CN107119966B - Holding pole flip-chip assemblage hoisting device - Google Patents
Holding pole flip-chip assemblage hoisting device Download PDFInfo
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- CN107119966B CN107119966B CN201710414913.1A CN201710414913A CN107119966B CN 107119966 B CN107119966 B CN 107119966B CN 201710414913 A CN201710414913 A CN 201710414913A CN 107119966 B CN107119966 B CN 107119966B
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- derrick
- pole
- lifting
- holding pole
- flip
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/344—Arrangements for lifting tower sections for placing additional sections under them
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- Load-Engaging Elements For Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a holding pole inverted assembly lifting device, relates to the technical field of power transmission line construction, and solves the technical problem that the existing holding pole inverted assembly lifting device is only suitable for an inverted assembly lifting process of a holding pole with small specification. This armful pole flip-chip assemblage hoisting device includes: the device comprises an assembled base, a derrick arranged on the assembled base, a lifting mechanism arranged on the inner side of the derrick, an operating platform arranged on the outer side of the derrick, a plurality of automatic locking limit control structures arranged on different heights of the derrick and a hydraulic system for driving the lifting mechanism. The invention is applied to flip assembly lifting of the holding pole.
Description
Technical Field
The invention relates to the technical field of power transmission line construction, in particular to a holding pole flip-chip assembly lifting device.
Background
At present, along with the continuous development of extra-high voltage technology, in the power grid construction process, the voltage level of transmission line is higher and higher, and the required tower height of group in the transmission line work progress is also higher and higher, and the required pole-holding specification that uses is also bigger and bigger, and the length, weight, the scope of acting as go-between of holding the pole increase by a wide margin, wherein, the link is more, the risk is great in the lift process of holding the pole flip-chip assemblage, and the security is relatively poor, and consequently, the requirement of holding the pole flip-chip assemblage lift process to construction technology and safety control measure is also higher.
However, the existing lifting device for the inverted assembly of the holding pole is only suitable for the inverted assembly lifting of the holding pole with small specification, and the existing lifting device for the inverted assembly of the holding pole is not provided with a safety protection mechanism, and cannot meet the safety requirement in the inverted assembly lifting process of the holding pole with large specification, and cannot be applied to the inverted assembly lifting of the holding pole with large specification.
Disclosure of Invention
The invention aims to provide a holding pole flip-assembly lifting device which is used for meeting the safety requirement in the process of lifting the large-size holding pole in a flip-assembly manner.
In order to achieve the above purpose, the invention provides a holding pole flip-chip assembly lifting device, which adopts the following technical scheme:
this armful pole flip-chip assemblage hoisting device includes: the device comprises an assembled base, a derrick arranged on the assembled base, a lifting mechanism arranged on the inner side of the derrick, an operating platform arranged on the outer side of the derrick, a plurality of automatic locking limit control structures arranged on different heights of the derrick and a hydraulic system for driving the lifting mechanism.
Compared with the prior art, the holding pole flip-chip assembly lifting device provided by the invention has the following beneficial effects:
in the holding pole inverted assembly lifting device provided by the invention, the derrick is arranged on the assembled base, the lifting mechanism is arranged on the inner side of the derrick, the lifting operation platform is arranged on the outer side of the derrick, the plurality of automatic locking limit control structures are arranged on different heights of the derrick, and the hydraulic system for driving the lifting mechanism is further included in the holding pole inverted assembly lifting device, so that when the holding pole inverted assembly lifting device is used for carrying out large-specification holding pole inverted assembly lifting, the derrick is used as inverted support, the hydraulic system drives the lifting mechanism to reversely lift holding pole segments required by large-specification holding pole inverted assembly section by section in a 'first-up-then-down' sequence, after the holding pole segments are lifted to a certain height, the automatic locking limit control structures arranged at the height are jacked by holding pole main auxiliary materials, and after the holding pole cross bracing main materials pass, the automatic locking limit control structures can be automatically closed and limited, thereby the safety requirement of the falling of the holding pole segments lifted by inverted assembly lifting is effectively prevented, and the large-specification holding pole inverted assembly lifting process is ensured, and the inverted assembly lifting process is smoothly carried out.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lifting device for assembling a holding pole in a flip-chip manner according to an embodiment of the present invention;
FIG. 2 is a schematic view of an assembled base structure according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a derrick structure according to an embodiment of the present invention;
FIG. 4 is a front view of a lifting mechanism according to an embodiment of the present invention;
FIG. 5 is a side view of a lifting mechanism provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an automatic locking limit control structure according to an embodiment of the present invention.
