CN103741964A - Rake type lifting frame and dismantling method for reinforced concrete groove-shaped roof boards - Google Patents

Abstract

The invention discloses a rake type lifting frame and a dismantling method for reinforced concrete groove-shaped roof boards. The dismantling method for the reinforced concrete groove-shaped roof boards can conveniently dismantle the roof boards. The rake type lifting frame comprises two base supports, two inclined supports, two vertical supports and a plurality of horizontal supports; the two base supports which are horizontally arranged in a mutually parallel mode are arranged on external side at opposite two ends in the length direction of the roof boards to be dismantled; one ends of the two inclined supports and one ends of the two base supports are fixed; one ends of the two inclined supports upwardly extend obliquely in a mutually parallel mode; the length of the two vertical supports is identical; the two vertical supports are fixedly connected between the fixed base supports and inclined supports to support the inclined supports; the plurality of horizontal supports are connected between the two base supports and the two inclined supports; portions of the two inclined supports, which upwardly extend obliquely from connecting points of the vertical supports, are provided with two manual hoists which are used for lifting the roof boards; the horizontal distance between the two manual hoists which are arranged on the same inclined support is less than the width of the rood boards.

Description

Dismantling method of rake hoisting frame and reinforced concrete trough roof panel

technical field

The invention relates to the field of roof panel removal construction, in particular to a rake-type hoisting frame and a method for removing reinforced concrete trough-shaped roof panels using the rake-type hoisting frame.

Background technique

At present, when removing reinforced concrete roof slabs, direct crushing or self-propelled cranes are mainly used for demolition. These two demolition methods need to stop production, and the production equipment of the roof accessories needs to be shut down, and these production equipment should be removed to avoid affecting the normal demolition or damage of the roof panels, making the roof panel removal process complicated and time-consuming longer.

In some cases, due to the limitation of on-site construction conditions or workmanship, it may not be possible to set up large-scale truck cranes and tower cranes and other hoisting equipment, making it difficult to remove the roof panels.

Contents of the invention

The object of the present invention is to provide a method for dismantling a rake hoisting frame and a reinforced concrete trough roof panel, so as to complete the dismantling of the roof panel when the construction site is limited, reduce the demolition time, and improve the working efficiency.

In order to achieve the above object, according to one aspect of the present invention, a rake-type hoisting frame is provided for removing reinforced concrete trough-shaped roof panels, the rake-type hoisting frame includes: two bottom brackets, horizontally arranged parallel to each other, And the two bottom brackets are located outside the opposite ends of the length direction of the roof panel to be removed; two oblique brackets, one end of the two oblique brackets are respectively fixed to one end of the two bottom brackets, and parallel to each other Extend upward obliquely; two vertical supports have the same length and are respectively fixedly connected between the fixed bottom support and the inclined support to support the inclined support; a plurality of horizontal supports are connected between the two between the bottom brackets and between the two inclined brackets. Wherein, two manual hoists are arranged on the part extending obliquely upward from the connection point with the respective vertical support of each inclined support, for hoisting at the four corners of the roof panel to lift the roof panel, and The horizontal distance between the two manual hoists arranged on the same inclined support is smaller than the width of the roof panel. Preferably, the angle between the inclined support and the horizontal plane is 30°-50°.

Preferably, the bottom bracket, the vertical bracket and the oblique bracket are all I-shaped steel.

According to another aspect of the present invention, there is also provided a method for removing reinforced concrete trough roof panels, the removal method comprising: installing a row of gantry hoisting frames on the roof to be removed; A track beam extending along the row of gantry hoisting frames is installed on the bracket, and a hoist and an electric hoist are installed on the track beam; edge welding is performed on the connection between the row of gantry hoisting frames and the roof; a piece of the roof is removed The waterproof layer, leveling layer and skylight water retaining window on the roof slab are to be removed, and the filler between the roof slabs is removed; the steel structure connectors between the roof slab and the roof truss beam are cut; the above-mentioned rake hoisting frame is installed on the roof slab place; lay a slideway under the rake-type hoisting frame, the slideway is perpendicular to the row of gantry hoisting frames and extends to the bottom of the row of gantry hoisting frames; use four manual hoists of the rake-type hoisting frame to lift the roof panel; adjust Four manual hoists, place the roof panel on the slideway; use the winch to pull the roof panel along the slideway to the bottom of the row of gantry hoisting frames; use the row of gantry hoisting frames to pull the roof panel along the slideway to the row of gantry cranes One end of the rack; use the electric hoist to place the roof panel to the predetermined position.

Preferably, use four manual hoists to lift the roof panel for a certain distance, slowly lower the front two manual hoists while slowly lifting the rear two manual hoists, so that the roof panel moves towards the slideway below the rake hoisting frame, when the roof panel is at least When 2/3 is projected on the slideway, utilize the four manual hoists to place the roof panel on the slideway.

Preferably, a traction hole is opened at the rear of the roof panel to connect with the traction rope of the hoist so that the roof panel is pulled by the hoist to the bottom of the row of gantry hoisting frames.

Preferably, the distance between two adjacent gantry hoisting frames of the row of gantry hoisting frames is greater than the length of the roof panel.

With the rake-type hoisting frame and removal method provided by the present invention, the demolition of reinforced concrete trough-shaped roof panels can be completed and the demolition time can be shortened when the roof demolition site is small and limited so that large cranes cannot be used , Improve work efficiency and safety.

Description of drawings

Fig. 1 is the structural representation of the rake type suspension frame according to the embodiment of the present invention;

Fig. 2 is a schematic structural view of a gantry hoisting frame according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the welding state between the gantry hoisting frame and the roof according to an embodiment of the present invention;

Fig. 4 is a schematic layout diagram of a rake type hoisting frame and a column of gantry hoisting frames according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the state of using a rake hoisting frame to lift a roof panel according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the state of placing the roof panel on the slideway using a rake hoisting frame according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of the plane pulling process of the roof panel according to the embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the present invention, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of a rake hoisting frame according to an embodiment of the present invention.

Referring to Fig. 1, according to one aspect of the present invention, a rake-type hoisting frame 10 for removing reinforced concrete trough roof panels (hereinafter referred to as roof panels) is provided, and the rake-type hoisting frame 10 includes: two bottom brackets 101, arranged horizontally parallel to each other, and these two bottom brackets 101 are located outside the opposite ends of the length direction (perpendicular to the bottom brackets 101) of the roof panel W to be removed, that is, the distance between the two bottom brackets 101 should be Slightly longer than the length of the roof panel W; two oblique brackets 102, one end of the two oblique brackets 102 are respectively fixed to one end of the two bottom brackets 101, and extend upwards obliquely parallel to each other; two vertical brackets 103, the same length , and are respectively fixedly connected between the fixed bottom bracket 101 and the oblique bracket 102 to support the oblique bracket 102; a plurality of horizontal brackets 104 are connected between the two bottom brackets 101 and the two oblique brackets 102, To strengthen the intensity of the rake type suspension frame 10. In addition, multiple brackets can be connected between the two bottom brackets 101 and the two oblique brackets 102 to further strengthen the strength of the rake suspension frame 10 .

Two manual hoists 105 (see Fig. 5 and Fig. 6 ) are arranged on the part of each oblique support 102 that extends obliquely upward from the connection point with the respective vertical support 103, for hoisting on the four sides of the roof panel W. corner, to lift the roof panel W, and the horizontal distance between the two manual hoists 105 arranged on the same inclined support 102 is less than the width of the roof panel, as shown in Figure 6. Specifically, on each slanting support 102 , two manual hoists 105 can be respectively connected to the extended end of the slanting support 102 and the joint between the slanting support 102 and the vertical support 103 .

The inclination angle between the inclined bracket 102 and the horizontal plane may be approximately 30°-50°, preferably approximately 45°.

Each support on the rake type suspension frame 10 can adopt I-beam to make. For example, it can be made of I25 ^# I-beam. In addition, for the bottom bracket 101, the vertical bracket 103 and the oblique bracket 102, since the roof panel W is subjected to a relatively large tensile force when lifting the roof panel W, these brackets can be made of stronger I-beams to avoid the Bending deformation or tilting occurs during lifting.

According to another aspect of the present invention, a method for dismantling a reinforced concrete channel roof panel is also provided, and the dismantling method of the present invention will be described in detail below with reference to FIGS. 2 to 7 .

A row of gantry hoisting frames 20 is installed on the roof to be removed (that is, the roof), and the row of gantry hoisting frames 20 is formed by arranging a plurality of gantry hoisting frames in a row. Each gantry hoisting frame all comprises two columns 203 and the top bracket 202 that is connected between the two columns 203, as shown in Figure 2, on the top bracket 202 of all gantry hoisting frames, is connected with track beam 70 penetratingly, in An electric hoist 201 and a hoist 204 are hung on the track beam 70 , and the electric hoist 201 and the hoist 204 can move along the track beam 70 to transport the roof panel W. Of course, the hoist 204 can also be installed in other ways, for example, as shown in FIG. 7 , as long as it can pull the roof panel W.

For example, in the embodiment of the present invention, for a roof with a span of 30m, a gantry hoisting frame can be provided every 6m, and a total of 72 gantry hoisting frames are provided, extending from one end of the roof to the other end. In addition, I16 ^# I-beam can be used to make the column 203, I25a ^# I-beam can be used as the top bracket 202, and I32a ^# I-beam can be used as the track beam 70. The electric hoist 201 hung is a 5t electric hoist, and the hoist 204 can be It is a 1t hoist.

It should be noted that, in order to facilitate subsequent roof panels to be pulled under the row of gantry hoisting frames 20, the distance between two adjacent gantry hoisting frames 20 is preferably greater than the length of each roof panel, so as to avoid the Adjust the angle of the roof panel to save demolition time.

The row of gantry hoisting frames 20 can be installed on the edge of the roof. During installation, edge welding 30 can be performed between each gantry hoisting frame and the roof, as shown in Figure 3, to strengthen the connection between each gantry hoisting frame and the roof. The strength of the connection between them prevents the gantry hoisting frame 20 from moving or tipping when performing operations, and can play a role in protecting the roof truss beams. For example, δ=20mm wrap welding can be used.

Next, process a rectangular roof panel W that is about to be removed on the roof. Specifically, remove the waterproof layer, leveling layer, and skylight water blocking window on the roof panel W, and remove the filler between the roof panels W. Then, cutting the steel structure connecting piece between the roof panel W and the roof truss beams, so as to separate the roof panel W, and remove the roof panel W subsequently.

Install the rake type suspension frame 10 at the roof panel W, specifically, the two bottom brackets 101 of the rake type suspension frame 10 should be located at both sides of the length direction of the roof panel W, and the cross brackets 104 should not be located on the roof panel W. Above W but behind the roof panel W, the orthographic projections of the four hand hoists 105 on the inclined bracket 102 should be located substantially on the roof panel W.

Utilize two steel ropes with a diameter of about 17.5mm to make the sealing rope 40, connect between the rake type hoisting frame 10 and the gantry hoisting frame of the row, and the two sealing ropes 40 can be tensioned by a 3t manual block.

Then, a slideway 50 is laid under the rake-type hoisting frame 10 , the slideway 50 is perpendicular to the row of gantry hoisting frames 20 , and extends to the bottom of the row of gantry hoisting frames 20 , as shown in FIG. 4 . The slideway 50 can also be made of two parallel I-beams with sufficient strength, for example, 25a ^# I-beams. In addition, the span of the slideway 50 is smaller than the distance between the two bottom brackets 101 of the rake suspension frame 10 and the length of the roof panel W.

Hanging holes are provided at approximately four corners of the roof panel W, and the four manual hoists 105 of the rake lifting frame 10 are hoisted at the four hanging holes. Start the manual hoist 105 to lift the roof panel W up a certain distance, as shown in FIG. 5 . During this lifting process, the rising path of the roof panel W may not be vertical, but it is better to keep the roof panel W rising horizontally. In addition, since the horizontal distance between the two manual hoists 105 on the same inclined support 102 is smaller than the width of the roof panel W, the pull ropes of the two manual hoists 105 are not vertical when lifting the roof panel W, as For the manual hoists 105 shown by dotted lines in FIG. 6 , at this moment, the force of the two manual hoists 105 at the rear is greater than that of the two front manual hoists 105 .

Subsequently, the four manual hoists 105 are adjusted to place the roof panel W on the slideway 50 .

Specifically, after the four manual hoists 105 have lifted the roof panel W for a certain distance, for example, about 400mm-500mm, slowly put down the front two manual hoists while slowly lifting the rear two manual hoists, so that the roof panel faces the rake. The slideway 50 below the hoisting frame 10 is transferred, as shown in Figure 6, when at least 2/3 of the roof panel W is orthographically projected on the slideway 50, the four manual hoists 105 are used to place the roof panel W on the slideway 50, the manual hoist 105 shown in solid line in FIG. 6 .

Then, connect the traction rope 60 of the hoist 204 on the row of gantry hoisting frames 20 to the pre-opened traction hole at the rear of the roof panel W (wherein there may be multiple traction holes), and pull the roof panel W along the slideway. 50 is slowly drawn to below the row of gantry hoisting frames 20, as shown in Figure 7, this process is plane movement.

It should be noted that during the plane movement, the angle of the roof panel W may be deflected, causing the roof panel W to collide with the gantry hoisting frame 20 when approaching the gantry hoisting frame 20, as shown in FIG. 7 , at this time, the angle of the roof panel W needs to be adjusted in advance to ensure that the roof panel W can be smoothly pulled to the bottom of the gantry hoisting frame 20 .

Then, use the electric hoist 201 on the row of gantry hoisting frames 20 to hoist the roof panel W along the track beam 70 to one end of the row of gantry hoisting frames 20 . Then, the electric hoist 201 is used to place the roof panel W to a predetermined position, for example, to lower the roof panel W to the ground.

After removing a row of roof panels perpendicular to the row of gantry hoisting frames, when removing another row of adjacent roof panels, the rake-type hoisting frame can be moved to the frontmost roof panel of the row of roof panels, to dismantle. That is, when one of the roof panels is removed, it is only necessary to move the rake lifting frame to the roof panel.

With the rake-type hoisting frame and removal method provided by the present invention, the demolition of reinforced concrete trough-shaped roof panels can be completed and the demolition time can be shortened when the roof demolition site is small and limited so that large cranes cannot be used , Improve work efficiency and safety. In addition, when the roof panel is removed by using the rake-type hoisting frame and the removal method, the construction in the factory building or the construction equipment on the ground do not need to stop, so that the working efficiency can be further improved.

In addition, various improvements and improvements can be made to the rake hanger provided above, for example, various reinforcing ribs or beams are welded on the rake hanger to increase the strength. It is also possible to improve and perfect the connection between the gantry hoisting frame or the gantry hoisting frame and the rake hoisting frame. When located on the auxiliary slideway, the electric hoist is used to pull the roof panel to one end of the gantry hoisting frame, which helps to reduce the force on the electric hoist. Alternatively, the above demolition method can also be improved and perfected. For example, a protective shed and a safety net can be hung on the lower chord of the roof truss beam to avoid affecting the normal construction in the factory building and improve safety. In addition, the timing of the dismantling method does not have to be exactly as described above. In addition, the rake hoisting frame and demolition method provided above can also be applied to other demolition constructions.

The specific embodiments of the present invention have been described in detail above. Although some embodiments have been shown and described, those skilled in the art should understand that without departing from the principle and spirit of the present invention whose scope is defined by the claims and their equivalents Under the circumstances, these embodiments can be modified and improved, and these modifications and improvements should also be within the protection scope of the present invention.

Claims (7)

1. A rake-type hoisting frame for removing reinforced concrete trough roof panels, characterized in that, the rake-type hoisting frame comprises: Two bottom brackets are horizontally arranged parallel to each other, and the two bottom brackets are located outside the opposite ends of the length direction of the roof panel to be removed; Two oblique brackets, one end of the two oblique brackets is respectively fixed to one end of the two bottom brackets, and extends obliquely upward parallel to each other; two vertical supports with the same length, and are respectively fixedly connected between the fixed bottom support and the oblique support to support the oblique support; a plurality of horizontal brackets connected between the two bottom brackets and between the two oblique brackets, Wherein, two manual hoists are arranged on the part extending obliquely upward from the connection point with the respective vertical support of each inclined support, for hoisting at the four corners of the roof panel to lift the roof panel, and The horizontal distance between the two manual hoists arranged on the same inclined support is smaller than the width of the roof panel. 2. The rake-type hoisting frame according to claim 1, characterized in that, the angle between the inclined bracket and the horizontal plane is 30°-50°. 3. The rake-type hoisting frame according to claim 1, characterized in that, the bottom bracket, the vertical bracket and the inclined bracket are all I-beams. 4. A method for removing a reinforced concrete trough roof panel, characterized in that it comprises: Install a row of gantry hoisting frames on the roof to be removed, install a rail beam extending along the row of gantry hoisting frames on the top bracket of the row of gantry hoisting frames, and install hoist and electric hoist on the rail beams; Carry out hemming welding at the junction between the row of gantry hoisting frames and the roof; Remove the waterproof layer, leveling layer, skylight water retaining window on a roof panel to be removed on the roof, and remove the filler between the roof panels; Cut the steel structure connection between the roof panel and the roof truss beam; Installing the rake type hoisting frame as described in any one of claims 1 to 3 at the roof panel; A slideway is laid below the rake-type hoisting frame, and the slideway is perpendicular to the row of gantry hoisting frames and extends to below the row of gantry hoisting frames; Lifting of the roof panels with four hand hoists of the rake hoisting frame; Adjust the four manual hoists to place the roof panels on the slides; Utilize the hoist to pull the roof panel to the bottom of the row of gantry hoisting frames along the slideway; Utilize the row of gantry hoisting frames to pull the roof panel to one end along the slideway; Use the electric hoist to place the roof panel to the predetermined position. 5. The demolition method according to claim 4, characterized in that four manual hoists are used to lift the roof panel for a certain distance, and the two front manual hoists are slowly lowered while the rear two manual hoists are slowly lifted, so that the roof panel faces the rake type. The slideway below the hoisting frame is transferred, and when at least 2/3 of the roof panel is projected on the slideway, the four manual hoists are used to place the roof panel on the slideway. 6. The demolition method according to claim 4, characterized in that, a traction hole is opened at the rear of the roof panel to connect with the traction rope of the hoist so that the roof panel is pulled by the hoist to the bottom of the row of gantry hoisting frames. 7. The removal method according to claim 4, wherein the distance between two adjacent gantry hoisting frames of the row of gantry hoisting frames is greater than the length of the roof panel.

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