Lifting appliance for prefabricated stairs

Abstract

The utility model provides a hoisting sling for a prefabricated stair, which comprises a top plate, a hanging hook fixedly connected to the top of the top plate, a stair body arranged at the bottom of the top plate, a motor arranged at the bottom of the top plate, a solenoid fixedly connected to the output end of the motor, and an adjusting component arranged at the bottom of the top plate. According to the hoisting sling for the prefabricated staircase, the problem that in the hoisting process of the prefabricated staircase, the overall or local stress of the sling is not uniform possibly in the hoisting process of the prefabricated staircase due to the strong wind condition outside or the structural problem of the prefabricated staircase is solved; the problems that the gravity center of the prefabricated staircase shifts in the hoisting process, the hoisting efficiency is reduced, hoisting equipment possibly topples over, and the prefabricated staircase is damaged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting slings, in particular to a hoisting sling for prefabricated stairs. Background Art

[0002] Lifting slings are devices used in lifting machinery to lift heavy objects. Common slings include hooks, slings, rings, lifting suction cups, clamps and forks, etc. These slings are widely used in the lifting and hoisting industry. The design and use of slings need to consider factors such as the connection method with the crane, the characteristics of the object being lifted, and the operating efficiency. At the same time, prefabricated stairs are a kind of staircase components pre-manufactured in the factory, and then transported to the construction site for assembly and adjustment. Compared with traditional cast-in-place stairs, prefabricated stairs have a higher degree of industrialization, standardization and construction efficiency. Its advantages include easy design, fast installation, good quality, beautiful appearance, etc., and can reduce secondary processing and construction waste on site.

[0003] The patent document with announcement number: CN214989649U discloses "a lifting sling for prefabricated stairs". The angle of the iron chain is fixed by a fixed pulley when the lifting pull ring is pulled. The direction of the tension on the lifting pull ring is fixed during the lifting process, which avoids the tension on the lifting pull ring being in a changing state due to shaking during the lifting process, reduces the burden on the lifting pull ring and embedded parts, and the device plays an auxiliary support role through the base plate and the connecting frame, dispersing the tension on the lifting pull ring to multiple parts.

[0004] However, during the hoisting process of the prefabricated stairs, strong winds outside or structural problems of the prefabricated stairs may cause uneven force on the hoisting equipment as a whole or locally during the hoisting process of the prefabricated stairs, which may cause the center of gravity of the prefabricated stairs to shift during the hoisting process, reduce the hoisting efficiency, and may also cause the hoisting equipment to topple over and the prefabricated stairs to be damaged. Therefore, it is necessary to provide a hoisting sling for prefabricated stairs to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a hoisting sling for prefabricated stairs which can adjust the center of gravity of the prefabricated stairs when the center of gravity of the prefabricated stairs is offset, thereby allowing the prefabricated stairs to remain stable during the hoisting process.

[0006] The utility model provides a lifting sling for prefabricated stairs, comprising a top plate, the top of which is fixedly connected with a hanging hook, the bottom of which is provided with a staircase body, the bottom of which is provided with a motor, the output end of which is fixedly connected with a spiral tube, and the bottom of which is provided with an adjustment component.

[0007] As the utility model provides a lifting sling for prefabricated stairs, preferably, the adjustment component includes an adjustment plate, a counterweight, an inclination sensor, a pressure sensor and a PLC controller, the bottom of the top plate is fixedly connected with the adjustment plate, the inside of the adjustment plate is slidably connected with the counterweight, the top of the adjustment plate is provided with an inclination sensor, the bottom of the adjustment plate is provided with a pressure sensor, and the front surface of the adjustment plate is provided with a PLC controller.

[0008] As the utility model provides a lifting sling for prefabricated stairs, preferably, a screw mechanism is arranged inside the adjusting plate, and a first fixing ring is fixedly connected to the bottom of the adjusting plate.

[0009] As the utility model provides a lifting sling for prefabricated stairs, preferably, the inner ring of the first fixing ring is rotatably connected to the first connecting ring, and the bottom of the first connecting ring is fixedly connected to the first connecting rope.

[0010] As the utility model provides a lifting sling for prefabricated stairs, preferably, the bottom of the first connecting rope is fixedly connected to the second connecting ring, the inner ring of the second connecting ring is rotatably connected to the second fixing ring, and the bottom of the second fixing ring is fixedly connected to the fixing plate.

[0011] As the utility model provides a lifting sling for prefabricated stairs, preferably, the inner circle of the screw tube is threadedly connected with an adjusting rod, the bottom of the adjusting rod is fixedly connected with a first connecting plate, and the inside of the first connecting plate is rotatably connected with a first positioning bolt.

[0012] As the utility model provides a lifting sling for prefabricated stairs, preferably, one side of the first connecting plate is fixedly connected to the second connecting plate, and the second connecting plate is rotatably connected to the second positioning bolt inside.

[0013] As the utility model provides a lifting sling for prefabricated stairs, preferably, a handrail is arranged on the top of the staircase body, a positioning hole is opened inside the staircase body, and a pre-buried pipe is fixedly connected inside the positioning hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The hoisting sling for prefabricated stairs is provided with an adjustment component. After the prefabricated stairs are connected, when the center of gravity of the prefabricated stairs is shifted due to the structural design or the hoisting angle, the inclination sensor monitors the inclination angle of the adjustment plate. At the same time, under the action of the pressure sensor, the pressure between each connecting rope and the second fixing ring can be detected in real time, so as to determine the direction of the center of gravity shift of the prefabricated stairs. At the same time, the inclination sensor transmits data to the PLC controller. Under the action of the PLC controller, the movement distance and movement amount of the counterweight block are controlled according to the weight of the stairs and the center of gravity shift angle, so that the screw mechanism starts to work. The screw mechanism includes a servo motor and a screw. Under the action of the screw rod, the counterweight moves to the specified position, thereby changing the center of gravity of the device, and further causing the center of gravity of the prefabricated stairs to shift due to asymmetric design, wind interference or lifting angle deviation, causing the lifting equipment to tilt and the steel cable to swing, thereby improving the lifting effect of the prefabricated stairs and solving the problem that during the lifting of the prefabricated stairs, strong winds outside or structural problems of the prefabricated stairs may cause uneven force on the hoisting equipment as a whole or locally during the lifting process of the prefabricated stairs, thereby causing the center of gravity of the prefabricated stairs to shift during the lifting process, reducing the lifting efficiency, and may also cause the lifting equipment to topple over and the prefabricated stairs to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of a hoisting sling for prefabricated stairs provided by the utility model;

[0017] Figure 2 It is a structural schematic diagram of the adjustment component of the utility model;

[0018] Figure 3 For this utility model Figure 1 An enlarged schematic diagram of the structure at A is shown;

[0019] Figure 4 This is a schematic diagram of the structural connection between the staircase body and the embedded pipe of the utility model;

[0020] Figure 5 For this utility model Figure 1 An enlarged schematic diagram of the structure at point B is shown.

[0021] Numbers in the figure: 1. Top plate; 2. Suspension hook; 3. Stair body; 4. Motor; 5. Screw; 6. Adjustment assembly; 601. Adjustment plate; 602. Counterweight; 603. Inclination sensor; 604. Pressure sensor; 605. PLC controller; 7. Screw mechanism; 8. First fixing ring; 9. First connecting ring; 10. Connecting rope; 11. Second connecting ring; 12. Second fixing ring; 13. Fixing plate; 14. Adjustment rod; 15. First connecting plate; 16. First positioning bolt; 17. Second connecting plate; 18. Second positioning bolt; 19. Handrail; 20. Positioning hole; 21. Embedded pipe. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in Figure 1 A structural schematic diagram of a preferred embodiment of a hoisting sling for prefabricated stairs provided by the utility model; Figure 2 It is a structural schematic diagram of the adjustment component of the utility model; Figure 3 For this utility model Figure 1 An enlarged schematic diagram of the structure at A is shown; Figure 4 This is a schematic diagram of the structural connection between the staircase body and the embedded pipes of the utility model; Figure 5 For this utility model Figure 1 A structural enlarged schematic diagram of B is shown. A prefabricated staircase hoisting device comprises a top plate 1, a hanging hook 2 is fixedly connected to the top of the top plate 1, a staircase body 3 is arranged at the bottom of the top plate 1, a motor 4 is arranged at the bottom of the top plate 1, a solenoid 5 is fixedly connected to the output end of the motor 4, and an adjustment component 6 is arranged at the bottom of the top plate 1.

[0024] In this embodiment: by providing a hanging hook 2, it is convenient for workers to install and bundle the steel cable, so that the staircase body 3 can be hoisted. At the same time, under the action of the motor 4, the screw tube 5 can be driven to rotate, thereby allowing the adjusting rod 14 to move.

[0025] As a technical optimization scheme of the utility model, the adjustment component 6 includes an adjustment plate 601, a counterweight 602, an inclination sensor 603, a pressure sensor 604 and a PLC controller 605. The bottom of the top plate 1 is fixedly connected to the adjustment plate 601, the counterweight 602 is slidably connected inside the adjustment plate 601, the top of the adjustment plate 601 is provided with an inclination sensor 603, the bottom of the adjustment plate 601 is provided with a pressure sensor 604, and the front surface of the adjustment plate 601 is provided with a PLC controller 605.

[0026] In this embodiment: under the action of the inclination sensor 603, the inclination angle of the adjustment plate 601 can be detected. At the same time, the inclination sensor 603 is based on micro-electromechanical systems or electrolyte sensing technology to measure the inclination angle of an object relative to the direction of gravity. The pressure sensor 604 is located inside the second connecting ring 11. When the connecting rope 10 drives the second fixing ring 12 and the fixing plate 13 to move through the second connecting ring 11, the pressure sensor 604 is subjected to the pressure of the second fixing ring 12, so that the pressure sensor 604 can detect the pressure between the second connecting ring 11 and the second fixing ring 12, thereby detecting the tension generated by the stair body 3 during hoisting, so as to facilitate the adjustment of the center of gravity position of the device through the counterweight block 602. At the same time, the pressure sensor 604 is a sensor that converts mechanical pressure into electrical signals through piezoelectric effect or strain gauges. At the same time, under the action of the PLC controller 605, the data signals of the inclination sensor 603 and the pressure sensor 604 can be received and processed, thereby controlling the movement distance and movement amount of the counterweight block 602.

[0027] As a technical optimization solution of the utility model, a screw mechanism 7 is provided inside the adjusting plate 601 , and a first fixing ring 8 is fixedly connected to the bottom of the adjusting plate 601 .

[0028] In this embodiment: by setting a screw mechanism 7, the screw mechanism 7 includes a servo motor and a screw. Under the action of the servo motor, the screw can be rotated, and then the screw can drive the counterweight block 602 to move, so that the counterweight block 602 can move to a specified position.

[0029] As a technical optimization solution of the utility model, the inner ring of the first fixing ring 8 is rotatably connected to the first connecting ring 9 , and the bottom of the first connecting ring 9 is fixedly connected to the first connecting rope 10 .

[0030] In this embodiment, by providing the first fixing ring 8 and the first connecting ring 9 , the adjusting plate 601 can be kept stable during the hoisting process of the staircase body 3 .

[0031] As a technical optimization solution of the utility model, the bottom of the first connecting rope 10 is fixedly connected to the second connecting ring 11, the inner circle of the second connecting ring 11 is rotatably connected to the second fixing ring 12, and the bottom of the second fixing ring 12 is fixedly connected to the fixing plate 13.

[0032] In this embodiment, by providing the second fixing ring 12 and the second connecting ring 11 , it is convenient for workers to install the pressure sensor 604 , so that the pressure sensor 604 can monitor the pressure generated during the hoisting process of the stair body 3 .

[0033] As a technical optimization solution of the utility model, the inner circle of the screw tube 5 is threadedly connected to the adjusting rod 14, the bottom of the adjusting rod 14 is fixedly connected to the first connecting plate 15, and the inside of the first connecting plate 15 is rotatably connected to the first positioning bolt 16.

[0034] In this embodiment, the motor 4 is started, and the solenoid 5 is rotated under the action of the motor 4, and the solenoid 5 can drive the adjusting rod 14 to move, and the first connecting plate 15 and the second connecting plate 17 are moved to the specified positions.

[0035] As a technical optimization solution of the present invention, a second connecting plate 17 is fixedly connected to one side of the first connecting plate 15 , and a second positioning bolt 18 is rotatably connected inside the second connecting plate 17 .

[0036] In this embodiment, under the action of the second positioning bolt 18 , the second positioning bolt 18 is rotated so that the second positioning bolt 18 can enter the interior of the stair body 3 and the second connecting plate 17 , so that the second positioning bolt 18 can position and connect the stair body 3 and the second connecting plate 17 .

[0037] As a technical optimization solution of the utility model, a handrail 19 is arranged on the top of the staircase body 3 , a positioning hole 20 is opened inside the staircase body 3 , and a pre-buried pipe 21 is fixedly connected inside the positioning hole 20 .

[0038] In this embodiment, the number of the embedded pipes 21 is equal to the sum of the number of the first positioning bolts 16 and the second positioning bolts 18 , and both the first positioning bolts 16 and the second positioning bolts 18 are connected to the staircase body 3 through the embedded pipes 21 .

[0039] The working principle of a hoisting device for prefabricated stairs provided by the utility model is as follows:

[0040] When the staff uses the device to hoist the staircase body 3, first, the staff uses the motor 4 to make the screw tube 5 start to rotate, so as to adjust the height and position of each first positioning bolt 16 and the second positioning bolt 18, and then the staff connects the staircase body 3 through multiple first positioning bolts 16 and second positioning bolts 18. After the staircase body 3 is connected, the hanging hook 2 is connected through the steel cable to hoist the staircase body 3. When the center of gravity of the staircase body 3 is offset and may cause the device to tilt, the inclination sensor 603 adjusts the height and position of the adjusting plate 601 according to the adjustment angle. , transmit the data so that the data is received by the PLC controller 605, and the PLC controller 605 adjusts the position and number of the counterweight block 602 according to the inclination angle, so that the screw mechanism 7 starts to operate. Under the action of the screw mechanism 7, the multiple counterweight blocks 602 move, so that the device can restore balance, wherein the weight of the stair body × the offset distance of the stair body 3 = the weight of the counterweight block 602 × the moving distance of the counterweight block 602, so that the stair body 3 can remain stable during hoisting, thereby improving the hoisting efficiency of the stair body 3.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hoisting sling for prefabricated stairs, characterized in that: The staircase comprises a top plate (1), the top of the top plate (1) is fixedly connected to a hanging hook (2), the bottom of the top plate (1) is provided with a staircase body (3), the bottom of the top plate (1) is provided with a motor (4), the output end of the motor (4) is fixedly connected to a solenoid (5), and the bottom of the top plate (1) is provided with an adjustment component (6).

2. The hoisting sling for prefabricated stairs according to claim 1, characterized in that: The adjustment component (6) comprises an adjustment plate (601), a counterweight (602), an inclination sensor (603), a pressure sensor (604) and a PLC controller (605); the bottom of the top plate (1) is fixedly connected to the adjustment plate (601); the interior of the adjustment plate (601) is slidably connected to the counterweight (602); the top of the adjustment plate (601) is provided with the inclination sensor (603); the bottom of the adjustment plate (601) is provided with the pressure sensor (604); and the front surface of the adjustment plate (601) is provided with the PLC controller (605).

3. The hoisting sling for prefabricated stairs according to claim 2, characterized in that: A screw mechanism (7) is provided inside the adjustment plate (601), and a first fixing ring (8) is fixedly connected to the bottom of the adjustment plate (601).

4. The hoisting sling for prefabricated stairs according to claim 3, characterized in that: The inner ring of the first fixing ring (8) is rotatably connected to a first connecting ring (9), and the bottom of the first connecting ring (9) is fixedly connected to a first connecting rope (10).

5. The hoisting sling for prefabricated stairs according to claim 4, characterized in that: The bottom of the first connecting rope (10) is fixedly connected to a second connecting ring (11), the inner ring of the second connecting ring (11) is rotatably connected to a second fixing ring (12), and the bottom of the second fixing ring (12) is fixedly connected to a fixing plate (13).

6. The hoisting sling for prefabricated stairs according to claim 1, characterized in that: The inner ring of the screw tube (5) is threadedly connected to an adjusting rod (14), the bottom of the adjusting rod (14) is fixedly connected to a first connecting plate (15), and the interior of the first connecting plate (15) is rotatably connected to a first positioning bolt (16).

7. The hoisting sling for prefabricated stairs according to claim 6, characterized in that: A second connecting plate (17) is fixedly connected to one side of the first connecting plate (15), and a second positioning bolt (18) is rotatably connected inside the second connecting plate (17).

8. The hoisting sling for prefabricated stairs according to claim 1, characterized in that: A handrail (19) is provided on the top of the staircase body (3), a positioning hole (20) is provided inside the staircase body (3), and a pre-buried pipe (21) is fixedly connected inside the positioning hole (20).

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