CN105819348A - Lifting device - Google Patents
Lifting device Download PDFInfo
- Publication number
- CN105819348A CN105819348A CN201610318241.XA CN201610318241A CN105819348A CN 105819348 A CN105819348 A CN 105819348A CN 201610318241 A CN201610318241 A CN 201610318241A CN 105819348 A CN105819348 A CN 105819348A
- Authority
- CN
- China
- Prior art keywords
- hoist cable
- pulley
- flexible hoist
- hanging beam
- flexible
- 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
- B66C23/18—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
-
- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/122—Sling or load protectors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a lifting device, and relates to the technical field of object lifting. The lifting device comprises a first lifting beam, a second lifting beam, a first flexible lifting rope, a second flexible lifting rope, a third flexible lifting rope, a joint, a first pulley and a second pulley. One end of the first lifting beam is fixedly connected with lifting equipment, and the other end is connected with the second lifting beam; the first pulley is mounted on the first lifting beam; the second pulley is mounted on the second lifting beam; the joint is used for connecting the first flexible lifting rope, the second flexible lifting rope and the third flexible lifting rope; one end of the first flexible lifting rope is used for connecting with a lifted object, and the other end is connected with the joint; the first flexible lifting rope is supported by the first pulley; one end of the second flexible lifting rope is used for connecting with the lifted object, and the other end is connected with the joint; the second flexible lifting rope is supported by the second pulley; and one end of the third flexible lifting rope is connected with the joint, and the other end is connected with the lifting equipment. The lifting device has the beneficial effect of capability of guaranteeing a lifting angle of the lifted object.
Description
Technical field
The present invention relates to article hoisting technology field, be specifically related to a kind of boom hoisting.
Background technology
In terms of the restraint locking of aviation pallet course, typically use the lifting appliance of more than two to lift by crane both at home and abroad in terms of equipment synchronous hoisting, be so easily caused the poor synchronization of lifting, docking angular adjustment difficulty is big, relatively costly, less economical, and be easily subject to external condition and limit.
Summary of the invention
It is an object of the invention to provide a kind of boom hoisting, with the problem solved or at least alleviate at least one place in the presence of background technology.
The technical solution used in the present invention is: provide a kind of boom hoisting, comprise the first hanging beam, the second hanging beam, the first flexible hoist cable, the second flexible hoist cable, the 3rd flexible hoist cable, joint, the first pulley and the second pulley, wherein, one end of described first hanging beam is fixing with lifting appliance to be connected, and the other end is connected with described second hanging beam;Described first pulley is arranged on described first hanging beam, and described second pulley is arranged on described second hanging beam;Described joint is used for connecting the described first flexible hoist cable, the second flexible hoist cable and the 3rd flexible hoist cable;One end of described first flexible hoist cable is used for connecting hanging object, and the other end connects described joint, and the described first flexible hoist cable is by described first pulley support;One end of described second flexible hoist cable is used for connecting hanging object, and the other end connects described joint, and the described second flexible hoist cable is by described second pulley support;One end of described 3rd flexible hoist cable connects described joint, and the other end connects lifting appliance.
Preferably, described first hanging beam is provided with driving means with the connection end of described second hanging beam, and described second hanging beam can slide in the line direction of described first pulley and the second pulley by the most described first hanging beam.
Preferably, described driving means is pressurized strut, and the piston rod of described pressurized strut is connected with one end of described second hanging beam, and the other end is fixing with described first hanging beam to be connected.
Preferably, described boom hoisting also comprises chute beam, and described chute beam is hollow pipe, and one end is connected with described first hanging beam, described pressurized strut is arranged on the inside of described chute beam, and the piston rod of inside and described pressurized strut that described chute beam is stretched in one end of described second hanging beam is connected.
Preferably, described driving means is set to pinion and rack, and described gear is arranged on described first hanging beam, and described tooth bar is fixing with described second hanging beam to be connected.
Preferably, described first pulley is provided with multiple, and multiple described first pulleys are set to a row along the length direction of described first hanging beam.
Preferably, the wheel face that described first pulley contacts with the described first flexible hoist cable is provided with nonmetal set, and the wheel face that described second pulley contacts with the described second flexible hoist cable is provided with nonmetal set.
Preferably, described boom hoisting also comprises suspension hook;Described first flexible hoist cable and the second flexible hoist cable are provided with described suspension hook with the described connection end by lifting article.
