JP5859610B1 - Heavy structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heavy structure capable of utilizing a road in a desired state. A heavy structure is a block of precast concrete that is movably installed on a road surface and extends in a longitudinal direction. A first notch 21a and a second notch 21b through which the first and second claws of the forklift can be inserted respectively are provided on the lower surface 20 of the heavy structure 10 from the front to the rear of the heavy structure 10 in the short direction. It is formed over. Further, a first sling guide groove 31a and a second sling guide for guiding the belt sling are provided substantially at the center in the longitudinal sectional view of the upper surfaces 22a and 22b of the first notch 21a and the second notch 21b, respectively. The grooves 31b are formed from the front side to the back side of the heavy structure 10 in the short direction. [Selection] Figure 1

Description

  The present invention relates to a heavy structure, and more particularly to a heavy structure that is movably installed on a road.

  A heavy structure such as a concrete block installed on a road includes a median strip composed of a strip-shaped member for dividing the forward path and the return path at the center of the road. Conventionally, for example, the following median strips exist.

  FIG. 16 is a schematic side view showing the external shape of such a median strip, and FIG. 17 is an enlarged end view of the XVII-XVII line shown in FIG.

  Referring to these drawings, the central separation band 80 includes a plurality of block bodies 81 made of precast concrete arranged in a band shape extending in a direction parallel to the traveling direction of the road surface 87, and each of the block bodies 81 is arranged. It consists of what was connected by the connection plate 90.

  The block body 81 has a substantially rectangular shape in which a lower part 82 is substantially rectangular in a cross-sectional shape in a direction perpendicular to the traveling direction of the road surface 87, and an upper part 84 protrudes upward from the vicinity of the center of the lower part 82. It has a convex shape.

  In installation, the lower portion 82 of the block body 81 is grounded so that the upper surface 83 of the lower portion 82 of the block body 81 is flush with the road surface 87 and the upper portion 84 projects upward from the horizontal level of the road surface 87. Fill in.

  Since the conventional median strip 80 as described above is intended to bury the lower part 82 of the block body 81 in the ground at the time of installation, it cannot be easily moved once installed. In other words, it is inconvenient that it is difficult to use, for example, in the event of an emergency or an event, when the road is desired to be used extensively, once it is moved, and after such use of the road is completed, it is returned to the original location. .

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a heavy structure that can be easily moved so that a road can be utilized in a desired state.

In order to achieve the above object, an invention according to claim 1 is a heavy structure extending in a longitudinal direction and movably installed on a road, and is formed in a short direction on a lower surface of the heavy structure. The first and second notches that allow the first and second claws of the forklift to be inserted respectively, and the first and second notches that are formed on the upper surfaces of the first and second notches, respectively, and guide the sling for slinging e Bei and 2 sling guide groove, a first sling guide groove is connected to the first notch, a first belt sling groove having a rectangular shape in the longitudinal direction of the cross section, the upper surface of the first belt sling groove A first wire groove having a curved surface that is recessed upward in a longitudinal sectional view, and the second sling guide groove is connected to the second notch and has a quadrangular shape in the longitudinal sectional view Having the first A belt sling groove, provided on the upper surface of the second belt sling grooves, those comprising a second wire groove having a curved surface which is recessed upwardly in the longitudinal direction of the cross section, the.

If comprised in this way, the nail | claw of a forklift can be inserted and lifted to the lower surface of a heavy weight structure, or it can be hung on a crane through a sling. The first and second belt sling grooves fit the cross-sectional shape in the width direction of the belt sling, and the first and second wire grooves fit the radial cross-sectional shapes of the wire rope, round sling, and chain sling.

According to a second aspect of the invention, in the invention according to the first aspect, in the first sling guide groove, the first belt sling groove, the upper surface of the first notch is provided at an end portion of the second sling guide groove side The first wire groove is provided at the end on the second sling guide groove side on the upper surface of the first belt sling groove. In the second sling guide groove, the second belt sling groove is formed on the upper surface of the second notch portion. The second wire groove is provided at the end on the first sling guide groove side on the upper surface of the second belt sling groove.

  When a heavy structure is slung and lifted, the force that pulls the sling inward will work. If comprised in this way, the force which draws a pair of belt sling spanned over the 1st belt sling groove and the 2nd belt sling groove, the pair of wire sling spanned over the 1st wire groove and the 2nd wire groove, etc. will be pulled. The force can be supported at the ends of the first and second sling guide grooves.

According to a third aspect of the present invention, in the first or second aspect of the present invention, each of the first and second cutouts has a trapezoidal shape that extends downward in a sectional view in the longitudinal direction. And each of the both side walls of each of the second cutout portions is connected to the lower surface at an angle of 120 degrees or more.

  If comprised in this way, when the nail | claw of a forklift is inserted, it will become easy to insert a nail | claw along the taper structure which spreads forward, and, thereby, a nail | claw becomes easy to fit a 1st and 2nd notch part.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein each of the first and second belt sling grooves has a trapezoidal shape that extends downward in a sectional view in the longitudinal direction. The both side walls of each of the first and second belt sling grooves are connected to the upper surface at an angle of 120 degrees or more.

If comprised in this way, when it passes along a sling, it will become easy to arrange | position a sling along the taper structure which spreads forward, and, thereby, a sling becomes easy to fit a 1st and 2nd belt sling groove | channel .

As described above, the invention according to claim 1 can be lifted by inserting a claw of a forklift on the lower surface of a heavy structure, or can be hung by hanging on a crane through a sling. The installation efficiency is improved, and it is easy to move the road so that the road can be used in a desired state. Moreover, there exists an effect that it can respond to various slinging tools, such as a belt sling, a wire rope, a round sling, and a chain sling.

The invention of claim 2, wherein, in addition to the effect of the first aspect, the force to draw the pair of belt sling or a pair of wire sling or the like, to support the ends of the first and second sling guide groove side Can be lifted, and the lifted state is stable.

According to a third aspect of the invention, in addition to claim 1 or claim 2 Effect of the invention described, upon insertion of the pawl of the forklift, the first and second easier to insert the claws along the tapered structure of the flared Since it becomes easy to fit two notch parts, the positioning of the claw at the time of insertion of the claw of a forklift becomes easy.

In addition to the effect of the invention according to any one of claims 1 to 3 , the invention according to claim 4 makes it easier to place the sling along the taper structure which is first widened when the sling is passed through. And since it becomes easy to fit in a 2nd belt sling groove | channel , positioning of the sling at the time of sling becomes easy.

It is a front view which shows the external appearance shape of the heavyweight structure by 1st Embodiment of this invention. It is a left view of the heavy weight structure shown in FIG. It is a right view of the heavy weight structure shown in FIG. It is a top view of the heavy weight structure shown in FIG. It is sectional drawing of the VV line shown in FIG. It is a fragmentary sectional view which shows the use condition which provided the guard pipe in the heavy weight structure shown in FIG. It is a figure which shows the use condition which arranged the heavy structure shown in FIG. 1 side by side, and comprised the median strip. It is a figure which shows the state which lifted the heavy weight structure shown in FIG. (A) is a figure which shows the state which lifted the heavy structure by the belt sling, (b) is a figure which shows the state which lifted the heavy structure by the forklift. It is a front view which shows the external appearance shape of the heavy structure by the 2nd Embodiment of this invention. It is a front view which shows the external appearance shape of the heavy-weight structure by 3rd Embodiment of this invention. It is a front view which shows the external appearance shape of the heavy structure by the 4th Embodiment of this invention. It is a front view which shows the external appearance shape of the heavy structure by the 5th Embodiment of this invention. It is a front view which shows the external appearance shape of the heavy structure by the 6th Embodiment of this invention. FIG. 7 is a diagram for explaining a heavy structure according to fifth and sixth embodiments of the present invention. (A) has shown the case where a heavy structure is slung up with the belt sling, and has shown, and (b) has shown the case where a heavy structure is slung with a wire rope and lifted. It is a front view which shows the external appearance shape of the heavy-weight structure by 7th Embodiment of this invention. It is a side surface schematic diagram which shows the external appearance shape of the conventional median strip. FIG. 17 is an enlarged end view of the XVII-XVII line shown in FIG. 16.

  FIG. 1 is a front view showing the external shape of a heavy structure according to the first embodiment of the present invention, FIG. 2 is a left side view of the heavy structure shown in FIG. 1, and FIG. 4 is a right side view of the heavy structure shown in FIG. 1, FIG. 4 is a plan view of the heavy structure shown in FIG. 1, and FIG. 5 is a cross-sectional view taken along the line V-V shown in FIG. is there.

First, referring to FIGS. 1 to 5, the heavy structure 10 is, for example, a precast concrete block extending in the longitudinal direction, is movably installed on the road surface 5, and is used as a median strip or the like. Heavy construction 10, a length _{L 0} in the longitudinal direction, approximately 2000 mm, a width _{W 0} in the lateral direction is 500 mm, the height _{H 0} is 450 mm, are set, respectively. A protruding portion 11 is formed on one of the longitudinal ends of the heavy structure 10 (that is, the left side surface), and a receiving portion 12 is formed on the other end (that is, the right side surface).

The upper surface 13 of the heavy structure 10 is formed with support insertion holes 15a and 15b for inserting and fixing support fences such as guard pipes, guard rails, and crossing prevention fences. The depth d of the column insertion holes 15a and 15b is set to 400 mm which is smaller than the height H ₀ (= 450 mm) of the heavy structure 10, and water is drained at the bottoms 16a and 16b of the column insertion holes 15a and 15b. Holes 17a and 17b are formed. The drain holes 17a and 17b penetrate from the bottom portions 16a and 16b of the column insertion holes 15a and 15b to the front surface 18 of the heavy structure 10.

  A first notch portion 21a and a second notch portion 21b that allow the first and second claws of the forklift to be inserted respectively from the lower surface 20 of the heavy structure 10 from the front surface 18 of the heavy structure 10 in the short direction. It is formed over the back surface 19.

  Further, a first sling guide groove 31a and a second sling guide for guiding the belt sling are provided substantially at the center in the longitudinal sectional view of the upper surfaces 22a and 22b of the first notch 21a and the second notch 21b, respectively. The groove 31b is formed from the front surface 18 to the back surface 19 of the heavy structure 10 in the short direction.

  Each of the first cutout portion 21a and the second cutout portion 21b has a trapezoidal shape that spreads downward in a longitudinal sectional view, and each of the first sling guide groove 31a and the second sling guide groove 31b It has a trapezoidal shape that expands downward in a cross-sectional view in the longitudinal direction.

The height _{H 1} of the first notch 21a is set larger than the height _{H 2} of the first sling guide groove 31a. The height H ₁ of the first notch 21a may be appropriately set so as to insertion claw of forklift. The height H ₂ of the first sling guide groove 31a may be appropriately set according to the thickness of the belt sling guides.

Further, the width W ₁ of the first notch 21a may be appropriately set according to the width of the pawl of the forklift, the width W ₂ of the first sling guide groove 31a, if appropriately set according to the width of the belt sling Good. The width W ₁ of the first notch 21a is set to be larger than the width W ₂ of the first sling guide groove.

  In addition, the width | variety, height, and shape of the 1st notch part 21a and the 2nd notch part 21b are set identically, The width | variety, height, and shape of the 1st sling guide groove 31a and the 2nd sling guide groove 31b Are set the same.

  If comprised in this way, since the nail | claw of a forklift can be inserted and lifted to the lower surface 20 of the heavy structure 10, or it can be hung by hanging on a crane through a sling, the stability on transport and installation efficiency improve. It becomes easy to move so that the road can be utilized in a desired state.

  In addition, since the first cutout portion 21a and the second cutout portion 21b fit the cross-sectional shape in the width direction of the forklift claw, the stability when the heavy structure 10 is lifted by the forklift claw is improved.

  Here, if there is no first sling guide groove 31a and second sling guide groove 31b, when the heavy structure 10 is lifted using a belt sling or the like, the position of the belt sling is not stable and the lifted state is unstable. There is a possibility.

  As described above, the heavy structure 10 is configured such that the first sling guide groove 31a and the second sling guide groove 31b fit the cross-sectional shape in the width direction of the belt sling. Stability is improved when suspending and suspending using the.

  FIG. 6 is a partial cross-sectional view showing a use state in which a guard pipe is provided on the heavy structure shown in FIG. 1, and FIG. 7 configures a central separation band by arranging the heavy structures shown in FIG. 1 side by side. FIG. 8 is a diagram showing a use state, and FIG. 8 is a diagram showing a state in which the heavy structure shown in FIG. 1 is lifted. (A) of FIG. 8 is a figure which shows the state which lifted the heavy structure by the belt sling, (b) is a figure which shows the state which lifted the heavy structure by the forklift.

  A specific use state of the heavy structure 10 will be described with reference to these drawings. First, referring to FIG. 6, the part below the line LL corresponds to the cross-sectional view taken along the line V-V shown in FIG.

  When the guard pipe 50 is provided on the heavy structure 10, the support columns 51 a and 51 b of the guard pipe 50 are inserted into the support column insertion holes 15 a and 15 b from the upper surface 13 and installed on the bottom portions 16 a and 16 b. Ring-shaped packings 52a and 52b are pushed into gaps formed between the columns 51a and 51b and the column insertion holes 15a and 15b to fix the columns 51a and 51b.

  Next, referring to FIG. 7, the protrusion 11 of the heavy structure 10B is brought into contact with the receiving portion 12A of the heavy structure 10A, and the protrusion of the heavy structure 10C is brought into contact with the receiving portion 12 of the heavy structure 10B. 11C is made to contact | abut, and heavy structure 10A-10C is arrange | positioned in a daisy chain over the longitudinal direction (namely, the advancing direction of the road surface 5). And the support | pillar 51a and 51b of the guard pipe 50 of the type installed in the some heavy structure 10 are each installed in the support | pillar insertion hole 15a of the heavy structure 10B, and the support | pillar insertion hole 15b of the heavy structure 10C. Since the method of installing the columns 51a and 51b is as described above, the description thereof will not be repeated here. In this way, a desired number of heavy structures 10 can be installed side by side to form a central separator.

  Next, a case where the heavy structure 10 is lifted and moved will be described with reference to FIG. When the heavy structure 10 is lifted and moved using the belt slings 55a and 55b, the belt slings 55a and 55b are moved to the first sling guide groove 31a and the second sling guide groove 31b, respectively, as shown in FIG. It is guided and slung on a crane (not shown) and moved in a state of being lifted upward.

  When the heavy structure 10 is lifted and moved by a forklift, the forklift tabs 56a and 56b are raised while being inserted into the notches 21a and 21b, respectively, as shown in FIG. Move while lifting up.

  When the heavy structures 10A to 10C are arranged, as described above, they may be moved by a forklift or a crane, and the heavy structures 10A to 10C are freely arranged according to the road conditions to form a central separation zone. can do. Further, when desired, the heavy structure 10 can be removed so that the road can be used extensively.

  FIG. 9 is a front view showing the appearance of the heavy structure 10 according to the second embodiment of the present invention. Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

First, referring to FIG. 9, in the heavy structure 10 according to this embodiment, first, the side wall 23a of the first cutout portion 21a is viewed from the front surface (the front view 22a of the first cutout portion 21a). It is connected by providing an angle theta ₁ of 120 degrees in the longitudinal direction of the cross section).

Further, the side wall 32a of the first sling guide groove 31a, to the upper surface 34a of the first sling guide groove 31a, is connected 120 degree angle theta ₂ to provided in the front view (longitudinal sectional view).

Note that angle between the upper surface 22a of the side wall 24a and a first notch 21a of the first notch 21a is also set at an angle theta _1, the upper surface 34a of the side wall 33a and the first sling guide groove 31a of the first sling guide groove 31a The angle between the _two is also set to the angle θ2.

  Moreover, the 2nd notch part 21b is the same shape as the 1st notch part 21a, and the 2nd sling guide groove 31b is the same shape as the 1st sling guide groove 31a.

  With this configuration, when the claw of the forklift is inserted into the first cutout portion 21a and the second cutout portion 21b, it becomes easier to insert the claw along the downwardly tapered taper structure formed by the side walls 23a and 24a. Since it becomes easy to fit the 1 notch part 21a and the 2nd notch part 21b, the positioning of the nail | claw at the time of insertion of the nail | claw of a forklift becomes easy.

