JP3196222U - Sleepers - Google Patents

Abstract

Provided is a sleeper that is lightweight but has high strength, good load bearing capacity, good durability, and simple and easy handling. SOLUTION: A hollow extruded material made of an aluminum alloy, a peripheral wall 2 constituting four surfaces of a square tube whose outer shape of a cross section in the longitudinal direction is formed in a square shape, and walls 2A of the four peripheral walls 2 facing each other. 2C and the walls 2B and 2D are connected to each other and have a reinforcing wall 4 composed of a vertical wall 4A and a horizontal wall 4B arranged in a cross shape in the internal space 3 of the square tube, and the peripheral wall 2 The wall thicknesses of the four walls 2A constituting the four-wall peripheral wall 2 are the same, and the wall thicknesses of the vertical wall 4A and the horizontal wall 4B are the same and the same throughout. , 2B, 2C, 2D are provided with bolt through holes 5. [Selection] Figure 1

Description

  The present invention relates to sleepers. More specifically, the present invention relates to a sleeper suitable for use as a stand for temporary placement when, for example, lifting (loading) or transporting heavy objects such as large machinery. In addition, in this invention, a sleeper is used with the meaning also including the square tube etc. which are utilized as a lever material, and does not mean that a raw material is wood.

  As a conventional sleeper, for example, as shown in FIG. 6, it is a sleeper on which a load is placed in order to secure a space for inserting a fork between the load and the ground when the load is transported by a forklift. There is a core material 101 composed of a stack of tatami mats cut into two pieces and a vinyl cover 102 covering the core material 101.

Japanese Utility Model Publication No. 7-13733

  However, the sleeper disclosed in Patent Document 1 cannot be said to have sufficient strength as a stand for temporary placement used when, for example, lifting (unloading) or transporting heavy objects such as large machinery. There is. In the sleeper of Patent Document 1, it is considered that the compressive strength in the direction perpendicular to the direction is much smaller than the compressive strength in the direction in which a plurality of tatami mats are overlapped (that is, the vertical direction in FIG. 6). For this reason, in order to demonstrate the expected strength, it is necessary to carefully check the vertical and horizontal orientation when installing the sleepers, and it cannot be said that the handling is simple, and as a result, the vertical and horizontal orientation of the installation If you make a mistake, there is a problem that the expected strength will not be exhibited, causing load collapse and collapse.

  In the sleeper of Patent Document 1, since it is not a hard material, there is a risk that it may be damaged by rubbing or scratching during repeated use, and it cannot be said that durability is sufficient. is there. In particular, when the vinyl cover 102 is damaged, there is a problem that rainwater or the like penetrates into the interior and the tatami mat is corroded to reduce the strength.

  In the sleeper of patent document 1, since the mechanism connected mutually when a plurality of sleepers are used by being piled up and down or arranged side by side is not provided, the size of the object to be placed is not provided. There is a problem that it cannot be said that the handling when a plurality of sleepers are used in combination in order to adjust the overall dimensions of the cradle according to the above is simple and easy. Moreover, since the heartwood is a tatami mat, the weight when handling a plurality of sleepers becomes large, and it cannot be said that the handling is easy.

  Therefore, the sleeper of Patent Document 1 cannot be said to have a sufficiently high strength that can be applied to any application, and cannot be said to have sufficient load resistance depending on the application. Moreover, it is difficult to say that the handling for at least achieving the expected strength is simple. The sleeper disclosed in Patent Document 1 is not suitable for repeated use and handling of multiple items (in other words, bundled together). It is hard to say that the nature is high.

  Accordingly, an object of the present invention is to provide a sleeper that is lightweight but has high strength, good load bearing capacity, good durability, and simple and easy handling.

  In order to achieve such an object, the sleeper of the present invention is a hollow extruded material made of an aluminum alloy and includes a peripheral wall that forms four surfaces of a square tube whose outer shape of a longitudinally orthogonal cross section is formed in a square shape, and a four-surface peripheral wall. It has a reinforcing wall consisting of a vertical wall and a horizontal wall that connect mutually facing walls and cross each other and are arranged in a cross shape in the internal space of the square tube, and the wall thickness of the peripheral wall is generally reduced. And the wall thickness of the vertical wall and the horizontal wall is the same as each other and the same throughout, and bolt through holes are provided in at least two of the four peripheral walls facing each other. I am trying to do it.

  Therefore, according to this sleeper, since the whole is formed of an aluminum alloy, it is lightweight, and wear, breakage and corrosion during use are prevented. In addition, the structure is simple, the manufacturing is easy, and the manufacturing cost is suppressed.

  According to this sleeper, since the reinforcing wall formed by crossing the vertical wall and the horizontal wall in a cross shape is formed in the internal space, high strength is exhibited.

  According to this sleeper, the outer shape of the cross section in the longitudinal direction is formed in a square shape, and the thickness of the peripheral wall, the vertical wall and the horizontal wall is the same throughout, and the vertical direction and the horizontal direction in the longitudinal cross section are the same. Therefore, it is not necessary to pay attention to the vertical and horizontal orientation of the sleepers when a plurality of sleepers are arranged and stacked.

  According to this sleeper, moreover, a plurality of sleepers are formed by connecting the sleepers stacked one above the other or using the bolt through holes provided in the peripheral wall to each other and connecting the sleepers arranged on the left and right to each other to form a block. When used in combination, the strength as a stand for temporary placement is increased, and as a result, the reliability is improved.

  The sleeper of the present invention may be provided with a pair of detachable hooks at both longitudinal ends of one of the four peripheral walls. In this case, the hook is grasped by the operator and the sleeper is carried, or in some cases, the hook is hung on a heavy machine such as a crane and the sleeper is lifted or hung.

  In the sleeper of the present invention, the thickness of the vertical wall and the horizontal wall constituting the reinforcing wall may be 1/40 to 1/10 of the length of one side of the square which is the outer shape of the cross section in the longitudinal direction. . In this case, the thickness of the reinforcing wall is adjusted to an appropriate range.

  The sleeper of the present invention is a square whose cross section in the longitudinal direction is 100 to 200 mm on a side, and the wall thickness of the vertical and horizontal walls constituting the peripheral wall and the reinforcing wall is 3 to 7 mm. good. In this case, the wall thickness of the peripheral wall and the reinforcing wall is adjusted to an appropriate range.

  The sleeper of the present invention has a square shape with a 100 mm side in the longitudinal direction and a thickness of 5 mm between the vertical wall and the side wall constituting the peripheral wall and the reinforcing wall, The outer shape may be a square with a side of 150 mm, and the wall thickness of the vertical and horizontal walls constituting the peripheral wall and the reinforcing wall may be 5 mm. In these cases, the wall thickness of the peripheral wall and the reinforcing wall is adjusted to an appropriate range.

  According to the sleeper of the present invention, the entire body is made of an aluminum alloy, so it is lightweight, can be used repeatedly while preventing wear and damage during use, and corroded by rainwater. In addition, since it is nonflammable, it is possible to improve durability as a sleeper, and to improve versatility. In addition, since the structure is simple and the manufacturing is easy and the manufacturing cost can be suppressed, the versatility can be improved also in this respect.

  According to the sleeper of the present invention, a reinforcing wall formed by crossing the vertical wall and the horizontal wall in the cross is formed in the internal space, so that high strength can be exhibited and load resistance can be increased. become. Therefore, it can be used as a sleeper suitable for lifting and transporting heavy objects.

  According to the sleeper of the present invention, it is not necessary to pay attention to the orientation of the sleeper when the plurality of sleepers are arranged and stacked, so that the plurality of sleepers are used in a bundle (bundled). It becomes possible to make the handling simple and easy.

  According to the sleeper of the present invention, the plurality of sleepers are connected to each other to form a block, thereby increasing the strength as a stand for temporary placement when using a plurality of sleepers in combination, and as a result, reliable. In this respect, versatility can be improved.

  In addition, the sleeper of the present invention may be provided with a detachable hook. In this case, the operator can easily carry it, and it can be lifted and suspended by heavy equipment, thereby improving convenience. become.

  Further, the sleeper of the present invention may be configured such that the wall thickness of the vertical wall and the horizontal wall constituting the reinforcing wall is 1/40 to 1/10 of the outer dimension of the peripheral wall. It becomes possible to make the wall thickness appropriate.

  Further, the sleeper of the present invention is such that the outer wall has a square shape with an outer dimension of 100 to 200 mm on one side and the wall thickness between the vertical wall and the side wall constituting the peripheral wall and the reinforcing wall is 3 to 7 mm. The outer wall has a square shape with a side of 100 mm and the wall thickness of the vertical and horizontal walls constituting the peripheral wall and the reinforcing wall is 5 mm, or the outer shape of the peripheral wall is a square with a side of 150 mm. The wall thickness of the vertical wall and the horizontal wall constituting the peripheral wall and the reinforcing wall may be 5 mm. In these cases, the outer dimension can be made highly versatile and the outer dimension can be increased. It is possible to make the wall thickness of the peripheral wall and the reinforcing wall with respect to the appropriate thickness.

It is a figure which shows an example of embodiment of the sleeper of this invention, and is a side view orthogonal to a longitudinal direction. It is a side view in alignment with the longitudinal direction of the sleeper of embodiment, and is a fragmentary sectional view in alignment with the II-II 'line of FIG. It is a side view orthogonal to the longitudinal direction which shows the state made into the block by stacking the sleepers of embodiment up and down, and connecting. It is a side view orthogonal to the longitudinal direction which shows the state made into the block by arranging the sleepers of embodiment side by side and connecting them. It is a figure which shows an example of embodiment provided with the hook of the sleeper of this invention, and is a fragmentary sectional view regarding the side surface along a longitudinal direction. It is a partially cutaway perspective view showing a conventional sleeper.

  Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.

  1 to 5 show an example of an embodiment of a sleeper according to the present invention. This sleeper 1 is a hollow extruded material made of an aluminum alloy, and has a peripheral wall 2 that forms four surfaces of a square tube whose outer shape in a cross section in the longitudinal direction is formed in a square shape, and a wall 2A that faces each other among the four peripheral walls 2 , 2C and the walls 2B, 2D are connected to each other and intersect with each other, and have a reinforcing wall 4 including a vertical wall 4A and a horizontal wall 4B arranged in a cross shape in the internal space 3 of the square tube. The four walls constituting the four-wall peripheral wall 2 are the same in thickness, and the thickness of the vertical wall 4A and that of the horizontal wall 4B are the same as each other and are the same throughout. Bolt through holes 5 are provided in 2A, 2B, 2C, 2D.

  The sleeper 1 is a tubular product (specifically, a tube having a square outer cross section in the longitudinal direction) obtained by hollow extrusion processing of an aluminum alloy, and a vertical wall 4A is formed in the internal space 3 of the tube during hollow extrusion processing. And the lateral wall 4B are integrally formed so as to be arranged in a cross shape. The reinforcing wall 4 is sometimes called a rib.

  The sleeper 1 has four peripheral walls 2 configured by connecting the long sides of four walls 2A, 2B, 2C, and 2D each having a rectangular shape, and an internal space 3 is formed inside the peripheral wall 2. The

  The reinforcing wall 4 includes a vertical wall 4A and a horizontal wall 4B. The vertical wall 4A is provided at a central position in the left-right direction of the internal space 3, and the horizontal wall 4B is provided at a central position in the vertical direction of the internal space 3. In other words, the reinforcing wall 4 composed of a pair of vertical walls 4A and horizontal walls 4B is formed by the opposing walls 2A and 2C and the central portions of the walls 2B and 2D facing each other among the four surfaces constituting the peripheral wall 2. They are connected to each other and intersect with each other to be arranged in a cross shape. Therefore, the side view perpendicular to the longitudinal direction of the sleepers 1 has a “rice” shape.

  The internal space 3 is divided into four quadrangular columnar chambers 3A, 3B, 3C, 3D by vertical and horizontal reinforcing walls 4 (4A, 4B) arranged in a cross shape.

  The inner corners (entrance corners) of the intersecting part of the vertical and horizontal wall surfaces are formed into a curved surface with a radius of about 5 to 10 mm, for example, so as to make the shape easy to extrude and reduce stress concentration. Excellent loading capacity can be ensured.

  Further, bolt through holes 5 are provided at positions of the four walls 2 </ b> A, 2 </ b> B, 2 </ b> C, and 2 </ b> D constituting the peripheral wall 2 near the longitudinal ends of the sleeper 1.

  In the present embodiment, the bolt through holes 5 are provided in the four (that is, all) walls 2A, 2B, 2C, and 2D that constitute the peripheral wall 2, but the four walls that constitute the peripheral wall 2 are The bolt through hole 5 may be provided only in the two walls 2A, 2C (or 2B, 2D) facing each other. That is, in the present invention, the bolt through holes 5 may be provided in at least two walls (that is, the walls 2A and 2C or the walls 2B and 2D) of the four peripheral walls 2 facing each other.

  In this embodiment, two bolt through holes 5 are provided at one end in the longitudinal direction of one wall. However, one bolt through hole 5 is provided at one end of one wall. Alternatively, three or more bolt through holes 5 may be provided.

  However, although it is possible to connect the sleepers if there is at least one bolt through hole 5 at one end of one wall, it is preferable that two or more bolt through holes 5 are provided.

  By providing the bolt through hole 5, the plurality of sleepers 1 are simply and firmly connected to each other. Specifically, for example, as shown in FIG. 3, two sleepers 1 stacked one above the other through a through hole 5 provided in a wall 2 </ b> C corresponding to the lower surface of the upper sleeper 1 in the installed state shown in FIG. 3. It is connected by a bolt 6 penetrating in the vertical direction and through a bolt through hole 5 provided in the wall 2A corresponding to the upper surface of the lower sleeper 1 and a nut 7 fitted in the male thread portion of the bolt 6. . In addition, when a plurality of sleepers 1 are stacked and used as in the example shown in FIG. 3, when there is a risk of falling due to insufficient stability against rolling, this is indicated by a one-dot chain line in FIG. 3. In this way, the sleepers 1 may be further connected by being arranged on the left and right with respect to the lowermost sleepers 1.

  Specifically, for example, as shown in FIG. 4, a bolt through hole provided in a wall 2 </ b> B corresponding to the right surface of the left sleeper 1 in the installed state shown in FIG. Are connected by a bolt 6 penetrating a bolt through hole 5 provided in a wall 2D corresponding to the left surface of the right sleeper 1 and a nut 7 fitted to a male screw portion of the bolt 6. The

  In the example shown in FIG. 3, two sleepers 1 stacked one above the other are connected to each other, and in the example shown in FIG. 4, two sleepers 1 arranged side by side are connected to each other. Three or more sleepers 1 may be stacked one above the other or connected side by side. Furthermore, bolt walls 5 are provided in all the walls 2A, 2B, 2C, 2D so that a plurality (specifically, four or more) of sleepers 1 are stacked one above the other and connected side by side. May be.

  The length, width, and height of the sleepers 1 and the thicknesses of the peripheral wall 2 and the reinforcing wall 4 are not limited to specific dimensions, and are set as appropriate according to the application.

  Specifically, for example, it is conceivable that the length of the sleepers 1 is set in the range of several tens of centimeters to several meters.

  The sleeper 1 is also considered to be formed in a square shape having a cross section in the longitudinal direction orthogonal to the side of about 100 to 200 mm.

  Further, the thickness of the reinforcing wall 4 (specifically, the vertical wall 4A and the horizontal wall 4B) is in the range of about 1/40 to 1/10 of the outer dimension of the longitudinal cross section, preferably the outer shape of the longitudinal cross section. It may be set in the range of about 1/30 to 1/20 of the dimension.

  Specifically, for example, the thickness of the peripheral wall 2 and the reinforcing wall 4 may be set in a range of about 3 to 7 mm. It should be noted that the strength in the vertical direction and the strength in the left-right direction are the same in the longitudinal cross section in the state where it is installed for use (that is, the longitudinal direction of the sleepers 1 is horizontal or roughly horizontal). The wall thickness of the peripheral wall 2 is preferably the same over the entire length, and the wall thicknesses of the vertical wall 4A and the horizontal wall 4B are preferably the same and the same over the entire length.

  Based on the above, regarding the dimensions of the sleepers 1, one side of the square that is the outer shape of the cross section in the longitudinal direction is set to 100 mm, and the thickness of the vertical wall 4A and the horizontal wall 4B of the reinforcing wall 4 is set to 5 mm. As a suitable example, one side of the square which is the outer shape of the orthogonal cross section is set to 150 mm, and the thickness of the vertical wall 4A and the horizontal wall 4B of the reinforcing wall 4 is set to 5 mm.

  The outer shape of the cross section in the longitudinal direction is formed in a square and the vertical strength and the horizontal strength in the installed state are the same, so that a plurality of sleepers 1 are arranged and stacked. There is no need to pay attention to the vertical and horizontal orientation of the sleepers 1 at this time.

  As a material of the sleeper 1, an aluminum alloy is used, and it is not limited to a specific type as long as it is an aluminum alloy, but is preferably a high-strength aluminum alloy. Specifically, for example, an A6000-based Al—Si—Mg-based material containing Si 0.20 to 0.9 [wt%] and Mg 0.40 to 0.9 [wt%], with the balance being aluminum and inevitable impurities. An alloy is preferable, and a T5 tempered material made of 6N01 alloy is particularly preferable. The use of 6O63 alloy is also preferred.

  The sleeper 1 may be provided with a detachable hook 10 that can be attached or detached as required depending on the mode of use on at least one of both ends in the longitudinal direction (that is, the hook is It is not an essential component in the present invention to be provided).

  Specifically, for example, as shown in FIG. 5, the hook 10 is made using a bolt through hole 5 or another hole (not shown) provided separately from the bolt through hole 5. You may make it attachable as needed.

  In the example shown in FIG. 5, two bolt through holes 5 are formed on both sides of the vertical wall 4 </ b> A (see FIG. 1), and male screws are cut at the base end portions at the left and right ends of the U-shaped hook 10. Bolt part 10a is formed. Then, after the left and right bolt portions 10 a, 10 a pass through the left and right bolt through holes 5, 5, the nut 11 is screwed into each, thereby fixing the hook 10 to the sleeper 1.

  The shape and fixing structure of the hook 10 are not limited to a specific shape / structure, and a hook or fixing structure having a shape suitable for work is appropriately selected.

  The hook 10 is provided on the sleeper 1 so that the operator can grab the hook 10 and carry the sleeper 1 or, depending on the case, the hook 10 is hung on a heavy machine such as a crane and the sleeper 1 is lifted and hung. In other words, the sleeper 1 can be easily transported and moved to improve convenience.

  According to the sleeper 1 configured as described above, since the whole is formed of an aluminum alloy, it is lightweight, and can be used repeatedly while preventing wear and breakage during use. Since it is not corroded by rainwater and is nonflammable, it is possible to improve durability as a sleeper and to improve versatility. In addition, since the structure is simple and the manufacturing is easy and the manufacturing cost can be suppressed, the versatility can be improved also in this respect.

  According to the sleeper 1 described above, the reinforcing wall 4 in which the vertical wall 4A and the horizontal wall 4B cross each other is formed in the internal space 3, so that high strength can be exhibited and load resistance can be increased. It becomes possible to increase. Therefore, it can be used as a sleeper suitable for lifting and transporting heavy objects.

  According to the sleeper 1 described above, the outer shape of the cross section in the longitudinal direction is formed in a square shape, and the wall thickness of the peripheral wall 2, the vertical wall 4A, and the horizontal wall 4B are the same throughout, and Since the strength in the vertical direction and the horizontal direction is the same, and there is no need to pay attention to the vertical and horizontal orientation of the sleepers 1 when the sleepers 1 are arranged and stacked, the sleepers 1 are grouped together ( It is possible to simplify and facilitate handling when used in a bundle.

  According to the sleeper 1 described above, using the bolt through holes 5 provided in the peripheral wall 2, the sleepers 1 stacked one above the other or the sleepers 1 arranged side by side are mutually connected and blocked. Therefore, it is possible to increase the strength as a stand for temporary placement when a plurality of sleepers 1 are used in combination, and to increase the reliability. Therefore, it is possible to appropriately adjust the overall dimensions of the receiving stand according to the size of the object to be placed and the heavy machinery used for lifting / conveying, and as the receiving stand at that time Strength and reliability can be ensured.

  Although the above-described embodiment is an example of a preferred embodiment of the present invention, the specific embodiment of the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the gist of the present invention. It can be implemented.

DESCRIPTION OF SYMBOLS 1 Sleeper 2 Peripheral wall 2A, 2B, 2C, 2D Wall which comprises a peripheral wall 3 Internal space 4 Reinforcement wall 4A Vertical wall which comprises a reinforcement wall 4B Lateral wall which comprises a reinforcement wall 5 Bolt through-hole 6 Bolt 7 Nut 10 Hook 10a Bolt part 11 Nut

Claims (6)

  A hollow extruded material made of aluminum alloy that connects the peripheral walls that form the four sides of a square tube whose cross section in the longitudinal direction is a square and the mutually opposing walls of the four peripheral walls and crosses each other. And a reinforcing wall composed of a vertical wall and a horizontal wall disposed in a cross shape in the internal space of the square tube, and the wall thickness of the peripheral wall is the same throughout and the vertical wall A sleeper characterized in that the thickness of the horizontal wall is the same as that of the horizontal wall and is the same throughout, and bolt through holes are provided in at least two of the four peripheral walls facing each other. .   The sleeper according to claim 1, wherein a pair of detachable hooks are provided at both longitudinal ends of one of the four peripheral walls.   The wall thickness of the said vertical wall and the said horizontal wall which comprises the said reinforcement wall is 1/40-1/10 of the length of one side of the square which is the external shape of a longitudinal cross section. The described sleepers.   The outer shape of the cross section in the longitudinal direction is a square having a side of 100 to 200 mm, and the thickness of the vertical wall and the horizontal wall constituting the peripheral wall and the reinforcing wall is 3 to 7 mm. The sleeper according to Item 1.   The outer shape of the cross section in the longitudinal direction is a square having a side of 100 mm, and the thickness of the vertical wall and the horizontal wall constituting the peripheral wall and the reinforcing wall is 5 mm. Sleepers.   The outer shape of the cross section in the longitudinal direction is a square having a side of 150 mm, and the wall thickness of the vertical wall and the horizontal wall constituting the peripheral wall and the reinforcing wall is 5 mm. Sleepers.

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