CN210976646U

CN210976646U - Hoisting device

Info

Publication number: CN210976646U
Application number: CN201920716356.3U
Authority: CN
Inventors: 曹晓程; 乔培华; 汤毅; 曹智云
Original assignee: Shanghai Installation Engineering Group Co Ltd
Current assignee: Shanghai Installation Engineering Group Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-07-10
Anticipated expiration: 2029-05-17

Abstract

In the hoisting device that this application provided, adopt detachable hoisting platform, not only can reuse, can not influence facade construction moreover. Furthermore, install the alarm on the hoisting platform, through the alarm can monitor the slope condition of hoisting platform realizes automatic alarm and restricts the lifting function of loop wheel machine, has strengthened the security in the construction operation greatly.

Description

Hoisting device

Technical Field

The utility model relates to a construction equipment field, in particular to hoist device.

Background

With the rapid development of urban construction in China and the increasing scarcity of available social land resources, high-rise buildings have special advantages in the aspect of relieving construction land due to strong comprehensive capacity, and are inevitable results of modern industrialization, commercialization and urbanization. At present, with the increasing of high-rise buildings, the increasing of process scale and the increasing of complex structures, the high-rise operation of the high-rise buildings is more, the vertical transportation amount is large, and the construction difficulty is increased continuously.

A large amount of high-altitude equipment and materials of a traditional high-rise building are hoisted to a specified hoisting port through a tower crane, are placed on a fixed platform and are then dragged into a floor. Generally, the building floor is higher, and the more that required hoist and mount are with fixed platform just sets up, so not only the consumptive material volume is big, and the platform can't remove in addition, often can influence the progress of outer facade curtain wall construction, has increased the time limit for a project and the degree of difficulty that each specialty was harmonious of construction. In addition, the platform is easy to incline due to the influence of external force in the hoisting operation, the levelness of the platform is usually adjusted by adopting a visual observation and manual command mode at present, and the method is simple to operate, but only suitable for construction operation with low layer height and small influence of external force. Once the layer height is too high, receive external influence factors such as wind-force, weather during the operation will greatly increased, and the precision of artificial observation will also reduce thereupon, is difficult to master to the whole condition of platform top goods more. Meanwhile, the ground commander is far away from the operators of the machines such as the platform and the tower crane, so that the problems of inconsistent coordination, command and communication obstacles and the like easily occur, and certain potential safety hazards exist. Moreover, traditional fixing device is owing to rarely have automatic alarm function, therefore can't in time discover the platform slope problem in the work progress, causes the eminence of goods and personnel to fall, is unfavorable for construction safety.

Therefore, how to solve the problems that the existing hoisting device is poor in safety and is not suitable for high-rise buildings becomes a technical problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hoisting device to solve the current hoisting device security poor, the unsuitable high-rise building's of current problem.

In order to solve the technical problem, the utility model provides a hoisting device, hoisting device includes: the system comprises a tower crane, a hoisting platform, a steel bar compression ring, an inclined steel wire rope and an alarm;

the tower crane is connected with the hoisting platform, the hoisting platform comprises a platform frame, a bottom plate and a three-surface fence, the bottom plate is laid on the platform frame, and the three-surface fence is vertically arranged at the edge of the platform frame and is fixedly connected with the platform frame;

the platform frame is composed of two main beams and a plurality of secondary beams, inclined pull rings are arranged on the outer sides of the two main beams, one end of each inclined pull wire rope is connected with the inclined pull rings, the other end of each inclined pull wire rope is connected with an upper frame beam of a building, the steel bar compression ring is embedded in a structural floor slab of the building, and one end of each main beam penetrates through the steel bar compression ring;

the alarm is installed in on the hoisting platform and with tower crane electric connection, the alarm is used for monitoring the gradient of hoisting platform, and cut off when the gradient of hoisting platform surpasses the extreme value the lifting function of tower crane.

Optionally, hoisting device in, all be provided with two rings and two hoist rings to one side on every girder, two rings are located to one side between two hoist rings, two acute angles that draw rings and horizontal plane to one side are 60, two hoist rings are all perpendicular with the horizontal plane, two draw rings and two hoist rings to one side all are fixed in through the full weld mode on the girder, just two draw rings and two hoist rings to one side all adopt the high strength bolt to fasten.

Optionally, in the hoisting device, the shape of the steel bar compression ring is omega-shaped, and both sides of the lower part of the omega-shaped ring have an overlap length of more than 30 cm.

Optionally, the hoisting device further comprises a balance beam, the hoisting platform is connected with the tower crane through the balance beam, a camera device is arranged on the balance beam, and the camera device is used for monitoring the cargo stacking condition on the hoisting platform.

Optionally, in the hoisting device, the alarm includes a detection box, a conductive solution, a plurality of conductive probes, a probe moving unit, and an alarm circuit;

the top of the conductive solution floats with a bubble, and the conductive solution and the bubble are both packaged in the detection box body; a first insulating sleeve is coated outside each conductive probe, the top end of each conductive probe is exposed outside the first insulating sleeve, the plurality of conductive probes are vertically arranged in the detection box body, and the top ends of the plurality of conductive probes are positioned in the bubbles; the probe moving unit is fixedly connected with the bottom ends of the plurality of conductive probes and is used for adjusting the positions of the conductive probes; one end of the alarm circuit is electrically connected with the conductive solution in the detection box body, the other end of the alarm circuit is electrically connected with the bottom ends of the plurality of conductive probes through wires, and the alarm circuit sends out an alarm signal when the top ends of the conductive probes are in contact with the conductive solution.

Optionally, in the hoisting device, the probe moving unit includes a range adjusting knob, a transmission component, a guide rail and a plurality of sliders;

the guide rail is fixedly arranged at the bottom of the detection box body, the sliding blocks are movably arranged in the guide rail, the range adjusting knob is arranged on the detection box body, and the positions of the sliding blocks on the guide rail are controlled by the transmission part;

the plurality of conductive probes comprise a central conductive probe and a plurality of edge conductive probes, the central conductive probe is fixedly arranged on the guide rail, and the edge conductive probes and the sliding blocks are in one-to-one correspondence and are respectively fixed on the corresponding sliding blocks.

Optionally, in the hoisting device, the alarm circuit includes: the automatic control device comprises a power supply, a detection indicator lamp, a first resistor, a first switch, a second switch, an alarm loudspeaker, an alarm indicator lamp and an automatic control module;

the power supply, the detection indicator lamp, the first resistor and the first switch are connected in series, the second switch and the alarm loudspeaker are connected between the edge conductive probe and the power supply in parallel, and the alarm indicator lamp is electrically connected between the center conductive probe and the power supply;

the automatic control module is electrically connected between the power supply and the alarm indicator lamp, and is electrically connected with the tower crane and used for cutting off the lifting function of the tower crane according to the alarm signal sent by the alarm circuit.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model adopts a detachable hoisting platform, and is connected with the hoisting platform through a diagonal steel wire rope and a steel bar compression ring, thereby transmitting the bearing to an upper frame beam and a structural floor slab of a building, thus not only ensuring that the hoisting platform is firm and safe in the using process, but also being easy to detach and realizing the repeated utilization;

2. the utility model discloses be provided with the slope condition of alarm in order to monitor hoisting platform, the acousto-optic early warning not only can be realized to the alarm, can restrict the lifting function of loop wheel machine when the gradient surpasses the limiting value moreover. Compared with the traditional hoisting process in which means such as visual observation and manual command are adopted, the hoisting device has higher reliability, can greatly reduce the probability of accidents caused by factors such as environment, personnel and construction methods, and is particularly suitable for hoisting and transporting various goods in high-rise buildings.

Drawings

Fig. 1 is a schematic structural view of a hoisting device according to an embodiment of the present invention;

fig. 2 is a side view of the lifting platform according to the embodiment of the present invention after installation;

fig. 3 is an axonometric view of the hoisting platform of the embodiment of the invention after installation;

fig. 4 is a schematic structural diagram of a platform frame according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an alarm device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of the alarm device according to the embodiment of the present invention in monitoring use.

Detailed Description

The hoisting device provided by the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Please refer to fig. 1 to fig. 4, which are schematic structural views of a hoisting device according to an embodiment of the present invention. As shown in fig. 1 to 4, the hoisting device comprises a tower crane 1, a hoisting platform 3, a steel bar compression ring 4, a diagonal steel wire rope 5 and an alarm 6;

the tower crane 1 is connected with the hoisting platform 3, and the hoisting platform 3 comprises a platform frame 31, a bottom plate 32 and a three-side fence 33; the bottom plate 32 is laid on the platform frame 31, and the three-sided fence 33 is vertically arranged on the edge of the platform frame 31 and is fixedly connected with the platform frame 31;

the platform frame 31 comprises two main beams 31a and a plurality of secondary beams 31b, oblique-pulling hanging rings 7 are arranged on the outer sides of the two main beams 31a, one end of each oblique-pulling steel wire rope 5 is connected with the oblique-pulling hanging rings 7, the other end of each oblique-pulling steel wire rope 5 is connected with an upper frame beam 11 of a building, the steel bar compression ring 4 is embedded in a structural floor slab 12 of the building, and one end of each main beam 31a penetrates through the steel bar compression ring 4;

alarm 6 install in on the hoisting platform 3 and with 1 electric connection of tower crane, alarm 6 is used for monitoring hoisting platform 3's gradient, and cut off when hoisting platform 3's gradient surpasses the limit the lifting function of tower crane 1.

Specifically, hoisting platform 3 is connected the below of tower crane 1, hoisting platform 3 with be provided with compensating beam 2 between the tower crane 1, hoisting platform 3 passes through compensating beam 2 with tower crane 1 is connected.

Referring to fig. 1, the tower crane 1 is connected to the equalizing beam 2 through a first crane wire rope (not shown in the figure), the first crane wire rope is used to connect the equalizing beam 2 to the tower crane 1, the equalizing beam 2 is connected to the hoisting platform 3 through a second crane wire rope (not shown in the figure), and the second crane wire rope is used to connect the hoisting platform 3 to the equalizing beam 2. When the hoisting operation is carried out, the first crane steel wire rope is hung on a lifting hook (marks are not shown in the figure) of the tower crane 1, the tower crane 1 is lifted by the first crane steel wire rope, the balance beam 2 is lifted by the balance beam 2, and the second crane steel wire rope is lifted by the hoisting platform 3.

The hoisting platform 3 comprises a platform frame 31, a bottom plate 32 and a three-sided fence 33. The bottom plate 32 is laid on the platform frame 31, and the three-sided fence 33 is vertically arranged on the edge of the platform frame 31 and is fixedly connected with the platform frame 31.

Referring to fig. 4, the platform frame 31 includes two main beams 31a and several secondary beams 31b, the main beams 31a are also called cantilever beams, and the secondary beams 31b are also called horizontal beams. In this embodiment, the main beam 31a and the secondary beam 31b are made of channel steel, the channel steel specification of the main beam 31a is 20# b, and the channel steel specification of the secondary beam 31b is 16# b.

In this embodiment, the two main beams 31a are arranged in parallel and have the same length, the plurality of secondary beams 31b are arranged in parallel and have the same length, and the plurality of secondary beams 31b are arranged perpendicular to and fixedly connected with the two main beams 31 a. As shown in fig. 4, the overall shape of the platform frame 31 is a rectangle, and the two main beams 31a and the secondary beam 31b connected between the end points of the two main beams 31a form three sides of the rectangle.

The bottom plate 32 is laid on the platform frame 31, and the shape and the size of the bottom plate 32 are adapted to the shape and the size of the platform frame 31. In this embodiment, the bottom plate 32 is a rectangular bottom plate. Preferably, the bottom plate 32 is made of an anti-slip steel plate, and the thickness of the anti-slip steel plate is required to be more than 10 mm.

In another embodiment, the two main beams 31a may also be arranged in an axisymmetric manner, rather than in a parallel manner, the plurality of sub-beams 31b are all fixedly connected to the two main beams 31a, but are not perpendicular to the two main beams 31a, the two main beams 31a and the sub-beams 31b connected between the end points of the two main beams 31a form three sides of a trapezoid, and the overall shape of the platform frame 31 is a trapezoid. Correspondingly, the base plate 32 is a trapezoidal base plate.

In other embodiments, the secondary beam 31b connected between the end points of the two main beams 31a may also be an arc structure, rather than a straight structure, and the overall shape of the platform frame 31 may be a fan shape or a combination of a rectangular shape and a semicircular shape. Accordingly, the bottom plate 32 is a fan-shaped bottom plate or a combination of a rectangular bottom plate and a semicircular bottom plate.

Preferably, the overhanging length of the main beam 31a is less than or equal to 5m, the length of the secondary beam 31b is less than or equal to 3m, and the distance between adjacent secondary beams 31b is less than or equal to 0.8 m. In this embodiment, the length of the main beam 31a is 5.5m, the overhanging length of the main beam 31a is 4.8m, the length of the secondary beam 31b is 3m, and the distance between adjacent secondary beams 31b is 0.8 m.

Preferably, the upper end surfaces of the plurality of secondary beams 31b are located on the same plane. Since the upper end surfaces of the plurality of sub-beams 31b are the base on which the bottom plate 32 is laid and are in direct contact with the bottom plate 32, the upper end surfaces of the plurality of sub-beams 31b are located on the same plane, which means that the contact surface of the bottom plate 32 is flat, which facilitates the laying of the bottom plate 32.

Preferably, the plurality of secondary beams 31b are arranged at equal intervals. Since the several sub-beams 31b are the supporting structure of the bottom plate 32, the several sub-beams 31b are arranged at equal intervals, which means that the arrangement of the supporting structure is uniform, so that the load bearing of each position of the bottom plate 32 is kept consistent.

Preferably, the bottom plate 32 is fixedly connected to the platform frame 31 by spot welding. In this manner, the base plate 32 does not move during use to interfere with the loading and unloading of cargo.

Referring to fig. 3, the three-sided fence 33 includes a plurality of cross bars 33a and a plurality of vertical bars 33b, the plurality of vertical bars 33b are vertically disposed at an edge of the platform frame 31 and are fixedly connected to the platform frame 31 by welding, the cross bars 33a are perpendicular to the vertical bars 33b and are fixedly connected to the vertical bars 33b by overlapping, the plurality of cross bars 33a and the plurality of vertical bars 33b enclose a protection frame, and the protection frame includes side guard rails disposed opposite to each other and a front guard rail connecting two side guard rails. Wherein, two side rail guards are fixed, and positive rail guard adopts push-pull type door structure, can open or close. Thus, goods can smoothly enter and exit from the front protective fence.

Preferably, the plurality of cross rods 33a and the plurality of upright rods 33b are made of steel pipes, the model number of the steel pipes is phi 48 × 3.0.0, and the wall thickness of the steel pipes is more than 2.8 mm.

Preferably, the height of the three-sided fence 33, that is, the length of the upright 33b is 1.2m or more, the distance between the adjacent uprights 33b is 2m or less, and the distance between the adjacent crossbars 33a is 0.6m or less.

Hoisting platform 3 still includes steel wire safety net 34, steel wire safety net 34 set up in trilateral rail 33's inboard, and with trilateral rail 33 fixed connection. The steel wire safety net 34 is provided with a load limiting signboard in a hanging manner, and the load limiting signboard is used for marking the bearing limit of the hoisting platform 3.

Hoisting platform 3 still includes a foot board 35, foot board 35 set up in the downside of trilateral rail 33, with trilateral rail 33 or platform frame 31 fixed connection for prevent the landing of little article. Preferably, the height of the foot blocking plate 35 is 180mm, and the foot blocking plate 35 is made of a steel plate.

In this embodiment, the weight of the platform frame 31 is 697kg, the weight of the bottom plate 32 is 1250kg, the weight of the three-sided fence 33 is 220kg, and the overall weight of the hoisting platform 3 is about 2300 kg.

In this embodiment, the maximum allowable load of the hoisting platform 3 is 5000N per square meter, and the load bearing limit of the hoisting platform 3 is 3t, that is, the weight of the goods hoisted by the hoisting platform 3 each time must not exceed 3 t.

Referring to fig. 3, the number of the two steel bar compression rings 4 is two, the two steel bar compression rings 4 are embedded in the structural floor slab 12 at the hoisting opening as main beam anchoring rings, and the steel bar compression rings 4 are located at the channel steel anchoring sections of the structural floor slab 12 and are pressed by the bottom ribs of the structural floor slab 12.

In this embodiment, the steel bar compression ring 4 is in an omega shape, and both sides of the lower part of the omega shape have an overlap length of more than 30 cm. Preferably, the specification of the steel bar compression ring 4 is as follows

Namely, the diameter of the steel bar compression ring 4 is 20 mm.

With continued reference to fig. 3 and 4, the front ends of the two main beams 31a (i.e. the ends that are not fixedly connected to the secondary beams 31 b) both extend out of the bottom plate 32 and are respectively inserted into the corresponding steel bar compression rings 4, so that the front ends of the two main beams 31a are both connected to the structural floor 12 through the embedded steel bar compression rings 4, and the rear ends of the two main beams 31a (i.e. the ends that are fixedly connected to the secondary beams 31 b) are both cantilevered outside the structural floor 12.

The downside of two girders 31a (i.e. dorsad one side of trilateral rail 33) all is provided with a limit baffle 36, limit baffle 36 with girder 31a sets up perpendicularly and fixed connection, limit baffle 36 is close to the front end of girder 31a is used for the restriction girder 31a inserts the length of reinforcing bar clamping ring 4.

The outer sides of the two main beams 31a are provided with at least one inclined-pulling hanging ring 7, and the inclined-pulling hanging rings 7 are fixedly connected with the main beams 31a and used for tying the inclined-pulling steel wire ropes 5 with the upper-layer frame beam 11. In this embodiment, each main beam 31a is provided with two inclined-pulling hanging rings 7, and each inclined-pulling hanging ring 7 is connected with one inclined-pulling steel wire rope 5. Preferably, the inclined-pulling hanging rings 7 on the two main beams 31a are symmetrically arranged, and the acute angles between the two inclined-pulling hanging rings 7 and the horizontal plane are both 60 degrees.

The outer sides of the two main beams 31a are provided with at least one hoisting ring 8, and the hoisting rings 8 are fixedly connected with the main beams 31a and used for tying the second crane steel wire rope with the balance beam 2. In this embodiment, all be provided with two hoist and mount rings 8 on every girder 31a, two hoist and mount rings 8 set up respectively in two outsides that draw rings 7 to one side, and two draw rings 7 to one side all set up between two hoist and mount rings 8 promptly, two hoist and mount rings 8 all are perpendicular with the horizontal plane.

In this embodiment, the oblique-pulling hoisting ring 7 and the hoisting ring 8 are all fully welded to the main beam 31a, and the oblique-pulling hoisting ring 7 and the hoisting ring 8 are all fastened by the high-strength bolt 10. Preferably, the high-strength bolt 10 has a specification of

I.e. the high strength bolt 10 has a diameter of 20 mm.

Referring to fig. 3, the number of the diagonal steel wire ropes 5 is four, each diagonal steel wire rope 5 is connected to a diagonal hoisting ring 7, a steel wire rope clamp 9 is disposed at the end of each diagonal steel wire rope 5, and the steel wire rope clamp 9 is used for clamping and fixing the steel wire rope. Preferably, the number of rope clamps 9 used per rope is above 3.

In this embodiment, the total breaking load of the cable-stayed steel wire rope 5 and the crane steel wire rope (including the first crane steel wire rope and the second crane steel wire rope) is greater than 15t, the specifications of the cable-stayed steel wire rope 5 and the crane steel wire rope are 6 × 19+1 mm in diameter 23mm, that is, the cable-stayed steel wire rope 5 and the crane steel wire rope have 6 steel strands, each steel strand has 19 steel wires, the toughness of the steel wire rope is 1 grade, and the diameter of the steel wire rope is 23 mm.

Referring to fig. 1, a camera device 21 is disposed in the middle of the balance beam 2, and the camera device 21 is fixed on the balance beam 2 and used for observing the stacking condition of the goods on the hoisting platform 3 in real time.

Referring to fig. 1 and fig. 3 in combination, the alarm 6 is mounted on a bottom plate 32 of the hoisting platform 3 and used for monitoring the inclination of the hoisting platform 3, the alarm 6 is further electrically connected with the tower crane 1, and when the inclination of the hoisting platform 3 exceeds a limit, the lifting function of the tower crane 1 is cut off through the alarm 6.

Please refer to fig. 5, which is a schematic structural diagram of an alarm device according to an embodiment of the present invention. As shown in fig. 5, the alarm 6 includes: the device comprises a detection box body 61, a conductive solution 62, a plurality of conductive probes 64, a probe moving unit and an alarm circuit; a bubble 63 floats on the top of the conductive solution 62, and the conductive solution 62 and the bubble 63 are both packaged in the detection box body 61; a first insulating sleeve 65 is coated outside each conductive probe 64, the top end of each conductive probe 64 is exposed outside the first insulating sleeve 65, the plurality of conductive probes 64 are vertically arranged in the detection box body 61, and the top ends of the plurality of conductive probes 64 are located in the bubbles 63; the probe moving unit is fixedly connected with the bottom ends of the conductive probes 64 and is used for adjusting the positions of the conductive probes 64; one end of the alarm circuit is electrically connected with the conductive solution 62 in the detection box body 61, the other end of the alarm circuit is electrically connected with the bottom ends of the plurality of conductive probes 64 through a wire, and the alarm circuit sends out an alarm signal when the top ends of the conductive probes 64 are contacted with the conductive solution 62.

The conductive solution 62 is a sodium chloride solution or an aqueous solution of other soluble acid, base and salt. Preferably, the conductive solution 62 is a sodium chloride solution with a concentration of 23% and is non-toxic and has good conductivity, and the conductive solution 62 is easily available and low in cost.

The conductive probes 64 are vertically arranged in the detection box body 61, the top ends of the conductive probes 64 face upward and are close to the top surface of the detection box body 61, the bottom ends of the conductive probes 64 face downward and are close to the bottom surface of the detection box body 61, a first insulating sleeve 65 is arranged outside the conductive probes 64, the first insulating sleeve 65 is exposed at the top ends of the conductive probes 64, and all parts except the top ends are covered by the first insulating sleeve 65.

In this embodiment, the conductive probes 64 include a central conductive probe and four edge conductive probes, the central conductive probe is located at the intersection of the cross structure, the four edge conductive probes are respectively located at four end points of the cross structure, namely, the central conductive probe is located around, and the conductive probes are arranged in a square at equal intervals.

The probe moving unit includes a guide rail 66, a plurality of sliders 67, a transmission member (not shown in the drawings) and a range adjustment knob 69, the guide rail 66 is fixedly installed at the bottom of the detection box body 61, the plurality of sliding blocks 67 are movably arranged in the guide rail 66 and can freely move along the guide rail 66, the central conductive probe is fixedly installed on the guide rail 66, the plurality of edge conductive probes are in one-to-one correspondence with the plurality of sliding blocks 67 and are respectively fixed on the corresponding sliding blocks 67, the range adjusting knob 69 is arranged on the detection box body 61, and the plurality of sliding blocks 67 are driven by the transmission component to move on the guide rail 66, so that the conductive probes 64 on the plurality of sliding blocks 67 simultaneously approach or simultaneously get away from the central conductive probe, that is, the edge conductive probe can be moved by turning the range adjustment knob 69, so as to adjust the distance between the edge conductive probe and the center conductive probe. Preferably, the guide rail 66 and the plurality of sliders 67 are made of corrosion-resistant and insulating materials.

When the detection box body 61 is in a horizontal state, the air bubble 63 is located at the central position, the top ends of the conductive probes 64 are all located in the air bubble 63 to realize insulation, and the lower ends of the conductive probes 64 are immersed in the conductive solution but are not conducted due to the protection of the first insulating sleeve 65. When the detection box 61 is tilted to a certain degree, the bubble 63 is deviated from the center position, so that the tip of the partially conductive probe 64 is not in the bubble 63 and is in contact with the conductive solution 62, and thus is conducted.

With continued reference to fig. 5, the bottom ends of the center conductive probe and the four edge conductive probes are electrically connected to the alarm circuit through corresponding wires 68. The four edge conductive probes are electrically connected to a common terminal through corresponding wires 68, and the center conductive probe is electrically connected to the other terminal through corresponding wires 68. One end of a lead 68 electrically connected with the edge conductive probe is connected with the conductive probe 64 in the first insulating sleeve 65, and the other end of the lead passes through the sliding block 67, the guide rail 66 and the bottom surface of the detection box body 61 in sequence. One end of a lead 68 electrically connected with the central conductive probe is connected with the conductive probe 64 in the first insulating sleeve 65, and the other end of the lead passes through the guide rail 66 and the bottom surface of the detection box body 61 in sequence.

The range adjusting knob 69 is adjusted back and forth, so that the edge conductive probes can be close to or far away from the center conductive probe at the same time, and the scales corresponding to the range adjusting knob 69 represent the inclination degree of the detection object. In this embodiment, the measuring range of the alarm 6 is 5 ° to 30 °, i.e. the measured plane slope is at most 30 ° and at least 5 °.

The tower crane lifting alarm device comprises a detection box body 61, a power supply 70, a detection indicator lamp 71, a first switch K1, a second switch K2, an alarm loudspeaker 72, a first resistor R1, an alarm indicator lamp 73 and an automatic control module 74, wherein the detection indicator lamp 71, the first switch K1 and the first resistor R1 are connected in series, the second switch K2, the alarm loudspeaker 72 and the alarm indicator lamp 73 are connected in parallel between the power supply 70 and the conductive probe 64, the alarm indicator lamp 73 is electrically connected between the bottom end of the central conductive probe and the power supply 70, the second switch K2 and the alarm loudspeaker 72 are electrically connected between the bottom end of the edge conductive probe and the power supply 70, the power supply 70 is used for providing power supply energy, the alarm loudspeaker 72 is a buzzer, the alarm indicator lamp 73 is a L lamp, the automatic control module K2 is electrically connected between the bottom end of the edge conductive probe and the power supply 70, and the automatic control module 74 is connected with the alarm indicator lamp 74 and the alarm module 70 to cut off an alarm signal ED 1 according to the tower crane lifting alarm module 1.

When the tip of the edge conduction probe is in contact with the conductive solution 62, if the first switch K1 and the second switch K2 are closed, the power supply 70, the detection indicator lamp 71, the first switch K1, the second switch K2, and the first resistor R1 form an electrical loop, and thus the detection indicator lamp 71 is turned on.

When the top end of the edge conductive probe is contacted with the conductive solution 62, if the first switch K1 is closed and the second switch K2 is opened, the power supply 70, the detection indicator lamp 71, the first switch K1, the alarm speaker 72 and the first resistor R1 form an electrified loop, so that the alarm speaker 72 emits an alarm sound while the detection indicator lamp 71 is turned on.

When the top ends of the central conductive probe and the edge conductive probe are simultaneously contacted with the conductive solution 62, if the first switch K1 is closed and the second switch K2 is opened, the power supply 70, the detection indicator lamp 71, the first switch K1, the first resistor R1 and the alarm loudspeaker 72 form an electrifying loop, and meanwhile, the power supply 70, the detection indicator lamp 71, the first switch K1, the first resistor R1, the alarm indicator lamp 73 and the automatic control module 74 also form an electrifying loop, so that when the detection indicator lamp 71 is lightened and the alarm loudspeaker 72 sends out alarm sound, the alarm indicator lamp 73 is lightened, and the automatic control module 74 cuts off the lifting function of the tower crane 1.

In order to avoid the conductive solution 62 from freezing in cold winter and affecting the normal operation of the conductive solution, the alarm circuit further includes a heating wire 75 disposed in the conductive solution 62 and covered by a second insulating sleeve, and the heating wire 75, a second resistor R2, a power supply 70 and a third switch K3 connected in series form a heating circuit. The heating circuit is typically operated at extreme temperatures below-20 ℃ in winter, and temperatures below-20 ℃ are typically considered to be the temperature at which a 23% strength sodium chloride solution begins to solidify. When the alarm 6 is in an extreme cold condition (lower than 20 ℃ below zero) in winter, the third switch K3 is closed, the heating circuit is conducted, and the conductive solution 62 is heated through the heating wire 75, so that the conductive solution 62 is ensured not to be frozen in the extreme cold condition in winter.

In this embodiment, the power source 70 selects a 24V dc power source, the first resistor R1 and the second resistor R2 select 1k Ω resistors, and the heating wire 75 selects a 0Cr27Al7Mo2 type dc heating wire with a power of 36W. The heating wire 75 is capable of heating the entire conductive solution 62 to a liquid state within 3 minutes at-20 ℃.

The alarm 6 further comprises a detection tool body 76 and a plurality of fixing belts 77, a groove is formed in the top of the detection tool body 76, and the detection box body 61 is fixedly arranged in the groove of the detection tool body 76. The fixing belts 77 are disposed on the detecting tool body 76 for fixing the hoisting platform 3. When the hoisting platform 3 is a pipeline or a trunking, the fixing band 77 can be used for binding and fixing the alarm 6 on the pipeline or trunking.

In this embodiment, alarm 6 adopts the portable conductive probe of adoption to realize the continuous measurement of different slopes, portable conductive probe combines with warning circuit to realize the monitoring of diversified horizontal tilt state, when the inclination of detection object surpassed preset scope, can automatic alarm and restriction lifting device's promotion.

Correspondingly, the utility model also provides a hoist device's application method. With continued reference to fig. 1 to 4, the method of using the lifting device includes the following steps:

step one, providing the hoisting device 100;

secondly, installing a hoisting platform 3, monitoring the inclination of the hoisting platform 3 by using an alarm 6 in the installation process, sending an early warning signal by the alarm 6 when the inclination exceeds an early warning value, and cutting off the lifting function of the tower crane 1 by the alarm 6 when the inclination exceeds a limit value;

thirdly, cargo loading and unloading operation is carried out by utilizing the hoisting platform 3, the inclination of the hoisting platform 3 is monitored by utilizing the alarm 6 in the operation process, and the alarm 6 sends an alarm signal when the inclination exceeds a set value;

and step four, when the hoisting platform 3 needs to be removed, disassembling the hoisting platform 3.

Specifically, the hoisting device 100 comprises a hoisting platform 3, and the manufacturing process of the hoisting platform 3 comprises: firstly, two main beams 31a and a plurality of secondary beams 31b are made of channel steel, and the two main beams 31a and the plurality of secondary beams 31b are welded and fixed to form a platform frame 31; then, a base support (reference number is not shown in the figure) and a limit baffle 36 are respectively fixedly arranged on the lower end surfaces of the two main beams 31a in a welding mode; then, two hoisting rings 8 and two oblique-pulling rings 7 are respectively and fixedly installed on the outer side of each main beam 31a, the two hoisting rings 8 are perpendicular to the length direction of the main beam 31a, the two oblique-pulling rings 7 form an angle of 60 degrees with the length direction of the main beam 31a, the two hoisting rings 8 and the two oblique-pulling rings 7 are fully welded on the main beam 31a, and the two hoisting rings 8 and the two oblique-pulling rings 7 are adopted

The high-strength bolt 10 of (4) is fastened; then, a three-sided fence 33 is fixedly installed at the edge of the platform frame 31, the three-sided fence 33 includes a plurality of cross bars 33a and a plurality of upright bars 33b, the upright bars 33b are all fixedly connected with the main beam 31a by welding, and the cross bars 33a are fixedly connected with the upright bars 33b by lapping; after the three-sided fence 33 is installed, a steel wire safety net is arranged on the inner side of the three-sided fence 33, and a foot baffle plate with the height of 180mm is arranged on the lower side of the three-sided fence 33.

In this embodiment, in order to increase the anticorrosive rust-resistant function of hoisting platform 3, metals such as platform frame 31 and bottom sprag of hoisting platform 3 all are coated with anti-rust paint.

After the hoisting platform 3 is manufactured, the welding seam quality inspection and acceptance of the hoisting rings (including the hoisting rings 8 and the oblique-pulling rings 7) is required, and after the welding seam quality inspection and acceptance is qualified, the bearing test is carried out on the hoisting rings (including the hoisting rings 8 and the oblique-pulling rings 7), and whether the welding seam at the hoisting point is deformed or not is checked. The bearing test to rings includes: firstly, loading a 5t load on the hoisting platform 3; then, a steel wire rope is used for connecting the hoisting ring; then, hoisting the hoisting platform 3 by a tower crane 1 and lifting the hoisting platform 10cm away from the ground; and then checking whether the welding seam at the lifting point is deformed or not.

And after the bearing test of the hoisting ring is completed, carrying out the bearing test of the steel wire ropes, wherein the steel wire ropes comprise a cable-stayed steel wire rope 5 and a crane steel wire rope. The load test for steel wire ropes comprises: firstly, loading a load of more than 10t on the hoisting platform 3; then, connecting the tower crane 1 and the hoisting platform 3 by using a diagonal steel wire rope 5 or a crane steel wire rope; and then, hoisting the hoisting platform 3 by using the tower crane 1 and lifting off the ground, wherein the stability time after hoisting is not less than 4 h.

Before carrying out a steel wire rope bearing test, whether the steel wire rope is worn, knotted or twisted needs to be checked, whether the steel wire rope meets the design standard, whether the clamping method of the steel wire rope clamp 9 is correct (namely, the main steel rope is kept straight), whether the saddle of the steel wire rope clamp 9 is at the long rope end, and the like.

Preferably, the maintenance period of the hoisting device 100 is generally 6 months/time; if the period of the maintenance is more than 3 years, the maintenance period is shortened to 3 months/time; if the maintenance period is shortened to 2 months/time after the hoisting device 100 is put into use for more than 5 years, the maximum service life of the hoisting device is generally 8 years, the maintenance contents are the overall structure of the inspection platform, the hoisting ring and the bolt connection reinforcing member, the abrasion of the steel wire rope and the falling degree of the paint, and the parts and the anticorrosive paint of the hoisting device should be replaced as required according to specific conditions. In addition, before use, after each repair and maintenance, the hoisting device 100 should perform a load test of the hoisting ring and the steel wire rope.

After the various inspections are completed, the lifting platform 3 is removably mounted on the facade of the building. The installation process of the hoisting platform 3 comprises the following steps: firstly, the hoisting platform 3 is connected with a tower crane 1 through a crane steel wire rope; then, the tower crane 1 carries out tower crane operation, and lifts the lifting platform 3 to a specified lifting opening; then, the front end of the main beam 31a is accurately inserted into the embedded steel bar compression ring 4, the insertion is stopped when the limit baffle 36 on the main beam 31a contacts with the structural floor 12, and the main beam 31a is wedged tightly by a wood wedge (not shown in the figure) in time to ensure the positioning of the platform; at the moment, the cantilever beam arches 0.5% -1% according to the length of the beam; then, adjusting a crane steel wire rope for tower crane operation to enable the crane steel wire rope to be in a tight state; then, installing a diagonal steel wire rope 5, wherein one end of the diagonal steel wire rope 5 is fixedly connected with a diagonal hoisting ring 7, the other end of the diagonal steel wire rope 5 is fixedly connected with a structural steel beam (namely an upper-layer frame beam 11) of a building or a steel bar compression ring pre-embedded on the upper floor, and a soft pad is added at the lap joint of the diagonal steel wire rope 5 and the structural steel beam; and finally, releasing the crane steel wire rope.

In the installation process, the inclination of the hoisting platform 3 is monitored through an alarm 6. The detection object of the alarm 6 is the hoisting platform 3, and the alarm 6 is tightly attached to the test surface of the hoisting platform 3.

When the inclination of the hoisting platform 3 needs to be warned, the warning value (for example, 15 °) of the inclination degree of the hoisting platform 3 is set by turning the range adjusting knob 69. At the same time, the first switch K1 is closed and the second switch K2 is opened.

Referring to fig. 1 and 6 in combination, as shown in fig. 1 and 6, when the hoisting platform 3 is in a horizontal state, the exposed top ends of the plurality of conductive probes 64 are all exposed in the bubbles 63, the lower ends of the plurality of conductive probes 64 are immersed in the conductive solution 62, but the immersed portions are protected by the first insulating sleeve 65, so that the electrical circuit cannot realize a path, the alarm circuit does not operate, when the hoisting platform 3 is inclined due to an external force, the position of the bubbles 63 shifts, and when the inclination of the hoisting platform 3 reaches an early warning value (for example, 15 °), the exposed ends of the conductive probes 64 are immersed in the conductive solution 62, the alarm circuit is turned on to trigger an audible and visual alarm signal (the detection indicator lamp 71 lights up, and the alarm speaker 72 emits an early warning sound), thereby prompting an operator of the inclination condition of the hoisting platform 3. At this moment, the operating personnel of the tower crane 1 should combine the camera device 21 on the compensating beam 2 to check whether the hoisted goods have the inclination and the rollover condition, and make adjustment in time.

When the inclination of the hoisting platform 3 is further increased, and an alarm needs to be given to the inclination of the hoisting platform 3 and the self-control function of the tower crane 1 needs to be triggered, the limit value (for example, 30 °) of the inclination of the hoisting platform 3 is set by turning the range adjusting knob 69. At the same time, the first switch K1 is closed and the second switch K2 is opened.

When the inclination degree of the hoisting platform 3 exceeds the limit value, not only the conductive probe 64 at the edge position is in contact with the conductive solution 62, but also the conductive probe 64 at the central position is in contact with the conductive solution 62, so that the alarm circuit performs acousto-optic early warning, the alarm indicator lamp 73 is lightened, the automatic control module 74 cuts off the lifting function of the tower crane 1, and the tower crane 1 can only execute a descending instruction. At this moment, the operator of the tower crane 1 should stop the hoisting work immediately, combine the camera device 21 and the instruction of the ground commander, in time will the hoisting platform 3 descends to the ground or stops and is fixed in the hoisting port position nearby, and hoist after the external condition improves.

After hoisting platform 3 hoists and takes one's place, the operating personnel of tower crane 1 should cut off the automatic control function of alarm 6, this moment alarm 6 will not be right the lifting function of tower crane 1 restricts. At the same time, the first switch K1 and the second switch K2 are closed, and a set value (for example, 10 °) of the inclination degree of the hoisting platform 3 is set by the distance adjusting knob 69, that is, the alarm is given when the inclination degree of the hoisting platform 3 exceeds 10 °.

In the process of loading and unloading goods by using the hoisting platform 3, if the detection indicator lamp 71 is turned on, the inclination degree of the hoisting platform 3 is over a set value, the operator is prompted to withdraw immediately, and construction is performed after potential safety hazards are eliminated.

And when needed, the hoisting platform 3 is shifted or dismantled. The dismounting process of the hoisting platform 3 comprises the following steps: firstly, removing all the sundries which may fall from the hoisting platform 3; then, connecting the tower crane 1 and the hoisting platform 3 through a crane steel wire rope, and enabling the crane steel wire rope to be in a tight state; then, the stayed cable 5 is released; then, the wooden wedge is removed, and the main beam 31a is drawn out from the steel bar compression ring 4; and then, hoisting the hoisting platform 3 away from the hoisting port through the tower crane 1.

In this embodiment, the hoisting platform 3 is arranged outside the wall of the high-rise building in an overhanging manner, and supports the heavy object on the platform through the main beam 31a, the secondary beam 31b and the bottom plate 32 which are arranged at the bottom of the platform. The hoisting platform 3 is connected with an oblique steel wire rope 5 and a steel bar compression ring 4, and the bearing is transmitted to a building by utilizing the oblique steel wire rope 5 and the steel bar compression ring. Therefore, the hoisting platform 3 can be firmly and safely used, is easy to disassemble and can be repeatedly used. By adopting the hoisting device 100, the hoisting can be realized under the condition that the curtain wall is closed and only hoisting windows are left, and the construction of the outer vertical surface is not influenced.

Further, be provided with alarm 6 on the hoisting platform 3, alarm signal through alarm 6 can judge directly perceivedly hoisting platform 3 is in the hoist and mount in-process and the slope condition after the fixed. In the hoisting process, once the inclination of the hoisting platform 3 reaches a limit value, the alarm can realize acousto-optic early warning and limit the lifting function of the crane, and the crane can only execute a descending instruction. In addition, the balance beam 2 is provided with a camera device 21, so that the goods placing condition can be monitored in real time. Alarm 6 and camera device 21 cooperation are used, and the slope condition of real-time supervision platform reminds operating personnel hoist and mount platform 3 is in time right because the part connection drops or goods produce the slope that rocks and lead to in handling hoist and mount platform 3 adjusts, overhauls. Compared with the traditional hoisting process in which means such as visual observation and manual command are adopted, the hoisting device 100 has higher reliability, the probability of accidents caused by factors such as environment, personnel and construction methods can be greatly reduced, and the hoisting device 100 is particularly suitable for hoisting and transporting various goods in high-rise buildings.

To sum up, the utility model provides an among the hoist device, adopt detachable hoisting platform, not only can reuse, can not influence the outer facade construction moreover. Furthermore, install the alarm on the hoisting platform, through the alarm can monitor the slope condition of hoisting platform realizes automatic alarm and restricts the lifting function of loop wheel machine, has strengthened the security in the construction operation greatly.

The foregoing is a more detailed description of the present application in connection with specific preferred embodiments and it is not intended that the present application be limited to these specific details. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. A lifting device, comprising: the system comprises a tower crane, a hoisting platform, a steel bar compression ring, an inclined steel wire rope and an alarm;

2. The hoisting device according to claim 1, wherein each main beam is provided with two diagonal-pulling hoisting rings and two hoisting rings, the two diagonal-pulling hoisting rings are located between the two hoisting rings, acute angles between the two diagonal-pulling hoisting rings and a horizontal plane are both 60 degrees, the two hoisting rings are both perpendicular to the horizontal plane, the two diagonal-pulling hoisting rings and the two hoisting rings are both fixed on the main beam through full welding, and the two diagonal-pulling hoisting rings and the two hoisting rings are both fastened by high-strength bolts.

3. The hoisting device according to claim 1, wherein the shape of the steel bar press ring is omega-shaped, and both sides of the lower part of the omega-shape have an overlap length of more than 30 cm.

4. The hoisting device of claim 1, further comprising a balance beam, wherein the hoisting platform is connected with the tower crane through the balance beam, and a camera device is arranged on the balance beam and used for monitoring the cargo stacking condition on the hoisting platform.

5. The hoisting device according to claim 1, wherein the alarm comprises a detection box body, a conductive solution, a plurality of conductive probes, a probe moving unit and an alarm circuit;

6. The hoisting device of claim 5, wherein the probe moving unit comprises a range adjusting knob, a transmission part, a guide rail and a plurality of sliders;

7. The lifting device of claim 6, wherein the alarm circuit comprises: the automatic control device comprises a power supply, a detection indicator lamp, a first resistor, a first switch, a second switch, an alarm loudspeaker, an alarm indicator lamp and an automatic control module;