The model utility content
The purpose of this utility model is in order to remedy the deficiency of prior art, a kind of hoisting cylinder for fork truck and frame fitting seat structure thereof of quick mounting are provided, having solved existing oil cylinder and frame fitting seat structure thereof installs inconvenient, inefficiency, the problems such as simultaneously shock resistance is relatively poor, and oil cylinder working life is short.
The utility model is achieved through the following technical solutions:
A kind of hoisting cylinder for fork truck of quick mounting and frame fitting seat structure thereof, include cylinder barrel and piston rod, it is characterized in that: the cylinder barrel end of described piston rod external part is equipped with cylinder cap by fixed cover, the external part end of described piston rod is provided with step, and the end of step section is flat horizontal surface, be distributed with positioning hole on the described flat horizontal surface, the bottom of described cylinder barrel is provided with annular fixed plate, described annular fixed plate middle part is distributed with directional post, described directional post cooperates with guide sleeve on the frame fitting seat, and be set with spring on the directional post, the edge of described circular orientation plate is distributed with pilot hole, described frame fitting seat is provided with the positioning rod that cooperates with pilot hole, the end of described positioning rod is provided with outside thread and is combined with stop nut, the bottom of described cylinder barrel is provided with the oil-feed mouth of pipe that is communicated with the cylinder barrel cavity, is provided with the oil return mouth of pipe near the cylinder cap position on the described cylinder barrel sidewall.
The contact position of described cylinder cap and piston rod external part is tightly connected by Sealing, and the piston of described piston rod end is slidingly matched by bearing support and inner wall of cylinder, and is sealed and matched by seal ring between supporting frame and the inner wall of cylinder.
Described piston rod external part cooperates with draw-in groove on the door frame by flat horizontal surface, and described draw-in groove is provided with the positioning hole corresponding with positioning hole, and by inserting locating stud in the positioning hole piston rod end is fixedly connected with door frame.
Described cylinder cap also is provided with dust ring with the contact position of the piston rod that stretches out.
Its principle is: all cross piston rod external part end step and location pore structure, itself and draw-in groove on the door frame are clamped to be cooperated, and the cooperation by the positioning hole on draw-in groove and the step section, bottom by cylinder barrel is respectively equipped with annular fixed plate, directional post and guiding pore structure and adopts the plane to cooperate installation to fix with the frame fitting seat simultaneously, installation and the replacing of oil cylinder have been made things convenient for, can adapt to according to the structure that the difference of lifting altitude changes the length of changing cylinder barrel and piston rod and door frame the requirement of different size, and good stability, satisfied usage requirement.
By cooperating and the structure of spring of the directional post on cylinder barrel bottom and the frame fitting seat and guide sleeve, can make between cylinder barrel and the frame fitting seat and be provided with buffer structure, can make the work of oil cylinder safety and stability, increased the working life of oil cylinder, in the process by the guide rod in the pilot hole and the structural design of the stop nut on the guide rod, strengthen oil cylinder and frame fitting seat fixation, played simultaneously position-limiting action.
The utility model has the advantages that:
The utility model reasonable in design has made things convenient for installation and the replacing of oil cylinder, and the impact endurance test shock that has been subject to when having avoided hoist cylinder work is stronger, can make the work of oil cylinder safety and stability, has increased simultaneously the working life of oil cylinder.
Embodiment
Referring to accompanying drawing, a kind of hoisting cylinder for fork truck of quick mounting and frame fitting seat structure thereof, include cylinder barrel 1 and piston rod 2, the cylinder barrel end of piston rod 2 external parts is equipped with cylinder cap 4 by fixed cover 3, the external part end of piston rod 2 is provided with step 5, and the end of step section is flat horizontal surface, be distributed with positioning hole 6 on the flat horizontal surface, the bottom of cylinder barrel 1 is provided with annular fixed plate 7, annular fixed plate 7 middle parts are distributed with directional post 8, directional post 8 cooperates with guide sleeve 10 on the frame fitting seat 9, and be set with spring 11 on the directional post 8, the edge of circular orientation plate 7 is distributed with pilot hole 12, frame fitting seat 9 is provided with the positioning rod 13 that cooperates with pilot hole 12, the end of positioning rod 13 is provided with outside thread and is combined with stop nut 14, and the bottom of cylinder barrel 1 is provided with the oil-feed mouth of pipe 15 that is communicated with cylinder barrel 1 cavity, is provided with the oil return mouth of pipe 16 near the cylinder cap position on cylinder barrel 1 sidewall; Cylinder cap 4 is tightly connected by Sealing with the contact position of piston rod 2 external parts, and the piston of piston rod 2 ends is slidingly matched by bearing support 17 and cylinder barrel 1 inwall, and is sealed and matched by seal ring between supporting frame 17 and cylinder barrel 1 inwall; Piston rod 2 external parts cooperate with draw-in groove on the door frame by flat horizontal surface, and described draw-in groove is provided with the positioning hole corresponding with positioning hole 6, and by inserting locating stud in the positioning hole piston rod end are fixedly connected with door frame; Cylinder cap 4 also is provided with dust ring with the contact position of the piston rod 2 that stretches out.