CN115258969A - Tower crane and assembling and disassembling method thereof - Google Patents
Tower crane and assembling and disassembling method thereof Download PDFInfo
- Publication number
- CN115258969A CN115258969A CN202210242592.2A CN202210242592A CN115258969A CN 115258969 A CN115258969 A CN 115258969A CN 202210242592 A CN202210242592 A CN 202210242592A CN 115258969 A CN115258969 A CN 115258969A
- Authority
- CN
- China
- Prior art keywords
- tower
- arm
- movable counterweight
- ground
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- B66C23/005—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 balanced jib, e.g. pantograph arrangement, the jib being moved manually
-
- 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
- B66C23/06—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 mounted for jibbing or luffing 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
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
本发明公开了一种塔吊及其组装、拆卸方法，尤其是重型塔吊，包括基座、塔架、塔臂、上回转支座、上部竖向回转支承、阻尼装置、可移动配重和可移动配重控制单元，可移动配重控制单元控制可移动配重在塔臂的长度方向上移动，上部竖向回转支承包括具有第一轴心线的第一转轴和第一轴承，第一轴心线平行于地面且垂直于塔臂，第一转轴固定连接至塔臂和上回转支座中的其中一个，第一轴承固定连接两者之间的另外一个，塔臂可围绕第一轴心线由水平位置向竖直位置方向旋转，阻尼装置可控制塔臂竖向回转过程中的阻力。该塔吊还包括可脱落配重和行走装置，具有良好的载荷能力、安全性、就位精度和移动便利性。本发明的组装和拆卸方法可实现不依赖重型辅助吊车，快速完成塔吊的组装和拆卸。
The invention discloses a tower crane and an assembly and disassembly method thereof, especially a heavy tower crane, comprising a base, a tower, a tower arm, an upper slewing support, an upper vertical slewing bearing, a damping device, a movable counterweight and a movable counterweight. The counterweight control unit, the movable counterweight control unit controls the movable counterweight to move in the length direction of the tower arm, and the upper vertical slewing bearing includes a first rotating shaft with a first axis and a first bearing, the first axis The line is parallel to the ground and perpendicular to the tower arm, the first rotating shaft is fixedly connected to one of the tower arm and the upper slewing support, the first bearing is fixedly connected to the other one between the two, and the tower arm can surround the first axis line Rotating from the horizontal position to the vertical position, the damping device can control the resistance during the vertical rotation of the tower arm. The tower crane also includes a detachable counterweight and traveling device, which has good load capacity, safety, positioning accuracy and convenience of movement. The assembly and disassembly method of the present invention can realize the rapid completion of assembly and disassembly of the tower crane without relying on a heavy-duty auxiliary crane.
Description
Technical Field
The invention relates to the field of tower cranes, in particular to a tower crane and assembling and disassembling methods thereof.
Background
The tower crane is a hoisting tool with extremely high efficiency and is widely used in the construction industry. With the continuous popularization of the modular construction technology, the requirement on the hoisting capacity of the tower crane is higher and higher, and the tower crane becomes heavy. It is desirable that a heavy tower crane not only have good load-carrying capacity, but also have good moving convenience to meet the complex construction site requirements.
For a tower crane, particularly a heavy tower crane, sudden load loss caused by rope breakage or other reasons is a severe working condition which must be considered. In the tower crane in the prior art, the tower frame and the tower arms are fixedly connected, and the impact force of sudden load loss is instantly transmitted to the tower frame. In order to prevent collapse accidents, the prior art has solved the problem that the size of the tower and the base is continuously increased to improve the bending resistance of the tower body, but the moving convenience of the tower crane is seriously affected, and meanwhile, the cost is continuously increased.
The suspension arm of the tower crane is greatly overhung, so that the control of the hoisting in-place precision is always a difficult problem, if the heavy tower crane is used for hoisting important equipment in place, the in-place precision is a problem which needs to be solved, and the common practice in the prior art is to increase the size of a suspension arm component.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a tower crane and assembling and disassembling methods thereof.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a tower crane comprises a base, a tower frame, a tower arm, an upper slewing bearing, an upper vertical slewing bearing, a damping device, a movable counterweight and a movable counterweight control unit, wherein the tower arm comprises a balance arm and a crane boom, the movable counterweight is installed on the tower arm, the movable counterweight control unit controls the movable counterweight to move in the length direction of the tower arm, the upper vertical slewing bearing is arranged above the upper slewing bearing, the upper vertical slewing bearing comprises a first rotating shaft and a first bearing, the first rotating shaft is provided with a first axial line, the first axial line is parallel to the ground and perpendicular to the tower arm, the first rotating shaft is fixedly connected to one of the tower arm and the upper slewing bearing, the first bearing is fixedly connected to the other one of the tower arm and the upper slewing bearing, the tower arm can rotate from a horizontal position to a vertical position around the first axial line, the damping device is arranged between the tower arm and the upper slewing bearing, or the damping device is arranged between the movable counterweight and the upper slewing bearing to control the resistance of the tower arm in the vertical slewing process.
Preferably, the upper vertical slewing bearing further comprises a second rotating shaft and a second bearing, the second rotating shaft and the second bearing are provided with a second axial line, the second axial line is parallel to the first axial line, the first axial line and the second axial line are respectively close to the balance arm and the crane arm, the second rotating shaft is fixedly connected to one of the tower arm and the upper slewing bearing, the second bearing is fixedly connected to the other one of the tower arm and the upper slewing bearing, and the tower arm can rotate around the first axial line from the horizontal position to the vertical position.
Preferably, the first bearing and the second bearing comprise an open slot with an arc-shaped upper part of the section and a bearing slot with a semicircular lower part of the section, the arc centers of the open slots are the circle centers of the first rotating shaft and the second rotating shaft respectively, when the tower arm rotates around one of the first rotating shaft and the second rotating shaft, one of the first rotating shaft and the second rotating shaft rotates in the bearing slot on the corresponding bearing, and the other one of the first rotating shaft and the second rotating shaft slides in the open slot on the corresponding bearing.
Preferably, the movable counterweight comprises a balance arm movable counterweight arranged on the balance arm and a boom movable counterweight arranged on the boom, the balance arm movable counterweight and the boom movable counterweight are positioned at initial positions close to the tower frame in an idle or walking state, before hoisting operation starts, the balance arm movable counterweight and the boom movable counterweight respectively move to positions close to the outer ends of the balance arm and the boom, the position of the balance arm movable counterweight is kept unchanged in the hoisting operation process, the boom movable counterweight dynamically adjusts the position through a movable counterweight control unit, when the tower arm rotates due to sudden load loss, the balance arm movable counterweight moves towards the tower frame through the movable counterweight control unit, and the boom movable counterweight adjusts the moving direction and position according to moment balance conditions at two sides of the tower frame so as to enable the tower arm to rotate to a horizontal state.
