JP4642555B2 - Rope fixing device - Google Patents

Description

  The present invention relates to a fixing device for a rope that grips various rope materials such as wire rope, PC steel wire, PC steel stranded wire (collectively referred to as “rope material” in this specification) with a stable and constant force. About.

  In particular, the present invention relates to a rope fixing device that prevents a strand of a rope material from breaking when the rope fixing device slides while gripping the rope material.

  In general, a wedge fixing type rope fixing device is known as a fixing device that grips a rope member with a constant force or completely restrains the rope material.

  2. Description of the Related Art Conventionally, there is a wedge fixing type rope fixing device in which a rope member is inserted through a cylindrical body having a conical inner peripheral surface, and a wedge body having a wedge-shaped cross section is inserted between the rope member and the inner peripheral surface of the cylindrical body. Are known.

  A fixing device for a rope that completely restrains a rope material such as an anchor fixes a wedge body to the rope material, and when the rope material tries to slide toward the small diameter side of the conical inner peripheral surface of the cylindrical body, The body comes into contact with the cylinder and completely restrains the rope material.

  On the other hand, the buffer fixing device for absorbing the impact energy of falling rocks, avalanches, vehicles, etc. is configured such that the wedge body and the rope material can slide relative to each other, and the rope material has a cylindrical conical shape. When sliding toward the smaller diameter side of the inner peripheral surface, the wedge body having a wedge-shaped cross section enters a narrow gap between the rope material and the inner peripheral surface of the cylindrical body, and compresses the rope material with a stronger force. However, since the wedge body and the rope material are configured to be relatively slidable, the rope material slides against the wedge body against the frictional force, and the collision energy is absorbed during the sliding process. The

  In the conventional fixing device for rope, the cross section of the wedge body in the direction perpendicular to the length direction of the rope member has an arc-shaped cross section. Such a cross section has a high rigidity against bending.

  Therefore, when the rope member slides toward the smaller diameter side of the conical inner peripheral surface of the cylindrical body, and the wedge body advances to the inner side of the outer cylinder, the wedge body becomes the shape of the conical inner peripheral surface of the outer cylinder. There was a problem that it did not follow the change and was damaged.

  On the other hand, the applicant of the present application has developed a fixing device for a rope having a wedge body that has flexibility and follows the shape change of the conical inner peripheral surface of the outer cylinder (Japanese Patent Laid-Open No. 2004-2004). 360121).

  Japanese Patent Application Laid-Open No. 2004-360121 discloses a rope fixing device having a wedge body having a tapered outer peripheral surface and a concave surface capable of accommodating a rope material on the inner peripheral surface, and a tapered hole into which the wedge body is inserted. In this embodiment, an inner groove in the axial direction is provided on the inner peripheral surface of the wedge body, and a slit is provided in the axial direction on the peripheral wall of the wedge body.

  According to the fixing device for a rope according to Japanese Patent Application Laid-Open No. 2004-360121, when the inner groove in the axial direction is provided on the inner peripheral surface of the wedge body, the cross section of the wedge body is easily curved due to the presence of the inner groove. Therefore, the wedge body has an advantage of following the shape change of the inner peripheral surface of the tapered hole of the outer cylinder when the wedge body advances to the back of the tapered hole of the outer cylinder.

  In addition, when the wedge body is provided with an axial slit, the cross-section of the wedge body is deformed in the circumferential direction due to the presence of the slit, and the wedge body is moved to the back of the tapered hole of the outer cylinder. This has the advantage of following the shape change of the inner peripheral surface of the tapered hole of the outer cylinder.

The technique described in Japanese Patent Laid-Open No. 2004-360121 can appropriately combine the inner groove and the slit.
JP 2004-360121 A

  However, in the technique described in Japanese Patent Application Laid-Open No. 2004-360121, the rope material is caught on the wedge body while the rope material is sliding with respect to the wedge body, the sliding is stopped, and the rope material is damaged. There was something to do.

  The applicant of the present application examines the phenomenon of the rope material sliding stop from various angles, and the damage of the rope material begins with the locking and breaking of some steel wires constituting the rope material. I found that there was a cause in the progress.

  The rope material is formed by twisting many steel wires having a small diameter.

