JP2005289533A - Lifting attachment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem on a conventional lifting attachment using a crane with a pendant switch or a crane with a cylinder switch that a hand may held between adjacent cargoes or the like when the cargo greatly oscillates because the lifted cargo is positioned while being held with one hand. <P>SOLUTION: The lifting attachment comprises a frame 1 whose upper end is anchored to a lifting carrier and whose lower part is provided with a pair of lifting fittings to be anchored to the lifted cargo and operating means for operating the lifting carrier and the lifting fitting. The lifting fittings have at least one movable fitting 4, and an adjustment fitting 3 having an adjustment means correcting the anchoring position of the lifting fittings and the lifted cargo. The operation means are grips having operation switches 13, 14 which are provided at the both ends of an arm 10 extended from the frame 1, and operates the actuation of the lifting carrier and the movable fitting 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lifting device that lifts and conveys a suspended load such as an automobile engine via a lifting and lowering conveying device such as a crane.

  Conventionally, when lifting and transporting an automobile engine or the like, as shown in FIG. 6, a hook 43 of a crane 42 with a pendant switch 41 is attached with a hanging tool that opens and closes a chuck portion 44, or as shown in FIG. A hanging device in which a hanging tool that opens and closes the chuck portion 44 is attached to a hook 43 of a crane 46 with a cylinder type switch 45 has been used.

  However, when the crane 42 with a pendant switch is used, the pendant switch 41 is operated with one hand, so that the suspended load must be positioned by holding the suspended load with only one hand. In addition, when the swing of the suspended load is large, there is a risk that a hand may be caught between adjacent loads due to the swing of the suspended load.

  In addition, when the crane 46 with the cylinder type switch is used, since the position is adjusted in the rotation direction of the suspended load with one hand, the suspended load is held by holding the suspended load with one hand in the same manner as the crane 42 with the pendant switch. There is a risk that a hand may be caught between the opening / closing part of the hanging tool and the hanging ear of the hanging load.

  In addition, since the pendant switch has a large number of push buttons, it is necessary to change the pendant switch to operate when pushing the switch at a remote position, and one hand must hold the suspended load. The operation was complicated and required skill. Note that the above-described prior art is a well-known technique, and no prior literature is shown.

  As described above, in the conventional suspension device using a crane with a pendant switch or a crane with a cylinder switch, the load is positioned by holding the load with only one hand. There is a risk that a hand may be caught between adjacent loads, and there is a risk that a hand will be caught between the opening and closing part of the hanging tool and the hanging ear of the suspended load. Therefore, there is a problem that the operation is complicated and the operation requires skill.

  SUMMARY OF THE INVENTION The present invention solves the above-described problem, and includes a frame having a pair of hanging hooks whose upper end is engaged with the lifting and lowering conveying device and engaged with a suspended load at the lower part, and an operating means for operating the lifting and lowering conveying device and the hanging canag The suspension device has an at least one movable device and an adjusting means for correcting the engagement position between the suspension device and the suspended load, and the operation device has an arm extending from the frame. It is a grip provided with operation switches which are provided at both ends and which operate the lifting and lowering conveying device and the movable hook.

  In addition, the hanging canag is a movable canag that rotates between an open position and a closed position, and an adjustment canag that rotates within a certain regulation range, and the adjustment canag is associated with the suspended load. It has an urging means for urging on the wearing side. In addition, the movable canag has an urging means for urging the canag to the side that is engaged with the suspended load.

  According to the present invention, grips having operation levers are provided at both ends of an arm extending from the frame, and by operating the operation levers, it is possible to perform the lifting / lowering operation of the lifting / lowering conveying device and the opening / closing operation of the movable hook. The suspended load can be transported safely and easily without touching the suspended load. In addition, the hanging suspension has an adjustment means for correcting the position where the suspended suspension and the suspended load are attached. Engagement between the suspension and the suspended load can be ensured. Further, by making the adjusting means a means for regulating the rotation range of the suspension, the engagement between the suspension and the suspended load can be achieved by simple means. In addition, it is possible to provide a suspension device that can be ensured and that can easily attach and detach a suspended load and has high workability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings (Embodiment 1).
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.

  1 is an overall front view showing a hanging device of the present invention, FIG. 2 is an enlarged side view of the hanging device, FIG. 3 is a plan view of FIG. 2, and FIG. It is the operation | movement schematic which shows an engagement operation | movement.