Preferably, the movable counterweight control unit comprises a rotating shaft stress sensor, a movable counterweight driving device and a main control module, the rotating shaft stress sensor is used for monitoring the stress state of the first rotating shaft and/or the second rotating shaft, the main control module sends a driving instruction to the movable counterweight driving device according to the stress state of the first rotating shaft and/or the second rotating shaft, and the movable counterweight driving device drives the movable counterweight to move according to the received driving instruction.
Preferably, the movable counterweight control unit further comprises a load sensor and a movable counterweight position sensor, the load sensor and the movable counterweight position sensor are respectively used for monitoring load moment and movable counterweight moment, the main control module calculates the difference value of the moment at two sides of the balance arm and the crane boom through the load moment and the movable counterweight moment, compares the difference value with the stress state of the first rotating shaft and the stress state of the second rotating shaft monitored by the rotating shaft stress sensor, and judges whether to stop hoisting operation according to the comparison result.
Preferably, the tower crane further comprises a lower vertical slewing bearing arranged at the lower end of the tower, the lower vertical slewing bearing comprises a third rotating shaft and a third bearing, the third rotating shaft is provided with a third axis, the third axis is parallel to the first axis or the second axis, the third rotating shaft is fixedly connected to one of the tower and the base, the third bearing is fixedly connected to the other one of the tower and the base, and the tower revolves around the third axis between a vertical position and a horizontal position in the tower crane assembling or disassembling process.
Preferably, the tower crane further comprises an arm end support arranged at the outer end part of the crane arm or the balance arm, the arm end support comprises a fourth support or a rotating wheel with a fourth axis, the fourth axis is parallel to the first axis or the second axis, the tower arm rotates around the fourth axis between a vertical position and a horizontal position during the assembling or disassembling process of the tower crane, and the rotating wheel can roll on the ground.
Preferably, the damping device is connected with the movable counterweight through the speed changing device and the traction wire, and when the tower arm rotates from the horizontal position to the vertical position around the first axis, the traction wire is driven to drive the movable counterweight to move towards the tower frame, and meanwhile, damping force is generated.
Preferably, the tower crane further comprises a walking device, the walking device comprises a moving unit and a parking unit, the walking device is installed below the base, the moving unit is used for controlling the walking device to drive the base and equipment above the base to move, the moving unit is formed by splicing and modifying a heavy-load axis vehicle and comprises a hydraulic suspension system and a hydraulic system, the tower crane can move without rails, the parking unit comprises a supporting column and a sucking disc, when heavy-load hoisting operation is carried out, the hydraulic suspension driving wheels retract, the supporting column is automatically supported on the ground, and the sucking disc stretches out and adsorbs to the ground.
Preferably, the tower further comprises a detachable weight, the detachable weight is arranged on the balance arm, and when the tower arm rotates to a certain angle, the detachable weight is detached from the tower arm and falls to the ground.
Preferably, the droppable weight comprises a number of weight segments and/or packings, which slide down to the ground step by step after the tower arm has been rotated to a certain angle.
Preferably, before the tower crane travels, the movable counterweight falls from the tower arm to the base, and before the tower crane reaches the hoisting station and starts hoisting operation, the movable counterweight rises from the base to the tower arm.
The tower crane is adopted, and the assembling process of the tower crane comprises the following steps:
1) The method comprises the following steps of erecting a jig frame on the ground, assembling a tower frame and a tower arm on the jig frame, installing an upper vertical slewing bearing on the tower frame, installing a part of a movable counterweight on the tower arm, assembling a base and a walking device below the tower frame, installing a lower vertical slewing bearing on the base, axially connecting the tower arm with the tower frame and the tower frame with the base respectively, installing a first winch and a second winch on the base respectively, and connecting the first winch with the end part of the tower arm by using a first cable;
2) Dismantling the jig frame, starting the first winch, tightening the first cable, enabling the tower arm and the tower frame, and the tower frame and the base to rotate around a shaft, and enabling a rotating wheel supported by an arm end arranged at the end part of the tower arm to roll on the ground until the tower arm is vertical to the ground;
3) Arranging a pulley on the ground, connecting the upper part of the tower frame with a second winch by adopting a second cable through the pulley, and tightening the second cable until the tower frame is vertical to the ground and is attached to the base;
4) Fixedly connecting the tower frame with the base, and removing the first cable and the second cable;
5) Starting a movable counterweight driving device to adjust the position of the movable counterweight, enabling the tower arm to rotate to a horizontal position, and installing the rest part of the movable counterweight;
the disassembly process of the tower crane comprises the following steps:
1) Mounting a jig frame, mounting a first winch and a second winch on a base, removing a part of a movable counterweight, arranging a pulley on the ground, connecting the upper part of a tower frame with the second winch through the pulley by using a second cable, and loosening a fixed connection point of the tower frame and the base;
2) Adjusting the position of the rest part of the movable counterweight on the tower arm for the first time to enable the gravity center moment of the balance arm corresponding to the second axis to be larger than that of the crane boom, and enabling the tower arm to rotate around the second axis to the vertical position;
3) Adjusting the position of the rest part of the movable counterweight on the tower arm for the second time to ensure that the gravity center moment of the crane arm corresponding to the third axis is greater than that of the balance arm;
4) Arranging a slope support on the ground, starting a second winch to loosen a second cable, and rotating the tower frame around a third axis until the end part of the tower arm contacts the slope support and then the second winch pauses;
5) Connecting a first winch with the outer end part of a tower arm by using a first cable, starting the first winch to loosen the first cable, rotating the tower arm and the tower frame as well as the tower frame and the base around a shaft, and rolling a rotating wheel supported by an arm end arranged at the end part of the tower arm on the ground until the tower frame and the tower arm fall back to the tower frame;
6) Removing the first cable and the second cable, removing the connection between the tower, the tower arm and the base, disassembling the rest of the movable counterweight, and removing the jig frame.
The tower crane is adopted, and the assembling process of the tower crane comprises the following steps:
1) Building a jig frame on the ground, assembling a tower frame and a tower arm on the jig frame, installing an upper vertical slewing bearing on the tower frame, installing a part of a movable counterweight on the tower arm, assembling a base and a walking device below the tower frame, installing a lower vertical slewing bearing on the base, and respectively axially connecting the tower arm with the tower frame, the tower frame with the base, a crane boom or a balance arm with the ground, wherein rotating shafts are a first axial lead or a second axial lead, a third axial lead and a fourth axial lead;
2) The jig frame is disassembled, the traveling device is started to move towards the direction of a fixed connection point of the tower arm and the ground, the tower arm and the tower frame, the tower frame and the base, the crane boom or the balance arm and the ground rotate around a shaft, the rotation axis line of the tower arm and the tower frame is gradually changed from one of the first axis line and the second axis line to the other, and when the tower arm is vertical to the ground, the traveling device stops moving;
3) Fixedly connecting the tower frame with the ground by using a cable, removing a fixed connection point of the tower arm and the ground, and continuously moving the walking device until the tower frame is vertical to the ground and is attached to the base;
4) Fixedly connecting the tower frame with the base, loosening the fixed connection point of the cable and the ground, and removing the cable;
5) Starting a movable counterweight driving device to adjust the position of the movable counterweight, enabling the tower arm to rotate to a horizontal position, and installing the rest part of the movable counterweight;
the disassembly process of the tower crane comprises the following steps:
1) Mounting a jig frame, dismantling a movable balance weight of a balance arm and a part of a movable balance weight of a crane arm, fixedly connecting a tower frame with the ground by adopting a cable, and loosening a fixed connection point of the tower frame and a base;
2) The positions of the balance arm movable counterweight and the rest part of the boom movable counterweight on the tower arm are adjusted for the first time, so that the boom gravity center moment corresponding to the second axis is greater than that of the balance arm, and the tower arm rotates to the vertical position around the second axis;
3) Adjusting the positions of the balance arm movable counterweight and the rest part of the boom movable counterweight on the tower arm for the second time to ensure that the gravity center moment of the boom corresponding to the third axis is greater than that of the balance arm;
4) Moving the traveling device to a fixed connection point of the cable and the ground, starting the tower to rotate, stopping the traveling device when the tower arm is in contact with the ground, fixedly connecting the fourth support with the ground, and removing the cable;
5) And continuously moving the traveling device until the tower frame and the tower arm fall back to the jig frame, dismantling the connection among the tower frame, the tower arm and the base, dismantling the rest parts of the movable balance weight of the balance arm and the movable balance weight of the crane boom, and dismantling the jig frame.
The tower crane is adopted, and the assembling process of the tower crane comprises the following steps:
1) The installation of a base and a tower frame is completed by using a common tower crane, and a support frame and a winch are installed at the top of the tower frame;
2) The tower is a double-arm rod, a tower arm is assembled in the middle of the double-arm rod tower, and the tower arm is hung to the top of the tower by a winch;
3) Hoisting the upper slewing bearing, the upper vertical slewing bearing and the damping device to the top of the tower frame by using a lifting hook on the tower arm;
4) The tower arm falls onto the upper vertical slewing bearing by a winch;
5) Dismantling a support frame at the top of the tower and a winch, and installing other accessories of the tower crane;
the disassembly process of the tower crane comprises the following steps:
1) Dismantling relevant accessories at the top of the tower, and installing a support frame at the top of the tower and a winch;
2) Hoisting the tower arm by a winch to separate the tower arm from the upper vertical slewing bearing;
3) Hoisting the upper slewing bearing, the upper vertical slewing bearing and the damping device to the ground by using a lifting hook on the tower arm;
4) Hoisting the tower arm to the ground from the middle position of the double arm rods of the tower frame by using a winch;
5) And (4) dismantling the support frame and the winch at the top of the tower frame by using a common tower crane, and dismantling the tower frame and the base.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the tower crane, the tower arm is arranged to be in the bidirectional rotating structure on the vertical surface relative to the tower frame, and the damping device is used for acting together, so that the impact on the tower frame under the extreme accident working condition is effectively relieved, the bending moment borne by the tower frame is reduced, the design specification and size of the tower frame and the base are reduced, and the safety and the economical efficiency are improved.
(2) According to the tower crane, the balance arm is provided with the detachable balance weight, so that the designed damping force of the damping device can be reduced, and the bending moment born by the tower crane is further reduced.
(3) According to the tower crane, the movable balance weight is arranged on the balance arm, so that two sides of the tower crane are always in a moment balance state during normal hoisting operation, the hoisting in-place precision is improved by arranging the movable balance weight on the crane arm, and special hoisting requirements are met.
(4) The invention applies the heavy-load axis vehicle technology to the traveling device of the tower crane, realizes the trackless convenient movement of the tower crane on the construction site, automatically supports the support column on the ground through the hydraulic suspension function of the axis vehicle, conveniently and quickly adjusts the verticality of the tower crane, further reduces the overturning risk of the tower crane through the parking system with the vacuum adsorption function, and quickly starts the hoisting operation.
(5) The tower crane can fall to the tower crane base through the movable balance weight, so that the gravity center of the tower crane in the moving process is reduced, and the moving safety of the tower crane is improved.
(6) The 3 assembling and disassembling methods provided by the invention can quickly complete the assembling and disassembling of the tower crane without depending on the assistance of a heavy crane.
Drawings
FIG. 1 is a schematic structural diagram of a tower crane according to a first embodiment of the present application;
FIG. 2 is a schematic view illustrating tower arm rotation of a tower crane according to a first embodiment of the present application in an unloaded state;
fig. 3 is a schematic view illustrating a tower arm of a tower crane according to a first embodiment of the present application rotating in an overload state;
FIG. 4 is a schematic view of an upper vertical slewing bearing of a tower crane according to the first embodiment of the application;
FIG. 5 is a schematic connection diagram of a movable counterweight, an upper vertical slewing bearing and a damping device of a tower crane according to the first embodiment of the application;
FIG. 6 is a first schematic view of the assembly and disassembly of a tower crane according to the second embodiment of the present application;
FIG. 7 is a second schematic view illustrating assembly and disassembly of a tower crane according to a second embodiment of the present application;
FIG. 8 is a third schematic view illustrating assembly and disassembly of a tower crane according to the second embodiment of the present application;
FIG. 9 is a fourth schematic illustration of the assembly and disassembly of a tower crane according to the second embodiment of the present application;
FIG. 10 is a first schematic view of assembly and disassembly of a tower crane according to a third embodiment of the present application;
FIG. 11 is a second schematic view illustrating assembly and disassembly of a tower crane according to a third embodiment of the present application;
FIG. 12 is a third schematic view illustrating assembly and disassembly of a tower crane according to a third embodiment of the present application;
FIG. 13 is a first schematic view of assembly and disassembly of a tower crane according to the fourth embodiment of the present application;
FIG. 14 is a second schematic view of assembly and disassembly of a tower crane according to the fourth embodiment of the present application;
FIG. 15 is a third schematic view illustrating assembly and disassembly of a tower crane according to the fourth embodiment of the present application;
FIG. 16 is a fourth schematic illustration of assembly and disassembly of a tower crane of embodiment four of the present application;
reference numerals: 110. a tower arm; 120. an upper vertical slewing bearing; 121. a first rotating shaft; 122. a first bearing; 123. a second rotating shaft; 124. a second bearing; 130. a lower vertical slewing bearing; 140. a damping device; 141. a speed change device; 170. a movable counterweight; 180. a traveling device; 190. an upper slewing bearing; 200. a tower; 210. a base; 230. a support pillar; 240. a jig frame; 250. the counterweight can fall off.
