JP5000166B2 - Hanging tool - Google Patents

Description

  The present invention relates to a lifting tool used when lifting heavy objects such as electrical equipment with a crane or the like.

In the case of lifting an electrical equipment device represented by a conventional switchboard device or the like, as shown in FIG. 9, in addition to the suspension bolts 3 at the four corners on the upper surface of the electrical equipment device (equipment) 2, May be used. In this case, the suspension bolts 3 at the four corners are hooked by the wires 4 having hooks used for lifting, and the suspension bolts 3a at the center other than the four corners are fixed to the suspension bolts 3 at the four corners after passing through the suspension bolts 3a. It was. As a result, the suspension bolt 3a in the central portion is not fixed by the wire 4, and the weight of the device can be balanced through the crane hook portion 1 as in the case of a jierobe, so that the adjustment of the slack of the wire 4 is minimized. It was adopted.
JP 2002-255472 A

  According to the conventional method described above, the wire at the center part is suddenly bent at the part where the hook part of the suspension bolt and the part where the suspension bolt part is passed, respectively, and the hook part of the crane and the suspension bolt when adjusting the left and right balances. A large amount of friction is generated in the portion, so that the wire is easily damaged. For this reason, it is necessary to frequently replace the wires, which is an economic burden.

  Moreover, since the work of balancing is performed in a state where a heavy object is suspended, a skill is required for adjusting the wire. Furthermore, since the load is heavy, a large force is applied to the wire, and there is a problem that it is dangerous. Also, even if it is attempted to reduce the balance adjustment work in the lifted state by adjusting the length of the wire to be as uniform as possible before lifting, the wire due to the sudden bending of the wire at the hanging bolt and crane hook It was not possible to avoid the damage.

  In addition, there is known a suspension balance with a function for adjusting the balance for lifting the equipment with multiple suspension bolts. However, this suspension balance has a different structure with respect to the number of suspension positions. The property was poor (see, for example, Patent Document 1).

  The present invention has been made in view of the above circumstances, and suppresses damage to the wire due to sudden bending of the wire, reduces work that requires skill and work that involves danger as much as possible, and reduces heavy objects such as electrical equipment. An object of the present invention is to provide a lifting tool that can be easily lifted.

The present invention achieves the above object, and is supported by a wire rope extending upward from both sides and rotating in accordance with the movement of the wire rope, and supported by the rotation part without rotating. A wire receiving portion including a stationary portion, a radial bearing interposed between the rotating portion and the stationary portion and transmitting a load applied to the stationary portion to the rotating portion, and from both sides of the stationary portion, respectively. A portion extending upward along the wire rope, and each having a ring portion that at least partially surrounds the wire rope, and the wire receiving portion is in contact with the wire rope. A hanging tool is characterized in that a detent for preventing the wire rope from coming off is formed along the extending direction of the wire rope.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing damage to a wire, the work which requires a skill and the work accompanied by danger can be reduced, and heavy objects, such as an electric equipment, can be lifted easily.

[First Embodiment]
With reference to FIGS. 1-4, 1st Embodiment of the hanging tool which concerns on this invention is described. However, parts that are the same as or similar to those in FIG.

  FIG. 1 is a front view illustrating an example of a situation in which the electric device (device) 2 is lifted using the lifting tool 10 of the first embodiment. FIG. 2 is a front view showing details of the hanging tool 10 of the first embodiment. 3 is a side view in the direction of arrow III in FIG. 2, and FIG. 4 is a plan view in the direction of arrow IV in FIG.

  As shown in FIG. 1, suspension bolts 3 are fixed to the four corners of the upper surface of the substantially rectangular parallelepiped device 2, and the suspension bolt 3 a is fixed to the center of the upper surface of the device 2. A suspension tool 10 is attached to the suspension bolt 3a at the center via a shackle 5. With the crane hook portion 1 positioned above the device 2, one end of the wire rope 4 is fixed to one of the hanging bolts 3 at the four corners, and the crane hook portion 1, the lifting tool 10, and the crane hook portion 1 are The other end is fixed to the other one of the suspension bolts 3 at the four corners.

  As shown in FIGS. 2 to 4, the lower part of the hanging tool 10 is a U-shaped wire receiving portion 6 that is curved downward and convex, and the wire rope 4 contacts and curves along the U-shaped wire receiving portion 6. It is supposed to be. The inner plate portion 11 of the wire receiving portion 6 is obtained by bending a flat plate into a U shape, and receives the load of the wire rope 4 on the outer surface of the inner plate portion 11. A flange 12 is attached along both ends of the curved portion of the inner plate portion 11, and a wire rope passage 13 having a U-shaped cross section is formed by the inner plate portion 11 and the flange 12. A slip stopper is provided to prevent the slipping. The wire rope 4 can slide in the wire rope passage 13.

  In addition, you may make it form the groove | channel which receives the wire rope 4 in the outer surface of the inner side board part 11 as a come-off prevention in order to suppress that the wire rope 4 comes off (not shown).

  A reinforcing member 14 is attached to the upper portion of the wire receiving portion 6 so as to cross the U-shaped opening in the horizontal direction.

  As shown in FIG. 1, the shackle 5 penetrates and engages in the ring formed by the wire receiving portion 6 and the reinforcing member 14, and this shackle 5 is engaged with the suspension bolt 3 a at the center of the upper surface of the device 2. Match.

  Wire guide portions 7 are attached upward from the upper ends of the U-shaped ends of the wire receiving portion 6. The wire guide portion 7 is, for example, a metal rod shape, and an upper end thereof is a ring shape having an opening, and the wire rope 4 penetrates the ring-shaped portion. Since the ring-shaped portion of the wire guide portion 7 has an opening, the wire rope 4 can be passed through the ring-shaped portion from the side after passing the wire rope 4 through the wire rope passage 13.

  As shown in FIG. 4, since the openings of the ring-shaped portions of the two wire guide portions 7 are formed in opposite directions (plane symmetry positions), the wire rope 4 and the hanging tool 10 are moved so as to be twisted with each other. In this case, the wire rope 4 does not come off from the two wire guide portions 7 at the same time.

  According to this embodiment, since the wire rope 4 is bent along the outer surface of the inner plate portion 11 of the wire receiving portion 6, the wire rope 4 can be bent more gently than the bending with the suspension bolt as in the prior art. And thereby damage to the wire rope can be suppressed.

  Further, in order to balance the left and right loads by sliding the wire rope 4 along the gently curved wire receiving portion 6, the wire rope 4 slides compared to when the wire rope 4 is directly passed through the suspension bolt. As a result, balance adjustment is easy. Furthermore, since the work in the suspended state can be performed easily and in a short time, the unstable work time can be minimized and the safety of the work can be improved.

  Furthermore, since the opening part of the upper end of the two wire guide parts 7 is formed in the mutually opposite direction, when the wire rope 4 and the hanging tool 10 move so that it may mutually twist, the wire rope 4 has two wire guide parts. 7 is difficult to come off at the same time.

[Second Embodiment]
With reference to FIGS. 5-8, 2nd Embodiment of the hanging tool which concerns on this invention is described. However, parts that are the same as or similar to those in the prior art or the first embodiment are denoted by common reference numerals, and redundant description is omitted.

  FIG. 5 is a front view of the hanging tool 20 according to the second embodiment. 6 is a side view in the direction of arrow VI in FIG. 5, FIG. 7 is a plan view in the direction of arrow VII in FIG. 5, and FIG. 8 is a plan sectional view in the direction of arrow VIII-VIII in FIG.

  The suspension tool 20 of the second embodiment is engaged with the suspension bolt 3a at the center of the upper surface of the device 2 via the shackle 5, similarly to the suspension tool 10 of the first embodiment shown in FIG. .

  As shown in FIGS. 5 to 8, the hanger 20 has an annular wire receiving portion 26 supported on the lower side by the wire rope 4, and extends upward from the wire receiving portion 26 to guide the wire rope 4. Wire guide portions 7. The wire receiving portion 26 includes an annular rotating portion 21 that can rotate in response to the movement of the wire rope 4 in contact with the wire rope 4, and an annular stationary portion 28 disposed inside the rotating portion 21. . The rotating part 21 and the stationary part 28 are in contact with each other through a radial bearing 29. The rotating portion 21 is provided with a flange 12 so as to sandwich the wire rope 4 so that the wire rope 4 is not easily detached, and a wire rope passage 13 having a U-shaped cross section is formed.

  The two wire guide portions 7 are fixed to the stationary portion 28. The shackle 5 is passed through the opening at the center of the rotating portion 21, whereby the suspension bolt 3 a and the suspension tool 20 at the center of the upper surface of the device 2 are engaged (see FIG. 1).

  According to this embodiment, the wire rope 4 supports the load of the rotating part 21, and the rotating part 21 supports the stationary part 28 via the radial bearing 29. Thereby, since a slip does not arise between the wire rope 4 and the hanging tool 20, damage to the wire rope 4 is further suppressed. Furthermore, since the hanging tool 20 functions as a moving pulley and balance adjustment can be performed by rotation of the rotating part 21, workability of adjusting the length of the wire 4 is improved.

It is a front view which shows the example of the condition which lifts an electric equipment using 1st Embodiment of the hanging tool which concerns on this invention. It is a front view of 1st Embodiment of the hanging tool which concerns on this invention. FIG. 3 is a side view in the direction of arrow III in FIG. 2. FIG. 4 is a plan view in the direction of arrow IV in FIG. 2. It is a front view of 2nd Embodiment of the hanging tool which concerns on this invention. It is a VI arrow direction side view of FIG. It is a VII arrow direction plan view of FIG. It is a VIII-VIII arrow flat cross-sectional view of FIG. It is a front view which shows the example of the condition which lifts an electric equipment using the hanging tool by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Crane hook part 2 ... Equipment 3, 3a ... Suspension bolt 4 ... Wire rope 5 ... Shackle 6 ... Wire receiving part 7 ... Wire guide part 10 ... Hanging tool 11 ... Inner board part 12 ... Flange 13 ... Wire rope passage 14 ... Reinforcing member 20 ... Suspension tool 21 ... Rotating part 26 ... Wire receiving part 28 ... Stationary part 29 ... Radial bearing

Claims (4)

An annular rotating part supported by a wire rope extending upward from both sides and rotating according to the movement of the wire rope, a stationary part supported by the rotating part without rotating, the rotating part and the stationary part A radial bearing that is interposed between the radial bearing and transmits a load applied to the stationary portion to the rotating portion;
Two wire guide portions respectively extending from both sides of the stationary portion along the wire rope and each having a ring portion at least partially surrounding the wire rope;
Have
A lifting tool characterized in that a detachment stop is formed along a direction in which the wire rope extends in a portion where the wire receiving portion is in contact with the wire rope. The suspension device according to claim 1, wherein the detachment stop includes two flanges formed along the wire rope across a portion where the rotating portion is in contact with the wire rope. The suspension tool according to claim 1 or 2, wherein the detachment stop includes a groove formed in a portion where the rotating portion is in contact with the wire rope.   The ring portions each have one opening, and the wire rope is in a position where it does not come off at the same time when the suspension is twisted in one direction with respect to the wire rope. The hanging tool according to any one of claims 1 to 3, wherein the hanging tool is characterized by the following.

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