CN114380215B - Tower crane for building - Google Patents
Tower crane for building Download PDFInfo
- Publication number
- CN114380215B CN114380215B CN202210303560.9A CN202210303560A CN114380215B CN 114380215 B CN114380215 B CN 114380215B CN 202210303560 A CN202210303560 A CN 202210303560A CN 114380215 B CN114380215 B CN 114380215B
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- CN
- China
- Prior art keywords
- tower crane
- trolley
- wire rope
- steel wire
- girder
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—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 supported by columns, e.g. towers having their lower end mounted for slewing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- 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
- B66C23/82—Luffing gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
Abstract
The invention discloses a tower crane used on a building, which comprises a tower crane base, wherein the upper part of the tower crane base is rotatably connected with a tower crane main body mechanism through a rotary base assembly, one side of the tower crane main body mechanism is provided with a front girder, an amplitude-variable trolley which controls a lifting hook to move along the front girder is matched on the front girder in a sliding manner, the front girder is provided with an amplitude-variable trolley traction mechanism which can drive the amplitude-variable trolley to move along the front girder, and one end of the rear girder, which is far away from the tower crane main body mechanism, is provided with a lifting winch mechanism which controls the lifting hook to lift; the lifting device has multiple functions, ensures the relative balance and stability of the whole tower crane system in real time in the lifting process, ensures that the lifting is safer, more reliable and more stable, and avoids the unbalanced stress at the bottom of the tower crane; the steel wire rope is effectively prevented from falling off from the rope groove when being wound and unwound, and the using effect is obvious; the traction force of the variable-amplitude trolley can be monitored in real time, and the variable-amplitude trolley has the function of emergency braking when a rope is broken.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a tower crane for a building.
Background
At present, the tower crane is mainly used for integral, rapid assembly and hoisting of large-scale equipment and has the functions of lifting, rotating, horizontal hoisting and the like. With the increasing demand of the jib tower crane, especially the operation in a high-rise narrow space, higher requirements are put forward on the balance and safety of the jib luffing tower crane, so that the jib tower crane needs to ensure the balance between the lifting moment and the stabilizing moment in the operation process so as to ensure the overall stability of the tower crane, reduce the bending moment borne by the tower body and improve the stress condition of the tower body, but the balance of the balance arm and the crane arm is adjusted by increasing and 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 assemble and disassemble, wastes time and labor, has high risk coefficient and is not beneficial to safe operation; and current reel anticreep rope generally adopts one to be close to the reel and with the parallel compression roller of reel, makes wire rope get into the grooving through the compression roller in, in use compression roller and wire rope are in rolling friction all the time, and the compression roller wearing and tearing aggravation damages easily, and the later stage still can appear out of groove or dislocation phenomenon, and the dolly that becomes width of cloth does not have disconnected rope in addition and detects and brake function, has certain potential safety hazard.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the existing defects and providing the tower crane for the building, which ensures the relative balance and stability of the whole tower crane system in real time in the hoisting process, ensures that the hoisting is safer, more reliable and more stable, and avoids the unbalanced stress at the bottom of the tower crane; the steel wire rope is effectively prevented from falling off from the rope groove when being wound and unwound, and the using effect is obvious; can real-time supervision become the traction force of width of cloth dolly, become width of cloth dolly moreover and possess the rope breaking emergency brake function, have that the function is various, the safety in utilization is high, the operation is accurate advantage such as steady, can effectively solve the problem among the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a tower crane used on a building comprises a tower crane base, wherein the upper part of the tower crane base is rotatably connected with a tower crane main body mechanism through a rotary base assembly, one side of the tower crane main body mechanism is provided with a front girder, a luffing dolly for controlling a lifting hook to move along the front girder is slidably matched on the front girder, the front girder is provided with a luffing dolly traction mechanism capable of driving the luffing dolly to move along the front girder, and one end of a rear girder far away from the tower crane main body mechanism is provided with a lifting winch mechanism for controlling the lifting hook to lift; the other side of the tower crane main body mechanism is provided with a rear girder, a counterweight trolley is matched on the rear girder in a sliding way, and the rear girder is provided with a counterweight trolley traction mechanism capable of driving the counterweight trolley to move along the rear girder;
a steel wire rope is wound on a winding drum of the amplitude-variable trolley traction mechanism, two ends of the steel wire rope are connected with the amplitude-variable trolley by bypassing the first guide wheels, and the two first guide wheels are correspondingly arranged at two ends of the front girder; a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism, two ends of the steel wire rope are connected with the counterweight trolley by bypassing the two guide wheels, and the two guide wheels are correspondingly arranged at two ends of the rear girder; the bottoms of four supporting legs at the lower part of the rotary base assembly are provided with rotary bases; the rotary base comprises an upper welding plate, a mandrel and a lower base plate, the mandrel is arranged in the center of the upper part of the lower base plate, the upper welding plate is sleeved on the mandrel, four pressure sensors are arranged between the upper welding plate and the lower base plate at intervals, an annular arc-shaped bulge is arranged on the inner wall of a through hole of the upper welding plate, and the arc-shaped bulge is abutted against the outer wall of the mandrel;
the winding drum of the hoisting mechanism is provided with an anti-rope-dropping structure, the anti-rope-dropping structure comprises an annular supporting frame sleeved outside the winding drum, the circumferential direction of the outer wall of the annular supporting frame is spirally provided with a plurality of roller assemblies, and the plurality of roller assemblies are in rolling fit with the rope groove of the winding drum; the outer wall of the annular supporting frame is provided with a steel wire rope guiding assembly, the steel wire rope guiding assembly comprises a fixed support, the fixed support is rotatably connected with a rotating shaft through a shaft sleeve, one end of the rotating shaft is fixedly provided with a shell, a first pulley block and a second pulley block which are in rolling fit with the steel wire rope and are arranged in pairs are arranged in the shell, and through holes for the steel wire rope to pass in and out are correspondingly arranged on the back sides of the two phases of the shell;
the roller wheel assembly comprises a roller wheel mounting shell fixedly connected with the outer wall of the annular supporting frame, the roller wheel mounting shell is provided with a hollow cavity, two back side surfaces of the roller wheel mounting shell are respectively provided with a slot in a Y shape, the bottom of each slot is in a semicircular arc shape, a roller wheel is adapted in the cavity, two ends of a wheel shaft of the roller wheel are correspondingly adapted to the bottom of each slot, a pressing plate is further arranged on the upper portion of the roller wheel mounting shell, two sides of the upper portion of the pressing plate are fixedly connected with the roller wheel mounting shell through bolts, positioning support legs adapted to the slots are arranged on the lower portions of the pressing plate, the bottoms of the positioning support legs are in semicircular arc shapes and adapted to wheel shafts of the roller wheels, and the bottom of each slot and the bottoms of the positioning support legs are enclosed into a circular groove for rotation of the wheel shafts of the roller wheels.
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 tower crane main body structure are dynamically balanced.
Preferably, the outer wall circumference of the annular support frame is spirally provided with through holes for the roller wheel rims of the plurality of roller assemblies to correspondingly penetrate one by one.
Preferably, the fixed support is fixedly connected with the outer wall of the annular support frame through a bolt, the fixed support is provided with a threaded sleeve, and the outer wall of the shaft sleeve is provided with a screw rod in threaded connection with the threaded sleeve; the shaft body threaded connection of rotation axis has two stop nuts, and two stop nuts correspond and are located the both ends of axle sleeve.
Preferably, one pulley block is rotatably arranged in the shell and comprises two pulleys which are arranged oppositely, and the steel wire rope penetrates through a gap between the two pulleys; the shell is also inserted with a wheel carrier, a second pulley block is arranged on the inner side of the wheel carrier and comprises two pulleys which are arranged oppositely, and a steel wire rope penetrates through a gap between the two pulleys; the plane where the two pulleys of the first pulley block are located is perpendicular to the plane where the two pulleys of the second pulley block are located.
Preferably, both ends of the amplitude-variable trolley are correspondingly connected with a steel wire rope for drawing the amplitude-variable trolley to move through a detection mechanism; the detection mechanism comprises a connecting seat and a connecting arm, the connecting seat corresponds to and is fixedly connected with the amplitude-variable trolley, a pressure sensor is arranged on the side face of the connecting seat, an arm body of the connecting arm is correspondingly hinged to the connecting seat through a hinged seat, one end of the connecting arm corresponds to and is connected with the steel wire rope through a turnbuckle, and the other end of the connecting arm corresponds to and is pressed on the pressure sensor.
Preferably, both sides of the bottom of the amplitude variation trolley are provided with brake devices capable of tightly holding the track, and each brake device comprises a mounting seat, a cam and a driving motor; four corner ends in mount pad bottom all rotate and are connected with the cam, and the shaft of cam runs through the mount pad perpendicularly, and the mount pad top is equipped with and is used for driving the rotatory driving motor of cam, thereby the rim of cam is equipped with and corresponds the orbital block rubber of hugging closely of contradicting with the corresponding side of track.
Preferably, the rotary base assembly is further provided with an automatic oil supply system, and the automatic oil supply system comprises a gear pump oil supply device and an oil supply pipeline; the gear pump oil supply device supplies oil to a ball cavity of a slewing bearing of the slewing pedestal assembly through an oil supply pipeline, the gear pump oil supply device is located on the inner side of the slewing bearing and close to an inner gear ring of the slewing bearing, the gear pump oil supply device comprises a gear pump, a first shell and a gear, the gear pump is located on the upper portion of the first shell, the gear is located in the first shell, the gear is meshed with the inner gear ring of the slewing bearing and drives the gear pump to work, an oil storage tank communicated with an inlet of the gear pump is arranged on the upper portion of the gear pump, and a working chamber of the gear pump is communicated with the oil supply pipeline.
Preferably, the one end that tower crane main part mechanism was kept away from to preceding girder and the one end that tower crane main part mechanism was kept away from to back girder all are equipped with the arm-tie that is connected with tower crane main part mechanism top.
Compared with the prior art, the invention has the beneficial effects that:
1. the four rotary bases at the bottom of the rotary base assembly are utilized to sense the pressure change of the four support legs to the four support legs in real time and transmit the pressure change to an external controller in time, and the controller controls an electric appliance to enable a counterweight trolley traction mechanism and an amplitude-variable trolley traction mechanism to perform corresponding actions, so that respective winding drums are driven to rotate positively and negatively to enable a steel wire rope to pull the amplitude-variable trolley or the counterweight trolley to move relatively on a track, the relative balance and stability of the whole tower crane system are ensured, the hoisting is safer, more reliable and more stable, and the unbalanced stress at the bottom of a main body structure of the tower crane is avoided;
2. the annular support frame is provided with the plurality of roller assemblies which are spirally arranged, the plurality of roller assemblies are in rolling fit with the rope grooves of the roller, the annular support frame is further provided with the steel wire rope guide assembly, the steel wire rope guide assembly is in rolling fit with the steel wire rope through the two pairs of pulley assemblies, when the winding drum winds and unwinds the steel wire rope, the steel wire rope moves in the axis direction of the winding drum, the steel wire rope pulls the steel wire rope guide assembly, the steel wire rope guide assembly can move along with the steel wire rope and can be limited in the corresponding rope grooves at any time, the steel wire rope is effectively prevented from being separated from the rope grooves when being unwound and unwound, the problem that two sections of steel wire ropes are wound when the double winding drum is used can be avoided, and the use effect is obvious;
3. the gear pump supplies oil to the ball cavity of the slewing bearing through the oil supply pipeline, no additional oil supply power equipment is needed, self-driven oil supply lubrication is realized, and oil supply and reliable operation are realized in mechanical operation;
4. the amplitude-variable trolley has the functions of rope breakage detection and braking, the steel wire rope acts on one end of the connecting arm, the other end of the connecting arm acts on the pressure sensor through the lever principle, the traction force of the amplitude-variable trolley pulled by the steel wire rope is monitored in real time, when abnormality occurs, the pressure sensor feeds back the traction force to the external controller, and the external controller controls the driving motor of the braking device to act, so that the amplitude-variable trolley is braked in time by holding the track tightly, and major accidents caused by the fact that the amplitude-variable trolley continues to slide due to rope breakage are avoided.
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 diagram of a hoisting mechanism of the present invention;
fig. 5 is a schematic diagram of an anti-rope-dropping structure of the hoisting mechanism of the invention;
FIG. 6 is a schematic view of a portion of the structure of FIG. 5;
FIG. 7 is a schematic view of the roller assembly of the present invention;
FIG. 8 is a schematic view of a wire rope guide assembly according to the present invention;
FIG. 9 is a schematic view of a portion of the structure of FIG. 8;
FIG. 10 is a schematic structural view of a luffing dolly traction mechanism and a counterweight dolly traction mechanism of the invention;
FIG. 11 is a schematic view of a first and a second guiding wheel according to the present invention;
FIG. 12 is a schematic view of the counterweight trolley of the present invention;
FIG. 13 is a first schematic structural diagram of a variable amplitude trolley of the invention;
FIG. 14 is a schematic structural view of a luffing dolly of the invention;
FIG. 15 is a schematic view of the detecting mechanism of the present invention;
FIG. 16 is a schematic view of a braking device according to the present invention;
FIG. 17 is a bottom view of FIG. 16;
FIG. 18 is a schematic view of an automatic oil supply system according to the present invention;
FIG. 19 is a schematic view of the oil supply device of the gear pump of the present invention.
In the figure:
1, a lifting hook;
2, a variable amplitude trolley;
3 a luffing trolley traction mechanism;
4, pulling a plate;
5, a tower crane main body mechanism;
6, a counterweight trolley traction mechanism;
7 lifting and hoisting mechanism;
8, a counterweight trolley;
9, a rear girder;
10 a rotating base assembly;
11, a tower crane base;
12 front girders;
13 rotary base, 13.1 upper welding plate, 13.2 mandrel, 13.3 lower base plate and 13.4 pressure sensor;
14 roller assemblies, 14.1 pressing plates, 14.2 rollers and 14.3 roller mounting shells;
15 an annular support frame;
16 steel wire rope guide assemblies, 16.1 fixed supports, 16.2 rotating shafts, 16.3 shaft sleeves, 16.4 pulley block I, 16.5 shells and 16.6 pulley block II;
the detection mechanism 17, the connecting seat 17.1, the connecting arm 17.2, the turn buckle 17.3 and the hinged seat 17.4;
18 brake devices, 18.1 mounting seats, 18.2 cams, 18.3 driving motors and 18.4 rubber blocks;
a 19 gear pump oil supply device, a 19.1 gear pump, a 19.2 shell I, a 19.3 gear and a 19.4 oil storage tank;
20 oil supply line.
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 the terms "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary that the indicated device or element has a specific orientation:
referring to fig. 1-19, the present invention provides a technical solution: a tower crane used on a building comprises a tower crane base 11, the upper part of the tower crane base 11 is rotatably connected with a tower crane main body mechanism 5 through a rotary base assembly 10, one side of the tower crane main body mechanism 5 is provided with a front girder 12, an amplitude-variable trolley 2 which controls a lifting hook to move along the front girder 12 is slidably matched on the front girder 12, the front girder 12 is provided with an amplitude-variable trolley traction mechanism 3 which can drive the amplitude-variable trolley 2 to move along the amplitude-variable trolley traction mechanism, and one end of a rear girder 9 far away from the tower crane main body mechanism 5 is provided with a lifting winch mechanism 7 which controls the lifting hook to lift; a rear girder 9 is arranged on the other side of the tower crane main body mechanism 5, a counterweight trolley 8 is matched on the rear girder 9 in a sliding manner, and the rear girder 9 is provided with a counterweight trolley traction mechanism 6 capable of driving the counterweight trolley 8 to move along the rear girder 9;
as shown in fig. 2, a steel wire rope is wound on a winding drum of the luffing trolley traction mechanism 3, two ends of the steel wire rope are connected with the luffing trolley 2 by bypassing a first guide wheel, the two first guide wheels are correspondingly installed at two ends of the front girder 12, when the winding drum of the luffing trolley traction mechanism 3 acts, the winding drum winds the steel wire rope, and the steel wire rope pulls the luffing trolley 2 to move along the front girder 12 through the guiding action of the two first guide wheels, so that the lifting hook 1 at the lower part of the luffing trolley can be moved, and a heavy object under the lifting hook 1 can be horizontally moved; a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism 6, two ends of the steel wire rope are connected with the counterweight trolley 8 by bypassing the second guide wheels, the two guide wheels are correspondingly arranged at two ends of the rear girder 9, when the winding drum of the counterweight trolley traction mechanism 6 acts, the winding drum winds the steel wire rope, the steel wire rope pulls the counterweight trolley 8 to move along the rear girder 9 under the guiding action of the second guide wheels, and the overall balance is kept by matching with the relative movement of the amplitude-variable trolley 2; the bottoms of four supporting legs at the lower part of the rotary base assembly 10 are respectively provided with a rotary base 13;
as shown in fig. 3, the rotating base 13 includes an upper welding plate 13.1, a mandrel 13.2 and a lower base plate 13.3, the mandrel 13.2 is arranged at the center of the upper portion of the lower base plate 13.3, the upper welding plate 13.1 is sleeved on the mandrel 13.2, four pressure sensors 13.4 are installed between the upper welding plate 13.1 and the lower base plate 13.3 at intervals, an annular arc-shaped protrusion is arranged on the inner wall of a through hole of the upper welding plate 13.1, and the arc-shaped protrusion is abutted against the outer wall of the mandrel 13.2; the pressure sensor 13.4 can rotationally deflect relative to the mandrel 13.2, and when the rotational deflection occurs, the corresponding pressure sensor 13.4 senses a pressure value and transmits a pressure signal, in the embodiment, the pressure sensor 13.4 is a 50t ZY-shaped pressure sensor, and the upper end of the pressure sensor 13.4 corresponds to the lower surface of the upper welding plate 13.1, so that the stress states of the four supporting legs can be monitored in real time;
further, the tower crane further comprises a controller, the pressure sensor 13.4 feeds back signals to the controller, and the controller controls the counterweight trolley traction mechanism 6 and the luffing trolley traction mechanism 3 to execute corresponding actions, so that the counterweight trolley traction mechanism 6 correspondingly drives the counterweight trolley 8 to move, and the luffing trolley traction mechanism 3 correspondingly drives the luffing trolley 2 to move, and further, the two sides of the tower crane main body structure 5 can be dynamically balanced, so that the relative balance and stability of the whole tower crane system are ensured, the hoisting is safer, more reliable and more stable, and the unbalanced stress at the bottom of the tower crane is avoided;
as shown in fig. 5, 6, 8 and 9, the winding drum of the hoisting mechanism 7 is provided with an anti-rope-dropping structure, specifically, the anti-rope-dropping structure includes an annular support frame 15 sleeved outside the winding drum, a plurality of roller assemblies 14 are spirally arranged on the outer wall circumference of the annular support frame 15, and the plurality of roller assemblies 14 are in rolling fit with the rope grooves of the winding drum; the outer wall of the annular support frame 15 is provided with a steel wire rope guide assembly 16, the steel wire rope guide assembly 16 comprises a fixed support 16.1, the fixed support 16.1 is rotatably connected with a rotating shaft 16.2 through a shaft sleeve 16.3, one end of the rotating shaft 16.2 is fixed with a shell 16.5, a first pulley block 16.4 and a second pulley block 16.6 which are matched with the steel wire rope in a rolling way and are arranged in pairs are arranged in the shell 16.5, through holes for the steel wire rope to pass in and out are correspondingly arranged at the two back sides of the shell 16.5, a plurality of roller assemblies 14 which are spirally arranged are arranged on the annular support frame 15, the plurality of roller assemblies 14 are matched with rope grooves of a roller in a rolling way, the steel wire rope guide assembly 16 is further arranged on the annular support frame 15 and is matched with the steel wire rope in a rolling way through two pairs of pulley assemblies, when the steel wire rope is wound and unwound by the roller, the roller moves in the axial direction of the winding drum, the steel wire rope pulls the steel wire rope guide assembly 16, the annular support frame 15 is matched with the rope grooves of the winding drum in a rolling way through the plurality of roller assemblies 14 and can move synchronously along the axial direction of the winding drum, the wire rope winding device can move along with the wire rope and limit the wire rope in the corresponding rope groove at any time, so that the wire rope is effectively prevented from being separated from the rope groove when being wound and unwound, the problem that two sections of wire ropes are wound when the wire rope winding device is used in a duplex winding drum can be avoided, and the using effect is remarkable;
as shown in fig. 7, specifically, the roller assembly 14 includes a roller mounting housing 14.3 fixedly connected to the outer wall of the annular supporting frame 15, the roller mounting housing 14.3 has a hollow cavity, two opposite sides of the roller mounting housing 14.3 are both provided with Y-shaped slots, the bottom of the slot is in a semi-arc shape, a roller 14.2 is adapted in the cavity, two ends of a wheel shaft of the roller 14.2 are correspondingly adapted to the bottom of the slot, the upper portion of the roller mounting housing 14.3 is further provided with a pressing plate 14.1, two sides of the upper portion of the pressing plate 14.1 are fixedly connected to the roller mounting housing 14.3 through bolts, the lower portion of the pressing plate 14.1 is provided with positioning legs adapted to the slot, the bottom of the positioning legs is in a semi-arc shape and adapted to the wheel shaft of the roller 14.2, and the bottom of the slot and the bottom of the positioning legs enclose a circular slot for the wheel shaft of the roller 14.2 to rotate, through holes for the wheel rims of the rollers 14.2 of the plurality of the roller assembly 14 to pass through one by one another are spirally arranged on the outer wall of the annular supporting frame 15, the roller 14.2 is limited in the roller mounting shell 14.3 through the pressing plate 14.1, so that the installation and the disassembly are convenient, the pressing plate 14.1 is connected with the roller mounting shell 14.3 through bolts, and the two ends of the wheel shaft of the roller 14.2 are correspondingly limited at the bottoms of the two grooves through the positioning supporting legs, so that the wheel rim of the roller 14.2 is abutted against and matched with the rope grooves of the winding drum in a rolling manner;
furthermore, in order to facilitate disassembly and assembly, the fixed support 16.1 is fixedly connected with the outer wall of the annular support frame 15 through a bolt, the fixed support 16.1 is provided with a threaded sleeve, and the outer wall of the shaft sleeve 16.3 is provided with a screw rod in threaded connection with the threaded sleeve; two limiting nuts are connected to the shaft body of the rotating shaft 16.2 through threads, the two limiting nuts are correspondingly located at two ends of the shaft sleeve 16.3, the shaft sleeve 16.3 is positioned to rotate through the two limiting nuts, and axial movement along the rotating shaft 16.2 is avoided;
as shown in fig. 9, the first pulley block 16.4 is rotatably mounted in the housing 16.5, the first pulley block 16.4 includes two pulleys arranged oppositely, and the steel wire rope passes through a gap between the two pulleys; the shell 16.5 is also inserted with a wheel carrier, a second pulley block 16.6 is arranged at the inner side of the wheel carrier, the second pulley block 16.6 comprises two pulleys which are arranged oppositely, and a steel wire rope passes through a gap between the two pulleys; the plane of the two pulleys of the first pulley block 16.4 is vertical to the plane of the two pulleys of the second pulley block 16.6, the first pulley block 16.4 and the second pulley block 16.6 are arranged to be matched with the winding and unwinding of the steel wire rope, and the steel wire rope can well penetrate through the steel wire rope guide assembly 16 during winding and unwinding;
as shown in fig. 10, the variable-amplitude trolley traction mechanism 2 and the counterweight trolley traction mechanism 6 both comprise a speed reducer and a winding drum in a consistent structure, the speed reducer drives the winding drum to rotate, and the speed reducer is a variable-frequency speed reducer;
as shown in fig. 12, the counterweight trolley 8 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. 14 and 15, both ends of the luffing trolley 2 are correspondingly connected with a steel wire rope for dragging the luffing trolley 2 to move through a detection mechanism 17; the detection mechanism 17 comprises a connecting seat 17.1 and a connecting arm 17.2, the connecting seat 17.1 is correspondingly and fixedly connected with the amplitude-variable trolley 2, a pressure sensor is arranged on the side surface of the connecting seat 17.1, the arm body of the connecting arm 17.2 is correspondingly hinged with the connecting seat 17.1 through a hinge seat 17.4, one end of the connecting arm 17.2 is correspondingly connected with the steel wire rope through a turnbuckle 17.3, the other end of the connecting arm 17.2 is correspondingly pressed on the pressure sensor, the traction force of the steel wire rope is monitored in real time through the pressure sensor, a safety threshold value can be set, if the traction force of the steel wire rope exceeds the safety threshold value range, an alarm signal is sent out, and the accidental rope breakage accident caused by the fact that the traction force exceeds the safety bearing range of the steel wire rope is prevented;
as shown in fig. 16 and 17, two sides of the bottom of the luffing carriage 2 are respectively provided with a brake device 18 capable of tightly holding the track, and each brake device 18 comprises a mounting seat 18.1, a cam 18.2 and a driving motor 18.3; four corner ends at the bottom of the mounting seat 18.1 are rotatably connected with cams 18.2, a wheel shaft of each cam 18.2 vertically penetrates through the mounting seat 18.1, a driving motor 18.3 used for driving the cam 18.2 to rotate is arranged at the top of the mounting seat 18.1, a rubber block 18.4 capable of correspondingly abutting against the corresponding side edge of the track to tightly grip the track is arranged on the rim of the cam 18.2, the cam 18.3 drives the cam to rotate for 18.2, the cam 18.2 drives the rubber block 18.4 to move close to the track and enables the rubber block 18.4 to correspondingly abut against the corresponding side edge of the track to tightly grip the track, and the purpose of braking is achieved;
as shown in fig. 18 and 19, the rotating base assembly 10 is further provided with an automatic oil supply system, which includes a gear pump oil supply device 19 and an oil supply pipeline 20; the gear pump oil supply device 19 supplies oil to a ball cavity of a slewing bearing of the slewing pedestal assembly 10 through an oil supply pipeline 20, the gear pump oil supply device 19 is positioned on the inner side of the slewing bearing and close to an inner gear ring of the slewing bearing, the gear pump oil supply device 19 comprises a gear pump 19.1, a shell I19.2 and a gear 19.3, the gear pump 19.1 is positioned on the upper portion of the shell I19.2, the gear 19.3 is positioned in the shell I19.2, the gear 19.3 is meshed with the inner gear ring of the slewing bearing and drives the gear pump 19.1 to work, an oil storage tank 19.4 communicated with an inlet of the gear pump 19.1 is arranged on the upper portion of the gear pump 19.1, a working chamber of the gear pump 19.1 is communicated with the oil supply pipeline 20, the gear pump 19.3 is driven to rotate through self-rotation of the slewing bearing, the gear pump 19.3 drives the gear pump 19.3 to act, the 19.1 supplies oil to the ball cavity of the slewing bearing through the oil pipeline 20, no additional oil supply power equipment is needed, self-driven oil supply is realized, and lubrication, mechanical operation is realized, mechanical operation is, The operation is reliable;
in addition, the one end that tower crane main part mechanism 5 was kept away from to preceding girder 12 and the one end that tower crane main part mechanism 5 was kept away from to back girder 9 all are equipped with the arm-tie 4 that is connected with tower crane main part mechanism 5 top, increase the overall structure intensity of tower crane.
The present invention is not described in detail in the prior art.
Claims (9)
1. The utility model provides a tower crane for on building, includes tower crane base (11), its characterized in that: the upper part of the tower crane base (11) is rotatably connected with a tower crane main body mechanism (5) through a rotary base assembly (10), one side of the tower crane main body mechanism (5) is provided with a front girder (12), the front girder (12) is in sliding fit with a variable-amplitude trolley (2) for controlling a lifting hook (1) to move along the front girder (12), the front girder (12) is provided with a variable-amplitude trolley traction mechanism (3) capable of driving the variable-amplitude trolley (2) to move along the front girder, and one end of a rear girder (9) far away from the tower crane main body mechanism (5) is provided with a lifting winch mechanism (7) for controlling the lifting hook (1) to lift; a rear girder (9) is arranged on the other side of the tower crane main body mechanism (5), a counterweight trolley (8) is matched on the rear girder (9) in a sliding manner, and a counterweight trolley traction mechanism (6) capable of driving the counterweight trolley (8) to move along is arranged on the rear girder (9);
a steel wire rope is wound on a winding drum of the amplitude variation trolley traction mechanism (3), two ends of the steel wire rope are connected with the amplitude variation trolley (2) by bypassing the first guide wheels, and the two first guide wheels are correspondingly arranged at two ends of the front girder (12); a steel wire rope is wound on a winding drum of the counterweight trolley traction mechanism (6), two ends of the steel wire rope are connected with the counterweight trolley (8) by bypassing the guide wheels II, and the two guide wheels II are correspondingly arranged at two ends of the rear girder (9); the bottoms of four supporting legs at the lower part of the rotary base assembly (10) are respectively provided with a rotary base (13); the rotary base (13) comprises an upper welding plate (13.1), a mandrel (13.2) and a lower base plate (13.3), the mandrel (13.2) is arranged at the center of the upper part of the lower base plate (13.3), the upper welding plate (13.1) is sleeved on the mandrel (13.2), four pressure sensors (13.4) are arranged between the upper welding plate (13.1) and the lower base plate (13.3) at intervals, an annular arc-shaped bulge is arranged on the inner wall of a through hole of the upper welding plate (13.1), and the arc-shaped bulge is abutted to the outer wall of the mandrel (13.2);
an anti-rope-dropping structure is arranged on a winding drum of the hoisting mechanism (7), the anti-rope-dropping structure comprises an annular supporting frame (15) sleeved outside the winding drum, a plurality of roller assemblies (14) are spirally arranged on the outer wall of the annular supporting frame (15) in the circumferential direction, and the plurality of roller assemblies (14) are in rolling fit with a rope groove of the winding drum; the steel wire rope guide assembly (16) is arranged on the outer wall of the annular support frame (15), the steel wire rope guide assembly (16) comprises a fixed support (16.1), the fixed support (16.1) is rotatably connected with a rotating shaft (16.2) through a shaft sleeve (16.3), a shell (16.5) is fixed at one end of the rotating shaft (16.2), a first pulley block (16.4) and a second pulley block (16.6) which are in rolling fit with the steel wire rope and are arranged in pairs are arranged in the shell (16.5), and through holes for the steel wire rope to enter and exit are correspondingly formed in the two back sides of the shell (16.5);
the roller wheel assembly (14) comprises a roller wheel mounting shell (14.3) fixedly connected with the outer wall of the annular supporting frame (15), the roller wheel mounting shell (14.3) is provided with a hollow cavity, Y-shaped grooves are formed in two back side surfaces of the roller wheel mounting shell (14.3), the bottom of each groove is in a semicircular arc shape, a roller wheel (14.2) is adapted in each cavity, two ends of a wheel shaft of the roller wheel (14.2) are correspondingly adapted to the bottom of each groove, a pressing plate (14.1) is further arranged on the upper portion of the roller wheel mounting shell (14.3), two sides of the upper portion of the pressing plate (14.1) are fixedly connected with the roller wheel mounting shell (14.3) through bolts, positioning support legs adapted to the grooves are arranged on the lower portion of the pressing plate (14.1), the bottom of each positioning support leg is in a semicircular arc shape and adapted to the wheel shaft of the roller wheel (14.2), and circular grooves for rotation of the wheel shafts of the roller wheel wheels (14.2) are defined by the bottoms of the grooves and the positioning support legs.
2. A tower crane for a building according to claim 1, wherein: the tower crane further comprises a controller, a pressure sensor (13.4) feeds back signals to the controller, and the controller controls the counterweight trolley traction mechanism (6) and the luffing trolley traction mechanism (3) to execute corresponding actions, so that the counterweight trolley traction mechanism (6) correspondingly drives the counterweight trolley (8) to move, and the luffing trolley traction mechanism (3) correspondingly drives the luffing trolley (2) to move, and further, the two sides of the tower crane main body mechanism (5) are dynamically balanced.
3. A tower crane for a building according to claim 1, wherein: the outer wall of the annular supporting frame (15) is spirally provided with through holes for the wheel rims (14.2) of the roller assemblies (14) to correspondingly penetrate through one by one in the circumferential direction.
4. A tower crane for a building according to claim 1, wherein: the fixed support (16.1) is fixedly connected with the outer wall of the annular support frame (15) through a bolt, the fixed support (16.1) is provided with a threaded sleeve, and the outer wall of the shaft sleeve (16.3) is provided with a screw rod in threaded connection with the threaded sleeve; the shaft body of the rotating shaft (16.2) is in threaded connection with two limiting nuts, and the two limiting nuts are correspondingly located at two ends of the shaft sleeve (16.3).
5. A tower crane for a building according to claim 1, wherein: the pulley block I (16.4) is rotatably arranged in the shell (16.5), the pulley block I (16.4) comprises two pulleys which are oppositely arranged, and the steel wire rope penetrates through a gap between the two pulleys; the shell (16.5) is also inserted with a wheel carrier, a second pulley block (16.6) is arranged on the inner side of the wheel carrier, the second pulley block (16.6) comprises two pulleys which are arranged oppositely, and a steel wire rope penetrates through a gap between the two pulleys; the plane of the two pulleys of the first pulley block (16.4) is vertical to the plane of the two pulleys of the second pulley block (16.6).
6. A tower crane for a building according to claim 1, wherein: both ends of the amplitude variation trolley (2) are correspondingly connected with a steel wire rope for dragging the amplitude variation trolley (2) to move through a detection mechanism (17); detection mechanism (17) are including connecting seat (17.1) and linking arm (17.2), and connecting seat (17.1) corresponds the fastening connection with change width of cloth dolly (2), and the side of connecting seat (17.1) is equipped with pressure sensor, and the arm body of linking arm (17.2) corresponds articulatedly with connecting seat (17.1) through articulated seat (17.4), and the one end of linking arm (17.2) is passed through basket of flowers bolt (17.3) and is corresponded with wire rope and be connected, and the other end of linking arm (17.2) corresponds the crimping on pressure sensor.
7. A tower crane for a building according to claim 1, wherein: the two sides of the bottom of the amplitude variation trolley (2) are respectively provided with a brake device (18) capable of tightly holding the track, and each brake device (18) comprises a mounting seat (18.1), a cam (18.2) and a driving motor (18.3); four angle ends in mount pad (18.1) bottom all rotate and are connected with cam (18.2), and the shaft of cam (18.2) runs through mount pad (18.1) perpendicularly, and mount pad (18.1) top is equipped with and is used for driving rotatory driving motor (18.3) of cam (18.2), thereby the rim of cam (18.2) is equipped with and corresponds conflict with the corresponding side of track and hold up orbital rubber block (18.4) tightly.
8. A tower crane for a building according to claim 1, wherein: the rotary base assembly (10) is also provided with an automatic oil supply system, and the automatic oil supply system comprises a gear pump oil supply device (19) and an oil supply pipeline (20); gear pump oil supply unit (19) are located the slewing bearing inboard and are close to its ring gear through fuel feeding line (20) to the slewing bearing ball chamber fuel feeding of slewing pedestal assembly (10), gear pump oil supply unit (19) are located slewing bearing, gear pump oil supply unit (19) include gear pump (19.1), casing (19.2) and gear (19.3), gear pump (19.1) are located casing (19.2) upper portion, gear (19.3) are located casing (19.2), gear (19.3) mesh mutually with slewing bearing's ring gear and drive gear pump (19.1) work, the upper portion of gear pump (19.1) is equipped with batch oil tank (19.4) rather than the import intercommunication, the working chamber and fuel feeding line (20) intercommunication of gear pump (19.1).
9. A tower crane for a building according to claim 1, wherein: preceding girder (12) keep away from the one end of tower crane main part mechanism (5) and the one end that tower crane main part mechanism (5) were kept away from to back girder (9) all are equipped with arm-tie (4) that are connected with tower crane main part mechanism (5) top.
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| CN115140662B (en) * | 2022-09-05 | 2022-11-11 | 大汉科技股份有限公司 | Tower crane with range debugging mechanism |
| CN115215237B (en) * | 2022-09-19 | 2023-03-07 | 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 |
| CN117550494B (en) * | 2024-01-10 | 2024-03-19 | 山西建设投资集团有限公司 | Super high-rise building material conveyer |
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| CN114380215A (en) | 2022-04-22 |
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