CN202992347U - Novel multi-section pneumatic execution cylinder - Google Patents
Novel multi-section pneumatic execution cylinder Download PDFInfo
- Publication number
- CN202992347U CN202992347U CN 201220740405 CN201220740405U CN202992347U CN 202992347 U CN202992347 U CN 202992347U CN 201220740405 CN201220740405 CN 201220740405 CN 201220740405 U CN201220740405 U CN 201220740405U CN 202992347 U CN202992347 U CN 202992347U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston ring
- cylinder
- ring
- piston rod
- 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 - Fee Related
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a novel multi-section pneumatic execution cylinder which comprises a piston rod, a front end cover, a cylinder body, a front piston ring, a spacer bush, a main piston ring, a rear piston ring, a rear end cover, a communication block, a solenoid valve and air inlets A1, B1, C1 and D1. The front end cover, the front piston ring, the spacer bush and the main piston ring are arranged in a left cavity of the cylinder body, two grooves are sleeved on the piston rod, and the piston rod is integrally connected with the main piston ring through a nut mechanism. The rear piston ring and the rear end cover are arranged in a right cavity of the cylinder body. The air inlets A1, B1, C1 and D1 are arranged on the upper portions of both the left cavity and the right cavity of the cylinder body. The communication block and the solenoid valve are arranged above one side of the cylinder body and are installed on the cylinder body through bolts. By enabling gas to be communicated in the cylinder body and the communication block, utilizing gas pressure and controlling pressure balance of each cavity in the cylinder body, linear reciprocating motion of the cylinder piston rod is achieved.
Description
Technical field
The utility model relates to a kind of pneumatic execution cylinder of hydro-pneumatic field, particularly relate to a kind of suction port conducting of being responsible for the electromagnetic valve break-make, and built-in executive component, and then complete reciprocating a kind of multi-section type novel pneumatic of carrying out the piston bar and carry out cylinder.
Background technique
Progress along with technology, increasing engineering vehicle has been placed on the starting point control accuracy that how to improve vehicle gradually, how to strengthen driver's the aspects such as manipulation experience, and this often is embodied in vehicle and has larger driving space, all parts is controlled flexibly, handles the aspects such as precision height.Be exactly mechanical type in the past to be handled change into pneumatic or hydrodynamic and address this problem the simplest direct way.At present, state's inside cylinder, the power assisted gearshift cylinder that especially is applied in engineering machinery mainly contains two kinds, and the one, adopt the single hop stroke cylinder, this cylinder is easy to control, and service precision is high, but Applicable scope is relatively limited to.The second is the multi-section type cylinder.This kind cylinder is applied widely, but the gas turnover is wayward, and because suction port is too much, often sealing is relatively poor, causes functions of waterproof and dustproof poor, is difficult to working life guarantee.It is built-in that the novel pneumatic that my company develops is carried out the cylinder gas circuit, well sealing problem.Can increase according to actual needs in addition preposition dust-proof cover, on put venting gas appliance etc., realize better the problems such as dustproof and waterproof.
This shows, above-mentioned existing cylinder obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.Therefore how to found a kind of pneumatic execution cylinder of a kind of Novel multi-section of new structure, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing cylinder exists, the inventor is based on being engaged in this type of product specification manufacturing abundant practical experience and professional knowledge for many years, and the utilization of cooperation scientific principle, positive research and innovation in addition, to the pneumatic execution cylinder of a kind of Novel multi-section of founding a kind of new structure, can improve general existing cylinder, make it have more practicability.Through constantly research, design, and through after repeatedly studying sample and improvement, finally create the utility model that has practical value.