  When the rope material slides with respect to the wedge body, the rope material slides in a state compressed from the surroundings by the wedge body, so the steel positioned on the outer periphery of the rope material before entering the wedge body The line tends to rise. These floated steel wires are caught by the entrance part of the wedge body (inner peripheral surface of the large-diameter side end of the wedge body) and broken, and the surface of the rope material becomes non-smooth so that another steel wire Will also break. That is, when a part of the steel wire of the rope material is caught by the wedge body, the breakage of the steel wire proceeds progressively.

  The steel wire may break even with the rope material entering the inner peripheral surface of the wedge body.

  Since the rope material that has entered the inner peripheral surface of the wedge body is compressed from the periphery, the steel wire enters a slight gap.

  In the technique described in Japanese Patent Application Laid-Open No. 2004-360121, an inner groove or a slit is provided on the inner peripheral surface of the wedge body.

  For this reason, the steel wire of the rope material enters the inner groove or slit, and in some places, the steel wire may engage with the inner groove or slit so that the steel wire cannot slide.

  Once some steel wires engage with the inner grooves and slits of the wedge body and cannot slide, or when those steel wires break, other steel wires break in a chain and the rope material becomes It becomes impossible to slide.

  In order to prevent the rope material from becoming non-slidable with respect to the wedge body, the applicant of the present application pays attention to the behavior of the steel wire of the rope material during sliding, and the steel wire is caught on the wedge body. It came to the knowledge that it must prevent.

  The problem to be solved by the present invention is to provide a fixing device for a rope which prevents the steel wire of the rope material from being caught on the wedge body and can smoothly slide the rope material against a certain friction. There is.

The fixing device for rope material according to the present invention is:
An outer cylinder having a bottom wall having an opening through which the rope material is inserted, and a peripheral wall having one end connected to the bottom wall and a funnel-shaped inclined surface on the inner peripheral surface;
A wedge body having an inner peripheral surface having a concave surface capable of accommodating the rope material, and an outer peripheral surface being a substantially tapered surface whose inclination is substantially aligned with the inner peripheral surface of the peripheral wall of the outer cylinder;
In the rope fixing device comprising a sealing member having an engaging portion that engages with the peripheral wall of the outer cylinder,
The wedge body has a slit formed in a direction parallel to the length direction of the rope member, and the inner peripheral surface of the end portion on the large diameter side is an inclined surface whose inner diameter expands toward the large diameter side end or It is characterized by an arc surface.

  The wedge body slit is formed at a predetermined distance from the large-diameter side end to the small-diameter side end of the wedge body, and the small-diameter side end portion of the wedge body has a smooth annular inner peripheral surface. it can.

  The slit of the wedge body includes a slit opened from the large diameter side end of the wedge body toward the small diameter side end, and a slit opened from the small diameter side end of the wedge body toward the large diameter side end in the circumferential direction. It is possible to be provided with a predetermined interval.

  When the wedge body is mounted between the outer cylinder and the rope member and is press-fitted a predetermined distance toward the small diameter side of the inner peripheral surface inclined in a funnel shape of the outer cylinder, the slit of the wedge body is at least a wedge. The large diameter side end of the body can be configured to be narrower than the diameter of the steel wire of the rope material.

  A locking portion for locking the wedge body is formed at the small-diameter side end of the inclined surface of the inner peripheral surface of the peripheral wall of the outer cylinder or the opening of the bottom wall of the outer cylinder. can do.

  An intersection of the inner end face of the slit of the wedge body and the inner peripheral surface of the wedge body may be formed as an inclined surface or an arc surface.

  The thickness of the wedge body and the distance of the slit of the wedge body are such that the shape of the small-diameter end of the wedge body can be aligned with the inner peripheral surface of the outer cylinder when the wedge body is press-fitted into the outer cylinder. Can be set to

  The slit of the wedge body may be formed to be inclined with respect to the length direction of the rope material.

  The sealing member may have a sealing portion for sealing the wedge body inside the outer cylinder.

  The fixing device for rope material according to the present invention includes an outer cylinder having a funnel-like inclined surface inserted through the rope material, and a concave surface in which the inner peripheral surface can accommodate the rope material, and the outer peripheral surface being the outer cylinder. And a wedge body having a tapered surface aligned with the inclined surface.

