CN212615706U

CN212615706U - Movable arm oil cylinder of 1.8T excavator

Info

Publication number: CN212615706U
Application number: CN202021278843.5U
Authority: CN
Inventors: 彭瑞权; 刘涛; 王斌; 刘尧强
Original assignee: Hiyo Heavy Industry Liability Co ltd
Current assignee: Hiyo Heavy Industry Liability Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-02-26
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a 1.8T excavator swing arm hydro-cylinder, including the piston rod, the uide bushing, the cylinder body, a piston, the axle sleeve, the retaining ring is used in the hole, the steel ball, set screw, the cushion collar, the pressure filling oil cup, the dust ring, O type sealing washer, the retaining ring is used to the axle, first shaping uide ring, second shaping uide ring, the sealing ring is used in the hole and the dustproof subassembly of oil cup, the uide bushing is overlapped on the inner wall of one end of cylinder body, install the piston on the inner wall of cylinder body one end, and the one end fixedly connected with piston rod of piston, and the one end of piston rod runs through in the outside of uide bushing, the axle sleeve is all; the utility model discloses a, improved the adaptability of hydro-cylinder, solved and appeared oil blanket oil leak, pressure release, flexible slow condition easily in the traditional swing arm hydro-cylinder use, the problem of operation inflexible, influence performance wherein the setting of the dustproof subassembly of oil cup, the oil cup that prevents that can be fine is infected with the dust of pressure filling, does benefit to the later stage and opens the top cap and carry out the oiling.

Description

Movable arm oil cylinder of 1.8T excavator

Technical Field

The utility model relates to an excavator hydro-cylinder technical field specifically is 1.8T excavator swing arm hydro-cylinder.

Background

The hydraulic system of the excavator is a combination body which organically connects various hydraulic components by pipelines according to the transmission requirements of the excavator working device and various mechanisms; the hydraulic control system mainly comprises a hydraulic oil tank, a main pump, a multi-way valve, pipelines, oil cylinders for executing actions, a motor and the like; the hydraulic excavator has the functions that oil is used as a working medium, the mechanical energy of an engine is converted into hydraulic energy by using a hydraulic pump and is transmitted, and then the hydraulic energy is converted back into the mechanical energy by using a hydraulic cylinder, a hydraulic motor and the like, so that various actions of the excavator are realized; the conventional movable arm oil cylinder is easy to have the conditions of oil leakage, pressure relief and slow expansion in the common use process, the operation is not flexible, the use performance is influenced, the movable arm oil cylinder is poor in adaptability and poor in integration with a liquid path system and a structural member, an oil cup dustproof assembly is not arranged on a pressure oil filling cup of the movable arm oil cylinder, the oil cup is easy to be contaminated and can cause blockage in the long-term use process of the oil cylinder, and later-period oil filling is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 1.8T excavator movable arm hydro-cylinder to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: 1.8T excavator swing arm hydro-cylinder, including piston rod, uide bushing, cylinder body, piston, axle sleeve, check ring for hole, steel ball, holding screw, cushion collar, pressure filling oil cup, dust ring, O type sealing washer, check ring for shaft, first shaping uide ring, second shaping uide ring, sealing washer for hole and oil cup dustproof subassembly, the cover is equipped with the uide bushing on the one end inner wall of cylinder body, install the piston on the inner wall of cylinder body one end, and the one end fixedly connected with piston rod of piston, and the one end of piston rod runs through in the outside of uide bushing, the equal fixedly connected with axle sleeve of one end of cylinder body and piston rod, the cushion collar is installed on the inner wall that the cylinder body is located piston one side, it has the check ring for hole to inlay on the inner wall of uide bushing one end, it has the steel ball to inlay on the inner wall that the cylinder body is located piston one side, and installs holding, the anti-dust seal structure is characterized in that a dustproof ring is embedded in the inner wall of one side of the guide sleeve, an O-shaped sealing ring is sleeved on the outer wall of the top end of one side of the guide sleeve, a retaining ring for a shaft and a first forming guide ring are sleeved on the inner wall of the middle of the guide sleeve, a second forming guide ring and a sealing ring for a hole are sleeved on the outer wall of one side of the piston respectively, an oil injection cup is installed on the outer wall of one side of the shaft sleeve, and an oil cup dustproof assembly is arranged on the outer wall, located on one side of the oil injection cup, of.

Further, the oil cup subassembly that prevents dust includes dustproof sleeve, installation piece, rotation groove, axis of rotation, link, torsion spring and top cap, the cover is equipped with dustproof sleeve on the outer wall that the axle sleeve is located pressure filling oil cup one side, fixedly connected with installation piece on the outer wall of dustproof sleeve one side, the rotation groove has been seted up on the top outer wall of installation piece, rotate to be connected with the link through the axis of rotation on the both sides inner wall in groove, and the cover is equipped with torsion spring on the outer wall of axis of rotation, fixedly connected with top cap on the outer wall of link one side.

Furthermore, one end of the torsion spring is fixedly connected with the outer wall of one side of the mounting block, and the other end of the torsion spring is fixedly connected with the outer wall of one side of the connecting frame.

