CN116104298A - Tripod jacking formwork platform for elevator shaft construction and construction method - Google Patents

Abstract

The invention discloses a tripod jacking formwork platform for elevator shaft construction, which comprises: the lower tripod supporting mechanism is arranged on the wall of the elevator shaft; the lifting mechanism is arranged on the lower tripod supporting mechanism; the upper tripod supporting mechanism is arranged on the lifting mechanism; the template and hanging frame system is arranged on the upper tripod supporting mechanism and used for installing and fixing the template on the elevator shaft pouring operation position to perform main body pouring; the lower tripod supporting mechanism is arranged at the bottom layer of the elevator shaft, the lifting mechanism lifts the upper tripod supporting mechanism, the template and the hanging frame system enter an upper operation area, and the template and the hanging frame system are used for pouring the elevator shaft. The invention also discloses an elevator shaft construction method, which comprises the following steps: step one, constructing an N+1 layer elevator shaft; step two, lifting the supporting mechanism of the upper tripod; step three, lifting the lower tripod supporting mechanism; fourthly, constructing an N+2 layer elevator shaft; the above steps are cycled.

Description

A tripod jacking formwork platform and construction method for elevator shaft construction

technical field

The invention relates to the technical field of building construction equipment, in particular to a tripod jacking formwork platform and a construction method for elevator shaft construction.

Background technique

With the continuous development of urban construction, there are more and more high-rise and super high-rise buildings. In the construction of high-rise or super high-rise buildings, the construction of elevator shafts is undoubtedly a difficulty. It is impossible to directly support the formwork and its supporting frame on this floor. If it is erected from the bottom layer, not only the cost is high, but also due to the super high frame body, higher safety requirements and high technical difficulty; second, due to the small space of the elevator shaft , workers erect formwork and its brackets in a narrow environment, the operation process is more difficult, resulting in low construction efficiency; third, in order to set up horizontal fulcrums, holes are generally left on the wall, which requires later repairs, which not only increases labor input , may also cause certain quality hidden dangers; fourth, construction personnel work at heights and lack footholds; fifth, need to separately set up edge and hole protection; sixth. The installation process of the formwork requires the cooperation of the tower crane, which takes up the effective working time of large machinery.

Based on the above reasons, engineers and technicians appeared a tripod construction platform for elevator shaft construction during the construction process, which solved the difficult problem of elevator shaft construction to a certain extent. However, the tripod platform still needs the cooperation of tower cranes. In the process, the tripod needs to be tilted, the center of gravity is shifted, manual adjustment is required, and there are major safety hazards in the adjustment process.

Contents of the invention

In view of the above problems, the present invention provides a tripod jacking formwork platform and a construction method for elevator shaft construction.

In order to achieve the above object, the technical solution of the present invention is specifically as follows:

A tripod jacking formwork platform for elevator shaft construction, comprising:

The lower tripod support mechanism is installed on the wall of the elevator shaft;

The lifting mechanism is arranged on the lower tripod support mechanism;

The upper tripod support mechanism is arranged on the lifting mechanism;

Formwork and hanger system, set on the upper tripod support mechanism, used to install and fix the formwork on the elevator shaft pouring operation position for main body pouring;

Among them, the lower tripod support mechanism is set at the bottom of the elevator shaft, and the lifting mechanism lifts the upper tripod support mechanism, so that the formwork and hanger system enters the upper working area, and the elevator shaft is poured using the formwork and hanger system.

The lower tripod support mechanism and the upper tripod support mechanism have the same structure, and the lower tripod support mechanism includes:

Two profiled steel oblique beams arranged in parallel;

Two columns arranged in parallel, the bottoms of which are fixedly connected with the bottoms of the two shaped steel slanted beams, and the tops of which are on the same level as the tops of the two shaped steel slanted beams, and the tops of the columns and the tops of the shaped steel slanted beams are interconnected by horizontal beams Connection, horizontal steel beams and longitudinal secondary beams are set on the horizontal beams to form a horizontal installation surface;

The horizontal steel plate is laid on the horizontal installation surface.

The contact between the bottom of the profiled steel inclined beam and the elevator shaft wall is provided with self-elastic stretching feet, which are convenient for the lower tripod support mechanism and the upper tripod support mechanism to be tightened and separated from the elevator shaft shaft wall when they rise.

The lifting mechanism is a scissor lift.

The formwork and hanger system includes:

The mold hanging bracket is vertically arranged on the upper tripod support mechanism;

The shaft mold of the elevator shaft is set on the outside of the formwork support, and its top is suspended on the formwork support.

The hanging mold support includes:

lattice column;

The outrigger beam is set on the top of the lattice column and connected to the top of the elevator shaft subform by a steel wire rope.

The present invention also provides a kind of elevator shaft construction method, it comprises the following steps:

Step 1, N+1 floor elevator shaft construction

In the initial state, the elevator shaft construction on and below the N floor has been completed, and the platform is installed according to the requirements, so that the lower tripod support mechanism is located on the N-1 floor, the upper tripod support mechanism and the elevator are located on the N floor, and the formwork and hanger system is located on the N+ 1st floor, and connect all parts firmly as required; start the construction of the elevator shaft on the N+1 floor, complete the binding of steel bars on the N+1 floor, formwork installation, concrete pouring, and the concrete reaches the specified strength, and remove the elevator shaft shaft formwork The horizontal corrugation of the elevator shaft mold shrinks, so that the formwork is separated from the concrete wall of the elevator shaft;

Step 2. Lift the upper tripod support mechanism

Start the motor, the motor rotates, the reducer drives the screw to rotate forward at low speed, and further drives the scissor support frame to extend, pushing the upper tripod support mechanism up. Press down, and the self-elastic stretching feet will retract without hindering the smooth rise of the upper tripod support mechanism. When the self-elastic stretching legs pass through the hoistway area and reach the elevator door area on the N+1 floor, the squeezing force disappears, and the self-elastic stretching legs pop out. At this time, the upper tripod support mechanism has reached the N+1 floor, the motor rotates in the opposite direction, the scissor support frame shrinks, and the upper tripod support mechanism descends, so that the self-elastic stretching feet are placed on the N+1 floor, and the upper tripod is completed. Jacking operation of supporting mechanism;

Step 3: Lift the lower tripod support mechanism

After the upper tripod support mechanism is implemented, continue to reversely rotate the screw rod, and the scissor support frame will shrink further. At this time, since the upper tripod support mechanism has been fixed, the lower tripod support mechanism can be lifted, and the lower tripod support mechanism When the bottom is lifted to the hoistway area, under the extrusion of the hoistway wall, the self-elastic stretching legs are retracted, which does not hinder the smooth lifting of the lower tripod support mechanism. The pressure disappears, and the self-elastic stretching foot pops up. At this time, the lower tripod support mechanism has reached the N floor, the motor rotates forward, the scissor support frame is extended, and the lower tripod support mechanism is lowered, so that the self-elastic stretching foot is implemented to N Layer, to complete the lifting operation of the lower tripod support mechanism;

Step 4, N+2 floor elevator shaft construction

At this time, the tripod jacking formwork platform has completed the jacking operation of the elevator shaft construction on the new floor, the lower tripod support mechanism is located on the N floor, the upper tripod support mechanism and the scissor lift 4 are located on the N+1 floor, and the formwork And the hanger system is located on the N+2 floor, and the elevator shaft construction on the N+2 floor can be started;

Repeat the above steps to complete the construction of the whole building.

Compared with the prior art, the present invention has the following beneficial effects:

1. When the present invention is used in the construction of elevator shafts in new high-rise buildings, it does not need to rely on the cooperation of tower cranes, and can independently complete all the construction tasks of the concrete construction of elevator shafts, releasing the effective working time of tower cranes and improving construction efficiency.

2. The invention has the advantages of simple structure, easy operation and high degree of mechanization, and provides a reliable construction platform for the concrete engineering of the elevator shaft. The scissor support frame is controlled by the screw rod. Due to the self-locking performance of the screw rod, the jacking and lifting process is safe and reliable.

3. Thanks to this platform, it is not necessary to completely dismantle the formwork during construction of the formwork support, and it is not necessary to separately set up a temporary platform for placing the formwork. It only needs to slightly separate the formwork from the concrete wall, and the whole can be lifted to the upper floor for construction. The work intensity and operation time of formwork construction are saved.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is an exploded view of the present invention.

Fig. 3 is a structural schematic diagram of the upper tripod support mechanism.

Figure 4 is a schematic diagram of the connection of the elevator.

Figure 5 is an exploded view of the formwork and hanger system.

Fig. 6 is a schematic diagram of the initial state when the construction method of the present invention is in operation.

Fig. 7 is a schematic diagram of the completion of concrete pouring in this layer when the construction method of the present invention is in operation.

Fig. 8 is a schematic diagram of the jacking upper tripod support mechanism during operation of the construction method of the present invention.

Fig. 9 is a schematic diagram of the upper tripod support mechanism and the formwork being lifted into place during the operation of the construction method of the present invention.

Fig. 10 is a schematic diagram of the tripod support mechanism under the lifting during operation of the construction method of the present invention.

Fig. 11 is a schematic diagram of the completion of the jacking operation during the operation of the construction method of the present invention.

Fig. 12 is a flow chart of the construction method of the present invention.

Among them, 1. Upper tripod support mechanism; 2. Lower tripod support mechanism; 3. Self-elastic stretching feet; 4. Lift: 401, motor; 402, reducer; 403, screw; 404; scissors support frame; 5. Formwork and hanger system: 501, elevator shaft sub-form; 502 hanging formwork support: 521 lattice column; 522, outrigger beam.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

As shown in Figures 1 and 2, a tripod jacking formwork platform for elevator shaft construction includes: a lower tripod support mechanism 2, which is installed on the elevator shaft wall; a lifting mechanism 4, which is arranged on the lower tripod On the support mechanism 2; the upper tripod support mechanism 1 is arranged on the lifting mechanism 4; the formwork and hanger system 5 is arranged on the upper tripod support mechanism 1, which is used to install and fix the formwork on the elevator shaft pouring operation position, The main body is poured; among them, the lower tripod support mechanism 2 is set at the bottom of the elevator shaft, and the lifting mechanism 4 lifts the upper tripod support mechanism 1, so that the formwork and hanger system 5 enters the upper working area, and the formwork and hanger system is used to 5 Carry out elevator shaft pouring.

As shown in Figure 2 and Figure 3, the lower tripod support mechanism 2 has the same structure as the upper tripod support mechanism 1, and the lower tripod support mechanism 2 includes: two parallel profiled steel oblique beams; two parallel vertical columns , the bottom of which is fixedly connected to the bottom of the two shaped steel inclined beams in pairs, and its top is on the same level as the top of the two shaped steel inclined beams, and the top of the column and the top of the shaped steel inclined beams are connected to each other through a horizontal beam, and the horizontal beam passes through Set horizontal horizontal steel beams and longitudinal secondary beams to form a horizontal installation surface; horizontal steel plates are laid on the horizontal installation surface.

As shown in Figure 2, self-elastic stretching feet 3 are provided at the contact between the bottom of the shaped steel inclined beam and the elevator shaft wall, so that when the lower tripod support mechanism 2 and the upper tripod support mechanism 1 rise, they will contact with the top of the elevator shaft wall. Tight and loose.

As shown in Figures 2 and 4, the lifting mechanism 4 is a scissor lift.

As shown in Fig. 2 and Fig. 5, the formwork and hanger system 5 includes: hanging formwork bracket 502, which is vertically arranged on the upper tripod support mechanism 1; The top is suspended on the hanging formwork support 502.

As shown in FIG. 5 , the formwork support 502 includes: a lattice column 521 ; an outrigger beam 522 is arranged on the top of the lattice column 521 and connected to the top of the elevator shaft subform 501 through a wire rope.

As shown in Fig. 6 to Fig. 11 and Fig. 12, the present invention also provides an elevator shaft construction method, which includes the following steps:

Step 1, N+1 floor elevator shaft construction

In the initial state, the elevator shaft construction on and below the N floor has been completed, and the platform is installed according to the requirements, so that the lower tripod support mechanism 2 is located on the N-1 floor, the upper tripod support mechanism 1 and the elevator 4 are located on the N floor, and the formwork and hanger system 5 Located on the N+1 floor, and connect all parts firmly according to the requirements; start the elevator shaft construction on the N+1 floor, complete the steel bar binding on the N+1 floor, formwork installation, concrete pouring, and the concrete reaches the specified strength, demolish The horizontal corrugation of the elevator shaft sub-form 501, the elevator shaft sub-form 501 shrinks, so that the formwork is separated from the concrete wall of the elevator shaft;

Step 2. Lift the upper tripod support mechanism

Start the motor 401, the motor rotates, the reducer 402 drives the screw 403 to rotate forward at a low speed, further drives the scissor support frame 404 to extend, and pushes the upper tripod support mechanism 1 to rise. When the bottom of the upper tripod rises to the hoistway area, Under the extrusion of the hoistway wall, the self-elastic extension foot 3 retracts without hindering the smooth rise of the upper tripod support mechanism 1. When the self-elastic extension foot 3 passes through the hoistway area and reaches the elevator door area on the N+1 floor, the extrusion force disappears, and the self-elastic stretching foot 3 pops up. At this time, the upper tripod support mechanism 1 has reached the N+1 floor, the motor rotates in reverse, the scissor type support frame 404 shrinks, and the upper tripod support mechanism 1 descends, so that the self-elastic stretch The foot 3 is implemented to the N+1 floor, and the jacking operation of the upper tripod support mechanism 1 is completed;

Step 3: Lift the lower tripod support mechanism

After the upper tripod support mechanism 1 is implemented, continue to reversely rotate the screw rod 403, and the scissors type support frame 404 will shrink further. At this time, since the upper tripod support mechanism 1 has been fixed, the lower tripod support mechanism 2 can be lifted. When the bottom of the lower tripod support mechanism 2 is lifted to the hoistway area, under the extrusion of the hoistway wall, the self-elastic extension foot 3 retracts, which does not hinder the smooth lifting of the lower tripod support mechanism 2. When the self-elastic extension foot 3 passes through the hoistway area, When reaching the elevator door area on the N floor, the extrusion force disappears, and the self-elastic stretching foot 3 pops up. At this time, the lower tripod support mechanism 2 has reached the N floor, the motor 401 rotates forward, the scissor support frame 404 stretches, and the lower triangle The frame support mechanism 2 descends, so that the self-elastic stretching feet 3 are implemented to the N floor, and the lifting operation of the lower tripod support mechanism 2 is completed;

Step 4, N+2 floor elevator shaft construction

At this time, the tripod jacking formwork platform has completed the jacking operation of the elevator shaft construction on the new floor, the lower tripod support mechanism 2 is located on the N floor, the upper tripod support mechanism 1 and the scissor lift 4 are located on the N+1 floor , the formwork and hanger system 5 is located on the N+2 floor, and the elevator shaft construction on the N+2 floor can be started;

Repeat the above steps to complete the construction of the whole building.

It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principle of the present invention, and not to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention shall fall within the protection scope of the present invention. Furthermore, it is intended that the appended claims of the present invention embrace all changes and modifications that come within the scope and metesques of the appended claims, or equivalents of such scope and metes and bounds.

Claims (7)

1. A tripod jacking formwork platform for hoistway construction, comprising:

the lower tripod supporting mechanism (2) is arranged on the wall of the elevator shaft;

the lifting mechanism (4) is arranged on the lower tripod supporting mechanism (2);

the upper tripod supporting mechanism (1) is arranged on the lifting mechanism (4);

the template and hanging frame system (5) is arranged on the upper tripod supporting mechanism (1) and is used for installing and fixing the template at the elevator shaft pouring operation position to perform main body pouring;

the lower tripod supporting mechanism (2) is arranged at the bottom layer of the elevator shaft, the lifting mechanism (4) lifts the upper tripod supporting mechanism (1) so that the template and the hanging frame system (5) enter an upper operation area, and the template and the hanging frame system (5) are used for pouring the elevator shaft.

2. A tripod jacking formwork platform for use in hoistway construction as defined in claim 1, wherein: the lower tripod supporting mechanism (2) and the upper tripod supporting mechanism (1) are identical in structure, and the lower tripod supporting mechanism (2) comprises:

two profile steel inclined beams arranged in parallel;

the bottoms of the two parallel upright posts are fixedly connected with the bottoms of the two section steel inclined beams in a pairwise corresponding manner, the tops of the two upright posts and the tops of the two section steel inclined beams are on the same horizontal plane, the tops of the upright posts and the tops of the section steel inclined beams are connected with each other through horizontal cross beams, and the horizontal cross beams form a horizontal mounting surface through arranging horizontal steel beams and longitudinal secondary beams;

the horizontal steel plate is paved on the horizontal installation surface.

3. The tripod jacking formwork platform for the construction of the elevator shaft according to claim 2, wherein the contact part of the bottom of the profile steel inclined beam and the elevator shaft wall is provided with a self-bouncing extension foot (3) so as to be convenient for jacking and separating with the elevator shaft wall when the lower tripod supporting mechanism (2) and the upper tripod supporting mechanism (1) are lifted.

4. Tripod jacking formwork platform for use in elevator hoistway construction according to claim 1, characterized in that the lifting mechanism (4) is a scissor lift.

5. Tripod jacking formwork platform for use in elevator hoistway construction according to claim 1, characterized in that said formwork and pylon system (5) comprises:

the die hanging bracket (502) is vertically arranged on the upper tripod supporting mechanism (1);

the elevator shaft sub-die (501) is sleeved outside the die hanging bracket (502), and the top of the elevator shaft sub-die is hung on the die hanging bracket (502).

6. A tripod jacking formwork platform for elevator shaft construction as defined in claim 5, wherein said formwork hanging bracket (502) comprises:

-lattice columns (521);

and the cantilever beam (522) is arranged at the top of the lattice column (521) and is connected with the top of the elevator shaft sub-mold (501) through a steel wire rope.

7. The elevator shaft construction method is characterized by comprising the following steps of:

step one, construction of an N+1 layer elevator shaft

In an initial state, the construction of the elevator shaft of N layers and below is completed, a platform is installed according to the requirement, a lower tripod supporting mechanism (2) is positioned on the N-1 layer, an upper tripod supporting mechanism (1) and a lifter 4 are positioned on the N layer, a template and a hanging frame system (5) are positioned on the N+1 layer, and all parts are firmly connected according to the requirement; starting to perform construction of the elevator shaft of the layer N+1, finishing binding steel bars of the layer N+1, installing a template, pouring concrete, dismantling transverse edges of the elevator shaft sub-mould (501) and contracting the elevator shaft sub-mould (501) to separate the template from the elevator shaft concrete wall, wherein the concrete reaches the specified strength;

step two, lifting up tripod supporting mechanism

Starting a motor (401), driving a screw (403) to rotate at a low speed in a forward direction through a speed reducer (402), further driving a scissor type support frame (404) to extend, pushing an upper tripod support mechanism (1) to rise, retracting a self-ejecting foot (3) under extrusion of a well wall when the bottom of the upper tripod rises to the well area, preventing the upper tripod support mechanism (1) from rising smoothly, and enabling the extrusion force to disappear when the self-ejecting foot (3) passes through the well area and reaches an N+1 layer elevator door area, and ejecting the self-ejecting foot (3), wherein at the moment, the upper tripod support mechanism (1) reaches an N+1 layer, the motor rotates reversely, the scissor type support frame (404) is contracted, and the upper tripod support mechanism (1) descends, so that the self-ejecting foot (3) is enabled to be in an N+1 layer, and the jacking operation of the upper tripod support mechanism (1) is completed;

step three, lifting lower tripod supporting mechanism

After the upper tripod supporting mechanism (1) is implemented, the screw (403) is continuously rotated in the opposite direction, the scissor type supporting frame (404) is further contracted, at this time, because the upper tripod supporting mechanism (1) is fixed, the lower tripod supporting mechanism (2) can be lifted, when the bottom of the lower tripod supporting mechanism (2) is lifted to a well region, under the extrusion of the well wall, the self-bouncing foot (3) is retracted, the lower tripod supporting mechanism (2) is not blocked from being smoothly lifted, when the self-bouncing foot (3) passes through the well region and reaches an N-layer elevator door region, the extrusion force disappears, the self-bouncing foot (3) pops out, at the moment, the lower tripod supporting mechanism (2) reaches an N layer, the motor (401) rotates positively, the scissor type supporting frame (404) stretches, the lower tripod supporting mechanism (2) descends, the self-bouncing foot (3) is enabled to be implemented to the N layer, and the lifting operation of the lower tripod supporting mechanism (2) is completed;

step four, construction of N+2 layer elevator shaft

At this time, the tripod jacking mould frame platform has completed the jacking operation of the new layer of elevator shaft construction, the lower tripod supporting mechanism (2) is positioned on the N layer, the upper tripod supporting mechanism (1) and the scissor fork type lifter (4) are positioned on the N+1 layer, the mould plate and the hanging frame system (5) are positioned on the N+2 layer, and the elevator shaft construction of the N+2 layer can be started;

and (5) circulating the steps to finish the construction of the whole building.

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