JP2009196675A - Crane lifter transport trestle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crane lifter transport trestle for safely and efficiently removing or transporting a crane lifter which hangs and transports an item (steel plate coil or the like) from a crane hook for checking, repairing, or the like. <P>SOLUTION: This crane lifter transport trestle includes a lifter seat 2 and a horizontal base stand 4. The seat 2 has a seat part 22 and a backrest part 23 and is supported on the stand 4 able to tilt and move between a vertical position VP and a horizontal position HP. The bottom of a body frame 61 of the crane lifter 6 suspended by a crane hook is seated on the seat part 22 of the seat 2 fixed at the position VP and the seat 2 is tilted to be in a supine attitude roughly in parallel with the stand 4. The trestle is transported to a predetermined position for checking, repairing, or the like by an appropriate transport unit (rail car, truck, or the like) after the crane lifter is placed in the supine attitude. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a crane lifter transportation stand that can perform a crane lifter transportation work for removing a crane lifter from a crane hook and transporting the crane lifter to a predetermined place for inspection and repair.

In production lines that handle articles such as steel strip coils, crane lifters (also called tongs) are widely used as means for suspending and transporting the articles.
As shown in FIG. 10 (side view) and FIG. 11 (front view), the crane lifter includes article holding arms (63, 63) connected to the link mechanism (62) on the left and right sides of the main body frame (61). ing. The body frame (61) is provided with a motor (65) and a screw rod (66) connected to the motor (65), and the base end portion of the link mechanism (62) is connected to the screw rod (66) via the connecting member (67). Is engaged. As shown in FIG. 12, the article holding arms (63, 63) are moved by the relative movement of the link mechanism (62) accompanying the rotation (forward / reverse rotation) of the screw rod (66) by the motor (65). An opening / closing operation is performed between an open state (shown by a solid line) wider than the width size (illustrated by a steel strip coil) and a closed state (shown by a chain line) holding the article (W) from both sides. The crane lifter (6) is suspended from the crane hook (CH) via a crane hook engaging portion (7) connected to the top of the main body frame (61), and moves up and down and moves in the horizontal direction.

The crane lifter (6) is used so that the work of transporting the article by the crane lifter (6) [the article (W) is lifted by the holding arms (63, 63) and unloaded to a predetermined place and unloaded] is performed safely and reliably. A large number of various sensors and control devices are incorporated in the main body frame (61) and the article holding arms (63, 63).
There are various sizes and weights of the crane lifter (6). To give specific examples of lifters for carrying steel strip coils, the height [from the lower edge of the article holding arm (63, 63) to the main body frame (61) The height to the upper edge (excluding the crane hook engaging portion 7 at the top) is about 4 to 5 m, and the weight (weight excluding the crane hook engaging tool 7 at the top) is about 2 to 3 tons. It is a large-sized heavy object.

JP 2000-355482 A Japanese Utility Model Publication No. 57-116682

The crane lifter (6) is removed from the crane hook (CH) when carrying out periodic inspections or repairing problems that occur suddenly, and is inspected and repaired from the work yard with a transport vehicle (track carriage, truck, etc.). Sent to factories. Like the steel strip coil transporter, the lifter 6 having a high height and a large weight is placed on a transport vehicle in a horizontal position and transported for safety of transport work.
High skill is required for the crane operation for placing the vertical lifter (6) suspended on the crane hook (CH) in a horizontal posture on the carrier bed. The crane lifter (6) is equipped with many sensors and control devices as described above, so more careful crane operation and slinging work are required to prevent damage to these devices due to impact. Is done.

The work of placing the crane lifter (6) on the transport vehicle requires careful and slow handling in order to ensure the safety of the crane work and to protect the various devices installed in the lifter (6) as described above. For this reason, the work required time (crane restraint time) is relatively long, and as a result, this is a major factor that impedes crane operation efficiency. In addition, although the work is carried out under careful and slow operation, it is not possible to reliably avoid the impact applied to the lifter (6) (which may cause damage to various devices installed in the lifter). Not easy.
The present invention has been made for the purpose of solving the above-mentioned problems relating to the conveyance of the crane lifter (6).

The crane lifter carrier of the present invention is
A crane lifter transportation stand used when transporting a crane lifter in which a pair of left and right article holding arms are connected to a main body frame so as to be openable and closable to an inspection and repair work place,
The lifter seat (2) and the horizontal base (4) consist of a lifter seat (2) having a seat (22) and a backrest (23), and a vertical position relative to the horizontal base (4). The seat of the lifter seat (2), which is supported on the horizontal base (4) and can be tilted between the horizontal position (HP) and the vertical position (VP) 22), the bottom of the main frame (61) of the crane lifter (6) suspended from the crane hook is seated, and the lifter seat (2) is tilted to be substantially parallel to the horizontal base (4). It is configured to be in a supine posture.
The transportation platform is transported to a predetermined place for inspection / repair by an appropriate transportation means (railway vehicle, truck, etc.) after the crane lifter is placed in a supine posture.

In the present invention having the above-described configuration, the crane operation for allowing the crane lifter (6) in the vertical posture suspended from the crane hook (CH) to be seated on the lifter seat (2) in the vertical position (VP) is easy. By tilting from the vertical position (VP) to the horizontal position (HP), the crane lifter (6) can be in a stable supine posture suitable for conveyance.
Since both the operation of sitting the crane lifter (6) and the tilting operation of the lifter seating base (2) can be easily performed, the restraint time of crane operation required for the crane lifter (6) unloading work is required. This shortens the crane operation efficiency.
In addition, since the work process in which the crane lifter (6) is seated on the lifter seat (2) and tilted to the horizontal position (HP) is smoothly performed, the impact on the crane lifter (6) (and to it) (The damage of various sensors and devices) is effectively avoided.

FIG. 1 and FIG. 2 show specific examples (FIG. 1: front view, FIG. 2: side view) of a transportation platform (1) of a crane lifter (hereinafter also referred to as “lifter”). The lifter carrier (1) includes a lifter seat (2) and a horizontal base (4) that supports the lifter seat (2).
The lifter seat (2) has a seat part (22) and a backrest part (23) using a pair of frames (21, 21) facing left and right as columns. The horizontal base (4) includes a frame (43, 43), a frame (45, 45), and the like that support the floor frame (41) and the lifter seat (2). Each of (45, 45) is located on one end side of the floor frame (41) and is erected on both the left and right sides of the floor frame (41).

A shaft pin (44, 44) serving as a tilting fulcrum of the lifter seating base (2) is provided on the upper end side of one support frame (43, 43) erected on the horizontal base (4). Fixing pins (46, 46) for temporarily fixing the lifter seat (2) to the vertical position (VP) are detachably attached to the upper end side of the other support frame (45, 45). .
The shaft pins (44, 44) of the support frame (43, 43) are engaged with the leg frames (24, 24) of the lifter seat (2), and the lifter seat (2) is pivoted by the engagement structure. The pins (44, 44) are pivotally supported on the support frame (43, 43) with the tilting fulcrum as a tilting fulcrum.

3 and 4 show a state in which the lifter (6) is placed on the lifter transporting base (1) [FIG. 3: front view, FIG. 4: side view, both drawings from the lifter (6)] The crane hook engaging tool (7) is shown in a removed state]. The lifter seat (2) has a shaft pin (44, 44) between a vertical position (VP) relative to the horizontal base (4) and a horizontal position (HP) oriented parallel to the horizontal base (2). Tilt around the fulcrum.
The operation of seating the lifter (6) on the lifter seat (2) is performed with the lifter seat (2) held in the vertical position (VP). The lifter (6) is seated on the seat (22) of the lifter seating base (2) with the bottom surface (611) of the main body frame (61) as a seating surface. At this time, the vertical position (VP) of the lifter seat (2) is fixed by the fixing pins (46, 46). After the lifter (6) is seated, the fixing pins (46, 46) are removed, and the lifter seat (2) is tilted to the horizontal position (HP).

  A series of operations in which the lifter (6) suspended from the crane hook (CH) is seated on the seat (22) of the lifter seat (2), and then the lifter seat (2) is tilted to the horizontal position (HP). Is performed by a cooperative operation between the crane operation and the ground worker's slinging operation. The lifter seat (2) is provided with arms (25, 25), work decks (31, 31) and other accessory parts so that this series of work operations can be performed smoothly.

  The arms (25, 25) are positioned on the upper end side of the backrest portion (23) of the lifter seat (2), and are attached to the left and right column frames (21, 21) in pairs. A chain hook (26, 26) is provided at the tip of 25). After the lifter (6) is seated on the lifter seat (2), the chain (27) is hung on the chain hooks (26, 26) and (26), and the upper part of the lifter (6) is connected to the backrest part (23). Surrounded by arms (25, 25) and chain (27). As a result, the balance of the sitting posture of the lifter (6) may be lost due to some sort of slack in the crane operation process [work process of removing the crane hook (CH) and the hook engaging portion (7), etc.]. Even if it exists, troubles such as a rollover of the lifter can be prevented. The box-like body (30) (FIGS. 1 and 2) attached to the side of the arm (25, 25) is a cable attached to the lifter (6) (power cable, communication cable, etc., not shown) It is a box which accommodates the front-end | tip part.

Further, hanging arms (28, 28) are attached to the arms (25, 25). After the lifter (6) is seated on the lifter seat (2) in the vertical position (VP), when the lifter seat (2) is tilted to the horizontal position (HP) with a crane, the hooks (28, 28) A hanger (81) such as a wire or a chain is hung on (see below).
Furthermore, work decks (31, 31) are provided on the left and right sides of the upper end side of the lifter seat (2). Lifting the crane hook (CH) from the lifter (6) seated on the lifter seat (2), hanging the chain (27) on the arms (25, 25), lifting the lifter seat (2) to the vertical position (VP ) From the ground to the horizontal position (HP), etc. (described later) requires the assistance of ground workers (guide guidance of the crane, sling, etc.). In the case of a high-lifter (6) (for example, about 3 to 4 m in height), such as a steel band coil carrier lifter, the work deck (31) can be used to ensure the safety and smoothness of work. Go up and do the necessary care.

A ladder (L) (shown by a chain line in FIG. 3) is used for raising and lowering the worker on the work deck (31). The work deck (31) may be only on one side of the lifter seat (2), but the figure is attached to both sides of the support frame (21, 21) so that the operator can access from either the left or right side. An open / close bar (32) is provided on the handrail side of the work deck (31) to prevent the operator from falling. The open / close bar (32) is rotated by an operator's hand with one end as a fulcrum (arrow R in FIG. 2), opened when the operator moves up and down (indicated by a chain line), and closed during the operation ( Solid line display).
A lifter receiving member (29) is provided on the backrest (23) of the lifter seat (2). The receiving member (29) carries the lifter (6) from the back side when the lifter seat (2) is tilted to the horizontal position (HP), and maintains a stable supine posture of the lifter (6). It is a sleeper. The receiving member (29) is stretched over the left and right support frames (21, 21) and fixed. In the figure, the receiving members (29 ₁ , 29 ₂ ) are attached to two positions of the backrest portion (23), but the attachment position and number are appropriately set according to the shape and size of the lifter (6).

  On the horizontal base (4), a weir frame (42) is erected on one end side of the floor frame (41) [on the opposite side to the installation position of the support frame (43), 45). The lifter (6) seated on the lifter seat (2) is placed between the weir frame (42) and the seat (22) by the tilt of the lifter seat (2), and is placed on the horizontal base (4). Parallel supine postures (FIGS. 4 and 9). As a result, it is possible to prevent troubles such as a slippage of the lifter (6) from the carrier (1).

The floor frame (41) of the horizontal base (4) is provided with a band hanging bracket (47) and a hanging bracket (49). Both the band hanging bracket (47) and the hanging bracket hanging bracket (49) are attached to the left and right sides of the floor frame (41).
A band for securing the supine posture by tying the lifter 6 in the supine posture to the horizontal base 4 is attached to the band hanging bracket 47 (described later). On the other hand, a hanging tool (wire or the like) for lifting the transportation platform (1) with a crane is attached to the hanging tool hanging bracket (49) (described later).

Next, placement and transportation operation of the crane lifter on the transportation platform will be described with reference to FIGS.
First, when placing the lifter (6) on the lifter carrier (1), as shown in FIG. 5, the lifter seat (2) is rotated to the vertical position (VP), and the fixing pin of the support frame (45) is fixed. The vertical posture position (VP) is fixed at (46). Then, the lifter (6) suspended from the crane hook (CH) is moved (arrow A) toward the lifter seat (2), and as shown in FIG. ) Is seated on the seat portion (22) as a seating surface.

  The lifter (6) is seated on the seat (22), the chain (27) is passed over the arms (25, 25) of the backrest (23), and then the crane hook (CH) is removed. FIG. 6 shows an example in which the crane hook engaging portion (7) at the top of the lifter is also removed together with the crane hook (CH). After that, as shown in FIG. 7 (I: side view, II: front view), the tilting hanger (81) (wire, chain, etc.) is attached to the hanger hanger (28, 28) of the arm (25, 25). ) And engage the crane hook (CH). These operations are carried out by the operator on the work deck (31).

The tilting suspension (81) engaged with the crane hook (CH) is held in an appropriate tension state by the crane operation, and the fixing pins (46, 46) of the support frame (45, 45) are pulled out to lift the lifter seat. Make (2) tiltable. Next, the lifter seat (2) is tilted to the horizontal position (HP) with the shaft pins (44, 44) as fulcrums by crane operation. The lifter (6) on the lifter seat (2) that has been moved to the horizontal position (HP) is placed between the seat (22) of the lifter seat and the weir frame (42) of the horizontal base and received. A stable supine posture held on the members (sleepers) (29) (29 ₁ , 29 ₂ ) is maintained (FIG. 8).

After the lifter seating base (2) is moved to the horizontal position (HP), the lifting device for tilting (81) is removed, and the band hanging tool (47) of the floor frame (41) of the horizontal base as shown in FIG. A band (48) is hung on and the lifter (6) is fastened to the horizontal base (4) together with the lifter seat (2). Thereby, the supine posture of the lifter (6) is fixed.
Next, suspenders (chain, wire, etc.) (82) are hung on the hanging brackets (49) (49 ₁ , 49 ₂ ) of the floor frame (41), and the lifter transport platform (1) is secured with a crane hook (CH). Is lifted and placed on the carrier of the transport vehicle (not shown). If the transport platform (1) is previously placed on the platform of the transport vehicle, it is transported to the inspection and repair factory. If the inspection / repair factory is within the crane travel range of the same work yard (building), the transport platform (1) can be lifted on the crane hook (CH) and transported to the inspection / repair factory by crane travel. A transport vehicle is not required.

  Inspection and repair of the lifter sent to the inspection / repair factory should be carried out in a horizontal supine posture on the transportation platform (1) without unloading the lifter (6) from the transportation platform (1). Can do. This is because it is easy for an operator or the like to access the main body frame (61) and the article holding arms (63, 63) in this state.

  The lifter (6) that has been inspected and repaired is returned to the original work yard even if the lifter (6) is tied to the horizontal base (4) with the band (48) in the same manner as when it was sent. The work of returning the lifter (6) of the transportation platform (1) returned to the original work yard to the crane hook (CH) is performed by placing the lifter (6) on the transportation platform (1). The work procedure (FIGS. 5 to 9) may be reversed. First, the lifting device (82) and the band (48) are removed, and the lifting device (81) is hung on the arm (25, 25) of the lifter seat (2) and engaged with the crane hook (CH) (see FIG. 8).

  Next, the lifter seat (2) is tilted from the horizontal position (HP) to the vertical position (VP) by crane operation, and fixed to the vertical position (VP) by the fixing pin (46) (FIGS. 7 and 6). Next, the chain (27) is hung on the tip of the arm (25, 25), and the tilting hanger (81) is removed. Further, a crane lifter engaging portion (7) is connected to the top of the main body frame (61) of the lifter (6), and a crane hook (CH) is hooked on the crane lifter engaging portion (7) and lifted from the lifter seat (2) (FIG. 5). These series of operations can be efficiently performed by the assistance of ground workers and crane operation. Thus, the lifter (6) suspended from the crane hook (CH) is put into the work of transporting articles such as steel strip coils.

ADVANTAGE OF THE INVENTION According to this invention, the operation | work which removes a crane lifter from a crane hook for inspection repair etc., and can carry out from a work yard can be performed safely and efficiently.
Since the crane lifter is transported in a stable supine posture, transport work is also easy. Construction such as inspection and repair of the crane lifter can also be carried out under the supine posture placed on the transportation platform. Furthermore, the work operation when returning the crane lifter to the original work yard and returning it to the original material transportation work can be carried out efficiently and in a short time. The crane operation time (crane restraint time) is reduced, and the crane operation efficiency in the work yard is improved.
The present invention is extremely useful as means for removing and lifting a crane lifter from a crane hook for inspection and repair in various manufacturing factories. From the viewpoint of enhancing the efficiency and protecting various sensors and devices attached to the crane lifter, it has a great industrial value.

Front view of transfer platform Side view of transport platform Front explanatory view showing the lifter mounting state Side surface explanatory view showing the state of placement of the lifter Explanatory drawing of lifter placement operation on transfer platform Explanatory drawing of lifter placement operation on transfer platform Explanatory drawing of lifter placement operation on transfer platform (I: side view, II: front view) Explanatory drawing of lifter placement operation on transfer platform Explanatory drawing of lifter placement / transport operation on transport platform Side view of lifter Front view of lifter Schematic explanatory diagram of opening and closing operation of lifter article holding arm

Explanation of symbols

1: Lifter transport base 2: Lifter seat 21: Post frame 22: Seat 23: Backrest 24: Leg frame 25: Arm 26: Chain hanging bracket 27: Chain 28: Hanging bracket 29 for tilting 29 ₁ , 29 ₂ ): Receiving member (sleeper)
30: Cable tip storage box 31: Work deck 32: Opening / closing bar (for fall prevention)

4: Horizontal base 41: Floor frame 42: Weir frame 43: Support frame 44: Shaft pin (tilting support shaft of lifter seat)
45: Support frame 46: Fixing pin 47: Band hanging bracket 48: Band 49 (49 ₁ , 49 ₂ ): Suspension bracket hanging bracket for the carrier

6: Crane lifter 61: Main body frame 611: Bottom surface of main body frame
62: Link mechanism 63: Article holding arm 64: Lifter control panel 65: Drive motor 66: Screw rod 67: Connecting member
7: Crane hook engaging part 81: Tilt lifting device 82: Transfer platform lifting device

W: Article to be transported (steel strip coil, etc.)
CH: Crane hook L: Ladder VP: Vertical position HP: Horizontal position

Claims (1)

A crane lifter transportation stand used when transporting a crane lifter in which a pair of left and right article holding arms are connected to a main body frame so as to be openable and closable to an inspection and repair work place,
The lifter seat (2) and the horizontal base (4) have a seat portion (22) and a backrest portion (23), and a vertical position relative to the horizontal base (4) ( VP) and the horizontal position (HP) are supported by the horizontal base (4) so as to be able to tilt, and the seat (22) of the lifter base (2) fixed at the vertical position (VP) ), The bottom of the main frame (61) of the crane lifter (6) suspended from the crane hook is seated, and the lifter seat (2) is tilted so that it is substantially parallel to the horizontal base (4). A crane lifter transportation stand configured to be in a posture.

Images