JPH01207595A - Pipe pile driver - Google Patents

Abstract

PURPOSE: To reduce the cost of mechanical section by connecting a rear end section provided with a socket for a rammer to the rear end of an advancing pipe, viewed in the direction of advance without gap. CONSTITUTION: A rammer 3 is arranged in an advancing pipe 2 having a cutting shoe 1 in a front end section, and a conic impact point section 4 is arranged in a support ring 5. A socket 6 tapered in the direction of the conic impact point section 4 and a connecting part 7 as a rammer drill fitted in the socket 6 are provided in the rear end section of the rammer 3. A guide pipe 2b is supported on a floor frame 12 by the supports roller 11 on a base seat 10 at the start point of the indication of a start hole 9, and the rear end of the rammer and the rear end of the guide pipe 2b viewed in the direction of advance are connected to each other without gap by the socket 6 and the rammer drill 7. By this constitution, the cost of mechanical section can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pipe piling machine for internal piling of pipes, such as protection pipes or conduits.

BACKGROUND OF THE INVENTION The driving of pipes designated as drilled pipes in any case requires a pile driver and a starting shaft or starting hole for preparing the drilled pipe. In order to reduce the size of the starting hole, it is registered in West Germany that the pile driver should be placed in the digging pipe instead of being inserted into the rear end of the pipe directly with its striking tip or with the help of a pile grip. It is well known by Utility Model Registration No. 8707158. According to this method, the required length of the starting hole is determined primarily by the length of the excavation pipe.

[Problem to be Solved by the Invention] In order to drive the digging pipe, the known internal pile driver is surrounded by a cover pipe installed in the digging pipe, in which case the spherical striking tip of the pile driver is snugly fitted into the inner ring installed at the front end of the cover pipe in the direction of excavation, so that the driving force of the pile driver can be attached movably or fixedly to the pile driver case. The impact will be transmitted by the striking tip to the inner ring, ie to the covered pipe. In order to change the direction of the propulsion force transmitted to the cover pipe and convert it into an excavation force for the excavation pipe, an external Colette exists. The driving force is thereby redirected by the inner ring, cover pipe and outer collet towards the digging pipe. The pile driver and the pipe are connected to each other by tensioning material in order to avoid rebound caused by the impact of the anvil of the outer collet of the cover pipe adjoining the excavation pipe at an obtuse angle.

SUMMARY OF THE INVENTION The object of the invention is to improve internal pipe driving machines and, in particular, to reduce mechanical costs.

[Means for Solving the Problems] The above problem is solved by the pipe pile driving machine according to the present invention, that is, the rear end of the pile driver is connected to the rear end of the digging pipe in the digging direction. The problem is solved by a pipe piling machine for internal piling made of pipe. In a preferred embodiment of the present invention, the pile driver and the digging pipe are tightly connected without any gaps (Claim 2)
. In another preferred embodiment of the present invention, the rear end of the pile driver is provided with a socket that tapers in the digging direction (claim 4).

[Function] By connecting the thickened rear end of the pile driver or the pile driver case to the rear end of the excavation pipe, the driving force of the pile driver is straight and does not change direction. It is guided to the digging pipe as digging force. Moreover, neither a pipe with a collet additionally surrounding the pile driver nor a tensioning device connecting the digging pipe and the pile driver to prevent splashing is required.

In a further embodiment of the invention, one or more connecting parts are arranged between the socket and the digging pipe (claim 5).

Due to the connecting parts between the socket and the stake pipe, such as a stake drill or a stake section, the rear end of the stake driver, which is thickened for the socket, is adapted to different pipe internal diameters. This means that it is only necessary to fit one or more connecting parts adapted to the internal diameter of the tunneling pipe into the socket of the stake.

[Example] The invention will be explained based on the following examples.

As shown in FIG. 1, a screwdriver 3 is disposed inside a digging pipe 2 having a cutting shoe 1 at its front end, and the screwdriver has a conical striking tip 4. are arranged in the support ring 5. At the rear end of the pile driver 3, there is a socket 6 which tapers toward the striking tip 4, and a socket fitted onto the socket 6.
There is a connecting part 7, made as a stake-driving drill, which connects the rear end of the stake-driver 3 with a socket 6 and a stake-driving drill 7.
It is connected to the rear end of the digging pipe 2.

FIG. 2 shows the arrangement of the guide pipe 2b relative to the digging pipe 2a which has been driven almost completely into the ground 8. The guide pipe 2b is located at the indicated start point in the start hole 9 and is supported on the floor frame 12 by support rollers 11 arranged in a columnar manner on the base 10. The pile driving machine 3 has a rear end connected to the guide pipe 2b by a conical socket 6 and an inserted pile driving awl 7.

A striking piston (not shown) that reciprocates within the case of the pile driving machine 3 and weighs several tons in some cases transfers its striking energy to the socket 6 and the pile driving &! 7, it is transmitted to the guide pipe 2b, and the guide pipe is made to dig every time it is struck. The striking piston is usually moved by compressed air or water pressure, or mechanically. In this case, an air line 13 with an interlock valve 14 leads into the housing of the pile driving machine 3 from a compressor (not shown).

[Brief explanation of the drawing]

1 is a longitudinal sectional view of an internal pile driver according to the invention, connected to the rear end of a digging pipe by a socket at the rear end of the pile driver; FIG. Figure 2 shows the first hole in the starting hole after the guide pipe has been placed in the excavation pipe that is almost completely driven into the ground.
1 shows a piling machine according to the diagram. 1...Cutting shoe 2...Drilling pipe 2
b...Guide pipe 3...Pile driving machine 4.
... Pointed end 5 ... Support ring 6 ...
・Socket 7...Connection part 8...Underground 9...Start hole 10...Pedestal 11...Support roller 12...
Floor frame 13... Air pipe 14... Interlocking valve and 3 others

Claims (1)

[Claims] 1. A pipe pile driver for driving inside a pipe, characterized in that the rear end of the pile driver (3) is connected to the rear end of the excavation pipe (2) in the excavation direction. Machine. 2. The pipe pile driver according to claim 1, wherein the pile driver (3) and the digging pipe (2) are connected without any gap. 3. The pipe pile driver according to claim 1 or 2, characterized in that a socket (6) is provided at the rear end of the pile driver (3). 4. Pipe piling machine according to claim 3, characterized in that the socket (6) is tapered in the digging direction. 5. Pipe piling machine according to claim 3 or 4, characterized in that one or more connecting parts (7) are arranged between the socket (6) and the digging pipe (2). 6 The striking tip of the pile driver (4) and the digging pipe (2)
Pipe piling machine according to any one of the preceding claims, characterized in that there is a support ring (5) between the pipe piling machine and the pipe piling machine.