CN107686062A - A kind of self-elevating tower crane of variable-angle - Google Patents
A kind of self-elevating tower crane of variable-angle Download PDFInfo
- Publication number
- CN107686062A CN107686062A CN201710651738.8A CN201710651738A CN107686062A CN 107686062 A CN107686062 A CN 107686062A CN 201710651738 A CN201710651738 A CN 201710651738A CN 107686062 A CN107686062 A CN 107686062A
- Authority
- CN
- China
- Prior art keywords
- angle
- tower crane
- attachment
- connector
- self
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
- B66C23/283—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements
- B66C23/286—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a kind of self-elevating tower crane of variable-angle, the tower crane includes tower body, the tower body includes standard knot and conversion saves, the standard knot is sequentially connected from top to bottom, the conversion internode is arranged between two neighboring standard knot at a certain distance, the conversion section includes upper connector, lower connector and articulated elements, the upper connector is connected with the standard knot being positioned above, the lower connector is connected with the standard knot being disposed below, the articulated elements is arranged between upper connector and lower connector, for making upper connector and lower connector relatively rotate to adjust the angle between upper connector and lower connector, realize that the angle of inclination of the standard knot between two neighboring conversion section is consistent with the angle of inclination of structures side.The present invention can change angle of inclination and the profile of tower body, to adapt to the angle of the attachment seating side of the structures such as building, bridge king-post or cooling tower, make the length of per pass attachment basically identical.
Description
Technical field
The invention belongs to technical field of building construction, and in particular to a kind of self-elevating tower crane of variable-angle.
Background technology
Self-elevating tower crane is a kind of crane gear the most frequently used on construction site, is building, bridge king-post or cooling
A kind of essential equipment on the structures such as tower construction site, with structures such as building, bridge king-post or cooling towers
Construction height rise, the continuous supernumerary segment of self-elevating tower crane increases, after tower crane exceedes defined free height, it is necessary to install attached
, and one section of value interval height is adhered to together under installing according to the rules.
As shown in figure 1, existing tower crane includes existing tower body 2, existing attachment 3, tower crane crane arm 4 and tower crane counter-jib 5,
When there is the requirement at angle of inclination the structures sides 1 such as building, bridge king-post or cooling tower, then with the change of height,
The distance of the structures sides such as the existing tower body 2 of tower crane and building, bridge king-post or cooling tower also changes, therefore, existing
The length for having attachment changes therewith, and some attachment (attachment above) length will be very long, causes this road to adhere to
The attachment angle of part is smaller, and so as to reduce the strength and stability of attachment, it is difficult to add attachment design, manufacture and installation
Degree.
The content of the invention
Tower crane bit selecting difficulty, tower crane tower body and structures attachment distance when being tilted for structures present in prior art
Long, the problems such as attachment installation difficulty is big, attachment angle is less than normal, security is relatively low, the present invention provide a kind of variable-angle from
Lift-type tower crane, it sets conversion section in tower body, the change of self-view is saved by converting, the tower body of tower crane is tilted, and
Free height is still vertical state, so as to change the angle of inclination of tower body and profile, with adapt to building, bridge king-post or
The angle of the attachment seating side of the structures such as person's cooling tower, make the length of per pass attachment basically identical, the present invention adapts to model
Enclose extensively, site construction difficulty can be reduced, improve the intellectuality of construction.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of self-elevating tower crane of variable-angle, the tower crane include tower body, and the tower body includes standard knot and conversion saves, institute
State standard knot to be sequentially connected from top to bottom, the conversion internode is arranged between two neighboring standard knot at a certain distance, described
Conversion section includes upper connector, lower connector and articulated elements, and the upper connector is connected with the standard knot being positioned above, described
Lower connector is connected with the standard knot being disposed below, and the articulated elements is arranged between upper connector and lower connector, is used for
Upper connector and lower connector is set to relatively rotate to adjust the angle between upper connector and lower connector, realization is located at phase
The angle of inclination of standard knot between adjacent two conversion section is consistent with the angle of inclination of structures side.
By above-mentioned technical proposal, the tower crane also include it is spaced apart be arranged on it is more between tower body and structures side
Individual attachment, the conversion section are arranged on the position for corresponding to the attachment on the bottom and tower body of tower body.
By above-mentioned technical proposal, when installing a certain attachment, the tower body is located at the portion of the attachment above free height
Office is in vertical state.
By above-mentioned technical proposal, the attachment is telescopic attachment, the attachment and upper connector or lower company
Fitting connects, and the articulated elements includes jointed shaft, and the attachment passes through the flexible drive upper connector of itself or lower connector
Rotated motion around jointed shaft.
By above-mentioned technical proposal, the articulated elements includes jointed shaft and jacking portion, the jacking portion drive upper connector and
Lower connector rotates motion around jointed shaft.
By above-mentioned technical proposal, the jacking portion is oil cylinder or spiral lift.
By above-mentioned technical proposal, the conversion section also includes locating part, and the locating part is used to make upper connector and lower company
Fitting rotates in the angular range of setting.
By above-mentioned technical proposal, the conversion section also includes locking member, and the locking member is used to make upper connector and lower company
Fitting can not relatively rotate to be in the lock state so as to convert section.
By above-mentioned technical proposal, the locking member is pin or screw.By above-mentioned technical proposal, the conversion section also includes
For jacking the part of marking time of tower crane crane arm.
The present invention, have the advantages that：The present invention passes through its upper and lower connector be hinged by design transformation section
Part relatively rotates and then changes angle between the two, so as to change the angle of tower body, tower body is can adapt to building
Or the profile of the structures such as bridge tower, ensure that big attachment angle and less attachment distance, improve attachment intensity and
Stability；Moreover, by setting conversion section to change the angle of tower body, the length and attachment angle that can make attachment are united substantially
One, make the manufacture of attachment and installation difficulty relatively low, it is simple and practical, there is good economic benefit and being widely applied property.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the appearance schematic diagram of traditional tower crane；
Fig. 2 is that tower body adapts to the schematic diagram that structures tilt mounting surface in the embodiment of the present invention；
Fig. 3 is the schematic diagram that tower body is in free height state in the embodiment of the present invention；
Fig. 4 is the schematic diagram that tower body angle is converted when first of attachment is installed in the embodiment of the present invention；
Fig. 5 is the enlarged diagram of first of conversion section in Fig. 4；
Fig. 6 is the enlarged diagram of second conversion section in Fig. 4；
Fig. 7 converts the schematic diagram of tower body angle when being and second attachment is installed in the embodiment of the present invention；
Fig. 8 is the enlarged diagram of second attachment and the 3rd attachment in Fig. 7.
In figure：1- structures side, the existing tower bodies of 2-, the existing attachments of 3-, 4- tower cranes crane arm, 5- tower cranes counter-jib,
6- tower bodies, first of conversion section of 7-, 8- seconds conversion section, first of attachment of 9-, 10- the 3rd conversion section, 11- seconds
Connector, 15- articulated elements under attachment, 12- standard knots, 13- upper connectors, 14-.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as shown in Fig. 2-Fig. 8, a kind of self-elevating tower crane of variable-angle, the tower crane
Including tower body 6, tower body includes standard knot 12 and conversion section (7,8,10), and standard knot is sequentially connected from top to bottom, converts septa intersegmental
Certain distance is arranged between two neighboring standard knot, and conversion section includes upper connector 13, lower connector 14 and articulated elements 15, on
Connector 13 is connected with the standard knot being positioned above, and lower connector 14 is connected with the standard knot being disposed below, articulated elements 15
Between upper connector 13 and lower connector 14, for making upper connector and lower connector relatively rotate with regulation
Angle between connector and lower connector, realize positioned at the two neighboring angle of inclination for converting the standard knot between section with constructing
The angle of inclination of thing side 1 is consistent.
In a preferred embodiment of the invention, as shown in Figure 7, Figure 8, the tower crane is also arranged on tower including spaced apart
Multiple attachments (9,11) between body 6 and structures side 1, conversion section (7,8,10) are arranged on bottom and the tower of tower body 6
Correspond to the position of attachment, or other positions with it.
In a preferred embodiment of the invention, as shown in Fig. 4, Fig. 7, when installing a certain attachment, tower body is located at the attachment
Part above free height is partially in vertical state, and the tower body below the attachment can be with translation-angle.
In a preferred embodiment of the invention, as shown in Fig. 6, Fig. 8, attachment (9,11) is telescopic attachment, attached
Part to be connected with upper connector or lower connector, articulated elements includes jointed shaft, connects in the flexible drive that attachment passes through itself
Part or lower connector rotate motion around jointed shaft, and then control the angle of conversion section.
In a preferred embodiment of the invention, as shown in Figure 5, Figure 6, articulated elements includes jointed shaft and jacking portion, jacking portion
Drive upper connector and lower connector to be rotated motion around jointed shaft, wherein, jacking portion can for oil cylinder, spiral lift or its
His mechanical lift-up mechanism, conversion section can be made around pin joint rotational angle by oil cylinder, spiral lift or other lifting bodies, from
And change the angle of two mounting surfaces above and below conversion section.
In a preferred embodiment of the invention, as shown in Figure 5, Figure 6, conversion section also includes locating part, and locating part is used to make
Upper connector and lower connector rotate in the angular range of setting.
In a preferred embodiment of the invention, as shown in Figure 5, Figure 6, conversion section also includes locking member, and locking member is used to make
Upper connector and lower connector can not relatively rotate and be in the lock state so as to convert section, wherein locking member can be pin,
Screw or other locking mechanisms.
In a preferred embodiment of the invention, conversion section also includes being used for the part of marking time for jacking tower crane crane arm.
In specific application, as shown in Figures 3 to 8, tower body includes standard knot, first conversion section 7, second to the present invention
The conversion section 10 of conversion section the 8, the 3rd, first of attachment 9 and second attachment 11, conversion section can be with the profile of standard knot
Size is basically identical, and includes the consistent structure of structure (strong point under oil cylinder) such as mark time with standard knot, in cylinder jacking
When, the crane arm of tower crane can be jacked by converting the structures such as the part of marking time on section, conversion section can be the knot in standard knot
Add-on parts are installed on structure to form.As shown in figure 3, in the free height of tower crane, first of conversion section 7, second conversion section
8th, the mounting surface up and down of the 3rd conversion section 10 is parallel to each other, and first of conversion section 7, second conversion section the 8, the 3rd become
Change section 10 respectively with corresponding standard knot to be connected, tower body is vertical state.
As shown in Figures 4 to 6, install first attachment 9 when, remove pin or other locking members by first change
Change section 7 and second conversion section 8 unlocks, first of conversion is saved by 7 and the change of second conversion section 8 by oil cylinder or other jacking portions
Angle is changed, when translation-angle, ensures that the tower body on first of attachment 9 is in vertical state by measuring system,
Angle and the side angle of inclination of building or king-post when the tower body between first of conversion section 7 and second conversion section 8
When consistent, stopped transformation angle, and first of conversion is saved into 7 and the locking of second conversion section 8 by pin or other locking members,
First of installation of attachment 9 is fixed.
As shown in Figure 7, Figure 8, when installing second attachment 11, remove pin or other locking members become second
The unblock of 8 and the 3rd conversion section of section 10 is changed, second is converted by the conversion section 10 of section 8 and the 3rd by oil cylinder or other jacking portions
Translation-angle, when translation-angle, ensure that the tower body on second attachment 11 is in vertical shape by measuring system
State, when angle and the side of building or king-post of the tower body between second conversion section 8 and the 3rd conversion section 10 tilt
When angle is consistent, stopped transformation angle, and second conversion section 8 and the 3rd conversion are saved into 10 by pin or other locking members
Locking, the installation of second attachment 11 are fixed.
Increase when tower body continues up, when installing more attachments, reference is according to the operating procedure of second attachment
Can.The flow removed and installed of tower crane is opposite.Conversion section can change the angle of two mounting surfaces above and below itself in the present invention,
By at the bottom of tower body, attachment or other positions installation conversion section, pass through convert section self-view change, thus it is possible to vary
The angle of inclination of tower body and profile.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of self-elevating tower crane of variable-angle, the tower crane includes tower body, it is characterised in that the tower body include standard knot and
Conversion section, the standard knot are sequentially connected from top to bottom, and the conversion internode is arranged on two neighboring standard knot at a certain distance
Between, the conversion section includes upper connector, lower connector and articulated elements, the upper connector and the standard knot being positioned above
Connection, the lower connector are connected with the standard knot being disposed below, and the articulated elements is arranged on upper connector and lower connector
Between, for making upper connector and lower connector relatively rotate to adjust the angle between upper connector and lower connector,
Realize that the angle of inclination of the standard knot between two neighboring conversion section is consistent with the angle of inclination of structures side.
2. the self-elevating tower crane of variable-angle according to claim 1, it is characterised in that it is certain that the tower crane also includes interval
Distance is arranged on multiple attachments between tower body and structures side, and the conversion section is arranged on bottom and the tower body of tower body
The upper position corresponding to the attachment.
3. the self-elevating tower crane of variable-angle according to claim 2, it is characterised in that when a certain attachment is installed, institute
That states that tower body is located at the attachment above free height is partially in vertical state.
4. the self-elevating tower crane of variable-angle according to claim 2, it is characterised in that the attachment is telescopic
Attachment, the attachment are connected with upper connector or lower connector, and the articulated elements includes jointed shaft, and the attachment passes through
The flexible drive upper connector or lower connector of itself rotate motion around jointed shaft.
5. the self-elevating tower crane of variable-angle according to claim 1, it is characterised in that the articulated elements includes jointed shaft
With jacking portion, the jacking portion drives upper connector and lower connector to be rotated motion around jointed shaft.
6. the self-elevating tower crane of variable-angle according to claim 5, it is characterised in that the jacking portion is oil cylinder or spiral shell
Revolve lift.
7. the self-elevating tower crane of variable-angle according to claim 1, it is characterised in that the conversion section also includes spacing
Part, the locating part are used to make upper connector and lower connector rotate in the angular range of setting.
8. the self-elevating tower crane of variable-angle according to claim 1, it is characterised in that the conversion section also includes locking
Part, the locking member are used to make upper connector and lower connector can not relatively rotate and be in the lock state so as to convert section.
9. the self-elevating tower crane of variable-angle according to claim 8, it is characterised in that the locking member is pin or spiral shell
Nail.
10. the self-elevating tower crane of variable-angle according to claim 1, it is characterised in that the conversion section also includes using
In the part of marking time of jacking tower crane crane arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651738.8A CN107686062B (en) | 2017-08-02 | 2017-08-02 | A kind of self-elevating tower crane of variable-angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651738.8A CN107686062B (en) | 2017-08-02 | 2017-08-02 | A kind of self-elevating tower crane of variable-angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107686062A true CN107686062A (en) | 2018-02-13 |
| CN107686062B CN107686062B (en) | 2019-06-11 |
Family
ID=61153111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710651738.8A Active CN107686062B (en) | 2017-08-02 | 2017-08-02 | A kind of self-elevating tower crane of variable-angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107686062B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946509A (en) * | 2018-09-30 | 2018-12-07 | 中国十七冶集团有限公司 | A kind of large-scale wind driven generator is from rising tower crane construction method |
| CN111747317A (en) * | 2020-05-22 | 2020-10-09 | 中建三局集团有限公司 | Self-elevating tower crane heightening and angle transformation conversion section and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29907736U1 (en) * | 1999-05-02 | 1999-08-26 | Heinzle Otto | Tower crane as a top-slewing crane with climbing equipment |
| CN202022671U (en) * | 2011-04-22 | 2011-11-02 | 上海庞源建筑机械租赁有限公司 | Soft attaching structure of tower crane |
| CN202063655U (en) * | 2011-05-24 | 2011-12-07 | 南通十建集团有限公司 | Anti-tilting safe device of tower type crane |
| CN102323073A (en) * | 2011-05-27 | 2012-01-18 | 重庆大学 | Adhesion safety detecting method of tower crane |
| CN103261083A (en) * | 2010-12-17 | 2013-08-21 | 多田野发运有限公司 | Mobile telescopic crane |
| CN103935904A (en) * | 2014-04-22 | 2014-07-23 | 广西大学 | Highly adaptive tower crane semi-flexibility reinforcing device |
| CN103991799A (en) * | 2013-02-14 | 2014-08-20 | 马尼托沃克起重机集团（法国）公司 | Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices |
-
2017
- 2017-08-02 CN CN201710651738.8A patent/CN107686062B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29907736U1 (en) * | 1999-05-02 | 1999-08-26 | Heinzle Otto | Tower crane as a top-slewing crane with climbing equipment |
| CN103261083A (en) * | 2010-12-17 | 2013-08-21 | 多田野发运有限公司 | Mobile telescopic crane |
| CN202022671U (en) * | 2011-04-22 | 2011-11-02 | 上海庞源建筑机械租赁有限公司 | Soft attaching structure of tower crane |
| CN202063655U (en) * | 2011-05-24 | 2011-12-07 | 南通十建集团有限公司 | Anti-tilting safe device of tower type crane |
| CN102323073A (en) * | 2011-05-27 | 2012-01-18 | 重庆大学 | Adhesion safety detecting method of tower crane |
| CN103991799A (en) * | 2013-02-14 | 2014-08-20 | 马尼托沃克起重机集团（法国）公司 | Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices |
| CN103935904A (en) * | 2014-04-22 | 2014-07-23 | 广西大学 | Highly adaptive tower crane semi-flexibility reinforcing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946509A (en) * | 2018-09-30 | 2018-12-07 | 中国十七冶集团有限公司 | A kind of large-scale wind driven generator is from rising tower crane construction method |
| CN111747317A (en) * | 2020-05-22 | 2020-10-09 | 中建三局集团有限公司 | Self-elevating tower crane heightening and angle transformation conversion section and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107686062B (en) | 2019-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20030183594A1 (en) | Crane for the assembly of wind turbines and assembly procedure | |
| CN107686062A (en) | A kind of self-elevating tower crane of variable-angle | |
| CN201538659U (en) | Safe rotation structure of tower crane | |
| WO2012159373A1 (en) | Heavy lifting boom frame system and heavy lifting equipment comprising same | |
| CN102900442A (en) | Boom system, wet spraying machine and engineering machine with boom system | |
| CN107082373A (en) | The derrick crane of the windproof sleeve of extensibility is installed | |
| CN111733968A (en) | Arch net rack node ball rotation fixing device and arch net rack mounting system | |
| CN106149713B (en) | A kind of shoe | |
| CN102131728A (en) | Crane structure | |
| CN201003378Y (en) | Rotarily lifting type headframe and base | |
| CN106553968A (en) | It is a kind of can on-load luffing lifting arm elevator apparatus | |
| CN206529229U (en) | It is a kind of to increase the tower crane device of independence and freedom height | |
| CN218406905U (en) | Wind shield device for high pier construction of wind area bridge | |
| CN106542444A (en) | A kind of moment of flexure reduction structure set up in tower body revolution | |
| CN116462106A (en) | Turning-free Liang Dadiao with adjustable horizontal support system and construction method thereof | |
| CN205500626U (en) | Climbing mechanism in tower crane | |
| CN205527415U (en) | Roofing hoist | |
| CN109050812A (en) | A kind of pier | |
| CN205170224U (en) | Crawler -type moves tower crane | |
| CN208918475U (en) | A kind of rotary drilling rig and its jib lubbing mechanism | |
| CN218374110U (en) | Device is used in road bed construction of preventing wind and blowing snow calamity with adjustable | |
| CN206207367U (en) | One kind lifting lighthouse construction | |
| CN207130713U (en) | One kind rotation ring beam type hydraulic lifting system | |
| CN103803400B (en) | Self-balancing annular space cellular structure outrigger | |
| CN204677117U (en) | A kind of upright movement formula oil-well rig boring tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |