JP3170442U - End structure of rope material - Google Patents

Abstract

Provided is a rope material terminal structure capable of preventing the occurrence of slack of a wire rope over time. A fixing jig 3 includes a wedge member 12 having a tapered outer peripheral surface, a socket 11 for press-fitting the wedge member 12, and a press-fitting receiver provided in the socket 11 for press-fitting the wedge member 12 from the other end side. The end of the wire rope 2 is pressure-bonded between the wedge member 12 and the press-fit receiving hole 22 by inserting the wedge member 12 into the press-fit receiving hole 22. The fixing jig 3 includes a connecting member 13 whose one end is screwed into the socket-side female screw hole 23, and has a pressing portion 32 that press-contacts the socket 11 at one end of the connecting member 13. By pressing the press contact portion 32 on one end side of the connecting member 13 against the wedge member 12, the press contact portion pushes the wedge member 12 to one side and movement to the other side of the wedge member 12 is restricted. [Selection] Figure 1

Description

  The present invention relates to an end structure of a rope member that connects a wire rope and a rope end fitting.

  Conventionally, as a wire rope terminal structure, a rope terminal portion is inserted from an inner diameter side opening of a cylindrical socket having an inner peripheral surface tapered, and a wedge-shaped stopper is driven into the terminal portion from the cylindrical side opening. There is a wire rope terminal structure (for example, Patent Document 1) and a rope material terminal fixture (Patent Document 2), and in the terminal structure, the outer periphery of the rope terminal part is driven by driving a stopper as a wedge member into the rope terminal part. Expands and presses against the inner periphery of the cylindrical socket, and the rope end is firmly fixed in the cylindrical socket.

  And in a guard fence such as falling rocks using a wire rope (for example, Patent Document 3) and a guard rope for road (for example, Patent Document 4), a female screw cylinder is connected to the cylindrical opening of the cylindrical socket, and the female screw cylinder is connected to the female screw cylinder. There are known cable end fittings (for example, Patent Document 5 and Patent Document 6) in which one end of a terminal bolt is screwed and the other end of the terminal bolt is connected to a column.

Japanese Utility Model Publication No. 4-33693 Japanese Patent Laid-Open No. 7-119798 JP 2005-213747 A JP-A-8-333731 JP-A-10-168824 JP-A-5-179623

In search end fitting for use in the above rockfall such protection and road guard rope is linked to the wire rope by the wedge action of the stopper over, or elongation wire rope by direct sunlight heat, precipitation of snow in snowy areas There is a risk that the wire rope may be loosened by force. At the time of construction of the cable end fitting, a tension of about 5 kN is applied to the wire rope as an initial tension, but after the passage of time, the initial tension can be secured due to the influence of the direct sunlight and the snow settling force described above. There are cases where it is impossible.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to provide a rope material terminal structure that can prevent the wire rope from slackening over time.

The invention of claim 1 includes a rope member, a fixing jig fixed to the end of the rope member, and a rope end fitting having one end connected to the fixing jig and the other end connected to the connected portion. The fixing jig includes a wedge member having a tapered outer peripheral surface on one end side, a socket for press-fitting the wedge member, and an insertion hole provided at one end of the socket for inserting the end of the rope member; A press-fitting receiving hole provided in the socket in communication with the insertion hole and press-fitting the wedge member;
In the end structure of the rope member that is fixed to the fixing jig by crimping an end of the rope member between the wedge member and the press-fitting receiving hole by inserting the wedge member into the press-fitting receiving hole, An end portion of the rope material is divided to form a divided end portion, and a plurality of grooves for inserting the divided end portion are provided on an outer peripheral surface of the wedge member, and the wedge member is inserted in the state where the divided end portion is inserted into the groove. The socket is provided with a socket-side female screw hole on the other end side of the press-fit receiving hole, and the fixing jig is a connecting member for screwing one end side into the socket-side female screw hole. With
The cable end fitting is connected to the other end of the connecting member, and a pressure contact portion that presses the wedge member is provided on one end side of the connecting member.

  The invention of claim 2 is characterized in that a female screw hole is provided at the other end of the connecting member, and a male screw portion screwed into the female screw hole is provided in the cable end fitting.

  According to a third aspect of the present invention, the protrusion-shaped pressure contact portion is provided on one end surface of the connecting member, and a distal end pressure contact surface that is in pressure contact with the other end surface of the wedge member is provided at the distal end of the pressure contact portion. Is disposed on the other side of the other end surface of the wedge member, and the tip pressure contact surface has a smaller area than the other end surface of the wedge member.

  The invention according to claim 4 is characterized in that the tip pressure contact surface is pressed into the center of the plurality of grooves.

  The invention of claim 5 is characterized in that a tool engaging portion having a flat surface is provided on the outer periphery of the connecting member.

  According to the invention of claim 1, the rope member is fixed to the fixing jig by press-fitting the wedge member into the press-fitting receiving hole of the socket and crimping the end of the rope member between the wedge member and the press-fitting receiving hole. In this state, the connecting member is screwed to the other end side of the socket, and the press contact portion on one end side of the connecting member is pressed to the wedge member so that the press contact portion pushes the wedge member to one side and the other of the wedge member. The movement to the side is restricted, and the occurrence of slack in the wire rope can be prevented.

  According to the second aspect of the present invention, the cable end fitting can be connected to the fixing jig by screwing the male screw part into the female screw hole at the other end of the connecting member.

  According to the third aspect of the present invention, the connecting member is screwed into the socket-side female screw hole so that the tip pressure contact surface comes into pressure contact with the other side surface of the wedge member, whereby the pressure contact portion pushes the wedge member to one side. Since the movement of the wedge member to the other side can be restricted and the tip pressure contact surface has a smaller area than the other side surface of the wedge member, the end of the divided end can be arranged on the other side of the other end surface position of the wedge member. Thus, the end of the rope member can be firmly fixed to the fixing jig.

  According to the fourth aspect of the present invention, the front end pressure contact surface is pressed against the center of the plurality of grooves so that the wedge member is evenly pressed by the front end pressure contact surface, and the end of the divided end is separated from the other end surface of the wedge member. The end of the rope member can be fixed to the fixing jig in a state of being arranged on the side.

  According to the fifth aspect of the present invention, it is possible to perform the screwing operation by turning the connecting member using the tool engaging portion.

It is sectional drawing of the principal part which shows Example 1 of this invention. FIG. 2A is a sectional view, and FIG. 2B is a front view. FIG. 3A is a side view, and FIG. 3B is a front view. FIG. 4A is a rear view, FIG. 4B is a side view, and FIG. 4C is a front view. It is a whole top view same as the above.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below do not limit the contents of the present invention described in the claims of utility model registration. In addition, all the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new rope material terminal structure different from the conventional one, an unprecedented rope material terminal structure is obtained, and the rope material terminal structure will be described.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 5 show Embodiment 1 of the present invention. As shown in FIG. 1, a rope material terminal structure 1 according to this embodiment includes a wire rope 2 as a rope material and an end portion of the wire rope 2. A fixing jig 3 to be fixed and a cable end fitting 5 having one end connected to the fixing jig 3 and the other end connected to a column 4 as a connected portion are provided. Examples of the column 4 include a terminal column such as a protective fence such as a falling rock and a guard rope. The wire rope 2 is a stranded wire twisted from a steel wire.

  The fixing jig 3 includes a socket 11, a wedge member 12 that is press-fitted into the socket 11, and a connecting member 13 that connects one end to the other end of the socket 11. The socket 12 and the connecting member 13 are made of steel or the like. The wedge member 12 is made of an aluminum alloy whose hardness is lower than that of the steel.

  The socket 11 has an insertion hole 21 at one end which is a tip, and has a tapered press-fit receiving hole 22 which is in communication with the communication hole 21 and press-fits the wedge member 12, and the press-fit receiving hole 22 is connected to one end side. A socket-side female screw hole 23 is formed on the other end side of the press-fit receiving hole 22. In addition, flat surfaces 24, 24 parallel to opposite positions are formed on the outer periphery of the socket 11 at one end side. These flat surfaces 24, 24 serve as tool engaging portions, and a tool is placed on the flat surfaces 24, 24. The socket 11 can be rotated by engaging and can be prevented from rotating.

  The wedge member 12 has a tapered outer peripheral surface that narrows at one end corresponding to the press-fitting receiving hole 22, and three grooves 26, 26, 26 are arranged at equal intervals in the circumferential direction on the outer peripheral surface. The groove 26 is formed in the crossing direction slightly inclined with respect to the central axis direction of the wedge member 12 and is formed over the entire length of the wedge member 12, and the end portion of the wire rope 2 is divided into three parts. The end portions 2S, 2S, and 2S are divided and divided, and a part of the cross section of each of the divided end portions 2S, 2S, and 2S is disposed in each of the grooves 26, 26, and 26. As shown in FIG. The distal end 2T is disposed on the other end side from the other end surface 12T of the wedge member 12.

  The connecting member 13 has a substantially cylindrical shape, has a male screw portion 31 screwed into the socket-side female screw hole 23 at one end, and has one end surface 13S on one end side of the male screw portion 31. A substantially cylindrical pressure contact portion 32 projects from the center of the end surface 13S toward one end, and the pressure contact portion 32 has a smaller diameter than the male screw portion 31 and is at the center of the other end surface 12T of the wedge member 12. A tip pressure contact surface 33 that is in pressure contact is provided. The center of the other end surface 12T is the center of the plurality of grooves 26, 26, 26. The area of the tip pressure contact surface 33 is smaller than the other end surface 12T.

  Further, a female screw hole 34 is formed on the other end side of the connecting member 13, and flat surfaces 35, 35 parallel to the opposing positions are formed on the outer periphery of the female screw hole 34. The surfaces 35 and 35 serve as tool engaging portions, and the connecting member 13 can be rotated or prevented from rotating by engaging a tool with the flat surfaces 35 and 35. The other end of the connecting member 13 is provided with a portion where the flat surfaces 35 are not formed.

  The cable end fitting 5 is made of a steel bar having a circular cross section, and has a male screw part 41 at one end, and the male screw part 41 is screwed into the female screw hole 34 of the connecting member 13 to thereby connect the connecting part 13. Connected to member 13. In addition, flat surfaces 42 and 42 parallel to the opposing positions are formed on the outer periphery on the male screw portion 41 side. These flat surfaces 42 and 42 become tool engaging portions, and a tool is applied to the flat surfaces 42 and 42. The cable end fitting 5 can be rotated by engaging and can be prevented from rotating. Further, the cable end fitting 5 has a male screw portion 43 at the other end. As shown in FIG. 5, the male screw portion 43 side is inserted into the support column 4 and the other end of the male screw portion 43 is inserted. The cable end fitting 5 can be connected to the column 4 by screwing the nuts 44, 44 as fixing means.

  Next, the construction method of the terminal structure 1 will be described. The end portion of the wire rope 2 is inserted into the insertion hole 21, and the end portion is divided into three divided end portions 2S. The end 2T of the divided end portion 2S is the other end side from the other end surface 12T of the wedge member 12. In this state, the wedge member 12 is inserted into the press-fitting receiving hole 22 of the socket 11, and the other end surface 12T of the wedge member 12 is hit with a hammer or the like. Then, the wedge member 12 is press-fitted by a hydraulic jack. The press-fit load by the hydraulic jack is exemplified as about 70 kN.

  In this state, with the wedge member 12 being press-fitted into the socket 11, the male screw portion 31 of the connecting member 13 is screwed into the socket-side female screw hole 23, and the distal end pressure contact surface 33 is pressed into contact with the other end surface 12T of the wedge member 12. To do. Thereby, the wedge member 12 can be pressed against one end side and the movement of the wedge member 12 to the other side can be restricted. In this case, since the split end 2S is disposed in the groove 26 so that the end 2T of the split end 2S protrudes from the other end surface 12T of the wedge member 12 to the other end, the split end 2S is firmly fixed. In addition, since the tip pressure contact surface 33 has a smaller area than the other side surface 11T of the socket 11, the end portion 2T of the split end portion 2S protruding from the position of the socket 11 does not get in the way, and the wedge member 12 can be removed. It can be surely pressed by the pressure contact part 32.

  Thus, in this embodiment, corresponding to claim 1, the wire rope 2 as a rope material, the fixing jig 3 fixed to the end of the wire rope 2, and one end connected to the fixing jig 3. The fixing jig 3 includes a wedge member 12 having a tapered outer peripheral surface on one end side, and a socket 11 for press-fitting the wedge member 12. An insertion hole 21 provided at one end of the socket 11 for inserting the end portion of the wire rope 2 and a press-fitting receiver provided in the socket 11 in communication with the insertion hole 21 for press-fitting the wedge member 12 from the other end side. Rope material provided with a hole 22 and fixing the end portion of the wire rope 2 between the wedge member 12 and the press-fitting receiving hole 22 by inserting the wedge member 12 into the press-fitting receiving hole 22 and fixing it to the fixing jig 3. In the terminal structure, the end portion of the wire rope 2 is divided into the split end portion 2. The wedge member 12 is provided with a plurality of grooves 26 into which the split end 2S is inserted, and the wedge member 12 is press-fitted into the socket 11 with the split end 2S inserted into the groove 26. The socket-side female screw hole 23 is provided on the other end side of the press-fit receiving hole 22, and the fixing jig 3 includes a connecting member 13 that is screwed into the socket-side female screw hole 23, and the other end of the connecting member 13. In addition to connecting the cable end fitting 5 to one end of the connecting member 13, a press contact portion 32 that presses against the wedge member 12 is provided, so that the wedge member 12 is press-fitted into the press-fit receiving hole 22 of the socket 11, and the wedge member 12 is press-fitted. By crimping the end of the wire rope 2 between the receiving hole 22, the wire rope 2 is fixed to the fixing jig 3, and in this state, the connecting member 13 is screwed to the other end side of the socket 11 to be connected. By pressing the pressure contact portion 32 on one end side of the member 13 to the wedge member 12, the pressure contact portion 32 brings the wedge member 12 to one side. It is restricted to move in the other side of the wedge member 12 along with to the occurrence of slack in the wire rope 2 can be prevented.

  Thus, in this embodiment, corresponding to claim 2, a female screw hole 34 is provided at the other end of the connecting member 13, and the male screw portion 41 screwed into the female screw hole 34 is connected to the cable end fitting 5. Since the male screw portion 41 is screwed into the female screw hole 34 at the other end of the connecting member 13, the cable end fitting 5 can be connected to the fixing jig 3.

  In this way, in this embodiment, corresponding to claim 3, a protruding pressure contact portion 32 is provided on one end surface 13S of the connecting member 13, and the other end surface 12T of the wedge member 12 is provided at the tip of the pressure contact portion 32. Since the distal end pressure contact surface 33 to be in pressure contact is provided, the terminal end 2T of the split end portion 2S is disposed on the other side of the other end surface 12T of the wedge member 12, and the distal end pressure contact surface 33 has a smaller area than the other end surface 12T of the wedge member 12. By screwing the connecting member 13 into the side female screw hole 23, the distal end pressure contact surface 33 comes into pressure contact with the other side surface 12S of the wedge member 12, whereby the pressure contact portion 32 pushes the wedge member 12 to one side and the wedge member 12 is pressed. Since the distal end pressure contact surface 33 has a smaller area than the other side surface 12T of the wedge member 12, the distal end 2T of the split end portion 2S is located on the other side from the position of the other end surface 12T of the wedge member 12. So that the end of the wire rope 2 is fixed to the fixing jig 3 It can be firmly fixed.

  Further, in this embodiment, in correspondence with the fourth aspect, the tip pressure contact surface 33 is pressed into the center of the plurality of grooves 26, 26, 26, so that the wedge member 12 is pressed evenly by the tip pressure contact surface 33. In addition, the end of the wire rope 2 can be fixed to the fixing jig 3 with the end 2T of the split end 2S disposed on the other side of the other end surface 12T of the wedge member 12.

  In this way, in this embodiment, since the tool engaging portion having the flat surfaces 35 and 35 is provided on the outer periphery of the connecting member 13 in correspondence with the fifth aspect, the connecting members are formed using the flat surfaces 35 and 35. Turn 13 to perform screwing operation.

  Further, as an effect of the embodiment, since the groove 26 is arranged in a direction intersecting with the axial direction of the wedge member 12, the fixing strength can be improved with respect to the tensile force applied to the wire rope 2.

  In addition, this invention is not limited to a present Example, A various deformation | transformation implementation is possible within the range of the summary of this invention.

1 Terminal structure 2 Wire rope (rope material)
2S Divided end 2T Terminal 3 Fixing jig 4 Post (connected part)
5 Cable end bracket
11 Socket
12 Wedge material
12T other end
13 Connecting member
13S one end
21 Insertion hole
22 Press-fit receiving hole
23 Socket side female screw hole
26 Groove
32 Pressure weld
33 Tip pressure contact surface
34 Female screw hole
35 Flat surface (tool engaging part)
41 Male screw

Claims (5)

A rope member, a fixing jig fixed to the end of the rope member, and a cable end fitting having one end connected to the fixing jig and the other end connected to the connected portion,
The fixing jig includes a wedge member having a tapered outer peripheral surface at one end, a socket for press-fitting the wedge member, an insertion hole provided at one end of the socket, and an end of the rope member, and the insertion hole. A press-fitting receiving hole provided in the socket in communication with a hole and press-fitting the wedge member;
In the end structure of the rope member that is fixed to the fixing jig by crimping an end of the rope member between the wedge member and the press-fitting receiving hole by inserting the wedge member into the press-fitting receiving hole,
The end portion of the rope member is divided to form a divided end portion, a plurality of grooves for inserting the divided end portion are provided on the outer peripheral surface of the wedge member, and the wedge is inserted in the state where the divided end portion is inserted into the groove. Press fit the member into the socket;
The socket is provided with a socket-side female screw hole on the other end side of the press-fit receiving hole, and the fixing jig includes a connecting member for screwing one end side into the socket-side female screw hole,
The rope member end structure is characterized in that the cable end fitting is connected to the other end of the connecting member, and a pressure contact portion that presses the wedge member is provided on one end side of the connecting member. The end structure of a rope member according to claim 1, wherein a female screw hole is provided at the other end of the connecting member, and a male screw part screwed into the female screw hole is provided in the rope end fitting. Protruding pressure contact portions are provided on one end surface of the connecting member, a tip pressure contact surface is provided at the tip of the pressure contact portion to press contact with the other end surface of the wedge member, and the end of the divided end portion is the other end surface of the wedge member. The end structure of the rope member according to claim 2, wherein the tip end pressure contact surface is disposed on the other side and has a smaller area than the other end surface of the wedge member. The end structure of the rope member according to claim 3, wherein the tip pressure contact surface is pressed into the center of the plurality of grooves. The rope material terminal structure according to claim 4, wherein a tool engaging portion having a flat surface is provided on an outer periphery of the connecting member.

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