CN106276125A - Haulage drum, haulage drum device and trailer system - Google Patents
Haulage drum, haulage drum device and trailer system Download PDFInfo
- Publication number
- CN106276125A CN106276125A CN201610862717.6A CN201610862717A CN106276125A CN 106276125 A CN106276125 A CN 106276125A CN 201610862717 A CN201610862717 A CN 201610862717A CN 106276125 A CN106276125 A CN 106276125A
- Authority
- CN
- China
- Prior art keywords
- haulage drum
- steel wire
- stopper slot
- cylinder
- wire rope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
- B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
The invention discloses a kind of haulage drum, haulage drum device and trailer system.Haulage drum includes rotary shaft (10) and is fixedly installed in the cylinder (20) of this rotary shaft (10) coaxially, being provided with stopper slot (30) on this cylinder (20), this stopper slot (30) is formed along the circumference of described cylinder (20) and is positioned at the middle part that described cylinder (20) is in axial direction gone up.The middle part of the haulage drum that the present invention provides is provided with stopper slot, during traction conveyer belt, the steel wire rope being connected to conveyer belt is positioned at above-mentioned stopper slot, to prevent conveyer belt sideslip in distraction procedure, thus general staff only needs two people just can complete the loading and unloading of conveyer belt, and the damage to the haulage drum of conveyer also greatly reduces, the work efficiency of the mounting or dismounting of conveyer belt is greatly improved.
Description
Technical field
The present invention relates to transportation system, in particular it relates to the high haulage drum of a kind of propulsive efficiency, haulage drum device with
And trailer system.
Background technology
In daily life and production, there is substantial amounts of material to need conveying, for reducing labor intensity, improve work and produce
Rate, need to use different conveying equipments to complete the conveying of material, use automation equipment to carry out continuously the most aborning
Ground conveying, and multiple units are organically connected, thus form production line.
Such as, in thermal power plant, conveyer (also known as feeder) is used to carry coal continuously to boiler.Coal handling equipment
In core component be conveyer belt.Conveyer belt is divided into steel cable core conveying belt and Polyester conveyor belt, in order to supply coal continuously, needs
It is used in series up to a hundred conveyers, and the conveyer belt of some conveyer is in high-altitude (such as, distance ground more than 50m) fortune
OK.
In actual condition, conveyer belt needs frequently to change, and the most conventional conveyer belt replacing options is for (with conveying of moving out
Illustrate as a example by band): 1, at head cylinder or stern roll, cut off conveyer belt；2, two steel wire ropes are connected conveyer belt
The center at the two ends cut；3, utilize hoist engine or loader to draw one of them steel wire rope, then conveyer belt is at conveyer
On through head cylinder, carrying roller, stern roll and by conveyer of moving out.
But, in above-mentioned distraction procedure, conveyer belt is easy to sideslip and scratches the glue surface of head cylinder and stern roll,
In order to prevent belt deflection, at least six people is needed constantly to push conveyer belt to center at cylinder, to prevent conveyer belt
Friction is occurred to damage conveyer belt with conveyer steel construction piece.It is obvious that the replacing operation of conveyer belt is wasted time and energy in the past, dangerous
Property big, largely effect on maintenance efficiency.
Summary of the invention
It is an object of the invention to provide a kind of haulage drum being prevented from sideslip.
A further object of the present invention is to provide a kind of draws the high haulage drum device of work efficiency and trailer system.
In order to achieve the above object, the present invention provides a kind of haulage drum, and this haulage drum includes rotary shaft and coaxially
Being fixedly installed in the cylinder of this rotary shaft, this cylinder is provided with stopper slot, this stopper slot is along the circumference of described cylinder
Formed and be positioned at the middle part that described cylinder is in axial direction gone up.
Preferably, the outer peripheral face of described cylinder is formed with project radially outwardly two along described cylinder convex
Edge, these two flange intervals arrange and form described stopper slot between two described flanges.
Preferably, the outer peripheral face of the described cylinder of the both sides of two described flanges is respectively formed with conveyer belt spacing
Edge, the radial dimension of the spacing edge of this conveyer belt is more than the radial dimension of described flange.
Preferably, the middle part of described cylinder is recessed and form described stopper slot to the axis direction of described cylinder.
Preferably, described cylinder can be one.
Preferably, described cylinder can be two, the end surfaces relative to each other of two described cylinders arrange and
Form described stopper slot.
Preferably, described stopper slot width in axial direction becomes larger radially outward direction.
The present invention provides again a kind of haulage drum device, and this haulage drum device includes frame, wherein, and can in described frame
It is rotatably mounted the haulage drum that the present invention provides.
The present invention provides again a kind of trailer system, this trailer system include conveyer, first hoist, second hoist,
First steel wire rope and the second steel wire rope, described first steel wire rope the first end is connected with described first hoist, described second steel
First end of cord is connected with described second hoist, and described conveyer is provided with conveyer belt, the of described first steel wire rope
Second end of two ends and described second steel wire rope is connected to the two ends of described conveyer belt, it is characterised in that described traction system
System also includes the haulage drum device that the present invention provides, described first steel wire rope or described second steel wire rope warp in distraction procedure
Cross the described stopper slot of described haulage drum.
Preferably, described haulage drum can be two, described first steel wire rope in distraction procedure through described in one
The stopper slot of haulage drum, described second steel wire rope passes through the stopper slot of another described haulage drum in distraction procedure.
By technique scheme, the middle part of the haulage drum that the present invention provides is provided with stopper slot, at traction conveyer belt
During, the steel wire rope being connected to conveyer belt is fallen in above-mentioned stopper slot, to prevent conveyer belt sideslip in distraction procedure,
Thus, only need two staff just can complete the loading and unloading of conveyer belt, and the damage of the haulage drum to conveyer
Also greatly reducing, the work efficiency of the mounting or dismounting of conveyer belt is greatly improved.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the first embodiment of the haulage drum that the present invention provides；
Fig. 2 is the structural representation of the second embodiment of the haulage drum that the present invention provides；
Fig. 3 is the left view of the haulage drum of Fig. 1；
Fig. 4 is the structural representation of the trailer system that the present invention provides.
Description of reference numerals
10 rotary shaft 20 cylinders
30 stopper slot 40 frames
50 first steel wire rope 60 second steel wire ropes
The 70 bearing 80 spacing edge of conveyer belt
100 first haulage drum 200 second haulage drum 300 conveyer belts
400 conveyer 410 head cylinders
420 stern roll 430 carrying rollers
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
In the present invention, in the case of illustrating on the contrary, the noun of locality of use such as " radially ", " axially " refer respectively to
The radial direction of the rotary shaft of haulage drum and axis direction.
The present invention provides a kind of haulage drum, and as depicted in figs. 1 and 2, the haulage drum of the present invention includes rotary shaft 10 He
Being fixedly installed in the cylinder 20 of this rotary shaft 10 coaxially, this rotary shaft 10 and cylinder 20 can be integral pieces, it is also possible to
Being fixing two parts connected, in the course of the work, cylinder 20 rotates with rotary shaft 10 for center of rotation, conveyer
Conveyer belt 300 move on the outer peripheral face of cylinder 20.Wherein, cylinder 20 is provided with stopper slot 30, this stopper slot 30
Circumference along described cylinder 20 is formed and is positioned at the middle part that cylinder 20 is in axial direction gone up.This stopper slot 30 is used for accommodating use
In the steel wire rope of traction conveyer belt, with limit steel wire rope in the movement of the axial direction of cylinder 20.In other words, steel wire rope
In distraction procedure, only fall in stopper slot 30, thus the conveyer belt 300 being connected to steel wire rope will not sideslip.
Hereinafter, the using method of the haulage drum of the present invention is simply introduced.
Before the using method of description haulage drum, the general structure of conveyer is first described.As shown in Figure 4, conveying
Machine 400 includes the carrying roller 430 as body, the head being positioned at described carrying roller 430 and the head cylinder 410 of afterbody and stern roll
420 and hold carrying roller 430, head cylinder 410, stern roll 420 and for the conveyer belt 300 of transported material, by conveying
Rotary motion with 300 carrys out transported material.
