JPS62153008A - Discharging method for substance to be conveyed possible to change inclined angle at position in certain height in belt conveyor for three-dimensional transport - Google Patents

Abstract

PURPOSE:To improve working efficiency by providing flexible areas in the vicinity of both ends of a couple of belt conveyors and so constituting the inclined angle between both areas as to be optionably changeable, in the working method stated in the headline for a conveyor discharging excavated soil or the like. CONSTITUTION:Flexible areas 4, 5 are provided in the vicinity of both ends of a conveyor three-dimensionally transporting substance to be conveyed, by catching it with its main and following conveyors 1, 2 and the tip of a horizontal area 8 is elevated by a winch 10 and a lanyard-like wire 9 for drawing up. Hereby belt conveyors 1, 2 change the angles of bend at their flexible areas 4, 5 and the inclined angle theta at a position 6 between both flexible areas 4, 5 is changed and the height of a horizontal area 8 is optionally selected. By this constitution, the working efficiency can be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is for discharging earth and sand excavated by grounding underground zero-ft storage tanks, excavating tunnels, excavation work, etc. In the case of transporting raw materials for plants or during ground improvement work, transportation of earth and sand to transport soil improvement materials to high supply ports when long piles are being cast, as well as grain, coal, etc. from cargo ships. This relates to a conveyed material discharge method in which the inclination angle of the height part of a belt conveyor for three-dimensional conveyance using a helt conveyor used for unloading iron ore etc. can be changed.
For example, in the field of underground stockpiling of crude oil, grain, etc., when excavating the ground and installing underground tanks, depending on the depth of the ground excavation, a vertical conveyor belt conveyor is lowered close to the excavation surface, and a belt conveyor is placed horizontally at the bottom of the belt. The object is to improve the efficiency of work by moving from the part through the three-dimensional part to the upper horizontal part.

[Conventional technology]

Conventionally, the method of vertically lifting and transporting sediment is as follows:
It is known that a pair of conveyor belts are placed vertically facing each other, the material is sandwiched therebetween while applying external pressure, and the material is fed in the order of horizontal-vertical-horizontal multiple times to a desired location. -22657, 53-1618
2, invention described in Publication No. 53-22353).

[Problem that the invention seeks to solve]

However, in conventionally known conveyors, the vertical conveyor and the upper and lower horizontal conveyors are fixedly integrated, and the entire heald conveyor can be tilted at any angle from the vertical to suit the excavation depth. There was no equipment that could be used to make changes and work.

Therefore, with the conventional method, whenever the excavation depth changes to a certain extent between the maximum depth of 40 and 50 m, there is an inconvenience that the work must be stopped and preparations for the construction work added, adding heald conveyors accordingly. .

[Means to try to solve problems]

Therefore, in order to solve the above-mentioned conventional problems and achieve the object of the invention, the present invention provides a method for discharging a conveyed object in which the inclination angle of the height portion of a heald conveyor for three-dimensional conveyance can be changed. Flexible parts are provided near both ends of a pair of Helt Conveyor with the parts to be held facing each other, and the side bendable parts are installed so that the inclination angle can be changed to any desired angle between vertical and horizontal. .

[For production] The operations or steps based on the above means are as follows.

First of all, although it depends on the purpose of the work, in the case of soil discharge work for underground tank installation work, when the excavation depth is shallow, the angle of inclination of the heald conveyor is extremely gentle, and it extends in a straight line and nearly horizontal over the entire length. There is. As the excavation progresses and becomes deeper, the angle between the upper and lower bendable parts of the belt conveyor becomes steeper, and near the deepest part underground, the belt conveyor between the upper and lower bendable parts becomes vertical.

Therefore, at each predetermined excavation depth state, when excavated soil, clay, cobblestones, or a mixture of these is supplied to the lower horizontal heald conveyor section, it is horizontally transferred to the lower bendable section, and then A pair of facing conveyor belts are driven at the same speed and in the same direction to hold the conveyed object on the heald conveyor between the bendable parts, and at the same time, while pressing both edges of the long side of the conveyor belt in the facing direction, raise.

When it reaches the upper end, it is conveyed to the outside on the ground through a horizontal belt conveyor.

〔Example〕

An example of implementing the method of the present invention will be described below with reference to the drawings. In Fig. 1, ``■'' is a heald conveyor consisting of an endless flat belt made of hard flexible rubber or synthetic resin material 4, and the conveyor belts 2 and 3 of the two main and subordinate conveyor belts are mutually connected to each other at the parts where the objects to be conveyed are held. Flexible portions 4 and 5 are provided near both ends of the conveyor belt, with both edges along the length of each conveyor belt at the facing portions in contact with each other, and with the clamping portions of conveyed objects facing each other. .

The distance 6 between the bendable portions 4 and 5 of the heat conveyor can be set to any inclination angle θ between vertical and horizontal.

7 and 8 are the upper and lower horizontal parts of the heald conveyor, 9 is a traction element when changing the inclination angle θ of the vertical part from the bendable parts 4 and 5 of the heald conveyor, and F is a traction element used when changing the angle of the heald conveyor l. K-Song follows suit.

The above-mentioned tensioning or relaxing operation of the traction element is performed by installing an automatic hoisting machine 10 or a hydraulic machine.

When the heald conveyor 1 descends to the set deepest point, the upper and lower ends 21 of the main belt conveyor 2
2 □ is continuously extended in the horizontal direction to form a horizontal heel conveyor section 7.
・8 is provided, and the whole is formed into approximately Z shape or S shape.

Then, the lower end portion 3□ of the secondary conveyor belt 3 is positioned on the lower horizontal belt conveyor mounting surface of the main conveyor belt 2, and the upper end portion 3. the upper end portion of the main conveyor belt 2. It is provided so as to protrude further upward and inward.

11 and 12 are drive sources such as motors for driving the two master and slave conveyor flat healds 2 and 3 at the same speed and in the same direction, and 13 and 14 are the master and slave conveyor flat healds 2 and 3.
A plurality of pressure rollers are integrally arranged in vertical rows for pressing from the outer surface along both side edges of the material to make them come into close contact with each other.

The conveyor belt shown in Figure 2 is designed to minimize the amount of material that expands and deforms due to its volume when the conveyor belt is vertically conveying soil on an inclined surface. Axial roller 13.・13□ and 14.・14□ shows a structure that has been joined together by crossing the horizontal axis. Roller 13 in this case. -13□ and 14.・14□
The diameter of the roller is set to be larger than the diameter of the roller shown in FIG.

Further, the third illustration shows a shock absorber 1G made of a hollow rubber body or a solid elastic rubber block, etc., provided on the horizontal axis of FIG. 2.

In FIGS. 2 and 3, reference numeral 17 denotes a pressing roller 131 that presses both edges along the longitudinal direction of the conveyed object A when it is transferred by the two main and subordinate conveyor belts 2 and 3 constituting the three-dimensional conveyor l.・It is a pressure adjustment mechanism for making face-to-face contact via 13□, 14, ・14□, and a floating shaft 15s that engages a spring or other tensioning tool in the elongated hole 1B, and a support shaft 20 that is coupled to the bearing hole 19. The conveyor belt is hooked to the conveyor belt and pulled, and when the conveyor belt picks up the conveyed object, a pinching action is applied in the direction facing the conveyor belt.

The master and slave heald rollers 13. - 132 is attached to the casing F side.

(Effects of the Invention) Since the present invention has the above-mentioned configuration, at a place excavated from the alley surface or at a certain depth, the conveyor heald conveyor is lowered by the method of the present invention to a certain digging depth. Then, by changing the descending angle of the belt conveyor, it is possible to always discharge the conveyed materials such as earth, sand, and rocks to the ground via the heald conveyor at a position corresponding to the excavation depth.

For example, in the field of underground stockpiling of crude oil, grain, etc., when excavating the ground and installing underground tanks, depending on the depth of the ground excavation, the three-dimensional conveyor belt conveyor is lowered close to the excavation surface, and the lower part of the heald conveyor is The work can be made more efficient by moving from the horizontal part through the vertical or inclined part to the upper horizontal part.

Therefore, according to the method of the present invention, the work can be carried out while changing the descending and inclination angles as appropriate using the belt conveyor device, so the excavated soil can be moved very efficiently to the ground or other purpose without interrupting the work. It can be discharged to a location continuously and without interruption.

As a result, the object to be held rises continuously without interruption, and when it reaches the top of the three-dimensional structure, it is transported horizontally again in conjunction with the horizontal belt conveyor, and can be automatically transported to the desired location. Therefore, for example, it is ideal for underground tank installation work that progresses from shallow to deep excavation while gradually changing the inclination angle of the heald conveyor. Loading, transporting cement, sand, and gravel to the high material input ports of large mixing equipment in the production of ready-mixed concrete, or when press-fitting soil improvement materials into piles during ground improvement work. It is also suitable for transporting soil improvement materials to supply locations.

Note that even if the conveyor belt that presses and holds the conveyed object bulges outward, the pair of conveyor belts that make up the three-dimensional conveyor will not face each other at the vertical position between the left and right rollers, as shown in Figures 2 and 3. By providing an intervening member that restricts the outward expansion of the clamping heald, unnecessarily bulging is restricted, thereby preventing a decrease in the clamping force of the facing pressing belt due to repeated conveyance.

Furthermore, since the pressure on both sides of the facing conveyor belts can be adjusted using integrated rollers, the clamping force of the conveyor belt, which expands and contracts due to conveyed objects of various sizes and sizes, can be properly maintained. The part is pulled with a strong force by the pressing mechanisms on both sides of the part so that it can be stretched freely, so when transporting solid lumps such as rocks and cobbles, for example,
As the master and slave conveyor belts move, the free-side rollers supported by the pressing mechanism move backwards, and the center portions of the facing belts bulge outward and deform, and both edges of the belts are also affected by the traction force of the pressing mechanism. It can act to help compensate for the inflated portion by slightly expanding against the pressure.

[Brief explanation of drawings]

Figure 1 is a schematic side view of equipment for carrying out the method of the present invention installed at an excavation work site, Figure 2 is an enlarged sectional view taken along line 2-2 in Figure 1, and Figure 3 is the same as in Figure 2. It is a sectional view of another modification. 1... Endless flat belt conveyor. 2... Main conveyor belt. 3...Sub conveyor belt. 4...Lower bendable part. 5... Upper bendable part. 7...Lower horizontal conveyor part. 8... Upper horizontal conveyor part. 9... Elementary body for traction. 10... Rolling machine. 11・12... Drive motor. 13・14・・・Roller integrated. 16...Inclusion.

Claims (1)

[Claims] Flexible parts are provided near both ends of a pair of belt conveyors with the parts to be conveyed facing each other, so that the angle of inclination between the two flexible parts can be changed to any desired angle between vertical and horizontal. A method for discharging conveyed objects in which the inclination angle of the height portion of a three-dimensional conveyor belt conveyor can be changed.