Reference numerals illustrate:
1-an assembled base, 2-a derrick and 3-a lifting mechanism,
4, an operation platform, 5, an automatic locking limit control structure, 6, a hydraulic system,
7-a trolley conveying mechanism, 11-a basic frame, 12-a fixing frame,
13-fixing bolts, 14-stay wire ground anchors, 21-upper section frame body,
22-lower section frame body, 23-right angle locating plate, 24-roller,
25-wire-pulling device, 31-door-shaped frame, 32-lifting cylinder,
33-clamping and supporting mechanism, 34-guide roller, 35-supporting and hooking mechanism,
51-rotating arm, 52-tension spring, 53-limit clamping block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a holding pole flip-assembly lifting device, in particular to a holding pole flip-assembly lifting device as shown in fig. 1, which comprises: the device comprises a fabricated base 1, a derrick 2 mounted on the fabricated base 1, a lifting mechanism 3 arranged on the inner side of the derrick 2, an operating platform 4 mounted on the outer side of the derrick 2, a plurality of automatic locking limit control structures 5 arranged on different heights of the derrick 2 and a hydraulic system 6 for driving the lifting mechanism 3.
In the technical scheme of this embodiment, derrick 2 installs on assembled base 1, derrick 2 inboard is provided with hoist mechanism 3, derrick 2 outside is provided with liftable operation platform 4, be provided with a plurality of automatic locking limit control structure 5 on the derrick 2 different height, and still including the hydraulic system 6 that is arranged in driving hoist mechanism 3 in this derrick flip-chip assemblage hoisting device, then when using this derrick flip-chip assemblage hoisting device to carry out big specification derrick flip-chip assemblage and promote, use derrick 2 as the flip-chip support, hydraulic system 6 drive hoist mechanism 3 with big specification derrick flip-chip assemblage required derrick section according to "first upper and lower" order flip-chip hoist each other, after this derrick section is promoted to certain height, the automatic locking limit control structure 5 of setting up in this height department is jacked up by the derrick main material, after the cross bracing main material passes through, this automatic locking limit control structure 5 can automatic closure spacing, thereby effectively prevented that the upset derrick section of having accomplished the assemblage from falling off, and then the big specification of the safety in-chip assemblage of the realization of the big specification in the safety requirement of the high-level lift-up that has guaranteed the high-level in-up process of the flip-chip assemblage of derrick.
Illustratively, as shown in fig. 2, the fabricated base may include a plurality of foundation frames 11, where the bottom of the foundation frame 11 is in a cambered surface structure, so that the contact area between the foundation frame 11 and the ground can be increased, the bearing capacity of the entire fabricated base is improved, and the requirement on the endurance of the ground where the holding pole flip-assembly lifting device is disposed is reduced, so that the constructor can conveniently select sites.
Specifically, the plurality of foundation frames 11 may be fixed together by the plurality of fixing frames 12 and the fixing bolts 13, and as for the specific number of the foundation frames 11 and the fixing frames 12 in the assembled base, those skilled in the art may set and assemble according to the required specification of the lifting holding pole in the flip-chip assembly, and the embodiment of the invention is not limited.
Compared with the traditional pouring type foundation of the lifting device, the assembled base is flexible and convenient to assemble, can be recycled, and greatly shortens the time and cost of foundation construction, and as the bottom of the foundation frame 11 is an arc surface, the damage of the lifting device to the vegetation on the site can be reduced, and further the problems that the traditional lifting device is long in foundation construction period, high in cost, incapable of being reused and large in influence on the surrounding environment are solved.
Further, the fixing frame 12 may be provided with a plurality of stay wire ground anchors 14 for fixing the assembled base and the ground, so that the assembled base is more stable, and the holding pole flip-chip assembling lifting device is more stable.
Illustratively, as shown in fig. 3, the derrick 2 is a columnar derrick surrounded by four sheet frames, two adjacent sheet frames can be connected by a pin shaft positioning bolt, and a plurality of staggered horizontal cross beams and vertical support columns can be arranged in each sheet frame, so that the columnar derrick surrounded by the sheet frames is more stable.
Specifically, the frame body of the derrick 2 can be composed of an upper section frame body 21 and a lower section frame body 22, each section frame body is a columnar derrick formed by surrounding four sheet frames, and the upper section frame body 21 and the lower section frame body 22 can be positioned and installed through right angle positioning plates 23 arranged at two ends of the frame body, so that the upper section frame body 21 and the lower section frame body 22 are positioned accurately to form a stable derrick 2.
Further, each sheet-shaped frame is provided with a roller 24 for preventing collision between the holding pole and the sheet-shaped frame so as to reduce friction resistance of the holding pole during lifting, and the roller 23 can play a role in guiding and righting the lifting of the holding pole during lifting of the holding pole, so that smooth progress of the lifting process of inverted assembly of the holding pole is ensured.
In addition, as shown in fig. 3, the top end of the derrick 2 is further provided with a wire pulling device 25 through which a wire is passed, the derrick 2 is leveled and righted through the wire pulling device 25, and in the process of lifting the derrick in a flip-chip assembly manner, the bending moment generated by the derrick to the derrick 2 can be reduced by depending on the stress of the wire pulling. Further, a tension sensor and an alarm system can be connected in series in each stay wire, so that a constructor can conveniently detect and control the stress of the stay wire.
Illustratively, as shown in fig. 4 and 5, the lifting mechanism 3 includes a gate frame 31, a lifting cylinder 32, and a plurality of catch mechanisms 33 disposed in parallel in the height direction of the derrick within the gate frame 31 for catching a holding pole.
Because a plurality of clamping and supporting mechanisms 33 are arranged in the door-shaped frame 31, the lifting mechanism 3 can be suitable for pole-holding mark sections with different specifications, and the pole-holding mark section with each length specification can reach the lifting height through multiple jacking. When a certain catch mechanism 33 is used, the catch mechanism 33 can be quickly opened, while the other catch mechanisms 33 are in a retracted state.
It should be noted that, for the specific number of the clamping and supporting mechanisms 33 in the lifting mechanism 3, a person skilled in the art may set the specific specification of the holding pole that is reversely assembled and lifted according to actual needs, and the embodiment of the present invention is not limited.
One end of the lifting cylinder 32 is connected with an upper beam of the door-type frame 31, and the other end of the lifting cylinder 32 is fixed on the derrick and connected with a hydraulic system, so that the hydraulic system can drive the lifting cylinder 32, and further lifting of the pole-holding standard section is achieved.
The hydraulic system may be composed of a hydraulic pump station, a hydraulic cylinder, a hydraulic valve and the like. A hydraulic system with rated pressure of 10MPa can be selected, and a double-cylinder lifting mode is adopted, so that the maximum lifting weight of the hydraulic system can reach 60kN, and the lifting speed can reach 1.6m/min. When the lifting cylinder 32 is driven by the hydraulic system, the operation is safe, and the hydraulic system is lighter in weight, so that the integral quality of the holding pole inverted assembly lifting device is reduced.
In the above embodiment, the periphery of the gate frame 31 may be further provided with guide rollers 34, specifically, rolling guide mechanisms including the guide rollers 34 may be installed on four corners of the gate frame 31, a slideway matched with the guide rollers 34 is provided on the derrick, in the lifting process of the lifting mechanism 3, the guide rollers 34 may slide on the slideway matched with the lifting mechanism, so as to realize lifting of the lifting mechanism 3 in the derrick, and through cooperation of the guide rollers 34 and the slideway, rail groove clamping stagnation phenomenon of the lifting mechanism 3 in lifting in the derrick may be avoided.
