CN201128661Y - Gantry crane lifting device with oil cylinder base anti-dropping mechanism - Google Patents
Gantry crane lifting device with oil cylinder base anti-dropping mechanism Download PDFInfo
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- CN201128661Y CN201128661Y CNU2007201135919U CN200720113591U CN201128661Y CN 201128661 Y CN201128661 Y CN 201128661Y CN U2007201135919 U CNU2007201135919 U CN U2007201135919U CN 200720113591 U CN200720113591 U CN 200720113591U CN 201128661 Y CN201128661 Y CN 201128661Y
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- strong magnet
- oil cylinder
- cylinder
- jacking
- piston rod
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Abstract
The utility model relates to an assistant apparatus for operating a portal jib crane, in particular relating to a jacking device of a portal jib crane provided with an oil cylinder base anti-falling mechanism; the jacking device of the portal jib crane provided with the oil cylinder base anti-falling mechanism includes an oil cylinder base, a jacking oil cylinder, a piston rod in the jacking oil cylinder, a sealing piece between the piston rod and the jacking oil cylinder, a lower hydraulic oil inlet, a piston, a sealing piece between the piston and the jacking oil cylinder and an upper hydraulic oil inlet. The utility model is characterized in that a magnetic anti-falling mechanism is arranged between the bottom part of the shell of the jacking oil cylinder and the bottom part of the piston rod; the magnetic anti-falling mechanism includes a strong magnet, a strong magnet bracket and a fixing apparatus. The upper end of the magnetic anti-falling mechanism of the utility model sucks the bottom part of the shell of the oil cylinder by a permanent magnet; the lower end blocks the oil cylinder base by the magnet bracket; as the magnetic suction of the permanent magnet, the oil cylinder base and the piston rod can not fall, the utility model solve the falling difficulty of the oil cylinder piston and the oil cylinder base.
Description
Technical field
The utility model relates to the auxiliary implement that is mainly used in the rubber tyred gantry crane transition in the pier storage yard industry.Specifically, be a kind of portal crane jacking apparatus that the cylinder pedestal safety dropping prevent mechanism is installed,
Background technology
Now, jacking apparatus has been widely used in the cart steering swivel system of rubber tyred gantry crane.The installation of jacking apparatus makes gauntry crane utilize the elongation of the jacking cylinder piston rod of 4 jacking apparatus when turning to, and with whole equipment jack-up, its tire is freely turned under stress-free situation.Reduce tire and ground-surface friction like this, reduced the Tyte Wear degree, prolonged the service life of tire, reduced the cost input, and, many corresponding trouble points reduced, for the gauntry crane production operation has brought very big convenience.But cylinder seal spare all can wear and tear after using a period of time, and then causes the oil cylinder internal leakage.During the gauntry crane normal operation, jacking cylinder piston rod and base (heavily about 130KG) rest on the limes superiors position under the effect of oil cylinder lower oil cavitie up to the quiet oil pressure of 200BAR.If cylinder seal spare may wear to a certain degree, the internal leakage meeting of oil cylinder progressively descends the oil pressure of oil cylinder, reduces to when being not enough to overcome the weight of piston rod and base when the quiet oil pressure of oil cylinder lower oil cavitie, and oil cylinder piston bar and base can fall downwards.When the gauntry crane normal operation, said circumstances takes place can cause the car load akinesia.Simultaneously, during the tenesmus of oil cylinder piston bar and base, the sealing member on piston and the piston rod makes the sealing part abrasion aggravation with the relative friction between oil cylinder inner wall.The frequent generation of oil cylinder piston and base tenesmus certainly will cause more quick-wearing of sealing member.The more quick-wearing of sealing member makes the aggravation of oil cylinder internal leakage again.This has just formed vicious circle.According to statistics, this fault frequency is higher, every monthly 3-4 time, can reach 6-7 time in every month when weather is hot, very big to the operating efficiency influence.In addition, fault just needs the frequent starting Hydraulic Pump to the repairing of oil cylinder lower oil cavitie after occurring, and the result's Hydraulic Pump that brings and the service life of valve member also shorten thereupon.When the jacking cylinder normal running, it is normal that piston up and down in oil cylinder causes the normal wear of sealing member.Key is when the gauntry crane normal operation, how to make the oil cylinder piston bar of the 130KG that weighs and base rest on the limes superiors position under the effect of oil cylinder lower oil cavitie up to the quiet oil pressure of 200BAR, avoids the tenesmus of oil cylinder piston and base.Because piston rod and base tenesmus not only can cause the unnecessary wearing and tearing of sealing member, and can cause whole gauntry crane et out of order.So, when jacking cylinder is not worked, how to prevent the problem that oil cylinder piston bar and cylinder pedestal have dropped and need solve into insider and scientific and technical personnel.
Summary of the invention
The purpose of the utility model is to disclose a kind of simple in structurely, with low cost to society, makes, easy for installation the portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism that finished product can be for convenience detach.
It is such that the utility model solves the technical scheme that above technical matters takes:
A kind of portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism, comprise, cylinder pedestal, jacking cylinder, bottom and cylinder pedestal are fixed together and penetrate the piston rod of jacking cylinder, the sealing member between piston rod and the jacking cylinder, bottom hydraulic oil inlet port, piston, the sealing member between piston and the jacking cylinder, top hydraulic oil inlet port; It is characterized in that, the magnetic force safety dropping prevent mechanism of a cylinder pedestal is set between jacking cylinder outer casing bottom and the piston rod bottom.
Described magnetic force safety dropping prevent mechanism comprises strong magnet, strong magnet support and the connecting element that strong magnet and strong magnet support are fixed together.
Described strong magnet support is disc, and there is circular hole in disc central authorities, and disc strong magnet support circular hole just in time is stuck in the groove of underpart of the piston rod.
The described disc strong magnet support that is is spliced by two half moon derbies, and two cooresponding splicing block places are combined after fixing by screw, nut, and the medium pore of the strong magnet support after fixing just in time is stuck in the groove of underpart of the piston rod.
The connecting element that described strong magnet and strong magnet support are fixed together is a check screw, and check screw is fixed on strong magnet on the strong magnet support, and end face is just in time inhaled on the lower surface of jacking cylinder outer casing bottom on the strong magnet after fixing.
Owing to taked above-mentioned technical measures, compared with prior art its advantage is:
The utility model is provided with the magnetic force safety dropping prevent mechanism of a cylinder pedestal between jacking cylinder outer casing bottom and piston rod bottom, magnet in the magnetic force safety dropping prevent mechanism upwards can hold the jacking cylinder outer casing bottom, magnet holder has tangled oil cylinder piston bar bottom again, and the piston rod bottom links with cylinder pedestal, so can not make the tenesmus of jacking cylinder base and piston rod, avoid fault.Also avoid the unnecessary wearing and tearing of piston and piston rod back seal spare, thereby prolonged the service life of sealing member.
Avoiding of piston and piston rod tenesmus phenomenon makes hydraulic oil pump open number of times and the opening time reduces, and prolonged the service life of hydraulic oil pump, hydraulic electric motor and hydraulic valve piece.
The avoiding of piston and piston rod tenesmus phenomenon also created condition for omitting check valve in the hydraulic efficiency pressure system, thereby saved investment for equipment.
The utility model installs cylinder pedestal magnetic force safety dropping prevent mechanism additional fully on former gauntry crane jacking apparatus basis, the repacking to existing equipment is convenient in this kind design especially.
Description of drawings
Fig. 1 is provided with the portal crane jacking apparatus integral structure scheme drawing (semi-sictional view) of cylinder pedestal safety dropping prevent mechanism for the utility model;
Fig. 2 is the structural representation that the utility model cylinder pedestal safety dropping prevent mechanism combines with piston base; Piston base is numbered 2 among the figure;
Fig. 3 is the utility model cylinder pedestal safety dropping prevent mechanism front view;
Fig. 4 is the utility model cylinder pedestal safety dropping prevent mechanism birds-eye view;
Fig. 5 is the structural representation (the piston base structure when the cylinder pedestal safety dropping prevent mechanism is not installed) of former piston base.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
A kind of portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism, comprise, cylinder pedestal 1 (Fig. 1), jacking cylinder 9, bottom and cylinder pedestal 1 are fixed together and penetrate the piston rod 8 of jacking cylinder 9, the sealing member 6 between piston rod 8 and the jacking cylinder 9, bottom hydraulic oil inlet port 7, piston 11, the sealing member 10 between piston 11 and the jacking cylinder 9, top hydraulic oil inlet port 13; It is characterized in that, the magnetic force safety dropping prevent mechanism of a cylinder pedestal is set between jacking cylinder outer casing bottom 5 and piston rod 8 bottoms.
Described magnetic force safety dropping prevent mechanism comprises strong magnet 4, strong magnet support 3 and the connecting element that strong magnet and strong magnet support are fixed together.
Described strong magnet support 3 is disc, and there is circular hole 31 in disc central authorities, and disc strong magnet support 3 circular holes just in time are stuck in the groove 81 of underpart of the piston rod.
The described disc strong magnet support 3 that is is by two half moon derbies be spliced (Fig. 3,4), two cooresponding splicing block places are combined after fixing by screw 32, nut 33, and the medium pore of the strong magnet support 3 after fixing just in time is stuck in the groove 81 of underpart of the piston rod.
The connecting element that described strong magnet 4 and strong magnet support 3 are fixed together is check screw 41 (two), check screw 41 is fixed on strong magnet 4 on the strong magnet support 3, and end face is just in time inhaled on the lower surface of jacking cylinder outer casing bottom 5 on the strong magnet 4 after fixing.
The utility model principle:
When Hydraulic Pump with hydraulic oil when last hydraulic oil inlet 13 is pressed into oil cylinder top, the oil pressure of 200BAR with piston 11 toward pressing down (can produce the thrust about 40000KG), because of cylinder pedestal withstands on the ground, so jacking cylinder 9 have to be with jacking carrier base 12 jack-up.Such four jacking cylinders are worked together, portal crane jack-up that could about 200000Kg is heavy.Turn to finish after, hydraulic oil pushes back the limes superiors position with piston, piston rod and base when down hydraulic oil inlet 9 is pressed into the oil cylinder bottom, the HM Hydraulic Motor outage quits work.Under the effect of hydraulic control one-way valve, oil cylinder lower oil cavitie hydraulic oil still keeps the quiet oil pressure of original 200BAR, thereby makes piston rod and base rest on the limes superiors position.At this moment, if sealing member is oil tight, oil cylinder piston and cylinder pedestal can rest on the limes superiors position, if the sealing member leakage of oil, and when the oil pressure of oil cylinder bottom during less than piston and cylinder pedestal gravity, piston and cylinder pedestal promptly drop (present circumstances).The utility model is held the cylinder shell bottom by permanent magnet with magnetic force safety dropping prevent mechanism upper end; Cylinder pedestal is blocked by magnet holder in the lower end, because the magnetic attraction of permanent magnet makes cylinder pedestal and the piston rod that is fixed on above the cylinder pedestal can not fall, has solved the difficult problem of oil cylinder piston bar and base tenesmus.
The magnetic attraction of magnetic force safety dropping prevent mechanism is a bit larger tham the gravity (130KG) of base and whole piston rod, so, when hydraulic pressure with piston and piston rod when pressing down, after magnet overcomes the gravity of oil cylinder piston bar and base, resistance not enough 130KG far away, at the beginning of starting, the downward thrust of oil cylinder piston was not 40000KG when base landed, and can easily make magnet and cylinder shell bottom separately.Therefore the magnetic force anti-fall device does not have any negative effect to the regular event of former jacking apparatus.
Claims (5)
1, a kind of portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism, comprise, cylinder pedestal (1), jacking cylinder (9), bottom and cylinder pedestal (1) are fixed together and penetrate the piston rod (8) of jacking cylinder (9), the sealing member (6) between piston rod (8) and the jacking cylinder (9), bottom hydraulic oil inlet port (7), piston (11), the sealing member (10) between piston (11) and the jacking cylinder (9), top hydraulic oil inlet port (13); It is characterized in that, the magnetic force safety dropping prevent mechanism of a cylinder pedestal is set between jacking cylinder outer casing bottom (5) and piston rod (8) bottom.
2, the portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism according to claim 1, it is characterized in that, described magnetic force safety dropping prevent mechanism comprises, strong magnet (4), strong magnet support (3) and the connecting element that strong magnet and strong magnet support are fixed together.
3, the portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism according to claim 2, it is characterized in that, described strong magnet support (3) is disc, there is circular hole (31) in disc central authorities, and disc strong magnet support (3) circular hole just in time is stuck in the groove (81) of underpart of the piston rod.
4, the portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism according to claim 3, it is characterized in that, the described disc strong magnet support (3) that is is spliced by two half moon derbies, two cooresponding splicing block places are combined after fixing by screw (32), nut (33), and the medium pore of the strong magnet support (3) after fixing just in time is stuck in the groove (81) of underpart of the piston rod.
5, the portal crane jacking apparatus that is provided with the cylinder pedestal safety dropping prevent mechanism according to claim 2, it is characterized in that, the connecting element that described strong magnet (4) and strong magnet support (3) are fixed together is check screw (41), check screw (41) is fixed on strong magnet (4) on the strong magnet support (3), and end face is just in time inhaled on the lower surface of jacking cylinder outer casing bottom (5) on the strong magnet (4) after fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201135919U CN201128661Y (en) | 2007-08-22 | 2007-08-22 | Gantry crane lifting device with oil cylinder base anti-dropping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201135919U CN201128661Y (en) | 2007-08-22 | 2007-08-22 | Gantry crane lifting device with oil cylinder base anti-dropping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201128661Y true CN201128661Y (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201135919U Expired - Lifetime CN201128661Y (en) | 2007-08-22 | 2007-08-22 | Gantry crane lifting device with oil cylinder base anti-dropping mechanism |
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| CN (1) | CN201128661Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2457171C2 (en) * | 2010-10-19 | 2012-07-27 | Государственное образовательное учреждение высшего профессионального образования Московский автомобильно-дорожный государственный технический университет (МАДИ) | Adjustable jack |
| CN104444868A (en) * | 2014-11-27 | 2015-03-25 | 天津港太平洋国际集装箱码头有限公司 | Anti-falling device for jacking oil cylinder of rubber-tired crane |
| CN107188083A (en) * | 2017-06-29 | 2017-09-22 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of lifting machine and its method of work with fall-preventing protection device |
| CN107324237A (en) * | 2017-07-24 | 2017-11-07 | 赤湾集装箱码头有限公司 | Field bridge cart jacking cylinder mechanical anti-falling device |
| CN107381431A (en) * | 2017-06-29 | 2017-11-24 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of method of work of the lifting machine with dual anti-falling protection function |
| CN110562882A (en) * | 2019-09-10 | 2019-12-13 | 福建工程学院 | AGV trolley adopting electromagnetic hydraulic jacking |
| CN114873513A (en) * | 2022-05-07 | 2022-08-09 | 株洲时代电子技术有限公司 | Gantry crane rotation fixing operation method |
| CN116789025A (en) * | 2022-03-12 | 2023-09-22 | 丁安琦 | Multistage piston hydraulic tension oil cylinder |
-
2007
- 2007-08-22 CN CNU2007201135919U patent/CN201128661Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2457171C2 (en) * | 2010-10-19 | 2012-07-27 | Государственное образовательное учреждение высшего профессионального образования Московский автомобильно-дорожный государственный технический университет (МАДИ) | Adjustable jack |
| CN104444868A (en) * | 2014-11-27 | 2015-03-25 | 天津港太平洋国际集装箱码头有限公司 | Anti-falling device for jacking oil cylinder of rubber-tired crane |
| CN104444868B (en) * | 2014-11-27 | 2016-11-30 | 天津港太平洋国际集装箱码头有限公司 | A kind of rubber tired crane jacking cylinder falling proof device |
| CN107188083A (en) * | 2017-06-29 | 2017-09-22 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of lifting machine and its method of work with fall-preventing protection device |
| CN107381431A (en) * | 2017-06-29 | 2017-11-24 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of method of work of the lifting machine with dual anti-falling protection function |
| CN107324237A (en) * | 2017-07-24 | 2017-11-07 | 赤湾集装箱码头有限公司 | Field bridge cart jacking cylinder mechanical anti-falling device |
| CN110562882A (en) * | 2019-09-10 | 2019-12-13 | 福建工程学院 | AGV trolley adopting electromagnetic hydraulic jacking |
| CN110562882B (en) * | 2019-09-10 | 2024-04-16 | 福建工程学院 | AGV trolley adopting electromagnetic hydraulic jacking |
| CN116789025A (en) * | 2022-03-12 | 2023-09-22 | 丁安琦 | Multistage piston hydraulic tension oil cylinder |
| CN114873513A (en) * | 2022-05-07 | 2022-08-09 | 株洲时代电子技术有限公司 | Gantry crane rotation fixing operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |
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| CX01 | Expiry of patent term |