A house building construction unloading platform and construction method

Abstract

The application relates to a house building construction unloading platform, which comprises a load base installed on a floor, a conveying mechanism arranged at the load base, the conveying mechanism comprising a conveying table for conveying building materials and a conveying track installed in the load base, sliding pulleys being fixed at the bottom of the conveying table and being slidably connected to the load base, a conveying plate for conveying the building materials being accommodated in the load base, the conveying plate being reversibly extended on the left and right sides, the conveying track being arranged on the conveying plate and being curvedly extended towards the left and right sides of the conveying plate, and the pulleys being slid along the conveying track, and a construction method of the house building construction unloading platform. The movable conveying table and the conveying plate supporting the sliding of the conveying table are arranged, the conveying plate is reversibly extended on the left and right sides, the conveying table is used for conveying the building materials to the left and right sides of a construction floor along the conveying track, the manual conveying distance between the unloading platform and the building material placing position in the construction floor is shortened, and the unloading convenience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a house construction unloading platform and a construction method. BACKGROUND

[0002] In house construction, building materials need to be transported into the building for construction. Since the tower crane cannot directly deliver the building materials into the building, the method commonly used in construction is to build an unloading platform outside the construction floor, and the tower crane hoists the building materials onto the unloading platform.

[0003] The existing Chinese patent with publication number CN105350789A discloses a building construction unloading platform device, which comprises a platform assembly and a protection assembly. The platform assembly comprises a plurality of cross beams and a plurality of longitudinal beams, and the cross beams and the longitudinal beams are fixedly connected to each other. The protection assembly comprises a plurality of support rods and a plurality of protective nets.

[0004] For the related technology in the above, the applicant believes that the unloading platform is usually located in the middle of the construction floor. In order to avoid obstructing the construction space, the building materials on the unloading platform often need to be placed at the left and right side walls in the construction floor. At present, it is still relied on manual transportation, but the unloading platform and the placement position still have a long transportation distance, which is relatively laborious for the construction personnel. Therefore, the current unloading platform still needs to be improved. SUMMARY

[0005] In order to shorten the manual transportation distance of the unloading platform and the building material placement position in the construction floor, and improve the unloading convenience of the building materials on the unloading platform, the present application provides a house construction unloading platform and a construction method.

[0006] The house construction unloading platform provided by the present application adopts the following technical solution:

[0007] A house construction unloading platform comprises a load base installed on a floor slab. A transportation mechanism is arranged at the load base. The transportation mechanism comprises a transportation table for transporting building materials and a conveying track installed in the load base. A plurality of pulleys are fixedly arranged at the bottom of the transportation table and slidably connected to the load base. A conveying plate for transporting building materials is accommodated in the load base. The left and right sides of the conveying plate can be reversely extended. The conveying track is arranged on the conveying plate and extends towards the left and right sides of the conveying plate. The pulleys slide along the conveying track.

[0008] By adopting the above technical scheme, the movable conveying table and the conveying plate supporting the sliding of the conveying table are arranged, and the conveying plate is arranged in a structure capable of reversely extending to the left and right sides, and extends to the left and right sides in the construction floor, so that the conveying table can conveniently convey the building materials to the left and right sides in the construction floor along the conveying track, effectively shortening the manual conveying distance of the unloading platform and the building material placing position in the construction floor, and improving the unloading convenience of the building materials on the unloading platform.

[0009] Preferably, the conveying plate movably connects the extension plates arranged in an up-down staggered manner, and the extension plates reversely move to the two sides of the conveying plate respectively; the conveying track includes curved rail slides and straight rail slides, the curved rail slides are arranged on the conveying plate and extend to the two sides of the conveying plate respectively, and the straight rail slides are arranged on the opposite extension plates respectively and are connected with the curved rail slides on the corresponding side; the conveying table enters any straight rail slide on the two extension plates along the curved rail slide.

[0010] By adopting the above technical scheme, the up-down staggered arrangement of the extension plates can make the left and right extension plates have a longer extension range; the curved rail slides and the straight rail slides guide the sliding of the conveying table, so that the feeding process is more convenient.

[0011] Preferably, the two side walls of the conveying plate are respectively fixed with arc-shaped guide plates, the guide plates respectively extend downward to the corresponding extension plates, and the guide plates are provided with guide grooves corresponding to the curved rail slides; and the guide plates are positioned by the positioning structure.

[0012] By adopting the above technical scheme, the guide plates can limit the extension plates accommodated in the conveying plate on one hand, and can position the extension plates and guide the pulleys to slide into the extension plates from the conveying plate on the other hand after the extension plates are extended; and the guide plates are positioned by the positioning structure.

[0013] Preferably, the guide plates are rotatably connected to the side walls of the conveying table by torsional springs, the positioning structure includes positioning rods and positioning grooves, the positioning rods are fixed below the two ends of the guide plates, the positioning grooves are arranged on the extension plates and correspond to the positioning rods, and the torsional springs abut against the positioning rods inserted into the positioning grooves.

[0014] By adopting the above technical scheme, the torsional springs have abutting force and deformation force, so that the extension plates can be fixed by the cooperation of the positioning rods and the positioning grooves after the extension plates are extended out of the conveying plate, and the extension plates can also be prevented from retracting, the structural stability is maintained, and the conveying table can smoothly feed.

[0015] Preferably, a handle is fixed to the front side of the conveying table, and the conveying table is positioned on the object-carrying base by the abutting structure.

[0016] Preferably, the abutting structure comprises abutting plates arranged oppositely on the object supporting base and rotatable, and first abutting grooves opened on the front ends of the two side walls of the conveying table, the abutting plates are bent, and the abutting plates are rotatable to be positioned in the corresponding first abutting grooves and to position the front end of the conveying table through the linkage structure.

[0017] By adopting the above technical scheme, the abutting plates and the first abutting grooves cooperate with the linkage structure to limit and fix the conveying table, so as to realize the positioning of the conveying table relative to the object supporting base and improve the relative stability of the conveying table and the object supporting base when the building materials are placed on the conveying table.

[0018] Preferably, a plurality of shock-absorbing springs abutting on the bottom of the conveying table are fixed on the object supporting base at intervals, and the shock-absorbing springs are arranged in a staggered manner with the pulleys, the linkage structure comprises limiting springs, the pulleys are arranged oppositely on the conveying table, and a plurality of pulleys are arranged longitudinally on the same side, the limiting springs are arranged at the front ends of the opposite pulleys respectively, the limiting springs are connected with the corresponding abutting plates, and the abutting plates are moved, the limiting springs are moved and give way to the pulleys.

[0019] By adopting the above technical scheme, the shock-absorbing springs have the effects of pressure relief and shock resistance, and have the protection effect on the pulleys; the limiting springs abut on the front ends of the pulleys to fix the conveying table in a front and back limiting manner; the abutting plates and the limiting springs are connected, the movement of the limiting springs is synchronously controlled by the movement of the abutting plates, so that the unlocking of the conveying table can be realized synchronously, the fixing effect of the conveying table is better, and the unlocking process of the conveying table is more convenient.

[0020] Preferably, the linkage structure further comprises a horizontal rod, a vertical rod and a deformable plug, the horizontal rod is movably connected horizontally to the bottom of the object supporting base and supports the limiting springs; the vertical rod is fixed to the horizontal rod and movably connected horizontally to the side wall of the object supporting base, and the plug is fixed to the abutting plate; the vertical rod is provided with a plug groove for the deformation of the plug to be inserted, the plug is inserted into the plug groove and abuts against the back side of the vertical rod, when the abutting plate is out of the first abutting groove, the plug abuts against the back side of the vertical rod and slides horizontally, the limiting springs are staggered with the pulleys, and the end of the horizontal rod and the corresponding side wall of the object supporting base can be magnetically fixed.

[0021] By adopting the above technical scheme, the horizontal rod supports the limiting springs, the vertical rod realizes the connection with the abutting plate, and the deformable plug is more easily inserted into the vertical rod and drags the vertical rod to slide, so that the abutting plate can drive the movement of the vertical rod and the limiting springs; after the limiting springs are staggered with the pulleys, the limiting springs are magnetically fixed, and the stability is higher.

[0022] Preferably, the conveying plate is fixed to the object table by a fixing member; the fixing member is a fixing block fixed to the cross rod, a fixing groove is formed on the front side of the conveying plate, a longitudinal through displacement slot is formed on one side of the fixing groove, and the fixing block is positioned in the fixing groove; when the limiting spring is out of position with the pulley, the fixing block moves to the displacement slot; a second abutting groove is formed on the side wall of the end of the displacement slot away from the fixing groove, and the fixing block can enter the second abutting groove.

[0023] By adopting the above technical scheme, the fixing block is positioned in the fixing groove on the front side of the conveying plate, and the conveying plate is limited; when the fixing block moves to the displacement slot, the conveying plate can slide out of the object table; and the fixing block entering the second abutting groove can improve the stability of the conveying plate after being pulled out.

[0024] In a second aspect, the application provides a construction method of a house construction unloading platform, which adopts the following technical scheme:

[0025] A construction method of a house construction unloading platform, comprising the following steps:

[0026] When the tower crane is used to transport building materials to the transport table, the transport table needs to be fixed, at this time, the abutting plate is rotated and clamped and positioned in the first abutting groove, and the insertion block is inserted into the vertical rod, and the limiting spring abuts against the front end of the pulley;

[0027] When the feeding to the floor is started, the abutting plate is first caused to be out of the first abutting groove, the vertical rod and the cross rod drive the limiting spring to be out of position with the pulley, and at the same time, the fixing block is also moved from the fixing groove to the displacement slot; the conveying plate is extended to the front end of the object table by hand, and the opposite extension plates are extended to the two sides of the conveying plate by hand;

[0028] With the movement of the extension plates, the guide plates are rotated under the action of the torsion spring until the positioning rod is inserted into the positioning groove to fix the extension plates; then the transport table handle is held by hand, the pulley is moved along the curved rail slide and guided by the guide plates to enter the straight rail slide on the extension plate to reach the side corresponding to the building material placement of the floor.

[0029] In summary, the application has at least one of the following beneficial technical effects:

[0030] 1. A movable transport table and a conveying plate supporting the sliding of the transport table are provided, and the conveying plate is provided as a structure that can be reversibly extended to the left and right sides, and is extended to the left and right sides of the construction floor, so that the building materials can be conveniently transported to the left and right sides of the construction floor along the conveying rail, effectively shortening the manual conveying distance of the building materials between the unloading platform and the building material placement in the construction floor, and improving the unloading convenience of the building materials on the unloading platform;

[0031] 2. The damping spring plays a role of reducing pressure and resisting shock, and protects the pulley. The abutting plate and the first abutting groove abut and position the upper part of the transport table. The limiting spring abuts the front end of the pulley and the lower part of the transport table, and cooperates to limit and fix the transport table, so as to realize the positioning of the transport table relative to the material carrying base, and improve the relative stability of the transport table and the material carrying base when the building materials are placed on the transport table. The abutting plate and the limiting spring are connected through the horizontal rod and the vertical rod, the movement of the limiting spring is synchronously controlled by the movement of the abutting plate, so that the unlocking of the transport table can be realized synchronously, the fixing effect of the transport table is better, and the unlocking process of the transport table is more convenient.

[0032] 3. The fixing block fixed on the horizontal rod can be positioned in the fixing groove on the front side of the conveying plate, and the conveying plate is limited. When the fixing block moves to the accommodation groove, the conveying plate can slide out of the material carrying base. The fixing block and the horizontal rod are linked, so that the movement of the abutting plate can synchronously drive the movement of the limiting spring and the fixing block, that is, the transport table and the conveying plate can be unlocked at the same time, the linkage of the structure is stronger, and the unlocking operation of the transport table and the conveying plate can be completed synchronously. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic diagram of an embodiment of the application;

[0034] Figure 2 is a structural schematic diagram of an embodiment of the application, in which the transport table bottom rollers, the damping spring and the limiting spring of the material carrying base are hidden;

[0035] Figure 3 is a partial cross-sectional schematic diagram of the connection relationship between the abutting plate, the vertical rod and the horizontal rod of the embodiment of the application;

[0036] Figure 4 is a partial exploded structural schematic diagram of the cooperation between the guide plate and the extension plate of the embodiment of the application.

[0037] Mark 1, material carrying base; 11, damping spring; 2, transport mechanism; 21, transport table; 211, pulley; 212, handle; 22, conveying track; 221, curved rail slide; 222, straight rail slide; 3, abutting structure; 31, abutting plate; 32, first abutting groove; 4, linkage structure; 41, limiting spring; 42, horizontal rod; 43, vertical rod; 44, plug; 5, conveying plate; 51, fixing groove; 52, accommodation groove; 521, second abutting groove; 6, fixing block; 7, extension plate; 8, guide plate; 81, guide sliding groove; 9, positioning structure; 91, positioning rod; 92, positioning groove; 10, torsion spring. DETAILED DESCRIPTION

[0038] The application will be further described in detail below with reference to the drawings.

[0039] The embodiment of the application discloses a house building construction unloading platform Figure 1 , comprising a carrying base 1 installed on a floor, a conveying mechanism 2 is arranged at the carrying base 1, the conveying mechanism 2 comprises a conveying table 21 for conveying building materials and installed in the carrying base 1, a handle 212 is fixed to the front side of the conveying table 21, and the conveying table 21 can slide out of the carrying base 1 for conveying the building materials.

[0040] Referring to Figure 1 , 2 , the bottom of the conveying table 21 is fixed with a plurality of pulleys 211 which are slidingly connected to the carrying base 1, the pulleys 211 are arranged in transverse opposition on the conveying table 21, and a plurality of pulleys 211 are arranged in longitudinal opposition on the same side, so as to assist the conveying table 21 to slide out of the carrying base 1; a plurality of shock-absorbing springs 11 are fixed to the carrying base 1 in a spaced manner and abut against the bottom of the conveying table 21, and the shock-absorbing springs 11 are arranged in a staggered manner with the pulleys 211, so as to reduce the extrusion force generated by the building materials on the pulleys 211 and avoid damage to the pulleys 211.

[0041] Referring to Figure 1 , 2 , the conveying table 21 is positioned on the carrying base 1 through an abutting structure 3; the abutting structure 3 comprises abutting plates 31 which are arranged in opposition on the carrying base 1 and can rotate and first abutting grooves 32 which are formed in the front ends of the two side walls of the conveying table 21, the abutting plates 31 are in a bent shape, and the abutting plates 31 can be positioned in the corresponding first abutting grooves 32 in a rotating manner.

[0042] Referring to Figure 1 , 2 , the abutting plates 31 further position the front end of the conveying table 21 through a linkage structure 4; the linkage structure 4 comprises limiting springs 41 which are arranged at the front ends of the opposite pulleys 211, the limiting springs 41 limit the front end pulleys 211, so that the positioning of the conveying table 21 relative to the carrying base 1 is realized through the cooperation of the abutting plates 31 and the first abutting grooves 32 and the synergistic effect of the limiting springs 41, and the relative stability of the conveying table 21 and the carrying base 1 when the building materials are placed on the conveying table 21 is improved.

[0043] Referring to Figure 2 , 3The linkage structure 4 also includes a horizontal bar 42, a vertical bar 43, and a deformable insert 44. The horizontal bar 42 is laterally movably connected to the bottom of the platform and supports the limiting spring 41. The vertical bar 43 is vertically fixed to the horizontal bar 42 and laterally movably connected to the side wall of the platform. The insert 44 is fixed to the abutment plate 31. The vertical bar 43 has a slot for the insert 44 to deform and insert. After the insert 44 is inserted into the slot, it can abut against the back of the vertical bar 43. When the abutment plate 31 rotates and disengages from the first abutment groove 32, the insert 44 abuts against the back of the vertical bar 43, causing the vertical bar 43 to slide laterally, so that the limiting spring 41 and the pulley 211 are misaligned, thereby making room for the sliding of the pulley 211. At this time, the end of the horizontal bar 42 and the corresponding side wall of the platform 1 can be magnetically fixed (not shown in the figure) to maintain a stable clearance space.

[0044] Reference Figure 1 , 3 The bottom of the loading platform 1 houses a transport plate 5 for transporting building materials. The transport plate 5 is fixed to the loading platform by a fastener. The fastener is a fixing block 6 fixed to the bottom of the crossbar 42. A fixing groove 51 is provided on the upper front side of the transport plate 5. A longitudinally penetrating clearance groove 52 is provided on one side of the fixing groove 51. The fixing block 6 is positioned in the fixing groove 51, so that the transport plate 5 is limited by the fixing block 6 and will not come out of the loading platform 1. When the limiting spring 41 is misaligned with the pulley 211, the fixing block 6 moves to the clearance groove 52. At this time, the transport plate 5 can slide out of the loading platform 1. It should be noted that the two ends of the rear side of the transport plate 5 extend and abut against the loading platform 1 to prevent the transport plate 5 from completely coming out of the loading platform 1.

[0045] Reference Figure 1 , 3 A second abutment groove 521 is provided on the side wall of the end of the positioning groove 52 away from the fixing groove 51. The fixing block 6 can enter the second abutment groove 521. When the transport plate 5 is in the extended state, the transport table 21 moves to the transport plate 5. The limiting spring 41 can be pushed by hand to position the fixing block 6 in the second abutment groove 521, further stabilizing the extended structure of the transport plate 5.

[0046] Reference Figure 1 The conveying plate 5 is movably connected to an extension plate 7 that is staggered vertically. The extension plates 7 move in opposite directions toward the sides of the conveying plate 5 and extend toward the left and right sides of the construction floor. The staggered arrangement of the extension plates 7 allows both the left and right extension plates 7 to have a longer extension range, extending toward the left and right sides of the construction floor respectively, thereby shortening the manual transport distance between the loading platform 1 and the construction floor.

[0047] Reference Figure 1 , 2The transport mechanism 2 also includes a conveyor track 22, which includes a curved track 221 and a straight track 222. The curved track 221 is provided on the transport plate 5 and extends curvedly to both sides of the transport plate 5. The straight track 222 is provided on the opposite extension plate 7 and is connected to the curved track 221 on the corresponding side. The pulley 211 of the transport platform 21 can enter either the straight track 222 on the two side extension plates 7 along the curved track 221, thereby transporting the building materials to the required position on either the left or right side of the construction floor and shortening the manual transport distance.

[0048] Reference Figure 1 , 4 Arc-shaped guide plates 8 are fixed on both sides of the conveying plate 5. The guide plates 8 extend downward to the corresponding extension plates 7. Guide grooves 81 corresponding to the curved rail slide 221 are opened on the guide plates 8. The guide plates 8 position the extension plates 7 through the positioning structure 9.

[0049] Reference Figure 1 , 2 The guide plate 8 can limit the extension plate 7 housed in the transport plate 5 on the one hand, and on the other hand, it can position the extension plate 7 after it extends and guide the pulley 211 to slide from the transport plate 5 into the extension plate 7.

[0050] Reference Figure 1 , 4 The two ends of the guide plate 8 are rotatably connected to the side wall of the transport table 21 by torsion springs 10. The positioning structure 9 includes a positioning rod 91 and a positioning groove 92. The positioning rod 91 is fixed below both ends of the guide plate 8. The positioning groove 92 is opened on the extension plate 7 and corresponds to the positioning rod 91. The torsion spring 10 abuts against the positioning rod 91 and is inserted into the positioning groove 92. Through the abutting force and deformation force of the torsion spring 10, the extension plate 7 can be fixed after extending out of the transport plate 5, preventing the extension plate 7 from retracting, maintaining structural stability, and enabling the transport table 21 to feed materials smoothly.

[0051] A construction method for a building construction unloading platform includes the following steps:

[0052] When transporting building materials to the transport platform 21 by a tower crane, the transport platform 21 needs to be fixed. At this time, the abutment plate 31 rotates and is locked in the first abutment groove 32, while the insert block 44 is inserted into the vertical rod 43 and the limit spring 41 abuts against the front end of the pulley 211.

[0053] When feeding materials into the floor, firstly, the abutment plate 31 is dislodged from the first abutment groove 32, and the traction vertical rod 43 and horizontal rod 42 drive the limit spring 41 to be misaligned with the pulley 211. At the same time, the fixing block 6 also moves from the fixing groove 51 to the clearance groove 52. The conveying plate 5 is extended into the front end of the carrying base 1 by hand, and then the opposite extension plates 7 are extended to both sides of the conveying plate 5 by hand.

[0054] As the extension plate 7 moves, the guide plate 8 rotates under the action of the torsion spring 10 until the positioning rod 91 is inserted into the positioning groove 92 to fix the extension plate 7. Then, by holding the handle 212 of the transport table 21, the pulley 211 moves along the curved rail slide 221 and is guided by the guide plate 8 into the straight rail slide 222 on the extension plate 7 to reach the side of the floor where the building materials are placed.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction material unloading platform, comprising a loading base (1) installed on a floor slab, characterized in that: A transport mechanism (2) is provided at the loading platform (1). The transport mechanism (2) includes a transport platform (21) for transporting building materials and a conveyor track (22) installed in the loading platform (1). The bottom of the transport platform (21) is fixed with pulleys (211) that are slidably connected to the loading platform (1). The loading platform (1) houses a transport plate (5) for transporting building materials. The left and right sides of the transport plate (5) can extend in opposite directions. The conveyor track (22) is opened on the transport plate (5) and bends and extends toward the two sides of the transport plate (5). The pulleys (211) slide along the conveyor track (22). The conveying plate (5) is movably connected to an extension plate (7) that is staggered vertically. The extension plates (7) move in opposite directions toward both sides of the conveying plate (5). The conveying track (22) includes a curved rail slide (221) and a straight rail slide (222). The curved rail slide (221) is opened on the conveying plate (5) and extends curvedly toward both sides of the conveying plate (5). The straight rail slide (222) is opened on the opposite extension plates (7) and is connected to the curved rail slide (221) on the corresponding side. The conveying platform (21) enters either the straight rail slide (222) on the two side extension plates (7) along the curved rail slide (221). The two side walls of the conveying plate (5) are respectively fixed with arc-shaped guide plates (8), the guide plates (8) extend downward to the corresponding extension plates (7), and the guide plates (8) are provided with guide grooves (81) corresponding to the curved rail slide (221); and the guide plates (8) position the extension plates (7) through the positioning structure (9).

2. The unloading platform for building construction according to claim 1, characterized in that: The guide plate (8) is rotatably connected to the side wall of the transport platform (21) by a torsion spring (10). The positioning structure (9) includes a positioning rod (91) and a positioning groove (92). The positioning rod (91) is fixed below both ends of the guide plate (8). The positioning groove (92) is opened on the extension plate (7) and corresponds to the positioning rod (91). The torsion spring (10) abuts against the positioning rod (91) and is inserted into the positioning groove (92).

3. The building construction unloading platform according to claim 2, characterized in that: The transport platform (21) has a handle (212) fixed to the front side, and the transport platform (21) is positioned on the loading base (1) by the abutment structure (3).

4. A building construction unloading platform according to claim 3, characterized in that: The abutting structure (3) includes an abutting plate (31) that is rotatably disposed on the loading base (1) and a first abutting groove (32) opened at the front end of both sides of the transport platform (21). The abutting plate (31) is bent and can rotatably abut against and be positioned in the corresponding first abutting groove (32) and is positioned at the front end of the transport platform (21) through the linkage structure (4).

5. A building construction unloading platform according to claim 4, characterized in that: Several shock-absorbing springs (11) are fixed at intervals on the loading platform (1) and abut against the bottom of the transport platform (21). The shock-absorbing springs (11) and the pulleys (211) are misaligned. The linkage structure (4) includes a limiting spring (41). The pulleys (211) are arranged opposite to each other on the transport platform (21), and multiple pulleys (211) are arranged longitudinally on the same side. The limiting springs (41) are respectively arranged at the front end of the opposite pulleys (211). The limiting springs (41) are connected to the corresponding abutment plates (31). When the abutment plates (31) move, the limiting springs (41) move and give way to the pulleys (211).

6. A building construction unloading platform according to claim 5, characterized in that: The linkage structure (4) also includes a horizontal bar (42), a vertical bar (43), and a deformable insert (44). The horizontal bar (42) is movably connected to the bottom of the platform and supports the limiting spring (41). The vertical bar (43) is fixed to the horizontal bar (42) and movably connected to the side wall of the platform. The insert (44) is fixed to the abutment plate (31). The vertical bar (43) has a slot for the insert (44) to be deformed and inserted. The insert (44) is inserted into the slot and abuts against the back of the vertical bar (43). When the abutment plate (31) comes out of the first abutment groove (32), the insert (44) abuts against the back of the vertical bar (43) and slides laterally. The limiting spring (41) is misaligned with the pulley (211), and the end of the horizontal bar (42) can be magnetically fixed to the corresponding side wall of the platform (1).

7. A building construction unloading platform according to claim 6, characterized in that: The conveying plate (5) is fixed to the platform by a fastener; the fastener is a fixing block (6) fixed to the crossbar (42). A fixing groove (51) is provided on the upper front side of the conveying plate (5). A longitudinally penetrating relief groove (52) is provided on one side of the fixing groove (51). The fixing block (6) is positioned in the fixing groove (51). When the limiting spring (41) and the pulley (211) are misaligned, the fixing block (6) moves to the relief groove (52). A second abutting groove (521) is provided on the side wall of the relief groove (52) away from the fixing groove (51). The fixing block (6) can enter the second abutting groove (521).

8. The construction method of a building construction unloading platform according to claim 7, characterized in that: Includes the following steps: When transporting building materials to the transport platform (21) by tower crane, the transport platform (21) needs to be fixed. At this time, the abutment plate (31) rotates and is locked in the first abutment groove (32), while the insert block (44) is inserted into the vertical rod (43), and the limiting spring (41) abuts against the front end of the pulley (211). When feeding materials into the floor, firstly, the abutment plate (31) is dislodged from the first abutment groove (32), and the traction rod (43) and the horizontal rod (42) drive the limit spring (41) to be misaligned with the pulley (211). At the same time, the fixing block (6) also moves from the fixing groove (51) to the relief groove (52). The conveying plate (5) is extended into the front end of the loading base (1) by hand, and then the opposite extension plates (7) are extended to both sides of the conveying plate (5) by hand. As the extension plate (7) moves, the guide plate (8) rotates under the action of the torsion spring (10) until the positioning rod (91) is inserted into the positioning groove (92) to fix the extension plate (7); then, by holding the handle (212) of the transport table (21), the pulley (211) moves along the curved rail slide (221) and is guided by the guide plate (8) into the straight rail slide (222) on the extension plate (7) to reach the side of the floor where the building materials are placed.

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