JP2838395B2 - Asphalt mat suspension frame device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension frame of a plate-like body such as an asphalt mat laid on a seabed or the like to support an offshore structure, and more particularly, to a structure for holding an asphalt mat horizontally. The present invention relates to an asphalt mat suspension frame device that performs cargo handling.

[0002]

2. Description of the Related Art Conventionally, it has been used to increase the coefficient of friction by laying it on the lower surface of a marine structure such as a caisson or to place it on the upper surface of the seabed to protect the ground from scouring due to tides and the like. In addition, asphalt mats (hereinafter referred to as mat members) are used.

As shown in FIG. 7, an internal reinforcing member 4 such as a wire mesh or glass cloth is arranged between asphalt layers 2 and 3 which are divided into upper and lower layers as shown in FIG. The mat wire members 5 are provided in parallel at predetermined intervals at positions corresponding to the internal reinforcing members.

The mat wire member 5 has eye members 6 used for cargo handling at both ends, and the eye member 6 is engaged with a hook of a suspension frame or the like so that cargo can be handled by the suspension frame. I have to. An end fixing plate member 7 is arranged at both ends of the mat wire member 5 so as to be embedded in the mat member, and fixing plates 8 are arranged at predetermined intervals at an intermediate portion, and the inside of the mat is fixed. The mat wire member 5 is held so as not to come out of the mat wire member 5.

As a suspension frame for loading and unloading the mat member as described above, for example, one disclosed in Japanese Patent Application Laid-Open No. 3-33333 is known. The hanging frame of the conventional example has a configuration as shown in FIGS. 8 and 9, and supports the mat member 1 below the hanging frame 50 via a hanging tool, and a large number of hooks 56 of the crane. The book is supported using the hanging wire members 55 and 55a.

Further, in the hanging frame 50, as shown in FIG. 9, locking members 54, 54a are respectively disposed on end frame members 53, 53a provided at both ends of the frame body, and A stopper is provided rotatably with respect to the end frame member via a horizontal shaft, and after the locking member is rotated in a direction of applying tension to the mat wire member of the mat member, the suspension wire 55, 55
The lifting frame 50 is lifted by using a, and can be moved to any position by a crane.

[0007]

However, as shown in the prior art, a support member is provided rotatably with respect to the frame of the suspension frame, and tension is applied to the mat wire member before lifting the mat member. In the case where the mat is lifted, the operation of applying tension to the mat wire member must be performed by an operator manually operating a winch or the like. There is a problem that the member is largely bent by the weight of the mat itself.

Further, when the mat member is constructed in a low temperature such as a winter season or in a cold region, the mat member becomes hard and has a low flexibility, so that the mat wire member supported by the suspension frame is largely bent. When you lift the mat in a state where
The mat may crack. When a crack or the like is generated in the mat, seawater may enter through the crack and adversely affect the internal reinforcing member, which may hinder water stoppage after being laid on the seabed ground. May occur.

Therefore, conventionally, when the temperature is low, the lifting speed of the mat is set to be very slow so that the mat is not subjected to a large bending impact so as to carry the cargo. However, when handling a large-sized mat, the fact that the work efficiency is not good has a great effect on the overall work efficiency. Even if there is no influence of temperature, supporting the mat member horizontally on the suspension frame is important for the efficiency of mat handling and the protection of the mat. At present, it is desired to solve the above problem.

The present invention solves the conventional problem of handling the mat as described above. The tension can be applied to the mat wire member by utilizing the weight of the mat, and the mat wire member can be substantially lifted only by lifting the hanging frame. It is an object of the present invention to provide an asphalt mat suspension frame device that can be supported horizontally.

[0011]

According to the present invention, an end of a mat wire member arranged so as to penetrate the inside of an asphalt mat in a width direction is locked and held by a locking member provided on a suspension frame. And a device for lifting an asphalt mat using a suspension frame.

In the invention according to the first aspect of the present invention, an end frame member supported via horizontal shafts disposed on both side ends of the suspension frame, a suspension wire provided on the end frame member, and a mat wire member are provided. A device for supporting the asphalt mat in a horizontal state by converting a tension applied to the suspending wire into a tension of a mat wire member of the asphalt mat.

[0013] In the invention according to claim 2 of the present invention, the hanging frame is provided with a plurality of mat wire locking portions arranged on an end frame member and a locking member of each mat wire locking portion. And an interlocking wire for interlocking and releasing the locking member, so that the locking member can be simultaneously opened by the interlocking wire.

With the construction described above, in the suspension frame device of the present invention, an end frame member for supporting ends of a mat wire member of an asphalt mat is provided at both ends of a rigid frame member. Since the end frame member converts the tension applied to the suspension wire via the horizontal shaft into the tension applied to the mat wire member, the mat wire member can be supported in a substantially horizontal state. Therefore, the mat member suspended by the suspension frame is
Because it does not bend significantly, even in cold weather where the asphalt hardens, it is not necessary to carry out cargo handling at a speed that takes into account deformation during lifting to prevent bending of the mat member. It can be carried out.

Further, since the mat member is not deformed so as to bend at the time of loading / unloading work by the crane, the mat member is not damaged and the mat member can be handled in a stable state. . Furthermore, in the suspension frame device of the present invention, a plurality of locking members for locking the eye member provided at the end of the mat wire member can be simultaneously opened using one interlocking member.
The work of laying the asphalt mat can be easily performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An asphalt mat suspension frame device according to the present invention will be described with reference to the illustrated example. FIG.
As shown in FIG. 5, the suspension frame 10 of the present invention is a combination of a number of vertical frame members 11 and horizontal frame members 12 to constitute a suspension frame main body, and both end portions of the suspension frame main body have end frame members 15, The mat wire members of the mat member are supported by the end frame members by arranging the mat members 15a.

The vertical frame member 11 constituting the suspension frame 10 is disposed parallel to the mat wire member of the mat member, and the weight of the mat is given through the mat wire member. It is configured using such a material having high rigidity. Further, since the horizontal frame member 12 is a member that only functions to connect the adjacent vertical frame members to each other, a relatively light member such as a channel member is used, and the intersection of the vertical frame member and the horizontal frame member is used. A frame having one rigidity is formed by welding at a portion or by bolting or the like.

In the suspension frame 10 constructed as described above, the end frame members 15, 15 disposed on both sides thereof are provided so as to be swingable with respect to the suspension frame 10 via a horizontal shaft, as shown in FIG. In such a state, the mat member 1 is supported for cargo handling.
In the example shown in FIG. 2, the end bracket members 15 and 15a disposed on both sides of the suspension frame 10 have upper brackets 1 and 2 for retaining the suspension wires 13 and 13a, as will be described in detail later.
6, 16a and a mat wire locking portion for locking the end of the mat wire member 5 of the mat member. And
By raising the suspending frame using the suspending wire, the end frame members rotate relative to each other via the hinge portion against the weight of the mat member, and the mat member is placed in a state of applying tension to the mat wire member 5. Is held in a substantially horizontal state on the lower surface of the suspension frame to perform the lifting action.

In order to perform the above-described operation, the suspension frame of the present invention has a hinge portion 20 as shown in FIGS. 3 and 4. The hinge portion 20 has a vertical frame member. Frame support plates 24 and 25 are fixedly provided on the web 21 of 11, and an end frame member 15 is attached to an end of the frame support plate via a support shaft 22.
Is supported rotatably. Further, the end frame member 15 is provided with an upper bracket 16 for connecting the suspension wire 13 and a mat wire locking portion 30 for locking the eye member 6 of the mat wire member 5 of the mat member.

When the suspension frame is lifted via the suspension wire 13, the end frame member 15 is moved clockwise through the support shaft 22 of the hinge 20 due to the weight of the suspension frame and the weight of the mat member 1. In the other end frame member, an operation of rotating in the counterclockwise direction is performed. Accordingly, the mat wire member 5 of the mat member 1 is supported by the end frame members at both ends, and a large tension is applied to the mat wire member 5 in the horizontal direction.
The mat member is lifted while maintaining a substantially horizontal state via the.

The hinge portion 20 is provided at each end in correspondence with a number of vertical frame members constituting a suspension frame, and the suspension wire 13 is optional with respect to the end frame member. Are provided. On the other hand, since the mat wire member is arranged at a fixed interval with respect to the mat member, for example, at 1 m interval, the mat wire locking portion 30 provided on the end frame member is provided on the mat. A large number of the mat wire members are arranged and provided in correspondence with the intervals of the mat wire members 5 to be arranged, so that each hinge portion can lock and hold each of the mat wire members.

In the above embodiment, the case where the vertical frame member is made of H-shaped steel has been exemplified. When the vertical frame member is configured using such a shape steel or steel pipe, in accordance with the shape of each structural material,
Means for rotatably supporting the end frame member with respect to the horizontal axis is provided.

The mat wire engaging portion 30 for supporting the mat wire member with respect to the end frame member can use a structure as shown in FIGS.
An interlocking wire 42 is arranged in parallel to the length direction of the link 15, and the interlocking wire 42 is supported via a wire guide 43.

An operating lever or the like operated by a worker is disposed at the end of the interlocking wire 42 to open the mat member on the sea floor or to hold the mat member on a suspension frame on land. Can be used to move the interlocking wire to the left in the drawing using the operation lever, but since the operation lever can have any configuration, its detailed structure The description is omitted.

The lever member 40 connected to the interlocking wire 42 via the locking member 41 is a fixed plate member.
The lever member 40 is swingably supported via a shaft support member 44 provided on the connecting member 34. A connecting plate 38 for moving the piston member is connected to the lower end of the lever member 40.

A piston member 36 for supporting the eye member 6 of the mat wire member 5 is provided slidably with respect to a cylinder member 33 fixed to the end frame member 15, and the piston member 36 is fixed to a fixed bracket. In the state of being inserted into the hole 32 of the 31, it is locked and held through the eye member 6. At the rear of the piston member 36, a connecting plate 38 is provided between the lower end of the lever member 40 and connected by pin members 37 and 39, and the pin member 39 is fixed to an end frame member. Plate member 34
To guide the connecting plate 38 to move laterally with respect to the end frame member.

In the mat wire engaging portion 30 configured as described above, when the mat member is lifted,
Position and place the suspension frame 10 on a mat member placed on land, or stop at a predetermined position in the air,
After positioning the eye members of many mat wire members of the mat member between the cylinder member 33 of the hinge portion and the fixed bracket 31, the interlocking wire 42 is pulled rightward in FIG. 5 to swing the lever member. This causes the piston member 36 of each hinge part to support it.

After the mat wire member is fixed and held with the piston member 36 supported by the cylinder member 33 and the fixing bracket 31, the suspension frame 10 is lifted using the suspension wires 13, 13a. Then, as shown in FIG. 2, the weight of the suspension frame 10 and the mat member 1 acts in a state of being distributed to each mat wire member. Is
It is applied substantially uniformly to a large number of mat wire members arranged on the mat member.

That is, a large tension is applied to each mat wire member arranged on the mat member by rotating the end frame member 15 so that the suspension frame and the mat wire member are parallel to each other. It is lifted so as to be in a substantially horizontal state without bending.

As described above, when the mat member is lifted by the asphalt mat suspension frame device of the present invention, a large tension acts on the mat wire member at an initial stage of performing the lifting operation of the suspension frame. When the mat member is lifted, it is possible to maintain a state substantially parallel to the hanging frame. Therefore, even when the temperature is low such that the asphalt mat hardens, when lifting the mat member, it is not necessary to maintain the operating speed of the crane at a low speed, and it is possible to maintain the same workability as at the time of high temperature. . Also, when laying the mat member lifted by the hanging frame at the construction site, the mat member keeps substantially horizontal, so that the entire mat member comes to land on the floor almost simultaneously.

On the other hand, when the conventional suspension frame is used, the central portion of the mat member is supported in a greatly bent state. There has been a demand for performing an operation of landing and then lowering the suspension frame slowly while correcting the bending of the mat member. Then, when constructing the mat member on the seabed, etc., immediately before the mat member is landed, the underwater worker determines the center of the mat member by visual inspection, transmits it to the crane operator, and transmits the suspension frame. Was positioned.

However, in many cases, the mat member is deviated from a predetermined position in a state where the mat end portion is landed. In this case, the mat member is lifted again and moved sideways in the water,
He was forced to perform complicated work such as landing again.

In the present invention, since the mat member is suspended in a substantially horizontal state with respect to the suspension frame, as described above, even when the mat member is landed on the laying site, the entire mat member is almost simultaneously placed on the sea floor. It can be in contact with the laying surface such as the ground. Then, it is not necessary to consider the correction of the bending of the mat member, and it is possible to lower the suspension frame at a high speed and position the mat member at the installation site.

Therefore, when the suspension frame of the present invention is used, the landing position of the end of the mat member can be accurately grasped, and the laying position does not shift. When laying underwater on the seabed, the efficiency of the laying operation can be improved.

[0035]

According to the construction described above, in the suspension frame of the present invention, end frames for supporting the ends of the asphalt mat wire member are provided at both ends of the rigid frame member. Since the end frame member converts the tension applied to the suspension wire via the horizontal shaft into the tension applied to the mat wire member, the mat wire member can be supported in a substantially horizontal state.

Accordingly, since the mat member suspended by the suspension frame does not bend significantly, deformation during lifting is taken into consideration in order not to cause the mat member to bend even in cold weather where asphalt hardens. It is not necessary to carry out cargo handling at a high speed, and the lifting work can be performed at a high speed. Also, at the time of cargo handling work by crane,
Since the mat member is not deformed so as to bend, the mat member is not damaged, and the mat member can be handled in a stable state.

In the present invention, since the mat member is suspended in a substantially horizontal state with respect to the suspension frame, the entire mat member is brought into almost simultaneous contact with the laying surface even when landing on the laying site. Therefore, it is not necessary to consider the correction of the bending of the mat member, and it is possible to lower the suspension frame at a high speed and position the mat member at the installation site.

Further, it is possible to accurately grasp the landing position of the end portion of the mat member, the displacement of the laying position does not occur, and even when the mat member is laid on the seabed ground, The efficiency of the laying work can be improved, and the work efficiency can be improved.

Further, in the device of the present invention, a plurality of locking members for locking the eye member provided at the end of the mat wire member can be simultaneously opened by using one interlocking member. In addition, the work of laying the asphalt mat can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a suspension frame of the present invention.

FIG. 2 is a side view showing the relationship between the suspension frame and the mat member of the present invention.

FIG. 3 is a side view showing a relationship between an end frame member arranged on a suspension frame and each wire.

FIG. 4 is an explanatory diagram showing a configuration of a hinge portion that rotatably supports an end frame member.

FIG. 5 is a side view showing a configuration of a mat wire locking portion for locking and holding a mat wire member.

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 is an explanatory diagram showing a configuration of a general asphalt mat.

FIG. 8 is an explanatory view of a state in which a mat member is lifted using a conventional hanging frame.

FIG. 9 is an explanatory diagram of a conventional support relationship between a hanging frame and a mat member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Asphalt mat 2 ... Asphalt layer 3, 4 ... Internal reinforcement member 5 ... Mat wire member 6 ... Eye member 7 ... End fixing plate member 8 ... Fixing plate 10 ... Hanging frame 11 ... Vertical frame member 12 ... Horizontal frame member 13 , 13a ... hanging wires 15, 15a ... end frame members 16, 16a ... upper brackets 20 ... hinge portions 21 ... webs 22 ... support shafts 23 ... horizontal brackets 24, 25 ... frame support plates 30 ... mat wire locking portions 31 ... Fixing bracket 32 ... Hole 33 ... Cylinder member 34 ... Fixing plate member 35 ... Long hole 36 ... Piston member 37 ... Pin member 38 ... Connecting plate 39 ... Pin member 40 ... Lever member 41 ... Locking member 42 ... Interlocking wire 43 ... Wire guide 44 ... Shaft support member 50 ... Suspension frame 53,53a ... End frame member 54,54a ... Locking tool 55,55a ... Suspension wire 56 ... Crane hook

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazusada Kikuchi 2-10-9 Akasaka, Minato-ku, Tokyo Japan Marine Construction Co., Ltd. (56) References JP-A-4-194120 (JP, A) Kaihei 9-125403 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 23/02 E02B 3/06

Claims (2)

(57) [Claims] 1. An end portion of a mat wire member arranged so as to penetrate the inside of an asphalt mat in a width direction, is locked and held by a locking member provided on a suspension frame, and the asphalt mat is used by the suspension frame. In the apparatus for lifting, an end frame member to be supported via a horizontal shaft disposed on both side ends of the hanging frame, a suspending wire provided on the end frame member, and a mat wire engaging portion are provided. An asphalt mat suspension frame device, wherein a tension applied to a wire is converted into a tension of a mat wire member of the asphalt mat to support the asphalt mat in a horizontal state. 2. A hanging frame comprising: a plurality of mat wire locking portions disposed on an end frame member; a means for interlockingly opening locking members of each mat wire locking portion; The asphalt mat suspension frame device according to claim 1, wherein an interlocking wire for the interlocking opening means is provided, and the locking member is simultaneously opened by the interlocking wire.