It should be noted that the guide rollers 34 may be front-rear guide rollers or left-right guide rollers, which may be set by those skilled in the art according to actual needs, and the embodiment of the present invention is not limited thereto.
In addition, as shown in fig. 4 and 5, the lower end of the door-shaped frame 31 in the above embodiment may be further provided with a supporting hook mechanism 35 for supporting the holding pole by the auxiliary clamping and supporting mechanism 33, so as to further improve the above lifting mechanism 3.
Illustratively, as shown in fig. 6, the automatic locking limit control structure 5 includes a rotating arm 51, and a limit block 53 connected to one end of the rotating arm 51 by a tension spring 52, the other end of the rotating arm 51 is rotatably connected to a horizontal beam on the derrick, and the rotating arm 51 rotates around the horizontal beam.
After the pole-holding mark section is lifted to a certain height, the rotating arm 51 arranged in the automatic locking limit control structure 5 at the height is jacked by the pole-holding main auxiliary material, when the pole-holding cross arm main material passes through, under the action of the tension spring 52, the rotating arm 51 and the limit clamping block 53 fall back, the automatic closing limit of the automatic locking limit control structure 5 is realized, and thus the falling and falling of the pole-holding mark section which is lifted is effectively prevented, and the safety requirement in the large-specification pole-holding flip assembly lifting process is further met.
Illustratively, as shown in fig. 1, the above-mentioned derrick flip-assembly lifting device may further include a trolley conveying mechanism 7 mounted on the fabricated base 1, the trolley conveying mechanism 7 penetrating through the derrick 2.
Specifically, this track dolly conveying mechanism 7 can be used to hold the delivery and the direction of pole mark festival and carry, not only can effectively alleviate artifical intensity of labour, improves the pole installation effectiveness, can also guarantee to hold the accurate positioning that the pole mark festival was laid, ensures that the pole mark festival can both lay the dolly center in the middle each time to prevent that pole mark festival business turn over derrick 2 from being hindered.
It should be noted that, the specific structure of the operation platform in the holding pole flip-chip assembly lifting device is the same as the structure of the existing operation platform, and those skilled in the art can refer to the specific structure of the existing operation platform, so that the embodiments of the present invention will not be repeated.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a pole flip-chip assemblage hoisting device which characterized in that includes: the device comprises an assembled base, a derrick arranged on the assembled base, a lifting mechanism arranged on the inner side of the derrick, an operating platform arranged on the outer side of the derrick, a plurality of automatic locking limit control structures arranged on different heights of the derrick and a hydraulic system for driving the lifting mechanism;
the derrick is a columnar derrick surrounded by four sheet frames, two adjacent sheet frames are connected through pin shaft positioning bolts, and a plurality of staggered horizontal cross beams and vertical support columns are arranged in each sheet frame; the derrick comprises a derrick body and a derrick body, wherein the derrick body comprises an upper section of derrick body and a lower section of derrick body, each section of derrick body is a columnar derrick formed by surrounding four sheet frames, the upper section of derrick body and the lower section of derrick body are positioned and installed through right-angle positioning plates arranged at two ends of the derrick body, and each sheet frame is provided with a roller for preventing a holding pole from colliding with the sheet frame;
the lifting mechanism comprises a door-shaped frame, a lifting cylinder and a plurality of clamping and supporting mechanisms which are arranged in the door-shaped frame in parallel along the height direction of the derrick and used for supporting the holding pole;
one end of the lifting cylinder is connected with the upper beam of the door-shaped frame, and the other end of the lifting cylinder is connected with the hydraulic system; selecting a hydraulic system with rated pressure of 10MPa, and adopting a double-cylinder lifting mode;
guide rollers are arranged around the gate frame, and a slideway matched with the guide rollers is arranged on the derrick, and specifically comprises:
and rolling guide mechanisms comprising the guide rollers are arranged on four corners of the door-shaped frame, and slide ways matched with the guide rollers are arranged on the derrick.
2. The pole inversion assembly lifting device of claim 1, wherein the fabricated base comprises a plurality of foundation frames, wherein the bottom of the foundation frames is of an arc structure, and the foundation frames are fixed together through a plurality of fixing frames.
3. The pole inversion assembly lifting device according to claim 2, wherein a plurality of stay wire ground anchors for fixing the assembled base to the ground are arranged on each fixing frame.
4. The holding pole flip-chip assembly lifting device according to claim 1, wherein the top end of the derrick is further provided with a wire pulling device through which a wire pulling wire passes.
5. The holding pole flip-chip assembly lifting device according to claim 1, wherein an auxiliary clamping and supporting mechanism is arranged at the lower end of the door-shaped frame to support a supporting hook mechanism of the holding pole.
6. The derrick assembly lifting device of claim 1, wherein the automatic locking limit control structure comprises a rotating arm and a limit clamping block connected with one end of the rotating arm through a tension spring, the other end of the rotating arm is rotatably connected with a horizontal beam on the derrick, and the rotating arm rotates around the horizontal beam.
7. The pole flip-assembly lifting device of claim 1, further comprising a trolley conveyor mounted on the fabricated base, the trolley conveyor passing through the derrick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414913.1A CN107119966B (en) | 2017-06-05 | 2017-06-05 | Holding pole flip-chip assemblage hoisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414913.1A CN107119966B (en) | 2017-06-05 | 2017-06-05 | Holding pole flip-chip assemblage hoisting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107119966A CN107119966A (en) | 2017-09-01 |
| CN107119966B true CN107119966B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710414913.1A Active CN107119966B (en) | 2017-06-05 | 2017-06-05 | Holding pole flip-chip assemblage hoisting device |
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| CN (1) | CN107119966B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952589A (en) * | 2018-06-21 | 2018-12-07 | 中曼石油天然气集团股份有限公司 | A kind of tower-type headframe jack up unit and lifting method |
| CN111441643A (en) * | 2020-04-13 | 2020-07-24 | 合肥智瑞工程科技有限公司 | A supplementary bearing assembly for communication tower equipment fixing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535939A (en) * | 2012-01-19 | 2012-07-04 | 湖北省输变电工程公司 | Inversely assembling process for standing stay wire V-type tower |
| CN203924874U (en) * | 2014-06-26 | 2014-11-05 | 国家电网公司 | Attaching pole is from lifting appliance |
| CN104210990A (en) * | 2014-09-11 | 2014-12-17 | 宝鸡市银光电力机具有限责任公司 | Hydraulic jacking type inversed lifting frame |
| CN204040599U (en) * | 2014-08-27 | 2014-12-24 | 国家电网公司 | A kind of pole upside-down mounting lift hydraulic lifting apparatus |
| CN206815943U (en) * | 2017-06-05 | 2017-12-29 | 国家电网公司 | A kind of pole upside-down mounting group founds lifting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6843030B2 (en) * | 2003-05-13 | 2005-01-18 | David Zingerman | Self-lifting vertically rising mast |
-
2017
- 2017-06-05 CN CN201710414913.1A patent/CN107119966B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535939A (en) * | 2012-01-19 | 2012-07-04 | 湖北省输变电工程公司 | Inversely assembling process for standing stay wire V-type tower |
| CN203924874U (en) * | 2014-06-26 | 2014-11-05 | 国家电网公司 | Attaching pole is from lifting appliance |
| CN204040599U (en) * | 2014-08-27 | 2014-12-24 | 国家电网公司 | A kind of pole upside-down mounting lift hydraulic lifting apparatus |
| CN104210990A (en) * | 2014-09-11 | 2014-12-17 | 宝鸡市银光电力机具有限责任公司 | Hydraulic jacking type inversed lifting frame |
| CN206815943U (en) * | 2017-06-05 | 2017-12-29 | 国家电网公司 | A kind of pole upside-down mounting group founds lifting device |
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| CN107119966A (en) | 2017-09-01 |
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