート部材は、切り欠き部を有し、
前記切り欠き部は、前記第1部分の破壊の起点を規定する
請求項1乃至4のいずれか一項に記載の張線器。 - 前記牽引要素は、ワイヤ、チェーン、または、ベルトのうちの少なくとも1つによって構成される
請求項1乃至4のいずれか一項に記載の張線器。 - 牽引要素に牽引力を付与する回転体を有する牽引装置に固定部材を介して取り付けられる取付孔部と、
前記牽引要素に接続されるピン部材を受容する第1受容部と、
前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と
を具備する
張線器用のプレート部材。 - 第1取付対象物に取り付け可能な第1部材と、第2取付対象物に取り付け可能な第2部材と、前記第1部材を前記第2部材に向けて牽引する牽引要素と、前記牽引要素に牽引力を付与する回転体を有する牽引装置と、前記牽引要素に接続されるピン部材と、を有する張線器本体部を準備する工程と、
前記ピン部材の第1端部を受容する第1受容部と、前記ピン部材によって押圧され、前記牽引要素に作用する張力が許容値を超えることに応じて前記ピン部材によって破壊される第1部分と、を有するプレート部材を準備する工程と、
前記プレート部材の前記第1受容部に、前記ピン部材の前記第1端部を配置する工程と、
前記プレート部材を前記牽引装置に固定する工程と
を具備する
張線器の組立方法。
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| CN (1) | CN222026218U (ja) |
| TW (1) | TW202339380A (ja) |
| WO (1) | WO2023140306A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118943943A (zh) * | 2024-10-15 | 2024-11-12 | 国网甘肃省电力公司嘉峪关供电公司 | 一种电力用紧线器 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005211254A (ja) * | 2004-01-29 | 2005-08-11 | Fujii Denko Co Ltd | ワイヤロープ緊張器 |
| JP2006130595A (ja) * | 2004-11-05 | 2006-05-25 | Nagaki Seiki Co Ltd | 張線器 |
-
2023
- 2023-01-17 TW TW112101935A patent/TW202339380A/zh unknown
- 2023-01-19 JP JP2023575284A patent/JP7563806B2/ja active Active
- 2023-01-19 WO PCT/JP2023/001433 patent/WO2023140306A1/ja not_active Ceased
- 2023-01-19 CN CN202390000186.3U patent/CN222026218U/zh active Active
- 2023-01-19 KR KR1020247025617A patent/KR20240136995A/ko active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005211254A (ja) * | 2004-01-29 | 2005-08-11 | Fujii Denko Co Ltd | ワイヤロープ緊張器 |
| JP2006130595A (ja) * | 2004-11-05 | 2006-05-25 | Nagaki Seiki Co Ltd | 張線器 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118943943A (zh) * | 2024-10-15 | 2024-11-12 | 国网甘肃省电力公司嘉峪关供电公司 | 一种电力用紧线器 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN222026218U (zh) | 2024-11-19 |
| KR20240136995A (ko) | 2024-09-19 |
| JP7563806B2 (ja) | 2024-10-08 |
| JPWO2023140306A1 (ja) | 2023-07-27 |
| TW202339380A (zh) | 2023-10-01 |
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