CN105298978A - Tensile force floating buffering vertical mill hydraulic oil cylinder - Google Patents

Tensile force floating buffering vertical mill hydraulic oil cylinder Download PDF

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Publication number
CN105298978A
CN105298978A CN201510811775.1A CN201510811775A CN105298978A CN 105298978 A CN105298978 A CN 105298978A CN 201510811775 A CN201510811775 A CN 201510811775A CN 105298978 A CN105298978 A CN 105298978A
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CN
China
Prior art keywords
piston
piston rod
cylinder
floating buffer
rod
Prior art date
Application number
CN201510811775.1A
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Chinese (zh)
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CN105298978B (en
Inventor
陈新
张鹰
管菊香
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常州海宏液压设备有限公司
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Priority to CN201510811775.1A priority Critical patent/CN105298978B/en
Publication of CN105298978A publication Critical patent/CN105298978A/en
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Publication of CN105298978B publication Critical patent/CN105298978B/en

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Abstract

The invention relates to the technical field of hydraulic oil cylinders, in particular to a tensile force floating buffering vertical mill hydraulic oil cylinder. The tensile force floating buffering vertical mill hydraulic oil cylinder comprises a cylinder body, a fixed piston, a piston rod and a guide sleeve. One end of the cylinder body is fixedly provided with an end cover. The piston is fixed to one end of the piston rod. The other end of the piston rod is sleeved with the guide sleeve. The guide sleeve is fixedly arranged at the other end of the cylinder body. The piston rod is further sleeved with a floating buffering piston. The floating buffering piston is located between the fixed piston and the guide sleeve. A disc spring is further arranged between the floating buffering piston and the fixed piston. The outer ring of the piston rod is provided with a clamping table for preventing the floating buffering piston from moving to the other end of the piston rod. By the adoption of the tensile force floating buffering vertical mill hydraulic oil cylinder, the floating buffering piston is additionally arranged in a cavity with a rod, the ascending speed of hydraulic oil pressure of the cavity with the rod can be lowered, impact between the two pistons is avoided, and a certain buffering effect can be achieved through the disc spring when the air cavity air pressure is insufficient.

Description

Pulling force floating buffer Vertical Mill hydraulic jack

Technical field

The present invention relates to technical field of hydraulic oil cylinder, particularly relate to a kind of pulling force floating buffer Vertical Mill hydraulic jack.

Background technique

Hydraulic jack is the actuator in hydraulic system, hydraulic energy is converted to the energy conversion device of the mechanical energy of linear reciprocating motion, is generally made up of cylinder body, piston, piston rod and cylinder cap etc.Vertical Mill oil cylinder is a similar hydraulic spring grease cup operationally, when the passive tension of oil cylinder, rod chamber volume-diminished, hydraulic oil flows out from rod chamber hydraulic fluid port and enters accumulator, cushions oil cylinder, rod chamber pressure can improve, when passive tensile impact is excessive, long, due to the restriction of hydraulic fluid port latus rectum, hydraulic oil can not flow out rapidly, rod chamber pressure increases excessive, too fast, can cause damaging rod seal, piston rod, hanger etc.

Summary of the invention

The technical problem to be solved in the present invention is: in order to solve in prior art due to the restriction of hydraulic fluid port latus rectum, hydraulic oil can not flow out rapidly, oil cylinder cavity pressure increases excessive, too fast, the technical problem that rod seal, piston rod, hanger etc. can be caused to damage, the invention provides a kind of pulling force floating buffer Vertical Mill hydraulic jack.

The technical solution adopted for the present invention to solve the technical problems is: a kind of pulling force floating buffer Vertical Mill hydraulic jack, comprise cylinder body, fixed piston, piston rod and guide sleeve, one end of cylinder body is installed with end cap, piston is fixed on one end of piston rod, fixed piston will be divided into rod chamber and rodless cavity in cylinder body, guide sleeve is sleeved on the other end of piston rod, and guide sleeve is fixedly mounted on the other end of cylinder body, described piston rod is also set with floating buffer piston, described floating buffer piston is between fixed piston and guide sleeve, also disc spring is provided with between described floating buffer piston and fixed piston, the outer ring of piston rod offers the chuck of moving to the piston rod the other end for limiting floating buffer piston, air flue is offered in piston rod, the suction port be connected with air flue is offered outside the other end of piston rod, offer outside one end of piston rod towards the air outlet of disc spring, described air outlet is connected with air flue.

