US 2016/0230554 A1 · ADVANCING RAM PIN RETENTION DEVICE

Abstract

A pin retaining assembly for an advancing ram includes a retention plate and a retainer. The retention plate includes two oppositely facing surfaces and a channel with a notch between the two surfaces. The retainer includes a main body, a pin receiving slot, and at least two flanges. The main body is configured to slide into the notch of the channel and extend through a surface of the retention plate. The pin receiving slot has an open mouth through an end of the main body. A first flange extends from one end of the main body along a surface of retention plate and a second flange extends from another end of the main body along another surface of retention plate. The flanges retain the main body of the retainer in the first notch from moving in a direction defined by a longitudinal axis of the pin receiving slot.

Claims20

Dependent claims

A pin retaining assembly for an advancing ram, the pin retaining assembly comprising:

a retention plate including a first surface, a channel, and a first notch opening into the channel;
and
a first retainer including:
a first main body received in the first notch and extending through the first surface of the retention plate;
a pin receiving slot in the first main body, the pin receiving slot having an open mouth;
a first flange extending from the main body along the first surface of the retention plate such that the first retainer is loosely supported by the retention plate.

3 more elements

A roof support system for a longwall system comprising:

an armored face conveyor;
a relay bar coupled to the armored face conveyor;
an advancing ram having a cylinder end hingedly coupled to the relay bar and a thrust bar linearly movable with respect to the cylinder end;
a retaining pin extending through a free end of the thrust bar and having first and second opposite ends;
a roof support base;
a retention plate rigidly affixed to the roof support base, the retention plate having a channel for receiving the free end of the thrust bar, the retention plate including first and second notches on opposite sides of the channel;
and
first and second retainers loosely supported in the respective first and second notches, the first and second retainers each including a pin receiving slot for receiving the respective first and second ends of the retaining pin.

5 more elements

A method for coupling an advancing ram to a roof support base, the advancing ram including a cylinder end and a thrust bar, the method comprising the steps of:

(a) fixing a retention plate to the roof support base, wherein the retention plate includes first and second oppositely-facing surfaces, a channel, a first notch opening into the channel, and a second notch opening into the channel opposite the first notch;
(b) inserting a first retainer into the first notch of the retention plate, wherein the first retainer includes a first end flange engaging the first surface of the retention plate and a second end flange engaging the second surface of the retention plate to loosely support the first retainer in the first notch, the first retainer including a pin receiving slot;
(c) inserting a second retainer into the second notch of the retention plate, wherein the second retainer includes a first end flange engaging the first surface of the retention plate and a second end flange engaging the second surface of the retention plate to loosely support the second retainer in the second notch, the second retainer including a pin receiving slot;
(d) inserting a retaining pin through a free end of the thrust bar;
and
(e) inserting the retaining pin into the pin receiving slots of the first and second retainers, wherein a first end of the retaining pin is supported by the first retainer, and a second end of the retaining pin is supported by the second retainer.

3 more elements

Dependencies are inferred from the claim text.

Advancing ram pin retention device

Life of this patent

Advancing ram pin retention device

Life of this patent

Abstract

Claims20