JPS61175387A - Elastic expansion cylinder body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The elastic extensible cylinder of the present invention is an elastic cylinder used in an earth and sand transfer device that takes excavated earth and sand into the inside of the elastic cylinder by expansion and contraction of the elastic cylinder and discharges it. Regarding a telescopic cylinder.

(Prior art) Conventionally, excavated soil, ready-mixed concrete, slurry such as sludge, and granular materials such as rice, soybeans and quarried stone (hereinafter simply referred to as
Screw conveyors, belt conveyors, etc. are used to transport or discharge earth and sand. First, a screw conveyor is used to carry earth and sand to one end of a belt conveyor, and then the belt conveyor is used to transport the earth and sand to a predetermined location. However, in the case of a screw conveyor, it is fine when the material to be transported is small, but when transporting excavated soil, when the excavated soil contains pebbles with a diameter of, for example, 10 to 103,
There are problems in that it requires a stone crusher or a large screw conveyor with a large diameter before transportation. In addition, in the case of belt conveyors, it is difficult to seal them tightly and it is difficult to completely prevent the objects being carried from scattering or falling, and there is also the problem that it takes a large amount of equipment to completely shield the objects being carried from wind and rain. be.

Therefore, a transfer device 31 that uses an elastic stretchable body to transport earth and sand as shown in FIG. 3 can be considered. The transfer device 31 has two reciprocating on-off valves and an on-off valve 34 attached to both axial ends of an elastic telescopic cylinder 32,35. Transfer device 3
1, the elastic cylinder 32 is expanded and contracted in a predetermined order in conjunction with the opening and closing operations of the reciprocating on-off valve 33 and the on-off valve 34. The earth and sand are taken in from one end 32a of the elastic cylinder 32, and then the elastic cylinder 32 is contracted to remove the earth and sand inside the elastic cylinder 32.
It is discharged from the other end 32b. However, conventionally, there has been no elastic cylinder 32 used in a transfer device 31 in which the elastic movement of the cylinder 32 is one of the main functions of transportation.

In this type of transfer device 31, as shown in FIG.
0 is fixed to the reciprocating on-off valve 33 and the on-off valve 34. The elastic telescopic cylinder 32 is attached and fixed to the reciprocating on-off valve 33 and the on-off valve 34 via this attachment fitting 40.

These are fixed by the expansion and contraction of the elastic cylinder 32.
It must be strong enough to withstand a large repeated stretching force applied to the elastic tube 40, and also to withstand a large force applied to the attachment part 40 due to the weight of the transported object inside the elastic extensible cylinder.

Further, the elastic telescopic cylinder 32 is periodically removed from the reciprocating on-off valve 33 and the on-off valve 34 for inspection or replacement. Therefore, the elastic telescopic cylinder is attached to the mounting bracket 40.
No special jigs or tools are required for attachment and detachment, and it is necessary to be able to attach and detach easily and in a short time.

In order to firmly attach the elastic extensible cylinder 32 to the reciprocating on-off valve 33 and the on-off valve, for example, as shown in FIG. There is also a method of fixing the elastic telescopic cylinder and the mounting fitting 40 and further firmly fixing it to the reciprocating on-off valve and the on-off valve 34. However, the cross-sectional shape of the mounting bracket 40 is complicated, making it difficult to work, and it is difficult to attach and detach the elastic extensible cylinder 32 to the mounting bracket 40 (because there is a constriction 39, it is difficult to deform the constriction 39 of the elastic extensible cylinder 32). There is a problem in that it is extremely difficult and time-consuming to fit the mounting fittings 40 together.

Further, the mounting portion 3 of the elastic extensible cylinder 32.35 can withstand large axial tension and pressure that occurs when the elastic extensible cylinder 32.35 expands and contracts in the axial direction.
It is necessary to sufficiently withstand the downward force of the mounting portion 38 due to the weight of the transported object moving inside the mounting portion 5. Further, it is necessary that the mounting part 38 be easily attached and detached from the mounting fitting 40, and that the mounting fitting 40 be easily attached and detached from the reciprocating on-off valve 33 and the on-off valve 34, and furthermore, that it can be replaced in a short time.

(Purpose of the Invention) Therefore, the present invention provides for easy attachment and detachment of the attachment part of the elastic extensible cylinder and the attachment fitting, as well as easy attachment and detachment of the attachment fitting and the on-off valve without the use of auxiliary tools such as jigs. The purpose is to provide an elastic telescopic cylinder that can be replaced and operated at any time. Further, the present invention provides an elastic extensible cylinder for use in a transfer device, which allows for large expansion and contraction in the axial direction of the elastic cylinder, and whose mounting portion can sufficiently withstand large tensions and pressures generated during expansion and contraction, as well as large forces due to the weight of the transported object. The purpose is to

(Structure of the Invention) The elastic extensible cylinder used in the transfer device according to the present invention consists of an extensible cylinder part and attachment parts integrally formed at both ends of the cylinder part in the axial direction, and the cylinder part is located on the outside. It has an outer surface in which convex portions and outer concave portions are alternately connected, and an inner surface in which inner concave portions corresponding to the outer convex portions and inner convex portions corresponding to the outer concave portions are alternately connected. In an elastic extensible cylinder in which a covered reinforcing fiber layer is embedded and a reinforcing material is embedded in an inner convex portion outside the reinforcing fiber layer, the mounting portion is fixed to the outer end of the cylindrical neck portion, and It consists of a flange portion that protrudes outward, and is characterized by a ring-shaped tightening reinforcing material embedded in the flange portion.

Further, it is preferable that the flange portion has an axially inner surface that is inclined so as to have a thickness that gradually increases toward the radially inner side of the flange portion.

(Example) Hereinafter, one example of the elastic cylinder according to the present invention will be described based on the drawings. 1 to 3 are diagrams showing one embodiment of the present invention.

First, the configuration will be explained. In FIGS. 1 and 2, reference numeral 1 represents an elastic cylinder according to the present invention. The elastic cylinder 1 is composed of a cylinder part 2 which can be expanded and contracted, and attachment parts 3 integrally formed at both ends of the cylinder part 2 in the axial direction. The cylindrical portion 2 has an outer surface 7 in which outer convex portions 5 and outer concave portions 6 are alternately connected, and an inner surface 10 in which inner concave portions 8 corresponding to the outer convex portions 5 and inner convex portions 9 corresponding to the outer concave portions 6 are alternately connected. It has A rubber-coated reinforcing fiber layer 12 is embedded within the cylinder portion 2 and the mounting portion 3, and an annular reinforcing member 13 is embedded within the inner convex portion 9 on the outside of the reinforcing fiber layer 12.

In addition, the mounting portion 3 includes a cylindrical neck portion 15 and a cylindrical neck portion 15.
A ring-shaped tightening reinforcing member 17 is embedded in the flange portion 16. Further, it is preferable that the flange portion 16 has an axially inner surface 16a that is inclined so as to have a thickness that gradually increases in the radially inward direction.

Further, reference numeral 21 denotes a mounting bracket, and the mounting bracket 21 is composed of a ring-shaped engagement part 22 divided into two parts and a fixing part (not shown in the figure) that fixes the engagement part 22 in a ring shape. There is. Further, the retaining portion 22 is composed of a metal fitting flange portion 22a and a semi-cylindrical portion 22b integrally made with the metal fitting flange portion 22a. Metal fitting flange part 22
At the periphery of a, an elastic cylinder 1 is connected to a transfer device 31 (described later).
A plurality of axial screw holes 25 are provided for bolting to. Moreover, the inside of the semi-cylindrical part 22b fits into the flange part 16 and the neck part 15 of the mounting part 3, and
A pair of fixed parts connected to both ends of the semi-cylindrical part 22b are provided. The pair of fixed parts has a two-part engaging part 18.
A fixing screw hole for fixing the attachment to the attachment part 3 is provided. A plurality of machine screw holes 26 are provided radially inward on the outer periphery of the semi-cylindrical portion 22b, and one end of a guide device (not shown) is screwed thereto, if necessary.

When the engaging portion 22 is attached to the on-off valve of the transfer device 31, the engaging portion 22 is screwed to the transfer device, and the elastic telescopic cylinder 1 is firmly fixed to the on-off valve.

The attachment part 3 is made to sufficiently withstand large repeated stress and pressure in the axial direction of the elastic cylinder 1 caused by expansion and contraction of the elastic cylinder 1, and is made to withstand the large repeated stress and pressure of the transported object inside the elastic cylinder 1. It is made strong enough to withstand the large force exerted on the attachment part of the elastic cylinder 1 due to its weight.

Next, the effect will be explained. First, a case will be described in which the mounting bracket 21 is fixed to the mounting portion 3 of the elastic cylinder 1 of the present invention.

