Auxiliary hoisting mechanism for steel truss
By designing an auxiliary hoisting mechanism consisting of a crossbeam, sliding sleeve, guide rail, slider, two-way lead screw, and rotating assembly, the limitations of motor wiring and the single clamping method in existing technologies have been solved, achieving flexibility and convenience in steel truss hoisting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHONG JIU STEEL STRUCTURE CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-21
AI Technical Summary
Existing steel truss hoisting mechanisms are limited by motor wiring during large-scale hoisting, and the clamping components can only be clamped from the outside of the steel truss, making them inflexible in use.
The design incorporates a crossbeam, sliding sleeve, guide rail, slider, two-way lead screw, handwheel, and rotating assembly. The position and direction of the clamping blocks can be adjusted manually, achieving flexibility in clamping the steel truss, avoiding motor wiring limitations, and allowing clamping from the outside or inside.
It enables flexible use in different lifting environments, reduces usage restrictions, and improves the convenience and adaptability of lifting operations.
Smart Images
Figure CN224530435U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel truss hoisting technology, and in particular to an auxiliary hoisting mechanism for steel trusses. Background Technology
[0002] Auxiliary hoisting mechanisms for steel trusses are engineering equipment specifically designed for the installation of large steel trusses. They are primarily used for lifting, positioning, and securing truss components to ensure construction safety and precision. These mechanisms typically consist of hoisting supports, hydraulic or mechanical adjustment systems, guiding devices, and safety locking mechanisms, and can adapt to the needs of trusses with varying spans and weights. Their core function is to assist the main hoisting equipment (such as tower cranes or crawler cranes) in assembling trusses under complex conditions, making them particularly suitable for high-altitude, large-span, or confined space operations.
[0003] A search revealed that patent CN218619838U discloses a steel pipe truss hoisting auxiliary device, which uses two sets of clamping mechanisms to clamp the steel pipe truss for hoisting purposes. A driving component moves the two sets of clamping components closer to or further away from each other, so that the clamping components can quickly clamp the steel pipe truss or quickly separate the clamping components from the steel pipe truss.
[0004] However, the above-mentioned device has the following drawbacks: the clamping components need to be driven by a drive motor, so the power supply to the motor must be considered during hoisting. This is acceptable for small-scale hoisting, but for larger hoisting areas, the power supply becomes a limitation, making it inconvenient to use. Secondly, the two clamping components can only clamp and hoist the steel truss from the outside. If the steel truss is positioned in a way that makes it inconvenient to clamp from the outside, the hoisting capability of this mechanism will be limited. Therefore, further improvements are needed, and an auxiliary hoisting mechanism for steel trusses is proposed. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an auxiliary hoisting mechanism for steel trusses.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary hoisting mechanism for steel trusses, comprising a crossbeam, two sliding sleeves slidably fitted onto the surface of the crossbeam, guide rails fixed to the lower surfaces of the two sliding sleeves, a groove formed on the lower surface of the guide rails, two symmetrical sliders slidably connected inside the grooves, and a bidirectional lead screw rotatably connected inside the grooves via bearings, the bidirectional lead screw passing through the two sliders and threadedly connected to the sliders, one end of the bidirectional lead screw extending to the outside of the guide rails and fixedly connected to a handwheel, a rotating assembly fixed to the lower surface of the sliders, a clamping block fixed to the bottom end of the rotating assembly, the clamping block having an arc-shaped side design.
[0007] Furthermore, steel cables are fixed at both ends of the crossbeam, and a hanging ring is fixed at the top of both steel cables.
[0008] Furthermore, the sidewall of the sliding sleeve is connected to a first fastening bolt via a threaded connection.
[0009] Furthermore, a second fastening bolt is connected through the side of the handwheel and rotated via a thread.
[0010] Furthermore, a guide rod is fixed inside the groove, and the guide rod passes through the two sliders and is slidably connected to the sliders.
[0011] Furthermore, the rotating assembly includes a fixed post fixed to the lower surface of the slider, the fixed post having a T-shaped cross-section, a sleeve rotatably fitted onto the surface of the fixed post, and the clamping block fixed to the bottom of the sleeve.
[0012] Furthermore, a through hole is provided in the middle of the fixed column, and a side hole is provided on the side wall of the sleeve. A locking rod is slidably connected inside the side hole. An end plate is fixed to the end of the locking rod outside the sleeve. A tension spring is fixedly connected to the end plate and the outer side wall of the sleeve. The end of the locking rod inside the sleeve is inserted into the through hole.
[0013] The beneficial effects of this utility model are:
[0014] 1. In use, this utility model includes a crossbeam, sliding sleeve, guide rail, slider, bidirectional lead screw, handwheel, rotating assembly, and clamping blocks. The sliding sleeve slides on the surface of the crossbeam, allowing the guide rail and bottom clamping blocks to be adjusted to any position without being limited by the insertion hole. In addition, the handwheel rotates the bidirectional lead screw to move the two clamping blocks, causing them to move closer or further apart. The clamping blocks hold the steel truss. The manual operation eliminates the need to consider wiring issues, making the auxiliary mechanism less restricted in its use.
[0015] 2. In use, this utility model is equipped with a rotating component and a clamping block. The clamping block can rotate with the sleeve of the rotating component, thereby facilitating the adjustment of the direction of the clamping block and realizing the reverse adjustment of the arc groove on the clamping block. The clamping block can be used to clamp the steel truss from the outside or to support it from the inside of the steel truss. The hoisting method is more flexible and can be adjusted according to the on-site hoisting environment, making it more convenient to use. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1This is a perspective view of the present utility model;
[0018] Figure 2 This is a main sectional view of the present invention;
[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0020] Figure 4 This is a cross-sectional view of the rotating component of this utility model.
[0021] The attached figures are labeled as follows:
[0022] 1. Crossbeam; 2. Sliding sleeve; 21. First fastening bolt; 3. Guide rail; 31. Slide groove; 4. Slider; 5. Two-way lead screw; 6. Handwheel; 61. Second fastening bolt; 7. Guide rod; 8. Rotating assembly; 81. Fixed column; 82. Sleeve; 83. Through hole; 84. Side hole; 85. Clamping rod; 86. End plate; 87. Tension spring; 9. Clamping block; 10. Steel cable; 11. Hanging ring. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] like Figures 1-4 As shown, an auxiliary hoisting mechanism for steel trusses is disclosed, comprising a crossbeam 1, with two sliding sleeves 2 slidably fitted onto the surface of the crossbeam 1. Guide rails 3 are fixed to the lower surfaces of the two sliding sleeves 2. A groove 31 is provided on the lower surface of the guide rails 3. Two symmetrical sliders 4 are slidably connected inside the groove 31. A bidirectional lead screw 5 is rotatably connected inside the groove 31 via a bearing. The bidirectional lead screw 5 passes through the two sliders 4 and is threadedly connected to the sliders 4. One end of the bidirectional lead screw 5 extends to the outside of the guide rail 3 and is fixedly connected to a handwheel 6. A rotating component 8 is fixed to the lower surface of the sliders 4. A clamping block 9 is fixed to the bottom end of the rotating component 8. The side of the clamping block 9 is arc-shaped.
[0025] Both ends of the crossbeam 1 are fixed with steel cables 10, and the tops of the two steel cables 10 are fixed with hanging rings 11.
[0026] When in use, the hanging ring 11 is hung on the hook of the lifting device, and the mechanism is lifted by the lifting device.
[0027] The first fastening bolt 21 is connected to the side wall of the sliding sleeve 2 through and via a threaded rotation.
[0028] The sliding sleeve 2 can move to any position along the surface of the crossbeam 1, thereby adjusting the distance between the two guide rails 3 to accommodate the hoisting of steel trusses of different lengths. After adjusting the position of the sliding sleeve 2, the first fastening bolt 21 is tightened to press and fix the surface of the crossbeam 1.
[0029] The handwheel 6 has a second fastening bolt 61 that runs through its side and is connected to it by a threaded rotation.
[0030] Rotating the handwheel 6 to turn the double-acting screw 5 drives two sliders 4 to move along the slide groove 31 in opposite directions, thereby moving the bottom rotating assembly 8 and the clamping block 9, which in turn clamps the steel truss. Then, tightening the second fastening bolt 61 presses against the surface of the guide rail 3, locking and securing the handwheel 6.
[0031] A guide rod 7 is fixed inside the slide groove 31. The guide rod 7 passes through the two sliders 4 and is slidably connected to the sliders 4.
[0032] By setting the guide rod 7, the downward pulling force on the slider 4 can be borne, thereby preventing the bidirectional lead screw 5 from deforming under the downward pulling force.
[0033] The rotating assembly 8 includes a fixed post 81 fixed to the lower surface of the slider 4. The fixed post 81 has a T-shaped cross section. A sleeve 82 is rotatably sleeved on the surface of the fixed post 81. A clamping block 9 is fixed to the bottom of the sleeve 82.
[0034] The sleeve 82 can rotate around the surface of the fixed post 81, thereby changing the direction of the bottom clamping block 9, so that the arc grooves on the two clamping blocks 9 are located on adjacent or opposite sides.
[0035] When the arc-shaped grooves of the two clamping blocks 9 are on adjacent sides, the two clamping blocks 9 are brought closer together by rotating the double-acting screw 5, and the arc-shaped grooves of the clamping blocks 9 are used to clamp and fix the steel truss on the surface of the crossbar. When the arc-shaped grooves on the two clamping blocks 9 are on opposite sides, the two clamping blocks 9 are moved away from each other by rotating the double-acting screw 5, so that the two clamping blocks 9 are clamped from inside the steel truss on the surface of the crossbar, which makes it easy to make flexible adjustments according to the actual hoisting situation.
[0036] The fixed column 81 has a through hole 83 in the middle, and the sleeve 82 has a side hole 84 on its side wall. A locking rod 85 is slidably connected inside the side hole 84. An end plate 86 is fixed to the end of the locking rod 85 outside the sleeve 82. A tension spring 87 is fixedly connected to the end plate 86 and the outer side wall of the sleeve 82. The end of the locking rod 85 inside the sleeve 82 is inserted into the through hole 83.
[0037] When it is necessary to adjust the direction of the clamping block 9, first pull the end plate 86 to separate the clamping rod 85 from the through hole 83, then rotate the sleeve 82 180° so that the clamping rod 85 is aligned with the other end of the through hole 83. Then, release the end plate 86. When the tension spring 87 pulls the end plate 86 to reset, the clamping rod 85 is inserted into the other end of the through hole 83, thus fixing the sleeve 82.
[0038] Working principle: First, according to the length of the steel truss, move the two sliding sleeves 2 so that the distance between the two guide rails 3 matches the length of the steel truss. Then, rotate the handwheels 6 on the two guide rails 3 respectively to drive the two clamping blocks 9 at the bottom of the guide rails 3 to move closer or further apart. Use the clamping blocks 9 to clamp the steel truss. Then, hang the hanging ring 11 on the hook of the lifting device.
[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An auxiliary hoisting mechanism for steel trusses, comprising a crossbeam (1), characterized in that: Two sliding sleeves (2) are slidably sleeved on the surface of the crossbeam (1). Guide rails (3) are fixed on the lower surfaces of the two sliding sleeves (2). A groove (31) is opened on the lower surface of the guide rail (3). Two symmetrical sliders (4) are slidably connected inside the groove (31). A double-acting screw (5) is rotatably connected inside the groove (31) through a bearing. The double-acting screw (5) passes through the two sliders (4) and is threadedly connected to the sliders (4). One end of the double-acting screw (5) extends to the outside of the guide rail (3) and is fixedly connected to a handwheel (6). A rotating component (8) is fixed on the lower surface of the slider (4). A clamp (9) is fixed at the bottom of the rotating component (8). The side of the clamp (9) is arc-shaped.
2. The auxiliary hoisting mechanism for steel trusses according to claim 1, characterized in that: Both ends of the crossbeam (1) are fixed with steel cables (10), and the top ends of the two steel cables (10) are fixed with a hanging ring (11).
3. The auxiliary hoisting mechanism for steel trusses according to claim 1, characterized in that: The sidewall of the sliding sleeve (2) is penetrated and connected to the first fastening bolt (21) by a threaded rotation.
4. The auxiliary hoisting mechanism for steel trusses according to claim 1, characterized in that: The handwheel (6) is connected to a second fastening bolt (61) through the side and via a threaded rotation.
5. The auxiliary hoisting mechanism for steel trusses according to claim 1, characterized in that: A guide rod (7) is fixed inside the slide groove (31), and the guide rod (7) passes through the two sliders (4) and is slidably connected to the sliders (4).
6. The auxiliary hoisting mechanism for steel trusses according to claim 1, characterized in that: The rotating assembly (8) includes a fixed post (81) fixed to the lower surface of the slider (4), the fixed post (81) has a T-shaped cross section, a sleeve (82) is rotatably sleeved on the surface of the fixed post (81), and the clamp (9) is fixed to the bottom of the sleeve (82).
7. The auxiliary hoisting mechanism for steel trusses according to claim 6, characterized in that: The fixed column (81) has a through hole (83) in the middle, and the sleeve (82) has a side hole (84) on its side wall. A locking rod (85) is slidably connected inside the side hole (84). An end plate (86) is fixed to one end of the locking rod (85) outside the sleeve (82). A tension spring (87) is fixedly connected to the end plate (86) and the outer side wall of the sleeve (82). The end of the locking rod (85) inside the sleeve (82) is inserted into the through hole (83).