CN202577396U - Boom cylinder of excavator - Google Patents
Boom cylinder of excavator Download PDFInfo
- Publication number
- CN202577396U CN202577396U CN 201220096289 CN201220096289U CN202577396U CN 202577396 U CN202577396 U CN 202577396U CN 201220096289 CN201220096289 CN 201220096289 CN 201220096289 U CN201220096289 U CN 201220096289U CN 202577396 U CN202577396 U CN 202577396U
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- CN
- China
- Prior art keywords
- cylinder
- cylinder barrel
- piston
- oil inlet
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a boom cylinder of an excavator. The boom cylinder comprises a cylinder barrel, a cylinder bottom, a piston, an oil inlet channel and a piston rod, wherein the cylinder bottom is arranged at the bottom of the cylinder barrel and seals the cylinder barrel; the piston moves in the cylinder barrel in a reciprocating manner and accordingly drives the piston rod connected with the piston to move in a reciprocating manner; the oil inlet channel passes through a guide sleeve sleeved at an opening of the cylinder barrel and extends to the cylinder bottom along the cylinder barrel, and the tail end of the oil inlet channel is positioned at a fixing card; the fixing card is arranged in the middle of the cylinder barrel and is used for fixing the oil inlet channel; the piston rod comprises a rod and a head; a portion, which is connected with head, of the rod is a shoulder; and the shoulder comprises two semicircular clamp keys. The boom cylinder with the structure has the following technical advantages that a buffering sleeve is arranged at the piston, so that impact of impact force to the cylinder is effectively reduced when the boom cylinder acts; and because the impact is reduced, the failure rate of the cylinder is reduced, and the service life of the boom cylinder is greatly prolonged.
Description
Technical field
The utility model relates to a kind of oil cylinder, particularly a kind of excavator swing arm oil cylinder.
Background technology
At building engineering field, excavator is common engineering machinery, and what all adopt in the time of excavator work is that oil cylinder promotes forearm firmly, and then drives bucket, thereby reaches the purpose of excavation.Therefore, concerning excavator, boom cylinder is important member, also is the critical component that influences excavator power and efficient.
The utility model content
The purpose of the utility model provides a kind of excavator swing arm oil cylinder, and the impulse force that oil cylinder bore when this oil cylinder can effectively reduce excavator work can not damage easily, and arranged long application life.
For solving the problems of the technologies described above, technical scheme of the present invention is following:
A kind of excavator swing arm oil cylinder comprises cylinder barrel, cylinder bottom, piston, oil inlet passage and piston rod, and cylinder bottom is arranged on the bottom of cylinder barrel; And with the cylinder barrel sealing, piston moves back and forth in cylinder barrel, moves back and forth thereby drive coupled piston rod; Said oil inlet passage is through being socketed in the fairlead of cylinder barrel opening part, and oil inlet passage prolongs cylinder barrel and extends to the cylinder bottom direction, the terminal end at the fixed card place; Fixed card is arranged on the cylinder barrel middle part, is used for fixing oil inlet passage, and said piston rod comprises bar portion and head; The part that bar portion is connected with head is a shoulder, and said shoulder comprises two semi-circular card keys.Owing to adopted said structure, the present invention to have following technique effect: the piston place is provided with cushion collar, when acting, effectively reduces the impact of impulse force to oil cylinder.Reduce owing to impact, the fault rate of oil cylinder is reduced, greatly prolong application life.
Description of drawings
Below will combine accompanying drawing that the specific embodiment of the utility model is described in further detail, wherein:
Fig. 1 is the utility model embodiment 1 overall schematic;
Wherein: cylinder barrel 1, cylinder bottom 2, oil inlet passage 4, piston rod 6, fairlead 7, fixed card 8, bar portion 9, head 10, shoulder 11, card key 12.
The specific embodiment
As shown in Figure 1, a kind of excavator swing arm oil cylinder comprises cylinder barrel 1, cylinder bottom 2, piston, oil inlet passage 4 and piston rod 6; Cylinder bottom 2 is arranged on the bottom of cylinder barrel 1, and with cylinder barrel 1 sealing, piston moves back and forth in cylinder barrel 1; Move back and forth thereby drive coupled piston rod 6, said oil inlet passage 4 is through being socketed in the fairlead 7 of cylinder barrel 1 opening part, and oil inlet passage 4 prolongs cylinder barrel 1 and extends to cylinder bottom 2 directions; The terminal end at fixed card 8 places, fixed card 8 is arranged on cylinder barrel 1 middle part, is used for fixing oil inlet passage 4; Said piston rod comprises bar portion 9 and head 10, and the part that bar portion 9 is connected with head 10 is a shoulder 11, and said shoulder 11 comprises two semi-circular card keys 12.
It will be recognized by those skilled in the art, under the prerequisite that does not depart from protection scope of the present invention, can carry out various modifications, variation and combination, and think that this modification, variation and combination are within the scope of originality thought above-mentioned embodiment.
Claims (1)
1. an excavator swing arm oil cylinder comprises cylinder barrel (1), cylinder bottom (2), piston, oil inlet passage (4) and piston rod (6), and cylinder bottom (2) is arranged on the bottom of cylinder barrel (1); And with cylinder barrel (1) sealing, piston moves back and forth in cylinder barrel (1), moves back and forth thereby drive coupled piston rod (6); It is characterized in that said oil inlet passage (4) is through being socketed in the fairlead (7) of cylinder barrel (1) opening part, oil inlet passage (4) prolongs cylinder barrel (1) and extends to cylinder bottom (2) direction; The terminal end located in fixed card (8); Fixed card (8) is arranged on cylinder barrel (1) middle part, is used for fixing oil inlet passage (4), and said piston rod comprises bar portion (9) and head (10); The part that bar portion (9) is connected with head (10) is shoulder (11), and said shoulder (11) comprises two semi-circular card keys (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096289 CN202577396U (en) | 2012-03-14 | 2012-03-14 | Boom cylinder of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096289 CN202577396U (en) | 2012-03-14 | 2012-03-14 | Boom cylinder of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202577396U true CN202577396U (en) | 2012-12-05 |
Family
ID=47246825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220096289 Expired - Fee Related CN202577396U (en) | 2012-03-14 | 2012-03-14 | Boom cylinder of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202577396U (en) |
-
2012
- 2012-03-14 CN CN 201220096289 patent/CN202577396U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130314 |