Net rack component hoisting in-place device and construction method thereof

Abstract

The invention provides a net rack part hoisting in-place device and a construction method thereof, the device comprises a base, a cantilever, a supporting arm and a hoisting mechanism, the bottom of the base is rotatably provided with universal wheels, and the bottom of the base is detachably provided with a clamping type fixing clamp; the bottom end of the cantilever is fixedly connected to one end of the base, and the top end inclines towards the front of the other end of the base; the bottom ends of the supporting arms are connected to the base, and the top ends of the supporting arms are close to the fixed pulley; the hoisting mechanism comprises a winch and a steel wire rope. By arranging the base, the cantilever, the supporting arm and the hoisting mechanism, the whole device can be fixed to the position close to the to-be-installed net rack component, hoisting in-place operation of the net rack component from bottom to top is achieved, the whole structure is simple, use is convenient, the installation efficiency of the net rack component is improved, and the construction cost is effectively reduced; and meanwhile, the construction safety is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of grid construction, and in particular relates to a grid component hoisting and positioning device and a construction method thereof. Background Art

[0002] In projects such as stadiums, exhibition centers, and airport terminals that require a large span, lightweight, and high strength, a roof structure that combines grids and concrete is often used, in which the concrete structure is used to support or partially reinforce the grid structure, and the grid structure is often set in the middle of the concrete structure to achieve wide coverage. However, during the construction process of this structure, it is usually necessary to first cast the concrete support structure and then install the grid structure; the grid structure is usually composed of single rods on the ground to form components, and then hoisted into the air to assemble into frames. In the existing technology, large cranes or truck cranes are usually used for lifting, but the use of large cranes will lead to a significant increase in costs, and the use of truck cranes requires an open site space and the ability to be close to the work location. It is not applicable when the surrounding concrete structures are difficult to cross or the space is small. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a truss component hoisting and positioning device and a construction method thereof, which reduces the requirements for space and the surrounding environment of the truss, improves the installation efficiency of the truss components, and effectively reduces construction costs.

[0004] The technical solution adopted in the present invention is:

[0005] A device for hoisting and placing grid components, comprising:

[0006] A base, the bottom of which is rotatably provided with universal wheels and detachably provided with a clip-type fixing card;

[0007] A cantilever, the bottom end of the cantilever is fixedly connected to one end of the base, the top end is inclined toward the front of the other end of the base, and is provided with a fixed pulley;

[0008] Support arms, the support arms are symmetrically arranged on both sides of the cantilever, the bottom ends of the support arms are connected to the base, and the top ends are arranged near the fixed pulley;

[0009] The hoisting mechanism includes a winch and a steel wire rope. The winch is arranged on the base. The steel wire rope is led out from the drum of the winch, passes through the fixed pulley, and a hook is provided at the end thereof.

[0010] Furthermore, the cantilever is aligned with a center line of the base.

[0011] Furthermore, a plurality of limiting wheels are provided in the length direction of the cantilever, and the distances between the wheel grooves of the limiting wheels and the cantilever are the same, so that the steel wire rope passes through the limiting wheels in sequence along a direction parallel to the cantilever.

[0012] Furthermore, the fixed pulley and the limiting wheel are both arranged on the side of the cantilever facing the base through a fixing frame, and the fixing frame is provided with a limiting hole for accommodating the steel wire rope to pass through.

[0013] Furthermore, the base includes at least two longitudinal rods and several transverse rods vertically connected to the longitudinal rods, the transverse rods include two fixing rods respectively arranged near the two ends of the longitudinal rods, and the universal wheels and the clip-type fixing cards are symmetrically arranged on the fixing rods.

[0014] Furthermore, both ends of the fixing rod protrude from the longitudinal rod, the clamping fixing card is arranged at the protruding portion of the transverse rod, and the universal wheel is arranged at the relatively inner side of the clamping fixing card.

[0015] Furthermore, the length of the fixing rod and the distance between the two fixing rods are matched with the distance between the ball nodes of the grid structure.

[0016] Furthermore, a plurality of groups of support rods are provided between the cantilever and the base, and the support rods and the cross bars form a triangular support structure.

[0017] Furthermore, a plurality of groups of support rods are provided between the cantilever and the support arm, a plurality of connecting rods are provided between the support arms, and the support rods and the connecting rods form a triangular support structure.

[0018] A method for constructing a grid component, using the grid component hoisting device described above, comprises the following steps:

[0019] The installation of the grid structure close to the concrete structure was completed using a truck crane;

[0020] Assembling the grid component hoisting device on the ground and hoisting it above the installed grid structure using a truck crane;

[0021] Installing the clip-type fixing card at the ball node position of the grid structure;

[0022] Adjust the position of the grid component hoisting device and lock the ball node and the fixing rod with the clip-type fixing card;

[0023] Assembling grid components on the ground and hoisting them into place using a grid component hoisting device;

[0024] Loosen the clamp-type fixing card and move the grid component hoisting device to the next construction position;

[0025] The ball node and the fixing rod are locked again by the clamp-type fixing card to perform the hoisting operation.

[0026] The advantages and positive effects of the present invention are:

[0027] (1) By setting up a base, a cantilever, a support arm and a lifting mechanism, the entire device can be fixed at a position near the location where the grid components are to be installed, so that the grid components can be lifted and placed from bottom to top, and then the entire device can be moved to the next location to be installed, so that all grid components within the installation range can be lifted and placed step by step. The overall structure is simple and easy to use, which reduces the requirements for space and the surrounding environment of the grid, improves the installation efficiency of the grid components, effectively reduces the construction cost, and ensures construction safety.

[0028] (2) By setting a limiting wheel along the length direction of the cantilever, the position of the wire rope can be effectively limited and guided to ensure the stability of the wire rope position, which is conducive to the safe and accurate lifting of the grid components.

[0029] (3) By arranging support rods between the cantilever and the base, and between the cantilever and the support arm, a stable triangular support structure is formed, which enhances the overall rigidity and anti-deformation ability of the device, effectively disperses the load borne by the cantilever, and improves the stability and reliability of the structure.

[0030] (4) By setting up a clip-type fixing card, the entire device can be stably fixed to the concrete structure or grid structure connection requirement, ensuring effective load transfer and improving the stability and safety of the lifting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0032] In the picture:

[0033] 1. Base; 11. Longitudinal rod; 12. Fixed rod; 13. Universal wheel; 14. Clip-type fixing card; 2. Cantilever; 21. Fixed pulley; 22. Limiting wheel; 3. Lifting mechanism; 4. Support arm; 5. Support rod. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0035] like Figure 1As shown, the first aspect of the present invention provides a device for hoisting truss components into place, comprising a base 1, a cantilever 2, a support arm 4, and a hoisting mechanism 3. This device is used in roof structures combining trusses and concrete. When the truss structure is located in the middle of the concrete structure, the truss components are hoisted into place, achieving efficient installation of the truss structure, effectively saving construction time, ensuring construction safety, and reducing construction costs. Each component is described in detail below.

[0036] like Figure 1 As shown, the embodiment of the present application provides a device for hoisting and placing grid components, comprising:

[0037] Base 1, the bottom of the base 1 is rotatably provided with a universal wheel 13 and a detachable clip-type fixing card 14;

[0038] A cantilever 2, the bottom end of the cantilever 2 is fixedly connected to one end of the base 1, the top end is inclined toward the front of the other end of the base 1, and is provided with a fixed pulley 21;

[0039] Support arms 4 are symmetrically arranged on both sides of the cantilever 2, with their bottom ends connected to the base 1 and their top ends arranged near the fixed pulley 21;

[0040] The hoisting mechanism 3 includes a winch and a wire rope. The winch is arranged on the base 1. The wire rope is led out from the drum of the winch, passes through the fixed pulley 21, and a hook is provided at the end thereof.

[0041] The base 1 is used to connect with a concrete structure or a previously installed grid structure to provide a stable foundation for the installation of the entire device; the cantilever 2 is tilted, and one end of the fixed pulley 21 protrudes from the range of the base 1. On the one hand, it provides an installation foundation for the wire rope of the lifting mechanism 3, so that the hoisted object can avoid the base 1 and be lifted from bottom to top; on the other hand, the cantilever 2 plays the role of bearing the tensile load transmitted by the hook when lifting the hoisted object; the support arm 4 is connected to the base 1 to form a triangular support structure, which is used to support the cantilever 2 to prevent the cantilever 2 from being deformed or damaged under the tensile load; the lifting mechanism 3 is used to lift the hoisted object; in the embodiment of the present application, the hoisted object is a grid The component, the intended installation position of which is close to the completed concrete structure and grid structure, is hoisted into place by arranging the grid component hoisting device proposed in the present application near the intended installation position, and suspending one end of the cantilever 2 provided with the fixed pulley 21 in the air, so that the grid component can be hoisted from bottom to top, so that it can be quickly hoisted into place, and it is convenient for the operator to install the grid component in the set position; then the entire device can be moved to the next intended installation position through the universal wheel 13, and finally the grid components within the installation range of the entire grid are hoisted into place; the overall structure is simple and easy to use, which improves the installation efficiency of the grid components, effectively reduces the construction cost, and ensures construction safety.

[0042] In the above embodiment, the cantilever 2 and support arm 4 have a certain degree of rigidity. The angle at which the cantilever 2 tilts relative to the base 1 and the length of the cantilever 2 protruding from the base 1 are specifically designed based on the weight and shape of the grid components to prevent collision with the base 1 when the grid components move from bottom to top. The length and tilt angle of the support arm 4 are set after comprehensive consideration of the length and tilt angle of the cantilever 2 and the weight of the grid components, and can provide sufficient support for the cantilever 2, thereby ensuring the stability and reliability of the entire structure. The cantilever 2 suspends the grid components in mid-air through its strength and tilt angle, and the support arm 4 provides the necessary support, reducing the burden on the cantilever 2 and ensuring that the grid components can move safely and smoothly according to the designed path without displacement or collision. Preferably, the cantilever 2 and support arm 4 are both made of steel sections and welded together.

[0043] Furthermore, in the embodiment of the present application, the cantilever 2 is aligned with the center line of the base 1. Since the support arm 4 is symmetrically arranged relative to the cantilever 2, the support arm 4 is also symmetrical relative to the base 1. The base 1, as a supporting component, is responsible for the stability and load-bearing capacity of the overall structure, ensuring that the cantilever 2 and other components are firmly fixed thereon. The support arm 4 is mainly used to improve the load-bearing capacity of the cantilever 2. It is symmetrically arranged relative to the cantilever 2, which enhances the balance of the cantilever 2 and the uniformity of force on the left and right sides. By aligning the cantilever 2 with the center line of the base 1, the center of gravity of the entire device is made more stable, reducing the risk of tilting due to asymmetric distribution, and making the device safer and more reliable during operation.

[0044] Furthermore, in the embodiment of the present application, a plurality of limiting wheels 22 are provided along the length direction of the cantilever 2, and the distance between the wheel grooves of the limiting wheels 22 and the cantilever 2 is the same, so that the wire rope passes through the limiting wheels 22 in sequence in a direction parallel to the cantilever 2, and finally passes around the fixed pulley 21 at the end of the cantilever 2 to perform the hoisting operation of the grid component. The above-mentioned limiting wheels 22 are used to limit and guide the position of the wire rope. Preferably, the limiting wheels 22 are arranged at equal intervals along the length direction of the cantilever 2 to ensure that the wire rope can pass through each limiting wheel 22 in sequence in a direction parallel to the cantilever 2. The cantilever 2 serves as a supporting structure, providing an installation base for the limiting wheels 22 and bearing the load during the hoisting process; the wheel grooves of the limiting wheels 22 can ensure the stability of the wire rope position, which is conducive to adjusting the tension and direction of the wire rope, and realizing safe and accurate hoisting of the grid component.

[0045] Furthermore, in the embodiment of the present application, the fixed pulley 21 and the limiting wheel 22 are both arranged on the side of the cantilever 2 facing the base 1 through a fixed frame, and the fixed frame is provided with a limiting hole for accommodating the wire rope to pass through. The function of the fixed pulley 21 is to change the traction direction of the wire rope so that the wire rope drives the grid component from bottom to top under the drive of the winch. The function of the limiting wheel 22 is to limit the movement range of the wire rope through the limiting hole installed on the fixed frame, ensuring that the wire rope will not deviate from the preset path during the hoisting process, thereby ensuring the safety and accuracy of the hoisting operation, and at the same time making the traction force evenly distributed along the length direction of the cantilever 2. By providing the limiting hole on the fixed frame, a through channel can be provided for the wire rope to ensure that it can pass through the limiting hole smoothly, so that the force applied to the cantilever 2 during the hoisting process is more balanced, thereby improving the safety and stability of the operation.

[0046] Furthermore, in an embodiment of the present application, the base 1 includes at least two longitudinal rods 11 and a plurality of transverse rods perpendicularly connected to the longitudinal rods 11, wherein the transverse rods include two fixed rods 12 respectively arranged near the two ends of the longitudinal rods 11, and the universal wheels 13 and the clamp-type fixing clamps 14 are symmetrically arranged on the fixed rods 12. The longitudinal rods 11 and transverse rods are arranged on the same plane, so that the base 1 forms a frame structure. While ensuring that it has sufficient rigidity, deformation resistance and bearing capacity, the overall weight of the base 1 is reduced, so that the base 1 can be moved as needed to allow the entire device to reach different construction locations; the universal wheels 13 are symmetrically arranged on the fixed rods 12, making the device more stable during movement, reducing vibration and swinging, and improving the flexibility of movement. The clamp-type fixing clamps 14 are used to fix the entire device to a previously constructed concrete structure or grid structure, ensuring the accurate positioning of the entire device. By arranging them symmetrically, the balance and stability of the entire device during operation can be improved.

[0047] Furthermore, in the embodiment of the present application, both ends of the fixing rod 12 protrude from the longitudinal rod 11, the clamp-type fixing clips 14 are disposed on the protruding portion of the crossbar, and the universal wheels 13 are disposed on the relatively inner side of the clamp-type fixing clips 14. By arranging the clamp-type fixing clips 14 on the protruding portion of the crossbar, the clamp-type fixing clips 14 can be moved within the range of the protruding portion as needed, so that the distance between the two clamp-type fixing clips 14 meets the requirements for connection to the concrete structure or grid structure, ensuring effective load transfer and improving the stability of the overall device fixation; by arranging the universal wheels 13 on the relatively inner side of the clamp-type fixing clips 14, the universal wheels 13 can be more easily coordinated, thereby improving the mobility of the device.

[0048] Furthermore, in the embodiment of the present application, the length of the fixing rods 12 and the distance between the two fixing rods 12 are both matched to the distance between the ball nodes of the grid structure. In this embodiment, the grid structure includes the ball nodes and the steel members connected to the ball nodes. When in use, the present application can connect the fixing rods 12 to the ball nodes of the grid structure by adjusting the position of the clip-type fixing clamps 14 on the fixing rods 12, so that the fixing rods 12 are stably fixed to the ball nodes, thereby making the entire device more stable and improving the safety of the lifting operation.

[0049] In the embodiment of the present application, the clip-type fixing clip 14 is detachably mounted on the fixing rod 12 and can be loosened or locked, so that the fixing rod 12 can be fixed to the ball joint via the clip-type fixing clip 14, and the fixing rod 12 can also be moved when the clip-type fixing clip 14 is loosened. Preferably, the clip-type fixing clip 14 is a U-shaped clip or other structure capable of clamping the fixing rod 12 and the ball joint, which is not limited here.

[0050] In the above embodiment, the length of the fixing rod 12 is greater than the distance between two adjacent ball nodes, and the distance between the two outermost longitudinal rods 11 of the base 1 is less than the distance between two adjacent ball nodes; the distance between the two fixing rods 12 can be the same as the distance between two adjacent ball nodes in the other direction, or the same as the distance between two non-adjacent ball nodes in the other direction, and there is no limitation here.

[0051] Furthermore, in the embodiment of the present application, several groups of support rods 5 are provided between the cantilever 2 and the base 1. The support rods 5 and the crossbars form a triangular support structure. The support rods 5 support the cantilever 2. By forming a stable triangular support structure with the crossbars, the support rods 5 enhance the overall rigidity and deformation resistance of the cantilever 2, effectively dispersing the load borne by the cantilever 2, reducing single-point stress, and improving the stability and reliability of the structure. The triangular support structure effectively transfers the load to the base 1, ensuring the stability of the cantilever 2 in various operating conditions, thereby achieving safe and efficient load-bearing and fixing functions.

[0052] Furthermore, in the embodiment of the present application, a plurality of groups of support rods 5 are provided between the cantilever 2 and the support arm 4, and a plurality of connecting rods are provided between the support arms 4. The support rods 5 and the connecting rods form a triangular support structure. The support rods 5 also support the cantilever 2. By forming a triangular support structure with the connecting rods, the rigidity and deformation resistance of the overall structure formed by the support arm 4 and the cantilever 2 are improved. By effectively transferring the load to the support arm 4 and then to the base 1 through the support rods 5, the stability and safety of the cantilever 2 are further improved.

[0053] The second aspect of the present application further provides a method for constructing a grid component, using the grid component hoisting device as described above, comprising the following steps:

[0054] S1. Use a truck crane to complete the installation of the grid structure close to the concrete structure;

[0055] S2. Assemble the hoisting device for the grid components on the ground and hoist them above the installed grid structure using a truck crane;

[0056] S3, installing the clip-type fixing card 14 at the ball node position of the grid structure;

[0057] S4, adjust the position of the hoisting device for the grid components and lock the ball nodes and the fixing rods 12 by means of the clip-type fixing clamps 14;

[0058] S5. Assembling the grid components on the ground and performing hoisting operations using the grid component hoisting and positioning device;

[0059] S6, release the clamping clamp 14, and move the hoisting device of the mobile grid component to the next construction position;

[0060] S7. Lock the ball node and the fixing rod 12 again by the clamping fixing card 14 and perform the hoisting operation.

[0061] In a specific embodiment of the present application, the above-mentioned device and method are used to construct a roof truss structure of a cafeteria building. The truss structure is surrounded by a concrete roof structure and has been completed in advance. The total area of the truss structure is 2,000 square meters. The overall weight of the truss component hoisting and positioning device used is 300 kg. The installation of the entire truss structure was completed in only 10 days, and no safety accidents or component damage occurred during the construction process.

[0062] The advantages and positive effects of the present invention are:

[0063] (1) By setting the base 1, cantilever 2, support arm 4 and lifting mechanism 3, the whole device can be fixed at the position near the grid component to be installed, and the grid component can be lifted and placed from bottom to top. Then the whole device is moved to the next intended installation position, and the grid components within the installation range of the whole grid are gradually lifted and placed. The overall structure is simple and easy to use, which reduces the requirements for space and the surrounding environment of the grid, improves the installation efficiency of the grid components, effectively reduces the construction cost, and ensures construction safety.

[0064] (2) By arranging the limiting wheel 22 along the length direction of the cantilever 2, the position of the wire rope can be effectively limited and guided, ensuring the stability of the position of the wire rope, which is conducive to the safe and accurate lifting of the grid components.

[0065] (3) By arranging support rods 5 between the cantilever 2 and the base 1 and between the cantilever 2 and the support arm 4, a stable triangular support structure is formed, which enhances the overall rigidity and anti-deformation ability of the device, effectively disperses the load borne by the cantilever 2, and improves the stability and reliability of the structure.

[0066] (4) By providing a clamp-type fixing card 14, the entire device can be stably fixed to the concrete structure or grid structure connection requirement, ensuring effective load transfer and improving the stability and safety of the lifting operation.

[0067] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A device for hoisting and placing grid components, characterized in that: include: A base, the bottom of which is rotatably provided with universal wheels and detachably provided with a clip-type fixing card; A cantilever, the bottom end of the cantilever is fixedly connected to one end of the base, the top end is inclined toward the front of the other end of the base, and is provided with a fixed pulley; Support arms, the support arms are symmetrically arranged on both sides of the cantilever, the bottom ends of the support arms are connected to the base, and the top ends are arranged near the fixed pulley; The hoisting mechanism includes a winch and a steel wire rope. The winch is arranged on the base. The steel wire rope is led out from the drum of the winch, passes through the fixed pulley, and a hook is provided at the end thereof.

2. The grid component hoisting and positioning device according to claim 1, characterized in that: The cantilever is aligned with a centerline of the base.

3. The grid component hoisting and positioning device according to claim 2, characterized in that: A plurality of limiting wheels are provided in the length direction of the cantilever, and the distances between the wheel grooves of the limiting wheels and the cantilever are the same, so that the steel wire rope passes through the limiting wheels in sequence along a direction parallel to the cantilever.

4. The grid component hoisting and positioning device according to claim 3, characterized in that: The fixed pulley and the limiting wheel are both arranged on a side of the cantilever facing the base through a fixing frame, and the fixing frame is provided with a limiting hole for accommodating the steel wire rope to pass through.

5. The grid component hoisting and positioning device according to any one of claims 1 to 4, characterized in that: The base includes at least two longitudinal bars and a plurality of transverse bars vertically connected to the longitudinal bars. The transverse bars include two fixing bars respectively arranged near the two ends of the longitudinal bars. The universal wheels and the clip-type fixing cards are symmetrically arranged on the fixing bars.

6. The grid component hoisting and positioning device according to claim 5, characterized in that: Both ends of the fixing rod protrude from the longitudinal rod, the clamping fixing card is arranged on the protruding portion of the transverse rod, and the universal wheel is arranged on the opposite inner side of the clamping fixing card.

7. The grid component hoisting and positioning device according to claim 5, characterized in that: The length of the fixing rod and the distance between the two fixing rods are matched with the distance between the ball nodes of the grid structure.

8. The grid component hoisting and positioning device according to claim 6 or 7, characterized in that: A plurality of support rods are provided between the cantilever and the base, and the support rods and the cross rods form a triangular support structure.

9. The grid component hoisting and positioning device according to claim 8, characterized in that: A plurality of groups of support rods are provided between the cantilever and the support arm, a plurality of connecting rods are provided between the support arms, and the support rods and the connecting rods form a triangular support structure.

10. A method for constructing a grid component, characterized in that: The device for hoisting and placing the grid components according to any one of claims 1 to 9 comprises the following steps: The installation of the grid structure close to the concrete structure was completed using a truck crane; Assembling the grid component hoisting device on the ground and hoisting it above the installed grid structure using a truck crane; Installing the clip-type fixing card at the ball node position of the grid structure; Adjust the position of the grid component hoisting device and lock the ball node and the fixing rod with the clip-type fixing card; Assembling grid components on the ground and hoisting them into place using a grid component hoisting device; Loosen the clamp-type fixing card and move the grid component hoisting device to the next construction position; The ball node and the fixing rod are locked again by the clamp-type fixing card to perform the hoisting operation.

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