CN216549326U - Accurate positioning balance system for tower crane - Google Patents

Accurate positioning balance system for tower crane Download PDF

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Publication number
CN216549326U
CN216549326U CN202220668286.0U CN202220668286U CN216549326U CN 216549326 U CN216549326 U CN 216549326U CN 202220668286 U CN202220668286 U CN 202220668286U CN 216549326 U CN216549326 U CN 216549326U
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China
Prior art keywords
trolley
amplitude
variable
tower crane
counterweight
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CN202220668286.0U
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Chinese (zh)
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王玉金
刘新波
崔然
浮志强
陈艳
薛闯
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Henan Weihua Heavy Machinery Co Ltd
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Henan Weihua Heavy Machinery Co Ltd
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Abstract

The utility model discloses an accurate positioning balance system for a tower crane, which comprises a tower crane main body structure, wherein a rear girder of the tower crane main body structure is provided with a counterweight trolley, and the rear girder is provided with a counterweight trolley driving structure capable of driving the counterweight trolley to move along the rear girder; the front girder of the tower crane main body structure is provided with a variable-amplitude trolley, and the front girder is provided with a variable-amplitude trolley driving structure capable of driving the variable-amplitude trolley to move along the front girder; the bottom of the supporting leg of the tower crane main body structure is provided with a rotary base. The utility model can sense the pressure change of the supporting leg in real time and transmit the pressure change to the external controller in time, and the controller enables the counter weight trolley traction mechanism or the amplitude variation trolley traction mechanism to execute corresponding actions to drive the respective winding drums to rotate positively and reversely so as to enable the steel wire rope to pull the amplitude variation trolley or the counter weight trolley to move relatively on the track, thereby ensuring the relative balance and stability of the whole tower crane system, enabling the hoisting to be safer, more reliable and more stable and avoiding the unbalanced stress at the bottom of the main structure of the tower crane.

Description

Accurate positioning balance system for tower crane
Technical Field
The utility model relates to the technical field of cranes, in particular to an accurate positioning balance system for a tower crane.
Background
As is known, a tower crane is called a tower crane for short, and a boom is mounted on a rotating crane on the upper part of a tower body of a high tower. With the increasing demand of the jib tower crane, especially the operation in a high-rise narrow space, higher requirements are provided for the balance and safety of the jib luffing tower crane, so that the jib tower crane needs to ensure the balance between lifting torque and stabilizing torque in the operation process so as to ensure the overall stability of the tower crane, reduce the bending moment borne by a tower body and improve the stress condition of the tower body, but the balance of a balance arm and a jib is adjusted by increasing or decreasing a plurality of balancing weights in the conventional jib tower crane in a counterweight mode, so that the conventional jib tower crane is inconvenient to install and disassemble, time-consuming and labor-consuming, has high risk coefficient and is not beneficial to safe operation;
a Chinese patent with an authorization publication number of CN214879790U discloses a luffing jib tower crane, which comprises a lower tower body, wherein a swing mechanism is installed on the upper end surface of the lower tower body, a balance arm and a crane boom are respectively installed on the left side and the right side of the middle part of the upper tower body, a counterweight fence is installed at the left end of the balance arm, sliding grooves are formed in the front end surface and the rear end surface of the counterweight fence in a penetrating manner, sliding blocks are connected to the inner parts of the two sliding grooves in a sliding manner, and a counterweight block is fixedly connected between the two sliding blocks. Driving motor is installed in the left side of counter weight fence, driving motor's output fixedly connected with telescopic link, the right-hand member of telescopic link and the left end face fixed connection of balancing weight, and the balancing weight passes through two sliders and two spout sliding connection, and it passes through the weight of heavy object, then the length of telescopic link is adjusted to the motor, changes lifting torque, and control and result of use are not obvious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, provides an accurate positioning balance system for a tower crane, ensures the relative balance and stability of the whole tower crane system, ensures that the hoisting is safer, more reliable and more stable, avoids unbalanced stress at the bottom of a tower crane main body structure, and can effectively solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: an accurate positioning balance system for a tower crane comprises a tower crane main body structure, wherein a rear girder of the tower crane main body structure is provided with a counterweight trolley, and the rear girder is provided with a counterweight trolley driving structure capable of driving the counterweight trolley to move along the rear girder; the front girder of the tower crane main body structure is provided with a variable-amplitude trolley, and the front girder is provided with a variable-amplitude trolley driving structure capable of driving the variable-amplitude trolley to move along the front girder; a rotary base is arranged at the bottom of the supporting leg of the tower crane main body structure;
the counterweight trolley driving structure comprises a counterweight trolley traction mechanism, a counterweight trolley guide wheel I and a counterweight trolley guide wheel II, wherein the counterweight trolley guide wheel I and the counterweight trolley guide wheel II are correspondingly arranged at two ends of the rear crossbeam; a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism, one end of the steel wire rope bypasses a counterweight trolley guide wheel I to be connected with the counterweight trolley, and the other end of the steel wire rope bypasses a counterweight trolley guide wheel II to be connected with the counterweight trolley;
the variable-amplitude trolley driving structure comprises a variable-amplitude trolley traction mechanism, a first variable-amplitude trolley guide wheel and a second variable-amplitude trolley guide wheel, wherein the first variable-amplitude trolley guide wheel and the second variable-amplitude trolley guide wheel are correspondingly arranged at two ends of the front crossbeam; a steel wire rope is wound on a winding drum of the variable amplitude trolley traction mechanism, one end of the steel wire rope bypasses a second variable amplitude trolley guide wheel to be connected with the variable amplitude trolley, and the other end of the steel wire rope bypasses the first variable amplitude trolley guide wheel to be connected with the variable amplitude trolley;
the rotary base comprises an upper welding plate, a mandrel and a lower bottom plate, the mandrel is arranged at the center of the upper portion of the lower bottom plate, the upper welding plate is sleeved on the mandrel, a plurality of pressure sensors are mounted between the upper welding plate and the lower bottom plate at intervals, the inner wall of a through hole of the upper welding plate is provided with an arc-shaped bulge, and the arc-shaped bulge is abutted to the outer wall of the mandrel.
