CN203009417U - Connector anti-falling self-locking pressure cylinder - Google Patents

Connector anti-falling self-locking pressure cylinder Download PDF

Info

Publication number
CN203009417U
CN203009417U CN 201220743521 CN201220743521U CN203009417U CN 203009417 U CN203009417 U CN 203009417U CN 201220743521 CN201220743521 CN 201220743521 CN 201220743521 U CN201220743521 U CN 201220743521U CN 203009417 U CN203009417 U CN 203009417U
Authority
CN
China
Prior art keywords
cylinder barrel
oil
cylinder
oily
protecgulum
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
Application number
CN 201220743521
Other languages
Chinese (zh)
Inventor
张建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan July Hydropneumatic Equipment Co Ltd
Original Assignee
Dongguan July Hydropneumatic Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongguan July Hydropneumatic Equipment Co Ltd filed Critical Dongguan July Hydropneumatic Equipment Co Ltd
Priority to CN 201220743521 priority Critical patent/CN203009417U/en
Application granted granted Critical
Publication of CN203009417U publication Critical patent/CN203009417U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Actuator (AREA)

Abstract

The utility model relates to the pressure cylinder technical field, in particular to a connector anti-falling self-locking pressure cylinder. The connector anti-falling self-locking pressure cylinder comprises a pressure cylinder barrel, a high pressure cylinder barrel, a cylinder barrel and an oil storage cylinder barrel, wherein the pressure cylinder barrel, the high pressure cylinder barrel and the cylinder barrel are sequentially connected; the oil storage cylinder barrel is arranged besides the pressure cylinder barrel; and the connector anti-falling self-locking pressure cylinder further comprises an over oil cylinder barrel. When a connector of the cylinder barrel drops down, the over oil cylinder barrel works, hydraulic oil entering from the oil storage cylinder barrel enters a cavity between a front piston and a first middle body through the over oil cylinder barrel, the front piston is pushed to move upward, and then an air pressure rod connected with a front rod is driven to generate upward acting force which is balanced with the air pressure rod, and therefore the phenomenon that the air pressure rod falls down to break and press objects can be prevented from occurring, rejection rates are reduced, and risk and production cost of an enterprise are effectively reduced.

Description

Joint anticreep self locking type pressurized cylinder
Technical field
The utility model relates to the pressurized cylinder technical field, relates in particular to joint anticreep self locking type pressurized cylinder.
Background technique
Use widely pressurized cylinder in industries such as machining, packings at present, along with people in use demand and the kind of pressurized cylinder is also more and more.Product from existing in the market roughly can be divided into pneumatic cylinder (being air compressing cylinder), oil hydraulic cylinder and pneumohydraulic pressure-cylinder.Wherein pneumatic cylinder has advantages of that pressurized air is obtained conveniently, clean environment firendly, and oil hydraulic cylinder has the high and incompressible advantage of hydraulic oil of ouput force, and pneumohydraulic pressure-cylinder obtains user's vast concern due to the advantage of having gathered above-mentioned two kinds of pressurized cylinders.Pressurized cylinder has in the market generally comprised oil storage cylinder barrel, supercharging cylinder barrel and precompressed cylinder barrel, at first hydraulic oil carries out a supercharging in the oil storage cylinder barrel, after enter into and carry out secondary booster in the supercharging cylinder barrel, thereby the punch rod that promotes in the precompressed cylinder barrel is carried out punching press to object.Present pressurized cylinder is when work, for guaranteeing normal to-and-fro motion, usually can be connected with the gas port joint at the precompressed cylinder barrel, yet when the gas port joint due to aging or when insecure coming off is installed, pre-depression bar in the precompressed cylinder barrel easily damages because the gravity of self can fall down the object that preparation is suppressed, and makes reject rate increase, waste raw material, increased the cost of production of enterprise; Especially when this object was more valuable, the loss of bringing for enterprise often was unable to estimate.
Summary of the invention
The purpose of this utility model is to provide joint anticreep self locking type pressurized cylinder for the deficiencies in the prior art, this joint anticreep self locking type pressurized cylinder can prevent because Joint's falling off causes pre-depression bar and damage the phenomenon of suppressing object, reduce reject rate, reduce risk and the cost of production of enterprise.
For achieving the above object, the utility model is achieved through the following technical solutions:
Joint anticreep self locking type pressurized cylinder, include supercharging cylinder barrel, high pressure cylinder barrel, cylinder barrel and oil storage cylinder barrel, described supercharging cylinder barrel, the gentle cylinder barrel of high pressure cylinder barrel connect successively, described oil storage cylinder barrel is arranged at the side of supercharging cylinder barrel, described cylinder barrel is connected by the first intermediate with the high pressure cylinder barrel, connect by the second intermediate between described high pressure cylinder barrel and supercharging cylinder barrel, the front end of described cylinder barrel is provided with protecgulum, and the rear end of described supercharging cylinder barrel is provided with bonnet; Described oil storage cylinder barrel includes oil cylinder protecgulum and oil cylinder bonnet, be provided with fixing rod between described oil cylinder protecgulum and oil cylinder bonnet, the two ends of described fixing rod are fixedly connected with oil cylinder bonnet with oil cylinder protecgulum respectively, described oil cylinder protecgulum offers oil duct, this oil duct is communicated with the second intermediate, and described oil cylinder bonnet is provided with gas port F; Be provided with pneumaticpiston in the cavity of the cylinder barrel that described protecgulum and the first intermediate form, described pneumaticpiston is connected with atmospheric pressure pole, the extended protecgulum of this atmospheric pressure pole, and described protecgulum is provided with gas port A; Be provided with secondary piston in the cavity of the high pressure cylinder barrel that described the first intermediate and the second intermediate form, described secondary piston is connected with front bar, and this front bar is passed the first intermediate and is connected with atmospheric pressure pole, and described the second intermediate is provided with gas port C; Be provided with charged piston in the cavity of the supercharging cylinder barrel that described the second intermediate and bonnet form, described charged piston is connected with booster rod, and this booster rod can stretch into the second intermediate, and described bonnet is provided with gas port D; Also included cylinder tube, the described two ends of crossing cylinder tube were provided with oily protecgulum and crossed oily bonnet, go up during the described middle part of crossing cylinder tube is provided with oily end cap and in descended oily end cap, went up in described oily end cap with in descended oily end cap to be provided with passage; The oily bonnet of described mistake with in went up oily end cap and formed oil pocket, be provided with anticreep piston and anticreep spring in the cavity that descended oily end cap and excessively oily protecgulum to form in described, one end of described anticreep spring contacts with the anticreep piston, the other end of anticreep spring is connected with the oily protecgulum of mistake, described anticreep piston is connected with anti-drop rod, went up during this anti-drop rod stretches into oily end cap and in descended in the passage of oily end cap; The oily bonnet of described mistake is connected with the second intermediate, crosses between oily bonnet and the second intermediate and is provided with oil duct; Went up oily end cap in described and be connected with the first intermediate, in went up between oily end cap and the first intermediate and be provided with oil duct; Descended oily end cap to be provided with gas port B in described, described the first intermediate is provided with gas port E, and described gas port B and gas port E are communicated with.
Preferably, be connected with rapid escape valve by connecting tracheae between described gas port B and gas port E.
Further, the front end of described protecgulum is provided with flange, and described flange is fixedly connected with protecgulum.
Wherein, described oil cylinder bonnet offers oil hole, and this oil hole is communicated with the inner chamber of oil storage cylinder barrel.
Wherein, described oil cylinder bonnet offers peep hole, and this peep hole is communicated with the inner chamber of oil storage cylinder barrel.
Wherein, described oil cylinder protecgulum offers oil outlet, and this oil outlet is communicated with the inner chamber of oil storage cylinder barrel.
Again further, described the second intermediate is provided with pressure gauge, and this pressure gauge is communicated with the inner chamber of high pressure cylinder barrel.
The beneficial effects of the utility model are:
Joint anticreep self locking type pressurized cylinder described in the utility model was by arranging cylinder tube, when the joint of cylinder barrel drops, cross cylinder tube work this moment, the hydraulic oil that enters from the oil storage cylinder barrel enters cavity between secondary piston and the first intermediate by crossing cylinder tube, the promotion secondary piston moves upward, thereby drive the atmospheric pressure pole that is connected with front bar and produce active force upwards, gravitational equilibrium with atmospheric pressure pole itself, prevent atmospheric pressure pole and fall to damaging the phenomenon of suppressing object, reduce reject rate, effectively reduce risk and the cost of production of enterprise.
Description of drawings
Fig. 1 is the plan view of the utility model joint anticreep self locking type pressurized cylinder.
Fig. 2 is the rear view of the utility model joint anticreep self locking type pressurized cylinder.
Fig. 3 is the plan view of the utility model joint anticreep self locking type pressurized cylinder.
Fig. 4 is the generalized section of the G-G of Fig. 3.
Fig. 5 is the generalized section of the F-F of Fig. 3.
Include mark in Fig. 1 to Fig. 5:
1---supercharging cylinder barrel 2---high pressure cylinder barrel
3---cylinder barrel 4---oil storage cylinder barrel
5---first intermediate 6---second intermediate
7---crossing cylinder tube 8---connect tracheae
9---rapid escape valve 10---flange
11---bonnet 12---charged piston
13---booster rod 21---secondary piston
22---front bar 31---protecgulum
32---pneumaticpiston 33---atmospheric pressure pole
311---gas port A 41---oil cylinder protecgulum
42---oil cylinder bonnet 43---fixing rod
421---gas port F 51---gas port E
61---gas port C 62---pressure gauge
71---crossing oily protecgulum 72---are crossed oily bonnet
Descended oily end cap in 73---in went up oily end cap 74---
75---anticreep piston 76---anticreep spring
77---anti-drop rod 741---gas port B.
Embodiment
Referring to Fig. 1 to Fig. 5, below in conjunction with accompanying drawing, the utility model is described in detail.
Joint anticreep self locking type pressurized cylinder described in the utility model, include supercharging cylinder barrel 1, high pressure cylinder barrel 2, cylinder barrel 3 and oil storage cylinder barrel 4, described supercharging cylinder barrel 1, high pressure cylinder barrel 2 are connected with cylinder barrel successively and are connected, described oil storage cylinder barrel 4 is arranged at the side of supercharging cylinder barrel 1, described cylinder barrel 3 is connected by the first intermediate 5 with high pressure cylinder barrel 2, connect by the second intermediate 6 between described high pressure cylinder barrel 2 and supercharging cylinder barrel 1, the front end of described cylinder barrel 3 is provided with protecgulum 31, and the rear end of described supercharging cylinder barrel 1 is provided with bonnet 11; Described oil storage cylinder barrel 4 includes oil cylinder protecgulum 41 and oil cylinder bonnet 42, be provided with fixing rod 43 between described oil cylinder protecgulum 41 and oil cylinder bonnet 42, the two ends of described fixing rod 43 are fixedly connected with oil cylinder bonnet 42 with oil cylinder protecgulum 41 respectively, described oil cylinder protecgulum 41 offers oil duct, this oil duct is communicated with the second intermediate 6, and described oil cylinder bonnet 42 is provided with gas port F 421; Be provided with pneumaticpiston 32 in the cavity of the cylinder barrel 3 that described protecgulum 31 and the first intermediate 5 form, described pneumaticpiston 32 is connected with atmospheric pressure pole 33, the extended protecgulum 31 of this atmospheric pressure pole 33, and described protecgulum 31 is provided with gas port A 311; Be provided with secondary piston 21 in the cavity of the high pressure cylinder barrel 2 that described the first intermediate 5 and the second intermediate 6 form, described secondary piston 21 is connected with front bar 22, this front bar 22 is passed the first intermediate 5 and is connected with atmospheric pressure pole 33, and described the second intermediate 6 is provided with gas port C 61; Be provided with charged piston 12 in the cavity of the supercharging cylinder barrel 1 that described the second intermediate 6 and bonnet 11 form, described charged piston 12 is connected with booster rod 13, and this booster rod 13 stretches into the second intermediate 6, and described bonnet 11 is provided with gas port D 111; Also included cylinder tube 7, the described two ends of crossing cylinder tube 7 were provided with oily protecgulum 71 and crossed oily bonnet 72, go up during the described middle part of crossing cylinder tube 7 is provided with oily end cap 73 and in descended oily end cap 74, went up in described oily end cap 73 with in descended oily end cap 74 to be provided with passage; The oily bonnet of described mistake 72 with in went up oily end cap 73 and formed oil pocket, be provided with anticreep piston 75 and anticreep spring 76 in the cavity that descended oily end cap 74 and excessively oily protecgulum 71 to form in described, one end of described anticreep spring 76 contacts with anticreep piston 75, the other end of anticreep spring 76 is connected with the oily protecgulum 71 of mistake, described anticreep piston 75 is connected with anti-drop rod 77, went up during this anti-drop rod 77 stretches into oily end cap 73 and in descended in the passage of oily end cap 74; The oily bonnet 72 of described mistake is connected with the second intermediate 6, crosses between oily bonnet 72 and the second intermediate 6 and is provided with oil duct; Went up oily end cap 73 in described and be connected with the first intermediate 5, in went up between oily end cap 73 and the first intermediate 5 and be provided with oil duct; Descended oily end cap 74 to be provided with gas port B 741 in described, described the first intermediate 5 is provided with gas port E 51, and described gas port B 741 and gas port E 51 are communicated with; As preferred embodiment, are connected connection with rapid escape valve by connecting tracheae 8 between described gas port B 741 and gas port E 51.
Working procedure of the present utility model is as follows:
at first in the interior injection liquid force feed of oil storage cylinder barrel 4, gas port D 111 and gas port F 421 input gases, punching press is carried out on hydraulic oil surface in oil storage cylinder barrel 4, and the oil duct of the hydraulic oil of oil storage cylinder barrel 4 interior pressurizeds by oil cylinder protecgulum 41 enters in cavity between secondary piston 21 and the second intermediate 6, gas port D 111 input gas punching press is again carried out on the hydraulic oil surface that enters into cavity between secondary piston 21 and the second intermediate 6, promote secondary piston 21 and down move with front bar 22, suppress thereby drive the 33 pairs of objects of atmospheric pressure pole that are connected with front bar 22, then by gas port A 311 and gas port C 61 input gases, the gas push pneumaticpiston 32 of gas port A 311 inputs drives atmospheric pressure pole 33 and does drawback movement, the gas push charged piston 12 of gas port C 61 inputs drives booster rod 13 and does drawback movement, and so forth, can effectively improve the power of suppressing of movement velocity and output, when the joint that connects as the gas port A 311 at protecgulum 31 places of cylinder barrel 3 drops, gas port B 741 input gases, gas pushing anticreep piston 75 and anticreep spring 76 that gas port B 741 enters, thereby make the passage of going up oily end cap 73 in anti-drop rod 77 disengagings that are connected with anticreep piston 75, this moment the first intermediate 5 oil duct with in went up the channel connection of oily end cap 73, because gas port E 51 is emptying with the gas between secondary piston 21 and the first intermediate 5, this moment, hydraulic oil entered in the cavity of cylinder tube 7 by the oil duct of crossing oily bonnet 72, and through in went up the passage of oily end cap 73 and the first intermediate 5 oil duct enter in cavity between secondary piston 21 and the first intermediate 5, thereby secondary piston 21 and front bar 22 are produced active force upwards, because front bar 22 is connected with atmospheric pressure pole 33, can prevent thus atmospheric pressure pole 33 and fall to damaging the phenomenon of suppressing object.
joint anticreep self locking type pressurized cylinder described in the utility model was by arranging cylinder tube 7, when the joint of cylinder barrel 3 drops, cross cylinder tube 7 work this moment, the hydraulic oil that enters from oil storage cylinder barrel 4 enters cavity between secondary piston 21 and the first intermediate 5 by crossing cylinder tube 7, promoting secondary piston 21 moves upward, thereby drive the atmospheric pressure pole 33 that is connected with front bar 22 and produce active force upwards, the gravitational equilibrium own with atmospheric pressure pole 33, prevent atmospheric pressure pole 33 and fall to damaging the phenomenon of suppressing object, reduce reject rate, effectively reduce risk and the cost of production of enterprise.
Further, the front end of described protecgulum 31 is provided with flange 10, and described flange 10 is fixedly connected with protecgulum 31.The utility model arranges flange 10 by the front end at the protecgulum 31 of cylinder barrel 3, can further strengthen the sealing of cylinder barrel 3, strengthens practicability of the present utility model.
Again further, described oil cylinder bonnet 42 offers the oil hole (not shown), and this oil hole is communicated with the inner chamber of oil storage cylinder barrel 4, when the hydraulic oil in oil storage cylinder barrel 4 is not enough, can replenish by this oil hole; Described oil cylinder bonnet 42 offers the peep hole (not shown), and this peep hole is communicated with the inner chamber of oil storage cylinder barrel 4, and how many operator can observe the hydraulic oil of oil storage cylinder barrel 4 by this peep hole, in order to can in time give the bulking liquor force feed; Described oil cylinder protecgulum 41 offers the oil outlet (not shown), this oil outlet is communicated with the inner chamber of oil storage cylinder barrel 4, operator can change the hydraulic oil in oil storage cylinder barrel 4 by this oil outlet, avoid the too much impurity of the interior deposition of oil storage cylinder barrel 4, affect running of the present utility model.
Further, described the second intermediate 6 is provided with pressure gauge 62, and this pressure gauge 62 is communicated with the inner chamber of high pressure cylinder barrel 2.In the utility model, by at second intermediate 6 place's Bonding pressure tables 62, can detect the pressure size in high pressure cylinder barrel 2, thereby adjust, further improved Safety performance of the present utility model.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.

Claims (7)

1. joint anticreep self locking type pressurized cylinder, include supercharging cylinder barrel, high pressure cylinder barrel, cylinder barrel and oil storage cylinder barrel, described supercharging cylinder barrel, the gentle cylinder barrel of high pressure cylinder barrel connect successively, described oil storage cylinder barrel is arranged at the side of supercharging cylinder barrel, described cylinder barrel is connected by the first intermediate with the high pressure cylinder barrel, connect by the second intermediate between described high pressure cylinder barrel and supercharging cylinder barrel, the front end of described cylinder barrel is provided with protecgulum, and the rear end of described supercharging cylinder barrel is provided with bonnet; Described oil storage cylinder barrel includes oil cylinder protecgulum and oil cylinder bonnet, be provided with fixing rod between described oil cylinder protecgulum and oil cylinder bonnet, the two ends of described fixing rod are fixedly connected with oil cylinder bonnet with oil cylinder protecgulum respectively, described oil cylinder protecgulum offers oil duct, this oil duct is communicated with the second intermediate, and described oil cylinder bonnet is provided with gas port F; Be provided with pneumaticpiston in the cavity of the cylinder barrel that described protecgulum and the first intermediate form, described pneumaticpiston is connected with atmospheric pressure pole, and this atmospheric pressure pole stretches out protecgulum, and described protecgulum is provided with gas port A; Be provided with secondary piston in the cavity of the high pressure cylinder barrel that described the first intermediate and the second intermediate form, described secondary piston is connected with front bar, and this front bar is passed the first intermediate and is connected with atmospheric pressure pole, and described the second intermediate is provided with gas port C; Be provided with charged piston in the cavity of the supercharging cylinder barrel that described the second intermediate and bonnet form, described charged piston is connected with booster rod, and this booster rod stretches into the second intermediate, and described bonnet is provided with gas port D, it is characterized in that:
Also included cylinder tube, the described two ends of crossing cylinder tube were provided with oily protecgulum and crossed oily bonnet, go up during the described middle part of crossing cylinder tube is provided with oily end cap and in descended oily end cap, went up in described oily end cap with in descended oily end cap to be provided with passage;
The oily bonnet of described mistake with in went up oily end cap and formed oil pocket, be provided with anticreep piston and anticreep spring in the cavity that descended oily end cap and excessively oily protecgulum to form in described, one end of described anticreep spring contacts with the anticreep piston, the other end of anticreep spring is connected with the oily protecgulum of mistake, described anticreep piston is connected with anti-drop rod, went up during this anti-drop rod stretches into oily end cap and in descended in the passage of oily end cap;
The oily bonnet of described mistake is connected with the second intermediate, crosses between oily bonnet and the second intermediate and is provided with oil duct; Went up oily end cap in described and be connected with the first intermediate, in went up between oily end cap and the first intermediate and be provided with oil duct; Descended oily end cap to be provided with gas port B in described, described the first intermediate is provided with gas port E, and described gas port B and gas port E are communicated with.
2. joint anticreep self locking type pressurized cylinder according to claim 1, is characterized in that: be connected with rapid escape valve by connecting tracheae between described gas port B and gas port E.
3. joint anticreep self locking type pressurized cylinder according to claim 1, it is characterized in that: the front end of described protecgulum is provided with flange, and described flange is fixedly connected with protecgulum.
4. joint anticreep self locking type pressurized cylinder according to claim 1 is characterized in that: a described oil cylinder bonnet offers oil hole, and this oil hole is communicated with the inner chamber of oil storage cylinder barrel.
5. joint anticreep self locking type pressurized cylinder according to claim 1 is characterized in that: a described oil cylinder bonnet offers peep hole, and this peep hole is communicated with the inner chamber of oil storage cylinder barrel.
6. joint anticreep self locking type pressurized cylinder according to claim 1 is characterized in that: a described oil cylinder protecgulum offers oil outlet, and this oil outlet is communicated with the inner chamber of oil storage cylinder barrel.
7. joint anticreep self locking type pressurized cylinder according to claim 1, it is characterized in that: described the second intermediate is provided with pressure gauge, and this pressure gauge is communicated with the inner chamber of high pressure cylinder barrel.
CN 201220743521 2012-12-29 2012-12-29 Connector anti-falling self-locking pressure cylinder Expired - Fee Related CN203009417U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220743521 CN203009417U (en) 2012-12-29 2012-12-29 Connector anti-falling self-locking pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220743521 CN203009417U (en) 2012-12-29 2012-12-29 Connector anti-falling self-locking pressure cylinder

Publications (1)

Publication Number Publication Date
CN203009417U true CN203009417U (en) 2013-06-19

Family

ID=48601014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220743521 Expired - Fee Related CN203009417U (en) 2012-12-29 2012-12-29 Connector anti-falling self-locking pressure cylinder

Country Status (1)

Country Link
CN (1) CN203009417U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108050130A (en) * 2017-12-30 2018-05-18 广东顺德普南气动科技有限公司 Locking cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108050130A (en) * 2017-12-30 2018-05-18 广东顺德普南气动科技有限公司 Locking cylinder

Similar Documents

Publication Publication Date Title
CN202638659U (en) Atomizing pump with double springs
CN201836144U (en) Hydraulic cylinder with guiding and detecting functions
CN203009417U (en) Connector anti-falling self-locking pressure cylinder
CN201144897Y (en) Gas-liquid reinforcement pressure cylinder
CN201934108U (en) Hydraulic control one-way valve
CN202900599U (en) Compressed air cylinder cover of separating film compressor
CN203892278U (en) Manual liquid supercharging device
CN203308811U (en) Novel oil-gas separation type automatic oil filling gas exhausting pressure cylinder
CN201215123Y (en) Pneumatic auto reciprocating pneumatic cylinder
CN205117877U (en) Single pole two -way ram formula pneumatic cylinder
CN202492015U (en) Novel vacuum flask pump head structure
CN103410721B (en) Fluid end device of plunger pump
CN202971410U (en) Double-stroke cylinder
CN205613785U (en) Ring mould cleaning device
CN204941854U (en) A kind of air compressor filter
CN103939313A (en) Manual two-stage rapid oil delivery pump
CN203009449U (en) Positioning-type pressure cylinder
CN203009418U (en) Side-by-side-type pressurizing cylinder
CN203926172U (en) Novel gas-liquid power cylinder
CN208643979U (en) A kind of forging machine tool hydraulic part
CN202718949U (en) Large-tonnage cylinder
CN209424365U (en) Thin-wall tube-shaped workpiece is extended discharging device
CN201693796U (en) Multipurpose pressure device
CN102720725B (en) Multi-stage push cylinder
CN201795222U (en) Sealing bolt for automatically regulating sealing pressure

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: 20130619

Termination date: 20181229