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing cylinder exists, and the pneumatic execution cylinder of a kind of Novel multi-section that a kind of new structure is provided, technical problem to be solved is it to be worked as have the adhesive of electric current when input spool to move upward in solenoid valve, realize the gas conducting of cavity of resorption and the epicoele of conducting piece, by each solenoid valve and multifunctional electromagnetic valves electric and dead electricity finally realize carrying out the gear conversion of cylinder, be very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technological scheme to realize.Pass through gas at cylinder body and conducting piece internal circulation according to the pneumatic execution cylinder of a kind of Novel multi-section that the utility model proposes.The recycling gas pressure intensity, realize the straight reciprocating motion of cylinder piston rod by each cavity pressure balance in the control cylinder body, comprising: piston rod, front cover, cylinder body, secondary piston ring, spacer, main piston ring, back piston ring, rear end cover, conducting piece, solenoid valve, suction port A1, B1, C1, D1; Be provided with described front cover, described secondary piston ring, described spacer, described main piston ring in the left chamber of described cylinder body and be sheathed on described piston rod, piston rod and described main piston ring connect as one by nut body; Be provided with described back piston ring, described rear end cover in the right chamber of described cylinder body; Top, the left and right chamber of described cylinder body is provided with suction port A1, B1, C1, D1; Be provided with described conducting piece, described solenoid valve above described cylinder body one side, be installed on cylinder body by bolt.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section is characterized in that inner chamber of cylinder block is shaped as I-shaped.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section, the gas source that it is characterized in that inlet hole is E.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section is characterized in that cylinder body left chamber front end is provided with suction port A1, left cavity rear end is provided with suction port B1, and right chamber front end is provided with suction port C1, right cavity rear end is provided with suction port D1.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section is characterized in that the front cover internal diameter is provided with two grooves and is sheathed on piston rod by seal ring, support ring.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section is characterized in that secondary piston ring internal diameter is provided with two grooves and is sheathed on piston rod by seal ring; Secondary piston ring external diameter is provided with two grooves and is installed in cylinder diameter by seal ring, support ring; And this left side is provided with cushion pad, and the right side is provided with cushion pad and is close to shaft shoulder place.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section is characterized in that main piston ring external diameter is provided with two grooves and is installed in cylinder diameter by support ring, seal ring, and this left side and spacer is adjacent, the right side is adjacent with cushion pad and pass through fastening nuts.
The pneumatic execution cylinder of aforesaid a kind of Novel multi-section, it is characterized in that the back piston ring is multidiameter shaft, wherein: the path place is provided with a groove and is provided with a groove and is installed in cylinder diameter by seal ring by support ring, place, large footpath, and the right-hand member that this shaft shoulder place is provided with seal ring, back piston ring is equipped with cushion pad, passes through screw fastening.
The utility model compared with prior art has obvious advantage and beneficial effect.By above technology contents as can be known, for achieving the above object, the utility model provides the pneumatic execution cylinder of a kind of Novel multi-section to pass through gas at cylinder body and conducting piece internal circulation.The recycling gas pressure intensity, realize the straight reciprocating motion of cylinder piston rod by each cavity pressure balance in the control cylinder body, comprising: piston rod, front cover, cylinder body, secondary piston ring, spacer, main piston ring, back piston ring, rear end cover, conducting piece, solenoid valve, suction port A1, B1, C1, D1; Be provided with described front cover, described secondary piston ring, described spacer, described main piston ring in the left chamber of described cylinder body and be sheathed on described piston rod, piston rod and described main piston ring connect as one by nut body; Be provided with described back piston ring, described rear end cover in the right chamber of described cylinder body; Top, the left and right chamber of described cylinder body is provided with suction port A1, B1, C1, D1; Be provided with described conducting piece, described solenoid valve above described cylinder body one side, be installed on cylinder body by bolt.This cylinder is divided into N, R, F1, four gears of F2, the acquiescence initial position when wherein the N gear is the cylinder installation.When carrying out cylinder working, primary air inlet E all the time with its former communicating, the via by cylinder block inside guarantees that inlet hole A, B, C, D all have gas to import (as Fig. 1).Conducting piece and solenoid valve are arranged on cylinder body by bolt.The spool adhesive moves upward when the electric current input is arranged in solenoid valve, realizes the gas conducting of cavity of resorption and the epicoele of conducting piece, i.e. conducting between inlet hole A and inlet hole A1 finally realizes A chamber air inlet.By each solenoid valve and multifunctional electromagnetic valves electric and dead electricity finally realize carrying out the gear conversion of cylinder.
The R that reverses gear is that piston rod is released state entirely: the solenoid valve III has the electric current input, inlet hole C1 realizes the conducting of above-mentioned gas circuit interpreter, other suction port sealings, pressurized gas promotion back balance this moment piston moves right, the main piston endless belt moves spacer, forward horizontal stand piston ring and piston rod together to left movement, arrives limit position after contacting with front cover to the forward horizontal stand piston ring.In this moment cylinder body, each chamber reaches pressure balance, realizes that piston rod releases range and arrive the R gear;
Neutral N is the action of a gear of piston rod retraction: solenoid valve I, III have the electric current input at this moment, suction port A1, C1 realize above-mentioned gas circuit conversion and conducting air inlet, other suction port sealings, this moment, pressurized gas promoted the back balance piston to left movement, the forward horizontal stand piston ring drives spacer, forward horizontal stand piston ring and piston rod and together moves right, and arrives limit position after contacting with the cylinder body front cover to the forward horizontal stand piston ring.In this moment cylinder body, each chamber reaches pressure balance, realizes the piston rod LAP of retracting left, reaches the N gear;
Forward gear F1 is an action of two sections strokes of piston rod retraction: solenoid valve II, IV have the electric current input, suction port B1, D1 realize above-mentioned gas circuit conversion and conducting air inlet, other suction port sealings, this moment, pressurized gas promoted to reach the limit of the position after the back balance piston moves to cylinder body end left, and the forward horizontal stand piston ring moves to left and reaches the limit of the position after front cover contacts.The main piston ring drives piston rod and moves right, until with reach the limit of the position after the back balance piston ring contacts.In this moment cylinder body, each chamber reaches pressure balance, realizes the piston rod two sections strokes of retracting left, reaches the F1 gear;
Forward gear F2 is an action of full reduced time of piston rod: according to the Joystick input control order, the solenoid valve II has the electric current input, suction port B1 realizes gas circuit conversion as above and conducting air inlet, the sealing of other suction ports, pressurized gas promoted the forward horizontal stand piston ring and moved to left and reach the limit of the position after front cover contacts this moment.The main piston ring drives piston rod, the back balance piston moves to left and moves right, until with the back balance piston ring with reach the limit of the position after rear end cover contacts.Interior each chamber of cylinder body this moment reaches pressure balance, realizes piston rod full retract action left, reaches the F2 gear.
By technique scheme, the pneumatic execution cylinder of a kind of Novel multi-section of the utility model has following advantages and beneficial effect at least: the spool adhesive moves upward when the electric current input is arranged in solenoid valve, realize the gas conducting of cavity of resorption and the epicoele of conducting piece, by each solenoid valve and multifunctional electromagnetic valves electric and dead electricity finally realize carrying out the gear conversion of cylinder.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is that the pneumatic execution cylinder of a kind of Novel multi-section gas imports schematic diagram.
Fig. 2 is the pneumatic execution cylinder of a kind of Novel multi-section system principle plan view.
Fig. 3 is the pneumatic execution cylinder of a kind of Novel multi-section system principle side view.
1: piston rod 2: front cover
3: cylinder body 4: the secondary piston ring
5: spacer 6: the main piston ring
7: back piston ring 8: rear end cover
9: conducting piece 10: solenoid valve I, II, III, IV
A1, B1, C1, D1, E: suction port
R: N reverses gear: neutral
F1: forward gear F2: forward gear
Embodiment
Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to pneumatic its embodiment of execution cylinder of a kind of Novel multi-section, structure, feature and the effect thereof that the utility model proposes, be described in detail as follows.
Seeing also Fig. 1 is that the pneumatic execution cylinder of a kind of Novel multi-section gas imports schematic diagram.Fig. 2 is the pneumatic execution cylinder of a kind of Novel multi-section system principle plan view.Fig. 3 is the pneumatic execution cylinder of a kind of Novel multi-section system principle side view.
The utility model relates to the pneumatic execution cylinder of a kind of Novel multi-section to be passed through gas at cylinder body and conducting piece internal circulation.The recycling gas pressure intensity, realize the straight reciprocating motion of cylinder piston rod by each cavity pressure balance in the control cylinder body, comprise: piston rod 1, front cover 2, cylinder body 3, secondary piston ring 4, spacer 5, main piston ring 6, back piston ring 7, rear end cover 8, conducting piece 9, solenoid valve 10, suction port A1, B1, C1, D1;
Be provided with described front cover 2, described secondary piston ring 4, described spacer 5, described main piston ring 6 in the left chamber of described cylinder body 3 and be sheathed on described piston rod 1, piston rod 1 connects as one by nut body with described main piston ring 6;
Described cylinder body 3 is provided with described back piston ring 7, described rear end cover 8 in right chamber;
Top, the left and right chamber of described cylinder body 3 is provided with suction port A1, B1, C1, D1;
Be provided with described conducting piece 9, described solenoid valve 10 above described cylinder body 3 one sides, be installed on cylinder body by bolt.
What the utility model adopted is a kind of electromagnetic principle that utilizes, by with gas at cylinder body and conducting piece internal circulation.The recycling gas pressure intensity is realized the straight reciprocating motion of cylinder piston rod by each cavity pressure balance in the control cylinder body.