  Further, when the belt sling is passed through the first sling guide groove 31a and the second sling guide groove 31b, the belt sling can be easily arranged along the taper structure which is widened downwardly formed by the side wall 32a and the side wall 33a. Since it becomes easy to fit into the sling guide groove 31a and the second sling guide groove 31b, positioning of the belt sling at the time of staking becomes easy.

  FIG. 10 is a front view showing the external shape of a heavy structure according to the third embodiment of the present invention. Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  First, referring to FIG. 10, in the heavy structure 10 according to this embodiment, the first sling guide groove 31a provided on the upper surfaces 22a and 22b of the first cutout portion 21a and the second cutout portion 21b, respectively. Each of the second sling guide grooves 31b has a semicircular shape as a shape recessed upward in front view (sectional view in the longitudinal direction).

  If comprised in this way, since the 1st sling guide groove 31a and the 2nd sling guide groove 31b fit the radial cross-sectional shape of a wire rope, a round sling, and a chain sling, sling using a wire rope, a round sling, and a chain sling Stability is improved.

  FIG. 11 is a front view showing the external shape of a heavy structure according to the fourth embodiment of the present invention. Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  Referring to FIG. 11, in the heavy structure 10 according to this embodiment, first, the first sling guide groove 31a provided on the upper surface 22a of the first notch portion 21a includes the belt sling groove 35a, the wire groove, and the like. 36a.

  The belt sling groove 35a is connected to the first cutout portion 21a and has a quadrangular shape in front view (sectional view in the longitudinal direction).

  The wire groove 36a is provided on the upper surface of the belt sling groove 35a and has a semicircular shape as a shape recessed upward in a front view (longitudinal sectional view).

  The second sling guide groove 31b provided on the upper surface 22b of the second notch 21b includes a belt sling groove 35b and a wire groove 36b.

  The belt sling groove 35b is connected to the second cutout portion 21b and has a quadrangular shape in front view (sectional view in the longitudinal direction).

  The wire groove 36b is provided on the upper surface of the belt sling groove 35b, and has a semicircular shape as a shape recessed upward in a front view (a cross-sectional view in the longitudinal direction).

  With this configuration, the belt sling grooves 35a and 35b fit the cross-sectional shape in the width direction of the belt sling, and the wire grooves 36a and 36b have a radial cross-sectional shape such as a wire rope, round sling, chain sling, etc. Fit.

  For this reason, it can respond to various slinging tools, such as a belt sling, a wire rope, a round sling, and a chain sling.

  FIG. 12 is a front view showing the appearance of a heavy structure according to the fifth embodiment of the present invention. Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  First, referring to FIG. 12, in the heavy structure 10 according to this embodiment, the first sling guide groove 31 a and the second sling guide groove 31 b are formed near the center of the heavy structure 10.

  More specifically, the first sling guide groove 31a is provided at the end on the second cutout portion 21b side on the upper surface 22a of the first cutout portion 21a, and the second sling guide groove 31b is formed at the second cutout portion 21b. The upper surface 22b is provided at the end portion on the first cutout portion 21a side.

  The operational effects of this embodiment will be described later together with the operational effects of a sixth embodiment described below.

  FIG. 13 is a front view showing the appearance of a heavy structure according to the sixth embodiment of the present invention. Note that the description is basically the same as that according to the third embodiment, and thus the difference will be mainly described.

  First, referring to FIG. 13, in the heavy structure 10 according to this embodiment, the first sling guide groove 31 a and the second sling guide groove 31 b are formed near the center of the heavy structure 10.

  More specifically, the first sling guide groove 31a is provided at the end on the second cutout portion 21b side on the upper surface 22a of the first cutout portion 21a, and the second sling guide groove 31b is formed at the second cutout portion 21b. The upper surface 22b is provided at the end portion on the first cutout portion 21a side.

  FIG. 14 is a diagram for explaining a heavy structure according to fifth and sixth embodiments of the present invention. (A) has shown the case where a heavy structure is slung up with the belt sling, and has shown, and (b) has shown the case where a heavy structure is slung with a wire rope and lifted.

  Referring to FIGS. 14A and 14B, when the heavy structure 10 is slung with belt slings 55a and 55b and wire ropes 57a and 57b at two points and lifted by a crane or the like, each of these is upward. As a result, a force F that draws a pair of belt slings and the like works.

  According to the fifth and sixth embodiments, when slung at two points of the first sling guide groove 31b and the second sling guide groove 31b and lifted by a crane or the like, the belt slings 55a, 55b and the wire rope 57a, The force F that draws 57b can be supported at the ends of the first cutout portion 21a and the second cutout portion 21b. For this reason, the lifting state of the heavy structure 10 is stabilized.

  FIG. 15 is a front view showing the appearance of a heavy structure according to the seventh embodiment of the present invention. Since the description is basically the same as that according to the fourth embodiment, the difference will be mainly described.

  First, referring to FIG. 15, in the heavy structure 10 according to this embodiment, the first belt sling groove 35a, the first wire groove 36a, and the second sling guide groove 31b of the first sling guide groove 31a. The second belt sling groove 35b and the second wire groove 36b are respectively formed near the center of the heavy structure 10.

  More specifically, the first belt sling groove 35a of the first sling guide groove 31a is provided at the end on the second sling guide groove 31b side on the upper surface 22a of the first notch portion 21a, and the first sling guide groove 31a. The first wire groove 36a of 31a is provided at the end on the second sling guide groove 31b side on the upper surface of the first belt sling groove 35a.

  Further, the second belt sling groove 35b of the second sling guide groove 31b is provided at an end portion on the first sling guide groove 31a side on the upper surface 22b of the second notch portion 21b, and the wire groove of the second sling guide groove 31b. 36b is provided on the end of the first belt guide groove 31a on the upper surface of the second belt sling groove 35b.

  If comprised in this way, the force F which draws a pair of belt sling and a wire rope can be supported in the edge part of the 1st belt sling groove | channel 35a and the 2nd belt sling groove | channel 35b. For this reason, the lifting state of the heavy structure 10 is stabilized.

  In each of the above embodiments, the heavy structure 10 is made of precast concrete. However, the heavy structure 10 may be made of other materials. May be manufactured.

  Moreover, although said each embodiment demonstrated having comprised the center separation band with the heavy structure 10, it is not restricted to this. The heavy structure 10 may be used for a separation band for separating an arbitrary lane or may be used for separating a walking road.

  Furthermore, in each of the embodiments described above, the heavy structure 10 is set to a specific size and shape, but may be set to another size and shape.

  Furthermore, in each of the embodiments described above, the weight structure 10 has the protrusion 11 and the receiving portion 12 formed thereon, but this configuration is not essential.

  Further, in each of the above embodiments, the heavy structure 10 is simply configured to be installed on the ground. However, a separate underground member is provided in the ground of the road so that the heavy structure 10 can be attached to the underground member. It may be.

  Further, although not described in the above embodiments, the first sling guide groove 31a and the second sling guide groove 31b are provided on the upper surfaces 22a and 22b of the first notch portion 21a and the second notch portion 21b, respectively. The position to be taken is not limited to the approximate center of the longitudinal sectional view and the center of the heavy structure 10, but is arbitrary.

  Furthermore, in the first embodiment described above, the heavy structure 10 has the column insertion holes 15a and 15b and the water drain holes 17a and 17b formed. Good.

  Further, in the first embodiment described above, the installation of the guard pipe 50 in the heavy structure 10 has been described, but the present invention is not limited to this. You may comprise so that installation objects, such as a guard rail and a crossing prevention fence, can be installed in the heavy structure 10. FIG.

  Furthermore, in each of the above-described embodiments, each of the first cutout portion 21a and the second cutout portion 21b has a trapezoidal shape that spreads downward in a cross-sectional view in the longitudinal direction, but is not limited thereto. The first cutout portion 21a and the second cutout portion 21b can be configured in any shape as long as the first cutout portion 21a and the second cutout portion 21b have such a shape that a pair of claws of a forklift can be inserted.

  Furthermore, in the first embodiment described above, each of the first sling guide groove 31a and the second sling guide groove 31b has a trapezoidal shape that spreads downward in a longitudinal sectional view. Not limited. Each of the first sling guide groove 31a and the second sling guide groove 31b can be configured in any shape as long as it has a shape capable of guiding a flat belt-like sling such as a belt sling. The same applies to the second, fourth, fifth, and seventh embodiments.

Further, in the second embodiment described above, the side walls 23a and 24a of the first cutout portion 21a are connected to the side walls 23a and 24a at an angle of 120 degrees with respect to the upper surface 22a of the first cutout portion. Although explained about this, it is not limited to this. The connection angle θ ₁ can be set to 120 ° or more and less than 180 °. Also, one of the side walls 23a and 24a of the first notch 21a is set to an angle theta ₁ of the connection, the other may be a configuration that is set to a different angle. The same applies to the second cutout portion 21b. Further, in the third to seventh embodiments, such a connection angle can be adopted.

Further, in the second embodiment described above, the side walls 32a and 33a of the first sling guide groove 31a are provided with an angle of 120 degrees with respect to the upper surface 34a of the first sling guide groove 31a. Although the connection has been described, the present invention is not limited to this. The connection angle θ ₂ is 120 degrees and can be set to less than 180 degrees. Moreover, the structure by which any one of the side walls 32a and 33a of the 1st sling guide groove 31a is set to angle (theta) ₂ , and the other is set to another angle may be sufficient. The same applies to the second sling guide groove 31b. Further, in the third to seventh embodiments, such a connection angle can be adopted.

  Furthermore, in the third embodiment described above, the first sling guide groove 31a and the second sling guide groove 31b each have a semicircular shape as a shape recessed upward in a longitudinal sectional view. However, it is not limited to this. The first sling guide groove 31a and the second sling guide groove 31b may have other curved surfaces as long as each of the first sling guide groove 31a and the second sling guide groove 31b has a shape recessed upward in a longitudinal sectional view. The same applies to the fourth, sixth, and seventh embodiments.

DESCRIPTION OF SYMBOLS 10, 10A, 10B, 10C ... Heavy-weight structure 13 ... Upper surface 20 ... Lower surface 21a, 21b ... Notch 22a, 22b ... Upper surface 23a, 24a ... Side wall 31a, 31b ... Sling guide groove 32a, 33a ... Side wall 34a ... Upper surface 35a, 35b... Belt sling groove 36a, 35b... Wire groove In the drawings, the same reference numerals denote the same or corresponding parts.

Claims (4)

A heavy structure extending in the longitudinal direction and movably installed on the road,
First and second cutout portions formed in a short direction on the lower surface of the heavy structure and allowing the first and second claws of the forklift to be inserted, respectively;
First and second sling guide grooves formed on the upper surfaces of the first and second cutout portions for guiding sling slings,
Bei to give a,
The first sling guide groove is
A first belt sling groove connected to the first notch and having a quadrangular shape in cross-sectional view in the longitudinal direction;
A first wire groove provided on the upper surface of the first belt sling groove and having a curved surface that is recessed upward in a longitudinal sectional view;
The second sling guide groove is
A second belt sling groove connected to the second notch and having a quadrangular shape in a cross-sectional view in the longitudinal direction;
Wherein provided on the upper surface of the second belt sling groove comprises a second wire groove having a curved surface which is recessed upwardly in the longitudinal direction of the cross section, the heavy weight structural material. In the first sling guide groove,
The first belt sling groove is provided at an end on the second sling guide groove side on the upper surface of the first notch,
The first wire groove is provided on an end of the second belt guide groove side on the upper surface of the first belt sling groove,
In the second sling guide groove,
The second belt sling groove is provided at an end on the first sling guide groove side on the upper surface of the second notch,
The second wire groove in the upper surface of the second belt sling groove, provided at the end of the first sling guide groove side, claim 1 heavy construction according. Each of the first and second cutouts has a trapezoidal shape that extends downward in a cross-sectional view in the longitudinal direction, and each side wall of each of the first and second cutouts is 120 with respect to the lower surface. degrees are connected over angles provided, according to claim 1 or claim 2 Symbol mounting of heavy construction. Each of the first and second belt sling grooves has a trapezoidal shape that extends downward in a cross-sectional view in the longitudinal direction, and each side wall of each of the first and second belt sling grooves has an upper surface. The heavy structure according to any one of claims 1 to 3, wherein the heavy structure is connected with an angle of 120 degrees or more.

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