CN113148857A

CN113148857A - Movable type quick-dismantling hoisting steel truss

Info

Publication number: CN113148857A
Application number: CN202110457451.8A
Authority: CN
Inventors: 宁升华; 黄瑞华; 袁思翰; 代民利; 何斌
Original assignee: Hunan Construction Engineering Group Co Ltd
Current assignee: Hunan Construction Engineering Group Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-07-23

Abstract

The invention discloses a movable quick-detachable hoisting steel truss, which relates to the technical field of hoisting equipment in a building house, wherein the hoisting steel truss structure consists of a main body structure and an auxiliary part, the main body structure is a double-truss portal truss structure and comprises two opposite portal steel columns, a double-truss connected between the two portal steel columns and two opposite horizontal cross beams in the double-truss; the bottom of the door type steel column is provided with a detachable universal wheel assembly, and the bottom end of the detachable universal wheel assembly is provided with a liftable bottom support; the supporting facilities comprise two directional pulley blocks arranged at the lower ends of the two trusses at intervals, a hanging basket arranged on the horizontal beam, a winch arranged at the lower part of the column foot of the door type steel column and an overhanging operation platform arranged on the side face of the two trusses. The invention can complete the installation of the steel truss hoisting equipment on site, and avoids the collision between the member and the building by adjusting the hoisting direction of the member in the hoisting process.

Description

Movable type quick-dismantling hoisting steel truss

Technical Field

The invention belongs to the technical field of hoisting equipment in a building house, and particularly relates to a movable quick-dismantling hoisting steel truss.

Background

In recent years, along with the rapid development of economy, people's life is remarkably improved, the urban construction is accelerated day by day, and the requirements of people on the level of urban civil buildings are higher and higher, so that the construction strength of large public buildings such as large commercial squares, hospitals, schools, hotels, multifunctional theaters and the like in cities is higher and higher. Because the large public building occupies a wide area and has a high building height, the interior of the building is generally provided with structures such as an atrium, a corridor, an upper daylighting roof and the like, and the large public building has high requirements on the interior construction of the building, particularly the hoisting construction. Because the steel structure material is even lighter, the elastoplasticity is better, and the preparation is convenient, and installation cycle is short, so extensively be applicable to the inside steel construction hoist and mount project of large-span ceiling building.

The hoisting equipment has large distance from the outside of a building, hoisting span and lifting capacity value can not meet the steel structure hoisting standard requirement, and a large crane and a tower crane cannot be used for hoisting inside a building. Due to the diversity of the shapes of the roofs of large buildings, the complexity of hoisting components and the limitation of sites, the components cannot slide in one direction during hoisting, time and labor are consumed when hoisting points are frequently moved, and interference and collision between the whole components and the buildings are easily caused. Meanwhile, when the crane and the tower crane are in construction operation, the risks of collapse, instability, component falling and the like exist, great potential safety hazards are caused to operating personnel below the crane, and secondly, the hoisting operation is greatly influenced by weather conditions, the process construction is complicated, and the production cost is high. Therefore, the problem of steel structure hoisting is a difficult problem to be solved urgently in the internal installation of the current large and medium-sized buildings.

Disclosure of Invention

The invention aims to provide a movable quick-detachable hoisting steel truss which is suitable for large buildings with large-span openings such as patios and atrium in the buildings and solves the technical problems of poor site adaptability and complex process construction of the traditional steel structure.

In order to solve the technical problems, the specific technical scheme of the invention is as follows:

a movable quick-release hoisting steel truss structure comprises a main body structure and an auxiliary part, wherein the main body structure is a double-truss portal truss structure and comprises two portal steel columns arranged oppositely, a double-truss connected between the two portal steel columns and two horizontal cross beams arranged oppositely in the double-truss; the bottom of the door type steel column is provided with a detachable universal wheel assembly, and the bottom end of the detachable universal wheel assembly is provided with a liftable bottom support; the supporting facilities comprise two directional pulley blocks arranged at the lower ends of the two trusses at intervals, a hanging basket arranged on the horizontal beam, a winch arranged at the lower position of a column foot of the door type steel column and an overhanging operation platform arranged on the side face of the two trusses; the auxiliary part is mainly attached to the periphery of the main body structure to form a safe, reliable and efficient hoisting construction system; in order to ensure the stability of the hoisting truss structure, the double trusses and the steel door posts are made of rigid welding materials and are welded with the door posts to form a space stable system of the double truss type door frame structure.

Furthermore, two sides of a base of the detachable universal wheel assembly are provided with walking wheels, the upper end of the base is connected and reinforced with a portal base through a chemical anchor bolt, and the liftable bottom support is arranged between the two walking wheels and is connected and reinforced with a supporting structure of a main building through the chemical anchor bolt during operation; the lifting bottom supports are arranged between the two travelling wheels, so that the lifting steel truss can meet the requirement of more lifting construction nodes.

Furthermore, two sides of a lower chord truss of the two trusses are respectively provided with an overhanging operation platform, the upper end of the overhanging operation platform is paved with a layer of wood plywood, and two sides of the overhanging operation platform are both provided with safety guard rails; the safety protective guard further combines all the overhanging operation platforms into an effective, safe and closed whole.

Furthermore, a transverse steel beam is fixedly arranged at the middle section of the lower chord truss, and guide rails are respectively arranged on the top surface and the left and right side surfaces of the transverse steel beam; the guide rail can be matched with a hanging basket arranged on the guide rail to directionally move on the transverse steel beam.

Furthermore, a horizontal connecting rod is arranged at the upper end of the hanging basket, pulley assemblies are arranged at the left end and the right end of the horizontal connecting rod, each pulley assembly comprises a hanging transverse plate, hanging vertical plates respectively arranged at the two ends of the hanging transverse plate, and a directional pulley, a first auxiliary pulley and a second auxiliary pulley which are arranged on the hanging transverse plate and the hanging vertical plates and correspond to the guide rails, and the pulley assemblies slide along the guide rails; the directional pulley, the first auxiliary pulley and the second auxiliary pulley are connected, restrained and limited with the guide rail on the transverse steel beam, so that the hanging basket is more stable when moving directionally within the range of the transverse steel beam, and cannot fall off easily.

In addition, the directional pulley block comprises a main pulley, a secondary pulley, a lifting hook and a steel wire rope, wherein a fixed pulley of the main pulley is fixedly connected with a moving assembly at the lower end of the double trusses through a steel chain, a movable pulley of the main pulley is connected with the lifting hook, the secondary pulley is positioned between the movable pulley and the fixed pulley of the main pulley, and the directional pulley block is connected with a winch through the steel wire rope; the hoisting component and the lifting hook in the directional sliding group are combined into a hoisting section through the lifting ring, the hoisting section is stressed together and completes aerial hoisting of the component, and the moving component can control directional movement, so that the hoisting direction of the component can be changed conveniently, and the component is prevented from impacting a building in the hoisting process.

The invention has the following advantages:

(1) the invention is not influenced by the shape of the building, is suitable for hoisting members with various spans in the building, is easier to control the hoisting, and can be used at any stage.

(2) The invention has lower cost, can be hoisted without a truck crane, and saves a large amount of labor cost, material cost and mechanical shift cost.

(3) The hoisting truss material, the winch and other mechanical equipment used by the invention can be recycled, and other equipment and used materials can be recycled, so that the method is green and environment-friendly, and a large amount of cost is saved.

(4) The invention provides safe and reliable operation space for construction adopting segmented hoisting and air splicing, and greatly improves the construction safety and the construction quality.

(5) The invention reduces the generation of various wastes and the emission of carbon dioxide by reducing the use of machinery and the construction period, and is beneficial to environmental protection.

Drawings

FIG. 1 is a front view of a mobile detachable hoisting steel truss of the present invention;

FIG. 2 is a side view of the mobile detachable hoisted steel truss of the present invention;

FIG. 3 is a schematic structural view of a removable universal wheel assembly;

FIG. 4 is a schematic view of a pulley block structure;

FIG. 5 is a cross-sectional view of an upper chord steel truss;

FIG. 6 is a cross-sectional view of a lower chord steel truss;

FIG. 7 is a schematic structural view of a main body part of the movable detachable hoisting steel truss;

FIG. 8 is a schematic structural diagram of a basket;

FIG. 9 is an enlarged view of portion A of FIG. 8;

FIG. 10 is a cross-sectional view of the basket;

FIG. 11 is a schematic diagram of the hoisting operation of the mobile detachable hoisting steel truss of the invention;

the notation in the figure is: 1. two trusses; 11. an upper chord truss; 12. a lower chord truss; 13. a horizontal cross beam; 2. a gate-type steel column; 21. a first steel doorpost; 22. a second steel doorpost; 23. a cross-type connecting rod; 3. transversely placing the steel beam; 31. a horizontal connecting rod; 4. a detachable universal wheel assembly; 41. a chemical anchor bolt; 42. a traveling wheel; 43. a gate post base; 44. the bottom support can be lifted; 5. a directional pulley block; 51. a main pulley; 52. a secondary pulley; 53. a hook; 54. a wire rope; 55. a guide rail; 56. a hoisting ring; 57. hoisting the component; 58. a moving assembly; 6. a hanging basket; 61. a directional pulley; 62. a first auxiliary sheave; 63. a second auxiliary pulley 64 and a hanging vertical plate; 65. hanging a transverse plate; 66. wood plywood; 7. a winch; 8. a cantilever operation platform; 81. a safety guard rail; 9. a main building.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a movable quick-release steel lifting truss of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-10, the present embodiment is a movable quick-release steel hoisting truss, which is suitable for large-span ceilings and steel frame structure projects inside buildings, and the hoisting truss structure mainly comprises a main structure and an auxiliary part. The main body structure is a double-portal-type truss structure and specifically comprises two portal-type steel columns 2, a double-portal-type truss 1 connected between the two portal-type steel columns 2, two horizontal cross beams 13 arranged in the double-portal-type truss 1 in a relative mode and a detachable universal wheel assembly 4 arranged at the bottom of each two portal-type steel column 2; the truss auxiliary part is a matched facility attached to a main body structure, and mainly comprises a directional pulley block 5, a hanging basket 6, a winch 7, an overhanging operation platform 8 and the like, and the directional pulley block, the hanging basket, the winch 7, the overhanging operation platform and the like are mainly attached to the periphery of the main body structure to form a safe, reliable and efficient-working hoisting construction system, wherein the main body structure is mainly made of square steel pipes with different specifications, in consideration of the stability of the structure, an upper chord truss 11 and a lower chord truss 12 in the truss are respectively welded with a door column by adopting rigid welding materials to form a space stable system of a double-truss type door frame structure, in order to ensure the self rigidity requirement, the bottom of a truss upright column is connected with the main body building by adopting chemical bolts 41, and meanwhile, in order to facilitate the movement of the hoisting truss, a column base is provided with a detachable universal wheel assembly 4, and various irregular building types and bad field factors can be easily coped with.

The detachable universal wheel assembly 4 is specifically composed of a traveling wheel 42, a door post base 43 and a liftable bottom support 44, a plurality of through holes which are relatively penetrated are arranged in the vertical direction of the liftable bottom support 44 and correspond to the limiting holes at the bottom of the door type steel column 2, and the liftable bottom support 44 is inserted into the limiting holes through instrument bolts to adjust the height.

The wheels and the door column base are connected and reinforced by chemical anchor bolts 41; during hoisting, the liftable bottom support 44 and the main building 9 are combined and reinforced by four chemical anchor bolts 41, namely an upper chemical anchor bolt 41, a lower chemical anchor bolt 41, a left chemical anchor bolt 41 and a right chemical anchor bolt.

The operation platform 8 of encorbelmenting has been set up respectively along its vertical direction in the left and right sides face of lower chord crossbeam 12, the wooden plywood 66 of one deck has all been laid to the operation platform 8 upper end of encorbelmenting, the operation platform 8 both sides of encorbelmenting all are provided with safety protection fence 81, further make up into effective, safe, closed whole with each operation platform of encorbelmenting.

The transverse steel beam 3 is arranged at the middle section 1/2 of the lower chord truss 12, and guide rails 55 are arranged on the upper surface, the left side and the right side of the transverse steel beam 3; pulley assemblies are arranged on two sides of the horizontal connecting rod 31 at the upper end of the hanging basket 6 and slide on the guide rails 55.

The pulley assembly of the hanging basket 6 comprises a directional pulley 61, a first auxiliary pulley 62, a second auxiliary pulley 63, a hanging vertical plate 64 and a hanging transverse plate 65; the directional pulley 61 is fixed on hanging diaphragm 65, first supplementary pulley 62 and second supplementary pulley 63 are fixed in hanging riser 64 of hanging diaphragm 65 both sides is realized hanging basket 6 directional removal and further restriction in horizontal girder steel 3 within range.

The directional sliding group 5 consists of a main pulley 51, a secondary pulley 52, a hook 53, a steel wire rope 54 and a moving assembly 58, wherein a fixed pulley of the main pulley 51 is fixedly connected with the moving assembly 58 at the lower end of the double-truss 1 through a steel chain, the moving assembly 58 can move in a controllable direction, the lifting direction of a component is changed by adjusting the moving assembly 58, and the component is prevented from impacting a building in the lifting process; the movable pulley of the main pulley 51 is connected with a hook 53, the secondary pulley 52 is positioned between the movable pulley and the fixed pulley of the main pulley 51, and the directional pulley block 5 is connected with the winch 7 through the steel wire rope 54. When the hoisting device is used, the hoisting member 57 and the lifting hook 53 in the directional sliding group 5 are combined into a hoisting section through the hoisting ring 56, and the hoisting section and the lifting hook are stressed together to complete hoisting of the member in the air; the size of the hoisting truss is adjusted according to the size of the on-site opening, the components of the hoisting truss are formed by prefabrication, on-site assembly and segmented hoisting, the manufacturing and reforming work can be directly completed on the on-site ground or floor level, and the hoisting truss is suitable for hoisting components with various spans in a building.

In order to ensure the stability of a hoisting truss structure, the double trusses 1 and the steel door posts 2 are made of rigid welding materials, and are welded with the door posts to form a space stable system of a double-truss type door frame structure, so that the requirement on the rigidity of the double-truss type door frame structure during hoisting operation is ensured.

Specifically, any one of the movable quick detachable steel truss members is assembled in a tool type mode, and can be conveyed to the interior of a building through a crane to be hoisted after being prefabricated on site in advance, and the condition that any building internal equipment is hoisted on a construction site in an assembling, detachable, weldable, movable and flexible mode is achieved.

The hoisting construction of the steel truss is mainly divided into three stages:

the first stage is as follows: and (5) installing a hoisting steel truss. As shown in figures 1-10, most of the components of the invention come from project sites, and various factors such as construction environment, site opening size and operation span conditions are considered, so that the hoisting steel truss can be directly manufactured and reformed on a roof site or a floor layer at a reserved opening in a building. After the components for hoisting the steel truss are manufactured on site, the components can be welded into pieces and spliced and installed on the ground. As shown in fig. 7, firstly, portal rigid columns 2 at two ends of the truss (including a first steel portal column 21, a second steel portal column 22 and a cross connecting rod 23) are installed, after the steel portal columns are installed, a chemical anchor bolt 41 is used for fixing a liftable bottom support 44 at the column bottom of the steel portal columns and a building 9 through an anchor bolt, and then the prefabricated truss beam is hoisted to a steel column calibration position through a tower crane and is welded and fixed. The other truss 1, the horizontal beam 13 and the horizontal steel beam 3 are welded and fixed by the same method, and finally, the auxiliary parts such as the overhanging work platform 8 and the hanging basket 6 are installed. The selection of the winches 7 and the directional pulley blocks 5 should consider factors such as the load of hoisting components, and the like, the hoisting system of the practical case of the invention adopts a hoisting mode that 2 5 tons of winches 7 are matched with the directional pulley blocks 5 for hoisting, the winches 7 are respectively fixed at the bottom positions of column feet at two ends of a truss, and the pulley blocks 5 and the lifting hooks 53 are hung on the truss. After the hoisting truss is installed, all parts and installation need to be carried out according to design drawings, the electrical equipment is checked totally, and after the hoisting truss is correct, a no-load test is carried out, wherein the no-load test comprises that the hoisting machine 7, the pulley block 5, the lifting hook 53 and the like are lifted normally, and after the hoisting truss is correct, the trial hoisting is carried out. After the hoisting test result is qualified, the report is accepted by the manager, and the report is used after the report is approved by the safety supervision station in the market.

And a second stage: prefabricating, hoisting and splicing the hoisting component. As shown in fig. 11, the hoisting member is first transferred to the bottom floor hoisting position in place using a flat car. And when the top hoisting truss moves to the hoisting point and is fixed with the building main body, hoisting is carried out by adopting a hoisting mode that a winch 7 is matched with a pulley block 5. The hoisted component is hoisted by two points, hoisting points are welded at the positions of the two ends 1/2 of the component, and the steel wire rope 54 is required to be in a vertical state during hoisting. In the hoisting process, sliding ropes are arranged at two ends of the component, the lifting state is adjusted manually and locally, and the component is prevented from impacting a building in the hoisting process. According to the method, after the component is hoisted, the steel truss is moved to switch the hoisting point, and the installation and hoisting of the component are completed in sequence. If the hoisting member is overlong or overweight, a construction hanging basket 6 can be additionally arranged on the truss to hoist the member in sections, after the member on one side is hoisted in place according to the steps, one end of the member is fixedly arranged on the embedded part of the main building, and the other end of the member is mechanically fixed; simultaneously hoisting and fixing the other side member by the same method; the positions of the components are corrected by adopting detection equipment such as a theodolite, a level gauge and the like until the design requirements are met, and after the retest is accurate, the procedures of alignment and positioning, welding of welding lines, flaw detection of the welding lines, surface paint repair and the like are finished in the air. The hung components need to be monitored synchronously, and can be fixed after the position, elevation, camber and the like meet the design requirements.

And a third stage: and (5) dismantling the hoisting truss. And after all the members to be hoisted are installed, the movable hoisting truss is dismantled. The dismantling sequence is as follows: directional pulley block 5 → hanging basket 6 → windlass 7 → horizontal steel beam 3 → overhanging work platform 8 → double truss 1 → steel door column 2. And when the truss trusses are dismantled, the stability of the steel columns can be ensured by adopting modes such as steel pipe throwing and supporting and the like.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A mobile quick-release hoisting steel truss, the hoisting steel truss structure is composed of a main structure and an auxiliary part, and the main structure is a double-door truss structure, including two oppositely arranged portal steel columns (2 ), a double truss (1) connected between the two portal steel columns (2), and two horizontal beams (13) oppositely arranged in the double truss (1); it is characterized in that the portal steel The bottom of the column (2) is provided with a removable universal wheel assembly (4), and the bottom end of the removable universal wheel assembly (4) is provided with a liftable bottom bracket (44);

The supporting facilities include two directional pulley sets (5) arranged alternately at the lower ends of the double trusses (1), a hanging basket (6) arranged on the horizontal beam (13), and a hanging basket (6) arranged on the portal steel The hoist (7) at the lower part of the column (2) and the cantilevered work platform (8) arranged on the side of the double truss (1).

2 . The mobile detachable and hoisting steel truss according to claim 1 , wherein the base of the detachable universal wheel assembly ( 4 ) is provided with traveling wheels ( 42 ) on both sides, and the base The upper end is connected and reinforced by chemical anchor bolts (41) with the door pillar base (43). The support structure of the object (9) is connected and strengthened.

3. The mobile quick-detachable and hoisting steel truss according to claim 1, characterized in that, two sides of the lower chord truss (12) of the double truss (1) are respectively provided with a cantilevered working platform (8), so A layer of wooden plywood (66) is laid on the upper end of the overhanging operation platform (8), and safety guardrails (81) are provided on both sides of the overhanging operation platform (8).

4. The mobile quick-release hoisting steel truss according to claim 3, characterized in that a transverse steel beam (3) is fixedly arranged in the middle section of the lower chord truss (12), and the transverse steel beam (3) Guide rails (55) are respectively provided on the top surface and the left and right sides.

5 . The mobile quick-release hoisting steel truss according to claim 1 , wherein the upper end of the hanging basket ( 6 ) is provided with a horizontal connecting rod ( 31 ), and the left and right ends of the horizontal connecting rod ( 31 ). A pulley assembly is provided at the end, and the pulley assembly includes a hooking horizontal plate (65), hooking vertical plates (64) respectively arranged at both ends of the hooking horizontal plate (65), and a hooking horizontal plate (64) arranged on the hooking horizontal plate (64). (65) and the directional pulley (61), the first auxiliary pulley (62), and the second auxiliary pulley (63) corresponding to the guide rail (55) on the hanging vertical plate (64), the pulley assembly is along the Slide on the guide rail (55).

6 . The mobile quick-detachable hoisting steel truss according to claim 1 , wherein the directional pulley block ( 5 ) comprises a main pulley ( 51 ), a secondary pulley ( 52 ), a hook ( 53 ), a wire rope ( 54), the fixed pulley of the main pulley (51) is fixedly connected to the moving assembly (58) at the lower end of the double-truss truss (1) through a steel chain, and the movable pulley of the main pulley (51) is connected to the hook (53) , the secondary pulley (52) is located between the movable pulley and the fixed pulley of the main pulley (51), and the directional pulley group (5) is connected to the hoist (7) through the wire rope (54).