This cylinder is divided into N, R, F1, four gears of F2, the acquiescence initial position when wherein the N gear is the cylinder installation.When carrying out cylinder working, primary air inlet E all the time with its former communicating, the via by cylinder block 3 inside guarantees that inlet hole A, B, C, D all have gas to import (as shown in Figure 1).Conducting piece 9 is arranged on cylinder body by bolt with solenoid valve 10.9 adhesives of (as the solenoid valve I) conducting piece move upward when the electric current input is arranged in solenoid valve 10, realize the gas conducting of cavity of resorption and the epicoele of conducting piece 9, i.e. conducting between inlet hole A and inlet hole A1 finally realizes A chamber air inlet.By each solenoid valve and multifunctional electromagnetic valves electric and dead electricity finally realize carrying out the gear conversion of cylinder.
Arranging situation during according to the execution cylinder working will illustrate one by one to the working condition of the R that reverses gear, neutral N, forward gear F1, forward gear F2.As shown in Figure 2 and Figure 3:
The R that reverses gear is that piston rod is released state entirely: the solenoid valve III has the electric current input, inlet hole C1 realizes the conducting of above-mentioned gas circuit interpreter, other suction port sealings, pressurized gas promotion this moment back piston ring 7 moves right, main piston ring 6 drives spacer 5, secondary piston ring 4 and piston rod 1 together to left movement, arrives limit position after contacting with front cover 2 to secondary piston ring 4.Interior each chamber of cylinder body this moment reaches pressure balance, realizes that piston rod 1 release arrives the R gear to range;
Neutral N is the action of a gear of piston rod retraction: solenoid valve I, III have the electric current input at this moment, suction port A1, C1 realize above-mentioned gas circuit conversion and conducting air inlet, other suction port sealings, this moment, pressurized gas promoted back piston ring 7 to left movement, secondary piston ring 4 drives spacer 5, secondary piston ring 6 and piston rod 1 and together moves right, and arrives limit position after contacting with cylinder body 3, front cover 2 to secondary piston ring 4.In this moment cylinder body, each chamber reaches pressure balance, realizes piston rod 1 LAP of retracting left, reaches the N gear;
Forward gear F1 is an action of two sections strokes of piston rod retraction: solenoid valve II, IV have the electric current input, suction port B1, D1 realize above-mentioned gas circuit conversion and conducting air inlet, other suction port sealings, this moment, pressurized gas promoted to reach the limit of the position after back piston ring 7 moves to cylinder body 3, front cover 2 left, and secondary piston ring 4 moves to left with (front cover 2 contacts rear) and reaches the limit of the position.Main piston ring 6 drives piston rod 1 and moves right, until with the back piston loop contacts after reach the limit of the position.In this moment cylinder body, each chamber reaches pressure balance, realizes the piston rod two sections strokes of retracting left, reaches the F1 gear;
Forward gear F2 is an action of full reduced time of piston rod: according to the Joystick input control order, the solenoid valve II has the electric current input, suction port B1 realizes gas circuit conversion as above and conducting air inlet, other suction port sealings, pressurized gas promotion this moment secondary piston ring 4 moves to left with (front cover 2 contacts rear) and reaches the limit of the position.Main piston ring 6 drives piston rod 1, back piston hoop left movement to moving right, until with back piston ring 7 with reach the limit of the position after rear end cover 8 contacts.Interior each chamber of cylinder body this moment reaches pressure balance, realizes piston rod full retract action left, reaches the F2 gear.
the above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the structure that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (8)
- The pneumatic execution cylinder of Novel multi-section by with gas at cylinder body and conducting piece internal circulation, the recycling gas pressure intensity is realized the straight reciprocating motion of cylinder piston rod by controlling each cavity pressure balance in cylinder body.It is characterized in that comprising: piston rod (1), front cover (2), cylinder body (3), secondary piston ring (4), spacer (5), main piston ring (6), back piston ring (7), rear end cover (8), conducting piece (9), solenoid valve (10), suction port (A1), (B1), (C1), (D1);Be provided with described front cover (2), described secondary piston ring (4), described spacer (5), described main piston ring (6) in the left chamber of described cylinder body (3) and be sheathed on described piston rod (1), piston rod (1) connects as one by nut body with described main piston ring (6);Be provided with described back piston ring (7), described rear end cover (8) in the right chamber of described cylinder body (3);Top, the left and right chamber of described cylinder body (3) is provided with suction port (A1), (B1), and (C1), (D1);Be provided with described conducting piece (9), described solenoid valve (10) above described cylinder body (3) one sides, be installed on cylinder body by bolt.
- 2. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, is characterized in that cylinder body (3) cavity shape is I-shaped.
- 3. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, the gas source that it is characterized in that inlet hole is E.
- 4. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, it is characterized in that described cylinder body (3) left chamber front end is provided with suction port (A1), left cavity rear end is provided with suction port (B1), right chamber front end is provided with suction port (C1), right cavity rear end is provided with suction port (D1).
- 5. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, it is characterized in that front cover (2) internal diameter be provided with two grooves by seal ring (22), support ring (23), and end cap (21) be sheathed on piston rod.
- 6. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, is characterized in that secondary piston ring (4) internal diameter is provided with two grooves and is sheathed on piston rod by seal ring (42), (45); Secondary piston ring (4) external diameter is provided with two grooves and is installed in cylinder body (3) internal diameter by seal ring (43), support ring (44); And this left side is provided with cushion pad (41), and the right side is provided with cushion pad (46) and is close to shaft shoulder place.
- 7. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, it is characterized in that main piston ring (6) external diameter is provided with two grooves and is installed in cylinder body (3) internal diameter by support ring (61), seal ring (62), and this left side is adjacent with spacer (5), the right side is adjacent with cushion pad (63) and it is fastening to pass through nut (64).
- 8. the pneumatic execution cylinder of a kind of Novel multi-section as claimed in claim 1, it is characterized in that back piston ring (7) is multidiameter shaft, wherein: the path place is provided with a groove and is provided with a groove and is installed in cylinder body (3) internal diameter by seal ring (73) by support ring (71), place, large footpath, and the right-hand member that this shaft shoulder place is provided with seal ring (72), back piston ring (7) is equipped with cushion pad (74), to pass through screw (75) fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740405 CN202992347U (en) | 2012-12-28 | 2012-12-28 | Novel multi-section pneumatic execution cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740405 CN202992347U (en) | 2012-12-28 | 2012-12-28 | Novel multi-section pneumatic execution cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992347U true CN202992347U (en) | 2013-06-12 |
Family
ID=48563526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740405 Expired - Fee Related CN202992347U (en) | 2012-12-28 | 2012-12-28 | Novel multi-section pneumatic execution cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883784A (en) * | 2012-12-28 | 2014-06-25 | 洛阳市黄河软轴控制器股份有限公司 | Novel multistage pneumatic actuating cylinder |
-
2012
- 2012-12-28 CN CN 201220740405 patent/CN202992347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883784A (en) * | 2012-12-28 | 2014-06-25 | 洛阳市黄河软轴控制器股份有限公司 | Novel multistage pneumatic actuating cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104948538A (en) | Plate bending machine servo hydraulic system and construction method thereof | |
| CN202833369U (en) | High speed servo-control hydraulic system | |
| CN104416396A (en) | Hydraulic drive type clamping device | |
| CN105443460B (en) | A kind of gas-liquid pressure-boosting cylinder assembly | |
| CN204739038U (en) | Servo hydraulic system of sheet material bender | |
| CN102020112A (en) | Hydraulic manipulator paw for assembling and disassembling square articles | |
| CN202992347U (en) | Novel multi-section pneumatic execution cylinder | |
| CN103452930A (en) | Hydraulic control system of movable packer | |
| CN202992148U (en) | Multi-section type gear shifting executing air cylinder | |
| CN103557199A (en) | Hydraulic cylinder with variable sections, hydraulic control system and control method of hydraulic cylinder | |
| CN202116932U (en) | Hydraulic system of pulp package pressing machine | |
| CN204900407U (en) | Seal structure of pneumatic cylinder cylinder cap | |
| CN103883784A (en) | Novel multistage pneumatic actuating cylinder | |
| CN202754726U (en) | Jacking hydraulic system of tower crane | |
| CN205500698U (en) | Handle assembly | |
| CN201535282U (en) | Double-tapping large-travel oil cylinder | |
| CN204553137U (en) | Ultrahigh pressure plunger suction booster | |
| CN203162127U (en) | Novel electric control and pneumatic control system | |
| CN202851525U (en) | Rapid hydro-cylinder hydraulic system | |
| CN204003719U (en) | A kind of forklift multi-way valve of load-sensitive | |
| CN204511834U (en) | A kind of glaze spraying machine diaphragm pump | |
| CN203476866U (en) | Hydraulic control system of movable type wrapping machine | |
| CN201836135U (en) | Electrohydraulic reversing valve | |
| CN202971398U (en) | Double-acting type hydraulic cylinder | |
| CN203548409U (en) | Variable cross-section hydraulic cylinder and hydraulic control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130612 Termination date: 20181228 |