Lifting device for building construction and using method thereof

Abstract

The invention discloses a hoisting device for building construction and a using method thereof, and relates to the field of building construction hoisting, the hoisting device comprises a hoisting frame, two hoisting wheels are arranged at the bottom of the hoisting frame in the length direction of the hoisting frame, and one side of each hoisting wheel is connected with a first guide piece used for limiting movement of the hoisting wheel in the length direction of the hoisting frame; the other side of the lifting wheel is connected with a driving mechanism A for driving the lifting wheel to move; two winding rollers are symmetrically arranged at the bottom of the middle section of the lifting frame; according to the hoisting device for building construction and the using method thereof, the length of a steel wire rope is adjusted by controlling rotation of a winding roller, and a driving mechanism A can be controlled to drive a hoisting wheel to be adjusted in the length direction of a hoisting frame, so that the included angle between the steel wire rope and a prefabricated part during hoisting is adjusted; the device can be suitable for the prefabricated part with the large distance between two anchor points, and the situation that due to the fact that supporting points are too concentrated in the hoisting process of a steel wire rope, loads on a hoisting frame are too concentrated, and the hoisting frame is prone to being damaged is reduced.

Description

Technical Field

[0001] The invention relates to a lifting technology for building construction, and in particular to a lifting device for building construction and a use method thereof. Background Art

[0002] In modern construction, lifting devices are indispensable and important equipment, which are used to transport various building materials and components vertically or horizontally on construction sites. These devices must be efficient, safe and reliable to cope with complex and changing engineering requirements. Lifting devices usually include cranes, electric hoists, hanging baskets and other special machinery, such as tower cranes and construction elevators.

[0003] During construction, it is often necessary to lift the prefabricated parts of a building. When lifting the prefabricated parts, they are usually lifted through the reserved anchor points on the prefabricated parts, and the anchor points and the hooks of the crane are connected manually with steel wire ropes. The anchor points of different prefabricated parts are in different positions, and the steel wire ropes need to be manually adjusted before lifting to adapt to the anchor point positions of the prefabricated parts, resulting in low lifting efficiency. In addition, when installing the prefabricated parts, embedded parts need to be installed in advance to connect and fix the prefabricated parts to the embedded parts. When the prefabricated parts are lifted to the installation position, the bottom inclination angle of the prefabricated parts needs to be adjusted to align with the embedded parts for installation, such as stair prefabricated parts. This results in low efficiency and inconvenience during installation, which is difficult to achieve with existing lifting devices. Summary of the invention

[0004] The object of the present invention is to provide a lifting device for construction and a method of using the same, so as to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: A lifting device for construction, comprising a lifting frame, two lifting wheels are arranged at the bottom of the lifting frame and along its length direction, one side of the lifting wheel is connected to a first guide member for limiting its movement along the length direction of the lifting frame, and the other side of the lifting wheel is connected to a driving mechanism A for driving its movement;

[0006] Two winding rollers are symmetrically arranged at the bottom of the middle section of the lifting frame. The outside of the rotating shaft of the winding roller is rotatably connected to the lifting frame. A steel wire rope is wound around the outside of the winding roller. One end of the steel wire rope is fixedly connected to the winding roller, and the other end of the steel wire rope is passed around the adjacent lifting wheel.

[0007] One side of the winding roller is connected to a B driving mechanism for driving the winding roller to rotate around its own axis, and the other side of the winding roller is connected to a limiting mechanism for preventing the winding roller from rotating around its own axis.

[0008] Furthermore, the first guide member includes a moving frame, a plurality of rollers are symmetrically rotatably mounted on the inner side of the upper end of the moving frame, one side of the rollers is rollingly connected to the lifting frame, and the bottom end of the moving frame is rotationally connected to the rotating shaft of the lifting wheel.

[0009] Furthermore, the A driving mechanism includes a screw rod, the outside of which is threadedly connected to the moving frame, one end of the screw rod is rotationally connected to the lifting frame, and the other end of the screw rod is connected to an A rotating driving member that drives it to rotate around its own axis.

[0010] Furthermore, the B drive mechanism includes an A gear, which is meshed with B gears on both sides of the A gear, the inner side of the B gear is fixedly connected to the rotating shaft of the adjacent winding roller, the inner side of the A gear is fixedly connected to a transmission shaft, the outer side of the transmission shaft is rotatably connected to the lifting frame, and one end of the transmission shaft is connected to the B rotating drive member that drives it to rotate around its own axis.

[0011] Furthermore, the limiting mechanism includes a trigger mechanism and two groups of limiting components, the two groups of limiting components are respectively arranged at the ends of the rotating shafts of the two winding rollers, the limiting components include a friction disk, the inner side of the friction disk is fixedly connected to the rotating shaft of the adjacent winding roller, friction blocks are arranged on both sides of the friction disk, one side of the friction block is connected to a driving component for driving it to move toward one side of the friction disk and adhere to the side of the friction disk, one side of the driving component is connected to the trigger mechanism, when the transmission shaft stalls, the trigger mechanism controls the driving component to drive the friction block to move toward one side of the friction disk and adhere to the side of the friction disk.

[0012] Furthermore, the driving assembly includes a mounting frame, and two A-connecting rods are symmetrically rotatably connected to the upper surface of the mounting frame, and the middle sections of the A-connecting rods are rotatably connected to the adjacent friction blocks respectively, and the top end of one of the A-connecting rods is rotatably connected to the B-connecting rod, and the end of the B-connecting rod is rotatably connected to a connecting plate, and the bottom end of the connecting plate is rotatably connected to the top end of another A-connecting rod, and one side of the connecting plate is rotatably connected to a piston rod, and the bottom end of the piston rod is externally slidably connected to a cylinder, and the bottom end of the cylinder is rotatably connected to the mounting frame, and one side of the inner wall of the cylinder is fixedly connected to an elastic member, and one end of the elastic member is fixedly connected to the piston rod, and a trigger mechanism is used to drive the piston rod to move downward along the inner wall of the cylinder.

[0013] Furthermore, the trigger mechanism includes a turntable fixedly connected to the end of the transmission shaft, a clamping plate is arranged on the side of the turntable, and the two clamping plates are arranged in a circular array with the axis of the turntable as the center. The clamping plate is provided with two ends, namely a fixed end and a clamping end. The fixed end of the clamping plate is rotatably connected to the turntable, a spring is fixedly connected to one side of the fixed end of the clamping plate, and the end of the spring is fixedly connected to the clamping end of the other clamping plate. A gear ring is rotatably connected to the outside of the turntable, and a plurality of clamping grooves are provided on the inner side of the gear ring in a circular array with its axis as the center.

[0014] Furthermore, a C gear is meshed with one side of the ring gear, and a horizontal shaft is sleeved inside the C gear. One end of the horizontal shaft is rotatably connected to the lifting frame, and the other end of the horizontal shaft is fixedly connected to a partition plate. The outside of the partition plate is rotatably connected to a fixed plate, and the fixed plate is fixedly connected to the lifting frame through a bracket. The outer side of the partition plate is coaxially arranged with the fixed plate, and a push plate is fixedly connected to one circumferential side of the partition plate, and one side of the push plate is slidably connected to the inner wall of the fixed plate. A partition plate is provided at the bottom of the inner cavity of the fixed plate, and the top of the partition plate is slidably connected to the partition plate. The partition plate, the partition plate and the push plate jointly divide the interior of the fixed plate into two flow chambers, and the two flow chambers are connected with an A duct and a B duct. The other end of the A duct is respectively connected to the inner cavities of the two cylinders, and the connecting point is located at the upper end of the inner cavity of the cylinder, and a one-way valve is fixedly installed on the A duct and the B duct.

[0015] Furthermore, the flow cavity is filled with a flow medium.

[0016] A method for using a lifting device for construction, applicable to the above-mentioned lifting device for construction, comprises the following steps:

[0017] S1. First, lift the hoisting frame by the crane, and control the unwinding of the winding roller by the B driving mechanism to adjust the length of one end of the two steel wire ropes connected to the prefabricated part;

[0018] S2, connect the ends of the two steel wire ropes to the anchor points of the prefabricated parts;

[0019] S3, then drive the lifting wheel to move along the length direction of the lifting frame through the A driving mechanism, adjust the positions of the two lifting wheels, and adjust the angle between one end of the steel wire rope connected to the prefabricated part and the prefabricated part;

[0020] S4. The crane lifts the prefabricated part to the installation position through the lifting frame. At this time, the unwinding of the winding roller is controlled by the B drive mechanism to adjust the inclination angle of the bottom of the prefabricated part to ensure that the installation point of the prefabricated part is aligned with the embedded part. Then the crane lowers the lifting frame until the prefabricated part falls to the installation position, completing the lifting of the prefabricated part.

[0021] Compared with the prior art, the present invention provides a lifting device for construction and a method for using the same, which realizes the length adjustment of the steel wire rope by controlling the rotation of the winding roller, and can control the A driving mechanism to drive the lifting wheel to adjust along the length direction of the lifting frame, so as to adjust the angle between the steel wire rope and the prefabricated part during lifting, so that the steel wire rope can be used for prefabricated parts with a large distance between two anchor points, and reduce the situation that the load on the lifting frame is too concentrated due to the excessive concentration of support points of the steel wire rope during lifting, which easily causes damage to the lifting frame;

[0022] The transmission shaft is driven to rotate by the B rotating driving member, and when the transmission shaft rotates, the A gear is driven to rotate, and the A gear drives the B gears on both sides thereof to rotate, and when the B gear rotates, the winding roller connected thereto is driven to rotate. Since the B gears are arranged on both sides of the A gear, the rotation directions of the B gears are opposite, and thus the rotation directions of the two winding rollers are opposite, so that the length of one end of a steel wire rope connected to the prefabricated part can be shortened, and the length of the other end of the steel wire rope connected to the prefabricated part can be correspondingly lengthened, so that the inclination angle of the bottom of the prefabricated part can be effectively adjusted, so that the installation point of the prefabricated part is aligned with the embedded part for installation, thereby improving the installation efficiency of the prefabricated part;

[0023] When the B rotating drive member stalls, the trigger mechanism drives the friction block to move toward one side of the friction disk, so that the friction disk is pressed against the side of the friction disk, thereby hindering the rotation of the winding roller. Moreover, since the B rotating drive member drives the two winding rollers to rotate at the same time, and the two winding rollers rotate in opposite directions, when the B rotating drive member stalls, the rotation of the two winding rollers is hindered at the same time, so that a faster reaction can be achieved to hinder the rotation of the winding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the overall external structure provided by an embodiment of the present invention;

[0026] Figure 2 A first cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0027] Figure 3 A second cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0028] Figure 4 A third cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0029] Figure 5 The embodiment of the present invention provides Figure 3 A is an enlarged schematic diagram;

[0030] Figure 6 The embodiment of the present invention provides Figure 3 The enlarged schematic diagram of point B in FIG.

[0031] Figure 7 A schematic diagram of the exploded structure of the ring gear, C gear, horizontal shaft, partition plate, fixed plate and push plate provided in an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the combination of a turntable, a clamping plate, a spring, a gear ring, a clamping slot and a transmission shaft provided in an embodiment of the present invention;

[0033] Fig. 9 A fourth cross-sectional structural schematic diagram provided for an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Lifting frame; 2. Lifting wheel; 3. First guide member; 31. Moving frame; 32. Roller; 4. A driving mechanism; 41. Screw rod; 42. A rotating driving member; 5. Winding roller; 6. Wire rope; 7. B driving mechanism; 71. A gear; 72. B gear; 73. Transmission shaft; 74. B rotating driving member; 8. Limiting mechanism; 81. Trigger mechanism; 811. Turntable; 812. Card plate; 813. Spring; 814. Gear ring; 81 5. Slot; 816. C gear; 817. Horizontal axis; 818. Separation plate; 819. Fixed plate; 820. Push plate; 821. A conduit; 822. B conduit; 823. One-way valve; 824. Flow chamber; 82. Friction plate; 83. Friction block; 84. Drive assembly; 841. Mounting frame; 842. A connecting rod; 843. Connecting plate; 844. Piston rod; 845. Cylinder; 846. Elastic member; 847. B connecting rod. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Embodiment 1:

[0038] See also Figures 1 to 9 A lifting device for construction, comprising a lifting frame 1, two lifting wheels 2 are arranged at the bottom of the lifting frame 1 and along its length direction, one side of the lifting wheel 2 is connected to a first guide member 3 for limiting its movement along the length direction of the lifting frame 1, and the other side of the lifting wheel 2 is connected to a driving mechanism 4 for driving its movement;

[0039] Two winding rollers 5 are symmetrically arranged at the bottom of the middle section of the lifting frame 1. The outside of the rotating shaft of the winding roller 5 is rotatably connected to the lifting frame 1. A steel wire rope 6 is wound around the outside of the winding roller 5. One end of the steel wire rope 6 is fixedly connected to the winding roller 5, and the other end of the steel wire rope 6 is passed around the adjacent hanging wheel 2.

[0040] One side of the winding roller 5 is connected to a B driving mechanism 7 for driving the winding roller 5 to rotate around its own axis, and the other side of the winding roller 5 is connected to a limiting mechanism 8 for preventing the winding roller 5 from rotating around its own axis.

[0041] When the existing lifting device is used to lift the prefabricated parts, it is necessary to manually use the steel wire rope 6 to connect the anchor point and the hook of the crane. The anchor point positions of different prefabricated parts are different, and the steel wire rope 6 needs to be manually adjusted before lifting to adapt to the anchor point position of the prefabricated parts, resulting in low lifting efficiency. In addition, when the prefabricated parts are installed, embedded parts need to be installed in advance to connect and fix the prefabricated parts with the embedded parts. When the prefabricated parts are lifted to the installation position, the bottom inclination angle of the prefabricated parts needs to be adjusted to align with the embedded parts for installation, which is difficult to achieve with the existing lifting device.

[0042] To this end, the ends of the two steel wire ropes 6 are connected to the anchor points of the prefabricated parts, and the length of the steel wire ropes 6 is adjusted by controlling the rotation of the winding roller 5. The A driving mechanism 4 can be controlled to drive the hoisting wheel 2 to adjust along the length direction of the hoisting frame 1 to adjust the angle between the steel wire rope 6 and the prefabricated parts during hoisting, so that it can be suitable for prefabricated parts with a large distance between the two anchor points, and reduce the load on the hoisting frame 1 due to the excessive concentration of support points of the steel wire rope 6 during hoisting, which is easy to damage the hoisting frame 1. When the angle between the steel wire rope 6 and the prefabricated parts is too small, the load actually borne by the steel wire rope 6 may be uneven, and the steel wire rope 6 bears a greater tension, which leads to local overload and affects the overall hoisting safety.

[0043] Since the winding roller 5 is used to wind up the wire rope 6 to adjust the inclination of the prefabricated part and the length of the two wire ropes 6, most of the prefabricated parts are made of reinforced concrete for hoisting, and their weight is large, which may easily cause the B drive mechanism 7 to drive the winding roller 5 to stall. Once such a situation occurs, it may easily cause damage to the device or the prefabricated part to fall and be damaged, posing a great safety hazard. For this reason, when the B drive mechanism 7 drives the winding roller 5 to stall, the limiting mechanism 8 is used to prevent the winding roller 5 from rotating around its own axis, so that the length of the end of the wire rope 6 connected to the prefabricated part is fixed to avoid damage to the device or the prefabricated part from falling and being damaged.

[0044] In one embodiment of the present invention, the first guide member 3 includes a movable frame 31, and a plurality of rollers 32 are symmetrically mounted on the inner side of the upper end of the movable frame 31 for rotation. One side of the roller 32 is rollingly connected to the lifting frame 1, and the bottom end of the movable frame 31 is rotationally connected to the rotating shaft of the lifting wheel 2.

[0045] In one embodiment of the present invention, the A driving mechanism 4 includes a screw rod 41, the outer portion of the screw rod 41 is threadedly connected to the mobile frame 31, one end of the screw rod 41 is rotatably connected to the lifting frame 1, and the other end of the screw rod 41 is connected to an A rotating driving member 42 that drives the screw rod 41 to rotate around its own axis;

[0046] In one embodiment of the present invention, the A rotary drive member 42 is a motor or a rotary cylinder, the A rotary drive member 42 is fixedly mounted on the lifting frame 1, and the output shaft end of the A rotary drive member 42 is fixedly connected to the screw 41;

[0047] During operation, the screw rod 41 is driven to rotate by the A rotary driving member 42. Under the restriction of the first guide member 3, the lifting wheel 2 can only move along the length direction of the lifting frame 1. When the screw rod 41 rotates, the screw 41 moving frame 31 drives the lifting wheel 2 to move along the length direction of the lifting frame 1. According to the different distances between the two anchor points when different prefabricated parts are being hoisted, the angle between the end of the steel wire rope 6 connected to the prefabricated part and the prefabricated part is adjusted;

[0048] In one embodiment of the present invention, the B driving mechanism 7 includes an A gear 71, and both sides of the A gear 71 are meshed with B gears 72, the inner side of the B gear 72 is fixedly connected to the rotating shaft of the adjacent winding roller 5, the inner side of the A gear 71 is fixedly connected to a transmission shaft 73, the outer side of the transmission shaft 73 is rotatably connected to the lifting frame 1, and one end of the transmission shaft 73 is connected to a B rotating driving member 74 that drives it to rotate around its own axis;

[0049] In one embodiment of the present invention, the B rotary drive member 74 is a motor or a rotary cylinder, the output shaft end of the B rotary drive member 74 is fixedly connected to the transmission shaft 73, and the B rotary drive member 74 is fixedly installed on the lifting frame 1;

[0050] During operation, the B rotary drive member 74 drives the transmission shaft 73 to rotate, and when the transmission shaft 73 rotates, it drives the A gear 71 to rotate, and the A gear 71 drives the B gears 72 on both sides thereof to rotate, and when the B gear 72 rotates, it drives the winding roller 5 connected thereto to rotate. Since the B gear 72 is arranged on both sides of the A gear 71, the rotation directions of the B gear 72 are opposite, so that the rotation directions of the two winding rollers 5 are opposite, so that the length of one end of a steel wire rope 6 connected to the prefabricated part can be shortened, and the length of the other end of the steel wire rope 6 connected to the prefabricated part can be correspondingly lengthened, so that the inclination angle of the bottom of the prefabricated part can be effectively adjusted, so that the installation point of the prefabricated part is aligned with the embedded part for installation, thereby improving the installation efficiency of the prefabricated part.

[0051] In one embodiment of the present invention, the limiting mechanism 8 includes a trigger mechanism 81 and two groups of limiting components, the two groups of limiting components are respectively arranged at the ends of the rotating shafts of the two winding rollers 5, the limiting components include a friction disc 82, the inner side of the friction disc 82 is fixedly connected to the rotating shaft of the adjacent winding roller 5, and friction blocks 83 are arranged on both sides of the friction disc 82. One side of the friction block 83 is connected to a driving component 84 for driving it to move toward one side of the friction disc 82 and to be close to the side of the friction disc 82. One side of the driving component 84 is connected to the trigger mechanism 81. When the transmission shaft 73 stalls, the trigger mechanism 81 controls the driving component 84 to drive the friction block 83 to move toward one side of the friction disc 82 and to be close to the side of the friction disc 82.

[0052] During operation, once the B rotating drive member 74 stalls, the friction block 83 is driven to move toward the side of the friction disk 82 through the trigger mechanism 81, so that the friction disk 82 is pressed against the side of the friction disk 82, thereby hindering the rotation of the winding roller 5. Moreover, since the B rotating drive member 74 drives the two winding rollers 5 to rotate at the same time, and the two winding rollers 5 rotate in opposite directions, when the B rotating drive member 74 stalls, the rotation of the two winding rollers 5 is hindered at the same time, so that it can react more quickly and hinder the rotation of the winding roller 5.

[0053] In one embodiment of the present invention, the driving assembly 84 includes a mounting frame 841, and two A-links 842 are symmetrically rotatably connected to the upper surface of the mounting frame 841. The middle sections of the A-links 842 are rotatably connected to the adjacent friction blocks 83, respectively. The top of one of the A-links 842 is rotatably connected to a B-link 847, and the end of the B-link 847 is rotatably connected to a connecting plate 843. The bottom end of the connecting plate 843 is rotatably connected to the top of another A-link 842. One side of the connecting plate 843 is rotatably connected to a piston rod 844, and the bottom end of the piston rod 844 is externally slidably connected to a cylinder 845. The bottom end of the cylinder 845 is rotatably connected to the mounting frame 841, and one side of the inner wall of the cylinder 845 is fixedly connected to an elastic member 846, and one end of the elastic member 846 is fixedly connected to the piston rod 844. The trigger mechanism 81 is used to drive the piston rod 844 to move downward along the inner wall of the cylinder 845.

[0054] During operation, the trigger mechanism 81 drives the piston rod 844 to move downward along the inner wall of the cylinder 845, and the piston rod 844 pulls one end of the connecting plate 843 to move, and the other end of the connecting plate 843 pushes the A connecting rod 842 connected thereto while pulling the B connecting rod 847. The B connecting rod 847 drives the other A connecting rod 842 to rotate under the pulling of the connecting plate 843, so that the two friction blocks 83 move toward one side of the friction disk 82 and stick to the friction disk 82, thereby preventing the rotation of the winding roller 5.

[0055] In one embodiment of the present invention, the trigger mechanism 81 includes a turntable 811 fixedly connected to the end of the transmission shaft 73, a card plate 812 is arranged on the side of the turntable 811, and the two card plates 812 are arranged in a circular array with the axis of the turntable 811 as the center, and the card plate 812 is provided with two ends, namely a fixed end and a clamping end, the fixed end of the card plate 812 is rotatably connected to the turntable 811, a spring 813 is fixedly connected to one side of the fixed end of the card plate 812, and the end of the spring 813 is fixedly connected to the clamping end of another card plate 812, and the turntable 811 is externally rotatably connected to a ring gear 814, and a plurality of clamping grooves 815 are opened on the inner side of the ring gear 814 in a circular array with its axis as the center. When the turntable 811 stalls with the rotation of the transmission shaft 73, the card plate 812 can rotate with its connection with the turntable 811 as the center, and one side of the clamping end of the card plate 812 is inserted into one of the clamping grooves 815;

[0056] A C gear 816 is meshed with one side of the gear ring 814, and a transverse shaft 817 is sleeved inside the C gear 816. One end of the transverse shaft 817 is rotatably connected to the lifting frame 1, and the other end of the transverse shaft 817 is fixedly connected to a partition plate 818. The partition plate 818 is externally rotatably connected to a fixed plate 819. The fixed plate 819 is fixedly connected to the lifting frame 1 through a bracket. The outer side of the partition plate 818 is coaxially arranged with the fixed plate 819. One side of the partition plate 818 is fixedly connected to a push plate 820 in a circumferential direction, and one side of the push plate 820 is slidably connected to the inner wall of the fixed plate 819. A partition plate is provided at the bottom of the inner cavity of the fixed disk 819, and the top of the partition plate is slidably connected to the partition plate 818. The partition plate, the partition plate 818 and the push plate 820 jointly divide the interior of the fixed disk 819 into two flow chambers 824. The two flow chambers 824 are both connected with the A conduit 821 and the B conduit 822. The other end of the A conduit 821 is respectively connected with the inner cavities of the two cylinder barrels 845, and the connection point is located at the upper end of the inner cavity of the cylinder barrel 845. A one-way valve 823 is fixedly installed on the A conduit 821 and the B conduit 822;

[0057] In one embodiment of the present invention, the flow chamber 824 is filled with a flow medium, and the flow medium is hydraulic oil;

[0058] During operation, the stall of the B rotating drive member 74 causes the transmission shaft 73 to stall. When the transmission shaft 73 stalls, it drives the turntable 811 to rotate, and the turntable 811 drives the card plate 812 to rotate. Since the B rotating drive member 74 stalls, the rotation speed of the turntable 811 increases. Under the action of centrifugal force, the card plate 812 rotates to overcome the pulling force of the spring 813, and the card end of the card plate 812 is inserted into one of the card slots 815, thereby driving the ring gear 814 to rotate, and the rotation of the ring gear 814 drives the C gear 816 to rotate. When the C gear 816 rotates, it drives the horizontal shaft 817 to rotate, and the horizontal shaft 817 drives the separation plate 818 to rotate. Since the fixed plate 819 is fixed on the lifting frame 1, when the separation plate 818 rotates, the push plate 820 thereon squeezes the flowing medium in the flow chamber 824 in its rotation direction. The one-way valve 823 on the B conduit 822 connected thereto is closed, and the one-way valve 823 on the A conduit 821 connected thereto is opened, and the flowing medium is pressed into the two cylinders 845. Since the other ends of the A conduit 821 are respectively connected to the inner cavities of the two cylinders 845, and the connecting point is located at the upper end of the inner cavity of the cylinder 845, under the action of the flowing medium, the piston rod 844 moves downward along the inner wall of the cylinder 845. At the same time, the pressure in the other flow cavity 824 is reduced. At this time, under the action of negative pressure, the one-way valve 823 on the B conduit 822 connected to the other flow cavity 824 is opened, and the gas is sucked into the flow cavity 824 by the negative pressure. When the transmission shaft 73 reverses and stalls, the same steps as above are performed, so that when the driving part stalls, the rotation of the winding roller 5 can be effectively hindered to prevent the preform from falling and being damaged and the equipment from being damaged.

[0059] Embodiment 2:

[0060] A method for using a lifting device for construction, applicable to the above-mentioned lifting device for construction, comprises the following steps:

[0061] S1, first lift the hoisting frame 1 by a crane, and control the unwinding of the winding roller 5 by the B driving mechanism 7, and adjust the length of one end of the two steel wire ropes 6 connected to the prefabricated part;

[0062] S2, connecting the ends of the two steel wire ropes 6 to the anchor points of the prefabricated parts;

[0063] S3, then drive the hanging wheel 2 to move along the length direction of the lifting frame 1 through the A driving mechanism 4, adjust the positions of the two hanging wheels 2, and adjust the angle between the end of the steel wire rope 6 connected to the prefabricated part and the prefabricated part;

[0064] S4, the crane lifts the prefabricated part to the installation position through the lifting frame 1. At this time, the unwinding of the winding roller 5 is controlled by the B drive mechanism 7 to adjust the inclination angle of the bottom of the prefabricated part to meet the alignment of the installation point of the prefabricated part with the embedded part. Then the crane lowers the lifting frame 1 until the prefabricated part falls to the installation position, completing the lifting of the prefabricated part.

[0065] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lifting device for construction, comprising a lifting frame (1), characterized in that: Two lifting wheels (2) are arranged at the bottom of the lifting frame (1) and along its length direction; one side of the lifting wheel (2) is connected to a first guide member (3) for limiting its movement along the length direction of the lifting frame (1); the other side of the lifting wheel (2) is connected to an A driving mechanism (4) for driving its movement; Two winding rollers (5) are symmetrically arranged at the bottom of the middle section of the lifting frame (1), the rotating shafts of the winding rollers (5) are externally connected to the lifting frame (1) for rotation, a steel wire rope (6) is wound around the outside of the winding rollers (5), one end of the steel wire rope (6) is fixedly connected to the winding rollers (5), and the other end of the steel wire rope (6) is passed around the adjacent lifting wheel (2); One side of the winding roller (5) is connected to a B driving mechanism (7) for driving the winding roller to rotate around its own axis, and the other side of the winding roller (5) is connected to a limiting mechanism (8) for preventing the winding roller (5) from rotating around its own axis.

2. A lifting device for construction according to claim 1, characterized in that: The first guide member (3) comprises a moving frame (31), a plurality of rollers (32) are symmetrically rotatably mounted on the inner side of the upper end of the moving frame (31), one side of the rollers (32) is rollingly connected to the lifting frame (1), and the bottom end of the moving frame (31) is rotationally connected to the rotating shaft of the lifting wheel (2).

3. A lifting device for construction according to claim 1, characterized in that: The A driving mechanism (4) comprises a screw rod (41), the outside of which is threadedly connected to the moving frame (31), one end of which is rotationally connected to the lifting frame (1), and the other end of which is connected to an A rotating driving member (42) for driving the screw rod (41) to rotate around its own axis.

4. A lifting device for construction according to claim 1, characterized in that: The B driving mechanism (7) comprises an A gear (71), both sides of the A gear (71) are meshed with B gears (72), the inner side of the B gear (72) is fixedly connected to the rotating shaft of the adjacent winding roller (5), the inner side of the A gear (71) is fixedly connected to a transmission shaft (73), the outer side of the transmission shaft (73) is rotatably connected to the lifting frame (1), and one end of the transmission shaft (73) is connected to a B rotating driving member (74) that drives it to rotate around its own axis.

5. A lifting device for construction according to claim 4, characterized in that: The limiting mechanism (8) comprises a trigger mechanism (81) and two groups of limiting components, the two groups of limiting components are respectively arranged at the ends of the rotating shafts of the two winding rollers (5), the limiting components comprise a friction disc (82), the inner side of the friction disc (82) is fixedly connected to the rotating shaft of the adjacent winding roller (5), friction blocks (83) are arranged on both sides of the friction disc (82), one side of the friction block (83) is connected to a driving component (84) for driving it to move toward one side of the friction disc (82) and to be in close contact with the side of the friction disc (82), one side of the driving component (84) is connected to the trigger mechanism (81), when the transmission shaft (73) stalls, the trigger mechanism (81) controls the driving component (84) to drive the friction block (83) to move toward one side of the friction disc (82) and to be in close contact with the side of the friction disc (82).

6. A lifting device for construction according to claim 5, characterized in that: The driving assembly (84) includes a mounting frame (841), and the upper surface of the mounting frame (841) is symmetrically rotatably connected to two A-links (842), and the middle sections of the A-links (842) are respectively rotatably connected to the adjacent friction blocks (83), and the top end of one of the A-links (842) is rotatably connected to a B-link (847), and the end of the B-link (847) is rotatably connected to a connecting plate (843), and the bottom end of the connecting plate (843) is rotatably connected to the top end of the other A-link (842). The connecting plate (843) is rotatably connected to a piston rod (844) on one side, and a cylinder (845) is slidably connected to the outside of the bottom end of the piston rod (844). The bottom end of the cylinder (845) is rotatably connected to the mounting frame (841). An elastic member (846) is fixedly connected to one side of the inner wall of the cylinder (845). One end of the elastic member (846) is fixedly connected to the piston rod (844). The trigger mechanism (81) is used to drive the piston rod (844) to move downward along the inner wall of the cylinder (845).

7. A lifting device for construction according to claim 6, characterized in that: The trigger mechanism (81) comprises a rotating disk (811) fixedly connected to the end of the transmission shaft (73); a clamping plate (812) is arranged on the side of the rotating disk (811); two clamping plates (812) are arranged in a circular array with the axis of the rotating disk (811) as the center; the clamping plate (812) is provided with two ends, namely a fixed end and a clamping end; the fixed end of the clamping plate (812) is rotatably connected to the rotating disk (811); a spring (813) is fixedly connected to one side of the fixed end of the clamping plate (812); the end of the spring (813) is fixedly connected to the clamping end of the other clamping plate (812); a gear ring (814) is rotatably connected to the outside of the rotating disk (811); a plurality of clamping grooves (815) are provided on the inner side of the gear ring (814) in a circular array with the axis of the gear ring as the center.

8. A lifting device for construction according to claim 7, characterized in that: A C gear (816) is meshed with one side of the gear ring (814), a transverse shaft (817) is sleeved inside the C gear (816), one end of the transverse shaft (817) is rotatably connected to the lifting frame (1), the other end of the transverse shaft (817) is fixedly connected to a partition plate (818), the outside of the partition plate (818) is rotatably connected to a fixed plate (819), the fixed plate (819) is fixedly connected to the lifting frame (1) through a bracket, the outer side of the partition plate (818) is coaxially arranged with the fixed plate (819), one side of the partition plate (818) is fixedly connected to a push plate (820), and one side of the push plate (820) is slidably connected to the inner wall of the fixed plate (819). The fixed disk (819) is dynamically connected, a partition plate is provided at the bottom of the inner cavity of the fixed disk (819), and the top of the partition plate is slidably connected to the partition plate (818). The partition plate, the partition plate (818) and the push plate (820) jointly divide the interior of the fixed disk (819) into two flow chambers (824). The two flow chambers (824) are both connected with the A conduit (821) and the B conduit (822). The other end of the A conduit (821) is respectively connected with the inner cavities of the two cylinder barrels (845), and the connection point is located at the upper end of the inner cavity of the cylinder barrel (845). The A conduit (821) and the B conduit (822) are both fixedly installed with a one-way valve (823).

9. A lifting device for construction according to claim 8, characterized in that: The flow chamber (824) is filled with a flow medium.

10. A method for using a lifting device for construction, characterized in that: A lifting device for construction applicable to any one of claims 1 to 9, comprising the following steps: S1, firstly, the hoisting frame (1) is hoisted by a crane, and the unwinding of the winding roller (5) is controlled by the B driving mechanism (7), and the length of one end of the two steel wire ropes (6) connected to the prefabricated part is adjusted; S2, connecting the ends of the two steel cables (6) to the anchor points of the prefabricated parts; S3, driving the hanging wheel (2) to move along the length direction of the hanging frame (1) through the A driving mechanism (4), adjusting the positions of the two hanging wheels (2), and adjusting the angle between the end of the steel wire rope (6) connected to the prefabricated part and the prefabricated part; S4. The crane lifts the prefabricated part to the installation position through the lifting frame (1). At this time, the unwinding of the winding roller (5) is controlled by the B driving mechanism (7) to adjust the inclination angle of the bottom of the prefabricated part to meet the alignment of the installation point of the prefabricated part with the embedded part. Then, the crane lowers the lifting frame (1) until the prefabricated part falls to the installation position, completing the lifting of the prefabricated part.

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