  The wedge body has a slit, and the inner peripheral surface of the end portion on the large diameter side is an inclined surface or an arc surface whose inner diameter expands toward the large diameter end.

  As a result, when the rope member slides with respect to the fixing device, the steel wire that has floated on the outer periphery of the rope member before entering the wedge member is guided to the inclined surface or arc surface inside the wedge member entrance. And can enter the inside of the wedge body without being caught by the wedge body.

  As a result, in the inner part of the wedge body entrance, a part of the steel wire is locked and broken, so that it is prevented from progressing to a sliding failure of the rope material or a breakage of a large-scale steel wire. A rope fixing device that slides smoothly against the force can be obtained.

  According to the present invention, since the wedge body has the slit, when the wedge body enters the small diameter side of the funnel-shaped inner peripheral surface of the outer cylinder, the wedge body is the funnel-shaped inner peripheral surface of the outer cylinder. The rope material can be deformed (reduced diameter) following the change in shape of the rope, and the rope material can be compressed and gripped from the outer periphery of the rope material with an equal force.

  In the rope fixing device of the present invention, the slit of the wedge body is formed at a predetermined distance from the large-diameter side end of the wedge body toward the small-diameter side end, and the small-diameter side end of the wedge body has a smooth annular inner peripheral surface. ing.

  According to the present invention, since the annular inner peripheral surface is located at the small-diameter end of the wedge body, there is no slit or inner groove in the portion where the rope material is most strongly compressed, and the steel wire is not slit or inner. Do not lock into the groove.

  Further, the smooth annular inner peripheral surface can guide the sliding steel wire to the center portion of the rope member, and has an action of allowing the steel wire that has entered the slit on the upstream side to escape from the slit.

  For this reason, possibility that a steel wire will engage with a slit is reduced, and the fixing device for ropes which can slide smoothly with respect to a rope material is realizable.

  According to the present invention, the steel wire is guided by the tapered surface or the inclined surface when the steel wire enters the wedge body due to the sliding of the rope material, smoothly enters the inside of the wedge material, and is smooth when the steel wire exits the wedge body. A steel wire can be smoothly slid out by the annular inner peripheral surface, and a rope fixing device in which the rope material can smoothly slide by these mutual actions can be realized.

  The present invention can provide a slit opened from the large-diameter side end of the wedge body toward the small-diameter side end and a slit opened from the small-diameter side end of the wedge body toward the large-diameter side end.

  Even in the rope fixing device having such a slit, the inner peripheral surface of the end portion on the large diameter side of the wedge body can be formed into an inclined surface or an arc surface. Also according to the present invention, the steel wire can smoothly enter the wedge body.

  According to the present invention, when the wedge body is press-fitted for a predetermined distance toward the small diameter side of the inner peripheral surface inclined like a funnel of the outer cylinder, the slit of the wedge body is at least at the large diameter side end of the wedge body. It is configured to narrow below the diameter of the steel wire.

  According to the present invention, the wedge body is pushed into the outer cylinder, the slit is narrowed to the diameter of the steel wire of the rope material at least at the large diameter side end of the wedge body, and the steel wire is prevented from entering the slit. can do.

  Accordingly, it is possible to realize a rope fixing device that prevents a steel wire from entering between the slits and being caught during sliding, and can smoothly slide with respect to the rope material.

  In the present invention, a locking portion for locking the wedge body is formed at the small-diameter side end of the inclined surface of the inner peripheral surface of the outer cylinder or the opening of the bottom wall.

  According to the present invention, by appropriately setting the height of the locking portion, that is, the distance in the direction parallel to the length direction of the rope material, after the wedge body has entered a certain distance inside the outer cylinder, The rope member can be held with a predetermined force by engaging with the locking portion and stopping. Thereby, the wedge body can slide the rope member with a constant frictional resistance.

  In the present invention, the intersection of the inner end surface of the slit of the wedge body and the inner peripheral surface of the wedge body is formed on an inclined surface or an arc surface.

  According to the present invention, when the steel wire that has entered between the slits of the wedge body during sliding of the rope material exits from the slit at the inner end of the slit, the end surface of the inner end of the slit and the inner peripheral surface of the wedge body Since the intersecting part of the above is formed on an inclined surface or an arc surface, it is possible to smoothly exit the slit.

  Thereby, it is possible to prevent the steel wire from entering between the slits and get caught, and to realize a rope fixing device that can slide smoothly with respect to the rope material.

  The present invention sets the thickness of the wedge body and the distance of the slit of the wedge body so that the shape of the small-diameter end of the wedge body is easily aligned with the inner peripheral surface of the outer cylinder when the wedge body is press-fitted into the outer cylinder. Can be set.

  That is, if the wedge body is thin and the slit is long, the small-diameter end portion of the wedge body is easily bent, whereas the thick large-diameter end portion is easily bent by the slit.

  Thereby, it is possible to obtain a rope fixing device whose shape easily matches the inner peripheral surface of the outer cylinder as a whole.

  In the present invention, the slit can be provided so as to be inclined with respect to the length direction of the rope member.

  According to the present invention, since the steel wire of the rope material moves in parallel with the length direction of the rope material during sliding, it can be prevented that the steel wire enters the slit and is locked.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view of a rope fixing device according to an embodiment of the present invention.

  As shown in FIG. 1, the rope fixing device 1 of the present embodiment includes an outer cylinder 2, a wedge body 3, and a sealing member 4. Reference numeral 5 denotes a rope material.

  Although the outer cylinder 2 is partially cut and shown in FIG. 1, it has a bottom wall 6 and a peripheral wall 7.

  The bottom wall 6 has an opening 8 through which five rope materials are inserted.

  The peripheral wall 7 has a cylindrical shape, one end is connected to the bottom wall 6, and a funnel-shaped inclined surface 9 and an engaging portion 10 are provided on the inner peripheral surface. In addition, although the engaging part 10 is a thread part in the example of FIG. 1, it does not need to be a thread part and may be an arbitrary engaging structure that can be appropriately performed by those skilled in the art.

  A step portion is formed at a connection portion between the opening portion 8 of the bottom wall and the funnel-shaped inclined surface 9 of the peripheral wall, and serves as a locking portion 18 of the wedge body 3.

  The wedge body 3 has a concave surface 11 in which the inner peripheral surface can accommodate the rope material 5, and the outer peripheral surface is a tapered tapered surface 12 whose inclination is substantially aligned with the funnel-shaped inclined surface 9 of the outer cylinder. .

  The wedge body 3 has a slit 13 in a direction parallel to the length direction of the rope member 5.

  Further, in the wedge body 3, the inner peripheral surface of the end portion on the large diameter side is a circular arc surface 14 whose inner diameter expands toward the large diameter side end.

  In this embodiment, the wedge body 3 is divided into two members. However, the wedge body 3 may be composed of one member, or may be composed of three or more members.

The slit 13 is formed at a predetermined distance from the large-diameter side end of the wedge body 3 toward the small-diameter side end, and the small-diameter side end of the wedge body 3 has a smooth annular inner peripheral surface 11a.
The sealing member 4 is used to prevent the engagement body 15 engaging with the engagement section 10 on the peripheral wall of the outer cylinder 2 and the wedge body 3 from falling off and to seal the wedge body 3 inside the outer cylinder 2. And a sealing portion 16.

  In the example of FIG. 1, the sealing member 4 has a nut-like portion at the head, and the engaging portion 15 can be screwed into the engaging portion 10 of the outer cylinder.

  The sealing member 4 has a through hole 17 through which the rope material is inserted. The through hole 17 passes through the nut-like portion and the sealing portion 16. In the present embodiment, the through-hole 17 has a different inner diameter between the nut-shaped portion and the sealing portion 16, but may have the same inner diameter.

  FIG. 2 shows a longitudinal sectional view of the rope material 5 assembled with the rope fixing device 1 attached thereto.

  To attach the rope fixing device 1, the rope member 5 is inserted into the opening 8 in the bottom wall of the outer cylinder, and the wedge body 3 is inserted between the rope member 5 and the funnel-shaped inclined surface 9 of the peripheral wall of the outer cylinder. The wedge body 3 is press-fitted by a predetermined distance toward the small diameter side of the funnel-shaped inclined surface 9 of the outer cylinder using means such as a jack.

  Since the tapered surface 12 of the wedge body 3 is aligned with the funnel-shaped inclined surface 9 of the outer cylinder 2, the wedge body 3 becomes the center of the rope member 5 as the wedge body 3 enters the inside of the outer cylinder 2. The rope material 5 is clamped and gripped.

  The force for clamping and gripping the rope material 5 is determined by the approach distance of the wedge body 3 into the outer cylinder 2.

  In addition, when the wedge body 3 enters the inside of the outer cylinder 2, the slit 13 narrows, the wedge body 3 deforms following the shape change of the funnel-shaped inclined surface 9 of the outer cylinder, and the rope member 5 is moved outside. Thus, the rope material 5 can be clamped and held with a uniform compressive force.

  In FIG. 2, there is a margin between the lower end of the wedge body 3 and the locking portion 18 of the outer cylinder 2 with the sealing member 4 attached, but in a state where the press-fitting is completed and the sealing member 4 is attached, Even if the rope fixing device 1 is designed such that the lower end of the wedge body 3 is in contact with the locking portion 18 of the outer cylinder 2 and the upper end of the wedge body 3 is in contact with the lower end of the sealing portion 16 of the sealing member 4. Good.

  Next, the operation of the rope fixing device 1 will be described.

  In a state where the rope fixing device 1 is mounted on the rope material 5, the rope material 5 is gripped by receiving a certain compressive force from the wedge body 3.

  Now, when a tension higher than the initial gripping force of the rope fixing device 1 is applied to the rope material 5, the rope material 5 moves relative to the rope fixing device 1.

  The present invention relates to a technique for smoothly sliding the rope member 5 while generating a constant frictional force in such a state.

  Below, the effect | action of the wedge body 3 when the rope material 5 slides is demonstrated.

  FIG. 3 shows the relationship between the wedge body 3 and the steel wire of the rope member 5.

  The rope material 5 is formed by twisting a small number of steel wires in one direction to form a bundle of medium diameter steel wires, and then twisting a plurality of bundles of the steel wires in the opposite direction. Is formed.

  A large number of steel wires are exposed and arranged on the outer peripheral portion of the rope member 5 in parallel with the length direction of the rope member 5 (in FIG. 3, only a part is shown for simplicity).

  When the wedge body 3 is attached to the outside of the rope member 5 as shown in FIG. 3, the steel wire of the rope member 5 becomes parallel to the slit 13 of the wedge member 3.

  Now, when the rope member 5 slides with respect to the wedge body 3, the steel wire enters the inside of the wedge body 3 while rubbing perpendicularly to the peripheral edge portion of the large diameter side end portion of the wedge body 3. Further, inside the wedge body 3, the steel wire moves parallel to the slits 13 of the wedge body 3 so as to easily enter the wedge body 3.

  FIG. 4 illustrates the operation of the wedge body 3 while the rope member 5 is sliding.

  Since the rope material 5 moves while being compressed from the outer periphery by the wedge body 3, the steel wire slightly floats before entering the inside of the wedge body 3 (the rope material 5 becomes slightly expanded).

  According to the wedge body 3 of the present invention, since the inner peripheral surface of the large-diameter side end portion of the wedge body 3 is the arc surface 14, the steel wire of the rope member 5 swelled somewhat is guided by the arc surface 14. And can smoothly enter the inside of the wedge body 3. The arrow on the right side of FIG. 4 indicates the force that the steel wire receives when entering the inside of the wedge body 3. The guide of the arc surface 14 prevents the steel wire from being caught by the inner peripheral edge of the wedge body entrance and breaking when the steel wire of the rope material enters the inside of the wedge body.

  Further, since the rope member 5 sliding inside the wedge body 3 receives a compressive force from the wedge body 3, the steel wire enters a space between the slits 13 in search of a slight gap.

  According to the wedge body 3 of the present invention, the rope member 5 is formed at the end portion on the small diameter side of the wedge body 3 that is most compressed, and the inner peripheral surface of the wedge body 3 is formed into a smooth annular inner peripheral surface 11a. It is possible to prevent the steel wire from being caught by the slit at that portion.

  Moreover, the annular inner peripheral surface 11a allows the steel wire that has entered between the slits 13 in the upstream portion to escape from the slit 13 and prevents the steel wire from being caught by the slits. The arrow on the left side of FIG. 4 indicates the force that the steel wire receives by the annular inner peripheral surface 11a.

  Thus, according to the present invention, when the rope member 5 slides with respect to the wedge member 3, the wedge member 3 reduces the diameter of the rope member 5 at the inlet and outlet portions of the wedge member 3. The steel wire that has been guided and floated can be prevented from being caught by a part of the wedge body 3 (the inner edge of the large-diameter side end or a slit).

  Next, other features of the present invention will be described.

  FIG. 5 shows a longitudinal cross-sectional view of a state in which the outer cylinder 2 and the wedge body 3 are attached to the rope member 5 and the sealing member 4 is attached to the outer cylinder 2.

  In FIG. 5, there is a margin between the lower end of the wedge body 3 and the locking portion 18, but preferably the lower end of the wedge body 3 substantially contacts the locking portion 18 when the wedge body 3 is completely press-fitted. Can be.

  FIG. 6 shows a cross-sectional view of the rope fixing device 1 and the rope member 5 as viewed in the direction of arrow AA in FIG.

  As described above, the rope material 5 is obtained by twisting a large number of steel wires 5a. In FIG. 6, only the outermost steel wire 5a of the rope material 5 is shown.

  According to the present embodiment, when the wedge body 3 is completely press-fitted, the wedge body 3 enters the inside of the outer cylinder 2, and the slit 13 of the wedge body 3 is narrowed as shown in FIG. Is set to be narrower than the diameter of the steel wire 5a of the rope member 5.

  As a result, the steel wire 5a cannot enter the slit 13 of the wedge body 3 in the first place, and the steel wire 5a can be prevented from being broken or stopped due to being caught by the slit 13 of the wedge body.

  The place where the gap between the slits 13 of the wedge body narrows to be equal to or smaller than the diameter of the steel wire 5a of the rope material may extend over most of the length direction of the slit 13, but at least at the large diameter side end of the wedge body 3 It is preferable that the gap between the slits 13 of the wedge body is narrowed to be equal to or smaller than the diameter of the steel wire 5a of the rope material.

  If the gap between the slits 13 of the wedge body narrows below the diameter of the rope steel wire 5a at the end of the wedge body 3 on the large diameter side, the initial state where the steel wire 5a enters the slit 13 is avoided, and the steel wire 5a The possibility of catching on the slit 13 can be greatly reduced.

  Next, the function and effect of the locking portion 18 will be described below.

  In the present embodiment, a stepped portion is formed at the connecting portion between the opening 8 in the bottom wall and the funnel-shaped inclined surface 9 in the peripheral wall, and serves as the locking portion 18 of the wedge body 3.

  The locking portion 18 only needs to be a stepped portion that can lock the wedge body 3, and a part of the funnel-shaped inclined surface 9 of the peripheral wall of the outer cylinder 2 or the opening of the bottom wall of the outer cylinder 2. 8 may be formed at any part of 8 or an intersection of the funnel-shaped inclined surface 9 of the outer peripheral wall of the outer cylinder and the opening 8 of the outer cylinder bottom wall.

  The locking portion 18 can control the compressive force of the wedge body 3 against the rope material 5.

  In order to control the compressive force of the wedge body 3 against the rope material 5 by the locking portion 18, when the wedge body 3 is press-fitted until the lower end of the wedge body 3 engages with the locking portion 18, the rope of the wedge body 3 The height of the wedge body locking portion 18, that is, the thickness of the locking portion 18 in the direction parallel to the rope material axis direction, or the outer cylinder of the locking portion 18 so that the compression force on the material 5 becomes a predetermined value. The position for 2 may be designed in advance.

Of course, in this case, the wedge body 3 is press-fitted until the lower end of the wedge body 3 engages with the locking portion 18 when the wedge body 3 is mounted. In addition, by determining the height, thickness, and position of the locking portion 18, even when the lower end of the wedge body 3 is not engaged with the locking portion 18 during mounting, As the material 5 slides, the wedge body 3 enters the inside of the outer cylinder 2 and engages with the locking portion 18, the wedge body 3 grips the rope material 5 with a predetermined force, and the rope material 5 is fixed. Can be slid with frictional resistance.

  By setting the frictional resistance to be equal to or less than the breaking strength of the rope member 5, if the locking portion 18 does not exist, the compression by the wedge body 3 increases without limit, leading to the breaking of the rope member 5. Can be prevented.

  The sealing member 4 has an effect of preventing the wedge body 3 from falling off.

