Coil-oscillator vibration unit for rail workhead

Patent metadata

Field	Value
Publication number	US-10008914-B2
Application number	US-201615211769-A
Country	US
Kind code	B2
Filing date	Jul 15, 2016
Priority date	Jul 16, 2015
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A rail maintenance vehicle includes a frame, a workhead, and a vibrating unit. The frame includes wheels that travel along rails. The vibrating unit is coupled to the workhead and includes a rotor, a stator, a first rotor coil coupled to the rotor and a first stator coil coupled to the stator.

First claim

The invention claimed is:

1. A rail maintenance vehicle, comprising:
a frame having wheels that travel along rails;
a workhead;
a vibrating unit coupled to the workhead, the vibrating unit including a rotor, a stator, a first rotor coil and a second rotor coil coupled to the rotor and a first stator coil and a second stator coil coupled to the stator; wherein
the first rotor coil is disposed at a first side of a shaft coupled to the rotor,
the second rotor coil is disposed at a second, opposing side of the shaft,
the first rotor coil is disposed proximal to the first stator coil, and
the second rotor coil is disposed proximal to the second stator coil.

2. The rail maintenance vehicle of claim 1 , further comprising a flexible conductor coupled between the first rotor coil and the first stator coil.

3. The rail maintenance vehicle of claim 1 , wherein the rotor includes a concave pole face.

4. The rail maintenance vehicle of claim 3 , wherein the stator includes a convex pole face.

5. The rail maintenance vehicle of claim 4 , wherein the concave pole face of the rotor is disposed adjacent the convex pole face of the stator.

6. The rail maintenance vehicle of claim 1 , further comprising a controller operable to alternatingly cause the first rotor coil and the first stator coil to have a same polarity and the second rotor coil and the second stator coil to have a same polarity.

7. The rail maintenance vehicle of claim 1 , further comprising a controller operable to alternatingly cause the first rotor coil and the first stator coil to have opposite polarity and the second rotor coil and the second stator coil to have opposite polarity.

8. The rail maintenance vehicle of claim 1 , further comprising a controller that includes a first half wave rectifier coupled to the first rotor coil and the first stator coil.

9. The rail maintenance vehicle of claim 8 , wherein the controller includes a second half wave rectifier coupled to the second rotor coil and the second stator coil.

10. The rail maintenance vehicle of claim 1 , further comprising a controller operable to vary at least one of a frequency, voltage and current supplied to at least one of the first rotor coil, the second rotor coil, the first stator coil and the second stator coil.

11. The rail maintenance vehicle of claim 1 , wherein the workhead includes a tamper.

12. A vibration unit, comprising:
a rotor;
a stator;
a first rotor coil coupled to the rotor;
a second rotor coil coupled to the rotor;
a first stator coil coupled to the stator and proximal to the first rotor coil;
a second stator coil coupled to the stator and proximal to the second rotor coil; and
a controller operable to alternatingly cause the first rotor coil and the first stator coil to have a first state and the second rotor coil and the second stator coil to have a second state.

13. The vibration unit of claim 12 , wherein the controller is operable to cause the first rotor coil and the first stator coil to have the second state when the second rotor coil and the second stator coil have the first state.

14. The vibration unit of claim 13 , wherein the first state is a same polarity.

15. The vibration unit of claim 13 , wherein the second state is an opposite polarity.

16. The vibration unit of claim 12 , further comprising a first flexible conductor coupled between the first rotor coil and the first stator coil, and a second flexible conductor coupled between the second rotor coil and the second stator coil.

17. The vibration unit of claim 12 , wherein
the rotor includes a concave pole face,
the stator includes a convex pole face, and
the concave pole face of the rotor is disposed adjacent the convex pole face of the stator.

18. The vibration unit of claim 12 , wherein the controller includes:
a first half wave rectifier coupled to the first rotor coil and the first stator coil, and
a second half wave rectifier coupled to second rotor coil and the second stator coil.

19. The vibration unit of claim 12 , wherein the controller is operable to vary at least one of a frequency, voltage and current supplied to at least one of the first rotor coil, the second rotor coil, the first stator coil and the second stator coil.

Assignees

• Harsco Technologies LLC

Inventors

• Sami Reza
• Koon Kendall

Classifications

• B06B1/045

  using vibrating magnet, armature or coil system · CPC title

• H02K33/00 Primary

  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

• E01B27/16

  Sleeper-tamping machines · CPC title

• H02K33/12 Primary

  with armatures moving in alternate directions by alternate energisation of two coil systems · CPC title

• H02K11/30

  Structural association with control circuits or drive circuits · CPC title