CN209324782U - A kind of hydraulic cylinder with stroke adjustment - Google Patents
A kind of hydraulic cylinder with stroke adjustment Download PDFInfo
- Publication number
- CN209324782U CN209324782U CN201920072650.5U CN201920072650U CN209324782U CN 209324782 U CN209324782 U CN 209324782U CN 201920072650 U CN201920072650 U CN 201920072650U CN 209324782 U CN209324782 U CN 209324782U
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- China
- Prior art keywords
- piston rod
- cylinder
- postposition
- adjustment axis
- piston
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Abstract
A kind of hydraulic cylinder with stroke adjustment, cylinder body front end is installed by drive end bearing bracket, piston rod is equipped in cylinder body, piston rod is located at the intracorporal one end installation piston of cylinder, it is installed through drive end bearing bracket and with drive end bearing bracket gap piston rod front end, piston rod posterior center is equipped with cavity, piston centre is equipped with the identical hole of diameter being connected with cavity, external thread type postposition adjustment axis is installed through the cylinder tail center of cylinder body, postposition adjustment axis is fixed on cylinder tail by axle-steel silk circlip, postposition adjusting shaft clearance is installed on hole and cavity is (interior, stop nut is installed in postposition adjustment axis, a stop nut lateral connection at least nut fixed pin, piston rod is equipped with the mounting hole with nut fixed pin clearance fit.The hydraulic cylinder with stroke adjustment of the utility model, internal regulation structure can simplify entire mechanical structure position, and can extend oil cylinder whole service life, and regulatory function can be realized in rotary oil cylinder postposition adjustment axis.
Description
Technical field
The utility model relates to hydraulic cylinder technical fields.
Background technique
With the fast development of economic construction of China, market is in, the high machine such as goliath, excavator, loading machine
The demand of tool equipment is growing.Currently, the high mechanized equipment such as goliath, excavator, loading machine is equipped with act
The engineerings hydraulic cylinders such as liter, push-and-pull, play central role during hoist, loading etc..
Existing stroke regulating structure is mainly external adjusting, installs external connection position additional fixed device, fixed oil cylinder
Total kilometres.When work, piston rod stretches out, and external stroke fixing sleeve is fixed among piston and preceding section lid, is thus completed
The movement such as stroke adjustment.Since cylinder piston rod extexine is chromium plating or technique antirust treatment, external installation is of long duration, is easy
The consequence that corrosion, abrasion etc. seriously affect service life is generated, so that oil cylinder service life reduction.
Another kind is built-in adjustment structure, and stop collar is movably connected among end cap and piston, hard limit is formed, with limit
Piston rod extension elongation processed, since this hard limit is covers on the piston rod, so when carrying out stroke adjustment again, it can only be by a whole set of oil
Cylinder is dismantled, and the limit sleeve for changing new length into just can be carried out the adjusting of new trip.
Utility model content
In order to solve the above problem existing for oil cylinder stroke adjustment structure, the utility model provides a kind of have and goes into tune
The engineering machinery hydraulic cylinder of section.
The utility model technical solution used for the above purpose is: a kind of hydraulic cylinder with stroke adjustment,
Drive end bearing bracket is installed in cylinder body front end, and piston rod is equipped in cylinder body, and piston rod is located at the intracorporal rear end installation piston of cylinder, piston rod front end
It is installed through drive end bearing bracket and with drive end bearing bracket gap, piston rod posterior center is equipped with cavity, and piston centre is equipped with to be connected with cavity
The identical hole of diameter, external thread type postposition adjustment axis is installed through the cylinder tail center of cylinder body, postposition adjustment axis passes through axle-steel
Silk circlip is fixed on cylinder tail, and postposition adjusts shaft clearance and is installed in hole and cavity, and stop nut is installed in postposition adjustment axis, is limited
A position nut lateral connection at least nut fixed pin, piston rod are equipped with the mounting hole with nut fixed pin clearance fit.
The piston rod is sealed with drive end bearing bracket clearance fit and by cylinder piston rod seal ring assembly.
Four nut fixed pins of the stop nut lateral connection, piston rod are equipped with and nut fixed pin clearance fit
Four mounting holes.
The hydraulic cylinder with stroke adjustment of the utility model can will be whole using internal installation, the external structure adjusted
A mechanical structure position simplifies, and can extend oil cylinder whole service life, and adjusting can be realized in rotary oil cylinder postposition adjustment axis
Function, structure designs advantages of simple, small in size, does not increase oil cylinder dead weight, compact-sized, and adjusting does not need to reset outer
It sets or built-in limit sleeve；It since oil cylinder is that stroke is adjustable, is easy when hanged weight to be accurately positioned, makes to adjust etc. what work became
More easily effectively.
Detailed description of the invention
Fig. 1 is the hydraulic cylinder main view sectional structure chart that the utility model has stroke adjustment.
Fig. 2 is part A amplification assumption diagram in Fig. 1.
In figure: 1, rear earrings, 2, cylinder body, 3, piston rod, 4, nut fixed pin, 5, drive end bearing bracket, 6, axle-steel silk circlip, 7,
Stop nut, 8, postposition adjustment axis, 9, cavity, 10, piston.
Specific embodiment
The hydraulic cylinder structure with stroke adjustment of the utility model is as depicted in figs. 1 and 2, including cylinder body 2, piston rod 3,
Drive end bearing bracket 5,8, four nut fixed pins 4 of postposition adjustment axis, axle-steel silk circlip 6 and stop nut 7, the sliding receiving of piston rod 3
In in cylinder body 2,1 clearance fit of postposition adjustment axis is in 2 cylinder tail of cylinder body and is fixed by axle-steel silk circlip 6,5 screw thread of drive end bearing bracket
It is connected on cylinder body 2, piston rod 3 and 5 clearance fit of drive end bearing bracket and is sealed by cylinder piston rod seal ring assembly, run through cylinder body
External thread type postposition adjustment axis 8 is installed at 1 cylinder tail center, and stop nut 7 is threadedly connected in postposition adjustment axis 1, and and spiral shell
Female fixed pin 4 is threadedly coupled, and for 4 clearance fit of nut fixed pin on piston rod 3, stop nut 7 is solid by nut fixed pin 4
Fixed, the inner cavity of oil cylinder is divided into cylinder rod chamber and oil cylinder rodless by earrings 1 after the connection of 8 rear end of postposition adjustment axis, oil cylinder piston 10
Chamber, stroke adjusting device are arranged in rodless cavity, and 1 posterior center of piston rod is equipped with cavity 9, and 10 center of piston is equipped with and cavity 9
The identical hole of the diameter being connected, nut fixed pin is threadedly connected on nut 7 and clearance fit is in the mounting hole of piston rod 3
Interior, 8 clearance fit of postposition adjustment axis is in hole and cavity 9, and two lengths of fit are greater than oil cylinder total kilometres.
Working principle: when increasing stroke length, 8 rear end of postposition adjustment axis is rotated, postposition adjustment axis 8 is made to screw out stop nut
7, so as to shorten length of the postposition adjustment axis 8 in cavity 9, when piston rod 3 promotes, piston 10, piston rod 3 and postposition tune
Relative motion is formed between nodal axisn 8, nut fixed pin 4, piston, to increase stroke, can work as work further towards cylinder tail
When plug 10 is contacted with stop nut 7, stop nut 7 limits piston 10 firmly；When needing to shorten stroke, rotation postposition is adjusted
8 rear end of axis makes 8 precession stop nut 7 of postposition adjustment axis work as work to increase length of the postposition adjustment axis 8 in cavity 9
When stopper rod 3 promotes, piston and cylinder back range are from increase, so as to shorten stroke.
It solves when needing to adjust due to oil cylinder stroke, a whole set of oil cylinder can only be dismantled, change the limit of new length into
It covers the adjusting that just can be carried out new trip or external installation limit sleeve is of long duration, be easy to produce corrosion, abrasion etc. and seriously affect use
The technical problems such as the consequence in service life.In terms of technological design, structure designs advantages of simple, small in size, does not increase oil cylinder dead weight,
Compact-sized, adjusting does not need to reset external or built-in limit sleeve；Saving personnel utilize and manufacturing cost aspect, due to oil
Cylinder is that stroke is adjustable, is easy when hanged weight to be accurately positioned, make to adjust etc. work become more easily effectively.
The utility model is described by embodiment, and those skilled in the art know, practical new not departing from this
In the case where the spirit and scope of type, various changes or equivalence replacement can be carried out to these features and embodiment.In addition, at this
Under the introduction of utility model, it can modify to these features and embodiment to adapt to particular situation and material without taking off
Spirit and scope from the utility model.Therefore, the utility model is not limited to the particular embodiment disclosed, and is owned
The embodiment fallen within the scope of claims hereof belongs to the protection scope of the utility model.
Claims (3)
1. a kind of hydraulic cylinder with stroke adjustment, it is characterised in that: drive end bearing bracket (5) are installed in cylinder body (1) front end, in cylinder body (1)
Equipped with piston rod (3), piston rod (3) is located at the installation of one end in cylinder body (1) piston (10), and front end is run through in piston rod (3) front end
It covers (5) and is installed with drive end bearing bracket (5) gap, piston rod (3) posterior center is equipped with cavity (9), and piston (10) center is equipped with and sky
External thread type postposition adjustment axis (8) are installed at the identical hole of diameter that chamber (9) is connected, the cylinder tail center through cylinder body (1), postposition
Adjustment axis (8) is fixed on cylinder tail by axle-steel silk circlip (6), and postposition adjustment axis (8) gap is installed on hole and cavity (9)
It is interior, stop nut (7) are installed in postposition adjustment axis (8), stop nut (7) lateral connection at least nut fixed pin (4) is living
Stopper rod (3) is equipped with the mounting hole with nut fixed pin (4) clearance fit.
2. a kind of hydraulic cylinder with stroke adjustment according to claim 1, it is characterised in that: the piston rod (3) with
It drive end bearing bracket (5) clearance fit and is sealed by cylinder piston rod seal ring assembly.
3. a kind of hydraulic cylinder with stroke adjustment according to claim 1, it is characterised in that: the stop nut (7)
Four nut fixed pins (4) of lateral connection, piston rod (3) are equipped with four mounting holes with nut fixed pin (4) clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072650.5U CN209324782U (en) | 2019-01-17 | 2019-01-17 | A kind of hydraulic cylinder with stroke adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072650.5U CN209324782U (en) | 2019-01-17 | 2019-01-17 | A kind of hydraulic cylinder with stroke adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209324782U true CN209324782U (en) | 2019-08-30 |
Family
ID=67731367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920072650.5U Active CN209324782U (en) | 2019-01-17 | 2019-01-17 | A kind of hydraulic cylinder with stroke adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209324782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505822A (en) * | 2019-01-17 | 2019-03-22 | 大连诺美液压件有限公司 | A kind of hydraulic cylinder with stroke adjustment |
-
2019
- 2019-01-17 CN CN201920072650.5U patent/CN209324782U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505822A (en) * | 2019-01-17 | 2019-03-22 | 大连诺美液压件有限公司 | A kind of hydraulic cylinder with stroke adjustment |
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