CN106348200B - Centering swing mechanism and centering slewing equipment - Google Patents
Centering swing mechanism and centering slewing equipment Download PDFInfo
- Publication number
- CN106348200B CN106348200B CN201610795376.5A CN201610795376A CN106348200B CN 106348200 B CN106348200 B CN 106348200B CN 201610795376 A CN201610795376 A CN 201610795376A CN 106348200 B CN106348200 B CN 106348200B
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- Prior art keywords
- centering
- ring
- swing mechanism
- rolling
- rotating ring
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of centering swing mechanism, centering ring and rotating ring including concentric socket, centering ring and rotation interannular are equipped with the first rolling assembly, and rotating ring is rotated using rotating ring internal diameter as track around centering ring under the first rolling assembly guiding.Inventor is based on studying pioneering proposition product of the present invention for many years, and specifically, centering revolution, translation or elevating movement can be achieved at the same time in centering swing mechanism and device provided by the invention, and bearing effect can have been limited to centering portion load-bearing.
Description
Technical field
The present invention relates to a kind of swing mechanisms, are specifically related to the device of a kind of feel relieved swing mechanism and application, belong to weight
Work machinery field.
Background technique
Large scale equipment in the prior art, such as the combination bucket-wheel stacker reclaimer in stacker-reclaimer as can overcoming existing equipment (bridge
Formula stacker-reclaimer) can not carry out this disadvantage that works across stock ground, then must increase the function of its revolution and lifting, change speech
It, needs the executing agency of following function:
(1) itself vertical lift or horizontal movement；
(2) itself rotary motion；
(3) the common revolution as carrying completion assembly workpiece or other equipment and vertical lift or horizontal movement；
(4) axial carrying；
(5) when being horizontally mounted, the very big torque of radial force and vertical axis direction can be born simultaneously, and bearing capacity is superpower；
(6) each direction of motion moves into rolling pair.
Therefore, translation or lifting and centering revolution and its corresponding dress can be met simultaneously for large-scale heavy industry equipment
It sets or structure still belongs to blank at present, belong to the core technology difficult point of the art.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, inventor is based on studying pioneering proposition product of the present invention for many years, specifically
For, the invention discloses a kind of centering swing mechanism with, centering revolution, translation or elevating movement can be achieved at the same time, and can be right
Centering portion load-bearing has limited bearing effect.
Foregoing invention purpose can be achieved through the following technical solutions:
Centering swing mechanism, centering ring and rotating ring including concentric socket, centering ring and rotation interannular are equipped with first
Rolling assembly, centering ring, rotating ring and the coaxial arrangement of the first rolling assembly center line, rotating ring is under the first rolling assembly guiding
It is rotated using rotating ring internal diameter as track around centering ring.
Preferably, the first rolling assembly is made of multiple first rolling members, and the first rolling member includes the first idler wheel, first
Seat and the first shaft stool, the first idler wheel are fixedly connected with the outer surface of centering ring through the first support, the first idler wheel and rotating ring it is interior
Plane tangent.
It is highly preferred that being connected between the first idler wheel and the first support through the first shaft stool.
Preferably, centering ring is made of the first centering ring, the second centering ring and centering ring connection frame, the first centering ring and
Two centering rings are symmetrical arranged and link into an integrated entity through centering ring connection frame.
It is highly preferred that the first centering ring and the second centering ring outer surface are equipped with multiple first rolling members, to guarantee to rotate
The rotary stability of ring.
Preferably, rotating ring is divided into and the first rotating ring and the second rotating ring.
It is highly preferred that the first centering ring and the first rotating ring concentric are socketed, the second centering ring and the second rotating ring are the same as circle
The inner surface of heart socket, the first rotating ring and the second rotating ring ring body is mutually cut into rotary rail with the first idler wheel.
Preferably, the ring of the inner surface and/or the first centering ring and the second centering ring of the first centering ring and the second centering ring
Body end face is equipped with the second rolling assembly, for realizing entire centering swing mechanism through the second rolling assembly while rotary motion
It moves vertically under guiding along gyratory directions.
It is highly preferred that the second rolling assembly is made of multiple second rolling members, the second rolling member is by the second idler wheel, the second axis
Support, the second support composition.As a kind of preferable embodiment, the first centering ring and the second centering ring are not connect with centering ring
The both ends of frame connection add multiple second rolling members, to guarantee stationarity when entire centering swing mechanism movement.
It preferably, further include a third rolling assembly, for the axial limiting of rotating ring, third rolling assembly is by multiple
Three rolling members composition, third rolling member include third pair of rollers, shaft stool to and third support, third pair of rollers distinguish warp beam branch
Seat is to independent connection third support, third support being fixedly connected outside the ring body of the first centering ring and the second centering ring independently
Surface, the first rotating ring of third pair of rollers sandwiched rotating ring and the second rotating ring ring body both ends.
It is highly preferred that third idler wheel is taper cone pulley；Preferably, the nearly centering ring of taper cone pulley smaller part.
As a kind of preferable embodiment, rotating ring is located between taper cone pulley, in other words, the first rotating ring and second
Two end faces of rotating ring are respectively the track of third pair of rollers, the taper cone pulley of third rolling member and are matched therewith rotary annular
At rolling pair, so that so that the centering swing mechanism can do rotary motion when realizing axial movement simultaneously.
It is selected by rotational speed, is preferably bored as one kind more preferably embodiment, taper of the taper taper cone pulley of taper cone pulley
Shape wheel speed angle bus is intersected in the centre of gyration point angulation of the centering swing mechanism；To guarantee third rolling assembly
The linear speeds tapers such as rolling circle is are, it can be achieved that the centering swing mechanism big small end speed angle in rotation is identical to guarantee the steady of revolution
Qualitative and load-bearing rigidity.
As a kind of preferable embodiment, for the stability for guaranteeing movement, the first rolling assembly, the second rolling assembly,
The center line of third rolling assembly is coaxially disposed, and the first rolling assembly, the second rolling assembly, third rolling assembly are circumferentially
It is evenly arranged, is preferably uniform staggered with.
It is another object of the present invention to by being assembled into centering revolution dress for the centering swing mechanism of any of the above-described structure
It sets, to realize the application of centering swing mechanism provided by the invention, specific technical solution is for example following:
Centering slewing equipment feels relieved swing mechanism in including a mandrel and any of the above-described centering swing mechanism
Axis concentric (center line coaxial arrangement) suit, centering swing mechanism are moved along the centerline parallel of mandrel；In other words, work as mandrel
When level ground is arranged, centering swing mechanism can be translatable in the horizontal direction；When mandrel is arranged perpendicular to the ground, swing mechanism of feeling relieved
It can be vertically moved up or down.
Compared with prior art, centering swing mechanism and device provided by the invention have the advantage that
1) present invention by simultaneously be equipped with the first rolling assembly and the second rolling assembly parts and meanwhile do rotary motion with
The demand of linear motion.
2) present invention by using movement secondary combination independent realize compound motion so that each modular construction simply,
It is easy to make and easy to maintain.
3) present invention is made of by arranging in ring body multiple first rolling members, the second rolling member and third rolling member
Rolling pair, implementation mechanism is vertical, revolution directed movement functional requirement simultaneously, also meet large scale equipment after mounting at the scene
Each station under, can bear the load of the three-dimensional space by generating when operation.
4) present invention is by using the second rolling assembly, so that the linear guide precision prescribed for cooperating mandrel later reduces,
It is easy to make, is convenient for safeguarding.
5) present invention is mounted on the parts of linear motion function by the swing mechanism that will feel relieved, and drives third rolling group
Part simultaneously constrains moving component ontological idea of freedom degree by the part, that is, realizes boning out campaign and centering at an arbitrary position
Revolution is completed at the same time.
Detailed description of the invention
Fig. 1 is the assembling section of centering slewing equipment provided by the invention；
Fig. 2 is the top view of centering swing mechanism provided by the invention；
Fig. 3 is the partial enlarged view of centering swing mechanism provided by the invention；
Fig. 4 is the partial enlarged view of centering swing mechanism provided by the invention；
Fig. 5 is the partial enlarged view of centering swing mechanism provided by the invention.
Specific embodiment
The present invention is made further to illustrate in detail, completely below with reference to embodiment and attached drawing, but is not construed as to this hair
Bright restriction.
The present invention provides a kind of centering swing mechanisms, are divided into the centering ring 10 and rotating ring 20 of concentric socket, centering
The first rolling assembly 30, the center line and centering ring 10 and rotating ring 20 of the first rolling assembly 30 are equipped between ring 10 and rotating ring 20
Center of circle coaxial arrangement, and to 20 radial positioning of rotating ring and carried by the first rolling assembly 30, the first rolling assembly 30 is by more
A first rolling member 31 forms, and the first rolling member 31 includes the first idler wheel 311, the first support 312 and the first shaft stool 313, the
One idler wheel 311 is fixedly connected with the outer surface of centering ring 10, the inner surface of the first idler wheel 311 and rotating ring 20 through the first support 312
It is tangent, at this point, rotating ring 20 is rotated using 20 internal diameter of rotating ring as track around centering ring 10 under the first rolling assembly 30 guiding, it is complete
At centering rotary motion.As a kind of preferable scheme of the present embodiment, through first between the first idler wheel 311 and the first support 312
Shaft stool 313 connects, and in other words, rolls (movement) carrier and is arranged in the first idler wheel.
In order to guarantee stability when entirely centering swing mechanism movement and the reasonability of carrying, as one kind of the invention
Preferable embodiment, centering ring 10 is respectively by the first centering ring 11 (upper ring A), the second centering ring 12 (lower ring B) and centering ring
Connection frame 13 forms, and the first centering ring and the second centering ring are symmetrical arranged and link into an integrated entity through centering ring connection frame 13, changes speech
It, the first centering ring and the second centering ring are respectively fixedly connected with the both ends of centering ring connection frame 13；First centering ring and second is determined
Thimble outer surface is equipped with multiple first rolling members 31, to guarantee the rotary stability of rotating ring.Correspondingly, rotating ring 20 also divides
To be socketed with the first rotating ring and the second rotating ring, the first centering ring 11 and 21 concentric of the first rotating ring, the second centering ring 12
It is socketed with 22 concentric of the second rotating ring, the inner surface and the first idler wheel 311 of the first rotating ring and the second rotating ring ring body are tangent
At rotary rail.
In addition, the inner surface of the first centering ring and the second centering ring is equipped with the second rolling assembly 40, it can be achieved that entire centering
Swing mechanism moves vertically under being oriented to while rotary motion through the second rolling assembly 40 along gyratory directions, i.e. the first rolling group
The vertical movement of 30 centerline direction of part；Second rolling assembly 40 is made of multiple second rolling members 41, and the second rolling member 41 is by
Second wheel 411, the second shaft stool 412, the second support 413 composition；Similarly, it rolls (movement) carrier and is arranged in the second idler wheel
It is interior.As a kind of preferable embodiment, both ends that the first centering ring and the second centering ring are not connect with centering ring connection frame 13
Portion adds multiple second rolling members 41, to guarantee stationarity when entire centering swing mechanism movement；It can also be according to load-bearing or shifting
Dynamic rigidity needs to add the second rolling member 41, and the stability that guarantee of being subject to moves is not construed as the tool of the second rolling member 41
Body position uniqueness.
It is noted that for eliminate direction of rotation on radial deflection and rotating ring 20 transported together with centering ring 10
Linear velocity difference when dynamic and the axial displacement generated in other words can be in company with having revolution and axis to implement this centering swing mechanism
To the synchronous requirement being axially moved of the function executing unit part of movement, inventor adds third rolling assembly 50 on the basis of the above,
For the axial limiting of rotating ring 20, third rolling assembly 50 is made of multiple third rolling members 51, and Fig. 5 is third rolling member
Partial enlarged view, as shown in figure 5, third rolling assembly 50 includes multiple third rolling members 51, third rolling member 51 includes third
Pair of rollers 511, shaft stool are to 512 and third support 513, and third pair of rollers 511 is respectively through shaft stool to 512 independent connection thirds
Support 513, third support 513 connect the ring body exterior surface of the first centering ring and the second centering ring, the rotation of 511 sandwiched of third pair of rollers
First rotating ring of change 20 and the second rotating ring ring body both ends；Wherein third idler wheel is taper cone pulley, and correspondingly, taper cone pulley is smaller
Locate nearly centering ring 10；Therefore between 20 sandwiched of the rotating ring taper clip wheel pair, therefore two end faces of the first change and the second rotating ring
The respectively track of third pair of rollers 511, the taper cone pulley of third rolling member 51 and is matched therewith rotary annular into rolling pair, from
And make the centering swing mechanism that can do rotary motion simultaneously when realizing axial movement.As a kind of preferable embodiment,
The taper of taper cone pulley is selected by rotational speed, preferably the speed angle bus centre of gyration point that is intersected in mechanism, to guarantee third
The linear speeds tapers such as the rolling circle of rolling assembly 50 is；Can be achieved the centering swing mechanism rotation when big small end speed angle it is identical with
Guarantee the stability turned round and load-bearing rigidity and frictional force is made to be minimum value.
As a kind of preferable embodiment, as shown in Fig. 2, for the stability for guaranteeing movement, the first rolling assembly, second
The center line coaxial arrangement of rolling assembly, third rolling assembly, and wherein rolling member is circumferentially evenly arranged, it is preferably staggeredly equal
Cloth.
At this point, the first rolling assembly 30 (radial rolling element) rolls circle center and the second rolling assembly 40 (axial rolling body)
The line extended line of axial center point passes through the rotary middle point of rotating ring 20 and centering ring 10.
In practical applications, rotating ring is connected with the workpiece for having lifting or translation, rotation function to require and constitutes a centering
Slewing equipment, as depicted in figs. 1 and 2, a centering slewing equipment at least mandrel 60, and the periphery of the cross section of mandrel 60 is non-
It is round and tangent with the second idler wheel 411；The workpiece connecting at this time with rotating ring 20 can be rotated with rotating ring 20, and with centering ring 10
It is moved along mandrel 60, when mandrel 60 is arranged perpendicular to the ground, workpiece liftable；When the setting of the parallel ground of mandrel 60, workpiece can
Translation.
Be it is necessary to described herein finally: above content embodiment of the present invention is described in detail, but this hair
It is bright to be not limited to the above embodiment, within the knowledge of a person skilled in the art, it can also not depart from
Various changes can be made under the premise of present inventive concept.
Claims (21)
1. swing mechanism of feeling relieved, it is characterised in that: centering ring and rotating ring including concentric socket, centering ring and rotation interannular
Equipped with the first rolling assembly, the center line of centering ring, the first rolling assembly and rotating ring is coaxially disposed, and passes through the first rolling group
Part is to rotating ring radial positioning and carries, and rotating ring is track around centering using rotating ring internal diameter under the first rolling assembly guiding
Ring rotation；
The inner surface of centering ring and/or the end face of centering ring are equipped with the second rolling assembly, for realizing entire centering swing mechanism
Along centering ring center line movement under being oriented to while rotary motion through the second rolling assembly.
2. centering swing mechanism as described in claim 1, it is characterised in that: the first rolling assembly is by multiple first rolling member groups
At the first rolling member includes the first idler wheel, the first support and the first shaft stool, and the first idler wheel is fixedly connected with centering through the first support
The inner surface of the outer surface of ring, the first idler wheel and rotating ring is tangent.
3. centering swing mechanism as claimed in claim 2, it is characterised in that: through first axle branch between the first idler wheel and the first support
Seat connection.
4. centering swing mechanism as claimed in claim 2, it is characterised in that: centering ring is by the first centering ring, the second centering ring
It is formed with centering ring connection frame, the first centering ring and the second centering ring are symmetrical arranged and link into an integrated entity through centering ring connection frame.
5. centering swing mechanism as claimed in claim 4, it is characterised in that: the first centering ring and the second centering ring outer surface are equal
It is distributed multiple first rolling members.
6. centering swing mechanism as claimed in claim 4, it is characterised in that: rotating ring is divided into the first rotating ring and the second rotation
Ring.
7. centering swing mechanism as claimed in claim 6, it is characterised in that: the first centering ring and the first rotating ring concentric set
It connects, the second centering ring and the second rotating ring concentric are socketed, the inner surface and first of the first rotating ring and the second rotating ring ring body
Idler wheel is mutually cut into rotary rail.
8. centering swing mechanism as claimed in claim 7, it is characterised in that: the second rolling assembly is by multiple second rolling member groups
At the second rolling member is made of the second idler wheel, the second shaft stool and the second support.
9. centering swing mechanism as claimed in claim 8, it is characterised in that: through the second axis branch between the second idler wheel and the second support
Seat connection.
10. centering swing mechanism as claimed in claim 9, it is characterised in that: the first centering ring and the second centering ring are not and fixed
The both ends of thimble connection frame connection add multiple second rolling members.
11. centering swing mechanism as claimed in claim 6, it is characterised in that: further include a third rolling assembly, for rotating
The axial limiting of ring, third rolling assembly include multiple third rolling members, and third rolling member includes third pair of rollers, third axis branch
Seat to and third support, third pair of rollers respectively through third shaft stool to independent connection third support, third support connection first
The ring body exterior surface of centering ring and the second centering ring, the first rotating ring and the second rotating ring ring of third pair of rollers sandwiched rotating ring
Body both ends.
12. centering swing mechanism as claimed in claim 11, it is characterised in that: the third idler wheel in third pair of rollers is taper
Wheel.
13. centering swing mechanism as claimed in claim 12, it is characterised in that: the nearly centering ring of taper cone pulley smaller part.
14. centering swing mechanism as claimed in claim 12, it is characterised in that: rotating ring is located between taper cone pulley, third
The taper cone pulley of rolling member and the rotating ring matched with taper cone pulley are along rotating ring member rail thicknesses direction formation rolling pair.
15. centering swing mechanism as claimed in claim 12, it is characterised in that: the taper of taper cone pulley is determined by rotational speed.
16. centering swing mechanism as claimed in claim 12, it is characterised in that: the taper of taper cone pulley is that taper wheel speed angle is female
Line is intersected in the centre of gyration point angulation of the centering swing mechanism.
17. centering swing mechanism as claimed in claim 11, it is characterised in that: the first rolling assembly, the second rolling assembly, the
Three rolling assemblies are separately circumferentially evenly arranged.
18. centering swing mechanism as claimed in claim 11, it is characterised in that: the first rolling assembly, the second rolling assembly, the
Three rolling assemblies are uniform staggered with.
19. slewing equipment of feeling relieved, it is characterised in that: including any centering turn-around machine of a mandrel and claim 1~16
Structure, centering swing mechanism and mandrel are set with center line, and centering swing mechanism is moved along the centerline parallel of mandrel.
20. centering slewing equipment as claimed in claim 19, it is characterised in that: when the setting of mandrel level ground, feel relieved back
Rotation mechanism can be translatable in the horizontal direction.
21. centering slewing equipment as claimed in claim 19, it is characterised in that: when mandrel is arranged perpendicular to the ground, feel relieved back
Rotation mechanism can be vertically moved up or down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795376.5A CN106348200B (en) | 2016-08-31 | 2016-08-31 | Centering swing mechanism and centering slewing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795376.5A CN106348200B (en) | 2016-08-31 | 2016-08-31 | Centering swing mechanism and centering slewing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106348200A CN106348200A (en) | 2017-01-25 |
| CN106348200B true CN106348200B (en) | 2019-01-15 |
Family
ID=57857676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795376.5A Active CN106348200B (en) | 2016-08-31 | 2016-08-31 | Centering swing mechanism and centering slewing equipment |
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| Country | Link |
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| CN (1) | CN106348200B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412973B (en) * | 2020-12-09 | 2022-07-26 | 泰富重工制造有限公司 | Large-diameter internal rotation movement mechanism |
| CN112664574B (en) * | 2020-12-09 | 2022-07-22 | 泰富重工制造有限公司 | Self-centering mechanism for large-diameter centering rotary equipment |
| CN112412974B (en) * | 2020-12-09 | 2022-07-26 | 泰富重工制造有限公司 | Large-scale external rotation movement mechanism |
| CN113389804B (en) * | 2021-04-20 | 2023-03-28 | 中国航空工业集团公司北京长城航空测控技术研究所 | Eccentric roller assembly bearing rotation structure and adjusting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737200A1 (en) * | 1987-11-03 | 1989-05-18 | Kloeckner Humboldt Deutz Ag | Bulk-material store, in particular longitudinal or circular store |
| EP0399212A1 (en) * | 1989-05-26 | 1990-11-28 | Hartung, Kuhn & Co. Maschinenfabrik Gmbh | Charging wagon for a coke oven battery |
| CN2282015Y (en) * | 1996-06-20 | 1998-05-20 | 黄胜凯 | Rotary structure for rotary relaxing room |
| CN2923609Y (en) * | 2006-07-17 | 2007-07-18 | 中国华电工程(集团)有限公司 | Circular material field with door-frame type material piling-taking material |
| CN204430252U (en) * | 2015-01-22 | 2015-07-01 | 张文义 | Torpedo tank car molten iron mouth protective cover |
| CN205998937U (en) * | 2016-08-31 | 2017-03-08 | 泰富重工制造有限公司 | Centering slew gear and centering slewing equipment |
-
2016
- 2016-08-31 CN CN201610795376.5A patent/CN106348200B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737200A1 (en) * | 1987-11-03 | 1989-05-18 | Kloeckner Humboldt Deutz Ag | Bulk-material store, in particular longitudinal or circular store |
| EP0399212A1 (en) * | 1989-05-26 | 1990-11-28 | Hartung, Kuhn & Co. Maschinenfabrik Gmbh | Charging wagon for a coke oven battery |
| CN2282015Y (en) * | 1996-06-20 | 1998-05-20 | 黄胜凯 | Rotary structure for rotary relaxing room |
| CN2923609Y (en) * | 2006-07-17 | 2007-07-18 | 中国华电工程(集团)有限公司 | Circular material field with door-frame type material piling-taking material |
| CN204430252U (en) * | 2015-01-22 | 2015-07-01 | 张文义 | Torpedo tank car molten iron mouth protective cover |
| CN205998937U (en) * | 2016-08-31 | 2017-03-08 | 泰富重工制造有限公司 | Centering slew gear and centering slewing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106348200A (en) | 2017-01-25 |
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