JP6346573B2 - Hanging tool - Google Patents

Description

The present invention relates to a lifting tool that allows a lifting object to be detachably connected to a wire of a lifting device such as a crane so that a lifting object can be lifted by the lifting device.

In general, when an operation of lifting a lifting object with a crane and moving it to a desired place is performed, first, the lifting object is detachably connected to a wire provided on the crane using a lifting tool. In that state, by winding the wire, lifting the lifting object, moving it to the desired location and placing it, then releasing the connection between the lifting object and the wire by the lifting tool and separating them A series of moving work of the lifting object is completed.

Various types of lifting devices that detachably connect the lifting object and the wire have been developed in correspondence with the lifting object and the like. For example, Patent Document 1 discloses outwardly in plan view by its own weight. A lifting device 10 is disclosed that includes a bracket 13 that swings so as to open and swings so as to close in a plan view by pulling up a rectangular ring-shaped body 16 with a storage wire 17. When the lifting device 10 for lifting is connected to the floor slab 2 to lift the floor slab 2,
First, the lifting hoist 10 is lowered and inserted into the opening 2b of the floor slab 2 from above. At this time, the bracket 13 comes into contact with the floor slab 2 (the edge of the opening 2b) to be closed from its open state by its own weight, and is inserted into the lower surface side of the floor slab 2 through the opening 2b. Bracket 13
Is lowered to a position where it does not come into contact with the floor slab 2, the bracket 13 swings due to its own weight and opens outward from the opening 2 b in a plan view so that it can engage with the floor slab 2 vertically. By lifting the lifting lifting tool 10 in this state, the floor slab 2 can be lifted by engaging the bracket 13 with the lower surface of the floor slab 2.

On the other hand, when separating the lifting hanger 10 engaged with the floor slab 2, the bracket 13 is moved so that it can pass up and down through the opening 2b by lifting the storage wire 17 and lifting the rectangular ring-shaped body 16. Swing to close. By lifting the lifting suspension 10 in this state, the lifting suspension 10 can be separated from the floor slab 2 by pulling the bracket 13 from the lower surface side to the upper surface side of the floor slab 2.

Japanese Patent Laid-Open No. 2007-320741

However, the lifting hoist 10 of Patent Document 1 is configured to swing so that the bracket 13 is closed by pulling up the rectangular ring-shaped body 16 by the storage wire 17, and the configuration for closing the bracket 13 is provided. There is a problem of being complicated. Also,
Since the rectangular ring-shaped body 16 is exposed to the outside, the rectangular ring-shaped body 16 may be deformed by receiving a force or an impact from the outside.
There is also a problem that even if the bracket is pulled up, the bracket 13 may not be able to be swung so as to be able to pass through the opening 2b vertically.

The present invention has been made in view of such problems, and has a simple structure, but the suspension object is configured to connect a lifting object to a wire and to release the connection. The purpose is to provide ingredients.

In order to achieve the above-described object, a hanging tool according to the present invention includes an object-side hanging tool provided on a lifting object and a line member (for example, implementation) of a lifting device (for example, the carrier device 121 in the embodiment). The wire (wire rope) W in the form, a rope constructed by twisting chemical fibers, a rope constructed by twisting natural fibers, etc.) and detachably connected to the object-side hanger. A line-side suspension (for example, the wire-side suspension 30 in the embodiment), and by connecting the line-side suspension to the object-side suspension, the suspended object and the line-shaped member are connected to each other. A lifting device that is connected and capable of lifting the lifting object by the lifting device, and is provided at the lower part of the line side lifting device so as to be able to swing up and down and swings by its own weight to the outside. An engaging member that can swing between an unfolding position that opens and an upward movement position that swings upward from the unfolding position and contracts inward, and the object-side suspension is the line-side suspension An opening (for example, the insertion opening 12a in the embodiment) that allows the lower portion of the opening to pass vertically is formed and a receiving member (for example, in the embodiment) having a receiving space for receiving the engaging member through the opening An outer cylinder member 11), and a vertically moving member (for example, the inner cylinder member 20 in the embodiment) provided on the receiving member so as to be vertically movable,
The lower part of the line-side hanger can pass through the opening in a state where the engaging member is positioned at the upward movement position, but the inner diameter of the opening is in a state where the engaging member is positioned at the deployed position. The lower part of the line-side suspender is further expanded so that it cannot pass through the opening, and when the lower part of the line-side suspender is lowered into the opening, the engaging member is Abutting on the opening and receiving the weight of the line-side hanger, swinging upward and moving to the upward movement position, the lower part of the line-side hanger can pass through the opening, When the lower part of the line-side hanger passes through the opening and is received in the receiving space, the engaging member swings to the deployed position by its own weight and expands. And the exhibition located in the receiving space In a state in which the engaging member is swung to a position, and is configured to be able to move the engaging member on said turned position by upward movement of the vertical moving member.

In the above-described hanger, the up-and-down moving member includes a cylindrical portion (for example, the inner cylinder main body portion 21 in the embodiment) that is formed in a cylindrical shape and extends vertically in the receiving space. It is preferable to have an internal space that can receive the lower part of the line-side hanger that is moved up and received in the receiving space.

The vertical movement member includes a vertical movement operation unit that is connected to the cylindrical portion and is located outside the receiving member. The vertical movement member can be moved upward by operating the vertical movement operation unit from the outside. Preferably it is comprised.

Furthermore, the up-and-down movement operation unit is configured by a surrounding member (for example, the lifting ring portion 22 in the embodiment) arranged so as to surround the receiving member on the outer peripheral side, and the surrounding member extends vertically to the receiving member. It is preferable that the cylindrical portion is connected by a connecting member (for example, the connecting portion 23 in the embodiment) disposed through a slide hole (for example, the slide groove 13a in the embodiment) formed through.

In addition, the said vertical movement operation part is a member (for example, rod-shaped member 2 in embodiment) extended from the said cylindrical part to the radial direction outer side through the slide hole extended up and down and formed in the said receiving member.
22) is also preferable.

According to the hanger according to the present invention, when the line-side hanger is connected to the object-side hanger, the engaging member abuts on the receiving member automatically by lowering the line-side hanger so that the up-moving position is automatically set. Since it is received in the receiving space of the receiving member through the opening and swings to the deployed position by its own weight in the receiving space, it is easy just to lower the lower part of the line side hanging device into the object side hanging device The line side hanger can be connected to the object side hanger. Further, if the line-side lifting tool is pulled up in this state, the lifting object can be lifted by engaging the engaging member with the receiving member vertically. On the other hand, when removing the line-side hanger from the object-side hanger, for example, the engaging member is moved to the up-moving position by operating the externally-moving member to move the up-and-down moving member. The line-side suspension can be easily removed from the object-side suspension. The vertical movement member for moving the engagement member to the upward movement position so as to be able to pass through the opening only needs to be provided on the receiving member so as to be simply movable up and down. Therefore, the configuration of the vertical movement member can be simplified. Is possible. For this reason, it is possible to easily connect and release the object-side hanger and the line-side hanger with a simple operation while simplifying the configuration for removing the line-side hanger from the object-side hanger. Can be configured.

In the above-described hanger, it is preferable that the vertically moving member includes a cylindrical cylindrical portion that can receive the lower part of the line-side hanger received in the receiving space. According to this configuration, the vertically moving member that moves up and moves the engagement member to the upward movement position can be configured simply and inexpensively using a general-purpose pipe.

In addition, if the vertical movement member is configured to include a vertical movement operation unit that is connected to the cylindrical portion and is located outside the receiving member, it can be easily engaged simply by operating the vertical movement operation unit from the outside and moving it upward. The member can be moved to the upward movement position.

Furthermore, it is preferable that the up / down movement operation unit is constituted by a surrounding member arranged so as to surround the receiving member on the outer peripheral side. For example, when the lifting member is positioned below the vertical movement operation part and the lifting member is moved upward by moving the lifting member in that state, the lifting member is moved up and down from any direction in the horizontal plane. Therefore, the operation of moving the engagement member to the upward movement position and removing the line-side suspension from the object-side suspension can be performed efficiently.

In addition, it is also preferable that the vertical movement operation unit is configured by a member that extends radially outward from the cylindrical part through a slide hole that is formed through the receiving member. Easy and simple to reduce the manufacturing cost.

It is a side view which shows the state which connected the lifting target object to the wire using the hanging tool which concerns on this invention. It is sectional drawing which shows the II-II part in FIG. It is sectional drawing which shows the III-III part in FIG. It is a figure which shows the wire side hanger which comprises the said hanger, (a) is a side view, (b) is sectional drawing which shows IV (b) -IV (b) part in Fig.4 (a). . It is a longitudinal cross-sectional view which shows the main equipment of a pneumatic caisson method. It is sectional drawing of the hanging tool in the process of engaging a wire side lifting tool with the object side lifting tool, (a) is sectional drawing of the state through which an engaging member passes the opening part for insertion, (b) is engagement. FIG. 5C is a cross-sectional view of the state in which the combined member is swung to the deployed position in the receiving space, and FIG. It is sectional drawing of the hanging tool in the process of removing a wire side lifting tool from the object side lifting tool, (a) is sectional drawing of the state which mounted the lifting object, (b) is a lifting object. A cross-sectional view of the state where the wire-side hanger is lowered in a mounted state, (c) is a cross-sectional view of a state where the inner cylinder member is lifted and the engaging member is swung upward, and (d) is an inner cylinder FIG. 6E is a cross-sectional view of a state where the member is further lifted and the engaging member is swung upward; FIG. It is sectional drawing which shows the inner cylinder member which concerns on a modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the structure of the hanging tool 1 according to the present invention will be described. In the following description, for convenience of explanation, front and rear, left and right, and up and down directions are defined in the directions of arrows attached to each drawing.

As shown in FIG. 1, a lifting tool 1 according to the present invention is a wire that is wound and fed by a target-side lifting tool 10 provided on an upper part of a lifting target T and a crane winch device (not shown). A wire-side hanger 30 that is attached to W and is detachably connected to the object-side hanger 10. This suspender 1 includes an object-side suspender 10 and a wire-side suspender 3.
By connecting 0, the wire W and the lifting object T are detachably connected so that the lifting object T can be lifted by a crane. FIG. 1 shows, as an example of a suspended object T, a ground strength test apparatus for carrying into the work room at the bottom of the caisson in the pneumatic caisson method and measuring the hardness of the ground (this pneumatic The caisson method will be described later).

As shown in FIG. 2, the object-side hanger 10 is formed in a substantially cylindrical shape and extends vertically, and is coupled to the suspended object T, and is formed in a substantially cylindrical shape and the outer cylinder member 11. And an inner cylinder member 20 that extends vertically.

The outer cylinder member 11 has an engaging disk portion 12 formed in a disk shape having an insertion / extraction opening portion 12a penetrating vertically in the center portion, and an engaging disk portion formed in a cylindrical shape extending vertically. The outer cylinder main body 13 is coupled to the lower surface of the outer cylinder 12 and the lower portion is coupled to the suspended object T. The outer cylinder main body 13 is formed with slide grooves 13a, 13a penetrating left and right in the left and right side portions, and extending vertically (see also FIG. 3), and has a receiving space 13b inside. As can be seen from FIG. 2, the outer cylinder main body 13 has an inner diameter larger than the inner diameter of the engagement disk portion 12 (the diameter of the insertion opening 12a).

The inner cylinder member 20 is formed in a cylindrical shape having an inner space 21a that is open up and down, and is formed in a disk shape so as to surround the outer peripheral portion of the inner cylinder main body 21. A slide groove 13a connecting the lifting ring portion 22, the inner cylinder main body portion 21 and the lifting ring portion 22,
The connecting portion 23 is provided at a position 13a.

The inner cylinder main body portion 21 is disposed so as to extend vertically inside the outer cylinder main body portion 13, and the engagement disk portion 1.
The inner diameter is 2 or less (the diameter of the insertion opening 12a). As shown in FIG. 3, the lifting ring portion 22 has an inner diameter larger than the outer diameter of the outer cylinder main body portion 13, and the outer cylinder main body portion 13.
Is provided radially outward. The connecting portion 23 is a slide groove 13 formed in the outer cylinder main body portion 13.
For example, a fastening screw (not shown) is used to fasten to the inner cylinder main body portion 21 and the lifting ring portion 22. For this reason, the inner cylinder member 20 has a position where the connecting portion 23 comes into contact with the lower end portion of the slide groove 13a and a position where the upper end portion of the inner cylinder main body portion 21 is close to the lower surface of the engaging disk portion 12 (or the slide groove). The inner cylinder main body 21, the lifting ring 22, and the connecting portions 23, 23 can be slid up and down integrally between the upper end of 13a and the position where the connecting portion 23 abuts.

As shown in FIG. 4 (a), the wire-side hanger 30 is connected to the wire W via a hanger (not shown).
And an engagement device 32 that is located below the suspension ring portion 31 and that is integrally connected to the suspension ring portion 31 by four connection members 33 that extend vertically.

The engagement device 32 includes a main body 34 formed in a disk shape, a swing support 35 standing upward from the main body 34, and a swing supported by the swing support 35. A joint member 36;
An upper moving stopper 37 erected at the center of the main body 34 and a lower moving stopper 38 disposed between the main body 34 and the engaging member 36 are provided. Each of the connecting members 33 has an upper end portion coupled to the lower surface side of the suspension ring portion 31 and a lower end portion coupled to the upper surface side of the main body portion 34, and the suspension ring portion 31 and the engagement device 32 are integrally connected by the connection member 33. Has been.

The engaging member 36 is formed in a substantially rounded rectangular shape using a plate material, and is a structure that is lifted by the wire W (wire-side lifting tool 30), that is, a lifting object T that is integrally formed.
And it has the rigidity which can support the object side hanging tool 10. FIG. The swing support 35 is shown in FIG.
As shown in FIG. 4, a total of four are provided on the upper surface of the main body portion 34 on the front side, the rear side, the right side, and the left side, and each of the swing support members 35 swings up and down around the rotation shaft 35a. The engaging member 36 is supported as possible. For example, as shown in FIG. 4A, the engagement member 36 on the right side of the upper movement stopper 37 is rotatably supported in the vicinity of the left end portion by the rotation shaft 35a, and therefore has two points around the rotation shaft 35a. The right side (upper stopper 3
The part away from 7) swings up and down. Similarly, the engagement members 36 on the front side, the rear side, and the left side of the upper movement stopper 37 swing up and down.

The upward movement stopper 37 abuts on the upper long side of the engagement member 36 and restricts the upward swing of the engagement member 36. The downward movement stopper 38 abuts on the lower long side of the engagement member 36 and restricts the downward swing of the engagement member 36. The combined member 36 is held in a swing position (hereinafter referred to as “deployment position”) in which the long side extends to the left and right. As can be seen from the above, each engagement member 36 can swing up and down between a deployed position where it abuts on the downward movement stopper 38 and an upward movement position swung upward from the deployed position. As it swings, it expands outward in the radial direction. Note that the upper movement limit position is set by the upper movement stopper 37, as can be seen from the fact that the engagement member 36 can swing upward to a position where it comes into contact with the upper movement stopper 37. Further, each engaging member 36 is located at the unfolded position and has a dimension protruding radially outward from the main body 34, and normally swings downward by its own weight and comes into contact with the downward movement stopper 38. , Located in the unfolded position.

Returning to FIG. 2, the dimensional relationship between the object-side hanger 10 and the wire-side hanger 30 will be described. The outer diameter of the main body 34 of the wire-side hanger 30 is smaller than the diameter of the insertion / extraction opening 12a, and can pass through the insertion / extraction opening 12a up and down, and is inserted / extracted vertically into the internal space 21a of the inner cylinder main body 21. Is possible. Further, the engagement member 36 has a distance A between the tips shown in FIG. 2 (a distance between the tips of the two engagement members 36 and 36 provided with the upward movement stopper 37 interposed therebetween) equal to or less than the diameter of the insertion opening 12a. By being located at the upward movement position, it is possible to pass up and down through the insertion opening 12a. That is, in the state where the engagement member 36 is swung to the upward movement position where the distance A between the tips is equal to or less than the diameter of the insertion / extraction opening 12a, the entire portion below the connecting member 33 of the wire-side lifting device 30 is inserted / removed. It is possible to pass up and down the opening 12a. On the other hand, when the engaging member 36 is located at the unfolded position, the outer end portion of the engaging member 36 expands to the outer diameter side from the insertion / extraction opening 12a in plan view. For this reason, in the state which the whole part below the connection member 33 of the wire side hanger 30 passes the opening part 12a for insertion, is located in the receiving space 13b of the outer cylinder main-body part 13, and rock | fluctuated to the expansion | deployment position. When the wire-side hanger 30 is moved upward, as shown in FIG. 2, the outer diameter side end of the engagement member 36 comes into contact with the lower surface of the engagement disk portion 12 on the outer diameter side than the insertion opening 12a. Thus, it engages with the engagement disk portion 12 in the vertical direction.

Next, an example of a work site where the lifting object is lifted using the lifting tool 1 will be described by exemplifying a case where an underground structure is constructed by the pneumatic caisson method shown in FIG.

FIG. 5 shows the main equipment of the pneumatic caisson method. This pneumatic caisson method is a method that is performed using the excavation equipment E1, the outfitting equipment E2, and the earth removal equipment E3, which are main equipment. Specifically, the caisson 1 made of reinforced concrete is constructed on the ground,
By installing an airtight work room at the bottom of the caisson and sending the compressed air corresponding to the groundwater pressure into this work room, the ground of the work room floor is excavated to sink the caisson into the ground. Configured to build.

The excavation equipment E1 includes an excavator 103 installed in a work chamber 102 provided at the bottom of the caisson 101, an automatic earth and sand loading device 105 that loads the earth and sand excavated by the excavator 103 into a cylindrical earth bucket 104, And a ground remote control room 107 having a remote control device 106 for remotely operating the excavator 103 from the ground.

The outfitting equipment E <b> 2 includes a cylindrical man shaft 111 that connects the ground and the work chamber 102 so that an operator can enter and leave the work chamber 102, and a pressure difference between the atmospheric pressure on the ground and the work chamber 102 provided on the man shaft 111. Man lock 112 (air lock) for adjusting the load, and automatic earth and sand loading device 105
In order to carry the earth bucket 104 loaded with earth and sand to the ground, the ground and the working room 1
And a material lock 114 (air lock) that is provided on the material shaft 113 and adjusts the atmospheric pressure on the ground and the pressure difference in the work chamber 102. A spiral staircase 115 is provided in the man shaft 111, and an operator can go back and forth between the ground and the work chamber 102 using the spiral staircase 115.

The earth removal equipment E3 is an earth bucket 1 on which earth and sand excavated by the excavator 103 are loaded.
04, a carrier device 121 (crane) that lifts and carries the earth bucket 104 to the ground via the material shaft 113, and a earth and sand hopper that temporarily stores the earth and sand carried to the ground by the earth bucket 104 and the carrier device 121. 122.

The lifting tool 1 according to the present invention uses a carrier device 121 (crane) to lift an object to be lifted, and in that state, lifts and lowers the material shaft 113 up and down to work room 10 from the ground.
This is used when a lifting object is carried into 2 or a lifting object in the work chamber 102 is carried out to the ground.

Next, the operation of the hanger 1 configured as described above will be described with additional reference to FIGS. 6 and 7.

In the following, as an example of the operation, the operation in the case where the lifting object T is carried into the working chamber 102 at the bottom of the caisson in the pneumatic caisson method by lifting the lifting object T using the lifting tool 1 will be described. To do. Specifically, the wire side hanger 30 attached to the tip of the wire W fed out from the carrier device 121 (crane) outside the work chamber 102 (ground) is connected to the object side hanger 10, and the carrier device 121 ( A series of operations for lifting the lifting object T by a crane) and carrying it in the work chamber 102 and removing the wire-side hanger 30 from the object-side hanger 10 in the work chamber 102 will be described. In addition, the operation | movement which carries out the lifting target T out of the working chamber 102 from the inside of the working chamber 102 is mentioned later.

Of the above series of operations, first, the operation when the wire-side suspension 30 is connected to the object-side suspension 10 and the suspension object T is prepared for suspension will be described with reference to FIG. . At this time, after operating the carrier device 121 (crane) to place the wire-side hanger 30 above the object-side hanger 10 (insertion / extraction opening 12a), the wire W is fed out and the wire-side hanger 30 is pulled out. Descent. When the wire-side hanger 30 is lowered in this way, the engaging member 3
6 is held in the unfolded position by its own weight until it abuts against the engaging disk portion 12 (the edge portion forming the insertion / extraction opening portion 12a). Then, the engagement member 3 is lowered by the lowering of the wire-side hanger 30.
When 6 abuts on the engaging disk portion 12, as shown in FIG. 6A, the engaging member 36 is swung upward from the deployed position in accordance with the lowering of the wire-side hanger 30. More specifically, the engaging member 36 automatically swings the wire-side suspension 30 as it descends until the distance A between the tips shown in FIG. 2 becomes the same as the diameter of the insertion / extraction opening 12a. Is done. Thereby, the wire side hanging tool 3
The zero engaging device 32 is inserted into the receiving space 13b of the outer cylinder main body 13 through the insertion / extraction opening 12a.

Then, as the wire-side hanger 30 is lowered, the distal end portion of the engaging member 36 is inserted into the insertion opening 12.
When the contact with the engagement disk portion 12 is released by moving to the lower side of a, the engagement member 36 swings downward from its own weight, contacts the downward movement stopper 38 and is held in the deployed position. (See FIG. 6B).
Thus, the lifting preparation of the lifting target T is completed by positioning the engaging member 36 at the deployed position in the receiving space 13b. When the wire W is wound up after the preparation for lifting is completed and the wire-side lifting tool 30 is raised with respect to the object-side lifting tool 10, as shown in FIG. Engaged with the lower surface of the engaging disk portion 12. From this state, the wire W
The lifting object T can be lifted by winding up. Thereby, the lifting target T is moved above the material shaft 113 connected to the work chamber 102, and the wire W is drawn out in this state to pass the material shaft 113, thereby moving the lifting target T to the work chamber 102.
Lower to the inside. In this way, the suspended object T is carried into the work chamber 102 from outside the work chamber 102.

Next, after the lifting target T is carried into the working chamber 102 from outside the working chamber 102, the working chamber 102
FIG. 7 shows the operation when the wire-side hanger 30 is removed from the object-side hanger 10 in the interior.
Will be described with reference to FIG.

The above-described lifting object T is carried into the working chamber 102 after the lifting object T is placed in the working chamber 102 (see FIG. 7A), and then the wire W is further fed out. This is performed by lowering the side suspension 30 (see FIG. 7B). As can be seen from FIG. 7 (b), in the loaded state, the engaging member 36 is located at the unfolded position by its own weight in the receiving space 13b. Even if the hanger 30 is raised, the wire-side hanger 30 cannot be removed from the object-side hanger 10. Therefore, in order to swing the engagement member 36 so as to be reduced in the horizontal direction, the inner cylinder member 20 is operated from the outside to move it upward. Here, in the work chamber 102 at the bottom of the caisson, there is provided an excavator 103 for excavating the ground, which is provided so as to be movable along a rail provided on the ceiling and is operated by remote operation. In the present embodiment, the excavator 103 is remotely operated to operate the excavator 103 by attaching a substantially U-shaped support bracket 40 formed so that the lifting ring portion 22 can be lifted to the excavator 103. The inner cylinder member 20 can be moved up in the unmanned work chamber 102.

Specifically, as shown in FIG. 7 (c), the excavator 103 is remotely operated, and the support bracket 40 is positioned below the lifting ring portion 22 of the inner cylinder member 20. 4
The inner cylinder member 20 is moved upward by lifting 0 upward. Here, the lifting ring portion 22
Is formed in a ring shape, the support bracket 40 can be positioned below the lifting ring portion 22 from any direction in the horizontal plane, and work can be performed efficiently. By moving the inner cylinder member 20 upward in this manner, the inner cylinder body 21 comes into contact with the engaging member 36 located at the deployed position in the receiving space 13b from below, and the inner cylinder body 21
The engagement member 36 is swung upward in response to the upward movement. Then, the inner cylinder member 20 is moved up by the excavator 103 until the connecting portion 23 comes into contact with the upper end portion of the slide groove 13 a and the upper end portion of the inner cylinder main body portion 21 comes close to the lower surface of the engagement disk portion 12. Thus, the engaging member 36 is accommodated in the internal space 21a of the inner cylinder main body 21 (see FIG. 7D), and as a result, the distance A between the tips of the engaging member 36 is equal to the inner diameter of the inner cylinder main body 21. Move to the matching up position.

As described above, the inner cylinder main body 21 is configured such that the inner diameter thereof is equal to or smaller than the diameter of the insertion opening 12a. For this reason, in the state shown in FIG. 7 (d), the wire W is wound up and the wire side hanger 30 is raised with respect to the object side hanger 10, thereby FIG.
As shown in e), the engaging device 32 of the wire-side hanger 30 can be pulled upward from the receiving space 13b without engaging the engaging member 36 with the engaging disk portion 12. In this way, the wire W is wound up in a state where the wire-side hanger 30 is removed from the object-side hanger 10, and the wire-side hanger 30 is taken out to the ground. The delivery of the object T is completed. Thereby, in the work chamber 102, the hardness of the ground can be measured using the ground strength test apparatus which is the lifting object.

Next, after the work in the working chamber 102 of the lifting target T carried in as described above is completed, the lifting target T is lifted using the lifting tool 1 and the work chamber 102 is lifted from the working chamber 102. The operation in the case of carrying out of 102 will be described. Specifically, the wire-side hanger 30 in the work chamber 102.
Are connected to the object-side suspension 10, the lifting object T is lifted and carried out of the work chamber 102, and a series of operations for removing the wire-side suspension 30 from the object-side suspension 10 outside the work chamber 102 is performed. explain.

The operation of connecting the wire-side hanger 30 to the object-side hanger 10 in the work chamber 102 is as follows.
This is the same as the case of connection outside the work chamber 102 described above. That is, the wire side hanger 3
0 is lowered and the engaging device 32 is inserted into the receiving space 13b through the insertion / extraction opening 12a (see FIGS. 6A and 6B). Then, when the engagement member 36 is held in the deployed position (see FIG. 6 (b)), the wire W is wound up and the wire-side suspension 30 is raised, as shown in FIG. 6 (c). The suspended member T is lifted by engaging the joint member 36 with the lower surface of the engaging disk portion 12, and the suspended object T is carried out of the work chamber 102 through the material shaft 113 and placed on the ground. .

Then, after the lifting object T is carried out of the work chamber 102 and placed, the wire-side lifting tool 30 is placed.
Is removed from the object-side suspension 10, for example, the inner cylinder member 20 is moved up using a working machine (not shown) prepared on the ground (see FIGS. 7C and 7D). . Thereby, the engaging member 3
6 is swung upward, and in this state, the wire W is wound up, and the wire side hanger 30 is lifted and pulled out, whereby the wire side hanger 30 is removed from the object side hanger 10 (FIG. 7 ( e)
reference). Thus, the carry-out of the lifting target T from the work chamber 102 to the outside of the work chamber 102 is completed.

As described above, the hanger 1 according to the present invention uses the wire-side hanger 30 as the object-side hanger 1.
When connecting to 0, by lowering the wire-side suspension 30, the engaging member 36 is automatically swung upward and inserted into the receiving space 13b through the insertion / extraction opening 12a, and then
It becomes possible to engage with the lower surface of the engagement disk portion 12 by being automatically positioned at the unfolded position by its own weight. For this reason, it is possible to simply prepare the lifting of the lifting object T by simply connecting the wire hanging tool 30 to the object-side lifting tool 10 simply by raising and lowering the wire-side lifting tool 30.

Moreover, in the hanger 1, the inner cylinder member 21 for removing the wire side hanger 30 is provided in the receiving space 13b and is protected by the outer cylinder main body portion 13, thereby preventing external force or impact. In contrast, the inner cylinder main body 21 can be protected, and deformation of the inner cylinder main body 21 can be suppressed. Furthermore, since the inner cylinder member 20 has a simple configuration including the inner cylinder main body 21, the lifting ring portion 22, and the connecting portion 23, the inner cylinder member 20 is less likely to break down and has excellent durability and operational reliability.

In the present embodiment, the example in which the object-side hanging tool 10 is coupled to the upper part of the lifting object T has been described. However, instead of this configuration, the object-side hanging tool 10 is attached to and detached from the lifting object T. It is good also as a structure which can be mounted | worn possible. According to this configuration, the object-side lifting tool 10 can be diverted between the plurality of lifting objects T, and the required number of the object-side lifting tool 10 is reduced to reduce manufacturing costs (carrying-in and carrying-out costs). be able to.

In the above-described embodiment, the configuration in which the outer cylinder main body 13 is provided with the two slide grooves 13a, 13a has been described, but instead of this configuration, the outer cylinder main body 13 is provided with three or more slide grooves 13a. The connecting portion 23 may be provided in each slide groove 13a to connect the inner cylinder main body portion 21 and the lifting ring portion 22 to each other.

In the above-described embodiment, the lifting ring portion 22 formed in a ring shape has been described as an example.
In short, it is only necessary to be disposed on the outer side in the radial direction of the outer cylinder main body 13 and engage with the support bracket 40 in the vertical direction. For this reason, instead of the ring-shaped lifting ring portion 22, for example, a member formed in a rectangular frame shape in plan view or another member formed in a polygonal frame shape can be used.
For example, as shown in FIG. 8, instead of the lifting ring portion 22, a rod-like member 222 formed so as to extend the connecting portion 23 shown in FIG. The structure which attaches may be sufficient.

In the above-described embodiment, a configuration in which a total of four engaging members 36 are provided swingably on the front side, the right side, the rear side, and the left side of the upper movement stopper 37 is exemplified. A total of two, a total of three, or a total of five or more engaging members 36 may be provided around 37.

In the above-described embodiment, as an example of a work site in which the lifting tool 1 according to the present invention is used, a ground strength test apparatus as an object to be lifted in the unmanned work chamber 102 at the bottom of the caisson in the pneumatic caisson method. The work site where the earth load test device is carried out from the work chamber 102 has been described. The hanging tool 1 according to the present invention is not limited to this example, and is also useful when other equipment is required to be unmanned, for example, when equipment is carried in or out of a nuclear power generation facility. The hanging tool 1 according to the present invention is particularly useful in the work environment where unmanned operation is required as described above, but, of course, can be used in a work environment where unmanned operation is not required.

In the above-described embodiment, when the inner cylinder member 20 is moved upward, the connecting portion 23 comes into contact with the upper end portion of the slide groove 13 a, and the upper end portion of the inner cylinder main body portion 21 is close to the lower surface of the engagement disk portion 12. The structure to perform was illustrated and demonstrated. The present invention is not limited to this configuration, and the inner cylinder member 2
When 0 is moved upward, the connecting portion 23 may come into contact with the upper end portion of the slide groove 13a, and the upper portion of the inner cylinder main body portion 21 may protrude upward from the insertion / extraction opening 12a.

In the above-described embodiment, the lifting object T is lifted by using the wire W (a so-called wire rope, which is formed by twisting a plurality of strands formed by twisting a wire and using a core steel as a core). Has been described as an example. However, if the wire rope used for lifting the lifting object is strong enough to lift the lifting object, a rope constructed by twisting chemical fibers and natural fibers are twisted together. It may be a rope configured as described above.

10 Object-side hanger 11 Outer cylinder member (receiving member)
12a Opening / extracting part (opening part)
13a Slide groove (slide hole)
13b Receiving space 20 Inner cylinder member (vertical moving member)
21 Inner cylinder body (cylindrical part)
21a Internal space 23 Connecting part (connecting member)
22 Lifting ring (enclosure)
30 Wire-side hanger (line-side hanger)
36 engaging member 121 carrier device (lifting device)
222 Rod-shaped member (a member extending radially outward from the cylindrical portion)
T object to be lifted W wire (line-shaped member)

Claims (5)

An object side hanger provided on a lifting object; and a line side hanger provided on a line member of the lifting device and detachably connected to the object side hanger. By connecting the lifting object and the line-shaped member by connecting the line-side lifting tool to a tool, the lifting device enables the lifting object to be lifted by the lifting device,
A deployment position that is swingable up and down and swings under its own weight and expands outwards, and an upward movement position that swings upward from the deployment position and contracts inward. An engagement member swingable between,
The object-side hanger is formed with an opening that allows a lower part of the line-side hanger to pass vertically, and has a receiving member that has a receiving space for receiving the engaging member through the opening; A vertical movement member provided on the receiving member so as to be movable up and down;
The lower part of the line-side hanger can pass through the opening in a state where the engaging member is positioned at the upward movement position, but the inner diameter of the opening is in a state where the engaging member is positioned at the deployed position. The lower part of the line-side hanger is configured so as not to pass through the opening.
When the lower part of the line-side suspender is lowered into the opening, the engaging member abuts against the opening and swings upward under the weight of the line-side suspender to move to the upper movement position. And the lower part of the line-side hanger can pass through the opening,
When the lower part of the line-side hanger passes through the opening and is received in the receiving space, the engaging member swings to the deployed position by its own weight and expands. And
The engaging member can be moved to the up-moving position by moving the up-and-down moving member in a state where the engaging member swings to the deployed position in the receiving space. A hanger characterized in that it is constructed. The vertical movement member includes a cylindrical portion that is formed in a cylindrical shape and extends vertically in the receiving space.
The hoist according to claim 1, wherein the cylindrical portion has an internal space that can receive the lower portion of the line-side hoist that is moved up and received in the receiving space. The vertical movement member includes a vertical movement operation unit that is connected to the cylindrical portion and located outside the receiving member,
The hanging tool according to claim 2, wherein the vertical movement member is configured to be movable upward by operating the vertical movement operation unit from the outside. The up-and-down movement operation part is constituted by an enclosing member arranged so as to enclose the receiving member on the outer peripheral side, and the enclosing member is arranged through a slide hole that extends vertically through the receiving member. The connecting member is connected to the cylindrical portion by a connecting member.
The hanging tool described in 1. The said vertical movement operation part is comprised by the member extended to the radial direction outer side from the said cylindrical part through the slide hole extended and formed in the said receiving member up and down, The suspension of Claim 3 characterized by the above-mentioned. Ingredients.

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