JP2023154303A - Derricking rope cradle, and method of using derricking rope cradle - Google Patents

Abstract

To provide a derricking rope cradle which can safely and easily bring a derricking rope into a transport state, and a method of using the derricking rope cradle.SOLUTION: A derricking rope cradle 39 is used as a transport jig for a construction machine comprising a gantry 22 derrickably and detachably provided on a revolving body and a derricking winch winding a derricking rope 24, and stores and transports a portion of the derricking rope 24 fed out from the derricking winch in a state where the derricking rope 24 is arranged in the gantry 22. The derricking rope cradle 39 comprises: a bottomed frame-like storage portion 41 storing the portion of the derricking rope 24 as a bundle 40 obtained by winding multiple times and bundling; a hanging portion 42 for lifting; and attaching portions 43, 44 capable of being attached to and detached from the gantry 22.SELECTED DRAWING: Figure 2

Description

The present invention relates to an undulating rope mount and a method of using the undulating rope mount, and more particularly, to a method of using an undulating rope mount and an undulating rope mount used when disassembling and transporting construction machinery.

Due to mass limitations during transportation of large construction machines, such as 3-point pile drivers, the gantry and attached middle sheave block must be removed from the upper revolving body and transported together, and then assembled and used on site. (For example, see Patent Document 1.)

Japanese Patent Application Publication No. 2019-131364

In preparation for attaching and detaching the gantry, the undulating ropes are assembled into a shape suitable for transportation. The hoisting rope is a wire rope with a length of over 100m, and after being paid out from the hoisting winch mounted on the upper revolving structure, the hoisting rope is passed through the gantry sheave block, wrapped around multiple sheaves of the middle sheave block, and the rope is The end is connected to the gantry sheave block.

Normally, the hoisting ropes are assembled together while they are placed on a gantry, and a method is used in which a portion extracted from the drum of a hoisting winch is tied and fixed to the gantry. However, such work is a heavy burden on the worker because it involves climbing up on a gantry and requiring the labor of fixing it using wire (relatively soft iron wire).

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hoisting rope mount and a method for using the levitation rope mount, which can safely and easily transport a hoisting rope.

In order to achieve the above object, the hoisting rope mount of the present invention is used as a transportation jig for construction machinery, which is equipped with a gantry that can be hoisted and detachably installed on a revolving structure, and a hoisting winch that winds a hoisting rope. In a state where the hoisting rope is placed on the gantry, the hoisting rope portion is wound around a plurality of times and bundled in a hoisting rope mount that stores and transports the hoisting rope portion paid out from the hoisting winch. It is characterized by comprising a bottomed frame-shaped storage section for storing as a bundle, a hanging section for lifting, and a mounting section that can be attached to and detached from the gantry.

Further, a method of using the hoisting rope mount according to the present invention is a method of using the hoisting rope mount, which comprises aligning the hoisting rope mount in the direction in which the hoisting rope of the hoisting winch pays out the hoisting rope in a state where the gantry is laid down. placing the hoisting rope on the ground, while feeding out the hoisting rope, storing the bundle in the storage part in the shape of a figure 8 in plan view; and removing the end of the hopping rope from the drum of the hopping winch. and the step of attaching the undulating rope pedestal to the gantry using the hanging part and the attaching part are performed in sequence.

According to the present invention, the hoisting rope mount includes a bottomed frame-shaped storage section that stores the hoisting rope portion as a bundle, a hanging section for lifting, and a mounting section that is detachable from the gantry. Now, it is now possible to collectively process the undulating ropes on the ground, which previously required work at heights, and the subsequent work such as crane transportation, attachment to the gantry, and separation and loading of the gantry can be carried out more efficiently. can. That is, the undulating rope can be brought into a transport state safely and easily. Moreover, since the bundle of undulating ropes is stored in a figure-eight shape when viewed from above, both rope ends are fixed, that is, one rope end is attached to the gantry and the other rope end is fixed. Even when the ropes are fixed to the hoisting winch, no unreasonable force is applied to the hoisting ropes, and a stable storage state can be obtained.

FIG. 1 is a side view of a gantry equipped with an undulating rope pedestal according to an embodiment of the present invention. 2 is a view taken along arrow II-II in FIG. 1. FIG. 2 is a sectional view taken along line III-III in FIG. 1. FIG. 2 is a sectional view taken along line IV-IV in FIG. 1. FIG. It is a figure which shows the work process of similarly storing a undulating rope in an undulating rope mount. It is a figure showing the working process of separating the undulating rope mount from the upper revolving body together with the gantry. 7 is a sectional view taken along line VII-VII of FIG. 6. FIG. 7 is a sectional view taken along line VIII-VIII in FIG. 6. FIG. 7 is a sectional view taken along line IX-IX in FIG. 6. FIG. It is a side view of the pile driver to which the undulating rope mount is similarly applied.

1 to 10 are diagrams in which the undulating rope mount according to one embodiment of the present invention is applied to a pile driver, which is an example of a construction machine. As shown in FIG. 10, the pile driver 11 includes a base machine 14 consisting of a lower traveling body 12 and an upper rotating body 13 that is rotatably provided on the upper part of the lower traveling body 12, and a front part of the upper rotating body 13. A leader bracket 15 is removably attached to the front end of the leader bracket 15, a leader 16 is provided at the front end of the leader bracket 15 so that it can be raised and lowered, a pair of left and right front jacks 17 are provided on both sides of the leader bracket 15, and an upper swivel It includes a pair of left and right outrigger jacks 18 provided at the rear of the body 13 and a pair of left and right backstays 19 that support the leader 16 from the rear of the upper revolving body 13.

Furthermore, an outrigger box 20 to which an outrigger jack 18 is attached, and a counterweight 21 placed on the outrigger box 20 are provided at the lower rear end of the upper revolving body 13. Furthermore, a gantry 22 is provided above the rear part of the upper revolving body 13 so that it can be raised and lowered and is detachably attached.

As shown in FIG. 5, the gantry 22 includes a gantry sheave 25 for guiding a hoisting rope 24 that is let out from a hoisting winch 23 provided at the rear center of the upper revolving body 13. In addition, when the gantry 22 is erected (FIG. 10), the hoisting rope 24 rises upward from the hoisting winch 23, passes through the pulley 25a of the gantry sheave 25, and connects to the plurality of pulleys 26a of the front middle sheave block 26 and the gantry sheave. The end 24a of the rope is fixed to the support shaft 25b of the gantry sheave 25 (FIG. 2). Furthermore, one end of a pendant rope 27 is connected to the leader 16, and the other end of the pendant rope 27 is connected to the middle sheave block 26. In this manner, with the undulating rope 24 disposed on the gantry 22, the leader 16 can be undulated by winding or letting out the undulating rope 24 with the undulating winch 23.

Further, as shown in FIGS. 8 and 9, the gantry 22 has a lower end connected to a pair of left and right front brackets 28, 28 provided at the front of the main frame of the upper revolving body 13, with a hydraulic pin connecting device 29. A pair of left and right front legs 30, 30 are attached detachably and rotatably in the direction, and the upper ends are rotatably attached to the upper ends of the front legs 30, 30 via the support shaft 25b of the gantry sheave 25, A pair of left and right rear legs 33, 33 whose lower ends are rotatably and removably attached to a pair of left and right rear brackets 31, 31 provided at the rear of the main frame of the upper revolving body 13 by means of a hydraulic pin connection device 32. It is provided in the rear part of the revolving upper structure 13 so that it can be raised and lowered by, for example, a lifting operation of a crane. Furthermore, a well-known rear leg suspension link 34 is provided between the front leg 30 and the rear leg 33 to maintain the relative angle formed by the front leg 30 and the rear leg 33 at a set angle (see FIG. 1, Patent Document (see 1).

As shown in FIG. 2, on the upper surfaces of the pair of left and right front legs 30, 30, a pair of left and right gantry lifting ladders 35, 35, a plurality of hanging parts (hanging ears) 36, and a mounting part 37 of the middle sheave block 26 are installed, respectively. It is provided. As shown in FIGS. 3 and 4, the gantry elevating ladder 35 includes a pair of vertical bars 35a, 35a provided parallel to each other along the longitudinal direction of the upper surface of the front leg 30, and a pair of vertical bars 35a, 35a. A plurality of horizontal bars 35b connecting the horizontal bars 35b, inner mounting arms 35c provided at multiple locations on the inner vertical bar 35a, and outer mounting arms 35d provided at positions corresponding to the inner mounting arms 35c on the outer vertical bar 35a. It is bolted to a bracket or screw seat provided on the peripheral wall of the front leg 30 via both mounting arms 35c and 35d.

When transporting such a pile driver 11, it is disassembled into a plurality of parts according to their mass and size, and each is loaded onto a transport vehicle such as a trailer. First, large components such as the leader 16, backstay 19, and counterweight 21 are removed from the upper revolving body 13. Then, the middle sheave block 26 is fixed to the mounting portion 37 with the fixing pin 38 with the gantry 22 laid down rearward and the front legs 30, 30 made substantially horizontal. As a result, the middle sheave block 26 is fixed to the lower end (the front end in the collapsed state) between the left and right front legs 30, 30 (FIG. 2), and at this time, the pendant rope 27 is appropriately wound up and attached to the gantry. 22 with little slack.

Here, in preparation for attaching and detaching the gantry 22, the undulating rope 24 is assembled into a shape suitable for transportation. Since the hoisting ropes 24 are assembled while they are placed in the gantry 22, it is efficient to take them out from the drum of the hoisting winch 23 in terms of ease of assembly. However, in order to collect the undulating ropes 24 that have been extracted from the drum, it is not only necessary to climb onto the gantry 22, but also requires the effort of fixing them with wires or the like. Therefore, for such processing of the levitation ropes 24, a levitation rope mount 39 is used which can safely and easily transport the levitation ropes 24.

As shown in FIGS. 1 to 4, the hoisting rope pedestal 39 hangs a portion of the hoisting rope 24 let out from the hoisting winch 23 (a plurality of pulleys 26a of the middle sheave block 26 and a plurality of pulleys 25a of the gantry sheave 25). It is a transportation jig that can store and transport the parts that are not rotated and can be handled integrally with the gantry 22, and is a bundled body (approximately a figure 8 in plan view A storage section 41 for storing a bundle (bundle) 40, a hanging section 42 for lifting, a front side attachment section 43 and a rear side attachment section 44 that are detachable from the gantry 22, and a handrail 45 for the gantry scaffolding. It is equipped with

The storage section 41 is formed in the shape of a bottomed frame large enough to accommodate the bundle 40, and has a substantially rectangular bottom plate 41a corresponding to the longitudinal direction of the gantry 22 and a pair of front, rear, left and right side plates 41b. Four support legs 41c are provided on the lower surface of the bottom plate 41a, and a plurality of (for example, six) support legs 41c are provided on the upper surface of the bottom plate 41a to hold the bundle 40 of the undulating ropes 24 on the inner surface of the side plate 41b. Guide plates are provided, and hanging portions (hanging ears) 42 are formed by providing hanging holes 42a at four locations on the front, back, left, and right sides of these plate pieces.

Each of the mounting parts 43 and 44 on the front side and the rear side has a symmetrical shape that forms a pair on the left and right that can be engaged with the pair of left and right gantry lifting ladders 35 and 35, and is attached to the outer surface of the side plate 41b of the storage part 41. Each is fixed. The front side attachment part 43 is a plate having a substantially inverted J shape when viewed from the side, and a tip protrusion 43a is recessed in the upper part of a bracket provided on the vertical bar 35a inside the gantry elevating ladder 35. The groove 35e is formed so as to be engageable with the engagement groove 35e. On the other hand, the rear side mounting portion 44 is a bifurcated bracket having a substantially inverted U shape when viewed from the side, and includes lower end portions 44a, 44a of two front and rear plates that sandwich the horizontal bar 35b of the gantry lifting ladder 35. , pin holes 44b, 44b into which the fixing pin 46 is inserted are provided.

In the following, a method of bringing the hoisting rope 24 into a transport state using the hoisting rope mount 39 will be described with reference to FIGS. 5 to 9. First, as shown in FIG. 5, in the upper revolving body 13, the gantry 22 is laid down rearward, and the front legs 30, 30 are brought into a substantially horizontal state. At this time, the middle sheave block 26 is fixed in advance to the front end of the gantry 22, and accordingly, the undulating rope 24 is arranged on the gantry 22 with its surplus length wound up by a predetermined amount.

Next, the prepared hoisting rope pedestal 39 is placed on the ground in alignment with the direction in which the hoisting rope 24 of the hoisting winch 23 is paid out. Specifically, the housing section 41 is placed on the ground with an interval in front and back such that the front end position of the storage section 41 is aligned with the position directly below the gantry sheave 25. In this state, while letting out the hoisting rope 24 rearward, a portion of the hopping rope 24 is placed on the hoisting rope mount 39 by hand. At this time, on the bottom plate 41a of the storage section 41, the bundled portion of the undulating rope 24 is sandwiched between a plurality of guide plates (hanging portions 42) and the side plate 41b, and forms a bundle 40 while maintaining an approximately figure-eight shape. It is stored in the storage section 41.

When the hoisting rope 24 that has been wound around the hoisting winch 23 is gone, the end of the hoisting rope 24 is removed from the drum of the hopping winch 23 and the portion of the hopping rope 24 is stored in the hopping rope mount 39 (not shown). shall be. Then, by the lifting operation of the crane using the hanging part 42, the undulating rope mount 39 is carried onto the gantry 22, and using the front side attachment part 43 and the rear side attachment part 44, it is placed between the front legs 30 and 30 of the gantry 22. Attach it in place. Thereby, the middle sheave block 26 and the undulating rope pedestal 39 are held in a stable state side by side on the gantry 22 (FIG. 2).

Here, in order to separate the gantry 22 from the upper revolving body 13, as shown in FIG. As shown in FIG. 9, pressure oil is obtained by connecting hoses 47 and 48 for hydraulic pressure supply to the pin coupling devices 29 and 32 of the front legs 30, 30 and rear legs 33, 33, respectively. Each operates in the pin removal direction. Thereby, the connection state between each leg 30, 32 and the upper revolving body 13 is released. Further, when the connection is released, the rear leg suspension link 34 is attached between the front leg 30 and the rear leg 33, and the rear leg 33 is held at a set angle with respect to the front leg 30.

The undulating rope pedestal 39, which can now be transported together with the gantry 22, is transported, for example, to the ground near the base machine 14 by the lifting operation of the crane, as shown in FIG. After the transport base 49 is attached to the legs 33, the transport base 49 is loaded in that state onto the platform of a transport vehicle. When the pile driver 11 is transported to the destination site, the reverse procedure to that described above is performed in the process of assembling the pile driver 11. That is, the hoisting rope 24 is taken into the hoisting winch 23 again, while the empty hoisting rope pedestal 39 is moved to a storage location provided at the site.

As described above, according to the present invention, the hoisting rope pedestal 39 can be attached to and detached from the gantry 22 , the bottomed frame-shaped storage section 41 that stores the portion of the hoisting rope 24 as a bundle 40 , the hanging section 42 for lifting, and the gantry 22 . Since it is equipped with possible attachment parts 43 and 44, it is now possible to collectively process the undulating ropes 24 on the ground, which conventionally required work at heights, and the subsequent crane transportation and attachment to the gantry 22, A series of operations such as separating and loading the gantry 22 can be carried out efficiently. That is, the undulating rope 24 can be brought into a transport state safely and easily. Moreover, since the bundle 40 of the undulating rope 24 is stored in a figure-eight shape in plan view, both ends of the rope are fixed, that is, one rope end is attached to the gantry 22 and the other rope is fixed. Even when the ends of the ropes are fixed to the hoisting winches 23, no unreasonable force is applied to the hoisting ropes 24, and a stable storage state can be obtained.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and various configurations of each part of the hoisting rope mount can be considered in consideration of transportability, and may be varied depending on the specifications of the gantry and the length of the hoisting rope. Changes may be made as appropriate. Furthermore, although the embodiments have been described using a pile driver as an example, the invention is not limited to this, and can be applied to other large construction machines equipped with a gantry.

11...Pile driver, 12...Lower traveling body, 13...Upper rotating body, 14...Base machine, 15...Leader bracket, 16...Leader, 17...Front jack, 18...Outrigger jack, 19...Backstay, 20...Outrigger Box, 21...Counterweight, 22...Gantry, 23...Luffing winch, 24...Luffing rope, 24a...Rope end, 25...Gantry sheave, 25a...Pulley, 25b...Spindle, 26...Middle sheave block, 26a...Pulley, 27... Pendant rope, 28... Front bracket, 29... Pin connecting device, 30... Front leg, 31... Rear side bracket, 32... Pin connecting device, 33... Rear leg, 34... Rear leg hanging link, 35... Gantry elevation ladder , 35a...Vertical bar, 35b...Horizontal bar, 35c...Inner mounting arm, 35d...Outer mounting arm, 35e...Engagement groove, 36...Hanging part, 37...Mounting part, 38...Fixing pin, 39...Luffing rope mount, 40... Bundle, 41... Storage part, 41a... Bottom plate, 41b... Side plate, 41c... Support leg, 42... Hanging part, 42a... Hanging hole, 43... Front side attachment part, 43a... Tip protrusion, 44... Rear part Side mounting part, 44a... Lower tip, 44b... Pin hole, 45... Handrail, 46... Fixing pin, 47, 48... Hose, 49... Transport pedestal

Claims (2)

It is used as a transportation jig for a construction machine, which is equipped with a gantry that is removably and removably installed on a revolving structure, and a hoisting winch that winds a hoisting rope. A hoisting rope mount that stores and transports a portion of the hoisting rope paid out from a hoisting winch,
a bottomed frame-shaped storage section that stores the undulating rope portion as a bundle made by going around the undulation rope multiple times;
A hanging part for lifting,
a mounting part that is detachable from the gantry;
An undulating rope trestle characterized by comprising: A method of using the undulating rope frame according to claim 1, comprising:
With the gantry laid down,
placing the hoisting rope pedestal on the ground in alignment with the direction in which the hoisting rope of the hoisting winch is paid out;
While letting out the undulating rope, storing the bundle in the storage part in a figure-eight shape in plan view;
removing the end of the hoisting rope from the drum of the hoisting winch;
attaching the undulating rope trestle to the gantry using the hanging part and the attachment part;
A method of using an undulating rope trestle, which is characterized by performing the following steps in order.

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