CN112455512A - Method for conveying large-volume prefabricated concrete flue by hoistway type construction elevator - Google Patents
Method for conveying large-volume prefabricated concrete flue by hoistway type construction elevator Download PDFInfo
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- CN112455512A CN112455512A CN202011419799.XA CN202011419799A CN112455512A CN 112455512 A CN112455512 A CN 112455512A CN 202011419799 A CN202011419799 A CN 202011419799A CN 112455512 A CN112455512 A CN 112455512A
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- concrete flue
- precast concrete
- construction elevator
- flue
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/10—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by supports specially adapted to objects of definite shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/06—Hand moving equipment, e.g. handle bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/06—Hand moving equipment, e.g. handle bars
- B62B5/066—Handle bars rotatable about their longitudinal axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/006—Applications of loading and unloading equipment for lifts associated with buildings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
A method for conveying a large-volume precast concrete flue by a hoistway type construction elevator comprises the following steps: a special trolley for processing and manufacturing; loading the prefabricated concrete flue to a special trolley; pushing the special trolley loaded with the precast concrete flue to a door opening of a construction elevator, and operating the special trolley to move the precast concrete flue to a lift car of the construction elevator; and starting the construction elevator to lift the special cart for loading the precast concrete flue to the appointed floor. The invention has novel design, convenient use and easy operation, the rotating connection position of the pin shaft between the upper end of the front oblique beam and the rectangular bracket is a balance weight center point after loading the precast concrete flue, the aim of conveying the precast concrete flue by the construction lifter is achieved by changing the posture of an object without changing the gravity center of the object in the conveying process by using the special trolley, and the invention has the advantages of rapidness, convenience, labor saving and safety.
Description
Technical Field
The invention belongs to the technical field of construction machinery equipment, and particularly relates to a method for conveying a large-volume precast concrete flue by a hoistway type construction elevator.
Background
The prefabricated concrete flue is characterized in that a prefabricated concrete flue is arranged in construction, the prefabricated concrete flue is large in size and heavy in weight, the prefabricated concrete flue is integrally manufactured in a production plant and then conveyed to a designed installation position, the prefabricated concrete flue is 2850mm long, 600mm wide, 400mm high and 150kg heavy. The existing construction method adopts 4 laborers, and the prefabricated concrete flue is manually lifted and transported into a construction elevator car, wherein the height of a door opening of the construction elevator car is 2000mm, and the width of the door opening is 900mm, so that the construction period is long, the efficiency is low, and the time of the construction elevator is long, so that waste is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for conveying a large-volume precast concrete flue by using a hoistway type construction elevator, 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 hoistway type construction elevator comprises the following steps:
(1) a special trolley for processing and manufacturing;
(2) loading the prefabricated concrete flue to a special trolley;
(3) pushing the special trolley loaded with the precast concrete flue to a door opening of a construction elevator, and operating the special trolley to move the precast concrete flue to a lift car of the construction elevator;
(4) starting a construction elevator to lift the special cart loaded with the precast concrete flue to a specified floor;
(5) and operating the special trolley to push the precast concrete flue out of the lift car of the construction elevator.
The special cart in the step (1) comprises a chassis frame, bearing wheels are arranged at the bottom of the chassis frame, a left support and a right support are respectively arranged on the left side and the right side of the chassis frame, a rectangular bracket is rotatably arranged between the upper portions of the left support and the right support, the rear side of the lower end of the rectangular bracket is in contact 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 pushing handle frame is respectively arranged on the front side of the left support and the front.
The chassis frame adopts four 10# channel-section steels head and the tail welding and becomes the rectangle structure, and the interpolation of the 10# channel-section steel on chassis frame left side and right side is equipped with the stress application pole that can stretch out and draw back from beginning to end, and the stress application pole adopts the diameter to be 48 mm's steel pipe, and the equal vertical blend stop that is used for spacing stress application pole that is equipped with of the 10# channel-section steel open side on chassis frame left side and right side.
The left support and the right support are identical in structure and are symmetrically arranged left and right, the left support and the right support respectively comprise a front oblique beam and a rear oblique beam, the front oblique beam is arranged in a low-front-rear-high inclined mode, the rear oblique beam is arranged in a high-front-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 portion of the rear side of the front oblique beam, the left side and the right side of the upper portion of the rectangular bracket are respectively rotatably connected to the upper portion of the front oblique beam on the left side and the upper portion of the; a cross beam arranged along the left-right horizontal direction is arranged between the rear sides of the two front oblique beams, and the cross beam 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 made of 10# channel steel, and the rear oblique beam is made of 50 multiplied by 50 angle steel.
The handle pushing frame comprises a handrail arranged in the front-back direction, the rear end of the handrail is fixedly connected to the upper portion of the front side of the front oblique beam, an anti-skidding sleeve is arranged outside the front end of the handrail, and a supporting rod is arranged between the middle of the handrail and the lower portion of the front oblique beam.
The bearing wheel is equipped with four, and two of front side are directional wheels, and two of rear side are the universal wheel.
The process of the step (2) is specifically as follows: aligning the special cart to a prefabricated concrete flue to be conveyed, wherein the prefabricated concrete flue is in a vertical state, and the prefabricated concrete flue is 2850mm high, 600mm wide, 400mm thick and 150kg heavy; the special cart is pushed forwards, 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, then the middle of the prefabricated concrete flue is fixedly connected with the upper part of the rectangular bracket by a binding band, pressure is applied to the stress rod towards the ground at the moment, the special cart loaded with the prefabricated concrete flue returns to a balanced and stable state, namely, the two universal wheels on the rear side are supported on the ground, and the two stress rods are pushed forwards into the chassis frame, so that the loading preparation conveying state is completed.
The process of the step (3) is specifically as follows: the anti-skidding sleeves at the front end parts of the handrails are respectively held by two hands, the special trolley loaded with the precast concrete flue is pushed to a door opening of the construction elevator, one end of a flat fork rod at the bottom of the rectangular bracket is upwards rotated by taking two pin shafts as supporting points, the rectangular bracket is parallel to the floor plate, namely the precast concrete flue is horizontal, and the special trolley loaded with the precast concrete flue is pushed into a lift car of the construction elevator; when the rectangular frame is pushed into the lift car of the construction elevator, the length of the rectangular frame exceeds 1/2 of the total length of the rectangular frame, one end of a flat fork rod of a rectangular bracket is rotated downwards by taking two pin shafts as pivots until the rear part of the lower side of the rectangular bracket is contacted with the front side of the chassis frame to restore to a balanced and stable state, and then the rectangular bracket is continuously pushed into the lift car until the prefabricated concrete flue and the special trolley are completely pushed into the lift car of the construction elevator.
The process of the step (5) is specifically as follows: the special trolley is moved towards a door opening of the construction elevator, when the right side of the upper portion of the precast concrete flue moves to be in contact with the inner side wall of the top of the door opening of the construction elevator, the special trolley stops moving, one end of a flat fork rod at the bottom of a rectangular bracket upwards rotates by taking two pin shafts as supporting points, the rectangular bracket is parallel to a floor slab, namely the precast concrete flue is horizontal, the special trolley loaded with the precast concrete flue is pushed out of a car of the construction elevator, one end of the flat fork rod of the rectangular bracket downwards rotates by taking the two pin shafts as supporting points until the rear portion of the lower side of the rectangular bracket is in contact with the front side of a chassis frame and is recovered to be in a balanced and stable state, and then the special trolley loaded with the precast concrete flue is moved to a.
By adopting the technical scheme, the invention has the following technical effects:
the invention has novel design, convenient use and easy operation, the rotating connection position of the pin shaft between the upper end of the front oblique beam and the rectangular bracket is a balance weight center point after loading the precast concrete flue, the purpose of transporting the precast concrete flue is achieved by using a special cart in the transporting process without changing the gravity center of the object by changing the posture of the object, and the method is faster, safer, more energy-saving and environment-friendly than a manual transporting method through practical application tests. The method has the advantages that the slow movement of manpower is avoided, the method is safe, the conveyed precast concrete flue is always in a balanced state, the operation is stable and free of shaking, the method is energy-saving and environment-friendly, no mechanical equipment is needed to be purchased, no idle waste is generated, the precast concrete flue conveying method is low in cost, short in time and high in efficiency, a special trolley is adopted to convey the large-size and ultra-long concrete flue to a set floor, meanwhile, the use mode of a construction lifter is expanded, the method has strong practicability, 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 view of loading a precast concrete flue onto a special cart;
FIG. 3 is a schematic illustration of a special cart loaded with a prefabricated concrete flue during normal transport;
FIG. 4 is a schematic view of a special cart loaded with a precast concrete flue just prior to entering a construction elevator car;
FIG. 5 is a schematic view of a special cart loaded with a precast concrete flue in a first state upon entry into a construction elevator car;
FIG. 6 is a schematic view of the special cart loaded with the precast concrete flue in a second state upon entry into the construction elevator car;
figure 7 is a schematic view of a special cart loaded with a precast concrete flue after entering a construction elevator car.
Detailed Description
As shown in fig. 1-7, the method for transporting a large-volume precast concrete flue by a hoistway type construction elevator of the invention comprises the following steps:
(1) a special cart 4 for processing and manufacturing;
(2) loading the precast concrete flue 2 onto a special cart 4;
(3) pushing a special trolley 4 loaded with the precast concrete flue 2 to a door opening 1 of a construction elevator, and operating the special trolley 4 to move the precast concrete flue 2 into a lift car 3 of the construction elevator;
(4) starting a construction elevator to lift the special trolley 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 car 3 of the construction elevator.
The special cart 4 in the step (1) comprises a chassis frame 5, bearing wheels 6 are 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 portions of the left support and the right support, the rear side of the lower end of the rectangular bracket 7 is in contact 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 located at the same height and are arranged at left and right intervals, and a pushing hand frame is respectively arranged on the front side of the left support and the front.
The left support and the right support are identical in structure and are arranged in a bilateral symmetry mode, the left support and the right support respectively comprise a front oblique beam 11 and a rear oblique beam 12, the front oblique beam 11 is arranged in a low-front-rear-high inclined mode, the rear oblique beam 12 is arranged in a high-front-rear-low inclined mode, 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 portion of the rear side of the front oblique beam 11, the left side and the right side of the upper portion of the rectangular bracket 7 are rotatably connected to the upper portion of the front oblique beam 11 on the left side and the upper portion of the front oblique beam 11 on the right; 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 cross beam 14 are both made of 10# channel steel, and the rear oblique beam 12 is made of 50 multiplied by 50 angle steel.
The pushing hand frame comprises a handrail 15 arranged in the front-back direction, the rear end of the handrail 15 is fixedly connected to the upper portion of the front side of the front oblique beam 11, an anti-skidding sleeve 16 is arranged outside the front end of the handrail 15, and a supporting rod 17 is arranged between the middle of the handrail 15 and the lower portion of the front oblique beam 11.
The bearing wheels 6 are four, the two front sides are directional wheels, and the two rear sides are universal wheels.
The process of the step (2) is specifically as follows: aligning the special cart 4 to the prefabricated concrete flue 2 to be transported, wherein the prefabricated concrete flue 2 is in a vertical state, and the prefabricated concrete flue 2 is 2850mm high, 600mm wide, 400mm thick and 150kg heavy; the reinforcing rods 9 arranged inside the left side and the right side of the chassis frame 5 are pulled out backwards, the front side two directional wheels are taken as fulcrums, the rear side part of the special cart 4 is lifted upwards, the rectangular bracket 7 is parallel to the vertical state of the prefabricated concrete flue 2, 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, then the middle part of the prefabricated concrete flue 2 is fixedly connected with the upper part of the rectangular bracket 7 by a binding band 18 (see figure 2), at the moment, pressure is applied to the reinforcing rods 9 in the ground direction, the special cart 4 loaded with the prefabricated concrete flue 2 returns to a balanced and stable state, namely, the two universal wheels on the rear side are supported to the ground, the two reinforcing rods 9 are pushed forwards into the chassis frame 5 (see figure 3), and the loading preparation and transportation state is.
The process of the step (3) is specifically as follows: the anti-skid sleeves 16 at the front end parts of the handrails 15 are respectively held by two hands, the special cart 4 loaded with the precast concrete flues 2 is pushed to the door opening 1 of the construction elevator, (see fig. 3) at the moment, one end of the flat fork rod 8 at the bottom of the rectangular bracket 7 is upwards rotated by taking two pin shafts 13 as fulcrums, so that the rectangular bracket 7 is parallel to a floor slab, namely, the precast concrete flues 2 are horizontal (see fig. 4), and at the moment, the special cart 4 loaded with the precast concrete flues 2 is pushed into the car 3 of the construction elevator; when the rectangular frame is pushed into the car 3 of the construction elevator to exceed 1/2 of the total length of the rectangular frame, (see fig. 5) one end of the flat fork rod 8 of the rectangular bracket 7 is rotated downwards by taking two pin shafts 13 as pivots until the lower rear part of the rectangular bracket 7 is contacted with the front side of the chassis frame 5 to restore to a balanced and stable state, (see fig. 6) then the rectangular bracket is continuously pushed into the car 3 until the precast concrete flue 2 and the special trolley 4 are completely pushed into the car 3 of the construction elevator.
The process of the step (5) is specifically as follows: moving the special cart 4 towards the door opening 1 of the construction lifter, stopping the movement of the special cart 4 when the right side of the upper part of the precast concrete flue 2 moves to be contacted with the inner side wall of the top of the door opening 1 of the construction lifter (see figure 6), rotating one end of a flat fork rod 8 at the bottom of a rectangular bracket 7 upwards by taking two pin shafts 13 as supporting points to ensure that the rectangular bracket 7 is parallel to a floor slab, i.e. the precast concrete flue 2 is in the horizontal state (see fig. 5), at this time, the special cart 4 carrying the precast concrete flue 2 is pushed out of the car 3 of the construction elevator (see fig. 4), then one end of the flat fork rod 8 of the rectangular bracket 7 is rotated downwards by taking two pin shafts 13 as pivots until the lower rear part of the rectangular bracket 7 is contacted with the front side of the chassis frame 5 to restore to a balanced and stable state, (see figure 3) and then the special cart 4 for loading the precast concrete flue 2 is moved to a construction site.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. A method for conveying a large-volume precast concrete flue by a hoistway type construction elevator is characterized by comprising the following steps: the method comprises the following steps:
(1) a special trolley for processing and manufacturing;
(2) loading the prefabricated concrete flue to a special trolley;
(3) pushing the special trolley loaded with the precast concrete flue to a door opening of a construction elevator, and operating the special trolley to move the precast concrete flue to a lift car of the construction elevator;
(4) starting a construction elevator to lift the special cart loaded with the precast concrete flue to a specified floor;
(5) and operating the special trolley to push the precast concrete flue out of the lift car of the construction elevator.
2. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator according to claim 1, characterized in that: the special cart in the step (1) comprises a chassis frame, bearing wheels are arranged at the bottom of the chassis frame, a left support and a right support are respectively arranged on the left side and the right side of the chassis frame, a rectangular bracket is rotatably arranged between the upper portions of the left support and the right support, the rear side of the lower end of the rectangular bracket is in contact 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 pushing handle frame is respectively arranged on the front side of the left support and the front.
3. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator as claimed in claim 2, wherein the method comprises the following steps: the chassis frame adopts four 10# channel-section steels head and the tail welding and becomes the rectangle structure, and the interpolation of the 10# channel-section steel on chassis frame left side and right side is equipped with the stress application pole that can stretch out and draw back from beginning to end, and the stress application pole adopts the diameter to be 48 mm's steel pipe, and the equal vertical blend stop that is used for spacing stress application pole that is equipped with of the 10# channel-section steel open side on chassis frame left side and right side.
4. The method for conveying the large-volume precast concrete flue by the well type construction elevator according to the claim 2 or 3, characterized in that: the left support and the right support are identical in structure and are symmetrically arranged left and right, the left support and the right support respectively comprise a front oblique beam and a rear oblique beam, the front oblique beam is arranged in a low-front-rear-high inclined mode, the rear oblique beam is arranged in a high-front-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 portion of the rear side of the front oblique beam, the left side and the right side of the upper portion of the rectangular bracket are respectively rotatably connected to the upper portion of the front oblique beam on the left side and the upper portion of the; a cross beam arranged along the left-right horizontal direction is arranged between the rear sides of the two front oblique beams, and the cross beam 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 made of 10# channel steel, and the rear oblique beam is made of 50 multiplied by 50 angle steel.
5. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator as claimed in claim 4, wherein the method comprises the following steps: the handle pushing frame comprises a handrail arranged in the front-back direction, the rear end of the handrail is fixedly connected to the upper portion of the front side of the front oblique beam, an anti-skidding sleeve is arranged outside the front end of the handrail, and a supporting rod is arranged between the middle of the handrail and the lower portion of the front oblique beam.
6. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator according to claim 5, wherein the method comprises the following steps: the bearing wheel is equipped with four, and two of front side are directional wheels, and two of rear side are the universal wheel.
7. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator according to claim 5, wherein the method comprises the following steps: the process of the step (2) is specifically as follows: aligning the special cart to a prefabricated concrete flue to be conveyed, wherein the prefabricated concrete flue is in a vertical state, and the prefabricated concrete flue is 2850mm high, 600mm wide, 400mm thick and 150kg heavy; the special cart is pushed forwards, 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, then the middle of the prefabricated concrete flue is fixedly connected with the upper part of the rectangular bracket by a binding band, pressure is applied to the stress rod towards the ground at the moment, the special cart loaded with the prefabricated concrete flue returns to a balanced and stable state, namely, the two universal wheels on the rear side are supported on the ground, and the two stress rods are pushed forwards into the chassis frame, so that the loading preparation conveying state is completed.
8. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator as claimed in claim 7, wherein the method comprises the following steps: the process of the step (3) is specifically as follows: the anti-skidding sleeves at the front end parts of the handrails are respectively held by two hands, the special trolley loaded with the precast concrete flue is pushed to a door opening of the construction elevator, one end of a flat fork rod at the bottom of the rectangular bracket is upwards rotated by taking two pin shafts as supporting points, the rectangular bracket is parallel to the floor plate, namely the precast concrete flue is horizontal, and the special trolley loaded with the precast concrete flue is pushed into a lift car of the construction elevator; when the rectangular frame is pushed into the lift car of the construction elevator, the length of the rectangular frame exceeds 1/2 of the total length of the rectangular frame, one end of a flat fork rod of a rectangular bracket is rotated downwards by taking two pin shafts as pivots until the rear part of the lower side of the rectangular bracket is contacted with the front side of the chassis frame to restore to a balanced and stable state, and then the rectangular bracket is continuously pushed into the lift car until the prefabricated concrete flue and the special trolley are completely pushed into the lift car of the construction elevator.
9. The method for conveying the large-volume precast concrete flue by the hoistway-type construction elevator according to claim 8, characterized in that: the process of the step (5) is specifically as follows: the special trolley is moved towards a door opening of the construction elevator, when the right side of the upper portion of the precast concrete flue moves to be in contact with the inner side wall of the top of the door opening of the construction elevator, the special trolley stops moving, one end of a flat fork rod at the bottom of a rectangular bracket upwards rotates by taking two pin shafts as supporting points, the rectangular bracket is parallel to a floor slab, namely the precast concrete flue is horizontal, the special trolley loaded with the precast concrete flue is pushed out of a car of the construction elevator, one end of the flat fork rod of the rectangular bracket downwards rotates by taking the two pin shafts as supporting points until the rear portion of the lower side of the rectangular bracket is in contact with the front side of a chassis frame and is recovered to be in a balanced and stable state, and then the special trolley loaded with the precast concrete flue is moved to a.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011419799.XA CN112455512B (en) | 2020-12-07 | 2020-12-07 | Method for conveying large-volume precast concrete flue by using hoistway type construction elevator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011419799.XA CN112455512B (en) | 2020-12-07 | 2020-12-07 | Method for conveying large-volume precast concrete flue by using hoistway type construction elevator |
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| CN112455512B CN112455512B (en) | 2023-07-14 |
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| CN112455512B (en) | 2023-07-14 |
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