Tamping assembly for tamping sleepers of a track

Patent metadata

Field	Value
Publication number	US-11566381-B2
Application number	US-201816763131-A
Country	US
Kind code	B2
Filing date	Nov 21, 2018
Priority date	Dec 21, 2017
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The invention relates to a tamping assembly for tamping sleepers (2) of a track (3), comprising a tamping unit (1) having a lowerable tool carrier (4) and oppositely positioned tamping tools (5), wherein each tamping tool (5) is connected via a pivot arm (6) to a squeezing drive (7) for generating a squeezing motion, and wherein a vibration drive (8) is provided for actuation of the tamping tools (5) with a vibratory motion. In this, it is provided that the vibration drive (8) comprises an electromagnetic actuator (11).

First claim

The invention claimed is:

1. A tamping assembly for tamping sleepers of a track, the tamping assembly comprising:
a tamping unit having a lowerable tool carrier and tamping tools positioned opposite one another;
a squeezing drive for generating a squeezing motion, and pivot arms respectively connecting each of said tamping tools to said squeezing drive;
a vibration drive for actuation of said tamping tools with a vibratory motion, said vibration drive being connected to said squeezing drive and to said tool carrier, and said vibration drive including an electromagnetic actuator; and
said electromagnetic actuator including an anchor, an electromagnet with a magnetic yoke, and a solenoid.

2. The tamping assembly according to claim 1 , wherein said anchor is connected to a shaft, and said shaft is guided through a casing orifice by way of a slide sleeve.

3. The tamping assembly according to claim 2 , wherein said casing is closed except for passages, and only a single said anchor is movably arranged in said casing, and said anchor is coupled to at least one squeezing drive.

4. The tamping assembly according to claim 3 , which comprises a spring disposed inside said casing and configured to press said anchor against a cover of said casing.

5. The tamping assembly according to claim 4 , wherein said cover is mounted within said casing adjustably in an oscillation direction.

6. The tamping assembly according to claim 3 , wherein said electromagnetic actuator comprises two magnetic bodies and two solenoids, and said anchor is arranged for movement relative to said magnetic bodies and said solenoids.

7. The tamping assembly according to claim 3 , wherein said squeezing drive is one of two squeezing drives, and said anchor is coupled to both said squeezing drives.

8. The tamping assembly according to claim 2 , wherein said anchor is one of two anchors movably arranged inside a casing which is closed apart from passages, and wherein each of said anchors is coupled to one of said two squeezing drives.

9. The tamping assembly according to claim 8 , which comprises a spring respectively associated with each of said anchors and disposed to press the respective said anchor against a partition in said casing.

10. The tamping assembly according to claim 1 , wherein said vibration drive comprises a casing and said casing is formed with cooling channels for cooling said vibration drive with a liquid cooling medium.

11. The tamping assembly according to claim 1 , wherein said vibration drive is coupled to said tool carrier and to said squeezing drives by way of non-destructively detachable connections.

12. A tamping assembly for tamping sleepers of a track, the tamping assembly comprising:
a tamping unit having a lowerable tool carrier and tamping tools positioned opposite one another;
a squeezing drive for generating a squeezing motion, and pivot arms respectively connecting each of said tamping tools to said squeezing drive;
a vibration drive for actuation of said tamping tools with a vibratory motion, said vibration drive including an electromagnetic actuator;
said electromagnetic actuator including an anchor connected to a shaft, and said shaft being guided through a casing orifice by way of a slide sleeve;
said casing being closed except for passages, and only a single said anchor being movably arranged in said casing, and said anchor being coupled to at least one squeezing drive; and
a spring disposed inside said casing and configured to press said anchor against a cover of said casing.

13. A tamping assembly for tamping sleepers of a track, the tamping assembly comprising:
a tamping unit having a lowerable tool carrier and tamping tools positioned opposite one another;
two squeezing drives for generating a squeezing motion, and pivot arms respectively connecting each of said tamping tools to said squeezing drives; and
a vibration drive for actuation of said tamping tools with a vibratory motion, said vibration drive including an electromagnetic actuator;
said electromagnetic actuator including an anchor connected to a shaft, and said shaft being guided through a casing orifice by way of a slide sleeve;
said casing being closed except for passages, and only a single said anchor being movably arranged in said casing; and
said anchor being coupled to both said squeezing drives.

Assignees

• Plasser & Theurer Export Von Bahnbaumaschinen Gmbh

Inventors

• Stoff Silvio
• Wollanek Samuel

Classifications

• E01B2203/12

  Tamping devices · CPC title

• E01B27/16 Primary

  Sleeper-tamping machines · CPC title

• H01F2007/1684

  Armature position measurement using coils · CPC title

• H02K33/02

  with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs · CPC title

• H02K33/00

  Motors with reciprocating, oscillating or vibrating magnet, armature or coil system (arrangements for handling mechanical energy structurally associated with motors H02K7/00, e.g. H02K7/06) · CPC title