CN111268557A - High stability tower crane for tubular product - Google Patents
High stability tower crane for tubular product Download PDFInfo
- Publication number
- CN111268557A CN111268557A CN202010216620.4A CN202010216620A CN111268557A CN 111268557 A CN111268557 A CN 111268557A CN 202010216620 A CN202010216620 A CN 202010216620A CN 111268557 A CN111268557 A CN 111268557A
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- Prior art keywords
- fixed
- pipe
- stability
- tower crane
- sliding
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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
- B66C23/16—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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/425—Gripping members engaging only the external or internal surfaces of the articles motor actuated
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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
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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
- B66C23/84—Slewing 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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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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
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a high-stability tower crane for pipes, which relates to the technical field of pipe hoisting and comprises a bottom plate, wherein a sliding frame driven by a translation mechanism is slidably arranged on a supporting plate, a damping guide mechanism is arranged between the sliding frame and the supporting plate, a rack is fixed at the lower end of a steel wire rope, and a fixing mechanism for clamping the pipes is arranged on the rack; the pipe hoisting device can clamp and fix a pipe through the arranged fixing mechanism, so that the stability of the process is ensured, the arranged lifting mechanism can drive the supporting plate to flexibly lift at a vertical height, the hoisting and carrying of the pipe are ensured, the arranged stand column can realize that the steering supporting plate drives the fixing mechanism to circumferentially adjust the position, the translation mechanism can drive the fixing mechanism to transversely translate, the efficient and flexible hoisting of the pipe is realized, the working efficiency is effectively improved, the elastic damping effect in the hoisting process can be realized through the arranged elastic traction mechanism and the damping guide mechanism, and the stability of the hoisting of the pipe is obviously improved.
Description
Technical Field
The invention relates to the technical field of pipe hoisting, in particular to a tower crane for high-stability pipes.
Background
The pipe is the material used for making the pipe fitting, different pipe fittings need to use different pipe fittings, the quality of the pipe fitting is directly determined by the quality of the pipe fitting, the pipe fitting is the necessary material for building engineering, and the common pipe fitting comprises a water supply pipe, a drain pipe, a gas pipe, a heating pipe, an electric wire conduit, a rainwater pipe and the like. With the development of science and technology, the pipes used in home decoration also go through the development process of common cast iron pipes, cement pipes, reinforced concrete pipes, asbestos cement pipes, nodular cast iron pipes, galvanized steel pipes, plastic pipes and aluminum-plastic composite pipes, and the pipes need to be lifted and carried to a construction area in the process of building facilities.
Application publication No. CN 109110634A discloses a tower crane for high-stability pipes, which comprises a tower body, the upper end of the tower body is provided with a rotating platform, the upper end of the rotating platform is provided with a tower top, two sides of the tower top are oppositely provided with a balance arm and a crane arm, the lifting arm is movably provided with a lifting mechanism, the lifting mechanism comprises a lifting box, a winding roll and a first driving device for driving the winding roll to rotate are arranged in the lifting box, the winding roll is provided with a traction wire, the end part of the traction wire is fixedly connected with a pipe clamping mechanism, the pipe clamping mechanism comprises a positioning head connected with the traction wire, a clamping device is arranged on the positioning head, the clamping device comprises a telescopic part and a lifting hook, the lifting hook comprises a connector, a first lifting claw and a second lifting claw, the upper ends of the first lifting claw and the second lifting claw extend to the upper end of the connector and are hinged to the lower end of the telescopic portion. Although the device can carry out the jack-up transport to tubular product, the regulation flexibility of jack-up process is relatively poor, can not realize the steady jack-up of high stability to tubular product, for this reason, provides a tower crane for high stability tubular product now to solve above-mentioned technical problem.
Disclosure of Invention
The invention aims to provide a tower crane for high-stability pipes, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a high stability tower crane for tubular product, includes the bottom plate, rotates on the bottom plate and installs the stand, and the sliding sleeve is equipped with the sliding sleeve on the stand, is fixed with the crane on the sliding sleeve, is equipped with the elevating system who is used for driving its vertical removal on the crane, crane lateral wall level is fixed with the backup pad, installs elastic traction mechanism between backup pad and the sliding sleeve, slidable mounting has the carriage by the translation mechanism driven in the backup pad, installs shock attenuation guiding mechanism between carriage and the backup pad, be equipped with in the backup pad around the reel, around being equipped with wire rope on the reel, the wire rope lower extreme is fixed with the frame, is equipped with in the frame to be used for.
As a modified scheme of the invention: the lifting mechanism comprises a motor I fixed with the lifting frame, an output shaft of the motor I is in driving connection with a transmission gear, and the transmission gear is in meshing connection with a spur rack fixed on the side wall of the upright post.
As a modified scheme of the invention: the elastic traction mechanism comprises a guide sleeve hinged on the supporting plate, a pull rod hinged with the sliding sleeve is arranged in the guide sleeve in a sliding mode, and a damping spring is fixedly connected between the pull rod and the guide sleeve.
As a modified scheme of the invention: translation mechanism is including fixing the motor II in the backup pad bottom, and motor II's the coaxial threaded rod that is fixed with of output shaft, and the threaded sleeve is equipped with the internal thread pipe of fixing in the carriage bottom on the threaded rod.
As a modified scheme of the invention: the damping guide mechanism comprises a guide rod horizontally fixed on the supporting plate, a sliding block sleeved on the guide rod in a sliding mode is fixed on the sliding frame, and a spring ring sleeved on the guide rod is fixedly connected between the sliding block and the sliding frame.
As a modified scheme of the invention: the fixing mechanism comprises a coaxial fixed threaded column driven by a motor IV and two threaded columns with opposite thread turning directions, a threaded sleeve block is sleeved on the threaded column in a threaded manner, a clamping plate is vertically fixed at the bottom of the threaded sleeve block, an arc groove is formed in the side wall of the clamping plate, and a sliding rod is slidably mounted between the clamping plates.
As a modified scheme of the invention: and a motor III is fixed on the bottom plate, and an output shaft of the motor III is coaxially fixed with a driving gear which is engaged and connected with a driven gear sleeved and fixed on the upright post.
Compared with the prior art, the invention has the beneficial effects that:
the pipe hoisting device can clamp and fix a pipe through the arranged fixing mechanism, so that the stability of the process is ensured, the arranged lifting mechanism can drive the supporting plate to flexibly lift at a vertical height, the hoisting and carrying of the pipe are ensured, the arranged stand column can realize that the steering supporting plate drives the fixing mechanism to circumferentially adjust the position, the translation mechanism can drive the fixing mechanism to transversely translate, the efficient and flexible hoisting of the pipe is realized, the working efficiency is effectively improved, the elastic damping effect in the hoisting process can be realized through the arranged elastic traction mechanism and the damping guide mechanism, and the stability of the hoisting of the pipe is obviously improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 is a partial perspective view of the present invention.
In the figure: 1-bottom plate, 2-driven gear, 3-motor I, 4-lifting frame, 5-spur rack, 6-sliding sleeve, 7-pull rod, 8-winding wheel, 9-guide rod, 10-supporting plate, 11-sliding frame, 12-motor II, 13-upright column, 14-driving gear, 15-motor III, 16-guide sleeve, 17-sliding block, 18-internal threaded pipe, 19-threaded rod, 20-spring ring, 21-frame, 22-damping spring, 23-steel wire rope, 24-threaded sleeve block, 25-motor IV, 26-threaded column, 27-clamping plate, 28-sliding rod, 29-arc groove and 30-transmission gear.
Detailed Description
The technical scheme of the patent is further described in detail by combining the following specific embodiments:
example 1
Referring to fig. 1-4, a tower crane for high stability pipes includes a base plate 1, a column 13 is rotatably mounted on the base plate 1, a sliding sleeve 6 is slidably sleeved on the column 13, a lifting frame 4 is fixed on the sliding sleeve 6, a lifting mechanism for driving the lifting frame 4 to vertically move is arranged on the lifting frame 4, a support plate 10 is horizontally fixed on a side wall of the lifting frame 4, an elastic traction mechanism is arranged between the support plate 10 and the sliding sleeve 6, a sliding frame 11 driven by the translation mechanism is slidably mounted on the support plate 10, a damping guide mechanism is arranged between the sliding frame 11 and the support plate 10, a winding wheel 8 is arranged on the support plate 10, a steel wire rope 23 is wound on the winding wheel 8, a frame 21 is fixed at the lower end of the steel wire rope 23, and a fixing mechanism for.
The fixing mechanism that this device set up carries out the centre gripping to tubular product fixedly, and the elevating system who sets up drives 4 vertical lifts of crane, realizes that backup pad 10 drives the height adjustment of fixing mechanism, realizes the jack-up effect of tubular product.
Specifically, elevating system includes motor I3 fixed with crane 4, and the output shaft drive of motor I3 is connected with drive gear 30, and the meshing is connected with spur rack 5 fixed at the stand 13 lateral wall on drive gear 30, and motor I3 that sets up drives drive gear 30 and rotates, and drive gear 30 realizes with spur rack 5 meshing transmission that crane 4 drives backup pad 10 vertical lift, realizes the jack-up effect of tubular product.
Further, this device is provided with elastic traction mechanism, including articulating the guide sleeve 16 on backup pad 10, slidable mounting has the pull rod 7 with sliding sleeve 6 articulated in the guide sleeve 16, fixedly connected with damping spring 22 between pull rod 7 and the guide sleeve 16, and pull rod 7 can slide relative to guide sleeve 16, and damping spring 22 elastic deformation realizes the shock attenuation effect to backup pad 10 lift process, ensures the steady lift of tubular product.
Example 2
On embodiment 1's basis, in addition, this device still is provided with translation mechanism, it is including fixing the motor II12 in backup pad 10 bottom, the coaxial threaded rod 19 that is fixed with of output shaft of motor II12, threaded sleeve is equipped with the internal thread pipe 18 of fixing in carriage 11 bottom on the threaded rod 19, motor II12 drive threaded rod 19 is rotatory, threaded rod 19 drives internal thread pipe 18 lateral shifting, and then realize that carriage 11 slides and drive the tubular product translation, make things convenient for the horizontal transport of tubular product to carry.
The shock attenuation guiding mechanism that this device set up includes that the level fixes guide arm 9 on backup pad 10, is fixed with the slider 17 that the slip cap was established on guide arm 9 on the carriage 11, and fixedly connected with cover establishes spring coil 20 on guide arm 9 between slider 17 and the carriage 11, and at carriage 11 lateral shifting's in-process, slider 17 slides along guide arm 9, and spring coil 20 elastic deformation cushions the shock attenuation, has guaranteed the stability when tubular product lateral shifting carries.
Further, this device's fixed establishment includes by motor IV25 driven coaxial fixed and screw thread revolve to two opposite screw thread post 26, and screw thread sleeve has 24 in screw thread post 26, and screw thread sleeve 24 bottom is vertical to be fixed with splint 27, and arc groove 29 has been seted up to splint 27 lateral wall, slidable mounting has slide bar 28 between splint 27, and motor IV25 can drive two screw thread posts 26 rotatory, and two screw thread posts 26 move the relative motion that realizes splint 27 through screw thread sleeve 24 that drives it on, realizes realizing fixing the tubular product centre gripping in arc groove 29, has guaranteed the steady clear of tubular product jack-up handling process.
In addition, a motor III15 is fixed on the bottom plate 1, an output shaft of the motor III15 is coaxially fixed on a driving gear 14, a driven gear 2 which is sleeved and fixed on the upright post 13 is connected with the driving gear 14 in a meshing manner, the motor III15 can drive the driving gear 14 to rotate, the driving gear 14 drives the driven gear 2 which is connected with the driving gear in a meshing manner to rotate, the driven gear 2 drives the upright post 13 to rotate, the supporting plate 10 is further used for driving a pipe on the fixing mechanism to rotate, and the lifting and transporting range of the pipe is effectively.
In conclusion, the pipe can be clamped and fixed through the arranged fixing mechanism, the stability of the process in the pipe can be guaranteed, the arranged lifting mechanism can drive the supporting plate 10 to flexibly lift at a vertical height, the lifting and carrying of the pipe can be guaranteed, the arranged upright post 13 can drive the fixing mechanism to be adjusted in the circumferential direction by turning the supporting plate 10, the translation mechanism can drive the fixing mechanism to transversely translate, the efficient and flexible lifting of the pipe can be achieved, the working efficiency is effectively improved, the elastic traction mechanism and the damping guide mechanism can achieve the elastic damping effect in the lifting process, and the smoothness of the lifting of the pipe is remarkably improved.
It should be noted that, although the present specification describes embodiments, each embodiment does not include only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art, and the above-mentioned embodiments only express the preferred embodiments of the technical solutions, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the claims of the technical solutions. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these changes and substitutions belong to the protection scope of the present invention. The protection scope of this technical solution patent should be subject to the appended claims.
Claims (7)
1. The tower crane for the high-stability pipes comprises a bottom plate (1), wherein a stand column (13) is rotatably mounted on the bottom plate (1), and is characterized in that a sliding sleeve (6) is sleeved on the stand column (13), a lifting frame (4) is fixedly arranged on the sliding sleeve (6), a lifting mechanism used for driving the lifting frame to vertically move is arranged on the lifting frame (4), a supporting plate (10) is horizontally fixed on the side wall of the lifting frame (4), an elastic traction mechanism is mounted between the supporting plate (10) and the sliding sleeve (6), a sliding frame (11) driven by a translation mechanism is slidably mounted on the supporting plate (10), a damping guide mechanism is mounted between the sliding frame (11) and the supporting plate (10), a winding wheel (8) is arranged on the supporting plate (10), a steel wire rope (23) is wound on the winding wheel (8), and a rack (21) is fixed at the lower, the rack (21) is provided with a fixing mechanism for clamping the pipe.
2. The tower crane for the high-stability pipe, as recited in claim 1, wherein the lifting mechanism comprises a motor I (3) fixed to the lifting frame (4), an output shaft of the motor I (3) is drivingly connected with a transmission gear (30), and the transmission gear (30) is engaged with a spur rack (5) fixed to a side wall of the column (13).
3. The tower crane for the high-stability pipes as claimed in claim 1 or 2, wherein the elastic traction mechanism comprises a guide sleeve (16) hinged on the support plate (10), a pull rod (7) hinged with the sliding sleeve (6) is slidably mounted in the guide sleeve (16), and a damping spring (22) is fixedly connected between the pull rod (7) and the guide sleeve (16).
4. The tower crane for the high-stability tubular products, as recited in claim 1, is characterized in that the translation mechanism comprises a motor II (12) fixed at the bottom of the support plate (10), a threaded rod (19) is coaxially fixed on the output shaft of the motor II (12), and an internal threaded tube (18) fixed at the bottom of the sliding frame (11) is sleeved on the threaded rod (19).
5. The tower crane for the high-stability pipe, as claimed in claim 4, wherein the shock-absorbing guide mechanism comprises a guide rod (9) horizontally fixed on the support plate (10), a sliding block (17) slidably sleeved on the guide rod (9) is fixed on the sliding frame (11), and a spring ring (20) sleeved on the guide rod (9) is fixedly connected between the sliding block (17) and the sliding frame (11).
6. The tower crane for the high-stability pipes as claimed in claim 1, wherein the fixing mechanism comprises two coaxially fixed threaded columns (26) driven by a motor IV (25) and having opposite thread turning directions, a threaded sleeve block (24) is sleeved on each threaded column (26), a clamping plate (27) is vertically fixed at the bottom of each threaded sleeve block (24), an arc groove (29) is formed in the side wall of each clamping plate (27), and a sliding rod (28) is slidably mounted between the clamping plates (27).
7. The tower crane for the high-stability pipe, according to claim 1, is characterized in that a motor III (15) is fixed on the bottom plate (1), and an output shaft of the motor III (15) is coaxially fixed with a driving gear (14) which is engaged and connected with a driven gear (2) sleeved and fixed on the upright column (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010216620.4A CN111268557A (en) | 2020-03-25 | 2020-03-25 | High stability tower crane for tubular product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010216620.4A CN111268557A (en) | 2020-03-25 | 2020-03-25 | High stability tower crane for tubular product |
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| Publication Number | Publication Date |
|---|---|
| CN111268557A true CN111268557A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010216620.4A Pending CN111268557A (en) | 2020-03-25 | 2020-03-25 | High stability tower crane for tubular product |
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Cited By (15)
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| CN111824984A (en) * | 2020-07-21 | 2020-10-27 | 余洋 | Pipeline embedding device for hydraulic engineering |
| CN112027930A (en) * | 2020-09-18 | 2020-12-04 | 齐梦婷 | Fixing device mechanism on cantilever crane |
| CN112047251A (en) * | 2020-08-15 | 2020-12-08 | 沈洪林 | Auxiliary type installation equipment for road and bridge embedded parts |
| CN112093683A (en) * | 2020-08-22 | 2020-12-18 | 张敏 | Material overhead hoist is used in bridge construction |
| CN112279123A (en) * | 2020-09-25 | 2021-01-29 | 浙江意力管业科技有限公司 | A gallows for construction of building tubular pile |
| CN112477734A (en) * | 2020-11-21 | 2021-03-12 | 中铁一局集团有限公司 | Construction pipeline moving device |
| CN112723177A (en) * | 2020-12-30 | 2021-04-30 | 佳木斯大学 | Computer network equipment installation device convenient to location is adjusted |
| CN113353785A (en) * | 2021-06-25 | 2021-09-07 | 重庆市凌鹤科技有限公司 | Conveying mechanism is used in spare part production in new energy automobile industry field |
| CN113501439A (en) * | 2021-09-09 | 2021-10-15 | 启东通润润滑液压设备有限公司 | Crane for machining oil filling pump |
| CN113524087A (en) * | 2021-08-04 | 2021-10-22 | 安徽欧波管业科技有限公司 | Auxiliary device for installing cooling water jacket |
| CN113636473A (en) * | 2021-08-10 | 2021-11-12 | 中国铁建重工集团股份有限公司 | Barrel pin shaft plate positioning device and method |
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| CN114314367A (en) * | 2021-12-31 | 2022-04-12 | 苏州科宏起重机械有限公司 | Small crane with anti-collision structure |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111824984B (en) * | 2020-07-21 | 2024-03-08 | 余洋 | Pipeline burying device for hydraulic engineering |
| CN111824984A (en) * | 2020-07-21 | 2020-10-27 | 余洋 | Pipeline embedding device for hydraulic engineering |
| CN112047251A (en) * | 2020-08-15 | 2020-12-08 | 沈洪林 | Auxiliary type installation equipment for road and bridge embedded parts |
| CN112093683A (en) * | 2020-08-22 | 2020-12-18 | 张敏 | Material overhead hoist is used in bridge construction |
| CN112027930A (en) * | 2020-09-18 | 2020-12-04 | 齐梦婷 | Fixing device mechanism on cantilever crane |
| CN112027930B (en) * | 2020-09-18 | 2021-04-13 | 浙江蓝天知识产权运营管理有限公司 | Fixing device mechanism on cantilever crane |
| CN112279123A (en) * | 2020-09-25 | 2021-01-29 | 浙江意力管业科技有限公司 | A gallows for construction of building tubular pile |
| CN112477734B (en) * | 2020-11-21 | 2021-12-24 | 中铁一局集团有限公司 | Construction pipeline moving device |
| CN112477734A (en) * | 2020-11-21 | 2021-03-12 | 中铁一局集团有限公司 | Construction pipeline moving device |
| CN112723177A (en) * | 2020-12-30 | 2021-04-30 | 佳木斯大学 | Computer network equipment installation device convenient to location is adjusted |
| CN113353785A (en) * | 2021-06-25 | 2021-09-07 | 重庆市凌鹤科技有限公司 | Conveying mechanism is used in spare part production in new energy automobile industry field |
| CN113353785B (en) * | 2021-06-25 | 2022-05-20 | 重庆市凌鹤科技有限公司 | Conveying mechanism is used in spare part production in new energy automobile industry field |
| CN113524087A (en) * | 2021-08-04 | 2021-10-22 | 安徽欧波管业科技有限公司 | Auxiliary device for installing cooling water jacket |
| CN113524087B (en) * | 2021-08-04 | 2022-03-08 | 安徽欧波管业科技有限公司 | Auxiliary device for installing cooling water jacket |
| CN113636473A (en) * | 2021-08-10 | 2021-11-12 | 中国铁建重工集团股份有限公司 | Barrel pin shaft plate positioning device and method |
| CN113636473B (en) * | 2021-08-10 | 2023-11-07 | 中国铁建重工集团股份有限公司 | Barrel pin shaft plate positioning device and method |
| CN113682974A (en) * | 2021-08-31 | 2021-11-23 | 山西建筑工程集团有限公司 | Tower crane that security performance is high maintains and uses elevating system |
| CN113501439B (en) * | 2021-09-09 | 2021-11-12 | 启东通润润滑液压设备有限公司 | Crane for machining oil filling pump |
| CN113501439A (en) * | 2021-09-09 | 2021-10-15 | 启东通润润滑液压设备有限公司 | Crane for machining oil filling pump |
| CN114314367A (en) * | 2021-12-31 | 2022-04-12 | 苏州科宏起重机械有限公司 | Small crane with anti-collision structure |
| CN116649059A (en) * | 2023-05-30 | 2023-08-29 | 安徽省农业技术推广总站 | Seedling lifting device and seedling lifting method for rape seedling transplanting |
| CN116649059B (en) * | 2023-05-30 | 2024-05-28 | 安徽省农业技术推广总站 | Seedling lifting device and seedling lifting method for rape seedling transplanting |
| CN118062724A (en) * | 2024-04-19 | 2024-05-24 | 中铁开发投资集团有限公司 | Lifting equipment for road construction |
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Application publication date: 20200612 |