JP2733721B2 - Sediment transporter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a reverse construction method for building foundation work. In the case of precasting floor structural concrete, it is used not only for horizontal transportation of excavated earth and sand, but also for earth and sand in narrow places. It relates to a sediment transport vehicle used for transportation.

[0002]

2. Description of the Related Art Conventionally, earth and sand transportation in a narrow place is performed by a shovel dozer, a belt conveyor, or the like. As a special transport, there is a transport vehicle that runs on rails in a coal mine or the like. Means for carrying out a series of steps of loading, transporting and discharging the excavated soil include a scraper for civil engineering work, but a very large machine.

[0003]

According to the above-mentioned reverse striking method,
Since the temporary columns supporting the superstructure are installed under the main columns, the discharging means must travel so as not to contact the temporary columns in the forest and the ground is soft. In this case, in particular, in a construction method using the ground as a formwork and a support for the floor structure, a method for minimizing ground disturbance is required.

However, in a machine that travels on the ground, such as a shovel dozer, the ground pressure of the track (caterpillar) is large, so that the track (caterpillar) penetrates into the ground and becomes rough, and the ground is disturbed by turning. In addition, since the earth and sand conveyance path changes every moment, the work becomes complicated to install a belt conveyor and rails.

[0005] The present invention has been proposed in view of the above-mentioned problems of the prior art, and its object is to eliminate the possibility of ground disturbance or destruction, to improve soil removal efficiency and improve workability. Another object of the present invention is to provide a sediment transport vehicle that can achieve the above.

[0006]

In order to achieve the above object, an earth and sand carrier according to the present invention is provided on a traveling frame equipped with a crawler so as to be rotatable left and right by 180 ° around a central vertical axis of the frame. A slide base is slidably mounted on the mounted turning base in the longitudinal direction of the base,
At the end of an arm rotatably supported in the vertical direction on the slide base, a transfer bucket also serving as a shovel is pivotally supported about a horizontal axis.

[0007]

Since the earth and sand carrier according to the present invention is constructed as described above, the turning base mounted on the traveling frame equipped with the crawler is rotated by 180 ° about the center vertical axis of the frame. Accordingly, the crawler can discharge the soil simply by traveling in a straight line to the earth discharging position in the direction opposite to the direction of scooping the earth and sand with respect to the crawler, thereby obviating the need for the crawler to turn the entire earth and sand transport vehicle. Further, the traveling direction of the earth and sand transport vehicle is slightly changed by utilizing the rotation difference between the right and left crawlers to minimize the ground kneading.

When earth and sand are scooped up by the bucket also serving as the shovel, an eccentric load is applied, and the ground reaction force concentrates near the bucket of the crawler. Therefore, the arm is rotated in the vertical direction and the slide base is rotated. Is moved on the revolving base to move the bucket close to the center of the crawler, thereby equalizing the load from the crawler to the ground.

Further, according to the present invention, a series of operations from loading of excavated earth and sand to discharging of earth are performed by one earth and sand carrier.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIGS. 1 and 2 show the state of implementation of 1991 Patent Application No. 305982 "Method of Building Underground Buildings" proposed by the present applicant so as to introduce as much mechanical power as possible into the underground construction work by the reverse construction method. . This method is a construction method in which the above-ground construction and underground construction proceed simultaneously. After constructing temporary columns 1 that support the above-ground structure and underground continuous walls 2 that prevent groundwater springing and support side earth pressure, At the same time, the floor structure S and the rail 5 on which the excavator 4 for excavating the underground ground 3 is movably suspended are installed on the ground as a formwork and a support, and the excavator 4 excavates the ground 3 The granular earth and sand 6 are then transported horizontally by the earth and sand transporting vehicle 7 according to the present invention, which is loaded onto the clam shell 8, further on the belt conveyor 9 and the truck 10, and carried out of the site.

It is a main object of the present invention that the soil transport vehicle 7 has a structure that does not damage the ground 3. For this purpose, the soil transport vehicle 7 does not have a function of excavating the ground 3 and simply scoops up the granular sand 6 that has been ground. Immediately, as shown at 7 ', the center of gravity is moved to the center of the earth-and-sand transport vehicle 7' to reduce the eccentric load during traveling and to prevent the ground 3 from being damaged. The sediment transporting vehicle 7 ″ moved to a place where the soil is carried out by the clam shell 8 is turned in the earth discharging direction, performs an operation reverse to that of loading the earth and sand, and discharges the earth and sand 6 ′.

FIGS. 3 to 7 show a sediment transport vehicle 7 according to the present invention.
A power source / control unit 11 is provided with devices such as a power receiving device, a hydraulic device, and a microcomputer for control, and also serves as a counterweight for maintaining a load balance by its own weight. The power source / control unit 11 can always hold a fixed direction by the arm 12 and the direction holder D. The same-direction holder D is rotatably supported on both ends of a shaft 16 via pins at the respective ends of an arm 13 fixed to the power source / control unit 11 and an arm 15 fixed to the turning base 14. Thus, the two arms 13 and 15 are configured to maintain the parallelism. The arm 12 is an arm 17 fixed to the lower end.
In addition, a hydraulic jack 19 having both ends pin-joined to a bearing 18 fixed to the revolving base 14 is rotated by expansion and contraction to maintain balance.

The bucket 20 is rotatably supported on a rotating shaft 22 on which a sprocket 21 is mounted. Rotary axis 2
A pair of left and right arms 23 supporting the two 2 are fixed to each other by a horizontal connecting member 24 to form an integral structure. The center of rotation of the arm 23 is fixed via a pipe-shaped shaft 25, and the coaxial 25 is rotatably supported by a bearing member 27 attached to the tip of a slide base 26.

One end of a hydraulic jack 29 is pin-connected to the distal end of an arm 28 which is formed by connecting the pipe-shaped shaft 25 and the horizontal connecting member 24 and each of which is firmly fixed. I have. The other end of the hydraulic jack 29 is pin-joined to a bearing 30 fixed to the slide base 26 so that the arm 23 can be set at an arbitrary intermediate position between the positions shown in FIGS. It is configured.

Next, the pipe-shaped shaft 25 is rotatably fitted coaxially and precisely with a bearing or the like (not shown) at the center thereof, and has a shaft 33 to which sprockets 31 and 32 are fixed at both ends. A shaft 38, which is rotatably supported by bearings 34, has sprockets 35 fixed at both ends, and has a gear 36 fixed at the center, is provided above the slide base 26. When the motor 39 is driven under the control of the power source / control section 11, the driving gear 37 of the motor 39,
The shaft 38 rotates via a gear 36 meshing with the gear 37, and the chain 4 bridged between the sprockets 35 and 32.
Chain 4 spanned between sprockets 31 and 22 from 0
1 is transmitted, and the bucket 20 rotates. Thereby, the bucket 20 can be set at an arbitrary angle.

Also, sprockets 22, 31, 32, 35
Since the rotation angle of the sprocket 35 is always transmitted to the sprocket 21 irrespective of the rotation angle of the arm 23 by making these diameters the same diameter, for example, when the bucket 20 'in FIG. 39 stops and puts,
When the hydraulic jack 29 is driven to bring the arm 23 into the state shown in FIG. 4, the vertical rotation angle of the bucket remains unchanged and the state shown at 20 in FIG. 4 is maintained, so that the scooped earth and sand is stable.

A roller 42 is rotatably mounted inside the lower portion of the slide base 26, and the play is fitted to the swivel base 14 as little as possible, so that the slide base 26 can slide on the swivel base 14 smoothly. The same axis as the axis of the pinion 44 meshing with the rack 45 fixed to the turning base 14 is driven, and the motor 43 fixed to the slide base 26 is driven to drive the slide base 2 as shown in FIG.
6 can be slid on the swivel base 14 to allow the bucket 20 to be retracted to a position near the center point.

At this time, the drive of the hydraulic jack 19 draws the power source / control unit 11 to the center, and balances the load of the bucket 20. Next, the hydraulic motor 46 is operated to be mounted on the traveling frame 48 and the left and right crawlers 4 are mounted.
7 is driven to move from the position shown in FIG. 1 to the position shown in FIG. The main soil and sand transport vehicle 7 can rotate the turning base 14 left and right by 180 ° in order to avoid a change in the earth discharging direction due to turning of the vehicle body due to a rotation difference between the right and left crawlers 47. The gear 5 is provided on the outer periphery of the rotation mechanism 49 of the traveling frame 48.
0 is engaged with a group of a plurality of reduction gears 51 meshing with the gear, and a motor 52 fixed to the turning base 14 is driven to rotate the turning base 14 in the direction shown in FIG. 2 (the direction opposite to FIG. 1). The bucket 20 is rotated and the motor 3
9 and the hydraulic jack 29 are driven to lower the arm 23 and rotate the bucket 20 to discharge the soil at a required position.

By selecting the rotation angle of the revolving base 14, it is possible to scoop up and discharge the earth and sand 6 in a portion exceeding the width of the bucket 20. When the width needs to be further increased, the traveling direction of the mainland sand transport vehicle 7 can be slightly changed by utilizing the rotation difference between the left and right of the crawler 47, and the kneading of the ground 3 by the crawler 47 can be minimized. . As described above, the operations of the respective parts are executed, so that the hydraulic jack 19, the signal of the self-position recognition, height, weight and other necessary sensors (not shown) or central control and the like and the judgment by the computer are used.
29, the driving of the motors 39, 43, 52, and the hydraulic motor 46 is controlled, and the loading, transporting, turning conversion, and discharging of the earth and sand are completed by the combination of the respective components.
Horizontal transfer can be performed with minimal disturbance.

FIGS. 8 to 10 show a second embodiment of the present invention. A bucket 53 is rotatably supported on a rotating shaft 55 around which a sprocket 54 is mounted. A pair of left and right arms 56 supporting the rotating shaft 55 is shown. Are fixed to each other by a horizontal connecting member 57 to form an integrated structure. At the center of rotation of the arm 56, a pipe-shaped shaft 58 is fixed to the arm 56, and is slidably mounted on a shaft 59 rotatably attached to the tip of a revolving frame 60 via a bearing or the like (not shown). And is fitted with high precision. A flat gear 61 is fixed to the other end of the pipe-shaped shaft 58, and a flat gear 62 meshing with the flat gear 61 is
A shaft 64 rotatably mounted on the shaft 0 via a bearing 63
It is fixed to. The other end of the hydraulic jack 66 whose end is pin-joined to an arm 65 fixed to the shaft 64 is pin-joined to a bearing 67 fixed to the turning frame 60.
The arm 56 is rotated via the spur gears 62 and 61 by the expansion and contraction of the hydraulic jack 66 so that the arm can be rotated to the position 56 '.

Next, a sprocket 6 is provided at both ends of the shaft 59.
8 is fixed, and a gear 69 is fixed in the middle, and a gear 70 meshing with the gear 69 is fixed to a pipe-shaped shaft 71 fitted with a bearing or the like (not shown) precisely so as to be slidable and rotatable on the shaft 64. . The other end of the hydraulic jack 73 in which one end is pin-joined to the tip of an arm 72 fixed to a pipe-shaped shaft 71,
It is pin-joined to a bearing 74 fixed to the revolving frame 60. The gears 70 and 69 are formed by the expansion and contraction of the hydraulic jack 73.
The rotational force is transmitted to the rotary shaft 55 via the chain 75 bridged between the sprockets 68 and 54 via the sprockets 68, and the bucket 53 rotates to be in the state of 53 ', 53 ".

By making the diameters of the sprockets 68 and 55 the same, the rotation angle of the sprocket 68 is always transmitted to the sprocket 54 irrespective of the rotation angle of the arm 56. Condition is 53
The scooped earth and sand is stable. Since the length and the angle of rotation of the arm 56 are larger than those in the above-described embodiment, the center of gravity can be moved near the center of the crawler 47 by setting the bucket at the position 53 ′ ″.

The rotation of the revolving frame 60 and the driving of the crawler 47 are the same as those of the above-described embodiment. In the figure, the same reference numerals are given to the same parts as those in the above embodiment.

[0024]

As described above, the earth and sand carrier according to the present invention has a swivel base mounted on a traveling frame on which a crawler is mounted so as to be rotatable by 180 ° left and right around a central vertical axis of the frame. A swing base that is slidable in the longitudinal direction of the base is mounted on the swing base, and a transfer bucket that also serves as a shovel is horizontally mounted on an end of an arm that is pivotally supported on the slide base so as to be vertically rotatable. By rotatably pivoting around, the rotation conversion by the crawler is omitted for earth removal, so kneading of the ground is eliminated, and the crawler load can be equalized and scooping up The amount of sediment is increased. Furthermore, the structure is simplified and the size is reduced, so that the weight is reduced and the ground pressure can be reduced.

As described above, according to the present invention, it is possible to make the mobile earth-moving machine applicable to underground construction work, minimize the disturbance of the ground, increase the earth removal amount to be carried at one time, , The workability is improved, and the accuracy can be improved by simplifying the work.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an implementation state of an underground earth removal method in a reverse driving method using an earth and sand transport vehicle according to the present invention.

FIG. 2 is a longitudinal sectional view showing a step subsequent to FIG. 1;

FIG. 3 is a side view showing the state of loading and discharging earth and sand in the first embodiment of the earth and sand transport vehicle according to the present invention.

FIG. 4 is a side view showing the next step of FIG.

FIG. 5 is a side view showing a state at the time of earth and sand transport in the next step of FIG. 4;

FIG. 6 is a view taken along the arrow in FIG. 3;

FIG. 7 is a roll view of FIG. 3;

FIG. 8 is a side view showing a state of loading and unloading earth and sand in a second embodiment of the earth and sand transport vehicle according to the present invention.

9 is a view taken in the direction of arrows in FIG.

FIG. 10 is a view as viewed in the direction of arrows in FIG. 8;

[Explanation of symbols]

 14 Revolving base 20 Bucket 21 Sprocket 22 Rotating shaft 23 Arm 26 Slide base 27 Bearing member 28 Arm 29 Hydraulic jack 30 Bearing 31 Sprocket 32 Sprocket 33 Shaft 35 Sprocket 40 Chain 41 Chain 42 Roller 47 Crawler 48 Running frame

Claims (1)

(57) [Claims] 1. On a traveling frame equipped with a crawler,
A sliding base is slidably mounted in the longitudinal direction of the base on a revolving base mounted to be rotatable 180 ° to the left and right around the center vertical axis of the frame, and vertically rotated on the sliding base. An earth and sand transport vehicle, wherein a transport bucket also serving as a shovel is pivotally supported on a freely pivotable arm end around a horizontal axis.