CN115030311A - Installation construction method and construction lifting device for door type steel frame structure - Google Patents

Abstract

The invention relates to the technical field of portal steel frame building construction, in particular to a portal steel frame structure installation construction method and a construction lifting device. The foldable suspension platform comprises a lifting frame and a suspension platform, wherein the suspension platform is slidably arranged on the lifting frame through the lifting platform, side suspension platforms are arranged on two sides of the suspension platform, the side suspension platforms are controlled to be folded through hinges, and the suspension platform is arranged in the middle of the lifting platform through the hinges and is controlled to be folded through the hinges. This elevating gear is exclusively used in from building inside to building outside expansion construction platform, solve the high altitude construction of the limited factor in outdoor place in the installation of portal frame structure, but the platform of hanging adopts folding design, can pass and expand behind the truss clearance and carry out the construction, furthest extends the construction platform area, the crane sets up inside the building, construction platform sets up outside the building, both sides are weighed and can be relied on building construction itself to fix and protect when guaranteeing the balance, the security is higher than outdoor construction machinery with the construction platform homonymy setting.

Description

A kind of portal steel frame structure installation construction method and construction lifting device

technical field

The invention relates to the technical field of portal steel frame building construction, in particular to a portal steel frame structure installation and construction method and a construction lifting device.

Background technique

Portal steel frame buildings are widely used in site construction in the fields of factory workshops and warehousing due to their low cost, high installation efficiency and durability. The installation process of large portal steel frame buildings requires construction personnel to perform high-altitude operations. Due to the high density of land for storage and storage, the installation of large-scale construction machinery during the construction process is hindered, including reconstruction on the basis of the original building, which will also limit the use of large-scale construction machinery.

The existing high-altitude working methods mainly include scaffolding, hanging frames and crank-arm trucks. The installation of scaffolding requires time and effort, which seriously delays the construction period and violates the requirements of rapid construction of portal steel frame buildings. Not only the construction period is delayed, but also due to the limited space occupied by the site, large cranes cannot be installed. Therefore, only high-altitude construction machinery can be installed inside the portal steel structure. The interior of the building is installed to the exterior.

SUMMARY OF THE INVENTION

In order to solve the problem that large-scale portal steel frame buildings limit the installation site of construction machinery in densely built areas, and at the same time improve the efficiency of high-altitude construction, the present invention provides a portal steel frame structure installation and construction method and a construction lifting device.

On the one hand, a kind of portal steel frame structure installation and construction method provided by the present invention adopts the following technical scheme:

A construction method for installing a portal steel frame structure, comprising the following construction steps:

Use a crane to lift the portal truss to the predetermined installation position and install and fix it at the bottom;

Install purlins on the top beam and two side columns of the finished portal truss. When installing the purlins, use the lifting frame to move the construction personnel from the inside of the portal truss to the construction position to fix the purlins;

Suspend the wall panel on the outer side of the portal truss, set up a lifting frame inside the portal truss, and move the construction personnel to the external construction position of the portal truss through the lifting frame to fix the wall panel;

When the lifting frame transfers the construction personnel, the construction personnel stand on the foldable suspension platform, the lifting frame transfers the construction personnel to a predetermined height, and the suspension platform is unfolded, and the construction personnel perform construction operations on the unfolded suspension platform;

After the hanging platform is unfolded, the hanging ladder is installed on one side of the hanging platform, and the hanging ladder is hung on the purlin by hooks for fixing.

By adopting the above technical solution, the construction machinery arranged inside the portal truss is realized through the cantilever lift frame to transfer the construction personnel to the outside of the portal truss for construction, which reduces the installation of the construction machinery and reduces the limited construction site. Construction difficulty, the hanging ladder is used to flexibly expand the construction area, and used in conjunction with the lifting frame to ensure the safety of the construction personnel, while effectively improving the construction efficiency and reducing the occupation of the external area of the building.

Preferably, the hanging ladder includes a ladder frame and a step rod, the ladder frame is composed of three steel pipes in the shape of a triangular prism, and a plurality of step rods are fixed horizontally between each steel pipe of the ladder frame and the adjacent steel pipe, When using the hanging ladder, the construction personnel move up and down by climbing the stepping rod, enter the interior of the hanging ladder when staying, and place a horizontal board on the stepping rod for stepping on or sitting on a chair.

By adopting the above technical solution, the triangular hanging ladder facilitates the construction personnel to climb from any side, facilitates the construction personnel to perform flexible operations, and at the same time, the hanging ladder as a whole can be used as a protective cage to protect the construction personnel.

On the other hand, a kind of portal steel frame structure installation construction lifting device provided by the present invention adopts the following technical scheme:

A gantry steel frame structure installation construction lifting device, including a lifting frame and a suspension platform, the suspension platform is slidably installed on the lifting frame through the lifting platform, and side suspension platforms are arranged on both sides of the suspension platform, and the side suspension platform Folding is controlled by hinges, a main guardrail is arranged at the side edge of the suspension platform away from the lifting frame, and a secondary guardrail is arranged at the side edge of the side suspension platform. The suspension platform is installed in the middle of the lifting platform through a hinge and controlled by the hinge The suspension is folded.

By adopting the above technical solutions, the lifting device is specially used to expand the construction platform from the inside of the building to the outside of the building, so as to solve the high-altitude construction due to the limitation of the outdoor site during the installation of the portal steel frame structure. The suspension platform adopts a foldable design and can pass through After the truss is cleared, the construction is carried out to maximize the area of the construction platform. The lifting frame is set inside the building, and the construction platform is set outside the building. The two sides are weighed to ensure balance and can be fixed and protected by relying on the building itself. The safety is higher than Construction machinery installed outdoors on the same side as the construction platform.

Preferably, a limiting plate is provided on the side of the auxiliary guardrail close to the main guardrail, and when the side suspension platform is unfolded, the limiting plate is clamped at the side of the main guardrail.

By adopting the above technical solution, when the auxiliary guardrail is unfolded, only relying on the hinge to support the stability is relatively low, so the limit plate is beneficial to provide a more stable support for fixing the side suspension platform.

Preferably, the lifting platform is controlled to rise and fall by pulling the wire rope through a hoist, the hoist is arranged on the top of the lifting frame, and is controlled to rotate by a hoisting motor.

By adopting the above technical solution, the hoist can realize stable remote gravity transmission, stable use and convenient control.

Preferably, the lifting platform is provided with a movable pulley, the top of the lifting frame is provided with a fixed pulley, the wire rope is wound on the movable pulley and the fixed pulley, one end of the wire rope is fixed on the lifting frame, and the other end is wound on the hoist superior.

By adopting the above technical solution, the force of the hoist is reduced by the combined use of the movable pulley and the fixed pulley.

Preferably, a climbing gear is provided on the lifting platform, and the climbing gear is engaged with a climbing rack on the lifting frame.

By adopting the above technical solution, the climbing gear and the climbing rack are used in combination to improve the stability of the lifting platform moving up and down, and the climbing gear and the climbing rack are convenient to provide locking to prevent the lifting platform from falling.

Preferably, the bottom of the lift platform is provided with a support wheel, the support wheel rolls against the lift frame, and the support wheel and the climbing gear are respectively arranged on both sides of the lift frame.

By adopting the above technical solution, the supporting wheel and the climbing gear are used together to reduce the sliding friction between the lifting platform and the lifting frame, facilitate sliding, reduce noise, and improve service life.

Preferably, the bottom of the lifting frame is provided with a chassis, the bottom of the chassis is provided with moving wheels, the moving wheels are crawler wheels, the side of the chassis is provided with steering wheels, and the steering wheels are tire wheels.

By adopting the above technical solution, the crawler-type moving wheel moves stably and is not easy to move in a non-driving state, and the stability is reliable. The tire-type steering wheel is used to overcome the steering difficulty of the crawler-type moving wheel.

Preferably, a counterweight is provided on the chassis, the counterweight is composed of a plurality of reinforced concrete or steel plates stacked, and a diagonal brace is provided at the connection between the lifting frame and the chassis.

By adopting the above technical solution, the counterweight is used to balance the overall weight to prevent tipping, and the diagonal brace improves the stability of the connection between the lifting frame and the chassis.

To sum up, the present invention has the following beneficial technical effects:

1. The construction machinery set inside the portal truss is realized through the cantilever lifting frame, and the construction personnel are transferred to the outside of the portal truss for construction, which reduces the installation of the responsible construction machinery and reduces the construction difficulty limited to the construction site. The ladder is used to flexibly expand the construction area, and it is used in conjunction with the lifting frame to ensure the safety of the construction personnel while effectively improving the construction efficiency and reducing the occupation of the external area of the building. The triangular hanging ladder is convenient for construction personnel to climb from any side Flexible operation, and the whole hanging ladder can be used as a protective cage to protect the construction personnel.

2. This lifting device is specially used to expand the construction platform from the inside of the building to the outside of the building to solve the high-altitude construction of the outdoor site during the installation of the portal steel structure. The suspension platform adopts a foldable design and can be unfolded after passing through the truss gap Carry out construction and maximize the area of the construction platform. The lifting frame is set inside the building, and the construction platform is set outside the building. Both sides are weighed to ensure balance and can be fixed and protected by relying on the building itself. The safety is higher than that of outdoor and construction platforms. Construction machinery set on the same side.

3. When the auxiliary guardrail is unfolded, the stability is relatively low only by relying on the hinge support, so the limit plate is beneficial to provide a more stable support for fixing the side suspension platform. The hoist can realize stable remote gravity transmission, stable use and convenient control. The combined use of the movable pulley and the fixed pulley reduces the force of the hoist. The combination of the climbing gear and the climbing rack improves the stability of the up and down movement of the lifting platform. The climbing gear and the climbing rack are convenient to provide locking to prevent the lifting platform from falling. , The use of supporting wheels and climbing gears reduces the sliding friction between the lifting platform and the lifting frame, which is convenient for sliding and reduces noise, and improves the service life. Reliable, the tire-type steering wheel is used to overcome the steering difficulty of the crawler-type mobile wheel, the counterweight is used to balance the overall weight and prevent tipping, and the diagonal brace improves the stability of the connection between the lifting frame and the chassis.

Description of drawings

Fig. 1 is the construction structure schematic diagram of the present invention;

Fig. 2 is the schematic diagram of another angle of view of Fig. 1;

Fig. 3 is the structure schematic diagram of the lifting frame of the present invention;

4 is a schematic diagram of the suspended state of the present invention;

Fig. 5 is the schematic diagram of another angle of view of Fig. 3;

6 is a schematic diagram of the structure of the suspension platform of the present invention;

FIG. 7 is a schematic diagram of the structure of the hanging ladder of the present invention.

Description of reference numbers:

100, portal truss, 101, wall panel;

1. Lifting frame, 10, Climbing rack, 11, Lifting platform, 111, Moving pulley, 112, Climbing gear, 113, Support wheel, 12, Hoist, 121, Fixed pulley, 122, Hoist motor, 123, Steel cable, 13, chassis, 131, moving wheel, 132, steering wheel, 133, counterweight, 134, diagonal brace;

2. Suspension platform, 20, Main guardrail, 21, Side suspension platform, 211, Secondary guardrail, 212, Limit plate;

3. Hanging ladder, 31, ladder frame, 311, hook, 32, tread bar.

Detailed ways

The present invention will be further described in detail below in conjunction with accompanying drawings 1-7.

Example 1:

The embodiment of the present invention discloses a construction method for installing a portal steel frame structure, comprising the following construction steps:

1 and 2, use a crane to lift the portal truss 100 to a predetermined installation position and install and fix it at the bottom;

Install purlins on the top beam and two side columns of the installed portal truss 100. When installing the purlins, use the lifting frame 1 to move the construction personnel from the interior of the portal truss 100 to the construction position to fix and install the purlins;

The wall panel 101 is suspended on the outer side of the portal truss 100 , and a lifting frame 1 is arranged inside the portal truss 100 , and the construction personnel are moved to the external construction position of the portal truss 100 through the lifting frame 1 to fix the wall panel 101 Install;

When the lifting frame 1 transfers the construction personnel, the construction personnel stand on the foldable suspension platform 2, the lifting frame 1 transfers the construction personnel to a predetermined height and the suspension platform 2 is unfolded, and the construction personnel perform construction work on the unfolded suspension platform 2. ;

After the hanging platform 2 is unfolded, the hanging ladder 3 is installed on one side of the hanging platform 2 , and the hanging ladder 3 is hung on the purlin by the hook 311 for fixing.

1 and 7, the hanging ladder 3 includes a ladder frame 31 and a tread bar 32, the ladder frame 31 is composed of three steel pipes in the shape of a triangular prism, and the interval between each steel pipe of the ladder frame 31 and the adjacent steel pipe is horizontal A plurality of stepping rods 32 are fixedly arranged. When using the hanging ladder 3, the construction personnel move up and down by climbing the stepping rods 32, enter the interior of the hanging ladder 3 when staying, and place a horizontal board on the stepping rod 32 for stepping on or chair.

Example 2:

3-5, a portal steel structure installation construction lifting device, including a lifting frame 1 and a suspension platform 2, the suspension platform 2 is slidably installed on the lifting frame 1 through the lifting platform 11, the suspension platform 2 is two A side suspension platform 21 is arranged on the side, and the side suspension platform 21 is controlled to be folded by a hinge. A main guardrail 20 is arranged on the side edge of the suspension platform 2 away from the lifting frame 1, and a secondary suspension platform 21 is arranged at the side edge of the side suspension platform 21. The guardrail 211, the suspension platform 2 is installed in the middle of the lifting platform 11 through a hinge, and the suspension platform 2 is controlled to be folded through the hinge.

The implementation of embodiment 2 is:

The construction personnel stand on the lifting platform 11, and then along with the drive, the lifting platform 11 is raised along the lifting frame 1 to a predetermined height, the construction personnel unfold the suspension platform 2 and then the side suspension platform 21, and the construction personnel move to the suspension platform. The construction work is carried out on the platform 2 and the side suspension platform 21 . After the completion, the construction personnel return to the lifting platform 11 to fold the suspension platform 2 and the side suspension platform 21 .

Example 3:

On the basis of Example 2, increase:

Referring to FIG. 6 , a limiting plate 212 is provided on the side of the secondary guardrail 211 close to the main guardrail 20 . When the side suspension platform 21 is unfolded, the limiting plate 212 is stuck at the side of the main guardrail 20 .

Referring to FIGS. 3-5 , the lift table 11 is controlled to ascend and descend by pulling the wire rope 123 through the winch 12 , the winch 12 is arranged on the top of the lift frame 1 , and is controlled to rotate by the winch motor 122 .

3-5, the bottom of the lift frame 1 is provided with a chassis 13, the bottom of the chassis 13 is provided with a moving wheel 131, the moving wheel 131 is a crawler wheel, the side of the chassis 13 is provided with a steering wheel 132, so The steering wheel 132 is a tire wheel.

The implementation of embodiment 3 is:

On the basis of the implementation of Example 2, add:

When the lifting frame 1 moves, it includes linear movement and steering. During the linear movement, the moving wheel 131 rotates under the drive to realize translation, and at the same time drives the steering wheel 132 to rotate. The wheel 131 does not rotate and serves as a fulcrum of rotation.

Example 4:

On the basis of Example 3, increase:

3-5 , a movable pulley 111 is provided on the lifting platform 11 , a fixed pulley 121 is provided on the top of the lifting frame 1 , the wire rope 123 is wound on the movable pulley 111 and the fixed pulley 121 , and one end of the wire rope 123 is It is fixed on the lifting frame 1, and the other end is wound on the hoist 12.

3-5 , the lifting platform 11 is provided with a climbing gear 112 , and the climbing gear 112 is engaged with the climbing rack 10 on the lifting frame 1 .

3-5 , the bottom of the lift platform 11 is provided with support wheels 113 , the support wheels 113 roll against the lift frame 1 , and the support wheels 113 and climbing gears 112 are respectively arranged on both sides of the lift frame 1 .

A locking mechanism is provided on the climbing gear 112 .

3-5 , the chassis 13 is provided with a counterweight 133 , the counterweight 133 is composed of a plurality of reinforced concrete or steel plates stacked, and a diagonal brace 134 is provided at the connection between the lift frame 1 and the chassis 13 .

The implementation of embodiment 4 is:

On the basis of the implementation of Example 3, increase:

The wire rope 123 is wound between the movable pulley 111 and the fixed pulley 121 for 2-5 turns to reduce the load of the hoist 12. When the lift table 11 stops moving, a locking mechanism is provided on the climbing gear 112 to lock the climbing gear 112 to prevent lifting Table 11 fell.

The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention. Inside.

Claims (10)

1. A method for installing and constructing a door type steel frame structure is characterized by comprising the following steps: the method comprises the following construction steps:

hoisting the portal truss (100) to a preset installation position by using a crane, and installing and fixing the portal truss at the bottom;

purlins are installed on a cross beam at the top of the installed door type truss (100) and upright columns on two sides, and constructors are transferred to a construction position from the inside of the door type truss (100) by utilizing the lifting frame (1) to fixedly install the purlins when the purlins are installed;

the method comprises the following steps that a wallboard (101) is placed at the outer side position of a door type truss (100) in a hanging mode, a lifting frame (1) is arranged inside the door type truss (100), and constructors are moved to the outer construction position of the door type truss (100) through the lifting frame (1) to fixedly install the wallboard (101);

when the lifting frame (1) transfers constructors, the constructors stand on the foldable suspension platform (2), the lifting frame (1) transfers the constructors to a preset height, then the suspension platform (2) is unfolded, and the constructors perform construction operation on the unfolded suspension platform (2);

after the suspension table (2) is unfolded, the hanging ladder (3) is installed on one side of the suspension table (2), and the hanging ladder (3) is hung on the purline through the hook (311) to be fixed.

2. The method of installing and constructing a portal steel frame structure according to claim 1, wherein: the hanging ladder (3) comprises a ladder frame (31) and pedal rods (32), the ladder frame (31) is composed of three steel pipes in a triangular prism shape, and a plurality of pedal rods (32) are horizontally and fixedly arranged between each steel pipe of the ladder frame (31) and the adjacent steel pipe at intervals;

constructors use the hanging ladder (3), move up and down by climbing the pedal rod (32), enter the inside of the hanging ladder (3) when staying, and place a transverse plate on the pedal rod (32) for treading or sitting.

3. The utility model provides a door formula steel frame construction installation elevating gear which characterized in that: the device comprises a lifting frame (1) and a suspension platform (2), wherein the suspension platform (2) is slidably arranged on the lifting frame (1) through a lifting platform (11);

side suspension platforms (21) are arranged on two sides of the suspension platform (2), the side suspension platforms (21) are controlled to be folded through hinges, a main guardrail (20) is arranged at the edge of one side, away from the lifting frame (1), of the suspension platform (2), and an auxiliary guardrail (211) is arranged at the edge of the side suspension platform (21);

the suspension platform (2) is arranged in the middle of the lifting platform (11) through a hinge and is controlled to be folded through the hinge to control the suspension platform (2).

4. The gate steel frame structure erection construction elevating gear of claim 3, characterized by: and a limiting plate (212) is arranged on one side, close to the main guardrail (20), of the auxiliary guardrail (211), and when the side suspension table (21) is unfolded, the limiting plate (212) is clamped at the side edge of the main guardrail (20).

5. The gate steel frame structure erection construction elevating gear of claim 3, characterized by: the lifting platform (11) is controlled to ascend and descend by pulling a steel cable (123) through a winch (12), and the winch (12) is arranged at the top of the lifting frame (1) and is controlled to rotate through a winch motor (122).

6. The gate steel frame structure erection construction elevating gear of claim 5, characterized by: the lifting platform (11) is provided with a movable pulley (111), the top of the lifting frame (1) is provided with a fixed pulley (121), a steel cable (123) is wound on the movable pulley (111) and the fixed pulley (121), one end of the steel cable (123) is fixed on the lifting frame (1), and the other end of the steel cable is wound on the winch (12).

7. The gate type steel frame structure erection construction lifting device of claim 5, wherein: be provided with climbing gear (112) on elevating platform (11), climbing gear (112) mesh with climbing rack (10) on crane (1).

8. The gate steel frame structure erection construction lifting device of claim 7, characterized in that: the lifting platform is characterized in that a supporting wheel (113) is arranged at the bottom of the lifting platform (11), the supporting wheel (113) is tightly attached to the lifting frame (1) to roll, and the supporting wheel (113) and the climbing gear (112) are respectively arranged on two sides of the lifting frame (1).

9. The gate steel frame structure erection construction elevating gear of claim 3, characterized by: the lifting frame is characterized in that a chassis (13) is arranged at the bottom of the lifting frame (1), moving wheels (131) are arranged at the bottom of the chassis (13), the moving wheels (131) are crawler-type wheels, steering wheels (132) are arranged on the side faces of the chassis (13), and the steering wheels (132) are tire-type wheels.

10. The gate steel frame structure erection construction lifting device of claim 9, wherein: the lifting frame is characterized in that a counterweight (133) is arranged on the chassis (13), the counterweight (133) is formed by stacking a plurality of reinforced concrete or steel plates, and an inclined strut (134) is arranged at the joint of the lifting frame (1) and the chassis (13).

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