Lifting type adjusting device for steel sling of front upper cross beam of hanging basket
By using horizontal steel plates, vertical ear plates and T-shaped screws to lift and lower adjustment devices in bridge construction, the structural stability and accuracy of the steel suspender adjustment device on the front of the hanging basket is solved, and the stability and safety of the hanging basket construction is improved.
Patent Information
- Application Number
- CN202421778202.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-07-25
AI Technical Summary
During the construction of existing bridge projects, the steel suspender adjustment device on the front beam of the hanging basket has poor structural stability and low adjustment accuracy, resulting in inconvenient construction and insufficient safety.
The lifting and lowering adjustment device is adopted including horizontal steel plates, vertical ear plates, base steel plates and T-shaped screws. Through the cooperation of the screw rod and the matching nut, the steel suspender is accurately adjusted, and the force transmission and support stability are enhanced.
The precise adjustment of the hanging basket suspender formwork is achieved, the construction stability and safety are improved, and the linear accuracy of bridge construction is improved.
Smart Images
Figure CN223240546U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lifting adjustment device for a steel sling of a front upper crossbeam of a hanging basket, belonging to the field of bridge engineering construction. Background Art
[0002] At present, in the construction of bridge projects, long-span special-structure continuous beams are usually constructed by cantilever casting with a hanging basket. The process is relatively mature. According to industry specifications, the upper crossbeam bearing structural members in front of the hanging basket must be stressed with steel slings. Because the hanging baskets are all made by professional hanging basket manufacturers and delivered to the project for rental use, during the design and processing, in order to consider the turnover and versatility of the hanging baskets, the manufacturers have fixed the spacing of the pin holes on the steel slings, with spacings ranging from 10 to 20 cm. The steel slings then use pins to transfer the force to the upper crossbeam bolster for overall stress. During the construction of the hanging basket, the template elevation needs to be adjusted linearly according to the continuous beams of different spans. The elevation adjustment data varies greatly. In order to meet the bottom form elevation of each segment, multi-layer steel plates of varying thickness are usually used. Support pads, the maximum thickness of steel plate supports ranges from 10 to 20 cm. When the steel plate supports exceed 3 layers, the overall support stability is poor, and it is very easy to cause instability during the concrete pouring process, and the safety is poor. The minimum thickness of the steel plate is generally 1 cm thick, and the maximum adjustment accuracy is 1 cm. During the bottom formwork adjustment process, it is often impossible to accurately meet the elevation adjustment requirements, and the support adjustment is often performed at the expense of the linearity of the continuous beam. The operability is poor and the adjustment accuracy is low. At present, although there are some steel sling lifting adjustment devices, they are generally supported by double screws, and the support stability and stability are poor. There is a four-screw support structure, but its bottom stability and overall stability of the device are poor, and the lifting method also has obvious defects, which is very inconvenient to use. Summary of the Invention
[0003] The utility model provides a lifting adjustment device for a steel sling of a front upper crossbeam of a hanging basket, which solves the problems of poor structural stability of existing devices and methods and inconvenience in use in actual projects.
[0004] In order to solve the above problems, it is proposed to adopt a lifting and adjusting device for the steel sling of the upper front crossbeam of the hanging basket, which includes a steel pin shaft, a load-bearing structure, a lifting and adjusting device and a base steel plate. The load-bearing structure consists of a horizontal steel plate and two vertical ear plates. The two vertical ear plates are relatively arranged on both sides of the steel sling panel. The two vertical ear plates are correspondingly provided with sling holes. The steel pin shaft serves as a force-transmitting component and is passed through the sling holes on the vertical ear plates and the shaft holes on the steel sling. The lower parts of the two vertical ear plates are welded and fixed to the horizontal steel plate. The base steel plate is arranged opposite to and parallel to the bottom of the horizontal steel plate. The two sides of the base steel plate are respectively fixed to the upper surface of the double-piece I-beam of the upper front crossbeam of the hanging basket. The lifting and adjusting device is arranged between the horizontal steel plate and the base steel plate to adjust the lifting and lowering of the horizontal steel plate.
[0005] In the aforementioned steel sling lifting and adjusting device, an upper notch is provided in the middle of the horizontal steel plate, and a lower notch is provided on the base steel plate at the vertical projection of the upper notch, and the steel sling is hung through the upper and lower notches.
[0006] In the aforementioned steel sling lifting and adjusting device, the lifting and adjusting device includes four "T"-shaped screw rods and matching base nuts. Screw rod holes are respectively opened at the four corners of the horizontal steel plate. The hole positions need to be determined according to the center position of the double-piece I-steel waist plate of the upper crossbeam in front of the hanging basket. The upper ends of the four "T"-shaped screw rods pass through the screw rod holes at the four corners of the horizontal steel plate from bottom to top, and the nuts of the "T"-shaped screw rods are screwed to the lower surface of the horizontal steel plate. Matching nuts are welded and fixed on the base steel plate at the projection position of the screw rod holes, and the lower ends of the "T"-shaped screw rods are tightened and fixed in the matching nuts.
[0007] In the aforementioned steel sling lifting adjustment device, the distance between each screw rod hole and the two nearest edges on the horizontal steel plate is 7 cm.
[0008] In the aforementioned steel sling lifting and adjusting device, the "T"-shaped screw rod is a 45cm long, φ30mm screw rod, and the screw rod holes opened on the horizontal steel plate are all φ32mm. The size of the horizontal steel plate is 50cm*35cm, the thickness is 1cm, the upper groove size is 15cm*5cm, and the base steel plate and the horizontal steel plate have the same size and material.
[0009] In the aforementioned steel sling lifting adjustment device, the overall length of the matching nut is greater than or equal to 6 cm, triangular ribs are welded around the outside of the matching nut, and triangular ribs are also welded between the vertical ear plate and the horizontal steel plate.
[0010] In the aforementioned steel sling lifting and adjusting device, a rectangular perforated steel plate is welded and fixed to the lower surface of the horizontal steel plate corresponding to the screw hole to enhance the stress strength at this location.
[0011] Compared with the existing technology, the utility model includes a force-transmitting part, a force-bearing structure, an adjustable device, and a base plate. The lifting device is adjusted by a screw rod and a matching nut, and the adjustment accuracy can reach within 1.5mm, realizing the requirement of precise adjustment of the hanging basket sling template. Compared with traditional steel plate supports and other facilities, the steel sling support facility is safer, more stable in force, and more accurate. It effectively solves the problem of steel sling supports during the construction of the hanging basket, enhances the stability of the hanging basket construction, and simultaneously improves the linear accuracy of bridge construction. It has been verified to be safe and reliable on site. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural diagram of the utility model;
[0013] Figure 2It is the main view of the utility model;
[0014] Figure 3 yes Figure 2 Left view of;
[0015] Figure 4 It is a top view of the present utility model. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.
[0017] Example
[0018] Refer to the attached Figures 1 to 4 , This embodiment improves the adjustment device of the steel sling of the front upper crossbeam of the hanging basket to achieve convenient lifting and lowering adjustment of the steel sling under the premise of ensuring structural stability, including a force-transmitting member, a force-bearing structure 2, a lifting adjustment device 3 and a base steel plate 4. The force-transmitting member adopts a φ6cm 40cr steel pin designed by the original hanging basket manufacturer. The force-bearing structure 2 consists of a horizontal steel plate 21 and two vertical ear plates 22 of Q345 steel with a thickness of 4cm. The two vertical ear plates 22 are relatively arranged on both sides of the steel sling 5 panel. The two vertical ear plates 22 are correspondingly provided with sling holes 23 of not less than φ6.1cm. The steel pin 1 is passed through the two vertical plates as a force-transmitting member through the sling holes 23 on the vertical ear plates 22 and the shaft hole 51 on the steel sling 5. On the ear plate 22 and the steel sling 5, the lower parts of the two vertical ear plates 22 are welded and fixed on the horizontal steel plate 21 of 50cm*35cm and thickness of 1cm. The base steel plate 4 is arranged opposite and parallel to the bottom of the horizontal steel plate 21. The base steel plate 4 and the horizontal steel plate 21 have the same size and material. The two sides of the base steel plate 4 are respectively fixed to the upper surface of the double-pieced I45 I-beam of the front upper cross beam 6 of the hanging basket. A 15cm*5cm upper notch 24 is opened in the middle of the horizontal steel plate 21, and a lower notch 41 is opened on the base steel plate 4 at the vertical projection of the upper notch 24. The steel sling 5 is hung through the upper notch 24 and the lower notch 41. The lifting adjustment device 3 is arranged between the horizontal steel plate 21 and the base steel plate 4 to adjust the lifting of the horizontal steel plate 21.
[0019] The lifting and adjusting device 3 includes four "T"-shaped screw rods 31 with a length of 45 cm and φ30 mm and a matching base nut 32, which ensures that the adjustment height of the steel sling 5 can achieve an adjustable space of more than 0-20 cm, meeting the template adjustment requirements of any continuous beam. The four corners of the horizontal steel plate 21 are respectively provided with φ32 mm screw rod holes 25 (non-threaded holes, in the absence of nuts and other limitations, the screw rods can move freely up and down in the holes). The distance between each screw rod hole 25 and the two nearest edges on the horizontal steel plate 21 is 7 cm. The hole position needs to be determined according to the center position of the double-piece I45 I-steel waist plate of the upper crossbeam 6 in front of the hanging basket. It is necessary to ensure that the screw rod hole position is located on the center line of the waist plate to ensure the best force effect. A single 5 cm*5 cm piece is also welded and fixed at the screw rod hole 25 on the lower surface of the horizontal steel plate 21. A rectangular perforated steel plate 27 is provided with holes corresponding to the projections of the screw holes 25 so that the screw rods 31 can pass through. The setting of the rectangular perforated steel plate 27 enhances the force strength at this location. The upper ends of the four "T"-shaped screw rods 31 pass through the screw holes 25 at the four corners of the horizontal steel plate 21 from bottom to top, and the nuts of the "T"-shaped screw rods 31 are screwed to the lower surface of the rectangular perforated steel plate 27. A φ30mm base nut 32 is welded and fixed on the base steel plate 4 at the projection position of the screw hole 25. The lower ends of the "T"-shaped screw rods 31 are tightened and fixed in the base nut 32. The overall length of the base nut 32 is greater than or equal to 6cm. A 1cm thick triangular rib 42 is welded around the outside of the base nut 32. A 2cm thick triangular rib 26 is also welded between the vertical ear plate 22 and the horizontal steel plate 21.
[0020] During specific use, after the continuous beam 0# block is cast, the hanging basket assembly begins. After the upper crossbeam 6 in front of the hanging basket is installed in place, the steel sling 5 is installed. According to the installation position of the steel sling 5, the base steel plate 4 is first fixed on the I-beam of the upper crossbeam 6 in front of the hanging basket, and the steel sling lifting adjustment device of the upper crossbeam in front of the hanging basket is placed on the base steel plate 4, and the center position of the device is adjusted to ensure that the screw hole position coincides with the center line of the vertical waist plate of the upper crossbeam. The steel sling is hoisted to the top of the device by a tower crane, and the steel sling is slowly lowered through the notch reserved on the device panel and placed in the appropriate position. After the pin shaft hole of the steel sling is consistent with the hole position of the ear plate, it is installed horizontally. Install the steel pin shaft to bear the load, and then install other devices and slings in turn to complete the assembly of the entire hanging basket force system. According to the calculation and measurement data of the continuous beam, adjust the elevation of the bottom template of the hanging basket. Use the tower crane to adjust the steel sling to bear the load again, and then fine-tune the elevation through the adjusting nut on the screw rod under the upper steel plate. The pitch of a single thread of the T-type screw rod is 3mm, and the adjustment is to rotate half a thread, and the maximum adjustment accuracy can reach less than 1.5mm. After measuring and verifying that the elevation is adjusted in place, release the force of the tower crane on the steel sling, and transfer the force to the nut on the screw rod in the adjustment device. For the subsequent construction of each section, refer to the above adjustment method and adjust it in sequence.
[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A lifting and adjusting device for the steel sling of the front upper crossbeam of a hanging basket, characterized by: The invention comprises a steel pin shaft (1), a load-bearing structure (2), a lifting and adjusting device (3) and a base steel plate (4). The load-bearing structure (2) is composed of a horizontal steel plate (21) and two vertical ear plates (22). The two vertical ear plates (22) are relatively arranged on both sides of the steel sling (5) panel. The two vertical ear plates (22) are correspondingly provided with sling holes (23). The steel pin shaft (1) is used as a force-transmitting member to transmit the load through the sling holes (23) on the vertical ear plates (22) and the shaft on the steel sling (5). Holes (51) are provided on two vertical ear plates (22) and the steel sling (5); the lower parts of the two vertical ear plates (22) are welded and fixed on the horizontal steel plate (21); the base steel plate (4) is arranged opposite and parallel to the lower part of the horizontal steel plate (21); both sides of the base steel plate (4) are respectively fixed to the upper surface of the double-piece I-beam of the front upper crossbeam (6) of the hanging basket; the lifting adjustment device (3) is provided between the horizontal steel plate (21) and the base steel plate (4) to adjust the lifting of the horizontal steel plate (21).
2. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 1 is characterized in that: An upper notch (24) is provided in the middle of the horizontal steel plate (21), a lower notch (41) is provided on the base steel plate (4) at the vertical projection of the upper notch (24), and the steel sling (5) is suspended through the upper notch (24) and the lower notch (41).
3. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 1 is characterized in that: The lifting and adjusting device (3) comprises four "T"-shaped screw rods (31) and matching base nuts (32). Screw rod holes (25) are respectively opened at the four corners of the horizontal steel plate (21). The upper ends of the four "T"-shaped screw rods (31) respectively pass through the screw rod holes (25) at the four corners of the horizontal steel plate (21) from bottom to top, and the nuts of the "T"-shaped screw rods (31) are screwed to the lower surface of the horizontal steel plate (21). Base nuts (32) are welded and fixed at the projection positions of the screw rod holes (25) on the base steel plate (4), and the lower ends of the "T"-shaped screw rods (31) are screwed and fixed in the base nuts (32).
4. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 1 is characterized in that: The distance between each screw rod hole (25) and the two nearest edges on the horizontal steel plate (21) is 7 cm.
5. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 3 is characterized in that: The "T"-shaped screw rod (31) is a screw rod with a length of 45 cm and a diameter of 30 mm. The screw rod holes (25) opened on the horizontal steel plate (21) are all 32 mm in diameter. The size of the horizontal steel plate (21) is 50 cm*35 cm and the thickness is 1 cm. The size of the upper notch (24) is 15 cm*5 cm. The size and material of the base steel plate (4) are the same as those of the horizontal steel plate (21).
6. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 1, characterized in that: The overall length of the base nut (32) is greater than or equal to 6 cm, and triangular ribs (42) are welded around the outer sides of the base nut (32). A triangular rib (26) is also welded between the vertical ear plate (22) and the horizontal steel plate (21).
7. The lifting and adjusting device for the steel strap of the front upper crossbeam of the hanging basket according to claim 1, characterized in that: A rectangular perforated steel plate (27) is welded and fixed to the lower surface of the horizontal steel plate (21) at a position corresponding to the screw rod hole (25) to enhance the stress strength at that position.