Drive device for belt axis of a winch

• US 9,010,732 B2
• Filed: 01/18/2013
• Issued: 04/21/2015
• Est. Priority Date: 09/26/2012
• Status: Active Grant

• Current Assignee: Zhejiang Topsun Logistics Control Company Limited (Zhejiang Topsun Group Company Limited)
• Original Assignee: Zhejiang Topsun Logistics Control Company Limited (Zhejiang Topsun Group Company Limited)
• Inventors: Zhu, ZhengZhong
• Primary Examiner(s): MARCELO, EMMANUEL MONSAYAC
• Application Number:
  US13/744,425
• Publication Number:
  US 20140082903A1
• Time in Patent Office: 823 Days
• Field of Search: 254/214, 254/223, 254/217, 254/218, 24/70.R, 24/70.ST, 24/69.ST, 24/69.CT, 24/68.CD, 410/103
• US Class Current: 254/223
• CPC Class Codes: B60P 7/083 Tensioning by repetetive movement of an actuating member
• CPC Class Codes: B60P 7/0853 Tools for manipulating straps or tighteners
• CPC Class Codes: Y10T 24/2113 Strap tighteners
• CPC Class Codes: Y10T 24/2117 Strap tighteners
• CPC Class Codes: Y10T 24/2121 Cargo tie down
• CPC Class Codes: Y10T 24/2191 Strap stretching tools, tighteners, and sealers

Abstract

A drive device for a belt axis of a winch, to address the problems existing in the conventional drive device for the belt axis of the winch including a short service life and a high cost. The drive device is disposed at the end of the belt axis of the winch. The drive device comprises a stationary seat and a rotary cylinder. The rotary cylinder is provided with a socket for inserting a crowbar. The stationary seat is fixedly connected with the belt axis. The rotary cylinder is axially fixed to the stationary seat. A unidirectional mechanism is provided between the rotary cylinder and the belt axis and operates by means of the engagement of teeth of the ratchet wheel. The belt axis is brought into continuous one-way rotation by using the unidirectional mechanism while the rotary cylinder is turned back and forth.

Claims

1. A drive device for a belt axis of a winch disposed at one end of the belt axis (1) of the winch, comprising:

a stationary seat (12) fixedly connected with the belt axis (1) of the winch, both the stationary seat (12) and the belt axis (1) being cylindrical;

a rotary cylinder (2) with a socket (2b) for inserting a crowbar, the rotary cylinder (2) is fixed to the stationary seat (12) and has a central axis overlapping with that of the stationary seat (12); and

a unidirectional mechanism provided between the rotary cylinder (2) and the belt axis (1), the unidirectional mechanism operating by engagement of teeth of a ratchet wheel (9) and the belt axis (1) is brought into continuous one-way rotation by using the unidirectional mechanism while the rotary cylinder (2) is turned back and forth;

wherein the unidirectional mechanism includes pawls (8) hinged to the stationary seat (12) and a ratchet wheel (9) fixedly connected with an end of the rotary cylinder (2), in which the pawls (8) are engaged with the ratchet wheel (9), the stationary seat (12) has a chassis (3) in the shape of a round disk and a circular compression ring (4), the chassis (3) is fixedly connected to an end of the belt axis (1), the compression ring (4) is fixedly connected to the chassis (3) via connecting pins (7), and the pawls (8) are hinged between the compression ring (4) and the chassis (3) by the connecting pins (7).

2. The drive device for a belt axis of a winch as claimed in claim 1, characterized in that, springs (13) are covered on the connecting pins (7), ends of the springs (13) are pressed against the compression ring (4) and the pawls (8) respectively, and the pawls (8) tend to be engaged with the ratchet wheel (9) by means of the elastic force of the springs (13).

3. The drive device for a belt axis of a winch as claimed in claim 2, characterized in that, the rotary cylinder (2) has a projecting stop edge (2a) at an inner end, the stop edge (2a) is disposed between the compression ring (4) and the pawls (8) and the pawls (8) are located between the compression ring (4) and the chassis (3).

4. The drive device for a belt axis of a winch as claimed in claim 3, characterized in that, an annular retainer (5) is provided between an edge of the chassis (3) and an edge of the compression ring (4).

5. The drive device for a belt axis of a winch as claimed in claim 4, characterized in that, an inner side of the retainer (5) is fixedly connected with a plurality of supporting posts (6), and ends of the supporting posts (6) are pressed against the chassis (3) and the compression ring (4) respectively.

6. The drive device for a belt axis of a winch as claimed in claim 5, characterized in that, the retainer (5) has a cylindrical supporting seat (5a) integrally connected therewith on the inner side of the retainer (5), and the supporting posts (6) are connected with the supporting seat (5a).

7. The drive device for a belt axis of a winch as claimed in claim 6, characterized in that, the retainer (5) and the supporting seat (5a) are both made of plastic materials and the supporting seat (5a) has a gap (5a) extending therethrough on its side.

8. The drive device for a belt axis of a winch as claimed in claim 3, characterized in that, the chassis (3) is fixedly connected with the end of the belt axis (1) by welding.

9. The drive device for a belt axis of a winch as claimed in claim 5, characterized in that, the ratchet wheel (9) is fixedly connected with the end of the rotary cylinder (2) by welding.

10. The drive device for a belt axis of a winch as claimed in claim 2, characterized in that, the chassis (3) is fixedly connected with the end of the belt axis (1) by welding.

11. The drive device for a belt axis of a winch as claimed in claim 2, characterized in that, the ratchet wheel (9) is fixedly connected with the end of the rotary cylinder (2) by welding.

12. The drive device for a belt axis of a winch as claimed in claim 1, characterized in that, the chassis (3) is fixedly connected with the end of the belt axis (1) by welding.