JP2018167972A - Wiring method and crane - Google Patents

Abstract

To provide a wiring method and a crane that can prevent damage to a rope moving along a rising/lowering member, while improving workability.SOLUTION: A wiring method includes the steps of: placing a reeving rope 33 over pulleys 61, 62; connecting the reeving rope 33 and a hoist rope 32 above a rising/lowering member 5; and pulling the reeving rope 33 backward and placing the hoist rope 32 over the pulleys 61, 62. In the step of placing the rope over the pulleys, the hoist rope 32 is moved while the hoist rope is supported by a guide member 100 so as to be permitted to move in forward and backward directions in a position where it separates upward from an upper surface of the rising/lowering member 5, the guide member being fixed to a connection member 10 positioned so as to extend downward in a forward oblique direction toward a leading end of the rising/lowering member 5 from the leading end of a support member 6 as a result that the support member 6 is pulled upward behind the rising/lowering member 5.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a rope wiring method for a crane and a crane.

  2. Description of the Related Art Conventionally, a crane is known that includes an airframe, a hoisting member that can be raised and lowered with respect to the airframe, a support member that supports the hoisting member, and a connecting member that connects the tip of the hoisting member and the tip of the support member. In such a crane, the crane is assembled in a workable state at a work place or the like.

  For example, when a pulley connected to a hanging tool for transporting a load and over which a winding rope for raising and lowering it is provided at the tip of the hoisting member, the work of winding the winding rope around the pulley Is done. Here, the winding rope is for raising and lowering the object to be conveyed via the hanging tool, and its diameter and weight are relatively large. For this reason, when the operator manually hangs the winding rope around the pulley, the labor becomes very large.

  On the other hand, as disclosed in Patent Document 1, a winding rope is stretched around a pulley using a leaving rope having a diameter and weight smaller than those of the winding rope.

  Specifically, Patent Document 1 includes a turning body mounted on a traveling body, a boom (lifting member) connected to the turning body so as to be raised and lowered, a pulley provided at the tip of the boom, and a hook. In the crane, the reeving rope is routed upward from the lower part of the boom to the pulley, and the reeving rope and the winding rope are connected to the upper part of the boom. Then, the winding rope is wound around the pulley by winding the leaving rope.

  In this method, since the operator only has to hang a reeving rope that has a small diameter and weight and is relatively easy to handle, it can easily hang the winding rope around the pulley.

JP 2011-6199 A

  However, in the above-described method disclosed in Patent Document 1, when winding the reeving rope, the winding rope that moves along with the winding may collide with the upper part of the boom (the hoisting member), the protrusion, or the like and be damaged. There is.

  This invention is made in view of the said point, The objective is to provide the wiring method and crane which can suppress damage to the rope which moves along a raising / lowering member, improving workability | operativity. is there.

  In order to solve the above-mentioned problem, the present inventors provide a connecting member provided on a crane, the connecting member connecting the tip of the hoisting member and the tip of the supporting member supporting the hoisting member. Focused on the fact that it is placed above.

  The present invention utilizes this connecting member for rope wiring, and includes an airframe, a hoisting member attached to the airframe so as to be raised and lowered, and a hoisting member attached to the airframe so as to be raised and lowered. A connecting member that connects the distal end of the undulating member and the distal end of the supporting member, a suspension provided at the distal end of the undulating member, and a suspension provided at the distal end of the undulating member. A wiring method for passing the winding rope around the pulley of a crane including a pulley on which a winding rope for raising and lowering is suspended, wherein the hoisting member extends forward from the fuselage, A reeving rope routing step for routing a reving rope for pulling from above the hoisting member to above the hoisting member while passing over the pulley; A rope connecting step that is performed after the bing rope routing step and connects the reeving rope and the winding rope above the hoisting member, and is performed after the rope connecting step, and the hoisting of the reeving rope is performed. A rope spanning step of pulling a portion disposed below the member rearward and moving the winding rope forward to span the pulley, wherein in the rope spanning step, the support member is the undulation In the guide member fixed to the connecting member, which is configured to extend obliquely forward and downward from the tip of the support member toward the tip of the undulation member as it is raised with respect to the airframe behind the member, In a state where the winding rope is supported in a state in which movement in the front-rear direction is allowed at a position spaced upward from the upper surface of the hoisting member, the winding rope Moving forward, it provides a wiring method.

  According to this method, the winding rope can be easily hung on the pulley provided at the tip of the hoisting member while preventing the hoisting member or the projection attached to the hoisting member from coming into contact with the hoisting rope. Workability can be improved while preventing damage.

  Specifically, according to this method, the reeving rope is hung on the pulley provided at the tip of the hoisting member, and the winding rope is hung on the pulley by winding the reving rope, so that the handling is relatively The winding rope can be easily hung on the pulley as compared with the case where the operator manually hung the difficult winding rope on the pulley, and the workability can be improved. Further, the winding rope is drawn into the pulley side in a state where the guide member fixed to the connecting member supports the winding rope while allowing the winding rope to move in the front-rear direction at a position spaced apart from the upper surface of the hoisting member. Therefore, it is possible to suppress the contact between the winding rope and the upper part of the hoisting member or the projection provided on the upper part.

  Here, as a configuration for separating the winding rope upward from the upper surface of the hoisting member, a configuration in which the guide member is fixed to the hoisting member may be considered, but in this case, the distance between the winding rope and the upper surface of the hoisting member is increased. Therefore, it is necessary to increase the vertical dimension of the guide member. On the other hand, in this method, a connecting member that extends diagonally forward and downward from the front end of the support member toward the front end of the undulating member is used, and the guide is guided to the connecting member. The member is fixed. Therefore, it is possible to increase the distance between the guide member and the upper surface of the hoisting member without increasing the vertical dimension of the guide member, thereby suppressing contact between the winding rope and the upper portion of the hoisting member.

  In the method, the connecting member includes a plurality of unit connecting portions and a relay member that removably connects the unit connecting portions, and in the rope spanning step, the connecting portions of the unit connecting portions are connected to each other. It is preferable that the winding rope is supported by the guide member fixed via the relay member.

  If it does in this way, a guide member can be fixed to a connection member using a relay member for connecting unit connection parts, and a guide member can be easily attached to a connection member without providing a member for this fixation separately. Can be fixed to.

  In the method, the guide member is detachable from the connecting member, and is implemented before the rope spanning step, and is performed after the step of fixing the guide member to the coupling member and the rope spanning step. And removing the guide member from the connecting member.

  In this method, since the unnecessary guide member is removed from the connecting member during the transfer work of the object to be transported by the crane other than the work of passing the winding rope to the pulley, the weight of the crane is increased by the guide member and the transfer work is performed. It is possible to avoid a decrease in workability such as.

  In the method, the guide member includes a rotating body that rotates about an axis extending in a front-rear direction and a direction orthogonal to the up-down direction, and supports the winding rope on an outer peripheral surface of the rotating body in the rope spanning step. It is preferable to move the winding rope forward while rotating the rotating body.

  According to this method, the winding rope can be smoothly moved by the rotation of the rotating body.

  Further, the present invention is a crane, the body, a undulation member attached to the body to be able to undulate, a support member attached to the body to be able to undulate and support the undulation member, A connecting member connecting the tip of the hoisting member and the tip of the support member; and being fixed to the connecting member, the hoisting member extends forward from the machine body, and the support member is located behind the hoisting member with respect to the machine body The rope extending in the front-rear direction above the hoisting member is allowed to move in the front-rear direction with the connecting member extending obliquely forward and downward from the front end of the support member toward the front end of the hoisting member. And a guide member that is supported at a position spaced upward from the upper surface of the hoisting member.

  According to this crane, the rope extending in the front-rear direction above the hoisting member can be supported by the guide member at a position spaced upward from the upper surface of the hoisting member while allowing movement in the front-rear direction. Therefore, when the rope is moved in the front-rear direction above the hoisting member, the rope is prevented from coming into contact with the upper part of the hoisting member or a protrusion provided on the upper part, thereby suppressing damage to the rope. be able to.

  In the crane, it is preferable that the connecting member has a plurality of unit connecting portions connected to each other, and the guide member is fixed to a connecting portion of the unit connecting portions among the connecting portions.

  According to this structure, a guide member can be easily fixed to a connection member using the connection part of unit connection parts.

  The guide member is preferably detachable from the connecting member.

  According to this configuration, when a guide member such as a work for transporting an object to be transported by a crane is unnecessary, the unnecessary guide member can be removed from the connecting member, and the weight of the crane is increased by the guide member, so that the transport work can be performed. It is possible to avoid a decrease in workability such as.

  It is preferable that the guide member has a rotating body that includes an outer peripheral surface on which the rope is placed and rotates around an axis extending in a front-rear direction and a direction orthogonal to the up-down direction.

  According to this configuration, the rope can be moved more reliably and smoothly by the rotation of the rotating body with a simple structure.

  As described above, according to the present invention, a wiring method and a crane that can improve workability while preventing damage to a rope are provided.

It is the side view which showed the structure of the crane which concerns on this embodiment. It is the perspective view which expanded and showed the connection part of the guy line. It is a perspective view of a guide member It is a side view of a guide member. It is the VV sectional view taken on the line of FIG. It is the side view of the crane which showed the mode after a reeving rope routing process implementation. It is the side view of the crane which showed the mode in the middle of implementation of a rope connection process and a guide member fixing process. It is the side view of the crane which showed the mode in the middle of implementation of a guide member fixing process. It is the side view of the crane which showed the mode after implementation of the rope spanning process to a guide member. It is the side view of the crane which showed the mode in the middle of rope implementation process implementation. It is the side view which showed the crane which concerns on other embodiment. It is the side view which showed the usage example of the guide member which concerns on other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, for convenience of explanation, the drawings to be referred to below show only the main members among the constituent members of the crane X1 according to the present embodiment in a simplified manner. Therefore, the crane X1 according to the present embodiment may include any constituent member or any process that is not shown in each drawing referred to in this specification.

(1) Overall Crane Configuration FIG. 1 shows a crane X1 according to the present invention. FIG. 1 shows the crane X1 in a state after being assembled, that is, in a state in which it is possible to carry a load by the crane X1.

  A crane X1 shown in FIG. 1 includes a lower traveling body 2 and a machine body 1 having an upper revolving body 3 disposed on the lower traveling body 2, and an attachment 4 attached to the upper revolving body 3. In the following description, the left-right direction in FIG.

  The lower traveling body 2 of the body 1 is configured to be able to travel on the ground and includes, for example, a pair of crawlers. The upper swing body 3 of the machine body 1 is configured to be capable of turning about an axis extending in a direction perpendicular to a travel surface on which the lower travel body 2 travels, that is, an installation surface of the crane X1.

  The attachment 4 performs a load lifting operation and a suspension operation.

  The attachment 4 includes a boom (lifting member) 5 that can be raised and lowered with respect to the upper swing body 3, a mast (support member) 6 connected to the boom 5, a counterweight 7 provided on the upper swing body 3, and a luggage Are provided with a main winding hook (hanging tool) 8 and an auxiliary winding hook 9 and a guy line (connecting member) 10.

  The boom 5 has a base end portion 5b that is rotatably attached to the upper swing body 3, and a tip end portion 5a that is located on the opposite side of the base end portion 5b. The guy line 10 is a member that connects the tip 5 a of the boom 5, that is, the tip of the boom 5, and the tip of the mast 6 attached to the upper swing body 3. The boom 5 is supported by the mast 6 through the guy line 10. ing.

  The tip of the mast 6 is connected to the counterweight 7 via the wire rope 20. When the wire rope 20 connecting the mast 6 and the counterweight 7 is wound up by the mast winch, the inclination angle of the mast 6 with respect to the ground changes, whereby the boom 5 connected to the mast 6 is raised and lowered.

  As described above, the guy line 10 is a member that connects the distal end portion 5 a of the boom 5 and the distal end of the mast 6. In the present embodiment, two guy lines 10 and 10 are arranged in the width direction of the boom 5 (a direction orthogonal to the paper surface of FIG. 1, hereinafter simply referred to as the width direction of the boom 5). Each guy line 10 includes a plurality (three in the example of FIG. 1) of boom guy links (unit connecting members) 11. That is, one guy line 10 is formed by connecting a plurality of boom guy links 11 to the end parts of other boom guy links 11 adjacent to each other at the longitudinal ends thereof.

  FIG. 2 is an enlarged schematic perspective view of a connecting portion of the boom guy link 11. As shown in FIG. 2, the boom guy link 11 has a main body portion 11a extending in a predetermined direction, and a boom side link portion 12 fixed to one end of the main body portion 11a in the longitudinal direction. The boom side link portion 12 includes a pair of boom side link plates 12a and 12a. The boom side link plates 12a and 12a are fixed to the end portions with the end portions of the main body portion 11a being sandwiched therebetween. Each boom side link plate 12a extends in a direction away from the end of the main body portion 11a, and a through hole 12b is formed at each end.

  The two boom guy links 11 are inserted between the boom side link plates 12a, 12a of the other boom guy link 11 at one end of the boom guy link 11, and the boom side link plate of the other boom guy link 11 is inserted. Pins 13 common to the through holes 12b, 12b formed in 12a, 12a and the through holes 11b (see FIG. 5) formed in the end of one boom guy link 11 (hereinafter referred to as “guy link connecting pins” as appropriate) 13) is inserted and connected.

  Returning to FIG. 1, a main winding winch 52 and a supplementary winding winch 51 for winding and unwinding the wire rope are mounted on the upper swing body 3, respectively. Further, an auxiliary winch 53 for winding and drawing the wire rope is also fixed to the boom 5. The auxiliary winch 53 is attached in the vicinity of the base end portion 5 b of the boom 5. The main winding winch 52 and the auxiliary winding winch 51 may be provided on the boom 5, and the auxiliary winch 53 may be provided on the upper swing body 3.

  The main winding winch 52 winds and pulls out the main winding rope 32 to suspend the main winding hook 8. The auxiliary winding winch 51 winds and pulls out the auxiliary winding rope 31 for suspending the auxiliary winding hook 9. The auxiliary winch 53 winds and pulls out a reeving rope 33 described later.

  The main winding hook 8 is suspended from the front portion of the tip portion 5 a of the boom 5 by a main winding rope 32 connected to the main winding winch 52.

  The main-winding hook 8 includes a hook-side sheave 8a made of a pulley and over which the main-winding rope 32 is stretched. The main-winding rope 32 has one end fixed to the tip portion 5a of the boom 5 and the hook-side sheave 8a. It is stretched over. The main winding hook 8 is suspended from the distal end portion 5a of the boom 5 so that the main winding rope 32 can be moved in the vertical direction by being wound or fed out by the main winding winch 52.

  The tip 5 a of the boom 5 is provided with a guide sheave (pulley) for guiding the main winding rope 32 to the main winding hook 8. In the present embodiment, the first guide sheave 61 and the second guide sheave 62 are fixed to the rear portion and the front portion of the tip portion 5a of the boom 5, respectively. The main winding rope 32 extends from the main winding winch 52 along the rear surface of the boom 5 to the distal end portion 5a of the boom 5, and is stretched over the first guide sheave 61 and the second guide sheave 62 at the distal end portion 5a of the boom 5. In the state, it is hung on the hook side sheave 8a of the main winding hook 8.

  The auxiliary winding hook 9 is suspended from the front portion of the distal end portion 5 a of the boom 5 by an auxiliary winding rope 31 connected to the auxiliary winding winch 51. The end of the auxiliary winding rope 31 is fixed to the auxiliary winding hook 9, and the auxiliary winding hook 9 moves in the vertical direction when the auxiliary winding rope 31 is wound or fed out by the auxiliary winding winch 51. In the present embodiment, the auxiliary winding hook 9 is suspended from a portion on the tip side of the boom 5 with respect to the main winding hook 8.

  In the present embodiment, a third guide sheave 63, that is, a pulley is further fixed to the front portion of the tip portion 5 a of the boom 5. The auxiliary winding rope 31 extends from the auxiliary winding winch 51 along the rear surface of the boom 5 to the distal end portion 5 a of the boom 5, and is stretched over the first guide sheave 61 and the third guide sheave 63 at the distal end portion 5 a of the boom 5. It is fixed to the auxiliary winding hook 9 in a state.

(2) Guide member The structure of the guide member 100 used when wiring the main winding rope 32 is demonstrated. The guide member 100 is used by being fixed to the guy line 10. 3 and 4 are a schematic perspective view and a side view of the guide member 100 in a state where the guide member 100 is fixed to the guy line 10, respectively. In the following description of the guide member 100, the vertical direction in the state shown in FIGS. 3 and 4 is simply referred to as the vertical direction. FIG. 5 is a cross-sectional view taken along line VV in FIG. In FIG. 5, a part of the oblique lines indicating the cross section is omitted so that the drawing becomes clear.

  The guide member 100 includes a guide pulley (rotator, hereinafter referred to as a guide pulley) 130, a support portion 120 that rotatably supports the guide pulley 100, and a pair of link portions for connecting the support portion 120 to the guy line 10. 110, 110.

  Each link part 110 is individually fixed to a pair of guy lines 10 and 10 arranged in parallel. The two link portions 110 and 110 have a symmetric structure (symmetrical with respect to the left-right direction in FIG. 5), and only one link portion 110 will be described here.

  In this embodiment, the link part 110 is fixed to the boom side link part 12 in the guy line 10. The link part 110 has a pair of link plates 111 and 111 extending in the vertical direction. Through holes 111a and 111b are formed at the upper and lower ends of each link plate 111, respectively. The link portion 110 includes two link plates 111 and 111 that sandwich the boom-side link plates 12a and 12a of the boom guy link 11 from the outside, respectively. The link link pins are inserted into the through holes 111a and 111a at the upper ends of the link plates 111. By inserting 13, the boom side link portion 12, that is, the connection portion between the two boom guy links 11 is fixed. In this fixed state, each link plate 111 is rotatable around the central axis of the guy link connecting pin 13.

  The support unit 120 is coupled to the link unit 110 by connecting the pair of connection plates 121 and 121 to the link units 110 and 110, respectively. Each connection plate 121 is a plate-like member extending in the vertical direction. The connection structure between the connection plate 121 and the link part 110 is symmetric (symmetric in the left-right direction in FIG. 5), and here, the connection structure between one connection plate 121 and the link part 110 will be described.

  On the upper part of the connection plate 121, pin receiving portions 121a and 121a projecting from the front surface and the back surface of the connection plate 121 are provided. The connection plate 121 is formed with a pin receiving hole 121b extending from the surface of one pin receiving portion 121a to the surface of the other pin receiving portion 121a and penetrating the connection plate 121. The connection plate 121 is connected to the link portion 110 by inserting a common pin 122 into the pin receiving hole 121b and the through holes 111b and 111b formed at the lower ends of the link plates 111 and 111 of the link portion 110. Is done.

  By connecting each connection plate 121 to each link part 110 in this way, the support part 120 and the guide pulley 130 supported by the support part 120 are fixed to the guy line 10.

  The support part 120 has a column 123 extending between the two connection plates 121, 121. A first support plate 124 and a second support plate 125 respectively extending downward from the support column 123 with a predetermined interval in the longitudinal direction are provided at substantially the center in the longitudinal direction of the support column 123 (left and right direction in FIG. 5). It is fixed. A columnar shaft portion 126 protruding toward the second support plate 125 is provided at the lower end portion of the first support plate 124.

