CN203978998U - Built-in folded formula vitta structure hydraulic jack - Google Patents
Built-in folded formula vitta structure hydraulic jack Download PDFInfo
- Publication number
- CN203978998U CN203978998U CN201420456853.1U CN201420456853U CN203978998U CN 203978998 U CN203978998 U CN 203978998U CN 201420456853 U CN201420456853 U CN 201420456853U CN 203978998 U CN203978998 U CN 203978998U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- oil
- cylinder
- piston
- cylinder barrel
- 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 - Lifetime
Links
- 241001463139 Vitta Species 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 21
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 9
- 238000003466 welding Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 92
- 239000010720 hydraulic oil Substances 0.000 description 23
- 230000033001 locomotion Effects 0.000 description 21
- 239000000945 filler Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a kind of built-in folded formula vitta structure hydraulic jack, comprise bar head, piston rod, end cap, cylinder head, cylinder barrel, piston, plug, center seamless pipe, oil pipe, piston, cylinder bottom.Cylinder head coaxial welding is at cylinder barrel left end, and end cap is coaxially arranged in cylinder head, and bar head is welded on piston rod left end, on bar head, has oil inlet and outlet.Plug is welded on piston rod right-hand member, and piston rod is hollow, and piston is fixed on plug, and first layer oil pipe is welded on piston rod inside, and the unsettled first layer oil pipe inside that is fixed on of center seamless pipe utilizes two semicircular ring to be fixed on cylinder bottom simultaneously.Cylinder bottom is welded on cylinder barrel right-hand member, has two oil-through holes on cylinder bottom, is drilled with a hole E on cylinder barrel.Built-in folded formula vitta structure hydraulic jack of the present utility model, has and can solve existing oil cylinder complex contour, the problem that easily occurs installation deviation under the requirement of the narrow and small compactness of installing space, the whole machine installation advantage such as freer of getting up.
Description
Technical field
The utility model relates to a kind of hydraulic jack, and especially a kind of folded formula oil pipe is built in the built-in folded formula vitta structure hydraulic jack of oil cylinder inside.
Background technique
Market truck-mounted crane series telescopic boom cylinder now, for the system of complete machine, requirement must have two hydraulic jacks that are associated to do routing motion, the large arm that could realize like this truck-mounted crane can do free-extension motion, so for two hydraulic jacks that are associated, must to unify by oil inlet and outlet, when an oil cylinder hydraulic oil enters rod chamber by filler opening, require another root oil cylinder also will enter accordingly its rod chamber by a sequence valve connecting fluid force feed, by sequence valve, realize the coupled movements of two oil cylinders.So for the mentioned associated oil cylinder of the utility model, two oil cylinders that can meet on the one hand machine system must do the requirement of coupled movements, and on the other hand, the utility model relates to all built-in optimizing structure designs of oil pipe, form structure is simple, and whole machine installation is freer.
Model utility content
The utility model is the deficiency existing in above-mentioned prior art for avoiding, and a kind of built-in folded formula vitta structure hydraulic jack is provided, solving existing oil cylinder complex contour, easily occur the problem of installation deviation under the requirement of the narrow and small compactness of installing space.
The utility model be technical solution problem by the following technical solutions.
Built-in folded formula vitta structure hydraulic jack, its structural feature is to comprise bar head, piston rod, end cap, center seamless pipe, cylinder head, oil pipe, cylinder barrel, plug, piston, cylinder bottom, valve piece the first joint and the second joint;
Described piston rod is inserted in described cylinder barrel, and the left part of described piston rod stretches out in outside described end cap through described end cap; Described cylinder head is fixed on the left part of described cylinder barrel, and described end cap is inserted in described cylinder head from the left part of described cylinder head, by described cylinder head and described end cap, the left end of described cylinder barrel is sealed; Described plug is welded on piston rod right-hand member, and described piston fixed cover is located on the outer circumferential face of described plug; Described cylinder bottom is fixed on the right-hand member of described cylinder barrel and the right-hand member of described cylinder barrel is sealed;
Piston rod is hollow stem, and oil pipe is welded on hollow piston rod inside, is provided with four along the circumferential uniform of described piston rod and along the oil-through hole C of piston rod described in the radial penetration of described piston rod on piston rod;
The left end of described center seamless pipe is through within being inserted in described oil pipe after described piston; The right part of described center seamless pipe is locked in cylinder bottom bottom by two semicircular ring, by unsettled the left end of the center seamless pipe inside that is fixed on oil pipe;
Described valve piece is fixed on the right part of described cylinder bottom, described the first joint and the second joint, is welded on described valve piece.
The structural feature of built-in folded formula vitta structure hydraulic jack of the present utility model is also:
The part that matches with described center seamless pipe on the inner peripheral surface of described piston is provided with multiple Sealings.
On described cylinder barrel, be drilled with a hole E, cylinder bottom inside is provided with the first mistake oil groove and second and crosses oil groove.
The first hydraulic fluid port A and the second hydraulic fluid port B are all arranged on the bar head of piston rod left part; The intracavity inter-connection of described the first hydraulic fluid port A and oil pipe; Described the second hydraulic fluid port B is connected with the chamber between described piston rod and described oil pipe.
Compared with the prior art, the utility model beneficial effect is embodied in:
Built-in folded formula vitta structure hydraulic jack of the present utility model, is made up of bar head, piston rod, end cap, cylinder head, cylinder barrel, piston, plug, center seamless pipe, oil pipe, piston, cylinder bottom.Cylinder head coaxial welding is at cylinder barrel left end, end cap is coaxially arranged in cylinder head, and bar head is welded on piston rod left end, on bar head, has oil inlet and outlet, ensure that hydraulic oil can enter rod chamber and the rodless cavity of cylinder barrel inside, realize the motion that piston rod can be and to the right in cylinder barrel inside left.Plug is welded on its right-hand member, piston rod is hollow, piston is fixed on plug, first layer oil pipe is welded on piston rod inside, be synchronized with the movement with piston rod, the unsettled first layer oil pipe inside that is fixed on of center seamless pipe utilizes two semicircular ring to be fixed on cylinder bottom simultaneously, and it does relative motion with between piston rod in the process of operation to ensure oil cylinder.Cylinder bottom is welded on cylinder barrel right-hand member, on cylinder bottom, have two oil-through holes, on cylinder barrel, be drilled with a hole, when logical oil, a part enters rod chamber in cylinder barrel, rodless cavity by oil-through hole, another part is sent into another root hydraulic jack rod chamber associated therewith, rodless cavity by oilhole by sequence valve, and realizing can associated synchronisation motion between it.
The utility model is owing to adopting the folded built-in new structure of formula oil pipe, realize the synchronization association motion between two oil cylinders, this novel oil cylinder is without external oil pipe simultaneously, whole machine installation is got up freer, can avoid occurring the not reciprocity generation that causes installing phenomenon of external size in installation process.
Built-in folded formula vitta structure hydraulic jack of the present utility model, has and can solve existing oil cylinder complex contour, the problem that easily occurs installation deviation under the requirement of the narrow and small compactness of installing space, the whole machine installation advantage such as freer of getting up.
Brief description of the drawings
Fig. 1 is the sectional view of built-in folded formula vitta structure hydraulic jack of the present utility model.
Fig. 2 is the partial schematic diagram of the plan view (in Fig. 1 K to) of Fig. 1 structural representation.
Label in accompanying drawing 1～accompanying drawing 2: 1 bar head, 2 piston rods, 3 end caps, 4 center seamless pipes, 5 cylinder heads, 6 oil pipes, 7 cylinder barrels, 8 plugs, 9 pistons, 10 Sealings, 11 cylinder bottoms, 12 snap rings, 13 valve pieces, 14 first joints, 15 second joints, A the first filler opening, B the second oil outlet, C piston rod oil-through hole, the associated hydraulic fluid port of crossing of D rodless cavity, the associated hydraulic fluid port of crossing of E rod chamber, 1-1 rod chamber, 2-1 rodless cavity, 3-1 first crosses oil groove, and 4-1 second crosses oil groove.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to figure accompanying drawing 1～accompanying drawing 2, built-in folded formula vitta structure hydraulic jack of the present utility model comprises bar head 1, piston rod 2, end cap 3, center seamless pipe 4, cylinder head 5, oil pipe 6, cylinder barrel 7, plug 8, piston 9, cylinder bottom 11, valve piece 13 first joints 14 and the second joint 15;
Described piston rod 2 is inserted in described cylinder barrel 7, and the left part of described piston rod 2 stretches out in outside described end cap 3 through described end cap 3; Described cylinder head 5 is fixed on the left part of described cylinder barrel 7, and described end cap 3 is inserted in described cylinder head 5 from the left part of described cylinder head 5, by described cylinder head 5 and described end cap 3, the left end of described cylinder barrel 7 is sealed; Described plug 8 is welded on piston rod 2 right-hand members, and described piston 9 fixed covers are located on the outer circumferential face of described plug 8; Described cylinder bottom 11 is fixed on the right-hand member of described cylinder barrel 7 and the right-hand member of described cylinder barrel 7 is sealed;
Piston rod 2 is hollow stem, and oil pipe 6 is welded on hollow piston rod 2 inside, is provided with four along the circumferential uniform of described piston rod 2 and along the oil-through hole C of piston rod 2 described in the radial penetration of described piston rod 2 on piston rod 2;
The left end of described center seamless pipe 4 is through within being inserted in described oil pipe 6 after described piston 9; The right part of described center seamless pipe 4 is locked in cylinder bottom 11 bottoms by two semicircular ring 12, by unsettled the left end of center seamless pipe 4 inside that is fixed on oil pipe 6;
Described valve piece 13 is fixed on the right part of described cylinder bottom 11, described the first joint 14 and the second joint 15, is welded on described valve piece 13.
The part that matches with described center seamless pipe 4 on the inner peripheral surface of described piston 9 is provided with multiple Sealings 10.Multiple Sealings 10 form a Sealing group, and Sealing, in 4 surface frictions of center seamless pipe, requires center light tube-surface roughness to reach Ra0.4-Ra0.8.
On described cylinder barrel 7, be drilled with a hole E, cylinder bottom 11 inside are provided with the first mistake oil groove 3-1 and second and cross oil groove 4-1.
The first hydraulic fluid port A and the second hydraulic fluid port B are all arranged on piston rod 2 left part bar heads; The intracavity inter-connection of described the first hydraulic fluid port A and oil pipe 6; Described the second hydraulic fluid port B is connected with the chamber between described piston rod 2 and described oil pipe 6.
In accompanying drawing 1 of the present utility model, the direction that setting piston rod 2 stretches out is front (being the left direction in Fig. 1), otherwise is rear (being the right direction in Fig. 1).Accompanying drawing 2 is for K in Fig. 1 is to the partial view of (overlooking).
The inner circle liquid sealing of piston rod 2 cylindricals and end cap 3, piston 9 cylindricals and cylinder barrel 7 inner circle liquid sealings; Center seamless pipe 4 and piston 9 inner circle liquid sealings, the inner chamber of cylinder barrel 7 is separated into rod chamber 1-1 and rodless cavity 2-1 by described piston 9, and the filler opening A stretching out for piston rod 2 communicates with described rodless cavity 2-1, return opening B communicates with described rod chamber 1-1; Piston rod 2 is hollow stem, oil pipe 6 is welded on hollow piston rod 2 inside, on piston rod 2, be provided with four uniform oil-through hole C, in order to when the hydraulic fluid port B oil-feed, the gap of hydraulic oil between piston rod 2 internal surfaces and oil pipe 6 passed through, part hydraulic oil enters into rod chamber 2-1 through oil-through hole C and realizes piston rod and rearward move, the interior a part of hydraulic oil of rod chamber can be connected to through cylinder barrel 7 upper oil hole E the rod chamber of another root hydraulic jack by sequence valve simultaneously, also synchronously rearward motion of another root hydraulic cylinder piston rod, realizes two hydraulic jacks and is synchronized with the movement.
Center seamless pipe 4 is locked in cylinder bottom 11 bottoms by two semicircular ring 12, by its unsettled inside that is fixed on oil pipe 6, cylinder bottom 11 inside are provided with two and cross oil groove, wherein the first mistake oil groove 3-1 communicates with oil cylinder rodless cavity 2-1, second crosses oil groove 4-1 communicates with hydraulic fluid port D, hydraulic fluid port D is connected to the hydraulic jack rodless cavity being associated by sequence valve, the first joint 14, the second joint 15 is welded on the fixing valve piece 13 in cylinder bottom 11 bottoms, it is connected and is communicated by sequence valve, in the time of filler opening A oil-feed, first hydraulic oil enter oil pipe 6 inside, at the center seamless pipe 4 of flowing through, enter into valve piece 13 inside, then start shunting, first joint 14 of part hydraulic oil through being connected, the second joint 15 flow into the first mistake oil groove 3-1 that cylinder bottom 11 arranges, finally enter into oil cylinder rodless cavity 2-1, realizing piston rod 2 forwards moves, the second mistake oil groove 4-1 that another part hydraulic oil arranges through cylinder bottom 11, by hydraulic fluid port, D flows out, and finally arranges and flows into the hydraulic jack rodless cavity being associated, and realizes two cylinder piston rod associations, synchronously forwards motion.
Piston rod 2 is hollow stem, and oil pipe 6 welds therein, and on piston rod 2, is provided with uniform aperture C, ensures that gap between piston rod 2 inwalls and oil pipe 6 is except uniform aperture C, the equal positive confinement in all the other positions.
Between hollow piston rod 2 and end cap 3, piston 9 and cylinder barrel 7, be inner circle liquid sealing, require piston rod surface roughness between Ra0.1-Ra0.2, cylinder barrel internal surface requires roughness between Ra0.3-Ra0.4.
Center seamless pipe 4 is fixed on cylinder bottom 11 locked by two semicircular ring 12, realize between itself and piston rod 2 and doing relative motion.
Oil cylinder do stretch out, when retract action, relative fortune merit is done with center seamless pipe 4 in piston 9 inner sides, for realizing sealing effect, be provided with in piston inner side the Sealing group who is formed by Sealing 10, seamless pipe 4 surface frictions of Sealing 10 center, require center light tube-surface roughness to reach Ra0.4-Ra0.8.
On cylinder barrel 7, be drilled with a hole E, cylinder bottom 11 inside are provided with the first mistake oil groove 3-1 and second and cross oil groove 4-1, hydraulic oil is crossed oil groove 4-1 and is communicated with rodless cavity with the rod chamber of another associated oil cylinder through via hole E, the first mistake oil groove 3-1 and second, realizes the coupled movements of two oil cylinders.Wherein on rod chamber 1-1 region inner cylinder tube 7, be provided with a hole E, E place, hole can be connected to a sequence valve, be connected to the rod chamber of another hydraulic jack that is associated, allow the interior a part of hydraulic oil of the utility model cylinder rod chamber 1-1 flow into through hole E the hydraulic jack rod chamber being associated and realize interlock.
The first hydraulic fluid port A and the second hydraulic fluid port B are all arranged on piston rod 2 end bar heads.
Oil pipe is placed in oil cylinder inner side, and oil cylinder outer surface is without the constraint of the weldments such as oil pipe, and installation can be relatively freely, flexibly.
Built-in folded formula vitta structure hydraulic jack of the present utility model, its working procedure is as described below.
Rod chamber 1-1, rodless cavity 2-1 oil inlet passage are all arranged on oil cylinder inside, in the time of filler opening A oil-feed, hydraulic oil enters into oil pipe 6 inside, oil pipe 6 inside are all in sealing state, and the inner unsettled center seamless pipe 6 of fixing, hydraulic oil enters into center seamless pipe 6 inside, hydraulic oil is in the time flowing through valve piece 13, form shunting, part hydraulic oil is by the first joint 14, the second joint 15 that communicate, first of the cylinder bottom 11 of flowing through is crossed oil groove 3-1, finally enters into oil cylinder rodless cavity 2-1, realizes piston rod and forwards moves; Another part hydraulic oil flows directly into second of cylinder bottom 11 and crosses oil groove 4-1, flow out through oil-through hole D, oilhole D place is provided with a sequence valve, the hydraulic oil of outflow is delivered to the hydraulic jack rodless cavity being associated, realize all forwards motions of piston rod of two oil cylinders, in linkage status.In the time of oil outlet B oil-feed, hydraulic oil enters into the sealing area except uniform aperture C forming between piston rod 2 and oil pipe 6, hydraulic oil only have through all not aperture C enter into rod chamber 1-1, realizing piston rod 2 rearward moves, simultaneously in rod chamber 1-1 inside, one oilhole E is set on cylinder barrel 7, rod chamber 1-1 internal hydraulic pressure oil is in realizing piston rod 2 and rearward moving, some hydraulic oil can flow out through oil-through hole E, at oilhole E place, one sequence valve can be set and be connected to the rod chamber of the hydraulic jack that is associated, when hydraulic oil can enter into the rod chamber of associated oil cylinder during by oilhole E, realize the piston rod rearward motion simultaneously of two hydraulic jacks, form coupled movements.
Built-in folded formula vitta structure hydraulic jack of the present utility model, hollow piston rod internal welding is connected to oil pipe; Described center seamless pipe is locked in cylinder bottom bottom by it by two semicircular ring, and unsettled fixing and oil pipe inside, has formed three stacked oil pipes; Described center seamless pipe and piston internal surface, by Sealing group inner circle liquid sealing, require seamless pipe surface to have roughness requirement, and seamless pipe selects 20 essences to pull out seamless pipe herein; Between described piston rod and seamless pipe, in the time that oil cylinder moves, be relative movement; Described cylinder bottom has two and crosses oil groove, and by hydraulic oil shunting, a part flows into rodless cavity, and another part flows into the rodless cavity of hydraulic jack associated therewith by sequence valve; On described cylinder barrel, be provided with an oil-through hole, cylinder barrel and piston rod outer surface have formed rod chamber, when oil cylinder operation, hydraulic oil flows into rod chamber by the uniform aperture on piston, a part realizes piston rod and moves backward, and another part flows into hydraulic jack rod chamber associated therewith by the oil-through hole arranging on cylinder barrel; Described oil inlet and outlet is all arranged on bar head.The built-in folded formula vitta structure hydraulic jack of the utility model, not only realize the coupled movements between two hydraulic jacks, and form structure is simple, and oil pipe is all built-in, compact structure is easily manufactured, in the time of final assembly, in narrow and small installing space, can freely install, safe and reliable, long service life.
Hydraulic jack of the present utility model, cross oil pipe and be all arranged on hydraulic jack inside, form the special construction of three layers of hydraulic oil pipe of built-in folded formula, can ensure the stable operation of the utility model hydraulic jack, can realize again hydraulic jack stable operation associated therewith, form structure is simple, compact, can install very easily at narrow and small installing space.
In order to make the oil cylinder can smooth running, require region that cylinder rod chamber, rodless cavity, oil pipe and piston rod internal surface form except oil-through hole, each welding part and Sealing region must ensure positive confinement.
Sealing damages and causes draining when doing relative fortune merit between piston rod and center seamless pipe, and described center light tube-surface roughness must reach Ra0.4-Ra0.8.
Center seamless pipe is locked at cylinder bottom position by it by two half-round clamping rings, ensures that piston rod does relative motion with it.
In order to ensure that the utility model oil cylinder and another root hydraulic jack associated with it realizes coupled movements, be respectively provided with two oil-through holes for rod chamber, rodless cavity and answer in contrast the rod chamber of hydraulic jack to communicate with rodless cavity.
The utility model hydraulic jack be all arranged on piston rod club head position into and out of hydraulic fluid port A and B, and logical fluid pressuring oil pipe is all arranged on hydraulic jack inside.
Built-in folded formula vitta structure hydraulic jack of the present utility model, oil pipe is all arranged on hydraulic jack inside, and be all arranged on piston rod club head position into and out of hydraulic fluid port, the hydraulic jack of the associated that can link simultaneously, in hydraulic jack of the same type, the utility model is simple in structure, compact, convenient processing, and whole machine installation is freely, conveniently.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. built-in folded formula vitta structure hydraulic jack, it is characterized in that, comprise bar head (1), piston rod (2), end cap (3), center seamless pipe (4), cylinder head (5), oil pipe (6), cylinder barrel (7), plug (8), piston (9), cylinder bottom (11), valve piece (13) first joints (14) and the second joint (15);
Described piston rod (2) is inserted in described cylinder barrel (7), and the left part of described piston rod (2) stretches out in outside described end cap (3) through described end cap (3); Described cylinder head (5) is fixed on the left part of described cylinder barrel (7), described end cap (3) is inserted in described cylinder head (5) from the left part of described cylinder head (5), by described cylinder head (5) and described end cap (3), the left end of described cylinder barrel (7) is sealed; Described plug (8) is welded on piston rod (2) right-hand member, and described piston (9) fixed cover is located on the outer circumferential face of described plug (8); Described cylinder bottom (11) is fixed on the right-hand member of described cylinder barrel (7) and the right-hand member of described cylinder barrel (7) is sealed;
Piston rod (2) is hollow stem, oil pipe (6) is welded on hollow piston rod (2) inside, is provided with four along the circumferential uniform of described piston rod (2) and along the oil-through hole C of piston rod (2) described in the radial penetration of described piston rod (2) on piston rod (2);
The left end of described center seamless pipe (4) is through within being inserted in described oil pipe (6) after described piston (9); The right part of described center seamless pipe (4) is locked in cylinder bottom (11) bottom by two semicircular ring (12), by unsettled the left end of center seamless pipe (4) inside that is fixed on oil pipe (6);
Described valve piece (13) is fixed on the right part of described cylinder bottom (11), described the first joint (14) and the second joint (15), is welded on described valve piece (13).
2. built-in folded formula vitta structure hydraulic jack according to claim 1, is characterized in that, the part that matches with described center seamless pipe (4) on the inner peripheral surface of described piston (9) is provided with multiple Sealings (10).
3. built-in folded formula vitta structure hydraulic jack according to claim 1, it is characterized in that, on described cylinder barrel (7), be drilled with a hole E, cylinder bottom (11) inside is provided with the first mistake oil groove (3-1) and second and crosses oil groove (4-1).
4. built-in folded formula vitta structure hydraulic jack according to claim 1, is characterized in that, the first hydraulic fluid port A and the second hydraulic fluid port B are all arranged on the bar head of piston rod (2) left part; The intracavity inter-connection of described the first hydraulic fluid port A and oil pipe (6); Described the second hydraulic fluid port B is connected with the chamber between described piston rod (2) and described oil pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456853.1U CN203978998U (en) | 2014-08-13 | 2014-08-13 | Built-in folded formula vitta structure hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456853.1U CN203978998U (en) | 2014-08-13 | 2014-08-13 | Built-in folded formula vitta structure hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978998U true CN203978998U (en) | 2014-12-03 |
Family
ID=51976450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420456853.1U Expired - Lifetime CN203978998U (en) | 2014-08-13 | 2014-08-13 | Built-in folded formula vitta structure hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196814A (en) * | 2014-08-13 | 2014-12-10 | 合肥长源液压股份有限公司 | Hydraulic oil cylinder of built-in stacked type oil pipe structure |
| CN108561368A (en) * | 2018-06-01 | 2018-09-21 | 江苏恒立液压股份有限公司 | Lift arm oil cylinder |
| CN112503053A (en) * | 2020-10-23 | 2021-03-16 | 浙江拓邦液压科技有限公司 | Hydraulic cylinder with dustproof function |
-
2014
- 2014-08-13 CN CN201420456853.1U patent/CN203978998U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196814A (en) * | 2014-08-13 | 2014-12-10 | 合肥长源液压股份有限公司 | Hydraulic oil cylinder of built-in stacked type oil pipe structure |
| CN108561368A (en) * | 2018-06-01 | 2018-09-21 | 江苏恒立液压股份有限公司 | Lift arm oil cylinder |
| CN112503053A (en) * | 2020-10-23 | 2021-03-16 | 浙江拓邦液压科技有限公司 | Hydraulic cylinder with dustproof function |
| CN112503053B (en) * | 2020-10-23 | 2023-02-24 | 浙江拓邦液压科技有限公司 | Hydraulic cylinder with dustproof function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102852896B (en) | A kind of Double-action multistage hydraulic oil cylinder with solid piston rod | |
| CN106678122B (en) | A kind of primary and secondary differential hydro cylinder | |
| CN103174699A (en) | Servo hydraulic cylinder | |
| CN203978998U (en) | Built-in folded formula vitta structure hydraulic jack | |
| CN109973463A (en) | A kind of oil cylinder, Multi-cylinder sequential telescopic mechanism and engineering machinery that energy reliable sequence is flexible | |
| CN103671344B (en) | Pumping oil cylinder and pumping equipment comprising same | |
| CN103508337B (en) | Control method of plug pin mechanism control system and crane | |
| CN203463409U (en) | Oil cylinder with piston provided with small radial hole | |
| CN107630856A (en) | A kind of sequential telescopic oil cylinder and crane | |
| CN105465097B (en) | Engineering machinery and its multi-stage expansion mechanism | |
| CN207715463U (en) | A kind of sequential telescopic oil cylinder and crane | |
| CN104196814A (en) | Hydraulic oil cylinder of built-in stacked type oil pipe structure | |
| CN104632756A (en) | Two-way telescopic quick-changing oil cylinder | |
| CN107387491B (en) | Double-action hydraulic mechanism, multi-stage expansion hydraulic mechanism and hydraulic support | |
| CN104196814B (en) | Built-in stacked vitta structure hydraulic jack | |
| CN204941859U (en) | Be applied to the Pneumatic rotary injection type washing machine of large-scale staving cleaning | |
| CN209725397U (en) | A kind of pneumatic hydraulic cylinder and the Pneumatic hydraulic valve with the cylinder body | |
| CN206988099U (en) | A kind of connection rod structure of piston element easy to assemble | |
| CN106286462A (en) | A kind of bi-directional expansion oil cylinder | |
| CN106870503A (en) | The double rod Multifunctional hydraulic devices of many cavity volumes | |
| CN111853515A (en) | Automatic reciprocating pushing mechanism of pneumatic high-pressure oiling machine | |
| CN106151166A (en) | The asynchronous telescopic hydraulic cylinder of dibit | |
| CN204941862U (en) | Oil tanker oil-storing barrel cleaning system | |
| CN104359624A (en) | Plug valve pressure tester | |
| CN204476931U (en) | The asynchronous telescopic hydraulic cylinder of dibit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |