CN104477795A - Multi-stage oil cylinder telescopic device and method for installing multi-state oil cylinder telescopic device on telescopic crane - Google Patents
Multi-stage oil cylinder telescopic device and method for installing multi-state oil cylinder telescopic device on telescopic crane Download PDFInfo
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- CN104477795A CN104477795A CN201510015822.1A CN201510015822A CN104477795A CN 104477795 A CN104477795 A CN 104477795A CN 201510015822 A CN201510015822 A CN 201510015822A CN 104477795 A CN104477795 A CN 104477795A
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- oil cylinder
- telescopic
- stage
- telescopic oil
- hydraulic fluid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
Abstract
The invention discloses a multi-stage oil cylinder telescopic device and a method for installing the multi-state oil cylinder telescopic device on a telescopic crane, and relates to the technical field of ship manufacturing. The device comprises at least two telescopic oil cylinders fixed to a crane lifting arm and connected in series through a hydraulic pipe, each telescopic oil cylinder is provided with four oil ports, and the crane lifting arm comprises a fixed arm, a first telescopic arm, a second telescopic arm and a third telescopic arm. Compared with the prior art, the device is simple in structure, the structure of the whole crane is stable, stability and sealing performance of the oil cylinders are good, operation is convenient, maintenance and replacement are convenient, and multi-stage stretching and retracting of the telescopic crane lifting arm for a ship can be achieved.
Description
Technical field
The present invention relates to shipbuilding technical field, especially a kind of multi-stage oil cylinder retractor device on boats and ships crane arm and the installation method on telehoist thereof.
Background technology
In shipping industry, marine telescope crane applications is more and more extensive, multi-stage telescopic hoisting crane especially peculiar to vessel, and this kind of hoisting crane operating range is large, deposits scope little, is greatly favored by consumers.Its arm of marine telescope hoisting crane is all realize stretching with telescopic oil cylinder, existing marine telescope hoisting crane is generally single-stage telehoist, two-stage peculiar to vessel even three grades of telehoists gets more and more, and this kind of hoisting crane is all generally by two flexible or three telescopic oil cylinders realization at present, that is: a telescopic oil cylinder has two even three piston rods, with this complete arm two-stage even three grades stretch, when this kind of telescopic oil cylinder manufactures, need be empty by piston bar drill, oil cylinder manufacture is very difficult, limit by finish size simultaneously, oil cylinder stroke is less, can not realize remote flexible, moreover this kind of single-stage telescopic oil cylinder is when installing, each piston rod needs attachment point, telescopic oil cylinder by endogenetic process, oil cylinder stability and leak tightness poor, when hoisting crane needs multi-stage expansion, employing single-stage oil cylinder stretch mode cannot realize especially.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of multi-stage oil cylinder retractor device and the installation method on telehoist thereof, it can solve the telescopic oil cylinder stability of existing ship telehoist and leak tightness poor, maintenance and change inconvenient, problem efficiently.
In order to solve the problem, the technical solution adopted in the present invention is: this multi-stage oil cylinder retractor device, includes telescopic oil cylinder, and described telescopic oil cylinder is at least two, is connected by hydraulic pipe.
In the technical scheme of above-mentioned multi-stage oil cylinder retractor device, technical scheme can also be more specifically: described telescopic oil cylinder is provided with four hydraulic fluid ports, four described hydraulic fluid ports be respectively be located at described telescopic oil cylinder cylinder body two ends stretch out hydraulic fluid port and retraction hydraulic fluid port, the rodless cavity hydraulic fluid port being located at described telescopic oil cylinder piston rod external part and rod chamber hydraulic fluid port; The described rodless cavity hydraulic fluid port of telescopic oil cylinder described in upper class by described hydraulic pipe with stretch out hydraulic fluid port described in telescopic oil cylinder described in next stage and be connected, the described rod chamber hydraulic fluid port of telescopic oil cylinder described in upper class is connected with the described retraction hydraulic fluid port of telescopic oil cylinder described in next stage.
The installation method of above-mentioned multi-stage oil cylinder retractor device on telehoist is: adopt three described telescopic oil cylinders of connecting, the cylinder body of telescopic oil cylinder described in the first order is arranged on the fixed arm of hoisting crane by cylinder support, and the piston rod of described first order telescopic oil cylinder is arranged on the first order telescopic boom of hoisting crane by bearing pin; The cylinder body of telescopic oil cylinder described in the second stage is arranged on first order telescopic boom by cylinder support, and its piston rod is arranged on the telescopic boom of the second stage by bearing pin; The cylinder body of telescopic oil cylinder described in the third stage is arranged on the telescopic boom of the second stage by cylinder support, and its piston rod is arranged on third stage telescopic boom by bearing pin.
Further, described cylinder support is U-type groove body.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, the telescopic oil cylinder owing to adopting is serial oil cylinders, and oil cylinder is easy to manufacture, and productive costs is low, stability and good airproof performance;
2, multiple series connection telescopic oil cylinder is fixed on respectively the relevant position of hoisting crane multistage telescopic arm, achieves the multi-stage expansion of marine telescope crane arm, hoisting arm expansion stroke is larger;
3, because every grade of scalable arm flexiblely controls by independent telescopic oil cylinder, when pinpointing the problems, to the maintenance of oil cylinder with change convenient, fast.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is the oil cylinder retraction schematic diagrams at different levels of embodiments of the invention.
Fig. 4 is the hydraulic schematic diagram of embodiments of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Multi-stage oil cylinder retractor device as shown in Figures 1 to 4, comprise at least two telescopic oil cylinders, and connected by hydraulic pipe, multiple series connection telescopic oil cylinder is fixed on crane arm, crane arm and pedestal 9 hinged, each telescopic oil cylinder is equipped with four hydraulic fluid ports, be respectively be located at cylinder block two ends stretch out hydraulic fluid port and retraction hydraulic fluid port, the rodless cavity hydraulic fluid port being located at cylinder piston rod external part and rod chamber hydraulic fluid port; The rodless cavity hydraulic fluid port of upper class telescopic oil cylinder is connected with the hydraulic fluid port that stretches out of next stage telescopic oil cylinder by hydraulic pipe, and the rod chamber hydraulic fluid port of upper class telescopic oil cylinder is connected with the retraction hydraulic fluid port of next stage telescopic oil cylinder; In the present embodiment, as shown in Figure 1, crane arm comprises the first telescopic boom 3 be inserted in fixed arm 10, is inserted into the second telescopic boom 4 in the first telescopic boom 3, the 3rd telescopic boom 5 be inserted in the second telescopic boom 4, is also provided with the oil cylinder 8 for adjusting crane arm angle between fixed arm 10 and pedestal 9; The telescopic oil cylinder of above-mentioned series connection comprises a pair first order telescopic oil cylinder 1 be fixed on fixed arm 10, the second stage telescopic oil cylinder 2 be fixed on the first telescopic boom 3, the third stage telescopic oil cylinder 3 be fixed on the second telescopic boom 4; As shown in Figure 2, Figure 4 shows, the telescopic oil cylinder of thtee-stage shiplock is arranged on the method on telehoist: fixedly mounted by the cylinder support 6 that the cylinder body of a pair first order telescopic oil cylinder 1 is provided with respectively by fixed arm 10 liang of outsides, its piston rod 1-1 is fixed on the piston rod bearing be located at outside first order telescopic boom 3 external part by bearing pin 7; The cylinder body of second stage telescopic oil cylinder 2 is fixedly mounted by the cylinder support 6 being located at first order telescopic boom 3 external part, its piston rod 2-1 be fixed on by bearing pin 7 be located at the second telescopic boom 4 external part piston rod bearing