CN201082855Y - Hydraulic ram equipped with airscrew - Google Patents
Hydraulic ram equipped with airscrew Download PDFInfo
- Publication number
- CN201082855Y CN201082855Y CNU2007200985066U CN200720098506U CN201082855Y CN 201082855 Y CN201082855 Y CN 201082855Y CN U2007200985066 U CNU2007200985066 U CN U2007200985066U CN 200720098506 U CN200720098506 U CN 200720098506U CN 201082855 Y CN201082855 Y CN 201082855Y
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- Prior art keywords
- screw propeller
- oil cylinder
- plunger
- hydraulic pressure
- hydraulic ram
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- 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
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Abstract
The utility model provides a hydraulic ram for installing the screw propeller, which comprises an oil cylinder and a plunger. The plunger is inserted into the oil cylinder to form a working oil chamber, the stroke of the plunger in the oil cylinder is in 15 to 20 mm, a sealing groove is arranged at the contact part of the plunger and the oil cylinder, a rubber ring with sealing function is arranged in the sealing groove, two holes are arranged on the main body of the oil cylinder, and one hole is the oil inlet opening and the other hole is the gas outlet opening. The utility model has the advantages that the hydraulic ram for installing the screw propeller is used, for the dock which is the key equipment of the ship building and repairing yard, the production plan is calculated according to hours, and after the hydraulic ram is adopted, the dock-using period is advanced for half a day. Through the practice examining, the operation of the hydraulic ram for installing the screw propeller is very convenient, time-saving and labor-saving; and the price is 60 percent lower than the imported hydraulic ram.
Description
Technical field
The utility model relates to a kind of hydraulic pressure top, particularly a kind of hydraulic pressure top that screw propeller is installed.
Background technology
General boats and ships repair process in, the dismounting screw propeller is the work that can not exempt from.From the situation of reality, screw propeller has two kinds with the installation form of stern tube shaft: a kind of is to have key to be connected, and another kind is that no key connects.
For key bonded assembly screw propeller is arranged, the installation of screw propeller need rotate the extrusion spiral oar to make it to closely cooperate with stern tube shaft with propellernut, relies on connecting key to come transfer torque.When screw propeller was installed, the rotation of nut was a muscle power job, because the weight of nut is all very big, little has tens kilograms, big kilograms up to a hundred.Need during installation to be enclosed within on the nut, rely on manually to swing sledgehammer or utilize ram to clash into spanner to make the nut rotational lock with special wrench.This operating procedure can not guarantee nut can both be in place each time, so the fit quality of screw propeller and stern tube shaft also is difficult to guarantee.
And for the installation of no key screw propeller, mounting process is comparatively advanced, and oar also is guaranteed with the fit quality of axle, so large ship all adopts no key connection at present.For the instrument of the mounting process of no key bonded assembly screw propeller and employing with have the key bonded assembly to be not quite similar.
It is to rely on connecting key to come transfer torque that key bonded assembly screw propeller is arranged, and no key bonded assembly screw propeller is to rely on the interference fit of the screw propeller and the stern tube shaft conical surface to come transfer torque.For guaranteeing this amount of being full of, must before installing, utilize oil pressure that it is expanded the sub-endoporus of propeller boss earlier and obtain.So need usefulness that is used for realizing the propeller hub radial expansion of high-pressure oil pump.Yet,, and cause moving backward of screw propeller because the effect of internal bore pressures oil also can produce axial component backward.For this power of balance must be provided with a hydraulic pressure top between screw propeller rear end and nut, promote screw propeller to reach with the axial force that produces forward.For the installation that the key screw propeller is arranged, the past is to adopt sledgehammer or percussion hammer to hit spanner, and nut is screwed.Time-consuming, effort, installation quality can not guarantee.2. for the installation that the key screw propeller is arranged, sledgehammer or percussion hammer can not adopt, because the axial force that this mode produces is far from being enough, must adopts hydraulic pressure to push up and execute the practical operation work.And the hydraulic pressure of selecting for use in the past top all is tonnage less (50-100 tons), but the situation of reality is that the installation axial force of no key screw propeller is generally between 400 tons-800 tons.So the hydraulic pressure jacking row with 4-8 must be made up, becomes the installation that screw propeller is finished on the combination top.Just need manufacture mold like this and will make up the top and fix, carry out the installation of screw propeller again, though economize a little power, unusual trouble and to produce setup time long according to field condition.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model provides a kind of hydraulic pressure top that screw propeller is installed, and it is convenient to be beneficial to installation, saves time, laborsaving, and cost-cutting is raised the efficiency.
For achieving the above object, the technical solution adopted in the utility model provides a kind of hydraulic pressure top that screw propeller is installed, wherein: this hydraulic pressure top includes oil cylinder and plunger two parts, described plunger inserts and forms working oil chamber in the oil cylinder, and plunger is about between the 15-20mm at in-oil cylinder stroke, and the position that described plunger contacts with oil cylinder is provided with seal groove, the cushion rubber that seals is housed in this groove, the body of oil cylinder is provided with two holes, and the one, oil inlet, another is an exhausr port.
Effect of the present utility model is to use hydraulic pressure top that screw propeller is installed key equipment--the dock for dockyard, manufacturing program in hour, make the depressed place phase shift to an earlier date time half a day at least after having adopted this hydraulic pressure top.Through practice test, the hydraulic pressure top that screw propeller is installed is very easy to use, saves time, laborsaving, and price is also than the hydraulic pressure top low 60% of import.
Description of drawings
Fig. 1 is the total figure in hydraulic pressure top of installation screw propeller of the present utility model;
Fig. 2 is a screw propeller dedicated hydraulic of the present utility model top tooling drawing.
Among the figure:
1. oil inlet 2. oil cylinders 3. plunger 4.o RunddichtringOs
5. exhausr port 6. working oil chambers 7. propellernuts 8. screw propellers
9. stern tube shaft 10. high-pressure oil pumps 11. shutoff valves
12. pressure gauge valve 13. compression indicators 14. high pressure fuel pipes
The specific embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the hydraulic pressure roof construction of installation screw propeller of the present utility model.
As shown in Figure 1, the hydraulic pressure top of installation screw propeller of the present utility model includes oil cylinder 2 and plunger 3 two parts, described plunger 3 inserts and forms working oil chamber 6 in the oil cylinder 2, the stroke H of plunger 3 in oil cylinder 2 is about between the 15-20mm, and described plunger 3 is provided with seal groove with the position that oil cylinder 2 contacts, and the cushion rubber 4 that seals is housed in this groove, the body of oil cylinder 2 is provided with two holes, the one, fuel feed hole 1, another is a deflation hole 5, described cushion rubber 4 is an o type cushion rubber.
The hydraulic pressure top of installation screw propeller of the present utility model is achieved in that
According to the size of screw propeller and size that axial force is installed, select the hydraulic pressure top of the installation screw propeller of appropriate size to be placed between screw propeller 8 and the propellernut 7, and propellernut 7 revolved come to the position.High pressure fuel pipe 14 is received the fuel feed hole 1 on hydraulic pressure top, push up oil-filled exhaust to this hydraulic pressure then, when seeing that exhausr port 5 has oil to emerge, and just blocks with plug.Carry out the erection work of screw propeller 8 subsequently as requested, until being in place.Therebetween, control by pressure gauge valve 12, compression indicator 13 and shutoff valve 11.
The hydraulic pressure top assembly operation explanation of screw propeller is installed:
As shown in Figure 1, earlier two o RunddichtringOs 4 are sleeved in two oil grooves of plunger 3, and then the plunger 3 that o RunddichtringO 4 will be housed is packed in the oil cylinder 2 gently.
The hydraulic pressure top frock operation instructions of screw propeller is installed:
Earlier that the conical surface and the screw propeller 8 endoporus cleaning of stern tube shaft 9 is clean, then screw propeller 8 is enclosed within on the conical surface of stern tube shaft 9 gently, and screw propeller 8 is close to the conical surface of stern tube shaft 9 as far as possible, select the hydraulic pressure top of suitable installation screw propeller to be placed between screw propeller 8 and the nut 7 according to the size of screw propeller 8 and the size of installation axial force, and propellernut 7 revolved come to the position, as shown in Figure 2.It should be noted that when install on the hydraulic pressure top that screw propeller is installed and centering to place that eccentric the existence must not be arranged.After this hydraulic pressure top installs, again high pressure fuel pipe 14 is connected, oil-filled then venting, see that exhausr port 5 has oil to emerge after, just exhausr port 5 is stopped up with plug.In practical operation, except the hydraulic pressure top that screw propeller is installed, also need a high-pressure oil pump 10 to come to provide high pressure oil for the sub-radial expansion of propeller hub.And the hydraulic pressure of this installation screw propeller top just provides axial force for the installation of screw propeller.Then, match with high-pressure oil pump 10 and progressively screw propeller 8 bit by bit progressively is in place.
After screw propeller 8 is in place,, and then the oil pressure unloading on the hydraulic pressure top of screw propeller will be installed earlier with the unloading of radial pressure oil.Successively propellernut 7 rotation is unloaded at last, again this hydraulic pressure top is unloaded, and then propellernut 7 is installed to that axle is gone up and rotation and screw propeller 8 fastening.So far, erection work all finishes.
Claims (2)
1. the hydraulic pressure that screw propeller is installed pushes up, it is characterized in that: this hydraulic pressure top includes oil cylinder (2) and plunger (3) two parts, described plunger (3) inserts and forms working oil chamber (6) in the oil cylinder (2), the stroke of plunger (3) in oil cylinder (2) is about between the 15-20mm, described plunger (3) is provided with seal groove with the position that oil cylinder (2) contacts, and the cushion rubber (4) that seals is housed in this groove, and the body of oil cylinder (2) is provided with two holes, the one, fuel feed hole (1), another is deflation hole (5).
2. the hydraulic pressure top of installation screw propeller according to claim 1, it is characterized in that: described cushion rubber (4) is an o type cushion rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200985066U CN201082855Y (en) | 2007-09-12 | 2007-09-12 | Hydraulic ram equipped with airscrew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200985066U CN201082855Y (en) | 2007-09-12 | 2007-09-12 | Hydraulic ram equipped with airscrew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201082855Y true CN201082855Y (en) | 2008-07-09 |
Family
ID=39625320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200985066U Expired - Fee Related CN201082855Y (en) | 2007-09-12 | 2007-09-12 | Hydraulic ram equipped with airscrew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201082855Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104648611A (en) * | 2013-11-18 | 2015-05-27 | 中船桂江造船有限公司 | Propeller mounting tool |
| CN104646916A (en) * | 2013-11-18 | 2015-05-27 | 中船桂江造船有限公司 | Propeller disassembly and assembly method |
| CN105836046A (en) * | 2016-04-29 | 2016-08-10 | 广西金达造船有限公司 | Simple method for replacing propellers underwater |
| CN106218809A (en) * | 2016-08-09 | 2016-12-14 | 中船桂江造船有限公司 | Propeller for vessels and stern tube shaft scrape method of completing the square |
| CN106404374A (en) * | 2016-10-26 | 2017-02-15 | 武汉理工大学 | Simulated testing platform and testing method for oil-hydraulic mounting and dismounting of ship propeller |
| CN112811344A (en) * | 2019-11-18 | 2021-05-18 | 中船广西船舶及海洋工程有限公司 | Feed-through type press-fitting propeller jack |
-
2007
- 2007-09-12 CN CNU2007200985066U patent/CN201082855Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104648611A (en) * | 2013-11-18 | 2015-05-27 | 中船桂江造船有限公司 | Propeller mounting tool |
| CN104646916A (en) * | 2013-11-18 | 2015-05-27 | 中船桂江造船有限公司 | Propeller disassembly and assembly method |
| CN105836046A (en) * | 2016-04-29 | 2016-08-10 | 广西金达造船有限公司 | Simple method for replacing propellers underwater |
| CN106218809A (en) * | 2016-08-09 | 2016-12-14 | 中船桂江造船有限公司 | Propeller for vessels and stern tube shaft scrape method of completing the square |
| CN106404374A (en) * | 2016-10-26 | 2017-02-15 | 武汉理工大学 | Simulated testing platform and testing method for oil-hydraulic mounting and dismounting of ship propeller |
| CN112811344A (en) * | 2019-11-18 | 2021-05-18 | 中船广西船舶及海洋工程有限公司 | Feed-through type press-fitting propeller jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN XINGANG SHIPBUILDING HEAVY INDUSTRY CO., L Free format text: FORMER OWNER: TIANJIN XINGANG SHIPYARD Effective date: 20111205 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111205 Address after: 300456 No. 1 Factory Street, Tanggu, Tianjin, Binhai New Area, Xingang, China Patentee after: Tianjin Xingang Shipbuilding Heavy Industry Co., Ltd. Address before: 300456, No. 1, Factory Street, Xingang, Tanggu, Tianjin Patentee before: Tianjin Xingang Ship Factory |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20110912 |