CN210240174U

CN210240174U - Hollow column hydraulic oil cylinder

Info

Publication number: CN210240174U
Application number: CN201921057859.0U
Authority: CN
Inventors: Zengming Wu; 吴增明; Zhiyi Guo; 郭志义; Baoshu Fu; 付保书; Han Wu; 吴瀚; Shaofeng Shen; 沈少峰
Original assignee: SHANXI LU'AN ENVIRONMENTAL ENERGY DEVELOPMENT Co Ltd WANGZHUANG COAL MINE
Current assignee: SHANXI LU'AN ENVIRONMENTAL ENERGY DEVELOPMENT Co Ltd WANGZHUANG COAL MINE
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-03
Anticipated expiration: 2029-07-09

Abstract

The utility model provides a well hollow column hydraulic cylinder, belong to mine hydraulic pressure extracting tool technical field, can solve articulated round pin axle class spare part and take place to rust die or dismantle inconvenient problem after warping, including the cylinder, post core and piston ring, the post core stretches into in the cylinder, the bottom of post core is passed through the base and is connected with the cylinder, the center of base is equipped with the through-hole, the center of post core is equipped with the through-hole, the piston ring is located the post core and between the cylinder, the lateral wall bottom of cylinder is equipped with the feed liquor hole, the feed liquor hole is located between the upper end of base and the lower extreme of piston ring, be equipped with drum type oil blanket between the inside wall of piston ring and cylinder, it is sealed to be equipped with the bud type between the lateral wall of piston ring and post core, the. The utility model discloses the sleeve of adapted different diameters, the dismantlement of the round pin axle of applicable different diameters.

Description

Hollow column hydraulic oil cylinder

Technical Field

The utility model belongs to the technical field of mine hydraulic pressure extracting tool, concretely relates to well hollow column hydraulic cylinder.

Background

The disassembly of pin shaft parts is a process link for equipment maintenance and part replacement. In great round pin axle class part, be used for articulated round pin axle class zero (part) because the influence of the great and environment of work load, the emergence of the circumstances such as rust die and round pin axle deformation is inevitable, when needs overhaul extract when dismantling, general dismantlement technology is mostly directly hammering and is beaten. When the pin shaft (sleeve) deforms, the pin shaft is limited and influenced by the working condition environment, time and labor are wasted, and the efficiency is not high.

The electric traction coal mining machine set is production equipment of underground working face, and is characterized by that its left and right rocker arms and main machine frame are connected together to form an integrated coal mining machine set, and the rocker arms can transfer power to cutting drum to drive the cutting drum to rotate so as to cut coal and load the coal, and the connection mode between it and main machine frame adopts hinged connection process (including arm frame) to make it easy to disassemble, regulate direction, assemble and transport. When the rocker arm part needs to be overhauled or replaced, the hinged pin shaft is difficult to pull out due to deformation and the like, and the disassembly of the pin shaft part is a process link for equipment overhaul and part replacement.

When parts of pin shafts hinged between mechanical parts are damaged and replaced, the pin shafts are mostly punched out in a striking mode when being disassembled, and once the pin shafts for hinging are deformed and rusted, the processing is very troublesome. Aiming at the phenomenon that the hinged pin shaft of the rocker arm and the main frame of the coal mining unit is difficult to pull out and disassemble during component maintenance, a practical disassembling tool applied to on-site maintenance operation of a working face is researched and developed by an improved process.

Disclosure of Invention

The utility model discloses take place to rust to die or warp the inconvenient problem of back dismantlement to articulated round pin axle class spare part, provide a cavity post hydraulic cylinder. The dismounting device is applied to dismounting pin shaft parts during part replacement and maintenance.

The utility model adopts the following technical scheme:

the utility model provides a well hollow column hydraulic cylinder, including the cylinder, post core and piston ring, the post core stretches into in the cylinder, the bottom of post core is passed through the base and is connected with the cylinder, the center of base is equipped with the through-hole, the center of post core is equipped with the through-hole, the piston ring is located the post core and between the cylinder, the lateral wall bottom of cylinder is equipped with the feed liquor hole, the feed liquor hole is located between the upper end of base and the lower extreme of piston ring, be equipped with drum type oil blanket between the inside wall of piston ring and cylinder, it is sealed to be equipped with the bud type between the lateral wall of piston ring and post core, the top of piston ring is equipped.

And a check ring is arranged at the top end of the cylinder barrel.

And a guide sleeve is arranged between the piston ring and the inner side wall of the cylinder barrel.

The centers of the through holes of the cylinder barrel and the cylinder core, the centers of the through holes of the piston ring, the sleeve and the base are positioned on the same axis.

The lateral wall of cylinder is equipped with the lug.

The utility model has the advantages as follows:

the hydraulic cylinder commonly used all is that the post core stretches out forward, pushes up before the effort, and the post core is the motion piece, and the hydro-cylinder is located firm face, and the cylinder is motionless, and the utility model discloses a piston ring promotes the sleeve action, and during the use, the hydro-cylinder is the motion piece, pushes away behind the effort. When the pin shaft type part dismounting device is used, the high-strength bolt penetrates through the through hole to be connected with the pin shaft, and the pin shaft type part is convenient to dismount.

The sleeve with different diameters is matched, so that the dismounting device is suitable for dismounting the pin shafts with different diameters.

Use the utility model discloses dismantle articulated round pin axle, the work efficiency can improve 6 times.

Drawings

Fig. 1 is a schematic structural view of the present invention;

wherein: 1-a cylinder barrel; 2-column core; 3-a piston ring; 4-a base; 5-liquid inlet hole; 6-drum type oil seal; 7-bud type sealing; 8-a sleeve; 9-a retainer ring; 10-a guide sleeve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a cavity post hydraulic cylinder, including cylinder 1, post core 2 and piston ring 3, post core 2 stretches into 1 in the cylinder, base 4 and cylinder 1 are passed through to the bottom of post core 2 and are connected, the center of base 4 is equipped with the through-hole, the center of post core 2 is equipped with the through-hole, piston ring 3 is located post core 2 and between cylinder 1, the lateral wall bottom of cylinder 1 is equipped with feed liquor hole 5, feed liquor hole 5 is located between the upper end of base 4 and the lower extreme of piston ring 3, be equipped with drum type oil blanket 6 between the inside wall of piston ring 3 and cylinder 1, be equipped with bud type seal 7 between the lateral wall of piston ring 3 and post core 2, the top of piston ring 3 is equipped with the sleeve 8 with round pin axle matching, 8 covers in the outside of post core.

The top end of the cylinder barrel 1 is provided with a retainer ring 9.

And a guide sleeve 10 is arranged between the piston ring 3 and the inner side wall of the cylinder barrel 1.

The centers of the through holes of the cylinder barrel 1, the column core 2, the piston ring 3, the sleeve 8 and the base 4 are positioned on the same axis.

The side wall of the cylinder barrel 1 is provided with a lifting lug.

The utility model discloses a power supply can be provided by the hydraulic system of working face coal-winning machine, entry driving machine, hydraulic support.

The working process of the utility model is as follows:

the high-strength bolt penetrates through the through hole and the sleeve of the column core and is connected with the disassembled pin shaft, the other side of the high-strength bolt is fixed at the base through a nut, an operating oil pump hand feeds liquid through the liquid inlet hole, the piston ring moves forwards under the pushing action of high-pressure liquid to push the sleeve to prop against the base hole of the pin shaft, the oil liquid acts on the base of the cylinder barrel, the cylinder barrel moves backwards to drive the high-strength bolt to pull out the disassembled pin shaft from the hole, and the disassembling work is completed.

Claims

1. A cavity post hydraulic cylinder which characterized in that: including cylinder (1), post core (2) and piston ring (3), post core (2) stretch into in the cylinder (1), the bottom of post core (2) is passed through base (4) and is connected with cylinder (1), the center of base (4) is equipped with the through-hole, the center of post core (2) is equipped with the through-hole, piston ring (3) be located post core (2) and between cylinder (1), the lateral wall bottom of cylinder (1) is equipped with feed liquor hole (5), feed liquor hole (5) are located between the upper end of base (4) and the lower extreme of piston ring (3), be equipped with drum type oil blanket (6) between the inside wall of piston ring (3) and cylinder (1), be equipped with bud type seal (7) between the lateral wall of piston ring (3) and post core (2), the top of piston ring (3) is equipped with sleeve (8) that match with the round pin axle, sleeve (8) cover is in the outside of post core (2).

2. A hollow column hydraulic ram according to claim 1, wherein: the top end of the cylinder barrel (1) is provided with a check ring (9).

3. A hollow column hydraulic ram according to claim 1, wherein: and a guide sleeve (10) is arranged between the piston ring (3) and the inner side wall of the cylinder barrel (1).

4. A hollow column hydraulic ram according to claim 1, wherein: the centers of the through holes of the cylinder barrel (1), the column core (2), the piston ring (3), the sleeve (8) and the base (4) are positioned on the same axis.

5. A hollow column hydraulic ram according to claim 1, wherein: the side wall of the cylinder barrel (1) is provided with a lifting lug.