Furthermore, the outer wall of one side of the top cover is fixedly connected with a sealing gasket, and the outer wall of the top end of the dustproof sleeve is provided with a step groove corresponding to the sealing gasket.

Furthermore, the rotating connection position of the rotating shaft and the connecting frame is embedded with a bearing.

Furthermore, a check ring is arranged on the inner wall of the guide cylinder body, which is positioned on one side of the O-shaped sealing ring.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model discloses a, the structure is comparatively compact reasonable, has improved the adaptability of hydro-cylinder, has solved the condition that appears the oil blanket oil leak easily in the traditional swing arm hydro-cylinder use, pressure release, flexible slow, operates the problem inflexible, influence performance, wherein the setting of the dustproof subassembly of oil cup, can be fine prevent that the pressure injection oil cup is infected with the dust, does benefit to the later stage and opens the top cap and carry out the oiling.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic view of a partial structure of the present invention;

fig. 2 is a schematic top sectional structure of the present invention;

FIG. 3 is a schematic perspective view of the oil cup dust-proof assembly of the present invention;

FIG. 4 is a schematic view of a top-down cutting structure of the oil cup dustproof assembly of the present invention;

in the figure: 1. a piston rod; 2. a guide sleeve; 3. a cylinder body; 4. a piston; 5. connecting the shaft sleeve; 6. a retainer ring for a bore; 7. a steel ball; 8. tightening the screw; 9. a buffer sleeve; 10. pressing and filling the oil cup; 11. a dust ring; 12. an O-shaped sealing ring; 13. a retainer ring for a shaft; 14. a first forming guide ring; 15. a second forming guide ring; 16. a sealing ring for the hole; 17. an oil cup dust prevention assembly; 18. a gasket; 19. a step groove; 171. a dust-proof sleeve; 172. Mounting blocks; 173. a rotating groove; 174. a rotating shaft; 175. a connecting frame; 176. a torsion spring; 177. and a top cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: A1.8T excavator swing arm oil cylinder comprises a piston rod 1, a guide sleeve 2, a cylinder body 3, a piston 4, a shaft sleeve 5, a hole retainer ring 6, a steel ball 7, a set screw 8, a buffer sleeve 9, a pressure filling oil cup 10, a dust ring 11, an O-shaped seal ring 12, a shaft retainer ring 13, a first forming guide ring 14, a second forming guide ring 15, a hole seal ring 16 and an oil cup dust-proof component 17, wherein the inner wall of one end of the cylinder body 3 is sleeved with the guide sleeve 2, the inner wall of one end of the cylinder body 3 is provided with the piston 4, one end of the piston 4 is fixedly connected with the piston rod 1, one end of the piston rod 1 penetrates through the outer part of the guide sleeve 2, the shaft sleeve 5 is fixedly connected with one ends of the cylinder body 3 and the piston rod 1, the buffer sleeve 9 is arranged on the inner wall of one side of the piston 3, the hole retainer ring 6 is embedded on the inner wall of one end of the guide sleeve 2, a set screw 8 is installed on the inner wall of the steel ball 7 above the cylinder body 3, a dustproof ring 11 is embedded on the inner wall of one side of the guide sleeve 2, an O-shaped sealing ring 12 is sleeved on the outer wall of the top end of one side of the guide sleeve 2, a retaining ring 13 for a shaft and a first forming guide ring 14 are sleeved on the inner wall of the middle part of the guide sleeve 2, a second forming guide ring 15 and a sealing ring 16 for a hole are sleeved on the outer wall of one side of the piston 4 respectively, an oil filling cup 10 is installed on the outer wall of one side of the shaft sleeve 5, and an oil cup dustproof assembly 17 is arranged on the outer wall of one side of the shaft sleeve 5, which is; the oil cup dustproof assembly 17 comprises a dustproof sleeve 171, a mounting block 172, a rotating groove 173, a rotating shaft 174, a connecting frame 175, a torsion spring 176 and a top cover 177, wherein the dustproof sleeve 171 is sleeved on the outer wall of one side of the pressure filling oil cup 10 of the shaft sleeve 5, the mounting block 172 is fixedly connected to the outer wall of one side of the dustproof sleeve 171, the rotating groove 173 is formed in the outer wall of the top end of the mounting block 172, the connecting frame 175 is rotatably connected to the inner walls of two sides of the rotating groove 173 through the rotating shaft 174, the torsion spring 176 is sleeved on the outer wall of the rotating shaft 174, and the top cover 177 is fixedly connected to the outer wall of one; one end of the torsion spring 176 is fixedly connected with the outer wall of one side of the mounting block 172, and the other end of the torsion spring 176 is fixedly connected with the outer wall of one side of the connecting frame 175; the outer wall of one side of the top cover 177 is fixedly connected with a sealing gasket 18, the outer wall of the top end of the dustproof sleeve 171 is provided with a step groove 19 corresponding to the sealing gasket 18, a bearing is embedded at the rotating joint of the rotating shaft 174 and the connecting frame 175, the top cover 177 is rotatably covered under the action of the rotating shaft 174 under the action of the torsion spring 176, the dustproof cover above the dustproof sleeve 171 can be well covered, the pressure injection oil cup 10 can be well prevented from being contaminated by dust, and the top cover 177 is favorably opened for oil injection in the later period; a check ring is arranged on the inner wall of the guide cylinder body 3 at one side of the O-shaped sealing ring 12;

the guide sleeve 2 of the device is developed according to the working condition characteristics of the excavator and is made of forged No. 45 steel parts, the guide sleeve has better strength and toughness after integral hardening and tempering, the surface is sand-blasted to improve the smoothness, the surface cleanliness is improved, and the surface requirement required by the subsequent paint spraying process is ensured, so that the corrosivity of the surface of the guide sleeve 2 is ensured, the internal structure of the guide sleeve 2 is increased, the guide area is increased, the internal stress is reduced to the minimum, and the service life of the piston rod 1 and the sealing element is prolonged;

the buffer sleeve 9 of the device is specially developed according to the working condition characteristics of the excavator, nodular cast iron is adopted at present, the economic performance and the blending performance of the buffer sleeve 9 are improved, the guide sleeve 2 is prevented from being easily scratched, the service life of the guide sleeve 2 and the service life of the buffer sleeve are prolonged, the body of the buffer sleeve 9 is also improved, the rigidity or the toughness is further improved, the complex process is reduced, the production efficiency is improved, and the quality problem is also reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1.1.8T excavator swing arm hydro-cylinder, including piston rod (1), uide bushing (2), cylinder body (3), piston (4), axle sleeve (5), hole with retaining ring (6), steel ball (7), holding screw (8), cushion collar (9), pressure filling oil cup (10), dust ring (11), O type sealing washer (12), axle with retaining ring (13), first shaping guide ring (14), second shaping guide ring (15), hole with sealing washer (16) and oil cup subassembly (17) that prevents dust, its characterized in that: the guide sleeve (2) is sleeved on the inner wall of one end of the cylinder body (3), the piston (4) is installed on the inner wall of one end of the cylinder body (3), the piston rod (1) is fixedly connected with one end of the piston (4), one end of the piston rod (1) penetrates through the outer portion of the guide sleeve (2), the shaft sleeve (5) is fixedly connected with one end of the cylinder body (3) and one end of the piston rod (1), the buffer sleeve (9) is installed on the inner wall of one side of the piston (4) of the cylinder body (3), the hole check ring (6) is embedded on the inner wall of one end of the guide sleeve (2), the steel ball (7) is embedded on the inner wall of one side of the piston (4), the fastening screw (8) is installed on the inner wall of the upper portion of the cylinder body (3) of the steel ball (7), the dust prevention ring (11) is embedded on the inner wall of one side of the guide sleeve (2), the O-shaped sealing ring (12), the oil filling device is characterized in that a shaft retainer ring (13) and a first forming guide ring (14) are sleeved on the inner wall of the middle of the guide sleeve (2), a second forming guide ring (15) and a hole sealing ring (16) are sleeved on the outer wall of one side of the piston (4) respectively, a pressure oil filling cup (10) is installed on the outer wall of one side of the shaft sleeve (5), and an oil cup dustproof assembly (17) is arranged on the outer wall of one side, located on the pressure oil filling cup (10), of the shaft sleeve (5).

2. The boom cylinder of the 1.8T excavator according to claim 1, wherein: oil cup dustproof subassembly (17) are including dustproof sleeve (171), installation piece (172), rotation groove (173), axis of rotation (174), link (175), torsion spring (176) and top cap (177), axle sleeve (5) are located to press and annotate the outer wall of oil cup (10) one side and are equipped with dustproof sleeve (171) on the cover, fixedly connected with installation piece (172) on the outer wall of dustproof sleeve (171) one side, rotation groove (173) have been seted up on the top outer wall of installation piece (172), rotate through axis of rotation (174) on the both sides inner wall of rotation groove (173) and be connected with link (175), and the cover is equipped with torsion spring (176) on the outer wall of axis of rotation (174), fixedly connected with top cap (177) on the outer wall of link (175) one side.

3. The boom cylinder of the 1.8T excavator according to claim 2, wherein: one end of the torsion spring (176) is fixedly connected with the outer wall of one side of the mounting block (172), and the other end of the torsion spring (176) is fixedly connected with the outer wall of one side of the connecting frame (175).

4. The boom cylinder of the 1.8T excavator according to claim 2, wherein: fixedly connected with sealed pad (18) on the outer wall of top cap (177) one side, step groove (19) have been seted up to the top outer wall of dustproof sleeve (171) corresponding sealed pad (18).

5. The boom cylinder of the 1.8T excavator according to claim 2, wherein: and a bearing is embedded and installed at the rotating connection position of the rotating shaft (174) and the connecting frame (175).

6. The boom cylinder of the 1.8T excavator according to claim 1, wherein: and a check ring is arranged on the inner wall of the cylinder body (3) on one side of the O-shaped sealing ring (12).