WO2011003427A1

WO2011003427A1 - Tamping pick for a tamping machine for tamping a track

Info

Publication number: WO2011003427A1
Application number: PCT/EP2009/004840
Authority: WO
Inventors: Hansjörg HOFER
Original assignee: Franz Plasser Bahnbaumaschinen-Industriegesellschaft Mbh
Priority date: 2009-07-04
Filing date: 2009-07-04
Publication date: 2011-01-13
Also published as: EP2452016B1; EP2452016A1; PL2452016T3; ES2413355T3

Abstract

The invention relates to a tamping pick (5), comprising a shaft expansion (10) at a lower end (9) of a pick shaft (6). Said shaft expansion is equipped with an outer diameter that is greater than the diameter of the pick shaft (6) and a stop surface (12) that is provided for resting on the tamping lever (4) of your tamping unit and that extends perpendicular to the longitudinal axis (11). Thus, any bending forces acting on the tamping pick (5) are transmitted to the tamping lever (4).

Description

Tamping pick for a tamping machine for stuffing a

Track.

The invention relates to a tamping pick for a stuffing machine for undercutting a track, consisting of a provided at an upper end for insertion into a stuffing lever of a tamping unit, a diameter and a longitudinal axis having a pike shank, a positioned at a lower end pick plate and an intermediate Pickelschaft and Pickelplatte located Pickelarm.

Such a stuffing pommel is already known by GB2201708 (A). The picking shaft is inserted into an opening of the stuffing lever and connected thereto by a screw connection. In particular, in the context of a continuous right of way of a tamping machine during the labor input, it may happen that the tamping knives are exposed in the machine longitudinal direction of increased bending load. This often leads to breakage of the stuffing plug in the transition region between the picking shaft and the picking arm.

The object of the present invention is now in the creation of a stuffing pot of the type mentioned, with optimized strength.

[0004] According to the invention, this object is achieved with a tamping pick of the generic type in that, at a lower end of the picking shaft, a shaft extension with a the pimpling shaft larger outside diameter and a provided for abutment with the stuffing lever of the tamping unit, extending normal to the longitudinal axis stop surface is attached.

With this stop surface of the fuselage extension, it is possible to transfer bending forces on the massive pimple and largely rule out a breakage of the stuffing peg. As a result of the enlarged contact surface with the Pickelarm a more stable fixation is possible, which precludes a micro-movement of the Pickelschaftes in Pickelarm.

Of particular advantage is also the ability to perform such a quality improvement with only minimal effort in already in use stuffed pigs can.

Further advantages of the invention will become apparent from the dependent claims and the drawing description.

In the following the invention will be described with reference to embodiments illustrated in the drawings. Show it:

Fig. 1 is a side view of a tamping machine shown in simplified form, Fig. 2 is an enlarged side view of two stuffing tongs, and Fig. 3 to 5 further detail views.

An apparent in Fig. 1 tamping machine 1 is movable on a track 2 and equipped with a height-adjustable tamping unit 3. This has pivotable tamping lever 4, which are releasably connected with stuffing toppers 5 for Unterstopfen the track 2. As can be seen in Fig. 2, the tamping pick 5 is composed of a pimpling shaft 6, a subsequent to this Pickelarm 7 and a pimple plate 8 connected thereto. At a lower end 9 of the picking shaft 6 (see also Fig. 3) is attached to a Schießweiterung 10 with a larger diameter compared to a diameter d of the pick shaft 6 outer diameter ad. This Schießweiterung 10 has a provided for contact with the stuffing lever 4 of the Stopfaggregates 3, normal to a longitudinal axis 11 of the pick shank 6 extending stop surface 12 (in Fig. 2, the left stuffing 5 is shown for comparison without Schießweiterung 10).

As shown in FIGS. 2 to 4, the Schießenweiterung 10 is formed as a support ring 13 with a bore 14 for receiving the pickle shaft 6. As a result, the bore 14 has an inner diameter id corresponding to the diameter d of the picking shaft 6. A difference between outer and inner diameter (ad, id) of the support ring 13 corresponds to about 20 to 30% of the diameter d of the pick shaft 6.

As can be seen in Fig. 3, an adjacent to the Pickelschaft 6 lower portion 15 of the support ring 13 in the direction of the Pickelarm 7 continuously increasing inner diameter id. As a result, the support ring 13 rests on the counter-shaped lower end 9 of the pick shaft 6. The support ring 13 is non-positively connected by heating and shrinking with the pickle shaft 6. The support ring 13 has two - with respect to the bore 14 - diametrically opposed threaded holes 17 for receiving screws 18. Their screw heads 19 opposite screw ends 20 are each provided for engagement with the Stopfhebeln 4.

After fixation of the support ring 13 on the pick shank 6 of this is inserted into an opening of the stuffing lever 4 until the stop surface 12 of the support ring 13 abuts the stuffing lever 4 (Fig. 2).

By tightening a screw 21, a corresponding bias for a whopping conditioning of the support ring 13 and a firm connection of the stuffing 5 is achieved with the tamping 4.

By tightening the two screws 18 - and release the

Screw 21 - can be pulled out of the stuffing lever 4 simplifies the pickup 6.

In the apparent in Fig. 5 variant of the invention, the

Schießweiterung 10 to form the stop surface 12 already formed during the formation or production of the stuffing 5.

Claims

Patent claims

1. tamping punch (5) for a tamping machine for plugging a track (2), consisting of a at an upper end for insertion into a stuffing lever (4) of a tamping unit (3) provided, a diameter (d) and a longitudinal axis (11) having a pimpling shaft (6), a pick plate (8) positioned at a lower end and a pick arm (7) located between the pick shaft (6) and pick plate (8), characterized in that at a lower end (9) of the pick shaft (6) a fuselage extension (10) having a larger outer diameter (ad) compared to the diameter (d) of the picking shaft (6) and a stop surface (10) of the tamping unit (3) provided for abutment with the tamping lever (4) and normal to the longitudinal axis (11). 12) is attached.

2. tufting implement according to claim 1, characterized in that the Schießweiterung (10) is designed as a support ring (13) having a diameter (d) of the Pickelschaftes (6) corresponding inner diameter (id) and compared to this larger outer diameter ( ad).

3. tamping pick according to claim 2, characterized in that a to the Pickelschaft (6) adjacent lower portion (15) of the support ring (13) in the direction of the Pickelarm (7) continuously increasing inner diameter (id).

4. tamping pick according to claim 2 or 3, characterized in that the support ring (13) has two diametrically opposed threaded bores (17) for receiving screws (18) whose screw heads (19) opposite screw ends (20) each for engagement with the Stuffing lever (4) are provided.

5. Tamping pick according to one of claims 2 to 5, characterized in that a difference between outside and inside Nendurchmesser (ad, id) of the support ring (13) corresponds to about 20 to 30% of the diameter (d) of the Pickelschaftes (6).

6. Tamping pick according to one of claims 2 to 5, characterized in that the support ring (13) by means of heating and shrink fitting is frictionally connected to the pickle shaft (6).