  The guide pulley 130 has a through-hole 130a formed in the central portion of the disk-shaped member, and the shaft portion 126 is inserted into the through-hole 130a so that the shaft portion 126 surrounds the shaft portion 126. It is rotatably supported. The guide pulley 130 is disposed between the first support plate 124 and the second support plate 125 in the longitudinal direction of the column 123, and in a state where the guide member 100 is fixed to the guy line 10, the pair of guy lines 10. 10.

  The support part 120 further includes a pressing part 127 that is detachably fixed to the second support plate 125 and the shaft part 126. The holding portion 127 is a plate-like member that extends from the lower end of the second support plate 125 to a position below the shaft portion 126. At the lower end of the second support plate 125, a protrusion 125a that protrudes on the opposite side (the right side in FIG. 5) from the first support plate 124 is provided. Through holes 127 a and 127 b penetrating the front and back surfaces are formed at the upper end and the lower end of the pressing portion 127, respectively.

  The pressing portion 127 is coupled to the second support plate 125 and the shaft portion 126 by fitting the projection 125a of the second support plate 125 and the shaft portion 126 into the through holes 127a and 127b, respectively. In this state, the retaining portion 128 is inserted into a portion of the shaft portion 126 that protrudes outward (rightward in FIG. 5) from the retaining portion 127, so that the retaining portion 127 moves outward. Be regulated. Specifically, a through-hole penetrating in the vertical direction is formed at the end of the shaft portion 126, and a retaining pin 128 is inserted into the through-hole.

  In this way, the pressing portion 127 is fixed to the second support plate 125 and the shaft portion 126, so that the guide pulley 130 is held at a position between them by the first support plate 124 and the pressing portion 127. The

  In this embodiment, the support part 120 is suspended by a crane or the like while supporting the guide pulley 130, and is connected to the guy lines 10 and 10 (specifically, the link part 110 fixed to the guy lines 10 and 10. , 110), and the post 123 is provided with a wire fixing portion 129 to which a wire for suspension is fixed. In the present embodiment, a pair of wire fixing portions 129 and 129 projecting upward are provided at positions symmetrical with respect to the center in the longitudinal direction of the column 123.

(3) Wiring method of main winding rope Next, the procedure of the wiring operation of the main winding rope 32 using the guide member 100 will be described.

(3-1) Preparation Step First, as shown in FIG. 6, the boom 5 is laid sideways so as to extend forward from the body 1 along the installation surface. For example, the boom 5 is in a posture extending substantially horizontally near the ground. In this state, the second guide sheave 62 and the third guide sheave 63 are located at the lower portion of the tip portion 5 a of the boom 5, and the first guy sheave 61 is located at the upper portion of the tip portion 5 a of the boom 5.

  Next, the mast 6 is raised with respect to the airframe 1 behind the boom 5 so that the guy line 10 extends obliquely forward and downward from the tip (upper end) of the mast 6.

  In the present embodiment, as shown in FIG. 6, the guy line 10 is connected at the connection portion between the boom guy links 11 so that the attachment can be easily performed when the guide member 100 is attached to the guy line 10 in the guide member fixing process described later. The amount by which the mast 6 is caused to be bent is suppressed to be smaller than the maximum amount (the amount by which the guy line 10 extends straight). That is, the portion of the guy line 10 that is located on the tip side of the boom 5 is disposed below the amount that the mast 6 is raised. In addition, if the guide member 100 can be attached to the guy line 10, the guy line 10 may be configured to extend straight at this time.

(3-2) Leaving Rope Routing Step Next, the boom 5 from the lower side of the boom 5 is stretched over the first guide sheave 61 and the second guide sheave 62 while handling the reeving rope 33 that is easier to handle than the main winding rope 32. Route above. Specifically, a rope that is smaller in diameter and weight than the main winding rope 32 and that is easier to deform than the main winding rope 32 is used as the leaving rope 33.

  In this step, first, the leaving rope 33 is pulled out forward from the auxiliary winch 53 around which the leaving rope 33 is wound, below the boom 5. Then, after the leaving rope 33 is hung on the second guide sheave 62, it is lifted upward and hung on the first guide sheave 61. Thereafter, the reeving rope 33 is pulled rearward from the first guide sheave 61 along the upper surface of the boom 5, and the tip of the reving rope 33 is disposed above the boom 5 as shown in FIG. 6.

(3-3) Rope connection process Next, the reeving rope 33 and the main winding rope 32 are connected above the boom 5.

  Specifically, the main winding rope 32 is pulled forward from the main winding winch 52 along the upper surface of the boom 5. In the present embodiment, a connecting metal fitting is attached to each end of the main winding rope 32 and the leaving rope 33, and the main winding rope 32 and the leaving rope 33 are connected by connecting these metal fittings. The reeving rope 33 is pulled to the vicinity of the base end portion 5b of the boom 5, and is connected to the main winding rope 32 in the vicinity of the base end portion 5b.

(3-4) Guide Member Fixing Step Next, the guide member 100 is fixed to the guy line 10. The position at which the guide member 100 is fixed is not particularly limited, but in this embodiment, as shown in FIGS. 6, 7, etc., the connection between the boom guy links 11 positioned at the front side of the guy line 10 in the front-rear direction center. The guide member 100 is fixed to the portion.

  In this step, first, as shown in FIG. 7, the pair of link portions 110 of the guide member 100 are fixed to the guy line 10. Specifically, as described above, the guy link connecting pin 13 is inserted into the through hole 111a at the upper end of the link plate 111 of the guide member 100, and the link plate 111 is attached to the boom side link portion 12, thereby The link part 110 is fixed to the connecting part between the boom side link part 12, that is, the boom guy links 11.

  Next, as shown in FIG. 8, the support portion 120 in a state where the guide pulley 130 is supported is suspended by another crane 200 and disposed near the link portion 110. Specifically, the wire is fixed to the wire fixing portion 129 of the support portion 120, the wire is suspended by the crane 200, and the support portion 120 and the guide pulley 130 are carried between the link portions 110.

  Then, the support part 120 is fixed to the link part 110. Specifically, as described above, the common pin 122 is inserted into the pin receiving hole 121b of the connection plate 121 of the support portion 120 and the through hole 111b of the link plate 111, so that the support portion 120, the link portion 110, Connect.

  After the support part 120 and the link part 110 are connected, the connection between the crane 200 and the support part 120 is released, and the guide member 100 is suspended by the guy line 10.

  In addition, this guide member fixing process may be implemented before a rope connection process and a preparation process.

(3-5) Rope spanning step to the guide member Next, the leaving rope 33 is spanned to the guide pulley 130 of the guide member 100.

  Specifically, the holding portion 127 is removed from the second support plate 125 and the shaft portion 126, and one side (the right side in FIG. 5) of the guide pulley 130 in the width direction of the boom 5 is opened. In this state, the leaving rope 33 is placed on the upper part of the outer peripheral surface of the guide pulley 130. Thereafter, the holding portion 127 is attached to the second support plate 125 and the shaft portion 126. Specifically, as described above, the pressing portion 127 is attached to the through holes 127a and 127b so that the protruding portion 125a and the shaft portion 126 of the second support plate 125 are inserted through the through holes 127a and 127b, respectively. Then, the retaining pin 128 is inserted into a portion of the shaft portion 126 that protrudes outward (rightward in FIG. 4) from the pressing portion 127.

  As a result, as shown in FIG. 9, the leaving rope 33 is supported by the guide member 100 at a position spaced upward from the upper surface of the boom 5.

(3-6) Rope spanning step Next, the auxiliary winch 53 is driven to wind up the leaving rope 33. As a result, the reeving rope 33 is pulled rearward below the boom 5 and moved forward above the boom 5. Accordingly, the main rope 32 moves forward above the boom 5. At this time, the reeving rope 33 and the main winding rope 32 move through a position above the guide pulley 130 of the guide member 100 and spaced upward from the boom 5. Further, the reeving rope 33 and the main winding rope 32 move while rotating the guide pulley 130.

  As shown in FIG. 10, the winding of the reeving rope 33 is performed until the main winding rope 32 passes over the first guide sheave 61 and the second guide sheave 62. That is, as described above, the reeve rope 33 is stretched over the guide sheaves 61 and 62. Then, the main winding rope 32 moves along the routing route of the leaving rope 33. Therefore, the main winding rope 32 is stretched over the first guide sheave 61 and the second guide sheave 62 when the tip of the reeving rope 33 moves to a position below the boom 5 and behind the second guide sheave 62.

  As described above, the main winding rope 32 passes over the first guide sheave 61 and the second guide sheave 62 through a position spaced upward from the boom 5.

(3-7) Guide Member Removal Step Next, the guide member 100 is removed from the guy line 10. Specifically, the guide member 100 is removed by a procedure reverse to the procedure of attaching the guide member 100 to the guy line 10.

  In the present embodiment, when the main winding rope 32 is stretched over the second guide sheave 62, the connection between the main winding rope 32 and the leaving rope 33 is released. Then, only the reeving rope 33 is further wound up. Further, the main winding rope 32 is stretched over the hook-side sheave 8 a of the main winding hook 8, and the end of the main winding rope 32 is fixed to the tip 5 a of the boom 5.

(4) Operation, etc. As described above, in the present embodiment, the reeving rope 33 that is easier to handle than the main winding rope 32 is stretched over the first guide sheave 61 and the second guide sheave 62, and the reving rope 33 is The main winding rope 32 is stretched over the guide sheaves 61 and 62. Therefore, it is possible to easily carry out the main winding rope 32 over the main sheave rope 32 over the guide sheaves 61 and 62, thereby improving workability.

  In addition, a guide member 100 is fixed to the guy line 10, and the reeving rope 33 and the main winding rope 32 are supported by the guide member 100 so as to be movable in the front-rear direction. Therefore, the ropes 31 and 33 can be moved upwardly spaced from the upper surface of the boom 5, and the protrusions provided on the ropes 31 and 33 and the upper part of the boom 5 or the upper surface of the boom 5 during the movement. It is possible to prevent the ropes 31 and 33 from being damaged due to contact with each other.

  In particular, in this embodiment, the guide member 100 is suspended from the guy line 10. Therefore, the guide member 100 can be disposed at a position sufficiently separated from the upper surface of the boom 5 without increasing the vertical dimension of the guide member 100. That is, as a method of supporting the ropes 31 and 33 at a position above the upper surface of the boom 5, a method is provided in which a member protruding upward from the upper surface of the boom 5 is provided and the ropes 31 and 33 are supported by the upper portion of the members. However, in this case, if the ropes 31 and 33 are to be supported further upward, the dimension in the vertical direction of the member increases. On the other hand, in this embodiment, it is possible to more reliably avoid contact between the ropes 31 and 33 and the upper part of the boom 5 while keeping the vertical dimension of the guide member 100 small.

  Further, the ropes 31 and 33 are placed on the outer peripheral surface of the guide pulley 130, and the ropes 31 and 33 move on the outer peripheral surface while the guide pulley 130 rotates. Therefore, the ropes 31 and 33 can be smoothly moved in the front-rear direction while supporting the ropes 31 and 33 at positions spaced apart from the upper surface of the boom 5, and workability can be improved. Moreover, damage to the ropes 31 and 33 accompanying this movement can be suppressed.

  In the present embodiment, the guide member 100 is fixed to the boom side link portion 12, that is, the connecting portion between the boom guy links 11 of the guy line 10. Specifically, as described above, the guide member 100 is fixed to the guy line 10 by inserting the guy link connecting pin 13 provided in the boom side link portion 12 through the through hole 111a of the link plate 111 of the guide member 100. doing. Therefore, the guide member 100 can be easily fixed to the guy line 10.

  In this embodiment, the guide member 100 can be attached to and detached from the guy line 10 as described above, and the guide member 100 is removed from the guy line 10 after the rope spanning step. For this reason, the guide member 100 becomes an obstacle to the work during other work that does not use the guide member 100, for example, the work that transports the load by the crane X1 or the work that causes the boom 5, and the guy line 10 It is possible to avoid such an increase in the weight of the crane X1 and to maintain these workability satisfactorily.

(5) Modified Example In the above embodiment, the guide pulley 130 that rotates around the axis extending in the width direction of the boom 5 as a member that supports the main winding rope 32 and the leaving rope 33 while allowing the movement in the front-rear direction. However, the members that support the ropes 31 and 33 while allowing the ropes 31 and 33 to move in the front-rear direction are not limited thereto. For example, a rope provided with a plurality of rotating bodies rotating around an axis extending in the width direction of the boom 5 may be used, and the ropes 31 and 33 may be supported on the outer peripheral surfaces of these rotating bodies.

  Moreover, although the said embodiment demonstrated the case where the guide member 100 was fixed to the boom side link part 12, the method and structure for fixing the guide member 100 to the guy line 10 are not restricted to this. For example, the guide member 100 may be directly fixed to the main body portion 11a of the boom guy link 11 using a clamp or the like.

  Moreover, the guide member 100 should just be what can be fixed to the guy line 10, and can support this, accept | permitting the movement of the main winding rope 32 in the front-back direction, The detailed structure is restricted to the said embodiment. Absent.

  Further, the guide member 100 may be fixed to the guy line 10 so as not to be detached. And the process of removing the guide member 100 from the guy line 10 may be omitted. However, if the guide member 100 is removed after the main winding rope 32 is hung over the first guide sheave 61 and the second guide sheave 62 as described above, the workability during work other than this hovering work is good. Can be.

  In the above-described embodiment, the case where the guide member 100 is used when the main winding rope 32 is passed over the first guide sheave 61 and the second guide sheave 62 has been described. Alternatively, the guide member 100 may be used when it is passed over the third guide sheave 63.

  In addition, the specific configuration of the crane X1 to which the method and the structure for passing the main winding rope 32 and the auxiliary winding rope 31 according to the embodiment to the guide sheaves 61 and 62 are not limited to the above.

  For example, the present invention may be applied to a crane having a jib that can be raised and lowered with respect to the airframe 1 at the tip of the boom 5 and a hook suspended from the tip of the jib. In this case, the boom 5 and the jib constitute the hoisting member in the claims.

  In addition, the guide member 100 is not limited to the operation of passing the main winding rope 32 and the auxiliary winding rope 31 to the guide support portions 61 and 62 as described above, and moves the rope extending in the front-rear direction above the boom 5 in the front-rear direction. It can be used when performing work.

  For example, in the crane further including the hoisting member connected to the boom 5 and capable of hoisting with respect to the airframe 1 as described above, the hoisting member is caused by using a rope in a state where the boom 5 and the hoisting member are laid down. However, you may use the guide member 100 at the time of this raising work. For example, as shown in FIG. 11, the boom 5, the jib 201 attached to the boom 5 and the body 1 so as to be raised and lowered, and the boom 5 and the body 1 are attached so as to be raised and lowered to support the jib 201. When the crane X10 having two struts 202 and 203 (rear strut 203 and front strut 202) is assembled, a guide member 100 may be used as shown in FIG.

  Specifically, as shown in FIG. 12, the boom 5, the jib 201, and the struts 202 and 203 are laid down along the installation surface. Similarly to the above-described embodiment, the mast 6 is raised behind the boom 5 with respect to the airframe 1 so that the guy line 10 extends obliquely downward and forward from the tip (upper end) of the mast 6. Further, the guide member 100 is attached to the guy line 10. Then, the wire rope 210 pulled out from the winch 52 provided on the boom 5 or the machine body 1 is connected to the rear strut 203, and the wire rope 210 is supported by the guide member 100. Thereafter, the wire rope 210 is wound up by a winch, and the rear strut 203 is caused while the wire rope 210 is passed through a position spaced upward from the upper surface of the boom 5 by the guide member 100. Also in this case, by using the guide member 100, when the wire rope 210 moves along the upper surface of the boom 5, the contact between the wire rope 210 and the upper part of the boom 5 is suppressed, thereby suppressing the damage of the wire rope 210. can do. In FIG. 12, the same components as those of the crane X1 shown in FIG.

1 Airframe 5 Boom (raising / lowering member)
6 Mast (support member)
8 Main winding hook
10 Guy line (connection member)
11 Boom guy link (unit connecting member)
31 Main winding rope (winding rope)
33 Leaving rope 53 Winding device (auxiliary winch)
61 1st guide sheave (pulley)
62 Second guide sheave (pulley)
100 guide member 130 guide pulley (rotary body)
X1 crane

Claims (8)

An airframe, a hoisting member attached to the airframe so as to be raised and lowered, a support member attached to the airframe so as to be raised and lowered, and supporting the hoisting member; And a pulley provided at a tip of the hoisting member, and a pulley provided at a tip of the hoisting member and over which a winding rope for raising and lowering the hoisting device is stretched. A wiring method for wrapping the winding rope on the wire,
A reeving rope routing step in which a reving rope for pulling the winding rope is routed from above the hoisting member to above the hoisting member while the hoisting member extends forward from the body. When,
A rope connecting step, which is performed after the leaving rope routing step and connects the leaving rope and the winding rope above the hoisting member;
A rope spanning step, which is performed after the rope connecting step, pulls a portion of the reeving rope disposed below the hoisting member backward, moves the winding rope forward, and spans the pulley. With
In the rope spanning step, the support member is caused to extend obliquely forward and downward from the tip of the support member toward the tip of the hoisting member as the support member is raised with respect to the airframe behind the hoisting member. In addition, the guide member fixed to the connecting member supports the winding rope in a state where the winding rope is allowed to move in the front-rear direction at a position spaced upward from the upper surface of the hoisting member. Wiring method to move. The wiring method according to claim 1,
The connecting member includes a plurality of unit connecting portions and a relay member that removably connects the unit connecting portions.
A wiring method in which, in the rope spanning step, the winding rope is supported by the guide member fixed to the connecting portion between the unit connecting portions via the relay member. The wiring method according to claim 1 or 2,
Carried out before the rope spanning step, removably fixing the guide member to the connecting member;
And a step of removing the guide member from the connecting member, which is performed after the rope spanning step. In the wiring method in any one of Claims 1-3,
The guide member has a rotating body that rotates about an axis extending in a direction orthogonal to the front-rear direction and the up-down direction,
In the rope spanning step, the winding rope is supported on the outer peripheral surface of the rotating body, and the winding rope is moved forward while rotating the rotating body. A crane,
The aircraft,
A hoisting member attached to the airframe so as to be raised and lowered;
A support member that is attached to the machine body so as to be raised and lowered and supports the raising and lowering member;
A connecting member connecting the tip of the undulating member and the tip of the support member;
The undulating member is fixed to the connecting member, the hoisting member extends forward from the airframe, and the support member is raised with respect to the airframe behind the hoisting member, and the connecting member is moved from the tip of the supporting member to the hoisting member. A guide member that supports a rope extending in the front-rear direction above the hoisting member in a state where the rope extends obliquely forward and downward toward the tip of the hoisting member while being allowed to move in the front-rear direction and spaced apart from the upper surface of the hoisting member. And a crane. The crane according to claim 5,
The connecting member has a plurality of unit connecting parts connected to each other,
The said guide member is a crane fixed to the connection part of the said unit connection parts among the said connection parts. The crane according to claim 5 or 6,
The said guide member is a crane which can be attached or detached to the said connection member. In the crane in any one of Claims 5-7,
The guide member includes a rotating body having an outer peripheral surface on which the rope is placed,
The rotating body rotates around an axis that is orthogonal to the front-rear direction and extends in a direction along the installation surface as the rope moves in the front-rear direction, and allows the rope to move in the front-rear direction.

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