JPS603232Y2 - pipe support - Google Patents

Description

[Detailed description of the invention] This invention relates to a pipe support for temporary construction work.

Pipe supports are used as shoring to support floors or beam forms in temporary construction work, and there are externally threaded types and internally threaded types.

Both are composed of an expandable and slidable upper tube and a membrane tube, and generally an externally threaded pipe support is often used.

By the way, in conventional externally threaded pipe supports, the adjustment screw located at the top of the membrane tube is obtained by welding a separate adjustment threaded tube with pre-cut threads to the membrane tube body using arc welding or the like. It was.

In other words, if the adjustment screw is formed by cutting a screw directly into the membrane tube body, the wall thickness will become thinner and the strength of the adjustment screw will be extremely reduced. This was made into a threaded pipe and welded to the main body of the membrane pipe to form an integral joint.

However, the pipe support obtained by the above method is not only not reliable in terms of the risk of weld cracking or the strength of the adjustment screw, but also
It takes time and effort to process, the productivity is not very high, and there are also problems in terms of processing cost, such as the need to prepare adjustment threaded pipes with different pipe thicknesses.

Furthermore, the presence of welded areas was not very desirable in terms of appearance.

This invention aims to eliminate the above-mentioned drawbacks, provide a pipe support that has good workability and productivity, is highly safe in use, and has a beautiful appearance. It is characterized by the adjustment screw being integrally formed in the upper part of the membrane tube by direct thread rolling.

In other words, in the conventional method of forming adjustment screws by cutting, it is necessary to prepare a thick pipe, cut the thread into it, and then weld it to the membrane tube. This method allows an adjustment screw to be placed directly on the top of the membrane tube, thereby eliminating the need for welding.

Further details will be described below with reference to the drawings cited as an embodiment.

First, the structure of the pipe support will be explained. Reference numeral 1 is a clay pipe, which has a plurality of pin holes 2 in the longitudinal direction, and is inserted into a membrane pipe 3 so as to be movable up and down.

Reference numeral 4 denotes an adjustment screw provided at the upper part of the membrane tube 3, which has an adjustment hole 5 extending vertically therethrough, and an adjustment pedestal 7 having a handle 6 is screwed onto the outer periphery of the adjustment hole 5.

A pin 8 supports the upper tube 1 at a desired working length, and is inserted into the adjustment hole 5 of the adjustment screw 4 and the pin hole 2 formed in the upper tube 1 on the adjustment base 7.

The height at which the upper tube 1 is supported can be coarsely adjusted by selecting the pin holes 2, and can be finely adjusted by rotating the adjustment base 7.

Reference numeral 9 denotes a cap placed on the top of the adjusting screw 4, and is used to prevent the upper pipe 1 from swaying and to prevent concrete from entering, which tends to occur during use.

10 is a receiving plate provided at the top of the upper tube 1, and 11 is a base plate provided at the bottom of the hip bone 3.

This invention is characterized in that the adjustment screw 4 in the pipe support as described above is integrally formed above the hip bone 3 by direct thread rolling.

FIG. 2 is a longitudinal cross-sectional view of the insertion portion of the upper tube 1 into the hip bone 3, in which the adjustment screw 4 is integrally formed as a continuous body of fiber tissue of the material constituting the hip bone 3, and the adjustment pedestal 7 is shown in FIG. This shows that they are screwed together using male and female square screws.

As mentioned above, in the pipe support of this invention,
Because the adjustment screw is provided as part of the hip bone by the rolling method, it forms a strong integral structure, compared to the conventional example in which the adjustment screw tube and the membrane tube body are joined by welding. There is no risk of weld cracking, and the force received from the upper tube during use is evenly distributed throughout the membrane tube, making it extremely strong.

In addition, since the adjustment screw is formed as a continuous fiber tissue, it has extremely high tensile strength compared to conventional adjustment screws obtained by cutting, and can be used especially for screw bottoms that require strength. The parts are hardened by work and become solid, exhibiting high strength against the forces received from the upper tube during use, and extremely durable.

In addition, since the rolling process is performed directly on the hip bone, the labor of welding is eliminated and workability is extremely high, making it possible to mass-produce highly accurate and uniform products.In addition, unlike cutting, there is no cutting chips, making it easier to insert the material. It has a high retention capacity, and furthermore, it is not necessary to consider the pipe thickness required for cutting thread processing, and it is extremely economical.

Further, as shown in FIG. 2, when the adjustment screw is rolled, a protrusion is formed on the inner surface, and this protrusion has the advantage of preventing the upper tube from sagging.

Furthermore, since it is a rolling process, the threaded surface is smooth, and since it is not welded as is the case with cutting methods, it has a beautiful appearance and has a high commercial value.

As described above, this invention creates a practical pipe support with excellent durability, workability, productivity, economy, and extremely good commercial value by directly rolling the adjustment screw onto the upper part of the hip bone. This is what we could have provided.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a pipe support according to this invention, and FIG. 2 is an enlarged longitudinal sectional view of the main part. 1...Top pipe, 2...In hole, 3...
... Hip bone, 4 ... Adjustment screw, 5 ... Adjustment hole, 7 ... Adjustment pedestal, 8 ... Pin.

Claims (1)

[Scope of utility model registration request] A plurality of pin holes are provided through the upper tube, and an adjustment screw having an adjustment hole extending vertically through the upper portion of the membrane tube into which the upper tube is inserted, and an adjustment pedestal screwed into the adjustment screw are provided. A pipe support in which an upper pipe is supported on the adjustment pedestal by a pin inserted through the adjustment hole and the pin hole, characterized in that an adjustment screw is directly rolled on the upper part of the membrane pipe.