CN113955652A - Tower crane device capable of increasing independent free height - Google Patents
Tower crane device capable of increasing independent free height Download PDFInfo
- Publication number
- CN113955652A CN113955652A CN202111228275.7A CN202111228275A CN113955652A CN 113955652 A CN113955652 A CN 113955652A CN 202111228275 A CN202111228275 A CN 202111228275A CN 113955652 A CN113955652 A CN 113955652A
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- tower
- tower crane
- crane device
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Classifications
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- 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
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- 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
- B66C23/88—Safety gear
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- 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
- B66C23/88—Safety gear
- B66C23/94—Safety gear for limiting slewing movements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a tower crane device for increasing independent free height, and relates to the technical field of building equipment. This increase tower crane device of independent free height, including the body of the tower, the upper end of body of the tower is rotated and is installed gyration lift festival, there is the davit in the upper end of gyration lift festival through pull rod fixed mounting, the lower extreme of gyration lift festival is provided with movable mechanism, the upper end of body of the tower is provided with supporting mechanism, supporting mechanism includes hydraulic pressure post and cup joint section of thick bamboo, hydraulic pressure post fixed mounting is at the inboard center in top of body of the tower, the top of body of the tower is run through to the upper end of hydraulic pressure post, the surface at the hydraulic pressure post is cup jointed in the activity of cup joint section of thick bamboo. This increase tower crane device of independent free height sets up moving mechanism and supporting mechanism, and the independent free height of nimble adjustment tower crane when receiving wind-force and blowing reduces the range of rocking of tower crane device to locking the gyration lifting joint, avoided the tower crane device constantly to rock, form the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to a tower crane device for increasing independent free height.
Background
The tower crane is the most common hoisting equipment on the construction site, namely the tower crane, is lengthened section by section and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction, the tower crane is indispensable equipment on the construction site, and the construction tower crane is adopted for carrying the construction raw materials, so that manpower and vehicles can be effectively saved.
However, when the tower crane device is used, high-rise buildings around the tower crane device can block the tower crane device, so that the tower crane device cannot complete rotation work, and after the height of the tower crane device is increased, the tower crane device is greatly influenced by wind power and is easy to shake under the blowing of the wind power, thereby forming potential safety hazards.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a tower crane device with increased independent free height, which reduces the shaking amplitude of the tower crane device and locks a rotary lifting joint by matching a movable mechanism with a supporting mechanism when wind power blows, thereby avoiding the continuous shaking of the tower crane device and forming potential safety hazards.
In order to achieve the purpose, the invention is realized by the following technical scheme: a tower crane device for increasing independent free height comprises a tower body, wherein a rotary lifting joint is fixedly mounted at the upper end of the tower body, a suspension arm is fixedly mounted at the upper end of the rotary lifting joint through a pull rod, a movable mechanism is arranged at the lower end of the rotary lifting joint, and a supporting mechanism is arranged at the upper end of the tower body;
the supporting mechanism comprises a hydraulic column and a sleeve barrel, the hydraulic column is fixedly mounted at the center of the inner side of the top of the tower body, the upper end of the hydraulic column penetrates through the top of the tower body, the sleeve barrel is movably sleeved on the outer surface of the hydraulic column, and the sleeve barrel is located at the center of the top of the tower body.
Preferably, the movable mechanism comprises a fixed strip, a movable groove and a cross rod, the fixed strip is movably arranged at the upper end and the lower end of the cross rod, the movable groove is arranged at one side of the fixed strip close to the cross rod, and the cross rod is movably arranged between the tower body and the rotary lifting joint.
Preferably, the crossbar includes dwang and adaptor, the dwang rotates to be installed in the crossbar and is close to one side of hydraulic pressure post, the adaptor rotates the surface of installing at the dwang, the bottom of adaptor meets with the top of shaft.
Preferably, the supporting mechanism is still including rotating post, annular stationary blade and extruded article, it rotates the one end of installing near the hydraulic pressure post at the dwang to rotate the post, annular stationary blade fixed mounting is in the bottom of rotating the post, the bottom of extruded article annular stationary blade meets with the top of a cover section of thick bamboo, the extruded article sets up the inboard at a cover section of thick bamboo.
Preferably, the sleeve joint barrel comprises a groove and a resistance strip, the groove is formed in one side, close to the hydraulic column, of the sleeve joint barrel, and the resistance strip is fixedly installed on the inner side of the groove.
Preferably, the extruded part includes first cavity, second cavity, fixed lug, activity post, seal cover and answer spring, the hydraulic pressure post department is kept away from in the inboard of a cover sleeve to first cavity, the second cavity is seted up and is close to hydraulic pressure post department in the inboard of a cover sleeve, fixed lug fixed mounting keeps away from hydraulic pressure post department in the inboard of first cavity, activity post movable mounting is in the inboard of a cover sleeve, the both ends of activity post run through respectively to first cavity and second cavity in, seal cover fixed mounting is at the surface of activity post, one side that the hydraulic pressure post was kept away from to the seal cover meets with the inner wall of second cavity, answer spring activity cup joints the surface at the activity post, answer spring is located the inboard of first cavity.
The invention provides a tower crane device for increasing independent free height. The method has the following beneficial effects:
(1) this increase tower crane device of independent free height sets up moving mechanism and supporting mechanism, and the independent free height of nimble adjustment tower crane when receiving wind-force to blow, reduces the range of rocking of tower crane device to locking the gyration lifting joint, avoided the tower crane device constantly to rock, form the potential safety hazard.
(2) This increase tower crane device of independent free height, under the effect of adaptor, the one end activity downwards that the dwang is close to the hydraulic pressure post, the dwang of activity downwards forms the support to cup joint a section of thick bamboo application of force through rotating post and annular stationary blade, the resilience force of cup joint a section of thick bamboo department, forms the support to crossbar and gyration lift festival promptly, has avoided the gyration lift festival to take place to rock in the upper end of hydraulic pressure post.
(3) This increase tower crane device of independent free height, when cup jointing a section of thick bamboo and receiving the extrusion, cup joint a section of thick bamboo and take place deformation, under the restriction of body of the tower, cup joint a section of thick bamboo and press close to hydraulic pressure post surface, the recess is to the reverse protrusion of hydraulic pressure post department this moment, the inboard resistance strip of recess pastes tightly with hydraulic pressure post surface, frictional force between a section of thick bamboo and the hydraulic pressure post has been cup jointed in the increase, when the hydraulic pressure post takes place to rock along with gyration lifting joint, the hydraulic pressure post is to the outside extrusion cup jointing a section of thick bamboo, the resilience force counteraction of a cup jointing a section of thick bamboo is on the hydraulic pressure post, make it rock the range and reduce greatly.
(4) This increase tower crane device of independent free height, the movable column contacts the back with the inner wall of second cavity, the extrusion cup joints a section of thick bamboo, make inboard resistance strip of recess hug closely with the hydraulic pressure post, discharge the inboard air of recess in a large number to the outside, the hydraulic pressure post pastes tightly with the outside of cup jointing a section of thick bamboo this moment, when the hydraulic pressure post is replied, the cup jointing a section of thick bamboo produces the dragging effect to the hydraulic pressure post, has slowed down the answer speed of hydraulic pressure post, avoided the hydraulic pressure post to reply fast and caused the gyration to go up and down to save and constantly to rock.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a tower body part of the invention;
FIG. 3 is an enlarged view of the structure of FIG. 2;
FIG. 4 is a schematic view of the structure of the present invention at the cross bar;
FIG. 5 is a schematic view of the socket structure of the present invention;
FIG. 6 is a cross-sectional view of the socket of the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 6 at B according to the present invention.
In the figure: 1. a tower body; 2. a rotary lifting joint; 3. a suspension arm; 4. a movable mechanism; 41. a fixing strip; 42. a movable groove; 43. a cross bar; 431. rotating the rod; 432. an adapter; 5. a support mechanism; 51. a hydraulic column; 52. sleeving a sleeve; 521. a groove; 522. a resistance strip; 53. rotating the column; 54. an annular fixing sheet; 55. an extrusion; 551. a first cavity; 552. a second cavity; 553. fixing the bump; 554. a movable post; 555. sealing sleeves; 556. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an increase independent free height's tower crane device, includes body of the tower 1, and the upper end fixed mounting of body of the tower 1 has gyration lift festival 2, and there is davit 3 gyration lift festival 2's upper end through pull rod fixed mounting, and gyration lift festival 2's lower extreme is provided with movable mechanism 4, and the upper end of body of the tower 1 is provided with supporting mechanism 5.
The movable mechanism 4 comprises a fixed bar 41, a movable groove 42 and a cross bar 43, the fixed bar 41 is movably arranged at the upper end and the lower end of the cross bar 43, the fixed bar 41 is divided into two groups and is respectively and fixedly arranged at the bottom of the rotary lifting joint 2 and the top of the tower body 1, the movable groove 42 is arranged at one side of the fixed bar 41 close to the cross bar 43, the cross bar 43 is movably arranged between the tower body 1 and the rotary lifting joint 2, the cross bar 43 comprises a rotating rod 431 and an adapter 432, the rotating rod 431 is rotatably arranged at one side of the cross bar 43 close to the hydraulic column 51, the adapter 432 is rotatably arranged on the outer surface of the rotating rod 431, and the bottom of the adapter 432 is connected with the top of the tower body 1.
The supporting mechanism 5 comprises a hydraulic column 51 and a sleeve 52, the hydraulic column 51 is fixedly arranged at the center of the inner side of the top of the tower body 1, the upper end of the hydraulic column 51 penetrates through the top of the tower body 1, the sleeve 52 is movably sleeved on the outer surface of the hydraulic column 51, the sleeve 52 is positioned at the center of the top of the tower body 1, when the hydraulic column 51 shakes along with the rotary lifting joint 2, the hydraulic column 51 extrudes the sleeve 52 outwards, the resilience of the sleeve 52 acts on the hydraulic column 51 in a reaction manner, so that the shaking amplitude of the hydraulic column is greatly reduced, the sleeve 52 comprises a groove 521 and a resistance strip 522, the groove 521 is arranged at one side of the sleeve 52 close to the hydraulic column 51, the resistance strip 522 is fixedly arranged at the inner side of the groove 521, when the sleeve 52 is extruded, the sleeve 52 deforms, under the limitation of the tower body 1, the sleeve 52 approaches the outer surface of the hydraulic column 51, at the moment, the groove 521 reversely protrudes towards the hydraulic column 51, the resistance strip 522 on the inner side of the groove 521 is tightly attached to the outer surface of the hydraulic column 51, so that the friction force between the sleeve 52 and the hydraulic column 51 is increased, the support mechanism 5 further comprises a rotating column 53, an annular fixing piece 54 and an extrusion piece 55, the rotating column 53 is rotatably installed at one end of the rotating rod 431 close to the hydraulic column 51, the annular fixing piece 54 is fixedly installed at the bottom of the rotating column 53, the bottom of the annular fixing piece 54 of the extrusion piece 55 is connected with the top of the sleeve 52, the extrusion piece 55 is arranged on the inner side of the sleeve 52, the extrusion piece 55 comprises a first cavity 551, a second cavity 552, a fixing lug 553, a movable column 554, a sealing sleeve 555 and a return spring 556, the first cavity 551 is arranged on the inner side of the sleeve 52 far away from the hydraulic column 51, the second cavity 552 is arranged on the inner side of the sleeve 52 close to the hydraulic column 51, and the fixing lug is fixedly installed on the inner side of the first cavity 551 far away from the hydraulic column 51, the movable column 554 is movably arranged on the inner side of the sleeve 52, two ends of the movable column 554 respectively penetrate into the first cavity 551 and the second cavity 552, the sealing sleeve 555 is fixedly arranged on the outer surface of the movable column 554, one side of the sealing sleeve 555, which is far away from the hydraulic column 51, is connected with the inner wall of the second cavity 552, the return spring 556 is movably sleeved on the outer surface of the movable column 554, and the return spring 556 is positioned on the inner side of the first cavity 551.
When the tower crane device is used, the tower body 1 is vertically arranged on a horizontal ground, when the tower crane device is blocked by a high-rise building and can not complete the rotary work, a switch of the hydraulic column 51 is turned on, the hydraulic column 51 drives the rotary lifting joint 2 to rise, when the rotary lifting joint 2 rises, the suspension arm 3 rises along with the rise of the rotary lifting joint, so that the rotary work of the tower crane device is smoothly carried out, when the hydraulic column 51 drives the rotary lifting joint 2 to move upwards, the cross rod 43 moves along with the hydraulic column, the upper end and the lower end of the cross rod 43 move in the movable groove 42 of the fixing strip 41, along with the movement of the cross rod 43, the cross part of the cross rod 43 moves upwards, so that one end of the rotary rod 431, which is far away from the hydraulic column 51, is driven to lift upwards, under the action of the adapter 432, one end of the rotary rod 431, which is close to the hydraulic column 51, moves downwards, the downward movable rotary rod 431 applies force to the annular fixing piece 54 through the rotary column 53, and the annular fixing piece 54, and the resilience force at the rotary rod sleeving barrel 52 forms a support, that is, the cross rod 43 and the rotary lifting joint 2 are supported, so that the rotary lifting joint 2 is prevented from shaking at the upper end of the hydraulic column 51, when the sleeve 52 is extruded, the sleeve 52 deforms, the sleeve 52 is close to the outer surface of the hydraulic column 51 under the limitation of the tower body 1, at the moment, the groove 521 reversely protrudes towards the hydraulic column 51, the resistance strip 522 at the inner side of the groove 521 is close to the outer surface of the hydraulic column 51, so that the friction force between the sleeve 52 and the hydraulic column 51 is increased, when the hydraulic column 51 shakes along with the rotary lifting joint 2, the sleeve 52 is extruded outwards by the hydraulic column 51, the resilience force of the sleeve 52 is reacted on the hydraulic column 51, so that the shaking amplitude of the hydraulic column 51 is greatly reduced, when the sleeve 52 is extruded by the hydraulic column 51, the air at the inner sides of the first cavity 551 and the second cavity 552 is extruded, the air pressure acts on the hydraulic column 51, so that the shaking amplitude of the hydraulic column 51 is reduced, when the sleeve 52 is continuously squeezed by the hydraulic column 51, the movable column 554 moves towards the fixed lug 553, when the fixed lug 553 is in contact with the movable column 554, the reaction force of the fixed lug 553 acts on the movable column 554, at this time, the movable column 554 squeezes the return spring 556 to move towards the inside of the second cavity 552, and after the movable column contacts with the inner wall of the second cavity 552, the sleeve 52 is squeezed, so that the resistance strip 522 on the inner side of the groove 521 is tightly attached to the hydraulic column 51, a large amount of air on the inner side of the groove 521 is discharged towards the outer side, at this time, the hydraulic column 51 is tightly attached to the outer side of the sleeve 52, when the hydraulic column 51 returns, the sleeve 52 produces a pulling effect on the hydraulic column 51, the return speed of the hydraulic column 51 is slowed down, and the phenomenon that the rotary lifting joint 2 continuously shakes due to the quick return of the hydraulic column 51 is avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides an increase independent free height's tower crane device, includes body of the tower (1), its characterized in that: a rotary lifting joint (2) is fixedly mounted at the upper end of the tower body (1), a suspension arm (3) is fixedly mounted at the upper end of the rotary lifting joint (2) through a pull rod, a movable mechanism (4) is arranged at the lower end of the rotary lifting joint (2), and a supporting mechanism (5) is arranged at the upper end of the tower body (1);
the supporting mechanism (5) comprises a hydraulic column (51) and a sleeve joint barrel (52), the hydraulic column (51) is fixedly installed at the center of the inner side of the top of the tower body (1), the top of the tower body (1) is penetrated through the upper end of the hydraulic column (51), the sleeve joint barrel (52) is movably sleeved on the outer surface of the hydraulic column (51), and the sleeve joint barrel (52) is located at the center of the top of the tower body (1).
2. The tower crane device for increasing the independent free height according to claim 1, wherein: the movable mechanism (4) comprises a fixed bar (41), a movable groove (42) and a cross rod (43), wherein the fixed bar (41) is movably arranged at the upper end and the lower end of the cross rod (43), the movable groove (42) is arranged at one side, close to the cross rod (43), of the fixed bar (41), and the cross rod (43) is movably arranged between the tower body (1) and the rotary lifting joint (2).
3. The tower crane device for increasing the independent free height according to claim 2, wherein: the cross rod (43) comprises a rotating rod (431) and an adapter piece (432), the rotating rod (431) is rotatably installed on one side, close to the hydraulic column (51), of the cross rod (43), the adapter piece (432) is rotatably installed on the outer surface of the rotating rod (431), and the bottom of the adapter piece (432) is connected with the top of the tower body (1).
4. The tower crane device for increasing the independent free height according to claim 3, wherein: supporting mechanism (5) are still including rotating post (53), annular stationary blade (54) and extruded article (55), rotate post (53) and rotate the one end of installing and being close to hydraulic pressure post (51) at dwang (431), annular stationary blade (54) fixed mounting is in the bottom of rotating post (53), the bottom of extruded article (55) annular stationary blade (54) meets with the top of socket (52), extruded article (55) set up the inboard at socket (52).
5. The tower crane device for increasing the independent free height according to claim 1, wherein: the sleeve joint cylinder (52) comprises a groove (521) and a resistance strip (522), the groove (521) is formed in one side, close to the hydraulic column (51), of the sleeve joint cylinder (52), and the resistance strip (522) is fixedly installed on the inner side of the groove (521).
6. The tower crane device for increasing the independent free height according to claim 4, wherein: the extrusion part (55) comprises a first cavity (551), a second cavity (552), a fixed lug (553), a movable column (554), a sealing sleeve (555) and a return spring (556), wherein the first cavity (551) is arranged at the inner side of the sleeve barrel (52) and far away from the hydraulic column (51), the second cavity (552) is arranged at the inner side of the sleeve barrel (52) and close to the hydraulic column (51), the fixed lug (553) is fixedly arranged at the inner side of the first cavity (551) and far away from the hydraulic column (51), the movable column (554) is movably arranged at the inner side of the sleeve barrel (52), two ends of the movable column (554) respectively penetrate through the first cavity (551) and the second cavity (552), the sealing sleeve (555) is fixedly arranged on the outer surface of the movable column (554), one side of the sealing sleeve (555) far away from the hydraulic column (51) is connected with the inner wall of the second cavity (552), the return spring (556) is movably sleeved on the outer surface of the movable post (554), and the return spring (556) is positioned inside the first cavity (551).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228275.7A CN113955652B (en) | 2021-10-21 | 2021-10-21 | Tower crane device capable of increasing independent free height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228275.7A CN113955652B (en) | 2021-10-21 | 2021-10-21 | Tower crane device capable of increasing independent free height |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113955652A true CN113955652A (en) | 2022-01-21 |
| CN113955652B CN113955652B (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111228275.7A Active CN113955652B (en) | 2021-10-21 | 2021-10-21 | Tower crane device capable of increasing independent free height |
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| CN (1) | CN113955652B (en) |
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| US20100243973A1 (en) * | 2007-05-18 | 2010-09-30 | Maha Maschinenbau Haldenwang Gmbh & Co. Kg | Scissor-type lifting platform |
| CN201634336U (en) * | 2010-03-23 | 2010-11-17 | 韩善启 | Retractable moveable tower crane |
| CN202529786U (en) * | 2012-03-20 | 2012-11-14 | 上海市电力公司 | Scissors lifting platform for hot-line operation of distribution circuit |
| CN102862919A (en) * | 2012-08-21 | 2013-01-09 | 吉首市宗南重工制造有限公司 | Vehicle-mounted tower crane |
| CN103508340A (en) * | 2013-10-12 | 2014-01-15 | 王亚 | Lifting-following rotary-type self-balancing tower crane |
| CN104925676A (en) * | 2015-07-08 | 2015-09-23 | 湖北浩天专用汽车有限公司 | Vehicle-mounted tower-type aerial working system |
| CN204917846U (en) * | 2015-09-08 | 2015-12-30 | 新乡市百分百机电有限公司 | Cut fork hydraulic pressure lift electric flat carriage |
| CN107253677A (en) * | 2017-06-28 | 2017-10-17 | 无锡威奥液压机电设备有限公司 | A kind of firm engineering tower crane of underframe |
| CN107826994A (en) * | 2017-10-25 | 2018-03-23 | 浙江德清华杨科技有限公司 | Liftable tower crane |
-
2021
- 2021-10-21 CN CN202111228275.7A patent/CN113955652B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100243973A1 (en) * | 2007-05-18 | 2010-09-30 | Maha Maschinenbau Haldenwang Gmbh & Co. Kg | Scissor-type lifting platform |
| CN201634336U (en) * | 2010-03-23 | 2010-11-17 | 韩善启 | Retractable moveable tower crane |
| CN202529786U (en) * | 2012-03-20 | 2012-11-14 | 上海市电力公司 | Scissors lifting platform for hot-line operation of distribution circuit |
| CN102862919A (en) * | 2012-08-21 | 2013-01-09 | 吉首市宗南重工制造有限公司 | Vehicle-mounted tower crane |
| CN103508340A (en) * | 2013-10-12 | 2014-01-15 | 王亚 | Lifting-following rotary-type self-balancing tower crane |
| CN104925676A (en) * | 2015-07-08 | 2015-09-23 | 湖北浩天专用汽车有限公司 | Vehicle-mounted tower-type aerial working system |
| CN204917846U (en) * | 2015-09-08 | 2015-12-30 | 新乡市百分百机电有限公司 | Cut fork hydraulic pressure lift electric flat carriage |
| CN107253677A (en) * | 2017-06-28 | 2017-10-17 | 无锡威奥液压机电设备有限公司 | A kind of firm engineering tower crane of underframe |
| CN107826994A (en) * | 2017-10-25 | 2018-03-23 | 浙江德清华杨科技有限公司 | Liftable tower crane |
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| Publication number | Publication date |
|---|---|
| CN113955652B (en) | 2023-03-03 |
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