JP2003155188A - Hanging bolt and lifting sling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanging bolt and a lifting sling provided with the same enabling enhancement of lifting work efficiency. SOLUTION: The lifting sling comprises (1) a main shaft 14 having an engagement section 18 and a hanging bolt 10 arranged on the outer circumference of the shaft 14 and provided with an outer shell 20 having a coil spring 25 and (2) a ring member 2 having an engagement hole 6 for engagement with the section 18. Linkage is swiftly established between the hanging bolt 10 and a link member 2 when the periphery of the engagement hole 6 are pinched between the section 18 after penetrating through the hole 6 with the spring 15 in its compressed state and the shell 20 abutting at the periphery of the engagement hole 6.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a suspension bolt and a suspension for suspending an article.

[0002]

2. Description of the Related Art Bolts (hereinafter referred to as "hanging bolts") are used for suspending relatively heavy articles (heavy items) such as press dies, iron plates, and building materials. As shown in FIG.
In a conventional general suspension bolt 100, a male screw 103 is formed on the surface of a main shaft 102. On the other hand, a bolt hole into which the main shaft 102 of the hanging bolt 100 is inserted is provided on the upper surface of the article 110 to be hung or the auxiliary material for suspension provided on the article to be hung (hereinafter, these may be collectively referred to as “article side”). 112 is provided. Inside the male screw 1
Female thread 113 corresponding to No. 03 is formed. The article side 1 while screwing the male screw 103 and the female screw 113 together
Fix bolt 100 to 10. In this state, one end of a wire (not shown) connected to the crane or the like is attached to the ring 104 provided at one end of the suspension bolt 100. Then, operate a crane or the like to lift the suspension bolt 100.
The article 110 is lifted by a wire via the.

[0003]

As described above, FIG.
Since the conventional hanging bolt 100 as shown in (4) is fixed to the article side by screwing, it takes a relatively long time for its attaching work and its removing work. For this reason, there is a demand for the development of a hanging bolt that can be quickly attached to and detached from the article. For example, when a large number of articles (iron plates and the like) are continuously hoisted and moved by a crane, the length of time required for attaching and detaching the hanging bolt to and from the article may affect the hoisting work efficiency. That is, the lifting work efficiency can be improved by shortening the time for attaching and removing the hanging bolt from the article.

It is an object of the present invention to provide a hanging bolt that can be quickly attached to and detached from an article in order to improve the lifting work efficiency, and a lifting tool (a lifting mechanism) equipped with the bolt.

[0005]

Means, Actions and Effects for Solving the Problems A suspension bolt provided by the present invention includes a main shaft that constitutes a bolt main body and an outer wall portion that is arranged on the outer periphery of the main shaft. The outer wall portion has a through hole through which at least a part of the main shaft can pass and a spring. In addition, an engaging portion that projects laterally with respect to the spindle is provided at one end (tip or near the edge) of the spindle. The engaging portion has a non-circular cross section or a bottom surface orthogonal to the axial direction. That is, it is intended to exclude those in which the cross sections of the engaging portions cut along an arbitrary imaginary plane orthogonal to the main shaft forming direction are all circular (for example, cylindrical in which the main shaft is the generatrix).

In the hanging bolt of the present invention, at least a part of the outer wall portion can be retracted from a predetermined position along the main axis by an external force, and when released from the external force, the elastic force of the spring reaches a predetermined position. It constitutes a movable part that returns. Then, when the movable portion retracts along the main shaft, one end side including the engaging portion of the main shaft (that is, the end portion on the article side) is included as compared with when the movable portion is located at a predetermined position. Are configured to relatively project from the outer wall portion.

The present invention also provides a suspender including the suspension bolt having the above structure as one component. That is, the suspender of the present invention is (1) a suspension bolt having the above-described configuration, and (2) a link member that engages with an engaging portion of the bolt, and the engaging portion of the bolt penetrates in the axial direction. However, a link member having an opening-shaped engaging hole that prevents the outer wall portion projecting in the lateral direction from entering is provided as a main component. The suspending tool of the present invention is such that the link member is engaged by the engaging portion penetrating the engaging hole of the link member and the outer wall portion abutting the periphery of the engaging hole in a state where the spring is elastic. The hanging bolt and the link member are connected to each other by sandwiching the peripheral portion of the hole.

