JP2010143706A - Hoisting tool device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hoisting tool device for accurately and easily performing slinging work or removal operation of a sling. <P>SOLUTION: This hoisting tool device is equipped in a lifting carrier, and carries a suspending cargo by fitting the sling installed on the suspending cargo to a hook of a hoisting tool, and includes a hook support frame 9 provided with a hook support bracket 14 and a sling send-out member 23 for rotatably journaling the hook on an end part, a push rod 10 vertically movably installed to the hook support frame 9 and moving upward by abutting on the suspending cargo, a cargo detecting member support frame 11 installed on the push rod 10 and provided with a connecting link 25 for rotating the hook, and a stopper 19 rotatably journaled by the hook support bracket 14 and opening-closing a hook opening part. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a lifting device for lifting and transporting a suspended load by attaching a sling attached to the suspended load to a hook of the suspended device in order to transport the suspended load.

Conventionally, in a lifting device provided with a hook for lifting a suspended load and a stopper for opening and closing the opening of the hook, one end of an arm for opening and closing the stopper is attached to the stopper and the other end is rotatably attached to a flange that moves up and down. By moving the flange upward with the tool of the manipulator, the arm rotates the stopper upward, opens the hook opening, slings the sling attached to the suspended load, or removes the sling from the hook. Such an open / close hook device is known. (See Patent Document 1)
Japanese Patent Laid-Open No. 10-157970

In the above-described conventional device, one end of an arm that operates opening and closing of a stopper that opens and closes the opening of the hook is attached to a vertically moving flange, and the hook is opened and closed via the arm by the vertical movement of the flange. Therefore, when slinging a sling attached to a suspended load on the hook or when removing the sling from the hook, the tip of the arm is moved by moving the flange upward against the spring force with the tip tool of the manipulator. , The stopper is turned upward, the opening of the hook is opened, the sling is slung over the opening of the hook, or the sling is removed from the hook. (See Patent Document 1, paragraph numbers [0004] to [0006])
When transporting hazardous materials such as waste and other pollutants and chemicals using a manipulator with a lifting device, maximum care is taken in handling the transported material, and it is possible even in a device that operates the lifting device. It is necessary to have as much safety technology as possible. As a means for this, there is a demand for a safe device that requires few operation steps, is easy to handle, and has few malfunctions in the operation of attaching or removing the sling to or from the hook.

  When the sling is hung on the hook or the sling is removed from the hook in the lifting / suspending process of the suspended load by the hanger device, the above-described conventional device uses the tip tool of the manipulator as described above. It requires an operation with a pressing process of pushing upward against the spring pressure, and is not necessarily suitable for safety technology as a device for transporting dangerous materials, and has many operation processes, and further requires attention to operation. Had problems.

The present invention solves the above-described problem, in a hanging device that transports a suspended load by engaging a sling attached to the suspended load with a hook of the hanging device,
A hook support bracket with a hook pivotally attached to the end, a hook support frame with a sling feed member installed, and a hook support frame that can be moved up and down and contacted with a suspended load. A push rod that moves to the push rod, a load detecting member support frame that is connected to the end of the push rod via a hook and a link mechanism, and has a connecting link that rotates the hook. A stopper that opens and closes the hook opening is provided, and the sling sling is pushed by the sling, the sling is slung on the hook, and the sling is removed from the hook. The load detection member support frame approaches the hook support frame by lowering the suspension after coming into contact with the suspended load, and hooks through the connecting link. The rotated, characterized in that so as remove the sling from the hook.

  Further, the hook support frame is provided with an elevating guide rod that is suspended from the hook support frame and guides the vertical movement of the load detection member support frame.

  In addition, the stopper includes a stopper positioning portion that abuts the hook support bracket at the top and defines a closed position with respect to the hook, and a biasing spring that constantly urges the stopper in a direction in which the hook positioning portion abuts the hook support bracket. It is characterized by that.

  In addition, a load contact plate that contacts the peripheral edge of the suspended load is provided at the lower end of the push rod.

  In the present invention, a hook and a stopper for opening and closing the hook are pivotally attached to a hook support bracket provided on the hook support frame, and the connection provided on the load detection member support frame that is movable up and down with respect to the hook support frame. Since the hook is configured to rotate via the link, the sling can be slung onto the hook by pushing the stopper with the sling during sling staking operation, and the push rod or loading door when removing the sling from the hook. After the contact part comes into contact with the suspended load, the hook is lowered, so that the hook can be rotated via the connecting link and the sling can be removed from the hook. Move the flange upward against pressure and rotate the stopper upward to open the hook opening. The sling can be slung or removed by a simple operation as described above, without requiring complicated and cautionary steps, so that the operation is accurate and simple, especially for carrying suspended loads by manipulator operations. It is suitable as a hanging device for pollutants such as waste and hazardous materials.

  In addition, since the promotion guide rod for guiding the vertical movement of the load detection member support frame is provided, horizontality is ensured when the load detection member support frame moves up and down, and sling slinging and removal operations can be performed accurately. .

  Further, since the stopper has a positioning portion that defines a closed position with respect to the hook, it is possible to prevent a malfunction such as opening of the stopper during conveyance.

  Embodiments of the lifting device according to the present invention will be described below with reference to the drawings.

  In the figure, 1 is a traveling rail, 2 is a trolley that travels on the traveling rail 1, 3 is a chain block having a load sheave (not shown) around which a load chain is wound, 4 is a trolley frame, and 5a is a load sheave. 3 is a load chain hanging from the main body, 5b is a load chain hanging from a sheave (not shown) provided in front of the trolley frame 4, 6 is a lower hook, and 7 is a frame to which the lower hook 6 is engaged.

  Next, the hanging device of the present invention will be described with reference to FIGS.

  In the figure, 8 is a main shaft rotatably supported by a frame 7 via a thrust bearing, 9 is a hook support frame fixed to the main shaft 8, and 10 is vertically moved with respect to the main shaft 8 and the hook support frame 9. A push rod 11, which can be suspended, is mounted on an upper portion of the push rod 10, and a load detection member support frame that moves up and down in synchronization with the push rod 10. A support frame raising / lowering guide rod for guiding the vertical movement of the support frame 11, 13 is a hook support bracket attaching portion installed at the lower peripheral edge of the support frame 11, and 14 is below the hook support bracket attaching portion 13. An installed hook support bracket, 15 is a hook pivotally attached to the lower end of the hook support bracket 14, and 16 is the hook support. A guide body that is attached to the lower part of the ram 9 and engages with the lifting guide 12, 17 is a stopper provided at the lower end of the lifting guide rod 12, and 18 is a load installed at the lower end of the push rod 10. It is a contact part.

  A stopper 19 is pivotally attached to the lower part of the hook support bracket 14 so as to be openable and closable. A notch part 20 through which the tip of the hook 15 is inserted is provided at the lower part. Reference numeral 21 denotes a stopper positioning portion provided at the upper end of the stopper 19, which is urged so as to be always joined to the hook support bracket 14 by the urging force of the urging spring 22, and the stopper 19 closes the hook 15. The position of the stopper 19 is defined so that the stopper 19 does not open.

  22 is provided at the lower end of the hook support bracket 13 and urges the positioning portion 21 of the stopper 19 to be always joined to the hook support bracket 14, and in the load lifting state shown in FIG. An urging spring for urging so as to close the front end of the hook, 23 is a sling feed metal fitting installed at the lower end of the hook support frame, and 24 is a connecting member support bracket installed at the peripheral edge of the lower end of the load detection member support frame 11. 25, one end of which is pivotally attached to the connecting member support bracket 24, and the other end is hook-attached to a connecting link 26 attached to the hook 15, and 27 is fitted between the hook support brackets 14. A hook support shaft that pivotally supports the hook 15.

  Reference numeral 28 denotes a suspended load, 29 a sling for carrying a suspended load, 30 a suspension ring provided at an end of the sling, 31 a turntable, and 32 a manipulator.

  As described above, in the suspension device of the present invention, the hook 15 and the stopper 19 are pivotally attached to the hook support bracket 14, and the stopper 17 is always positioned by the urging spring 22 as shown in FIG. Is urged in a direction to join the hook support bracket 14 and is positioned at a position to close the opening of the hook 15. The push rod 10 is attached to the hook support frame 9 provided with the hook support bracket 14 so as to be movable up and down, and the load detection member support frame 11 attached to the push rod 10 is connected to rotate the hook 15. A link 25 is provided.

  As will be described later, when the sling 29 is slung on the hook 15, the stopper 17 is pushed by the suspension ring 30 and rotates in the direction indicated by the arrow B in FIG. . Further, at the time of the operation of removing the sling 29 from the hook 15, only the hook 15 rotates, and the stopper 19 is configured not to rotate as shown in FIG.

  Next, the operation of the present embodiment will be described.

  FIG. 2 shows the operating state of the hook 15, the stopper 19, and the connecting link 25 in a state where the suspended load 28 is lifted by the lifting tool.

  FIG. 3 shows the operating state of the hook 15, the stopper 19, and the connecting link 25 during the operation of hanging the suspension ring 30 provided on the sling 29 on the hook 15.

  FIG. 4 shows the operating state of the hook 15, the stopper 19 and the connecting link 25 in a state where the sling 29 is removed from the hook 15.

  During the sling operation of the suspension ring 30 shown in FIG. 3, the suspension ring 30 is pressed against the stopper 19 by a manipulator 32 described later, and the stopper 19 is rotated in the direction of FIG. 5B against the urging force of the urging spring 22. When the hanging ring 30 is slung on the hook 15 and the slinging is finished, the stopper 19 is configured to return to the position shown in FIG.

  When the suspension ring 30 is removed from the hook 15 shown in FIG. 4, as will be described later, after the suspended load 28 is transported to a predetermined position, the load contact portion 18 provided on the push rod or the push rod is moved to the upper end of the suspended load 28. When the push rod 10 is further pressed down by a predetermined amount, only the hook support frame 9 to which the hook 15 is attached is lowered while the push rod 10 is stopped, so that the load detection member support frame 11 and the hook support frame 9 are equivalent. The position approaches, the hook 15 rotates to the position shown in FIG. 4 via the connecting link 25, and the suspension ring 30 is pushed out by the sling feed bracket 23, and the suspension ring 30 is removed from the hook 15. ing.

  Next, the lifting / suspending operation of the suspended load will be described with reference to FIGS.

  FIG. 6 shows a state in which the suspension is transported directly above the suspended load 29 placed on the turntable 30 and the suspension is lowered to the lifting position by the load chain. Two slings 29 a and 29 b for lifting the suspended load 29 are attached to the suspended load 28. Moreover, the suspension ring 30 engaged with the hook 15 is provided at both ends of each sling.

  Next, in FIG. 7, the manipulator 32 grasps the suspension ring 30 a at one end of the sling 29, lifts it onto the hook 15, presses it against the stopper 19, and rotates the stopper 19 to open the mouth of the hook 15. Then, the suspension ring 30a is hung on the hook 15. When the suspension ring 30a is slung on the hook 15, the stopper 19 is rotated to the position shown in FIG.

  Next, in FIG. 8, when the turntable 31 is rotated by 90 ° with the suspension ring 30a being hung on the hook 15, the suspension is also rotated following the rotation of the turntable 31, as shown in FIG. The manipulator hangs the second suspension ring 30b on the hook 15 in the same procedure as the first suspension ring 30a, and suspends all the suspension rings 30 provided at both ends of the two slings 29 on the hook 15, as shown in FIG. Thus, the lifting tool is lifted and conveyed to a predetermined position shown in FIG. In FIG. 11, when the hanging tool is further lowered after the hanging tool 28 is placed at a predetermined position, the push rod 10 or the load contact portion 18 provided at the tip of the push rod 10 is attached to the hanging load 28. When it is brought into contact with the upper end and further pushed down by a predetermined amount, the push rod 10 remains stopped and the hook support frame 9 to which the hook 15 is attached is lowered, so the load detection member support frame 11 and the hook support frame As the relative position of 9 approaches and the hook support frame 9 descends, the hook 15 rotates to the position shown in FIG. 4 via the connecting link 25, and the suspension ring 30 is pushed out collectively by the sling delivery fitting 23. The sling 29 falls off the hook 15 due to its own weight, and the removal operation of the suspended load 28 is completed.

  In the above-described embodiment, the load contact portion 18 is determined by the shape of the upper surface of the suspended load 28. Further, if there is a contact portion on the upper surface of the suspended load 28, it is sufficient to provide only the push rod without providing the load contact portion.

1 is an overall schematic diagram of a lifting device according to the present invention. The enlarged front view of the hanging device with the sling attached to the hook. The enlarged front view of the hanger apparatus of the state which hangs sling on a hook. The enlarged front view of the hanger apparatus of the state which removes a sling from a hook. (A) is an enlarged side view of a hook part, (b) is a front view. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device. Explanatory drawing which shows the operation process which removes a sling from the operation process of slinging a sling on a lifting device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Hook support frame 10 Push rod 11 Load detection member support frame 12 Lifting guide rod 13 Hook support bracket attaching part 14 Hook support bracket 15 Hook 16 Guide body 17 Stop part 18 Load contact part 19 Stopper 20 Notch part 21 Positioning part 22 Biasing Spring 23 Sling Delivery Metal 24 Connection Member Support Bracket 25 Connection Link 26 Hook Connection Member 27 Hook Support Shaft 28 Suspended Load 29 Sling 30 Suspension Ring 31 Turntable

Claims (4)

In a suspension device with a hook that hangs a sling that hangs on a hoisting machine and lifts a suspended load,
A hook support bracket with a hook pivotally attached to the end, a hook support frame with a sling feed member installed, and a hook support frame that can be moved up and down and contacted with a suspended load. A push rod that moves to the push rod, a load detecting member support frame that is connected to the end of the push rod via a hook and a link mechanism, and has a connecting link that rotates the hook. A stopper that opens and closes the hook opening is provided, and the sling sling is pushed by the sling, the sling is slung on the hook, and the sling is removed from the hook. The load detection member support frame approaches the hook support frame by lowering the suspension after coming into contact with the suspended load, and hooks through the connecting link. The rotated, hanger device being characterized in that so as to remove the sling from the hook.   The suspension device according to claim 1, wherein the hook support frame is provided with an elevating guide rod that is suspended from the hook support frame and guides the vertical movement of the load detection member support frame.   The stopper is provided with a stopper positioning portion that abuts the hook support bracket at the top and defines a closed position with respect to the hook, and a biasing spring that constantly urges the stopper in a direction in which the hook positioning portion abuts the hook support bracket. The hanging device according to claim 1 or 2, characterized by the above.   The suspension device according to any one of claims 1 to 3, wherein a load abutment plate that abuts a peripheral portion of the suspended load is provided at a lower end of the push rod.