CN204110324U - A kind of self discharging ship conveying jib - Google Patents
A kind of self discharging ship conveying jib Download PDFInfo
- Publication number
- CN204110324U CN204110324U CN201420588726.7U CN201420588726U CN204110324U CN 204110324 U CN204110324 U CN 204110324U CN 201420588726 U CN201420588726 U CN 201420588726U CN 204110324 U CN204110324 U CN 204110324U
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- arm
- oil cylinder
- mast
- segment
- jib
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Abstract
The utility model discloses a kind of self discharging ship conveying jib, comprise arm support component and folding and unfolding assembly, described arm support component comprises hinged first segment arm and second section arm, one end away from second section arm on described first segment arm is articulated with on hull, described second section arm is discharge end away from one end of first segment arm, described folding and unfolding assembly comprises mast, elevator parts, steel rope and at least one first oil cylinder, one end of described steel rope is connected with elevator parts, be connected with first segment arm or second section arm after the other end walks around the top of mast, described mast and the first oil cylinder are all installed on hull, the described telescopic end of the first oil cylinder is connected with the middle part of mast.The utility model has the advantages such as cost is lower, more safe and reliable.
Description
Technical field
The utility model is mainly concerned with transport class ship domain, refers in particular to a kind of conveying jib being applicable to self discharging ship.
Background technology
At present, self-unloading boats and ships are usually by the transport class boats and ships as materials such as transport sandstones, and the freight house of boats and ships, for realizing high efficiency unloading, often manufactures two-layer: upper strata is cargo layer by this kind of boats and ships, and band conveyor is installed by lower floor.The machinery conveying jib used in traditional self-unloading boats and ships is all long, thus has had influence on shipping safety.For solving this technical problem, separately have practitioner to propose a kind of class jib that conveying arm can be made folding, but this type of jib still come with some shortcomings: 1. under mode of operation, arm support oil cylinder is stressed excessive, and jib is stressed unreasonable, there is potential safety hazard; 2. the stroke of arm support oil cylinder is often long, so that manufacturing cost is too high; 3. the easy sideslip of belt conveyor.
Utility model content
The technical problems to be solved in the utility model is just: the technical matters existed for prior art, the self discharging ship conveying jib that the utility model provides a kind of cost lower, more safe and reliable.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of self discharging ship conveying jib, comprise arm support component and folding and unfolding assembly, described arm support component comprises hinged first segment arm and second section arm, one end away from second section arm on described first segment arm is articulated with on hull, described second section arm is discharge end away from one end of first segment arm, described folding and unfolding assembly comprises mast, elevator parts, steel rope and at least one first oil cylinder, one end of described steel rope is connected with elevator parts, be connected with first segment arm or second section arm after the other end walks around the top of mast, described mast and the first oil cylinder are all installed on hull, the described telescopic end of the first oil cylinder is connected with the middle part of mast.
As further improvement of the utility model: described first oil cylinder is arranged in the side of mast towards freight house on hull.
As further improvement of the utility model: arrange the second oil cylinder between described first segment arm and second section arm, any one is connected with first segment arm and second section arm in one end of described second oil cylinder, and the other end of described second oil cylinder is connected with another one by connecting rod mechanism.
As further improvement of the utility model: arrange an oil cylinder lockable mechanism between described first segment arm and second section arm, described oil cylinder lockable mechanism comprises locking oil cylinder, pawl assembly, hanging hook assembly, described hanging hook assembly is connected with in second section arm and first segment arm, described pawl assembly and another one hinged, two oil cylinder lockable mechanisms symmetrically shape are arranged in the both sides of jib and drive pawl assembly.
As further improvement of the utility model: the discharge end of described second section arm also comprises a set of belt tensioning mechanism, described belt tensioning mechanism comprises tensioning hydro-cylinder, belt tensioning drum, slide block and chute, described chute is two extensions laying respectively at jib end, and arranges along the throughput direction of belt conveyor; The two ends of described belt tensioning drum arrange slide block, and described slide block set is located in chute, and the telescopic end of described tensioning hydro-cylinder is connected with belt tensioning drum and belt tensioning drum can be driven to slide in chute and realizes belt tension.Described belt tensioning drum is the shape of middle part cylinder, two round platform, and mid diameter is maximum.
As further improvement of the utility model: described first segment arm comprises first segment arm carrying roller carriage and two first segment arm principal arm framves, described first segment arm carrying roller carriage is positioned in the middle of two first segment arm principal arm framves; Described second section arm comprises second section arm carrying roller carriage and two second section arm principal arm framves, and described second section arm carrying roller carriage is positioned in the middle of two second section arm principal arm framves.
As further improvement of the utility model: described first segment arm principal arm frame and/or second section arm principal arm frame offer some lightening holes.
As further improvement of the utility model: described first segment arm is connected with hull by two erection supports, two erection supports symmetrically shape are arranged in the both sides of fore egress hatch on hull, and described first segment arm, mast, the erection support of the first oil cylinder all with corresponding are hinged.
As further improvement of the utility model: the top of described mast is provided with a leading sheave group, the close bin location below of described elevator parts arranges fixed pulley group, one end of described steel rope is set around in fixed pulley group, the other end of described steel rope is then set around on a running block, described running block is installed on movable pulley bracing frame, and described movable pulley bracing frame is connected to the tail end of first segment arm or is connected on second section arm.
As further improvement of the utility model: on described mast, the center of leading sheave group and the line of mast bottom hinge and vertical direction depart from certain angle, and offset direction is toward the middle part on hull.
As further improvement of the utility model: the position that described first segment arm contacts with mast arranges wear plate.
As further improvement of the utility model: be also provided with support post near the installation site of fixed pulley group, fall thereon after whole arm support folding.
Compared with prior art, the utility model has the advantage of:
1, self discharging ship conveying jib of the present utility model, in working order, whole conveying jib weight bears most of power by elevator parts.Because now mast and vertical direction depart from certain angle, so the first cylinder force state is pressurized, is conducive to like this improving safety, reduces oil cylinder cylinder diameter, reduce costs.
2, in self discharging ship of the present utility model conveying jib one end of the first oil cylinder and mast hinged, the other end and erection support hinged, be furnished with like this and be beneficial to reduction oil cylinder stroke, reduce costs.
3, self discharging ship conveying jib of the present utility model, in working order, connects in aggregates by oil cylinder lockable mechanism by first segment arm, second section arm, can effectively share the stressed of the second oil cylinder, be conducive to improving safety, reduce the second oil cylinder cylinder diameter, reduce costs.
4, self discharging ship conveying jib of the present utility model, by arranging belt tensioning mechanism, and utilizing the unique profile of belt tensioning drum, reaching the effect preventing belt deflection.
5, self discharging ship conveying jib of the present utility model, jib is due to reasonable stress, jib length hinge structure can lengthen, if make full use of the good feature of first segment arm force-bearing situation, setting first segment brachium is in second section arm, and the length of whole jib can reach prior art three and save the length that arm just can reach.
Accompanying drawing explanation
Fig. 1 be the utility model in running order in embodiment 1 time structural principle schematic diagram.
Fig. 2 is the main TV structure principle schematic of the utility model first segment arm and second section arm junction in embodiment 1.
Fig. 3 is the spatial structure principle schematic of the utility model first segment arm and second section arm junction in embodiment 1.
Fig. 4 is the mounting structure schematic diagram of the utility model mast and the first oil cylinder in embodiment 1.
Fig. 5 is the structural principle schematic diagram of the utility model belt tensioning mechanism in embodiment 1.
Fig. 6 is the structural principle schematic diagram of the utility model when being in folding state in embodiment 1.
Fig. 7 be the utility model in running order in example 2 time structural principle schematic diagram.
Marginal data:
1, erection support; 2, first segment arm; 3, second section arm; 4, mast; 5, elevator parts; 6, fixed pulley group; 7, running block; 8, leading sheave group; 9, limited roller; 10, jacking roller; 11, steel rope; 12, the first oil cylinder; 13, the second oil cylinder; 14, connecting rod mechanism; 15, oil cylinder lockable mechanism; 16, belt tensioning mechanism; 17, movable pulley bracing frame; 18, wear plate; 19, hull; 20, channel-section steel; 21, diagonal brace angle steel; 22, angle steel; 23, conveying carrier roller; 24, return idler; 25, support post; 201, first segment arm principal arm frame; 202, first segment arm carrying roller carriage; 301, second section arm principal arm frame; 302, second section arm carrying roller carriage; 1501, locking oil cylinder; 1502, pawl assembly; 1503, hanging hook assembly; 1601, tensioning hydro-cylinder; 1602, belt tensioning drum; 1603, slide block; 1604, chute.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the utility model is described in further details.
Embodiment 1: as shown in Fig. 1 ~ Fig. 6, a kind of self discharging ship conveying jib of the present utility model, comprise arm support component and folding and unfolding assembly, arm support component comprises hinged first segment arm 2 and second section arm 3, first segment arm 2 is articulated with on hull 19 away from one end of second section arm 3, and second section arm 3 is discharge end away from one end of first segment arm 2.Folding and unfolding assembly comprises mast 4, elevator parts 5, steel rope 11 and two the first oil cylinders 12, one end of steel rope 11 is connected with elevator parts 5, be connected with first segment arm 2 or second section arm 3 after the other end walks around the top of mast 4, mast 4 and the first oil cylinder 12 are all installed on hull 19, and the telescopic end of the first oil cylinder 12 is connected with the middle part of mast 4.
In the present embodiment, the first oil cylinder 12 is arranged in the side of mast 4 towards freight house on hull 19.
In the present embodiment, any one is connected with first segment arm 2 and second section arm 3 to arrange one end of the second oil cylinder 13, second oil cylinder 13 between first segment arm 2 and second section arm 3, and the other end of the second oil cylinder 13 is connected with another one by connecting rod mechanism 14.Second oil cylinder 13 is the both sides that two oil cylinders lay respectively at jib, also can be set to one according to actual needs.Connecting rod mechanism 14 is used for connecting first segment arm 2, second section arm 3 and the second oil cylinder 13, and connecting rod mechanism 14 can be two, and symmetrically shape is arranged in the both sides of jib.
In the present embodiment, an oil cylinder lockable mechanism 15 is set, to ensure that first segment arm 2 and second section arm 3 are operationally in smooth coupled condition between first segment arm 2 and second section arm 3.
In the present embodiment, first segment arm 2 comprises first segment arm carrying roller carriage 202 and two first segment arm principal arm framves 201, and first segment arm carrying roller carriage 202 is positioned in the middle of two first segment arm principal arm framves 201, and with the sidewall weld of first segment arm principal arm frame 201.In the preferred embodiment, first segment arm principal arm frame 201 offers some lightening holes, reduces the deadweight of whole jib with this.Second section arm 3 comprises second section arm carrying roller carriage 302 and two second section arm principal arm framves 301, and second section arm carrying roller carriage 302 is positioned in the middle of two second section arm principal arm framves 301, and with the sidewall weld of second section arm principal arm frame 301.
In the present embodiment, first segment arm 2 is connected with hull 19 by two erection supports 1, two erection supports 1 symmetrically shape are arranged in the both sides of fore egress hatch on hull 19, erection support 1 is positioned at the fore place of hull 19 and welds with ship deck, and first segment arm 2, the erection support 1 of mast 4, first oil cylinder 12 all with corresponding are hinged.
See Fig. 5, in the present embodiment, first segment arm carrying roller carriage 202 is identical with the structure of second section arm carrying roller carriage 302, be two-layer framed structure, its upper strata framework is made up of channel-section steel 20 and diagonal brace angle steel 21, and lower floor is only made up of channel-section steel 20, and channel-section steel 20 number is fewer than upper strata; The surrounding of framework is provided with four angle steel 22 to be connected with principal arm frame (first segment arm principal arm frame 201, second section arm principal arm frame 301) respectively.The top of whole carrying roller carriage is provided with conveying carrier roller 23, plays the function of conveying river sand, is provided with return idler 24 support belt below.
In the present embodiment; bottom and the erection support 1 of mast 4 are hinged; the top of mast 4 is provided with a leading sheave group 8; steel rope 11 is placed in the race of leading sheave group 8 leading sheave; be not wound around leading sheave; leading sheave group 8 its act as and avoid the steel structure of steel rope 11 and mast 4 itself to rub, and then protect steel rope 11.One end of steel rope 11 is connected with the elevator parts 5 on hull 19 through after leading sheave group 8, and elevator parts 5 are fixed in the middle part of ship deck, arranges fixed pulley group 6 further at the close bin location below of elevator parts 5.The other end of steel rope 11 is then set around on a running block 7, running block 7 is installed on movable pulley bracing frame 17, movable pulley bracing frame 17 is connected to the tail end of first segment arm 2, and hinged with the tail end of principal arm frame on first segment arm 2 (first segment arm principal arm frame 201), and be positioned at the top of first segment arm carrying roller carriage 202.In embody rule example, fixed pulley group 6 is made up of several pulleys, is arranged in the middle part of boats and ships by near freight house.Running block 7 is made up of several pulleys, is arranged on movable pulley bracing frame 17.Steel rope 11, in winding process, walks around the fixed pulley in fixed pulley group 6, then the pulley in leading sheave group 8, around arriving running block 7; Another pulley again in leading sheave group 8, raps around to another fixed pulley in fixed pulley group 6, and so forth, until around complete all pulleys.
In the present embodiment, above leading sheave group 8, be also provided with one group of limited roller 9 further.When jib in running order (sediment transport), on mast 4, the center of leading sheave group 8 and the line of mast 4 bottom hinge and vertical direction depart from certain angle, and offset direction is biased toward boats and ships pars intermedia, is namely partial to freight house direction.Mast 4 is also provided with jacking roller 10 towards the side (being left side in figure) of first segment arm 2, and for holding, conveying jib is folding as a whole to be reclaimed and hoists.The structure of whole mast 4 is in " A " font, lower face width, narrow above, as shown in the figure.
In the present embodiment, the position that first segment arm 2 contacts with mast 4 arranges wear plate 18, can not be damaged to protect first segment arm 2 in folding process.
In the present embodiment, near the installation site of fixed pulley group 6, be also provided with support post 25, fall thereon after whole arm support folding.
See Fig. 2, in the present embodiment, oil cylinder lockable mechanism 15 comprises locking oil cylinder 1501, pawl assembly 1502, hanging hook assembly 1503 and sensing detection element, wherein hanging hook assembly 1503 is connected with in second section arm 3 and first segment arm 2, pawl assembly 1502 and another one are hinged, and two oil cylinder lockable mechanisms 15 symmetrically shape are arranged in the both sides of jib to drive pawl assembly 1502.
See Fig. 5, in the present embodiment, the utility model also comprises a set of belt tensioning mechanism 16, this belt tensioning mechanism 16 comprises tensioning hydro-cylinder 1601, belt tensioning drum 1602, slide block 1603 and chute 1604, chute 1604 is two extensions laying respectively at jib end, and arranges along the throughput direction of belt conveyor.The two ends of belt tensioning drum 1602 arrange slide block 1603, and slide block 1603 is sheathed in chute 1604, and the telescopic end of tensioning hydro-cylinder 1601 is connected with belt tensioning drum 1602 and belt tensioning drum 1602 can be driven to slide in chute 1604 and realizes belt tension.In this example, belt tensioning drum 1602 is the shape of middle part cylinder (and largest diameter), two round platform.
Principle of work:
During mode of operation, first segment arm 2 and second section arm 3 connect into straight line, and oil cylinder lockable mechanism 15 pins, and tensioning hydro-cylinder 1601 extends with Conveyer Belt.Steel rope 11, by fixed pulley group 6, leading sheave group 8, running block 7, holds whole conveying arm, and freight house material is transported to bank via conveying carrier roller 23.Now, on mast 4, the line of leading sheave group 8 center and mast 4 bottom hinge and vertical direction depart from certain angle, offset direction is towards boats and ships middle part, namely freight house direction is partial to, like this then the first oil cylinder 12 pressurized, mast 4 pressurized, and whole conveying jib weight bears most of power by elevator parts 5.In this process, just can realize by the folding and unfolding of elevator parts 5 pairs of steel ropes 11 luffing carrying jib.
It is that first tensioning hydro-cylinder 1601 is retracted that jib reclaims folding process, allows load-transfer device relax; Then, jib entirety is up promoted certain angle (such as 60 °) by elevator parts 5.When being arranged on the level inclination sensor on first segment arm 2 and detecting that jib is greater than 60 °, the second oil cylinder 13 continues to extend jacking second section arm 3 a little, then locking oil cylinder 1501 action, and pawl assembly 1502 skids off from hanging hook assembly 1503; Second oil cylinder 13 is retracted, drives second section arm 3 down to fold.Next, elevator parts 5 receive steel rope 11 to stack the first segment folded arm 2, second section arm 3 integral-rotation to jacking roller 10 place on mast 4.Then, the first oil cylinder 12 is retracted, and drives first segment arm 2, second section arm 3, mast 4 toward falling to desired location.In the process, the synchronous rope closing of elevator parts 5.Jib plays arm process: the first oil cylinder 12 stretches out, mast 4 rotates to end position, first segment arm 2, second section arm 3 are hauled slowly toward transferring by steel rope 11 under gravity subsequently, first segment arm 2 transfers angle when reaching setting value, again the first oil cylinder 12 to be retracted a part, mast 4 is tilted toward freight house direction, keeps the first oil cylinder 12 to be pressured state.Then, elevator parts 5 continue to put steel rope 11, when being arranged on the level inclination sensor on first segment arm 2 and detecting that jib is greater than setting value (such as 60 °), the second oil cylinder 13 stretches out and extends end position, locking oil cylinder 1501 action, pawl assembly 1502 is inserted hanging hook assembly 1503, now, first segment arm 2, second section arm 3 connect in aggregates, and elevator parts 5 continue to put steel rope 11, make conveying arm be placed on mode of operation, just start mass transport work.
Embodiment 2: as shown in Figure 7, structure and the embodiment 1 of this embodiment are basically identical, difference is just: running block 7 is arranged on the both sides of the second section arm principal arm frame 301 of second section arm 3, and in the case, its arm support folding mode can be divided into again up folding and down folding two kinds of forms.
Below be only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection domain of the present utility model should be considered as.
Claims (10)
1. a self discharging ship conveying jib, comprise arm support component and folding and unfolding assembly, described arm support component comprises hinged first segment arm (2) and second section arm (3), described first segment arm (2) is articulated with on hull (19) away from one end of second section arm (3), one end away from first segment arm (2) on described second section arm (3) is discharge end, it is characterized in that, described folding and unfolding assembly comprises mast (4), elevator parts (5), steel rope (11) and at least one the first oil cylinder (12), one end of described steel rope (11) is connected with elevator parts (5), be connected with first segment arm (2) or second section arm (3) after the other end walks around the top of mast (4), described mast (4) and the first oil cylinder (12) are all installed on hull (19), the telescopic end of described first oil cylinder (12) is connected with the middle part of mast (4).
2. self discharging ship conveying jib according to claim 1, is characterized in that, described first oil cylinder (12) is arranged in the side of mast (4) towards the upper freight house of hull (19).
3. self discharging ship conveying jib according to claim 1, it is characterized in that, between described first segment arm (2) and second section arm (3), the second oil cylinder (13) is set, any one is connected with first segment arm (2) and second section arm (3) in one end of described second oil cylinder (13), and the other end of described second oil cylinder (13) is connected with another one by connecting rod mechanism (14).
4. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, it is characterized in that, one oil cylinder lockable mechanism (15) is set between described first segment arm (2) and second section arm (3), described oil cylinder lockable mechanism (15) comprises locking oil cylinder (1501), pawl assembly (1502), hanging hook assembly (1503), described hanging hook assembly (1503) is connected with in second section arm (3) and first segment arm (2), described pawl assembly (1502) is hinged with another one, two oil cylinder lockable mechanisms (15) symmetrically shape are arranged in the both sides of jib and drive pawl assembly (1502).
5. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, it is characterized in that, the discharge end of described second section arm (3) also comprises a set of belt tensioning mechanism (16), described belt tensioning mechanism (16) comprises tensioning hydro-cylinder (1601), belt tensioning drum (1602), slide block (1603) and chute (1604), described chute (1604) is two extensions laying respectively at jib end, and arranges along the throughput direction of belt conveyor; The two ends of described belt tensioning drum (1602) arrange slide block (1603), described slide block (1603) is sheathed in chute (1604), and the telescopic end of described tensioning hydro-cylinder (1601) is connected with belt tensioning drum (1602) and belt tensioning drum (1602) can be driven to slide in chute (1604) and realizes belt tension; Described belt tensioning drum (1602) is middle part cylinder, the shape of two round platform, and mid diameter is maximum.
6. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, it is characterized in that, described first segment arm (2) comprises first segment arm carrying roller carriage (202) and two first segment arm principal arms frame (201), and described first segment arm carrying roller carriage (202) is positioned in the middle of two first segment arm principal arms frame (201); Described second section arm (3) comprises second section arm carrying roller carriage (302) and two second section arm principal arms frame (301), and described second section arm carrying roller carriage (302) is positioned in the middle of two second section arm principal arms frame (301).
7. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, it is characterized in that, described first segment arm (2) is connected with hull (19) by two erection supports (1), two erection supports (1) symmetrically shape are arranged in the both sides of the upper fore egress hatch of hull (19), and described first segment arm (2), mast (4), the first oil cylinder (12) erection support (1) all with corresponding is hinged.
8. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, it is characterized in that, the top of described mast (4) is provided with a leading sheave group (8), the close bin location of described elevator parts (5) arranges fixed pulley group (6), one end of described steel rope (11) is set around in fixed pulley group (6), the other end of described steel rope (11) is then set around on a running block (7), described running block (7) is installed on movable pulley bracing frame (17), described movable pulley bracing frame (17) is connected to the tail end of first segment arm (2) or is connected on second section arm (3).
9. self discharging ship conveying jib according to claim 8, it is characterized in that, described mast (4) is gone up the center of leading sheave group (8) and the line of mast (4) bottom hinge and vertical direction and is departed from certain angle, and offset direction is toward the middle part on hull (19).
10. the conveying jib of the self discharging ship according to claim 1 or 2 or 3, is characterized in that, the upper position contacted with mast (4) of described first segment arm (2) arranges wear plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588726.7U CN204110324U (en) | 2014-10-13 | 2014-10-13 | A kind of self discharging ship conveying jib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588726.7U CN204110324U (en) | 2014-10-13 | 2014-10-13 | A kind of self discharging ship conveying jib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204110324U true CN204110324U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420588726.7U Withdrawn - After Issue CN204110324U (en) | 2014-10-13 | 2014-10-13 | A kind of self discharging ship conveying jib |
Country Status (1)
| Country | Link |
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| CN (1) | CN204110324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229080A (en) * | 2014-10-13 | 2014-12-24 | 聂一彪 | Conveying arm rest for self-discharging ship |
| CN105016268A (en) * | 2015-07-24 | 2015-11-04 | 长沙中联恒通机械有限公司 | Conveying arm and portal frame overturning structure and recovery and unfolding method |
-
2014
- 2014-10-13 CN CN201420588726.7U patent/CN204110324U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229080A (en) * | 2014-10-13 | 2014-12-24 | 聂一彪 | Conveying arm rest for self-discharging ship |
| CN105016268A (en) * | 2015-07-24 | 2015-11-04 | 长沙中联恒通机械有限公司 | Conveying arm and portal frame overturning structure and recovery and unfolding method |
| CN105016268B (en) * | 2015-07-24 | 2017-09-01 | 长沙中联恒通机械有限公司 | A kind of conveying arm and portal frame upset structure, recovery, method of deploying |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20170111 |
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| AV01 | Patent right actively abandoned |