JPH10258792A - Dredger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the work of replacing a hull-borne revolving superstructure with another and thus to reduce the cost and period necessary for the replacement work. SOLUTION: Between a base seat 36 provided on a hull and a revolving ring 18 attached to a hull-borne revolving superstructure, a joint frame 37 is provided which comprises a round body 38 detachably attached to the inner ring 20 of the revolving ring 18 and a base body 39 detachably attached to the base seat 36. In order to replace the hull-borne revolving superstructure with another, even if the revolving ring 18 attached to the revolving superstructure and the base seat 3 are different from each other in diameter dimensions, the revolving ring 18 is surely attached to the base seat 36 of the ship body via the joint frame 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dredger suitably used for dredging work in, for example, a harbor or a river.

[0002]

2. Description of the Related Art In general, a dredger is widely known as having a working machine such as a hydraulic shovel or a hydraulic crane mounted on a hull and performing a dredging work in a port or a river (for example, Japanese Utility Model Laid-Open No. HEI-1). 42777).

[0003] A conventional dredger of this type will be described with reference to FIGS. 6 to 9. Reference numeral 1 denotes a hull, and the hull 1 has a deck 2, a bottom 3, and the like. A large-diameter mounting hole 2A to which a pedestal 7 described later is mounted is formed.

A pedestal 7 is provided between the deck 2 and the ship bottom 3.
Is provided. The support cylinder 4 is provided with four partition plates 5, 5,... Connecting the deck 2 and the bottom 3 with the front and rear positions. The left and right positions are enclosed. Then, the outer peripheral surface of the support cylinder 4 and each partition plate 5
Are connected by a plurality of reinforcing ribs 6, 6,... Extending radially from the outer peripheral side of the support cylinder 4 (see FIG. 8). , The support cylinder 4, the respective partition plates 5, the respective reinforcing ribs 6, and the like, so that the entire hull 1 is received.

[0005] Reference numeral 7 denotes a thick cylindrical pedestal protruding from the deck 2 of the hull 1. The pedestal 7 has its outer peripheral surface welded to the mounting hole 2A of the deck 2 over the entire circumference. The lower end is welded to the upper end of the support tube 4. At the upper end of the pedestal 7, a number of bolt holes 7A are threaded circumferentially at a constant pitch in the circumferential direction (see FIG. 9).

Reference numeral 8 denotes a hydraulic excavator as a working machine mounted on the deck 2 of the hull 1, and the hydraulic excavator 8 is mounted on a pedestal 7 so as to be rotatable via a rotating wheel 18 described later. 9 and a working device 14 described below, which is provided at the center of the front part of the revolving body 9 so as to be able to move up and down.

Here, the revolving body 9 has a revolving wheel 18 on the lower surface side.
Is composed of a turning frame 10 to which is fixed, a cab 11, a machine room 12, a counterweight 13 and the like provided on the turning frame 10. The working device 14
Has a boom 15 whose base end side is attached to the revolving body 9 so as to be able to move up and down, an arm 16 which is attached to the distal end side of the boom 15 so as to be rotatable, and which is attached to the distal end side of the arm 16 so as to be able to rotate. It consists of a bucket 17 and the like.

A turning wheel 18 is provided between the pedestal 7 of the hull 1 and the turning body 9 to rotatably support the hydraulic excavator 8. The turning wheel 18 is a turning frame 1 of the turning body 9.
0, an outer ring 19 bolted to the lower surface, an inner ring 20 bolted to the upper end of the pedestal 7, and a number of steel balls 21 provided between the outer ring 19 and the inner ring 20. Internal teeth 20 </ b> A are formed on the entire inner circumference of the inner race 20, and the internal teeth 20 </ b> A are formed by a pinion of a drive source provided in the machine chamber 12 of the revolving body 9 (none of them is shown). ). Therefore, when the pinion is rotationally driven, the pinion revolves (turns) around the internal teeth 20A, and the revolving body 9 is driven to turn on the pedestal 7 by the revolution of the pinion.

Here, a large number of through-holes 20B are formed in the inner ring 20 of the turning wheel 18 at a constant pitch in the circumferential direction, and the diameter of the circumference formed by each of the through-holes 20B (turning). The diameter of the wheel 18) and each bolt hole 7A screwed into the pedestal 7.
The diameter of the circumference (diameter of the pedestal 7) is set to the same diameter A as shown in FIG. The turning wheel 18 is fastened to the upper end of the pedestal 7 by a bolt 22 screwed into each bolt hole 7A through each through hole 20B of the inner ring 20.

The dredger according to the prior art has the above-mentioned structure. For example, as shown in FIG. Perform dredging work to excavate earth and sand.

[0011]

In the above-mentioned dredger, the service life of the excavator 8 is usually shorter than the service life of the hull 1;
When the service life of the hull 1 is exceeded, it is necessary to mount a new hydraulic shovel on the hull 1 instead of the hydraulic shovel 8,
At this time, it may be required to replace the excavator 8 with a larger excavator than the existing excavator 8.

However, in the above-mentioned conventional dredger, the inner ring 20 of the turning wheel 18 is directly fastened to the upper end of the pedestal 7 provided on the hull 1 by bolts 22. For this reason, for example, the excavator 8 is mounted on the hull 1.
When a larger hydraulic excavator is mounted, the diameter of the turning wheel provided on the large hydraulic excavator is adjusted to the pedestal 7.
If the diameter A is larger than the diameter A, it is necessary to modify the pedestal 7 on the hull 1 side in accordance with the diameter of the turning wheel.

As described above, when the pedestal 7 provided on the hull 1 is modified, not only is the pedestal newly manufactured, but also the support cylinder 4 that has supported the lower side of the existing pedestal 7, Since the reinforcing ribs 6 for reinforcing the support tube 4 also need to be newly manufactured according to the pedestal to be replaced and welded to the hull 1, a significant increase in cost and replacement work is required. There is a problem of prolongation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and can easily perform a work of replacing a revolving superstructure mounted on a hull, and can reduce the cost and work period required for the replacement work. The purpose is to provide a dredger that has been optimized.

[0015]

In order to solve the above-mentioned problems, the present invention provides a hull having a pedestal, a revolving body mounted on the pedestal of the hull via a revolving wheel, and The present invention is applied to a dredger including a working device provided on a revolving body so as to be able to move up and down.

A feature of the structure adopted in the first aspect of the present invention is that a joint frame that can be exchanged according to the diameter of the turning wheel is provided between the hull and the turning body. It is in.

According to the above configuration, the lower side of the joint frame is attached to the pedestal of the hull, and the upper side of the joint frame is attached to the revolving wheel, so that the revolving unit can pivot on the pedestal of the hull via the joint frame. Mounted on In this case, since the joint frame is replaceable in accordance with the diameter of the revolving wheel, for example, when replacing an existing revolving structure mounted on the hull with a new revolving structure having a different model, size, and the like, Even when the diameter of the revolving wheel provided on the new revolving unit does not correspond to the diameter of the existing pedestal, the new revolving unit can be easily mounted on the existing pedestal via the joining frame.

Further, the invention according to claim 2 is characterized in that the joint frame is removably attached to the revolving wheel, and a base is provided integrally with the revolved body and detachably attached to a pedestal of the hull. Wherein the round body has a diameter corresponding to a diameter of the turning wheel.

According to the above construction, the base of the joint frame is mounted on the pedestal of the hull, and the round body is mounted on the revolving wheel of the revolving body. Therefore, the diameter of the revolving wheel provided on the revolving body is provided on the hull. Even if it does not correspond to the existing pedestal that has been made, by using a joint frame having a round body of a diameter corresponding to the diameter of the slewing ring, the pedestal and the slewing ring can be reliably connected via the joint frame. Can be linked.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a dredger according to the present invention will be described below in detail with reference to the accompanying drawings.

