CN203476909U - Rapid-reset hydraulic oil cylinder - Google Patents

Rapid-reset hydraulic oil cylinder Download PDF

Info

Publication number
CN203476909U
CN203476909U CN201320623589.1U CN201320623589U CN203476909U CN 203476909 U CN203476909 U CN 203476909U CN 201320623589 U CN201320623589 U CN 201320623589U CN 203476909 U CN203476909 U CN 203476909U
Authority
CN
China
Prior art keywords
cylinder
spring
hole
piston
center hole
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
Application number
CN201320623589.1U
Other languages
Chinese (zh)
Inventor
辛祖兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YIDU XIFU MACHINERY Co Ltd
Original Assignee
YIDU XIFU MACHINERY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YIDU XIFU MACHINERY Co Ltd filed Critical YIDU XIFU MACHINERY Co Ltd
Priority to CN201320623589.1U priority Critical patent/CN203476909U/en
Application granted granted Critical
Publication of CN203476909U publication Critical patent/CN203476909U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a rapid-reset hydraulic oil cylinder which comprises a cylinder bottom, a cylinder body, a piston, a piston rod and a cylinder cover. A protrusion is arranged on the inner bottom surface of the cylinder bottom, a center hole is formed in the position, corresponding to the protrusion, of the piston rod, a pull rod is installed in the center hole, one end of a spring is connected with the protrusion, the other end of the spring is connected with the pull rod, the protrusion is provided with a through hole in the radial direction, and a bolt for fixing the spring is arranged in the through hole. A fixing hole for fixing the spring is formed in one end of the pull rod in the radial direction, and a bolt for fixing the spring is arranged in the fixing hole; a sealing end cover is arranged on the outer side of the center hole and is in threaded connection with the center hole; a groove is formed in the bottom of the sealing end cover; a cross groove or a straight-line-shaped groove is formed in the bottom of the groove. According to the rapid-reset hydraulic oil cylinder, the spring is fixed reliably, and the center hole cannot leak oil.

Description

A kind of Rapid reset hydraulic jack
Technical field
The utility model relates to a kind of hydraulic jack cover, specifically, relates to a kind of Rapid reset hydraulic jack.
Background technique
Oil hydraulic cylinder is the executive component in hydraulic system, and it is converted to straight-line mechanical energy by hydraulic energy.If the motion of oil hydraulic cylinder both direction all relies on hydraulic oil to realize, such oil hydraulic cylinder is called double-acting hydraulic cylinder, if the motion of the some directions of oil hydraulic cylinder is to rely on deadweight or external force to realize, this class oil hydraulic cylinder is known as single-acting formula oil hydraulic cylinder.Current single-acting formula oil hydraulic cylinder comprises cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is arranged on the cylinder body the other end, piston is arranged in cylinder body, piston rod one end is stretched in cylinder body and is connected with piston by cylinder cap, in cylinder body, between piston and cylinder bottom, form an oil pocket, on cylinder bottom, be provided with an oil transportation hole and be communicated with oil pocket; Single-acting formula oil hydraulic cylinder is used in lifting equipment conventionally.In equipment lifting when work,, lifting hydraulic cylinder relies on the thrust of producing to input hydraulic pressure oil in oil pocket that goods is given rise to certain height; After removal goods, stop to oil hydraulic cylinder for pressure oil, in hydraulic cylinder piston rod dependence deadweight withdrawal oil hydraulic cylinder.Because there is certain frictional force during hydraulic cylinder piston rod retraction, so piston rod can not quickly and reliably be retracted.For this reason, the common way of people is on piston rod, to increase counterweight, relies on the weight of counterweight to carry out overcome friction, realizes piston rod and quickly and reliably retracts.The mode of this counterweight, although also can deal with problems, owing to having increased the weight of equipment, has power loss during lifting, virtually increased the cost of equipment.
Chinese patent 201220604740.2, a kind of Rapid reset hydraulic jack, announced a kind of cylinder structure: its concrete technological scheme is: a kind of Rapid reset hydraulic jack, comprise cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is arranged on the cylinder body the other end, piston is arranged in cylinder body, piston rod one end is stretched in cylinder body and is connected with piston by cylinder cap, in cylinder body, between piston and cylinder bottom, form an oil pocket, on cylinder bottom, be provided with an oil transportation hole and be communicated with oil pocket; It is characterized in that it also comprises spring and pull bar, be provided with a fixed block on cylinder bottom inner bottom surface, corresponding fixed block is provided with a center hole on piston rod, and pull bar is arranged on center hole bottom, and spring one end is connected with fixed block, and the spring the other end is connected with pull bar.
This structure relies on the pulling force automatic drawing back piston rod of spring, and spring is fixing reliable not, and fixed structure is complicated, and the sealing of center hole is reliable not, and spring likely comes off from fixing device, and the phenomenon of leakage of oil may appear in center hole.
Model utility content
For above-mentioned deficiency of the prior art, it is a kind of simple in structure that the utility model provides, and spring is fixing reliable, the oil tight a kind of Rapid reset hydraulic jack of center hole.
Technical solution adopted in the utility model is:
A kind of Rapid reset hydraulic jack, comprise cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is arranged on the cylinder body the other end, piston is arranged in cylinder body, piston rod one end is stretched in cylinder body and is connected with piston by cylinder cap, in cylinder body, between piston and cylinder bottom, form an oil pocket, on cylinder bottom, being provided with an oil transportation hole is communicated with it and also comprises spring and pull bar with oil pocket, at cylinder bottom inner bottom surface, be provided with projection, corresponding projection is provided with a center hole on piston rod, pull bar is arranged in center hole, spring one end is connected with projection, the spring the other end is connected with pull bar, described projection has been disposed radially through hole, in through hole, be provided with the bolt of fixing spring, tie rod end is disposed radially the fixed hole of fixing spring, is provided with the bolt of fixing spring in fixed hole, the arranged outside of center hole has end cover, end cover with center hole for being threaded, the bottom of end cover is provided with groove, the bottom of groove is provided with cross recess or straight groove.
The beneficial effect of the relative prior art of the utility model:
A kind of Rapid reset hydraulic jack of the utility model, projection has been disposed radially through hole, is provided with the bolt of fixing spring in through hole; Tie rod end is disposed radially the fixed hole of fixing spring, is provided with the bolt of fixing spring in fixed hole; The arranged outside of center hole has end cover, and spring is fixing reliable, and center hole is oil-proof.
Accompanying drawing explanation
Fig. 1 is a kind of Rapid reset hydraulic jack of the utility model structural representation.
Critical piece symbol description in accompanying drawing:
In figure:
1, cylinder bottom 2, cylinder body
3, piston 4, piston rod
5, pull bar 6, end cover
7, groove 8, cylinder cap
9, spring 10, bolt
11, projection 12, oil pocket
13, center hole.
Embodiment
Referring to drawings and Examples, the utility model is described in detail:
Accompanying drawing 1 is known, a kind of Rapid reset hydraulic jack, comprise cylinder bottom 1, cylinder body 2, piston 3, piston rod 4 and cylinder cap 8, cylinder bottom 1 is welded on cylinder body 2 one end, cylinder cap 8 is arranged on cylinder body 2 the other ends, and piston 3 is arranged in cylinder body 2, and piston rod 4 one end are stretched in cylinder body 2 and are connected with piston 3 by cylinder cap 8, in cylinder body 2, between piston 3 and cylinder bottom 1, form an oil pocket 12, on cylinder bottom 1, be provided with an oil transportation hole and be communicated with oil pocket; Also comprise spring 9 and pull bar 5, at cylinder bottom 1 inner bottom surface, be provided with projection 11, corresponding projection 11 is provided with a center hole 13 on piston rod 4, pull bar 5 is arranged in center hole 13, spring 9 one end are connected with projection 11, spring 9 the other ends are connected with pull bar 5, and described projection 11 has been disposed radially through hole, are provided with the bolt 10 of fixing spring 9 in through hole; Pull bar 5 ends are disposed radially the fixed hole of fixing spring 9, are provided with the bolt 10 of fixing spring 9 in fixed hole; The arranged outside of center hole 13 has end cover 6, end cover 6 with center hole 13 for being threaded; The bottom of end cover 6 is provided with groove 7; The bottom of groove 7 is provided with cross recess or straight groove.
A kind of Rapid reset hydraulic jack of the utility model, projection has been disposed radially through hole, is provided with the bolt of fixing spring in through hole; Tie rod end is disposed radially the fixed hole of fixing spring, is provided with the bolt of fixing spring in fixed hole; The arranged outside of center hole has end cover, and spring is fixing reliable, and center hole is oil-proof.

Claims (1)

1. a Rapid reset hydraulic jack, comprise cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is arranged on the cylinder body the other end, piston is arranged in cylinder body, piston rod one end is stretched in cylinder body and is connected with piston by cylinder cap, in cylinder body, between piston and cylinder bottom, form an oil pocket, on cylinder bottom, being provided with an oil transportation hole is communicated with it and also comprises spring and pull bar with oil pocket, at cylinder bottom inner bottom surface, be provided with projection, corresponding projection is provided with a center hole on piston rod, pull bar is arranged in center hole, spring one end is connected with projection, the spring the other end is connected with pull bar, it is characterized in that: described projection has been disposed radially through hole, in through hole, be provided with the bolt of fixing spring, tie rod end is disposed radially the fixed hole of fixing spring, is provided with the bolt of fixing spring in fixed hole, the arranged outside of center hole has end cover, end cover with center hole for being threaded, the bottom of end cover is provided with groove, the bottom of groove is provided with cross recess or straight groove.
CN201320623589.1U 2013-10-06 2013-10-06 Rapid-reset hydraulic oil cylinder Expired - Fee Related CN203476909U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320623589.1U CN203476909U (en) 2013-10-06 2013-10-06 Rapid-reset hydraulic oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320623589.1U CN203476909U (en) 2013-10-06 2013-10-06 Rapid-reset hydraulic oil cylinder

Publications (1)

Publication Number Publication Date
CN203476909U true CN203476909U (en) 2014-03-12

Family

ID=50225245

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320623589.1U Expired - Fee Related CN203476909U (en) 2013-10-06 2013-10-06 Rapid-reset hydraulic oil cylinder

Country Status (1)

Country Link
CN (1) CN203476909U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109322871A (en) * 2018-11-30 2019-02-12 湖南协力液压有限公司 A kind of hydraulic cylinder that can automatically reset

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109322871A (en) * 2018-11-30 2019-02-12 湖南协力液压有限公司 A kind of hydraulic cylinder that can automatically reset

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140312

Termination date: 20141006

EXPY Termination of patent right or utility model