For the ease of oil-feed and oil extraction, as preferably, described end cap offers the filler opening be connected with rodless cavity, cylinder body offers the oil outlet be connected with rod chamber.

In order to avoid fluid is revealed, inner ring and the outer ring of described floating buffer piston are equipped with seal ring.

In order to ensure that floating buffer piston assembly normally works, as preferably, between described floating buffer piston and fixed piston, be filled with the gas identical with rod chamber working pressure.

The invention has the beneficial effects as follows, pulling force floating buffer Vertical Mill hydraulic jack of the present invention, a floating buffer piston is increased in beam hanger chamber, when fixed piston rod is subject to the tensile impact of increase suddenly, rod chamber hydraulic oil is not also got rid of in time, when internal pressure exceedes working pressure, floating buffer piston can be rapidly to fixed piston direction and move, the rate of climb of rod chamber hydraulic fluid pressure can be reduced, disc spring is compressed simultaneously, thrust increases, and can avoid the impact between two-piston, and disc spring can also have certain cushioning effect when air cavity air pressure is not enough.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the structural representation of the optimum embodiment of the present invention.

In figure: 1, cylinder body, 11, rod chamber, 12, rodless cavity, 13, oil outlet, 2, fixed piston, 3, piston rod, 31, chuck, 32, air flue, 33, suction port, 34, air outlet, 4, guide sleeve, 5, end cap, 51, filler opening, 6, floating buffer piston, 7, disc spring, 8, seal ring.

Embodiment

In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.

As shown in Figure 1, the optimum embodiment of the present invention, a kind of pulling force floating buffer Vertical Mill hydraulic jack, comprise cylinder body 1, fixed piston 2, piston rod 3 and guide sleeve 4, one end of cylinder body 1 is installed with end cap 5, piston 2 is fixed on one end of piston rod 3, fixed piston 2 will be divided into rod chamber 11 and rodless cavity 12 in cylinder body 1, guide sleeve 4 is sleeved on the other end of piston rod 3, and guide sleeve 4 is fixedly mounted on the other end of cylinder body 1, piston rod 3 is also set with floating buffer piston 6, floating buffer piston 6 is between fixed piston 2 and guide sleeve 4, disc spring 7 is also provided with between floating buffer piston 6 and fixed piston 2, the outer ring of piston rod 3 offers the chuck 31 of moving to piston rod 3 the other end for limiting floating buffer piston 6, air flue 32 is offered in piston rod 3, the suction port 33 be connected with air flue 32 is offered outside the other end of piston rod 3, offer towards the air outlet 34 of disc spring 7 outside one end of piston rod 3, air outlet 34 is connected with air flue 32.End cap 5 offers the filler opening 51 be connected with rodless cavity 12, cylinder body 1 offers the oil outlet 13 be connected with rod chamber 11.The inner ring of floating buffer piston 6 and outer ring are equipped with seal ring 8.The gas identical with rod chamber 11 working pressure is filled with between floating buffer piston 6 and fixed piston 2.

In rod chamber 11, increase a floating buffer piston 6 (can only move in restriction stroke, namely be fixed between piston 2 and chuck 31), piston space has disc spring 7, and is full of the nitrogen identical with rod chamber 11 working pressure at piston space.When oil cylinder normally works, floating buffer piston 6 is away from fixed piston 2 position, and air cavity volume is maximum.When cylinder piston rod 3 is subject to the tensile impact of increase suddenly, rod chamber 11 hydraulic oil is not also got rid of in time, time internal pressure exceedes working pressure, floating buffer piston 6 can be rapidly to fixed piston 2 direction and move, can reduce the rate of climb of rod chamber 11 hydraulic fluid pressure, disc spring 7 is compressed simultaneously, and thrust increases, can avoid the impact between two-piston, disc spring 7 can also have certain cushioning effect when air cavity air pressure is not enough.

With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.

Claims (4)

1. a pulling force floating buffer Vertical Mill hydraulic jack, comprise cylinder body (1), fixed piston (2), piston rod (3) and guide sleeve (4), one end of cylinder body (1) is installed with end cap (5), piston (2) is fixed on one end of piston rod (3), fixed piston (2) will be divided into rod chamber (11) and rodless cavity (12) in cylinder body (1), guide sleeve (4) is sleeved on the other end of piston rod (3), and guide sleeve (4) is fixedly mounted on the other end of cylinder body (1), it is characterized in that: described piston rod (3) is also set with floating buffer piston (6), described floating buffer piston (6) is positioned between fixed piston (2) and guide sleeve (4), disc spring (7) is also provided with between described floating buffer piston (6) and fixed piston (2), the outer ring of piston rod (3) offers the chuck (31) of moving to piston rod (3) the other end for limiting floating buffer piston (6), air flue (32) is offered in piston rod (3), the suction port (33) be connected with air flue (32) is offered outside the other end of piston rod (3), offer outside one end of piston rod (3) towards the air outlet of disc spring (7) (34), described air outlet (34) is connected with air flue (32).
2. pulling force floating buffer Vertical Mill hydraulic jack as claimed in claim 1, it is characterized in that: described end cap (5) offers the filler opening (51) be connected with rodless cavity (12), cylinder body (1) offers the oil outlet (13) be connected with rod chamber (11).
3. pulling force floating buffer Vertical Mill hydraulic jack as claimed in claim 1, is characterized in that: inner ring and the outer ring of described floating buffer piston (6) are equipped with seal ring (8).
4. pulling force floating buffer Vertical Mill hydraulic jack as claimed in claim 1, is characterized in that: be filled with the gas identical with rod chamber (11) working pressure between described floating buffer piston (6) and fixed piston (2).
CN201510811775.1A 2015-11-20 2015-11-20 Pulling force floating buffer Vertical Mill hydraulic jack CN105298978B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510811775.1A CN105298978B (en) 2015-11-20 2015-11-20 Pulling force floating buffer Vertical Mill hydraulic jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510811775.1A CN105298978B (en) 2015-11-20 2015-11-20 Pulling force floating buffer Vertical Mill hydraulic jack

Publications (2)

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CN105298978A true CN105298978A (en) 2016-02-03
CN105298978B CN105298978B (en) 2018-02-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109642592A (en) * 2016-08-05 2019-04-16 康斯博格汽车股份公司 Position actuator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162092A (en) * 1962-07-09 1964-12-22 Tomkins Johnson Company Cylinder cushion structure
JP2006017192A (en) * 2004-06-30 2006-01-19 Hitachi Ltd Cylinder device
CN201554719U (en) * 2009-11-13 2010-08-18 浙江工业大学 High-speed two-out bar hydraulic cylinder cushion device
CN202040133U (en) * 2011-02-21 2011-11-16 平高集团有限公司 Pressure slow increasing device
CN202510457U (en) * 2012-03-30 2012-10-31 董绍永 Buffer air cylinder
CN103062271A (en) * 2013-01-30 2013-04-24 苏州萃智新技术开发有限公司 Improved shock attenuation device
CN104074836A (en) * 2014-06-30 2014-10-01 南京蒙福液压机械有限公司 High speed hydraulic cylinder buffer mechanism
CN205117887U (en) * 2015-11-20 2016-03-30 常州海宏液压设备有限公司 Hydraulic cylinder is ground immediately to unsteady buffering of pulling force

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162092A (en) * 1962-07-09 1964-12-22 Tomkins Johnson Company Cylinder cushion structure
JP2006017192A (en) * 2004-06-30 2006-01-19 Hitachi Ltd Cylinder device
CN201554719U (en) * 2009-11-13 2010-08-18 浙江工业大学 High-speed two-out bar hydraulic cylinder cushion device
CN202040133U (en) * 2011-02-21 2011-11-16 平高集团有限公司 Pressure slow increasing device
CN202510457U (en) * 2012-03-30 2012-10-31 董绍永 Buffer air cylinder
CN103062271A (en) * 2013-01-30 2013-04-24 苏州萃智新技术开发有限公司 Improved shock attenuation device
CN104074836A (en) * 2014-06-30 2014-10-01 南京蒙福液压机械有限公司 High speed hydraulic cylinder buffer mechanism
CN205117887U (en) * 2015-11-20 2016-03-30 常州海宏液压设备有限公司 Hydraulic cylinder is ground immediately to unsteady buffering of pulling force

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109642592A (en) * 2016-08-05 2019-04-16 康斯博格汽车股份公司 Position actuator

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