On this architecture basics, when conveyer belt 300 changed by needs, first at head cylinder 410 or stern roll 420
Cutting off conveyer belt, afterwards by one end of two steel wire ropes, the i.e. first steel wire rope 50 and the second steel wire rope 60 are connected to conveying
The center at the two ends of the incision with 300, then after utilize hoist engine or loader to draw the first steel wire rope 50 or the second steel wire
The other end of rope 60, then conveyer belt 300 is moved out through head cylinder 410, carrying roller 430, stern roll 420 on a conveyor
Conveyer.During drawing the first steel wire rope 50 or the second steel wire rope 60, in order to guide conveyer belt 300 to move out conveyer,
The head cylinder 410 of conveyer 400 or stern roll 420 side are positioned apart from the haulage drum of the present invention with conveyer 400.
In above-mentioned distraction procedure, the first steel wire rope 50 or the second steel wire rope 60 is made to be positioned at the stopper slot 30 of haulage drum of the present invention
In, make the first steel wire rope 50 or the second steel wire rope 60 all the time without departing from stopper slot 30 simultaneously.Owing to stopper slot 30 is positioned at traction rolling
The middle part of cylinder, the conveyer belt 300 being connected to steel wire rope does not deviates by center and can be drawn along carrying roller 430 all the time,
This greatly reduces the manpower of regulation conveyer belt 300 position, also shorten the working time of traction, decrease haulage drum simultaneously
Damage.
For the concrete structure of stopper slot 30, as long as being prevented from conveyer belt 300 sideslip, the present invention does not do special limit
System.Hereinafter, the present invention provides two kinds of preferred implementations of stopper slot 30.
As it is shown in figure 1, a kind of preferred structure of stopper slot 30 is: be formed along institute on the outer peripheral face of described cylinder 20
Stating project radially outwardly two flanges of cylinder 20, these two flange intervals arrange and form limit between two described flanges
Position groove 30.
Meanwhile, in order to prevent conveyer belt 300 impaired, it is highly preferred that the periphery of the cylinder 20 in the both sides of two flanges
Being respectively formed with the spacing edge of conveyer belt 80 on face, the radial dimension of the spacing edge of this conveyer belt 80 is more than the radial ruler of described flange
Very little.When involving or lead into conveyer belt 300, the surface of conveyer belt 300 is made to be positioned on the outer peripheral face of the spacing edge of conveyer belt 80, the company of making
The steel wire rope being connected on conveyer belt 300 is positioned at stopper slot 30.When designing the spacing edge 80 of conveyer belt, it is ensured that conveyer belt is spacing
Contact area between edge 80 and conveyer belt 300 is abundant, to avoid conveyer belt 300 to depart from haulage drum.
As in figure 2 it is shown, the another kind of preferred structure of stopper slot 30 is: at the middle part of cylinder 20 to the axle center of cylinder 20
Direction is recessed and forms stopper slot 30.
Wherein, cylinder 20 can be one, and form the stopper slot 30 of up concave type at the middle part of cylinder 20, but not
Being limited to this, such as, cylinder 20 can be two, and the end surfaces relative to each other of two cylinders 20 arranges and formed spacing
Groove 30.It should be noted that in the present invention, the example forming a stopper slot 30 at the middle part of cylinder 20 is only illustrated
Son, but the invention is not restricted to this, if when one end of conveyer belt 300 connection has two or more steel wire rope, cylinder 20
On in axial direction can form the stopper slot 30 of corresponding number and position needs to be arranged to allow conveyer belt 300 in traction
Move on cylinder, and each steel wire rope falls in stopper slot 30.
Furthermore it is preferred that the width that stopper slot 30 is in axial direction becomes larger radially outward direction, this structure
Be conducive to making steel wire rope fall all the time in distraction procedure in stopper slot 30 without deviating from stopper slot 30.
It addition, the present invention provides again a kind of haulage drum device, as shown in Figure 4, this haulage drum device includes frame 40,
The haulage drum that the present invention provides it is rotatably mounted with, such as, as it is shown on figure 3, haulage drum can pass through in this frame 40
Bearing 70 is arranged in frame 40.When loading and unloading conveyer belt 300, by the rotation of haulage drum, conveyer belt 300 is pulled into or leads
Go out, by the stopper slot 30 on haulage drum, be connected to the steel wire rope on conveyer belt 300 and fall all the time in stopper slot 30 so that
Conveyer belt 300 not sideslip, whole towage saves time and laborsaving.
It addition, the present invention provides again a kind of trailer system, as shown in Figure 4, this trailer system includes conveyer 400, first
Hoist engine (not shown), second hoist (not shown), the first steel wire rope 50 and the second steel wire rope 60, the first steel wire rope 50
One end is connected with first hoist, and the first end of the second steel wire rope 60 is connected with second hoist, conveyer 400 is provided with defeated
Sending band 300, the second end of the first steel wire rope 50 and the second end of the second steel wire rope 60 are connected to the two ends of conveyer belt 300,
Wherein, trailer system also includes that the haulage drum device that the present invention provides, the first steel wire rope 50 or the second steel wire rope 60 are in traction
During through the stopper slot 30 of haulage drum.
It is highly preferred that haulage drum is two, i.e. as shown in Figure 4, the vertical direction of frame 40 sets gradually first
Haulage drum 100 and the second haulage drum 200, the first haulage drum 100 and the second haulage drum 200 are provided with spacing
Groove.In distraction procedure, the first steel wire rope 50 falls at the stopper slot of the first haulage drum 100, and the second steel wire rope 60 falls second
The stopper slot of haulage drum 200 so that the two ends of conveyer belt 300 are spacing by steel wire rope centering, and arranges a haulage drum
Compare, prevent the better of sideslip.
On the basis of being provided with two haulage drums, will be described below conveyer belt involves process.
When needs dismantle conveyer belt 300 from conveyer 400, first cut off at head cylinder 410 or stern roll 420
Conveyer belt, afterwards by two steel wire ropes, the i.e. first steel wire rope 50 and the second steel wire rope 60 are connected to the incision of conveyer belt 300
The center at two ends, the other end of the first steel wire rope 50 is crimped onto in first hoist, the other end volume of the second steel wire rope 60
Bent in second hoist, now start first hoist and second hoist, first hoist carries out rope closing operation, volume Two
The machine of raising carries out line laying work, and now conveyer belt 300 can move along with the take-up campaign of the first steel wire rope 50, until conveyer belt
300 on a conveyor through head cylinder 410, carrying roller 430, stern roll 420 and conveyer 400 of being moved out.It is of course also possible to
Being that first hoist carries out putting rope operation, second hoist carries out rope closing operation, and the most now conveyer belt 300 can be along with the second steel wire
Rope 60 take-up campaign and move.In above-mentioned distraction procedure, under original state, the first steel wire rope 50 and 60 points of the second steel wire rope
Be not positioned at stopper slot and the stopper slot of the second haulage drum 200 of the first haulage drum 100, when involve process continue until
When connection has the conveyer belt 300 of the first steel wire rope 50 side to be drawn off to the first haulage drum 100, due to the second steel wire rope 60 also
Being positioned at the stopper slot of the second haulage drum 200, therefore conveyer belt 300 will not sideslip.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, technical scheme can be carried out multiple letter
Monotropic type, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy illustrates the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. haulage drum, this haulage drum includes rotary shaft (10) and is fixedly installed in the cylinder of this rotary shaft (10) coaxially
(20), it is characterised in that being provided with stopper slot (30) on this cylinder (20), this stopper slot (30) is along described cylinder (20)
Circumference is formed and is positioned at the middle part that described cylinder (20) is in axial direction gone up.
Haulage drum the most according to claim 1, it is characterised in that be formed on the outer peripheral face of described cylinder (20)
Along project radially outwardly two flanges of described cylinder (20), these two flange intervals are arranged and between two described flanges
Form described stopper slot (30).
Haulage drum the most according to claim 2, it is characterised in that at the described cylinder of the both sides of two described flanges
(20) being respectively formed with the spacing edge of conveyer belt (80) on outer peripheral face, the radial dimension of the spacing edge of this conveyer belt (80) is more than described
The radial dimension of flange.
Haulage drum the most according to claim 1, it is characterised in that the middle part of described cylinder (20) is to described cylinder
(20) axis direction is recessed and forms described stopper slot (30).
Haulage drum the most according to claim 4, it is characterised in that described cylinder (20) is one.
Haulage drum the most according to claim 4, it is characterised in that described cylinder (20) is two, two described circles
The end surfaces relative to each other of cylinder (20) arranges and forms described stopper slot (30).
Haulage drum the most according to claim 1, it is characterised in that described stopper slot (30) width edge in axial direction
Radially outward direction becomes larger.
8. haulage drum device, this haulage drum device includes frame (40), it is characterised in that described frame (40) is upper rotatable
Haulage drum as claimed in any of claims 1 to 7 is installed.
9. trailer system, this trailer system includes conveyer (400), first hoist, second hoist, the first steel wire rope (50)
And second steel wire rope (60), described first steel wire rope (50) first end is connected with described first hoist, described second steel wire
First end of rope (60) is connected with described second hoist, and described conveyer (400) is provided with conveyer belt (300), and described the
Second end of one steel wire rope (50) is connected to the two of described conveyer belt (300) with the second end of described second steel wire rope (60)
End, it is characterised in that described trailer system also includes haulage drum device according to claim 8, described first steel wire
Rope (50) or described second steel wire rope (60) in distraction procedure through the described stopper slot (30) of described haulage drum.
Trailer system the most according to claim 9, it is characterised in that described haulage drum is two, described first steel wire
Rope (50) is through the stopper slot of a described haulage drum in distraction procedure, and described second steel wire rope (60) is in distraction procedure
Stopper slot through another described haulage drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862717.6A CN106276125B (en) | 2016-09-28 | 2016-09-28 | Haulage drum, haulage drum device and trailer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862717.6A CN106276125B (en) | 2016-09-28 | 2016-09-28 | Haulage drum, haulage drum device and trailer system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106276125A true CN106276125A (en) | 2017-01-04 |
| CN106276125B CN106276125B (en) | 2018-11-27 |
Family
ID=57715592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610862717.6A Active CN106276125B (en) | 2016-09-28 | 2016-09-28 | Haulage drum, haulage drum device and trailer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106276125B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336966A (en) * | 2017-07-18 | 2017-11-10 | 北京兆维智能装备有限公司 | Anti-deviation belt system |
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| WO1998056698A1 (en) * | 1997-06-12 | 1998-12-17 | Avery Dennison Corporation | Conveyor device for flat material and flat belt for this device |
| JP2001048332A (en) * | 1999-08-05 | 2001-02-20 | Nitta Ind Corp | Conveying pulley |
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| CN103738661A (en) * | 2013-12-27 | 2014-04-23 | 神华集团有限责任公司 | Conveying belt change method for conveyor |
| CN103935689A (en) * | 2014-04-30 | 2014-07-23 | 重庆大学 | Belt conveyor capable of bending horizontally |
| CN206050812U (en) * | 2016-09-28 | 2017-03-29 | 中国神华能源股份有限公司 | Haulage drum, haulage drum device and trailer system |
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2016
- 2016-09-28 CN CN201610862717.6A patent/CN106276125B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998056698A1 (en) * | 1997-06-12 | 1998-12-17 | Avery Dennison Corporation | Conveyor device for flat material and flat belt for this device |
| JP2001048332A (en) * | 1999-08-05 | 2001-02-20 | Nitta Ind Corp | Conveying pulley |
| CN102167215A (en) * | 2010-02-27 | 2011-08-31 | 襄樊金鹰轨道车辆有限责任公司 | Belt conveying device for preventing belt from deviating |
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| CN107336966A (en) * | 2017-07-18 | 2017-11-10 | 北京兆维智能装备有限公司 | Anti-deviation belt system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106276125B (en) | 2018-11-27 |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: Guoneng Huanghua Port Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: SHENHUA HUANGHUA PORT Co.,Ltd. |