CN202784700U - Material conveying system - Google Patents
Material conveying system Download PDFInfo
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- CN202784700U CN202784700U CN 201220511791 CN201220511791U CN202784700U CN 202784700 U CN202784700 U CN 202784700U CN 201220511791 CN201220511791 CN 201220511791 CN 201220511791 U CN201220511791 U CN 201220511791U CN 202784700 U CN202784700 U CN 202784700U
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- vertical channel
- guide rail
- tank body
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Abstract
The utility model discloses a material conveying system. The material conveying system comprises a horizontal channel, a vertical channel, a material-loading tank and a horizontal conveying cart for bearing the material-loading tank, wherein the a horizontal channel and the vertical channel are communicated with each other, and an integral airtight space is formed by inner spaces in both the horizontal channel and the vertical channel. The horizontal channel and the vertical channel are communicated with each other, the integral airtight space is formed by the inner spaces in both the horizontal channel and the vertical channel, leakage of flammable or poisonous gas generated by high-temperature flammable materials in the conveying process is avoided, and safety and reliability in the conveying process are guaranteed.
Description
Technical field
The utility model relates to the material transport equipment field, in particular to a kind of material-transporting system.
Background technology
Horizontal transport and vertical-lifting device are the significant transportation equipment in the commercial production, are mainly used in the continuous conveying process of vertical or conveying powdered at high spud angle, graininess and little lump material.The bont kind that is applied at present in the industry is a lot, such as belt conveyer, chain-linked conveyer, bucket elevator, slat conveyer etc.These bonts have characteristics and suitable application area separately, but the following defective of ubiquity: 1, be subject to temperature limiting, generally about 60 ℃, the best casting chain gig of heatproof also can only be applicable to bulk or the granular material that temperature is no more than 300 ℃ to present convey materials temperature.For some 300 ℃-1000 ℃ high-temperature material, existing material and structure all can't satisfy the high temperature requirement; 2, leak tightness is relatively poor, and general conveying lifting device can both satisfy the seal request of solid material, but in the course of conveying of inflammable high-temperature material, can be with the generation of flammable or noxious gas, present leak tightness does not satisfy the course of conveying of high-temperature material; 3, security and stability is poor, and original lifting means is mostly to overload sensitive, occurs easily material containing in the course of conveying too much or the foreign matter phenomenon that gets stuck, and for the requirement of combustible and poisonous gas safety, present equipment does not all relate to; 4, member is easy to wear, and material containing member and the driving component of existing lifting means wear and tear easily.
In view of the variety of issue of above existence, at present in the urgent need to a kind of suitable delivery system occurring to guarantee the Transport Safety in the high-temperature material process of the easy generation of transportation combustible and poisonous gas.
The utility model content
The utility model aims to provide a kind of material-transporting system, easily produces flammable in course of conveying or noxious gas and cause the unsafe technical matters of course of conveying to solve the high temperature flammable materials that exists in the prior art.
To achieve these goals, according to an aspect of the present utility model, a kind of material-transporting system is provided, comprise horizontal channel, Vertical Channel, material containing tank body and be used for the horizontal feed dolly of carrying material containing tank body, wherein horizontal channel and Vertical Channel are connected, and the inner space in horizontal channel and the Vertical Channel forms whole confined space.
Further, the horizontal channel is provided with inert gas protection device, makes in horizontal channel and the Vertical Channel by inert gas protection device to be filled with unreactable gas.
Further, inert gas protection device is arranged on the position of the close first end of horizontal channel, Vertical Channel be arranged on the horizontal channel near the position of the second end and extend upward.
Further, the upper end of the first end of horizontal channel and/or the second end and/or Vertical Channel is provided with gas-detecting device.
Further, be provided with the horizontal guide rail that moves for horizontal transport trolley in the horizontal channel, and be arranged on the second end of horizontal channel and in order to draw the draw gear of horizontal feed dolly; The wirerope that is provided with upright guide rail in the Vertical Channel and is arranged on the bont on upright guide rail top and is wrapped on the bont and is used for promoting the material containing tank body.