In the hanging device of the present invention, the hanging bolt can be easily connected to the article side without screwing the screw unlike the conventional bolt (FIG. 9). That is, in the hanging device of the present invention, by applying an external force in a predetermined direction in a state where the outer wall portion is in contact with the periphery of the engaging hole (the surface side of the link member), the engaging portion of the main shaft is included. The end side of the can be projected from the outer wall. At this time, the engaging portion of the protruding hanging bolt is passed through the engaging hole of the link member (article side). Then, the external force is stopped from being applied while shifting the position of the engaging portion so that a part of the engaging portion overlaps the opening peripheral edge portion (the back surface side of the link member) of the engaging hole. Then, the elastic force (repulsive force) of the spring pulls the end portion of the main shaft including the engaging portion toward the outer wall portion. As a result, the outer wall portion on the front surface side of the link member and the engaging hole of the link member are penetrated. A part of the link member (that is, the peripheral portion of the engaging hole) is sandwiched between the engaging portion on the back surface side and the engaging portion by the force of the spring.

On the other hand, an external force is applied again to the suspension bolt so that the movable portion retracts along the main axis from the sandwiched state. As a result, the end portion of the main shaft including the engaging portion is projected again from the outer wall portion that is still in contact with the periphery of the engaging hole, and the contact between the engaging portion and the link member is released. Then, by pulling out (releasing) the engaging portion from the engaging hole, the connection between the hanging bolt and the link member is released,
The hanging bolt can be easily removed from the article side. As described above, according to the hanging tool and the hanging bolt of the present invention,
The hanging bolt can be easily and quickly attached to and removed from the article side (link member) without performing a troublesome screwing operation. Therefore, according to the hoisting tool and the hoisting bolt of the present invention, it is possible to shorten the time for attaching the hoisting bolt to the article and the time for removing the hoisting bolt from the conventional one, and improve the hoisting work efficiency.

In a preferable suspension bolt of the present invention, the engaging portion is arranged outside the through hole forming surface (bottom surface) of the outer wall portion when the movable portion is arranged at a predetermined position. At this time, the engaging portion has a shape capable of exposing at least a part of the through hole forming surface of the outer wall portion (that is, the exposed portion of the outer wall portion when the engaging portion is inserted into the engaging hole of the link member). It has a shape capable of abutting on the peripheral portion of the engaging hole.
In the hanging bolt of this aspect, since the engaging portion is exposed to the outside, positioning with the engaging hole is easy. Therefore, the engaging portion can be inserted into the engaging hole and penetrated more quickly.

Further, a preferable suspending tool of the present invention is that the engaging portion penetrating the engaging hole at the peripheral edge portion of the engaging hole on the side where the engaging portion penetrates (that is, the back surface side of the link member). Is characterized in that an engaging recess for fitting is formed. In the suspender including the link member of this aspect, the engaging portion of the bolt can be stably held on the back surface side (the side through which the engaging portion penetrates) of the link member. Therefore, more firm engagement (connection) can be realized.

More preferably, the suspender according to the above-mentioned aspect has guide means for guiding the engaging portion penetrating through the engaging hole into the engaging concave portion at a position close to the engaging concave portion. It is characterized by being provided. In the hanging tool of this aspect, the engaging portion that has passed through the engaging hole is quickly fitted into the engaging recess by the guide means.
Therefore, according to the hanging tool of this aspect, firm engagement (connection) between the hanging bolt and the article side (link member) can be realized more quickly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of a hanging bolt and a hanging tool of the present invention will be described below with reference to the drawings. 1 and 2 are a side view and a bottom view of a suspension bolt 10 according to the present embodiment, respectively.

As shown in FIGS. 1 and 2, the suspension bolt 10 roughly includes a main shaft 14 that constitutes a bolt main body, an eye nut 11 attached to one end of the main shaft 14, and the other end. A cylindrical outer wall portion (spring case) 20 arranged on the outer peripheral portion of the spindle near the end portion 14a of the
It consists of and. A threaded portion (male thread portion) 15 is formed on a part of the main shaft 14, and an eye nut 11 is screwed to an end portion thereof. In addition, such an eye nut 11
The loosening and disengagement of the is controlled by a fixing nut (hexagonal nut) 12 attached to the main shaft 14. The eye nut 11 corresponds to the ring 104 (FIG. 9) of the conventional hanging bolt 100 described above, and is connected to a wire of a crane (not shown) or the like. On the other hand, as shown in FIG. 1 and FIG. 2, a block-shaped engaging portion 18 protruding laterally with respect to the axial direction is provided at an end portion 14a (here, a distal end portion) on the outer wall portion 20 mounting side of the main shaft 14. Are formed.

Next, the outer wall portion 20 will be described. Figure 1
As shown in FIG. 3, the outer wall portion 20 is formed in a cylindrical shape, and has a tubular body 24 such as a tea canister and a cap ring (nut) 21 as main constituent members. The tubular body 24 corresponds to the movable portion according to the present invention. The main body 24 (hereinafter referred to as “movable portion 24”) and the cap ring 21 are formed with joint peripheral wall portions 24a and 21a whose diameters are adjusted so as to overlap each other. Through holes 27 a and 27 b having a size that allows the main shaft 14 to pass through (however, the engaging part 18 cannot pass through) are provided on the plane (bottom surface) of the movable portion 24 and the cap ring 21. As shown in FIG. 3, these through holes 27a, 2a
A part of the main shaft 14 penetrates the hollow portion of the outer wall portion 20 while passing through 7b. The through hole 2 of the cap ring 21
A female screw (not shown) corresponding to the male screw 15 of the main shaft 14 is formed on the portion 7a. On the other hand, no screw is formed in the through hole 27b of the movable portion 24, and no male screw is formed in the portion of the corresponding main shaft 14 that can pass through the through hole 27b (FIG. 3). Therefore, the cap ring 21 is fixed to the main shaft 14 (screw forming portion) at a predetermined position, while the non-screw forming portion of the main shaft 14 can smoothly pass through the through hole 27b of the movable portion 24. Due to this relationship, as shown in FIG. 3, the movable peripheral portion 24 is axially moved relative to the cap ring 21 while sliding the joint peripheral wall portions 24a and 21a as if the lid of the tea barrel were opened and closed. It can be moved (stretched).

As shown in FIG. 3, a coil spring 25 is axially arranged along the main shaft 14 in the gap between the main shaft 14 which penetrates the hollow portion of the movable part 24 and the peripheral wall of the movable part 24. Has been done. Further, a collar (adjustment ring) 22 for adjusting the elastic force (repulsive force) of the coil spring 25 is fitted on the upper part of the coil spring 25 on the outer periphery of the main shaft 14. That is, color 2
Cap ring 21 on top of which surrounds 2
Is fitted.

In this state, the cap ring 21 is rotated in a predetermined direction (tightening direction) to approach the movable portion 24. Then, the coil spring 25 is compressed through the collar 22 and the spring 2
Elasticity (repulsion) occurs in 5. Due to the elasticity, the movable portion 24 is originally pushed down in the moving direction of the cap nut 21, but actually the engaging portion 18 is caught and the movement of the movable portion 24 is blocked (FIGS. 2 and 3). Therefore, by appropriately adjusting the position of the cap ring 21, it is possible to configure the outer wall portion 20 in a state where a predetermined elastic force can be generated in the coil spring 25 (the state shown in FIG. 3). In order to prevent the cap ring 21 from loosening from this state, the fixing nut (hexagon nut) 19
Is attached to the main shaft 14.

