CN101434365A - U type sling for super large size plastic honeycomb cellular structure member - Google Patents

Abstract

The invention belongs to the field of sling design and relates to a U-shaped sling for an ultra-large plastic honeycomb structure. The central position of the top of the FRP U-shaped card of the present invention is provided with a sling hole, and a stainless steel reinforcement is arranged on the sling hole position. There are butterfly washers and strong screws on the surface of each fixing hole. There are 5 combined holes evenly opened on the side of the U-shaped card. The combined holes are equipped with semi-round head bolts. There is a gasket on the upper and lower surfaces of the U-shaped card. There is a spring washer on the outside of the surface gasket; the light wood core is placed in the inner mold of the U-shaped card, and there is a sling between the wooden core and the U-shaped card. There is a ring buckle in the middle of the sling, and the ring buckle protrudes from the sling hole. The present invention adopts the U-shaped card of composite material, suspenders and wooden core as the main structural parts, and uses screws and bolts to combine the suspender and the parts into one body, so as to play the double-layer function of protection and bearing.

Description

U-shaped spreader for oversized plastic honeycomb structure

technical field

The invention belongs to the field of hanger design, and relates to a U-shaped hanger made of composite material for super-large-sized plastic honeycomb structure parts.

Background technique

Our common flat-panel hangers are composed of hooks, lever clamps, slings, etc. When lifting, hook up the four sides of the plate-shaped parts with hook-shaped hangers, or clamp and lift them with lever-clip hangers. However, these ordinary spreaders are easy to cause stress concentration and damage to the stress point of the honeycomb structure parts, and are not suitable for special requirements, the force direction can be changed, and the oversized honeycomb structure plate material.

Contents of the invention

The object of the present invention is to provide a lightweight U-shaped sling capable of hoisting oversized plastic honeycomb structure plate materials. The technical solution of the present invention is that there is a sling hole at the center of the top of the FRP U-shaped card, and a stainless steel extension is provided on the sling hole, the length of the U-shaped card is 200-500 mm, and two Each fixing hole is provided with a butterfly washer and a strong screw. There are 5 combined holes evenly opened on the upper and lower surfaces of the U-shaped card. The combined holes are equipped with semi-round head bolts. There is a gasket on the upper and lower surfaces of the U-shaped card. , A spring washer is added outside the gasket on the lower surface of the U-shaped card; the wooden core is placed in the inner shape of the U-shaped card, and there is a sling between the wooden core and the U-shaped card. The buckle protrudes through the strap eyelet.

The FRP U-shaped card is formed by laying high-strength glass cloth prepreg on the mold, and is cured by heating and pressurizing in the equipment. The stainless steel reinforcement is co-cured with the U-shaped card to form a whole during the molding process.

The material, width and thickness of the sling are determined according to the thickness and weight of the suspended object.

The present invention has the advantages and beneficial effects. The present invention uses composite material U-shaped clips combined with slings and wooden cores, so that the sling and the ultra-large honeycomb structure parts can be assembled into a flat whole. Through the sling device, The force point is extended to the force surface. Since the spreader is installed sideways, the force direction of the force point to the panel structure is changed, from the vertical skin direction to the skin shear direction, which greatly weakens the force. The local stress of the point to the structural part has a double-layer function of protection and load-carrying on the part; the invention is suitable for honeycomb structural parts with different thicknesses and super large sizes, and the part can be hung vertically, and when the wind resistance is large, the The connection between the spreader and the suspended objects carried will not be damaged. The present invention has high reliability, safety and replaceability; its advantages are light weight, high strength, compact structure, rain erosion resistance, and Rust can be combined with the structural parts as a whole, without affecting the overall appearance, and without obvious protrusions; the invention has strong environmental adaptability, and has no effect on the safety of the spreader when the outdoor temperature and humidity change greatly or suffer from rain erosion . The bearing capacity of a single spreader of the present invention is strong, and the load capacity of a single spreader can reach 520 kilograms, that is to say, only 4 spreader devices can carry a weight of more than 2 tons, and the weight of a super-sized product with a honeycomb structure is greatly improved. The reliability and safety margin of the spreader device are improved.

Description of drawings

Fig. 1 structural representation of the present invention;

Fig. 2 is a schematic structural diagram of the U-shaped card of the present invention.

Detailed ways

There is a sling hole at the center of the top of the FRP U-shaped card 1, and a stainless steel reinforcement 10 is arranged on the sling hole. Each fixing hole is provided with a butterfly washer 5 and a strong screw 6. There are 5 combined holes evenly opened on the side of the U-shaped card. The combined holes are equipped with semi-round head bolts 4. There is a gasket on the upper and lower surfaces of the U-shaped card 1. The surface gasket 3 and the lower surface gasket 3; there is a spring washer 7 outside the lower surface gasket 3; the wooden core 9 is placed in the inner mold of the U-shaped card 1, and a Sling 2, the middle section of sling 2 is provided with a ring buckle, and the ring buckle stretches out of the sling hole 10.

The FRP U-shaped card 1 is formed by laying high-strength glass cloth prepreg on a mould, and then cured under heat and pressure.

The material, width and thickness of the sling are determined according to the thickness and weight of the suspended object.

When assembling the spreader, according to the set lifting point position, draw the spreader assembly line with the center of the lifting point, uncover the upper and lower skins of the assembly position, remove the honeycomb interlayer material that is equal to the size of the spreader, apply glue and put it into the The removed honeycomb interlayer material is equal to the lightweight reinforcement material, and the upper and lower skins are glued to the upper and lower surfaces of the lightweight reinforcement material, and then the U-shaped high-strength FRP main stress member with the strap installed is clamped on the surface of the lightweight reinforcement material , push tight from the side, fasten the combination with 4 strong wood screws on the side, and finally use 5 bolts on the upper surface of the U-shaped high-strength FRP main stress member to connect the upper and lower skins with the main stress member, light compression The core material and the high-strength nylon sling are fastened and combined, so that the assembly of the sling device is completed.

Example

The overall size is super large, 36 meters long and 14 meters wide; it is composed of 180 unit honeycomb blocks with a length of 2.4 meters, a width of 1.2 meters, and a thickness of 20 mm. - 0.3 mm fabric membrane material; the weight of the final molded size reaches 1.6 tons. A total of 32 lifting points are set on both sides of the 36-meter length, and 16 lifting points are evenly distributed on one side. After the overall size of the part is cemented and trimmed, the following lifting device structures are assembled according to the requirements according to the positions of the lifting points.

There is a sling hole at the center of the top of the FRP U-shaped card 1, and a stainless steel reinforcement 10 is arranged on the sling hole. Each fixing hole is provided with a butterfly washer 5 and a strong screw 6. There are 5 combined holes evenly opened on the side of the U-shaped card. The combined holes are equipped with semi-round head bolts 4. There is a gasket on the upper and lower surfaces of the U-shaped card 1. The surface gasket 3 and the lower surface gasket 4; there is a spring washer 7 outside the lower surface gasket 4; the wooden core 9 is placed in the inner mold of the U-shaped card 1, and a Sling 2, the middle section of sling 2 is provided with a ring buckle, and the ring buckle stretches out of the sling hole 10.

After assembling according to the above structure, all the lifting points can bear all the weight under force, which can meet the requirements of various actions. The 16 lifting points on one side can also bear all the weight under force, and the parts can be hung vertically. Considering the wind resistance outdoors The influence of the load of the spreader; the bearing capacity of the 16 lifting points has greatly exceeded the weight of the workpiece itself, so that there is enough safety margin, and there are quite a few 4 lifting points in the flat state of the workpiece, which can make the workpiece The lifting height of the part is within 10 meters; secondly, the spreader device cannot cause local stress concentration on the sandwich structure, causing damage or damage to the part structure, and the spreader itself should have high reliability, safety and replaceability; secondly , The spreader device requires light weight and high strength. After assembly, it forms a whole with the workpiece, and there should be no obvious protrusions that affect the overall appearance; changes in outdoor temperature and humidity and rain erosion have no effect on the safety of the spreader.

Embodiment two

For large screens, billboards, and large projection screens, set the position and quantity of lifting points according to their actual size and specific weight. After drawing the position line, assemble the following lifting device structures as required.

There is a sling hole at the center of the top of the FRP U-shaped card 1, and a stainless steel reinforcement 10 is arranged on the sling hole. Each fixing hole is provided with a butterfly washer 5 and a strong screw 6. There are 5 combined holes evenly opened on the side of the U-shaped card. The combined holes are equipped with semi-round head bolts 4. There is a gasket on the upper and lower surfaces of the U-shaped card 1. The surface gasket 3 and the lower surface gasket 4; there is a spring washer 7 outside the lower surface gasket 4; the wooden core 9 is placed in the inner mold of the U-shaped card 1, and a Sling 2, the middle section of sling 2 is provided with a ring buckle, and the ring buckle stretches out of the sling hole 10.

After being assembled according to the above-mentioned structure, the overall appearance has no protrusions, no obstacles, and is clean and tidy. Due to the high bearing capacity of a single spreader device, appropriately increasing the number of spreaders can greatly increase the safety margin and have higher reliability.

Claims (3)

1. A U-shaped hanger for super-sized plastic honeycomb structure parts, it is characterized in that the central position of the glass fiber reinforced plastic U-shaped card (1) top has a sling hole, and the sling hole position is provided with a stainless steel reinforcing device (10), U The length of the type card (1) is 200-500mm, and there are two fixing holes on both sides of the sling hole, and each fixing hole is provided with a butterfly washer (5) and a strong screw (6), which are perpendicular to the surface of the sling hole There are 5 combination holes evenly, and the combination holes are equipped with semi-round head bolts (4), the upper and lower surfaces of the U-shaped card (1) have a gasket (3), and there is a spring washer under the gasket on the lower surface of the U-shaped card (7); The wooden core (9) is placed in the inner type of the U-shaped card (1), and a suspender (2) is provided between the wooden core (9) and the U-shaped card (1), and the middle section of the suspender (2) is provided with There is a ring buckle, and the ring buckle protrudes from the stainless steel reinforcement hole (10). 2. The ultra-large size plastic honeycomb structure U-shaped hanger according to claim 1 is characterized in that, the described glass fiber reinforced plastic U-shaped clamp (1) is made of high-strength glass cloth prepreg on the mould, and is heated. , pressurized, and solidified, and the stainless steel reinforcement (10) is co-solidified with the U-shaped card (1) into one body during the molding process. 3. The U-shaped hanger for super-large plastic honeycomb structure parts according to claim 1, wherein the material, length, width and thickness of the hanger are determined according to the thickness, size and weight of the suspended object.

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