Further, also be provided with hook part on the wirerope, the hook that hook part comprises crossbeam and is arranged on the crossbeam lower end, the both sides of crossbeam are provided with first roller suitable with upright guide rail.
Further, the horizontal feed dolly comprises: trolley platform; The second roller is arranged on the bottom of trolley platform and suitable with horizontal guide rail; Vehicle-mounted pillar is arranged on the trolley platform for carrying material containing tank body; Vehicle-mounted guide rail relatively is arranged on the both sides midway location of trolley platform and with upright guide rail and engages.
Further, the material that is arranged on the first end of horizontal channel gives equipment, gives the feed arrangement of equipment connection with material; Be arranged on the material reception facilities of Vertical Channel upper end and the device for discharging that is arranged on material reception facilities one side.
Further, also comprise the charging weighting apparatus, the charging weighting apparatus comprises LOAD CELLS, the wirerope of falling the Y shape and movable guiding rail, and wherein, movable guiding rail and horizontal guide rail are flexibly connected; The first end that the wirerope of falling the Y shape is positioned at the upper end is connected on the LOAD CELLS, and the second end that is positioned at the lower end is connected with two movable guiding rails respectively with the 3rd end that is connected the lower end.
Further, the brake equipment and the air exhauster that also comprise the top that is arranged on Vertical Channel.
Further, be provided with equably the mode bit point equipment on the horizontal channel He on the Vertical Channel.
Horizontal channel and Vertical Channel that the utility model provides are connected, and the inner space in horizontal channel and Vertical Channel forms whole confined space, inflammable or the noxious gas of having avoided some high temperature flammable materials to produce in the process of carrying is revealed, and has guaranteed that the safety of transportation is with reliable.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the integral structure scheme drawing of material-transporting system;
Fig. 2 a shows the structural representation of hook part;
Fig. 2 b is the part-structure scheme drawing of Fig. 2 a.
Fig. 3 a shows the plan structure scheme drawing of horizontal feed dolly;
Fig. 3 b is the front view of Fig. 3 a;
Fig. 3 c is the right elevation of Fig. 3 a;
Fig. 4 a shows the main TV structure scheme drawing of material containing tank body;
Fig. 4 b is the birds-eye view of Fig. 4 a; And
Fig. 4 c is the lateral plan of Fig. 4 a.
The specific embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
According to a kind of exemplary embodiment of the present utility model, as shown in Figure 1, material-transporting system comprises horizontal channel 2, Vertical Channel 15, material containing tank body 9 and is used for the slidably horizontal feed dolly 8 of carrying material containing tank body 9, horizontal channel 2 and Vertical Channel 15 are connected, and the inner space in horizontal channel 2 and the Vertical Channel 15 forms whole confined space.Because horizontal channel and Vertical Channel have airtight space, the inflammable or noxious gas of having avoided some high temperature flammable materials to produce in course of conveying is revealed, and has guaranteed the safety of transportation and reliable.
Preferably, as shown in Figure 1, horizontal channel 2 is provided with inert gas protection device 6, makes in horizontal channel 2 and the Vertical Channel 15 by gas shield device 6 to be filled with unreactable gas.Inert gas protection device 6 is arranged on the position of the close first end of horizontal channel 2, Vertical Channel 15 be arranged on horizontal channel 2 near the position of the second end and extend upward.
Inert gas protection device 6 mainly plays safety guard-safeguard and the regularly effect of inert gas purge.Because system belongs to high temperature and exists inflammable or the operating mode such as noxious gas, therefore need to use unreactable gas to carry out temperature control and in time discharge flammable or noxious gas; Because at ordinary times inconvenience of internal system is overhauled, by regular inert purge, the problem of resolution system internal measurement element dust stratification is so purge the dustproof maintenance function that part is mainly used in measuring cell simultaneously.Inert gas protection device 6 is set had both guaranteed leak tightness and the safety problem of material in transportation, also played simultaneously the effect of cleaning.
