JPH047232Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a tool for leveling foundation rubble, etc., which is a branch of marine construction.

[Conventional technology]

Generally, in foundation work for seawalls, breakwaters, etc. in ports, sand, rubble, etc. are poured into the seabed, and then the top surface is leveled evenly. As a prior art leveling tool used for the leveling work, there is one proposed by the applicant of the present invention and disclosed in Japanese Patent Publication No. 1983-6107.

The above-mentioned leveling tool has a leveling member consisting of a combination of a comb-shaped plate and a push plate attached to the front of a frame equipped with a horizontal base plate, and a compaction roller is arranged at the back of the leveling member. It is rotatably supported, and a pair of arm bars for wire connection are connected to both ends of the upper surface of the horizontal substrate of the underframe, and the tips of the arm bars and both lower sides of the leveling member are connected by arm chains.

For example, this leveling tool is suspended by a hanging wire from a hoist installed at the stern of a self-propelled deck loading vessel, sunk to the seabed, held at the planned leveling surface by adjusting the length of the hanging wire, and then held by an arm bar. The lead wire connected to the tip of the Gatsuto ship is wound up with a winch installed at the bow of the Gatsuto ship, and while the lead wire is held at a predetermined length, the top surface of the rubble is leveled (roughly leveled) by the movement of the Gatsuto ship. ).

In addition, to move a Gatsuto ship, a method is adopted in which the anchor ropes at the bow and stern are anchored, and the anchor ropes are reeled in and unwound at low speed, at the same time allowing the ship to self-propel, or simply allowing the ship to self-propel.

With the above-mentioned leveling tool, it is necessary to always adjust the length of the hanging wire so that the leveling tool matches the leveling surface correctly, but simply adjusting the water depth will not change the tension angle of the lead wire. During leveling work, the lower end of the blade digs into the leveling surface and the pressure roller is lifted up, or the lower end of the blade lifts up, making it impossible to maintain a constant posture of the leveling tool.

Therefore, in conventional leveling tools, the length of the arm bar is adjusted according to changes in water depth to stabilize the posture of the leveling tool.

[Problem that the invention attempts to solve]

However, since the length of the arm bar is adjusted by rotating a nut screwed into the end of the arm bar, it is very time consuming to adjust the length of the arm bar, and adjusting the length of the arm bar can cause slack or tension in the arm chain. This causes the problem that the posture of the leveling tool is unstable when it is being towed.

In addition, since the arm bar is configured to move in its length direction, the relative relationship between the lead wire and the arm bar, whose tension angle changes according to changes in water depth, changes to maintain the leveling tool in a stable position. There is also the inconvenience of not being able to do so.

Furthermore, since the arm bar is supported movably in the longitudinal direction with respect to the underframe, the arm bar protrudes forward of the underframe when stored, which is extremely inconvenient for storing.

Therefore, the technical problem of this invention is to solve the above-mentioned disadvantages, stabilize the posture of the leveling tool during leveling work, and make it easier to store.

[Means for solving problems]

In order to solve the above problems, this invention connects the underframe that supports the leveling member and the arm bar to which the lead wire is connected with a universal joint, and connects the tip of the arm bar and the lower sides of the leveling member. The length of the arm chain that connects the two can be adjusted.

[Effect]

The leveling tool configured as described above regulates the attitude of the leveling tool using a hanging wire and a lead wire, and is pulled by the movement of the ship's body to perform leveling work. When the water depth on the leveling surface changes, the length of the hanging wire is adjusted and the leveling tool is raised and lowered to the desired position. As the tension angle of the lead wire changes as it moves up and down, the arm bar connected to the underframe with a universal joint rotates using the tension of the lead wire as an adjusting force.
The rotation causes tension or slack in the arm chain, so the length of the arm chain is adjusted to stabilize the attitude of the leveling tool.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIGS. 1 and 2, the underframe 1 has a rectangular support plate 2 on the top, and hanging rings 3 are attached to both front and rear edges of the support plate 2. As shown in FIGS. Further, a leveling member 4 is supported at the lower front side of the support plate 2.

This leveling member 4 has a large number of arc-shaped blades 5 arranged in a comb-teeth pattern, the upper part of which is supported by the front part of the support plate 2, and a push plate 6 is passed between the central parts of the front edges of the blades 5. , the lower end of each blade 5 is made to protrude a required length below the lower edge of the push plate 6. Further, on the front surface of the push plate 6, a plurality of plow members 7 are provided.
Each plow member 7 is attached with a required interval between them.
Inclined surfaces 8 are provided on both sides of the plate.

Further, a pair of support pieces 9 are attached to both front ends of the upper surface of the support plate 2, and a rear end of an arm bar 11 is connected to the support pieces 9 via a universal joint 10.

Although any arbitrary joint can be used as the universal joint 10, here, a connecting block 13 having a bifurcated piece 12 is used, the rear end of the connecting block 13 is connected to the support piece 9 with a pin 14, and Attach the arm bar 11 to the forked piece 12 at the tip via the pin 15.
The rear end portion is rotatably supported, and the axes of the two connecting pins 14 and 15 intersect with each other.

