CN117023429B - Folding-preventing device for rocker arm holding pole - Google Patents
Folding-preventing device for rocker arm holding pole Download PDFInfo
- Publication number
- CN117023429B CN117023429B CN202311117976.2A CN202311117976A CN117023429B CN 117023429 B CN117023429 B CN 117023429B CN 202311117976 A CN202311117976 A CN 202311117976A CN 117023429 B CN117023429 B CN 117023429B
- Authority
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- China
- Prior art keywords
- pole
- mast
- folding
- rocker arm
- holding
- 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.)
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 230000002742 anti-folding effect Effects 0.000 claims description 23
- 230000002265 prevention Effects 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- B66C23/88—Safety gear
-
- 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
-
- 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
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
Abstract
The utility model relates to a rocker arm pole folding preventing device which is arranged at the top of a pole holding mast, wherein two sides of the pole holding mast are rotatably connected with pole holding rockers, the folding preventing device comprises folding preventing pole heads and a heave system, and the folding preventing pole heads are connected at the top of the pole holding mast and extend out relative to the height direction and the two side directions of the pole holding mast; the fluctuation system comprises a fixed pulley block, fluctuation steel wire ropes and a movable pulley block, wherein the fixed pulley block is arranged at the end parts of two sides of the folding-prevention pole head, the movable pulley block is arranged at the top of pole holding rocker arms on two sides of the pole holding mast, and the fluctuation steel wire ropes are upwards introduced to the fixed pulley blocks on two sides of the folding-prevention pole head from the bottom of the pole holding mast and respectively pass through the movable pulley blocks on the pole holding rocker arms on two sides of the pole holding mast. Compared with the prior art, the utility model can avoid the collision caused by the fact that the rocker arm is automatically folded towards the middle mast due to the influence of the dead weight of the steel wire rope led to the ground by the fixed pulley, improves the construction safety, and prevents the potential safety hazard of misoperation of the rocker arm.
Description
Technical Field
The utility model relates to the field of rocker arm holding pole structures, in particular to a rocker arm holding pole folding-preventing device.
Background
At present, the length of a mast of the existing double-rocker-arm holding pole is basically consistent with that of a rocker arm, a top section of the mast is folded inwards for a variable cross section, and a fixed pulley block arranged at the top section of the mast is positioned inside the mast. In the tower-assembling construction process, the fluctuation of the pole-holding rocker arm mainly controls a steel wire rope to pass through a fluctuation pulley block between the mast and the rocker arm end part, and the steel wire rope is led down to the ground from the top of the pole-holding mast for grinding. When the tower is assembled to the cross arm, the top of the mast is about 100m, and the length of the fluctuation steel wire rope hanging in the air is correspondingly 100m, so that the dead weight of the steel wire rope is large. The self-weight of the steel wire rope affects the rocker arm, the multiplying power of the pulley block of the heave system is amplified, so that inward traction force is caused on the rocker arm, when the rocker arm gradually folds towards the pole mast, the outward component force generated by the self weight of the rocker arm gradually counteracts the traction force generated by the self weight of the steel wire rope, and a force for automatically folding the pole rocker arm inwards is generated, namely about 200-1500N, so that the pole rocker arm is suddenly folded inwards. The uncontrolled automatic inward folding action can cause mechanical injury to operators at high positions on the iron tower, causes potential safety hazards such as injury and falling of the operators, and is extremely easy to cause safety accidents.
Most of the existing measures for preventing the pole from folding are that an anti-collision device is arranged on a pole mast, such as the spring buffering anti-collision device disclosed by the utility model with an authorized bulletin number of CN216430374U, and the spring buffering anti-collision device is mainly used for preventing a rocker arm from being crashed to the pole mast after being folded automatically, so that the whole pole system is damaged and unstable. The anti-collision device can only prevent the rocker arm from being crashed violently and can not effectively avoid the automatic folding condition of the rocker arm.
Disclosure of Invention
The utility model aims to overcome the defects that the prior art has potential safety hazards such as mechanical injury and the like and high construction safety risk caused by the automatic folding and collision of the rocker due to the dead weight of a down-lead wire rope suspended in the air and the magnification of a pulley block when the rocker approaches a mast.
The aim of the utility model can be achieved by the following technical scheme:
the rocker arm pole folding preventing device is arranged at the top of the pole mast, two sides of the pole mast are rotatably connected with pole rocking arms, the folding preventing device comprises a folding preventing pole head and a heave system, and the folding preventing pole head is connected at the top of the pole mast and extends out relative to the height direction and the two side directions of the pole mast;
the fluctuation system comprises a fixed pulley block, fluctuation steel wire ropes and a movable pulley block, wherein the fixed pulley block is arranged at the end parts of two sides of the folding prevention pole head, the movable pulley block is arranged at the top of pole holding rocker arms on two sides of a pole holding mast, and the fluctuation steel wire ropes are upwards introduced to the fixed pulley blocks on two sides of the folding prevention pole head from the bottom of the pole holding mast and respectively penetrate through the movable pulley blocks of the pole holding rocker arms on two sides of the pole holding mast.
Further, the anti-folding pole head comprises a mast heightening part and a top widening part, wherein the mast heightening part is connected to the top of the pole mast and extends out relative to the height direction of the pole mast; the top widening part is connected with the outer walls of the two sides of the top end of the mast heightening part and extends out relative to the two sides of the mast heightening part; the fixed pulley block is arranged at the end parts of the two sides of the widening part of the top in the extending direction.
Further, the plug widening part extends to two sides of the mast heightening part in a direction perpendicular to the central axis of the mast heightening part.
Further, the parts of the widening parts of the plug, which extend in the directions of the two sides of the heightened part of the mast, are positioned on the same straight line.
Further, the anti-folding locking rod head is of a T-shaped structure.
Further, the anti-folding locking rod head is of an integrated structure.
Further, the bottom of the anti-folding pole head is fixedly connected with the top of the pole mast.
Further, the bottom end of the pole rocker arm is connected with the pole mast through a hinge.
Further, the fluctuation steel wire rope amplifies the pulling force of the holding pole rocker arm through the fixed pulley block and the movable pulley block.
Further, the pole holding rocker arm is driven by the fluctuation steel wire rope to rotate close to or rotate away from the pole holding mast by taking a rotating point at the bottom of the pole holding mast as a circle.
Compared with the prior art, the utility model has the following advantages:
(1) According to the scheme, the anti-folding pole head extends to the height direction of the pole mast, so that heightening is realized, the height of a fixed pulley of a fluctuation system is increased, the horizontal component of the tension of a fluctuation steel wire rope is smaller in the process of folding the pole rocker arm close to the pole mast, the fixed pulley block, the movable pulley block and the fluctuation steel wire rope between the fixed pulley block and the movable pulley block are in an almost vertical state, the inward folding horizontal tension of the pole rocker arm can be ignored, the inward folding force of the pole rocker arm is greatly reduced, and the safety risk in the hoisting in-place process is reduced;
the anti-folding locking rod heads extend towards the two sides of the pole mast, the fixed pulley block is arranged outside and exceeds the vertical outer edge of the mast, so that the fixed pulley block and the movable pulley block of the fluctuation system and a fluctuation steel wire rope between the fixed pulley block and the movable pulley block are in a nearly vertical state just before the folding angle of the pole rocker arm is reached, and the top of the pole rocker arm can be slightly inclined outwards; and at the moment, if the holding pole rocker arm is continuously folded inwards, a fluctuation steel wire rope between a fixed pulley block and a movable pulley block of the fluctuation system is in a negative angle, the horizontal component force of the tension generated by the dead weight influence of the fluctuation steel wire rope and the magnification amplification of the pulley block of the fluctuation system is the outwards tension along the movable pulley block, so that the inertia force of the inward folding of the holding pole rocker arm is counteracted, and the function of preventing the rocker arm from being folded automatically is realized.
(2) In the scheme, the folding prevention pole head and the pole holding rocker arm are of horizontal symmetrical structures based on the pole holding mast, and the whole stress is balanced, stable and reliable.
Drawings
Fig. 1 is a schematic front view of a rocker arm pole folding prevention device according to an embodiment of the present utility model;
fig. 2 is a schematic front view of a rocker arm pole anti-folding device in a folding angle state according to an embodiment of the present utility model;
fig. 3 is a schematic side view of an anti-folding and locking rod head of the anti-folding device for a rocker arm locking rod provided in an embodiment of the utility model;
in the figure, 1, an anti-folding locking rod head, 12, a plug widening part, 13, a mast heightening part, 2, a holding rod mast, 3, a holding rod rocker arm, 4, a heave system, 41, a fixed pulley block, 42, a heave steel wire rope, 43, a movable pulley block and 5, an included angle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Example 1
As shown in fig. 1-3, the present embodiment provides a rocker arm pole folding preventing device, which is disposed at the top of a pole mast 2, wherein two sides of the pole mast 2 are rotatably connected with pole rocker arms 3, the folding preventing device comprises a folding preventing pole head 1 and a heave system 4, and the folding preventing pole head 1 is connected at the top of the pole mast 2 and extends relative to the height direction and two sides of the pole mast 2;
the heave system 4 comprises a fixed pulley block 41, heave steel wire ropes 42 and a movable pulley block 43, wherein the fixed pulley block 41 is arranged at the end parts of two sides of the anti-folding pole head 1, the movable pulley block 43 is arranged at the top of the pole holding rocker arms 3 at two sides of the pole holding mast 2, and the heave steel wire ropes 42 are upwards introduced to the fixed pulley blocks 41 at two sides of the anti-folding pole head 1 from the bottom of the pole holding mast 2 and respectively pass through the movable pulley blocks 43 of the pole holding rocker arms 3 at two sides of the pole holding mast 2.
The fluctuating steel wire rope 42 amplifies the pulling force to the holding pole rocker arm 3 through the fixed pulley block 41 and the movable pulley block 43, and the holding pole rocker arm 3 is driven by the fluctuating steel wire rope 42 to be circular with the rotating point at the bottom of the holding pole mast 2, so as to rotate close to or rotate away from the holding pole mast 2.
An included angle a is formed between the pole rocker arm 3 and the pole mast 2, and a limit angle of the included angle 5, which is about to be automatically folded in the folding process of the pole rocker arm 3 to the pole mast 2, is called a folding angle.
According to the scheme, the anti-folding pole head 1 extends to the height direction of the pole mast 2, so that heightening is realized, the height of a fixed pulley of the fluctuation system 4 is increased, the horizontal component of the tension of the fluctuation steel wire rope 42 is smaller in the process that the pole rocker 3 is folded to be close to the pole mast 2, the fixed pulley block, the movable pulley block and the fluctuation steel wire rope 42 between the fixed pulley block and the movable pulley block are in an almost vertical state, the horizontal tension of inward folding of the pole rocker 3 is negligible, the inward folding force of the pole rocker is greatly reduced, and the safety risk in the hoisting in-place process is reduced;
the anti-folding locking rod head 1 extends towards the two sides of the pole mast 2, the fixed pulley block is arranged outside and exceeds the vertical outer edge of the mast, so that the pole rocker 3 is in a nearly vertical state just before reaching the folding angle, and the fixed pulley block 41, the movable pulley block 43 and the fluctuation steel wire rope 42 between the fluctuation system can be slightly inclined outwards at the top; and at this time, if the arm of the pole rocker 3 continues to fold inwards, the fluctuating steel wire rope 42 between the fixed pulley block 41 and the movable pulley block 43 of the fluctuating system 4 is in a negative angle, the horizontal component of the tensile force generated by the influence of the dead weight of the fluctuating steel wire rope 42 and the magnification of the pulley block of the fluctuating system 4 is the tensile force outwards along the movable pulley block 43, so as to offset the inertia force of the inward folding of the pole rocker 3, and realize the function of preventing the rocker from folding automatically.
Specifically, the anti-folding pole head 1 comprises a mast heightening part 13 and a top widening part 12, wherein the mast heightening part 13 is connected to the top of the pole holding mast 2 and extends out relative to the height direction of the pole holding mast 2; the plug widening part 12 is connected with the outer walls of the two sides of the top end of the mast heightening part 13 and extends out relative to the two sides of the mast heightening part 13; the fixed pulley block 41 is mounted at both side projecting direction end portions of the plug widening portion 12.
The horizontal widening of the top widening 12 is preferably greater than the horizontal extension of the added connection between the boom mast 2 and the boom arm 3.
Preferably, the plug widening part 12 extends to two sides of the mast heightening part 13 in a direction perpendicular to the central axis of the mast heightening part 13, so that the anti-folding locking rod head 1 is of a T-shaped structure, and the anti-folding locking rod head 1 extends in the height direction and the two side directions relative to the derrick mast 2 in a mode of most saving materials and stabilizing the structure.
Preferably, the parts of the plug widening part 12 extending in the two directions relative to the two sides of the mast heightening part 13 are positioned on the same straight line, so that the horizontal forces generated by the fluctuation steel wire rope 42 can be mutually counteracted in the process of driving the pole rocker arm 3 to rotate, and the whole pole is kept balanced.
Further preferably, the holding pole mast 2 and the holding pole rocker arms 3 on two sides of the holding pole mast 2 are all positioned on the same plane, so that the whole stress is balanced.
The anti-folding locking rod head 1 is preferably of an integrally formed structure, and is more stable.
Optionally, the bottom of the anti-folding pole head 1 is fixedly connected with the top of the pole mast 2.
The bottom of the holding pole rocker arm 3 is connected with the holding pole mast 2 through a hinge, so that the bottom of the holding pole rocker arm 3 is rotatably connected with the holding pole mast 2.
As an example, one use process of the rocker arm pole folding prevention device is as follows: the mast heightening part 13 is fixedly arranged at the top end of the derrick mast 2, the plug widening part 12 is directly arranged on the outer walls of the two sides of the top end of the mast heightening part 13, the derrick rocker 3 and the bottom of the derrick mast 2 are fixedly arranged through hinges, the movable pulley block 43 of the fluctuation system 4 is arranged at the end of the derrick rocker 3 before the derrick rocker 3 starts to fluctuation, the fixed pulley block 41 of the fluctuation system 4 is arranged at the two outer sides of the plug widening part 12, the fluctuation steel wire rope 42 is introduced into the fixed pulley block 41 of the fluctuation system 4 on the top widening part 12 from the ground, and the fluctuation system 4 is formed by penetrating and winding the movable pulley block 43 of the fluctuation system 4 according to a set steel wire rope penetrating and winding mode, so that the fluctuation system 4 is controlled, and the derrick rocker 3 is rotated to be close to or rotated away from the top of the derrick rocker 3 by taking the bottom hinging point of the derrick rocker 3 as the circle center, so that the fluctuation action of the derrick is realized.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (7)
1. The anti-folding device for the rocker arm pole is arranged at the top of a pole holding mast (2), and pole holding rockers (3) are rotatably connected to two sides of the pole holding mast (2), and is characterized by comprising an anti-folding pole holding head (1) and a heave system (4), wherein the anti-folding pole holding head (1) is connected to the top of the pole holding mast (2) and extends out relative to the height direction and the two side directions of the pole holding mast (2);
the fluctuation system (4) comprises a fixed pulley block (41), fluctuation steel wire ropes (42) and movable pulley blocks (43), wherein the fixed pulley blocks (41) are arranged at two side end parts of the folding-prevention holding rod head (1), the movable pulley blocks (43) are arranged at the tops of holding rod rocker arms (3) at two sides of a holding rod mast (2), and the fluctuation steel wire ropes (42) are upwards led into the fixed pulley blocks (41) at two sides of the folding-prevention holding rod head (1) from the bottoms of the holding rod masts (2) and respectively penetrate through the movable pulley blocks (43) of the holding rod rocker arms (3) at two sides of the holding rod mast (2);
the anti-folding locking rod head (1) comprises a mast heightening part (13) and a plug widening part (12), wherein the mast heightening part (13) is connected to the top of the holding rod mast (2) and extends out relative to the height direction of the holding rod mast (2); the top widening part (12) is connected to the outer walls of the two sides of the top end of the mast heightening part (13) and extends out relative to the two sides of the mast heightening part (13); the fixed pulley block (41) is arranged at the end parts of the two sides of the plug widening part (12) in the extending direction;
the plug widening part (12) extends towards two sides of the mast heightening part (13) in a direction perpendicular to the central axis of the mast heightening part (13);
the parts of the plug widening part (12) extending out relative to the two sides of the mast heightening part (13) are positioned on the same straight line.
2. The rocker arm pole folding prevention device according to claim 1, wherein the folding prevention pole head (1) is of a T-shaped structure.
3. The rocker arm pole folding prevention device according to claim 1, wherein the folding prevention pole head (1) is of an integrally formed structure.
4. The rocker arm pole folding prevention device according to claim 1, characterized in that the bottom of the folding prevention pole head (1) is fixedly connected with the top of the pole holding mast (2).
5. The rocker arm pole folding prevention device according to claim 1, characterized in that the bottom end of the pole rocker arm (3) is connected with the pole mast (2) through a hinge.
6. A rocker arm pole fold prevention device according to claim 1, characterized in that the undulating wire rope (42) amplifies the tension on the pole rocker arm (3) by means of the fixed pulley block (41) and the movable pulley block (43).
7. The rocker arm pole folding prevention device according to claim 1, wherein the rocker arm (3) is driven by a heave wire rope (42) to rotate towards or away from the pole mast (2) with a rotation point at the bottom of the pole mast (2) being circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311117976.2A CN117023429B (en) | 2023-08-31 | 2023-08-31 | Folding-preventing device for rocker arm holding pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311117976.2A CN117023429B (en) | 2023-08-31 | 2023-08-31 | Folding-preventing device for rocker arm holding pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117023429A CN117023429A (en) | 2023-11-10 |
| CN117023429B true CN117023429B (en) | 2024-03-26 |
Family
ID=88622784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311117976.2A Active CN117023429B (en) | 2023-08-31 | 2023-08-31 | Folding-preventing device for rocker arm holding pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117023429B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB814504A (en) * | 1956-04-06 | 1959-06-03 | Liebherr Hans | A slewing and luffing jib crane |
| JP2010235265A (en) * | 2009-03-31 | 2010-10-21 | Tlc:Kk | Derrick for assembling/disassembling iron tower |
| CN203514920U (en) * | 2013-08-16 | 2014-04-02 | 河南世纪通讯设备有限公司 | Communication stay wire tower with movable platforms |
| CN204057766U (en) * | 2014-07-23 | 2014-12-31 | 辽宁省送变电工程公司 | Mast hanging device |
| CN109610922A (en) * | 2018-12-17 | 2019-04-12 | 国网西藏电力有限公司 | A kind of typical case's landform tower erection construction equipment |
| CN214780376U (en) * | 2021-01-07 | 2021-11-19 | 华东送变电工程有限公司 | Novel full-hydraulic jacking ground double-rocker arm holding rod |
| CN217025124U (en) * | 2022-04-02 | 2022-07-22 | 天津市中能电力科技有限公司 | Two rocking arms are embraced pole power integrated system |
| CN115977456A (en) * | 2023-03-20 | 2023-04-18 | 辽宁省送变电工程有限公司 | Pole is embraced to two rocking arms of console mode |
-
2023
- 2023-08-31 CN CN202311117976.2A patent/CN117023429B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB814504A (en) * | 1956-04-06 | 1959-06-03 | Liebherr Hans | A slewing and luffing jib crane |
| JP2010235265A (en) * | 2009-03-31 | 2010-10-21 | Tlc:Kk | Derrick for assembling/disassembling iron tower |
| CN203514920U (en) * | 2013-08-16 | 2014-04-02 | 河南世纪通讯设备有限公司 | Communication stay wire tower with movable platforms |
| CN204057766U (en) * | 2014-07-23 | 2014-12-31 | 辽宁省送变电工程公司 | Mast hanging device |
| CN109610922A (en) * | 2018-12-17 | 2019-04-12 | 国网西藏电力有限公司 | A kind of typical case's landform tower erection construction equipment |
| CN214780376U (en) * | 2021-01-07 | 2021-11-19 | 华东送变电工程有限公司 | Novel full-hydraulic jacking ground double-rocker arm holding rod |
| CN217025124U (en) * | 2022-04-02 | 2022-07-22 | 天津市中能电力科技有限公司 | Two rocking arms are embraced pole power integrated system |
| CN115977456A (en) * | 2023-03-20 | 2023-04-18 | 辽宁省送变电工程有限公司 | Pole is embraced to two rocking arms of console mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117023429A (en) | 2023-11-10 |
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