CN206320116U - Hydraulic cylinder with automatic fastening function - Google Patents

Hydraulic cylinder with automatic fastening function Download PDF

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Publication number
CN206320116U
CN206320116U CN201621333136.5U CN201621333136U CN206320116U CN 206320116 U CN206320116 U CN 206320116U CN 201621333136 U CN201621333136 U CN 201621333136U CN 206320116 U CN206320116 U CN 206320116U
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CN
China
Prior art keywords
cylinder
piston
piston rod
self
hydraulic
Prior art date
Application number
CN201621333136.5U
Other languages
Chinese (zh)
Inventor
袁祖辉
何运清
李代军
徐华明
颜新东
黄俊明
Original Assignee
泸州长江液压密封件有限公司
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Application filed by 泸州长江液压密封件有限公司 filed Critical 泸州长江液压密封件有限公司
Priority to CN201621333136.5U priority Critical patent/CN206320116U/en
Application granted granted Critical
Publication of CN206320116U publication Critical patent/CN206320116U/en

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Abstract

The utility model discloses the hydraulic cylinder with automatic fastening function, including cylinder barrel, cylinder bottom, cylinder cap, piston and piston rod, piston is provided with blind hole, buffer unit is provided with blind hole, cylinder bottom is provided with support column, when support column acts on buffer unit, the movement velocity of piston will be forced to slow down, avoid the Fast Collision of piston and cylinder bottom, hydraulic system is played a protective role, piston rod is provided with spring, spring is provided with check lock lever, oil inlet pipe and self-locking grooves are provided with cylinder barrel, when piston rod movement is to certain position, check lock lever will be caught in self-locking grooves due under spring action, when piston rod remain stationary as, realize self-locking, during unblock, hydraulic oil is entered in self-locking grooves by oil inlet pipe, hydraulic oil produce pressure by when check lock lever retract, piston rod can be moved again.

Description

Hydraulic cylinder with automatic fastening function
Technical field
The utility model is related to a kind of mechanical transmission mechanism, and in particular to the hydraulic cylinder with automatic fastening function.
Background technology
Hydraulic drive has the advantages that many protrusions, therefore its application is widely, such as the plastic processing of general industry Machinery, press, lathe etc.;Engineering machinery, building machinery, agricultural machinery, automobile in walking machine etc.;Steel and iron industry is used Metallurgical machinery, lifting device, roll adjusting device etc.;The flood gate and dam installation of building hydraulic engineering, riverbed liter Falling unit, bridge operating mechanism etc.;Power plant turbine arrangements for speed regulation, nuclear power plant etc.;The deck crane tool of ship (winch), fore door, bulkhead valve, stern propeller etc.;The huge antenna control device of special technique, measurement buoy, lifting Revolving stage etc.;The cannon manipulation device of war industry, ship stabilizer, aerial vehicle simulation, the folding and unfolding of undercarriage Apparatus and direction rudder control device etc..Hydraulic cylinder be by hydraulic energy be changed into mechanical energy, do straight reciprocating motion (or swing fortune It is dynamic) hydraulic actuator, its simple in construction, reliable operation is realized with it during reciprocating motion, can remove deceleration device from, and And without drive gap, stable movement, therefore be used widely in various mechanical hydraulic systems.Under many operating modes, , it is necessary to which piston rod steady operation is in current location after hydraulic cylinder piston rod stretching, can neither stretch out to retract, i.e., usual institute All it is that the Median Function for leaning on hydraulicdirectional control valve is realized self-locking or adopted to realize this function on the self-locking said, conventional art With hydraulic lock, but it is due to the leakage of valve, self-locking effect is not ideal enough, or even in large-scale engineering machineries such as crane, excavators In, it may appear that engineering accident;When hydraulic cylinder travel is at the end, piston can collide with front end housing produces impact, not only influences machine The service behaviour of tool equipment, and can damage hydraulic cylinder and other elements of hydraulic system, with very big danger, and it is traditional The buffer unit typically used tries to make oil-discharging cavity inner fluid discharge by the osculum that throttles (or gap), so that oil-discharging cavity fluid Act in the compensator or trimmer pressure of piston oil extraction side, reach buffering effect, but for big inertia under conditions of, because being limited to piston Active area, oil extraction cavity pressure can be raised drastically, and hydraulic cylinder and whole hydraulic system intensity and sealing can be influenceed when serious.
Utility model content
Technical problem to be solved in the utility model is traditional that piston rod is stable at operating position, is used Hydraulicdirectional control valve realizes the locking to piston rod, but but there is the phenomenon of valve leak, it is impossible to stable latching ram Bar, and the way to play for time that uses of collision of conventional buffer piston and cylinder bottom has an impact to the sealing of hydraulic cylinder, it is therefore intended that The hydraulic cylinder with automatic fastening function is provided, the problem of solving the above.
The utility model is achieved through the following technical solutions:
Hydraulic cylinder with automatic fastening function, including cylinder bottom, piston, cylinder barrel, cylinder cap and piston rod, the cylinder barrel with Cylinder bottom is welded, and cylinder cap is by piston seal in cylinder barrel, and piston, which is provided with blind hole, blind hole, is provided with buffer unit, piston and cylinder bottom Between be provided with rodless cavity, cavity is provided between piston and cylinder cap, support column, and support column and cylinder bottom are provided with the rodless cavity Connection, piston rod is located in cylinder barrel, and is connected with piston, and piston rod is also connected with cylinder cap, and spring, spring are additionally provided with piston rod Check lock lever is provided with, check lock lever is squeezed in inner wall of cylinder by spring, inner wall of cylinder is provided with self-locking grooves and oil inlet pipe, oil inlet pipe The groove floor connection of one end and self-locking grooves, the other end is connected with cavity.
Further, oil inlet and oil-out are additionally provided with the cylinder barrel, oil inlet and oil-out are located at piston both sides.
Further, the buffer unit is made up of buffer spring and buffer board, and buffer spring one end is connected with piston, separately One end is connected with buffer board.
Further, the axis of the support column and buffer unit is on same straight line.
Further, dust ring and the second sealing ring are additionally provided between the piston rod and cylinder cap, dust ring and second close Seal covers on the piston rod.
Further, the first sealing ring is provided between the piston and cylinder barrel, the first sealing ring is enclosed within cylinder barrel.
The utility model compared with prior art, has the following advantages and advantages:
1st, the utility model has the hydraulic cylinder of automatic fastening function, and piston rod is provided with spring and check lock lever, works as piston When bar moves to certain position, it will be caught in by check lock lever of the spring compression in inner wall of cylinder to self-locking grooves, check lock lever will be living Stopper rod is blocked, and realizes self-locking, when having worked, and because the hydraulic oil in cavity by oil inlet pipe flows into self-locking grooves, will be stuck in Check lock lever in self-locking grooves is squeezed out, and realizes automatic unlocking;
2nd, the utility model have the buffer unit set on the hydraulic cylinder of automatic fastening function, piston can slow down piston with Collided between cylinder bottom, the element in protection hydraulic cylinder is against damages, extends the service life of hydraulic cylinder.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model structural representation.
Mark and corresponding parts title in accompanying drawing:
1- cylinder bottoms, 2- oil inlets, the sealing rings of 3- first, 4- pistons, 5- check lock levers, 6- cylinder barrels, 7- oil inlet pipes, 8- self-lockings Groove, 9- oil return openings, 10- cylinder caps, 11- piston rods, the sealing rings of 12- second, 13- dust rings, 14- buffer units, 15- support columns, 16- rodless cavities, 17- springs, 18- cavitys.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this Utility model, is not intended as limiting of the present utility model.
Embodiment
As shown in figure 1, the utility model has the hydraulic cylinder of automatic fastening function, including cylinder bottom 1, piston 4, cylinder barrel 6, cylinder Lid 10 and piston rod 11, the cylinder barrel 6 are welded with cylinder bottom 1, and piston 4 is sealed in the inside of cylinder barrel 6 by cylinder cap 10, and piston 4 can The first sealing ring 3 is provided with to be moved inside cylinder barrel 6, and between piston 4 and cylinder barrel 6, the first sealing ring 3 is rectangular seal, The contact of rectangular seal is uniform, sealing area is big, good sealing effect, is additionally provided with the piston 4 in blind hole, blind hole Provided with buffer unit 14, buffer unit 14 is made up of buffer spring and buffer board, and buffer spring one end is connected with piston 4, another End is connected with buffer board, and rodless cavity 16 is provided between piston 4 and cylinder bottom 1, and cavity 18, no bar are provided between piston 4 and cylinder cap 10 Support column 15 is provided with chamber 16, and support column 15 is connected with cylinder bottom 1, the axis and the axle of the blind hole on piston 4 of support column 15 Line is on same straight line, and support column 15 can extend into blind hole, and the piston rod 11 is located in rodless cavity 16, and and piston 4 connections, piston rod 11 is also connected with cylinder cap 10, and the sealing of dust ring 13 and second is additionally provided between piston rod 11 and cylinder cap 10 Circle 12, dust ring 13 can prevent that the impurity of outside from, by the gap between cylinder cap 10 and piston rod 11, entering in cavity 18, Influence the work of hydraulic system, second sealing ring 12 is O-ring seals, prevent hydraulic oil in cavity 18 from cylinder cap 10 with Spring 17 is additionally provided with clearance leakage between piston rod 11, piston rod 11, spring 17 is provided with check lock lever 5, and check lock lever 5 is circle Check lock lever 5 is squeezed on the inwall of cylinder barrel 6 by post shapes, the elastic force that spring 17 is produced, and during 11 stretching motion of piston rod, will be driven Check lock lever 5 is moved on the inwall of cylinder barrel 6 together, and oil inlet 2, oil return opening 9, oil inlet pipe 7 and self-locking grooves are additionally provided with cylinder barrel 8, oil inlet 2 is located at the both sides of piston 4 with oil return opening 9, and self-locking grooves 8 are located on the inwall of cylinder barrel 6, and self-locking grooves 8 and locking Bar 5 coordinates, and the one end of oil inlet pipe 7 is connected with cavity 18, and the other end is connected with the groove floor of self-locking grooves 8.
Operation principle of the present utility model is:Hydraulic oil is entered in rodless cavity 16 by oil inlet 2, in rodless cavity 16 The pressure that hydraulic oil is produced forces piston 4 to be moved towards the direction of cylinder cap 10, and the spring 17 on piston rod 11 extrudes check lock lever 5 On the inside of cylinder barrel 6, and as piston rod 11 is moved together, when check lock lever 5 moves to self-locking grooves 8, check lock lever 5 due to By the active force of spring 17, check lock lever 5 will be caught in self-locking grooves 8, realize self-locking, stop being passed through hydraulic oil to oil inlet 2, Check lock lever 5 remains stationary as piston rod 11, when needing unblock, and the hydraulic oil in cavity 18 flows into self-locking by oil inlet pipe 7 In groove 8, high pressure liquid force feed will produce pressure to the check lock lever 5 being stuck in self-locking grooves 8, when pressure is more than spring 17 to check lock lever 5 Active force when, check lock lever 5 will be retracted out of self-locking grooves 8, realize unblock, and piston 4 will be moved towards the direction of cylinder bottom 1, work as work When plug 4 is close to cylinder bottom 1, the support column 15 on cylinder bottom 1 is stretched in the blind hole of piston 4, and the buffer unit 14 in blind hole will A cushion effect can be produced to support column 15, slow down the movement velocity of piston 4, it is to avoid quickly touching between piston 4 and cylinder bottom 1 Hit.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced Change, improve, should be included within protection domain of the present utility model.

Claims (5)

1. the hydraulic cylinder with automatic fastening function, including cylinder bottom (1), piston (4), cylinder barrel (6), cylinder cap (10) and piston rod (11), it is characterised in that:The cylinder barrel (6) is welded with cylinder bottom (1), and piston (4) is sealed in cylinder barrel (6) by cylinder cap (10), living Fill in (4) to be provided with provided with buffer unit (14) in blind hole, blind hole, rodless cavity (16) is provided between piston (4) and cylinder bottom (1), it is living Fill in be provided with cavity (18), the rodless cavity (16) between (4) and cylinder cap (10) and be provided with support column (15), and support column (15) Be connected with cylinder bottom (1), piston rod (11) is located in cylinder barrel (6), and is connected with piston (4), piston rod (11) also with cylinder cap (10) Spring (17) is additionally provided with connection, piston rod (11), spring (17) is provided with check lock lever (5), and spring (17) squeezes check lock lever (5) It is pressed on cylinder barrel (6) inwall, cylinder barrel (6) inwall is provided with self-locking grooves (8) and oil inlet pipe (7), oil inlet pipe (7) one end and self-locking grooves (8) groove floor connection, the other end is connected with cavity (18).
2. the hydraulic cylinder according to claim 1 with automatic fastening function, it is characterised in that:On the cylinder barrel (6) also Provided with oil inlet (2) and oil-out (9), oil inlet (2) and oil-out (9) are located at piston (4) both sides.
3. the hydraulic cylinder according to claim 1 with automatic fastening function, it is characterised in that:The buffer unit (14) It is made up of buffer spring and buffer board, buffer spring one end is connected with piston (4), and the other end is connected with buffer board.
4. the hydraulic cylinder according to claim 1 with automatic fastening function, it is characterised in that:The support column (15) with The axis of buffer unit (14) is on same straight line.
5. the hydraulic cylinder according to claim 1 with automatic fastening function, it is characterised in that:The piston rod (11) with Dust ring (13) and the second sealing ring (12) are additionally provided between cylinder cap (10), dust ring (13) and the second sealing ring (12) are enclosed within On piston rod (11).
CN201621333136.5U 2016-12-06 2016-12-06 Hydraulic cylinder with automatic fastening function CN206320116U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621333136.5U CN206320116U (en) 2016-12-06 2016-12-06 Hydraulic cylinder with automatic fastening function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621333136.5U CN206320116U (en) 2016-12-06 2016-12-06 Hydraulic cylinder with automatic fastening function

Publications (1)

Publication Number Publication Date
CN206320116U true CN206320116U (en) 2017-07-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621333136.5U CN206320116U (en) 2016-12-06 2016-12-06 Hydraulic cylinder with automatic fastening function

Country Status (1)

Country Link
CN (1) CN206320116U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481616A (en) * 2016-12-06 2017-03-08 泸州长江液压密封件有限公司 The hydraulic cylinder of self-locking is carried out using spring
CN108488139A (en) * 2018-03-15 2018-09-04 重庆维庆液压机械有限公司 A kind of hydraulic cylinder
CN110754761A (en) * 2019-12-12 2020-02-07 安徽冠东科技有限公司 Hydraulic side-leakage-proof lunch box

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481616A (en) * 2016-12-06 2017-03-08 泸州长江液压密封件有限公司 The hydraulic cylinder of self-locking is carried out using spring
CN106481616B (en) * 2016-12-06 2018-02-06 泸州长江液压密封件有限公司 The hydraulic cylinder of self-locking is realized using spring
CN108488139A (en) * 2018-03-15 2018-09-04 重庆维庆液压机械有限公司 A kind of hydraulic cylinder
CN108488139B (en) * 2018-03-15 2019-11-05 重庆维庆液压机械有限公司 A kind of hydraulic cylinder
CN110754761A (en) * 2019-12-12 2020-02-07 安徽冠东科技有限公司 Hydraulic side-leakage-proof lunch box

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170711

Termination date: 20191206

CF01 Termination of patent right due to non-payment of annual fee