In order to guarantee that the flammable or poisonous gas in the airtight passage can regularly discharge, according to a kind of exemplary embodiment of the present utility model, the upper end of the first end of horizontal channel 2 and/or the second end and/or Vertical Channel 15 is provided with gas-detecting device 1.In addition, video monitoring device can also be set, such as camera is installed key position be monitored.
As shown in Figure 1, be provided with the horizontal guide rail 7 that moves for horizontal transport trolley 8 in the horizontal channel 2, and the second end and the draw gear 19 in order to draw horizontal feed dolly 8 that are arranged on horizontal channel 2; The wirerope that is provided with upright guide rail 18 in the Vertical Channel 15 and is arranged on the bont 13 on upright guide rail 18 tops and is wrapped on the bont 13 and is used for promoting material containing tank body 9.In order to guarantee that material containing tank body 9 vertically and stably rises under the traction of the wirerope of bont 13, preferably, shown in Fig. 2 a and Fig. 2 b, also be provided with hook part 16 on the wirerope, hook part 16 hook 162 that comprises crossbeam 161 and be arranged on crossbeam 161 lower ends wherein, the both sides of its center member 161 are provided with first roller 163 suitable with upright guide rail 18.In transportation, hook 162 hooks material containing tank body 9 to be realized rising and the decline process.
The effect of horizontal feed dolly 8 be exactly carry material containing tank body 9 under the traction of draw gear 19 on horizontal rail parallel motion, wherein draw gear 19 comprises traction electric machine and wirerope, and traction electric machine is arranged on the second end of horizontal channel 2 and is connected with horizontal feed dolly 8 by carrying cable.
Shown in Fig. 3 a to Fig. 3 c, horizontal feed dolly 8 comprises trolley platform 81, the second roller 82, vehicle-mounted pillar 83 and vehicle-mounted guide rail 84.Wherein the second roller 82 is arranged on the bottom of trolley platform 81 and suitable with horizontal guide rail 7; Vehicle-mounted pillar 83 is arranged on and is used for carrying material containing tank body 9 on the trolley platform 81; Vehicle-mounted guide rail 84 relatively is arranged on the both sides midway location of trolley platform 81 and with upright guide rail 18 and engages.Vehicle-mounted guide rail 84 is used in the horizontal transport process position of material containing tank body 9 being limited, and the relevant position of simultaneously material containing tank body 9 is provided with the roller suitable with vehicle-mounted guide rail 84.
Because the midway location both sides of trolley platform 81 are provided with vehicle-mounted guide rail 84, when horizontal feed dolly when 2 first end is moved horizontally to the second end from the horizontal channel, just in time enter Vertical Channel 15 under, vehicle-mounted guide rail 84 on this moment horizontal feed dolly 8 just in time with Vertical Channel 15 in upright guide rail 18 stable engagement, material containing tank body 9 can run to the desired position with security and stability under the traction of the wirerope of bont 13 like this.
Shown in Fig. 4 a to Fig. 4 c, material containing tank body 9 comprises tank body body 91, the 3rd roller 92, hook shackle 93, inlet point 94 and discharge port 95.Wherein inlet point 94 is arranged on the top of tank body body 91, discharge port 95 is arranged on the bottom of tank body body 91, the tank body journal stirrup is along the outer circumferential side setting of the discharge port 95 of tank body body 91 bottoms, the 3rd roller 92 is arranged on the both sides of tank body body 91, hook shackle 93 is positioned at the outer circumferential side at the top of tank body body 91, is used for being connected with hook part 16.Because it is irregular to be positioned at the planform of discharge port 95 of material containing tank body 9 bottoms, as be terminal oblique flow pipe mode for fan-shaped shelves cap, material containing tank body 9 directly can't be placed on the horizontal small car 8 like this.The utility model is supported on by the tank body journal stirrup on the vehicle-mounted pillar 83 of horizontal small car 8 by the tank body journal stirrup is set, and wherein the trolley platform 81 of horizontal small car 8 is the structure of hollow, can hold so outstanding irregular discharge port 95.In upright guide rail 18, carry out vertical motion by hook part 16, so it possesses the structure of effectively agreeing with horizontal feed dolly 8, hook part 16 and three equipment of track.
Consider that material containing tank body 9 is used for depositing high-temperature material, material containing tank body 9 inner liner abrasive resistant refractory materiaies of the present utility model are to satisfy the requirement of heat-resisting quantity and resistance to abrasion.This material containing tank body 9 is used for high-temperature material is loaded and driving device is isolated, reduced the requirement to the driving device heat-resisting quantity, while is according to the characteristics of charging and discharging, material containing tank body 9 adopts inlet points 94 to be arranged on the structure that top and discharge port 95 are arranged on the bottom, has made things convenient for the process of charging and discharging.Simultaneously material containing tank body 9 has inlet point 94 and the discharge port 95 of different structure, inlet point 94 adopts the cover plate mode, when material containing tank body 9 when high-temperature material gives discharge port 95 place of equipment 5, cover plate and feed arrangement 4 machineries agree with, assurance cover plate and material give the discharging action of equipment 5 to carry out simultaneously, after charging is finished, the playback of cover plate automatic-sealed.The discharge port 95 of material containing tank body 9 can be straight tube structure, also can be the oblique flow tubular construction, the end of oblique flow pipe is fan-shaped shelves cap, the angle of oblique flow pipe has specific (special) requirements, guarantee after 9 liftings of material containing tank body put in place, the inlet point machinery of fan-shaped shelves cap and material reception facilities 11 agrees with, and has guaranteed that the inlet point of fan-shaped shelves cap and material reception facilities 11 moves simultaneously, sealing playback after discharging is finished.The outside of material containing tank body 9 is provided with hook shackle 93, can be hooked by hook part 16 to realize rising and the decline process.The two sides of material containing tank body 9 respectively are provided with the 3rd roller 92, guarantee material containing tank body 9 stable rising and decline in Vertical Channel.
According to a kind of exemplary embodiment of the present utility model, comprise that also the material of the first end that is arranged on horizontal channel 2 gives equipment 5, gives the feed arrangement 4 that equipment 5 is connected with material; The device for discharging 10 that is arranged on the material reception facilities 11 of Vertical Channel 15 upper ends and is arranged on material reception facilities 11 1 sides.Feed arrangement 4 is arranged on the first end of horizontal channel 2, is used for giving materials in the equipment 5 with material and packs in the material containing tank body 9; Device for discharging 10 is used for control material reception facilities 11, and the material in the material containing tank body 9 is entered in the material reception facilities 11 smoothly.Periphery at the position that is connected seals.
In the transport systems of material, the first end of horizontal channel 2 gives equipment 5 with material and is communicated with, the top of Vertical Channel 15 is communicated with material reception facilities 11, for the requirement of level and lifter motion, design the reliable and stable operation that two kinds of different track pattern guarantee inner horizontal transport trolley 8 and material containing tank body 9 in the passage.
In horizontal feed and vertical-lifting device, ground double track form is adopted in horizontal channel 2, and its mode is identical with the railway traffic track, and the track two ends are provided with postive stop baffle, in order to prevent horizontal feed dolly 8 action excess.Vertical Channel 15 adopts two-sided single track form, and a single track is namely respectively arranged on two relative planes, and the single track bottom engages with horizontal feed dolly 8 local tracks.
According to a kind of preferred implementation of the present utility model, as shown in Figure 1, also comprise charging weighting apparatus 3, charging weighting apparatus 3 comprises that LOAD CELLS, the wirerope of falling the Y shape reach movable track, wherein, movable guiding rail and horizontal guide rail 7 are flexibly connected; The first end that the wirerope of falling the Y shape is positioned at the upper end is connected on the LOAD CELLS, and the second end that is positioned at the lower end is connected with two movable guiding rails respectively with the 3rd end.Charging weighting apparatus 3 is used for the charge weight of weighing material containing tank body 9.
Because internal system has high temperature and combustible and poisonous gas, so LOAD CELLS is external, the first end that the wirerope of falling the Y shape is positioned at the upper end is connected on the outside LOAD CELLS, two branches that are positioned at the lower end link to each other with movable horizontal guide rail, wirerope two branches that link to each other with the horizontal guide rail adjustment of can stretching respectively is to guarantee that track is as same plane.Movable guiding rail and horizontal trapped orbit are bolted, so that connecting portion can be rotated.Its mode of operation is, when dolly after movable track comes to a complete stop because gravity can make movable track move downwards, the wirerope of action pulling downwards conveys to LOAD CELLS with gravity, to realize the weight monitoring of LOAD CELLS.
Further preferably, the brake equipment 12 and the air exhauster 14 that also comprise the top that is arranged on Vertical Channel 15.The effect of brake equipment 12 mainly is to prevent that danger from appearring in material containing tank body 9 in the process that rises or descend, when going wrong in the process that is rising or descending, open brake equipment 12 material containing tank body 9 is suspended in the air, cause danger in order to avoid material containing tank body 9 falls.The Main Function of air exhauster 14 is poisonous or fire gasess in the escape route termly.
Position for real-time detection level transport trolley 8 also is provided with mode bit point equipment 17 on the horizontal channel 2 He on the Vertical Channel 15.Namely arrange some limit sensors at horizontal guide rail 7, in order to the position of level monitoring transport trolley 8; Be furnished with some limit sensors at upright guide rail 18 equally, in order to monitor the position of material containing tank body 9.In horizontal channel 2 is included in whole feedway with Vertical Channel 15.
According on the other hand of the present utility model, a kind of material conveying method is provided, has may further comprise the steps: the second end of Vertical Channel 15 belows that are positioned at material-transporting system delivered to material containing tank body 9 by the horizontal feed dolly 8 that utilizes material-transporting system from the first end transportation of the horizontal channel 2 of material-transporting system; And with material containing tank body 9 the second end of 2 is promoted to the top of Vertical Channel 15 from the horizontal channel; Wherein the space of horizontal channel 2 and Vertical Channel 15 formation is airtight.
The course of conveying of material is as follows: material is packed into by feed arrangement 4 in the material containing tank body 9, wherein charge weight is by 3 controls of charging weighting apparatus, after feed arrangement 4 cuts out, carrying the horizontal feed dolly 8 of material containing tank body 9 under the traction of the wirerope of draw gear 19, move in horizontal channel 2 along horizontal guide rail 7, its speed is adjustable, during the motion conditions of mode bit point equipment 17 Real-Time Monitoring horizontal feed dollies 8.After dolly stops, guaranteeing that hook part 16 is accurately in place.Start bont 13, material containing tank body 9 breaks away from horizontal feed dolly 8 and rises along upright guide rail 18 in Vertical Channel 15, lifting process mode bit Real-Time Monitoring and speed are adjustable, after accurately putting in place, opens material containing tank body 9 device for discharging 10, after material is unsnatched, close device for discharging 10, material containing tank body 9 is put down and accurately fall into the assigned address of horizontal feed dolly 8, afterwards horizontal feed dolly 8 is back to reference position.Unexpected as finding in lifting process, will open brake equipment 12 according to different situations.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (11)
1. material-transporting system, comprise horizontal channel (2), Vertical Channel (15), material containing tank body (9) and be used for carrying the horizontal feed dolly (8) of described material containing tank body (9), it is characterized in that, described horizontal channel (2) and described Vertical Channel (15) are connected, and the inner space in described horizontal channel (2) and the described Vertical Channel (15) forms whole confined space.
2. delivery system according to claim 1; it is characterized in that; described horizontal channel (2) is provided with inert gas protection device (6), makes in described horizontal channel (2) and the described Vertical Channel (15) by described inert gas protection device (6) to be filled with unreactable gas.
3. delivery system according to claim 2 is characterized in that,
Described inert gas protection device (6) is arranged on the position of the close first end of described horizontal channel (2), described Vertical Channel (15) be arranged on described horizontal channel (2) near the position of the second end and extend upward.
4. delivery system according to claim 1 is characterized in that,
The upper end of the first end of described horizontal channel (2) and/or the second end and/or described Vertical Channel (15) is provided with gas-detecting device (1).
5. delivery system according to claim 1 is characterized in that,
Be provided with in the described horizontal channel (2) for the mobile horizontal guide rail (7) of described horizontal feed dolly (8), and be arranged on the second end of described horizontal channel (2) and in order to draw the draw gear (19) of described horizontal feed dolly (8);
Be provided with upright guide rail (18) in the described Vertical Channel (15) and be arranged on the bont (13) on described upright guide rail (18) top and be wrapped in described bont (13) upper and be used for promoting the wirerope of described material containing tank body (9).
6. delivery system according to claim 5, it is characterized in that, also be provided with hook part (16) on the described wirerope, the hook (162) that described hook part (16) comprises crossbeam (161) and is arranged on described crossbeam (161) lower end, the both sides of described crossbeam (161) are provided with first roller (163) suitable with described upright guide rail (18).
7. delivery system according to claim 5 is characterized in that, described horizontal feed dolly (8) comprising:
Trolley platform (81);
The second roller (82) is arranged on the bottom of described trolley platform (81) and suitable with described horizontal guide rail (7);
Vehicle-mounted pillar (83), it is upper for carrying described material containing tank body (9) to be arranged on described trolley platform (81);
Vehicle-mounted guide rail (84) relatively is arranged on the both sides midway location of described trolley platform (81) and with described upright guide rail (18) and engages.
8. delivery system according to claim 1 is characterized in that, also comprises:
The material that is arranged on the first end of described horizontal channel (2) gives equipment (5), gives the equipment feed arrangement that (5) are connected (4) with described material;
Be arranged on the material reception facilities (11) of described Vertical Channel (15) upper end and the device for discharging (10) that is arranged on described material reception facilities (11) one sides.
9. delivery system according to claim 5 is characterized in that, also comprises charging weighting apparatus (3), and described charging weighting apparatus (3) comprises LOAD CELLS, the wirerope of falling the Y shape and movable guiding rail, wherein,
Described movable guiding rail and described horizontal guide rail (7) are flexibly connected;
The first end that the described wirerope of falling the Y shape is positioned at the upper end is connected on the described LOAD CELLS, and the second end that is positioned at the lower end is connected with two described movable guiding rails respectively with the 3rd end that is connected the lower end.
10. delivery system according to claim 1 is characterized in that, also comprises brake equipment (12) and the air exhauster (14) on the top that is arranged on described Vertical Channel (15).
11. delivery system according to claim 1 is characterized in that, described horizontal channel (2) upward and on the described Vertical Channel (15) are provided with mode bit point equipment (17) equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511791 CN202784700U (en) | 2012-09-29 | 2012-09-29 | Material conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511791 CN202784700U (en) | 2012-09-29 | 2012-09-29 | Material conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202784700U true CN202784700U (en) | 2013-03-13 |
Family
ID=47812012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511791 Expired - Lifetime CN202784700U (en) | 2012-09-29 | 2012-09-29 | Material conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202784700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849424A (en) * | 2012-09-29 | 2013-01-02 | 神华集团有限责任公司 | Material conveying system and method |
| CN109109879A (en) * | 2018-08-06 | 2019-01-01 | 中国恩菲工程技术有限公司 | Rail mounted batch can transport vehicle |
-
2012
- 2012-09-29 CN CN 201220511791 patent/CN202784700U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849424A (en) * | 2012-09-29 | 2013-01-02 | 神华集团有限责任公司 | Material conveying system and method |
| CN109109879A (en) * | 2018-08-06 | 2019-01-01 | 中国恩菲工程技术有限公司 | Rail mounted batch can transport vehicle |
| CN109109879B (en) * | 2018-08-06 | 2024-03-19 | 中国恩菲工程技术有限公司 | Rail-mounted bucket transport vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |