DE2117142A1 - Hydraulic ramming unit, especially for ramming duct boards and lightweight profiles - Google Patents

Description

Pried * Krupp limited liability company in Essen

Hydraulic ramming unit, especially for ramming duct boards and lightweight profiles

The present invention relates to a HydraulikKRammeinheit, in particular for ramming piles and lightweight profiles, consisting of a supporting frame, one or more ^r arranged on this power stations and one or more vertically erected steel beams, the Mäklern each having a hydraulic pile hammers and to be mounted ligand material to be rammed serve as .guide »

Ramming units are mainly used to build sewer trenches The length of the pile used is about 6 hu

Pneumatically operated ramming units are known which the pile hammer itself and the winch required for lifting and lowering are operated with compressed air «, With these ramming units, it is possible to use one and the same energy source, for example a mobile compressor, to supply the existing machines.

A further development in the field of piling units is the use of hydraulically operated piling hammers dar «Compared to the pneumatic pile hammer, these have a higher number of blows per minute and a greater one Impact duration onj causing damage to the ramming * good to be avoided. Hydraulically operated pile hammers also have a lower specific energy consumption than pneumatic pile hammers and work significantly

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quieter than the devices operated with compressed air », Hydraulic hammers are used when using suitable hydraulic oils regardless of the ambient outside temperature.

Up to now, a rope was used to raise and lower the hammer guided via pulleys to a likewise hydraulically operated winch, the associated drum brake only lifts, when there is a certain oil pressure in the system.

In addition, the known hydraulically operated Piling units provided a further hydraulic winch that Press the pile hammer over a rope and pulleys on the Hammgut during the R am τη ens. The .hydraulic and Control-related encryption of the work functions taking into account the condition that when lowering the pile * Hammafers has to wind up the prestressing winch and the hoisting winch is unwound under a small tension and when lifting the pre-tensioning winch also with a certain pre-tension is pulled up in order to avoid slack rope, brought a considerable effort on control valves and Hydraulic lines with it »

In contrast to pneumatic ramming units, at which the energy source in the form of a mobile compressor must be provided, are the power stations in hydraulic ramming units - consisting essentially consisting of a diesel engine, a hydraulic pump and a hydraulic oil tank - permanently installed. The power stations including the associated control valves are characterized by their compact design,

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The construction of the hydraulic ramming unit described above, however, is too expensive and complicated. The on top of each other the tuning of the winches, the rope guidance, the low speeds (sometimes less than one turn per minute) of the directly driving winches and the fixed arrangement of the necessary controls on the multi-gym lead to a decrease in the performance of the piling unit and failures in operation «,

There is also a hydraulic ramming unit has become known, which has one or more rigid leaders, on which A hydraulic motor is fixedly arranged at the upper end. This drives a chain that surrounds the associated leader via a chain wheel, which drives a hydraulic ramrammer wearing.

The chain is used to raise, lower and pretension the hydraulic pile hammer concerned. The disadvantage of this The ramming unit consists in the fact that it is not possible without the aid of additional lifting equipment to raise or lower the existing leader in relation to the associated support unit. However, this requirement must must be met, especially when ramming underfloor, so that the pile is safely guided at the leader at all times.

Since the brokers cannot be bent, they have to can be dismantled using an additional hoist to facilitate the transport of the piling unit.

An evaluation of these disadvantages shows that the advantages achieved by using a chain as a suspension element namely the clamping of a winch and the complicated ones

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control-related encryption of two _{interacting winches}} not for carrying in this version, apart from the drive motor, a second hoist is again required ·

at the top The application of the hydraulic motor Sude der Mäkler can be described as unfavorable, at least in terms of maintenance and weight distribution.

The present invention has set itself the task, above all an operationally safe and without additional Effort to create an operational hammer unit.

According to the invention, this object is achieved in that the existing brokers each consist of one another There are overlapping upper and lower parts connected to one another in a pivot point and for all movement processes every hydraulic hammer - lifting, lowering, pretensioning - and the associated leader - lifting, Lowering, erecting, bending - a single drive motor, preferably a hydraulic motor, is provided, which is arranged in a guide supporting the leader and is connected to the supporting structure via this.

A particularly advantageous embodiment of the subject matter of the invention is that each broker in his The longitudinal extension is enclosed by an endless chain that is guided by means of pulleys and carries the hydraulic pile hammer into which the associated drive motor engages by means of a suitable chain wheel

In a further embodiment of the subject matter of the invention, the hydraulic pile hammer can be interposed be connected by spring elements with the endless chain.

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This elastic connection buffers during pretensioning the hammer blows off the pounding process, thus protecting the drive motor and is used for short-term high Penetration speeds of the pile as a prestressing reservoir.

It is also useful to read the information required to operate the drive motor and the hydraulic pile hammer To arrange the controls separately from the multi-gym

The controls can, for example, be implemented as a portable unit or on a convenient for operation Pointed out · Damaged parts can therefore be removed after the associated control lines have been uncoupled can be exchanged quickly

The drawing shows an exemplary embodiment of the subject matter of the invention shown, namely shows)

Fig. 1 is a view of the hydraulic ramming unit (without support frame, power station and control elements) according to the invention in its starting position,

1a shows another possibility of erecting or kinking the leader and

2 shows a view of the ramming unit with attached underfloor mast ·

Apart from the shoring, power station and control elements, the hydraulic ramming unit consists of the leader d, the leader guide 2 and the hydraulic pile hammer 3 · The

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Mäkler Α., - a hollow box made of suitable metal profiles welded together - is composed of an upper part 1 'and a lower part 1''connected to this via a pivot point 4. In the vertical working position of the leader, the mutually overlapping parts 1 · and 1 ·· are immovably connected to one another by a socket pin 5. The leader, or, depending on the working position, the lower part of the leader or the upper part of the leader are supported in the leader guide 2, which in turn is attached to a supporting frame via connecting parts 6.

On the broker ι are perforated tabs at larger intervals 7 welded on, while holes 8 are arranged in the leader guide 2 at shorter intervals. The mutual Assignment of the tabs and Bohrangeto. allows, -the broker - based on the leader leadership - in different To hold positions

At the lower end of the lower part of the leader 1 ¹ ' ¹ , as well as at the lower and upper end of the upper part of the leader 1', a pulley 9 is arranged in each case. These pulleys serve as a guide for an endless chain 10 which surrounds the leader in its longitudinal extension. The endless Xette serves as a moving and supporting element for the pile hammer 3. This is supported by the hammer guide 3 ^f on the leader

I from and is with the interposition of spring elements

I1 connected to the endless chain. The elastic connection dampens the vibrations emanating from the pile hammer and serves as a pre-tensioning reservoir in the event of brief, high penetration speeds of the pile-driven material 12.

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. The leader guide 2 encloses a hydraulic motor 13 and a gear 14 · with a high reduction in the order of 100 ι 1 is connected upstream. The gear unit engages in the endless chain with a sprocket 10 one and moves this in both directions. The high gear reduction causes the motor to run even at low Ram speeds at a speed sufficient for its lubrication.

A brake, not shown in the drawing, is attached to the gearbox, which automatically opens when there is a certain working pressure in the system. When the hydraulic hammer 3 is switched on, creates a bias through which the pile hammer is pressed onto the pile. This preload is infinitely adjustable.

The broker upper part 1 »carries a stand 15 for the Hose tension pulley 16 ^ With this the supply lines 17 kept under sufficient bias for the pile hammer at all times and upwards removed so that they do not disrupt the workflow

On the lower part of the leader there are 1 ·· in addition to the support of the pile, two pile guides 18 attached

Based on the in Pig. 1 additionally indicated transport position can the leader upper part 1 * by means of of the drive motor 13 is erected via the lever arm between the central deflection roller 9 and the pivot point 4 will. The endless chain 10 is during the straightening up, or kinking of the leader pinned to the upper part of the leader. For safety reasons, the movement controls

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gears when bending and when lowering the leader in an underfloor position is limited in its speed by switching on throttles.

To facilitate erecting or "Abknickvorganges of the leader, the parts 1 and 1 · · 'also have a different (Mg. Ia) can be ₀ Both overlap each other and are connected in a common pivot point 4 with each other.

At the upper end of the lower part of the leader 1 'there is a deflection 9 ¹ . With a corresponding movement of the endless chain 10, which is pinned in this pall on the upper part 1 'of the leader, this enables the leader to be erected or bent

Inserting a socket pin 5 creates a rigid one Carrier.

In the piling unit shown in Fig. 2, the leader is 1 extended by adding an underfloor leader 19. This is connected to the leader 1 via sliding pieces 20 »

The endless chain 10 must be lengthened accordingly and fed via deflecting elements 21, 22 and 23 to the under he f lurmäkler will.

Such a design is used when the full length of the leader above ground is technically necessary, at the same time underfloor but is to be rammed.

The advantages of this invention are in particular that - apart from driving movements of the ramming unit - for

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All motions occurring during operation only is still a simple W _e ise required to be controlled drive motor.

In particular, the leader can by means of the drive motor lowered in the associated guide, b & w. pulled up when the endless chain is attached to the leader «

The upper part of the leader can easily be done without any additional effort and can be quickly kinked or erected. As a result, the hydraulic ramming unit is easy to transport, or to make it ready for use.

By installing the Ptderelemente the effect of the Preload force increased when ramming.

Claims t

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Claims (1)

2117U2 - ίο - Claims ι Hydraulic ramming unit, in particular ramming channel piles and lee profiles, consisting of a supporting frame, one or more power stations arranged on this and one or more vertically erected steel girders, the leaders, which each have a hydraulic pile hammer and the ramming material to be built Serve leadership, characterized in that the existing brokers (1) each consist of a mutually overlapping upper and lower part (1 ¹ or 1 ¹¹ ) connected to one another in a pivot point (4) and each hydraulic system for all movement processes -Raamhammers -loving, lowering, pre-tensioning -and the associated leader - raising, lowering, straightening, bending - a single drive motor (13), preferably a Hy-. draullk motor is provided, which is arranged in a guide (2) supporting the leader (i) and is connected to the supporting structure via this. 2. Hydraulic ramming unit according to claim 1, characterized in that d * a each broker, (1): in ieiner Jiiegeer stretching of a by means of UmlenkrolXen (9 or 9 ^f ) guided, the hydraulic ramming hammer »(3) carrying ladloe- Chain (10) is enclosed, in which the associated drive motor (13) engages by means of a suitable chain wheel. 3, hydraulic unit according to claim 2, characterized in that the hydraulic chain (3) is part of the ladlos chain with intermediate connections (1O) connected let « - 11 -BAD ORIGINAL 2Q98U / 0029 . 2117U2 4. Hydraulic ramming unit according to claim 1, characterized in that that the controls required to operate the drive motor (13) and the hydraulic hammer (3) are arranged separately from the power station. 209844/0029