A truss hoisting device

Abstract

A kind of truss hoisting device, including hanging tray unit and fixed unit, hanging tray unit includes first hanging tray and second hanging tray located below first hanging tray, the bottom center position of first hanging tray is equipped with first accommodating slot, the middle part of second hanging tray is circular hollow, the middle part of second hanging tray is equipped with cylindrical inner sliding body, inner sliding body is fixedly connected with the slot bottom of first accommodating slot by flexible connecting piece, the outside of inner sliding body is spaced apart and is equipped with multiple fan ring-shaped outer buffer body along circumference, and outer buffer body includes shell and buffer material, fixed unit is used to limit that hanging tray unit swing;First, by the synchronous swing of inner sliding body and truss, the swing amplitude of truss is reduced, then, by the buffer limiting of outer buffer body, the swing amplitude of truss is further limited, finally, outer buffer body releases elastic potential energy, and inner sliding body is returned to position.

Description

Technical Field

[0001] This invention relates to the field of lifting devices, specifically to a truss hoisting device. Background Technology

[0002] Trusses, as a type of lattice-like beam structure, possess excellent stability and overall rigidity, and are therefore widely used in large-span, large-space buildings, such as factories and high-speed railway stations. Currently, for the hoisting of large-size truss structures, cranes are generally used for traction lifting. However, the following technical problems typically exist during the truss hoisting process:

[0003] In the case of cranes, the rope traction mechanism, as the core transmission structure within the crane, includes a fixedly connected lifting rope and a lifting platform. Due to its inherent flexibility and swinging characteristics, the load connected to the lifting rope can easily swing around the connection point between the rope and the lifting platform when there is insufficient restraint or when subjected to external vibrations. Especially when lifting trusses, the large size of the truss results in a large stress area, which, under wind loads, can easily cause the truss to swing and sway significantly, posing serious safety hazards to the crane itself and surrounding personnel and facilities. Summary of the Invention

[0004] In view of this, the present invention aims to provide a truss hoisting device to solve the problem of large-scale swaying of trusses under external forces during hoisting in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A truss hoisting device includes a hoisting platform unit and a fixing unit. The hoisting platform unit includes a first hoisting platform and a second hoisting platform located below the first hoisting platform. The first hoisting platform and the second hoisting platform are threadedly connected. A first receiving groove is provided at the center of the bottom of the first hoisting platform. The first receiving groove is circular. The middle part of the second hoisting platform is circular and hollow. The cross-section of the hollow middle part of the second hoisting platform is larger than the cross-section of the first receiving groove. A cylindrical inner sliding body is provided in the middle of the second hoisting platform. The inner sliding body is fixedly connected to the bottom of the first receiving groove through a flexible connector. The top surface of the inner sliding body is in smooth contact with the bottom surface of the first hoisting platform. The bottom of the inner sliding body is fixedly connected to... The lifting device has multiple fan-shaped outer buffers spaced circumferentially on the outer side of the inner sliding body. The outer buffers are connected by springs. Each outer buffer includes a shell and a buffer material for filling the shell. The outer side of the shell away from the inner sliding body is in contact with the inner side of the second lifting platform, and the outer side of the shell is fixedly connected to the inner side of the second lifting platform. The inner side of the shell surrounds the inner sliding body, and there is a uniform gap in the circumferential direction between the inner side of the shell and the inner sliding body. The top and bottom surfaces of the shell are both concave inward. Both the inner sliding body and the outer buffers are located inside the second lifting platform. The fixing unit is used to limit the swing of the lifting platform unit.

[0007] The beneficial effects of this invention are as follows:

[0008] 1. Compared with the prior art, the lifting platform unit is divided into a first lifting platform and a second lifting platform. The second lifting platform is equipped with an inner sliding body that can slide along the bottom surface of the first lifting platform. The second lifting platform is also equipped with an outer buffer body that surrounds the inner sliding body. On the one hand, when the truss swings under the action of external force, the inner sliding body will follow the swing of the truss and move in the same direction, thereby reducing the swing amplitude of the truss. On the other hand, the outer buffer body buffers and limits the sliding of the inner sliding body, thereby further limiting the swing amplitude of the truss below the inner sliding body.

[0009] 2. The top and bottom surfaces of the outer buffer shell are concave inward. When the inner side of the shell is squeezed by the inner sliding body, the deformation of the top and bottom surfaces of the shell can absorb the kinetic energy of the inner sliding body and convert the kinetic energy into elastic potential energy for storage. When the buffering process ends, the elastic potential energy is released, pushing the inner sliding body back to its position.

[0010] 3. The fixing unit can effectively prevent the lifting platform unit from swinging during operation, and the kinetic energy generated by the inner sliding body can be transferred to the lifting boom through the fixing unit.

[0011] Furthermore, it also includes a main unit, which includes a base, an extension plate, a lifting arm, and a lifting rope arranged sequentially from bottom to top along the column. The bottom end of the column is fixedly connected to the top of the base. The extension plate is located on one side of the top of the column and is rotatably connected to the column in a horizontal direction. A traction motor is fixedly connected to the top of the extension plate. The fixed end of the lifting arm is welded to the side of the extension plate away from the traction motor. The free end of the lifting arm is rotatably connected to a vertical fixed pulley along the extension direction of the lifting arm. The lifting rope passes around the fixed pulley. One end of the lifting rope is fixedly connected to the output end of the traction motor, and the other end of the lifting rope is fixedly connected to the lifting platform unit.

[0012] Beneficial effect: The main unit drives the rotation and lifting of the hanging platform unit.

[0013] Furthermore, the fixing unit includes a first fixing seat, a telescopic rod, and a second fixing seat arranged sequentially from top to bottom. The first fixing seat is fixedly connected to the lifting arm, the second fixing seat is fixedly connected to the lifting platform unit, the telescopic rod is in a vertical state, one end of the telescopic rod is fixedly connected to the first fixing seat, and the other end of the telescopic rod is fixedly connected to the second fixing seat.

[0014] The beneficial effects are that by fixing the lifting platform unit to the lifting arm through the fixing unit, firstly, the lifting platform unit can be prevented from swinging during operation, and secondly, the kinetic energy generated by the inner sliding body can be transferred to the lifting arm during the buffering process, and then offset by the limiting of the lifting arm itself.

[0015] Furthermore, it also includes multiple support rods, one end of which is fixedly connected to the side of the column, and the other end of which is fixedly connected to the top surface of the base. The angle between the support rod and the base is 30°-60°.

[0016] Beneficial effect: By setting up support rods, the load-bearing capacity of the columns can be effectively enhanced, ensuring the safety and stability of the hoisting device.

[0017] Furthermore, a circular groove is provided at the bottom center of the inner sliding body, and horizontal rotating grooves are provided on both sides of the groove. A rotating body with the same cross-sectional size as the groove is provided inside the groove, and a rotating protrusion with the same size as the sliding groove is provided on the outside of the rotating body. The rotating body is rotatably connected to the inner sliding body through the rotating protrusion, and the lifting device is fixedly connected to the bottom of the rotating body.

[0018] The beneficial effect is that the rotating body can drive the truss to adjust its angle, which is conducive to the truss being placed in the predetermined position.

[0019] Furthermore, the top of the rotating body is provided with a second receiving groove, the second receiving groove is circular, the bottom side of the second receiving groove is provided with gear teeth along the circumference, the interior of the second receiving groove is provided with a rotary motor, the bottom of the rotary motor is fixedly connected to the inner sliding body, and the output end of the rotary motor is fixedly connected with a gear, the gear and the gear teeth are engaged.

[0020] The beneficial effect is that the rotation of the rotating body is facilitated by the setting of the rotary motor.

[0021] Furthermore, the bottom of the rotating body is provided with a long strip-shaped groove, and both sides of the groove are provided with limiting grooves. The sliding block is located inside the groove, and both sides of the sliding block are provided with sliding protrusions with the same size as the limiting grooves. The sliding block is slidably connected to the groove through the sliding protrusions, and the lifting device is fixedly connected to the bottom of the sliding block.

[0022] Beneficial effect: The sliding block can drive the spreader to slide, thereby adjusting the angle between the spreader and the vertical direction, avoiding excessive stress on the spreader due to the large angle, and ensuring the safe use of the spreader.

[0023] Furthermore, the housing is made of a metallic material.

[0024] Beneficial effects: the shell made of metal material has good elastic properties and is not easily deformed by plastic. Attached Figure Description

[0025] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0026] Figure 1 This is a schematic diagram of the overall structure of a truss hoisting device according to Embodiment 1 of the present invention.

[0027] Figure 2 for Figure 1 The enlarged view at point A1 shows the structure of the hanging plate unit.

[0028] Figure 3 This is a top view of the hanging plate unit in Embodiment 1 of the present invention, used to show the shape of the hanging plate unit.

[0029] Figure 4 for Figure 3 The sectional view along line AA shows the internal structure of the hanging platform unit.

[0030] Figure 5 for Figure 4 The enlarged view at A3 in the middle is used to show the positional relationship and connection between the rotary motor and the rotating body.

[0031] Figure 6 This is a schematic diagram of the structure of the outer buffer in Embodiment 1 of the present invention.

[0032] Figure 7 This is a bottom view of the hanging plate unit in Embodiment 1 of the present invention, used to show the composition of the buffer structure.

[0033] Figure 8 for Figure 7 The sectional view along the BB direction is used to show the internal structure of the hanging plate unit.

[0034] Figure 9 for Figure 8 The enlarged view at A4 in the middle is used to show the shape and positional relationship of the slide and the limiting groove.

[0035] Figure 10 for Figure 1 The enlarged view at A2 in the middle is used to show the structure and location of the fixed unit.

[0036] Figure 11 This is a schematic diagram of the first fixing base, used to illustrate its structure.

[0037] Figure 12 This is a schematic diagram of the second fixing base, used to illustrate its structure.

[0038] The following components are labeled in the attached diagram: Main unit 1, base 11, column 12, support rod 13, extension plate 14, traction motor 15, lifting arm 16, fixed pulley 17, lifting rope 18, lifting plate unit 2, first lifting plate 21, first receiving groove 211, second lifting plate 22, buffer mechanism 23, inner sliding body 231, rotating body 2311, second receiving groove 2312, rotary motor 2313, gear 2314, sliding groove 2315, limiting groove 23151, sliding block 2316, lifting rope 2317, auxiliary lifting rope 2318, hook 2319, flexible connector 232, outer buffer body 233, shell 2331, buffer material 2332, spring 2333, bolt 24, fixing unit 3, first fixing seat 31, first fixing part 311, first connecting part 312, second fixing seat 32, second fixing part 321, first connecting part 322, telescopic rod 33. Detailed Implementation

[0039] Example 1, see details Figures 1-12

[0040] A truss hoisting device, comprising, for example Figure 1 The main body unit 1, the hanging plate unit 2, and the fixing unit 3 are shown.

[0041] like Figure 1 As shown, the main unit 1 includes a base 11, a support rod 13, an extension plate 14, a traction motor 15, a lifting arm 16, and a fixed pulley 17 arranged sequentially from bottom to top along the column 12. The column 12 is perpendicular to the base 11, and the bottom end of the column 12 is welded to the center of the top of the base 11. To ensure that the column 12 does not deflect during the loading process, a pulley 17 is provided in the middle of the column 12. Figure 1 The support rod 13 shown has one end welded to the side of the column 12 and the other end welded to the ground of the base 11. The angle between the support rod 13 and the base 11 is within the range of 30°-60°. In this embodiment, a total of two support rods 13 are provided. By providing support rods 13, the load-bearing capacity of the column 12 can be effectively enhanced, ensuring the safety and stability of the hoisting device.

[0042] like Figure 1 As shown, an extension plate 14 is rotatably connected to the top of the column 12. The extension plate 14 is horizontal and a traction motor 15 is mounted on its top surface. The traction motor 15 is bolted to the top surface of the extension plate 14. A lifting arm 16 is provided at the end of the extension plate 14 away from the traction motor 15. The fixed end of the lifting arm 16 is bolted to the extension plate. In this embodiment, the angle between the lifting arm 16 and the horizontal plane is 60°. A vertical fixed pulley 17 is rotatably connected to the free end of the lifting arm 16 along the extension direction of the lifting arm 16. One end of the lifting rope 18 passes over the fixed pulley 17 and is fixedly connected to the output end of the traction motor 15. The other end of the lifting rope 18 is fixedly connected to the lifting platform unit 2.

[0043] like Figure 1 , Figure 2 As shown, the hanging plate unit 2 includes a first hanging plate 21 and a second hanging plate 22. In this embodiment, both the first hanging plate 21 and the second hanging plate 22 have rectangular cross-sections with the same dimensions and thickness. Threaded holes are formed at the vertices of the first hanging plate 21 and the second hanging plate 22, and are connected via... Figure 3 , Figure 4 The bolt shown is a 24mm threaded connection. Figure 4 As shown, a cylindrical first receiving groove 211 is opened at the bottom center of the first hanging plate 21, and the middle part of the second hanging plate 22 is a cylindrical hollow, and the cross-section of the hollow middle part of the second hanging plate 22 is larger than the cross-section of the first receiving groove 211.

[0044] The hollow center of the second hanging plate 22 is equipped with something like... Figure 4 The buffer mechanism 23 shown includes an inner sliding body 231 located within the hollow of the second hanging plate 22 and an outer buffer body 233 surrounding the inner sliding body 231. In this embodiment, the inner sliding body 231 is fixedly connected to the bottom of the first receiving groove 211 via a flexible connector 232 (such as a steel wire rope). It is important to note that the cross-section of the inner sliding body 231 is circular and larger than the cross-section of the first receiving groove 211, and the top surface of the inner sliding body 231 is in smooth contact with the bottom surface of the first hanging plate 21. By connecting the inner sliding body 231 to the first receiving groove 211 inside the first hanging plate 21, and ensuring that the top surface of the inner sliding body 231 is in smooth contact with the bottom surface of the first hanging plate 21, it is guaranteed that the inner sliding body 231 can slide horizontally along the bottom surface of the first hanging plate 21 when subjected to external force.

[0045] like Figure 6 As shown, the outer buffer 233 includes a housing 2331 and a buffer material 2332 (such as polyethylene terephthalate) located inside the housing 2331. In this embodiment, the housing 2331 is made of spring steel and is fan-shaped. The outer side of the housing 2331 is fitted with the inner side of the second hanging plate 22, and the outer side of the housing 2331 is welded to the inner side of the second hanging plate 22. A uniform gap is left circumferentially between the inner side of the housing 2331 and the outer side of the inner sliding body 231. The top and bottom surfaces of the housing 2331 are both concave inward, forming a... Figure 6 The arch shown.

[0046] like Figure 7As shown, in this embodiment, a total of four outer buffer bodies 233 are provided, which together surround the inner sliding body 231. A circumferential gap is left between the outer buffer bodies 233, and a spring 2333 is provided within the gap to elastically connect adjacent outer buffer bodies 233. The springs 2333 resist deformation of the end faces of the outer buffer bodies 233, preventing excessive deformation and ensuring their normal use.

[0047] When the truss is subjected to external forces (such as wind load) during lifting or inertial loads due to braking at the end of lifting, the truss will swing significantly, causing the inner sliding body 231 connecting the truss to slide outwards along the bottom of the first lifting platform 21. Through the aforementioned buffer mechanism 23, during the swing, the inner sliding body 231 contacts the outer buffer body 233 and transmits the force to the outer buffer body 233. The inner surface of the shell 2331 is compressed, causing the top and bottom surfaces of the shell 2331 to compress inwards simultaneously. The deformation of the shell 2331 and the internal buffer material absorbs the kinetic energy generated by the swing and limits the inner sliding body 231, thus buffering the swing of the lower truss. In summary, while allowing the lower truss to swing, the buffer mechanism 23 absorbs the kinetic energy generated by the swing, thereby limiting the swing amplitude of the truss.

[0048] To improve the flexibility and practicality of the lifting device, a rotating mechanism is provided at the bottom of the inner sliding body 231, such as... Figure 4 , Figure 5 As shown, the rotating mechanism includes a rotating body 2311 rotatably connected to the inner sliding body 231 and a rotating motor 2312 located on top of the rotating body 2311. In this example, an opening is formed at the center of the bottom of the inner sliding body 231. Figure 4 The groove shown has a rotating groove on its side. (As shown) Figure 4 As shown, the dimensions of the rotating body 2311 are the same as the dimensions of the groove, and a rotating protrusion with the same dimensions as the rotating groove is welded to the side of the rotating body 2311. The rotating body 2311 is rotatably connected to the inner sliding body 231 through the rotating protrusion. The top of the rotating body 2311 has an opening as shown in the figure. Figure 4 , Figure 5 The second receiving groove 2312 shown has gear teeth on its bottom side. A rotary motor 2313 is located inside the second receiving groove 2312. The bottom of the rotary motor 2313 is threadedly connected to the inner sliding body 231. A gear 2314 is threadedly connected to the power output end of the rotary motor 2313. The rotary motor 2313 is rotatably connected to the rotating body 2311 through the gear 2314. By adding a rotating mechanism, the rotating body 2311 can rotate, thereby achieving truss angle adjustment and facilitating truss placement.

[0049] In the prior art, the fixed end of the suspension rope 2317 is connected to the suspension plate rope system, and the connection point between the fixed end of the suspension rope 2317 and the suspension plate is fixed. Furthermore, the suspension points of the truss are also fixed values ​​calculated from above. When the suspension points of the truss are far apart, the angle between the suspension rope 2317 and the vertical direction becomes too large, leading to excessive stress on the suspension rope 2317 and affecting its durability and safety. Therefore, in this embodiment, a [feature / feature] is provided at the bottom of the inner sliding body 231. Figure 8 , Figure 9 The slide groove 2315 shown has a limiting groove 23151 on its side, and a limiting protrusion on the side of the sliding block 2316. The sliding block 2316 is slidably connected to the slide groove 2315 through the limiting protrusion, and the lifting rope 2317 is connected to the bottom rope of the sliding block 2316. With the above configuration, without changing the length of the lifting rope 2317, the relative sliding of the two sliding blocks 2316 adjusts the angle between the lifting rope 2317 and the vertical direction, effectively reducing the stress on the lifting rope 2317 and ensuring the safe use of the lifting rope 2317.

[0050] In addition, to enhance the connection stability between the suspension rope 2317 and the truss, an auxiliary suspension rope 2318 is provided at the end of the suspension rope 2317 near the hook 2319. In this embodiment, the auxiliary suspension rope 2318 is connected to the truss rope system, and the suspension rope 2317, the auxiliary suspension rope 2318 and the truss form a triangular structure, which improves the connection stability between the suspension rope 2317 and the truss.

[0051] To prevent the inner sliding body 231 from causing the lifting platform unit 2 to swing during the buffering process, as shown in the image, are provided on both sides of the lifting boom 16 and both sides of the lifting platform unit 2. Figure 1 , Figure 10 The fixing unit 3 shown includes a first fixing base 31, a second fixing base 32, and a telescopic rod 33. In this embodiment, the first fixing base 31 includes as follows: Figure 11 The first fixing part 311 and the first connecting part 312 are shown. The first fixing part 311 is handle-shaped, and its two ends are threaded to the side of the lifting arm 16. The first connecting part 312 is a "7"-shaped bend, and one horizontal end of the first connecting part 312 is welded to the middle of the first fixing part 311. The second fixing seat 32 includes, as shown in the figure, Figure 12 The second fixing part 321 and the second connecting part 322 are shown. The second fixing part 321 is handle-shaped, and its two ends are threaded to the side of the first hanging plate 21. The second connecting part 322 is rod-shaped and vertical, and one end of the second connecting part 322 is welded to the middle of the second fixing part 321. The telescopic rod 312 is as follows. Figure 10As shown, one end of the telescopic rod 312 is welded to the vertical end of the first connecting part 312, and the other end of the telescopic rod 32 is welded to the end of the second connecting part 322 away from the second fixing part 321.

[0052] In use, first, adjust the position of the sliding block 2316 according to the lifting point of the truss, fix the truss and the lifting rope 2317 by the hook 2319 and the auxiliary lifting rope 2318, then lift the truss to the predetermined position, and finally adjust the angle of the truss by the rotating body 2311 and lower the truss into place.

[0053] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A truss hoisting device, characterized in that, The system includes a suspension plate unit and a fixing unit. The suspension plate unit includes a first suspension plate and a second suspension plate located below the first suspension plate. The first suspension plate and the second suspension plate are threadedly connected. A first receiving groove is provided at the center of the bottom of the first suspension plate. The first receiving groove is circular. The middle part of the second suspension plate is circular and hollow. The cross-section of the hollow middle part of the second suspension plate is larger than the cross-section of the first receiving groove. A cylindrical inner sliding body is provided in the middle of the second suspension plate. The inner sliding body is fixedly connected to the bottom of the first receiving groove by a flexible connector. The top surface of the inner sliding body is flush with the first suspension plate. The bottom surface is in smooth contact. A lifting device is fixedly connected to the bottom of the inner sliding body. Multiple fan-shaped outer buffer bodies are spaced circumferentially on the outer side of the inner sliding body. The outer buffer bodies are connected by springs. Each outer buffer body includes a shell and a cushioning material for filling the shell. The outer side of the shell away from the inner sliding body is in contact with the inner side of the second lifting plate, and the outer side of the shell is fixedly connected to the inner side of the second lifting plate. The inner side of the shell surrounds the inner sliding body, and a uniform gap is left between the inner side of the shell and the inner sliding body in the circumferential direction. The top surface of the shell... Both the inner and outer surfaces are concave; the inner sliding body and the outer buffer body are located inside the second lifting platform; the fixing unit is used to limit the swing of the lifting platform unit; it also includes a main body unit, which includes a base, an extension plate, a lifting arm, and a lifting rope arranged sequentially from bottom to top along the column. The bottom end of the column is fixedly connected to the top of the base. The extension plate is located on one side of the top of the column and is rotatably connected to the column in the horizontal direction. A traction motor is fixedly connected to the top of the extension plate. The fixed end of the lifting arm is welded to the side of the extension plate away from the traction motor. The free end of the lifting arm is along the lifting arm... The extension direction is rotatably connected to a vertical fixed pulley. The lifting rope passes around the fixed pulley. One end of the lifting rope is fixedly connected to the output end of the traction motor, and the other end of the lifting rope is fixedly connected to the lifting platform unit. The fixing unit includes a first fixing seat, a telescopic rod, and a second fixing seat arranged sequentially from top to bottom. The first fixing seat is fixedly connected to the lifting arm, and the second fixing seat is fixedly connected to the lifting platform unit. The telescopic rod is in a vertical state. One end of the telescopic rod is fixedly connected to the first fixing seat, and the other end of the telescopic rod is fixedly connected to the second fixing seat.

2. The truss hoisting device according to claim 1, characterized in that, It also includes multiple support rods, one end of which is fixedly connected to the side of the column, and the other end of which is fixedly connected to the top surface of the base. The angle between the support rod and the base is 30°-60°.

3. The truss hoisting device according to claim 2, characterized in that, A circular groove is provided at the center of the bottom of the inner sliding body. Horizontal rotating grooves are provided on both sides of the groove. A rotating body with the same cross-sectional dimensions as the groove is provided inside the groove. A rotating protrusion with the same dimensions as the sliding groove is provided on the outside of the rotating body. The rotating body is rotatably connected to the inner sliding body through the rotating protrusion. The lifting device is fixedly connected to the bottom of the rotating body.

4. A truss hoisting device according to claim 3, characterized in that, The top of the rotating body is provided with a second receiving groove, which is circular. The bottom side of the second receiving groove is provided with gear teeth along the circumference. A rotary motor is provided inside the second receiving groove. The bottom of the rotary motor is fixedly connected to the inner sliding body. A gear is fixedly connected to the output end of the rotary motor, and the gear cooperates with the gear teeth.

5. A truss hoisting device according to claim 4, characterized in that, The bottom of the rotating body is provided with a long strip-shaped groove, and there are limiting grooves on both sides of the groove. The sliding block is located inside the groove, and there are sliding protrusions on both sides of the sliding block that are the same size as the limiting groove. The sliding block is slidably connected to the groove through the sliding protrusions. The lifting device is fixedly connected to the bottom of the sliding block.

6. A truss hoisting device according to claim 5, characterized in that, The shell is made of metal.

Images