CN112455512B - Method for conveying large-volume precast concrete flue by using hoistway type construction elevator - Google Patents

Abstract

A method for conveying a large-volume precast concrete flue by a shaft type construction lifter comprises the following steps: processing and manufacturing a special cart; loading the prefabricated concrete flue onto a special trolley; pushing the special cart for loading the precast concrete flue to a door opening of the construction elevator, and operating the special cart to move the precast concrete flue into a lift car of the construction elevator; and starting the construction elevator to lift the special trolley loaded with the precast concrete flue to the appointed floor. The invention has novel design, convenient use and easy operation, the pin shaft rotation joint between the upper end of the front inclined beam and the rectangular bracket is the balance gravity center point after the prefabricated concrete flue is loaded, the purpose of conveying the prefabricated concrete flue through the construction hoist is achieved by changing the posture of an object in the conveying process and without changing the gravity center of the object by utilizing the special cart, and the invention has the advantages of rapidness, convenience, labor saving and safety.

Description

Method for conveying large-volume precast concrete flue by using hoistway type construction elevator

Technical Field

The invention belongs to the technical field of building construction machinery equipment, and particularly relates to a method for conveying a large-volume precast concrete flue by a shaft type construction lifter.

Background

The prefabricated concrete flue has a large volume and a heavy weight in construction, and is transported to a designed installation position after being integrally manufactured in a production factory, and the prefabricated concrete flue has a length of 2850mm, a width of 600mm, a height of 400mm and a weight of 150kg. The existing construction method adopts 4 workers to manually lift and transport the prefabricated concrete flue into a construction elevator car, and the height of the door hole of the construction elevator car is 2000mm and the width of the door hole of the construction elevator car is 900mm, so that the prefabricated concrete flue is manually lifted and transported, the construction period is long, the efficiency is low, and the time of the construction elevator is occupied to cause waste.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a method for conveying a large-volume precast concrete flue by a shaft type construction lifter, which has the advantages of short time, low cost, high efficiency and low labor intensity.

In order to solve the technical problems, the invention adopts the following technical scheme: a method for conveying a large-volume precast concrete flue by a shaft type construction lifter comprises the following steps:

(1) Processing and manufacturing a special cart;

(2) Loading the prefabricated concrete flue onto a special trolley;

(3) Pushing the special cart for loading the precast concrete flue to a door opening of the construction elevator, and operating the special cart to move the precast concrete flue into a lift car of the construction elevator;

(4) Starting a construction elevator to lift a special cart loaded with the prefabricated concrete flue to a specified floor;

(5) And (3) pushing the prefabricated concrete flue out of the car of the construction elevator by operating the special trolley.

The special cart in step (1) comprises a chassis frame, wherein bearing wheels are arranged at the bottom of the chassis frame, a left bracket and a right bracket are respectively arranged on the left side and the right side of the chassis frame, a rectangular bracket is rotatably arranged between the upper parts of the left bracket and the right bracket, the rear side of the lower end of the rectangular bracket is contacted with the front side of the chassis frame, at least two flat fork rods are vertically arranged on the front side of the lower end of the rectangular bracket, the flat fork rods are located at the same height and are arranged at left and right intervals, and a hand pushing frame is respectively arranged on the front side of the left bracket and the front side of the right bracket.

The chassis frame adopts four 10# channel steel head and tail to weld and becomes the rectangle structure, and the interpolation of 10# channel steel on chassis frame left side and right side is equipped with the afterburning pole that can stretch out and draw back from beginning to end, and the afterburning pole adopts the 48 mm's of diameter steel pipe, and the open side of 10# channel steel on chassis frame left side and right side all vertically is equipped with the blend stop that is used for spacing afterburning pole.

The left support and the right support are identical in structure and symmetrically arranged left and right, each of the left support and the right support comprises a front oblique beam and a rear oblique beam, the front oblique beam is arranged in a front low and rear high inclined mode, the rear oblique beam is arranged in a front high and rear low inclined mode, the lower end of the front oblique beam is fixedly connected to the front side of the chassis frame, the lower end of the rear oblique beam is fixedly connected to the rear side of the chassis frame, the upper end of the rear oblique beam is fixedly connected to the upper part of the rear side of the front oblique beam, the left side and the right side of the upper part of the rectangular bracket are respectively connected to the upper part of the front oblique beam on the left side and the upper part of the front oblique beam on the right side through a pin roll, and the distance between the pin roll and the bottom of the rectangular bracket is equal to twice the distance between the pin roll and the top of the rectangular bracket; a cross beam arranged along the left-right horizontal direction is arranged between the rear sides of the two front oblique beams, and is positioned between the lower part of the pin shaft and the upper part of the upper end of the rear oblique beam; the front oblique beam and the cross beam are both 10# channel steel, and the rear oblique beam is 50 multiplied by 50 angle steel.

The pushing handle frame comprises a handle rod which is arranged along the front-back direction, the rear end of the handle rod is fixedly connected to the upper part of the front side of the front oblique beam, an anti-skid sleeve is arranged outside the front end of the handle rod, and a supporting rod is arranged between the middle part of the handle rod and the lower part of the front oblique beam.

The bearing wheels are four, the front two are directional wheels, and the rear two are universal wheels.

The process of the step (2) comprises the following steps: aligning the special cart with a prefabricated concrete flue to be transported, wherein the prefabricated concrete flue is in an upright state, and the prefabricated concrete flue is 2850mm in height, 600mm in width, 400mm in thickness and 150kg in weight; the boosting rods arranged in the left side and the right side of the chassis frame are pulled out backwards, the rear side part of the special trolley is lifted upwards by taking the two directional wheels at the front side as supporting points, the special trolley is pushed forwards after the rectangular bracket is parallel to the prefabricated concrete flue to be in an upright state, the flat fork rod is inserted into the bottom of the prefabricated concrete flue, the bottom of the prefabricated concrete flue is supported on the flat fork rod, and then the middle part of the precast concrete flue is fixedly connected with the upper part of the rectangular bracket by using a binding belt, and pressure is applied to the stressing rod towards the ground at the moment, so that the special cart loaded with the precast concrete flue returns to a balanced and stable state, namely, two universal wheels at the rear side are supported to the ground, and the two stressing rods are pushed into the chassis frame forwards, thereby completing the loading preparation and transportation state.

The process of the step (3) comprises the following steps: the anti-skid sleeves at the front ends of the hand bars are respectively held by two hands, the special trolley for loading the precast concrete flue is pushed to the door opening of the construction elevator, at the moment, one end of the flat fork bar at the bottom of the rectangular bracket is rotated upwards by taking two pin shafts as fulcrums, so that the rectangular bracket is parallel to the floor plate, namely the precast concrete flue is horizontal, and at the moment, the special trolley for loading the precast concrete flue is pushed into the elevator car of the construction elevator; when the length of the rectangular frame pushed into the elevator car of the construction elevator exceeds 1/2 of the total length of the rectangular frame, one end of the flat fork rod of the rectangular bracket is rotated downwards by taking the two pin shafts as supporting points until the rear part of the lower side of the rectangular bracket is contacted with the front side of the chassis frame to be restored to a balanced and stable state, and then the rectangular bracket is continuously pushed into the elevator car until the prefabricated concrete flue and the special trolley are completely pushed into the elevator car.

The process of the step (5) comprises the following steps: and when the right side of the upper part of the precast concrete flue is moved to be in contact with the inner side wall of the top of the door opening of the construction elevator, stopping moving the special trolley, enabling one end of a flat fork rod at the bottom of the rectangular bracket to upwards rotate by taking two pin shafts as supporting points, enabling the rectangular bracket to be parallel to a floor plate, namely, the precast concrete flue to be horizontal, pushing the special trolley for loading the precast concrete flue out of a lift car of the construction elevator, then enabling one end of the flat fork rod of the rectangular bracket to downwards rotate by taking the two pin shafts as supporting points until the rear part of the lower side of the rectangular bracket is in contact with the front side of the chassis frame, and then moving the special trolley for loading the precast concrete flue to a construction site.

By adopting the technical scheme, the invention has the following technical effects:

the invention has novel design, convenient use and easy operation, the pin shaft rotation joint between the upper end of the front inclined beam and the rectangular bracket is the balance gravity center point after the prefabricated concrete flue is loaded, the purpose of conveying the prefabricated concrete flue is achieved by changing the gesture of an object in the conveying process and without changing the gravity center of the object by utilizing the special cart, and the method is faster, safer, more energy-saving and environment-friendly than the manual conveying method through practical application tests. The method has the advantages that the manual slow movement is avoided, the safety is that the transported precast concrete flue is always in a balanced state, the operation is stable and free of shaking, the energy conservation and the environmental protection are realized, no mechanical equipment is needed, no idle waste is generated, the method for transporting the precast concrete flue is low in cost, short in time and high in efficiency, a special cart is adopted to transport a large-size and ultra-long concrete flue to a set floor, meanwhile, the use mode of a construction lifter is expanded, the practicability is very high, and the method is a good method worthy of popularization.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic illustration of loading precast concrete channels onto a dedicated cart;

FIG. 3 is a schematic illustration of a special cart loaded with prefabricated concrete flues during normal transportation;

FIG. 4 is a schematic illustration of a special cart loaded with prefabricated concrete flues, immediately prior to entry into a construction elevator car;

FIG. 5 is a schematic illustration of a special purpose cart loaded with precast concrete channels in a first condition upon entry into a construction elevator car;

FIG. 6 is a schematic illustration of a special purpose cart loaded with precast concrete channels in a second condition upon entry into a construction elevator car;

fig. 7 is a schematic view of a special purpose cart loaded with prefabricated concrete flues after entering a construction elevator car.

Detailed Description

As shown in fig. 1 to 7, the method for conveying a large-volume precast concrete flue by a shaft type construction lifter comprises the following steps:

(1) A special cart 4 is manufactured;

(2) Loading the precast concrete flue 2 onto a special cart 4;

(3) Pushing a special trolley 4 for loading the precast concrete flue 2 to a door opening 1 of the construction elevator, and operating the special trolley 4 to move the precast concrete flue 2 into a car 3 of the construction elevator;

(4) Starting a construction elevator to lift the special cart 4 loaded with the precast concrete flue 2 to a specified floor;

(5) The special trolley 4 is operated to push the precast concrete flue 2 out of the lift car 3 of the construction lift.

The special cart 4 in the step (1) comprises a chassis frame 5, a bearing wheel 6 is arranged at the bottom of the chassis frame 5, a left support and a right support are respectively arranged on the left side and the right side of the chassis frame 5, a rectangular bracket 7 is rotatably arranged between the upper parts of the left support and the right support, the rear side of the lower end of the rectangular bracket 7 is contacted with the front side of the chassis frame 5, at least two flat fork rods 8 are vertically arranged on the front side of the lower end of the rectangular bracket 7, the flat fork rods 8 are positioned at the same height and are arranged at left and right intervals, and a push frame is respectively arranged on the front side of the left support and the front side of the right support.

The chassis frame 5 adopts four 10# channel steels to be welded end to form a rectangular structure, the 10# channel steels on the left side and the right side of the chassis frame 5 are internally provided with a stress application rod 9 which can stretch back and forth, the stress application rod 9 adopts a steel pipe with the diameter of 48mm, and the open sides of the 10# channel steels on the left side and the right side of the chassis frame 5 are vertically provided with baffle strips 10 for limiting the stress application rod 9.

The left bracket and the right bracket are identical in structure and symmetrically arranged left and right, each of the left bracket and the right bracket comprises a front oblique beam 11 and a rear oblique beam 12, the front oblique beam 11 is arranged in a front low and rear high inclined manner, the rear oblique beam 12 is arranged in a front high and rear low inclined manner, the lower end of the front oblique beam 11 is fixedly connected to the front side of the chassis frame 5, the lower end of the rear oblique beam 12 is fixedly connected to the rear side of the chassis frame 5, the upper end of the rear oblique beam 12 is fixedly connected to the upper part of the rear side of the front oblique beam 11, the left side and the right side of the upper part of the rectangular bracket 7 are respectively connected to the upper part of the front oblique beam 11 on the left side and the upper part of the front oblique beam 11 on the right side in a rotating manner through a pin shaft 13, and the distance between the pin shaft 13 and the bottom of the rectangular bracket 7 is equal to twice the distance between the pin shaft 13 and the top of the rectangular bracket 7; a cross beam 14 arranged along the left-right horizontal direction is arranged between the rear sides of the two front oblique beams 11, and the cross beam 14 is positioned between the lower part of the pin shaft 13 and the upper part of the upper end of the rear oblique beam 12; the front oblique beam 11 and the transverse beam 14 are respectively 10# channel steel, and the rear oblique beam 12 is 50 x 50 angle steel.

The pushing handle comprises a handle rod 15 arranged along the front-back direction, the rear end of the handle rod 15 is fixedly connected to the upper part of the front side of the front inclined beam 11, an anti-slip sleeve 16 is arranged outside the front end of the handle rod 15, and a supporting rod 17 is arranged between the middle part of the handle rod 15 and the lower part of the front inclined beam 11.

The bearing wheels 6 are provided with four, the front two are directional wheels, and the rear two are universal wheels.

The process of the step (2) comprises the following steps: aligning the special cart 4 with the prefabricated concrete flue 2 to be transported, wherein the prefabricated concrete flue 2 is in an upright state, and the prefabricated concrete flue 2 is 2850mm in height, 600mm in width, 400mm in thickness and 150kg in weight; the thrust loading device comprises a chassis frame 5, a special cart 4, a rectangular bracket 7, a flat fork rod 8, a rectangular bracket 2, a rectangular bracket 8 and a binding belt 18, wherein the thrust loading rods 9 are arranged in the left side and the right side of the chassis frame 5, the rear side of the special cart 4 is lifted upwards by taking two directional wheels on the front side as supporting points, the rectangular bracket 7 is parallel to the prefabricated concrete flue 2 in an erect state, the special cart 4 is pushed forwards, the flat fork rod 8 is inserted into the bottom of the prefabricated concrete flue 2, the bottom of the prefabricated concrete flue 2 is supported on the flat fork rod 8, the middle part of the prefabricated concrete flue 2 is fixedly connected with the upper part of the rectangular bracket 7 by the binding belt 18 (see figure 2), and at the moment, pressure is applied to the thrust loading rods 9 towards the ground direction, so that the special cart 4 loaded with the prefabricated concrete flue 2 returns to a balanced stable state, namely the two universal wheels on the rear side are supported to the ground, and the two thrust loading rods 9 are pushed forwards into the chassis frame 5 (see figure 3), so that the loading ready and conveying state is completed.

The process of the step (3) comprises the following steps: the anti-slip sleeves 16 at the front end parts of the hand bars 15 are respectively held by two hands, the special trolley 4 for loading the precast concrete flues 2 is pushed to the door opening 1 of the construction elevator, one end of the flat fork bar 8 at the bottom of the rectangular bracket 7 (see figure 3) is rotated upwards by taking the two pin shafts 13 as fulcrums at the moment, the rectangular bracket 7 is parallel to the floor plate, namely the precast concrete flues 2 are horizontal (see figure 4), and the special trolley 4 for loading the precast concrete flues 2 is pushed into the elevator car 3 of the construction elevator at the moment; when the rectangular frame is pushed into the elevator car 3 of the construction elevator by more than 1/2 of the total length of the rectangular frame, (see fig. 5) one end of the flat fork 8 of the rectangular bracket 7 is rotated downwards by taking the two pins 13 as supporting points until the rear part of the lower side of the rectangular bracket 7 is contacted with the front side of the chassis frame 5 to be restored to the balanced stable state, (see fig. 6) and then the rectangular bracket is continuously pushed into the elevator car 3 until the precast concrete flue 2 and the special trolley 4 are completely pushed into the elevator car 3.

The process of the step (5) comprises the following steps: when the right side of the upper part of the precast concrete chimney 2 moves to be in contact with the inner side wall at the top of the door opening 1 of the construction elevator (see fig. 6), the movement of the special trolley 4 is stopped, one end of a flat fork rod 8 at the bottom of the rectangular bracket 7 rotates upwards by taking two pin shafts 13 as supporting points, so that the rectangular bracket 7 is parallel to a floor plate, namely the precast concrete chimney 2 is horizontal (see fig. 5), at the moment, the special trolley 4 for loading the precast concrete chimney 2 is pushed out of a car 3 of the construction elevator (see fig. 4), then one end of the flat fork rod 8 of the rectangular bracket 7 rotates downwards by taking two pin shafts 13 as supporting points until the rear part of the lower side of the rectangular bracket 7 is in contact with the front side of the chassis frame 5, and then the special trolley 4 for loading the precast concrete chimney 2 is moved to a construction site.

The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.

Claims (1)

1. A method for conveying a large-volume precast concrete flue by a shaft type construction elevator is characterized by comprising the following steps of: the method comprises the following steps:

(1) Processing and manufacturing a special cart;

(2) Loading the prefabricated concrete flue onto a special trolley;

(3) Pushing the special cart for loading the precast concrete flue to a door opening of the construction elevator, and operating the special cart to move the precast concrete flue into a lift car of the construction elevator;

(4) Starting a construction elevator to lift a special cart loaded with the prefabricated concrete flue to a specified floor;

(5) Pushing the prefabricated concrete flue out of the car of the construction elevator by operating the special trolley;

the special cart in the step (1) comprises a chassis frame, wherein a bearing wheel is arranged at the bottom of the chassis frame, a left bracket and a right bracket are respectively arranged on the left side and the right side of the chassis frame, a rectangular bracket is rotationally arranged between the upper parts of the left bracket and the right bracket, the rear side of the lower end of the rectangular bracket is contacted with the front side of the chassis frame, at least two flat fork rods are vertically arranged on the front side of the lower end of the rectangular bracket, the flat fork rods are positioned at the same height and are arranged at left and right intervals, and a hand pushing frame is respectively arranged on the front side of the left bracket and the front side of the right bracket;

the chassis frame adopts a rectangular structure formed by welding four 10# channel steel end to end, stress application rods capable of stretching back and forth are inserted into the 10# channel steel on the left side and the right side of the chassis frame, the stress application rods adopt steel pipes with the diameter of 48mm, and blocking strips for limiting the stress application rods are vertically arranged on the open sides of the 10# channel steel on the left side and the right side of the chassis frame;

the left support and the right support are identical in structure and symmetrically arranged left and right, each of the left support and the right support comprises a front oblique beam and a rear oblique beam, the front oblique beam is arranged in a front low and rear high inclined mode, the rear oblique beam is arranged in a front high and rear low inclined mode, the lower end of the front oblique beam is fixedly connected to the front side of the chassis frame, the lower end of the rear oblique beam is fixedly connected to the rear side of the chassis frame, the upper end of the rear oblique beam is fixedly connected to the upper part of the rear side of the front oblique beam, the left side and the right side of the upper part of the rectangular bracket are respectively connected to the upper part of the front oblique beam on the left side and the upper part of the front oblique beam on the right side through a pin roll, and the distance between the pin roll and the bottom of the rectangular bracket is equal to twice the distance between the pin roll and the top of the rectangular bracket; a cross beam arranged along the left-right horizontal direction is arranged between the rear sides of the two front oblique beams, and is positioned between the lower part of the pin shaft and the upper part of the upper end of the rear oblique beam; the front oblique beam and the cross beam are respectively 10# channel steel, and the rear oblique beam is 50 multiplied by 50 angle steel;

the pushing hand rack comprises a hand rod which is arranged along the front-back direction, the rear end of the hand rod is fixedly connected to the upper part of the front side of the front oblique beam, an anti-skid sleeve is arranged outside the front end of the hand rod, and a supporting rod is arranged between the middle part of the hand rod and the lower part of the front oblique beam;

the four bearing wheels are arranged, the two front sides are directional wheels, and the two rear sides are universal wheels;

the process of the step (2) comprises the following steps: aligning the special cart with a prefabricated concrete flue to be transported, wherein the prefabricated concrete flue is in an upright state, and the prefabricated concrete flue is 2850mm in height, 600mm in width, 400mm in thickness and 150kg in weight; the method comprises the steps of drawing out stress application rods arranged in the left side and the right side of a chassis frame backwards, taking two directional wheels on the front side as supporting points, lifting the rear side part of a special trolley upwards, pushing the special trolley forwards after a rectangular bracket is parallel to a prefabricated concrete flue to be in an upright state, inserting a flat fork rod into the bottom of the prefabricated concrete flue, supporting the bottom of the prefabricated concrete flue on the flat fork rod, then fixedly connecting the middle part of the prefabricated concrete flue with the upper part of the rectangular bracket by using a binding belt, applying pressure to the stress application rods towards the ground at the moment, enabling the special trolley loaded with the prefabricated concrete flue to return to a balanced stable state, namely supporting two universal wheels on the rear side to the ground, and pushing the two stress application rods forwards into the chassis frame, so that a loading ready-to-transport state is completed;

the process of the step (3) comprises the following steps: the anti-skid sleeves at the front ends of the hand bars are respectively held by two hands, the special trolley for loading the precast concrete flue is pushed to the door opening of the construction elevator, at the moment, one end of the flat fork bar at the bottom of the rectangular bracket is rotated upwards by taking two pin shafts as fulcrums, so that the rectangular bracket is parallel to the floor plate, namely the precast concrete flue is horizontal, and at the moment, the special trolley for loading the precast concrete flue is pushed into the elevator car of the construction elevator; when the length of the rectangular frame pushed into the elevator car of the construction elevator exceeds 1/2 of the total length of the rectangular frame, one end of a flat fork rod of the rectangular bracket is rotated downwards by taking two pin shafts as supporting points until the rear part of the lower side of the rectangular bracket is contacted with the front side of the chassis frame to be restored to a balanced and stable state, and then the rectangular bracket is continuously pushed into the elevator car until the prefabricated concrete flue and the special trolley are completely pushed into the elevator car;

the process of the step (5) comprises the following steps: and when the right side of the upper part of the precast concrete flue is moved to be in contact with the inner side wall of the top of the door opening of the construction elevator, stopping moving the special trolley, enabling one end of a flat fork rod at the bottom of the rectangular bracket to upwards rotate by taking two pin shafts as supporting points, enabling the rectangular bracket to be parallel to a floor plate, namely, the precast concrete flue to be horizontal, pushing the special trolley for loading the precast concrete flue out of a lift car of the construction elevator, then enabling one end of the flat fork rod of the rectangular bracket to downwards rotate by taking the two pin shafts as supporting points until the rear part of the lower side of the rectangular bracket is in contact with the front side of the chassis frame, and then moving the special trolley for loading the precast concrete flue to a construction site.

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