Shaftway discharging platform device capable of being folded and used in turnover mode and construction method of shaftway discharging platform device

Abstract

The invention belongs to the technical field of shaftway discharging platforms, and particularly relates to a shaftway discharging platform device capable of being folded and used in a turnover mode and a construction method thereof.The shaftway discharging platform device comprises a bottom formed by combining at least two bottom plates, a side part formed by connecting a first side plate and a second side plate, and a movable part formed by connecting the second side plate and a third side plate; and the bottom, the side parts and the movable part are jointly encircled to form a hoistway unloading platform with an open top and openable side surfaces. The movable part of the shaft unloading platform is formed by combining the two second side plates and the two third side plates, and the second side plates and the third side plates are movably connected together in a foldable mode through the rotating mechanisms and the limiting mechanisms.

Description

Technical Field

[0001] The present invention belongs to the technical field of hoistway unloading platforms, and particularly relates to a collapsible and reusable hoistway unloading platform device and a construction method thereof. Background Art

[0002] Hoistway unloading platforms are various temporary operating platforms and scaffolds often erected at construction sites. They are divided into mobile unloading platforms, floor-standing unloading platforms, cantilevered unloading platforms, etc. They are mainly used for transporting and storing construction materials. Such platforms usually consist of a load-bearing platform, supporting members, and an operating frame. The supporting members include vertical slightly inclined keels, diagonal keels, and crossbars, forming a triangular keel structure to ensure the stability and horizontality of the platform.

[0003] Existing hoistway unloading platforms are all platforms directly welded according to the construction site scenario. The use of the platform is limited to the construction site environment, and it has no portability and cannot be reused, occupying a certain actual construction cost. When the construction site environment is large, the usage amount of hoistway unloading platforms is also large, and the corresponding cost is higher. Summary of the Invention

[0004] Based on the technical problem that existing hoistway unloading platforms are all platforms directly welded according to the construction site scenario, the use of the platform is limited to the construction site environment, and it has no portability and cannot be reused, occupying a certain actual construction cost. When the construction site environment is large, the usage amount of hoistway unloading platforms is also large, and the corresponding cost is higher, the present invention proposes a collapsible and reusable hoistway unloading platform device and a construction method thereof.

[0005] A collapsible and reusable hoistway unloading platform device proposed by the present invention includes a bottom composed of at least two bottom plates, a side part formed by connecting a first side plate and a second side plate, and a movable part formed by connecting the second side plate and a third side plate. The bottom, side part, and movable part jointly enclose a hoistway unloading platform with an open top and an openable side.

[0006] Preferably, the two second side plates of two adjacent side parts are perpendicularly connected to form four support corners of the hoistway unloading platform; a rotational connection is formed between the upper ends of the first side plate and the second side plate through a rotational mechanism, and a limiting mechanism for restricting the relative rotation of the first side plate and the second side plate is further provided between the first side plate and the second side plate;

[0007] Two first side plates are provided on the side part, and the upper and lower ends of the two first side plates are both connected through a fixing mechanism;

[0008] A limiting mechanism and a rotating mechanism are also provided between the second side plate and the third side plate of the movable part. The movable part is provided with two adjacent third side plates, and the two third side plates are connected by an openable lock sleeve.

[0009] The second side plates are all rotatably connected to the bottom plate, and the adjacent bottom plates are connected by a connecting plate.

[0010] Preferably, mounting rails are provided on the bottom of each bottom plate. The bottom plates are arranged together, and the mounting rails are arranged in a string shape. A positioning shaft is also horizontally inserted into the mounting rails. Both ends of the positioning shaft are fastened by nuts. The connecting plate is clamped in the string-shaped mounting rails and is located between the positioning shaft and the bottom plate.

[0011] Preferably, the connecting plate is provided with a groove for forming a clamping connection with the positioning shaft.

[0012] Preferably, the rotating mechanism includes two L-shaped shafts. First holes for cooperating with the rotating mechanism are provided on both the first side plate and the second side plate. A first insertion shaft is inserted into the first holes. One end of the first insertion shaft is provided with a first clamping block. The first clamping block is clamped with the inner wall of the first hole. The other end of the first clamping block passes through the lower end of the L-shaped shaft, and the first insertion shaft is connected to the L-shaped shaft by a nut. The upper surface of the upper end of one of the L-shaped shafts is fixedly connected with a first rotating shaft, and the lower surface of the upper end of the other L-shaped shaft is fixedly connected with a second rotating shaft. The first rotating shaft and the second rotating shaft are rotatably connected together by a rotating member.

[0013] Preferably, the limiting mechanism includes two relatively arranged clamping shafts and two clamping frames sleeved outside the clamping shafts. One side of the two clamping frames is provided with an opening, and the other side is connected with a connecting shaft. Second holes for cooperating with the limiting mechanism are provided on the first side plate and the second side plate. The connecting shaft is inserted into the second holes through a second insertion shaft. Both ends of the two clamping shafts are provided with protrusions, and a elastic sheet is connected between the two protrusions in the up and down positions. Pressing blocks are arranged on the mutually remote sides of the two clamping shafts. The pressing blocks abut against the clamping frames. Inclined surfaces that are mutually attached are arranged on the mutually close sides of the two clamping shafts. The connecting shaft is threadedly inserted into the second insertion shaft. A second clamping block is arranged at the end of the second insertion shaft away from the connecting shaft. The second clamping block is clamped at the edge position of the second hole. The two clamping frames are respectively connected to the first side plate and the second side plate.

[0014] Preferably, first rotation grooves are provided at the upper ends of the two second side plates close to each other, and second rotation grooves are provided at the lower ends; a first threaded shaft is threadedly inserted into the first rotation groove, and a first retaining piece is sleeved between the two first threaded shafts; the first threaded shaft is fastened by a nut; a second threaded shaft is threadedly inserted into the second rotation groove; the second threaded shaft also passes through the bottom plate; both ends of the second threaded shaft are also fastened by nuts.

[0015] Preferably, a clamping groove is provided at the upper end of the third side plate; the locking sleeve is sleeved between the two clamping grooves, and the cross-section of the locking sleeve is rectangular.

[0016] Preferably, the fixing mechanism includes two fixing shafts fixedly connected by a third retaining piece; third holes are provided on two adjacent first side plates; the fixing shafts respectively pass through the third holes on the two first side plates; a third hole is also provided on the third side plate, and a second retaining piece is sleeved between the ends of the two fixing shafts away from the third retaining piece; the second retaining piece is fastened by sleeving a nut on the fixing shaft.

[0017] Preferably, a construction method of a collapsible and reusable hoistway unloading platform device is characterized by comprising the following steps:

[0018] S1: First, assemble the bottom of the hoistway unloading platform. The bottom is spliced by a plurality of bottom plates. After the bottom plates are arranged and combined, they are fixed between the installation rails at the bottom through installation connecting plates;

[0019] S2: Then assemble the four corners of the hoistway unloading platform. Install each second side plate at the corner positions at the bottom. The lower ends of the second side plates are connected to the bottom plate through second threaded shafts, and the upper ends of the second side plates are movably connected together through a first retaining piece and a first threaded shaft;

[0020] S3: Then assemble the side part of the hoistway unloading platform. The side part of the hoistway unloading platform is formed by combining two first side plates and two second side plates. The two first side plates are connected together through a fixing mechanism, and the first side plates and the second side plates are foldably connected together through a rotating mechanism and a limiting mechanism;

[0021] S4: Finally, assemble the movable part of the hoistway unloading platform. The movable part is formed by combining two second side plates and two third side plates. The second side plates and the third side plates are foldably and movably connected together through a rotating mechanism and a limiting mechanism, and the two third side plates are clamped together through a locking sleeve;

[0022] S5: When discharging, remove the clamping shaft from the clamping frame. The inner surfaces of the second side plate and the third side plate are folded together. The folded part turns to the outer side range, so that loading and unloading operations can be carried out from the side of the movable part. After the operation is completed, unfold the second side plate and the third side plate flat, limit the angles of the second side plate and the third side plate through the rotating mechanism and the limiting mechanism, and finally connect and clamp the two third side plates together through the lock sleeve.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The bottom of the hoistway unloading platform provided by the present invention is spliced by a plurality of bottom plates. After the bottom plates are arranged and combined, a connecting plate is installed between the installation rails at the bottom and connected by passing a positioning shaft through one side of the installation rail. The movable part of the hoistway unloading platform is composed of two second side plates and two third side plates. The second side plate and the third side plate are foldably and movably connected together through a rotating mechanism and a limiting mechanism, and the two third side plates are clamped together through a lock sleeve. The rotating mechanism, the fixing mechanism and the limiting mechanism are all detachable structures. The hoistway unloading platform can be disassembled and transplanted to other buildings for use. After the limiting mechanism is disassembled, the first side plate and the second side plate can be directly folded and stored through the rotating mechanism, and the second side plate and the third side plate can also be directly folded and stored through the rotating mechanism, which is convenient for storage and transportation. Brief Description of the Drawings

[0025] Figure 1 It is a top view structural schematic diagram of a foldable and reusable hoistway unloading platform device proposed by the present invention;

[0026] Figure 2 It is a bottom view structural schematic diagram of a foldable and reusable hoistway unloading platform device proposed by the present invention;

[0027] Figure 3 It is a connection structural schematic diagram of the first side plate and the second side plate;

[0028] Figure 4 It is a connection structural schematic diagram of the second side plate and the third side plate;

[0029] Figure 5 For Figure 4 The enlarged structural view of part A in

[0030] Figure 6 For Figure 4 The enlarged structural view of part B in

[0031] Figure 7 It is a front view structural schematic diagram of the rotating mechanism;

[0032] Figure 8 It is a back view structural schematic diagram of the rotating mechanism;

[0033] Figure 9 is a front structural schematic diagram of a limiting mechanism;

[0034] Figure 10 is a side structural schematic diagram of a limiting mechanism;

[0035] Figure 11 is a structural schematic diagram of a fixing mechanism.

[0036] In the figure: 1, bottom plate; 2, first side plate; 3, second side plate; 4, third side plate; 5, rotating mechanism; 6, fixing mechanism; 7, limiting mechanism; 8, lock sleeve; 9, first clamping block; 10, L-shaped shaft; 11, first rotating shaft; 12, second rotating shaft; 13, first inserting shaft; 14, clamping frame; 15, clamping shaft; 16, pressing block; 17, convex block; 18, elastic piece; 19, second inserting shaft; 20, connecting shaft; 21, second clamping block; 22, first rotating groove; 23, second rotating groove; 24, first threaded shaft; 25, first retaining piece; 26, second threaded shaft; 27, second retaining piece; 28, fixing shaft; 29, third retaining piece; 30, clamping groove; 31, mounting rail; 32, connecting plate; 33, positioning shaft. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] Refer to Figures 1 - 11 , a collapsible and reusable hoistway unloading platform device, including a bottom composed of a plurality of bottom plates 1, a side part connected by a first side plate 2 and a second side plate 3, and a movable part connected by a second side plate 3 and a third side plate 4. The two second side plates 3 of two adjacent side parts are connected together. The upper ends of the first side plate 2 and the second side plate 3 are connected together by a rotating mechanism 5. A plurality of limiting mechanisms 7 are also provided between the first side plate 2 and the second side plate 3; there are two first side plates 2 on the side part, and the two first side plates 2 are connected together. The upper and lower ends of the two first side plates 2 are both connected by a fixing mechanism 6; limiting mechanisms 7 and rotating mechanisms 5 are also provided between the second side plate 3 and the third side plate 4 of the movable part. The movable part is provided with two third side plates 4 which are adjacent to each other, and the two third side plates 4 are connected together by a lock sleeve 8; the second side plates 3 are all rotatably connected to the bottom plate 1, and a plurality of bottom plates 1 are connected together by a connecting plate 32.

[0039] Installation rails 31 are provided at the bottom of each base plate 1. The base plates 1 are arranged together, and the installation rails 31 are arranged in a series. The connecting plate 32 is snap-fitted into the series of installation rails 31. A positioning shaft 33 is also inserted horizontally into the installation rail 31, and both ends of the positioning shaft 33 are fastened by nuts.

[0040] During specific use, by arranging the base plates 1, the installation rails 31 are correspondingly arranged. Then, the connecting plates 32 are simultaneously snapped into the multiple installation rails 31. The connecting plates 32 are fixed by the positioning shafts 33. Grooves for snap-fitting with the positioning shafts 33 are provided on the connecting plates 32, and the connecting plates 32 are arranged between the positioning shafts 33 and the base plates 1.

[0041] The positioning shafts 33 limit the connecting plates 32. Part of the positioning shafts 33 is stuck in the grooves to ensure the stability of the positions of the connecting plates 32, so that they will not move randomly after connection, thereby enabling multiple base plates 1 to be connected.

[0042] The rotating mechanism 5 includes two L-shaped shafts 10. First holes for cooperating with the rotating mechanism 5 are provided on both the first side plate 2 and the second side plate 3. A first insertion shaft 13 is inserted into the first holes. One end of the first insertion shaft 13 is provided with a first clamping block 9, and the first clamping block 9 is snap-fitted with the inner wall of the first hole. The other end of the first clamping block 9 passes through the lower end of the L-shaped shaft 10, and the first insertion shaft 13 is connected to the L-shaped shaft 10 by a nut. A first rotating shaft 11 is fixedly connected to the upper surface of the upper end of one of the L-shaped shafts 10, and a second rotating shaft 12 is fixedly connected to the lower surface of the upper end of the other L-shaped shaft 10. The first rotating shaft 11 and the second rotating shaft 12 are rotatably connected together by a rotating member.

[0043] With such a setting, a structure that can be movably folded is formed between the first side plate 2 and the second side plate 3. When the first side plate 2 and the second side plate 3 are folded, the L-shaped shaft 10 is fixedly connected to the first side plate 2 or the second side plate 3. When folding, the inner surfaces of the first side plate 2 and the second side plate 3 are attached and folded, and the first rotating shaft 11 and the second rotating shaft 12 provide a hinge structure for rotational connection.

[0044] The limiting mechanism 7 includes two clamping shafts 15 arranged opposite to each other and two clamping frames 14 sleeved on the outside of the clamping shafts 15. One side of the two clamping frames 14 is provided with an opening, and the other side is connected with a connecting shaft 20. The first side plate 2 and the second side plate 3 are provided with a second hole for use with the limiting mechanism 7. The connecting shaft 20 is inserted into the second hole through a second plug-in shaft 19. Both ends of the two clamping shafts 15 are provided with protrusions 17. A spring 18 is connected between the two protrusions 17 at the upper and lower positions. The sides of the two clamping shafts 15 away from each other are provided with pressing blocks 16, and the pressing blocks 16 are against the clamping frames 14. The sides of the two clamping shafts 15 close to each other are provided with inclined surfaces that fit each other. The connecting shaft 20 is threadedly inserted into the second plug-in shaft 19. The end of the second plug-in shaft 19 away from the connecting shaft 20 is provided with a second clamping block 21, and the second clamping block 21 is clamped at the edge of the second hole. After the first side panel 2 and the second side panel 3 are unfolded, they need to be stabilized. The two card shafts 15 are squeezed by the pressing block 16 so that the two card shafts 15 slide along the inclined surface and overlap each other. The spring sheet 18 is compressed and deformed so that the card shaft 15 can enter the card frame 14 from one side of the opening.

[0045] After the pressing block 16 is released, it will be reset under the elastic force of the spring sheet 18 , so that the two clamping shafts 15 are respectively clamped with the inner wall of the clamping frame 14 , thereby achieving a fixed connection effect between the two clamping frames 14 .

[0046] The two card frames 14 are respectively connected to the first side plate 2 and the second side plate 3. The upper ends of the two second side plates 3 that are close to each other are each provided with a first rotation groove 22, and the lower ends are each provided with a second rotation groove 23. A first threaded shaft 24 is inserted into the inner thread of the first rotation groove 22, and a first baffle 25 is sleeved between the two first threaded shafts 24. The first threaded shaft 24 is fastened by a nut, and a second threaded shaft 26 is inserted into the inner thread of the second rotation groove 23. The second threaded shaft 26 also passes through the bottom plate 1, and both ends of the second threaded shaft 26 are also fastened by nuts. The second side plate 3 is set at the corner position of the well, and the two first threaded shafts 24 are connected between the upper ends by the first baffle 25, and the lower end is rotatably mounted on the bottom plate 1 by the second threaded shaft 26, so as to realize a detachable movable connection mode.

[0047] The connecting shaft 20 is threadedly inserted in the second plug shaft 19 for a detachable installation method. One end of the second plug shaft 19 is connected to the second hole through the second clamping block 21, and the other end is connected to the clamping frame 14, thereby realizing a detachable installation effect of the clamping frame 14 and the clamping shaft 15 on the first side panel 2 and the second side panel 3.

[0048] A slot 30 is provided at the upper end of the third side plate 4, and the lock sleeve 8 is sleeved between the two slots 30. The cross section of the lock sleeve 8 is rectangular. The movable part is a port for loading and unloading. When the two third side plates 4 are closed, the lock sleeve 8 is inserted into the slot 30 for fixed connection.

[0049] The fixing mechanism 6 includes two fixing shafts 28 fixedly connected by a third retaining piece 29. Third holes are provided on two adjacent first side plates 2. The fixing shafts 28 respectively pass through the third holes on the two first side plates 2. Third holes are also provided on the third side plate 4. A second retaining piece 27 is sleeved between the ends of the two fixing shafts 28 away from the third retaining piece 29. The second retaining piece 27 is fastened by sleeving nuts on the fixing shafts 28. The two first side plates 2 are connected together by the fixing mechanism 6. When installing, directly insert the fixing shafts 28 from one side, sleeved the second retaining piece 27 on the other side, and fasten and fix them with nuts.

[0050] The fixing mechanism 6 includes two fixing shafts 28 fixedly connected by a third retaining piece 29. Third holes are provided on two adjacent first side plates 2. The fixing shafts 28 respectively pass through the third holes on the two first side plates 2. Third holes are also provided on the third side plate 4. A second retaining piece 27 is sleeved between the ends of the two fixing shafts 28 away from the third retaining piece 29. The second retaining piece 27 is fastened by sleeving nuts on the fixing shafts 28.

[0051] In specific applications, the two first side plates 2 are connected together by the fixing mechanism 6. When installing, directly insert the fixing shafts 28 from one side, sleeved the second retaining piece 27 on the other side, and fasten and fix them with nuts.

[0052] A construction method of a collapsible and reusable hoistway unloading platform device includes the following steps:

[0053] S1: First, assemble the bottom of the hoistway unloading platform. The bottom of the hoistway unloading platform is assembled by splicing multiple bottom plates 1. After the bottom plates 1 are arranged and combined, connecting plates 32 are installed between the installation rails 31 at the bottom. Connect them by passing positioning shafts 33 through one side of the installation rails 31. The positioning shafts 33 are clamped with the connecting plates 32 through grooves to limit the positions of the connecting plates 32, and at the same time, fix and connect the respective bottom plates 1 together;

[0054] S2: Then, assemble the four corners of the hoistway unloading platform. Install the respective second side plates 3 at the corner positions at the bottom. The lower ends of the second side plates 3 are connected to the bottom plates 1 through second threaded shafts 26. The upper ends of the second side plates 3 are movably connected together through a first retaining piece 25 and a first threaded shaft 24;

[0055] S3: Then, assemble the sides of the hoistway unloading platform. The sides of the hoistway unloading platform are formed by combining two first side plates 2 and two second side plates 3. The two first side plates 2 are connected together by a fixing mechanism 6. The first side plates 2 and the second side plates 3 are foldably connected together by a rotating mechanism 5 and a limiting mechanism 7;

[0056] S4: Finally, assemble the movable part of the hoistway unloading platform. The movable part of the hoistway unloading platform is composed of two second side plates 3 and two third side plates 4. The second side plate 3 and the third side plate 4 are connected together in a foldable and movable manner through a rotating mechanism 5 and a limiting mechanism 7. The two third side plates 4 are clamped together through a locking sleeve 8.

[0057] S5: The rotating mechanism 5 enables relative rotation between the first side plate 2 and the third side plate 4 to achieve the folding effect. When unloading, remove the clamping shaft 15 from the clamping frame 14. The inner surfaces of the second side plate 3 and the third side plate 4 are folded together. The folded part turns to the outer side range, so that loading and unloading operations can be carried out from one side of the movable part. After the operation is completed, unfold the second side plate 3 and the third side plate 4 flatly. Press the two clamping shafts 15 through the pressing block 16, and insert the clamping shafts 15 into the space between the two clamping frames 14 from the opening side of the clamping frame 14 to limit the angles of the second side plate 3 and the third side plate 4. Finally, connect and clamp the two third side plates 4 together through the locking sleeve 8.

[0058] The rotating mechanism 5, the fixing mechanism 6, and the limiting mechanism 7 are all detachable structures. The hoistway unloading platform can be disassembled and transplanted to other buildings for use. After removing the limiting mechanism 7, the first side plate 2 and the second side plate 3 can be directly folded and stored through the rotating mechanism 5. The second side plate 3 and the third side plate 4 can also be directly folded and stored through the rotating mechanism 5, which is convenient for storage and transportation.

[0059] In the specific use process, since both the first side plate 2 and the second side plate 3 in the side part adopt a foldable manner, after removing the fixing mechanism 6 from the side part, the first side plate 2 and the second side plate 3 can be folded through the rotating mechanism 5, and thus can also be used as a port for unloading.

[0060] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0061] In addition, if the description of "first", "second", etc. is involved in the embodiments of the present invention, the description of "first", "second", etc. is only for descriptive purposes and cannot be understood as indicating or implying its relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, "a plurality of" means more than two. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A foldable hoistway unloading platform device for turnover use, characterized in that: The utility model comprises a bottom formed by combining at least two bottom plates (1), a side portion formed by connecting a first side plate (2) and a second side plate (3), and a movable portion formed by connecting the second side plate (3) and a third side plate (4), and the bottom, the side portion and the movable portion are combined to form a shaft unloading platform with an open top and openable sides.

2. A foldable hoistway unloading platform device for turnover use, characterized in that: The two second side plates (3) of the two adjacent side parts are vertically connected to each other to form four supporting angles of the shaft unloading platform; the upper ends of the first side plate (2) and the second side plate (3) are rotatably connected via a rotating mechanism (5), and a limiting mechanism (7) for limiting the relative rotation of the first side plate (2) and the second side plate (3) is also provided between the first side plate (2) and the second side plate (3); The side portion is provided with two first side panels (2), and the upper ends and lower ends of the two first side panels (2) are connected via a fixing mechanism (6); A limiting mechanism (7) and a rotating mechanism (5) are also provided between the second side plate (3) and the third side plate (4) of the movable part, and the movable part is provided with two adjacent third side plates (4), and the two third side plates (4) are connected by an openable locking sleeve (8); The second side plates (3) are all rotatably connected to the bottom plate (1), and two adjacent bottom plates (1) are connected via a connecting plate (32).

3. A foldable and recyclable hoistway unloading platform device according to claim 2, characterized in that: A mounting rail (31) is provided at the bottom of each base plate (1); the base plates (1) are arranged together; the mounting rails (31) are arranged in a string; a positioning shaft (33) is also inserted transversely on the mounting rail (31); both ends of the positioning shaft (33) are fastened by nuts; the connecting plate (32) is clamped in the string-shaped mounting rail (31) and is located between the positioning shaft (33) and the base plate (1).

4. The foldable and recyclable hoistway unloading platform device according to claim 3 is characterized in that: The connecting plate (32) is provided with a groove for forming a clamping connection with the positioning shaft (33).

5. A foldable and rotatable hoistway unloading platform device according to claim 2, 3 or 4, characterized in that: The rotating mechanism (5) comprises two L-shaped shafts (10); the first side plate (2) and the second side plate (3) are both provided with a first hole for use with the rotating mechanism (5); the first hole is provided with a first insertion shaft (13); one end of the first insertion shaft (13) is provided with a first clamping block (9); the first clamping block (9) is clamped with the inner wall of the first hole, the other end of the first clamping block (9) passes through the lower end of the L-shaped shaft (10), and the first insertion shaft (13) is connected to the L-shaped shaft (10) through a nut, the upper end surface of one of the L-shaped shafts (10) is fixedly connected to the first rotating shaft (11), and the upper end lower surface of the other L-shaped shaft (10) is fixedly connected to the second rotating shaft (12), and the first rotating shaft (11) and the second rotating shaft (12) are rotatably connected together through a rotating member.

6. The foldable and recyclable hoistway unloading platform device according to claim 5, characterized in that: The limiting mechanism (7) comprises two clamping shafts (15) arranged opposite to each other and two clamping frames (14) sleeved on the outside of the clamping shafts (15); one side of the two clamping frames (14) is provided with an opening, and the other side is connected to a connecting shaft (20); a second hole for use with the limiting mechanism (7) is provided on the first side plate (2) and the second side plate (3); the connecting shaft (20) is inserted into the second hole through a second insertion shaft (19); both ends of the two clamping shafts (15) are provided with a protrusion (17); a spring sheet (19) is connected between the two protrusions (17) at the upper and lower positions. 18), a pressing block (16) is provided on the sides of the two clamping shafts (15) that are away from each other; the pressing block (16) abuts against the clamping frame (14), and the sides of the two clamping shafts (15) that are close to each other are provided with inclined surfaces that fit each other, and the connecting shaft (20) is threadedly inserted in the second insertion shaft (19); a second clamping block (21) is provided on one end of the second insertion shaft (19) that is away from the connecting shaft (20); the second clamping block (21) is clamped at the edge of the second hole, and the two clamping frames (14) are respectively connected to the first side plate (2) and the second side plate (3).

7. A foldable and recyclable hoistway unloading platform device according to claim 6, characterized in that: The upper ends of the two second side plates (3) on the sides close to each other are each provided with a first rotation groove (22), and the lower ends are each provided with a second rotation groove (23); a first threaded shaft (24) is inserted into the inner thread of the first rotation groove (22), and a first blocking plate (25) is sleeved between the two first threaded shafts (24); the first threaded shaft (24) is fastened by a nut; a second threaded shaft (26) is inserted into the inner thread of the second rotation groove (23); the second threaded shaft (26) also passes through the bottom plate (1); and both ends of the second threaded shaft (26) are also fastened by nuts.

8. The foldable and recyclable hoistway unloading platform device according to claim 7, characterized in that: A slot (30) is provided at the upper end of the third side plate (4); the lock sleeve (8) is sleeved between the two slots (30), and the cross section of the lock sleeve (8) is rectangular.

9. The foldable and recyclable hoistway unloading platform device according to claim 6, characterized in that: The fixing mechanism (6) comprises two fixing shafts (28) fixedly connected via a third baffle (29); a third hole is provided on two adjacent first side plates (2); the fixing shaft (28) passes through the third holes on the two first side plates (2) respectively; a third hole is also provided on the third side plate (4); a second baffle (27) is sleeved between ends of the two fixing shafts (28) away from the third baffle (29); and the second baffle (27) is fastened by sleeve-fitting a nut on the fixing shaft (28).

10. The construction method of a foldable and recyclable hoistway unloading platform device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, assemble the bottom of the shaft unloading platform. The bottom is assembled by splicing a plurality of bottom plates (1). After the bottom plates (1) are arranged and assembled, they are fixed by installing connecting plates (32) between the mounting rails (31) at the bottom. S2: Then, the four corners of the shaft unloading platform are assembled, and each second side plate (3) is installed at the corner position of the bottom, the lower end of the second side plate (3) is connected to the bottom plate (1) through the second threaded shaft (26), and the upper ends of the second side plates (3) are movably connected together through the first baffle (25) and the first threaded shaft (24); S3: Then, the side of the shaft unloading platform is assembled. The side of the shaft unloading platform is formed by combining two first side panels (2) and two second side panels (3). The two first side panels (2) are connected together by a fixing mechanism (6). The first side panel (2) and the second side panel (3) are foldably connected together by a rotating mechanism (5) and a limiting mechanism (7); S4: Finally, the movable part of the shaft unloading platform is assembled, and the movable part is composed of two second side panels (3) and two third side panels (4). The second side panels (3) and the third side panels (4) are foldably connected together through a rotating mechanism (5) and a limiting mechanism (7), and the two third side panels (4) are clamped together through a locking sleeve (8); S5: When unloading, the clamping shaft (15) is removed from the clamping frame (14), the inner surfaces of the second side plate (3) and the third side plate (4) are folded together, and the folded parts are turned to the outer range, so that the loading and unloading operations can be carried out from the side of the movable part. After the operation is completed, the second side plate (3) and the third side plate (4) are flatly unfolded, and the angles of the second side plate (3) and the third side plate (4) are limited by the rotating mechanism (5) and the limiting mechanism (7), and finally the two third side plates (4) are connected and fixed by the locking sleeve (8).

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