CN110697592A - Tower crane with anti-seismic function and operation mode thereof - Google Patents
Tower crane with anti-seismic function and operation mode thereof Download PDFInfo
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- CN110697592A CN110697592A CN201910900653.8A CN201910900653A CN110697592A CN 110697592 A CN110697592 A CN 110697592A CN 201910900653 A CN201910900653 A CN 201910900653A CN 110697592 A CN110697592 A CN 110697592A
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- tower crane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—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
- B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a tower crane with an anti-seismic function, which comprises a tower crane body, wherein the tower crane body comprises a tower body, a tower top, a base, a suspension arm and a balance arm, the tower body, the tower top and the base are arranged in the same horizontal direction, the side surface of the tower body is provided with at least three sliding devices, and are arranged around the tower body in the same level, the surface of the base is provided with a sliding platform, the sliding device and the sliding platform are mutually matched for use, and are movably connected through a steel cable, the tower body is composed of a plurality of standard sections, damping devices are uniformly arranged inside the tower body, the damping device is not less than two, solves the problem that the traditional tower crane lacks necessary anti-seismic function, when a relatively strong earthquake is encountered, the tower crane is easily damaged seriously and even collapses unexpectedly.
Description
Technical Field
The invention relates to the field of building processing, in particular to a tower crane with an anti-seismic function and an operation mode thereof.
Background
The tower crane is the most common hoisting equipment in construction sites, also known as tower crane, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction by virtue of section-by-section extension (height) (referred to as standard section for short). The tower crane is an indispensable device on a construction site, along with the rapid development of building technology, a plurality of tower cranes are often installed on one construction site, and a plurality of devices have certain potential safety hazards.
Earthquakes are one of the most destructive disasters in the world, and under the action of the earthquakes, a plurality of buildings and large-scale machines are damaged, so that the property is seriously lost. Due to the structural and appearance particularity of the tower crane, when a strong earthquake occurs, the tower crane is easily damaged seriously and even collapses unexpectedly, some towers have overlarge deformation such as upwarp and bending of the crane arm to cause equipment scrap, and some tower body structures collapse to bring secondary damage to construction sites and constructors, so that the tower crane is very dangerous. When an earthquake occurs, due to the characteristic of earthquake waves, the propagation speed of longitudinal waves is higher than that of transverse waves, the amplitude of the transverse waves is larger than that of the longitudinal waves, and the transverse waves have a shearing force effect parallel to the ground.
Disclosure of Invention
Technical problem to be solved
The invention provides a tower crane with an anti-seismic function and an operation mode thereof, and solves the problems that the traditional tower crane lacks a necessary anti-seismic function, and the tower crane is easily damaged seriously or even collapses to cause accidents when a stronger earthquake occurs.
(II) technical scheme
In order to solve the technical problem, the invention provides a tower crane with an anti-seismic function, which comprises a tower crane body, wherein the tower crane body comprises a tower body, a tower top, a base, a suspension arm and a balance arm, the tower body, the tower top and the base are arranged in the same horizontal direction, the side surface of the tower body is provided with a sliding device, the sliding devices are arranged at least in three positions and are arranged around the tower body in the same horizontal direction, the surface of the base is provided with a sliding platform, the sliding devices and the sliding platform are mutually matched for use and are movably connected through a steel cable, the tower body is composed of a plurality of standard sections, the interior of the tower body is uniformly provided with damping devices, and the damping devices are at least in two positions.
Further preferably, the sliding device comprises a transmission sliding chute, a transmission sliding block and a transmission connecting frame, the transmission connecting frame is installed at one third part of the top of the tower body, the transmission sliding chute is arranged on the surface of the transmission connecting frame, and the transmission sliding chute is used for providing a track for the movement of the transmission sliding chute.
Further preferably, a hanging ring is arranged on the side edge of the transmission sliding block and fixedly connected with the steel cable.
Further preferably, the transmission sliding block is connected with a transmission motor, and the transmission motor controls the transmission sliding block to move in the transmission sliding groove.
Preferably, the sliding platform is provided with a plurality of spring groups and spring bases on the surface, the spring bases are fixed on the sliding platform, the number of the spring bases is the same as that of the steel cables, one ends of the spring groups are connected with the spring bases, and the spring bases face the tower body in the horizontal direction.
Preferably, the other end of the spring group is connected with a pulley block, the tail end of the pulley block is connected with a steel cable, and the spring group can be replaced by a hydraulic device.
Further preferably, the damping devices are transversely arranged at diagonal positions of the standard knots along the horizontal direction, the adjacent damping devices are vertically distributed, and the distance between the adjacent damping devices is 4-6 standard knots.
Further preferably, damping device includes connecting rod, fly leaf, damping box, and for converting into the design, the both ends of damping box are connected the connecting rod, the connecting rod is used for fixing damping device is in the diagonal department of standard festival, the directional damping box inside position of connecting rod all is equipped with a plurality of fly leaves, fly leaf parallel arrangement evenly distributed is in inside the damping box, the damping box is filled with the viscous material layer, the fly leaf is vertical to be run through the viscous material layer, the vertical direction on viscous material layer sets up the lead sandwich layer.
Further preferably, the adhesive material layer is made of rubber.
The invention also comprises an operation mode of the tower crane with the earthquake-proof function, which comprises
A. When earthquake early warning is carried out, the motor is operated to move the transmission slide block downwards until the tail end of the transmission chute is pushed, and at the moment, the steel cable is kept in an inclined state to surround the tower body;
B. adjusting the sliding platform and tightening the spring group to enable all the steel cables to be in a tightened state so as to prevent the tower body from toppling;
after the earthquake is finished, the spring group is loosened, the position of the transmission slide block is recovered, and the steel cable is kept in a vertical state.
(III) advantageous effects
1. The invention adopts the tower crane with the anti-seismic function and the operation mode thereof, the sliding device arranged on the tower body can adjust the sliding position of the transmission rod according to the earthquake condition, the motor is operated to move the transmission slide block downwards until the tail end of the transmission chute is pushed, and the stability of the tower body is ensured by utilizing the steel cable.
2. The sliding platform matched with the sliding device is arranged below the base, the steel cable is buffered by using the pulling force of the spring groups, and meanwhile, the pulley block is arranged to match the length of the steel cable and reduce the load of the steel cable, so that the steel cable is prevented from being broken.
3. Set up damping device in the fixed spacing of body of the tower, slow down the deformation of standard festival girder steel, prevent to produce resonance phenomenon, also provide the reference for the rest work after the calamity.
Drawings
FIG. 1 is a schematic structural view of a tower crane body;
FIG. 2 is a schematic structural view of the sliding device;
FIG. 3 is a schematic structural view of the sliding platform;
FIG. 4 is a schematic view of a pulley block structure;
FIG. 5 is a schematic structural diagram of a standard knot;
FIG. 6 is a schematic view of the damper device;
wherein: 1. a tower crane body; 10. a tower body; 20. a base; 30. a suspension arm; 40. a balance arm; 50. the tower top; 100. a sliding device; 110. a transmission chute; 120. a transmission slide block; 130. a transmission connecting frame; 140. a standard section; 150. a hoisting ring; 160. a drive motor; 200. a sliding platform; 210. a spring set; 220. a spring base; 230. a pulley block; 240. A console; 300. a damping device; 310. a connecting rod; 320. a movable plate; 330. a damping box; 340. a layer of adhesive material; 350. a lead core layer; 400. a steel cord.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to examples and figures 1-6. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, the present invention provides a tower crane with an anti-seismic function, which includes a tower crane body 1, where the tower crane body 1 includes a tower body 10, a tower top 50, a base 20, a boom 30 and a balance arm 40, the tower body 10, the tower top 50 and the base 20 are arranged in a same horizontal direction, a sliding device 100 is arranged on a side surface of the tower body 10, the sliding device 100 is arranged at least at three positions and at the same horizontal direction, and is arranged around the tower body 10, a sliding platform 200 is arranged on a surface of the base 20, the sliding device 100 and the sliding platform 200 are correspondingly matched with each other and are movably connected through a steel cable 400, the tower body 10 is composed of a plurality of standard sections 140, a damping device 300 is uniformly arranged inside the tower body 10, and the damping device 300 is at least at two positions.
Specifically, as shown in fig. 2, the sliding device 100 includes a transmission sliding chute 110, a transmission sliding block 120, and a transmission connecting frame 130, the transmission connecting frame 130 is installed at a third portion of the top of the tower 10, the transmission sliding chute 110 is disposed on the surface of the transmission connecting frame 130, the transmission sliding chute 110 is used for providing a track for the movement of the transmission sliding chute 110, the third portion can ensure that the steel cable 400 is consistent as far as possible under the stable gravity center of the tower 10, when the sliding device 100 is set too high, the steel cable 400 is strong and easy to break, more sliding devices 100 need to be added to match the steel cable 400, the weight and the material cost of the tower crane body 1 are increased, and if the sliding device 100 is set too low, the effect of reducing the swing of the tower 10 cannot be satisfied, and the anti-seismic function is lost.
Specifically, a hanging ring 150 is welded to a side edge of the transmission sliding block 120, and the hanging ring 150 is mainly used for binding and connecting the steel cable 400. 400
Specifically, the transmission slider 120 is connected with a transmission motor 160, the transmission motor 160 is used for controlling the transmission slider 120 to move in the transmission chute 110, an operation chamber above the tower body 10 and a control console 240 are arranged on the base, and the control console 240 is used for remotely operating the start and stop of the transmission motor 160, so that whether a worker on the tower top or a worker on the ground can operate the control console 240 in time when an earthquake comes, and the emergency opening is facilitated.
Specifically, as shown in fig. 3, the sliding platform 200 is provided with spring groups 210 and spring bases 220 on the surface thereof, each spring base 220 is connected to three spring groups 210 in a matching manner, the spring bases 220 are welded and fixed to the sliding platform 200, the number of the spring bases 220 is the same as that of the steel cables 400, one end of each spring group 210 is connected to the spring base 220 and faces the tower body 10 in the horizontal direction, and the design of the spring groups 210 can ensure the buffering effect of the sliding platform 200 and prevent severe shaking from affecting the stability of the tower body 10.
Specifically, as shown in fig. 4, the pulley block 230 is connected to the other end of the spring assembly 210, the sliding assembly is a labor-saving pulley block 230, on one hand, the load of the steel cable 400 can be effectively reduced, and the steel cable 400 is prevented from being broken, on the other hand, the sliding assembly is also used for the transmission sliding movement, and the length of the steel cable 400 is controlled by matching with the extension and contraction of the transmission sliding movement, the tail end of the pulley block 230 is connected with the steel cable 400, and the spring assembly 210 can be replaced by a hydraulic device and is used for the.
Wherein, still be equipped with control cabinet 240 on sliding platform 200, drive motor 160's start-up can be controlled to control cabinet 240, and when making things convenient for the tower crane studio unmanned, subaerial other staff also can operate the motion of transmission slider 120, avoid dangerous the emergence.
Specifically, as shown in fig. 5, damping device 300 transversely sets up along the horizontal direction the diagonal position department of standard festival 140, and is adjacent damping device 300 keeps vertical distribution, and the interval is 4-6 standard festival 140, standard festival 140 designs the specification of general tower crane, and the single section is 2.4 meters. As shown in fig. 4, the cross staggered distribution of the damping device 300 can ensure that all the stress of the standard knot 140 is uniform all around, so that the deformation of the steel beam on the calibration knot is slowed down to the maximum extent, and the marking scales are arranged on the damping device 300, so that a worker can conveniently judge the deformation condition of the standard knot 140 according to the scale deviation of the damping device 300 after a disaster, and the efficiency of subsequent repair work is improved.
Specifically, as shown in fig. 6, damping device 300 includes connecting rod 310, movable plate 320, damping box 330, and for the symmetrical design, damping box 330's both ends are connected connecting rod 310, connecting rod 310 is used for fixing damping device 300 is in the diagonal department of standard festival 140, the inside position of the directional damping box 330 of connecting rod 310 all is equipped with a plurality of movable plates 320, movable plate 320 parallel arrangement evenly distributed is in inside damping box 330, damping box 330 is filled with viscous material layer 340, movable plate 320 vertically runs through viscous material layer 340, viscous material layer 340's vertical direction sets up lead core layer 350, and the cushioning effect of device has been guaranteed to flexible viscous material layer 340 and the lead core layer 350 of rigidity, and effectively prevent that the natural vibration cycle of body 10 structure is the same, takes place resonance phenomenon, causes the secondary injury.
The adhesive material layer 340 is made of rubber.
Specifically, during earthquake early warning, the motor of the operation console 240 or the sliding platform 200 moves the transmission slider 120 downward until pushing the end of the transmission chute 110, and at this time, the steel cable 400 keeps surrounding the tower body 10 and is converted from a vertical state to an inclined state from the vertical state of the steel cable 400;
specifically, by adjusting the sliding platform 200, the steel cables 400 in the spring assembly 210 are tightened, so that all the steel cables 400 are shortened to be in a tightened state, and the periphery of the tower body 100 uniformly bears the tension of multiple sections of steel cables, thereby preventing the tower body 10 from toppling;
specifically, after the earthquake is finished, the spring assembly 210 is released, the position of the transmission slide block 120 is restored, and the steel cable 400 is kept in a vertical state.
The method carries out the finite element model analysis on the common tower crane and the improved tower crane through the spectrum analysis method to carry out the earthquake response analysis. The method is an extension of modal analysis and is used for calculating the response condition of a certain building structure to other motions such as earthquakes. Spectral analysis is used in the design of structures or components that are subjected to seismic or other unsteady loads.
The finite element software used in the method is SAP2000, is used for analysis under the action of earthquake, is used for analyzing and contrasting data of a tower crane with the model number of QTZ63 adopted by a common tower crane model of an experiment, and is provided with a node every ten meters for respectively carrying out model analysis of a single node.
From the analysis of the above content herein, the conclusion is as follows:
(1) under the action of earthquake, the vibration mode decomposition reaction spectroscopy theoretically simulates more accurate earthquake effect.
(2) Through the analysis of the frame structure and the frame-core tube structure, the vibration mode decomposition reaction spectrum method is used to obtain that under the action of earthquake, the bottom shaft of the common tower crane is 30% -40% larger than that of the improved tower crane, which is unsafe.
(3) Under the action of a vertical earthquake, the common tower crane has larger shearing force and bending moment which cannot be ignored due to the dislocation in the vertical direction.
(4) For the steel beam structure, when the natural vibration period of the beam is close to that of the column, the steel beam can generate resonance phenomenon, and huge displacement and bending moment are generated. Therefore, in the structural design of the tower crane, the resonance phenomenon is avoided.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a take tower crane of antidetonation function, includes the tower crane body, the tower crane body includes body of the tower, the top of the tower, base, davit and balance arm, body of the tower, top of the tower, base keep same level setting, a serial communication port, the side of body of the tower is equipped with slider, slider is no less than three, and keeps same level all to encircle the body of the tower sets up, the base surface is equipped with slide bracket, slider with slide bracket corresponds the cooperation each other and uses, and all passes through cable wire swing joint, the body of the tower comprises a plurality of standard festivals, the inside of body of the tower evenly is equipped with damping device, damping device is no less than two departments.
2. A tower crane with an earthquake-proof function as claimed in claim 1, wherein the sliding device comprises a transmission chute, a transmission slide block and a transmission connecting frame, the transmission connecting frame is arranged at the top third part of the tower body, the transmission chute is arranged on the surface of the transmission connecting frame, and the transmission chute is used for providing a track for the movement of the transmission chute.
3. The tower crane with the earthquake-proof function as claimed in claim 2, wherein a hanging ring is arranged on the side edge of the transmission sliding block, and the hanging ring is fixedly connected with the steel cable.
4. A tower crane with an anti-seismic function according to claim 3, wherein the transmission slide block is connected with a transmission motor, and the transmission motor controls the transmission slide block to move in the transmission chute.
5. A tower crane with an anti-seismic function according to claim 1, wherein a plurality of spring groups and spring bases are arranged on the surface of the sliding platform, the spring bases are fixed on the sliding platform, the number of the spring bases is the same as that of the steel cables, one ends of the spring groups are connected with the spring bases, and the spring groups face the tower body in the horizontal direction.
6. An earthquake-resistant tower crane according to claim 5, wherein a pulley block is connected to the other end of the spring set, a steel cable is connected to the tail end of the pulley block, and the spring set can be replaced by a hydraulic device.
7. A tower crane with an earthquake-proof function as claimed in claim 1, wherein the damping devices are transversely arranged at diagonal positions of the standard knots along the horizontal direction, the adjacent damping devices are vertically distributed, and the distance between the adjacent damping devices is 4-6 standard knots.
8. The tower crane with the earthquake-proof function according to claim 7, wherein the damping device comprises a connecting rod, movable plates and a damping box, and is designed to be converted, two ends of the damping box are connected with the connecting rod, the connecting rod is used for fixing the damping device at a diagonal of the standard knot, the positions of the connecting rod pointing to the inside of the damping box are all provided with the movable plates, the movable plates are arranged in parallel and are uniformly distributed in the damping box, the damping box is filled with a viscous material layer, the movable plates vertically penetrate through the viscous material layer, and a lead core layer is arranged in the vertical direction of the viscous material layer.
9. A tower crane with an earthquake-proof function according to claim 8, wherein the adhesive material layer is made of rubber.
10. An operating mode of the tower crane with the earthquake-proof function according to claim 1, which comprises the following steps of; when earthquake early warning is carried out, the motor is operated to move the transmission slide block downwards until the tail end of the transmission chute is pushed, and at the moment, the steel cable is kept in an inclined state to surround the tower body; adjusting the sliding platform and tightening the spring group to enable all the steel cables to be in a tightened state so as to prevent the tower body from toppling; after the earthquake is finished, the spring group is loosened, the position of the transmission slide block is recovered, and the steel cable is kept in a vertical state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910900653.8A CN110697592B (en) | 2019-09-23 | 2019-09-23 | Tower crane with anti-seismic function and operation mode thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910900653.8A CN110697592B (en) | 2019-09-23 | 2019-09-23 | Tower crane with anti-seismic function and operation mode thereof |
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| CN110697592A true CN110697592A (en) | 2020-01-17 |
| CN110697592B CN110697592B (en) | 2023-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408212A (en) * | 2020-12-02 | 2021-02-26 | 湖南煤矿机械有限公司 | Outer climbing protection device of tower crane |
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| FR2803865A1 (en) * | 2000-01-18 | 2001-07-20 | Bouygues Batiment | Anchoring, for tower or pylon crane, comprises frame which slides on mast guyed to fixed ground anchoring points by cables |
| JP2002188321A (en) * | 2000-12-22 | 2002-07-05 | Takenaka Komuten Co Ltd | Vibration control structure for tower body |
| CN201730373U (en) * | 2010-05-14 | 2011-02-02 | 北京工业大学 | Damping system for pull ropes at top part of building structure |
| CN205592072U (en) * | 2016-04-28 | 2016-09-21 | 三一重型能源装备有限公司 | Take a fan tower section of thick bamboo and fan of damping function |
| CN207700423U (en) * | 2017-10-17 | 2018-08-07 | 新昌县镜岭镇康柳电子元件厂 | A kind of anti-inclination damping unit of steel tower typhoon protection |
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2019
- 2019-09-23 CN CN201910900653.8A patent/CN110697592B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2803865A1 (en) * | 2000-01-18 | 2001-07-20 | Bouygues Batiment | Anchoring, for tower or pylon crane, comprises frame which slides on mast guyed to fixed ground anchoring points by cables |
| JP2002188321A (en) * | 2000-12-22 | 2002-07-05 | Takenaka Komuten Co Ltd | Vibration control structure for tower body |
| CN201730373U (en) * | 2010-05-14 | 2011-02-02 | 北京工业大学 | Damping system for pull ropes at top part of building structure |
| CN205592072U (en) * | 2016-04-28 | 2016-09-21 | 三一重型能源装备有限公司 | Take a fan tower section of thick bamboo and fan of damping function |
| CN207700423U (en) * | 2017-10-17 | 2018-08-07 | 新昌县镜岭镇康柳电子元件厂 | A kind of anti-inclination damping unit of steel tower typhoon protection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112408212A (en) * | 2020-12-02 | 2021-02-26 | 湖南煤矿机械有限公司 | Outer climbing protection device of tower crane |
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