Preferably, described first flexible hoist cable, the second flexible hoist cable and the 3rd flexible hoist cable are disposed as cable wire, described first pulley and the second pulley are provided with anti-cable wire and come off ring.
Preferably, the described first flexible hoist cable is divided into orthogonal two sections with described first pulley for the strong point;Described second flexible hoist cable is divided into orthogonal two sections with described second pulley for the strong point.
The beneficial effects of the present invention is: the boom hoisting of the present invention is by the first flexible hoist cable, the second flexible hoist cable lifting article, first flexible hoist cable, the second flexible hoist cable are simultaneously connected with joint, 3rd flexible hoist cable passes through jointing, pull the first flexible hoist cable and the second flexible hoist cable, it is possible to ensure the lifting angle of hanging object simultaneously.
The connection end of the first hanging beam and the second hanging beam is provided with driving means, described second hanging beam can slide in the line direction of described first pulley and the second pulley by the most described first hanging beam, the convenient lifting angle regulating hanging object, conveniently realizes the docking of hanging object.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the boom hoisting of one embodiment of the invention.
Wherein, 1-suspension hook, 2-the first hanging beam, 9-the second hanging beam, the flexible hoist cable of 5-first, the flexible hoist cable of 11-second, the flexible hoist cable of 3-the 3rd, 4-joint, 6-the first pulley, 10-the second pulley, 7-pressurized strut, 8-chute beam, 12-hanging object.
Detailed description of the invention
Clearer for the purpose making the present invention implement, technical scheme and advantage, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, the most same or similar label represents same or similar element or has the element of same or like function.Described embodiment is a part of embodiment of the present invention rather than whole embodiments.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " orientation or the position relationship of the instruction such as " center ", " longitudinally ", " laterally ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limiting the scope of the invention.
As shown in Figure 1, a kind of boom hoisting, comprise the first flexible hoist cable of hanging beam the 2, second hanging beam 9, first flexible hoist cable 3 of 5, second flexible hoist cable the 11, the 3rd, joint the 4, first pulley 6 and the second pulley 10, wherein, one end of first hanging beam 2 is fixing with lifting appliance to be connected, and the other end and the second hanging beam 9 connect;First pulley 6 is arranged on the first hanging beam 2, and the second pulley 10 is arranged on the second hanging beam 9;Joint 4 is for connecting the first flexible flexible hoist cable of hoist cable 5, second 11 and the 3rd flexible hoist cable 3;One end of first flexible hoist cable 5 is used for connecting hanging object, other end jointing 4, and the first flexible hoist cable 5 is supported by the first pulley 6;One end of second flexible hoist cable 11 is used for connecting hanging object, other end jointing 4, and the second flexible hoist cable 11 is supported by the second pulley 10;One end jointing 4 of the 3rd flexible hoist cable 3, the other end connects lifting appliance.
When needs lifting hanging object 12, the two ends of hanging object 12 are connected by the first flexible hoist cable 5 and the second flexible hoist cable 11, and according to the predetermined flexible hoist cable of lifting angle adjustment first 5 and the length of the second flexible hoist cable 11, joint 4 is pulled by the 3rd flexible hoist cable 3, joint 4 drives the first flexible hoist cable 5 and the second flexible hoist cable 11 to move simultaneously, it is ensured that the initial preset angle of hanging object 12.
The boom hoisting of the present invention lifts by crane article by the first flexible flexible hoist cable 11 of hoist cable 5, second, the first flexible flexible hoist cable 11 of hoist cable 5, second is simultaneously connected with joint 4,3rd flexible hoist cable 3 is by jointing 4, pull the first flexible hoist cable 5 and the second flexible hoist cable 11, it is possible to ensure lifting stability and the lifting angle of hanging object simultaneously.
In the present embodiment, the connection end of the first hanging beam 2 and the second hanging beam 9 is provided with driving means, and the second hanging beam 9 can slide in the line direction of the first pulley 6 and the second pulley 10 by relative first hanging beam 2.When making the second hanging beam 9 away from the first hanging beam 2 by driving means, the one end of the hanging object that the second flexible hoist cable 11 connects is lifted;When driving means makes the second hanging beam 9 near the first hanging beam 2, the one end of the hanging object that the second flexible hoist cable 11 connects declines, and has an advantage in that, the convenient lifting angle regulating hanging object 12 conveniently realizes the docking of hanging object 12.After hanging object is the most liftoff, due to the weight of hanging object cause the first flexible hoist cable 5 and the second flexible hoist cable 11 produce certain flexible after, the position of the second hanging beam 9 can be regulated by driving means, thus regulate the lifting angle of hanging object in real time, it is achieved rapid abutting joint.
In the present embodiment, driving means is pressurized strut 7, and the piston rod of pressurized strut 7 and one end of the second hanging beam 9 connect, the other end and the first fixing connection of hanging beam 2.Pressurized strut 7 is hydraulic actuator, has an advantage in that, by the Flow-rate adjustment to hydraulic actuator, it is possible to achieve the accurate adjustment to the position of the second hanging beam 9.
It is understandable that, the connection end of the first hanging beam 2 and the second hanging beam 9 can make hollow structure, and the second hanging beam 9 inserts the inside of the first hanging beam 2, and passes through positive, positive can ensure that the second hanging beam 9 slides at the length direction of the first hanging beam 2, without occurring rotating.Can be in the processing of the side of the first hanging beam 2 with installing port, installing port is for being arranged on pressurized strut 7 between the first hanging beam 2 and the second hanging beam 9.
In the present embodiment, boom hoisting also comprises chute beam 8, chute beam 8 is hollow pipe, one end is provided with Flange joint dish, Flange joint dish and the first fixing connection of hanging beam 2, pressurized strut 7 is arranged on the inside of chute beam 8, and the piston rod of inside and pressurized strut 7 that chute beam 8 is stretched in one end of the second hanging beam 9 is connected.
It is understood that driving means may be arranged as pinion and rack, gear is arranged on the first hanging beam 2, and is driven by motor, tooth bar and the second fixing connection of hanging beam 9.Tooth bar is driven by gear, it is possible to achieve the position adjustments of the second hanging beam 9.It is understood that the connection end of the second hanging beam 9 and the first hanging beam 2 directly can also be processed one section of tooth bar.
It is understood that the first pulley 6 is provided with multiple, multiple first pulleys 6 are set to a row along the length direction of the first hanging beam 2.Have an advantage in that, the position of the first flexible hoist cable 5 according to the size of hanging object, can be regulated, when the first flexible hoist cable 5 is supported by the first pulley 6 of diverse location, distance between first flexible hoist cable 5 and the second flexible hoist cable 11 will change, thus adapt to various sizes of hanging object.
It is understood that the wheel face that the first pulley 6 contacts with the first flexible hoist cable 5 can be provided with nonmetal set, the wheel face that the second pulley 10 contacts with the second flexible hoist cable 11 can be provided with nonmetal set.Have an advantage in that, it is possible to reduce flexible hoist cable and the friction of pulley contact faces, pulley can also be avoided to produce corrosion it addition, install nonmetal set additional.In the present embodiment, described nonmetal set is nylon jacket, has an advantage in that, nylon hardness is higher, is conducive to carrying high abrasion resistance strength.
In the present embodiment, boom hoisting also comprises suspension hook 1;First flexible hoist cable 5 and the second flexible hoist cable 11 are provided with suspension hook 1 with by the connection end of lifting article.Have an advantage in that, the convenient connection realizing flexible hoist cable and hanging object.
In the present embodiment, the first flexible flexible hoist cable of hoist cable 5, second 11 and the 3rd flexible hoist cable 3 are disposed as cable wire, the first pulley 6 and the second pulley 10 are provided with anti-cable wire and come off ring.Having an advantage in that, slip-off preventing ring is possible to prevent cable wire to deviate from from pulley, is conducive to improving flexible hoist cable and is connected with the quick of hanging object.
It is understood that the first flexible hoist cable 5 and the second flexible hoist cable 11 may be arranged as nonmetal hoist cable, having an advantage in that, when hoist cable contacts with hanging object, hoist cable will not produce extruding to hanging object, is conducive to protecting the surface of hanging object.
In the present embodiment, the first flexible hoist cable 5 is divided into orthogonal two sections with the first pulley 6 for the strong point;Second flexible hoist cable 11 is divided into orthogonal two sections with the second pulley 10 for the strong point.Having an advantage in that, according to mechanical analysis, under the lifting state shown in accompanying drawing 1, suspension hook 1 is subjected only to the pulling force of vertical direction, and suspension hook 1 stress is steady, is conducive to improving hoisting weight and lifting safety.
It is understood that the boom hoisting of the present invention is when lifting by crane regular object, it is also possible to only lifted by crane by the first flexible hoist cable 5, have an advantage in that, easy to connect, can be by hook 1 directly mounting by lifting article.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit.Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent;And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a boom hoisting, it is characterized in that: comprise the first hanging beam (2), the second hanging beam (9), the first flexible hoist cable (5), the second flexible hoist cable (11), the 3rd flexible hoist cable (3), joint (4), the first pulley (6) and the second pulley (10), wherein
One end of described first hanging beam (2) is fixing with lifting appliance to be connected, and the other end is connected with described second hanging beam (9);
Described first pulley (6) is arranged on described first hanging beam (2), and described second pulley (10) is arranged on described second hanging beam (9);
Described joint (4) is used for connecting the described first flexible hoist cable (5), the second flexible hoist cable (11) and the 3rd flexible hoist cable (3);
One end of described first flexible hoist cable (5) is used for connecting hanging object (12), and the other end connects described joint (4), and the described first flexible hoist cable (5) is supported by described first pulley (6);
One end of described second flexible hoist cable (11) is used for connecting hanging object, and the other end connects described joint (4), and the described second flexible hoist cable (11) is supported by described second pulley (10);
One end of described 3rd flexible hoist cable (3) connects described joint (4), and the other end connects lifting appliance.
2. boom hoisting as claimed in claim 1, it is characterized in that: described first hanging beam (2) is provided with driving means with the connection end of described second hanging beam (9), described second hanging beam (9) can the most described first hanging beam (2) be slided in the line direction of described first pulley (6) with the second pulley (10).
3. boom hoisting as claimed in claim 2, it is characterized in that: described driving means is pressurized strut (7), the piston rod of described pressurized strut (7) is connected with one end of described second hanging beam (9), and the other end is fixing with described first hanging beam (2) to be connected.
4. boom hoisting as claimed in claim 3, it is characterized in that: described boom hoisting also comprises chute beam (8), described chute beam (8) is hollow pipe, one end is connected with described first hanging beam (2), described pressurized strut (7) is arranged on the inside of described chute beam (8), and the piston rod of inside and described pressurized strut (7) that described chute beam (8) is stretched in one end of described second hanging beam (9) is connected.
5. boom hoisting as claimed in claim 2, it is characterised in that: described driving means is set to pinion and rack, and described gear is arranged on described first hanging beam (2), and described tooth bar is fixing with described second hanging beam (9) to be connected.
6. boom hoisting as claimed in claim 1, it is characterised in that: described first pulley (6) is provided with multiple, and multiple described first pulleys (6) are set to a row along the length direction of described first hanging beam (2).
7. boom hoisting as claimed in claim 1, it is characterized in that: the wheel face that described first pulley (6) contacts with the described first flexible hoist cable (5) is provided with nonmetal set, the wheel face that described second pulley (10) contacts with the described second flexible hoist cable (11) is provided with nonmetal set.
8. boom hoisting as claimed in claim 1, it is characterised in that: described boom hoisting also comprises suspension hook (1);Described first flexible hoist cable (5) and the second flexible hoist cable (11) are provided with described suspension hook (1) with the described connection end by lifting article.
9. boom hoisting as claimed in claim 1, it is characterized in that: described first flexible hoist cable (5), the second flexible hoist cable (11) and the 3rd flexible hoist cable (3) are disposed as cable wire, described first pulley (6) and the second pulley (10) are provided with anti-cable wire and come off ring.
10. the boom hoisting as described in any one of claim 1 to 8, it is characterised in that: the described first flexible hoist cable (5) is that the strong point is divided into orthogonal two sections with described first pulley (6);Described second flexible hoist cable (11) is that the strong point is divided into orthogonal two sections with described second pulley (10).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610318241.XA CN105819348B (en) | 2016-05-13 | 2016-05-13 | A kind of boom hoisting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610318241.XA CN105819348B (en) | 2016-05-13 | 2016-05-13 | A kind of boom hoisting |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105819348A true CN105819348A (en) | 2016-08-03 |
CN105819348B CN105819348B (en) | 2019-04-23 |
Family
ID=56529517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610318241.XA Active CN105819348B (en) | 2016-05-13 | 2016-05-13 | A kind of boom hoisting |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105819348B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113585099A (en) * | 2021-09-28 | 2021-11-02 | 中交投资南京有限公司 | Deviation monitoring system for double-span synchronous tension bridge girder erection machine and construction method for reinforced concrete composite bridge |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU770994A1 (en) * | 1978-12-07 | 1980-10-15 | Войсковая Часть 11284 | Cargo crossbeam |
FR2470749A1 (en) * | 1979-12-07 | 1981-06-12 | Chainette Atel | Self balancing lifting yoke for asymmetric loads - has T=shaped frame and has hydraulic cylinder suspension cables to adjust length |
EP0551233A1 (en) * | 1992-01-10 | 1993-07-14 | Thomson-Brandt Armements | Tilt system for a suspended object with a suspension line tension roller |
JPH10218549A (en) * | 1997-02-04 | 1998-08-18 | Daisue Kensetsu Kk | Lifting device |
CN201010442Y (en) * | 2006-10-10 | 2008-01-23 | 宋万民 | Device for automatically regulating container level |
CN104444766A (en) * | 2014-12-03 | 2015-03-25 | 国家电网公司 | Lifting device for insulating sleeve of power transformer |
-
2016
- 2016-05-13 CN CN201610318241.XA patent/CN105819348B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU770994A1 (en) * | 1978-12-07 | 1980-10-15 | Войсковая Часть 11284 | Cargo crossbeam |
FR2470749A1 (en) * | 1979-12-07 | 1981-06-12 | Chainette Atel | Self balancing lifting yoke for asymmetric loads - has T=shaped frame and has hydraulic cylinder suspension cables to adjust length |
EP0551233A1 (en) * | 1992-01-10 | 1993-07-14 | Thomson-Brandt Armements | Tilt system for a suspended object with a suspension line tension roller |
JPH10218549A (en) * | 1997-02-04 | 1998-08-18 | Daisue Kensetsu Kk | Lifting device |
CN201010442Y (en) * | 2006-10-10 | 2008-01-23 | 宋万民 | Device for automatically regulating container level |
CN104444766A (en) * | 2014-12-03 | 2015-03-25 | 国家电网公司 | Lifting device for insulating sleeve of power transformer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113585099A (en) * | 2021-09-28 | 2021-11-02 | 中交投资南京有限公司 | Deviation monitoring system for double-span synchronous tension bridge girder erection machine and construction method for reinforced concrete composite bridge |
Also Published As
Publication number | Publication date |
---|---|
CN105819348B (en) | 2019-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205076661U (en) | Electronic centering hoist is restrainted to steel pipe | |
CN106882325B (en) | A kind of split type rudder paddle diversion pipe hanging method | |
CN104495603B (en) | A kind of adjustable hoisting bracket | |
CN107337125B (en) | Flexible sliding platform girder steel handling apparatus and girder steel handling method | |
CN107434210A (en) | A kind of ship suspension hook | |
CN117208754B (en) | Lifting device for special-shaped building structure | |
CN103449315A (en) | Crane lifting device | |
CN201746270U (en) | Hoisting mechanism of crane | |
CN105775990A (en) | Lifting appliance of power transmission system assembly for flexible connection | |
CN108275561A (en) | A kind of active lower axle rotary hoisting tool | |
CN103879879B (en) | A kind of hanging apparatus | |
CN105819348A (en) | Lifting device | |
CN204096935U (en) | Lifting mechanism and use the hoisting crane of this lifting mechanism | |
CN204847923U (en) | Hoist anti -swing puts device | |
EP4028349B1 (en) | A combination comprising a crane and a load guiding arrangement arranged for mounting to the crane and use of a load guiding arrangement in such a combination | |
CN211310538U (en) | Balance weight inserted type hoisting device | |
CN107675890A (en) | A kind of method at aerial regulation steel truss mast-up angle of inclination | |
CN205442379U (en) | Balanced sling | |
CN105775993A (en) | Device for hoisting steel tubes | |
CN103588082A (en) | Lifting appliance and use method thereof | |
CN214298882U (en) | Pipeline hoisting device | |
CN206088769U (en) | Portal slewing crane's four rope hoists | |
CN109650247A (en) | Hook range variable suspender | |
CN105438958B (en) | Rotating lifting steel-fastening structure component boom hoisting | |
CN205990172U (en) | A kind of multi-functional lifting balance beam structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |