摘要:
Several embodiments of a drive pin retention system for mining chains comprise a drive pin, dowel pin, and retainer, wherein the dowel pin is fitted through the holes of a retainer aligned with the holes of the dowel pin and pressed with force so that the tolerance between the dowel pin and retainer is very close. In one embodiment, the retainer is tack welded and then the dowel pin is tack welded to further increase the tolerance and prevent loosening or movement of the retainer due to vibration.
摘要:
A ligature attachment device for use with a ligature is disclosed, the ligature attachment device comprising a proximal section comprising a loop retainer section, a distal section comprising a tool section, a central section comprising a central ligature spool section having a centrally located cinch aperture and the central ligature spool section is coupled to the loop retainer section and the tool section. The loop retainer section having a loop retainer profile configured to retain a loop of the ligature frictionally engaged with the central ligature spool section. The cinch aperture having an aperture shape configured to allow at least two sections of a ligature to be removably retained in the cinch aperture whereby the cinch aperture can removably retain the loop of the ligature. The tool section comprises a first tool for removably joining a second tool.
摘要:
The invention relates to the field of anchor chains, and more particularly an anchor chain (1) comprising a first plurality of links (3) and, at the end of the chain, a second plurality of links (4) comprising at least three successive links (4) in each of which at least one property selected from its bar diameter and the elastic limit of its material is substantially greater than in each of the links (3) of the first plurality, in order to improve the ability of the chain to withstand fatigue by bending of the links (4) in the second plurality.
摘要:
An anchor point for a lever binder is disclosed herein. The anchor point includes a collar. The anchor point also includes a cap including a base and at least one arm. The collar and the cap cooperate to form an aperture for receiving a handle of a lever binder.
摘要:
A chain block is provided including a load chain which hangs a load, and a load sheave member which is rotatably supported between a first frame and a second frame, around which the load chain is wound, and which has a chain pocket in which the load chain goes, the load chain is made of a steel material having the Rockwell hardness C scale (HRC) of 47 to 51, and the load sheave member is made of a steel material in which at least the chain pocket has the Rockwell hardness C scale (HRC) of 40 to 45.
摘要:
In a component for shortening a chain (12), said component being provided with a connector bow (2) that can be hung into a connector body (6) and with a shortening organ (7), a safety bolt, which is simultaneously formed as a retainer pin (3) for the end link (11) of the chain (12) to be shortened, serves to secure the position of the connector bow (2) in the connector body (6).
摘要:
A pulling chain storage device for a scrolling door machine is provided to tie the chain that can be pulled manually when the scrolling door machine is malfunctioned. The storage device includes a vertical fixing section at an end and a horizontal tying end at the other end, and the tying section includes at least one opening section, and the opening section includes an external end and an internal end, and the width of the opening section is tapered from the external end to the internal end, such that a pairs of suspending arms are formed between the internal end of the opening section and the hollow hole, so as to tie a chain to a flexible suspending arm and prevent the chain from being jammed in the storage device. The chain can be easily released even if the chain is jammed.
摘要:
An insert assembly adapted to be received within a link of a chain including a plurality of round wire interlocking links, the insert being made of a resilient material and being dimensioned to be wider than the central area height and longer than the central area depth so that after the insert is placed between the opposed sides of the chain, the insert springs back around the opposed sides of the chain so that the insert is securely locked between the opposed sides of the chain. The insert has a central opening, and the insert assembly further includes a pin secured in the opening when the insert is received in the chain central area so that the insert cannot move away from the chain opposed sides.
摘要:
A power transmission chain has opposed first link members arranged alternately with opposed second link members along the length of the chain. The first and second link members are connected to one another in an articulated manner such that there is rolling contact between the two at respective bearing surfaces. The second link members are disposed freely between adjacent pins. Each first link member is connected in a friction fit to each end of the pin. The bearing surfaces run transverse to the longitudinal axis of the chain. The design reduces the polygonal effect by providing for two articulating joints between adjacent pins and significantly reduces wear by providing rolling contact at the bearing surfaces.
摘要:
A component (1) for regulating or modifying the effective length of a round steel chain (22) has at least one cross recess consisting of a longer recess (12) and a shorter recess (6). The chain can be threaded into the cross recess. The component also has a pin (11) for fixing the component in a particular position in relation to the chain (22). The pin forms a blocking element and has at least one groove (14) which forms the end of the longer recess when the cross recess is free. During normal operation, the groove is forced by a spring (10) into a position in which the pin (11) blocks the cross recess.