JP2023144508A - Operation cradle for heavy machine - Google Patents

Abstract

To provide an operation cradle for a heavy machine capable of easily forming a support surface to be horizontal or approximately horizontal on a slop surface.SOLUTION: An operation cradle 1 for a heavy machine is provided with a body part 11 and a load dispersion plate 12. The body part 11 comprises an upper surface 11t forming a support surface SF and a slop bottom surface 11b placed to face a slop surface IS with an angle A corresponding to a slop angle α of the slop surface IS when the heavy machine HM is installed on the slop surface IS. The load dispersion plate 12 has a tip part 12f projecting from a tip 11f of the body part 11 and placed on the slop surface ISm and has elasticity bending along the upper surface 11t of the body part 11 and the slop surface IS under the load of the heavy machine HM. The upper surface 11t of the body part 11 has an upper surface tip part 11tf and an upper surface rear part 11tr. The upper surface tip part 11tf is inclined relative to the upper surface rear part 11tr such that an angle between the upper surface tip part 11tf and the slop surface IS is larger than that between the upper rear part 11tr and the slope surface IS.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a work rack for heavy machinery.

BACKGROUND ART Horizontal installation structures for crawler cranes have been known for some time. For example, Patent Document 1 below describes a horizontal installation structure in which a crawler crane used on an inclined surface is installed horizontally or substantially horizontally using an inclined gantry (Claim 1, paragraph 0008, etc.). The inclined gantry is composed of a strip-like iron plate, a pair of support frames, and a pair of jack devices.

The strip-shaped iron plate is laid in the direction of the slope of the slope. The above-mentioned pair of support frames are arranged along both side edges of the strip-shaped iron plate to support the side edges, and are arranged side by side with an interval width that allows the crawler of the crawler crane to move. Ru. The pair of jack devices are installed on the outside of each of the pair of support frames at the lower part in the gradient direction, and raise and lower the support frames together with the strip-shaped iron plate.

Further, this conventional horizontal installation structure includes a wedge-shaped camber member that is inserted from below in the slope direction into the gap between the strip-like iron plate that has been lifted up by jacking up with a jack device and the slope surface. This wedge-shaped camber member has an inclination angle that corresponds to the angle of inclination of the inclined surface.

In this conventional horizontal installation structure, a pair of inclined gantry is installed at the installation position of the pair of left and right crawlers of the crawler crane, and the rear part of the left and right crawlers in the moving direction is a strip-shaped iron plate of the pair of inclined gantry. Move the crawler crane until each person is on board. Thereafter, by jacking up the lower part of the support frame in the gradient direction, the strip-shaped iron plate on which the crawler is mounted is arranged horizontally or approximately horizontally. Then, wedge-shaped camber members are inserted into the gaps between the strip-shaped iron plates and the inclined surface created by jacking up, and the crawler crane is installed horizontally or approximately horizontally.

Furthermore, scaffolding materials for heavy machinery for sloped surfaces that are equipped with self-propelled means are known. The scaffolding material for heavy machinery described in the following Patent Document 2 has a generally wedge-shaped outline in a side view, and one side of the outline is the part that faces the tracks or wheels of the heavy equipment when it is placed on top of the heavy equipment. The portion facing the slope of the surface is the other side of the contour (claims 3 and 6, paragraphs 0015 and 0016, etc.).

Japanese Patent Application Publication No. 2012-197145 Japanese Patent Application Publication No. 2016-17366

In the conventional horizontal installation structure described in Patent Document 1, when installing the pair of inclined gantry, it is necessary to lift the strip iron plate and the pair of support frames with a crawler crane, making the installation work complicated. In addition, it is necessary to balance the left and right strip-shaped iron plates on which the crawler crane is mounted, and jack up the lower part of the support frame in the slope direction using a jacking device, making the horizontal installation of the crawler crane very complicated. Become.

Furthermore, the conventional scaffolding material for heavy machinery described in Patent Document 2 is intended to be used for heavy machinery equipped with a jack-up device. Specifically, when using this conventional scaffolding material for heavy machinery, first, each jack-up device provided on the lower traveling body of the crane is operated to jack up the crane so that the crane is almost completely tilted. Thereafter, the scaffolding material for heavy machinery, which has been prepared in advance and has a substantially wedge shape in plan view, is lifted by a matching crane and moved to the direction directly behind the crane.

Then, with the sharp end side of the scaffold for heavy equipment facing toward the crane, move it in the horizontal direction and place a part of the scaffold near the end of the heavy equipment onto the bottom of the crane's track and the lining surface. Insert it into the wedge-shaped space between the two. That is, in order to install this conventional scaffolding material for heavy machinery, in addition to heavy machinery such as a crane that rides on the scaffolding material for heavy machinery, a matching crane for installing the scaffolding material for heavy machinery is required.

The present disclosure provides a work platform for heavy machinery that can easily form a horizontal or nearly horizontal support surface on an inclined surface.

One aspect of the present disclosure is a work platform for heavy machinery including a main body made of foamed resin and a load dispersion plate installed on the main body, wherein the main body is arranged on an inclined surface on which the heavy machine works. an upper surface that forms a horizontal support surface or a support surface that is closer to horizontal than the inclined surface when installed on the inclined surface; a sloped bottom surface disposed opposite to a surface, and the load dispersion plate protrudes from the tip of the main body portion disposed above the slope direction of the sloped surface and is disposed on the sloped surface. a tip, and has elasticity to bend along the upper surface and the inclined surface of the main body under the load of the heavy machinery, and the upper surface of the main body is adjacent to the tip of the main body. an upper surface tip portion, and an upper surface rear portion adjacent to the rear end of the main body portion on the opposite side from the top surface, and when the main body portion is installed on the slope surface, the upper surface tip portion and the slope For heavy machinery, the top surface tip part is inclined with respect to the top surface rear part so that the angle between the top surface and the top surface is larger than the angle between the top surface rear part and the inclined surface. It is a work platform.

In the work platform for heavy machinery of the above aspect, the main body portion forming the support surface of the heavy machinery is made of foamed resin. Therefore, the main body made of foamed resin, which is lighter than metal or wood, can be carried by the worker himself and installed on a slope where heavy machinery such as a crane is working. Further, when the main body is installed on an inclined surface, the inclined bottom surface of the main body, which is inclined with respect to the upper surface of the main body at an angle corresponding to the inclination angle of the inclined surface, is opposed to the inclined surface. Thereby, the upper surface of the main body installed on the inclined surface can form a support surface that is horizontal or closer to horizontal than the inclined surface. Note that the inclination angle of the inclined surface is the angle of inclination of the inclined surface from the horizontal plane.

Furthermore, in the work stand for heavy machinery of the above aspect, the support surface formed by the upper surface of the main body supports the heavy machinery via the load dispersion plate installed on the main body. As a result, the load of the heavy machine that performs work on the load distribution plate is distributed by the load distribution plate, and acts uniformly over a wide range of the upper surface of the main body on which the load distribution plate is installed. Therefore, according to the work rack for heavy machinery of the above aspect, it is possible to prevent stress concentration on the upper surface of the main body due to the load of the heavy equipment, and prevent damage to the main body made of foamed resin. It is possible to support large heavy machinery.

Furthermore, when the main body of the heavy machinery work platform of the above aspect is installed on the slope, the slope and the top surface of the main body are adjacent to each other at the tip of the main body, which is disposed on the upper side in the direction of inclination of the slope. Fit. Here, the slope direction of the slope is a direction along the maximum slope line of the slope, and is a direction in which the slope of the slope is maximum. In this state, the inclined surface is inclined at an inclination angle of the inclined surface or an angle close thereto with respect to the upper surface of the main body that is horizontal or more horizontal than the inclined surface. Further, the tip of the load dispersion plate installed on the upper surface of the main body protrudes from the tip of the main body and is arranged on the inclined surface.

Therefore, when moving heavy equipment from an inclined surface onto the main body of a work platform for heavy equipment, it rides on the tip of the load dispersion plate placed on the inclined surface, and then is placed on top of the main body. Move onto the load distribution plate. At this time, the load distribution plate has the elasticity to bend along the upper surface and the inclined surface of the main body under the load of the heavy equipment, so the tip of the load distribution plate is elastically deformed into a concave curved shape, and the load distribution plate Increase contact area with heavy equipment. Therefore, when the heavy equipment runs over the load distribution plate installed on the main body from an inclined surface, the load acting on the load distribution plate is dispersed, and the stress acting from the load distribution plate on the tip of the main body is reduced. Damage to the tip of the main body made of foamed resin can be prevented.

Furthermore, in the heavy machinery work rack of the above aspect, the upper surface of the main body includes an upper surface tip portion adjacent to the tip of the main body portion, and an upper surface rear portion adjacent to the rear end of the main body on the opposite side from the front end of the main body portion. ,have. Then, with the main body installed on the inclined surface, the tip of the upper surface is placed on the upper surface so that the angle between the tip of the upper surface and the inclined surface is larger than the angle between the rear portion of the upper surface and the inclined surface. It is slanted towards the rear. With this configuration, the angle between the tip of the top surface and the inclined surface and the angle between the tip of the top surface and the rear portion of the top surface are two perpendicular angles, that is, 180 degrees, from the angle between the rear portion of the top surface and the slope. The angle can be close to (π radians).

As a result, when the heavy equipment moves from an inclined surface onto the main body of the heavy equipment work platform, it rides on the tip of the load dispersion plate placed on the inclined surface, and then rides on the tip of the top surface of the main body. Move onto the load distribution plate placed above. This makes it possible to support the load dispersion plate, which bends under the load of the heavy machinery, over a wider range of the upper surface of the main body, including the upper end and the rear of the upper surface, and the load dispersion plate acts on the upper surface of the main body. It is possible to disperse the load and reduce stress acting on the main body. Therefore, damage to the main body made of foamed resin that supports the load of heavy machinery can be prevented.

Further, in the work platform for heavy machinery according to the above aspect, the main body portion is arranged in a vertical direction perpendicular to the upper surface, in a front-back direction perpendicular to the vertical direction from the tip to the rear end, or in the vertical direction and the front-back direction. It may be divided into a plurality of divided blocks in at least one direction of the left and right direction orthogonal to the direction.

With such a configuration, the weight of each divided block constituting the main body of the heavy machinery work platform can be reduced, and the main body can be easily installed manually. Furthermore, the dimensions of each divided block can be reduced to facilitate transportation. Furthermore, by increasing the number of divided blocks, it is possible to configure a large main body that can be used in large heavy machinery.

Further, in the work platform for heavy machinery according to the above aspect, the main body section is divided into the plurality of divided blocks by one or more upper and lower dividing surfaces in the vertical direction, and the upper surface forming the supporting surface is arranged along a horizontal plane. In a state in which the main body is disposed in the main body, the angle of inclination of each of the upper and lower dividing surfaces may be smaller than the angle of inclination of the inclined bottom surface of the main body.

With this configuration, by increasing or decreasing the number of divided blocks that are stacked vertically depending on the inclination angle of the slope, it is possible to stack multiple blocks with different inclination angles horizontally or on each slope using the upper surface of the main body. It is possible to form a support surface that is more horizontal than the surface. In this case, the upper and lower dividing surfaces on the lower side of each divided block can be used as the inclined bottom surfaces of the main body disposed opposite to the inclined surface, and the upper and lower dividing surfaces on the upper side of each dividing block can be used as the supporting surface. It can be used as the upper surface of the main body to be formed.

Further, in the work platform for heavy machinery of the above aspect, both ends of the load dispersion plate are arranged inside both ends of the main body or both ends of each of the plurality of divided blocks in the left-right direction. Good too.

With this configuration, both ends of the load distribution plate in the left and right direction do not protrude from both ends of the main body or both ends of each of the pair of split blocks arranged at intervals, and the load distribution plate is The entire body in the left and right direction is supported by the upper surface which is the support surface of the main body. Therefore, the heavy machinery is prevented from riding on the end of the load dispersion plate that is not supported by the support surface of the main body, and the stability of the heavy machinery on the heavy machinery work platform can be improved.

Further, in the work frame for heavy machinery according to the above aspect, the main body is divided into the plurality of divided blocks by one or more front and rear dividing planes in the front-rear direction, and the load dispersion plate is arranged in the main body in the front-rear direction. It may be divided into a plurality of dividing plates at a position different from the front-rear dividing plane.

With such a configuration, each dividing plate constituting the load dispersion plate is arranged on the front-rear dividing plane that divides the main body into a plurality of divided blocks in the front-rear direction. This prevents the vertically adjacent divided blocks from shifting in the vertical, left-right, or front-back directions, improving the stability of the heavy machinery work platform whose main body is composed of multiple divided blocks. can be done.

In the heavy machinery work platform according to the above aspect, the upper surface tip portion smoothly extends to the rear portion of the upper surface in a cross section parallel to the up-down direction perpendicular to the upper surface and parallel to the front-rear direction from the tip to the rear end. It may have a connecting concave curved shape.

With such a configuration, when the heavy equipment moves from an inclined surface onto the main body of the work stand for heavy equipment, the load dispersion plate bends into a concave curved shape in response to the load of the heavy equipment, and the main body has the concave curved shape. It is possible to increase the contact area with the tip of the upper surface. Thereby, the load acting on the upper surface of the main body from the load dispersion plate can be dispersed, and the stress acting on the main body can be reduced. Therefore, damage to the main body made of foamed resin that supports the load of heavy machinery can be prevented.

Furthermore, in the heavy machinery work stand of the above aspect, a dimension of the upper surface tip portion along the front-back direction may correspond to a dimension of a ground contacting portion of the heavy machinery along the front-back direction. Specifically, the dimension of the upper surface tip portion along the longitudinal direction is, for example, 50% or more, 60% or more, 70% or more, 80% or more of the dimension of the ground contact portion of the heavy equipment along the longitudinal direction, or It can be increased to 90% or more.

With such a configuration, when the heavy equipment moves from an inclined surface onto the main body of the work stand for heavy equipment, the load dispersion plate bends into a concave curved shape in response to the load of the heavy equipment, and the main body has the concave curved shape. The contact area with the upper surface tip part can be increased more reliably. Thereby, the load acting on the upper surface of the main body from the load dispersion plate can be more reliably dispersed, and the stress acting on the main body can be reduced. Therefore, damage to the main body made of foamed resin that supports the load of heavy machinery can be more reliably prevented.

Further, the work stand for heavy machinery of the above aspect may include a resin-made non-slip material laid on the load dispersion plate and having at least one of a plurality of recesses and a plurality of protrusions.

With this configuration, when the heavy equipment moves on the load distribution plate installed on the main body of the heavy equipment work platform, the plurality of resin anti-slip materials laid on the load distribution plate At least one of the concave portion and the plurality of convex portions can prevent the heavy machinery from slipping. Therefore, the stability of the heavy machinery working on the heavy machinery work stand can be improved.

According to the present disclosure, it is possible to provide a work platform for heavy machinery that can easily form a horizontal or nearly horizontal support surface on an inclined surface.

FIG. 1 is a side view showing Embodiment 1 of a work platform for heavy machinery according to the present disclosure. FIG. 2 is a plan view of the heavy machinery work platform shown in FIG. 1; FIG. 2 is an enlarged view of the tip of the main body of the heavy machinery work stand shown in FIG. 1; FIG. 3 is a side view showing Embodiment 2 of the heavy equipment work platform according to the present disclosure. FIG. 3 is a side view showing Embodiment 3 of a heavy equipment work platform according to the present disclosure. FIG. 6 is a plan view of the heavy machinery work platform shown in FIG. 5;

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a work stand for heavy machinery according to the present disclosure will be described with reference to the drawings.

[Embodiment 1]
FIG. 1 is a side view showing Embodiment 1 of a work platform for heavy machinery according to the present disclosure. FIG. 2 is a plan view of the heavy machinery work stand 1 shown in FIG. 1. FIG. 3 is an enlarged view of the tip 11f of the main body portion 11 of the heavy machinery work platform 1 shown in FIG.

The work frame 1 for heavy machinery of the present embodiment is installed, for example, on both ends of an elevated bridge, at the entrance or exit of an elevated road, or on a slope IS such as an uphill road, and is used for heavy machinery that performs work on the slope IS. A horizontal support surface SF that serves as a foothold for the HM or a support surface SF that is closer to horizontal than its inclined surface IS is formed. An example of the heavy machinery HM that performs work on the heavy machinery work frame 1 is a crane that needs to be installed horizontally in order to lift materials with a rated load, but is not particularly limited.

The work platform 1 for heavy machinery includes a main body 11 made of foamed resin and a load dispersion plate 12 installed on the main body 11. As the foamed resin constituting the main body portion 11, for example, foamed polystyrene is preferable because it is lightweight and can easily ensure the required strength.If its density is about 15 kg/m ³ to 70 kg/m ³ This is more preferable from the viewpoint of lightness. Further, as the foamed resin constituting the main body portion 11, other foamed molded products such as polypropylene, hard urethane, ABS resin, or vinyl chloride can be used. Further, the main body portion 11 may be provided integrally, or may be divided into a plurality of divided blocks 111.

The main body 11 is configured, for example, in a vertical direction perpendicular to the upper surface 11t, in a front-back direction perpendicular to the vertical direction from the tip 11f of the main body 11 to the rear end 11r, or in a left-right direction perpendicular to the vertical and front-back directions. It can be divided into a plurality of divided blocks 111 in at least one direction. Each figure shows a three-dimensional orthogonal coordinate system including an X-axis parallel to the front-rear direction, a Y-axis parallel to the left-right direction, and a Z-axis parallel to the up-down direction.

In the example shown in FIGS. 1 and 2, the main body 11 is divided into two parts in the front-rear direction by one front-rear dividing surface 112, and also into two parts in the left-right direction, resulting in a total of four divided blocks 111. It is divided. More specifically, a pair of two divided blocks 111 arranged side by side in the front-rear direction are arranged with an interval in the left-right direction. The main body 11 is constructed such that the distance D between the center lines C of the left and right pairs of these two front and rear divided blocks 111 corresponds to the distance between the center lines of the left and right crawlers of a crane, which are the ground contact parts FP of the heavy machinery HM, for example. will be installed.

The planar shape of the two divided blocks 111 arranged in the front-back direction is, for example, a rectangle whose longitudinal direction is the front-back direction. Note that the main body portion 11 may be divided into three or more divided blocks 111 by two or more front and rear dividing surfaces 112 in the front-rear direction. Further, the main body portion 11 may be divided into three or more divided blocks 111 by two or more left and right dividing planes also in the left-right direction. In this case, the plurality of divided blocks 111 arranged in the left-right direction may be arranged without any interval in the left-right direction.

The load distribution plate 12 is, for example, a hard rectangular plate-shaped member installed on the main body portion 11. In the example shown in FIG. 2, the load distribution plate 12 has a rectangular planar shape whose longitudinal direction is the front-rear direction of the main body portion 11. The material of the load dispersion plate 12 is not particularly limited, but may be made of resin material, steel material, concrete material, fiber-reinforced resin material, wood-based synthetic material, synthetic rubber, rubber-containing resin material, etc., which has sufficient strength to withstand the load of the heavy machinery HM. It is possible to select a material that has

The load dispersion plate 12 has a distal end portion 12f that protrudes from the distal end 11f of the main body portion 11 disposed above the inclined surface IS in the inclination direction Dd and is disposed on the inclined surface IS. Here, the slope direction Dd of the slope IS is a direction along the maximum slope line of the slope IS, and is a direction in which the slope of the slope IS is maximum. Moreover, the load dispersion plate 12 has the elasticity to bend along the upper surface 11t of the main body part 11 and the inclined surface IS in response to the load of the heavy machine HM. Here, the elasticity that bends along the upper surface 11t and the inclined surface IS of the main body section 11 means that when the load dispersion plate 12 receives the load of the heavy machinery HM, This means that the portion that had the space can be elastically deformed so as to approach the upper surface 11t of the main body portion 11 and the inclined surface IS.

Further, the load dispersion plate 12 is divided into a plurality of dividing plates 121 at positions different from the front-rear dividing surface 112 of the main body 11 in the front-rear direction of the main body 11, for example. In the example shown in FIG. 2, the load distribution plate 12 is divided into three divided plates 121 in the front-rear direction, but the number of divided plates 121 is not particularly limited.

Further, in the example shown in FIG. 2, the load dispersion plate 12 is divided into two divided plates 121 in the left and right direction as well as the divided block 111 of the main body part 11, and the left and right divided plates 121 are arranged with an interval. has been done. Further, in the left-right direction, both ends of the load dispersion plate 12 are arranged on the inner side of both ends of the main body part 11. More specifically, three pairs of dividing plates 121 lined up in the front-rear direction are arranged with intervals left and right, and are placed on top of a pair of two dividing blocks 111 lined up in the front-rear direction. In the left-right direction, both ends of each dividing plate 121 are arranged on the inner side of both ends of each dividing block 111.

The main body portion 11 has an upper surface 11t and an inclined bottom surface 11b, and has a wedge-shaped shape when viewed from the side. The upper surface 11t of the main body 11 forms a support surface SF that is horizontal or closer to the horizontal than the inclined surface IS when the main body 11 is installed on the inclined surface IS on which the heavy machinery HM works. The inclined bottom surface 11b of the main body part 11 is provided to be inclined with respect to the upper surface 11t of the main body part 11 at an angle A corresponding to the inclination angle α of the inclined surface IS, and is arranged opposite to the inclined surface IS.

Here, the inclination angle α of the inclined surface IS is the angle of inclination of the inclined surface IS from the horizontal plane. Further, the angle A corresponding to the inclination angle α of the inclined surface IS is, for example, an angle where the difference between an angle equal to the inclination angle α of the inclined surface IS and the inclination angle α of the inclined surface IS is equal to or less than a predetermined threshold value. include. Such a threshold value is, for example, about 5% of the inclination angle α of the inclined surface IS.

The upper surface 11t of the main body section 11 includes an upper surface tip section 11tf adjacent to the distal end 11f of the main body section 11, and an upper surface rear section 11tr adjacent to the rear end 11r of the main body section 11 on the opposite side from the distal end 11f of the main body section 11. have. When the main body portion 11 is installed on the inclined surface IS, as shown in FIG. The upper surface tip portion 11tf is inclined with respect to the upper surface rear portion 11tr so as to be larger than γ.

In the example shown in FIG. 3, the dimension Ld of the top surface tip 11tf in the front-rear direction of the main body 11 depends on the thickness T of the top surface 11f of the main body 11 and the inclination angle δ of the top surface tip 11tf with respect to the top rear portion 11tr. It has been decided that That is, the dimension Ld of the upper surface tip portion 11tf in the front-rear direction of the main body portion 11 is determined, for example, as Ld=T/tanδ.

Hereinafter, the operation of the heavy machinery work stand 1 of this embodiment will be explained.

As mentioned above, in the conventional horizontal installation structure of the crawler crane described in Patent Document 1, when installing a pair of inclined gantry, it is necessary to lift the strip iron plate and the pair of support frames with the crawler crane. Installation work is complicated. In addition, it is necessary to balance the left and right strip-shaped iron plates on which the crawler crane is mounted, and jack up the lower part of the support frame in the slope direction using a jacking device, making the horizontal installation of the crawler crane very complicated. Become.

Further, as described above, the conventional scaffolding material for heavy machinery described in Patent Document 2 is intended to be used for heavy machinery equipped with a jack-up device. Moreover, in order to install this conventional scaffolding material for heavy machinery, in addition to heavy machinery such as a crane that rides on the scaffolding material for heavy machinery, a matching crane for installing the scaffolding material for heavy machinery is required.

On the other hand, the heavy machinery work platform 1 of this embodiment includes a main body 11 made of foamed resin and a load dispersion plate 12 installed on the main body 11. The main body portion 11 has an upper surface 11t that forms a support surface SF that is horizontal or more horizontal than the inclined surface IS when the heavy machine HM is installed on the inclined surface IS on which work is performed. Further, the main body portion 11 has an inclined bottom surface 11b that is inclined with respect to the upper surface 11t at an angle A corresponding to the inclination angle α of the inclined surface IS, and is disposed opposite to the inclined surface IS. The load dispersion plate 12 has a distal end portion 12f that protrudes from the distal end 11a of the main body portion 11 disposed above the inclination direction Dd of the inclined surface IS and is disposed on the inclined surface IS, and has a distal end portion 12f disposed on the inclined surface IS. It has the elasticity to bend along the upper surface 11t of the main body part 11 and the inclined surface IS in response to the bending. The upper surface 11t of the main body 11 has an upper surface tip portion 11tf adjacent to the tip 11f of the main body 11, and an upper rear portion 11tr adjacent to the rear end 11r of the main body 11 on the opposite side from the tip 11f. There is. Then, with the main body portion 11 installed on the inclined surface IS, the angle β between the top surface tip portion 11tf and the inclined surface IS becomes larger than the angle γ between the upper surface rear portion 11tr and the inclined surface IS. As such, the top surface tip portion 11tf is inclined with respect to the top surface rear portion 11tr.

That is, in the heavy machinery work stand 1 of the present embodiment, the main body portion 11 forming the support surface SF of the heavy machinery HM is made of foamed resin. Therefore, the main body part 11 made of foamed resin, which is lighter than metal or wood, can be carried by the worker himself and installed on the slope IS on which heavy machinery HM such as a crane operates. Further, when the main body 11 is installed on the inclined surface IS, the inclined bottom surface 11b of the main body 11 is provided to be inclined at an angle A corresponding to the inclination angle α of the inclined surface IS with respect to the upper surface 11t of the main body 11. is made to face the inclined surface IS. Thereby, the upper surface 11t of the main body portion 11 installed on the inclined surface IS can form a support surface SF that is horizontal or closer to the horizontal than the inclined surface IS. Therefore, according to the work platform 1 for heavy machinery of this embodiment, the horizontal or nearly horizontal support surface SF can be easily formed on the inclined surface IS.

Further, in the heavy machinery work platform 1 of the present embodiment, the support surface SF formed by the upper surface 11t of the main body 11 supports the heavy machinery HM via the load dispersion plate 12 installed on the main body 11. As a result, the load of the heavy machinery HM that performs work on the load distribution plate 12 is distributed by the load distribution plate 12, and acts uniformly over a wide range of the upper surface 11t of the main body 11 on which the load distribution plate 12 is installed. . Therefore, according to the work frame 1 for heavy machinery of the present embodiment, stress concentration on the upper surface 11t of the main body 11 due to the load of the heavy machinery HM can be prevented, and damage to the main body 11 made of foamed resin can be prevented. , it becomes possible to support a heavy heavy machine HM by the main body part 11.

In addition, when the main body 11 of the heavy machinery work platform 1 of the present embodiment is installed on the inclined surface IS, the tip 11f of the main body 11 disposed above the inclined direction Dd of the inclined surface IS is located on the inclined surface IS. The IS and the upper surface 11t of the main body 11 are adjacent to each other. In this state, the inclined surface IS is inclined at an inclination angle α of the inclined surface IS or an angle close thereto with respect to the upper surface 11t of the main body portion 11 that is horizontal or closer to the horizontal than the inclined surface IS. Further, the tip portion 12f of the load distribution plate 12 installed on the upper surface 11t of the main body portion 11 protrudes from the tip portion 11f of the main body portion 11 and is disposed on the inclined surface IS.

Therefore, when the heavy machinery HM moves from the slope IS to the main body 11 of the heavy machinery work frame 1, it rides on the tip 12f of the load dispersion plate 12 arranged on the slope IS, and then the main body The load distribution plate 12 is placed on the portion 11. At this time, the load distribution plate 12 has the elasticity to bend along the upper surface 11t and the inclined surface IS of the main body 11 under the load of the heavy machinery HM, so that the tip 12f of the load distribution plate 12 is elastically deformed into a concave curved shape. As a result, the contact area between the tip portion 12f and the heavy machinery HM is increased. Therefore, when the heavy machinery HM runs over the load dispersion plate 12 installed on the main body 11 from the slope IS, the load acting on the load dispersion plate 12 is dispersed, and the load dispersion plate 12 is transferred to the tip 11f of the main body 11. It is possible to reduce the stress acting on the body part 11 and prevent damage to the tip end 11f of the main body part 11 made of foamed resin.

Furthermore, in the heavy equipment work rack 1 of the present embodiment, the upper surface 11t of the main body 11 includes an upper surface tip 11tf adjacent to the tip 11f of the main body 11, and a top surface tip 11tf of the main body 11 on the opposite side from the tip 11f of the main body 11. and an upper rear portion 11tr adjacent to the rear end 11r. Then, with the main body portion 11 installed on the inclined surface IS, the angle β between the top surface tip portion 11tf and the inclined surface IS becomes larger than the angle γ between the upper surface rear portion 11tr and the inclined surface IS. As such, the top surface tip portion 11tf is inclined with respect to the top surface rear portion 11tr. With such a configuration, the angle β between the top surface tip portion 11tf and the inclined surface IS and the angle δ between the top surface tip portion 11tf and the top surface rear portion 11tr are respectively equal to the angle between the top surface rear portion 11tr and the slope surface IS. It is possible to make the angle closer to two right angles, that is, 180 degrees (π radians) than γ.

As a result, when the heavy machinery HM moves from the slope IS to the main body 11 of the heavy machinery work platform 1, it rides on the tip 12f of the load dispersion plate 12 disposed on the slope IS. It moves onto the load dispersion plate 12 disposed on the upper surface tip portion 11tf of the main body portion 11. As a result, the load dispersion plate 12, which bends under the load of the heavy machinery HM, can be supported over a wider range of the upper surface 11t including the upper surface tip portion 11tf and the upper rear portion 11tr of the main body portion 11. The load acting on the upper surface 11t of the main body 11 can be dispersed, and the stress acting on the main body 11 can be reduced. Therefore, damage to the main body portion 11 made of foamed resin that supports the load of the heavy machinery HM can be prevented.

In the heavy machinery work platform 1 of the present embodiment, the main body 11 is arranged in a vertical direction perpendicular to the top surface 11t, in a front-back direction perpendicular to the vertical direction from the tip 11f to the rear end 11r, or in a vertical direction and a front-back direction. It is divided into a plurality of divided blocks 111 in at least one direction of the left and right directions perpendicular to the direction.

With such a configuration, the weight of each divided block 111 constituting the main body 11 of the heavy machinery work stand 1 can be reduced, and the main body 11 can be easily installed manually. Furthermore, the dimensions of the individual divided blocks 111 can be reduced to facilitate transportation. Furthermore, by increasing the number of divided blocks 111, it is possible to configure a large main body 11 that can be used in large heavy machinery HM.

Further, in the heavy machinery work platform 1 of the present embodiment, both ends of the load dispersion plate 12 are arranged inside both ends of the main body 11 or both ends of each of the plurality of divided blocks 111 in the left-right direction. There is.

With this configuration, both ends of the load dispersion plate 12 or the dividing plate 121 in the left-right direction protrude from both ends of the main body 11 or from both ends of each of the pair of divided blocks 111 arranged at an interval. Instead, the entire load dispersion plate 12 in the left-right direction is supported by the upper surface 11t, which is the support surface SF of the main body portion 11. Therefore, the heavy machinery HM is prevented from riding on the end of the load distribution plate 12 that is not supported by the support surface SF of the main body part 11, and the stability of the heavy machinery HM on the heavy machinery work platform 1 is improved. I can do it.

Furthermore, in the heavy machinery work platform 1 of the present embodiment, the main body 11 is divided into a plurality of divided blocks 111 by one or more front-rear dividing surfaces 112 in the front-rear direction. Further, the load dispersion plate 12 is divided into a plurality of dividing plates 121 at positions different from the front-rear dividing surface 112 of the main body portion 11 in the front-rear direction.

With such a configuration, each dividing plate 121 constituting the load distribution plate 12 is arranged on the front-rear dividing surface 112 that divides the main body 11 into a plurality of divided blocks 111 in the front-rear direction. This prevents the divided blocks 111 adjacent to each other in the front-rear direction from shifting in the vertical direction, left-right direction, or front-back direction, so that the heavy machinery work platform 1 in which the main body 11 is composed of a plurality of divided blocks 111 can be Stability can be improved.

As described above, according to the present embodiment, it is possible to provide the work platform 1 for heavy machinery that can easily form the horizontal or nearly horizontal support surface SF on the inclined surface IS.

[Embodiment 2]
Next, Embodiment 2 of the work stand for heavy machinery according to the present disclosure will be described with reference to FIG. 4, with reference to FIGS. 2 and 3 of the first embodiment described above. The heavy machinery work platform 1 of this embodiment has the same configuration as the heavy machinery work platform 1 of the first embodiment described above, except for the configuration described below. Therefore, in the heavy machinery work platform 1 of this embodiment, the same parts as those of the heavy machinery work platform 1 of the first embodiment described above are given the same reference numerals, and the description thereof will be omitted.

In the heavy machinery work platform 1 of this embodiment, the main body 11 is divided into a plurality of divided blocks 111 by one or more upper and lower dividing surfaces 113 in the vertical direction. Further, in the heavy machinery work frame 1 of the present embodiment, the main body 11 is arranged such that the upper surface 11t of the main body 11 forming the support surface SF is along a horizontal plane, and the inclination angle λ of each upper and lower dividing surface 113 is is smaller than the inclination angle B of the inclined bottom surface 11b of the main body portion 11.

With such a configuration, by increasing or decreasing the number of divided blocks 111 stacked in the vertical direction according to the inclination angle ε of the inclined surface IS, the upper surface of the main body 11 can be stacked on a plurality of inclined surfaces IS having different inclination angles ε. 11t makes it possible to form a support surface SF that is horizontal or more horizontal than each inclined surface IS. In this case, the lower vertical dividing surface 113 of each divided block 111 can be used as the inclined bottom surface 11b of the main body portion 11 disposed opposite to the inclined surface IS, and the upper vertical dividing surface 113 of each divided block 111 The surface 113 can be used as the upper surface 11t of the main body portion 11 forming the support surface SF.

As explained above, according to the present embodiment, similarly to the above-described first embodiment, it is possible to provide a heavy machinery work platform 1 that can easily form a horizontal or nearly horizontal support surface SF on an inclined surface IS. I can do it.

[Embodiment 3]
Next, Embodiment 3 of the work platform for heavy machinery according to the present disclosure will be described with reference to FIG. 5 and FIG. 6, with reference to FIG. 3 of the first embodiment described above. The heavy machinery work platform 1 of this embodiment has the same configuration as the heavy machinery work platform 1 of the first embodiment described above, except for the configuration described below. Therefore, in the heavy machinery work platform 1 of this embodiment, the same parts as those of the heavy machinery work platform 1 of the first embodiment described above are given the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 5, in the heavy machinery work platform 1 of the present embodiment, the top surface tip 11tf is parallel to the vertical direction (Z-axis direction) perpendicular to the top surface 11t and extends from the tip 11f of the main body 11 to the rear end 11r. In a cross section parallel to the front-rear direction (X-axis direction), it has a concave curved shape that smoothly connects to the upper rear portion 11tr.

With such a configuration, when the heavy machinery HM moves from the inclined surface IS to the main body 11 of the heavy machinery work platform 1, the load dispersion plate 12 which bends into a concave curved shape under the load of the heavy machinery HM, and the concave curved surface It is possible to increase the contact area with the upper surface tip portion 11tf of the main body portion 11 having the shape. Thereby, the load acting on the upper surface 11t of the main body part 11 from the load distribution plate 12 can be dispersed, and the stress acting on the main body part 11 can be reduced. Therefore, damage to the main body portion 11 made of foamed resin that supports the load of the heavy machinery HM can be prevented.

Further, in the heavy machinery work platform 1 of the present embodiment, the dimension Ld along the front-back direction of the upper surface tip portion 11tf of the main body portion 11 may correspond to the dimension along the front-back direction of the ground contact portion FP of the heavy machinery HM. Specifically, the dimension Ld along the front-rear direction of the upper surface tip 11tf of the main body 11 is, for example, 50% or more, 60% or more of the dimension along the front-rear direction of the ground-contacting part FP of the heavy machinery HM, such as a crawler of a crane. It can be 70% or more, 80% or more, or 90% or more.

With such a configuration, when the heavy machinery HM moves from the inclined surface IS to the main body 11 of the heavy machinery work platform 1, the load dispersion plate 12 which bends into a concave curved shape under the load of the heavy machinery HM, and the concave The contact area with the upper surface tip portion 11tf of the main body portion 11 having a curved surface shape can be increased more reliably. Thereby, the load acting on the upper surface of the main body part 11 from the load distribution plate 12 can be more reliably dispersed, and the stress acting on the main body part 11 can be reduced. Therefore, damage to the main body portion 11 made of foamed resin that supports the load of the heavy machinery HM can be more reliably prevented.

In addition, in the heavy machinery work frame 1 of the present embodiment, the main body 11 and the load dispersion plate 12 extend from one end disposed outside both ends of the heavy machinery HM to the other end in the left-right direction, as shown in FIG. , are provided in one piece without being divided. With such a configuration, the load acting on the load dispersion plate 12 from the heavy machinery HM can be dispersed over a wider range of the upper surface 11t of the main body 11, and the stress acting on the main body 11 can be reduced. Damage to the main body portion 11 can be more reliably prevented.

Furthermore, as shown in FIG. 5, the heavy machinery work stand 1 of the present embodiment is constructed of a resin-made non-slip plate that is laid on a load dispersion plate 12 and has at least one of a plurality of recesses and a plurality of convex parts. The material 13 is provided. As the anti-slip material 13, for example, one-sided convex type or one-sided concave type of Repeat Board (registered trademark) manufactured by Ohashi Co., Ltd., or the Jurite (registered trademark) series or Super Jurite (registered trademark) manufactured by Keiyo Kogyo Co., Ltd. You can use series etc.

With this configuration, when the heavy machinery HM moves on the load dispersion plate 12 installed on the work platform 1 for heavy machinery, the resin anti-slip material 13 laid on the load dispersion plate 12 does not move. At least one of the plurality of recesses and the plurality of protrusions can prevent the heavy machinery HM from slipping. Therefore, the stability of the heavy machinery HM working on the heavy machinery work platform 1 can be improved.

As explained above, according to the present embodiment, similarly to the above-described first embodiment, it is possible to provide a heavy machinery work platform 1 that can easily form a horizontal or nearly horizontal support surface SF on an inclined surface IS. I can do it.

Although the embodiment of the work platform for heavy machinery according to the present disclosure has been described above in detail using the drawings, the specific configuration is not limited to this embodiment, and the design is within the scope of the gist of the present disclosure. Even if there are changes, they are intended to be included in this disclosure.

1 Work platform for heavy equipment 11 Main body 111 Divided block 112 Front and rear dividing surfaces 113 Upper and lower dividing surfaces 11b Slanted bottom surface 11f Tip 11r Rear end 11t Top surface 11tf Top tip 11tr Top rear section 12 Load dispersion plate 121 Dividing plate 12f Tip 13 Anti-slip Material A Angle B Inclination angle Dd Inclination direction FP Ground contact part HM Heavy equipment IS Inclined surface Ld Dimension SF Support surface α Inclination angle β Angle γ Angle ε Inclination angle λ Inclination angle

Claims (8)

A work rack for heavy machinery, comprising a main body made of foamed resin and a load dispersion plate installed on the main body,
The main body portion has an upper surface that forms a horizontal or nearly horizontal support surface than the inclined surface when the heavy equipment is installed on the inclined surface on which work is performed, and an inclination angle of the inclined surface with respect to the upper surface. an inclined bottom surface that is inclined at a corresponding angle and arranged opposite to the inclined surface;
The load dispersion plate has a distal end portion that protrudes from the distal end of the main body disposed above the inclined surface of the inclined surface and is disposed above the inclined surface, and is configured to receive the load of the heavy machinery. having elasticity to bend along the upper surface and the inclined surface of the main body,
The upper surface of the main body portion has an upper surface tip portion adjacent to the tip end of the main body portion, and an upper surface rear portion adjacent to a rear end of the main body portion opposite to the tip end,
The tip of the top surface is configured such that when the main body is installed on the slope, the angle between the tip of the top surface and the slope is larger than the angle between the rear portion of the top surface and the slope. A work frame for heavy machinery, characterized in that a portion thereof is inclined with respect to a rear portion of the upper surface. The main body portion is arranged in at least one direction, including a vertical direction perpendicular to the upper surface, a front-back direction perpendicular to the vertical direction from the tip to the rear end, or a left-right direction perpendicular to the vertical direction and the front-back direction. 2. The work platform for heavy machinery according to claim 1, wherein the work frame is divided into a plurality of divided blocks. The main body portion is divided into the plurality of divided blocks by one or more upper and lower dividing planes in the vertical direction,
In a state in which the main body is arranged such that the upper surface forming the support surface is along a horizontal plane, the angle of inclination of each of the upper and lower dividing surfaces is smaller than the angle of inclination of the inclined bottom surface of the main body. The work stand for heavy machinery according to claim 2. The heavy machine according to claim 2, wherein in the left-right direction, both ends of the load dispersion plate are arranged inside both ends of the main body or both ends of each of the plurality of divided blocks. work platform. The main body portion is divided into the plurality of divided blocks by one or more front and rear dividing planes in the front and rear direction,
3. The work frame for heavy machinery according to claim 2, wherein the load dispersion plate is divided into a plurality of dividing plates in the front-rear direction at positions different from the front-rear dividing plane of the main body. The upper surface tip portion has a concave curved shape that smoothly connects to the upper surface rear portion in a cross section parallel to the up-down direction perpendicular to the upper surface and parallel to the front-rear direction from the tip to the rear end. The work stand for heavy machinery according to claim 1. 7. The work platform for heavy machinery according to claim 6, wherein a dimension of the top surface tip portion along the front-rear direction corresponds to a dimension of a ground-contacting portion of the heavy machinery along the front-rear direction. 2. The work frame for heavy machinery according to claim 1, further comprising a resin-made non-slip material laid on the load dispersion plate and having at least one of a plurality of recesses and a plurality of projections.

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