Swing Bolt Construction with Locking

• US 20080289465A1
• Filed: 02/20/2006
• Published: 11/27/2008
• Est. Priority Date: 02/18/2005
• Status: Active Grant

• Current Assignee: N.V. Holmatro
• Original Assignee: N.V. Holmatro
• Inventors: Bruurs, Antonius Johannes Henricus
• Granted Patent: US 8,122,797 B2
• Time in Patent Office: Days
• US Class Current: 83/13
• CPC Class Codes: B23D 17/00 Shearing machines or shearing devices cutting by blades pivoted on a single axis on an axis parallel to the blade B23D15/10; hand-held devices B23D29/00
• CPC Class Codes: B23D 29/00 Hand-held metal-shearing or metal-cutting devices with nibbling action B23D27/02; hand-operated devices for metal-cutting otherwise than by shearing B26B
• CPC Class Codes: B23D 31/008 Cutting-up scrap disintegrating by knives in general B02C18/00; cutting-up scrap while the material is travelling otherwise than in the direction of the cut B23D25/14
• CPC Class Codes: Y10T 83/04 Processes
• CPC Class Codes: Y10T 83/8858 Fluid pressure actuated
• CPC Class Codes: Y10T 83/9447 Shear type

Abstract

An embodiment of the present invention relates to a tool for clamping together pivotable parts under bias relative to each other, using a swing bolt construction for mounting the pivotable parts on a fork of a holder, the swing bolt construction including: a swing bolt with a widened part provided on a first outer end and provided on the other outer end with first fastening device; a nut provided with second fastening device for fastening the nut to the first fastening device on said other end of the swing bolt; wherein the widened part of the swing bolt and the nut are embodied so as to lie during use against the pivotable parts for clamping thereof under the required bias.

Claims

1. Tool for clamping together pivotable parts under bias relative to each other, comprising:

a holder provided with a fork, wherein each of the outer ends of the fork is provided with an opening;

two pivotable parts, mountable between the ends of the fork and provided with openings at the position of their pivot point; and

a swing bolt construction to be arranged in the openings in the fork and the pivotable parts for the purpose of mounting the pivotable parts on the fork of the holder, the swing bolt construction comprising;

a swing bolt with a widened part provided on a first outer end and provided on the other outer end with a first fastening device, and

a nut provided with a second fastener for fastening the nut to the first fastening device on said other end of the swing bolt,

wherein the widened part of the swing bolt and the nut are embodied so as to lie during use against the pivotable parts for clamping thereof under the required bias.

2. Tool as claimed in claim 1, wherein the widened part of the swing bolt and the nut lie during use directly against the sides of the pivotable parts directed toward the fork outer ends.

3. Tool as claimed in claim 1, wherein the first and second fastening means devices respectively comprise an internal and an external screw thread.

4. Tool as claimed in claim 1, wherein at least one of the widened part of the swing bolt and the nut comprises an at least partly straight part for forming a straight contact surface on the pivotable parts.

5. Tool as claimed in claim 1, wherein at least one of the widened part of the swing bolt and the nut comprises an at least partly conical part for forming an oblique contact surface on the pivotable parts.

6. Tool as claimed in claim 1, wherein the swing bolt comprises a swing bolt head, at least a part of which has a non-cylindrical external shape, which shape fits non-rotatably in the associated opening in the fork of the holder.

7. Tool as claimed in claim 1, wherein the pivotable parts comprise an at least partially conical part on their sides directed toward the fork outer ends.

8. Tool as claimed in claim 5, wherein the respective conical parts correspond with each other such that an oblique contact surface is provided between the swing bolt construction and the pivotable parts.

9. Tool as claimed in claim 1, comprising locking means for locking the swing bolt construction, wherein the locking means are arranged in the swing bolt construction.

10. Tool as claimed in claim 1, comprising locking means for locking the nut of the swing bolt construction, the locking means comprising:

a protruding part arranged on the outer end of the swing bolt provided with a fastening device;

a first locking ring, non-rotatably fastenable to the protruding part of the swing bolt, the locking ring being provided with an external toothing; and

a second locking ring, non-rotatably fastenable to the nut and placed between the nut and the first locking ring, provided with an internal toothing which is engageable on the external toothing of the first locking ring.

11. Tool as claimed in claim 10, wherein the toothings are embodied to enable locking of the nut relative to the swing bolt with relatively small angular displacement steps.

12. Tool as claimed in claim 10, wherein the second locking ring is adapted to enable fastening to the nut in a number of rotation positions.

13. Tool as claimed in claim 12, wherein the number (N) of teeth of the first and second locking ring equals k plus a multiple of said number of rotation positions (X2), with k a whole number and −

X2/2<

k<

+X2/2.

14. Tool as claimed in claim 13, wherein the number (N) of teeth equals k plus a multiple of X2, wherein k is a whole number and −

X2/2<

k<

+X2/2.

15. Tool as claimed in claim 13, wherein the play (S degrees) in the locking device is greater than or equal to 360/(k*N*X2) degrees.

16. Tool as claimed in claim 10, wherein the second locking ring comprises at least one protrusion which protrudes from the nut in the assembled position.

17. Tool as claimed in claim 10, wherein the protruding part is formed such that it fits into one or more corresponding internal recesses which are provided in the first locking ring for non-rotatable fastening of the first locking ring to the swing bolt.

18. Tool as claimed in claim 10, wherein the nut is provided with a row of recesses into which external projections provided on the second locking ring can engage to enable non-rotatable fastening of the second locking ring to the nut in a predetermined number of positions.

19. Tool as claimed in claim 18, wherein the projections are provided on the peripheral surface of the second locking ring, and the recesses are provided in the peripheral edge of the nut, wherein the projections protrude outside the nut in the assembled position.

20. Tool as claimed in claim 1, wherein cover elements can be placed over the openings in the outer ends of the fork.

21. Tool as claimed in claim 20, wherein the outer ends of the swing bolt are provided with fastening means for fastening the cover elements during use to the respective outer ends of the swing bolt.

22. Tool as claimed in claim 1, wherein at least one hydraulic drive device is provided in the holder, mounted on the pivotable parts to bring about movement of said pivotable parts.

23. Tool as claimed in claim 1, wherein the tool is a pair of hydraulic shears, the pivoting parts of which are formed by shear blades.

24. Tool as claimed in claim 1, wherein the tool is a hydraulic spreader, the pivotable parts of which are formed by spreader elements.

35. A method, comprising:

using the tool as claimed in claim 1.

25. Swing bolt construction with integrated locking, comprising:

a swing bolt;

a protruding part provided on the end surface of an outer end of the swing bolt;

a nut, fastenable to said outer end of the swing bolt;

a first locking ring, non-rotatably mountable on the protruding part of the swing bolt, provided with external toothing;

a second locking ring, non-rotatably mountable on the nut and placed between the nut and the first locking ring, provided with an internal toothing, engageable on the external toothing of the first locking ring.

26. Swing bolt construction as claimed in claim 25, wherein the toothings are embodied to enable locking of the nut relative to the swing bolt with relatively small angular displacement steps.

27. Swing bolt construction as claimed in claim 26, wherein the second locking ring is adapted to enable fastening to the nut in a number of rotation positions.

28. Swing bolt construction as claimed in claim 25, wherein the number (N) of teeth of the first and second locking ring equals k plus a multiple of said number of rotation positions (X2), wherein k is a whole number and −

X2/2<

k<

+X2/2.

29. Swing bolt construction as claimed in claim 28, wherein the number (N) of teeth equals 1 plus a multiple of X2 or −

1 plus a multiple of X2.

30. Swing bolt construction as claimed in claim 25, wherein play (S degrees) in at least one of the first and second locking rings is greater than or equal to 360/(k*N*X2) degrees.

31. Swing bolt construction as claimed in claim 25, wherein the second locking ring comprises at least one protruding part which protrudes from the nut in the assembled position.

32. Swing bolt construction as claimed in claim 25, wherein the protruding part of the swing bolt is formed such that it fits into one or more corresponding internal recesses which are provided in the first locking ring for non-rotatable fastening of the first locking ring to the swing bolt

33. Swing bolt construction as claimed in claim 25, wherein the nut is provided with a row of recesses into which external projections provided on the second locking ring are engageable to enable non-rotatable fastening of the second locking ring to the nut in a predetermined number of positions.

34. Swing bolt construction as claimed in claim 33, wherein the projections are provided on the peripheral surface of the second locking ring, and the recesses are provided in the peripheral edge of the nut, wherein the projections protrude outside the nut in the assembled position.