Towing hook

Patent metadata

Field	Value
Publication number	US-11364752-B2
Application number	US-201816622501-A
Country	US
Kind code	B2
Filing date	Jun 14, 2018
Priority date	Jun 15, 2017
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A towing hook arranged on a mining machine, with a first end having a bent portion to allow a towing tool to be connected and a second end having a cylindrical rod. An intermediate part is located between the first and the second end. The towing hook is arranged to be mounted in a through hole in a frame of a machine in order for the first and second ends to be positioned on different sides of the machine frame. The intermediate part is mounted partly in the through hole of the frame, and wherein the longitudinal axis of the cylindrical rod is generally parallel with a longitudinal axis defined through the towing hook representing the force transmitting direction when connecting the towing tool to the bent portion.

First claim

The invention claimed is:

1. A towing hook arranged on a mining machine, the towing hook comprising:
a first end having a bent portion arranged to allow a towing tool to be connected;
a second end having a cylindrical rod with a longitudinal axis; and
an intermediate part located between the first and the second ends, wherein the towing hook is arranged to be mounted in a through hole in a frame of a machine such that the first and second ends are positioned on different sides of the machine frame and the intermediate part is mounted partly in the through hole of the frame, and wherein the longitudinal axis of the cylindrical rod is generally parallel with a longitudinal axis defined through the towing hook representing a force transmitting direction when connecting the towing tool to the bent portion.

2. The hook according to claim 1 , wherein the cylindrical rod is connected to a tube extending along the longitudinal axis of the cylindrical rod.

3. The hook according to claim 2 , wherein the tube is connected to a brake system of the machine.

4. The hook according to claim 1 , wherein the intermediate part of the hook is mounted freely in the through hole of the machine frame to allow the hook to be moved in relation to the frame.

5. The hook according to claim 1 , wherein the hook includes a first stopper element and a second stopper element.

6. The hook according to claim 5 , wherein the first stopper element is mounted at the first end of the hook.

7. The hook according to claim 5 , wherein the first stopper element is a pin with an axis perpendicular to a surface of the first end of the hook and the axis being parallel to a surface of the machine frame.

8. The hook according to claim 5 , wherein the first stopper element is a shoulder located at the first end of the hook toward the intermediate part.

9. The hook according to claim 5 , wherein the second stopper element is mounted at the intermediate part of the hook.

10. The hook according to claim 9 , wherein the second stopper element is a shoulder located at the intermediate part toward the second end.

11. The hook according to claim 9 , wherein the second stopper element is a pin having a longitudinal axis perpendicular to the longitudinal axis of the cylindrical rod, and wherein the intermediate part includes a through hole in which the pin is arranged in the through hole.

12. The hook according to claim 11 , wherein the second stopper element is mounted in the machine frame.

13. The hook according to claim 1 , wherein at least two springs are mounted in connection to the intermediate part, wherein the springs extend between the end surface of the intermediate part connected to the second end of the hook and the machine frame.

14. The hook according to claim 1 , wherein the intermediate part is pivotally engaged at a pivoting point with the second end.

15. A towing hook system comprising a hook according to claim 1 , wherein the cylindrical rod is connected to a tube extending along the longitudinal axis of the cylindrical rod, and wherein the system transmits the towing force applied at the bent portion of the first end to the tube connected to the second end, and wherein the tube removes a brake force of the machine.

Assignees

• Sandvik Mining & Construction Oy

Inventors

• Lietonen Jani

Classifications

• B61D11/00

  Mine cars (B61D5/00 - B61D9/00 take precedence) · CPC title

• B60D1/50

  resiliently mounted (B60D1/30 takes precedence) · CPC title

• B61G1/36 Primary

  with shackles and hooks, e.g. specially adapted for mine cars · CPC title

• B60D2001/544

  One pivot axis · CPC title

• B60Y2300/28

  related to towing or towed situations · CPC title