  The sealing member 4 of the present invention engages the outer cylinder 2 after press-fitting the wedge body 3 into the outer cylinder 2.

  The sealing member 4 can prevent the wedge body 3 from falling off when the rope member 5 slides on the large diameter side of the funnel-shaped inclined surface 9 of the outer cylinder.

  The wedge body 3 of the present embodiment has an effect that the wedge body 3 as a whole easily conforms to the inner peripheral surface of the outer cylinder when the wedge body 3 is press-fitted into the outer cylinder 2.

  That is, if the wedge body 3 is thin and the slit 13 is long, the small-diameter end portion of the wedge body 3 is easily bent, while the thick large-diameter end portion is easily bent by the slit 13.

  Therefore, by appropriately setting the thickness of the wedge body 3 and the distance between the slits 13 of the wedge body, it is possible to obtain the rope fixing device 1 whose shape easily matches the inner peripheral surface of the outer cylinder 2 as a whole.

  In the above embodiment, the inner peripheral surface of the end portion on the large diameter side of the wedge body 3 is the circular arc surface 14 whose inner diameter expands toward the large diameter side end, but is not an arc surface but an inclined surface. May be.

  The “outer peripheral surface is generally tapered” of the wedge body 3 means that the bus bar is straight and the outer peripheral surface is a smooth conical shape. It is an inclined straight line, and includes a case where the outer peripheral surface is conical when viewed as a whole and a case where a spline-like groove is formed on the outer peripheral surface.

  As an example of the bus bar having irregularities, for example, there is one in which the outer peripheral surface has an annular protrusion, and the annular protrusion is in contact with the inner peripheral surface of the outer cylinder.

  The inclination of the tapered surface 12 of the wedge body is “substantially aligned” with the inclination of the funnel-shaped inclined surface 9 of the outer cylinder. The outer peripheral surface of the wedge body is a continuous tapered surface, and the entire outer peripheral surface is the outer cylinder peripheral wall. Including a case where the outer peripheral surface of the wedge body is uneven and a part of the outer peripheral surface is slidably in contact with the funnel-shaped inclined surface of the outer peripheral wall. Meaning.

  FIG. 7 is another embodiment of the present invention.

  In FIG. 7, the same parts as those in FIG.

  In the wedge body 3 of FIG. 7, the inclined surface 19 is formed with an intersection between the inner end surface 13 a of the slit 13 and the inner peripheral surface 11 of the wedge body 3.

  Due to the inclined surface 19 at the inner end portion of the slit 13, the steel wire 5 a that has entered between the slits 13 of the wedge body during the sliding of the rope material 5 smoothly exits from the slit 13 at the inner end of the slit 13. It is possible to exit from the slit 13. Thereby, the possibility that the steel wire 5a engages with a part of the wedge body 3 and breaks can be reduced.

  FIG. 8 shows another embodiment of the wedge body 3 of the present invention.

  In FIG. 8, the same parts as those in FIG.

  In the wedge body 20 of FIG. 8, the inner peripheral surface is a concave surface 21 capable of accommodating a rope material, and the outer peripheral surface is a tapered surface 22 whose inclination is substantially aligned with a funnel-shaped inclined surface of an outer cylinder (not shown). .

  The slit of the wedge body 20 includes a slit 23 opened from the large diameter side end of the wedge body 20 toward the small diameter side end, and a slit 24 opened from the small diameter side end of the wedge body toward the large diameter side end. It is provided at a predetermined interval in the circumferential direction.

  The inner peripheral surface of the end portion on the large diameter side of the wedge body 20 is formed on an inclined surface 25 whose inner diameter is expanded toward the large diameter side end.

  Instead of the inclined surface 25, an arc surface whose inner diameter expands toward the large-diameter side end of the wedge body 20 may be used.

  Also according to the present embodiment, as described in FIG. 4, the steel wire that has floated in the portion before entering the wedge body 20 is guided by the inclined surface 25 while the rope material slides with respect to the wedge body 20. It is possible to smoothly enter the inside of the wedge body 20. As a result, it is possible to obtain a rope fixing device that prevents the steel wire from being caught by a part of the wedge body and causing breakage and the like, and stably slides the rope material against a certain frictional force.

