CN203766424U - Retracting-protecting mechanism for rear vehicle wheels of amphibious ship - Google Patents
Retracting-protecting mechanism for rear vehicle wheels of amphibious ship Download PDFInfo
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- CN203766424U CN203766424U CN201420191617.1U CN201420191617U CN203766424U CN 203766424 U CN203766424 U CN 203766424U CN 201420191617 U CN201420191617 U CN 201420191617U CN 203766424 U CN203766424 U CN 203766424U
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- hydraulic
- guard box
- wheel
- protecting
- actuating cylinder
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Abstract
The utility model relates to a retracting-protecting mechanism for rear vehicle wheels of an amphibious ship. According to the retracting-protecting mechanism, the rear vehicle wheels can be folded and retracted during driving in water and can be sealed by virtue of protecting covers; actions of the protecting covers and the rear vehicle wheels are realized through the expansion and contraction of protecting tank hydraulic cylinders and rear support leg hydraulic cylinders, and the sequential actions of the protecting tank hydraulic cylinders and the rear support leg hydraulic cylinders are realized by virtue of a pressure control type sequential action loop. The retracting-protecting mechanism comprises protecting tanks on two sides of the rear part of a ship body, and the bottoms of the protecting tanks are higher than the bottom of the ship body; each protecting tank is provided with an openable-closable protecting cover, the contact joint between each protecting tank and the corresponding protecting cover is sealed; rear wheel hydraulic lifting devices are arranged in the protecting tanks, and rear wheels are mounted on the rear wheel hydraulic lifting devices; meanwhile, the protecting covers are connected with a hydraulic opening-closing device; the rear wheel hydraulic lifting devices and the hydraulic opening-closing device are connected with a hydraulic control device, and the hydraulic control device is used for controlling the lifting actions of the rear wheels and the protecting covers in a sequential control manner.
Description
Technical field:
The utility model relates to a kind of rear wheel of amphibious ship and packs up protection mechanism.
Background technology:
There is at present the amphibious ship of various ways, but have a common problem, the laying and sealing problem of wheel while driving in water exactly, this directly has influence on the resistance to motion of amphibian vehicle in water and the extent of corrosion of wheel mechanism.Through retrieval, when current amphibious ship travels in water, wheel can be summarized as two states.The one, while driving in water, wheel is not packed up, and the 2nd, fold and upwards pack up, do not protect sealing arrangement.
Utility model patent: State Intellectual Property Office's Granted publication on November 4th, 2009, application number is 200820030099.X, name is called a kind of utility model patent of amph, and its land driver train comprises car body, engine installation, transmission shaft and back axle, wheel and steering hardware.While driving in water, wheel can not upwards be packed up, if amphibian vehicle is in the operation of water high speed, can produces very large resistance, and in water, very easily tangle other thing, twines in car, and the possibility that causes engine installation and driving device to damage, affects ship rideability.
The amphibious ship of sealegs company development in every respect performance improves a lot, and its scheme adopting is: front, the both sides, rear of hull are respectively equipped with hull support, are provided with wheel stand on wheel.Wheel stand and hull support are hinged; Hull support and hydraulic actuating cylinder are hinged; Hydraulic actuating cylinder is hinged with wheel stand again.Hydraulic efficiency gear mainly comprises hydraulic electric motor pump, directional control valve and hydraulic actuating cylinder.The lifting of wheel is to realize by the telescopic band motor car wheel support lifting of hydraulic actuating cylinder.Save like this space and cost, reliable and stable again, land and water strong adaptability.But when ship is in the time that water high speed is travelled, front fore can lift, and trailing wheel is almost fully immersed in water, when increasing resistance, can accelerate again the abrasion and corrosion of wheel mechanical component.
Utility model patent: State Intellectual Property Office's Granted publication on July 18th, 2012, application number is 201210055539.8, name is called the utility model patent of land and water 4 wheel driven amphibious vehicle.Although wheel is also can lifting, lacks protection sealing arrangement, in water, fast running can produce very large resistance, ducks in drink for a long time and can accelerate undoubtedly the abrasion and corrosion of wheel mechanical component.
Utility model content:
In order to address the above problem, the rear wheel that the utility model proposes a kind of amphibious ship is packed up protection mechanism.Can realize while driving that rear wheel is folding to be packed up in water, and be sealed by over cap.The action of over cap and rear wheel is by the flexible realization of guard box hydraulic actuating cylinder and rear support leg hydraulic actuating cylinder, and the realization of guard box hydraulic actuating cylinder and rear support leg hydraulic actuating cylinder sequentially-operating is by a kind of pressure control type sequentially-operating loop.
For achieving the above object, the utility model adopts following technical scheme:
The rear wheel of amphibious ship is packed up a protection mechanism, and it comprises:
Guard box, guard box is arranged on afterbody both sides, and the bottom of guard box will be higher than hull bottom;
Guard box is provided with an able to turn on or off over cap, their contact position sealing;
In guard box, be provided with trailing wheel hydraulic lift, trailing wheel is mounted thereto;
Over cap is also connected with hydraulic opening-closing device simultaneously;
Trailing wheel hydraulic lift is all connected with hydraulic control device with hydraulic opening-closing device, and hydraulic control device adopts the lifting action of sequence control mode control trailing wheel and the switching of over cap.
Described two trailing wheel hydraulic lift structures are identical, include rear support leg hydraulic actuating cylinder, and it is connected with hull rack pin shaft, and rear support leg hydraulic actuating cylinder is also connected with wheel stand bearing pin simultaneously, and trailing wheel is installed on wheel stand, and rear support leg hydraulic actuating cylinder is connected with hydraulic control device.
Described hydraulic opening-closing device comprises the guard box hydraulic actuating cylinder being connected with over cap, and guard box hydraulic actuating cylinder is connected with the rack pin shaft of guard box, and guard box hydraulic actuating cylinder is connected with hydraulic control device.
Between described guard box and over cap, be connected through the hinge.
Described guard box and over cap contact position are provided with guard box sealing band, and guard box sealing band is placed in the fluting of guard box and is connected with guard box by water proof glue.
Described hydraulic control device comprises hydraulic electric motor pump; it is connected with fuel tank; hydraulic electric motor pump is connected with trailing wheel change-over valve by oil circuit, and trailing wheel change-over valve is connected with two sequence valves respectively, and each sequence valve is connected with corresponding rear support leg hydraulic actuating cylinder and guard box hydraulic actuating cylinder.
On described each landing leg hydraulic cylinder, be respectively equipped with hydraulic lock separately, hydraulic lock is made up of two hydraulic control one-way valves, locking in the time that landing leg hydraulic cylinder does not move.
Described hydraulic electric motor pump is connected with fuel tank by magnetic core filter.
Described hydraulic electric motor pump oil circuit is provided with by pass valve, and described hydraulic electric motor pump oil circuit is provided with compression indicator.
Described guard box is designed to the ramp shaped that prevents that dead point from producing.
The lifting mechanism of the each wheel of this amphibious ship, comprises wheel stand, hull support, landing leg hydraulic cylinder.In the time that amphibian vehicle travels in water, can be by each wheel folding liftable by the flexible of each landing leg hydraulic cylinder.
Protection mechanism after this amphibious ship trailing wheel is packed up, comprises over cap, guard box, guard box sealing band, guard box hydraulic actuating cylinder.In the time that amphibian vehicle travels in water, after rear wheel folds and packs up, the piston of guard box hydraulic actuating cylinder is return, and over cap is detained, and under the effect of guard box sealing band, combines closely with guard box.
Hydraulic circuit of the present utility model has adopted a kind of pressure control type sequentially-operating loop, and the fluid that in system, hydraulic electric motor pump draws from fuel tank, by the power element that is transported to of magnetic core filter, trailing wheel hand change over valve, the series connection of front-wheel hand change over valve.By pass valve is used for preventing system overload, and compression indicator is monitored its pressure.Front-wheel hydraulic lock, left back wheel hydraulic lock and right rear wheel hydraulic lock are made up of two hydraulic control one-way valves in fact, and it can lock in the time that landing leg hydraulic cylinder does not move.The sequentially-operating of left back landing leg hydraulic cylinder and left back wheel guard box hydraulic actuating cylinder, right back landing leg hydraulic cylinder and right rear wheel guard box hydraulic actuating cylinder is realized by pressure control type sequentially-operating loop.
The beneficial effects of the utility model:
When this amphibious ship travels in water, beneficial effect has 3 points.One, rises folding wheel, has saved space, has reduced wheel and in water, has been wound around the possibility of other things, and effectively reduced the resistance of water.They are two years old; the utility model has increased a set of rear wheel protection sealing mechanism; hull after sealing makes rear wheel be isolated from seawater completely under the effect of guard box sealing band; as there is no rear wheel; as common yacht, in water, navigate by water, solved while driving in current amphibious ship water the wheel problem that has not only increased resistance but also increased abrasion and corrosion of ducking in drink.They are three years old; hydraulic circuit of the present utility model has adopted pressure control type sequentially-operating loop; make guard box hydraulic actuating cylinder and rear support leg hydraulic actuating cylinder can pass through a trailing wheel hand change over valve sequentially-operating; avoid the possibility of multiple valve control maloperations; and power element is hydraulic actuating cylinder, can in the environment of sea humidity, work safely and effectively.
Brief description of the drawings:
Fig. 1 is integral structure schematic diagram of the present utility model;
Fig. 2 is hydraulic schematic diagram of the present utility model;
Fig. 3 is the utility model wheel structural representation while falling;
Structural representation (axonometric drawing) when Fig. 4 is the rise of the utility model wheel;
Fig. 4 a is the utility model structural analysis figure (front elevation);
Structural representation (right elevation) when Fig. 4 b is the rise of the utility model wheel;
Schematic diagram when Fig. 5 is the utility model protection mechanism closure;
Fig. 6 is the isometric cutaway view of the utility model guard box sealing band;
Fig. 7 is the constructional drawing of the utility model hinge;
Fig. 8 is the structure cutaway view of the utility model bearing pin.
Wherein 1-guard box, 2-guard box sealing band, 3-trailing wheel, 4-over cap, 5-hull, 6-seat, 7-selector bar, 8-trailing wheel hand change over valve, 9-front-wheel hand change over valve, 10-front-wheel, 11-bearing circle, 12-efp, 13-outboard engine, 14-hinge, the left back wheel guard box of 15-hydraulic actuating cylinder, 16-hull support, the left back landing leg hydraulic cylinder of 17-, 18-bearing pin, 19-wheel stand, 20-front leg strut hydraulic actuating cylinder, 21-front-wheel hydraulic lock, 22-sequence valve I, 23-sequence valve II, the left back wheel hydraulic lock of 24-, 25-by pass valve, 26-hydraulic electric motor pump, 27-magnetic core filter, 28-spring cotter, 29-bearing pin pad, 30-fuel tank, 31-compression indicator, 32-right rear wheel guard box hydraulic actuating cylinder, 33-right rear wheel hydraulic lock, the right back landing leg hydraulic cylinder of 34-, 35-water proof glue.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Fig. 1 is whole ship structural representation.Wherein show the roughly constituent elements of amphibious ship.The driving waterborne of this ship is that outboard engine 13 drives as seen from the figure, and bearing circle 11 can be controlled its direction, and efp 12 is controlled the rotating speed of outboard engine 13.In the time walking by land, selector bar 7 is switched to land walking mode, puts down respectively front-wheel 10 and trailing wheel 3 by front-wheel hand change over valve 9 and trailing wheel hand change over valve 8, in the time putting down trailing wheel 3, need to first open over cap 4.Guard box 1 is welded to connect with hull 5.The concrete structure of guard box 1 and guard box sealing band 2 as shown in Figure 6.
The bottom of guard box 1 will be higher than the bottom of hull 5 as figure shows, can ensure that, after retractable wheels, the guard box of amphibious ship is higher than sea level certain distance.Not having seawater enters in guard box.But in the time of ship high-speed cruising, ship not only has left and right and jolts, and front fore lifts, and the guard box of stern can be immersed in marine, and the sealing mechanism that now guard box 1 and over cap 4 form can prevent that seawater from entering in guard box 1.
Fig. 2 is hydraulic schematic diagram of the present utility model.The fluid that in system, hydraulic electric motor pump 26 draws from fuel tank 30, by magnetic core filter 27, trailing wheel hand change over valve 8, what front-wheel hand change over valve 9 was connected is transported to power element.By pass valve 25 is for preventing system overload, and compression indicator 31 is monitored its pressure.Front-wheel hydraulic lock 21, left back wheel hydraulic lock 24 and right rear wheel hydraulic lock 33 are made up of two hydraulic control one-way valves in fact, and it can lock in the time that front leg strut hydraulic actuating cylinder 20, left back landing leg hydraulic cylinder 17, right back landing leg hydraulic cylinder 34 do not move.The sequentially-operating of left back landing leg hydraulic cylinder 17 and left back wheel guard box hydraulic actuating cylinder 15, right back landing leg hydraulic cylinder 34 and right rear wheel guard box hydraulic actuating cylinder 32 is realized by pressure control type sequentially-operating loop.
The hydraulic lift of front-wheel 10 is referring to front-wheel 10 lifting mechanisms in patent 201410124062.3, and front-wheel 10 is arranged on front tyre support, and front tyre support is connected with front-wheel hull rack pin shaft; Front-wheel hull support is connected with front leg strut hydraulic actuating cylinder 20 bearing pins, and front leg strut hydraulic actuating cylinder 20 is connected by bearing pin with hull 5, completes the lifting of front-wheel 10.
When the land walking of amphibian vehicle, wheel is fallen mode as shown in the figure; when trailing wheel hand change over valve 8 is in left when position; hydraulic oil enters the rodless cavity of left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32, and cylinder bar moves downward, and completes opening of over cap 4.In the time that left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32 move to terminal; oil liquid pressure raises, opening sequence valve II 23, and fluid enters the rodless cavity of left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34; cylinder bar moves downward, and completes the action that rear wheel puts down.10, front-wheel directly puts down.
When amphibian vehicle is prepared in the time that marine running vehicle wheel is packed up, trailing wheel hand change over valve 8 is in right position, and hydraulic oil enters the rod chamber of left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34, and cylinder bar upward movement completes the action of packing up of wheel.In the time that left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34 move to terminal; oil liquid pressure raises, opening sequence valve I 22, and fluid enters the rod chamber of left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32; cylinder bar upward movement, completes the closing movement of over cap 4.10, front-wheel is directly packed up.
Fig. 3 is the utility model wheel structural representation (taking off hind wheel as example) while falling.Over cap 4 is connected by hinge 14 with guard box 1.Right rear wheel guard box hydraulic actuating cylinder 32 is connected by bearing pin with over cap 4, and right rear wheel guard box hydraulic actuating cylinder 32 is connected by bearing pin with the support of guard box 1.Between right back landing leg hydraulic cylinder 34 and hull support 16, be connected by bearing pin, between right back landing leg hydraulic cylinder 34 and wheel stand 19, be connected by bearing pin.Ship upper pin structural representation as shown in Figure 7.
The axonometric drawing of structural representation when Fig. 4 the utility model wheel rises.Guard box 1 designs aslope shape and prevents that dead point from producing.
The front elevation of structural representation when Fig. 4 a is the rise of the utility model wheel (for convenience of observing, omitting guard box one side box body).As shown in the figure, when wheel is fallen because L1>L2, L4>L5, so when rear wheel 3 puts down and between guard box 1 without interfering; When wheel rises (as shown by arrows), L1>L2, L6>D, so rear wheel 3 rises between rear and guard box 1 without interfering.
The right elevation of structural representation when Fig. 4 b is the rise of the utility model wheel (for ease of observing, omitting over cap).As we know from the figure, L3>D, so rear wheel 3 and right wheel guard box hydraulic actuating cylinder 32 are without interfering.
Schematic diagram when Fig. 5 is the utility model protection mechanism closure.As shown in the figure, now trailing wheel hand change over valve 8 is in meta, and right rear wheel guard box hydraulic actuating cylinder 32, in this position locking, makes to combine closely and ensure the sealing of wheel between guard box sealing band 2 and over cap 4.
Fig. 6 is the isometric cutaway view of the utility model guard box sealing band.Guard box 1 is pasted by water proof glue 35 with guard box sealing band 2.Guard box sealing band 2 adopts sealing joint strip peculiar to vessel, has withstanding corrosion, and sea water resistance is wear-resisting, antiseepage, the advantage of leakproof.
Fig. 7 is the constructional drawing of the utility model hinge.It is ship-used rust-proof hinge, and guard box 1 and over cap 4 are by its connection.
The structure cutaway view (as representative) of Fig. 8 the utility model bearing pin.As shown in the figure, right back landing leg hydraulic cylinder 34 is connected by bearing pin 18 with wheel stand 19, and spring cotter 28 afterbodys separate fitting pin axle pad 29, in case bearing pin 18 is deviate from.
The specific works process of this programme is as follows:
In the time that this ship drives in water, wheel is packed up.Manually trailing wheel hand change over valve 8 makes it in right position, and hydraulic oil enters the rod chamber of left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34, and cylinder bar upward movement completes the action of packing up of wheel.In the time that left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34 move to terminal; oil liquid pressure raises, opening sequence valve I 22, and fluid enters the rod chamber of left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32; cylinder bar upward movement, completes the closing movement of over cap 4.After this trailing wheel hand change over valve 8 is in meta, and left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32 are in this position locking.Under the effect of guard box sealing band 2, over cap 4 is combined closely and is ensured the sealing of wheel with guard box 1.Now wheel is isolated from seawater completely, has both reduced the resistance between wheel and seawater, has prevented again corrosion and the wearing and tearing of wheel physical construction.
In the time that ship is prepared to travel by land, wheel is fallen.Manually trailing wheel hand change over valve 8 makes it in left position, and hydraulic oil enters the rodless cavity of left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32, and cylinder bar moves downward, and completes opening of protection case lid.In the time that left back wheel guard box hydraulic actuating cylinder 15 and right rear wheel guard box hydraulic actuating cylinder 32 move to terminal; oil liquid pressure raises, opening sequence valve II 23, and fluid enters the rodless cavity of left back landing leg hydraulic cylinder 17 and right back landing leg hydraulic cylinder 34; cylinder bar moves downward, and completes the action that wheel is fallen.
Claims (10)
1. the rear wheel of amphibious ship is packed up a protection mechanism, it is characterized in that, it comprises:
Guard box, guard box is arranged on afterbody both sides, and the bottom of guard box will be higher than hull bottom;
Guard box is provided with an able to turn on or off over cap, their contact position sealing;
In guard box, be provided with trailing wheel hydraulic lift, trailing wheel is mounted thereto;
Over cap is also connected with hydraulic opening-closing device simultaneously;
Trailing wheel hydraulic lift is all connected with hydraulic control device with hydraulic opening-closing device, and hydraulic control device adopts the lifting action of sequence control mode control trailing wheel and the switching of over cap.
2. the rear wheel of amphibious ship as claimed in claim 1 is packed up protection mechanism; it is characterized in that; described two trailing wheel hydraulic lift structures are identical; include rear support leg hydraulic actuating cylinder; it is connected with hull rack pin shaft; rear support leg hydraulic actuating cylinder is also connected with wheel stand bearing pin simultaneously, and trailing wheel is installed on wheel stand, and rear support leg hydraulic actuating cylinder is connected with hydraulic control device.
3. the rear wheel of amphibious ship as claimed in claim 1 is packed up protection mechanism; it is characterized in that; described hydraulic opening-closing device comprises the guard box hydraulic actuating cylinder being connected with over cap, and guard box hydraulic actuating cylinder is connected with the rack pin shaft of guard box, and guard box hydraulic actuating cylinder is connected with hydraulic control device.
4. the rear wheel of amphibious ship as claimed in claim 1 is packed up protection mechanism, it is characterized in that, between described guard box and over cap, is connected through the hinge.
5. the rear wheel of amphibious ship as claimed in claim 1 is packed up protection mechanism, it is characterized in that, described guard box and over cap contact position are provided with guard box sealing band, and guard box sealing band is placed in the fluting of guard box and is connected with guard box by water proof glue.
6. as the rear wheel of the amphibious ship of claim 1 or 2 or 3 as described in arbitrary is packed up protection mechanism; it is characterized in that; described hydraulic control device comprises hydraulic electric motor pump; it is connected with fuel tank; hydraulic electric motor pump is connected with trailing wheel change-over valve by oil circuit; trailing wheel change-over valve is connected with two sequence valves respectively, and each sequence valve is connected with corresponding rear support leg hydraulic actuating cylinder and guard box hydraulic actuating cylinder.
7. the rear wheel of amphibious ship as claimed in claim 6 is packed up protection mechanism, it is characterized in that, on described each landing leg hydraulic cylinder, is respectively equipped with hydraulic lock separately, and hydraulic lock is made up of two hydraulic control one-way valves, locking in the time that landing leg hydraulic cylinder does not move.
8. the rear wheel of amphibious ship as claimed in claim 6 is packed up protection mechanism, it is characterized in that, described hydraulic electric motor pump is connected with fuel tank by magnetic core filter.
9. the rear wheel of amphibious ship as claimed in claim 6 is packed up protection mechanism, it is characterized in that, described hydraulic electric motor pump oil circuit is provided with by pass valve, and described hydraulic electric motor pump oil circuit is provided with compression indicator.
10. the rear wheel of amphibious ship as claimed in claim 1 is packed up protection mechanism, it is characterized in that, described guard box becomes to prevent the ramp shaped that dead point produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191617.1U CN203766424U (en) | 2014-04-19 | 2014-04-19 | Retracting-protecting mechanism for rear vehicle wheels of amphibious ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191617.1U CN203766424U (en) | 2014-04-19 | 2014-04-19 | Retracting-protecting mechanism for rear vehicle wheels of amphibious ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203766424U true CN203766424U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420191617.1U Expired - Fee Related CN203766424U (en) | 2014-04-19 | 2014-04-19 | Retracting-protecting mechanism for rear vehicle wheels of amphibious ship |
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| Country | Link |
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| CN (1) | CN203766424U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950359A (en) * | 2014-04-19 | 2014-07-30 | 青岛理工大学 | Rear wheel retracting and protecting mechanism for amphibious boat |
| CN104149564A (en) * | 2014-08-28 | 2014-11-19 | 北京航空航天大学 | Drag reduction mechanism for wheel type multipurpose vehicle |
| CN105464165A (en) * | 2016-01-08 | 2016-04-06 | 福建海山机械股份有限公司 | Excavator chassis with folding supporting legs |
-
2014
- 2014-04-19 CN CN201420191617.1U patent/CN203766424U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950359A (en) * | 2014-04-19 | 2014-07-30 | 青岛理工大学 | Rear wheel retracting and protecting mechanism for amphibious boat |
| CN103950359B (en) * | 2014-04-19 | 2016-01-20 | 青岛理工大学 | The rear wheel of amphibious ship packs up protection mechanism |
| CN104149564A (en) * | 2014-08-28 | 2014-11-19 | 北京航空航天大学 | Drag reduction mechanism for wheel type multipurpose vehicle |
| CN105464165A (en) * | 2016-01-08 | 2016-04-06 | 福建海山机械股份有限公司 | Excavator chassis with folding supporting legs |
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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 |
Granted publication date: 20140813 Termination date: 20150419 |
|
| EXPY | Termination of patent right or utility model |