JPH08165009A - Self-traveling conveyer - Google Patents

Abstract

PURPOSE: To efficiently carry out sediment or the like upward in a steep slope by derrick hoistably pivotally supporting a conveyer boom to a conveyer supporting base provided on a running carriage, extending a conveyer belt between a head pulley and a tail pulley to form a belt conveyer, and forming a part of this conveyer boom into a double conveyer. CONSTITUTION: A conveyer boom 6 is pivotally supported to a conveyer supporting base 5 to be made derrick hoistable. Between a head pulley 28 and a tail pulley 29, a conveyer belt 17 is extended, and between a tail pulley 30 and a head pulley 33, a conveyer belt 18 is extended, to form a part of the conveyer boom 6 into a double conveyer 16. A running carriage 2 is moved to derrick-hoist the conveyer boom 6 fixed. A conveyed object of sediment or the like, conveyed by a conveyer 8, is interposed between conveying surfaces of the conveyer belts 17, 18, carried out upward through a part of the double conveyer 16 and supplied to an upper loading equipment 13 from a side of a head frame 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled conveyor for carrying earth and sand upwards during excavation work in underground power plants, underground crude oil storage facilities, subways, building foundations, quarries and the like.

[0002]

2. Description of the Related Art Generally, underground power plants, underground crude oil storage,
In excavating underground, foundations of buildings, quarries, etc., it is not suitable to use an ordinary belt conveyor when carrying out sediment upwards because the maximum carrying angle is about 18 degrees, so a large lifting height cannot be obtained. Is. Therefore, in such excavation work, earth and sand etc. are excavated by a construction machine such as a power shovel and horizontally conveyed to a predetermined unloading place by a conveyor,
In many cases, this is grabbed by a clamshell bucket, carried out upward, and loaded onto a dump truck by the loading facility above. However, carrying out by a clamshell bucket requires skill of an operator for operation, and the cycle time of work is long and inefficient.

A bucket elevator and a belt conveyor with fins are also used as other means for carrying out upwards, but earth and sand are trapped in the buckets and fins, and the soil around the conveyor is contaminated by the fall of earth and sand for maintenance management. It is troublesome. In recent years, double-belt conveyors that sandwich sand and sand with a pair of belts facing each other and carry out vertically or steeply upward have also been used.

This double-belt conveyor has a steep slope and a large lift, and can efficiently carry out earth and sand, etc., but since it is a fixed type, it can be installed during excavation work in which the carrying-out place moves. It was difficult to deal with the change of the position and the inclination quickly.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems in transporting earth and sand or the like upward during excavation work, and enables the earth and sand and the like to be efficiently conveyed upward with a steep slope. It is an object of the present invention to provide a self-propelled conveyor capable of rapidly changing the installation position and the inclination according to the movement of the carry-out place.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a conveyor boom is pivotably supported on a conveyor abutment provided on a traveling carriage, and a head frame having a head pulley is pivotally attached to a tip end of the conveyor boom. , A tail frame having a tail pulley is pivotally attached to the rear end of the conveyor abutment, and a conveyor belt is stretched between the head pulley and the tail pulley to form a belt conveyor. A self-propelled conveyor that is a double conveyor is configured to solve the above problems.

By providing a shade frame between the conveyor boom and the conveyor abutment, even if the inclination of the conveyor boom is changed, the earth and sand can be smoothly supplied to the double conveyor portion.

[0008]

In the excavation work, when carrying out the soil and the like upwards, the traveling carriage of the self-propelled conveyor is moved to a predetermined carry-out place, and the conveyor boom is undulated and fixed at an inclination so that a predetermined lift can be obtained. . The tail frame has the rear end lowered and landed. The earth and sand excavated by a construction machine such as a power shovel is transported to a discharge location by a transport conveyor and supplied to the tail frame side of a self-propelled conveyor. The supplied earth and sand is discharged upward through the double conveyor portion and is supplied from the head frame side to the upper loading facility.

When the carrying-out place is moved during excavation work,
The rear end of the tail frame is lifted, the conveyor boom is laid down, the traveling carriage of the self-propelled conveyor is moved to a new unloading place, and the conveyor boom is again erected and fixed at an inclination so that a predetermined lift can be obtained. When the inclination of the conveyor boom is changed, the shade frame is tilted so that the earth and sand are smoothly supplied to the double conveyor section.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a self-propelled conveyor which is an embodiment of the present invention, FIG. 2 is an enlarged view of the conveyor abutment and the base end of a conveyor boom of FIG. 1, and FIGS. It is a cross-sectional view of a double conveyor part. In this embodiment, the traveling carriage 2 of the self-propelled conveyor 1 is provided with a swivel base 3, and a conveyor abutment 5 is installed on the swivel base 3. A base end of a conveyor boom 6 is pivotally supported on the conveyor abutment 5, and the conveyor boom 6 can be hoisted by a hoisting cylinder 7. A head frame 14 having a head pulley 28 is pivotally mounted on the tip of the conveyor boom 6, and the head frame 14 is tiltable by a head cylinder 15.

A tail frame 9 having a tail pulley 29 is pivotally attached to the rear end (the left end in the figure) of the conveyor abutment 5, and the tail frame 9 has a tail cylinder 11.
It is possible to tilt with. A drive pulley 26 and a bend pulley 27 are installed at the front end of the conveyor abutment 5, and the bend pulley 3 and the bend pulley 3 are installed at the tip of the conveyor boom 6.
4, 35 are provided. A drive pulley 26 and bend pulleys 27, 34, 35 are wound around the head pulley 28 and the tail pulley 29, and the conveyor belt 17
Is stretched to form a belt conveyor 4. A skirt 12 is provided on the conveyor belt 17 of the tail frame 9.
Is installed.

Near the base end of the conveyor boom 6, an upper end 23 of a cap-shaped frame 22 having an arcuate lower side is pivotally mounted, and the other end of the cap-shaped frame 22 is located at the center of the conveyor abutment 5. It is attached to a guide frame 25 provided so as to be movable back and forth. The shade frame 22 is provided with a tail pulley 30 and a bend pulley 31. A bend pulley 32 and a head pulley 33 are supported on the tip of the conveyor boom 6. Tail pulley 30 and head pulley 3
3, the conveyor belt 18 is stretched around the bend pulleys 31, 32, and 34, and the conveyor boom 6
Is a double conveyor 16. Conveyor belts 17, 1 are provided at the bent portion near the entrance of the double conveyor 16.
In order to reduce the strain of No. 8, a curved portion is required over a length of about 4 times the belt width or more, so the length of the arc portion of the shade frame 22 is 4 times or more the belt width.

At the portion of the double conveyor 16, as shown in FIG. 3, conveyor belts 17, 18 facing each other are provided.
The transport surface of the sheet is pressed by the flex roller 20, and the conveyor belt 18 is driven by the conveyor belt 17 by its frictional force. In excavation work, when carrying out soil and the like upwards, the traveling carriage 2 of the self-propelled conveyor 1 is moved to a predetermined carry-out place, and the conveyor boom 6 is undulated and fixed at an inclination θ that can obtain a predetermined lift. To do. The tail frame 9 has its rear end lowered and landed. The earth and sand excavated by a construction machine such as a power shovel is carried to a carry-out place by the carrying conveyor 8 and supplied to the skirt 12 on the tail frame 9 of the self-propelled conveyor 1. Conveyed goods such as supplied earth and sand 19
As shown in FIG. 4, the sheet is sandwiched between the conveyor surfaces of the conveyor belts 17 and 18 and is conveyed upward through the double conveyor 16 to be supplied from the head frame 14 side to the upper loading facility 13. It

When the carry-out place is moved during excavation work,
Raise the rear end of the tail frame 9 to move the conveyor boom 6
Is laid down, the traveling carriage 2 of the self-propelled conveyor 1 is moved to a new unloading place, the conveyor boom 6 is raised again, and is fixed at an inclination θ at which a predetermined lift is obtained. When the inclination θ of the conveyor boom 6 changes, the shade frame 22 tilts and the conveyed product 19 is smoothly supplied to the double conveyor 16.

[0015]

As described above, in the self-propelled conveyor of the present invention, it is possible to continuously carry out a large amount of earth and sand or the like with a steep slope, and the work efficiency is improved. In addition, when it is necessary to move the carry-out place, the installation position and the inclination can be changed quickly.

[Brief description of drawings]

FIG. 1 is a side view of a self-propelled conveyor that is an embodiment of the present invention.

FIG. 2 is an enlarged view of a base end portion of a conveyor abutment and a conveyor boom.

FIG. 3 is a cross-sectional view of a double conveyor section.

FIG. 4 is a cross-sectional view of a double conveyor section.

[Explanation of symbols]

 1 Self-propelled conveyor 2 Traveling carriage 3 Revolving platform 4 Belt conveyor 5 Conveyor abutment 6 Conveyor boom 7 Lifting cylinder 9 Tail frame 14 Head frame 16 Double conveyor 17 Conveyor belt 18 Conveyor belt 19 Conveyed goods 22 Head frame 28 Head pulley 29 tail pulley

Claims (2)

[Claims] 1. A conveyor boom is pivotably supported on a conveyor abutment provided on a traveling carriage, and a head frame having a head pulley is pivotally attached to a tip end of the conveyor boom, and a rear end portion of the conveyor abutment. A tail frame having a tail pulley is pivotally attached to the head pulley and a conveyor belt is stretched between the head pulley and the tail pulley to form a belt conveyor,
A self-propelled conveyor in which the conveyor boom portion of the belt conveyor is a double conveyor. 2. The self-propelled conveyor according to claim 1, wherein a cap-shaped frame having an arcuate lower side is tiltably provided between the conveyor boom and the conveyor abutment.