JP3835802B2 - Lifting platform - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevating platform, and more particularly to a temporary elevating platform that enables general entry and exit of materials and heavy machinery across the platform when various civil engineering works are performed at a railway station. .
[0002]
[Prior art]
When civil engineering works are carried out at a location close to a railway line station, the existence of publicly known documents has not been confirmed. However, conventionally, the following methods have been used to obtain necessary materials, equipment, heavy machinery, etc. General access was made.
[0003]
The most common way to enter and exit is not to affect the operation of trains that are in operation. For general entry of materials, equipment, and heavy machinery, the railway must be moved away from the operating platform. I crossed and went in and out of the station.
[0004]
On the other hand, if it is absolutely necessary to cross the platform from the construction environment at the site, the temporary platform is made of steel, etc., and after the end of business, the platform is dismantled and materials, equipment and heavy machinery are placed in and out. As the business started, the platform was assembled and restored.
[0005]
However, such general access methods have the following problems, particularly when the platform needs to be crossed.
[0006]
[Problems to be solved by the invention]
That is, civil engineering and construction work is usually performed in a short time of only a few hours between the last train and the first train at a location close to the railway line station. However, in the method using the conventional temporary platform described above, if it takes about 1 hour to disassemble the home, for example, the same time is required for assembly and recovery. Construction efficiency has deteriorated so much that improvement has been desired.
[0007]
The present invention has been made in view of such conventional problems, and the object of the present invention is to greatly reduce the time required for general access to materials, equipment and heavy machinery, and to increase the construction efficiency. The object is to provide an elevating platform that can be improved.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a temporary lifting platform installed at an arbitrary position of a fixed platform, wherein the lifting platform is a flat, flat plate having the same width as the fixed platform. A lining plate and a lifting mechanism for the lining plate, the lifting mechanism provided on the back side of the lining plate, and a plurality of sliding support posts that support the lining plate so as to be movable up and down. A plurality of hydraulic jacks provided on the back side of the lining plate and moving the lining plate up and down, and during operation, the hydraulic jack is extended to attach the lining plate to the fixed platform. In addition, the jack was contracted after the end of business, and the lining board was lowered to the track height.
[0009]
According to the lifting platform configured as described above, during operation, the hydraulic jack is extended so that the lining plate is maintained at the same height as the fixed platform, and after the operation ends, the hydraulic jack is By contracting and lowering the lining board to the track height, it is possible to pass a material transportation vehicle or heavy equipment on the lining board after the operation without affecting the operating platform.
[0010]
At this time, since the up-and-down movement of the lining board is performed by a hydraulic jack, it can be performed in a short time, and the lining board is guided by a plurality of slide-type posts so as to be movable up and down, so that the up-and-down movement is stabilized. Can be done in the state.
[0011]
The sliding post and the hydraulic jack can be installed close to each other so as to form a pair.
[0012]
The lining plate includes a plurality of lining receiving girders and girders provided on the back side, and the girders are raised when the lining plate is raised to the same height position as the fixed platform. It can abut against the backside of the fixed platform.
[0013]
The elevating platform can be provided with a support pile for supporting and supporting the girder when the lining plate is lowered to the track height.
[0014]
The elevating platform may be provided with a support block for supporting and supporting the lining receiving girder when the lining plate is lowered to the track height.
[0015]
The elevating platform can be provided with a manual hydraulic jack that moves the lining plate up and down manually in an emergency.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. 1 to 7 show an embodiment of a lifting platform according to the present invention.
[0017]
The raising / lowering platform 10 shown in the figure is for temporary installation, and in the case of this embodiment, it is between the fixed platforms 12 that have already been constructed and used, and is sandwiched between the fixed platforms 12. It is provided at the position.
[0018]
The fixed platform 12 includes a top plate 12a, a girder member 12b provided on the back surface of the top plate 12a, and support legs 12c. The elevating platform 10 includes a lining plate 14, an elevating mechanism 15 (sliding post 16, hydraulic jack 18) of the lining plate 14, a lining receiving girder 20, a girder 22, a support pile 24, and a manual operation. Type hydraulic jack 26.
[0019]
The lining plate 14 is a flat plate having the same width as the top plate 12a of the fixed platform 12, is formed in a substantially square shape, and is fitted between the divided fixed platforms 12. It has become.
[0020]
The lining receiving girder 20 is formed of a hollow square steel material, and a plurality of lining receiving girders are fixedly provided on the back side of the lining plate 14 at a predetermined interval. Each lining receiving girder 20 extends in the width direction of the lining plate 14.
[0021]
The girder 22 is made of H-shaped steel or the like, and a pair is arranged near both ends in the width direction of the lining plate 14. The pair of girder holders 22 extend in the longitudinal direction of the lining plate 14 (the left-right direction in FIG. 1), and have both ends projecting outward from the end portion of the lining plate 14 by a predetermined length. Yes.
[0022]
The slide type post 16 of the elevating mechanism 15 is located on the back side of the lining plate 14 and is disposed below the pair of girder supports 22. In the case of the present embodiment, the slide post 16 and the hydraulic jack 18 are arranged adjacent to each other so that one pair becomes one set.
[0023]
The pair of slide-type posts 16, together with the hydraulic jacks 18, are arranged close to the four corners with respect to the approximately square-shaped lining plate 14, and two pairs are arranged along the longitudinal axis direction of the girder 22. It is arranged in a line.
[0024]
The slide-type post 16 and the hydraulic jack 18 are respectively disposed in a concave storage box 28 that is recessed and formed in the ground so that the post 16 is outside the hydraulic jack 18.
[0025]
The storage box 28 is formed at the lower four corners of the lining plate 14 by excavating the lower ground of the girder 22 to a predetermined depth and placing concrete, and includes a bottom 28a and side walls 28b. It has. As shown in detail in FIG. 5, the slide-type post 16 is a double-tube-structured telescopic tube, and includes an outer tube 16a and an inner tube 16b.
[0026]
The tip of the inner cylinder 16b extending in the vertical direction is fixed to the lower surface of the girder 22 and the outer cylinder 16a is fixed to the bottom 28a of the storage box 28. Guided freely.
[0027]
As shown in detail in FIG. 5, the hydraulic jack 18 includes a main body 18a and an extendable plunger 18b built in the main body 18a, and is formed in a substantially cylindrical shape. The main body 18 a is fixed to the bottom portion 28 a of the storage box 28, and the distal end of the extendable plunger 18 b is fixed to the lower surface of the girder 22.
[0028]
FIG. 4 is a block diagram of the hydraulic controller 30 of the hydraulic jack 18. The hydraulic controller 30 includes a throttle valve 30a connected to each of the four hydraulic jacks 18, and three de-co valves 30b connected to the throttle valves 30a to supply oil to each hydraulic jack 18 evenly. A solenoid valve 30c, a reducing valve 30d, and a relief valve 30e.
[0029]
Further, the oil stored in the oil pan 30h is supplied to the reducing valve 30d from the pump 30g driven by the motor 30f, and this oil is injected into the hydraulic jack 18 so that the telescopic blanker 18b is It expands and contracts in the vertical direction.
[0030]
On the other hand, as shown in FIGS. 1 to 3, the support pile 24 is made of H-shaped steel, and is embedded in the lower ground of the girder 22 at a predetermined interval along the longitudinal direction of the girder 22. Yes. A receiving plate 25 that abuts and supports the lower surface side of the girder 22 is fixed to the upper end of each support pile 24.
[0031]
Each of the support piles 24 is arranged coaxially so that the center axis in the longitudinal direction of the girder 22 coincides with the axis. In addition, the ground surface F.B located on both ends of the lining plate 14 and located inside each girder 22. In L, a pair of girder receiving blocks 32 are formed as indicated by dotted lines in FIG.
[0032]
This girder receiving block 32 abuts on the lower surface of the lining receiving girder 20 when the lining plate 14 is lowered, and supports the lining plate 14 from below. In this embodiment, concrete It is composed of a board and has the same length as the girder 22.
[0033]
In the elevating platform 10 configured as described above, when the hydraulic jack 18 of the elevating mechanism 15 is expanded and contracted, the girder 22 moves in the vertical direction along with the extension of the blanker 18b of the hydraulic jack 18, Along with the vertical movement, the sliding post 16 also moves up and down, and FIG. 5 shows the movement form of the girder 22 at this time.
[0034]
In FIG. 5, the state shown on the left side is a case where the hydraulic jack 18 is not driven, and the state shown on the right side in FIG. 5 is a case where the hydraulic jack 18 is driven and the telescopic jack 18b is extended upward. is there.
[0035]
In this case, the extension stroke L of the hydraulic jack 18 in this case is set as follows. That is, first, in the case of the present embodiment, in a state where the hydraulic jack 18 is not driven, as shown in FIG. 3, the upper surface of the lining plate 14 is substantially coincident with the line height (RL). On the lining plate 14, materials and equipment transport vehicles, heavy machinery, and the like can pass across the fixed platform 12.
[0036]
In this state, the pair of girder supports 22 are in contact with the receiving plate 25 fixed to the upper end of the support pile 24 and supported by the support pile 24, and the lining receiving girder 20 is Since the lower surface thereof is in contact with the upper surface of the girder receiving block 32 and is supported by the girder receiving block 32, even if a heavy object passes over the lining plate 14, no trouble occurs.
[0037]
On the other hand, from the state shown in FIG. 3, the hydraulic jack 18 is driven to move the girder 22 upward so that the upper surface of the cover plate 14 coincides with the upper surface of the top plate 12 a of the fixed platform 12.
[0038]
FIG. 2 shows a state in which the upper surface of the lining plate 14 is aligned with the upper surface of the top plate 12 a, and this position is maintained by a plurality of jacks 18 and slide posts 16. It is possible to walk on the liftable platform 10 in the same manner as described above.
[0039]
In this case, in a state in which the lining plate 14 is moved upward, as shown in FIG. 2, the portions that protrude from the ends of the lining plate 14 to the side at the both ends of the girder 22 are fixed. It abuts against the lower surface of the girder material 12b provided on the back surface of the platform 12 and restricts the girder 22 from moving further upward.
[0040]
That is, in this embodiment, the girder holder 22 functions as a stopper against the upward movement of the lining plate 14, and the extension stroke L of the hydraulic jack 18 causes the girder holder 22 to contact the receiving plate 25 of the support pile 24. The distance from the contacted position to the position at which the girder 22 abuts against the girder material 12b.
[0041]
The manual hydraulic jack 26 is used in an emergency such as when the hydraulic jack 18 breaks down. In the present embodiment, four manual hydraulic jacks 26 are installed in the vicinity of the hydraulic jack 18.
[0042]
Each of the manual hydraulic jacks 26 is attached two by two so that the upper ends of the manual hydraulic jacks 26 are locked to the back surfaces of the pair of girder holders 22. Each manual hydraulic jack 26 is disposed at a position where the lower end side can contact the upper end of the side wall 28 b of the storage box 28.
[0043]
The manual hydraulic jack 26 has a rectangular parallelepiped block 36 laminated on the side wall 28b below the jack 26 and the opposite side wall 28b, so that it can be operated like a worm and the lining plate 14 is moved upward. Move.
[0044]
The operation form at this time is shown in FIG. When the lining plate 14 is moved upward by the hydraulic jack 26, first, as shown in FIG. 7A, the side walls 28b face each other with the lower ends of the jacks 26 in contact with the side walls 28b. A plurality of blocks 36 are stacked in advance in the portion.
[0045]
Next, the jack 26 is extended to raise the girder 22 by a height corresponding to the thickness of the block 36, and a third block is newly inserted in the gap below the girder 22 caused by this rise. 36 is placed (see FIG. 7B).
[0046]
Next, the jack 36 is contracted, and as shown in FIG. 7 (C), after one block 36 is interposed at the lower end side thereof, the jack 26 is extended again as shown in FIG. 7 (D). Then, the girder 22 is raised by a height corresponding to the thickness of the block 36, and the fourth block 36 is placed in the gap.
[0047]
Thereafter, the same operation is sequentially repeated so that the lining plate 14 can be moved up to a height position that coincides with the lining plate 12a of the fixed platform 12, and when the lining plate 14 is lowered. 7 are sequentially reversed to remove the blocks 36 one by one, the lining plate 14 has the track height R.P. Lower to L.
[0048]
Now, according to the elevating platform configured as described above, during operation, the hydraulic jack 18 is extended to maintain the lining plate 14 at the same height position as the fixed platform 12, and After the completion, the hydraulic jack 18 is contracted and the lining board 18 is lowered to the track height RL, so that there is no impact on the operating platform, and on the lining board 14 after operation, Heavy machinery can pass through.
[0049]
At this time, the up-and-down movement of the lining plate 14 is performed by the hydraulic jack 18, so that it can be performed in a short time, and the lining plate 14 is guided by a plurality of slide-type posts 16 so as to be movable up and down. It is possible to move in a stable state, greatly reducing the time required for general entry and exit of materials, equipment and heavy machinery, and greatly improve the construction efficiency.
[0050]
In the case of the present embodiment, the lining plate 14 includes a plurality of lining receiving girders 20 and girders 22 on the back side, and the girder 22 includes the lining plate 14 and the fixed platform 12. Since it is configured to abut against the girder material 12b on the back side of the fixed platform 12 when it is raised to the same height position, the girder holder 22 functions as a stopper when moving up, so that the lining plate 14 Ascending positioning can be performed reliably.
[0051]
In the case of the present embodiment, the elevating platform 10 is provided with a support pile 24 that supports and supports the girder 22 when the lining plate 14 is lowered to the track height RL. There is no problem even if a heavy object passes through the plate 14.
[0052]
Further, in this embodiment, the lifting platform 10 is provided with a manual hydraulic jack 26 that moves the lining plate 14 up and down by manual operation in an emergency, so that even when the hydraulic jack 16 breaks down, the lifting platform 10 is covered. The work plate 14 can be lifted and moved for business.
[0053]
【The invention's effect】
As described above in detail, according to the elevating platform according to the present invention, it is possible to greatly shorten the time required for general entry / exit of materials, equipment and heavy machinery, and greatly improve the construction efficiency.
[Brief description of the drawings]
FIG. 1 is a top view of a platform showing an embodiment of an elevating platform according to the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which the elevating platform shown in FIG. 1 is moved upward.
FIG. 3 is a longitudinal sectional view of a state where the elevating platform shown in FIG. 1 is lowered.
4 is a block diagram of a hydraulic drive system of a hydraulic jack used for moving the elevating platform shown in FIG. 1. FIG.
FIG. 5 is an explanatory view of a main part when the lining plate is moved up and down by the hydraulic jack shown in FIG. 4;
6 is an explanatory cross-sectional view when the lining plate is moved up and down by an emergency jack attached to the elevating platform shown in FIG. 1. FIG.
7 is an explanatory view showing the operation steps of the emergency jack of FIG. 6 in order. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Lifting platform 12 Fixed platform 14 Covering board 16 Sliding post 18 Hydraulic jack 20 Covering girder 22 Girder holder 24 Support pile 26 Manual hydraulic jack

Claims (6)

In the temporary lift platform installed at any place of the fixed platform,
The elevating platform includes a flat plate-like lining plate having the same width as the fixed platform, and an elevating mechanism for the lining plate,
The elevating mechanism is provided on the back side of the lining plate, and is provided on the back side of the lining plate, a plurality of slide-type support posts that guide the lining plate so as to be movable up and down, and the lining plate A plurality of hydraulic jacks that move up and down,
During operation, the hydraulic jack is extended to maintain the lining board at the same height as the fixed platform, and after the operation is finished, the jack is contracted to bring the lining board into line height. An elevating platform characterized by being lowered. The elevating platform according to claim 1, wherein the sliding post and the hydraulic jack are installed adjacent to each other so as to form a pair. The lining plate includes a plurality of lining receiving girders and girders provided on the back side, and the girders are raised when the lining plate is raised to the same height position as the fixed platform. The elevating platform according to claim 1 or 2, wherein the platform is in contact with a back surface of the fixed platform. The elevating platform according to claim 3, wherein the elevating platform is provided with a support pile that supports and supports the girder when the lining plate is lowered to a track height. The elevating platform according to claim 3, wherein the elevating platform is provided with a support block that supports and supports the lining receiving girder when the lining plate is lowered to a track height. The lifting platform according to any one of claims 1 to 5, wherein the lifting platform includes a manual hydraulic jack that moves the lining plate up and down manually in an emergency.

Images