CN108100894A - The short tower crane equipment of low speed and system - Google Patents
The short tower crane equipment of low speed and system Download PDFInfo
- Publication number
- CN108100894A CN108100894A CN201810074907.0A CN201810074907A CN108100894A CN 108100894 A CN108100894 A CN 108100894A CN 201810074907 A CN201810074907 A CN 201810074907A CN 108100894 A CN108100894 A CN 108100894A
- Authority
- CN
- China
- Prior art keywords
- low speed
- tower crane
- plate
- short tower
- crane equipment
- 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.)
- Pending
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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
-
- 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
- B66C23/84—Slewing gear
-
- 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
-
- 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
- B66C9/08—Runners; Runner bearings
Abstract
The present invention relates to a kind of short tower crane equipment of low speed and systems, including the first crane boom and second crane boom opposite with first crane boom, wherein described the first weight frame includes the lower plate being located on the pier cap beam and the upper plate above the lower plate, walking system is equipped between the lower plate and the upper plate, the top of the upper plate, which is equipped with, passively returns assembling device, the passive top for returning assembling device is equipped with upper turntable, the upper turntable is equipped with hoist engine and the traveling trolley being connected with the rope of the hoist engine, the traveling trolley is equipped with fixed pulley group, the fixed pulley group is connected by the rope with the running block below the fixed pulley group, and the running block is equipped with suspender.For sling height of the present invention from the influence of derrick tower, the scope of application is more extensive.
Description
Technical field
The present invention relates to the technical fields of bridge lifting equipment, refer in particular to a kind of short tower crane equipment of low speed and are
System.
Background technology
With the needs of economic construction of China, the rapid development of China Expressway, bridge construction is more and more, highway frame
Bridge machine has become key equipment indispensable in bridge on highway construction as the large special equipment in construction.
It is installed during bridge erection, it is necessary to which beam slab component is hung to designated position by crane, but existing crane is all
It is conjoined structure, is connected above crane using crossbeam, cause the width of crane cannot be changed according to site environment,
The serious lifting scope for limiting crane.
In order to overcome the above problem, Chinese invention patent（CN103708349A）Disclose a kind of split type shifting beam lifting
Machine including left crane frame and right crane frame, sets elevator at the top of the left crane frame and right crane frame
Machine sets fixed pulley group on the hoist engine, and the fixed pulley group is connected with running block, the running block and hanging beam shoulder pole
Connection；The left crane frame and from right to left heavy-duty machine bottom of frame set travelling mechanism；During work, bridge parts first pass through suspender
Be fixed on hanging beam shoulder pole, etc. bridge parts anchoring after, then simultaneously start on left crane frame and right crane frame
Hoist engine makes bridge parts rise to specified altitude assignment, then starts travelling mechanism, drives left crane frame and right crane locomotive
Frame is moved forward and backward along track, and split type shifting beam crane movements is made then to restart hoist engine, by bridge parts to designated position
Specific position is placed on to be installed.Although above-mentioned can install bridge, have the following disadvantages：By existing institute
, it is necessary to which first rail, such as gynophore could be spread to floor leveling to ground when stating travelling mechanism and be located at lifting motor spindle, therefore constructing
The section such as mountain area more special to condition still can seriously affect construction efficiency using above-mentioned technological means；In addition, existing hang
The height risen is influenced by derrick tower height, it is impossible to beyond the height of rack, limit the height of lifting, there is also applicable models
Enclose the problem of narrow.
The content of the invention
For this purpose, the technical problems to be solved by the invention are to overcome the crane that installation bridge uses in the prior art
The problem of narrow application range causes efficiency low, a kind of scope of application was big and to effectively improve the low speed of work efficiency short so as to provide
Tower crane equipment and system.
In order to solve the above technical problems, the present invention a kind of short tower crane equipment of low speed, including the first crane boom and with
The second opposite crane boom of first crane boom, wherein the first weight frame and second crane boom are respectively positioned on bridge pier lid
Liang Shang, and first crane boom is identical with the structure of second crane boom, first crane boom includes being located at the bridge
Lower plate on pier capping beam and the upper plate above the lower plate are equipped between the lower plate and the upper plate
Walking system, the top of the upper plate are equipped with and passively return assembling device, and the passive top for returning assembling device is equipped with upper turntable, institute
Turntable is stated equipped with hoist engine and the traveling trolley being connected with the rope of the hoist engine, the traveling trolley is equipped with fixed
Pulley blocks, the fixed pulley group are connected by the rope with the running block below the fixed pulley group, and described dynamic
Pulley blocks are equipped with suspender.
In one embodiment of the invention, the lower plate includes the first I-beam and opposite with first I-beam
The second I-beam, be connected between first I-beam and second I-beam by diagonal web member.
In one embodiment of the invention, along first I-beam and the second I-beam lower part along bridge to being welded with
Small outrigger is anchored, and the small outrigger both ends are equipped with extension.
In one embodiment of the invention, the upper plate is equipped with left-hand thread device, and the left-hand thread device includes setting
Left-hand thread frame on the upper plate and the inverse buckling wheel on the left-hand thread frame.
In one embodiment of the invention, the walking system is the wheel group for more covering identical drive, the vehicle
Wheel group includes two wheels, and loaded in balance frame.
In one embodiment of the invention, the passive assembling device that returns includes being located at the cylinder seat above the upper plate
And the locking device on the cylinder seat.
In one embodiment of the invention, the locking device include positioned at the cylinder seat top upper positioning seat with
And the lower support base positioned at the cylinder seat bottom, it is located on the lower support base at two positions in same horizontal line and distinguishes
It is welded with oval orifice plate.
In one embodiment of the invention, under the upper turntable is including upper cover plate and below the upper cover plate
Cover board is equipped with multiple crossbeams between the upper cover plate and the lower cover.
In one embodiment of the invention, the afterbody of the upper turntable is equipped with clump weight.
The present invention also provides a kind of short tower crane system of low speed, including above-mentioned any one of short tower crane of low speed
Device and electric control system.
The above technical solution of the present invention has the following advantages over the prior art：
The short tower crane equipment of low speed of the present invention and system, it is including the first crane boom and opposite with first crane boom
The second crane boom, first crane boom includes upper turntable and passive returning assembling device, the passive rotation for returning assembling device
The rotation of the upper turntable is driven, the traveling that the upper turntable is equipped with hoist engine and is connected with the rope of the hoist engine is small
Vehicle, the hoist engine drives the traveling trolley to be moved along the upper turntable, since the traveling trolley passes through the fixed pulley
Group is connected with the running block, therefore can effectively reduce the strength that frame precast beam is treated in the suspender lifting；Further, since institute
It states traveling trolley to be located on the upper turntable, not only avoid to floor leveling, and sling height is from the shadow of derrick tower
It rings, therefore the scope of application is more extensive.
Description of the drawings
In order to make the content of the present invention more clearly understood, below according to specific embodiments of the present invention and combine
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the front view of the short tower crane equipment of low speed of the present invention；
Fig. 2 is the schematic diagram in A-A directions in Fig. 1；
Fig. 3 is the schematic diagram of the upper plate；
Fig. 4 is the passive stereoscopic schematic diagram for returning assembling device；
Fig. 5 is the passive front view for returning assembling device.
Specific embodiment
Embodiment one：
As depicted in figs. 1 and 2, the present embodiment provides a kind of short tower crane equipment of low speed, including the first crane boom 10 and with institute
The second opposite crane boom 20 of the first crane boom 10 is stated, wherein the first weight frame 10 and second crane boom 20 are respectively positioned on
On pier cap beam 30, and first crane boom 10 is identical with the structure of second crane boom 20, first crane boom 10
Lower plate 11 including being located on the pier cap beam 30 and the upper plate 12 above the lower plate 11, the bottom
Walking system 13 is equipped between plate 11 and the upper plate 12, the top of the upper plate 12, which is equipped with, passively goes back to assembling device 14, institute
State the passive top for returning assembling device 14 and be equipped with upper turntable 15, the upper turntable 15 be equipped with hoist engine 16 and with the hoist engine
The traveling trolley 17 that 16 rope is connected, the traveling trolley 17 pass through equipped with fixed pulley group 18A, the fixed pulley group 18A
The rope is connected with the running block 18B below the fixed pulley group 18A, and the running block 18B is equipped with and hangs
Tool 19.
The short tower crane equipment of low speed described in the present embodiment, including the first crane boom 10 and with 10 phase of the first crane boom
To the second crane boom 20, wherein the first weight frame 10 and second crane boom 20 are respectively positioned on pier cap beam 30, and
First crane boom 10 is identical with the structure of second crane boom 20, and first crane boom 10 includes being located at the bridge pier
Lower plate 11 on bent cap 30 and the upper plate 12 above the lower plate 11, the lower plate 11 and the upper plate
Walking system 13 is equipped between 12, the walking system 13 can be moved along the lower plate 12, the top of the upper plate 12
Equipped with assembling device 14 is passively returned, it can be realized by the passively time assembling device 14 and be passively servo-actuated, it is described passively to return assembling device
Equipped with upper turntable 15, the passive rotation for returning assembling device 14 drives the rotation of the upper turntable 15, described above to turn for 14 top
Platform 15 is equipped with hoist engine 16 and the traveling trolley 17 being connected with the rope of the hoist engine 16, and the hoist engine 16 drives institute
It states traveling trolley 17 to move along the upper turntable 15, the traveling trolley 17 is equipped with fixed pulley group 18A, the fixed pulley group
18A is connected by the rope with the running block 18B below the fixed pulley group 18A, and on the running block 18B
Equipped with suspender 19, the suspender 19, which is fixed on, to be treated on frame precast beam 40, since the traveling trolley 17 passes through the fixed pulley group
18A is connected with the running block 18B, therefore can effectively be reduced the suspender 19 and be lifted by crane the strength for treating frame precast beam；
In addition, in the present invention, since the traveling trolley 17 is located on the upper turntable 15, not only avoid to floor leveling, and
Sling height is from the influence of derrick tower, therefore the scope of application is more extensive.
The lower plate 11 is anchored on the pier cap beam 30, the lower plate 11 include the first I-beam and with it is described
The second opposite I-beam of first I-beam, is connected between first I-beam and second I-beam by diagonal web member,
Advantageously ensure that whole rigidity, the pressure that first I-beam and second I-beam will not only bear wheel is also held
By the pulling force of anti-hook.Along the lower section of first I-beam and second I-beam along bridge to being welded with the small outrigger 11A of anchoring, by
In pier top bent cap width there are two types of different sizes, therefore the small outrigger both ends are equipped with extension.
As shown in figure 3, the upper plate 12 is rectangular frame a 12A, the rectangular frame 12A for being vertically connected with part
Left-hand thread device is equipped with, the anti-hook of left-hand thread device is in the outside top flange plate of I-beam on the lower plate 11, by described
Left-hand thread device can transfer pulling force caused by tilting moment.The left-hand thread device includes being arranged on anti-on the upper plate 12
Bearing is housed in buckle frame 12B and inverse buckling wheel 12C, the inverse buckling wheel 12C on the left-hand thread frame 12B.The upper plate
12 upper surface is welded with the passive cylinder seat 14A for returning assembling device 14 and its gusset in assembling, the upper plate 12
Lower surface and the wheel group of the walking system 13 are welded in assembling.The upper plate 12 makees fulcrum, lotus with four sets of wheel groups
It is downloaded from tilting moment and pressure that top is transferred.
The walking system 13 is the wheel group for more covering identical drive, in the present embodiment, using four sets of identical bands
The wheel group of power.The wheel group includes two wheels, and is loaded in balance frame, and in two wheels, one as master
Driving wheel, one is used as driven wheel, and the driving power of the driving wheel is variable-frequency motor.During actual traveling, a sidecar wheel is to rise
Empty, so two electrodes of the only one side worked, the idle running of another two electrode, therefore it is designed as rolling friction.
Described as shown in Figure 4 and Figure 5, the passive assembling device 14 that returns includes the cylinder seat for being located at 12 top of upper plate
14A and the locking device on the cylinder seat 14A wherein the cylinder seat 14A selects pivoting support, advantageously reduce
Steering resistance, with realize passively be servo-actuated, and turn 180 ° can employment push-and-pull；The locking device includes being located at the cylinder seat
On the upper positioning seat 14B on the 14A tops and lower support base 14C positioned at the cylinder seat 14A bottoms, the lower support base 14C
Oval orifice plate 14D is respectively welded at two positions in same horizontal line, is equipped in the oval orifice plate 14D long and narrow logical
Hole, on described at positioning seat 14B welding can bending resistance the stand with bolt, with facilitate the upper positioning seat 14B and it is described under
Support base 14C is locked after being connected by bolt, and the bolt can be moved along the long and narrow through hole, be realized in certain scope
Such as ± 10 ° servo-actuated.
The upper turntable 15 includes the upper cover plate 15A and lower cover 15B below the upper cover plate 15A, it is described on
The cover board 15A and lower cover 15B is fish belly I-beam, is equipped between the upper cover plate 15A and the lower cover 15B multiple
Crossbeam, so as to advantageously ensure that whole rigidity and intensity.Wherein, the lower part of the upper turntable 15 and the pivoting support spiral shell
It tethers and connects.The afterbody of the upper turntable 15 is equipped with clump weight 15C, ensures that entire crane boom lifted by crane by the clump weight 15C
Stability in journey, the arrangement principle of the clump weight 15C is, using the centre of gyration as boundary, lifts by crane maximum weight in maximum cantilever
When the torque that leans forward（Containing dead weight）For M1；Rear portion conduct oneself with dignity and the clump weight 15C caused by centrifugal castor be M2;It is and described
M1*40%=M2。
The hoist engine 16 is main lifting force source, and lifting velocity is 2m/min, and variable ratio frequency changer adjusts.The hoist engine 16
Reel for single drum double-rope formula, double-rope is to coordinate the rope feeding angle control between the reel and the fixed pulley group 18A
System.The hoist engine 16 component independent as one, directly positioning also serve as the lotus of stabilizing moment with upper 15 afterbody of turntable
It carries.
The traveling trolley 17 is connected with electric push rod 17A, simple and reliable.There are two work(for the tool of traveling trolley 17
Energy：Fixed pulley group 18A equipped with lifting mechanism；It can be in the traveling of amplitude direction so as to fulfill luffing equipped with trolley is rolled.This implementation
In example, the running block 18B has two groups, and each running block 18B includes two pulleys, and equipped with pulling plate and
Axis pin.
It is described to treat that frame precast beam 40 be T-shaped or U-shaped bridge, and the bridge has individual layer, bilayer, gate-type, curve
Etc. diversified forms.It is described to treat that frame precast beam 40 is seated in by bridge pad 41 at 30 bracket of pier cap beam.
The operation principle of the short tower crane equipment of low speed of the present invention is as follows：Transport vehicle treats frame precast beam 40 described in carrying on the back
To under bridge, then place it in side or be inclined under bridge or be placed in the pier cap beam 30 without to be lifted at bracket etc., institute
It states and treats frame precast beam 40 described in the first crane boom 10 and second crane boom 20 while lifting, then 13 edge of walking system
The lower plate 12 moves, and the traveling trolley 17 is moved along the upper turntable 15, is driven by the suspender 19 described
It treats the rising of frame precast beam 40, frame precast beam 40 is treated described in adjustment, slowly treat that frame precast beam 40 smoothly transports in place by described,
It completes beam, then starts next working cycles.
Embodiment two：
The present invention also provides a kind of short tower crane systems of low speed, not only include the short tower crane of low speed described in embodiment one
Device further includes electric control system, is provided electrically for the short tower crane equipment of the low speed by the electric control system
Control program.
The electric control system includes electrical equipment and safety monitoring system, wherein the electrical equipment is included wirelessly
Remote control, transmitter and receiver, the safety monitoring system are mounted on first crane boom 10 and second described
On weight frame 20, by monitor, control, manage etc. means realize safe operation control, dangerous criticality alarm, live real-time display and
The functions such as data record preservation.First crane boom 10 and second crane boom 20 can be controlled individually, and also linkage controls.
Obviously, the above embodiments are merely examples for clarifying the description, is not intended to limit the embodiments.For
For those of ordinary skill in the art, other various form variations can also be made on the basis of the above description or are become
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation or change thus extended out
Among moving still in the protection domain of the invention.
Claims (10)
1. a kind of short tower crane equipment of low speed, including the first crane boom and second lifting opposite with first crane boom
Frame, wherein the first weight frame and second crane boom are respectively positioned on pier cap beam, and first crane boom and described
The structure of second crane boom is identical, it is characterised in that：First crane boom includes the lower plate being located on the pier cap beam
And the upper plate above the lower plate, between the lower plate and the upper plate be equipped with walking system, it is described on
The top of bottom plate is equipped with and passively returns assembling device, and the passive top for returning assembling device is equipped with upper turntable, and the upper turntable is equipped with
Hoist engine and the traveling trolley being connected with the rope of the hoist engine, the traveling trolley is equipped with fixed pulley group, described fixed
Pulley blocks are connected by the rope with the running block below the fixed pulley group, and the running block is equipped with and hangs
Tool.
2. the short tower crane equipment of low speed according to claim 1, it is characterised in that：The lower plate includes the first I-beam
Second I-beam opposite with first I-beam passes through oblique abdomen between first I-beam and second I-beam
Bar is connected.
3. the short tower crane equipment of low speed according to claim 2, it is characterised in that：Along first I-beam and described
Two I-beam lower parts are along bridge to being welded with the small outrigger of anchoring, and the small outrigger both ends are equipped with extension.
4. the short tower crane equipment of low speed according to claim 1, it is characterised in that：The upper plate is filled equipped with left-hand thread
It puts, the left-hand thread device includes being arranged on the left-hand thread frame on the upper plate and the inverse buckling wheel on the left-hand thread frame.
5. the short tower crane equipment of low speed according to claim 1, it is characterised in that：The walking system be cover more it is identical
The wheel group of drive, the wheel group include two wheels, and loaded in balance frame.
6. the short tower crane equipment of low speed according to claim 1, it is characterised in that：The assembling device that passively returns includes being located at
Cylinder seat above the upper plate and the locking device on the cylinder seat.
7. the short tower crane equipment of low speed according to claim 6, it is characterised in that：The locking device includes being located at described
The upper positioning seat on cylinder seat top and the lower support base positioned at the cylinder seat bottom are located at same water on the lower support base
Oval orifice plate is respectively welded at two positions on horizontal line.
8. the short tower crane equipment of low speed according to claim 1, it is characterised in that：The afterbody of the upper turntable is equipped with counterweight
Block.
9. the short tower crane equipment of low speed according to claim 8, it is characterised in that：The upper turntable include upper cover plate with
And the lower cover below the upper cover plate, multiple crossbeams are equipped between the upper cover plate and the lower cover.
10. a kind of short tower crane system of low speed, it is characterised in that：It is short including any one of low speed in claim 1-9
Tower crane equipment and electric control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074907.0A CN108100894A (en) | 2018-01-25 | 2018-01-25 | The short tower crane equipment of low speed and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074907.0A CN108100894A (en) | 2018-01-25 | 2018-01-25 | The short tower crane equipment of low speed and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108100894A true CN108100894A (en) | 2018-06-01 |
Family
ID=62221125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810074907.0A Pending CN108100894A (en) | 2018-01-25 | 2018-01-25 | The short tower crane equipment of low speed and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108100894A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3302801A (en) * | 1964-03-03 | 1967-02-07 | Poroli Vincenzo | Gantry crane with extensible bridge girder carrying legs |
| EP1111135A2 (en) * | 1999-12-23 | 2001-06-27 | Pontello SpA | Method of building viaducts |
| CN101920913A (en) * | 2009-06-13 | 2010-12-22 | 徐州建机工程机械有限公司 | Self-propelled wide-span tower crane |
| CN103832932A (en) * | 2014-03-31 | 2014-06-04 | 葛洲坝集团第一工程有限公司 | Device for suspending and moving prestress tensioning hydraulic jack |
| CN203865857U (en) * | 2014-01-13 | 2014-10-08 | 浙江中建路桥设备有限公司 | Split type beam moving crane |
| CN205802808U (en) * | 2016-07-11 | 2016-12-14 | 廊坊德基机械科技有限公司 | The asphalt mixing building boom hoisting that may move and rotate |
| CN107298393A (en) * | 2017-08-25 | 2017-10-27 | 黄河科技学院 | Urban viaduct construction in later period movable type boom hoisting |
| CN207827719U (en) * | 2018-01-25 | 2018-09-07 | 中交第三航务工程局有限公司宁波分公司 | The short tower crane equipment of low speed and system |
-
2018
- 2018-01-25 CN CN201810074907.0A patent/CN108100894A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3302801A (en) * | 1964-03-03 | 1967-02-07 | Poroli Vincenzo | Gantry crane with extensible bridge girder carrying legs |
| EP1111135A2 (en) * | 1999-12-23 | 2001-06-27 | Pontello SpA | Method of building viaducts |
| CN101920913A (en) * | 2009-06-13 | 2010-12-22 | 徐州建机工程机械有限公司 | Self-propelled wide-span tower crane |
| CN203865857U (en) * | 2014-01-13 | 2014-10-08 | 浙江中建路桥设备有限公司 | Split type beam moving crane |
| CN103832932A (en) * | 2014-03-31 | 2014-06-04 | 葛洲坝集团第一工程有限公司 | Device for suspending and moving prestress tensioning hydraulic jack |
| CN205802808U (en) * | 2016-07-11 | 2016-12-14 | 廊坊德基机械科技有限公司 | The asphalt mixing building boom hoisting that may move and rotate |
| CN107298393A (en) * | 2017-08-25 | 2017-10-27 | 黄河科技学院 | Urban viaduct construction in later period movable type boom hoisting |
| CN207827719U (en) * | 2018-01-25 | 2018-09-07 | 中交第三航务工程局有限公司宁波分公司 | The short tower crane equipment of low speed and system |
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