Buffer stop used for end of crane rails

Patent metadata

Field	Value
Publication number	US-11649141-B2
Application number	US-202117323291-A
Country	US
Kind code	B2
Filing date	May 18, 2021
Priority date	Jul 23, 2020
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

The present invention provides a buffer stop used for an end of crane rails, including: a rail fastener fixedly connected to the crane rails, where a sliding rail is provided on each side of the rail fastener, a sliding shaft passes through the sliding rails and connecting brackets are mounted at two ends of the sliding shaft, an other end of the connecting bracket is connected to an arc-shaped plate above the rail fastener, each outer side of the connecting brackets is connected to a drive rod B by the sliding shaft, each drive rod B is connected to a drive rod A by a rotating shaft, an impact shaft is connected between top portions of two drive rods A, an impact rubber is mounted on one side of the impact shaft facing crane wheels, and each drive rod A is connected to the rail fastener by a pin shaft. The present invention is used for braking the crane at the end of the rails, to ensure safety of the crane.

First claim

What is claimed is:

1. A buffer stop used for an end of crane rails, comprising: a rail fastener fixedly connected to the crane rails, wherein a sliding rail is provided on each side of the rail fastener, a sliding shaft passes through the sliding rails and connecting brackets are mounted at two ends of the sliding shaft, an other end of the connecting bracket is connected to an arc-shaped plate above the rail fastener, each outer side of the connecting brackets is connected to a drive rod B by the sliding shaft, each drive rod B is connected to a drive rod A by a rotating shaft, an impact shaft is connected between top portions of two drive rods A, an impact rubber is mounted on one side of the impact shaft facing crane wheels, and each drive rod A is connected to the rail fastener by a pin shaft.

2. The buffer stop used for an end of crane rails according to claim 1 , wherein the connecting brackets are two L-shaped steel brackets mounted on both sides of the rail, the connecting bracket is connected to the drive rod B by the sliding shaft clamped on the sliding rail, a rear baffle is fixed between the two connecting brackets, and a damping sheet is pasted on a face of the rear baffle facing the crane wheels.

3. The buffer stop used for an end of crane rails according to claim 1 , wherein a front baffle is fixed at an upper end of the rail fastener, the front baffle is provided opposite a rear baffle, a damping sheet is pasted on a face of the front baffle facing away from the crane wheels, and there is a gap between the damping sheet on the front baffle and the damping sheet on the rear baffle.

4. The buffer stop used for an end of crane rails according to claim 1 , wherein the rail fastener is a U-shaped steel fastener fixed at the end of the crane rails by using bolts, and a sliding groove for passage of the crane wheels is provided at an upper end on a side of the rail fastener close to the crane wheels.

Assignees

• Univ Southeast

Inventors

• Jin Hui
• Jiao Haihan
• Ding Keqin
• Wang Libin

Classifications

• B66C7/16 Primary

  Devices specially adapted for limiting trolley or crane travel; Arrangements of buffer-stops (buffer-stops of interest apart from this application B61K7/18; limit-switch arrangements, limit circuits B66D1/56) · CPC title

• B61K7/20

  Positive wheel stops · CPC title

• B66D5/00

  Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads (for pulley blocks B66D3/10) · CPC title

• B66D2700/03

  Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure · CPC title