on; The cylinder body of third stage telescopic oil cylinder 3 is fixedly mounted by the cylinder support 6 being located at second stage telescopic boom 4 external part, its piston rod 3-1 be fixed on by bearing pin 7 be located at the 3rd telescopic boom 5 external part piston rod bearing on; This cylinder support 6 is U-type groove body; As shown in Figure 4, the rodless cavity hydraulic fluid port C of the piston rod external part of first order telescopic oil cylinder 1 is connected with the hydraulic fluid port A that stretches out of second stage telescopic oil cylinder 2 by hydraulic pipe, the rod chamber hydraulic fluid port D of the piston rod external part of first order telescopic oil cylinder 1 is connected with the retraction hydraulic fluid port B of second stage telescopic oil cylinder 2 by hydraulic pipe, the rodless cavity hydraulic fluid port C of the piston rod external part of second stage telescopic oil cylinder 2 is connected with the hydraulic fluid port A that stretches out of third stage telescopic oil cylinder 3 by hydraulic pipe, and the rod chamber hydraulic fluid port D of the piston rod external part of second stage telescopic oil cylinder 2 is connected with the retraction hydraulic fluid port B of third stage telescopic oil cylinder 3; Because the piston rod 1-1 of first order telescopic oil cylinder 1 and the cylinder body of second stage telescopic oil cylinder 2 are all fixedly mounted on first order telescopic boom 3, can move with the flexible of first order telescopic boom 3, but both geo-stationary; The piston rod 2-1 of second stage telescopic oil cylinder 2 and the cylinder body of third stage telescopic oil cylinder 3 are all fixedly mounted on the second telescopic boom 4, can move with the flexible of the second telescopic boom 4, but both geo-stationary, as shown in Figure 2, by the connection mode of above-mentioned telescopic oil cylinder, more multi-expansion oil cylinder can be cascaded, form more multi-stage oil cylinder retractor device.
As Fig. 2, Fig. 3, principle of work shown in Fig. 4: extend action: what system liquid force feed entered first order telescopic oil cylinder 1 through balance cock stretches out hydraulic fluid port A, the piston rod 1-1 of first order telescopic oil cylinder 1 stretches out, what then hydraulic oil entered second stage telescopic oil cylinder 2 through the rodless cavity hydraulic fluid port C of first order telescopic oil cylinder 1 stretches out hydraulic fluid port A, the piston rod 2-1 of second stage telescopic oil cylinder 2 stretches out, what then hydraulic oil entered third stage telescopic oil cylinder 3 through the retraction hydraulic fluid port B of the second telescopic oil cylinder 2 stretches out hydraulic fluid port A, the piston rod 3-1 of third stage telescopic oil cylinder 3 stretches out, by that analogy, numerous series connection telescopic oil cylinder is stretched out, as shown in Figure 2, retracting action: system liquid force feed enters the rod chamber hydraulic fluid port D of first order telescopic oil cylinder 1 through balance cock, the piston rod 1-1 of first order telescopic oil cylinder 1 bounces back, then hydraulic oil enters the retraction hydraulic fluid port B of second stage telescopic oil cylinder 2 through the rod chamber hydraulic fluid port D of first order telescopic oil cylinder 1, the piston rod 2-1 of second stage telescopic oil cylinder 2 bounces back, then hydraulic oil enters the retraction hydraulic fluid port B of third stage telescopic oil cylinder 3 through the rod chamber hydraulic fluid port D of the second telescopic oil cylinder 2, third stage telescopic oil cylinder 3 bounces back, by that analogy, by numerous series connection telescopic oil cylinder retraction, as shown in Figure 3.
Adopt the present invention can realize the multi-stage expansion of marine telescope crane arm, flexible stroke is larger, because oil cylinder is serial oil cylinders, easy to manufacture, cost is low, oil cylinder stability and sealing property better, be convenient to maintenance and change.
Claims (4)
1. a multi-stage oil cylinder retractor device, includes telescopic oil cylinder, it is characterized in that: described telescopic oil cylinder is at least two, is connected by hydraulic pipe.
2. multi-stage oil cylinder retractor device according to claim 1, it is characterized in that: described telescopic oil cylinder is provided with four hydraulic fluid ports, four described hydraulic fluid ports be respectively be located at described telescopic oil cylinder cylinder body two ends stretch out hydraulic fluid port and retraction hydraulic fluid port, the rodless cavity hydraulic fluid port being located at described telescopic oil cylinder piston rod external part and rod chamber hydraulic fluid port; The described rodless cavity hydraulic fluid port of telescopic oil cylinder described in upper class by described hydraulic pipe with stretch out hydraulic fluid port described in telescopic oil cylinder described in next stage and be connected, the described rod chamber hydraulic fluid port of telescopic oil cylinder described in upper class is connected with the described retraction hydraulic fluid port of telescopic oil cylinder described in next stage.
3. the installation method of a multi-stage oil cylinder retractor device as claimed in claim 1 or 2 on telehoist, it is characterized in that: adopt three described telescopic oil cylinders of connecting, the cylinder body of telescopic oil cylinder described in the first order is arranged on the fixed arm of hoisting crane by cylinder support, and the piston rod of described first order telescopic oil cylinder is arranged on the first order telescopic boom of hoisting crane by bearing pin; The cylinder body of telescopic oil cylinder described in the second stage is arranged on first order telescopic boom by cylinder support, and its piston rod is arranged on the telescopic boom of the second stage by bearing pin; The cylinder body of telescopic oil cylinder described in the third stage is arranged on the telescopic boom of the second stage by cylinder support, and its piston rod is arranged on third stage telescopic boom by bearing pin.
4. the installation method of multi-stage oil cylinder retractor device according to claim 3 on telehoist, is characterized in that: described cylinder support is U-type groove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510015822.1A CN104477795A (en) | 2015-01-13 | 2015-01-13 | Multi-stage oil cylinder telescopic device and method for installing multi-state oil cylinder telescopic device on telescopic crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510015822.1A CN104477795A (en) | 2015-01-13 | 2015-01-13 | Multi-stage oil cylinder telescopic device and method for installing multi-state oil cylinder telescopic device on telescopic crane |
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| CN201510015822.1A Pending CN104477795A (en) | 2015-01-13 | 2015-01-13 | Multi-stage oil cylinder telescopic device and method for installing multi-state oil cylinder telescopic device on telescopic crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744382A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | A kind of multistage telescopic arm isolated pillar crane |
| CN106744383A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | A kind of hydraulic gyration crane with support |
| CN108716495A (en) * | 2018-07-10 | 2018-10-30 | 蚌埠市行星工程机械有限公司 | The built-in oil duct hydraulic cylinder group series connection asynchronous propulsion system of fitted outside |
| CN110606438A (en) * | 2019-10-15 | 2019-12-24 | 湖北江威智能汽车股份有限公司 | Detachable rotary crane |
| CN113798844A (en) * | 2021-08-31 | 2021-12-17 | 郑煤机智鼎液压有限公司 | Assembling method of multi-stage oil cylinder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744382A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | A kind of multistage telescopic arm isolated pillar crane |
| CN106744383A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | A kind of hydraulic gyration crane with support |
| CN108716495A (en) * | 2018-07-10 | 2018-10-30 | 蚌埠市行星工程机械有限公司 | The built-in oil duct hydraulic cylinder group series connection asynchronous propulsion system of fitted outside |
| CN108716495B (en) * | 2018-07-10 | 2024-03-29 | 蚌埠市行星工程机械有限公司 | Built-in oil duct hydraulic cylinder group series external asynchronous propulsion system |
| CN110606438A (en) * | 2019-10-15 | 2019-12-24 | 湖北江威智能汽车股份有限公司 | Detachable rotary crane |
| CN113798844A (en) * | 2021-08-31 | 2021-12-17 | 郑煤机智鼎液压有限公司 | Assembling method of multi-stage oil cylinder |
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Application publication date: 20150401 |