A wire connector 16 is attached to the tip of the arm bar 11. Also, arm bar 11
There are two mutually connected shackle 1 at the tip of the
7 and 18 are connected, and the front shackle 18
One end of the arm chain 20 is connected to a pin 19 that is detachably supported on the arm chain 20.
The other end is connected to the lower side of the leveling member 4.

A high pressure water supply pipe 21 is installed on the back of the leveling member 4.
is arranged, and a plurality of nozzles 22 are connected at equal intervals in the length direction on the front side of the supply pipe 21,
The high pressure water sent to the supply pipe 21 is sent to each nozzle 22.
from the front of the push plate 6. For this reason, a hole 23 is provided in the push plate 6 at a position facing the nozzle 22.

Further, one end portion of a pair of roller arms 24 is rotatably supported in the central portions of both sides of the leveling member 4, and a rolling pressure roller 25 is mounted between the other end portions of the roller arms 24.
is rotatably provided.

A rod 2 is attached to the other end of the roller arm 24.
The lower end of the spring 28 is rotatably attached via a pin 27, and the upper end of the spring 28 fitted to the lower part of the rod 26 is supported by the top plate 30 of the spring box 29 provided on the support plate 2. The lower end is brought into contact with the roller arm 24 and the roller arm 24 is pushed down so that the weight of the underframe 1 is applied to the compaction roller 25.

Further, a spring receiver 31 is attached to the upper part of the rod 26, and a buffer spring 32 is fitted on the outside of the rod 26 between the spring receiver 31 and the top plate 30, so that the roller arm 24 can be moved downward rapidly. This causes the buffer spring 32 to contract, thereby preventing the roller arm 24 from instantaneously moving downward.

In the case of the embodiment, as shown in FIG. 4, an oval movable ring 33 is attached to the other end of the roller arm 24, and a pair of oval fixed rings 34 are attached to the support plate 2, and the fixing ring 33 is attached to the support plate 2. Although the brake pin 35 is removably inserted between the ring 34 and the movable ring 33 to limit the amount of elevation of the roller arm 24, the above-described limiting mechanism may be omitted. 36 shown in FIG. 2 indicates a weight.

The rubble leveling tool shown in the embodiment has the above structure, and in order to level the foundation rubble using this leveling tool, as shown in FIG. The leveling tool is suspended by a hanging wire 42 and submerged in water, and the lead wire 43 connected to the tip of the arm bar 11 is wound up with a winch (not shown) provided at the bow to maintain the lead wire 43 at a predetermined length. Then, the leveling tool is towed by the movement of the hull 40.

Now, when the leveling tool is held at the height of the planned leveling surface by adjusting the length of the hanging wire 42 and the leveling tool is towed by the movement of the hull 40, the rubble above the planned leveling surface will be removed. is leveled by the lower end of the blade 5, and is pushed by the push plate 6, and the following rolling pressure roller 2
5 rolls the upper surface of the foundation rubble 44, so that the upper surface of the foundation rubble 44 can be leveled almost uniformly.

By the way, in the above-mentioned leveling work, when the height of the leveling tool is adjusted by adjusting the length of the hanging wire 42, the tension angle of the lead wire 43 changes.
The tension of the lead wire 43 is
Arm bar 1 acts as a rotation adjustment force for
1 is rotated upward or downward and held in a stable state. Therefore, by adjusting the length of the arm chain 20 in advance according to the water depth of the leveling surface, or by adjusting the length of the arm chain 20 after the arm bar 11 is rotated, the leveling tool can be towed in a stable posture. be able to.

The length of the arm chain 20 can be adjusted by pulling out the pin 19 inserted into the shackle 18 and changing the insertion position of the pin 19 with respect to the arm chain 20.

〔effect〕

As described above, this invention connects the arm bar for wire connection and the frame with a universal joint, and makes the length of the arm chain that connects the tip of the arm bar and the lower parts of both sides of the leveling tool adjustable. The arm bar can be automatically rotated to a stable position by the tension of the lead wire during leveling work. Therefore, by adjusting the length of the arm chain according to changes in the water depth on the leveling surface, a predetermined tension can be applied to each of the arm bar and the arm chain, thereby stabilizing the posture of the leveling tool. be able to. As a result, the leveling work can be performed reliably, and the arm bar can be turned in any direction, making it convenient for storage.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional side view showing an embodiment of the leveling tool according to this invention, Fig. 2 is a partially cutaway front view of the same as above,
FIG. 3 is an enlarged plan view showing a part of the same, FIG. 4 is a perspective view of the same, FIG. 5 is a longitudinal sectional front view of the same, and FIG. 6 is a side view showing the same in use. DESCRIPTION OF SYMBOLS 1... Underframe, 4... Leveling member, 10... Universal joint, 11... Arm bar, 20... Arm chain, 25... Compacting roller.

Claims (1)

[Scope of utility model registration request] A leveling member equipped with a push plate is provided on the front side of the underframe, a compacting roller is arranged on the back of the leveling member, and a pair of arm bars for connecting wires are connected to both upper ends of the underframe. A rubble leveling device in which the tip of an arm bar and the lower portions of both sides of the leveling member are connected by arm chains, characterized in that the arm bar and the underframe are connected by a universal joint, and the length of the arm chains is adjustable. A rubble leveling tool.