In the engaging portion 22 of the mounting bracket 21 which is divided into two parts,
The radial inner surface 22c of the metal fitting flange portion 22a and the inner surface 22d of the semi-cylindrical portion 22b are very easily inserted from the outside of the mounting portion 3 so that they fit into the inner surface 16a of the flange portion 16 and the outer surface 15a of the neck portion 15, respectively. mounted on. There is no constriction on the inner surface 16a of the flange portion 16 to strengthen the fit between the elastic cylinder 1 and the mounting fitting 21. Moreover, when attaching the mounting bracket 21 to the elastic extensible cylinder 1, it is not difficult to attach it by deforming the constriction and fitting it. Therefore, the installation work can be done in an extremely short time.

Next, the pair of fixing parts connected to both ends of the semi-cylindrical part 22b are fitted together and screwed into the fixing screw holes, so that the semi-cylindrical part 22b is easily fixed. Therefore, the engaging portion 22 and the attachment portion 3 are firmly fixed.

Another mounting bracket 21 is very easily attached and fixed to the attachment part 3 at the other end of the elastic extensible cylinder 1 in the same manner as described above.

Next, the mounting brackets 21 are attached to the mounting portions 3 at both ends of the elastic cylinder 1.
is fixed, the elastic extensible cylinder 1 is moved to the transfer device 31 (third
The mounting bracket 21 is fixed to the reciprocating on-off valve 33 and the on-off valve 34 with bolts through the bolt holes of the mounting bracket 21 (see figure).

When the elastic extensible cylinder 1 is removed from the reciprocating on-off valve 33 and the on-off valve 34 of the transfer device 31, and the mounting bracket 21 is also removed, it can be removed very easily by reversing the procedure described above.

Therefore, according to the elastic extensible cylinder 1 of the present invention, the elastic extensible cylinder 1 can be attached and detached from the on-off valve of the transfer device 31 very easily and in a short time.

Further, when the earth and sand are discharged by the expansion and contraction operation of the elastic cylinder 1 attached to the transfer device 31, an extremely large tension is applied to the attachment part 3 of the elastic cylinder 1 in the axial direction of the elastic cylinder 1. and pressure acts. In addition, when earth and sand are taken into the inside of the elastic cylinder 1 in conjunction with the expansion and contraction of the elastic cylinder 1 and the opening and closing of the reciprocating on-off valve 33 and the on-off valve 34, and are further discharged, the attachment part 3 has a large Force acts. However, the mounting portion 3 is made sufficiently strong to withstand large repeated forces. Therefore, the mounting portion 3 is sufficiently durable for long-term use.

(Effects of the Invention) As explained above, according to the elastic cylinder used in the transfer device according to the present invention, when the elastic cylinder is attached to the on-off valve, the attachment part of the elastic cylinder and the mounting bracket can be attached and detached. This can be done extremely easily and in a short time without using any jigs or tools, and the mounting bracket and on-off valve can also be attached and detached extremely easily.

In addition, the elastic tube can be expanded and contracted to a large extent in the axial direction, and the elastic tube mounting portion can sufficiently withstand large expansion and contraction forces generated during expansion and contraction as well as large repeated forces due to the weight of the transported object.

[Brief explanation of drawings]

1 and 2 are views showing one embodiment of an elastic cylinder according to the present invention, with FIG. 1 being a partial sectional view thereof, and FIG. 2 being an enlarged partial view thereof. FIG. 3 is a schematic diagram for explaining the operation of a transfer device using an elastically extensible cylinder, and FIG. 4 is a partial cross-sectional view of the attachment portion of a conventional elastically extensible cylinder attached to the transfer device. 1------1 telescopic hose, 2------1 cylindrical part, 3------1 mounting part, 5---outer convex part, 6----outer recessed part, 7- -----One outer surface, 8---One inner recess, 9---One inner convex portion, 10---One inner surface, 12---One reinforcing fiber layer, 13. -----One reinforcing material, 15---One neck part, 16------Flange part.

Claims (2)

[Claims] (1) Consisting of a telescopic cylindrical part and a mounting part integrally formed at both axial ends of the cylindrical part, the cylindrical part has an outer surface in which outer convex parts and outer concave parts are alternately connected, and an outer convex part. It has an inner surface in which inner recesses corresponding to the parts and inner protrusions corresponding to the outer recesses are alternately connected, and a rubber-coated reinforcing fiber layer is buried in the cylinder part and the mounting part, and the outer part of the reinforcing fiber layer In an elastic cylinder with a reinforcing material embedded inside the inner convex part,
An elastic extensible cylindrical body, characterized in that the attachment part is fixed to the outer end of a cylindrical neck part and comprises a flange part protruding radially outward, and a ring-shaped tightening reinforcing material is embedded in the flange part. (2) The elastic cylinder according to claim 1, wherein the flange portion has an axially inner surface that is inclined so as to have a thickness that gradually increases in a radially inward direction.