CN202768523U - Bi-directional automatic buffering hydraulic oil cylinder - Google Patents

Bi-directional automatic buffering hydraulic oil cylinder Download PDF

Info

Publication number
CN202768523U
CN202768523U CN 201220412807 CN201220412807U CN202768523U CN 202768523 U CN202768523 U CN 202768523U CN 201220412807 CN201220412807 CN 201220412807 CN 201220412807 U CN201220412807 U CN 201220412807U CN 202768523 U CN202768523 U CN 202768523U
Authority
CN
China
Prior art keywords
cylinder
bent passage
piston rod
hydraulic oil
slide bar
Prior art date
Application number
CN 201220412807
Other languages
Chinese (zh)
Inventor
张�杰
廖明军
赵光
张志�
李保忠
李县军
姜娜敏
Original Assignee
徐州徐工挖掘机械有限公司
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 徐州徐工挖掘机械有限公司 filed Critical 徐州徐工挖掘机械有限公司
Priority to CN 201220412807 priority Critical patent/CN202768523U/en
Application granted granted Critical
Publication of CN202768523U publication Critical patent/CN202768523U/en

Links

Abstract

The utility model discloses a bi-directional automatic buffering hydraulic oil cylinder which comprises a piston rod, a plug, a piston and a cylinder. The hydraulic oil cylinder further comprises a front limiting plate, a front sliding rod, a front spring, a front spacer sleeve, bending channels, a back spacer sleeve, a back sliding rod, a back spring and a back limiting plate. According to the hydraulic oil cylinder, the front limiting plate and the back limiting plate are respectively arranged at the front end and the back end of the piston rod, and meanwhile a plurality of bending channels are arranged inside the piston rod. When the hydraulic oil cylinder reaches the top of the cylinder or the bottom of the cylinder, due to the fact that the diameter of a groove column at the front end of the front sliding rod or the back sliding rod is 4-5mm larger than that of a front plugging through hole and that of a back plugging through hole, and accordingly a gap is formed, and smoothness of the bending channels is guaranteed. Under the function of pressure, hydraulic oil inside a high-pressure oil chamber partially enters a low-pressure oil chamber, differential pressure at two ends of the hydraulic oil cylinder is reduced, and accordingly the telescopic speed of the oil cylinder is reduced, collision caused when the piston of the cylinder returns to a cylinder bottom is effectively prevented, service life of the hydraulic oil cylinder is prolonged, and stability of a working device is further improved.

Description

Two-way automatic buffer hydraulic jack

Technical field

The utility model relates to a kind of hydraulic jack, specifically a kind of two-way automatic buffer hydraulic jack.

Background technique

The hydraulic jack that present machinery industry is used, usually there is not pooling feature, collision in various degree can occur during the oil cylinder stroke incoming terminal, not only oil cylinder is produced certain damage, the stability, the especially digger operating device that affect simultaneously hydraulic jack are the most obvious, be subjected to the impact of equipment self inertia, entirely stretch or the full time receiving at oil cylinder, the device of the work function of tonic chord can rock front and back, has a strong impact on the stability of digger operating device.Most producers take to be pressed buffering in process of production for this reason, namely alleviate the oil cylinder stretching speed by reducing Extraction rate, but go out oil pocket hydraulic oil and present high pressure conditions, and to oil cylinder generation effect, make piston rod output bounce-back trend, cause equipment to produce vibration, not can solve the vibration that equipment produces because of inertia.

Summary of the invention

For the problem that above-mentioned prior art exists, the utility model provides a kind of two-way automatic buffer hydraulic jack, reduces vibration, prolongs the working life of hydraulic jack, further improves the stability of digger operating device.

To achieve these goals, the technical solution adopted in the utility model is: a kind of two-way automatic buffer hydraulic jack, comprise piston rod, stop up, piston and cylinder barrel, also comprise the front limit plate, front slide bar, preposition spring, front interstage sleeve, bent passage, rear interstage sleeve, rear slide bar, rear spring and rear limit stop plate, the piston rod front-end and back-end have groove, piston rod inside is provided with many bent passage, the front and back outlet of bent passage is separately positioned on the bottom portion of groove of piston rod front-end and back-end, front is set in the front end groove of piston rod, the front end exit of corresponding bent passage has through hole, through-hole diameter than bent passage before the little 4-5MM of outlet diameter, front slide bar leading portion end is provided with screw thread, cooperate with the front limit plate, the rear end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage, the large 4-5MM of through-hole diameter that diameter puts out than front, than the little 3-4MM of outlet diameter before the bent passage, preposition spring housing is on front slide bar, one end cooperates with the front limit plate, the other end cooperates with front interstage sleeve, backstop is set in the rear end groove of piston rod, the back outlet of corresponding bent passage has through hole, through-hole diameter than bent passage after the little 4-5MM of outlet diameter, rear slide bar back segment end is provided with screw thread, cooperates with rear position margining plate, and front end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage, the large 4-5MM of through-hole diameter that diameter puts out than backstop, than the little 3-4MM of outlet diameter after the bent passage, rear spring is enclosed within on the rear slide bar, one end cooperates with rear position margining plate, and the other end cooperates with rear interstage sleeve.

Limiting board before and after the utility model arranges by the front end and back end at piston rod, simultaneously open a plurality of bent passage in piston rod inside, in the time of the top of installing the arrival cylinder barrel or bottom, front limit plate or rear position margining plate are respectively by touching end extruding, slide bar stretches into bent passage before and after driving, because the groove cylinder of front and back slide bar front end stops up the large 4-5MM of through-hole diameter than front and back, the space appears thereby form, thereby the front and back that guaranteed bent passage are unobstructed, because pressure-acting, the hydraulic oil part enters the low pressure oil pocket by through hole in the high-voltage oil cavity, reduced two ends pressure reduction, thereby reduced the oil cylinder stretching speed, prevented that effectively oil cylinder piston from getting back to cylinder bottom and producing collision, prolong the working life of hydraulic jack, further improved the stability of equipment.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Among the figure: 1, piston rod, 2, the front limit plate, 3, front slide bar, 4, preposition spring, 5, front interstage sleeve, 6, stop up, 7, piston, 8, bent passage, 9, rear interstage sleeve, 10, rear slide bar, 11, rear spring, 12, rear limit stop plate, 13, cylinder barrel.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1: to achieve these goals, the technical solution adopted in the utility model is: a kind of two-way automatic buffer hydraulic jack, comprise piston rod 1, stop up 6, piston 7 and cylinder barrel 13, also comprise front limit plate 2, front slide bar 3, preposition spring 4, front interstage sleeve 5, bent passage 8, rear interstage sleeve 9, rear slide bar 10, rear spring 11 and rear limit stop plate 12, piston rod 1 front-end and back-end have groove, piston rod 1 inside is provided with many bent passage 8, the front and back outlet of bent passage 8 is separately positioned on the bottom portion of groove of piston rod 1 front-end and back-end, front interstage sleeve 5 is arranged in the front end groove of piston rod 1, the front end exit of corresponding bent passage 8 has through hole, through-hole diameter is than the little 4-5MM of bent passage 8 front outlet diameters, front slide bar 3 leading portion ends are provided with screw thread, cooperate with front limit plate 3, the rear end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage 8, diameter is than the large 4-5MM of through-hole diameter that opens on the front interstage sleeve 5, than the little 3-4MM of bent passage 8 front outlet diameters, preposition spring 4 is enclosed within on the front slide bar 3, one end cooperates with front limit plate 2, the other end cooperates with front interstage sleeve 6, rear interstage sleeve 9 is arranged in the rear end groove of piston rod 1, the back outlet of corresponding bent passage 8 has through hole, through-hole diameter is than the little 4-5MM of bent passage 8 rear outlet diameters, rear slide bar 10 back segment ends are provided with screw thread, cooperate with rear position margining plate (12), front end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage 8, diameter is than the large 4-5MM of through-hole diameter that opens on the rear interstage sleeve 9, than the little 3-4MM of bent passage 8 rear outlet diameters, rear spring 11 is enclosed within on the rear slide bar 10, one end cooperates with rear position margining plate 12, and the other end cooperates with rear interstage sleeve 9.In order to guarantee working life, it is material that front slide bar 3 and rear slide bar 10 materials all adopt the 48# steel.

In the course of the work, move as example to cylinder barrel 13 bottoms take piston 7 drive obstructions 6 and single unit system, when rear position margining plate 12 moves to cylinder barrel 13 bottom, stopped by cylinder barrel 13 bottoms, rear slide bar 10 keeps static, piston rod 1 continues mobile, rear spring 11 is compressed, and slide bar 10 1 ends go deep in the bent passage 8 of piston rod 1, two ends through hole conducting, hydraulic oil will flow to the low pressure oil pocket from high-voltage oil cavity, thereby play the effect of buffering.When piston rod 1 one ends arrived at cylinder barrel 13 bottom, rear position margining plate 12 was forced into piston rod 1 and reserves in the chamber, blocks simultaneously through hole, prevents that two chamber hydraulic oil from circulating mutually; When piston touches that oppositely move the rear end at the end, rear position margining plate 12 is set back by rear spring 11 effects, because this moment=opposite side is the low pressure oil pocket, the opposite side outlet of bent passage 8 is blocked by the groove cylinder of front slide bar 3 ends under preposition spring 4 effects, and two chamber hydraulic oil can not circulate mutually.When current limiting board 2 arrived at cylinder barrel 13 front end, it was the same to arrive at cylinder barrel 13 rear ends 2 situations with rear position margining plate 12, bent passage 8 conductings, thus play buffer function.

Claims (2)

1. two-way automatic buffer hydraulic jack, comprise piston rod (1), stop up (6), piston (7) and cylinder barrel (13), it is characterized in that, also comprise front limit plate (2), front slide bar (3), preposition spring (4), front interstage sleeve (5), bent passage (8), rear interstage sleeve (9), rear slide bar (10), rear spring (11) and rear limit stop plate (12), described piston rod (1) front-end and back-end have groove, piston rod (1) inside is provided with many bent passage (8), the front and back outlet of bent passage (8) is separately positioned on the bottom portion of groove of piston rod (1) front-end and back-end, described front interstage sleeve (5) is arranged in the front end groove of piston rod (1), the front end exit of corresponding bent passage (8) has through hole, through-hole diameter is than the little 4-5MM of the front outlet diameter of bent passage (8), described front slide bar (3) leading portion end is provided with screw thread, cooperate with front limit plate (3), the rear end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage (8), diameter is than the large 4-5MM of through-hole diameter that opens on the front interstage sleeve (5), than the little 3-4MM of the front outlet diameter of bent passage (8), described preposition spring (4) is enclosed within on the front slide bar (3), one end and front limit plate (2)) cooperate, the other end cooperates with front interstage sleeve (6), described rear interstage sleeve (9) is arranged in the rear end groove of piston rod (1), the back outlet of corresponding bent passage (8) has through hole, through-hole diameter is than the rear little 4-5MM of outlet diameter of bent passage (8), described rear slide bar (10) back segment end is provided with screw thread, cooperate with rear position margining plate (12), front end is provided with the groove cylinder, the groove cylinder is arranged in the bent passage (8), diameter is than the large 4-5MM of through-hole diameter that opens on the rear interstage sleeve (9), than the little 3-4MM of outlet diameter after the bent passage (8), described rear spring (11) is enclosed within on the rear slide bar (10), one end and rear position margining plate (12)) cooperate, the other end cooperates with rear interstage sleeve (9).
2. two-way automatic buffer hydraulic jack according to claim 1, it is material that described front slide bar (3) and rear slide bar (10) material all adopt the 48# steel.
CN 201220412807 2012-08-17 2012-08-17 Bi-directional automatic buffering hydraulic oil cylinder CN202768523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220412807 CN202768523U (en) 2012-08-17 2012-08-17 Bi-directional automatic buffering hydraulic oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220412807 CN202768523U (en) 2012-08-17 2012-08-17 Bi-directional automatic buffering hydraulic oil cylinder

Publications (1)

Publication Number Publication Date
CN202768523U true CN202768523U (en) 2013-03-06

Family

ID=47775103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220412807 CN202768523U (en) 2012-08-17 2012-08-17 Bi-directional automatic buffering hydraulic oil cylinder

Country Status (1)

Country Link
CN (1) CN202768523U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615429A (en) * 2013-12-13 2014-03-05 三一汽车起重机械有限公司 Hydraulic oil cylinder
CN103759002A (en) * 2013-12-31 2014-04-30 中冶海水淡化投资有限公司 Water hydraulic cylinder piston with safety device
CN104097906A (en) * 2014-07-18 2014-10-15 杭州中亚机械股份有限公司 Damping limiting stopper
CN104121251A (en) * 2014-07-17 2014-10-29 安徽易奇软件科技有限公司 Buffering device for hydraulic cylinder
CN107747573A (en) * 2017-09-26 2018-03-02 铜陵汇宇实业有限公司 A kind of Telescopic protection system
CN108679041A (en) * 2018-07-12 2018-10-19 长兴宏力机械科技有限公司 A kind of buffer type hydraulic oil cylinder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615429A (en) * 2013-12-13 2014-03-05 三一汽车起重机械有限公司 Hydraulic oil cylinder
CN103615429B (en) * 2013-12-13 2016-08-17 三一汽车起重机械有限公司 Hydraulic jack
CN103759002A (en) * 2013-12-31 2014-04-30 中冶海水淡化投资有限公司 Water hydraulic cylinder piston with safety device
CN103759002B (en) * 2013-12-31 2016-07-06 中冶海水淡化投资有限公司 The fool proof water hydraulic cylinder piston of a kind of band
CN104121251A (en) * 2014-07-17 2014-10-29 安徽易奇软件科技有限公司 Buffering device for hydraulic cylinder
CN104097906A (en) * 2014-07-18 2014-10-15 杭州中亚机械股份有限公司 Damping limiting stopper
CN104097906B (en) * 2014-07-18 2016-05-11 杭州中亚机械股份有限公司 A kind of damping stop
CN107747573A (en) * 2017-09-26 2018-03-02 铜陵汇宇实业有限公司 A kind of Telescopic protection system
CN108679041A (en) * 2018-07-12 2018-10-19 长兴宏力机械科技有限公司 A kind of buffer type hydraulic oil cylinder

Similar Documents

Publication Publication Date Title
CN104676122B (en) Three-direction impact-resistant support and hanger
CN101364498B (en) Hydraulic operating mechanism for medium/high voltage circuit breaker
CN202984403U (en) Numerical control punch x axis and y axis mobile device
EP2208911A1 (en) Advanced triple piston damper
CN203532179U (en) Hydraulic driving type mud sucking and discharging device
CN202099907U (en) Crossbeam connector of aluminum curtain wall
CN102108991B (en) Hydraulic cylinder, hydraulic buffer system, excavator and concrete pump truck
CN103256275B (en) A kind of double acting Hydraulic Cylinder
CN108050123B (en) Two-way Hydraulic Cylinder
CN104670817A (en) Pushing mechanism
CN202209329U (en) Double-piston-rod relative motion oil cylinder
CN103406925B (en) Parallel shear mechanism
CN201636116U (en) Gap cushioning hydraulic cylinder
US10077173B2 (en) Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm
CN103586337A (en) Damping die punch
CN203412858U (en) Flushing valve for hydraulic motor of closed system
CN203532406U (en) Multi-stage double-action reinforced hydraulic cylinder
CN105715612A (en) Throttling buffer cylinder with integrated buffer cylinder bottom
CN202418396U (en) Bidirectional hydraulic buffer
CN101949398A (en) Single-action hydraulic oil cylinder and paver with same
CN107676331A (en) A kind of hydraulic jack for being used to discharge
CN104989778A (en) Novel buffer
CN103573749B (en) Buffering hydraulic cylinder
CN203471447U (en) Unclamping cylinder
CN205533530U (en) Throttle buffering hydro -cylinder with at bottom of integral type cushioned cylinder

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant