PPVC modular construction lifting appliance and lifting process thereof

Abstract

The invention provides a PPVC modular construction lifting appliance and a lifting method thereof.The lifting appliance is used for lifting a prefabricated modular structure and comprises a lifting frame connected with lifting equipment; the hoisting mechanisms are located below the hoisting frame, the hoisting mechanisms are connected with the hoisting frame through adjusting mechanisms, and the adjusting mechanisms adjust the heights of the hoisting mechanisms through sliding of pulleys so that the hoisting mechanisms can be close to or away from the modular structures located below the hoisting frame; a plurality of hoisting mechanisms form a hoisting area, a leveling mechanism is arranged on the outer side of the hoisting area, and during hoisting of the hoisting area, the leveling mechanism acts, so that the whole hoisting is in a balanced state.

Description

Technical Field

[0001] The invention relates to the technical field of modular construction, in particular to a PPVC modular construction hoist and a hoisting process thereof. Background Art

[0002] Traditional construction methods have problems such as large on-site workload, long construction period, and great influence of environmental factors such as weather. In order to shorten the construction period of construction projects, the emergence of PPVC technology prefabricated most of the building structure in the factory and then transported to the site for assembly, greatly reducing the time and workload of on-site construction. As a device specially used for hoisting PPVC modules, the PPVC balance crane can quickly and accurately hoist the prefabricated modules to the designated location, providing strong support for the efficient implementation of PPVC technology. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a modular construction hoist and a hoisting method thereof, so that the hoisting is simpler and the tolerance strength is greater.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows: PPVC modular construction hoist, used for hoisting prefabricated modular structures, including: Hanger connected to the lifting equipment; A plurality of hoisting mechanisms located below the hanger, the hoisting mechanisms being connected to the hanger through adjustment mechanisms, the adjustment mechanisms utilizing the sliding motion of pulleys to adjust the height of the hoisting mechanisms so as to make them close to or away from the modular structure made of PPVC technology located below the hanger; A plurality of hoisting mechanisms form a hoisting area, and a leveling mechanism is arranged outside the hoisting area. During hoisting in the hoisting area, the leveling mechanism works to make the entire hoisting in a balanced state.

[0005] Furthermore, there are a plurality of pulleys, the connecting member passes through the plurality of pulleys, the hoisting mechanism is connected to the connecting member, and pulleys are arranged on both sides of the hoisting mechanism.

[0006] Furthermore, the connecting member passes through the through hole, so that the hanging mechanism on the connecting member is suspended in the air.

[0007] Furthermore, a plurality of the pulleys form the adjustment mechanism of a double layer of pulleys close to the hanger and away from the hanger.

[0008] Furthermore, in the double-layer pulley, the upper pulley and the lower pulley are staggered, and the hoisting mechanism is arranged close to the lower pulley.

[0009] Further, the upper pulley forms a fixed pulley, the lower pulley forms a movable pulley, and a fixing device is provided on the fixed pulley side of the end portion.

[0010] Furthermore, a plurality of electric hoists are arranged on both sides of the hanger, and the plurality of electric hoists form a leveling mechanism on both sides of the hanger.

[0011] On the other hand, the hoisting process of the modular spreader includes the following steps: S1) Assembly of the lifting mechanism and the hanger in the lifting device; S2) Assembly of prefabricated modular structures and lifting mechanisms; S3) adjusting the pulley so that the prefabricated modular structure is connected to the lifting mechanism at a set height; S4) Use the lifting equipment to lift the connected hanger to complete the lifting of the prefabricated modular structure.

[0012] Furthermore, the pulley is adjusted by adjusting the connecting piece so that the connecting piece on the pulley is in a tensioned state.

[0013] Furthermore, it also includes leveling. Specifically, when the modular structure is an asymmetric structure, a counterweight is added to the side with lighter force through an electric hoist so that the forces on both ends of the hanger are equal.

[0014] The present invention has the following beneficial effects: In the present invention, the pulley is used to adjust the height of the sling, especially in high-altitude operations, there is no need to build too many structures, and the hoisting of the bottom modular structure is completed directly through the sling.

[0015] In the present invention, the modular structure adopts PPVC technology, and the prefabricated and pre-decorated box modules are processed in the factory. After the structure and decoration are completed and an independent module is formed, the construction technology is hoisted on site. At this time, the modular structure has a certain volume and weight. When hoisting, it is necessary to fully consider the balance on both sides, etc., and the cooperation of double pulleys, etc. makes it easy to level and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a modular sling provided by the present invention; Figure 2 A flow chart of modular sling installation provided by the present invention; In the figure: 1. Hanger; 2. Lifting mechanism; 3. Adjustment mechanism; 31. Pulley; 32. Connecting piece; 4. Leveling mechanism; 5. Fixed pulley; 6. Movable pulley; 7. Isolation piece. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0018] First, the modular spreader in this embodiment is mainly introduced.

[0019] Refer to the attached Figure 1 As shown, the PPVC modular hanger in this embodiment includes a hanger 1 connected to the lifting equipment; in this embodiment, the hanger 1 is composed of a frame, or a steel plate, etc., and then hanging points are arranged on at least two sides of the hanger 1, and the hanger 1 is lifted by a lifting rope, a lifting point, and a crane.

[0020] Below the hanger 1, a number of hoisting mechanisms 2 are provided, wherein the hoisting mechanisms may be hoisting rings, etc., for matching with the modular structure made by the PVVC technology and hoisting it.

[0021] Before the hoisting is performed, the hoisting mechanism 2 can be connected to the lower surface of the hanger 1 through the adjustment mechanism 3 , and the relative height of the hoisting mechanism 2 on the hanger 1 can be adjusted through the adjustment mechanism 3 .

[0022] In this embodiment, the adjustment mechanism 3 is specifically a modular structure prepared by the PPVC technology located below the hanger, which drives the entire adjustment mechanism 3 to move up and down mechanically by sliding along a plurality of pulleys 31 and a connecting member 32 on the pulley 31, thereby making the hanging mechanism 2 close to or away from the hanger; In this embodiment, a hoisting area is formed by a plurality of hoisting mechanisms 3, and a leveling mechanism 4 is arranged outside the hoisting area. During the hoisting in the hoisting area, the leveling mechanism 4 acts to make the entire hoisting in a balanced state. In this embodiment, for a symmetrical modular structure, the hanger 1 can be directly hoisted, but for an asymmetrical structure or a special-shaped structure, the force under the hanger 1 is not equal, and then it is necessary to increase the counterweight through a leveling device, so that the force under the hanger 1 is equal, and the entire modular device can be hoisted in a balanced state.

[0023] Specifically, in this embodiment, an electric hoist is used to form an adjustment mechanism. When one side is lighter and needs to be leveled with additional weight, some structures can be hoisted through the bottom of the electric hoist to make the forces on both sides equal, thereby completing the leveling effect.

[0024] With respect to the adjustment mechanism 3, in this embodiment, a plurality of pulleys 31 are selected to form a larger lifting range and area, and then a through hole 11 is provided at the bottom of the hanger 1 to facilitate installation of the pulley 31 so that it is suspended in the air.

[0025] In this embodiment, the pulley 31 is specifically divided into an upper pulley and a lower pulley, thereby forming a double-layer pulley structure under the hanger 1. Then, the lower pulley is not arranged at the position of the upper pulley corresponding to the lower pulley, but is staggered. A lower pulley is arranged between the two upper pulleys to facilitate adjustment of the tensioning force and the lifting and lowering of the lower pulley. At this time, an angle is formed between the upper and lower pulleys. This arrangement also enables better force distribution between the pulleys. For example, an angle is formed between three adjacent pulleys, and several downward and upward angles are equal, so that subsequent forces are easily dispersed.

[0026] In use, the upper pulley forms a fixed pulley 5, and the lower pulley forms a movable pulley 6, and then a fixing device is set at the fixed pulley 5 near the end, so that the redundant connectors can be fixed after the subsequent connection parts are adjusted. In this embodiment, when the formed hoisting area is 10m, but the length of the modular structure to be hoisted is only 6m, the end movable pulley can be raised to the same height as the fixed pulley, and then the movable pulley in the middle position moves, so that the hoisting area becomes 6m.

[0027] In this embodiment, the number of pulleys can be adjusted, and the number of movable pulleys and fixed pulleys is consistent to ensure the balance of the hanger 1 body. Then, when the modular structure becomes larger or smaller, the lifting area can be adjusted by adding or reducing pulleys.

[0028] In this embodiment, an isolator 7 is provided on the outer periphery of the hanger 1, and the isolator 7 is located outside the electric hoist, and the isolator 7 forms a leveling enclosure. Specifically, the isolator 7 is formed by the hanger 1 extending downward, and the isolator 7 can also form a supporting assembly. When the hanger 1 is stored, it is supported on the ground by the isolator 7.

[0029] In this embodiment, by setting the leveling mechanism 4, the entire sling has a wider application range and can also be used for asymmetric shapes to avoid structural imbalance problems. It can ensure that the prefabricated modular structure is in a parallel state and ensure installation accuracy.

[0030] The sling given in this embodiment will be subjected to an overload test before use to ensure its load-bearing capacity, and the lifting mechanism 2 is specifically a hook, and a hook release and unhooking measure can also be added to the hook, specifically, a baffle is added on the side so that the hook forms a closed structure to ensure lifting safety.

[0031] Secondly, refer to the attached Figure 2 As shown, in this embodiment, a hoisting process of a modular hoist is also disclosed, including the following steps: S1) Assembly of the lifting mechanism 2 and the hanger 1 in the lifting device; S2) assembly of the prefabricated modular structure and the lifting mechanism 2; S3) adjusting the pulley 31 so that the prefabricated modular structure is connected to the hoisting mechanism 2 at a set height; S4) The connected hanger 1 is lifted by the lifting equipment to complete the lifting of the prefabricated modular structure.

[0032] In this embodiment, the pulley is adjusted by adjusting the connecting member 32 so that the connecting member 32 on the pulley 31 is in a tensioned state. In this process, the connecting member 32 is moved and the movable pulley at the bottom is at a set height. The adjustment can also be made after connecting with the modular structure.

[0033] In the case of special-shaped structures, leveling is also included. Specifically, when the modular structure is an asymmetric structure, a counterweight is added to the lighter side through an electric hoist so that the forces on both ends of the hanger 1 are equal to ensure its stable lifting. In this embodiment, the hanger 1 can be formed by welding I-beams. Four buckle points are welded at four nodes of the hanger 1, and four hanging buckles are installed. The installation of the hanging buckles must comply with various national and industry standards. Strength and torque tests must be performed before installation to ensure that the strength of the hanging buckles can withstand the weight of the building module.

[0034] The hanger in this embodiment is light in weight and strong in strength. Before welding, the material strength test is required to select a suitable structure for welding. After welding, the structure test is required. Figure 1 ) In this embodiment, 20 roller skates 31 are installed at the lower part of the hanger 1, installed on both sides of the long side, 10 roller skates are installed on each side and installed in two layers for double roller skate hoisting, and a hook is installed on the lower side of the roller skates. At the same time, 6 electric hoists (i.e., leveling mechanisms 4) are installed under the hanger 1 on both sides of the lower part of the hanger, and the working frequencies of the electric hoists are the same so that balanced hoisting can be achieved.

[0035] The hoisting construction method in this embodiment is described in detail as follows; On-site survey: Conduct a detailed survey of the construction area to ensure the smooth progress of the lifting operation. Equipment preparation: Prepare sufficient PPVC modular construction hoists and related supporting equipment, such as cranes, screws, etc. Personnel arrangement: Arrange professional technicians and operators to carry out task allocation and safety training. Basic preparation: According to the results of the on-site survey, determine the installation location of the hoist and make basic preparations. Assemble the hoist: Assemble the various components of the PPVC modular construction hoist according to the design drawings and installation instructions. Fixing the hoist: Use a crane and other equipment to fix the hoist in the predetermined position to ensure the stability and safety of the hoist. Inspection before lifting: Carefully check the hoist and the hoisted object to ensure that there is no damage and safety hazards. Hoisting operation: Perform hoisting operations according to the site conditions and hoisting requirements. During the operation, ensure the control of hoisting speed and stability. Hoisting adjustment: During the hoisting process, adjust the height and direction of the hoist as needed to ensure accurate hoisting. Safety protection measures: During the construction process, safety regulations must be strictly observed and necessary safety protection measures must be taken, such as wearing safety helmets and using safety belts. Regular inspection: Regularly inspect the slings and the objects being hoisted to ensure that there is no damage or aging, and replace damaged parts in a timely manner. Emergency treatment: During the construction process, if an emergency occurs, the operation should be stopped immediately and emergency treatment measures should be taken to ensure the safety of personnel and equipment. It also includes the production and test verification of the sling: 1. Production: According to the optimized design plan, a sample of the PPVC modular construction sling is produced. 2. Test verification: The sample is strictly tested and verified, including load-bearing capacity test, durability test, safety performance test, etc., to ensure that it meets the design requirements and actual use requirements. Product improvement and finalization: According to the test verification results, the product is improved, including structural adjustment, material replacement, etc. After many improvements and verifications, the finalization plan of the product is finally determined. Regarding the production and marketing of the sling in this embodiment: 1) Production: Develop a production plan and process flow to ensure that the product can be mass-produced. 2) Market promotion: promote the product to the market and expand the user group through market research, publicity and promotion, etc. The hoist in this embodiment improves the process of modular structure construction and hoisting.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. PPVC modular construction hoist, used for hoisting prefabricated modular structures, characterized by: include, Hanger connected to the lifting equipment; A plurality of hoisting mechanisms located below the hanger, the hoisting mechanisms being connected to the hanger through adjustment mechanisms, the adjustment mechanisms utilizing the sliding motion of pulleys to adjust the height of the hoisting mechanisms so as to make them close to or away from the modular structure made of PPVC technology located below the hanger; A plurality of hoisting mechanisms form a hoisting area, and a leveling mechanism is arranged outside the hoisting area. During hoisting in the hoisting area, the leveling mechanism works to make the entire hoisting in a balanced state.

2. The PPVC modular construction hanger according to claim 1, characterized in that: There are a plurality of pulleys, and the connecting piece passes around the plurality of pulleys. The hoisting mechanism is connected to the connecting piece, and pulleys are arranged on both sides of the hoisting mechanism.

3. The PPVC modular construction hanger according to claim 2, characterized in that: The connecting member passes through the through hole, so that the hanging mechanism on the connecting member is suspended in the air.

4. The PPVC modular construction hanger according to claim 2, characterized in that: A plurality of said pulleys form said adjustment mechanism of a double layer of pulleys close to the hanger and away from the hanger.

5. The PPVC modular construction hanger according to claim 4, characterized in that: In the double-layer pulley, the upper pulley and the lower pulley are staggered, and the hoisting mechanism is arranged close to the lower pulley.

6. The PPVC modular construction hanger according to claim 5, characterized in that: The upper pulley forms a fixed pulley, the lower pulley forms a movable pulley, and a fixing device is provided on the fixed pulley side of the end portion.

7. The PPVC modular construction hanger according to claim 1, characterized in that: A plurality of electric hoists are arranged on both sides of the hanger, and the plurality of electric hoists form a leveling mechanism on both sides of the hanger.

8. The hoisting process of the PPVC modular construction hoist according to any one of claims 1 to 7, characterized in that: The following steps are included: S1) Assembly of the lifting mechanism and the hanger in the sling; S2) Assembly of prefabricated modular structures and lifting mechanisms; S3) adjusting the pulley so that the prefabricated modular structure is connected to the lifting mechanism at a set height; S4) Use the lifting equipment to lift the connected hanger to complete the lifting of the prefabricated modular structure.

9. The hoisting process of the PPVC modular construction hoist according to claim 8 is characterized in that: The pulley is adjusted specifically by adjusting the connecting piece so that the connecting piece on the pulley is in a tensioned state.

10. The hoisting process of the PPVC modular construction hoist according to claim 9 is characterized in that: It also includes leveling. Specifically, when the modular structure is an asymmetric structure, a counterweight is added to the lighter side through an electric hoist so that the forces on both ends of the hanger are equal.

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