With respect to the outer wall portion 20 in the state shown in FIG. 3 (hereinafter referred to as "initial state"), a predetermined axial direction (for example, FIG. 3).
When an external force is applied to the cap ring 2 while the coil spring 25 is compressed,
Move to approach 1. When the external force is no longer applied, the movable portion 24 is again in the initial position (that is, the position where the bottom surface of the movable portion contacts the engaging portion 18) by the elastic force (repulsive force) of the compressed coil spring 25. Can be returned to.

Next, the link member 2 formed on the article side will be described. As shown in FIG. 3, on the upper surface of the article 1 (here, a plate-shaped building material), a plate-shaped link member 2 for connecting the above-mentioned hanging bolt 10 is provided with a bolt 3.
It is fixed by a and 3b. A recess 4 is provided on the side of the link member 2 facing the article 1 (FIG. 3). As shown in FIGS. 5 and 6, an engaging hole 6 communicating with the surface (outer surface) of the link member is provided in the portion corresponding to the bottom of the recess 4 (the ceiling portion of the link member in the position of FIG. 3). Has been. The opening shape of the engaging hole 6 allows the engaging portion 18 of the hanging bolt 10 and the part 14a of the main shaft 14 to pass through, but allows the bottom of the movable portion (the surface in contact with the link member 2) 24b of the outer wall portion 20 to enter. The engaging portion 18
It is formed in an elliptical shape similar to the contour of.

Further, as shown in FIG. 5, recesses 7a and 7b are formed in the peripheral portion of the engaging hole inside the recess 4 in a direction intersecting with the major axis direction of the elliptical engaging hole 6. . The depressions (hereinafter referred to as “engagement recesses 7a and 7b”) are formed into a shape into which the engagement portion 18 can be fitted. Further, a guide bolt 8 which is a specific example of the guide means according to the present invention is provided around the engagement recess 7b so as to project.

A mechanism for attaching (connecting) the hanging bolt 10 to the link member 2 in the hanging tool composed of the hanging bolt 10 and the link member 2 having the above-described structure will be described. First, as shown in FIG. 3, the hanging bolt 10 is applied vertically to the flat surface (outer surface) of the link member 2 to insert the engaging portion 18 of the spindle end portion 14 a into the engaging hole 6. At this time, the movable portion bottom surface 24b (see FIG. 2) of the outer wall portion 20 contacts the surface of the link member 2 (that is, the peripheral edge portion of the engagement hole 6). When the hanging bolt 10 is further pushed in the direction of the arrow in FIG. 3, the movable portion 24 moves toward the cap ring 21 while the coil spring 25 is contracted by the pushing (external force).
4, the main shaft end 14a including the engaging portion 18 protrudes from the movable portion 24 and the recess 4
It is possible to enter inside (see FIGS. 4 and 7).

Then, from such an approached state, the suspension bolt is rotated as it is by about 90 ° in the direction of the arrow shown in FIG. Then, when the application of the pressure (external force) is stopped, as shown in FIG. 8, the engaging portion 18 that has entered the concave portion 4 is fitted (dropped) into the engaging concave portions 7a and 7b by the elastic force (repulsive force) of the coil spring 25. )be able to. The attachment of the suspension bolt 10 to the link member 2 is completed by such a simple and time-consuming operation. That is, in this state, due to the elasticity (repulsion) of the coil spring 25, the concave portion 4
The link member 2 (peripheral portion of the engaging hole 6) is strongly sandwiched between the inner engaging portion 18 and the outer wall portion 20 (movable portion bottom surface 24) on the front surface side of the link member. A substantial fixation of is achieved. It should be noted that the degree of the sandwiching force is selected and adjusted for the coil spring to be used (for example, changing the tightening position of the cap ring 21).
Can be adjusted accordingly.