  In the figure, reference numeral 1 denotes a plate-like frame, which is provided with a suspension hook 2 attached to a hook such as a crane at the upper end, and an adjustment hook 3 and a movable hook 4 engaged with a load 23 at the lower part. 2 is fixed to the upper end of the frame 1, and a suspension hook for engaging a hook such as a crane 3 is attached to the hinge shaft 5 of the flange 1 a provided at one end of the frame 1 and is suspended and provided on the suspended load 23. Adjustment hooks 4 having an opening 3a that engages with an engagement part 24 such as a hook or the like, 4 is a lower part of the frame 1 and hangs on the opposite side of the adjustment hook and rotates around a rotation shaft 4d provided on the frame 1. An opening 4a that engages with an engagement portion 24 provided on the suspended load 23, a circular base portion 4b that is pivotally supported by the rotary shaft 4d, and a circumference of the base portion 4b. The to-be-detected part 4c provided in is provided. A shaft 6 is provided below the flange 1a so as to protrude from the frame 1 in the same direction as the flange 1a. The shaft 6 is inserted into the insertion hole 3b of the adjustment hook 3 and a nut 7 is provided at the tip of the shaft 6. ing. Further, a spring 8 is wound around the shaft 6 between the nut 7 and the adjustment hook 3, and the adjustment hook 3 is constantly urged toward the side where the suspended load 23 is engaged, that is, the frame 1 side. Hold and hang down. Note that a collar 6a is interposed between the adjustment flange 3 and the end of the frame 1 so as to restrict the rotation of the adjustment flange 3 in the time direction (FIG. 2). The adjustment hook 3 can be rotated by a certain angle against the urging force of the spring 8 on the right side of FIG. This angle is the restricted rotation range of the adjustment canug 3.

  Further, limit switches 9a and 9b for detecting the detected portion 4c of the movable canag 4 are provided on the movable canag 4 side of the frame 1. The limit switch 9a detects the closed position of the movable canag 4, and the limit switch 9b Detect open position. The movable canag 4 is closed from the open position by inserting the opening 3a of the adjusting canag 3 into the engaging portion 24 of the suspended load 23 and then operating the operation switch 14 described later to operate the canag operating motor 4e. The opening 4a of the canag 4 is inserted into the engaging portion 24 of the suspended load 23. The movable canug 4 can be manually operated. Reference numeral 10 denotes a lower part of the frame, which extends downward from the frame 1 and is fixed to the lower part of the frame 1. An operation handle 11 is provided on the arm 10, and an operation grip 12a is provided at both ends of the handle 11. , 12b. 12a is an operation grip provided with an interlock switch 13 for interlocking an operation switch 14 for operating a crane or the like, and 12b is an operation grip provided with an operation switch 14 for operating a crane up and down and an opening / closing operation of the movable hook 4. Thus, the intervals between the operation grips 12a and 12b are adjustable. Reference numeral 17 denotes a position detection rod which is suspended from the center of the adjustment canag 3 and the movable canag 4 below the frame 1 and is provided so as to be movable up and down with respect to the frame 1. 15 is fixed to the upper end of the position detection rod 14. An object to be detected for detecting the position of the vertical movement of the rod 14, 16 is a limit switch for detecting the position, and 17 a is a pad provided at the lower end of the position detection rod 14 and abutting against the suspended load 23. The detected object 15 includes a parallel portion 15a provided at a constant length in the center portion and inclined portions 15b at both ends. The operation switches 13 and 14 are provided on the upper surface of each grip so that the operator can hold the grips 12a and 12b with the palm of the hand and operate with the thumb during operation. In the state where there is no load in which the hanging tool is not engaged with the hanging load, and in the state where the movable hook 4 is open, the hanging device moves down at the rated speed, and the pad 17a of the position detection rod 17 is attached to the hanging load 23. When it comes into contact, the lifting device continues to move downward by the length of the parallel portion 15 a provided on the detected body 15, and the opening 3 a of the adjusting canag 3 can be inserted into the engaging portion 24 provided on the hanging load 23. The detected object 15 and the limit switch 16 are arranged so as to stop just before reaching the correct position. Further, after the limit switch 16 is actuated, the suspension device descends due to the inertial force for the braking distance at the rated speed, and then stops descending. At the stop position, the opening 3a of the adjustment hook 3 is the engagement portion of the suspension load 23. 24 can be inserted. In addition, 18 is a rubber mark bar, 19 is a control panel, 20 is a display panel, 21 is a display lamp, 22 is a hoisting device such as a crane, 23 is a suspended load, and 24 is a hook provided on the suspended load 23. 24a is an inner curved portion of the engaging portion 24, 25 is a hoisting machine main body, 26 is a cable receiver, 27 is a chain bucket, and 28 (a) and 28 (b) are guides.

  Next, the lifting / lowering conveying operation of the suspended load in the hanging device of the present embodiment having the above-described configuration will be described.

  First, when the limit switch 9a detects the open state of the movable hook 4 shown in FIG. 4A, that is, the no load state where the hanging load 23 and the hanging device are not engaged, the operation switch 14 is turned on. Operate and lower the hanger device. When the lifting device is lowered at the rated speed by this lowering operation, the pad 17a of the position detection rod 17 contacts the suspended load 23. The lifting device further continues the lowering operation, and the limit switch 16 is actuated just before the opening 3a of the adjustment canug 3 reaches the position where it can be inserted into the engaging portion 24 of the hanging load 23, and the lifting drive motor 4e. To stop. After the motor is stopped, the lifting device is lowered by a certain braking distance during the lowering operation at the rated speed, and when the opening 3a of the adjustment hook 3 reaches the position where it is inserted into the engaging portion 24 of the hanging load 23, Stop the descent operation.

  Next, while gripping the grips 12a and 12b, the lifting device shown in FIG. 4B is moved to the engaging portion 24 side of the suspended load 23, that is, the arrow side in FIG. The opening 3 a is inserted into the engaging portion 24 of the suspended load 23. At this time, since the leading end of the adjustment canopy is in contact with the engaging portion 24, the adjustment canug 3 rotates to the right by a certain length against the spring 8, as shown in FIG. Moves to an open state with respect to the hinge shaft 5.

  Next, the operation switch 14 is operated, the motor 4e is operated, and as shown in FIG. 4C, the movable hook 4 is rotated from the open position to the closed position, and the opening 4a of the movable hook 4 is suspended. Insert into the engagement portion 24 of the load 23.

  Next, when the operation switch 14 is operated and the crane is raised, as an initial operation, the hanging device is shown in FIG. 4D by the length of the adjustment hook 3 opened with respect to the hinge shaft 5. As shown in the figure, it moves to the right in the figure due to the centering action due to its own weight, and the left movable canag 4 similarly moves to the right by the same length. The portions 3a and 4a are guided along the shape of the engagement bending portion 24a of the engagement portion 24 of the suspended load 23, and further moved to the right. 3a and 4a are completely engaged with the engaging portion 24 of the suspended load 23, the switch 14 is operated, the lifting device rises, and the suspended load 23 is conveyed to a predetermined position.

  Next, the operating switch 14 is operated to lower the hanging device, and when the hanging load 23 approaches the placement position, the hanging load 23 is removed by an inching operation in which the operation switch 14 repeats the ON-OFF operation in a short time. It is lowered at a low speed, and the suspended load 23 is lowered and placed at a predetermined placement position.

  Next, when the inching lowering operation is further continued, the engagement between the opening portions 3a and 4a of the adjusting canug 3 and the movable canag 4 and the engaging portion 24 of the suspended load 23 is released, and the inching lowering operation is further continued and adjusted. The limit switch 16 is actuated slightly before the openings 3a, 4a of the canag 3 and the movable canag 4 reach the detachable position where it can be removed from the engaging portion 24 of the suspended load 23 in the horizontal direction, and the lifting / lowering drive motor 4e of the crane is operated. Stop. After the motor is stopped, the lifting device is lowered by a certain braking distance in the inching lowering operation, reaches the position where the opening 4a of the movable hook 4 can be removed from the engaging portion 24 of the hanging load 23, and stops the lowering operation.

  Next, the operation switch 14 is operated to rotate the movable hook 4 from the closed position to the open position, move the movable hook 4 away from the engaging portion 24 of the hanging load 23, and engage the hanging device with the hanging load 23. It moves to the direction which leaves | separates from the part 24, the opening part 3a of the adjustment canag 3 is released | separated from the engaging part 24 of the hanging load 23, and the transfer operation | movement of the hanging load 23 is complete | finished. As described above, according to the present embodiment, by adjusting the adjustment Nakag within a certain restricted range, an adjustment function for ensuring the engagement between the suspension bracket and the engaging portion can be obtained.

In the embodiment described above, the guides 28a and 28b that are open to the outside shown in FIG. 3 can be provided in the opening portion of the suspension hook to facilitate the insertion of the engaging portion. Furthermore, the motor is equipped with an overload prevention device 4f as a safety device.
(Embodiment 2)
5 (a) to 5 (d) show a hanging load engaging operation using the hanging device of the second embodiment. Like the first embodiment, the hanging device and the hanging load are lifted during the lifting operation of the hanging device. The engagement portion is completely engaged, and the configuration is the same as that of the first embodiment except for the configuration of the suspension bracket.

  In the figure, reference numeral 33 designates a fixed hook which is suspended and fixed to one side of the lower part of the frame 1 and has an opening 33a for engaging with an engaging part 24 such as a hook of the suspended load 23, and 34 is a lower part of the frame 1, which is the fixed hook. 33 is a movable rod that is suspended on the opposite side of 33 and is rotatably supported around a rotation shaft 34a provided on the frame, 35 is a flange provided on the outside of the movable rod 34, and 36 is a shaft that is rotatable on the flange 35. The movable movable tag 36a is supported, an opening of the movable movable tag 34, the shaft 37 is provided outward from the movable rod 34 and is inserted into the insertion hole of the movable movable plate 36, and the nut 38 is screwed into the tip of the shaft 37. , 39 are springs that are inserted into the shaft 37 between the nut 38 and the movable hook 36. Reference numeral 37a denotes a collar that is externally mounted on a shaft 37 that restricts the rotation of the movable hook 36.

  In the first embodiment, the adjustment hook 3 is rotated against the spring within a restricted range. However, in this embodiment, the movable hook 34 provided with the movable hook 36 on the frame 1 so as to be rotatable. It is pivotally supported to be pivoted against the spring within a restricted range.

  A description will be given of the engaging operation between the hanging canag and the suspended load in the present embodiment.

  First, when the limit switch 9a detects the closed state of the movable hook 36 shown in FIG. 5A, that is, the no load state where the suspended load 23 and the hanging device are not engaged, the operation switch 14 is operated. Then, the hanging device is lowered. When the lifting device is lowered at the rated speed by this lowering operation, the pad 17a of the position detection rod 17 contacts the suspended load 23. The hanging device further continues the lowering operation, and stops just before the opening 33a of the fixed hook 33 reaches the position where it can be inserted into the engaging portion 24 of the hanging load 23. After the stop, the hanging device has the rated speed. When the movement is further lowered by a certain braking distance during the lowering operation at, and the opening 33a of the fixed hook 33 reaches a position where it is inserted into the engagement portion 24 of the suspended load 23, the lowering operation is stopped.

  Next, as shown in FIG. 5 (b), the lifting device is moved to the engaging portion 24 side of the suspended load 23, and the opening 33 a of the fixed hook 33 is inserted into the engaging portion 24 of the suspended load 23.

  Next, as shown in FIG. 5C, the movable hook 36 is rotated from the open position to the closed position, and the opening 36 a of the movable hook 36 is inserted into the engagement portion 24 of the suspended load 23.

  In this state, the opening 36a of the movable hook 36 is not completely inserted into the engaging portion 24, the tip of the movable hook 36 is in contact with the engaging portion 24, and the movable hook 36 opens to the left in the drawing. Next, when the crane is raised, the movable hook 36 is rotated counterclockwise in the figure by the spring 39, and the openings 33 a and 36 a of both hooks 33 and 36 are lifted by the lifting device 23 as the lifting device is raised. Are guided along the shape of the engaging curved portion 24a of the engaging portion 24, securely engaged with the engaging portion 24, and the switch 14 is operated to raise the hanging device and to suspend the suspended load 23 in a predetermined manner. Transport to position.

  Next, when the operation switch 14 is operated to lower the suspension device and the suspended load 23 approaches the placement position, the suspended load 23 is lowered at a low speed by the inching operation, and the suspended load 23 is moved to the predetermined placement position. To descent.

  Next, when the inching lowering operation is continued after the descent, the engagement between the opening portions 33a and 36a of the fixed and movable canags 33 and 36 and the engaging portion 24 of the suspended load 23 is released, and the inching lowering operation is further continued. The limit switch 16 is actuated to drive the crane up and down slightly before the openings 33a and 36a of the fixed and movable hooks 33 and 36 reach a detachable position that can be removed from the engaging portion 24 of the suspended load 23 in the horizontal direction. The motor (not shown) is stopped. After the motor is stopped, the lifting device is lowered by a certain braking distance in the inching lowering operation, reaches the position where the opening 4a of the movable hook 4 can be removed from the engaging portion 24 of the hanging load 23, and stops the lowering operation.

  Next, the operation switch 14 is operated to rotate the movable hook 36 from the closed position to the open position, move the movable hook 36 away from the engaging portion 24 of the hanging load 23, and engage the hanging device with the hanging load 23. It moves to the direction which leaves | separates from the part 24, the opening part 33a of the fixed crook 33 is released | separated from the engaging part 24 of the hanging load 23, and the transfer operation | movement of the hanging load 23 is complete | finished.

  According to the present invention, grips having operation levers are provided at both ends of an arm extending in the horizontal direction from the frame, and by operating the operation levers, the lifting / lowering operation of the lifting / lowering conveying device, and the opening / closing operation of the movable hook are performed. Therefore, it is possible to safely and easily carry the suspended load without touching the suspended load. Furthermore, since it is possible to ensure the engagement between the suspended canag and the suspended load, automobile parts, etc. It is useful as a transport tool.

It is a whole front view which shows the hanging tool apparatus of this invention. It is an enlarged side view of a hanging device. FIG. 3 is a plan view of FIG. 2. FIG. 5 is an operation schematic diagram showing a hanging load engaging operation by the hanging tool of the first embodiment. FIG. 10 is an operation schematic diagram showing a hanging load engaging operation by the hanging tool of the second embodiment. It is a front view which shows the hanging tool with which the conventional crane with a pendant switch was mounted | worn. It is a front view which shows the hanging tool with which the conventional crane with a cylinder type switch was mounted | worn.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 1a Flange 1b Bearing part 2 Suspension hook 3 Adjustment hook 3a Opening part 3b Insertion hole 4 Movable hook 4a Opening part 4b Rotation base part 4c Detected part 4d Shaft 4e Motor 4f Overload prevention apparatus 5 Hinge shaft 6 Collar 7 Bolt 8 Spring 9a, 9b Limit switch 10 Arm 11 Operation handle 12a, 12b Operation grip 13 Interlock switch 14 Operation switch 15 Object 15a Parallel part 15b Inclined part 16a, 16b, 16c Limit switch 17 Position detection rod 17a Pad 18 Marker cover DESCRIPTION OF SYMBOLS 19 Control panel 20 Display panel 21 Indicator lamp 22 Hoisting device 23 Lifting load 24 Engagement part 24a Bending part 25 Hoisting machine main body 26 Gable receiver 27 Chain bucket 28a, 28b Guide 33 Fixed crook 33a Opening part 34 Movable 34a rotating shaft 35 flange 36 movable bracket 36a opening 37 the shaft 37a collar 38 nut 39 spring

Claims (4)

  A lifting device comprising a frame having a pair of hanging cangs that are engaged at the upper end of the lifting and lowering conveying device and are engaged with a suspended load at the lower portion, and an operating means for operating the lifting and lowering conveying device and the hanging canag. Has at least one movable canag and an adjusting means for correcting the engagement position of the hanging canag and the suspended load, and the operating means are provided at both ends of the arm extending from the frame. A hanging device characterized by being a grip provided with an operation switch for operating the operation.   2. The hanging device according to claim 1, wherein the hanging canag is a movable canag that pivots between an open position and a closed position, and an adjustment canag that pivots within a certain restriction range.   The suspension device according to claim 2, wherein the adjustment kanag has urging means for urging the kanag toward the side that is engaged with the suspended load. 2. The suspension device according to claim 1, wherein the movable canag has an urging means for urging the canag to a side that is engaged with the suspended load.

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