JPS61286424A - Sediment conveyor - Google Patents

Abstract

PURPOSE:To discharge sediment efficiently, by setting a relay sliding cylinder between an outlet for containing a spiral body in and a discharging cylinder, and by arranging sluice valves for opening and closing the outlet and the sliding cylinder respectively. CONSTITUTION:Sediment injected into a sediment injection container 1 through an inlet 2 is conveyed into the rear half section 11a of a sliding cylinder via an induction cylinder 3' through an outlet 3 along with the rotation of a spiral body 4. After that, when a sliding cylinder 11 comes to the advancing limit, then a sluice valve 14a is closed and a sluice valve 14b is closed. After that, along with the backing of the cylinder 11, sediment is conveyed into a discharging cylinder 7 by the sluice valve 14a for reaction, and when the cylinder 11 comes to the backing limit, then the sluice valve 14a is opened and the sluice valve 14b is closed. Furthermore, sediment is conveyed into a conveying pipe body 10 by repeating the advancing and backing of the cylinder 11.

Description

[Detailed Description of the Invention] (1) Purpose The present invention is an earth and sand conveying device, in particular, for transporting earth and sand excavated by a face to the surface in response to the advancement of the face during underground management construction such as urban sewage construction. The present invention relates to an earth and sand conveying device suitable for

The work of transporting earth and sand to the ground in response to the advancement of the face is
Since the working space is narrow and the working conditions are poor, there is a demand for the development of a new unloading device from the viewpoints of work efficiency, safety, and miniaturization of the device.

Traditionally, when constructing sewers, soil and other materials were mostly transported using steel pipes using mud pumps, and if the construction conditions were right, direct pumping using pistons was also used.

Although fluid transport is extremely efficient in terms of transport efficiency, it requires solid-liquid separation of the discharged muddy water, which requires significantly large equipment and high processing costs. The drawback is that transportation itself is difficult.

On the other hand, the biggest advantage of the method of direct pressure feeding with a piston is that the earth and sand can be transported as is.
However, conventional piston pumping devices have various drawbacks because the hydraulic cylinder that pumps the earth and sand is installed in series on the same steel pipe that takes in the earth and sand, or on its extension. The seal must be made very tight to prevent the 1st Bc1 earth and sand from directly touching a part of the hydraulic cylinder, and since the negative pressure of the piston draws earth and sand into the pressure-feeding tube, the airtightness of the piston and various gate valves must be ensured. The mechanism of these parts becomes complicated and expensive, and maintenance costs are also high. Secondly, since there are hydraulic cylinders in series on the extension line of the earth and sand pumping pipe, it is difficult to provide a relay pressurizing device in the middle of the pipe in a narrow work space.

As a result of not being able to perform relay pressurization in the middle of the piping,
Thirdly, a large-capacity hydraulic system must be built into the tip face in order to overcome the resistance within the pipe due to the extended distance, which increases the size of the entire system.

An object of the present invention is to eliminate the drawbacks of the above-mentioned conventional earth and sand conveying apparatus using a hydraulic piston, and to provide a conveying apparatus that can safely discharge excavated earth and sand from an underground face, which is a narrow working space, with a high delivery rate. There is a particular thing.

(2) Structure In the earth and sand conveying device according to the present invention, a spiral body is installed inside the earth and sand input box and reaches the cylindrical outlet in front of the input port to constitute a spiral delivery mechanism, and the spiral body is configured to open and close the cylindrical outlet. At the same time, a guide cylinder is led out in front of the gate valve, and a discharge cylinder facing from the front of the guide cylinder through a relay sliding cylinder described later is supported on a fixed body,
A moving body that moves forward and backward according to the operation of the reciprocating engine is interposed between the opposing surfaces of the guiding cylinder and the discharging cylinder,
A relay sliding cylinder whose rear half is slidably fitted to the guiding cylinder and whose front half is slidably fitted to the discharge cylinder is supported on the movable body, and the relay sliding cylinder is supported on the moving body. A gate valve is attached to open and close the body, and when the moving body is almost at its backward limit, the relay sliding cylinder is closed and the cylindrical outlet is opened, and this state is maintained even while the moving body is moving forward. The driving engine of each gate valve is operated to reciprocate the moving body so that the relay sliding cylinder is opened and the cylindrical outlet is closed at almost the forward limit of the moving body, and this state is maintained even while the moving body is moving forward. By linking with the motion engine, the earth and sand that is forced into the rear half of the relay sliding tube from the cylindrical outlet through the guiding cylinder while the moving body is moving forward is transferred to the relay sliding tube while the moving body is retreating. It is configured to be pushed into the front half of the moving body and further pushed forward from inside the discharge cylinder.

The following description will be given according to the drawings of the embodiment. Reference numeral 1 denotes an earth and sand inlet box made of a steel plate, in which an inlet 2 is opened at the top, a cylindrical outlet 3 made of a thin tube is opened at the front, and a cylindrical outlet 3 made of a thin tube is opened at the front. The mqit edict's simple spear for the road of 3I is made to appear on the road. Inside the earth and sand input box 1, a spiral body 4 extending from directly below the input port 2 to the inside of the cylindrical outlet 3 is disposed horizontally to form a spiral delivery mechanism 5.

Reference numeral 6 denotes a prime mover for rotating the spiral body 4 in a predetermined direction, and a hydraulic motor is used, for example. Reference numeral 7 denotes a discharge cylinder made of a thin tube, which is supported on the fixed body 8 so as to face the guide cylinder 3I at a predetermined distance from the front. The fixed body 8 extends horizontally rearward and also serves as a pedestal for the spiral feeding mechanism 5, and maintains a constant distance between the facing surfaces of the guiding cylinder 3t and the discharging cylinder 7, as well as the moving body described later. 9
This serves as a guide rail when moving forward and backward. Reference numeral 10 denotes a conveying steel pipe connected to the front end opening of the discharge cylinder and extended to a predetermined discharge location. Reference numeral 11 denotes a relay sliding cylinder made of a thin tube, in which the rear half 11a is slidably fitted to the guide cylinder 3', and the front half 11b is fitted to the discharge cylinder 7.
However, in order to make the flow of earth and sand even smoother, the inner periphery of the rear half 11a is slidably fitted to the outer periphery of the guiding cylinder 3I, and the outer periphery of the front half 11b is fitted to the outer periphery of the guiding cylinder 3I. It is preferable that the inner circumference of the cylindrical body 7 be slidably fitted. Reference numeral 12 denotes an elastic gasket attached to each fitting surface, and is made of a material such as a piston ring. The movable body 9 supports a relay sliding cylinder 11 between opposing surfaces of the guiding cylinder 3/ and the discharge cylinder 7, and slides back and forth using the fixed body 8 as a guide rail. Reference numeral 13 denotes a reciprocating engine for moving the movable body 9 forward and backward, and is preferably a hydraulic cylinder or a hydraulic cylinder, for example. 14a is a gate valve attached near the front end of the cylindrical outlet 3,
The electrical connection state between the outlet 3 and the guiding cylinder 3I is controlled.

Reference numeral 14b denotes a gate valve attached to the center of the relay sliding cylinder 11, and the inside of the rear half 11a and the front half f of the sliding cylinder.
Controls the conduction state within ib. 15a is one gate valve 1
The driving engine 15a is a driving engine for opening and closing the gate valve 14b, and is preferably a hydraulic cylinder, a screw jack, or the like.

Then, by alternately operating in conjunction with the operation of the reciprocating engine 13 by a hydraulic circuit as shown in FIG.
Each gate valve 14a, 14b is opened and closed alternately. More specifically, when the reciprocating engine 13 is driven in the extension direction and the relay sliding cylinder 11 together with the movable body 9 reaches almost its forward limit, one gate valve 14a is closed and the other gate valve is closed. The valve 14b is opened, and the relationship between the two gate valves is maintained as it is even while the drive of the reciprocating drive engine 13 changes to the contraction direction and the relay sliding cylinder 11 is retracting as the moving body moves. Ru. Then, when the relay sliding cylinder 11 reaches almost the retreat limit together with the movable body 9, one gate valve 14a is opened and the other gate valve 14b is opened.
is closed, and the relationship between the two gate valves is maintained as it is even while the drive of the reciprocating drive engine 13 is changed to the extension direction and the relay sliding cylinder 11 is moving forward together with the movable body 9. Reference numeral 16 denotes an air breather attached to the upper surface of the cylinder wall of the discharge cylinder 7.

Next, the operating mode of the device of the present invention is shown in Fig. 6 (A) to [H
], the relay sliding cylinder 11 is at the retreat limit together with the movable body 9 [In Fig. A1, one of the gate valves 1
4a is open, and the other gate valve 14b is closed, and the soil thrown into the earth and sand input box 1 from the input port 2 is formed into a cylindrical shape by the rotation of the spiral body 4 as the prime mover 6 is driven. It is press-fitted into the guiding cylinder 31 through the outlet 3. Double gate valve 14.

At tt when the above relationship state of 14b is maintained, when the relay sliding cylinder 11 starts to move forward in the direction of the arrow as shown in Fig. C11 together with the moving body 9, as the sliding cylinder 11 moves forward, the guidance The earth and sand inside the cylinder 3/ is gradually transferred into the rear half 11a of the sliding cylinder. The relay sliding cylinder 11 reaches its forward limit together with the movable body 9. In FIG. 01, one gate valve 14a closes and the other gate valve 14b switches to open. While the above relationship between the gate valves 14λ and 14b is maintained, when the relay sliding cylinder 11 starts to retreat together with the moving body 9 in the direction of the arrow as shown in the figure [D], the sliding cylinder 11 As the slide cylinder 7 moves backward, the gate valve 14a acts as a reaction force, and the earth and sand in the rear half 11λ of the sliding cylinder is forced into the front half 11b, and then the discharge cylinder 7
They are sequentially transferred to the inside. When the relay sliding cylinder 11 reaches the retraction limit together with the moving body 9, one gate valve 14a changes to the opening operation and the other gate valve 14b changes to the closing operation, as shown in the figure [F-]. state.

While the relationship between the two gate valves 14 @ and 14 b is maintained, the relay sliding cylinder 11 together with the movable body 9 begins to move forward in the direction of the arrow CF] as shown in the figure, and as the forward movement progresses, the relay sliding cylinder 11 begins to slide. Although the inside of the rear half 11& of the cylindrical body is in a vacuum state, the earth and sand sent out from the inside of the cylindrical outlet 3 is filled into the rear half 11λ. Relay sliding cylinder 1 together with moving body 9
1 has reached its forward limit [In Figure G3, one gate valve 1
4a is closed, and the other gate valve 14b is opened. While the above-mentioned relationship between the gate valves 14a and 14b is maintained, the relay sliding cylinder 11 moves to [H] together with the moving body 9.
] When it starts to retreat in the direction of the arrow as shown in the figure, the sliding cylinder 1
1, the gate valve 14@ acts as a reaction force, and the earth and sand in the sliding cylinder 11 pushes the earth and sand in the discharge cylinder 7 forward, and transfers it into the conveyance pipe 10.

If the above-mentioned operation is repeated by automatically controlling the hydraulic circuit with a switching valve, the earth and sand will be continuously transported by the transport pipe 10 to a predetermined discharge location.

In implementing the device of the present invention, it is desirable to attach a water injection device, a lubricant injection device, a gravel crushing device, etc. to the input port 2.

(3) Effects The effects of the earth and sand conveying device of the present invention are as follows. 1st
In addition, since the reciprocating engine 13 such as a hydraulic cylinder is separated from the conveying pipe, there are no narrow parts in the pipe, and therefore it is difficult to cause blockage of earth and sand, and it is possible to remove solids such as gravel.
Even earth and sand with high moisture content can be transported regardless of soil properties.

Secondly, since the spiral feeding mechanism 5 is used as the earth and sand sending mechanism, there is almost no need to maintain the confidentiality of each cylindrical sliding part that makes up the conveyance pipe, and the device can be made simple and compact. Can be installed even in narrow work spaces.

Thirdly, since the earth and sand are pumped in a straight line, a plurality of the same devices can be connected at any point along the conveyance pipe, and the conveyance distance can be freely changed.

[Brief explanation of the drawing]

FIG. 1 is a side view of the device of the present invention, FIG. 2 is a plan view of the device of the present invention, FIG. 3 is an enlarged cross-sectional view of the cylindrical body fitting part of the device of the present invention, and FIG. 4 is a diagram of the device of the present invention. It is an enlarged cross-sectional view of the gate valve attachment part of the device, [A] shows an example in which a hydraulic cylinder is used as the drive engine, and [B] shows an example in which a screw jack is used in the drive engine. Figure 5 is a hydraulic circuit diagram of the device of the present invention, and [A] to [H] in Figure 6.
FIG. 2 is an explanatory diagram showing the operating mode of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Sediment input box, 2... Input port, 3... Cylindrical outlet, 3/... Guidance cylinder, 4... Spiral body, 5...
... Spiral feeding mechanism, 7... Discharge tube, 8... Fixed body, 9... Moving body, 11... Relay sliding tube, 11
@... Second half, 11b... First half, 13... Reciprocating engine, 142... Gate valve, 14b... Gate valve,
xd... Drive engine, 15b... Drive engine.

Claims (1)

[Claims] A spiral body (4) that reaches into the cylindrical outlet (3) in front of the inlet (2) of the earth and sand input box (1) is installed inside the earth and sand input box (1) to constitute a helical dispensing mechanism (5). (
3) A gate valve (14a) for opening and closing is attached, and a guiding cylinder (3)' is led out in front of the gate valve (14a), and a relay sliding cylinder (11), which will be described later, is guided from the front of the guiding cylinder (3)'. ) is supported on the fixed body (8), and a reciprocating engine ( A movable body (9) that moves forward and backward according to the operation of 13) is interposed, and the rear half (11a) is slidably fitted to the guiding cylinder (3)', and the front half (11a) is slidably fitted to the guiding cylinder (3)'.
11b) supports the relay sliding cylinder (11) which is slidably fitted to the discharge cylinder (7) on the movable body (9) and opens and closes the relay sliding cylinder (11). Gate valve (14b
), the relay sliding cylinder (11) is closed almost at the backward limit of the moving body (9), and the cylindrical outlet (3) is closed.
is opened and this state is maintained even while the moving body (9) is moving forward, and when the moving body (9) is at almost the forward limit, the relay sliding cylinder (11) is opened and the cylindrical outlet ( 3)
The driving engine (1
5a) (15b) as the reciprocating engine (13) of the moving body (9).
).