JPH0412285Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement of a clamp tool for connecting a delivery hose used at a ready-mixed concrete pouring site.

[Prior art]

Generally, ready-mixed concrete is supplied from a mixer truck to a pump truck, and from the pump truck, it is conveyed to the vicinity of the pouring site via a transfer hose and metal pipe, and then guided to a delivery hose, which is operated by a worker. Pouring is carried out. Since using a long delivery hose from the beginning is cumbersome to handle, it is common practice to add additional hoses as needed as the installation area increases.

By the way, in the conventional connection of a delivery hose, a cylindrical body is divided into two along its axis, and one side edge in the circumferential direction of the halved cylindrical body is mutually supported,
Rubber for sealing is pasted on the inner peripheral surface of each half cylinder, and the two half cylinders are sandwiched across both ends of the matched delivery hose, and the other side edges in the circumferential direction are held together. The connection is being made.

[The problem that the idea aims to solve]

However, such conventional clamping tools have a problem in that their restraining force on the delivery hose is weak, and when the discharge force of the pump truck is increased, the delivery hose becomes disconnected and the sealing function is no longer sufficient.

The present invention was developed in view of the above circumstances, and its purpose is to provide a large restraining force to the delivery hose, to ensure that the delivery hose does not come off, and to have an excellent sealing function at the connection part. To provide a clamp tool for connecting a delivery hose.

[Means to solve the problem]

The delivery hose connection clamp according to the present invention is curved so as to hold the ends of the delivery hoses that are abutted against each other, and the ends in the circumferential direction are approached with their positions shifted inward and outward. A split collar is attached, and one circumferential end of the split collar is pivotally supported on the outer circumferential surface of the middle part of the split collar in the circumferential direction, and a large number of locking protrusions for the delivery hose are provided on the inner circumferential surface of both ends in the axial direction. A pair of half cylindrical bodies are provided at the other ends in the circumferential direction and are fastened together in a direction that brings both ends of the split collar closer to each other.

[Effect]

According to the present invention, this makes it possible to impart elasticity to the restraint force on the delivery hose, thereby ensuring the restraint force and, at the same time, enhancing the sealing function.

〔Example〕

The present invention will be specifically explained below based on drawings showing embodiments thereof.

Figure 1 is a perspective view of the delivery hose connection clamp device according to the present invention (hereinafter referred to as the product of the present invention);
The figure is a perspective view seen from the back side, Figure 3 is a cross-sectional view with the delivery hose connected, and Figure 4 is a longitudinal cross-sectional view taken along the - line in Figure 3. In the figure, 1 and 2 are half-split cylinders. Body, 3 indicates split collar. Each half cylindrical body 1, 2 is made of metal, has elasticity, and has an appropriate thickness, and is padded on the inner peripheral surface of both ends in the axial direction to a required width over the entire length in the circumferential direction. A large number of notches are formed at a constant pitch in the portion to form a large number of locking protrusions 1a and 2a for biting into the surface of the delivery hose, and by forming the notches, the half cylindrical bodies 1 and 2 are mutually attached. It is designed to be able to bend in the circumferential direction when fastened.

Further, one end edge in the circumferential direction of each of the half cylinders 1 and 2 is pivoted to a bracket 3a fixed to the outer peripheral surface of the split collar 3 using shafts 1b and 2b, respectively, and It is movable. Further, an eye bolt 1e is attached to the other end edge in the circumferential direction of the half-cylindrical body 1 on a shaft passing through a pair of brackets 1c, and a pair of brackets is attached to the other end edge in the circumferential direction of the other half-cylindrical body 2. 2c is erected so that the nut 1f of the eye bolt 1e is locked to the bracket 2c.

On the other hand, the split collar 3 is formed by curving a relatively thin elastic metal band into a substantially cylindrical shape, and the dimension in the axial direction is the same as that of the half cylindrical body 1.
2, one end edge 3a of the opposite opposite side edges is bent outward over the required width, and the other end edge 3b
is curved inward by an amount approximately equivalent to the wall thickness, and both end edges 3a and 3b are shifted inwardly and outwardly and brought closer to each other. The cylindrical shape of the split collar 3 is preferably set to have an inner diameter slightly larger than the diameters of the delivery hoses D ₁ and D ₂ .

Therefore, in the case of such a product of the present invention, as shown in FIG. 1, the two half-cylindrical bodies 1 and 2 are opened to the left and right, and delivered to the split collar 3 from both ends toward the center. After inserting the ends of the hoses D ₁ and D ₂ and abutting each other at approximately the center in the axial direction, the two half-cylindrical bodies 1 and 2 are rotated, and the inner circumferential surfaces of each are divided and the collar 3 is inserted. Close it so that it touches the outer peripheral surface of the eye bolt 1.
With the nut 1e passed between the brackets 2c, screw the nut 1e onto it and tighten.

As a result, both half-cylindrical bodies 1 and 2 press the split collar 3 from its outer peripheral surface, and the split collar 3 has one end edge 3a facing outward and the other end edge 3b facing inside. In the misaligned state, they are overlapped and their inner diameters are reduced, thereby bringing the split collars 3 into close contact with the outer peripheries of both ends including the joint portions of both delivery hoses D ₁ and D ₂ .

In addition, the locking protrusions 1a, 2a formed on the inner circumferential surfaces of both ends in the axial direction of the half-cylindrical bodies 1, 2 bite into the outer circumferential surfaces of the delivery hoses _D1 , _D2, respectively.
Both delivery hoses D ₁ and D ₂ are restrained to prevent them from coming off.

〔effect〕

As described above, in the case of the present invention, the annularly curved split collar is tightened and fixed to the outer periphery of the abutting portion of the delivery hose using the halved cylindrical body, and the inner periphery of both ends in the axial direction of the halved cylindrical body. Since the locking protrusion formed on the surface is bitten into the outer circumferential surface of the delivery hose, the function of preventing the delivery hose from coming off is reliable, and the tightening function of the split collar ensures that the butt portions of the delivery hoses are securely fixed. The present invention has excellent effects such as the ability to obtain a sealing function.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the invented product, Figure 2 is a perspective view from the back side, Figure 3 is a cross-sectional view with the delivery hose connected, and Figure 4 is a vertical cross-section taken along the - line in Figure 3. It is a diagram. 1... Half cylindrical body, 1a... Locking protrusion, 1b...
...Shaft, 1c...Bracket, 1e...Eye bolt, 1f...Nut, 2...Half cylindrical body, 2a...
...locking protrusion, 2b...shaft, 2c...bracket,
3...Split collar, 3a, 3b...Edge portion.

Claims (1)

[Scope of Claim for Utility Model Registration] A clamp for connecting delivery hoses that is designed to hold and connect delivery hoses with their ends abutted against each other, which clamps the ends of the delivery hoses across both ends of the abutted delivery hoses. A split collar which is curved as shown in FIG. The split collar is supported by a pair of halves, which are provided with a large number of locking protrusions for the delivery hose on the inner circumferential surface of both ends in the axial direction, and whose other ends in the circumferential direction are fastened in such a direction that both ends of the split collar are brought closer to each other. A clamp tool for connecting a delivery hose, characterized by comprising a split cylindrical body.