Hoist driven by the transfer gearbox of a vehicle

• US 6,299,140 B1
• Filed: 05/13/1999
• Issued: 10/09/2001
• Est. Priority Date: 11/19/1996
• Status: Expired due to Fees

• Current Assignee: Alexandr Konstantinovich Kamljuk
• Original Assignee: Alexandr Konstantinovich Kamljuk
• Inventors: Kamljuk, Alexandr Konstantinovich
• Primary Examiner(s): MARCELO, EMMANUEL MONSAYAC
• Application Number:
  US09/310,923
• Time in Patent Office: 880 Days
• Field of Search: 254/328, 254/343, 254/344
• US Class Current: 254/328
• CPC Class Codes: B66D 1/16 the drums or barrels being freely rotatable , e.g. having a clutch activated independently of a brake B66D1/20, B66D1/22, B66D1/24 take precedence; clutches activated alternately with brakes B66D1/14, slip couplings B66D1/14
• CPC Class Codes: B66D 1/22 Planetary or differential gearings for actuating grab buckets B66D1/70 , i.e. with planet gears having movable axes of rotation
• CPC Class Codes: B66D 5/24 Operating devices

Abstract

Traction and traction-loading hoists which are mounted on vehicles for improving their progression capability, for helping other vehicles which are blocked, for dragging loads onto the platforms of vehicles as well as for lifting or lowering loads. The hoist of the present invention comprises the following members mounted on two supports: a winding drum, a winding drum switching mechanism that disconnects the drum for unwinding more rapidly the hoist cable, a reduction gear which is in the shape of one conical and one planetary gears connected by a linking shaft and has a lower reduction ratio than that of the current ones; and a mechanism for stopping the winding drum which is made in the shape of a toothed free-wheel clutch. In order to lower a load which has been previously lifted, the hoist comprises a brake system usually connected to an energy accumulator. In order to increase the braking action, the hoist may also include a braking chamber having its control connected to the clutch control of the vehicle. The potential yield of this hoist is higher than that of similar devices.

Claims

1. A hoist driven by a transfer gearbox of a vehicle comprising:

a winding drum mounted on a support;

a reduction gear including a winding-drum-stopping mechanism with a toothed-free-wheeling clutch connected to a linking shaft for allowing the winding drum to rotate in a pulling direction, and with the toothed-free-wheeling clutch for preventing the winding drum from rotating in a reverse direction with respect to the pulling direction, with the reduction gear a form of a toothed gear with the toothed-free-wheeling clutch having two counter sprung half-clutches with butt-end forced and wedged teeth, one of the half-clutches having an extended forced tooth and the other of the half-clutches having a locking ring with a slot and butt-end wedged teeth, the extended forced tooth entering into the slot of the locking ring, on the half-clutches the wedged teeth including rotated shift by half of the extended forced tooth width and with a high-power brake mounted on the external side of the reduction gear and connected sequentially with the toothed-free-wheeling clutch; and

a winding-drum-switching mechanism.

2. The hoist according to claim 1, with the winding-drum-switching mechanism having a sprung sun gear mounted on the linking shaft and connected with an air cylinder fixed on a hoist support.

3. The hoist according to claim 2, with a brake mounted between the support and an additional shaft of the toothed-free-wheeling clutch, with the brake normally switched on by an energy accumulator and equipped with a braking chamber and a braking chamber control.

4. The hoist according to claim 2, with a braking chamber control connected with a clutch control of the vehicle by a two-circuit valve.

5. The hoist according to claim 1, with a brake normally switched on by an energy accumulator and equipped with a braking chamber and a braking chamber control.

6. The hoist according to claim 5, with the control for the braking chamber connected with a clutch control of the vehicle by a two-circuit valve.

7. The hoist according to claim 1, with a braking chamber control connected with a clutch control of the vehicle by a two-circuit valve.

11. The hoist as set forth in claim 1, with said reduction gear having a conical gear, a linking shaft and a planetary gear, with the conical gear connected by the linking shaft to the planetary gear, said reduction gear including the winding-drum-stopping mechanism with a toothed-free-wheeling clutch connected to the linking shaft for allowing the winding drum to rotate in a pulling direction, and with the toothed-free-wheeling clutch for preventing the winding drum from rotating in a reverse direction with respect to the pulling direction.

8. A hoist comprising:

an input shaft;

a motor-transmission unit between the input shaft and a motor;

a winding drum mounted on a support;

a reduction gear having a gear with a low transmission ratio and a high efficiency;

a winding-drum-switching mechanism mounted between the input shaft and the winding drum, for disconnecting the winding drum when unwinding;

a winding drum stopping mechanism having a self-latching toothed-free-wheeling clutch connecting the winding drum to the support with the toothed-free-wheeling clutch connected to the linking shaft for allowing the winding drum to rotate in a pulling direction, and with the toothed-free-wheeling clutch for preventing the winding drum from rotating in a reverse direction with respect to the pulling direction; and

a power take-off shaft of the transmission output shaft, connected to the input shaft of the hoist.

9. The hoist as set forth in claim 8, with said reduction gear having a conical gear, a linking shaft and a planetary gear, with the conical gear connected by the linking shaft to the planetary gear, said reduction gear including the winding-drum-stopping mechanism with a toothed-free-wheeling clutch connected to the linking shaft for allowing the winding drum to rotate in a pulling direction, and with the toothed-free-wheeling clutch for preventing the winding drum from rotating in a reverse direction with respect to the pulling direction.

10. A hoist comprising:

an input shaft;

a winding drum mounted on two supports;

a reduction gear having gears with a low ratio and a high efficiency, the reduction gear including a conical gear connected by a linking shaft to a planetary gear;

a winding-drum-switching mechanism mounted sequentially between the input shaft and the winding drum;

a winding-drum-stopping mechanism having a self-latching toothed-free-wheeling clutch and a normally switched-on brake sequentially counted between one of the shafts, for transferring the torque to the winding drum and one of the two supports; and

a power take-off shaft connected to the input shaft of the hoist.

12. The hoist as set forth in claim 10, with said reduction gear having a conical gear, a linking shaft and a planetary gear, with the conical gear connected by the linking shaft to the planetary gear, said reduction gear including the winding-drum-stopping mechanism with a toothed-free-wheeling clutch connected to the linking shaft for allowing the winding drum to rotate in a pulling direction, and with the toothed-free-wheeling clutch for preventing the winding drum from rotating in a reverse direction with respect to the pulling direction.