Detailed Description
The invention is further explained below with reference to the figures and the specific embodiments. The drawings are only schematic and can be easily understood, and the specific proportion can be adjusted according to design requirements. The definitions of the top and bottom relationships of the relative elements and the front and back sides of the figures described herein are understood by those skilled in the art to refer to the relative positions of the components and thus all of the components may be flipped to present the same components and still fall within the scope of the present disclosure.
Example one
Referring to fig. 1, an embodiment of the present application provides a tower crane, including a base 210, a tower 200, a tower arm 110, an upper vertical slewing bearing 120, a damping device 140, a movable counterweight 170, and a movable counterweight control unit, where the tower arm 110 includes a balance arm and a boom, an upper end of the tower 200 is provided with an upper slewing bearing 190 and the upper vertical slewing bearing 120, the upper vertical slewing bearing 120 is disposed above the upper slewing bearing 190, the upper vertical slewing bearing 120 includes a first rotating shaft 121 and a first bearing 122, the first rotating shaft has a first axis, the first axis is parallel to the ground and perpendicular to the tower arm, the first rotating shaft is fixedly connected to one of the tower arm 110 and the upper slewing bearing 190, the first bearing 122 is fixedly connected to the other one of the tower arm 110 and the upper slewing bearing 190, and the tower arm 110 is capable of rotating around the first axis from a horizontal position to a vertical position. When a working condition of sudden load loss such as rope breakage occurs in the hoisting process, or the moment of the gravity centers of the tower arms at the two sides of the tower 200 is seriously unbalanced and exceeds the damping moment of the damping device 140 due to the uncontrolled movement of the movable counterweight, referring to fig. 2, the tower arm 110 can rotate from the horizontal position to the vertical position around the first axis, and the boom resilience force and the moment difference at the two sides of the tower 200 generated due to the sudden load loss are partially converted into the kinetic energy of the tower arm 110, so that the direct impact of the tower arm 110 on the tower 200 is avoided, the bending moment borne by the tower 200 is reduced, and then, as the rotation angle of the tower arm 110 increases, the moment difference at the two sides of the tower 200 is gradually reduced, and under the action of the damping device 140, the moving tower arm 110 slowly stops, and the moment at the two sides of the tower 200 is restored to be balanced at a certain angle.
In a particular embodiment, upper vertical slewing bearing 120 further includes a second shaft 123 and a second bearing 124 having a second shaft axis, the second shaft axis being parallel to the first shaft axis, the first and second shaft axes being adjacent to the jib and boom, respectively, the second shaft 123 being fixedly coupled to one of tower arm 110 and upper slewing bearing 190, the second bearing 124 being fixedly coupled to the other of tower arm 110 and upper slewing bearing 190 to allow tower arm 110 to slew between a vertical position and a horizontal position about the second shaft axis. That is, when the first rotating shaft 121 and the second rotating shaft 123 are fixedly connected to the tower arm 110, the first bearing 122 and the second bearing 124 are fixedly connected to the upper pivoting support 190, and when the first rotating shaft 121 and the second rotating shaft 123 are fixedly connected to the upper pivoting support 190, the first bearing 122 and the second bearing 124 are fixedly connected to the tower arm 110, the tower arm 110 can rotate from the horizontal position to the vertical position around the first axis or the second axis according to the rotation direction of the balance arm from the lower boom to the upper boom or from the balance arm to the upper boom to the lower boom. Under the condition of tower crane overload, referring to fig. 3, the tower arm 110 can rotate from the horizontal position to the vertical position around the second axial line, so that the direct influence of overload on the tower 200 is avoided, and under the condition that a sensing system fails, an operator can sense an abnormal state and stop hoisting operation in time.
In a specific embodiment, a lower vertical slewing bearing 130 is further disposed at the lower end of the tower frame 200, the lower vertical slewing bearing 130 is adopted to complete assembling and disassembling of the tower crane without depending on a jacking device, so that cost is saved, the lower vertical slewing bearing 130 comprises a third rotating shaft and a third bearing, the third rotating shaft is provided with a third axis, and the third axis is parallel to the first axis or the second axis. A third pivot shaft and a third bearing are fixedly connected to the tower 200 and the foundation 210, respectively, to pivot the tower 200 about the third axis between a vertical position and a horizontal position. Thus, the tower 200 in the horizontal position, which has been assembled, can be turned upside down, or the tower 200 in the vertical position, which is to be disassembled, can be turned upside down and laid flat.
In a particular embodiment, the first bearing 122 and the second bearing 124 include an open slot with an arc-shaped upper section and a bearing slot with a semicircular lower section. Referring to fig. 4, when the tower arm 110 rotates around one of the first rotating shaft 121 and the second rotating shaft 123, one of the first rotating shaft 121 and the second rotating shaft 123 rotates in the holding groove of its corresponding bearing, and the other of the first rotating shaft 121 and the second rotating shaft 123 slides in the opening groove of its corresponding bearing. The arc centers of the opening grooves with arc-shaped sections at the upper parts of the sections are the centers of the first rotating shaft 121 and the second rotating shaft 123 respectively. When the tower arm 110 rotates around one of the rotation shafts, the other rotation shaft can slide in the arc-shaped opening groove of the upper vertical pivoting support 120 to ensure the stability of the tower arm 110 during the rotation.
In a specific embodiment, the movable counterweight control unit includes a rotation shaft stress sensor, a movable counterweight driving device, and a main control module, the rotation shaft stress sensor is configured to monitor stress states of the first rotation shaft 121 and the second rotation shaft 123, the main control module sends a driving instruction to the movable counterweight driving device according to the stress states of the first rotation shaft 121 and the second rotation shaft 123, and the movable counterweight driving device drives the movable counterweight 170 to move in the length direction of the tower arm 110 according to the received driving instruction.
