CN206054442U - A kind of tight locking hydraulic cylinder of mechanical self-latching - Google Patents
A kind of tight locking hydraulic cylinder of mechanical self-latching Download PDFInfo
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- CN206054442U CN206054442U CN201621043287.7U CN201621043287U CN206054442U CN 206054442 U CN206054442 U CN 206054442U CN 201621043287 U CN201621043287 U CN 201621043287U CN 206054442 U CN206054442 U CN 206054442U
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- oil duct
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- oil
- cylinder bottom
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Abstract
A kind of tight locking hydraulic cylinder of mechanical self-latching, is equipped with valve block, cylinder bottom on cylinder barrel, cylinder barrel is built with piston rod, inner cavity of cylinder is divided into rod chamber, rodless cavity by the piston loaded on piston rod end, pistons end is provided with steel ball, and inner wall of cylinder is provided with locating slot, and cylinder bottom is provided with control piston, oil duct seven；Valve block is provided with oil duct four, oil duct five, and four import of oil duct is connected with five import of oil duct, and the outlet of oil duct five is connected to form oil circuit one with rod chamber, and the outlet of oil duct four is connected to form oil circuit two with cylinder bottom oil duct seven；Oil duct eight is additionally provided with valve block, oil duct eight is connected to form oil circuit three with rodless cavity.Compared with prior art, this utility model has simple structure, and product easy processing is not take up space and weight, delivery-check qualified rate height of product, unqualified recoverable feature.
Description
Technical field
This utility model is related to a kind of tight locking hydraulic cylinder of mechanical self-latching.
Background technology
At present, known hydraulic locking cylinder locking device is external bidirectional hydraulic lock, and bidirectional hydraulic lock is two hydraulic control lists
Use to valve and together, be generally used in load-bearing hydraulic cylinder or motor oil circuit, for hydraulic cylinder or motor being prevented in weight
Voluntarily glide under thing effect, when needing action, must be to another road fuel feeding, opening check valve by internal control oil circuit connects oil circuit
Lead to, hydraulic cylinder or motor could actions.Due to due to the product structure itself, during hydraulic cylinder, due to load
Deadweight, often causes instantaneous loss of pressure in main working chamber, produces vacuum, and makes closed check valve, then proceedes to fuel feeding so that work
Cavity pressure rising is then turned on check valve.Due to continually there is either on or off action, and produce during making to be supported on whereabouts
The larger shock and vibration of life, therefore, bidirectional hydraulic lock is generally used for the not high locked loop of movement velocity, and external two-way
Hydraulic lock needs to occupy certain space, increases weight and cost to equipment.
The content of the invention
The purpose of this utility model is to overcome the shortcomings of above-mentioned external bidirectional hydraulic lock, and provides a kind of simple and effective
It is not take up space and increases the tight locking hydraulic cylinder of mechanical self-latching of weight, simple structure, product easy processing, and can be effective
Prevent from revealing the situation of the not tight for causing due to hydraulic cylinder interior leakage.
The technical solution of the utility model is：On cylinder barrel be equipped with valve block, cylinder bottom, cylinder barrel built with piston rod, loaded on piston
Inner cavity of cylinder is divided into rod chamber, rodless cavity by the piston of boom end, and pistons end is provided with steel ball, and inner wall of cylinder is provided with locating slot,
Cylinder bottom is provided with and can move forward and backward to drive control piston, the oil duct seven of the into and out locating slot of steel ball；Set on the valve block
Have oil duct four, oil duct five, four import of oil duct is connected with five import of oil duct, oil duct five outlet be connected with rod chamber to be formed for
The oil circuit one for promoting piston rod to withdraw, the outlet of oil duct four are connected to be formed for promoting control piston to reach with cylinder bottom oil duct seven
Dynamic oil circuit two；Be additionally provided with oil duct eight on the valve block, oil duct eight be connected with rodless cavity to be formed for promote control piston to
Move afterwards to drive steel ball to depart from the oil circuit three that locked groove pusher piston bar stretches out.
The pistons end forms cannelure, and cannelure outer wall is provided with the through hole communicated with cannelure, steel ball activity dress
In cannelure, through hole；The control piston includes the cylindrical portion corresponding with cannelure, is connected in the bar portion in wound packages portion, tubular
The external diameter in portion is less than cannelure external diameter, and the internal diameter of cylindrical portion is more than cannelure internal diameter.
The cylinder bottom includes earrings portion, connection bar portion, the transition part between earrings portion and connection bar portion, connects bar portion
End is provided with pilot hole, and the bar portion for controlling piston is placed in pilot hole, is arranged at the oil duct seven at transition part and is connected with pilot hole.
The cylinder bottom connection bar portion exterior has positioning sleeve, and the positioning sleeve inwall is provided with locating flange, controls piston outer wall
It is provided with the flange for coordinating positioning with locating flange.
The located pin of the positioning sleeve loaded on cylinder bottom, positioning sleeve with control piston for gap cooperation, positioning sleeve leaves control
Piston processed moves forward and backward the gap of corresponding stroke.
Spring is housed between the control piston and cylinder bottom.
In installing hole of the spring one end loaded on control piston bar portion, in location hole of the spring other end loaded on cylinder bottom.
The cylinder barrel is provided with oil duct six, oil duct nine, and the outlet Jing of oil duct four oil ducts six are connected with cylinder bottom oil duct seven, oil duct
Eight Jing oil ducts nine are connected with rodless cavity.
The valve block is provided with hydraulic fluid port B, hydraulic fluid port A, and hydraulic fluid port B is connected with four import of oil duct, five import of oil duct respectively, hydraulic fluid port A
It is connected with oil duct eight.
The oil duct six that Barrel of Hydraulic Cylinders is provided with the locating slot of steel ball and is connected with cylinder bottom and valve block oil duct four, is provided with and valve
Block oil duct eight and the oil duct nine of oil cylinder rodless cavity connection；Cylinder bottoms of hydraulic cylinders is provided with the oil duct seven being connected with cylinder barrel, sets on valve block
There is the oil duct four being connected with hydraulic system hydraulic fluid port A, cylinder barrel oil duct six and cylinder rod chamber oil duct five, valve block is provided with and hydraulic pressure system
System hydraulic fluid port B and the oil duct eight of the connection of cylinder barrel oil duct nine；During piston rod assembly recovery movement, hydraulic system is distinguished by hydraulic fluid port A fuel feeding
Oil duct five, oil duct four-way rod chamber oil duct one, six fuel feeding of cylinder barrel oil duct on the valve block, rod chamber oil supply pressure promote piston rod
Component recovery movement, cylinder barrel oil duct six give control piston thrust to seven fuel feeding of cylinder bottom oil duct, prevent from controlling piston off-duty in place；
Steel ball is housed on plunger stem flange, steel ball makes steel ball enter determining for cylinder barrel by controlling piston leading portion chamfering when piston rod withdraws
Position draw-in groove plays the locking safeguard function for preventing piston rod assembly from stretching out to position locking, and control piston inner spring effectively can be prevented
Piston component is only controlled after hydraulic system fuel cut-off and withdraws phenomenon.When piston rod assembly stretches out hydraulic system by hydraulic fluid port A to
On valve block, oil duct eight, nine fuel feeding of cylinder barrel oil duct reach oil cylinder rodless cavity, and oil supply pressure withdraws control piston, and steel ball falls piston after rise
Middle oil supply pressure does piston rod assembly to stretch out motion.
Compared with prior art, this utility model has simple structure, and product easy processing is not take up space and weight, produces
Delivery-check qualified rate height of product, unqualified recoverable feature.
Description of the drawings
Fig. 1 is one of structural representation of the present utility model.（Piston rod recovery movement is to middle part state）.
Fig. 2 is the two of structural representation of the present utility model.（The complete retracted state of piston rod）.
Fig. 3 is the three of structural representation of the present utility model.（Piston rod starts the state of stretching out）.
Fig. 4 is the four of structural representation of the present utility model.（Piston rod stretches out and moves to middle part state）.
Fig. 5 is the assembling schematic diagram of cylinder bottom, spring, positioning sleeve, alignment pin.
Fig. 6 is the assembling schematic diagram of piston rod, piston, steel ball, locking nut.
Fig. 7 is piston structure schematic diagram.
Fig. 8 is control piston structure schematic diagram.
Fig. 9 is bottom structure schematic diagram.
Figure 10 is valve block structure schematic diagram.
Figure 11 is the A direction views of Figure 10.
Figure 12 is the B direction views of Figure 10.
Figure 13 is cylinder structure schematic diagram.
Figure 14 is the cut-away view of Figure 11.
Figure 15 is the A-A cut-away views of Figure 11.
In figure, 1, cylinder bottom, 2, spring, 3, control piston, 4, alignment pin, 5, positioning sleeve, 6, locking nut, 7, steel ball, 8,
Valve block, 9, piston, 10, piston rod, 11, cylinder barrel, 12, oil pipe, 13, fairlead, 14, oil circuit one, 15, oil circuit two, 16, oil circuit
Three, 17, hydraulic fluid port A, 18, hydraulic fluid port B, 19, locating slot, 20, the conical surface, 21, oil duct four, 22, oil duct five, 23, oil duct six, 24, oil duct
Seven, 25, oil duct eight, 26, oil duct nine.
Specific embodiment
In Fig. 1-15, this utility model includes cylinder barrel 11, piston rod 10, valve block 8, cylinder bottom 1, loaded on the spring on cylinder bottom 1
2nd, piston 3, positioning sleeve 5, alignment pin 4 are controlled, loaded on the piston 9 on piston rod 10, steel ball 7 and locking nut 6.Piston 9 is installed
Locking is fixed by locking nut 6 on piston rod 10, piston 9 is provided with the hole for placing steel ball 7, between piston 9 and locking nut 6
Leave appropriate gap and ensure that control 3 leading portion of piston can be entered, this gap is straight less than steel ball 7 more than 3 wall thickness of control piston
Footpath, prevents steel ball 7 from dropping from there；Spring 2 is controlled loaded on cylinder bottom 1 in the endoporus between piston 3, and control piston 3 is by positioning sleeve 5
Position assurance its have appropriate stroke steel ball 7 risen, fallen, by adjust positioning sleeve 5 mix up control piston 3 stroke after match somebody with somebody
Bore dowel hole and load alignment pin 4, prevent 5 play of positioning sleeve.Wherein, the endoporus for controlling piston 3 with cylinder bottom 1 is fit dimension
H8/H8, between by fill O-ring sealing.Valve block 8 is provided with oil duct 4 21, oil duct 5 22,4 21 import of oil duct and oil duct 5 22
Import is connected, and the outlet of oil duct 5 22 is connected to form oil circuit 1 with rod chamber, and oil duct 8 25, cylinder barrel are additionally provided with valve block 8
11 are provided with oil duct 6 23, oil duct 9 26, and the outlet Jing of oil duct 4 21 oil ducts 6 23 are connected to form oil circuit with 1 oil duct 7 24 of cylinder bottom
2 15,8 25 Jing oil ducts 9 26 of oil duct are connected to form oil circuit 3 16 with rodless cavity.Wherein, 13 is fairlead.
When system is by hydraulic fluid port B18 fuel feeding, hydraulic oil respectively leads to oil circuit 1, oil circuit 2 15, the hydraulic pressure of oil circuit 1
Oil drives piston rod 10 and component to do recovery movement, oil circuit in cylinder rod chamber through the oil passage of valve block 8, oil pipe 12
2 15 hydraulic oil is applied to control piston 3 power through valve block 8,11 oil duct of cylinder barrel, the formation thrust of cylinder bottom 1 and spring 2 and promotes
Double protection function is played in the control motion of piston 3, and when the steel ball 7 on piston rod 10 and component is contacted with control piston 3, steel ball 7 leads to
Cross the 3 front end conical surface 20 of control piston and ascend into locating slot 19 and play locking function（As Fig. 1,2）, in system fuel cut-off by
The thrust that spring 2 is formed prevents control piston 3 from withdrawing steel ball 7 and falls oil cylinder release.
When system is by hydraulic fluid port A17 fuel feeding hydraulic oil lead to oil circuit 3 16, hydraulic oil be directly entered oil cylinder rodless cavity product
Raw pressure, first, pressure overcomes the thrust of spring that control piston 3 is pushed back makes steel ball 7 fall in 7 hole of piston, releases locking anti-
Shield；Then the thrust promotion piston rod assembly of hydraulic oil does and stretches out motion（As Fig. 3,4）.
In cylinder bottom component control piston 3 stroke can be by adjust positioning sleeve 5 adjust, control piston 3 stroke
Distance be by steel ball 7 fall into locating slot 19 requirement length determine, when stationary positioned cover calculate control piston 3 stroke away from
4 hole of alignment pin is bored from ensureing that corresponding stroke is matched somebody with somebody, alignment pin 4 is then assembled（Such as Fig. 5）.
Claims (8)
1. the tight locking hydraulic cylinder of a kind of mechanical self-latching, it is characterised in that：Cylinder barrel（11）It is upper that valve block is housed（8）, cylinder bottom（1）, cylinder barrel
（11）Built with piston rod（10）, loaded on piston rod（10）The piston of end（9）Inner cavity of cylinder is divided into into rod chamber, rodless cavity,
Piston（9）End is provided with steel ball（7）, cylinder barrel（11）Inwall is provided with locating slot（19）, cylinder bottom（1）It is provided with and can moves forward and backward with band
Dynamic steel ball（7）The control piston of into and out locating slot（3）, oil duct seven（24）；
The valve block（8）It is provided with oil duct four（21）, oil duct five（22）, oil duct four（21）Import and oil duct five（22）Import is connected
It is logical, oil duct five（22）Export the oil circuit one to be formed for promoting piston rod to withdraw that is connected with rod chamber（14）, oil duct four（21）
Outlet and cylinder bottom（1）Oil duct seven（24）It is connected to be formed for promoting control piston（3）The oil circuit two of forward movement（15）；
The valve block（8）On be additionally provided with oil duct eight（25）, oil duct eight（25）It is connected to be formed for promoting control to live with rodless cavity
Plug（3）It is moved rearwards by driving steel ball to depart from the oil circuit three that locked groove pusher piston bar stretches out（16）.
2. the tight locking hydraulic cylinder of mechanical self-latching according to claim 1, it is characterised in that：The piston（9）End is formed
Cannelure, cannelure outer wall are provided with the through hole communicated with cannelure, steel ball（7）Activity is loaded on cannelure, through hole；
The control piston（3）Including the cylindrical portion corresponding with cannelure, it is connected in the bar portion in wound packages portion, the external diameter of cylindrical portion is little
In cannelure external diameter, the internal diameter of cylindrical portion is more than cannelure internal diameter.
3. the tight locking hydraulic cylinder of mechanical self-latching according to claim 2, it is characterised in that：The cylinder bottom（1）Including earrings
Portion, connection bar portion, the transition part between earrings portion and connection bar portion, connection bar portion end is provided with pilot hole, controls piston
（3）Bar portion be placed in pilot hole, the oil duct seven being arranged at transition part（24）Connect with pilot hole.
4. the tight locking hydraulic cylinder of mechanical self-latching according to claim 3, it is characterised in that：The cylinder bottom（1）Connection bar portion
Positioning sleeve is housed outward（5）, the positioning sleeve（5）Inwall is provided with locating flange, controls piston（3）Outer wall is provided with and locating flange
Coordinate the flange of positioning.
5. the tight locking hydraulic cylinder of mechanical self-latching according to claim 4, it is characterised in that：The positioning sleeve（5）It is located
Pin（4）Loaded on cylinder bottom（1）On, positioning sleeve（5）With control piston（3）Coordinate for gap.
6. the tight locking hydraulic cylinder of mechanical self-latching according to claim 2, it is characterised in that：The control piston（3）With cylinder
Bottom（1）Between be equipped with spring（2）.
7. the tight locking hydraulic cylinder of mechanical self-latching according to claim 6, it is characterised in that：The spring（2）One end is loaded on
Control piston（3）In the installing hole of bar portion, spring（2）The other end is loaded on cylinder bottom（1）Location hole in.
8. the tight locking hydraulic cylinder of mechanical self-latching according to claim 1, it is characterised in that：The cylinder barrel（11）It is provided with oil
Road six（23）, oil duct nine（26）, oil duct four（21）Outlet Jing oil ducts six（23）With cylinder bottom（1）Oil duct seven（24）It is connected, oil duct
Eight（25）Jing oil ducts nine（26）It is connected with rodless cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043287.7U CN206054442U (en) | 2016-09-08 | 2016-09-08 | A kind of tight locking hydraulic cylinder of mechanical self-latching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043287.7U CN206054442U (en) | 2016-09-08 | 2016-09-08 | A kind of tight locking hydraulic cylinder of mechanical self-latching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054442U true CN206054442U (en) | 2017-03-29 |
Family
ID=58369680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621043287.7U Expired - Fee Related CN206054442U (en) | 2016-09-08 | 2016-09-08 | A kind of tight locking hydraulic cylinder of mechanical self-latching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054442U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299923A (en) * | 2017-08-11 | 2017-10-27 | 泸州长信液压机械制造有限公司 | The tight device of mechanical lock of hydraulic cylinder, mechanical locking hydraulic jack and its locking method |
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
-
2016
- 2016-09-08 CN CN201621043287.7U patent/CN206054442U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
| CN107806458B (en) * | 2016-09-08 | 2024-04-30 | 中国兵器工业集团江山重工研究院有限公司 | Mechanical self-locking anti-loose hydraulic cylinder |
| CN107299923A (en) * | 2017-08-11 | 2017-10-27 | 泸州长信液压机械制造有限公司 | The tight device of mechanical lock of hydraulic cylinder, mechanical locking hydraulic jack and its locking method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200710 Address after: 441004 Lianhua Road, Nissan Industrial Park, Xiangyang hi tech Zone, Hubei Province, No. 1 Patentee after: HUBEI JIANGSHAN HEAVY INDUSTRIES Co.,Ltd. Address before: 441004 No. 1 Lianhua Road, Nissan Industrial Park, hi tech Zone, Hubei, Xiangfan Patentee before: HUBEI JIANGSHAN HYDRAULIC TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20200908 |