WO1997034824A1

WO1997034824A1 - Crane and method for replacing ropes

Info

Publication number: WO1997034824A1
Application number: PCT/JP1996/000672
Authority: WO
Inventors: Mituo Hirata; Yoshiaki Miyanaga
Original assignee: Hitachi, Ltd.
Priority date: 1996-03-15
Filing date: 1996-03-15
Publication date: 1997-09-25
Also published as: AU4955696A

Abstract

The present invention is intended to easily carry out a replacing operation of ropes for driving a trolley within a short period of time. A rope (105) wound around a drum (100) in a machine room extends therefrom sequentially through a sheave (106) at one end of a girder, a sheave (107) at a main trolley (95), and the same sheave (106) to the drum (100) to be wound therearound. Ropes (125, 125) wound around the drum (100) extend therefrom through sheaves (126) at the other end of the girder, a sheave (127) at an auxiliary trolley (90), and conical drums (140) at the other end of the girder and then returns to the machine room to be fixed therein. The ropes (125) are wound around the drums (140) several times. The rotation of the drums (140) is halted. In replacing ropes, the rope wound around the drum (100) is connected to a new rope wound around a drum in the machine room and to a take-up drum at both ends of the rope around the drum (100) in the machine room.

Description

Description Crane and rope replacement method

The present invention relates to a crane and a method for replacing a rope thereof. In particular, the present invention relates to a crane on which a trolley with suspended hanging devices travels. Background art

There are various ropes in the crane. For example, there are a rope for raising and lowering the hanging tool, a rope for running the trolley with the hanging tool, and a rope for raising and lowering the girder on which the trolley runs. These ropes need to be replaced.

Fig. 27 shows a crane that loads bulk materials, especially a Tachibana-shaped unloader that consists of a main trolley and an auxiliary trolley. The traversing ropes 105X, 105, 125X, and 125X for running the main trolley 95 hanging the grab baguette 58 consist of one traversing drum 1 installed in the machine room. A total of four ropes are drawn out from 00, two in each of the sea and land directions.

The sea-side traversing rope 105X extended in the sea-side direction is fixed to the main trolley 95 via a sheave 106 attached to the end of the sea-side girder. The fixing of the end of the traversing rope 105X to the main trolley 95 is performed by using a rope socket 107x.

The land-side traversing rope 1 25 x extended in the land-side direction is guided to the auxiliary trolley 90 via a sheave 126 attached to the end of the land-side girder, and taken to the auxiliary trolley. It is turned 180 degrees by the attached sheave 1 25 and is fixed to the end of the girder on the land side. The end of the traversing rope 125 x is fixed to the girder using a rope socket 127. Explaining the replacement work of the traversing rope 105x, the traversing drum 100 is operated, and the main trolley 95 and the auxiliary trolley 90 are moved to the most land side. Lower the landing trolley bucket 58 on the main trolley 95 and land it. Insert anchor pins into the main trolley 95 and the auxiliary trolley 90 and fix them to the girder. Raise the tip of the girder. Between the standing point of the girder and the main trolley 95, place a number of sleepers below the traversing rope (above the girder). This is to prevent the traversing rope 105X from drooping greatly.

Next, two seaside traversing ropes 105 x near the seaside rope socket 107 X are temporarily fixed to the main trolley 95 by a chain block or the like. Cut the traversing rope 105 x between the temporary fixing part and the rope socket 107 x.

Next, a messenger rope is suspended from the sieve installed on the main trolley 95. One end of the messenger rope is connected to the end of the transverse rope 105X of the temporary fixing part by welding or the like. The other end of the messenger rope is connected to a take-up drum placed on the ground. The winding drum has an electric motor and a brake.

Also, near the traverse drum 100, two sea-side traverse ropes 105

Temporarily fix X, 105 X in the machine room. Unlock the traversing rope 1 0 5 x from the traversing drum 100. Then completely remove the traversing rope 10.5 x from the traversing drum 100. At this point, the traversing drum 100 has the traversing rope 105X wound only about three times (called a discarded winding state), so that the traversing rope 105x can be easily removed. Connect a new rope to the end of the traversing rope 105 X. The new rope is wound on a reel that has been brought into the machine room. Next, the temporary fixation of the above two places (main trolley 95, machine room) is released. The reel is rotated to feed out a new rope, and the winding drum is rotated to wind up the messenger rope. As this continues, the old traversing rope is wound on the take-up drum and a new rope is placed on the crane. When the tip of the new mouth reaches the position of the original rope socket 107 x, the above two points are re-started. Temporarily fix. Cut between the old lobe and the new rope near the rope socket 107x. Attach a new rope to the rope socket 107X and secure it to the main trolley 95. The transverse drum 100 side is temporarily fixed near the transverse drum 100, and the new lobe is cut near the reel. Then, wrap the rope around the traversing drum three times, and fix the end of the rope to the traversing drum 100. Finally, release the temporary fixation.

The replacement of the shore side rope 1 2 5 x will be described. The main trolley 95 and the auxiliary trolley 90 are at the above positions. The seaside traversing rope 105X is temporarily fixed to the machine room and removed from the traversing drum 100. The landside traverse rope 1 25 X is temporarily fixed to the girder near the land end of the girder. A messenger rope is kneaded to the end of the temporarily fixed lobe 125X in the same manner as described above, and is suspended via a sheave attached to the end of the girder. The messenger rope connects to the ground take-up drum.

In this state, the traversing drum 100 is rotated in the extending direction, and the traversing rope 1 25 X is extended. The protruding traversing rope 1 2 5 X is wound up on a winding drum. If the number of turns of the traversing rope 1 25 X wound on the traversing drum 100 is discarded, the traversing rope 1 25 X near the traversing drum 100 is temporarily fixed to the machine room. Remove the traversing rope 1 2 5 X from the traversing drum 100. Connect the new rope of the reel to the old rope. The following is the same as changing the seaside traverse rope 105X. Disclosure of the invention

Generally, replacement of the seaside traverse rope requires 10 workers and 3 days. In addition, ten workers need two days to change the shore side ropes. In this way, the replacement of the traversing rope requires a lot of time and personnel. The replacement of traversing ropes is required several times a year, saving time and money. Lower is desired.

In addition, since it requires a total of 5 days, it may not be possible to carry out the replacement of the shore-side ropes in line with the sea-side lobe replacement due to the ship's entry into the port. Many. This makes it difficult to arrange and replace workers.

The reason why it takes a lot of time to replace the rope is considered to be as follows. Fixing the traversing rope to the trolley girder requires a rope socket, and fixing and releasing the rope is cumbersome and time-consuming.

It takes a lot of time to grab the rope from the outside and pull it with a chain block.

Since the gripping force when changing ropes cannot be increased, it is necessary to support the ropes with sleepers. For this reason, a large number of sleepers must be brought in from the ground, which requires a lot of time.

The messenger rope needs to be arranged and it takes time.

Since the work is performed at a high place, it is necessary to install scaffolds and take sufficient safety measures. The work is divided into two parts: the operation of the reel in the machine room where the new rope is wound and the operation of the take-up drum on the ground. It is necessary to synchronize the work of both parties, but due to the remote location, sufficient communication is required.

Temporary fixing in the main trolley, installation of sheaves, installation of sleepers, installation of rope sockets, placement of messenger ropes, etc. are dangerous because they are performed at heights.

An object of the present invention is to make it possible to easily replace a rope in a short time.

The present invention is characterized in that the rope is not fixed to one end of the trolley girder, one end of the rope is connected to the drum, and the other end is fixed to the drum or the machine room. To explain an example, a rope wound around a drum in a machine room is sequentially connected to a first sheave at one end of a girder, a second sheave at an outlet for traveling the girder, and a third sheave at a lower end of the girder. And wound around the drum.

Another example is a rope wound on a drum in a machine room, a first sheave at one end of a girder, a second sheave of a trolley running on the girder, and a rotating body at one end of the girder. And is fixed to the machine room via

To change the rope, for example, connect one end of the rope to a new rope on the machine room drum and connect the other end to the take-up drum.

In the present invention, the “rotating body” refers to a sheave, a conical drum, two rotating bodies with ropes, and the like. The term “mobile object” refers to an undulating girder. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a layout diagram of ropes of a rope trolley type unloader according to one embodiment of the present invention.

FIG. 2 is a side view of the rope trolley type unloader of FIG.

FIG. 3 is an enlarged side view of the machine room of FIG.

FIG. 4 is a plan view of FIG.

Figure 5 is a side view of a drum with a new rope.

FIG. 6 is a plan view of FIG.

FIG. 7 is a plan view near the traversing drum.

FIG. 8 is a side view of FIG.

FIG. 9 is a front view of the fixing device in use.

FIG. 10 is a front view of the fixing device in an unused state.

FIG. 11 is a plan view of FIG.

FIG. 12 is a longitudinal sectional view of a main part of a fixing device according to another embodiment of the present invention. Figure 13 is a diagram illustrating how to replace the shore-side lobe and sea-side traverse rope in Figure 1.

FIG. 14 is an enlarged plan view of the conical drum portion of FIG.

Figure 15 is the left of Figure 14! !

FIG. 16 is a longitudinal sectional view of a main part of a fixing portion of a traversing rope according to another embodiment of the present invention.

FIG. 17 is a diagram illustrating a second method of replacing the land-side traversing rope in FIG. FIG. 18 is a view for explaining a third method of replacing the land-side traversing rope in FIG. FIG. 19 is a diagram for explaining a fourth method of replacing the land-side traversing rope in FIG. FIG. 20 is a view for explaining a fourth replacement method of the traverse rope on the land side in FIG. FIG. 21 is a layout diagram of a traversing rope of a rope trolley type crane according to another embodiment of the present invention.

FIG. 22 is a layout view of a traversing rope of a lobe trolley type crane according to another embodiment of the present invention.

FIG. 23 is a layout view of a traversing rope of a rope trolley type crane according to another embodiment of the present invention.

FIG. 24 is a layout view of a traversing rope of a rope trolley type crane according to another embodiment of the present invention.

FIG. 25 is a layout view of the crane girder undulating rope according to one embodiment of the present invention.

FIG. 26 is a layout view of an undulating rope according to another embodiment of the present invention.

Fig. 27 is a layout drawing of the traversing rope of the conventional rope trolley type crane. BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment in which the present invention is applied to a rope trolley type bridge type loader will be described with reference to FIGS. 1 to 11 and FIGS. 13 to 15. Figure 1 and Some of the figures in Fig. 13 and Fig. 13 are inconsistent with Figs. The existing drums of the supporting drum 70, the opening / closing drum 80, the traversing drum 100, and the undulating drum 300 do not have motors, reduction gears, brake devices, and the like.

Above the girder 53 supported by the four legs 50, a machine room 60 in which various drums are installed is installed. Reference numeral 57 denotes a hopper which receives the bulk from the grab bucket 58.

Opening / closing ropes installed in the machine room 60 The two opening / closing ropes 75 pulled out from the drum 70 are the sieves 76 installed in the mast 55, the auxiliary trolley 90 sieves 91, and the auxiliary trolley It is connected to the grab bucket 58 via the sheave 96 of the main trolley 95 on the sea side more than 90. The two supporting ropes 85 pulled out from the supporting drum 80 installed in the machine room 60 are connected to the sheave 76, the sheave 91 of the catching trolley 90, and the sheave 96 of the main trolley 95. It is connected to Grab Bucket 58 via the order.

One traversing rope 105 pulled out from the traversing drum 100 installed in the machine room 60 to the sea side is a sheave 106 at the sea side end of the girder 53 and the main trolley 95 It is wound on the traversing drum 100 via sheave 107 and sheave 106 sequentially. That is, both ends of the traversing rope 105 are wound around the traversing drum 100. The winding directions of both ends of the traversing rope 105 around the traversing drum 100 are the same, and the winding amount is the same.

Two traversing ropes 1 2 5 extended from the traversing drum 100 to the land side are girder

The machine room via the sheaves 1 2 6 at the land side end of 3 3, the sheaves 1 2 7 of the auxiliary trolley 90 and the conical drum 1 4 0 at the land side end of the girder 5 3 3 It is fixed at 60. The fixed end of the transverse lobe 1 25 into the machine room 60 is called the fixed end 1 2 9. The other end of the traversing rope 125 is fixed to the drum 100, and this fixed end is called a drum fixed end. A rope 125 is wound about three times around the conical drum 140. One end of the rope 125 wound around the conical drum 140 reaches the sheave 127. The other end reaches the fixed end 12 9. The conical drums 140 and 140 are installed at both ends of the equalizing beam 160. The equalizing beam 160 is horizontally rotatable at the end of the girder 53 on the land side. The conical drum 140 does not rotate during loading. This configuration will be described later.

The winding directions of the traversing ropes 125 and 125 around the traversing drum 100 are the same, and the winding amount is the same. The winding direction of the traversing rope 125 is opposite to that of the traversing rope 105.

The main trolley 95 runs on the guiders 53 and 53a. Auxiliary trolley 9 0 is girder

Drive only 5 3 Each of the drums 70, 80, 100 has an electric motor and a brake device. Girder 5 3 sea side girder 5 3a undulating drum

Raised and lowered by 210.

In FIGS. 3 and 4, reference numeral 300 denotes an undulating drum for undulating the girder 53a. Drums 300, 70, 80, and 100 are installed sequentially from the sea side to the land side. Drums 70, 80, and 100 are located below the sea-side drum as they go to the land side, so that the rope passes below the sea-side drum.

In the machine room 60, replacement devices for the traversing ropes 105, 125, and 125 are installed between the traversing drum 100 and the land-side wall. This equipment consists of a drum 160 wound with a new traversing rope 105, a traversing robe to be replaced (old mouth), a capstan 180 winding up a 105, a new traversing robe 1 Drums 180 and 180 around which 25 and 125 are wound are installed. The capstan 180 is known in the art and is driven by a motor 18 1. The axes of the capstan 180 and the drum 160 are set parallel to the axis of the traversing drum 100. Drum 160 and capstan 180 are located within the range of both ends of traversing drum 100. The drums 170 and 170 are located outside the drum 160 and the cabinet 180. The lobe of the drum 170 is a circle Since it is connected to the conical drum 140, the rope connecting the drums 170, 170 and the conical drums 140, 140 should be perpendicular to the axis of the drum 170. Has been installed. Drums 160 and 170 are wound with new ropes.

In FIGS. 5 and 6, the device of drums 160, 170 and 170 is the drum 1

Mounts 16 3 and 17 3 that rotatably support both ends of the 60 and 170 shafts, manual brake devices 16 4 and 17 4, and a manual clutch that connects both shafts Switches 16 5 and 17 5. The pedestals 163 and 173 allow the drums 160 and 170 to be inserted and removed from above. The brake devices 164 and 174 are of a contraction type, for example, which fastens a drum with a band, and the operation levers 164a and 174a are projected. The device of the drum 170 has a roller 1776 on the sea side more than the drum 170. When supplying the new rope 1 25 from the drum 170, the new rope 125 is transferred from the drum 170 via the roller 1 76 to the conical drum 14 as shown in Fig. 5. Reaches 0. FIG. 6 shows a state in which the ropes 125 are fixed to the machine room 60.

In FIGS. 3, 4, and 7, a crane 190 is installed on the ceiling in the machine room 60. The crane 190 can run in the direction of travel of the trolley 95 and at right angles to it, and lifts the drums 160 and 170 and replaces them.

The rope 125 from the conical drum 140 passes below the roller 176 to a fixed point 129. Fixed point 1 29 is closer to the sea than roller 1 76. The rope has a predetermined length before the fixed point. This predetermined length is a length that is easy to connect to the new rope of the drum 170. The fixed points 12 9 and 12 9 are fixed to the floor 61 of the machine room 60 by fixed devices 200 d and 200 d.

On the floor 62 between the traversing drum 100 and the supporting drum 80, fixing devices 200a, 200a, 100b, and 200b that temporarily fix the traversing rope 105 are provided. Installed. The distance between the traversing drum 100 and drum 160, Fixing devices 200c and 2000c for temporarily fixing the traversing ropes 125 are installed. As described above, four sets of fixing devices 200 for fixing or temporarily fixing the ropes 105 and 125 are installed. The fixing device 200 is in the machine room 60. The fixing device 200 is installed below the target rope. Each set consists of two fixing devices. Note that when the fixing devices are collectively referred to, or when they indicate an unspecified fixing device, etc., they are referred to as fixing devices 200, and when they indicate a specific fixing device 200, the numbers 200 are a, b, c, and d. Is attached.

In FIGS. 7 and 8, reference numeral 105a denotes a position at which the seaside traverse rope 105 is fixed to the drum 100 (the position of the end of the drum 100 in the axial direction). The fixed position 105 a is located on the shaft end side of the drum 100. Reference numeral 125a denotes a position at which the land side traverse rope 125 is fixed to the drum 100 (the position of the end of the drum 100 in the axial direction). The fixed position 125 a is located at the center of the drum 100 in the longitudinal direction.

The X mark indicates the range where the ropes 105, 125, and 125 are currently wound around the drum 100.

Sea side traversing ropes Fixed rigs for 105: 2 sets of g 2 0 0, traversing drum

It is located closer to the sea than 100. One set of fixing devices 200a and 200a is installed at the first temporary fixing position. That is, when the main trolley 95 is at the most land side, it is installed below the traversing rope 105 connected to the traversing drum 100. That is, this position is below the traversing rope 105 connecting the traversing drum 100 and sheave 106 in the discarded state. Another set of fixing devices 200b, 200b is installed at the position of the second temporary fixing. That is, when the old rope 105 is replaced with a new rope, this is a position below the rope connected to the drums 160 and 170. Since this position is difficult to specify, fixing devices 200b and 200b are installed at the assumed positions. The fixing devices 200b, 200b are not necessarily required. The fixing device 200b may be installed on a vertical surface. The fixing devices 200 c and 200 c for the shore-side horizontal ropes 125 are installed on the floor 61 on the shore side of the traverse drum 100. A pair of fixing devices 200c and 200c are used to move the new lobe from sheave 126 to traverse drum 100 and to move between traverse drum 100 and sheave 126. It is installed below the rope. Since the position at this time is difficult to specify, the fixing devices 200c and 2000c are installed at expected positions.

Rollers 195 that support the transverse rope 105 are installed on the sea side rather than the sea side fixing devices 200a, 200a, 200b, and 200b.

The fixing device 2 ◦ 0 will be described with reference to FIGS. 9 to 11. The fixing device 200 sandwiches the rope 105 (125) from above and below. A plurality of upper arc-shaped protrusions 203 are located between the plurality of lower arc-shaped protrusions 202. The convex portion 202 faces upward, and the convex portion 203 faces downward. A rope 105 passes between the two. The plate 205 having the lower convex portion 202 is fixed to the machine room 60 by welding or the like. A plurality of bolts 206 are mounted on the plate 205 so as to be vertically rotatable between the lower convex portions 202 and the convex portions 202. That is, the lower end of the bolt 206 is welded to the plate 205 via the hinge 209. Porto 206 is provided between the convex portions 202 and 202 at both ends of the convex portion 202. The upper convex portion 203 is provided on the plate 207. The plate 207 has an elongated hole 207a through which the bolt 206 passes. Since the rope 105 is sandwiched between the protrusions 202 and 203 from above and below, the lobe 105 can be firmly fixed. The number of the convex portions 202 and 20 is determined by the required fixing force.

The fixing devices 200a, 200b, and 200c put the upper plate 207 on the rope 105 during temporary fixing, and the ports 206 and nuts 206 The rope 105 is sandwiched between the upper and lower convex portions 202 and 203 by η. Normally, the upper plate 206 is removed and the bolt 206 is lying down. Therefore, the movement of the rope 105 is not obstructed. The length of the protrusions 202 and 203 is more than the diameter of the rope 105 long. Therefore, even if the positions of the traversing ropes 105 and 125 in the axial direction of the traversing drum 100 are uncertain, they can be fixed.

The lower convex portion 202 is located below the horizontal ropes 105, 125 so as not to contact the moving rope. The lower convex part 202 can be a roller. In this case, the length of the convex portion 202 is the length of the movement range of the rope. In addition, the number of upper convex portions 203 is increased.

At the fixed point 129, the lobe moves in the longitudinal direction, but does not move substantially in the lateral direction (the axial direction of the traversing drum). Therefore, except for the hinge 209, the bolt 206 is set upright. Can be kept. The fixed point 1 29 is located below the fixing device 200 c and the roller 27 2 so that the rope connected to the drum 170 can be placed at the tip side of the fixed point. .

In such a configuration, if the sea-side traversing rope 105 is rotated in the direction of being wound around the traversing drum 100, the land-side traversing lobe 125 is fed out of the traversing drum 100 by the same amount. The main trolley 951 moves in the sea direction by the amount of the traversing rope 105 wound on the traversing drum 100, and at the same time, the auxiliary trolley 90 moves only half the travel distance of the main trolley 201. Move in the sea direction. At this time, since the distance between the main trolley 95 and the auxiliary trolley 90 is widened, the grab bucket 58 suspended on the main trolley 95 is expected to rise, but the auxiliary trolley 90 and the auxiliary trolley 90 are likely to rise. Since the distance between the grab buckets 5 and 6 is reduced by the same amount, the lifting height of the grab bucket 58 is the same regardless of the movement of the trolley.

A method for replacing the traversing ropes 105 and 125 will be described with reference to FIGS. First, how to replace the seaside rope 105 will be described.

S11: The traverse drum is rotated to move the main trolley 95 and the auxiliary trolley 90 to the land side most.

S13: Insert anchor pins 95p and 90p into main trolley 95 and auxiliary trolley 90, and fix them to girder 53. Turn the open / close drum 70 and support drum 90 Turn over and open grab bucket 58 to land. This landing is not necessary.

S15: The undulating drum 210 is driven to raise the sea-side girder 53a. S 17: The traversing rope 105 between the traversing drum 100 and the sheave 106 is temporarily fixed to the machine room 60 by fixing devices 200 a and 200 a. At this time, if the traversing drum 100 is rotated in the direction in which the traversing rope 105 is fed, it is easy to fix the traversing drum 100. The fixing devices 200a, 200a are below the lobes 105, 105 between the drum 100 and the sheave 106 in the discarded state.

S19: Release the fixing of each end of the traverse lobe 105 to the traverse drum 100, and remove the traverse rope 105 from the traverse drum 100. In this state, the number of windings of the traversing ropes 105 and 105 on the traversing drum 100 is a discarded winding state, so that the traversing rope 105 can be easily removed.

S21: One end of the transverse lobe 105 is welded to the new lobe of the drum 160. The other end of the traversing rope 105 is wrapped around a capstan 180. If the length of the rope at the other end is short, an appropriate rope is connected by welding and wrapped around the capstan 180. Hang the end of the rope wrapped around the 180 cabins from the machine room 60 to the ground side. Hang an appropriate weight on the hanging rope. The large diameter side of the cabin 180 is on the extension of the fixing device 200a on the other end side.

S23: The temporary fixing of the fixing devices 200a and 200a is released.

S25: Release the brake device 164 and pay out a predetermined amount of new rope from the drum 160. Next, the rotation of the drum 160 is stopped. The drum 160 has a brake device 164 to prevent the rope from being pulled out too much.

S27: The old rope is wound by rotating the cabustane 180. By performing this procedure also for the drum 160 having a motor, the synchronization between the drum 160 and the cabinet 180 can be eliminated.

S29: Repeat steps S25 and S27. The last stage is drum 1 6 With a slight brake applied to 0, a new mouthpiece may be pulled by the cabin 180. On the ground, the rope from the capstan 180 is treated as waste by cutting it or wound on a winding drum. Eliminating the rope from the traversing drum 100 is called discharging.

S31: When the new mouth reaches the capstan 180, the new rope is fixed between the drum 160, the capstan 180 and the sheaves 106, 106. Temporarily fixed to the machine room 60 by 0 b and 200 b. Tilling the drum 160 and the capstan 180 makes it easier to fix. The fixing devices 200b, 200b are located below the new rope between the drum 160, the hubstan 170 and the sheaves 106, 106. Since the drum 160 and the hubstan 180 are wound with ropes, the positions of the ropes are difficult to determine. For this purpose, the new rope is moved in the axial direction of the traversing drum 100 to align with the positions of the fixing devices 200 b and 200 b. This movement is performed by pulling the rope with a chain block or the like. In addition, it is also possible to fix to the fixing devices 200a and 200a.

S33: Cut the new mouth between the temporary fixing part and the drum 160, the capstan 180. The rope has a length that is wrapped about three times around the traversing drum 100 from the temporary fixing part to the tip side.

S35: When the replacement of the rope is completed, wrap each end of the rope around the traversing drum 100 three times, and fix the end of the rope to the traversing drum 100.

S37: Release the temporary fixing of the fixing devices 200b and 200b.

As a result, the traversing rope 105 can be replaced.

A take-up drum can be used instead of the capstan 180. The take-up drum has a base similar to the drum 160, and the drum can be attached and detached from above. It also has a driving device for rotating the drum. The drive unit has a brake device. The drive and drum can be connected by a manual clutch. The following describes how to replace the shore-side ropes 125, 125 with the replacement of the traverse rope 105. Hereinafter, this exchange method is referred to as a first exchange method.

S51: After step S33, connect the traversing ports 1 25, 1 25 at the tip from the fixed points 1 29, 1 29 to the new ropes of the drums 170, 170. I do. The rope of drum 170 passes beneath roller 176 to conical drum 140. Also, the conical drums 140 and 140 are made rotatable. Details will be described later.

S53: Release the fixation of the fixed points 1 229 and 1 229 by the fixing devices 200d and 200d.

S555: Release the brake devices 1774 and 1744 and pay out a predetermined amount of new rope from the drums 170 and 170. Next, the rotation of the drums 170 and 170 is stopped. The drum 170 has a brake device 174 in order to prevent excessive rope payout.

S57: The traversing drum 100 is rotated in the winding direction, and the traversing ropes 125,

Wind up 1 2 5. At this time, the traversing drum 100 has substantially no rope groove for winding the traversing opening 1 25, 1 25, so the traversing rope 1 25, 1 25 Wrap over. The operator operates the traversing ropes 1 25 and 1 25 to perform lap winding. Even in the case of the drum 170 having a motor, this procedure can eliminate the need to synchronize the drum 100 with a new drum.

S59: Repeat steps S55 and S57. The last step is to pull a new rope with drum 100, with a slight brake applied to drum 170.

S61: When the new rope reaches the traversing drum 100, the rotation of the drums 100 and 170 is stopped, and the new rope between the traversing drum 100 and the sheaves 126 and 126 is stopped. The regular lobe is temporarily fixed to the machine room 60 by the fixing devices 200c and 200c. When the drums 100 and 170 are rotated, it is easy to fix them. The fixing devices 200c, 200c are located below the new rope between the traversing drum 100 and the sheaves 126, 126. At this point, the horizontal drum 100 has the rope wrapped around it, so that the position of the rope is difficult to determine. For this purpose, the new rope is moved in the axial direction of the traversing drum 100 so that it is aligned with the fixing devices 200c and 200c. This movement is performed by pulling the rope with a chain block or the like.

S63: Cut the gap between the temporary fixing part (200c, 200c) and the traversing drum 100. It has a length that is wound about three times around the traversing drum 100 from the temporary fixing part to the tip side.

S65: Rotate the traversing drum 100 in the payout direction, and pay out the old rope to the ground side. Attach a weight to the unwound rope and hang it down from the machine room 60. The above processing is performed on the ground.

S67: When all the old ropes have been discharged, wrap the tip of the new rope around the traversing drum 100 three times and fix the tip to the drum 100.

S69: The temporary fixing of the fixing devices 2000c and 2000c is released.

S71: Rotate drums 170 and 170, and pay out a new rope. S73: The traverse drum 100 is rotated in the winding direction to wind up a new lobe.

S75: Repeat steps S71 and S73.

S77: When a new rope is wound to the predetermined position S of the traversing drum 100 (the winding state at the start of step S51), the drums 100 and 170 are stopped. Then, a new rope between the traversing drum 100 and the drums 170, 170 is fixed to the machine room 60 by the fixing devices 200d, 200d. The fixed points are 12 9 and 12 9. Also, do not rotate the conical drums 140 and 140. Details will be described later. S79: Cut the rope between the fixed points 12 9 and 12 9 and the drums 16 0 and 16 0. It is long enough to connect to the drum 170 at the next rope change from the fixed point 1229, 1229 to the tip side. Secure so that it does not interfere with other ropes.

S91: Wrap both ends of the seaside traverse rope 105 around the traverse drum 100 three times and fix the end to the traverse drum 100.

S93: Release the temporary fixing of the traversing rope 105.

S95: The drums 160 and 170 are removed by the crane 190. When replacing the mouthpieces 105, 125, place the new drums 160, 170, 170 on the bases 16, 63, 173.

As a result, the traversing ropes 1 25 and 1 25 can be exchanged.

According to the above-mentioned method, the drums 160, 170, 170, and the hubstan 180, on which new ropes are wound, are installed in advance, so that the rope replacement can be easily performed. Things.

Also, since the drum 160 and the capstan 180 are arranged between the drums 170 and 170 connected to the conical drums 140 and 140, the drum 160 and the capstan 180 are arranged. The position of the seaside lobe 105 connected to the traverse drum 100 can be within the range of both ends of the traversing drum 100. That is, the moving range of the traversing rope 105 can be the same as before.

Further, since the fixing device 200 for temporary fixing is previously installed at a predetermined position g in the machine room 60, temporary fixing can be easily performed. Further, since it can be firmly fixed, it is not necessary to carry many sleepers supporting the traversing rope 105 into the girder 53. In addition, it is possible to eliminate the need for a rope socket, which is a laborious and time-consuming rope socket. Also, the installation work of the messenger rope and the sieve for it can be eliminated.

For this reason, according to trial calculations, the replacement work of the traversing rope 105 on the sea side was 5 people X 0. It can be done in about 5 days. According to trial calculations, it is possible to replace the shore-side horizontal ropes 125, 125 in five people X 0.5 days. For this reason, the replacement work time and the number of workers can be greatly reduced. In addition, since the working time is short, the rope can be replaced using the free time when the ship enters the port.

In addition, work at the end of the main trolley 95 and the end of the girder 53 can be eliminated, and can be performed safely.

Further, it is not necessary to measure the length of a new rope as in the embodiment described later, and it can be easily performed. In addition, the number of temporary fixing can be reduced, and the work can be facilitated.

The new rope holding capacity of the drums 160 and 170 can be changed so that multiple rope changes can be made.

The embodiment of the fixing device 200 shown in FIG. 12 is such that the bolt 206 can be moved along the axial direction of the traversing drum 100. The head 206 a of each port 206 is T-shaped, and enters a T-shaped groove 261 provided along the convex portion 202. The bolt 206 is detachable from the groove 261. The lengths of the convex portions 202 and the grooves 261 are provided over the entire range of the assumed temporary fixing position. The protrusion 203 and the plate 207 may have a length necessary to hold the ropes 105 and 125. According to this method, the port 206 can be moved in accordance with the position of the rope at the time of temporary fixing, so that the port can be easily fixed. Further, the fixing devices 200a and 200b can be combined into one.

Next, the conical drum 140 will be described. The traverse lobe 1 25 is wound around the conical drum 140 several times and then fixed to the machine room 60. For this reason, the fixing force of the fixed point 1 29 can be reduced, and the fixing means of the fixed point can be simplified. Since the need for a socket is eliminated, rope replacement can be simplified. If winding is not performed more than once, a conventional rope socket or the like may be used. Also, the traversing rope 125 is wound multiple times around the non-rotating conical drum 140 and then fixed to the machine room 60. For this reason, the fixing force of the fixed point 1 29 can be reduced, and the fixing means of the fixed point 1 29 can be simplified. Since the need for a rope socket is eliminated, lobe replacement can be simplified.

Further, since a large force does not act on the machine room 60, even if the traverse lobes 125 are fixed to the machine room 60, the strength design of the machine room 60 can be made in the same manner as in the past. It is. For this reason, it is possible to easily modify the existing crane and adopt the present invention. The method of modifying existing cranes will be described later. With the new crane, it is easy to install the conical drum 140 in the machine room 60.

The configuration of the conical drums 140 and 140 will be described with reference to FIGS. The conical drum 140 has a conical portion that is enlarged toward one end in the axial direction. The purpose is similar to that of known capstans. The traversing rope 125 is wound around the drum 140 three times. The rope on the fixed end 12 9 side is located on the large diameter side, and the rope on the sieve 1 27 side is located on the small diameter side. The rope entering the conical drum 140 from the drum 160 moves sequentially to the smaller diameter side. For this reason, the rope is not wound around the drum 140, and the rope can be replaced.

The conical drums 140 and 140 are rotatably installed at both ends of the equalizing beam 130. The drums 140 and 140 are supported by equalizing beams 130 and 130 on the upper and lower surfaces thereof. The arm 13 1 is located between the upper and lower equalizing beams 130, 130. The arm 13 1 is rotatably connected to the equalizing beams 130 and 130 between the drums 140 and 140 by pins 132. The arm 13 1 is rotatably connected to the girder 53 by a pin 13 3.

A lever is provided at the end of the rotating shafts 144 and 144 provided integrally with the conical drum 140. — 14 5 and 1 4 6 are fixed detachably. The end of the shaft 144 is, for example, hexagonal, and the holes at the ends of the levers 144, 146 are also hexagonal. After inserting levers 1 45 and 16 at the shaft end, levers 1 4 5 and 1 4 6 are held by Porto 1 4 7 through the seat. The tips of levers 1 45 and 1 46 can overlap. The height positions of the tips of the levers 1 4 5 and 1 46 are different. A pin 149 can be inserted into the overlapping portion. When the pin 149 is inserted, the lever 145 is connected to the lever 146, and the conical drums 140, 140 cannot rotate.

To replace the traversing ropes 1 2 5 and 1 2 5, remove the pin 1 49, remove the port 1 47, and remove the levers 1 4 5 and 1 46. This allows the conical drums 140, 140 to rotate. Since the rotation axes of the conical drums 140 and 140 are vertical, the structure for supporting the drum 140 can be simplified as compared with the case where the drums are horizontal. The bolts 147, levers 145, 146, and pins 149 can be attached and detached from above. The following procedure is as described above.

When the lobe replacement is completed, the drums 140,

Rotate 1 40 so that pin 1 49 can be inserted. According to this, the drums 140 and 140 can be easily fixed with a simple configuration. The conical drum 140 installed on the equalizing beam 130 can be used as a normal sieve, and the conical drum 140 can be installed in the machine room 60 between this sheave and the fixed end 129. . According to this, all of the lobe replacement work can be performed in the machine room 60, and can be made more secure.

Even if a pin is inserted into the flange 140b of the conical drum 140, rotation can be prevented. The center of rotation of the conical drums 140, 140 can be vertical.

FIG. 16 shows a case where the conical drums 140 and 140 are not installed. Sheaves 220 and 220 are provided in place of the drum 140. One sieve 220 is provided at each end of the equalizing beam 222. Sieve 2 2 0, 2 2 0 The lower piece 2 23 a of the equalizing beam 2 23 extends along the traverse lobes 125, 125 between the and the drums 170, 170. The fixing device 200 R is installed in this part. Since a large force acts on the fixing device 200R, the fixing device 200R has a larger number of projections 220, 203 and bolts 2 than the fixing device 200 for temporary fixing. It has 0 6.

Next, the second replacement method for the shore side ropes 125 and 125 will be described with reference to FIG. In this method, an old lobe 125 wound around a traversing drum 100 is wound around a drum 230. There are two drums 170 and 230 respectively. The device of the take-up drum 230 is composed of a drum, an electric motor for cultivating the drum, and a brake device. In the following description, description of items substantially similar to those described above will be omitted.

S101: Steps S63 to S63 of the first exchange method are executed.

S103: The ends of the old ropes 125, 125 wound on the traversing drum 100 are wound and connected to the winding drums 230, 230.

S105: The traversing drum 100 is rotated in the feeding direction.

S107: The drums 230 and 230 are rotated, and the old rope is wound around the drums 230 and 230.

S109: Repeat steps 105 and 107.

S111: When almost all the old lobes of the traversing drum 100 are wound around the drums 230, 230, the drums 100, 230, 230 are stopped and the old lobes 1 25 Release from the end of the traverse drum 100.

S1 13: Wind all old ropes 1 25 around drums 230 and 230. S115: Steps S67 and on of the first replacement method are performed.

According to this replacement method, the old rope 125 can be lowered onto the ground while being wound on a drum.

In the replacement of the traversing rope 105, the first method of replacing the traversing rope 125 Or the second exchange method can be applied. It will be explained very briefly.

S121: Remove only one end of the traversing rope 1005 in the discarded state from the traversing drum 100.

S123: Connect the new rope of drum 160 to the removed rope 105 and wind the traverse lobe onto the traverse drum.

5 1 2 5: Step S63 and subsequent steps are executed.

Next, a third replacement method for the shore side ropes 125, 125 will be described with reference to FIGS. In this method, the old rope is wound on the winding drums 230 and 230 from the beginning. The ropes 125 and 125 on the sheave 127 side are located on the large diameter side of the conical drum 140.

S131: After step S33, take up the traversing ropes 125, 125 at the end from the fixed points 1229, 1229 and connect them to the drums 230, 230.

S 1 3 3: Release fixed points 1 2 9 and 1 2 9.

5 1 3 5: Rotate the traversing drum 100 and pay out the traversing ropes 125 and 125.

S137: Winding Up the old rope by rotating drums 230 and 230.

5 1 3 9: Step S 13 5 and Step S 13 7 are repeated.

S11: When the number of turns of the traversing ropes 125, 125 around the traversing drum 100 becomes about three, the traversing lobe between the traversing drum 100 and the sheave 1 26 Temporarily fix 1 25, 1 25 to machine room 60 with fixing devices 200, 200. The position of the fixing device 200 is the position of the traversing rope 125 in a discarded state.

S143: Unlock the traverse ropes 125, 125 to the traverse drum 100, and remove the lobes 125, 125 from the drum 100.

5 1 4 5: Drums 170, 17 at ends of removed horizontal ropes 1 25, 1 25 Connect to zero new ropes.

S 17: Release the temporary fixation.

S149: Steps S25, S27 and S29 are executed, and a new rope of drums 170 and 170 is taken up, and the new ropes are transferred to drums 230 and 230.

S151: Steps S149 are performed until a predetermined amount of new rope is wound around the winding drums 230 and 230. The rewinding amount of the new rope in the drums 230 and 230 is the amount that the traversing drum 100 wound at the start of the step S131. The winding amount is determined by the number of rotations of the drum 170 and the drum 230. Alternatively, the roller is brought into contact with a new rope, and the length is measured from the rotation speed of the roller.

S153: The ropes between drums 170, 170 and sheaves 126, 126 are temporarily fixed to machine room 60 by fixing devices 200, 200. The position of this fixing device 200 is below the new rope between the winding drum 100 and the sheave 126.

S155: Cut the rope between the temporary fixing part and the drums 170, 170. It has a length that is wrapped about three times around the traversing drum 100 from the temporary fixing part to the tip side.

S157: Wrap the temporarily fixed rope around the traversing drum 100 three times, and fix the end to the traversing drum 100.

S155: Release the temporary fixation.

S166: The drums 170 and 170 are rotated in the feeding direction.

S166: The traversing drum 100 is rotated in the winding direction.

S 16 5: Repeat steps S 16 1 and S 16 3.

S167: When the new rope is wound up to the state of step S131, stop rotation of drums 100, 170, and 170.

S 17 1: Between drums 170 and 170 and conical drums 140 and 140 The rope is fixed to the machine room 60 with the fixing devices 200 d and 200 d.

S 167: Cut the rope between the fixed points 12 9 and 12 9 and the winding drums 230 and 230.

Next, a fourth replacement method of the land side traversing rope 125 will be described with reference to FIG. 20. In this method, the trolley 95 is moved to the sea side most, and the old rope from the drum 100 is moved. This facilitates discharge of the pump.

S181: Step S35 is executed after step S33.

S 1 8 3: Operate the undulating drum 210 to level the sea-side girder 53 a. Remove the anchor pins 95p and 90p from the main trolley 95 and the auxiliary trolley 90. Operate the opening / closing drum 70 and the supporting drum 80 to lift the grab bucket 58. Grab bucket 58 shall be suspended.

S185: The traverse drum 100 is rotated to move the main trolley 95 and the auxiliary trolley 90 to the sea side most. As a result, the number of turns of the traverse lobes 125 and 125 around the traverse drum 100 is discarded.

S187: The main trolley 95 and the auxiliary trolley 90 are fixed to the guide 53a with anchor pins 95p and 9Op.

S189: The transverse ropes 125, 125 between the transverse drum 100 and the sheave 126 are temporarily fixed to the machine room 60 by the fixing devices 200, 200. The position of the fixed device S 200 is the position of the lobe 125 in the discarded state.

S191: Release the fixing of the traversing ropes 125, 125 to the traversing drum 100, and remove the traversing lobes 125, 125 from the traversing drum 100.

S193: Take up the traversing ropes 125, 125 removed from the traversing drum 100, and connect them to the drums 230, 230.

S195: Connect the leading ropes 125, 125 to the new ropes of drums 170, 170 from the fixed points 1229, 1229. Release the fixed points 1 9 and 1 9. S197: Steps S25, S27 and S29 are executed.

5 1 9 9: Winding end of new rope reaches drums 230 and 230. Fixing device for ropes between sheaves 126 and 126 and drums 230 and 230. Temporarily fixed to the machine room 60 by 0 0 and 200. The ropes between the conical drums 140 140 and the drums 170, 170 are fixed to the machine room 60 by fixing devices 200d, 200d.

5 201: Rope between the temporary fixing part and drums 230, 230, fixed points 12 9, 12 9 and drums 170, 170 And cut to a predetermined length. -S203: Wrap the new rope ahead of the temporary fixing part around the traversing drum I00 three times, and fix the end to the traversing drum 100.

In the fourth method, in step S193, the fixed points 129,

The winding drum 1 230 may be connected to the winding drums 230 and 230, and the rope on the traversing drum 100 side may be connected to the drums 170 and 170.

The fourth method is substantially the same as the method of replacing the seaside traversing rope 105.

The crane with one trolley will be described with reference to FIG. One end of a rope 2 32 fixed to one trolley 53 t by a fixing device 20 OR is wound around a traversing drum 250 via a sheave 25 3 at the sea side end of the girder. The other end of the rope 252 is wound around a traversing drum 250 through a sheave 254 at the land side end of the girder. The direction in which one end of the traversing rope 250 is wound around the traversing drum 250 is opposite to the other end. Conventionally, the mouthpiece 255 has been cut off at the trolley 53 t, and there are two ropes. The mounting position of the fixing device 200 for temporary fixing is the same as that of the above embodiment. For example, it is installed at the position of the second replacement method of the traversing ropes 125. For this reason, the procedure of temporary fixing and the like is the same as in the above-described embodiment, and only the essential points will be described. These points are the same in other embodiments described below.

To replace the lobe 252, move the trolley 53t to the sea end or land end, and discard one end of the rope 252 to make it into a wound state. Remove the throw-away rope 2 52 from the traversing drum 2 50. The new lobe of drum 170 is connected to this, and the old lobe is wound. The old rope is wound around drum 250. The following procedure is as described above. For example, a first replacement method, a second replacement method, and a third replacement method of the traversing ropes 125 can be used.

Fig. 22 shows a case in which one trolley 53 t traversing rope is used for the sea side and the land side. The traversing rope 2 62 on the sea side of the traversing drum 260 passes through the sheave 263, the trolley 53 t sheave 264, and the sheave 264 and sheave 263 sequentially passes through the traversing drum 260. It is wound. Landing traverse rope of traversing drum 260

The 266 is wound on a traverse drum 260 through a sheave 267, a trolley 53-t sieve 268, a sheave 268, and a sheave 267 sequentially. Traversing drum

The wrapping direction of the transverse lobes 26 2 and 26 6 around 260 is the same as that of the transverse lobes 105 and 125. In the past, the trolley 53 t had a section 2 64,

There is no 268, and the ropes 26 2 and 26 6 are fixed to the trolley 53 t. There are two orifices 26 2 and 2 66 respectively.

In this case, lobes 262 and 266 can be replaced by various methods of changing the traversing rope 105. For example, first, the trolley 53 t is moved to the land side, the rope 262 is discarded, and both ends of the lobe 262 are removed from the drum 260, and in this state, the first method is used. Exchange. Next, the trolley 53 t is moved to the sea side, and the rope 2666 is replaced by the first method.

FIG. 23 shows a means for removing the slack of the transverse lobes 25 2. The traversing ropes 2 52 are the sheaves 2 53 of the garbage 5 3 a, the sheaves 2 53 of the trolley 5 3 t, the sheaves 2 8 3, the same sheaves 2 84, the sheaves 2 8 5, and the sheaves 2 5 of the garage 5 3 5 Calls are made sequentially to 4. Sheave 2 84 between sheave 2 8 3 and sheave 2 8 5 リ Pulled by oil damper 287 installed at 53 t. The sheave 284 can move in a direction (width direction) perpendicular to the traveling direction of the trolley 53 t. When the traversing port 252 becomes loose, the rod of the oil damper 287 retreats, and the rope 252 becomes loose. Since the sheave 284 is located between the sheaves 283 and 284, the moving direction of the rod of the oil damper 287 is linear. Sheave 2 283 and sheave 285 can be located on the same axis.

Sheave 2 84 moves only if lobe 2 52 becomes loose. For this reason, the rope 252 does not normally move with respect to the sheaves 292, 293, and 294. Therefore, by installing such a slack removing means on the trolley 53 t, damage to the rope can be reduced.

FIG. 24 shows a means for removing the slack of the traversing ropes 26 2 and 26 6. The traverse lobe 2 62 is successively applied to the sheave 26 3 of the girder 53 a, the sheave 29 2 of the trolley 53 t, the same sheave 29 3 and the same sheave 29 4 . Sheave 293 is pulled by an oil damper 297 installed on trolley 53 t. Sheave 293 can move in the traveling direction of trolley 53 t. If traversing lobes 26 2 or 26 6 become slack, the rod of oil damper 297 retreats and loosens rope 26 2 or 26 6. Sheave 284 is halfway between sheaves 283 and 284. The reason why the sheave 293 for removing the slack of the rope and the oil damper 297 are installed on the trolley 53 t is the same as in the embodiment of FIG. An oil damper 2997 may be installed on one of the ropes 26 2 and 26 6. If the distance between the lobes 26 2 and 26 2 is small, the sheaves 29 2 and 29 4 are unnecessary as shown in Fig.1.

FIG. 25 shows an application to the rope 302 for raising and lowering the girder 53a. The ropes 302 of the undulating drum 300 in the machine room 60 are the sheaves 303 of the upper part of the master 55, the sieves 304 of the girder 53a, the sieves 304, Top sheave 30 5 of mast 55, sheave 30 6, top sheave 30 5 of mast 55, gas The sheaves are wound around the undulating drum 300 via a sheave 308 and a sheave 307 of the order 53 d sequentially. Therefore, the number of the undulating ropes 302 is one. The rope 302 is generally wrapped a plurality of times between sheaves 303 and sheave 304 and between sheaves 307 and 308. The rope 302 between the sheave 305 and the sheave 306 is fixed to the upper seat 309 of the mast 55 by a fixing device 200R. In the machine room 60 between the undulating drum 300 and the sheaves 303, 307, fixation devices g200, 2,000 for temporarily fixing the discarded ropes 302 are installed. I have. Conventionally, the rope 302 is cut off at the portion of the seat 309, and there are two ropes. .

A method of replacing the undulating rope 302 will be described.

S 2 2 1: The girder 53 a is leveled by the undulating drum 300. For this reason, the number of turns at both ends of the lobe 302 of the undulating drum 300 is discarded. Girder 53a is supported by link 53d.

S2 23: Lobe 302 is temporarily fixed by fixing devices 200 and 200. S225: Remove the fixing device 200R.

S 227: The following procedure is the same as the above-mentioned various exchange methods of the traversing rope 105.

In the embodiment of FIG. 26, the rope between the sheaves 303 and the sheaves 307 is not fixed to the upper part of the mast 55. There are no sheaves 3 0 5 and 3 0 6. The ropes 302 a and 302 b of the drum 300 are fixed to the machine room 60 200 d via the sieves 303 and 307 and the conical drums 140 and 140, respectively. Fixed to 200 d. The ropes 302 a and 302 b are wound on the conical drums 140 and 140 a plurality of times. A plurality of fixing devices 200 for temporarily fixing the ropes 302 a and 302 b on the undulating drum 270 side are installed in the machine room 60. The conical drums 140, 140 are provided with anti-rotation means.

Explaining how to replace the undulating ropes 302a and 302b, The girder 53 is leveled by the undulating drum 300. The following procedure is substantially the same as the fourth replacement method of the traversing ropes 125 described above.

The ropes 302a and 302b can be exchanged even when the girder 53a is upright. In this case, the first replacement method, the second replacement method, and the third replacement method of the traversing ropes 125 can be used.

The rope can be easily replaced by modifying the crane with the conventional port arrangement. Figure 27 is a conventional crane corresponding to Figure 1. The ropes 105, 105 are fixed to the equalizing beam 331, of the main trolley 95, by rope sockets 107x, 107x. The ropes 125, 125 are fixed to the equalized beam 13 Ox at the land side end of the girder by rope sockets 127x, 127x. An example of the procedure for remodeling this crane will be described.

S301: A predetermined number of fixing devices 200 are installed at predetermined positions in the machine room 60.

S303: Move the main trolley 95 and the auxiliary trolley 90 to the most land side. Land the Dara Bucket 5 8. Raise girder 5 3a. A sleeper that supports the rope 105 is placed between the girder's standing point and the main trolley 95.

S305: The ropes 105 and 105 near the equalizing beam 301 are temporarily fixed to the main trolley 90 by a chain block or the like. Cut the ropes 105 and 105 between the temporary fixing point and the equalizing beam 301.

S307: Equalize beam 331 is removed, and the member with sieve 107 is installed on main trolley 95.

S309: With a short third rope hung on the sleeve 107, it is connected to the temporarily fixed ropes 105, 105 by welding. The third rope can be small in diameter.

S311: Temporarily fix ropes 125 and 125 near equalizing beam 130x to girder 53 by chain block or the like. Cut the ropes 125, 125 between the temporary fixing point and the equalizing beam 13Ox. S 3 13: Equalize beam 130 x is removed, and equalize beam 130 provided with conical drums 140 and 140 is set on girder 53.

S315: Two fourth ropes are hung on the conical drums 140, 140, and are connected to the temporarily fixed lobes 125, 125 by welding. The other end of the fourth lobe is connected to the machine room 60, or the drum 170 of the machine room 60, or the winding drum 230. The conical drum 140 has anti-rotation means.

S 3 17: The following procedure is as described above.

As described above, the separation part can be connected by adding the sheave, the third rope, and the fourth rope.

This retrofit method can be used for other types of cranes. For example, in the case of a conventional traversing rope corresponding to FIG. 21, a third rope is connected between two lobes fixed to a trolley 53 t. The case of the traversing rope corresponding to FIG. 22 is the same as the case of the rope 105 of FIG. 27, and a description thereof will be omitted. In the case of the conventional undulating rope corresponding to FIG. 25, a third rope connects between the two mouths fixed to the seat 309. To convert the conventional crane corresponding to Fig. 25 into the structure shown in Fig. 26, the third rope wound around the conical drums 140, 140 at the ends of two ropes fixed to the seat 309 Connect each rope.

The easy installation of the rope by installing the fixing device 200 in the machine room in advance can also be applied to the exchange of a lobe other than the above-mentioned traversing rope and the undulating rope. For example, it can be used to replace a hoisting rope of a container crane. A predetermined number of fixing devices 200 are installed near the winding drum.

The fixing device 200, 200R may be a normal rope grip. Industrial applicability

Claims

The scope of the claims

1. The lobe wrapped around the drum of the machine room is sequentially passed through the first sheave at one end of the girder, the second sheave of the trolley running on the girder, and the third sheave at one end of the girder. Wound on a drum,

The direction of the first rope is reversed by the second sheave;

A crane characterized by:

2. The first rope wound on the drum of the machine room is sequentially passed through the first sheave at one end of the girder, the second sheave of the trolley running on the girder, and the third sheave at one end of the girder. Wrapped around the drum,

The second rope wound around the drum is sequentially passed through a fourth sheave at the other end of the girder, a fifth sheave of a trolley running on the girder, and a sixth sheave at the other end of the girder. Wrapped around the drum,

The direction of the first rope and the direction of the second rope are reversed by the second sheave and the fifth sheave,

A crane characterized by:

3. The cradle according to claim 2, wherein at least one of the second sheave and the fifth sheave is movably provided by a damper.

-N.

4. The rope wrapped around the drum in the machine room is connected to the first sheave at one end of the girder, the second sheave at the entrance that runs through the girder, and the rotating body at one end of the girder. Fixed in the machine room via the order,

A crane, characterized in that the direction of the rope is reversed by the second sheave.

5. The crane according to claim 4, wherein the rope near the rotating body is fixed to a member that rotatably supports the rotating body.

6. The crane according to claim 5, wherein the rope is fixed to the member at a position after passing through the rotating body from the second sheave.

7. The crane according to claim 4, wherein the rope is wound around the rotating body a plurality of times, and the rotating body has means for preventing rotation.

8. The rotator according to claim 7, wherein the rotator wound around the rope a plurality of times has a conical portion expanding toward a shaft end, and the rope is wrapped around the conical portion a plurality of times. Crane.

9. The device according to claim 7, wherein the means for preventing rotation has a lever detachably provided on a shaft of the rotating body, and has means for preventing rotation of the lever. crane.

10. In claim 8,

The lobes are two,

There is one cone for each of the lobes,

Having a lever on each axis of the cone,

Having a pin connecting the ends of the levers of each of the conical portions;

A crane characterized by:

11. In claim 10, the rotation axis of the conical portion is oriented in a vertical direction, the two levers are installed on the upper portion of the conical portion, and the pin is insertable from above. A crane characterized in that:

12. The crane according to claim 7, wherein the rotating body formed by winding the rope a plurality of times is installed at one end of the girder.

13. The crane according to claim 7, wherein the rotating body having the rope wound plural times is installed in the machine room.

14. The respective lobes of the first drum and the second drum of the machine room are suspended via the first trolley and the second trolley running on the girder in sequence, and The rope wound on the third drum is sequentially passed through a first sheave at one end of the girder, a second sheave of the second trolley, and a third sheave at one end of the girder. Wrapped around the third drum,

A second rope wound around the third drum, a fourth sheave at the other end of the girder, a fifth sheave installed on the first trolley, It is fixed to the machine room via the rotating body at the other end in sequence,

The number of the second ropes is twice as large as the number of the first ropes.

15. The first rope wound on the first drum of the machine room is connected to the first sheave at one end of the girder, the second sheave of the trolley running on the girder, and the first sheave at the other end of the girder. Wound around the first drum in sequence via sheave No. 3

Two second ropes wound around the first drum are connected to a fourth sheave at the other end of the girder, a fifth sheave at a portal running through the girder, and a rotation at the other end of the girder. It is fixed to the machine room via the body sequentially,

A second platform rotatably supporting a second drum wound with a new rope for the first rope, and a second gantry having a second brake device for the second drum; In the machine room parallel to

A cable or a winding means for winding the first rope;

1 in the machine room parallel to the drum,

The winding means has a driving device for rotatably supporting a third drum capable of winding the first rope, and rotating the third drum.

A fourth platform rotatably supporting a fourth drum wound with a new rope for the second lobe, and having a fourth brake device for the fourth drum A crane installed in each of the machine rooms on both sides of the first drum.

16. The rope wound around the drum in the machine room is wound around the drum sequentially through the first sheave at one end of the girder, the trolley running on the girder, and the second sheave at the other end of the girder. ,

The lobe is fixed to the trolley,

The crane, wherein the mouthpiece is wound around the drum so that one end of the lobe is wound up and the other end is unwound by rotating the drum.

1 7. In Claim 16,

The securing of the rope to the trolley is performed by applying the lobe to at least three sheaves installed on the trolley,

One of the three sheaves is movably provided by a damper,

A crane characterized by:

18. The rope wrapped around the drum in the machine room is connected to the first sheave at the upper end of the mast, the second sheave of the girder on which the trolley runs, the third sheave at the upper end of the mast, The fourth sheave in the capital of the mast, also the fifth sheave, the sixth sheave at the top of the mast, the seventh sheave of the girder running the trolley, the eighth at the top of the mast After passing through the sheave sequentially, wrap around the drum,

Fixed to the upper part of the mast between the fourth sheave and the fifth sheave,

A crane characterized by:

1 9. The rope wound on the drum in the machine room is connected to the first sheave at the upper end of the mast, the second sheave of the girder on which the trolley runs, the third sheave at the upper end of the mast, Being fixed to the machine room sequentially through the tillers of the machine room. The crane to mark.

20. The crane according to claim 19, wherein the rope is wound around the rotating body a plurality of times, and a means for rotating and preventing rotation of the rotating body is provided.

21. The crane according to claim 20, wherein the rotating body has a conical portion that expands toward the shaft end, and the rope is wound around the conical portion a plurality of times.

22. The method according to claim 21, wherein the means for preventing rotation is provided by:

A crane comprising: a lever detachably provided on a shaft; and means for preventing rotation of the lever.

2 3. In Claim 22,

The ropes are two,

There is one cone for each of the ropes,

Having a lever on each axis of the cone,

Having a pin connecting the ends of the levers of each of the conical portions;

A crane characterized by:

24. The rope of the drum in the machine room is connected to the drum or the machine room via the first sheave of the member on which the drum is installed, the moving body to be moved, and the second sheave of the member in order. Fixed,

In the machine room between the drum and the first sheave or the second sheave, a fixing device for fixing the rope when replacing the rope is installed.

The fixing device includes a seat fixed to the fixing device, and a detachable second seat, One of the seat and the second seat has irregularities facing the other, and the other seat has irregularities having at least one convex portion facing the one seat. The convex portion of the concave and convex portion of the second seat can enter the concave portion of the other concave and convex portion,

The protrusion is continuous along the axis of the drum,

The length of the irregularities along the axis is larger than the diameter of a rope.

25. The crane according to claim 24, wherein the second seat of the fixing device is provided so as to be fixed at a desired position along an axis of the drum.

26. In Claim 24, the seat of the fixing device is installed below the lobe between the drum and the first sheave or the second sheave. And the crane.

2 7. Two conical parts expanding toward the shaft end,

A lever detachably provided at a shaft end of each of the conical portions,

A pin passing through an end of each of the levers,

And a drum.

2 8. A first seat provided with a plurality of convex portions in parallel,

A second seat having a convex portion that can be inserted between the front convex portion and the convex portion; fastening means for fixing the second seat and the first seat;

Rope fixing device.

29. The rope fixing device according to claim 28, wherein the second seat has a plurality of the protrusions.

30. In Claim 28,

The fastening means comprises a bolt and a nut,

The bolt is turned to the first seat at both longitudinal ends of the first seat. That they are pivotally connected,

A rope fixing device characterized by the above-mentioned.

3 1. In Claim 28,

The first seat has a T-shaped groove along the convex portion,

The head of the port is T-shaped to enter the groove,

A rope fixing device characterized by the above-mentioned.

3 2. Operate the first drum of the machine room where both ends of the first rope for moving the moving body are wound in the same direction, and discard the winding state of the first rope on the first drum. Move the moving body until it is in a winding state,

Remove both ends of the first rope from the first drum,

Connecting one end of the first rope to a new rope wound around a second drum of the machine room, and connecting the other end to a third drum of the machine room;

Unwinding a new rope from the second drum and winding the first rope around the third drum;

A method of replacing a rope, characterized by the following.

3 3. One end of the first rope for moving the moving body is wound around the first drum, and the other end is fixed to the machine room where the drum is installed. Attach a new lobe of the second drum of the machine room to the other end of the first rope.

While rotating the second drum in the unwinding direction, rotating the first drum in the winding direction, winding all of the first rope around the first drum,

Disconnecting the connection between the first rope and the new rope,

Rotating the drum in the opposite direction to eject the first mouthpiece from the drum, connecting the new rope to the first drum,

Rotating the second drum in a pay-out direction; Rotating in the rewind direction to wind the new rope around the first drum;

A method of replacing a rope, characterized by the following.

34. The method according to claim 32, wherein, when discharging the first rope from the first drum, winding the first rope by a third drum installed in the machine room. A featured rope replacement method.

35. The machine room is connected to a crane in which one end of a first rope for moving a moving body is wound around a first drum and the other end is fixed to a machine room in which the first drum is installed. A second drum of the machine room is connected to the other end of the first rope of

While rotating the first drum in the unwinding direction, rotating the second drum in the winding direction, and discharging all the first ropes of the first drum,

Connecting the first rope detached from the first drum to a new mouth of a third drum,

By rotating the third drum in the unwinding direction and rotating the second drum in the winding direction, the entire first rope is wound on the second drum,

Disconnecting the connection between the first rope and the new rope,

Connecting the new rope to the first drum,

Rotating the third drum in the unwinding direction, rotating the first drum in the winding direction, and winding the new rope around the first drum;

A method of replacing a rope, characterized by the following.

36. One end of the first rope for moving the moving body is wound around the first drum, and the other end is fixed to the machine room where the first drum is installed. Moving the moving body until the winding state of the first rope around the first drum becomes a discarded winding state;

Connecting the other end of the first rope of the machine room to one of a new lobe or a third drum of the second drum of the machine room;

One end of the first rope detached from the first drum is connected to a new rope of the second drum or the other of the third drum of the machine room, and the second drum is connected to the other end of the second drum. While rotating in the feeding direction, the third drum is rotated in the winding direction, and is wound on all the third drums of the first mouthpiece.

Disconnecting the connection between the first rope and the new rope,

Connecting the new rope to the first drum,

Rotating the second drum in the unwinding direction, rotating the first drum in the winding direction, and winding the new rope around the first drum;

A method of replacing a rope, characterized by the following.

37. The rope replacement method according to claim 35, wherein the first rope is detached from the first drum in a state where the dub suspended from the trolley is suspended.

38. Rotate the first drum with both ends of the first rope running on the trolley in opposite directions, and discard the winding state of one end of the first rope around the first drum. Move the trolley until it is wound up,

Removing one end of the first rope from the first drum,

Attach a new rope wrapped around the second drum to one end of the removed first rope,

Rotating the second drum in the unwinding direction and rotating the first drum in the winding direction; As the new rope reaches the first drum, it separates the old and new ropes,

The first drum is rotated in the unwinding direction to discharge the old rope. Next, one end of the new rope is fixed to the first drum, and a new rope is discharged from the second drum. Unwinding and rotating the first drum in the winding direction;

A method of replacing a rope, characterized by the following.

39. In Claim 38, when discharging the first rope from the first drum, winding the first rope by a third drum installed in the machine room. A featured rope replacement method.

40. In a crane in which two ropes wound in the same direction around the drum in the machine room are fixed to a trolley running on the girder through the first sieve at one end of the girder. ,

A second sieve was installed at a fixed point between the two lobes and the entrance, and the second seam was attached to the ends of the two first ropes removed from the fixed point. Connecting both ends of the third rope hung on the

A method of remodeling a crane characterized by the following.

4 1. The two lobes wound in the same direction around the drum in the machine room are sequentially passed through the first sheave at one end of the girder and the second sheave of the trolley running on the girder. In a crane fixed to one end of a girder,

Two rotating bodies are installed at fixed points between the two ropes and the girder, and at the ends of the two first ropes removed from the fixed points, respectively, the rotating bodies are provided. Connect one end of the third rope

Fixing the other end of the third rope to the machine room;

A method of remodeling a crane characterized by the following.

4 2. Connect the first rope wrapped around the drum in the machine room to the first The girder is fixed to a trolley that travels through a girder, and a second rope wound in the opposite direction around the drum is passed through a second sheave at the other end of the girder. In the crane fixed to

Connecting the end of the first rope and the end of the second rope at the two fixed points with a third rope,

A method of remodeling a crane characterized by the following.

4 3. Place two lobes wound in the same direction around the drum in the machine room on the first sheave at the top of the mast, on the second sheave of the girder on which the trolley runs, and on the mast. In the crane fixed to the upper part of the mast via the third sheave at the end and the fourth sheave at the upper part of the mast in order,

Connecting the rope at the fixed point of one of the two ropes to the end of the rope at the fixed point of the other lobe with a third rope. Remodeling method.

4. Two ropes wound in the same direction around the drum of the machine room are connected to the first sheave at the upper end of the mast, the second sheave at the girder where the trolley runs, and the first sheave at the upper end of the mast. In the crane fixed to the upper part of the mast, sequentially through the sheave No. 3 and the fourth sheave above the mast,

A third rope is connected to the end of each rope via the fourth sheave,

Winding the third rope around a rotating body installed in the machine room a plurality of times and fixing the third rope to the machine room;

A method of remodeling a crane characterized by the following.