JPH08326096A - Earth and sand feeder car - Google Patents

Abstract

PURPOSE: To enhance work efficiency by laying out a second conveyer in a space surrounded by a lower part traveling device on both sides of excavation equipment and the lower part of a slewing body counter and connecting the second conveyer to a main body. CONSTITUTION: An earth and sand feeder car 1 is laid out behind a back hoe 71 in such a state that a second conveyer 40 is inserted in a space enveloped with a substructure traveling device 72 on both sides of the back hoe 71 and a slewing body counter while a dump truck 74 is positioned on the opposite side of the back hoe 71 with a main body 1a sandwiched so that a first conveyer 20 may be placed on the upper part of a load-carrying platform 74a of the dump truck 74. Then, excavated earth and sand are discharged into a second hopper 53 and conveyed by the second conveyer 40 and discharged into a first hopper 10. Then, the earth and sand are moved to the first conveyer 20 by the feeder 30 and discharged in the load carrying truck 74a. The back hoe 71 and the earth and sand feeder car 1 are moved in the advancing direction of excavation of a ditch and forced to discharge excavated earth and sand continuously, thereby eliminating the need for slewing a bucket 73 of the back hoe 71 and enabling work efficiency to be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a earth and sand feeder vehicle suitable for use in an operation for carrying out earth and sand after excavating the ground to form a groove in gas pipe construction and the like.

[0002]

2. Description of the Related Art For example, in burying a gas pipe, a surface layer of a paved passage is generally shaved off, and then a groove having a predetermined width and a predetermined depth is formed using an excavating machine such as a backhoe (for example, a diameter of 500 mm, If the gas pipe for medium pressure has a length of 12 m, a groove with a width of about 1.2 m and a depth of about 2.5 m is formed).
In this excavation, in order to prevent the side wall of the groove to be formed from collapsing, it is necessary to drive a sheet pile or 1 m.
When the sheet pile is driven after excavating a certain depth, the sheet pile may be driven after the groove has been completely excavated. Then, the earth and sand excavated by the backhoe is mounted on a dump truck waiting on the side of the groove and carried out.

However, in the above-mentioned conventional gas pipe burial work, if the dump truck is on the side of the groove, when the backhoe is used to load the back and forth with sand and sand, the bucket of the back hoe is swung. Had to be moved to, and as a result, this bucket would also stick out of the work zone. Therefore, the present applicants have previously proposed a earth and sand feeder vehicle capable of efficiently performing work in a work zone.

As shown in FIG. 12, the earth and sand feeder car a has a hopper d for receiving earth and sand, and a feeder e for transferring the earth and sand in the hopper d, to a vehicle body c having a crawler b.
And a conveyor f for discharging the earth and sand transferred by the feeder e are provided in a line in the running direction of the vehicle body c at the widthwise center of the vehicle body c. When the earth and sand feeder vehicle a is applied to, for example, a gas pipe burial work, the hopper d is located on the backhoe g side for excavating a groove, and the conveyor f is located above the loading platform of the dump truck h. First, the earth and sand excavated by is first put into the hopper d and temporarily stored, and the earth and sand in the hopper d is transferred to the conveyor f by the feeder e.
The conveyor f transfers the earth and sand, discharges the earth and sand from the end thereof, and puts the earth and sand into the loading platform of the dump truck h.

As a result, when the earth and sand are put into the loading platform of the dump truck h, it is not necessary to rotate the bucket of the backhoe g, and efficient work can be performed in the work zone. When dumping earth and sand, the dump truck h is stopped at a fixed position to prevent the wheels from falling into the groove.

[0006]

However, in the earth and sand feeder vehicle a, the backhoe g is separated from the dump truck h as the excavation of the groove by the backhoe g progresses. Therefore, when the distance between the backhoe g and the dump truck h becomes large, the earth and sand feeder vehicle a moves away from the backhoe g to put the earth and sand put into the hopper d into the dump truck h, and accordingly, the backhoe g during this time. Has to stop the excavation work, which is a factor that hinders the effective use of the excavation machine.

The present invention is capable of solving the above-mentioned inconveniences, and it is an object of the present invention not only to perform the work efficiently in the work zone but also to effectively utilize the excavating machine. The purpose is to provide a sediment feeder car that can

[0008]

In order to achieve the above object, a sediment feeder vehicle according to a first aspect of the present invention provides a lower traveling body having traveling means, a first hopper for receiving sediment, and a first hopper for receiving the sediment. It can be inserted into the space surrounded by the feeder that transfers the earth and sand and the first conveyor that discharges the earth and sand transferred by this feeder, the lower traveling devices on the left and right of the excavating machine, and under the revolving structure platform. A second conveyor that is connected to the main body portion, has a second hopper on the starting end side for receiving the earth and sand excavated by the excavating machine, and inputs the excavated earth and sand in the second hopper to the first hopper. It is characterized by that.

A sediment feeder vehicle according to a second aspect of the present invention is characterized in that the first conveyor is provided so as to be rotatable in the width direction of the lower traveling body with the starting end side as a fulcrum. In the earth and sand feeder vehicle according to claim 3, the second conveyor, the first hopper, the feeder, and the first conveyor are arranged in a line in the running direction of the lower traveling body at the center in the width direction of the lower traveling body. It is characterized by that.

According to a fourth aspect of the earth and sand feeder vehicle, a drive source is provided on one side in the width direction of the feeder, and a driver's seat is provided on the other side.

[0011]

According to the first aspect of the present invention, for example, when applied to the burying work of the pipe body, the earth and sand feeder car is provided with the second conveyor at the rear of the excavator and the lower traveling devices on the left and right sides of the excavator and under the revolving structure platform. It is arranged in a state surrounded by a space, and a carrying machine such as a dump truck is located on the opposite side of the excavator with the earth and sand feeder car sandwiched therebetween, and the first conveyor is located above the bed of the carrying machine. Deploy.

Then, the earth and sand excavated by the excavator are
First, it is loaded into the second hopper and temporarily stored, then conveyed by the second conveyor and loaded into the first hopper from the end thereof. Then, the earth and sand put into the first hopper are stored in the first hopper, transferred to the first conveyor by the feeder, and put into the loading platform of the transport machine from the end of the first conveyor. As the excavation of the ditch progresses, the excavator, the earth and sand feeder vehicle, and the transportation machine are moved in the advancing direction of the excavation of the ditch to continuously perform the sediment discharge work.

According to a second aspect of the invention, in addition to the first aspect of the invention, the first conveyor is provided so as to be rotatable in the width direction of the lower traveling body, so that, for example, a dump truck or the like is transported to the side of the earth and sand feeder vehicle. When the machine is positioned and the work is performed, the first conveyor is swung to be slanted with respect to the traveling direction of the earth and sand feeder vehicle to discharge the earth and sand. In the invention of claim 3, in addition to the invention of claim 1 or 2, the second conveyor, the first hopper, the feeder and the first conveyor are arranged in a line in the widthwise center of the lower traveling body in the traveling direction of the lower traveling body. By arranging them side by side, the second sand, the first hopper, the feeder, and the earth and sand that have passed through the first conveyor after being put into the second hopper from the excavator are transferred along the traveling direction of the lower traveling body.

According to a fourth aspect of the present invention, in addition to the invention according to any one of the first to third aspects, a drive source is provided on one side in the width direction of the feeder and a driver's seat is provided on the other side. As a result, the earth and sand feeder vehicle as a whole can be made compact and the visibility from the driver's cab can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a schematic side view of a soil and sand feeder vehicle which is an embodiment of the present invention, FIG. 2 is an explanatory side view for explaining a main body portion, FIG. 3 is a plan view of FIG. 2, and FIG.
FIG. 5 is a detailed view of the feeder, FIG. 6 is an explanatory side view in which a part of the second conveyor is cut away, FIG. 7 is a view seen from the arrow direction of FIG. 6, and FIG. 8 is a backhoe of the second conveyor. 9 is a view for explaining a state of being inserted between the crawlers, FIG. 9 is a view seen from an arrow direction of FIG. 6, FIG. 10 is a schematic diagram for explaining a drive system of the earth and sand feeder vehicle, and FIG. 11 is an earth and sand feeder. It is an explanatory side view for explaining how to use a car.

