JP6642543B2 - Hanging tools - Google Patents

Description

  The present invention relates to a hanger.

  The object to be suspended (work) is formed by connecting one end of the long member in the longitudinal direction to the base end of a short member having a free end at the distal end. There is a crane guy line in which a base end of a rod connecting portion (short member) is rotatably connected.

  If a long work is hung vertically, the height of the work space for hanging it will be high.However, if the work space is restricted, the work cannot be hung vertically. (For example, see Patent Document 1).

JP-A-2004-331390

  The hanging tool disclosed in Patent Literature 1 suspends a long member with the long member being horizontal. However, when the above-described work is hung by the hanging tool, there is a problem that the short member shakes, the hanging posture is broken, the work is deformed, or it is difficult to work in a state where the work is hung. Was.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and has as its object to allow a worker to easily remove a work from a hanging tool for hanging a long member, An object of the present invention is to provide a hanger capable of preventing a short member connected to the member from swinging.

  In order to solve the above-mentioned problem, the invention according to claim 1 suspends a work in which a base member of a short member having a free end is connected to one end in a longitudinal direction of a long member. Tool.

  The hanging device includes a main body having a predetermined length in a lateral direction, and a supporting portion and a movement restricting portion provided on the main body, respectively.

  The support portion is provided so as to form a pair downward in the main body portion, and has a longitudinal direction in a short direction of the long member oriented in the same direction as the direction of the predetermined length of the main body portion. A first arm positioned on one side of the long member to restrict movement of the long member to one side; and a first arm positioned on the other side in the short side direction of the long member. It has a second arm that regulates movement to the other side.

  The movement restricting section restricts movement of the short member with respect to the long member.

  The first arm is suspended from the main body so as to be rotatable in a direction in which a lower end of the first arm is separated from and brought into contact with the second arm, and the first arm has a first side face facing the second arm. There is a long member mounting portion that protrudes toward the two arms and on which the long member is mounted.

  In the open state in which the first arm is hung from the main body, the projecting portion is provided between a projecting end of the long member mounting portion and a second side surface of the second arm facing the first arm. The first arm and the second arm are provided on the support portion such that a long member insertion gap in which a width from an end to the second side surface is longer than a length of the long member in a short direction is formed. It is characterized by the following.

  The invention according to claim 2 is the invention according to claim 1, wherein the width between the protruding end portion and the second side surface is shorter than the length of the long member in the short direction. A closed state holding means for holding a closed state in which one arm is closer to the second arm than the open state is provided.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the second arm is supported by being suspended from the main body such that a lower end of the second arm is rotatable in a direction in which the lower end of the second arm is moved toward and away from the first arm. It is characterized by being performed.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the second arm is mounted on the second side surface so as to protrude toward the first arm and to be mounted with the long member. It has a part.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the movement restricting portion includes a third arm and a fourth arm provided to form a pair on the main body portion downward. The third arm is suspended from the main body so as to be rotatable in a direction in which a lower end portion is separated from and brought into contact with the fourth arm, and is attached to a third side surface facing the fourth arm. And a short member mounting portion protruding toward the fourth arm and on which the short member is mounted.

  According to the first aspect of the present invention, the worker can easily remove the work from the hanging tool for suspending the long member, and does not push and spread between the first arm and the second arm by hand. However, the work can be inserted into the long member insertion gap or extracted from the long member insertion gap. Further, the movement of the short member is restricted by the movement restricting portion, so that the short member can be prevented from swinging.

  In the invention according to claim 2, it is not necessary to separately provide a member such as a rubber band for bundling the first arm and the second arm. Further, it is possible to remove the hanging tool from the work only by releasing the holding of the closed state by the closed state holding means.

  In the invention according to claim 3, it is easy to insert the work into the elongated member insertion gap.

  In the invention according to claim 4, the long member can be easily mounted on the hanging device.

  In the invention according to claim 5, the short member can be inserted into the short member insertion gap or the long member insertion gap without the operator pushing and expanding the space between the third arm and the fourth arm by hand. It can be pulled out from, and has excellent workability.

FIG. 1 is a schematic side view of the crane. FIG. 2 is a side view of the hanging tool according to the first embodiment of the present invention in which a guy line as a work is suspended. FIG. 3 is a plan view of the guy line. FIG. 4 is a side view of the guy line. FIG. 5 is a side view of the hanging device of the embodiment. FIG. 6 is a side view of a main body of the hanging device of the embodiment. FIG. 7 is a front view of the main body of the above. FIG. 8 is a side view of a support portion of the above-mentioned hanging device. FIG. 9 is a front view of the support unit according to the third embodiment. FIG. 10 is a side view of the movement restricting portion of the hanging tool of the embodiment. FIG. 11 is a plan view of the movement restricting unit according to the third embodiment. FIG. 12 is a cross-sectional view showing a state in which the hanging tool is located above the guy line. FIG. 13 is a cross-sectional view of a state where the support unit is lowered to the main body rod of the guy line. FIG. 14 is a sectional view taken along line AA of FIG. FIG. 15 is a sectional view taken along line BB of FIG. FIG. 16 is a side view showing a state in which a guy line suspended by the suspending tool is located above the intermediate boom. FIG. 17 is a side view of a state in which a guy line suspended by the above-described suspension tool is placed on the intermediate boom. FIG. 18 is a front view of a hanger according to the second embodiment of the present invention, in which a guy line as a work is hung. FIG. 19 is a side view of a third embodiment of the present invention, in which a short member of a suspending tool that suspends a guy line as a work is partially omitted. FIG. 20 is a side view showing a state in which a guy line suspended by the suspending tool is located above the intermediate boom in the embodiment. FIG. 21 is a side view showing a state in which a guy line suspended by the above-described hanging tool is placed on the intermediate boom in the embodiment.

  The present invention relates to a crane guy line hanger. A hanging device according to a first embodiment of the present invention will be described with reference to FIGS. First, an overall configuration of the mobile crane according to the first embodiment will be schematically described with reference to FIG.

  The mobile crane is the crawler crane 1 in the first embodiment. The crawler crane 1 includes a crawler-type lower traveling body 11 and an upper revolving body 12 that is rotatably mounted on the lower traveling body 11.

  The upper swing body 12 has a swing frame 121 as a base. A base end of a boom 13 (a lower boom 131 described later) as a work attachment is rotatably attached to a front portion of the turning frame 121 so that the boom 13 can be raised and lowered with respect to the turning frame 121. The boom 13 is a lattice boom having a lattice structure and a predetermined length in the axial direction, and includes a lower boom 131, an intermediate boom 132, and an upper boom 133.

  A base end of the mast 14 is rotatably attached to a front portion of the turning frame 121 so that the mast 14 can be raised and lowered with respect to the turning frame 121. The tip of the boom 13 (upper boom 133) and the tip of the mast 14 are connected by the guy line 2.

  The turning frame 121 has a cab 122 (operating cab) at the front and a counterweight 123 at the rear.

  A mast 14 side spreader is provided at the tip of the mast 14, and a turning frame 121 side spreader is provided on the turning frame 121. A boom hoisting rope 161 is hung between the mast 14 side spreader and the turning frame 121 side spreader, and one end of the boom hoisting rope 161 is fixed to a boom hoisting winch 171 attached to the turning frame 121. When the boom hoisting rope 161 is wound around the boom hoisting winch 171 or unwound from the boom hoisting winch 171, the mast 14 undulates, and the boom 13 undulates through the guy line 2 due to the undulation of the mast 14.

  A boom point sheave 181 and an auxiliary sheave 182 are rotatably provided at the tip of the boom 13 (upper boom 133). A main hook 191 is suspended from the boom point sheave 181 via a main hoisting rope 162, and an auxiliary hook 192 is suspended from the auxiliary sheave 182 via an auxiliary hoisting rope 163.

  One end of the main hoist rope 162 is fixed to the boom 13 (upper boom 133), and the other end of the main hoist rope 162 is wound around a main winch 172 provided on the upper swing body 12 through a boom point sheave 181. . The main hook 191 is wound up or down by the main winding winch 172 via the main hoisting rope 162.

  One end of the auxiliary hoisting rope 163 is fixed to the auxiliary hook 192, and the other end of the auxiliary hoisting rope 163 is wound around the auxiliary hoisting winch 173 provided on the upper rotating body 12 through the auxiliary sheave 182. The auxiliary hook 192 is wound up or down by the auxiliary winch 173 via the upper auxiliary rope 163.

  The boom 13 is configured such that the axial length can be changed. The lower boom 131, the intermediate boom 132, and the upper boom 133 are mechanically connected to the boom 13 in this order from the side closer to the upper swing body 12. The base end of the boom 13 (lower boom 131) is attached to the front of the upper revolving unit 12 with a boom foot pin so that the boom 13 can rotate around a horizontal axis.

  The intermediate boom 132 is constituted by one or more unit booms. By changing the number and length of the unit booms connected in the axial direction, the axial length of the boom 13 can be changed. At this time, the length of the guy line 2 is also changed according to the length of the intermediate boom 132. In the first embodiment, when the unit boom is extended to increase the length of the intermediate boom 132, the guy line 2 having the same length as the unit boom to be extended is also extended.

  When the guy line 2 is added, as shown in FIG. 2, the guy line 2 is hung by the crane (a crane different from the crane for which the intermediate boom 132 is going to be longer) via the hanging tool 3. The hanging tool 3 is the hanging tool 3 according to the present invention. First, the guide line 2 as a work to be suspended by the suspender 3 will be further described.

  As shown in FIGS. 3 and 4, the guy line 2 includes a main body rod 21 and a rod connecting part 22.

  The main body rod 21 is a rod-shaped member whose longitudinal length is longer than the longitudinal length of the rod connecting portion 22. The length of the main body rod 21 in the longitudinal direction is 3 m to 15 m in the first embodiment, but is not particularly limited.

  The main body rod 21 has an intermediate portion 23 whose cross section perpendicular to the longitudinal direction has a rectangular shape, and has enlarged portions 24 larger than the intermediate portion 23 at both ends in the longitudinal direction.

  The intermediate portion 23 is a portion occupying approximately 80% of the length of the main body rod 21 in the longitudinal direction, and has a linear shape having a uniform cross section.

  The enlarged portion 24 has an arc shape in a side view, has a uniform length (thickness) in the width direction, and has the same thickness as the intermediate portion 23. In addition, the direction of the guy line 2 will be described as the direction in a state where the guy line 2 is suspended by the suspender 3. The enlarged portion 24 has a pin insertion hole 241 penetrating in the width direction.

  The rod connecting part 22 has a pair of plates 25. The plate 25 has an oval shape in side view. The length of the rod connecting portion 22 (plate 25) in the longitudinal direction is shorter than the length of the main body rod 21 in the longitudinal direction, and is 50 cm to 2 m in the first embodiment, but is not particularly limited. The width of the rod connecting portion 22 (distance between the outer surfaces of the pair of plates 25) is uniform in a range of 30 mm to 150 mm, but is not particularly limited. The pair of plates 25 have pin insertion holes 251 penetrating in the width direction at both ends in the longitudinal direction.

  In addition, the pair of plates 25 has a bolt insertion hole 252 (see FIG. 15) penetrating in the width direction at a central portion in the longitudinal direction. A spacer 26 is provided at a portion where the bolt insertion hole 252 is provided between the pair of plates 25. The spacer 26 is interposed between the pair of plates 25. A bolt insertion hole is formed in the center of the spacer 26, and a bolt 261 is inserted into the bolt insertion hole and the bolt insertion hole 252 of the pair of plates 25, and the nut 262 is fastened. Thus, the pair of plates 25 face each other with a predetermined interval.

  As shown in FIGS. 3 and 4, the pin 27 with the flange is inserted in a state where the pin insertion hole 241 at one end of the main body rod 21 and the pin insertion hole 251 at one end of the rod connecting portion 22 are in communication. The retaining pin 271 is inserted into the retaining pin insertion hole of the pin 27, and the retaining of the pin 27 from the main body rod 21 and the rod connecting part 22 is performed.

  As shown in FIG. 2, the hanging device 3 of the present invention suspends a work in which the base end of a short member having a free end is connected to one end in the longitudinal direction of a long member. is there. In the first embodiment, the guy line 2 corresponds to a work, the main body rod 21 corresponds to a long member, and the rod connecting portion 22 corresponds to a short member.

  As shown in FIG. 5, the hanging device 3 according to the first embodiment includes a main body 30, a support 4, and a movement restricting unit 6.

  The main body 30 has a predetermined length in the lateral direction as shown in FIGS. In the following description, the orientation of the suspending tool 3 and its configuration (the main body 30, the support 4, and the movement restricting section 6) will be described as the orientation when the guy line 2 is suspended. The length of the main body 30 in the longitudinal direction is 2 m to 10 m in the first embodiment, but is not particularly limited.

  The main body 30 is a hollow pipe having a circular cross section, but is not particularly limited to a circular cross section, and is not particularly limited to a hollow pipe.

  The main body 30 is provided with a suspended portion 31. The suspended portions 31 are provided upward at a plurality of different positions in the longitudinal direction (lateral direction) of the main body 30. In the first embodiment, the suspended portions 31 are provided at six locations in the longitudinal direction of the main body 30, respectively. An insertion hole 311 penetrating in the width direction is formed in the suspended portion 31, and a hook, a sling, or the like of another crane is inserted and lifted.

  The main body 30 is provided with a support mounting portion 32. The support mounting portion 32 is provided downward at a plurality of different positions in the longitudinal direction of the main body 30. In the first embodiment, at each of the five positions in the longitudinal direction of the main body 30, a support mounting portion 32 made of a pair of plate-shaped members facing each other at intervals in the longitudinal direction of the main body 30 is provided. The support portion attaching portion 32 is provided below the portion where the suspended portion 31 is provided, but the provided portion is not particularly limited. Two pin insertion holes 321 penetrating in the longitudinal direction are formed in the supporting portion attaching portion 32 so as to be aligned in the width direction of the main body portion 30.

  Below the portion corresponding to the suspended portion 31 located at one end of the main body 30, a movement restricting portion attaching portion 313 is provided instead of the supporting portion attaching portion 32. The movement restricting portion attaching portion 313 is the same as the upside down portion of the suspended portion 31 and has an insertion hole 312 penetrating in the width direction.

  As shown in FIGS. 8 and 9, the support portion 4 includes a pair of a first arm 40 and a second arm 50 that are provided downward on the main body 30.

  As shown in FIG. 9, the first arm 40 is configured by a plate-shaped member, but is not particularly limited. The first arm 40 is suspended from the main body 30 so as to be rotatable in a direction in which a lower end of the first arm is separated from and brought into contact with the second arm 50. In the first embodiment, as shown in FIG. 8, the upper end of the first arm 40 is inserted between a pair of plates of one of the support mounting portions 32, and the mounting formed on the upper end of the first arm 40 is performed. With the pin insertion hole 42 and one of the pin insertion holes 321 communicating with each other, the flanged pin 43 is inserted. The retaining pin 431 is inserted into the retaining pin insertion hole 432 of the pin 43, and the removal of the pin 43 from the support mounting portion 32 and the first arm 40 is performed. As a result, the first arm 40 is rotatably suspended and supported by the support mounting portion 32 (the main body 30).

  As shown in FIG. 9, the first arm 40 has a long member mounting portion 41 on a first side surface 401 facing the second arm 50. The long member mounting portion 41 protrudes toward the second arm 50, and the main body rod 21 is mounted on the upper surface thereof, and receives the load of the main body rod 21.

  Further, the lower end of the long member mounting portion 41 has a slope 412 that is located upward as it goes toward the second arm 50 side.

  The second arm 50 is configured by a plate-shaped member, but is not particularly limited. In the first embodiment, the second arm 50 is supported by being suspended from the main body 30 so that the lower end can rotate in a direction in which the lower end of the second arm 50 comes into contact with the first arm 40. As shown in FIG. 8, the upper end of the second arm 50 is inserted between a pair of plates of any of the support mounting portions 32, and a mounting pin insertion hole (not shown) formed in the upper end of the second arm 50 is provided. ) And the other pin insertion hole 321 are communicated with each other, as shown in FIG. 9, the flanged pin 52 is inserted. The retaining pin 521 is inserted into the retaining pin insertion hole of the pin 52, and the retaining of the pin 52 from the support mounting portion 32 and the second arm 50 is performed. As a result, the second arm 50 is rotatably suspended from the support mounting portion 32 (the main body 30).

  In the first embodiment, the second arm 50 is rotatable with respect to the support 4, but the second arm 50 may not be rotatable with respect to the support 4.

  In addition, a portion of the lower end of the second arm 50 on the first arm 40 side has a slope 502 that is located upward as it goes toward the first arm 40 side.

  FIG. 9 shows an open state in which the first arm 40 is suspended from the main body 30. In this open state, between the protruding end portion 411 of the long member mounting portion 41 and the second side surface 501 of the second arm 50 facing the first arm 40, from the protruding end portion 411 to the second side surface 501. The first arm 40 and the second arm 40 are formed such that the width W of the main body rod 21 is longer than the length in the short direction of the main body rod 21 (the length of the middle part 23 shown in FIG. 12). 50 is provided on the support 4. The long member insertion gap 33 is formed between the first side surface 40 (including the side surface of the protruding end portion 411) located above the long member mounting portion 41 of the first arm 40 and the second side surface 501 of the second arm 50. Is the gap with the smallest interval.

  The closed state (which is closer to the second arm 50 than the open state of the first arm 40 such that the width W between the protruding end 411 and the second side surface 501 is shorter than the length of the main body rod 21 in the transverse direction) (See FIG. 14) is provided.

  In the first embodiment, a protruding piece 44 having a pin insertion hole 441 that protrudes from the first side surface 401 of the first arm 40 and forms the closed state holding unit 34 is provided. Further, a projecting piece 53 having a pin insertion hole 531 is formed on the second side surface 501 of the second arm 50 so as to constitute the closed state holding means 34.

  The movement restricting portion 6 is provided on the main body 30 as shown in FIGS. 10 and 11, and restricts the movement of the rod connecting portion 22 with respect to the main body rod 21. In the first embodiment, since the movement of the rod connecting part 22 with respect to the main body rod 21 is rotation, the movement restricting part 6 is a rotation restricting part that restricts the rotation of the rod connecting part 22 with respect to the main body rod 21.

  In the first embodiment, the movement restricting portion 6 includes a pair of outer plates 60 and a middle plate 61 sandwiched between the outer plates 60. The outer plate 60 and the middle plate 61 are fixed by welding.

  A connecting portion 62 for connecting the outer plates 60 is provided between the pair of outer plates 60. The outer plate 60 and the connecting portion 62 are fixed by welding. The connecting portion 62 has a function as a spacer and a reinforcing material.

  The movement restricting section 6 has a mounting section to the main body section 30. As an attachment portion, a pin insertion hole 63 for fixing to the suspended portion 31 and a pin insertion hole 65 for fixing to the support portion attachment portion 32 are formed in each outer plate 60.

  As shown in FIG. 2, the hanging portion 31 is inserted into the pair of outer plates 60, and the pin insertion hole 63 is communicated with the insertion hole 311 of the hanging portion 31. The pin 64 is inserted. The retaining pin 641 is inserted into the retaining pin insertion hole of the mounting pin 64, and the movement restricting portion 6 from the suspended portion 31 is prevented from being removed.

  Similarly, the movement restricting portion mounting portion 313 (see FIG. 6) is inserted into the pair of outer plates 60, and the pin insertion hole 65 is communicated with the insertion hole 312 of the movement restricting portion mounting portion 313, and the flange is formed. The attached mounting pin 66 is inserted. The retaining pin 661 is inserted into the retaining pin insertion hole of the mounting pin 66, and the movement restricting portion 6 is prevented from being removed from the movement restricting portion mounting portion 313.

  The movement restricting portion 6 has fixing pin insertion holes 671 and 672 through which the fixing pins 68 (see FIG. 2) are inserted in a state of communicating with the pin insertion holes 251 of the rod connecting portion 22. As shown in FIGS. 10 and 11, the fixing pin insertion hole 671 is formed in the outer plate 60. The fixing pin insertion hole 672 is formed in the middle plate 61.

  Thus, the hanging device 3 of the first embodiment shown in FIG. 5 is configured. Next, a procedure for suspending the guy line 2 by the suspender 3 of the first embodiment will be described.

  The guide line 2 is placed upright as shown in FIG. 4, and the hanging device 3 is hung by a crane with the longitudinal direction of the main body portion 30 being set to be horizontal, and is positioned above the guide line 2 as shown in FIG. Note that the term “lateral” does not have to be strictly horizontal, and may be, for example, about 10 ° to 20 ° from the strict horizontal, and the allowable angle is not limited.

  When the suspender 3 is lowered as shown in FIG. 13, the guide line 2 passes through the elongated member insertion gap 33 of the suspender 3, and the guide line 2 is positioned above the elongate member mounting portion 41. At this time, the guy line 2 can be inserted into the elongated member insertion gap 33 or pulled out from the elongated member insertion gap 33 without the operator having to push and spread the gap between the first arm 40 and the second arm 50 by hand. And workability is excellent.

  In addition, the guide line 2 may not be inserted well through the elongated member insertion gap 33, and the guide line 2 may be slightly displaced and come into contact with the slope 412 at the lower end of the elongated member mounting portion 41. At this time, the guy line 2 receives the force in the direction of the second arm 50 from the slope 412 and moves toward the second arm 50, and the first arm 40 applies the force in the direction in which the slope 412 separates from the second arm 50 from the guy line 2. As a result, the guide line 2 moves away from the second arm 50, so that the guy line 2 can be inserted through the elongated member insertion gap 33.

  Similarly, when the guy line 2 is slightly displaced and comes into contact with the slope 502 at the lower end of the second arm 50, the guy line 2 receives a force toward the first arm 40 from the slope 502 and moves toward the first arm 40, and 2 can be inserted through the long member insertion gap 33.

  Thereafter, as shown in FIG. 14, the operator turns the first arm 40 closer to the second arm 50 to close it, and the closed state holding means 34 holds the closed state. That is, the pin insertion hole 441 (see FIG. 13) formed in the projecting piece 44 of the first arm 40 communicates with the pin insertion hole 531 (see FIG. 13) formed in the projecting piece 53 of the second arm 50. In this state, the pin 341 is inserted. The pin 341 has a retaining pin insertion hole (not shown) formed therein. The retaining pin 342 is inserted into the retaining pin insertion hole to prevent the pin 341 from being removed from the projecting pieces 44 and 53. Done.

  Thus, the first arm 40 and the second arm 50 are separated from each other and the main body rod 21 is prevented from falling off. That is, the closed state holding means 34 constitutes a falling-off preventing means for preventing the first arm 40 and the second arm 50 from being separated from each other and preventing the guy line 2 from falling off.

  In the first embodiment, two support portions 4 are provided in the longitudinal direction of the main body 30. However, three or more support portions 4 may be provided, and a predetermined length may be provided in the longitudinal direction. May be provided with one supporting portion 4 having a thickness.

  Next, as shown in FIG. 2, the distal end of the rod connecting portion 22 is erected, and as shown in FIG. 15, a pair of outer plates of the movement restricting portion 6 are placed in a pair of plates 25 of the rod connecting portion 22. Insert 60. At this time, the rattling is prevented by inserting the pair of outer plates 60 of the movement restricting portion 6 into the pair of plates 25 of the rod connecting portion 22 without any gap, but there may be a gap.

  Then, the fixing pin 68 is inserted while the pin insertion hole 251 of the rod connecting portion 22 and the fixing pin insertion hole 671 of the movement restricting portion 6 are in communication with each other. As shown in FIGS. 10 and 11, the fixing pin insertion hole 671 has a shape in which arcs having different diameters of curvature with large diameters in the upper part and small diameters in the lower part are combined. For this reason, when the fixing pin 68 is inserted into the fixing pin insertion hole 671, the rod connecting part 22 and the main body rod 21 are slightly lifted and the fixing pin 68 is inserted into the upper part having a large diameter, thereby facilitating the insertion. . After that, when the rod connecting portion 22 and the main body rod 21 are lowered, the fixing pin 68 is positioned at a lower portion where the diameter of the fixing pin insertion hole 671 is small, the positioning is performed, and the movement is regulated and stabilized.

  As shown in FIG. 15, the retaining pin 681 is inserted into the retaining pin insertion hole of the fixing pin 68, and the retaining pin 68 is prevented from being removed.

  The connection between the intermediate boom 132 and the guy line 2 will be further described. With the support portion 4 of the hanging device 3 supporting the guy line 2, the hook 3 or a sling of another crane is raised to lift the hanging device 3 as shown in FIG. 16.

  In connection for extending the intermediate boom 132, first, the boom 13 of the crawler crane 1 is placed on the ground by falling down, and the upper boom 133 or the intermediate boom 132 is moved to the intermediate boom 132 or Release from the lower boom 131. In the first embodiment, the intermediate boom 132 is placed on the ground, and the guy line 2 corresponding to the intermediate boom 132 is placed on the upper end surface. The length of the intermediate boom 132 and the length of the guy line 2 are the same in the first embodiment, but may be different and are not particularly limited. The additional intermediate boom 132 is connected to the intermediate boom 132 or the lower boom 131 placed on the ground, and the guy line 2 corresponding to the additional intermediate boom 132 is placed as shown in FIG. Thereafter, the fixing pin 68 of the rod connecting portion 22 is removed, and the pin 27 is inserted in a state where the pin inserting hole 241 of the main body rod 21 of the guy line 2 to be connected and the pin inserting hole 251 of the rod connecting portion 22 are communicated. At the same time, the retaining pin 271 is inserted into the retaining pin insertion hole of the pin 27 and connected.

  In addition, in order to finish suspending the guy line 2 by the suspender 3 and to remove the suspender 3 from the guy line 2, the operator releases the holding of the closed state by the closed state holding means 34 in the closed state shown in FIG. I just need. That is, the retaining pin 342 is removed from the pin 341, and the pin 341 is removed from the pin insertion hole 441 formed in the projecting piece 44 and the pin insertion hole 531 formed in the projecting piece 53. When the holding of the closed state by the closed state holding means 34 is released, the first arm 40 is turned to the open state, and the elongated member insertion gap 33 is formed. The hanging tool 3 is lifted by the crane, and the guy line 2 is inserted into the elongated member insertion gap 33, and the removal of the hanging tool 3 from the guy line 2 is completed.

  Even when the hanging tool 3 is removed from the guide line 2, the guide line 2 is inserted through the elongated member insertion gap 33 without the operator manually pushing and widening the space between the first arm 40 and the second arm 50. Or it can be removed from the long member insertion gap 33, which is excellent in workability.

  Next, a hanging device 3 according to a second embodiment will be described with reference to FIG. Note that the hanging device 3 according to the second embodiment is substantially the same as the hanging device 3 according to the first embodiment. For this reason, the same description as in the first embodiment is denoted by the same reference numeral, and the description is omitted.

  FIG. 18 shows a front view of the suspender 3 of the second embodiment in which the guy line 2 as a work is suspended.

  In the second embodiment, the second arm 50 has a long member mounting portion 54 on the second side surface 501 protruding toward the first arm 40 and on which the main body rod 21 is mounted. And different.

  Further, the lower end of the long member mounting portion 54 has a slope 541 that is located upward as it goes to the first arm 40 side.

  18, the two-dot chain line indicates the first arm 40 and the second arm 50 in the open state, and the solid line indicates the first arm 40 and the second arm 50 in the closed state. In the open state shown by the two-dot chain line, the main body rod 21 is located between the protruding end of the long member mounting portion 41 of the first arm 40 and the protruding end of the long member mounting portion 54 of the second arm 50. The first arm 40 and the second arm 50 are provided on the support portion 4 such that a long member insertion gap longer than the length in the short direction is formed. The long member insertion gap is formed between the first side surface 40 (including the end surface of the long member mounting portion 41) located above the long member mounting portion 41 of the first arm 40 and the second arm 50. The gap between the second side surface 501 (including the end surface of the long member mounting portion 54) located above the member mounting portion 54 is the narrowest.

  Also in the second embodiment, similarly to the first embodiment, with the main body 30 of the guy line 2 in a state where the longitudinal direction is horizontal (see FIG. 4), the hanging tool 3 is hung by a crane and positioned above the guy line 2. Let it.

  The hanging member 3 is lowered, and the guy line 2 passes through the long member insertion gap between the protruding end of the long member mounting portion 41 and the protruding end of the long member mounting portion 54 indicated by a two-dot chain line. The guide line 2 is located above the long member mounting portion 41. At this time, the guy line 2 can be inserted into the elongated member insertion gap 33 or pulled out from the elongated member insertion gap 33 without the operator having to push and spread the gap between the first arm 40 and the second arm 50 by hand. And workability is excellent.

  When the guide line 2 does not pass through the long member insertion gap 33 well and the guide line 2 is slightly shifted and comes into contact with the slope 541 at the lower end of the long member mounting portion 54, the guide line 2 faces the first arm 40 from the slope 541. The second arm 50 moves toward the second arm 50 under the force of, and the second arm 50 moves toward the direction away from the first arm 40 by receiving a force in which the inclination 541 is away from the first arm 40 from the guy line 2, The guy line 2 can pass through the long member insertion gap 33.

  Thereafter, as shown by the solid line, the operator turns the first arm 40 and the second arm 50 closer to each other to close them, and the closed state holding means 34 holds the closed state.

  In the second embodiment, the second arm 50 also has the long member mounting portion 54, so that the long member can be easily mounted.

  Even when the hanging tool 3 is removed from the guide line 2, the guide line 2 is inserted through the elongated member insertion gap 33 without the operator manually pushing and widening the space between the first arm 40 and the second arm 50. Or it can be removed from the long member insertion gap 33, which is excellent in workability.

  Next, a hanging device 3 according to a third embodiment will be described with reference to FIGS. The hanging device 3 according to the third embodiment is substantially the same as the hanging device 3 according to the first embodiment. For this reason, the same description as in the first embodiment is denoted by the same reference numeral, and the description is omitted.

  FIG. 19 is a side view in which a part of a portion where the rod connecting portion 22 (short member) of the hanging tool 3 of the third embodiment in which the guy line 2 as a work is suspended is partially omitted is omitted.

  The movement restricting section 6 has a third arm 70 and a fourth arm 80 provided to form a pair on the main body 30 downward. The third arm 70 is directly or indirectly suspended from the main body 30 so as to be rotatable in a direction in which a lower end portion is separated from and in contact with the fourth arm 80, and faces the fourth arm 80. The third embodiment is different from the first embodiment in that the third side surface 701 has a short member mounting portion 71 protruding toward the fourth arm 80 and on which the rod connecting portion 22 is mounted.

  The main body 30 is provided with a movement restricting portion attaching portion 35. The movement restricting portion mounting portion 35 is provided downward at one end in the longitudinal direction of the main body 30. A pin insertion hole 351 penetrating in the width direction is formed in the movement restricting portion mounting portion 35.

  The third arm 70 is suspended and supported by the movement restricting portion mounting portion 35 (the main body 30) so that the lower end portion can rotate in a direction in which the lower end portion is separated from and in contact with the fourth arm 80. In the third embodiment, the flanged pin 36 is inserted while the mounting pin insertion hole 72 formed at the upper end of the third arm 70 and one of the pin insertion holes 351 are in communication with each other. The retaining pin is inserted into the retaining pin insertion hole of the pin 36, and the removal of the pin 36 from the movement restricting portion mounting portion 35 and the third arm 70 is performed. As a result, the third arm 70 is rotatably suspended and supported by the movement restricting portion mounting portion 35.

  The third arm 70 has a short member mounting portion 71 on a side surface facing the fourth arm 80. The short member mounting portion 71 protrudes toward the fourth arm 80, and the spacer 26 of the rod connecting portion 22 is mounted on the upper surface thereof.

  The lower surface of the short member mounting portion 71 has a slope 711 that is located upward as it goes to the fourth arm 80 side. Further, the upper surface of the short member mounting portion 71 has a slope 712 that is located lower as it goes toward the fourth arm 80 side.

  The fourth arm 80 is suspended and supported by the movement restricting portion attaching portion 35 so that the lower end portion can rotate in a direction in which the lower end portion comes into contact with the third arm 70. In the third embodiment, the pin 36 with the flange is inserted while the mounting pin insertion hole 81 formed at the upper end of the fourth arm 80 and one of the pin insertion holes 351 are in communication with each other.

  The two-dot chain line in FIG. 19 indicates an open state in which the third arm 70 and the fourth arm 80 are suspended from the movement restricting portion mounting portion 35. In this open state, a position between the protruding end of the short member mounting portion 71 and the fourth side surface 801 of the fourth arm 80 facing the third arm 70 is defined by the distance from the protruding end of the short member mounting portion 71 to the fourth side. The third arm 70 and the fourth arm 80 are provided on the movement restricting portion mounting portion 35 such that a short member insertion gap in which the width W2 to the four side surfaces 801 is longer than the length of the short member in the width direction of the spacer 26 is formed. Have been.

  Further, the closed state holding means 37 for holding the third arm 70 close to the fourth arm 80 (see the solid line in FIG. 19) so that the width W2 is shorter than the length of the main body rod 21 in the short direction. Provided.

  In the third embodiment, a projecting piece 73 having a pin insertion hole (not shown), which constitutes the closed state holding means 37, is provided on the third side surface 701 of the third arm 70 so as to protrude. Further, a protruding piece 82 having a pin insertion hole (not shown), which constitutes the closed state holding means 37, protrudes from the fourth side surface 801 of the fourth arm 80.

  The operator turns the third arm 70 closer to the fourth arm 80 to close it, and holds the closed state by the closed state holding means 37. That is, the pin 371 is inserted in a state where the pin insertion hole formed in the projecting piece 73 of the third arm 70 and the pin insertion hole formed in the projecting piece 82 of the fourth arm 80 communicate with each other. A retaining pin insertion hole (not shown) is formed in the pin 371, and the retaining pin 372 is inserted into the retaining pin insertion hole to prevent the pin 371 from being removed from the protruding pieces 73 and 82. Done.

  This prevents the third member 70 and the fourth arm 80 from being separated from each other and the short member from falling off.

  A procedure for regulating the movement of the short member by the movement regulating unit 6 of the third embodiment will be described.

  In a state where the longitudinal direction of the main body 30 of the guy line 2 is horizontal (see FIG. 4), the hanging tool 3 is hung by a crane and positioned above the spacer 26.

  When the hanging member 3 is lowered, the spacer 26 is inserted through the short member insertion gap of the movement restricting portion 6, and the spacer 26 is positioned above the short member mounting portion 71. At this time, the spacer 26 may be inserted into the short member insertion gap or may be removed from the long member insertion gap without the operator pushing and expanding the third arm 70 and the fourth arm 80 by hand. And workability is excellent.

  Further, the spacer 26 may not be inserted well through the short member insertion gap, and the spacer 26 may be slightly displaced and come into contact with the slope 711 at the lower end of the short member mounting portion 71. At this time, the spacer 26 receives the force in the direction of the fourth arm 80 from the inclination 711 and moves toward the fourth arm 80, and the third arm 70 applies the force in the direction in which the inclination 711 separates from the fourth arm 80 from the spacer 26. Then, the spacer 26 is moved away from the fourth arm 80 so that the spacer 26 can be inserted through the short member insertion gap.

  Further, the long member (main body rod 21) can be hung by the support portion 4 as in the first embodiment (see FIGS. 12 to 14).

  Thereafter, the operator rotates the third arm 70 toward the fourth arm 80 to close the third arm 70, and holds the closed state by the closed state holding means 37. That is, the pin 371 is inserted in a state where the pin insertion hole formed in the projecting piece 73 of the third arm 70 and the pin insertion hole formed in the projecting piece 82 of the fourth arm 80 communicate with each other. A retaining pin insertion hole is formed in the pin 371, and the retaining pin 372 is inserted into the retaining pin insertion hole to prevent the pin 371 from being removed from the protruding pieces 73 and 82.

  This prevents the third arm 70 and the fourth arm 80 from separating from each other and the spacer 26 from falling off.

  In the first embodiment, the distal end portion of the rod connecting portion 22 stands up as shown in FIGS. 16 and 17, whereas in the third embodiment, the rod connecting portion 22 has a main body as shown in FIG. Like the rod 21, it becomes horizontal, and the main body rod 21 and the rod connecting portion 22 become linear.

  Thereafter, the hook 3 and the sling of another crane are lifted in a state where the support portion 4 of the hanging tool 3 supports the guy line 2, thereby lifting the hanging tool 3.

  In connection for extending the intermediate boom 132, the additional intermediate boom 132 is connected to the intermediate boom 132 or the lower boom 131 placed on the ground, and as shown in FIG. The guy line 2 lifted by 3 is placed. At this time, the pin insertion hole 241 of the main body rod 21 of the guy line 2 placed on the intermediate boom 132 or the lower boom 131 previously placed on the ground, and the rod connecting portion 22 lifted by the lifting tool 3 With the pin 27 in communication with the pin insertion hole 251, the pin 27 is inserted, and the retaining pin 271 is inserted into the retaining pin insertion hole of the pin 27 for connection.

  In addition, in order to finish hanging the guy line 2 by the hanging tool 3 and to remove the hanging tool 3 from the guy line 2, first, the worker releases the holding of the closed state by the closed state holding means 37. That is, the retaining pin 372 is removed from the pin 371, and the pin 371 is removed from the pin insertion hole formed in the projecting piece 73 and the pin insertion hole formed in the projecting piece 82. When the holding of the closed state by the closed state holding means 37 is released, the third arm 70 is turned to the open state, and a short member insertion gap is formed. The lifting tool 3 is lifted by the crane, the spacer 26 is inserted into the short member insertion gap, and the removal of the movement restricting portion 6 from the spacer 26 is completed.

  Even when the movement restricting portion 6 is removed from the spacer 26, the spacer 26 can be inserted into the short member insertion gap without the operator pushing and expanding the space between the third arm 70 and the fourth arm 80 by hand. It can be pulled out from the long member insertion gap and is excellent in workability.

  In order to remove the hanging member 3 from the long member (main body rod 21), the operator releases the closed state held by the closed state holding means 34, as in the first embodiment. As a result, the first arm 40 is rotated and opened to form the elongated member insertion gap 33, and the main body rod 21 can be inserted through the elongated member insertion gap 33.

  The hanger 3 can also be used when assembling or disassembling the boom 13.

  Further, the closed state holding unit 34 is not limited to the above-described embodiment, and may be, for example, a rubber band that bundles the first arm 40 and the second arm 50.

  In the above-described embodiments (first to third embodiments), the work in which the movement of the short member (rod connecting portion 22) with respect to the long member (main body rod 21) is rotation in one direction (one degree of freedom). However, the work is not limited to the work in which the movement of the short member with respect to the long member is rotation in one direction.

  For example, a connection structure such as a so-called universal joint may be adopted, and the movement of the short member with respect to the long member may be rotation in two directions (two degrees of freedom).

  Further, for example, the pin insertion hole 241 of the main body rod 21 (elongated member) is formed to be an elongated hole, and is inserted through the pin insertion hole 241 and the pin insertion hole 251 of the rod connecting portion 22 (short member). The pin 27 may be rotatable linearly in the pin insertion hole 241 in a rotatable state.

  Further, for example, the pin insertion hole 241 of the main body rod 21 (elongated member) is formed to be an elongated hole, and the pin insertion hole 251 of the rod connecting portion 22 (short member) is formed in a rectangular shape. Then, the pin 27 may be formed in a rectangular shape in cross section that can be just fitted into the pin insertion hole 251, and may be linearly movable and inserted into the pin insertion hole 241 in a non-rotatable state. In this case, the movement of the short member with respect to the long member is not rotation but linear movement, and can be adopted in the third embodiment of the above-described embodiments. As described above, the movement of the short member with respect to the long member in the work is not limited at all.

DESCRIPTION OF SYMBOLS 1 Crawler crane 2 Guy line 21 Main body rod 22 Rod connection part 3 Hanging tool 30 Main body part 33 Long member insertion gap 4 Support part 40 First arm 41 Long member placement part 50 Second arm 6 Movement regulation part 70 Third arm 71 Short member mounting part 80 Fourth arm

Claims (3)

A hanging tool for suspending a workpiece formed by connecting a base end of a short member having a free end to a distal end to one end in a longitudinal direction of a long member,
A main body having a predetermined length in the lateral direction, supporting portions provided at a plurality of locations in the longitudinal direction of the main body, and a movement restricting portion provided at one longitudinal end of the main body,
Each of the support portions is provided so as to form a pair in a downward direction in the main body portion, and a short direction of the long member whose longitudinal direction is oriented in the same direction as the direction of the predetermined length of the main body portion. A first arm positioned on one side of the long member to restrict movement of the long member to one side, and the long member positioned on the other side in a short direction of the long member Has a second arm that regulates the movement to the other side,
The movement restricting portion regulates movement of the short member with respect to the long member,
The first arm is suspended from the main body so as to be rotatable in a direction in which a lower end of the first arm is separated from and brought into contact with the second arm, and the first arm has a first side face facing the second arm. A long member mounting portion on which the long member is mounted so as to protrude toward the two arms;
In the open state in which the first arm is hung from the main body, the projecting portion is provided between a projecting end of the long member mounting portion and a second side surface of the second arm facing the first arm. The first arm and the second arm are provided on the support portion such that a long member insertion gap in which a width from an end to the second side surface is longer than a length of the long member in a short direction is formed. ,
The lower end of the elongate member mounting portion has an inclination that is located upward as it goes to the second arm side, and the lower end of the second arm on the first arm side moves toward the first arm side. It has a slope that is located upward as you go,
The first arm is closer to the second arm than the open state so that the width between the protruding end and the second side surface is shorter than the length of the long member in the short direction. A closed state holding means for holding a state,
The closed state holding means includes a pin insertion hole formed in a protruding piece protruding toward the second side surface from a portion of the first arm of the first arm above the elongate member mounting portion , The second arm includes a pin insertion hole formed in a projecting piece protruding toward the first side from a portion of the second side face facing the projecting piece , and a pin inserted into both of the pin inserting holes. The pin is inserted into both of the pin insertion holes to maintain the closed state, and the pin is removed from both of the pin insertion holes to release the closed state and enter the open state. A hanging tool characterized by being a thing.   2. The hanging device according to claim 1, wherein the second arm is suspended from the main body so as to be rotatable in a direction in which a lower end of the second arm is separated from and brought into contact with the first arm.   The hanging device according to claim 2, wherein the second arm has a long member mounting portion on the second side surface, the long member mounting portion protruding toward the first arm and mounting the long member.

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