Here, FIGS. 1 to 3 show a dredger according to a first embodiment of the present invention. In this embodiment, the same components as those of the above-described prior art are denoted by the same reference numerals, and description thereof will be made. Shall be omitted.

In the drawing, reference numeral 31 denotes a dredger according to the present embodiment. The dredger 31 has a hull 32 described later, a revolving unit 9 mounted on the hull 32, and a working device, in substantially the same manner as the conventional dredger. Although generally constituted by a hydraulic excavator 8 composed of 14 or the like, a joint frame 37 described later is provided between the hull 32 and the revolving superstructure 9.

Reference numeral 32 denotes a hull. The hull 32 has a deck 33 and a bottom 34 substantially similar to the hull 1 according to the prior art, and a support cylinder 35 (see FIG. 2) is provided between the deck 33 and the bottom 34.
Each partition plate, reinforcing ribs (both not shown) and the like are provided. However, a pedestal 36 having a larger diameter than the pedestal 7 according to the prior art, which will be described later, protrudes from the deck 33, and
The third mounting hole 33 </ b> A, the support cylinder 35, and the like are formed with a diameter corresponding to the pedestal 36.

Reference numeral 36 denotes a pedestal according to the present embodiment, which is provided on the deck 33 of the hull 32 instead of the pedestal 7 according to the prior art. The pedestal 36 has a thick cylindrical shape having a larger diameter than the pedestal 7 according to the prior art. And the outer peripheral side thereof is the mounting hole 3 of the deck 33.
3A, and the lower end is welded to the upper end of the support cylinder 35.

At the upper end of the pedestal 36, a number of bolt holes 36A are circumferentially threaded at a constant pitch in the circumferential direction as shown in FIG. Then, the diameter B of the circumference formed by the bolt holes 36A provided in the pedestal 36 (the pedestal 3
6), for example, in consideration of replacing the existing hydraulic excavator 8 mounted on the hull 32 with a large-sized hydraulic excavator, is larger than the diameter of the turning wheel provided on the large-sized hydraulic excavator. The diameter is set.

Reference numeral 37 denotes a joint frame provided between the pedestal 36 of the hull 32 and the revolving unit 9.
Reference numeral 7 denotes a round body 38 which is detachably attached to the lower surface of the inner ring 20 of the revolving wheel 18 and which is welded to the lower end of the round body 38 as shown in FIGS. An annular reinforcing member 40 is provided between the round body 38 and the base 39 so that the annular reinforcing member 40 can be attached.

Here, the round body 38 is formed as a thick cylindrical body, and a large number of bolt holes 3 are formed on the upper surface thereof over the entire circumference.
8A is threaded circumferentially. The diameter of the circumference formed by the bolt holes 38A (the diameter of the round body 38) is the diameter A of the circumference formed by the through holes 20B formed in the inner ring 20 of the turning ring 18 (the turning diameter of the turning ring). 18 diameter dimension)
The bolt 22 is inserted into each bolt hole 38A through each through hole 20B.
, The round body 38 is detachably attached to the turning wheel 18.

The base 39 is welded to the outer periphery of the lower end of the round body 38, and is formed as a thick annular plate whose diameter is expanded in a flange shape from the round body 38. A large number of through holes 39A are formed in a circumferential shape. here,
Diameter of circumference formed by each through hole 39A (diameter of base 39)
Corresponds to the diameter B of the circumference (diameter of the pedestal 36) formed by the bolt holes 36A screwed into the pedestal 36, and the bolt 41 is screwed into each of the bolt holes 36A through the respective through hole 39A. By being inserted, the base 39 is detachably attached to the upper end of the pedestal 36.

The reinforcing member 40 is formed as an annular frame having an L-shaped cross section having an outer diameter dimension not to interfere with the head of the bolt 41 inserted into each through hole 39A of the base 39. The reinforcement member 40 secures the vertical strength of the joint frame 37 by welding the inner periphery of the upper end portion to the outer peripheral surface of the round body 38 and welding the lower end portion to the base 39.

This embodiment has the above-described structure. When the revolving superstructure 9 is mounted on the hull 32, first,
The base 39 of the joint frame 37 is arranged at the upper end of the pedestal 36 protruding from the hull 32, and the bolt 41 is screwed into each bolt hole 36A of the pedestal 36 through each through hole 39A of the base 39. This fixes the joint frame 37 on the pedestal 36.

Next, the revolving wheel 18 (the inner ring 20) provided on the revolving frame 10 of the revolving body 9 is arranged on the round body 38 of the joint frame 37, and the bolt 22 is inserted through each through hole 20 B of the inner ring 20. The revolving wheel 18 is fixed on the round body 38 of the joint frame 37 by screwing into the bolt holes 38A of the round body 38.

Thus, the base 39 of the joint frame 37 is fixed to the pedestal 36 by the bolt 41, and the round body 38 of the joint frame 37 is fixed to the inner ring 20 of the turning wheel 18 by the bolt 22. The revolving structure 9 is mounted on the pedestal 36 of the hull 32 via the through hole.

Then, as shown in FIG. 1, the dredger 31 rotates the revolving body 9 on the
By operating the working device 14 provided in the basin, the work of excavating the earth and the like deposited on the water bottom by the bucket 17 (dredge work) is performed.

In this embodiment, the pedestal 3 of the hull 32 is
6 and the turning wheel 18 attached to the excavator 8 are connected via a joint frame 37. In the present invention, the joint frame 37 is mounted on the hull 32 by replacing the joint frame 37. The existing hydraulic excavator 8 can be easily replaced with a large hydraulic excavator.

Next, FIGS. 4 and 5 relate to a second embodiment of the present invention. This embodiment illustrates a case in which a large hydraulic excavator is mounted on the hull 32. FIG. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

In the drawing, reference numeral 51 denotes a dredger according to the second embodiment. The dredger 51 pivots on a hull 32 and a pedestal 36 of the hull 32 in substantially the same manner as the dredger 31 according to the first embodiment. Hydraulic excavator 5 to be described later, which is mounted as possible
2 and a joint frame 63 described below provided between the excavator 52 and the pedestal 36. But,
The excavator 52 is an excavator 8 according to the first embodiment.
The splicing frame 63 is larger than the splicing frame 37 and has a larger diameter than the splicing frame 37 according to the first embodiment.

Numeral 52 denotes a hydraulic shovel applied to the present embodiment. The hydraulic shovel 52 is, like the hydraulic shovel 8 according to the first embodiment, a revolving body 53 and an elevating center at the front center of the revolving body 53. The revolving unit 53 is composed of a revolving frame 55, a driving room 56, a machine room 57, and a counterweight 58 provided on the revolving frame 55. However, the hydraulic excavator 52 is larger than the hydraulic excavator 8 according to the first embodiment, and a swivel wheel 59 having a larger diameter than the swivel wheel 18 according to the first embodiment is provided on the lower surface of the swivel frame 55. .

As shown in FIG. 5, the revolving wheel 59 includes an outer ring 60 bolted to the lower surface of the revolving frame 55 of the revolving body 53, an inner ring 61 bolted to the upper end of the base 36, and an outer ring. The inner ring 61 includes a number of steel balls 62 provided between the inner ring 61 and the inner ring 61. The inner ring 61 has inner teeth 61A formed on the entire inner circumference thereof. Here, the inner ring 61
, A large number of through-holes 61B are circumferentially formed at a constant pitch in the circumferential direction, and the diameter C of the circumference formed by each of the through-holes 61B (the diameter of the turning ring 59) is the first. The diameter is set to be larger than the diameter A of the turning wheel 18 according to the embodiment.

Reference numeral 63 denotes a splicing frame applied to the present embodiment instead of the splicing frame 37 according to the first embodiment.
The joint frame 63 is, similarly to the joint frame 37, removably attached to the lower surface of the inner ring 61 of the revolving wheel 59, and is fixed to the lower end of the circular body 64, and is attached to and detached from the upper end of the pedestal 36. An annular base 39 movably attached, and an annular reinforcing member 65 provided between the round body 64 and the base 39.
However, the circular cylinder 64 has a larger diameter than the circular cylinder 38 of the joint frame 37 according to the first embodiment.

Here, a large number of bolt holes 64A are circumferentially threaded at a constant pitch in the circumferential direction on the upper surface side of the round body 64, and the diameter of the circumference formed by each bolt hole 64A (round) The diameter of the trunk 64) is equal to the diameter C of the circumference (diameter of the turning ring 59) formed by the respective through holes 61B formed in the inner ring 61 of the turning ring 59. The round body 64 is detachably attached to the revolving wheel 59 by screwing the bolts 22 into the bolt holes 64A through the through holes 61B.

The present embodiment has the above-described structure. Instead of the excavator 8 according to the first embodiment, a hydraulic excavator 52 larger than the hydraulic excavator 8 is connected to the hull 32.
When mounted on the top, first, the bolts 41 for fastening the pedestal 36 of the hull 32 and the base 39 of the joint frame 37 are removed, for example, the joint frame 37 is removed from the pedestal 36 together with the hydraulic shovel 8.

Next, the base 39 of the joint frame 63 is arranged on the pedestal 36 of the hull 32, and the through holes 39A of the base 39 are arranged.
The joint frame 63 is fixed on the pedestal 36 by screwing the bolts 41 into the respective bolt holes 36A of the pedestal 36 via the.

A revolving wheel 59 (inner ring 61) provided on a revolving body 53 constituting the hydraulic excavator 52 is disposed on a round body 64 of a joint frame 63, and each through hole 61 of the inner ring 61 is provided.
By screwing the bolt 22 into each bolt hole 64 </ b> A of the round body 64 via B, the turning wheel 59 is fixed on the round body 64 of the joint frame 63.

Thus, the base 39 of the joint frame 63 is fixed to the base 36 by the bolt 41,
3 with the bolt 22 to the inner ring 6 of the turning wheel 59.
By fixing the revolving body 1 to the revolving body 53, the revolving body 53 can be pivotally mounted on the pedestal 36 of the hull 32 via the joint frame 63.

As described above, according to the embodiment of the present invention, when the excavator 8 mounted on the hull 32 is replaced with a large-sized excavator 52, the diameter of the turning wheel 59 attached to the excavator 52 is changed. Even if C becomes larger than the diameter A of the turning wheel 18 attached to the hydraulic excavator 8, the connecting frame 37 having the round body 38 having the diameter corresponding to the diameter A of the turning wheel 18 can be used. The hydraulic excavator 8 can be easily exchanged with the large-sized hydraulic excavator 52 simply by exchanging it with the joint frame 63 having the round body 64 having a diameter corresponding to the diameter C of 59.

As a result, it is not necessary to modify the pedestal or the like of the hull in accordance with the diameter C of the turning wheel 59 attached to the excavator 52, for example, and the cost associated with exchanging the excavator can be greatly reduced. In addition, the replacement work can be performed in a short period of time.

Conversely, a large hydraulic excavator 5 is mounted on the hull 32.
When the hydraulic excavator 52 is replaced with a small hydraulic excavator 8 in a state where the hydraulic excavator 2 is mounted, the joint frame 63 having the round body 64 having a diameter corresponding to the diameter C of the turning wheel 59 is also used. By simply replacing the excavator 52 with the joint frame 37 having the round body 38 having a diameter corresponding to the diameter A of the revolving wheel 18, the hydraulic excavator 52 can be easily replaced with the small hydraulic excavator 8.

As a result, it is not necessary to modify the pedestal or the like of the hull in accordance with the diameter A of the turning wheel 18 attached to the excavator 8, for example, and the cost involved in exchanging the excavator can be greatly reduced. In addition, the replacement work can be performed in a short period of time.

In each of the above embodiments, the joint frame 37 (63) having the cylindrical pedestal 36 projecting from the hull 32 and having the annular base 39 corresponding to the pedestal 36 has been described as an example. However, the present invention is not limited to this. For example, a configuration may be adopted in which a rectangular cylindrical base is protruded from the hull, and a polygonal base corresponding to the rectangular cylindrical base is provided in the joint frame.

Further, in each of the above embodiments, the dredger 3 having the hydraulic excavator 8 (52) mounted on the hull 32 as the dredger is used.
Although 1 (51) has been described as an example, the present invention is not limited to this, and can be applied to, for example, a dredger having a hydraulic crane mounted on a hull in a rotatable manner.

[0051]

As described in detail above, according to the first aspect of the present invention, the diameter of the swivel wheel is set between the hull and the revolving body mounted on the pedestal of the hull via the swivel wheel. The replacement frame can be replaced accordingly.For example, when replacing the existing revolving structure mounted on the hull with a new revolving structure with a different model, size, etc., it is attached to this new revolving structure. Even when the diameter of the revolving wheel to be used does not correspond to the diameter of the existing pedestal, the revolving structure mounted on the hull can be easily exchanged by exchanging the joint frame. As a result, it is not necessary to remodel the pedestal or the like of the hull so as to correspond to the revolving wheel of the new revolving unit, and the cost and time required for replacing the revolving unit can be greatly reduced.

According to the second aspect of the present invention, the joint frame includes a round body detachably attached to the revolving wheel, and a base provided integrally with the round body and detachably attached to the pedestal of the hull. And the round body has a diameter corresponding to the diameter of the revolving ring, so use a joint frame having a round body having a diameter corresponding to the revolving ring attached to the revolving body to be replaced. Thereby, the pedestal and the revolving wheel can be reliably connected via the joint frame, and workability at the time of replacing the revolving body can be greatly improved.

[Brief description of the drawings]

FIG. 1 is an external view showing a dredger according to a first embodiment.

FIG. 2 is an enlarged longitudinal sectional view showing a pedestal, a turning wheel, a joint frame, and the like in FIG. 1;

FIG. 3 is a perspective view showing an appearance of a joint frame.

FIG. 4 is an external view showing a dredger according to a second embodiment.

5 is an enlarged longitudinal sectional view of the same position as FIG. 2 showing a pedestal, a turning wheel, a joint frame and the like in FIG. 4;

FIG. 6 is an external view showing a conventional dredger.

7 is a longitudinal sectional view showing a hull, a pedestal, a turning wheel, and the like in FIG. 6;

8 is a cross-sectional view as viewed from the direction of arrows VIII-VIII in FIG. 7;

9 is an enlarged longitudinal sectional view showing a pedestal, a turning wheel, and the like in FIG. 7;

[Explanation of symbols]

 9,53 revolving body 14,54 work equipment 18,59 revolving wheel 31,51 dredger 32 hull 36 pedestal 37,63 splicing frame 38,64 round body 39 base

Claims (2)

[Claims] 1. A dredging ship comprising a hull having a pedestal, a revolving body mounted on the pedestal of the hull via a revolving wheel, and a working device provided on the revolving body so as to be able to move up and down. A dredger characterized in that a splicing frame that can be replaced according to the diameter of the revolving wheel is provided between the hull and the revolving body. 2. The round frame comprises a round body detachably attached to the revolving wheel and a base provided integrally with the round body and detachably mounted on a pedestal of the hull. 2. The dredger according to claim 1, wherein the dredge has a diameter corresponding to a diameter of the swirl ring. 3.