Fabricated foundation pit awning system and method

Abstract

The invention provides an assembly type foundation pit awning system and method, relates to the field of foundation pit construction protection, and aims to solve the problems that an existing foundation pit dustproof awning is difficult to open according to needs and the flexibility is poor when a foundation pit is protected, a retaining wall mechanism and an awning mechanism are adopted to form an awning module, and the retaining wall mechanism is arranged on the edge of a foundation pit to serve as a supporting structure of the awning mechanism; according to the sky curtain mechanism, the telescopic support is used for driving the multiple movable fan blades to act, the movable fan blades are unfolded or folded, the unfolded movable fan blades can completely or partially shield a foundation pit opening where the movable fan blades are located, the folded movable fan blades can return to one side to open a foundation pit, and the purposes of flexibly opening and protecting the foundation pit are achieved. And the field work requirements of dust prevention, sound insulation, sun protection, heat preservation, rain shielding, shading and the like of the foundation pit are met.

Description

Technical Field

[0001] The present invention relates to the field of foundation pit construction protection, and in particular to an assembled foundation pit skylight system and method. Background Art

[0002] Dust, noise, high temperature in summer, low temperature in winter, flood control in rainy season and nighttime construction during the foundation pit earthwork construction stage have always been the focus of construction project site work. The old dust prevention and control model achieved the purpose of reducing dust on site by covering with dense mesh safety nets, but the position of the dust nets was relatively fixed, which was inconvenient to open and block in time, and some dust nets would enter the fill with soil construction, polluting the environment. The old noise prevention and control model was to set up fences outside the construction area, but in places where urban buildings were densely populated, the construction noise in the foundation pit would still have a certain impact on the surrounding high-rise buildings. In addition, the old dust-proof canopy used dense mesh nets, which could not prevent rain and wind, and had poor sound insulation.

[0003] A Chinese patent (publication number: CN114961307 A) discloses an assembled foundation pit dustproof canopy device, which uses a slide rail assembly set on the opposite side of the foundation pit to install the dustproof canopy. The dustproof canopy is composed of a number of dustproof components connected in sequence. The dustproof canopy is provided with a dustproof module, a spray mechanism, etc. The dustproof component at the edge is driven to move by a winch, so that the dustproof canopy is adapted to the size of the foundation pit, can shield the foundation pit, reduce the escape of construction dust to the outside, and provide good wind and rain protection. Although multiple dustproof components are used for combination, due to the limitation of their movement mode, the entire dustproof canopy can only be gradually opened or covered from one end, and it is impossible to adaptively open and close the local area. When the equipment needs to be lowered into the foundation pit, the dustproof canopy can only be moved from one end to avoid the construction position before the equipment can be transported, and the flexibility is poor. Since the dustproof shed uses a dustproof module on the side, which is composed of a dustproof plate and a dustproof cloth, although it can reduce the escape of dust to the outside, its ability to suppress noise is poor, and it fails to fully utilize the structure of the foundation pit body, making it difficult to meet diverse protection needs. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled foundation pit canopy system and method in response to the defects of the prior art. A canopy module is composed of a retaining wall mechanism and a canopy mechanism. The retaining wall mechanism is arranged at the edge of the foundation pit as a supporting structure of the canopy mechanism. The canopy mechanism uses a telescopic bracket to drive multiple movable fan blades to move so that the movable fan blades can be unfolded or folded. When the movable fan blades are unfolded, they can fully or partially cover the foundation pit opening at their position. When the movable fan blades are folded, they can return to one side to open the foundation pit, thereby achieving the purpose of flexible opening and protection of the foundation pit and meeting the on-site work requirements of the foundation pit such as dust prevention, sound insulation, sun protection, heat preservation, rain protection and shading.

[0005] The first object of the present invention is to provide a prefabricated foundation pit canopy system, which adopts the following scheme:

[0006] include:

[0007] The retaining wall mechanisms are arranged in pairs, and the two retaining wall mechanisms in the same pair are arranged at intervals;

[0008] The canopy mechanism includes a telescopic bracket and a movable fan piece. The telescopic bracket is a scissor-type structure and is installed on the retaining wall mechanism. A pin is provided at the cross position of the scissor arms of the scissor-type structure. Both ends of the movable fan piece are respectively connected to the telescopic bracket on the same pair and different retaining wall mechanisms; the movable fan piece includes a fan piece and a hinge. The two fan pieces are rotatably connected by the hinge and are respectively connected to different pins of the scissor-type structure. They move with the pin to realize the expansion or folding of the movable fan piece.

[0009] Furthermore, the telescopic bracket is a scissor structure formed by hinged multi-stage scissor arms, and the telescopic bracket is connected to multiple groups of movable fan blades, and the multiple groups of movable fan blades are arranged in sequence along the telescopic direction of the telescopic bracket.

[0010] Furthermore, in the movable fan piece connected to the telescopic bracket, at least one side edge of the movable fan piece is provided with a magnetic attraction portion, so as to attract adjacent movable fan pieces to form a fit when the movable fan piece is unfolded.

[0011] Furthermore, both ends of the fan blade are rotatably connected to the pin shafts through transmission parts respectively, the pin shafts connected to the same fan blade are coaxially distributed, and the rotation axis of the hinge is located between the two different pin shafts connected to the movable fan blade.

[0012] Furthermore, the telescopic bracket is provided with a pushing block at both ends of its telescopic direction, and a canopy slide groove is provided on the retaining wall mechanism. The pushing block is slidably matched with the canopy slide groove, and the canopy slide groove is distributed along the telescopic direction of the telescopic bracket. The pushing block is matched with a translation driving mechanism to drive the pushing block to slide along the canopy slide groove.

[0013] Furthermore, the retaining wall mechanism includes a support, a precipitation sleeve that can be connected to a water source is provided on one side of the support, the precipitation sleeve is connected to a shower head, and a supporting wall is provided on the other side of the support, and the supporting wall protrudes from the top surface of the support.

[0014] Furthermore, in the extension and retraction direction of the telescopic bracket, the two ends of the supporting wall are respectively provided with docking parts, the adjacent supporting walls corresponding to the adjacent retaining wall mechanisms are connected through the docking parts, and the dewatering sleeves corresponding to the adjacent retaining wall mechanisms are connected to each other; and a drainage hole is opened on the retaining wall.

[0015] Furthermore, the canopy mechanism and its corresponding pair of retaining wall mechanisms constitute a canopy module, and a plurality of canopy modules are arranged in sequence, and adjacent canopy modules are connected.

[0016] The second object of the present invention is to provide a construction method of the assembled foundation pit canopy system as described in the first object, comprising:

[0017] Retaining wall mechanisms are fixed on the edges of both sides of the foundation pit, and both ends of the canopy mechanism are connected to the retaining wall mechanisms on both sides of the foundation pit;

[0018] The telescopic bracket drives the movable fan blade to move, so that the two fan blades of the movable fan blade rotate relative to each other;

[0019] When the movable fan blades are unfolded, the two fan blades of the movable fan blades rotate relative to each other and the angle between them gradually increases, so that the entire canopy mechanism forms a shielding structure on the top of the foundation pit;

[0020] When the movable fan blades are folded, the two fan blades of the movable fan blades rotate relative to each other and the angle between them gradually decreases, so that the entire canopy mechanism shrinks to one side, and other positions where the movable fan blades are not distributed are opened.

[0021] Furthermore, a plurality of pairs of retaining wall mechanisms are sequentially arranged on the foundation pit, and the movement of the movable fan blades on the canopy mechanism is adjusted so that the telescopic brackets on adjacent canopy mechanisms are contracted in different directions, thereby forming a passage for external objects to pass through.

[0022] Compared with the prior art, the present invention has the following advantages and positive effects:

[0023] (1) In view of the problem that the current foundation pit dustproof canopy is difficult to open on demand and has poor flexibility in protecting the foundation pit, a canopy module is composed of a retaining wall mechanism and a canopy mechanism. The retaining wall mechanism is arranged at the edge of the foundation pit as the supporting structure of the canopy mechanism. The canopy mechanism uses a telescopic bracket to drive multiple movable fan blades to expand or fold the movable fan blades. When the movable fan blades are expanded, they can fully or partially cover the foundation pit opening at their location. When the movable fan blades are folded, they can return to one side to open the foundation pit, thereby achieving the purpose of flexible opening and protection of the foundation pit, and meeting the on-site work needs of the foundation pit such as dust prevention, sound insulation, sun protection, heat preservation, rain protection and light shading.

[0024] (2) The telescopic bracket adopts a scissor-type structure, which is connected to the end of the movable fan blade. When the scissor-type structure is extended or retracted, the movable fan blade is driven to be expanded or folded. All movable fan blades of the same skylight module can move synchronously. After the movable fan blades are expanded, the edges of adjacent movable fan blades can overlap, and magnetic strips are provided at the overlapping positions, so that the adjacent movable fan blades fit closely together, thereby forming a complete shielding protection and improving the protection effect. When the movable fan blades are folded, the overlapping positions corresponding to the magnetic strips can be driven to separate without affecting the folding of the fan blades.

[0025] (3) Each canopy module is equipped with a corresponding canopy mechanism, so that the canopy module can be opened or closed individually, and the foundation pit at the corresponding position can be opened as needed to meet the needs of lifting and conveying equipment.

[0026] (4) The retaining wall mechanism can be fixed on the edge of the foundation pit to ensure its stability. A shower head is provided on the side of the retaining wall mechanism facing the inside of the foundation pit, which can be connected to an external water source to spray water into the foundation pit to suppress dust in the foundation pit. The side of the retaining wall mechanism away from the foundation pit is a water retaining plate, which can protrude from the edge of the foundation pit to protect the edge of the foundation pit and reduce the flow of external water into the foundation pit.

[0027] (5) A drainage hole is provided on the water retaining plate on the side of the retaining wall mechanism where the skylight module is installed, so that the accumulated water on the top can be effectively discharged after the movable fan blades are unfolded, thereby reducing the leakage of accumulated water through the movable fan blades into the foundation pit below and improving the rain protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 It is a schematic diagram of the assembled foundation pit skylight system in Examples 1 and 2 of the present invention.

[0030] Figure 2 Schematic diagram of the retaining wall mechanism in Examples 1 and 2 of the present invention.

[0031] Figure 3 Schematic diagram of the canopy mechanism in Examples 1 and 2 of the present invention.

[0032] Figure 4 It is a schematic diagram of the movable fan blades in embodiments 1 and 2 of the present invention when unfolded.

[0033] Figure 5 Schematic diagram of the connection between the movable fan blade and the scissor structure in Examples 1 and 2 of the present invention.

[0034] Figure 6 It is a schematic diagram of the movable fan blades in embodiments 1 and 2 of the present invention when they are folded.

[0035] Among them, 1-retaining wall mechanism, 2-canopy mechanism, 3-supporting wall, 4-vertical assembly groove, 5-rainfall sleeve, 6-expansion bolt, 7-canopy slide groove, 8-shower head, 9-sleeve joint, 10-steering block, 11-horizontal assembly groove, 12-drain hole, 13-water retaining plate, 14-support, 15-exhaust hole, 16-pin shaft, 17-transmission part, 18-movable fan blade, 19-pushing block, 20-telescopic bracket, 21-fan blade, 22-hinge. DETAILED DESCRIPTION

[0036] Example 1

[0037] In a typical embodiment of the present invention, Figure 1-Figure 6As shown, a prefabricated foundation pit canopy system is provided.

[0038] During foundation pit construction, especially for deeper foundation pits, such as open-cut subway station construction, in order to prevent and control dust, dust-proof nets are covered, but the dust-proof nets are fixed in position, inconvenient to adjust in time, and easy to pollute the environment. The enclosure form has limited effect in densely populated urban areas, and the dust-proof canopy has poor sound insulation effect. The existing dust-proof canopy system can only be moved as a whole, and cannot be partially opened or closed, which makes it difficult to meet diverse protection needs. Based on this, the present embodiment provides an assembled foundation pit canopy system, which uses a retaining wall mechanism 1 and a canopy mechanism 2 to form a canopy module, and multiple canopy modules are used in combination. The retaining wall mechanism 1 is arranged at the edge of the foundation pit as a supporting structure of the canopy mechanism 2. The canopy mechanism 2 can be unfolded or folded according to needs. It can play a good shielding role when unfolded, and can open the top opening of the foundation pit when folded. Each canopy mechanism 2 can be adjusted and controlled individually to achieve flexible adjustment.

[0039] like Figure 1 As shown, an assembled foundation pit canopy system mainly includes a retaining wall mechanism 1 and a canopy mechanism 2. The retaining wall mechanisms 1 are arranged in pairs, and the two retaining wall mechanisms 1 in the same pair are arranged at intervals. The canopy mechanism 2 includes a telescopic bracket 20 and a movable fan 18. The telescopic bracket 20 drives the movable fan 18 to expand or fold. When multiple canopy mechanisms 2 are arranged on the foundation pit, the movement of the canopy mechanism 2 can be controlled as needed, thereby providing a more flexible and multifunctional foundation pit protection solution.

[0040] Among them, the retaining wall mechanism 1 is arranged in pairs at the edge of the foundation pit, and each pair of retaining wall mechanisms 1 is arranged at intervals to serve as a supporting structure for the canopy mechanism 2. In addition, after being arranged at the edge of the foundation pit, the retaining wall mechanism 1 can protrude from the ground at the edge of the foundation pit, thereby forming a water retaining plate 13. At the same time, the retaining wall mechanism 1 itself also has certain sound insulation and rain protection functions, thereby enhancing the overall protection effect of the foundation pit.

[0041] The canopy mechanism 2 includes a telescopic bracket 20 and a movable fan 18. The telescopic bracket 20 adopts a scissor-type structure and is installed on the retaining wall mechanism 1. The scissor-type structure is formed by hinged multi-stage scissor-type arms. A pin 16 is provided at the cross position of the scissor-type arms. The adjacent stages of the scissor-type arms are rotatably connected by a rotating shaft. When the telescopic bracket 20 is telescoped as a whole, the pin 16 of the scissor-type arm follows the movement and serves as a driving element for the movable fan 18 to be unfolded and folded.

[0042] The movable fan blade 18 is composed of a fan blade 21 and a hinge 22. The two fan blades 21 are connected by the hinge 22 to form a rotating joint. The two ends of the movable fan blade 18 are respectively connected to the pins 16 of the telescopic brackets 20 on the same pair and different retaining wall mechanisms 1, that is, one end of the movable fan blade 18 is connected to the telescopic bracket 20 on the retaining wall mechanism 1 on one side of the foundation pit, and the other end is connected to the telescopic bracket 20 on the retaining wall mechanism 1 on the other side of the foundation pit.

[0043] When the telescopic bracket 20 is extended or retracted, the pin shaft 16 drives the movable fan blade 18 to rotate around the hinge 22, thereby realizing the expansion or folding of the movable fan blade 18. When expanded, the movable fan blade 18 can completely or partially cover the foundation pit opening; when folded, the movable fan blade 18 returns to one side, and the foundation pit at the position not covered by the movable fan blade 18 is in an open state.

[0044] Through the design of the telescopic bracket 20 and the movable fan blade 18, the canopy can be flexibly opened and closed, and the foundation pit can be partially or completely covered as needed, greatly improving the flexibility of construction. The system not only has a dustproof function, but also can achieve a variety of protection needs such as sound insulation, sun protection, heat preservation, rain protection and light shading by adjusting the number and position of the movable fan blades 18. The movable fan blades 18 are reusable, avoiding the environmental pollution problem caused by the dustproof net entering the fill during construction. The combined use of the retaining wall mechanism 1 and the movable fan blades 18 enhances the sound insulation ability of the system and effectively reduces the impact of construction noise on the surrounding environment.

[0045] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic bracket 20 adopts a scissor structure formed by hinged multi-stage scissor arms. The telescopic bracket 20 is more stable during the telescopic process and can bear a larger weight. The multi-stage design can also make the telescopic bracket 20 have a wider telescopic range, so that the span of a single canopy mechanism 2 is larger and can adapt to foundation pits of different sizes.

[0046] like Figure 5 As shown, the telescopic bracket 20 is connected with multiple groups of movable blades 18, and the multiple groups of movable blades 18 are arranged in sequence along the telescopic direction of the telescopic bracket 20. The multiple groups of movable blades 18 can move more flexibly, and when the movable blades 18 are fully extended, the canopy mechanism 2 can cover the foundation pit opening more comprehensively; when the movable blades 18 are not fully extended, the canopy mechanism 2 can form a partially shielded and partially open structure to meet the ventilation and partial sunshade requirements, and when the movable blades 18 are damaged, the damaged movable blades 18 can be replaced separately.

[0047] By controlling the expansion or folding of the movable blades 18 of different canopy mechanisms 2, a partial or overall shielding effect can be achieved.

[0048] At least one side edge of the movable fan blade 18 is provided with a magnetic attraction portion, which can be a magnetic attraction strip, a magnetic attraction block, etc., or a soft magnetic strip can be attached to the movable fan blade 18 according to the needs. When the whole fan blade 18 needs to be shielded to meet the needs of sunshade, dustproof or rainproof, the movable fan blade 18 can be fully unfolded, and the magnetic attraction portion on one movable fan blade 18 can absorb the adjacent movable fan blades 18 to form a tight fit between them. The sealing of the canopy system is enhanced, which helps to better prevent the leakage of dust and noise.

[0049] The two ends of the fan blade 21 are respectively connected to the pin shaft 16 through the transmission member 17, and the pin shafts 16 connected to the same fan blade 21 are coaxially distributed. The rotation axis of the hinge 22 is located between the two different pin shafts 16 connected to the movable fan blade 18. The transmission member 17 can be a steel cable, an elastic rod, etc. The pin shafts 16 of the different telescopic brackets 20 located at the two ends of the fan blade 21 are connected through the transmission member 17, and then the fan blade 21 is rotatably connected to the transmission member 17, such as Figure 5 As shown, when the spacing between adjacent pin shafts 16 changes, the pin shaft 16 drives the two adjacent transmission members 17 to change the spacing, thereby driving the angle between the two fan blades 21 corresponding to the movable fan blade 18 to change, realizing the unfolding or folding action, ensuring the stability and reliability of the fan blade 21 during the unfolding or folding process.

[0050] The surface of the fan blade 21 can also be provided with green grass felt, which is not only beautiful but also further reduces the sound of rain hitting. The fan blade 21 can also be provided with sound-absorbing cotton and LED lighting strips inside to further reduce noise and adapt to nighttime construction. The fan blade 21 can also be provided with exhaust holes 15 to meet basic ventilation needs.

[0051] like Figure 3 As shown, the telescopic bracket 20 is provided with a push block 19 at both ends of the telescopic direction, and the retaining wall mechanism 1 is provided with a canopy slide groove 7 that slides with the push block 19. The telescopic bracket 20 can be smoothly extended and retracted under the guidance of the canopy slide groove 7, and at the same time, by controlling the movement of the push block 19, the telescopic bracket 20 can be accurately controlled.

[0052] The push block 19 is equipped with a translation drive mechanism, which can be a motor, a cylinder or other forms of driving devices, or a screw slider mechanism, a gear rack mechanism or other transmission elements for auxiliary action. Through the action of the translation drive mechanism, the push block 19 can be driven to slide along the canopy slide groove 7, thereby driving the telescopic bracket 20 to extend and retract. The automatic control of the canopy system is realized, and the construction efficiency is improved.

[0053] The canopy mechanism 2 and its corresponding pair of retaining wall mechanisms 1 constitute a canopy module. The multiple canopy modules are arranged in sequence, and adjacent canopy modules are connected.

[0054] like Figure 2 As shown, a water-reducing sleeve 5 capable of accessing a water source is provided on one side of the support 14 in the retaining wall mechanism 1, and the sleeve is connected to a shower nozzle 8. The canopy system not only has dust-proof and sound-proof functions, but also can perform water-reducing operations in the foundation pit. Spraying water through the shower nozzle 8 can reduce the temperature in the foundation pit, reduce dust, and help consolidate the soil.

[0055] A support wall 3 is provided on the other side of the support 14, and the wall protrudes from the top surface of the support 14, providing stable support for the telescopic bracket 20 and the movable fan blade 18. In the telescopic direction of the telescopic bracket 20, the two ends of the support wall 3 are respectively provided with a docking portion, and the adjacent support walls 3 corresponding to the adjacent retaining wall mechanisms 1 can be connected through the docking portion. The docking portion can adopt a combination structure of a vertical assembly groove 4 and a vertical assembly protrusion, or other mortise and tenon structures, etc., which enhances the overall stability of the canopy system and enables multiple canopy modules to be arranged in sequence and connected to each other.

[0056] The dewatering sleeves 5 corresponding to the adjacent retaining wall mechanisms 1 are connected and connected to each other, so as to facilitate access to an external water source, and to supply water to the dewatering sleeves 5 on all the retaining wall mechanisms 1 on the same side. The adjacent dewatering sleeves 5 are connected through sleeve joints 9. At the same time, a drainage hole 12 is also provided on the retaining wall to discharge the accumulated water in the foundation pit when necessary. The dewatering sleeve 5 is installed on the support 14 through the steering block 10. The dewatering sleeve 5 can rotate relative to the support 14 with the steering block 10, so that the shower head 8 can adjust its direction to meet the spraying and dust reduction requirements at different positions.

[0057] The side of the retaining wall mechanism 1 away from the foundation pit is a water retaining plate 13, which can protrude from the edge of the foundation pit to protect the edge of the foundation pit and reduce the flow of external water into the foundation pit. The retaining wall mechanism 1 can be fixed to the edge of the foundation pit by expansion bolts 6. In addition, Figure 2 As shown, a transverse assembly groove 11 is also provided on the top of the water retaining plate 13, and the transverse assembly groove 11 can be plugged with other plates to increase the height of the water retaining plate 13, or plugged with other protective structures to improve the protective ability of the assembled foundation pit canopy system. A short protrusion exists at the end of the outer side of the foundation pit on the supporting wall 3 to enhance the tightness of the water seal.

[0058] A drainage hole 12 is provided on the water retaining plate 13 on the side where the canopy module is installed in the retaining wall mechanism 1, so that the accumulated water on the top can be effectively discharged after the movable fan blades 18 are unfolded, reducing the leakage of accumulated water through the movable fan blades 18 into the foundation pit below, thereby improving the rainproof effect.

[0059] The canopy mechanism 2 and the corresponding pair of retaining wall mechanisms 1 together constitute a canopy module. This modular design makes the canopy system easier to install, disassemble and maintain. Multiple canopy modules can be arranged in sequence at the edge of the foundation pit, and adjacent canopy modules are connected to each other through the docking parts of the supporting walls 3. The canopy system can cover the entire foundation pit opening and has sufficient strength and stability to cope with various construction conditions.

[0060] The assembled foundation pit canopy system in this embodiment achieves comprehensive control of dust, noise, high temperature, low temperature, flood control in rainy season and night construction during the foundation pit construction process through structural design and functional integration. Its flexibility and diverse protection functions not only improve construction efficiency and quality, but also reduce the impact on the surrounding environment.

[0061] Example 2

[0062] In another typical embodiment of the present invention, Figure 1-Figure 6 As shown, a construction method of an assembled foundation pit canopy system is provided, using the assembled foundation pit canopy system as in Example 1.

[0063] A construction method of an assembled foundation pit canopy system, comprising:

[0064] The retaining wall mechanisms 1 are fixed to the edges of both sides of the foundation pit, and the two ends of the canopy mechanism 2 are connected to the retaining wall mechanisms 1 on both sides of the foundation pit;

[0065] The telescopic bracket 20 drives the movable fan blade 18 to move, so that the two fan blades 21 of the movable fan blade 18 rotate relative to each other;

[0066] When the movable fan blade 18 is unfolded, the two fan blades 21 of the movable fan blade 18 rotate relative to each other and the angle between them gradually increases, so that the entire canopy mechanism 2 forms a shielding structure on the top of the foundation pit;

[0067] When the movable fan blades 18 are folded, the two fan blades 21 of the movable fan blades 18 rotate relative to each other and the angle between them gradually decreases, so that the entire canopy mechanism 2 shrinks to one side, and other positions where the movable fan blades 18 are not distributed are opened.

[0068] Among them, multiple pairs of retaining wall mechanisms 1 are arranged in sequence on the foundation pit. The retaining wall mechanisms 1 can be fixed to the edge of the foundation pit by expansion bolts 6. The movable fan blades 18 on the canopy mechanism 2 are adjusted to make the telescopic brackets 20 on adjacent canopy mechanisms 2 shrink in different directions to form a channel for external objects to pass through.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled foundation pit canopy system, It is characterized in that include: The retaining wall mechanisms are arranged in pairs, and the two retaining wall mechanisms in the same pair are arranged at intervals; The canopy mechanism includes a telescopic bracket and a movable fan piece. The telescopic bracket is a scissor-type structure and is installed on the retaining wall mechanism. A pin is provided at the cross position of the scissor arms of the scissor-type structure. Both ends of the movable fan piece are respectively connected to the telescopic bracket on the same pair and different retaining wall mechanisms; the movable fan piece includes a fan piece and a hinge. The two fan pieces are rotatably connected by the hinge and are respectively connected to different pins of the scissor-type structure. They move with the pin to realize the expansion or folding of the movable fan piece.

2. The assembled foundation pit canopy system according to claim 1, It is characterized in that The telescopic bracket is a scissor-fork structure formed by hinged multi-stage scissor-fork arms. The telescopic bracket is connected to multiple groups of movable fan blades, and the multiple groups of movable fan blades are arranged in sequence along the telescopic direction of the telescopic bracket.

3. The assembled foundation pit canopy system according to claim 2, It is characterized in that In the movable fan piece connected to the telescopic bracket, at least one side edge of the movable fan piece is provided with a magnetic attraction portion, so as to attract adjacent movable fan pieces to form a fit when the movable fan piece is unfolded.

4. The assembled foundation pit canopy system according to claim 1, It is characterized in that The two ends of the fan piece are respectively rotatably connected to the pin shafts through a transmission member, the pin shafts connected to the same fan piece are coaxially distributed, and the rotation axis of the hinge is located between the two different pin shafts connected to the movable fan piece.

5. The assembled foundation pit canopy system according to claim 4, It is characterized in that The telescopic bracket is provided with a pushing block at both ends of its telescopic direction, and a canopy slide groove is provided on the retaining wall mechanism. The pushing block is slidably matched with the canopy slide groove, and the canopy slide groove is distributed along the telescopic direction of the telescopic bracket. The pushing block is matched with a translation driving mechanism to drive the pushing block to slide along the canopy slide groove.

6. The assembled foundation pit canopy system according to claim 1, It is characterized in that The retaining wall mechanism comprises a support, one side of the support is provided with a precipitation sleeve which can be connected to a water source, the precipitation sleeve is connected to a shower head, and the other side of the support is provided with a supporting wall which protrudes from the top surface of the support.

7. The assembled foundation pit canopy system according to claim 6, It is characterized in that In the telescopic direction of the telescopic bracket, the two ends of the support wall are respectively provided with docking parts, the adjacent support walls corresponding to the adjacent retaining wall mechanisms are connected through the docking parts, and the dewatering sleeves corresponding to the adjacent retaining wall mechanisms are connected to each other; a drainage hole is opened on the retaining wall.

8. The assembled foundation pit canopy system according to claim 1, It is characterized in that The canopy mechanism and a pair of corresponding retaining wall mechanisms constitute a canopy module. A plurality of canopy modules are arranged in sequence, and adjacent canopy modules are connected.

9. A construction method for an assembled foundation pit canopy system, using the assembled foundation pit canopy system as claimed in any one of claims 1 to 8, It is characterized in that include: Retaining wall mechanisms are fixed on the edges of both sides of the foundation pit, and both ends of the canopy mechanism are connected to the retaining wall mechanisms on both sides of the foundation pit; The telescopic bracket drives the movable fan blade to move, so that the two fan blades of the movable fan blade rotate relative to each other; When the movable fan blades are unfolded, the two fan blades of the movable fan blades rotate relative to each other and the angle between them gradually increases, so that the entire canopy mechanism forms a shielding structure on the top of the foundation pit; When the movable fan blades are folded, the two fan blades of the movable fan blades rotate relative to each other and the angle between them gradually decreases, so that the entire canopy mechanism shrinks to one side, and other positions where the movable fan blades are not distributed are opened.

10. The construction method of the assembled foundation pit canopy system according to claim 9, It is characterized in that A plurality of pairs of retaining wall mechanisms are sequentially arranged on the foundation pit, and the movement of the movable fan blades on the canopy mechanism is adjusted so that the telescopic brackets on adjacent canopy mechanisms are contracted in different directions to form a passage for external objects to pass through.

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