JP2022064863A - Crane bottom plate with at least one suspension part - Google Patents

Abstract

To provide a crane bottom plate which can be easily handled, placed at a desired place in use in a shortest possible time, and picked up therefrom after the use.SOLUTION: The present invention relates to a crane bottom plate with at least one suspension part for lifting and positioning the crane bottom plate. The crane bottom plate comprises: a plate-like, preferably cuboid basic structure with a top surface for supporting a crane support body and a bottom surface to be laid on a floor; and at least one suspension part protruding from a side surface that circumferentially connects the top surface and the bottom surface. The bottom plate is characterized in that the suspension part has: two bars protruding from the bottom plate; and a locking rod that connects the bars. A receiving region formed of the bars and the connection rod is configured for attachment of a hook.SELECTED DRAWING: Figure 4b

Description

The present invention relates to a crane floor plate having at least one suspended top.

Mobile cranes typically include a substructure with outriggers that include removable and / or swivel support beams. The support beam is equipped with a vertically telescopic support cylinder that can be mounted on the ground via a support plate. Supporting a mobile crane is beneficial for ensuring the stability of the crane suspension work.

However, the ground is not always durable enough to absorb the force transmitted by the support plate. However, this is an important safety standard against ground failures (damages) that can cause the crane to tip over.

Therefore, the risk of ground destruction is reduced by providing a floor plate for the crane and distributing the force transmitted from the crane via the outriggers over a wider area. By providing a crane floor plate that can move vertically toward the ground under the crane support plate, the surface pressure on the ground can be reduced.

Depending on the lifting capacity of the mobile crane, the mode of use and the load capacity of the ground, different dimensions of floorboards are required.

An object of the present invention is to create a crane floorboard that is easy to handle, can be placed in the desired location for use in the shortest possible time, and then picked up from there.

Further, according to the crane floor plate of the present invention, it is desirable that the crane floor plate can be lifted by different types of hoisting means, and the crane floor plate of the present invention is lifted not only by a wire rope but also by, for example, a sleeve. It is something that can be done. The connection with the hook is safer because the sling does not slip. However, for variability reasons, it should be possible to connect via a sling.

Further, it is also an object of the present invention to simplify the stacking of a plurality of crane floor plates. As a general rule, crane floor plates are delivered in a stacked state by an auxiliary vehicle of a mobile crane. It is also important that the individual floorboards do not shift from each other during transportation. This point is also the subject of the present invention.

An object of the present invention is to overcome some or all of the above drawbacks.

The above object can be achieved by a crane floor plate having all the features of claim 1. Further useful embodiments of the invention are described in the dependent claims.

According to the present invention, a crane floor plate having at least one suspended upper portion for lifting and positioning a crane floor plate is a plate having an upper surface on which a crane support is placed and a lower surface for mounting on the ground. It has a shaped, preferably rectangular parallelepiped basic structure, and is provided with at least one suspended upper portion protruding from the side surface connecting the upper surface and the lower surface in the circumferential direction. The crane floor plate includes two bars whose suspended upper part protrudes from the floor plate and a locking rod connecting these bars, and these bars and the locking rod provide a receiving area for attaching a hook. It is characterized by forming.

By forming a receiving area with the bars protruding laterally from the crane floor plate and the locking rods connecting these bars, the crane floor plate can be connected to the hooks of the lifting means. The suspended top is designed to accommodate sling chains and round slings with shackles and hooks for connecting means. Basically, almost any hoisting means present at the crane location or near the required location can be used.

In addition, the suspended upper portion according to the present invention may rise beyond the upper surface of the floor plate in the height direction perpendicular to the upper surface or the lower surface.

This ridge is used to align and secure multiple crane floorboards of the same design when stacking and transporting them. For this purpose, an upwardly projecting ridge of the suspended upper part from the upper surface of the first crane slab is associated with the correspondingly shaped lower surface of the crane slab placed above it, as a result. It is possible to prevent the crane floor plate arranged above from slipping with respect to the crane floor plate arranged below.

It is preferable that the raised portion of the suspended upper portion extending in the height direction above the floor plate extends diagonally from the upper surface.

This is advantageous when you want to place the crane floorboard on top of another crane floorboard. In order to keep the transport dimensions of the stacked crane floor plates as compact as possible, it is necessary to stack them so that they are as close to each other as possible. When the raised portion of the suspended upper part of the lower crane floor plate has an inclination, the alignment function when the upper crane floor plate is placed is exhibited. When the upper crane floor plate is lowered onto the slope of the lower suspended upper part, its own weight causes lateral movement, which causes the upper crane floor plate without any offset to the lower crane floor plate. The floor plate can be automatically moved to a desired position.

In any modification of the invention, two bars are placed in a common plane with the locking rods, preferably this common plane can be defined by the top surface of the crane floor plate.

This bar and locking rod arrangement is advantageous in that it lifts the crane floor plate, which allows for the optimum flow of lifting force when lifting the floor plate.

In any variation of the invention, two spaced cams are provided on the sides of the locking rod facing away from the bar, preferably each cam crossing the locking rod. Can be provided within the region of the longitudinal axis of.

The cam on the suspended upper part protruding to the outside of the crane floor plate serves to fix the crane floor plate via a lifting means guided upward from the lower crane floor plate. In this way, the hoisting means, which may be a rope-shaped sling or a chain consisting of a plurality of links, can be inserted into the recess formed by the two cams, so that the crane floor plate is lateral. It is possible to prevent it from slipping in the direction. For example, when a stack of a plurality of crane floor plates collides during unloading or loading, the stack may be tilted and individual crane floor plates may slide off the stack. In such a case, the cam cooperates with the lifting means to stabilize the floor plate and suppress the slip that is likely to occur on the floor plate. Therefore, when slipping occurs, the cam comes into contact with the lifting means to prevent further slipping.

In a further advantageous variant of the invention, the locking rod extends beyond the opposing sides of the two bars and connects the two bars to form a protrusion on the outer side of the two bars. You may.

As explained at the beginning, it is also desirable that the suspended upper part of the present invention can directly cooperate with the hook. This is achieved by a locking rod that forms a receiving area for attaching the hook by connecting to the two bars.

Here, it is also possible to attach the crane floor plate to the holding sling by providing a protrusion on the opposite side of each bar. Thus, a loose sling can climb over the two protrusions and move towards the crane floor, while a tight sling attached to the two bars can climb over the protrusions and head outward. It is not possible.

This makes the suspended top particularly variable and versatile, making it suitable for interaction with hooks and slings.

Further, according to the present invention, the cam and the protrusion may be provided so as to be vertically aligned. It is also possible that the longitudinal lengths of the cams and protrusions are within the plane defined by the top surface or a plane parallel to it.

In a further variation of the invention, the cross section of the locking rod connecting the two bars is circular in cross section to allow interaction with the round cross section of the hook with low wear, preferably beyond the bar. It may have a circular cross section with extending protrusions.

According to the present invention, the area of the bar facing downward may be rounded to allow wear-free fitting of the sling on the bar.

Like the bar, the locking rod may be solid or hollow.

Preferably, the suspended top, bars and / or locking rods are solidly formed, for example, by performing a cast steel manufacturing process. However, other manufacturing processes and / or manufacturing methods are also possible, such as molding, molding, joining, or peeling, using special materials. However, the forging process is a preferred manufacturing method for suspended tops as it exerts a large force.

In a further advantageous embodiment of the present invention, the basic region of the crane floor plate may be provided with at least one recess in which the suspended upper portion is arranged. Both the top and bottom surfaces of the crane floor plate correspond to the basic area.

The advantage of the recesses extending from the top to the bottom is that the height of the suspended top is higher than the top, making it suitable as an alignment aid for stacking several identically formed crane floorboards.

According to the present invention, it is preferable that the crane floor plate is essentially a rectangular parallelepiped outer contour. The suspended upper portion can be arranged using at least one recess extending from the upper surface to the lower surface of the outer contour, preferably designed so that the suspended upper portion does not exceed the basic rectangular range defined by the outer surface. can do.

This reduces the risk of collision with an object that damages the suspended top when the suspended top is inside the imaginary frame range of the side edge. Therefore, the side edge of the crane floor plate functions as a protection for the suspended upper part.

Further, two or more recesses for arranging each suspended upper portion are arranged at opposite positions of the crane floor plate, and preferably, recesses are provided in each of the squares of the crane floor plate having a substantially rectangular shape. And one suspended upper part may be arranged for each.

The recess can have a semi-square shape divided along its diagonal in plan view.

In a further development of the present invention, it is assumed that the lower surface of the crane floor plate has a recess, and as a result, when the floor plates are stacked in this recess, the frictional connection with the crane floor plate arranged below is established. Will be done. By doing so, the raised portion of the suspended upper part of the lower floor plate fits snugly into the recess of the upper floor plate. Due to the existence of a plurality of such frictional connections, the stacked floor plates cannot be simply moved to each other.

According to the preferred design of the present invention, each suspended upper portion may be connected to a corner plate adjacent to both the upper surface adjacent to the corner, the lower surface adjacent to the corner, and the two side surfaces extending to the corner.

Further features, details and advantages of the present invention are shown in the description of the following figure.

It is a perspective view which shows the mobile crane in the state which the support arm is supported by the floor plate for a crane. It is a perspective view which shows the floor plate for a plurality of stacked cranes fixed to a hoisting means. It is a top view of the floor plan for a crane of this invention provided with four suspended upper parts. It is a side view of the suspended upper part. It is a perspective view of the suspended upper part. It is a top view of the suspended upper part. It is a detailed view of the lifting means locked to the suspended upper part of a floor plate. It is a detailed view of the laminated body of the floor board to which the lifting means is attached. It is a detailed view of the floor board on the upper side of the laminated body of the floor board, and the figure which shows the guide of the lifting means along the suspended upper part. It is a detailed view of the laminated body of the floor board provided with another type of lifting means. It is a perspective view which shows the two crane floor plates arranged at a space.

FIG. 1 shows a perspective view of a mobile crane 1, in which a support arm 3 is supported on a crane floor plate 7 by a support cylinder 4 and a support plate 5.

By supporting with the floor plate 7, the contact area where the force can be transmitted to the ground is increased, so that the risk of ground destruction is reduced.

This allows the mobile crane to work on less stable surfaces without the risk of tipping over due to lifting operations. For the sake of clarity, the mobile crane is shown only in its substructure 2 in this drawing, but the superstructure with the crane boom is not shown.

FIG. 2a shows several stacked crane floorboards 7, which are attached to the hoisting means 8, in this case a hanging rope.

As mentioned above, if the ground at the construction site is not stable enough, it is necessary to use the crane floor plate 7. As a general rule, a crane floor plate 7 is arranged under each crane-side support plate 5 of the mobile crane 1. In order to ground the mobile crane 1, it is necessary to arrange four floor plates 7. It is advantageous for the mobile crane 1 to do this alone. Therefore, the transport vehicle carries the heavy floor plate 7 to the site, and the four floor plates 7 are stacked and delivered as a laminate.

In the mobile crane 1, the laminate 8 on the floor plate 7 is lifted by the lifting means 8 connected to the suspended upper portion 20, and the stack is lifted and placed at a desired position of the first crane floor plate 7. When the laminate is on the ground 6, the assistant removes the lifting means 8 from the suspended upper portion 20 of the bottom crane floor plate 7, and the lifting means 8 is covered by the second crane floor plate 7 from the bottom. Connect to the suspension top 20. This is done until the last crane floor plate 7 is in the desired position.

The floor plates 7 are stacked in the reverse order in order to transport them away from the construction site. In order for the suspended upper portion 20 to lift the clear center of gravity of the floor plate 7, at least two suspended upper portions 20 are required for each floor plate 7. However, in general, four suspended upper portions 20 are provided for stable movement of the floor plate 7. However, it will be apparent to those skilled in the art that the present invention is not limited to the number of suspended upper portions 20. It is not always necessary to limit the position of the suspended upper portion 20 to the corner. It may also be possible to provide one suspended top 20 on all sides, or place two suspended tops 20 on each of the two opposing sides.

Since the crane floor plate 7 is heavy and heavy loads having such large dimensions are handled at the construction site, the suspended upper portion 20 must be protected from damage. Therefore, it is proposed that the suspended upper portion 20 is basically arranged in an essentially recessed region on the overall outer contour 71 of the floor plate 7. This can be done at all points of the crane floor plate 7, and it has been found that the positions above or below the four corners of the crane floor plate 7 are advantageous.

The round sling 81 is wound around the suspended upper portion 20 of the bottom crane floor plate 7. The floor plate 7 on top is guided by a round sling 81 on the two bars 21 so that it is safely guided during the movement of the laminate on the floor plate 7. The uppermost floor plate 7 deflects the round sling 81 toward the lifting attachment on the mobile crane 1.

In FIG. 2b, the extension of the side surfaces 711 and 712 is indicated by the solid line 71, which shows that each suspended upper portion 20 is within the extension of the two side surfaces 711 and 712. When two components collide at a construction site, the stable sides 711,712 usually absorb the impact and the suspended top 20 is protected.

FIG. 3a is a side view of the suspended upper portion 20. It can be seen that there is usually a raised portion 23 that projects from this flat region through an incline, starting from a flat region that generally coincides with the top surface 715 of the crane floor plate 7. It can also be seen that in the advantageous design of the suspended upper portion 20, the locking rod 22 connecting the two bars 21 is in a plane continuing from the upper surface.

FIG. 3b shows a perspective view of the suspended upper portion 20 so that the basic structure thereof can be understood. By connecting the two bars 21 protruding from the floor plate 7 to each other with the locking rod 22, a receiving area for locking the hook or the like is provided. Two cams 212 project from the side surface of the locking rod 22 facing the opposite side of the bar 21, and the cams 212 have an effect of fixing the lifting means 8 with a laminated body of several floor plates 7. This is limited, at least in the movement parallel to the longitudinal direction of the suspended upper portion 20.

Further, the locking rod 22 extends outside the two bars 21 in opposite directions to form a so-called protrusion 222 that prevents the sling from slipping when the sling interacts with the suspended top 20.

FIG. 3c is a top view of the suspended upper portion 20. The base plate 24 of the suspended upper portion 20 can be seen, and the base plate 24 is in close contact with the floor plate 7, and is preferably aligned with the upper surface 715 of the floor plate 7.

The two bars 21 are used to connect the round sling 81 and the crane floor plate 7. The round sling 81 is guided around the bar 21 (see FIG. 2a). To reduce wear, the bar 21 can have a suitable radius 211. These radii 211 are preferably provided at almost or all transitions on the suspended upper portion 20. The two protrusions 222 are basically used to protect the round sling 81 from slipping. On the opposite side, the base plate 24 as a connection of the floor plate 7 to the steel structure fixes the position of the sling and prevents the sling from slipping.

FIG. 4a is a detailed view of the hoisting means 8 (also referred to as sling means 8) on the crane floor plate 7.

A locking rod 22 is provided to connect the floor plate 7 and the sling chain 82. A hanging hook 821 or a shackle 822 attached to the end of the sling chain 82 can be attached to the locking rod 22. Two bars 21 and a locking rod 22 surround a safe receiving area for this purpose. The bar 21 penetrates the locking rod 22 to form two raised portions, i.e., the cam 212, which can improve the position accuracy of the hanging hook 821.

As described above, the raised portion 23 projects beyond the upper surface 715 of the floor plate 7. Therefore, the ridge 23 itself is not protected from damage, but is designed to be sturdy and sloped. The lower surface 716 of the floor plate 7 is provided with a corresponding recess 7161. When the two floor plates 7 are stacked, the raised portion 23 reaches the position of the recess 7161, and the two floor plates 7 are arranged side by side by the slope. If the two floor plates 7 are arranged with each other, sufficient morphology is matched and the two floor plates 7 are fixed by the weight of the upper floor plate 7.

FIG. 4b is a detailed view of the laminate of the floor plate 7 in which the lifting means 8 is attached to the floor plate 7 arranged below. Here, it is shown that the upper floor plate 7 is additionally guided by guiding the sling chain 82 between the cams 212 of the floor plates 7 stacked on top of each other.

FIG. 4c shows that the cam 212 limits the movement of the sling chain 82, thereby achieving a certain stabilizing effect of the floor plate 7 arranged in the laminate.

FIG. 4d shows another type of lifting means (shackle 822) attached to the floor plate 7. Here, attention should be paid to the flow of force from the suspended upper portion 20 to the steel structure of the floor plate 7. This is especially true as the mobile crane 1 moves the stacked floorboards 7. For this purpose, a properly inclined corner plate 717 is provided, which is connected to as many steel plates as possible in the crane floor plate 7. These are steel plates on the top surface 715, bottom surface 716 and adjacent side surfaces, such as side surface 711 and side surface 712 steel plates. Further, a force deflecting plate 7171 for reinforcement may be provided and connected to both the suspended upper portion 20 and the corner plate 717 and the lower surface 716. The force polarizing plate 7171 extends diagonally with respect to a plane extending downward from above.

FIG. 5 shows a state in which two floor plates 7 arranged one above the other with the hanging upper portion 20 provided are moving to each other. The raised portion 23 has a boundary contour extending upward from a plane defined on the top surface, which corresponds to the contour of the corresponding portion of the bottom surface. Therefore, if the two floor plates 7 are correctly arranged with each other, shape matching occurs and the sliding of the two floor plates 7 is hindered. The inclination of the raised portion 23 ensures that automatic alignment is performed when the two floor plates 7 are moved together.

The tilt helps to properly align the two crane floor plates 7. If the two floor plates 7 are placed one on top of the other, sufficient shape conformance is achieved, which is fixed by the weight of the upper floor plate 7.

Claims (15)

A crane floor plate (7) with at least one suspended top (20) for lifting and positioning.
A plate-like, preferably rectangular parallelepiped basic structure having an upper surface (715) for supporting the crane support (3, 4, 5) and a lower surface (716) for grounding.
It is provided with at least one suspended upper portion (20) protruding from a side surface (711, 712) connecting the upper surface (715) and the lower surface (716) in the circumferential direction.
The suspended upper portion (20) is formed by a bar (21) and a locking rod (22), and protrudes from the crane floor plate (7) so as to form a receiving area to which the hook (821) is attached. A crane floor plate (7) comprising a book bar (21) and a locking rod (22) connecting the bars (21). The suspended upper portion (20) exceeds the upper surface (715) of the crane floor plate (7) and is perpendicular to the upper surface (715) or the lower surface (716) in the height direction of the crane floor plate (7). The crane floor plate (7) according to claim 1, which is raised in the above. The raised portion (23) of the suspended upper portion (20) extends in the height direction beyond the crane floor plate (7), and then inclines and descends so as to be lower than the height of the upper surface (715). The crane floor plate (7) according to claim 2. The two bars (21) are arranged in a common plane together with the locking rod (22), preferably the common plane is defined by the upper surface (715) of the crane floor plate (7). The crane floor plate (7) according to any one of claims 1 to 3. Two separate cams (212) are provided on the side surface of the locking rod (22) facing the opposite side of the bar (21).
Preferably, one of claims 1 to 4, wherein each of the cams (212) is located in the region of the respective longitudinal axis of the bar (21) that intersects the locking rod (22). The above-mentioned floor plate for a crane (7). The locking rods (22) extend beyond the opposing sides of the bar (21) and form two protrusions (222) on the outer sides of the two bars (21). The crane floor plate (7) according to any one of claims 1 to 5, wherein the bars (21) are connected to each other. The crane floor plate (7) according to claims 5 and 6, wherein the cam (212) and the protrusion (222) are orthogonal to each other. The cross section of the locking rod (22) connecting the two bars (21) is circular in cross section so that it can interact with the curved cross section of the hook in a mode of low wear.
Preferably, the crane floor plate (7) according to any one of claims 1 to 7, wherein the locking rod (22) comprises a cam (212) extending beyond the bar (21). Claims 1-8 that the area of the bar (21) facing the lower surface (716) is rounded to allow wear-free fitting of the round sling (81) to the bar (21). The crane floor plate (7) according to any one of the above. The invention according to any one of claims 1 to 9, wherein the suspended upper portion (20), the bar (21) and / or the locking rod (22) are solidly formed by forging. Crane floor plate (7). The crane floor plate according to any one of claims 1 to 10, which has a substantially rectangular lower surface and is provided with at least one recess in which the suspended upper portion (20) is arranged. (7). The crane floor plate (7) essentially has a rectangular parallelepiped outer contour.
Preferably, the outer contour is provided with at least one recess extending from the upper surface (715) to the lower surface (716) for arranging the suspended upper portion (20).
Preferably, according to any one of claims 1 to 11, the recess is designed so that the arranged suspended upper portion (20) does not exceed the rectangular area defined by the outer contour (71). Crane floor plate (7). In order to arrange each of the suspended upper portions (20), two or more recesses are arranged on the crane floor plate (7) so as to face each other.
The crane floor plate (7) according to claim 12, wherein the recesses are provided at the four corners of the crane floor plate (7), and each of the recesses accommodates the suspended upper portion (20). The crane floor plate (7) according to claims 2 and 11.
When the crane floor plate (7) is stacked, the lower surface (716) of the crane floor plate (7) is frictionally connected to the crane floor plate (7) arranged under the lower surface (716). Has a recess,
13. The crane floor plate (7) according to any one of them. Each of the suspended upper parts (20) has an upper surface (715) adjacent to the corner, a lower surface (716) adjacent to the corner, and a corner plate (717) adjacent to two side surfaces (711, 712) extending to the corner. The crane floor plate (7) according to any one of claims 12 to 14, which is connected to the crane.

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