Preferably, the tower crane further comprises a controller, the pressure sensor feeds back signals to the controller, and the controller controls the counterweight trolley traction mechanism and the luffing trolley traction mechanism to execute corresponding actions, so that the counterweight trolley traction mechanism correspondingly drives the counterweight trolley to move, and the luffing trolley traction mechanism correspondingly drives the luffing trolley to move, and further, the two sides of the main structure of the tower crane are dynamically balanced.
Preferably, the counterweight trolley traction mechanism and the luffing trolley traction mechanism are consistent in structure and comprise a speed reducer and a winding drum, and the speed reducer drives the winding drum to rotate.
Preferably, the counterweight trolley guide wheel I, the counterweight trolley guide wheel II, the variable amplitude trolley guide wheel I and the variable amplitude trolley guide wheel II are consistent in structure and respectively comprise guide wheels, pulley supports and a base, and the guide wheels are installed on the side faces of the base through the pulley supports.
Preferably, the upper end of the mandrel is provided with a gland, and the gland is positioned in the through hole of the upper welding plate and close to the arc-shaped bulge.
Preferably, the counterweight trolley comprises a trolley frame, wheels are arranged at the lower part of the trolley frame, and the trolley frame is further provided with a configuration block.
Preferably, the variable amplitude trolley comprises a trolley frame, wheels are arranged at the lower part of the trolley frame, and the trolley frame is further provided with a pulley block.
Compared with the prior art, the utility model has the beneficial effects that: this a accurate positioning balance system for tower crane, utilize the rotating base of tower machine major structure bottom, the change of pressure to it of real-time perception supporting leg is and in time transmit external control ware, controller control electrical apparatus makes counter weight dolly drive mechanism or change width of cloth dolly drive mechanism and carry out corresponding action to drive respective reel and make wire rope pull change width of cloth dolly or counter weight dolly and make relative motion on the track by positive and negative rotation, thereby guaranteed the relative balance stability of whole tower crane system, make the handling safe and reliable steady more, avoid tower machine major structure bottom atress unbalanced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a schematic view of a rotary base according to the present invention;
FIG. 4 is a schematic structural view of a counterweight trolley traction mechanism or a luffing trolley traction mechanism according to the present invention;
FIG. 5 is a schematic view of the structure of the guide wheel of the present invention;
FIG. 6 is a schematic view of the counterweight trolley of the present invention;
FIG. 7 is a schematic structural view of a luffing dolly of the utility model.
In the figure: 1 tower crane main structure, 2 counter weight dolly drive mechanism, 3 counter weight dolly guide wheel one, 4 counter weight dollies, 5 counter weight dolly guide wheel two, 6 slewing pedestal, 6.1 upper weld plate, 6.11 arc arch, 6.2 dabber, 6.21 gland, 6.3 lower plate, 6.4 pressure sensor, 7 become width of cloth dolly, 8 become width of cloth dolly guide wheel one, 9 become width of cloth dolly drive mechanism, 10 become width of cloth dolly guide wheel two.
Detailed Description
In the following description, the technical solutions of the present invention will be described with reference to the drawings of the embodiments of the present invention, and it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary to indicate or imply that the indicated devices or elements have a specific orientation:
referring to fig. 1-7, the present invention provides a technical solution: an accurate positioning balance system for a tower crane comprises a tower crane main body structure 1, wherein a rear girder of the tower crane main body structure 1 is provided with a counterweight trolley 4, and the rear girder is provided with a counterweight trolley driving structure capable of driving the counterweight trolley 4 to move along the rear girder; the front girder of the tower crane main body structure 1 is provided with a variable-amplitude trolley 7, and the front girder is provided with a variable-amplitude trolley driving structure capable of driving the variable-amplitude trolley 7 to move along the front girder; the bottom of the supporting leg of the tower crane main body structure 1 is provided with a rotary base 6, and specifically, the bottom of the tower crane main body structure 1 is provided with four supporting legs;
as shown in fig. 2, the counterweight trolley driving structure comprises a counterweight trolley traction mechanism 2, a counterweight trolley guide wheel I3 and a counterweight trolley guide wheel II 5, wherein the counterweight trolley guide wheel I3 and the counterweight trolley guide wheel II 5 are correspondingly arranged at two ends of the rear girder; a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism 2, one end of the steel wire rope bypasses a counterweight trolley guide wheel I3 and is connected with a counterweight trolley 4, and the other end of the steel wire rope bypasses a counterweight trolley guide wheel II 5 and is connected with the counterweight trolley 4; when a winding drum of the counterweight trolley traction mechanism 2 acts, the winding drum winds up a steel wire rope, and the steel wire rope pulls the counterweight trolley 4 to move along the rear girder under the guiding action of a counterweight trolley guide wheel I3 and a counterweight trolley guide wheel II 5;
the variable-amplitude trolley driving structure comprises a variable-amplitude trolley traction mechanism 9, a first variable-amplitude trolley guide wheel 8 and a second variable-amplitude trolley guide wheel 10, wherein the first variable-amplitude trolley guide wheel 8 and the second variable-amplitude trolley guide wheel 10 are correspondingly arranged at the two ends of the front crossbeam; a steel wire rope is wound on a winding drum of the amplitude-variable trolley traction mechanism 9, one end of the steel wire rope bypasses a second amplitude-variable trolley guide wheel 10 to be connected with the amplitude-variable trolley 7, and the other end of the steel wire rope bypasses a first amplitude-variable trolley guide wheel 8 to be connected with the amplitude-variable trolley 7; when a winding drum of the amplitude variation trolley traction mechanism 9 acts, the winding drum winds up the steel wire rope, and the steel wire rope pulls the amplitude variation trolley 7 to move along the front girder under the guiding action of the amplitude variation trolley guide wheel I8 and the amplitude variation trolley guide wheel II 10;
specifically, the rotary base 6 comprises an upper welding plate 6.1, a mandrel 6.2 and a lower base plate 6.3, the mandrel 6.2 is arranged at the center of the upper part of the lower base plate 6.3, the upper welding plate 6.1 is sleeved on the mandrel 6.2, a plurality of pressure sensors 6.4 are arranged between the upper welding plate 6.1 and the lower base plate 6.3 at intervals, four pressure sensors 6.4 are arranged, an annular arc-shaped bulge 6.11 is arranged on the inner wall of a through hole of the upper welding plate 6.1, and the arc-shaped bulge 6.11 is abutted to the outer wall of the mandrel 6.2; the supporting leg pressure sensor can rotationally deflect relative to the mandrel 6.2, the corresponding pressure sensor 6.4 senses a pressure value and transmits a pressure signal when the rotational deflection occurs, in the embodiment, the pressure sensor 6.4 is a 50t ZY-shaped pressure sensor, and the upper end of the pressure sensor 6.4 corresponds to the lower surface of the upper welding plate 4.1, so that the stress state of the supporting leg can be monitored in real time;
the utility model also comprises a controller, wherein a pressure sensor 6.4 feeds back signals to the controller, and the controller controls the counterweight trolley traction mechanism 2 and the luffing trolley traction mechanism 9 to execute corresponding actions, so that the counterweight trolley traction mechanism 2 correspondingly drives the counterweight trolley 4 to move, and the luffing trolley traction mechanism 9 correspondingly drives the luffing trolley 7 to move, and further, the two sides of the tower crane main body structure 1 can be dynamically balanced;
as shown in fig. 4, the counterweight trolley traction mechanism 2 and the luffing trolley traction mechanism 9 both comprise a speed reducer and a winding drum in a consistent structure, and the speed reducer drives the winding drum to rotate;
as shown in fig. 5, the counterweight trolley guide wheel I3, the counterweight trolley guide wheel II 5, the variable amplitude trolley guide wheel I8 and the variable amplitude trolley guide wheel II 10 all comprise guide wheels, pulley supports and bases in a consistent structure, and the guide wheels are installed on the side surfaces of the bases through the pulley supports;
the upper end of the mandrel 6.2 is provided with a gland 6.21, and the gland 6.21 is positioned in the through hole of the upper welding plate 6.1 and close to the arc-shaped bulge 6.11;
as shown in fig. 6, the counterweight trolley 4 comprises a trolley frame, wheels are arranged at the lower part of the trolley frame, and the trolley frame is also provided with a configuration block;
as shown in fig. 7, the variable amplitude trolley 7 comprises a trolley frame, wheels are arranged at the lower part of the trolley frame, and the trolley frame is further provided with a pulley block.
When the utility model is implemented, the amplitude changing trolley 7 lifts a heavy object, the load of the heavy object acts on the rotary base 6 at the bottom of the supporting leg of the tower machine main body structure 1, the pressure sensor 6.4 on the rotary base 6 senses the stress state of the supporting leg, when the heavy object is lifted, the corresponding lifting moment is increased or decreased, the stress of the supporting leg of the tower machine main body structure 1 is correspondingly increased or decreased, the numerical value is different, at the moment, the pressure sensor 6.4 feeds back signals to the controller, the controller transmits information to the information receiver of the counterweight trolley traction mechanism 2 through calculation and controls the positive and negative rotation of the speed reducer of the counterweight trolley traction mechanism 2 through the control electric appliance, the counterweight trolley traction mechanism 2 correspondingly drives the counterweight trolley 4 to move, so that the counterweight moment and the load moment are equal, namely, the numerical value of the pressure sensor 6.4 on the rotary base 6 is consistent, at the moment, two sides of the tower machine main body structure 1 are balanced, the supporting legs of the tower crane main body structure 1 are stressed evenly; when the heavy object needs to be moved, the amplitude-variable trolley traction mechanism 9 drives the heavy object to move through the lifting hook, and in the moving process, the controller controls the counterweight trolley traction mechanism 2 to correspondingly drive the counterweight trolley 4 to move through the real-time signal feedback of the pressure sensor 6.4, so that the two sides of the tower crane main body structure 1 can be always in dynamic balance in the operation process.
The present invention is not described in detail in the prior art.

Claims (7)

1. The utility model provides a precision positioning balanced system for tower crane, includes tower machine major structure (1), its characterized in that: the rear girder of the tower crane main body structure (1) is provided with a counterweight trolley (4), and the rear girder is provided with a counterweight trolley driving structure capable of driving the counterweight trolley (4) to move along the rear girder; the front girder of the tower crane main body structure (1) is provided with a variable-amplitude trolley (7), and the front girder is provided with a variable-amplitude trolley driving structure capable of driving the variable-amplitude trolley (7) to move along the front girder; a rotary base (6) is arranged at the bottom of a supporting leg of the tower crane main body structure (1);
the counterweight trolley driving structure comprises a counterweight trolley traction mechanism (2), a counterweight trolley guide wheel I (3) and a counterweight trolley guide wheel II (5), wherein the counterweight trolley guide wheel I (3) and the counterweight trolley guide wheel II (5) are correspondingly arranged at two ends of the rear girder; a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism (2), one end of the steel wire rope bypasses a counterweight trolley guide wheel I (3) and is connected with a counterweight trolley (4), and the other end of the steel wire rope bypasses a counterweight trolley guide wheel II (5) and is connected with the counterweight trolley (4);
the variable-amplitude trolley driving structure comprises a variable-amplitude trolley traction mechanism (9), a first variable-amplitude trolley guide wheel (8) and a second variable-amplitude trolley guide wheel (10), wherein the first variable-amplitude trolley guide wheel (8) and the second variable-amplitude trolley guide wheel (10) are correspondingly arranged at two ends of the front girder; a steel wire rope is wound on a winding drum of the amplitude-variable trolley traction mechanism (9), one end of the steel wire rope bypasses a second amplitude-variable trolley guide wheel (10) and is connected with the amplitude-variable trolley (7), and the other end of the steel wire rope bypasses a first amplitude-variable trolley guide wheel (8) and is connected with the amplitude-variable trolley (7);
rotating base (6) are including last welded plate (6.1), dabber (6.2) and lower plate (6.3), and the upper portion center of lower plate (6.3) is equipped with dabber (6.2), goes up welded plate (6.1) and cup joints on dabber (6.2), and goes up and install a plurality of pressure sensor (6.4) between welded plate (6.1) and lower plate (6.3) at the interval, the through-hole inner wall of going up welded plate (6.1) is equipped with and is annular arc arch (6.11), arc arch (6.11) are contradicted with dabber (6.2) outer wall.
2. The precise positioning balance system for the tower crane according to claim 1, wherein: the tower crane main structure comprises a tower crane main structure body (1), and is characterized by further comprising a controller, wherein a pressure sensor (6.4) feeds back signals to the controller, and the controller controls a counterweight trolley traction mechanism (2) and an amplitude trolley traction mechanism (9) to execute corresponding actions, so that the counterweight trolley traction mechanism (2) correspondingly drives the counterweight trolley (4) to move, and the amplitude trolley traction mechanism (9) correspondingly drives the amplitude trolley (7) to move, and further, the two sides of the tower crane main structure body (1) are dynamically balanced.
3. The precise positioning balance system for the tower crane according to claim 1, wherein: the counterweight trolley traction mechanism (2) and the variable-amplitude trolley traction mechanism (9) are consistent in structure and comprise a speed reducer and a winding drum, and the speed reducer drives the winding drum to rotate.
4. The precise positioning balance system for the tower crane according to claim 1, wherein: the counterweight trolley guide wheel I (3), the counterweight trolley guide wheel II (5), the variable amplitude trolley guide wheel I (8) and the variable amplitude trolley guide wheel II (10) are consistent in structure and respectively comprise guide wheels, pulley supports and a base, and the guide wheels are installed on the side faces of the base through the pulley supports.
5. The precise positioning balance system for the tower crane according to claim 1, wherein: the upper end of the mandrel (6.2) is provided with a gland (6.21), and the gland (6.21) is positioned in the through hole of the upper welding plate (6.1) and is close to the arc-shaped bulge (6.11).
6. The precise positioning balance system for the tower crane according to claim 1, wherein: the counterweight trolley (4) comprises a trolley frame, wheels are arranged on the lower portion of the trolley frame, and the trolley frame is further provided with a configuration block.
7. The precise positioning balance system for the tower crane according to claim 1, wherein: the amplitude variation trolley (7) comprises a trolley frame, wheels are arranged at the lower part of the trolley frame, and the trolley frame is further provided with a pulley block.
CN202220668286.0U 2022-03-26 2022-03-26 Accurate positioning balance system for tower crane Active CN216549326U (en)

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CN202220668286.0U CN216549326U (en) 2022-03-26 2022-03-26 Accurate positioning balance system for tower crane

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115215237A (en) * 2022-09-19 2022-10-21 浙江省北大信息技术高等研究院 Tower crane intelligent trolley for changing amplitude and intelligent tower crane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115215237A (en) * 2022-09-19 2022-10-21 浙江省北大信息技术高等研究院 Tower crane intelligent trolley for changing amplitude and intelligent tower crane

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