  In the above embodiment, the slits 13 and 23 are provided in a direction parallel to the length direction of the rope material, but the slits 13 and 23 may be provided inclined with respect to the length direction of the rope material.

  By providing slits 13 and 23 that are inclined with respect to the length direction of the rope material, the moving direction of the steel wire of the rope material intersects with the slits 13 and 23, and the steel wire of the rope material becomes the slit 13, 23. 23 can be prevented from entering and engaging.

1 is an exploded perspective view of a rope fixing device according to an embodiment of the present invention. The longitudinal cross-sectional view which showed the attachment state of the fixing apparatus for ropes by one Embodiment of this invention. Explanatory drawing which showed the relationship between the wedge body of this invention, and the steel wire of a rope material. Explanatory drawing explaining the effect | action of the wedge body of this invention. The longitudinal cross-sectional view of the fixing apparatus for ropes by other embodiment of this invention. The cross-sectional view of the fixing device for rope according to another embodiment of the present invention. Sectional drawing which showed the wedge body by other embodiment of this invention. The perspective view which showed the wedge body by other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rope fixing device 2 Outer cylinder 3 Wedge body 4 Sealing member 5 Rope material 5a Steel wire 6 Bottom wall 7 Peripheral wall 8 Opening part 9 Funnel-shaped inclined surface 10 Engagement part 11 Concave surface 11a Annular inner peripheral surface 12 Tapered surface 13 Slit 13a End surface 14 at the inner end of the slit Arc surface 15 Engaging portion 16 Sealing portion 17 Through hole 18 Locking portion 19 Inclined surface 20 Wedge body 21 Concave surface 22 Tapered surface 23 Slit 24 Slit 25 Inclined surface

Claims (8)

An outer cylinder having a bottom wall having an opening through which the rope material is inserted, and a peripheral wall having one end connected to the bottom wall and a funnel-shaped inclined surface on the inner peripheral surface;
A wedge body having an inner peripheral surface having a concave surface capable of accommodating the rope material, and an outer peripheral surface being a substantially tapered surface whose inclination is substantially aligned with the inner peripheral surface of the peripheral wall of the outer cylinder;
In the rope fixing device comprising a sealing member having an engaging portion that engages with the peripheral wall of the outer cylinder,
The wedge body has a slit formed in a direction parallel to the length direction of the rope member, and the inner peripheral surface of the end portion on the large diameter side is an inclined surface whose inner diameter expands toward the large diameter side end or It has an arc surface ,
The fixing device for a rope material , wherein an intersection of an inner end face of the slit of the wedge body and an inner peripheral surface of the wedge body is formed on an inclined surface or an arc surface .   The slit of the wedge body is formed at a predetermined distance from the large diameter side end to the small diameter side end of the wedge body, and the small diameter side end portion of the wedge body has a smooth annular inner peripheral surface. The fixing device for a rope material according to claim 1.   The slit of the wedge body includes a slit opened from the large-diameter side end to the small-diameter side end of the wedge body, and a slit opened from the small-diameter side end of the wedge body to the large-diameter side end in the circumferential direction. The fixing device for a rope material according to claim 1, wherein the fixing device is provided at a predetermined interval.   When the wedge body is mounted between the outer cylinder and the rope member and is press-fitted a predetermined distance toward the small diameter side of the inner peripheral surface inclined like a funnel of the outer cylinder, the slit of the wedge body is at least 2. The fixing device for a rope material according to claim 1, wherein an end portion on the large diameter side of the wedge body is configured to be narrower than a diameter of a steel wire of the rope material.   A locking portion for locking the wedge body is formed at the small-diameter side end of the inclined surface of the inner peripheral surface of the peripheral wall of the outer cylinder or the opening of the bottom wall of the outer cylinder. The fixing device for a rope material according to any one of claims 1 to 4.   The thickness of the wedge body and the distance of the slit of the wedge body are such that the shape of the small-diameter end of the wedge body can be aligned with the inner peripheral surface of the outer cylinder when the wedge body is press-fitted into the outer cylinder. The fixing device for a rope material according to claim 2, wherein The rope material fixing device according to claim 1, wherein the slit of the wedge body is formed to be inclined with respect to a length direction of the rope material. The rope member fixing device according to claim 1 , wherein the sealing member has a sealing portion for sealing the wedge body inside the outer cylinder. .

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