Referring to these drawings, the earth and sand feeder vehicle 1 includes a main body 1a and a second conveyor 40. The main body portion 1a is provided with a vehicle body 2 as a lower traveling body. The vehicle body 2 is provided with a pair of left and right crawlers 3 as traveling means in this example, and each crawler 3 is driven by an engine E mounted on the vehicle body 2. An endless motion is performed in accordance with the rotation of the traveling motor 3a to be driven, and its operation is performed by a driver's cab 2a provided on the upper portion of the vehicle body 2. Instead of the crawler 3, for example, a tire may be applied as the traveling means.

The vehicle body 2 is provided with a hopper 10 at the rear portion, a first conveyor 20 at the front portion, and a feeder 30 provided from the first hopper 10 to the starting end of the first conveyor 20. As shown in FIGS. 3 and 4, the first hopper 10 is provided with hopper wings 11 on both sides in the width direction of the vehicle body 2, and the start end side of the feeder 30 is located between these hopper wings 11. More specifically, the inner end of the hopper wing 11 is pivotally attached to the left and right sides of the feeder 30 by hinges (not shown), and this pivotal attachment allows the hopper wing 11 to swing upward toward the center of the vehicle body 2 in the width direction. The rising plate 12 is fixed to the front portion by welding or the like. Brackets (not shown) are provided on the outer surfaces of the left and right hopper wings 11, and a hopper wing opening / closing cylinder 13 (right 13r and left 13l) interlocks between these brackets and the lower portion of the vehicle body 2. Figure 10
(Refer to FIG. 3), and by moving the hopper wing opening / closing cylinder 13 back and forth, both the left and right hopper wings 11 are opened and closed around the hinge.

As shown in FIGS. 2 and 3, the first conveyor 20 has a turning post 21 whose starting end is mounted on the vehicle body 2.
The slewing post 21 is rotatably attached to the slewing post 21. In this first conveyor 20, two sets of guides 20a and 20b are continuously provided in the longitudinal direction on the starting end side (mounting end side) and the terminating end side (free end side), and one endless belt is provided on these guides 20a and 20b. It is provided. Conveyor 23 on the starting side
The swivel post 21 is connected to the swivel post 21 by a lift cylinder 24, and the first conveyor 20 is vertically movable by moving the lift cylinder 24 forward and backward. On the other hand, the conveyor 25 on the terminal side and the conveyor 23 on the starting side are connected by a folding cylinder 26, and when the folding cylinder 26 advances and retracts, the conveyor 25 on the terminal side is moved in a state where the back surfaces of the conveyors 23 and 25 are in contact with each other. It is adapted to be folded under the conveyor 23 on the starting end side. Further, in this first conveyor 20, the roller of the conveyor 25 on the terminal side is used as a drive roller, and this roller is driven by rotation of a hydraulic motor 27 driven by the engine E.

As shown in FIG. 3, the feeder 30 has its starting end located in the widthwise center of the vehicle body 2 between the left and right hopper wings 11, and its ending end facing the starting end of the first conveyor 20. Therefore, it is designed to rise from the starting end side toward the terminating end side. Further, the above-described engine E is provided on one side in the width direction of the feeder 30, and the cab 2a is provided on the other side. As a result, the earth and sand feeder vehicle as a whole is made compact, the visibility from the driver's cab 2a is improved, and it is possible to perform the earth and sand discharging work while visually observing.

FIG. 5 shows the details of the feeder 30, FIG. 5 (a) is a partial plan view, and FIG. 5 (b) is a side view.
Referring to this figure, the guide plate 33 made of a plate is provided with shafts 34, 3 along both front and rear edges of the vehicle body 2.
5 are pivotally supported, and sprockets 36 are fixed to both ends of these shafts 34 and 35, respectively, and guide plates 33
An endless chain 37 is stretched over each sprocket 36 on both the left and right sides, and a plurality of bars 38 for transferring earth and sand on the guide plate 33 are provided between the left and right endless chains 37. A hydraulic motor 39 driven by the engine E is connected to the end-side shaft 34 of the shafts 34, 35, and the drive of the hydraulic motor 39 causes the shaft 34 to rotate and the endless chain 37 to perform endless motion. The shaft 35 is rotated while being rotated. Such a feeder 30 is integrally formed with the hopper 10 by fixing a support plate (not shown) fixedly provided on the side thereof to the inside of the hopper 10.

As shown in FIGS. 1 and 3, the second conveyor 40 has the first hopper 10, the first conveyor 20, the feeder 30, and the vehicle body 2 on the rear side (the first hopper 10 side) of the vehicle body 2.
Are arranged in a line in the running direction, the starting end side is a horizontal portion 41, and the ending end side is an inclined portion 42 that rises toward the first hopper 10 side. As shown in FIGS. 8 and 9, side plates 43a and 43b are provided on both sides of the horizontal portion 41 and the inclined portion 42 along the transport direction, and one endless belt 44 is provided between the side plates 43a and 43b. ing. As shown in FIG. 8, a carrier roller 50 and a return roller 51 are respectively arranged on the upper and lower belt back surfaces of the endless belt 44, and both ends of these rollers 50, 51 are pivotally supported by the side plates 43a, 43b. Has been done. Further, wheels 52 are attached to both side plates 43a and 43b of the horizontal portion 41 at equal intervals in the transport direction to enable the second conveyor 40 to travel.

In the second conveyor 40, as shown in FIG. 6, of the rollers 45a on the horizontal portion 41 side and the rollers 45b on the inclined portion 42 side on which the endless belt 44 is stretched, the roller 45b on the inclined portion 42 side is driven. It is said to be Laura. The second conveyor 40 is driven by transmitting the rotation of the hydraulic motor 46 driven by the engine E to the roller 45b via a chain mechanism 47. In FIG. 6, reference numeral 48 is a hydraulic pipe extending from the engine E along the side of the first hopper 10 to supply hydraulic oil to the hydraulic motor 46. The hydraulic pipe 48 is the second
The conveyor 40 side and the first hopper 10 side are detachably connected via a quick coupling 49.

The second conveyor 40 also has a second hopper 53 provided above the tip of the horizontal portion 41. The second hopper 53 is loaded with earth and sand excavated by a back hoe which will be described later, and the earth and sand put into the second hopper 53 is temporarily stored in the second hopper 53 while being stored in the second conveyor 40. The second conveyor 4 is conveyed toward the first hopper 10 via the horizontal portion 41 and the inclined portion 42.
It is thrown into the first hopper 10 from the end of 0. In FIG. 8, reference numeral 54 is a guide plate that is attached to the bracket 55 above the side plates 43 and 43b and that guides the earth and sand conveyed by the second conveyor 40. Also, reference numeral 56
Attaches the horizontal portion 41 of the second conveyor 40 to the backhoe 71.
(See FIG. 11) Left and right crawlers (lower traveling device) 72
This is a positioning member for making the center position of the second conveyor 40 in the width direction substantially coincide with the center position of the backhoe 71 in the width direction when the second conveyor 40 is inserted into a space surrounded by the underside of the revolving structure base. The positioning member 56 includes the side plate 43 of the horizontal portion 41.
The bracket 55 attached to the upper part of the a, 43b is extended so as to spread upward, and the distance between the tip ends thereof is slightly shorter than the width between the crawlers 72 of the backhoe 71, so that the body frame 71a of the backhoe 71 is secured. Face to face.

As shown in FIGS. 3 and 6, the second conveyor 40 having such a structure has both side plates 43a, 43 of the inclined portion 42.
It is connected to the rear part of the vehicle body 2 by a connecting arm 57 attached to b. One end of the connecting arm 57 is fixed to the side plates 43a and 43b of the inclined portion 42 by bolts or the like, and the other end of the connecting arm 57 extends toward the lower rear portion of the vehicle body 2 and a hook-like connecting portion 58 is provided at the tip thereof. Has been formed. The second conveyor 40 is connected to the vehicle body 2 by hooking the connecting portion 58 on the connecting bar 59 provided on the lower rear side of the vehicle body 2. In the connected state, as shown in FIG. 6, a retaining piece 59a is bridged over the opening of the connecting portion 58 to prevent the connecting portion 58 from being unintentionally disengaged due to vibration during traveling.

Further, the horizontal portion 41 of the second conveyor 40 is
As shown in FIG. 11, the backhoe 71 is inserted into the space surrounded by the crawlers 72 on the left and right sides of the backhoe 71 and under the revolving structure platform. At the time of insertion, the second hopper 53 arranged at the tip of the horizontal portion 41 projects forward from the crawler 72. The earth and sand excavated by the bucket 73 of the backhoe 71 is thrown in through the upper opening of the second hopper 53. Since the center position in the width direction of the backhoe 71 and the center position in the width direction of the bucket 73 of the backhoe 71 are generally slightly eccentric, in the present embodiment, as shown in FIG. The center line in the width direction of is aligned with the center line of the bucket 73 and is slightly eccentric.

Here, each of the constituent parts of the earth and sand feeder vehicle 1 described above is designed to operate in a predetermined manner by the hydraulic pressure from the power distributor directly connected to the engine E. FIG. 10 shows a schematic diagram of the drive system. The power distributor D directly connected to the engine E includes a hydraulic pump 61 for driving the traveling motor 3a of the crawler 3 of the earth and sand feeder vehicle 1 and the second conveyor 40. A hydraulic pump 62 for driving the first conveyor 20 and the feeder 30 and a hydraulic pump 63 for advancing and retracting each cylinder of the first hopper 10 and the first conveyor 20 are connected in parallel.

Two traveling control valves 64 are provided between the driving hydraulic pump 61 and the crawler 3 so as to correspond to the left and right sides of the crawler 3, and the forward movement of the crawler 3 depending on the opening of the traveling control valve 64. The vehicle is moved backward and stopped, and the course is changed depending on the difference between the left and right travel control valves 64. In addition, the driving hydraulic pump 62 and the second conveyor 4
0, the first conveyor 20 and the feeder 30, respectively, a second conveyor control valve 65a, a first conveyor control valve 65 and a feeder for individually driving the second conveyor 40, the first conveyor 20 and the feeder 30. Control valve 6
6 are provided so that the valves 65a, 65 and 66 rotate the hydraulic motor 46 of the second conveyor 40, the hydraulic motor 27 of the first conveyor 20 and the hydraulic motor 39 of the feeder 30 both in forward and reverse directions. Further, a cylinder control valve 67 is provided between the advancing / retreating hydraulic pump 63 and each of the cylinders. The cylinder control valve 67 is provided in the swing valve 67a corresponding to the swing cylinder 22 and in the lift cylinder 24. A corresponding lift valve 67b, a folding valve 67c corresponding to the folding cylinder 26, a right hopper wing valve 67d corresponding to the right hopper wing opening / closing cylinder 13r, and a left corresponding to the left hopper wing opening / closing cylinder 13l. It is composed of a hopper wing valve 67e. When each of the valves 67a to 67e is opened, the rod of the cylinder moves forward, and when closed, it moves backward.

The valves 64 to 67 are provided in the cab 2
It can be operated by an operation unit (not shown) provided in a. Next, the operation of the earth and sand feeder vehicle 1 having the above configuration will be described with reference to FIG. In this example,
The earth and sand feeder vehicle 1 will be applied to the work of excavating a groove for burying a gas pipe, and the description will proceed.

As shown in FIG. 11, first, a groove G for burying a gas pipe is formed in a predetermined width and a predetermined depth by using an excavating machine such as a backhoe. And this backhoe 71
The earth and sand feeder vehicle 1 is arranged in a state in which the horizontal portion 41 of the second conveyor 40 of the earth and sand feeder vehicle 1 is inserted into the space surrounded by the left and right crawlers 72 of the backhoe 51 and the revolving structure under the swivel base. This earth and sand feeder car 1
A transporting machine such as a dump truck 74 for loading earth and sand is located on the opposite side of the backhoe 71 with the space between them and the first conveyor 20 of the earth and sand feeder vehicle 1 is arranged above the loading platform 74a of the dump truck 74.

The earth and sand excavated by the bucket 73 of the back hoe 71 is first put into the second hopper 53 and temporarily stored therein, while being temporarily stored therein by the second conveyor 40.
It is conveyed toward 0 and is loaded into the first hopper 10 from its end. Next, the earth and sand put into the first hopper 10 is transferred to the first conveyor 20 by the feeder 30 while being temporarily stored in the first hopper 10, and from the end of the first conveyor 20 to the loading platform 74a of the dump truck 74. It is thrown in. Then, as the excavation of the groove G progresses, the backhoe 71, the earth and sand feeder vehicle 1, and the dump truck 7
4 is moved along the advancing direction of excavation of the groove G to continuously perform the earth and sand discharging work. When the earth and sand in the first hopper 10 is attached to the outer end side of the hopper wing 11, the hopper wing opening / closing cylinder 13 is moved forward to raise the hopper wing 11 toward the center of the vehicle body 2. As a result, the width between the left and right hopper wings 11 becomes narrower, so that the soil in the first hopper 10 is concentrated on the feeder 30.

When the dump truck 74 is positioned diagonally in front of the earth and sand feeder vehicle 1, for example,
The turning cylinder 22 can be moved back and forth to horizontally turn the first conveyor 20, so that the rear end of the first conveyor 20 faces the loading platform 74a of the dump truck 74. Also, the loading platform 7
When loading soil on a plurality of dump trucks 74 having different heights 4a, the first conveyor 20 is swung in the vertical direction by moving the lifting cylinder 24 forward and backward according to the height of the loading platform 74a. The height can be adjusted.

In the earth and sand feeder vehicle 1 having such a configuration, as the excavation of the groove G proceeds, the backhoe 71, the earth and sand feeder vehicle 1 and the dump truck 74 are moved in the advancing direction of the excavation of the groove G to continuously discharge the earth and sand. Since the work can be performed, it is not necessary to rotate the bucket 73 of the backhoe 71 when excavating the groove as in the conventional case. Therefore, the work can be efficiently performed in the working body.

The backhoe 71 and the earth and sand feeder car 1
Also, since the excavation work can be performed with the interval between the dump trucks 74 being kept constant, the backhoe 71 does not separate from the dump truck 74 as the excavation of the groove by the backhoe 71 proceeds as in the conventional case. Therefore, continuous excavation work can be performed without stopping the excavation work of the backhoe 71, and the backhoe 71 can be effectively used.

Further, the second is inserted into the space surrounded by the crawlers 72 on the left and right of the backhoe 71 and under the revolving structure platform.
Since the conveyor 40 is connected to the main body 1a of the earth and sand feeder vehicle 1 and can be operated from the main body 1a, the backhoe 71 can be used as it is as a standard vehicle without modification.

[0035]

As is apparent from the above description, in the invention of claim 1, as the excavation of the groove progresses, the excavator, the earth and sand feeder vehicle and the carrying machine are moved in the advancing direction of the excavation of the groove to continuously perform the operation. Since the earth and sand can be discharged, it is not necessary to rotate the bucket of the excavator when excavating the groove as in the conventional case. Therefore, the effect that the work can be efficiently performed in the working body is obtained.

Further, since the excavation work can be performed in a state in which the distance between the excavator, the earth and sand feeder car and the transport machine is kept constant, the excavator moves from the transport machine as the excavation of the groove by the excavator proceeds as in the conventional case. You will never leave.
For this reason, it is possible to perform continuous excavation work without stopping the excavation work of the excavator as in the conventional case, and it is possible to effectively use the excavator.

Further, since the second conveyor is connected to the main body of the earth and sand feeder vehicle and is inserted into the space surrounded by the lower traveling devices on the left and right of the excavator and under the revolving structure stand, the excavator is not modified. As a result, the standard car can be used as it is. In the invention of claim 2, claim 1
In addition to the invention of, for example, when carrying out work by positioning a carrying machine such as a dump truck on the side of the earth and sand feeder car,
Since the first conveyor can be swung and slanted with respect to the traveling direction of the earth and sand feeder car to discharge the earth and sand,
The effect that the range of the stop position of the transport machine can be widened is obtained.

According to the invention of claim 3, in addition to the invention of claim 1 or 2, the earth and sand passing through the second conveyor, the first hopper, the feeder and the first conveyor after being put into the second hopper from the excavator are Since it is transferred along the traveling direction of the lower traveling body, it is possible to obtain an effect that the sediment can be discharged more easily as the sediment feeder vehicle travels. According to the invention of claim 4, in addition to the invention according to any one of claims 1 to 3, the whole earth and sand feeder vehicle can be made compact, and the visibility from the cab is improved, Since the earth and sand discharging work can be performed visually, there is an effect that the work can be facilitated.

[Brief description of drawings]

FIG. 1 is a schematic side view of a earth and sand feeder vehicle that is an embodiment of the present invention.

FIG. 2 is an explanatory side view for explaining a main body section.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a cross-sectional view taken along the line − in FIG.

5A and 5B are diagrams showing details of the feeder, in which FIG. 5A is a partial plan view and FIG. 5B is a side view.

FIG. 6 is an explanatory side view in which a part of the second conveyor is cut away.

FIG. 7 is a view seen from the direction of the arrow in FIG.

FIG. 8 is an explanatory diagram for explaining a state in which the second conveyor is inserted between the crawlers of the backhoe.

9 is a diagram viewed from the direction of the arrow in FIG.

FIG. 10 is a schematic diagram for explaining a drive system of the earth and sand feeder vehicle.

FIG. 11 is an explanatory side view for explaining how to use the earth and sand feeder vehicle.

FIG. 12 is an explanatory side view for explaining a conventional earth and sand feeder vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sediment feeder car 1a ... Main body 2 ... Vehicle body (lower traveling body) 2a ... Driver's cab E ... Engine 3 ... Crawler (traveling means) 10 ... First hopper 20 ... First conveyor 30 ... Feeder 40 ... Second conveyor 53 … Second hopper 71… Backhoe (excavator) 72… Crawler (bottom traveling device)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuichi Toda 2626 Takayanagi, Kurihashi-cho, Kitakatsushika-gun, Saitama, Sakai Heavy Industry Co., Ltd.Technical Research Laboratory (72) Hiro Nakata 2626 Takayanagi, Kurihashi-cho, Kitakatsushika-gun, Saitama Prefecture Sakai Heavy Industries Co., Ltd. Inside the technical laboratory

Claims (4)

[Claims] 1. A lower traveling body having traveling means, a first hopper for receiving earth and sand, a feeder for transferring earth and sand in the first hopper, and a first conveyor for discharging earth and sand transferred by the feeder. A second hopper that is connected to the main body so that it can be inserted into a space surrounded by the main body that is provided, the lower traveling devices on the left and right of the excavating machine, and under the revolving structure platform and that receives the earth and sand excavated by the excavating machine. A earth and sand feeder vehicle, comprising a second conveyor which is provided at a starting end side and which puts the excavated earth and sand in the second hopper into the first hopper. 2. The earth and sand feeder vehicle according to claim 1, wherein the first conveyor is provided so as to be rotatable in the width direction of the lower traveling body with the starting end side as a fulcrum. 3. The second conveyor, the first hopper, the feeder, and the first conveyor are arranged in a line in the running direction of the lower traveling body at the center in the width direction of the lower traveling body. The earth and sand feeder vehicle according to claim 1 or 2. 4. The earth and sand feeder vehicle according to claim 1, wherein a drive source is provided on one side in the width direction of the feeder and a driver seat is provided on the other side. .