Further, in the present embodiment, by installing the guide bolt 8, it is possible to reliably perform the fitting of the engaging portion 18 by performing the rotating operation once without redoing it many times. You can That is, when the suspension bolt 10 is rotated in the direction of the arrow in FIG. 7 in order to fit the engaging portion 18 that has entered the concave portion 4 into the engaging concave portions 7a and 7b, part of the rotating engaging portion 18 is concave. The rotation operation of the guide bolt 8 is restricted by hitting the guide bolt 8 provided in the inside of the guide bolt 4. In the present embodiment, as shown in FIG. 8, the regulated position is the position where the engaging portion 18 and the engaging recesses 7a and 7b just overlap. Therefore, the worker automatically engages by the repulsive force of the spring 25 by turning the suspension bolt 10 in a predetermined direction and stopping the operation at a position where the engagement portion 18 hits the guide bolt 8 and the rotation thereof is stopped. The part 18 can be fitted into the engagement recesses 7a and 7b.

Next, the removal of the suspension bolt 10 from the link member 2 will be described. Such removal can be performed simply and quickly by performing the above-described attachment work in the reverse order. That is, by pushing the suspension bolt 10 in the direction of the link member 2 against the urging force of the coil spring 25, the main shaft end portion 14a including the engaging portion 18 is projected in the direction of the article 1 by the mechanism of the outer wall portion 20 described above. To do. That is, the engaging portion 18 is disengaged from the engaging recesses 7a and 7b (see FIG. 3). Next, the suspension bolt 10 is moved in the direction opposite to the arrow direction shown in FIG. 7 by approximately 9 until the engagement portion 18 is arranged at the position (the position shown in FIG. 7) overlapping the engagement hole 6.
Rotate 0 °. Then, at that position, the main shaft 14 and the engaging portion 18 are pulled out from the engaging hole 6. The work of removing the hanging bolt 10 from the link member 2 is completed by such a simple and time-saving work.

In this embodiment, the engaging portion 18 can be pulled out from the recess 4 quickly by the installation of the guide bolt 8 without any trouble due to the rotating operation. Guide bolt 8 according to the present embodiment
Also functions as means for assisting in releasing the engagement (connection) between the hanging bolt 10 and the link member 2 (connection release assisting means). That is, when the suspension bolt 10 is rotated in the direction opposite to the direction of the arrow in FIG. 7, a part of the rotating engaging portion 18 hits the guide bolt 8 and its rotational movement is restricted. The restricted position is the position where the engaging portion 18 and the engaging hole 6 exactly overlap. Therefore, the operator turns the suspension bolt 10 in a predetermined direction so that the engaging portion 18 moves to the guide bolt 8.
The engaging portion 18 and the spindle end portion 14a can be surely pulled out from the engaging hole 6 by stopping the operation at the position where the rotation of the engaging portion 18 is stopped.

Although the preferred embodiment of the present invention has been described above, the suspending tool and the suspending bolt of the present invention are not limited to those shown in the drawings. For example, the outer wall portion 20 of the above-described form
Is formed in a cylindrical shape on the outer periphery of the bolt main shaft 14 and houses the coil spring 25 therein, but the shape is not limited to this. For example, two cap rings 21 as illustrated may be arranged so as to be plane-symmetric with respect to the main axis, and a spring may be exposed between them. In this case, one cap ring corresponds to the movable part.

Further, in the above embodiment, the guide bolt 8 is provided as the guide means and / or the decoupling auxiliary means, but the guide bolt 8 is not limited to such a shape. For example, a part of the opening edge of the engagement hole may be provided in a flange shape so as to prevent the engagement portion from advancing (rotating).
The guide means is not limited to mechanical means. For example, the bottom of the engagement recesses 7a and 7b may be magnetized, and the approaching iron engagement part 18 may be attracted by the magnetic force applied to the engagement recess and attached to the inside of the recess. Further, the link member according to the present invention may be provided separately from the article to be hung as in the above embodiment,
Alternatively, it may be formed as a part of an article (iron plate, press die, etc.).

Specific examples of the present invention have been described above in detail, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. Further, the technical elements described in the present specification or the drawings are
The technical usefulness is exhibited alone or in various combinations, and is not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in the present specification or the drawings achieves a plurality of purposes at the same time, and achieving the one purpose among them has technical utility.

[Brief description of drawings]

FIG. 1 is a side view showing a suspension bolt according to an embodiment.

FIG. 2 is a bottom view showing the suspension bolt according to the embodiment.

FIG. 3 is a cross-sectional view of essential parts showing a suspender according to an embodiment.

FIG. 4 is a cross-sectional view of essential parts showing a suspender according to an embodiment.

FIG. 5 is a plan view showing a link member according to one embodiment.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a plan view showing a state in which the engaging portion of the suspension bolt is inserted in the link member according to the embodiment.

FIG. 8 is a plan view showing a state in which an engaging portion of a suspension bolt is fitted in an engaging concave portion of a link member according to an embodiment.

FIG. 9 is a cross-sectional view of an essential part schematically showing the mechanism of a conventional hanging device.

[Explanation of symbols]

1,110 articles 2 Link members 4 recess 6 engagement holes 7a, 7b Engagement recess 8 induction bolt 10,100 hanging bolt 14,102 spindle 14a Spindle end (tip) 18 Engagement part 20 outer wall 21 Cap Ring 24 Moving part 24b Bottom of movable part 25 coil spring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideyuki Matsuo             Noritake Shincho 3-chome 1-36, Nishi-ku, Nagoya-shi, Aichi             Noritake Co., Ltd. Limited             Within F term (reference) 3F004 AA08 AB19 AD07 PC30

Claims (5)

[Claims] 1. A bolt for suspending an article, comprising a main shaft that constitutes a bolt main body, a through hole through which at least a part of the main shaft can pass, and a spring, and is arranged on the outer periphery of the main shaft. An outer wall portion is provided, and at one end portion of the main shaft, an engagement portion that projects laterally with respect to the main shaft and has a non-circular cross section or bottom surface orthogonal to the axial direction is provided. At least a part of the outer wall portion is formed with a movable portion that can be retracted from a predetermined position along the main axis by an external force and that returns to a predetermined position by the elastic force of the spring when released from the external force. When the movable part retracts along the main shaft, one end side including the engaging part of the main shaft protrudes from the outer wall part more than when the movable part is at the predetermined position. Yes, hanging bolt. 2. The engaging portion is arranged outside the through hole forming surface of the outer wall portion when the movable portion is arranged at a predetermined position, wherein the engaging portion is The hanging bolt according to claim 1, wherein at least a part of the through hole forming surface of the outer wall portion is formed in a shape that can be exposed. 3. A suspender for suspending an article, comprising the following (1) and (2): (1) A bolt for suspending the article, the main shaft constituting a bolt main body, and the main shaft. Is provided with an outer wall portion having a through hole through which at least a part of the main shaft can penetrate and a spring and arranged on the outer periphery of the main shaft, and one end of the main shaft is projected laterally with respect to the main shaft. An engaging portion is formed, and at least a part of the outer wall portion retreats from a predetermined position along the main axis by an external force, and when released from the external force, returns to a predetermined position by the elastic force of the spring. When the movable part is retracted along the main shaft, one end side including the engaging part of the main shaft is more movable than when the movable part is at the predetermined position. Hanging bolts protruding from the outer wall; and (2) front A link member engaged portion and the engagement of the bolt, the link member engaging portion of the bolt may penetrate axially but having engaging hole opening shape that prevents the entry of the outer wall portion;
The engaging portion that penetrates the engaging hole and the outer wall portion that abuts the periphery of the engaging hole while the spring is elastic, A hanging tool that realizes the connection between the hanging bolt and the link member by sandwiching. 4. In the link member, an engaging concave portion for fitting the engaging portion penetrating the engaging hole is formed in a peripheral edge portion of the engaging hole on the side where the engaging portion penetrates. The hanging tool according to claim 3. 5. The guide means according to claim 4, wherein guide means for guiding an engaging portion penetrating the engaging hole into the engaging concave portion is provided at the engaging concave portion or a position close to the engaging concave portion. Hanging equipment.