In one embodiment, the movable weights 170 include a balance arm movable weight provided on the balance arm and a boom movable weight provided on the boom, and in the idle or walking state, the balance arm movable weight and the boom movable weight are both located at initial positions close to the tower 200, so that the center of gravity of the balance arm side and the boom side is closer to the tower 200, and the tower crane is prevented from overturning. Before the hoisting operation starts, the movable balance weight of the balance arm and the movable balance weight of the crane boom respectively move to positions close to the outer ends of the balance arm and the crane boom, the movable balance weight of the balance arm keeps the positions unchanged in the hoisting operation process, and the movable balance weight of the crane boom dynamically adjusts the positions through the movable balance weight control unit to keep the stress balance of the first rotating shaft 121 and the second rotating shaft 123. Under the combined action of the movable counterweight of the crane boom and the lifting load, the stress state and the deformation of the crane boom can be kept relatively constant. The movable counterweight of the crane boom is arranged on the crane boom, so that the problem of hoisting precision can be solved, if no special hoisting precision requirement exists, the movable counterweight does not need to be arranged on the crane boom, and only the movable counterweight needs to be arranged on the balance arm.
In a specific embodiment, the first rotating shaft 121 and the second rotating shaft 123 can directly reflect the moment balance condition on both sides of the tower 200, so the stressed state of the first rotating shaft 121 and the second rotating shaft 123 is detected by the rotating shaft stress sensor of the movable weight control unit, and preferably, the movable weight driving device drives the movable weight 170 to move according to the stressed state of the first rotating shaft 121 and the second rotating shaft 123 under normal working conditions. The movable weight driving device is generally in an unactuated state, and does not drive the movable weight 170 to move; when the difference value of the stress states of the first rotating shaft 121 and the second rotating shaft 123 exceeds a preset threshold value, the movable counterweight driving device is started to drive the movable counterweight 170 to move.
Specifically, referring to fig. 1, under normal operation, the movable weight 170 moves according to the load moment variation, keeping the moment balance on both sides of the tower arm 110, referring to position a of fig. 13. In the tower crane idle state, the movable counterweight 170 and hook move to a position near the tower arm 110; in the tower crane walking state, the movable weight 170 falls down onto the temporary storage rack of the base 210, referring to the position C of fig. 13. Before the tower crane reaches the hoisting station site to begin the hoisting operation, the movable counterweight 170 is raised from the base 210 onto the tower arm 110, see position B of fig. 13. Therefore, the bending moment born by the tower 200 in the working, idle and walking states of the tower crane can be reduced, so that the specification size, the weight and the cost of the tower 200 can be reduced.
In a specific embodiment, the movable counterweight control unit further includes a load sensor and a movable counterweight position sensor, the load sensor and the movable counterweight position sensor are respectively used for monitoring a load moment and a movable counterweight moment, the main control module calculates a difference value of the moments at two sides of the balance arm and the crane boom through the load moment and the movable counterweight moment, compares the difference value with the stress states of the first rotating shaft 121 and the second rotating shaft 123 monitored by the rotating shaft stress sensor, and judges whether to stop the hoisting operation according to a comparison result. So as to avoid safety accidents caused by the faults of the sensing system.
In another embodiment, a detachable weight 250 is further included, and the detachable weight 250 is disposed on the balance arm, such that when the tower arm 110 rotates to a certain angle, the detachable weight 250 begins to detach from the tower arm 110 and fall to the ground. In the preferred embodiment, the dropping weight 250 is disposed at the end of the balance arm, and when the tower arm 110 rotates to a certain angle, the dropping weight 250 is divided into a plurality of parts to drop off in sequence until the moment on both sides of the tower 200 is balanced and the tower arm 110 stops rotating. In a particular embodiment, the droppable weight 250 comprises a number of weight segments and/or fillers which automatically slide down step by step under the influence of gravity during rotation of the tower arm 110, independent of the control system, thereby avoiding risks associated with control system failure. Under accident conditions such as rope breakage, the difficulty of achieving rebalancing on two sides is high only by moving the movable counterweight 170, large damping force is needed only by restoring rebalancing under the action of the damping device, the reduction degree of the bending moment borne by the tower frame 200 is limited, the design value of the damping force of the damping device can be reduced by adopting the mode of the detachable counterweight 250, the moment balance at two ends of the tower arm 110 can be restored quickly, the bending moment borne by the tower frame is reduced greatly, and therefore the purposes of effectively simplifying the tower frame structure and improving the safety are achieved.
In a specific embodiment, considering that the tower arm 110 needs to be turned over and erected on the ground during the tower crane assembly process, the tower crane of the embodiment of the present application further includes an arm end support disposed at the outer end of the crane arm or the balance arm, the arm end support includes a fourth support or a rotating wheel having a fourth axis, the fourth axis is parallel to the first axis or the second axis, in a preferred embodiment, the fourth support or the rotating wheel is disposed at the outer end of the crane arm, and the fourth axis is parallel to the second axis. During the process of assembling or disassembling the tower crane, the fourth support is fixedly connected with the ground, and the tower frame 200 rotates around the fourth axis line between the vertical position and the horizontal position. In another case, the tower 200 swivels between a vertical position and a horizontal position as the wheels roll on the ground.
In a specific embodiment, the damping device 140 is disposed between the tower arm 110 and the upper pivoting support 190, or the damping device 140 is disposed between the movable weight 170 and the upper pivoting support 190, or is implemented by the friction between the rotating shaft and the bearing, so as to control the vertical pivoting speed of the tower arm 110 and absorb the kinetic energy of the tower arm 110. Specifically, the damping device 140 is hinged to the tower arm 110 and the upper pivoting support 190, respectively. In one embodiment, the damping device 140 includes a piston and a piston cylinder, the piston cylinder is divided into a plurality of chambers by the piston, the piston is provided with a plurality of through holes, the chambers are filled with fluid media, and when the tower arm 110 rotates to drive the piston to move, the fluid media flows from one chamber to the other chamber through the through holes. The resistance of the piston to move can be changed by adjusting the number and the diameter of the through holes. In another embodiment, the damping device 140 comprises an elastic device, and the damping force of the elastic device increases as the rotation angle of the tower arm 110 increases. When the rotation angle of the tower arm 110 increases, the damping force of the elastic device gradually increases until the tower arm 110 is at rest to prevent the tower arm 110 from colliding against the tower 200. In a preferred embodiment, referring to fig. 5, the damping device 140 is connected to the movable weight 170 through the transmission 141 and the pull wire, and when the tower arm 110 rotates from the horizontal position to the vertical position around the first axis, the pull wire is driven to pull the movable weight 170 to move towards the tower 200, and simultaneously generate a damping force, so that the damping force can be obtained by moving the weight, and the moment difference between two sides can be reduced. Of course any other well-established damping technique may be used.
In a specific embodiment, the traveling device 180 further comprises a traveling device 180, the traveling device 180 comprises a moving unit and a parking unit, the traveling device 180 is installed below the base 210, the moving unit is used for controlling the traveling device 180 to move the base 210 and equipment above the base 210, and in order to enable the crane to move flexibly and conveniently in a construction site, a fixed rail is not needed in a preferred embodiment, and the crane can freely travel in the site. The mobile unit is formed by splicing and modifying a heavy-load axis vehicle, comprises a hydraulic suspension system and a hydraulic system, can enable the tower crane to move trackless, and has no high requirement on the ground endurance of the walking ground. The parking unit includes support column 230 and sucking disc, and when the hoist and mount operation, hydraulic pressure hangs that the drive wheel contracts, and support column 230 automatic stay in ground, under the circumstances that strong point ground elevation satisfies the requirement, the straightness that hangs down of tower crane tower satisfies the requirement automatically, need not special adjustment. When heavy-load hoisting operation is carried out, the wheels of the axis vehicle and the supporting columns can share the weight of the tower crane, so that the requirement of ground endurance is reduced. The concrete hydraulic suspension drives the sucker to extend out and attach to the ground, the overturn prevention capacity of the tower crane is further improved, and the support column can be fixedly connected with a ground embedded part under more complex and severe working conditions. The movable balance weight moving unit and the parking unit of the balance arm can enable the tower crane to flexibly and quickly move in a construction site, and can quickly enter a hoisting operation state, the movable balance weight 170 is matched with a falling base in the advanced process of the tower crane, and the overturn prevention capacity of the tower crane in the advanced process is further improved
Example two
Corresponding to the first embodiment, the second embodiment of the application provides an assembling method based on the tower crane, and the assembling method comprises the following steps:
1) Referring to fig. 6, a jig frame 240 is set up on the ground, a tower 200 and a tower arm 110 are assembled on the jig frame 240, the tower arm 110 includes a balance arm and a boom, an upper vertical pivoting support 120 is installed on the tower 200, a part of a movable counterweight 170 is installed on the tower arm 110, a base 210 and a traveling device 180 are assembled under the tower 200, a lower vertical pivoting support 130 is installed on the base 210, the tower arm 110 and the tower 200 and the base 210 are axially connected with each other, respectively, rotating shafts are a first axial line or a second axial line and a third axial line, a first winch and a second winch are installed on the base 210, the first winch is connected with an end of the tower arm 110 by a first cable, and the first winch is installed at one end of the base 210 near the boom side.
2) Referring to fig. 7, the jig frame 240 is removed, the first winch is started, the first cable is tightened, the tower arm 110 and the tower 200 are pivoted, and the arm end supported wheel provided at the end of the tower arm 110 rolls on the ground until the tower arm 110 is perpendicular to the ground, and the tower 200 and the base 210 are pivoted.
3) Referring to fig. 8 and 9, a pulley is installed on the ground, the upper portion of the tower 200 is connected to a second winch installed on the base 210 on the side close to the ground fixing point by using a second cable through the pulley, and the second cable is tightened until the tower 200 is perpendicular to the ground and attached to the base 210.
4) The tower 200 is fixedly attached to the foundation 210 and the first and second cables are removed.
5) The movable weight drive is activated to adjust the position of the movable weight 170, rotate the tower arm 110 to a horizontal position, and mount the remainder of the movable weight 170.
Corresponding to the first embodiment, the second embodiment of the present application further provides a disassembling method based on the tower crane, which includes the following steps:
1) Installing a jig frame 240, installing a first winch and a second winch on the base 210, the second winch being arranged on the base 210 on the side close to the fixed point on the ground, the first winch being installed on the end of the base 210 on the side close to the boom, removing a part of the movable counterweight 170, installing a pulley on the ground, connecting the upper part of the tower 200 with the second winch through the pulley by a second cable, and releasing the fixed connection point of the tower 200 with the base 210.
2) The position of the remainder of the movable counterweight 170 on the tower arm 110 is adjusted a first time such that the moment of the center of gravity of the counterweight arm corresponding to the second axis about which the tower arm 110 rotates toward the vertical position is greater than the moment of the center of gravity of the jib.
3) The remaining portion of the movable counterweight 170 is adjusted a second time on the tower arm 110 such that the moment of the center of gravity of the jib, corresponding to the third axis, is greater than the moment of the center of gravity in the balance arm.
4) Referring to fig. 8 and 9, a slope support is provided on the ground, a second winch is started to release the second cable, and the tower 200 is rotated around the third axis line until the second winch is suspended after the tower arm 110 contacts the ground.
5) Referring to fig. 6 and 7, the first winch is connected to the outer end of the tower arm 110 by a first cable, the first cable is released by the first winch, the tower arm 110 and the tower 200 are rotated about the axis between the tower 200 and the foundation 210, and the wheel supported by the arm end provided at the end of the tower arm 110 rolls on the ground until the tower 200 and the tower arm 110 fall back to the tower 200.
6) The overhead first and second cables are removed, the connections between tower 200, tower arm 110 and base 210 are removed, the remainder of movable counterweight 170 is disassembled, and jig frame 240 is removed.
EXAMPLE III
Corresponding to the first embodiment, the third embodiment of the present application provides an assembling method based on the tower crane, including the following steps:
1) Referring to fig. 10, a jig frame 240 is set up on the ground, a tower 200 and a tower arm 110 are assembled on the jig frame 240, an upper vertical slewing bearing 120 is installed on the tower 200, a part of a movable counterweight 170 is installed on the tower arm 110, a base 210 and a traveling device 180 are assembled under the tower 200, a lower vertical slewing bearing 130 is installed on the base 210, the tower arm 110 and the tower 200, the tower 200 and the base 210, and a boom or a balance arm and the ground are axially connected, respectively, rotating shafts are a first axial line or a second axial line, a third axial line and a fourth axial line, in a preferred embodiment, the rotating shafts of the tower arm 110 and the tower 200 are the first axial line, and the rotating shaft between the boom and the ground is the fourth axial line, and the above steps can be performed in a crossed manner.
2) Referring to fig. 11, the jig frame is removed, the traveling device 180 is started to move towards the fixed connection point between the tower arm 110 and the ground, the tower arm 110 and the tower 200, the tower 200 and the base 210, and the boom or the balance arm and the ground rotate around the axis, the rotation axis between the tower arm 110 and the tower 200 gradually changes from one of the first axis or the second axis to the other, when the tower arm 110 is perpendicular to the ground, the traveling device 180 temporarily stops moving, in the preferred embodiment, the boom and the ground rotate around the axis, and the rotation axis between the tower arm 110 and the tower 200 gradually changes from the first axis to the second axis.
3) Referring to fig. 12, the tower 200 is fixedly connected to the ground by using the cable, the fixed connection point of the tower arm 110 to the ground is removed, and the walking device 180 is continuously moved until the tower 200 is perpendicular to the ground and attached to the base 210.
4) The tower 200 is fixedly attached to the base 210, the fixed attachment point of the cable to the ground is released, and the cable is removed.
5) Actuating the movable counterweight drive adjusts the position of the movable counterweight 170, rotates the tower arm 110 to a horizontal position, and mounts the remainder of the movable counterweight 170.
Corresponding to the first embodiment, a third embodiment of the present application further provides a disassembling method based on the tower crane, including the following steps:
1) Jig frame 240 is installed, a portion of movable weight 170 is removed, tower 200 is fixedly attached to the ground using a cable, and the fixed attachment point of tower 200 to base 210 is released.
2) Referring to fig. 12, the position of the remaining portion of the movable counterweight 170 on the tower arm 110 is adjusted a first time such that the moment of center of gravity of one of the jib and counterweight arms corresponding to the second axis or the first axis is greater than the moment of center of gravity of the other of the jib and counterweight arms, the tower arm 110 is rotated about the second axis or the first axis to a vertical position, and in a preferred embodiment, the moment of center of gravity of the jib side corresponding to the second axis is greater than the moment of center of gravity of the counterweight arm side, and the tower arm 110 is rotated about the second axis to a vertical position.
3) The remaining portion of the movable counterweight 170 is positioned on the tower arm 110 a second time such that the moment of the center of gravity of one of the jib or counterweight arms corresponding to the third axis is greater than the moment of the center of gravity of the other of the jib and counterweight arms, and in a preferred embodiment, the moment of the jib side center of gravity corresponds to the third axis being greater than the moment of the counterweight side center of gravity.
4) Referring to fig. 11, the traveling unit 180 is moved toward the fixed connection point of the cable to the ground, the tower 200 starts to rotate, the traveling unit 180 stops moving when the tower arm 110 contacts the ground, as shown in fig. 8, and the fourth bearing is fixedly connected to the ground, and the cable is removed.
5) Referring to fig. 10, the traveling unit 180 is continuously moved until the tower 200 and the tower arm 110 fall back onto the jig frame 240, as shown in fig. 7, the connection between the tower 200, the tower arm 110 and the base 210 is disassembled, the remaining portion of the movable weight 170 is disassembled, and the jig frame 240 is disassembled.
Example four
The fourth embodiment of the application provides an assembling method based on the tower crane, which comprises the following steps:
1) Referring to fig. 13, the installation of the base 210 and the tower 200 is completed by a general tower crane, and a support frame and a winch are installed on the top of the tower 200;
2) Referring to fig. 14, the tower 200 is a double-armed lever, the tower arm 110 is assembled at the middle position of the double-armed lever tower, and the tower arm 110 is hoisted to the top of the tower 200 by a hoist;
3) Referring to fig. 15, upper slewing bearing 190, upper vertical slewing bearing 120 and damping device 140 are hoisted to the top of tower 200 by hooks on tower arm 110;
4) Dropping the tower arm 110 onto the upper vertical slewing bearing 120 with a winch;
5) Referring to fig. 16, the support frame and the winch at the top of the tower 200 are removed and other accessories of the tower crane are installed.
The disassembling method based on the tower crane comprises the following steps:
1) Referring to fig. 16, the relevant accessories at the top of the tower 200 are removed, and the support frame and the winch at the top of the tower 200 are installed;
2) Hoisting the tower arm 110 by a winch to separate the tower arm from the upper vertical slewing bearing 120;
3) Referring to fig. 15, upper slewing bearing 190, upper vertical slewing bearing 120 and damping device 140 are hoisted to the ground with a hook on tower arm 110;
4) Referring to fig. 14, the tower arm 110 is hoisted to the ground from the middle position of the double arm pole of the tower 200 by a hoist;
5) Referring to fig. 13, the tower 200 and the base 210 are dismantled by removing the support frame and the hoist at the top of the tower 200 using a general tower crane.
The above embodiments are only used to further illustrate the tower crane and the assembling and disassembling method thereof, but the present invention is not limited to the embodiments, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (16)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511274194.9A CN121180875A (en) | 2022-02-15 | 2022-03-11 | A mobile heavy-duty tower crane |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210138680 | 2022-02-15 | ||
| CN2022101386808 | 2022-02-15 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511274194.9A Division CN121180875A (en) | 2022-02-15 | 2022-03-11 | A mobile heavy-duty tower crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115258969A true CN115258969A (en) | 2022-11-01 |
| CN115258969B CN115258969B (en) | 2025-09-30 |
Family
ID=83758268
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511274194.9A Pending CN121180875A (en) | 2022-02-15 | 2022-03-11 | A mobile heavy-duty tower crane |
| CN202210242592.2A Active CN115258969B (en) | 2022-02-15 | 2022-03-11 | Tower crane and assembly and disassembly method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511274194.9A Pending CN121180875A (en) | 2022-02-15 | 2022-03-11 | A mobile heavy-duty tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN121180875A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115676654A (en) * | 2022-11-02 | 2023-02-03 | 宋丰伟 | a tower crane |
| CN116281684A (en) * | 2023-03-20 | 2023-06-23 | 徐州建机工程机械有限公司 | A structure and method for unbalanced tilting and moving counterweight of a tower crane jib |
| CN116573558A (en) * | 2023-05-31 | 2023-08-11 | 徐州建机工程机械有限公司 | Safety protection device and tower crane for preventing tower crane from falling |
| CN116621059A (en) * | 2023-05-31 | 2023-08-22 | 徐州建机工程机械有限公司 | A short-stroke trolley cross-beam tower crane balance weight shedding device and working method |
| CN116654808A (en) * | 2023-06-01 | 2023-08-29 | 徐州建机工程机械有限公司 | A tower crane jib overturn protection mechanism and using method thereof |
| CN116692706A (en) * | 2023-05-31 | 2023-09-05 | 徐州建机工程机械有限公司 | Tower crane |
| CN119637726A (en) * | 2025-01-16 | 2025-03-18 | 中国安能集团第一工程局有限公司 | Hoisting equipment for tower sections |
| CN119797200A (en) * | 2025-01-09 | 2025-04-11 | 中国水利水电第三工程局有限公司 | A safety warning method for tower crane crossing existing rail transit line |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT169627B (en) * | 1949-07-29 | 1951-12-10 | Hans Ing Briggen | crane |
| US3285445A (en) * | 1964-04-27 | 1966-11-15 | Broziat Horst | Mobile crane having a double-armed jib |
| US5609260A (en) * | 1996-02-05 | 1997-03-11 | Liao; Fu-Chang | Derrick structure |
| DE19912758A1 (en) * | 1999-03-22 | 2000-09-28 | Sebastian Hoeppner | Crane with movable counter weight has limit switches registering when jib unit tilts forwards or back and sending signal to electronic switch to cause counter weight to adapt automatically |
| CN101362577A (en) * | 2007-08-06 | 2009-02-11 | 山东建筑大学 | Full hydraulic truck tower crane |
| CN101519178A (en) * | 2008-02-25 | 2009-09-02 | 迈可应用机械有限公司 | Crane and method thereof |
| CN201942450U (en) * | 2010-11-16 | 2011-08-24 | 云南建工第五建设有限公司 | Automatic crane balance controller |
| CN103508340A (en) * | 2013-10-12 | 2014-01-15 | 王亚 | Lifting-following rotary-type self-balancing tower crane |
| CN106744393A (en) * | 2017-03-03 | 2017-05-31 | 合肥工业大学 | Hoisting apparatus and control method with regulation stabilizing mechanism |
| CN106853949A (en) * | 2016-12-23 | 2017-06-16 | 深圳市福田区青少年科技教育协会 | A kind of tower crane device |
| CN109516390A (en) * | 2018-12-29 | 2019-03-26 | 浙江省特种设备检验研究院 | A kind of flat-top tower crane and field installation process convenient for manpower transport's installation |
| CN212475876U (en) * | 2020-04-23 | 2021-02-05 | 苏州市盛隆橡塑制品有限公司 | Material handling loop wheel machine frock is used in production of fan damping ring |
-
2022
- 2022-03-11 CN CN202511274194.9A patent/CN121180875A/en active Pending
- 2022-03-11 CN CN202210242592.2A patent/CN115258969B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT169627B (en) * | 1949-07-29 | 1951-12-10 | Hans Ing Briggen | crane |
| US3285445A (en) * | 1964-04-27 | 1966-11-15 | Broziat Horst | Mobile crane having a double-armed jib |
| US5609260A (en) * | 1996-02-05 | 1997-03-11 | Liao; Fu-Chang | Derrick structure |
| DE19912758A1 (en) * | 1999-03-22 | 2000-09-28 | Sebastian Hoeppner | Crane with movable counter weight has limit switches registering when jib unit tilts forwards or back and sending signal to electronic switch to cause counter weight to adapt automatically |
| CN101362577A (en) * | 2007-08-06 | 2009-02-11 | 山东建筑大学 | Full hydraulic truck tower crane |
| CN101519178A (en) * | 2008-02-25 | 2009-09-02 | 迈可应用机械有限公司 | Crane and method thereof |
| CN201942450U (en) * | 2010-11-16 | 2011-08-24 | 云南建工第五建设有限公司 | Automatic crane balance controller |
| CN103508340A (en) * | 2013-10-12 | 2014-01-15 | 王亚 | Lifting-following rotary-type self-balancing tower crane |
| CN106853949A (en) * | 2016-12-23 | 2017-06-16 | 深圳市福田区青少年科技教育协会 | A kind of tower crane device |
| CN106744393A (en) * | 2017-03-03 | 2017-05-31 | 合肥工业大学 | Hoisting apparatus and control method with regulation stabilizing mechanism |
| CN109516390A (en) * | 2018-12-29 | 2019-03-26 | 浙江省特种设备检验研究院 | A kind of flat-top tower crane and field installation process convenient for manpower transport's installation |
| CN212475876U (en) * | 2020-04-23 | 2021-02-05 | 苏州市盛隆橡塑制品有限公司 | Material handling loop wheel machine frock is used in production of fan damping ring |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115676654A (en) * | 2022-11-02 | 2023-02-03 | 宋丰伟 | a tower crane |
| CN116281684A (en) * | 2023-03-20 | 2023-06-23 | 徐州建机工程机械有限公司 | A structure and method for unbalanced tilting and moving counterweight of a tower crane jib |
| CN116281684B (en) * | 2023-03-20 | 2024-12-24 | 徐州建机工程机械有限公司 | Shedding structure and method for unbalanced inclined movable balancing weight of tower crane arm frame |
| CN116573558A (en) * | 2023-05-31 | 2023-08-11 | 徐州建机工程机械有限公司 | Safety protection device and tower crane for preventing tower crane from falling |
| CN116621059A (en) * | 2023-05-31 | 2023-08-22 | 徐州建机工程机械有限公司 | A short-stroke trolley cross-beam tower crane balance weight shedding device and working method |
| CN116692706A (en) * | 2023-05-31 | 2023-09-05 | 徐州建机工程机械有限公司 | Tower crane |
| CN116654808A (en) * | 2023-06-01 | 2023-08-29 | 徐州建机工程机械有限公司 | A tower crane jib overturn protection mechanism and using method thereof |
| CN119797200A (en) * | 2025-01-09 | 2025-04-11 | 中国水利水电第三工程局有限公司 | A safety warning method for tower crane crossing existing rail transit line |
| CN119797200B (en) * | 2025-01-09 | 2026-01-02 | 中国水利水电第三工程局有限公司 | A safety early warning method for tower cranes crossing existing rail transit lines |
| CN119637726A (en) * | 2025-01-16 | 2025-03-18 | 中国安能集团第一工程局有限公司 | Hoisting equipment for tower sections |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115258969B (en) | 2025-09-30 |
| CN121180875A (en) | 2025-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115258969B (en) | Tower crane and assembly and disassembly method thereof | |
| CN113148864B (en) | Crane and control method thereof | |
| US8550266B2 (en) | Ring derrick with stationary counterweight | |
| CN120272671A (en) | Converter body installation positioning system and method based on ladle car | |
| CN118529606A (en) | Hoisting device for boiler installation | |
| CN108750995A (en) | A kind of lifting apparatus used for steel girder erection | |
| CN113148863B (en) | Crane and control method thereof | |
| CN120157073B (en) | A material elevator for civil engineering | |
| CN108657968B (en) | Telescopic crane capable of preventing steel rope from falling off | |
| CN117142366A (en) | Tower crane and installation method thereof | |
| CN112477734B (en) | Construction pipeline moving device | |
| CN103510742B (en) | Multifunctional rotating pole | |
| CN208454365U (en) | A kind of lifting apparatus used for steel girder erection | |
| CN219341672U (en) | Lifting device for energy storage equipment overhauls usefulness | |
| CN113772566B (en) | Mechanical equipment for ship lifting | |
| CN216109975U (en) | Underground cylindrical stereo garage platform lifting system | |
| CN111792542A (en) | A remove gallows for building bridge railing construction | |
| CN215824611U (en) | Steel construction welding operation platform | |
| CN222181613U (en) | A ring rail crane for petrochemical industry | |
| CN220564168U (en) | Tower crane | |
| CN222526278U (en) | An eccentric wellhead adjustable support structure | |
| CN219636802U (en) | A double-rope forced drive lift | |
| CN119841210B (en) | A bridge drainage pipe lifting device and working method thereof | |
| CN223522179U (en) | A suspension device for installing power equipment | |
| CN223303984U (en) | Assembled prefabricated component hoist device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |