Modular detachable elevator foundation pit support and construction method thereof

Abstract

The present application relates to a kind of modular detachable elevator foundation pit support device, comprising: fixed support and connecting steel plate;Fixed support is vertically fixed to ground surface setting, and multiple fixed supports are enclosed into a square, and fixed support includes connecting rod and adapter rod;Connecting steel plate is detachably connected on adjacent two fixed supports.Fixed support is installed in elevator foundation pit, and embedded below ground surface, connecting steel plate is connected on fixed support, and the whole is enclosed into a square, to form a safe construction position, detachable connection between the fixed support and connecting steel plate described above, so that the support structure can be reused.According to the size of foundation pit, different types of connecting steel plate and support are connected, so that the support type is variable.After construction, the support structure can be directly removed, construction is convenient, greatly improves construction efficiency, reduces the problem of building pollution.

Description

TECHNICAL FIELD

[0001] The application relates to installation of an old elevator, in particular to a modular detachable elevator foundation pit support and a construction method thereof. BACKGROUND

[0002] At present, an elevator is installed in a multi-storey house without an elevator, shallow foundation pit support in such a narrow space is usually supported by simple slope net spraying support, soil nailing wall support, micro pile composite soil nailing wall support, cement mixing pile and Larsen steel sheet pile support, a large construction space needs to be provided underground, and in the actual construction process, the support structure cannot be reused due to geological conditions and site factors, the environment is polluted, the construction period is long, and the foundation pit is located at the entrance of a unit building, thereby affecting resident travel safety. SUMMARY

[0003] The application aims to provide a modular detachable elevator foundation pit support and a construction method thereof, and solve the problems of limited support selection, difficult equipment access, non-reusable support structure, more building pollution to the environment and resident travel safety under the existing narrow site conditions.

[0004] The technical scheme for solving the above technical problems is as follows: a modular detachable elevator foundation pit support device comprises a fixed support and a connecting steel plate; the fixed support is vertically fixed on a foundation surface, and a plurality of fixed supports are enclosed to form a square; the fixed support comprises a connecting rod and an adapter rod; the connecting steel plate is detachably connected to the adjacent two fixed supports; the connecting rod is connected to a planar connection position; and the adapter rod is connected to a folded surface connection position.

[0005] The application has the advantages that: the fixed support is installed in the elevator foundation pit and inserted into the foundation surface, and the connecting steel plate is connected to the fixed support, so that a square is formed, thereby forming a safe construction position; the fixed support and the connecting steel plate are detachably connected, so that the support structure can be reused, and the construction efficiency is greatly improved and the building pollution problem is reduced after the construction is completed; when the light-weight trestle is used, a safe passage is formed at the foundation pit opening, and when the light-weight trestle is recycled, the upper space of the foundation pit is released, thereby facilitating construction.

[0006] On the basis of the above technical scheme, the application can be further improved as follows.

[0007] Further, in order to facilitate the connection between the adapter rod and the connecting steel plate, the adapter position is set to be a right angle to ensure that a square is finally formed, the adapter rod is provided with two mounting grooves for nesting the connecting steel plate, and the grooves of the two mounting grooves are perpendicular to each other.

[0008] Further, in order to facilitate the connection between the connecting rod and the connecting steel plate, two mounting grooves are arranged on the connecting rod, which can nest the connecting steel plate. The grooves of the two mounting grooves are opposite and belong to the same plane.

[0009] Further, in order to ensure that the first connecting plate at the lowermost side can be stably inserted into the foundation surface, the second connecting plate is enclosed and shielded, so that only the first connecting plate needs to be specially provided with a side edge in the shape of a blade. The connecting steel plate includes the first connecting plate and the second connecting plate. The first connecting plate is arranged on the side close to the foundation surface, and the second connecting plate is arranged on the upper part of the first connecting plate. The side edge of the first connecting plate close to the foundation surface is provided in the shape of a blade.

[0010] Further, the length of the fixed connecting plate is not adjustable, which facilitates installation. The first connecting plate or the second connecting plate is arranged as a fixed connecting plate. The fixed connecting plate includes two parallel steel plates. A triangular steel skeleton or a corrugated steel skeleton support is arranged between the two parallel steel plates.

[0011] Further, the adjusting connecting plate is used to adapt to the irregular width of the elevator foundation pit. The first connecting plate or the second connecting plate is arranged as an adjusting connecting plate. An adjusting part is arranged in the middle of the adjusting connecting plate. The adjusting part includes two ends that can move relative to each other. One end is provided with an insertion part, and the other end is provided with a receiving part. The insertion part can slide in the receiving part, and the receiving part is provided with a limiting block to prevent the insertion part from sliding out.

[0012] Further, in order to facilitate the entry and exit of personnel in the building, a lightweight trestle is arranged above the elevator foundation pit. The lightweight trestle is rotatably installed on the bottom of the building wall through a hinge on one side, and at least two symmetrical connecting points are arranged. The other side of the lightweight trestle is installed on the building wall through a pulley block. The pulley block includes a pulley and a steel wire rope. One side of the steel wire rope is fixedly installed on the pulley, and the other side is fixedly installed on the end of the lightweight trestle. The pulley is fixedly installed on the building wall. When the pulley rotates, it can drive the steel wire rope to pull the lightweight trestle.

[0013] Further, the lightweight trestle covers at least the entire elevator foundation pit opening, and expansion bolts are used to connect the lightweight trestle and the bottom of the building wall.

[0014] A construction method applied to a modular detachable elevator foundation pit support device, comprising:

[0015] S1: hole forming construction, simultaneously design the fixed support position, install the fixed support in the hole, and ensure that the top end of the fixed support is not higher than the foundation surface;

[0016] S2: install the first connecting plate, fix the first connecting plate to the foundation surface, and then install the second connecting plate;

[0017] S3: Measure the size of the elevator foundation pit and its location, design the installation point of the lightweight trestle, and install the pulley block on the corresponding position of the building wall;

[0018] S4: Install the lightweight trestle on the building wall and connect the pulley block.

[0019] Further, the above S1 hole forming construction uses a micro drilling machine to form a hole.

[0020] The beneficial effects of the above further scheme are:

[0021] 1. The lightweight trestle is set to ensure normal traffic of residents in the community, release the upper space of the foundation pit, and reduce the impact on non-construction personnel after the excavation of the foundation pit;

[0022] 2. The bracket with a groove is used to cooperate with the connecting steel plate to ensure the deviation rate of the connecting plate during construction and make the bracket and the connecting steel plate convenient to operate when they are removed;

[0023] 3. The problem of elevator foundation pit support under narrow space conditions can be solved to ensure the safety of workers in the pit;

[0024] 4. In the construction method, the size of the structural member can be prefabricated, the support structure can be reused, the construction cost is saved, the environmental pollution is small, and the quality is controllable;

[0025] 5. The coating material of the structural member has the effect of electro-osmotic water absorption, which helps the downward penetration of underground water in the pit and reduces the phenomenon of water accumulation in the foundation pit;

[0026] 6. The structural member is externally adhered with carbon fiber cloth to increase the tensile performance of the structure;

[0027] 7. The support structure can be removed with excavation, and large construction equipment is not needed during the installation and removal process, which is easy to operate, convenient, fast, shortens the construction period, and has less impact on the surrounding environment;

[0028] 8. The length and spacing of the steel pile can be flexibly selected according to the depth and size of the engineering foundation pit, and the skeleton steel plate can be increased or decreased to ensure the safety of the foundation pit support. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The entire device installation three-dimensional structure schematic diagram provided by the embodiment of the application;

[0030] Figure 2 The three-dimensional structure schematic diagram of the lightweight trestle provided by the embodiment of the application;

[0031] Figure 3 The structure schematic diagram of the fixed connecting plate provided by the embodiment of the application;

[0032] Figure 4This is a schematic diagram of the structure of the adjusting steel plate provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of the recovery device provided in an embodiment of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Fixed bracket, 101-Connecting rod, 102-Adapter rod, 103-Mounting groove, 2-Connecting steel plate, 201-First connecting plate, 202-Second connecting plate, 3-Lightweight trestle, 4-Hinge, 5-Pulley block, 501-Pulley, 502-Wire rope, 6-Elevator pit, 7-Fixed connecting plate, 701-Triangular steel frame, 8-Adjustable connecting plate, 801-Insertion piece, 802-Accommodation piece, 9-Building wall, 10-Crawler track, 11-Lifting piece. Detailed Implementation

[0036] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0037] Example 1

[0038] A modular, detachable elevator pit support device, such as Figures 1-4 As shown, it includes: a fixed bracket 1 and a connecting steel plate 2; the fixed bracket 1 is vertically fixed to the foundation surface, and multiple fixed brackets 1 form a square; the fixed bracket 1 includes a connecting rod 101 and an adapter rod 102; the connecting steel plate 2 is detachably connected to two adjacent fixed brackets 1, the connecting rod 101 is connected at the plane connection position, and the adapter rod 102 is connected at the folded connection position.

[0039] The beneficial effects of the present invention are as follows: the fixed bracket 1 is installed in the elevator pit 6 and inserted into the foundation surface, and the connecting steel plate 2 is connected to the fixed bracket 1, forming a square, thereby creating a safe construction position. The fixed bracket 1 and the connecting steel plate 2 are detachably connected, which allows the support structure to be reused and can be directly removed after construction is completed, greatly reducing the problem of building pollution.

[0040] In this embodiment, to facilitate the connection between the adapter rod 102 and the connecting steel plate 2, the transition position is set at a right angle to ensure that a square shape is formed in the end. The adapter rod 102 has two mounting grooves 103 for nesting the connecting steel plate 2, with the grooves of the two mounting grooves 103 facing perpendicularly to each other. To facilitate the connection between the connecting rod 101 and the connecting steel plate 2, the connecting rod 101 also has two mounting grooves 103 for nesting the connecting steel plate 2, with the grooves of the two mounting grooves facing opposite directions and belonging to the same plane. To ensure that the lowermost first connecting plate 201 can be stably inserted into the foundation surface, the second connecting plate 202 serves a containment function; therefore, only the first connecting plate 201 needs to have one side specially designed as a blade shape. The connecting steel plate 2 includes a first connecting plate 201 and a second connecting plate 202. The first connecting plate 201 is located on the side closest to the foundation surface, and the second connecting plate 202 is located above the first connecting plate 201; the side of the first connecting plate 201 closest to the foundation surface is designed as a blade shape. The connecting rod 101 can be set as an "H" steel or an "I" steel, for example: 16 I-beam steel, 16×16 H-beam steel fixing bracket 1, and the adapter rod 102 can be set as double 16b channel steel.

[0041] In this embodiment, the length of the fixed connecting plate 7 is not adjustable for easy installation. The first connecting plate 201 or the second connecting plate 202 is configured as the fixed connecting plate 7, which includes two parallel steel plates. A triangular steel frame 701 is provided between the two parallel steel plates for connection and support. The adjustable connecting plate 8 is used to adapt to elevator bases with irregular widths. When the length of the adjustable connecting plate 8 needs to be adjusted, the insert 801 is pulled and slid inside the receiving member 802. Once slid to the desired position, screws can be driven in for fixation or welded in place. When removal is required, the welds can be removed or the screws removed. The first connecting plate 201 or the second connecting plate 202 is configured as the adjustable connecting plate 8, with an adjustment section in the middle. The adjustment section includes two movable ends, one end with an insert 801 and the other end with a receiving member 802. The insert 801 can slide inside the receiving member 802, and a limiting block is provided inside the receiving member 802 to prevent the insert 801 from sliding out.

[0042] The telescopic type connecting steel plate 2 can be provided as: adopting two thin-walled steel plates + middle triangular steel skeleton 701 frame support, wherein the telescopic part is embedded with triangular steel skeleton or corrugated steel skeleton 701 frame in a zigzag shape, and a sliding groove is arranged between the two outer steel plates on the same side, and when the telescopic length is maximum, the outer facade of the steel plate is a flat surface formed by parallel splicing of the two steel plates, and the manufacturing precision should be ensured during manufacturing to ensure that the skeleton nesting size is appropriate during the telescoping process. In addition, it can also be provided as: adopting two thin-walled steel plates + middle triangular steel skeleton 701 frame support, wherein the telescopic part has no steel skeleton, and a sliding groove is arranged between the two steel plates on the same side, and when the telescopic length is minimum, the telescopic part is formed by overlapping four steel plates, wherein the outer steel plate is larger and the inner steel plate is smaller, and the manufacturing precision should be ensured during manufacturing to ensure that the skeleton nesting size is appropriate during the telescoping process.

[0043] The whole process is: first, use a micro drilling machine to form a hole, and use a temporary fixed support 1 + a connecting steel plate 2 combination form to carry out modular foundation pit support, wherein the connecting steel plate 2 can select a splicing type and a telescopic type to ensure that the foundation pit support requirements of different sizes are met.

[0044] In order to ensure application in actual engineering, the fixed support 1 is designed in three forms, which are 16 I-shaped steel, 16x16H fixed support 1 and double-spliced 16b channel steel, the double-spliced 16b channel steel adopts a welding form, and the length of the fixed support 1 can be adjusted according to the depth of the foundation pit, and is selected between 3m-6m. On-site application of the three types of fixed support 1, test pile position deviation control, ease of pulling and inserting, and coupling matching degree with the connecting steel plate 2.

[0045] According to different sizes of foundation pits, different sizes of connecting steel plates 2 are selected for splicing or combined with splicing connecting steel plates 2 using telescopic connecting steel plates 2. The connecting steel plate 2 and the fixed support 1 and other equipment materials can be wrapped with carbon fiber cloth and other new materials to increase the tensile performance, sprayed with zinc-plated materials to increase the rust and corrosion resistance, sprayed with one-way liquid guide film and conductive layer to form a closed loop to generate electro-osmotic water absorption to help the underground water in the pit to penetrate downward, and to enhance the overall performance of the connecting steel plate 2.

[0046] The connecting steel plate 2 adopts two thin-walled steel plates + middle triangular steel skeleton 701 frame support, which reduces the weight of the whole steel plate to a certain extent, but ensures that the strength and rigidity of the steel plate are sufficient to resist the lateral soil pressure of the foundation pit, and the thickness of the whole connecting steel plate 2 is about 8-10 cm, which ensures that it matches the slot of the fixed support 1 and meets the lap joint between the connecting steel plate 2 and the fixed support 1. The first connecting steel plate 2, that is, the lower part of the first connecting steel plate 2, needs to be made into a similar caisson blade foot form, which facilitates the mechanical pressing into the soil body and reduces the resistance of the soil body. In addition, a lifting handle is arranged in each layer of the connecting steel plate 2, and after the service life of the foundation pit support equipment is reached and the internal soil body is backfilled, the preset handle and steel wire rope 502 or steel reinforcement hook are used for lifting, so that the connecting steel plate 2 can be finally lifted out of the soil body.

[0047] In actual use, first, the fixed support 1 is positioned with a spacing of 1 m or 1.5 m, and if it is necessary to ensure that the connecting steel plate 2 between the piles can be smoothly inserted into the fixed support 1, the spacing of the fixed support 1 can be appropriately enlarged, and two fixed supports 1 should be arranged at the corners in a one straight and one bent manner. During excavation, the exposed fixed supports 1 are welded at intervals by steel bars to ensure that the two piles bear force as a whole. After the fixed support 1 is set, the connecting steel plate 2 is used to press down in a straight line corresponding to each pile after layered excavation, until the first connecting steel plate 2 is placed at the predetermined depth. At this time, the second connecting steel plate 2 is placed above the first connecting steel plate 2, and continues to press down, until the subsequent connecting steel plates 2 all reach the predetermined depth, forming a pile and plate support system. After the modular foundation pit support equipment is completed, subsequent earth excavation can be carried out, and the surrounding soil is supported by the pile and plate support system during the implementation of the underground main structure, so as to ensure the internal worker operation space and safety. After the main structure is completed, backfilling is started, and after the backfilling is completed, the connecting steel plate 2 and the fixed support 1 are pulled out of the soil body by a machine. The gap left after pulling out should be filled with medium sand, and in special cases, cement slurry grouting treatment can be used.

[0048] During the foundation pit construction process, in order to avoid affecting the normal travel of residents, the invention combines with a conventional trestle and increases a foldable side guardrail, which is connected with the main structure of the podium by expansion bolts, changes the direction of force by using a winch + steel wire rope 502 + fixed pulley 501 near the transmission device, and automatically lifts the lightweight trestle 3 through remote control by a remote controller, so as to meet the needs of safe travel of residents.

[0049] Example 2

[0050] In the embodiment, in order to facilitate the personnel in the building to enter and exit, when the construction is needed in the elevator foundation pit 6, the light-weight trestle 3 is pulled up and leans against the building wall 9, and the elevator foundation pit 6 is exposed, when the construction is not needed in the elevator foundation pit 6, the light-weight trestle 3 is put down and covers the pit opening of the elevator foundation pit 6, and the personnel in the community can walk freely. The light-weight trestle 3 is arranged above the elevator foundation pit 6, one side of the light-weight trestle 3 is rotatably installed at the bottom of the building wall 9 through a hinge 4, and at least two symmetrical connecting points are arranged; the other side of the light-weight trestle 3 is installed on the building wall 9 through a pulley block 5; the pulley block 5 comprises a pulley 501 and a steel wire rope 502, one side of the steel wire rope 502 is fixedly installed on the pulley 501, and the other side is fixedly installed at the end of the light-weight trestle 3, the pulley 501 is fixedly installed on the building wall 9, and when the pulley 501 rotates, the steel wire rope 502 can be pulled to pull the light-weight trestle 3. The light-weight trestle 3 covers at least the whole pit opening of the elevator foundation pit 6, and expansion bolts are used at the connecting positions of the light-weight trestle 3 and the bottom of the building wall 9. During the construction of the elevator foundation pit 6, in order to avoid affecting the normal travel of residents, the invention combines with the conventional trestle, adds the foldable edge guardrail, is connected with the building main structure through expansion bolts, adopts a winch + a steel wire rope 502 + a fixed pulley 501 to change the direction of force near the transmission device, is remotely controlled through a remote controller, automatically lifts or lowers the light-weight trestle 3, and meets the needs of safe travel of residents.

[0051] The light-weight trestle 3 is applied to the trestle foundation which is widely used in the original mine method and is proportionally reduced, and the function of the original mine method trestle is changed from driving to being used for the residents to enter and exit the community. The foldable guardrail is arranged at the bottom of the trestle, when the guardrail is needed to be used, the guardrail is turned by 90° parallel to the trestle, and the trestle system with edge protection is formed. The light-weight trestle 3 has three supporting points, two of which are arranged on the building main structure, are fixed through expansion bolts, and are connected to the building main structure through the hinge 4, and the other connecting node is pulled through the fixed pulley 501 + the steel wire rope 502, and the power equipment adopts a winch, and the engine can be selected to rotate forward or reverse at a long distance, in the case of forward rotation, the light-weight trestle 3 is lowered to enable the residents to walk normally, and in the case of reverse rotation, the light-weight trestle 3 is lifted with the building structure as the supporting point, the upper space of the foundation pit is released, and the normal work of workers is ensured.

[0052] Embodiment 3

[0053] In the embodiment: a construction method applied to a modular detachable elevator foundation pit 6 supporting device, comprising: S1: hole forming construction, simultaneously design the position of the fixed support 1, install the fixed support 1 in the hole, and ensure that the top end of the fixed support 1 is not higher than the foundation surface; the hole forming construction uses a micro drilling machine to form a hole. S2: install the first connecting plate 201, fix the first connecting plate 201 to the foundation surface, and then install the second connecting plate 202; S3: measure the size and position of the elevator foundation pit 6, design the installation point of the lightweight trestle 3, and install the pulley block 5 on the corresponding position of the building wall 9; S4: install the lightweight trestle 3 on the building wall 9, and simultaneously connect the pulley block 5. First, point position measurement is performed to determine the size, relative position of the elevator foundation pit 6 and the point position of the fixed support 1, and then a micro drilling machine is used to form a hole. The hole spacing needs to be adjusted according to the different sizes of the foundation pit and matched with the connecting steel plate 2. The fixed support 1 is inserted into the formed pile hole to ensure the perpendicularity and spacing of the fixed support 1. The soil in the area of the proposed elevator foundation pit 6 is excavated, and the excavation depth should be consistent with the height of the single fixed support 1 and cannot be over-excavated. As the internal earthwork of the elevator foundation pit 6 is continuously excavated, the fixed support 1 is inserted from top to bottom, until the excavation reaches the design elevation of the foundation, and the fixed support 1 supports the soil on the side of the elevator foundation pit 6 to ensure the safety of the internal construction of the elevator foundation pit 6.

[0054] After the elevator main structure construction is completed, the fixed support 1 and the connecting steel plate 2 are pulled out and recycled by using a pipe gripper or a small excavator, and the holes in the residual soil of the connecting steel plate 2 and the fixed support 1 are backfilled with fine sand.

[0055] The present application greatly improves the stability of the foundation pit from the safety perspective, while also greatly controls the cost from the economic perspective. During the excavation of the foundation pit, the supporting structure can be disassembled as it is excavated, without the need for large construction equipment during assembly and disassembly, easy to operate, reusable, convenient and fast, shortens the construction period, and has less impact on the surrounding environment, providing a new idea for the installation of elevators in old residential areas and the research and development of related equipment and technology for small work pits. The supporting equipment can be applied to the foundation pit support and foundation treatment in most elevator installation conditions in old residential areas, significantly reducing the potential risks of surrounding soil during elevator construction, and ensuring construction safety. In summary, the technical scheme of the present application has the effects of convenient operation, shortened construction period, and reduced supporting cost and difficulty.

[0056] Embodiment 4

[0057] As Figure 5As shown, the device is provided with an automatic recycling device for connecting the steel plate 2, the recycling device comprises a rotating wheel set connected at both ends of the connecting rod 101 and the adapter rod 102, the rotating wheel set comprises a rotating shaft and a roller, the rotating shaft is installed at the end of the connecting rod 101 and the adapter rod 102, and the adapter rod 102 is connected with the outer motor shaft, which can rotate around its central axis at the connecting position, and the roller is fixedly sleeved on the rotating shaft and rotates with the rotating shaft. The rollers arranged at both ends are connected with the track 10, and one end of the connecting rod 101 and the adapter rod 102 inserted into the ground is provided with a protective plate, which is used to isolate the track 10 from the soil, so that the rotation of the track 10 will not be affected by the soil. The track is provided with a lifting piece 11 suitable for the first connecting plate 201, and the end of the first connecting plate 201 inserted into the ground surface is provided with a notch, and the notch is provided with a blade-shaped position inserted below the ground surface. The notch position is adapted between the lifting piece, preferably clamped, in use, before installation, the fixed support 1 is installed, and the track 10 is installed, the lifting piece 11 on the track 10 is adjusted, the position can prevent the first connecting plate 201, and the first connecting plate 201 is placed on the track 10, and the first connecting plate 201 is adjusted, and a plurality of second connecting plates 202 are placed at one time; when the connecting steel plate 2 is recycled, the roller is rotated, the lifting piece 11 on the track 10 is adjusted, the connecting steel plate 2 is lifted, and the connecting steel plate 2 is manually removed without the need of a crane, which is convenient to operate and more suitable for narrow space.

[0058] In addition, when the shape of the adapter rod 102 is special, a track 10 matched in design is used for connection, and when the connecting steel plate 2 is lighter, the track 10 can not be arranged at the adapter rod 102, and the lifting piece 11 on the corresponding side is arranged to be larger and has better bearing capacity. The lifting piece 11 described above is fixedly connected to the track 10, which can be a steel plate directly welded to the track 10, and a reinforcing rib can be added when needed to enhance the bearing capacity of the lifting piece 11. The track 10 is made of a metal material with toughness.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, the terms "first", "second", etc. are used only for the purpose of description and do not imply or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0063] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0064] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A modular demountable elevator caisson support device, characterized by, The utility model relates to a kind of steel connection plate and its recycling device, including: Fixed support (1) and connecting steel plate (2);The fixed support (1) is vertically fixed to ground surface setting, and multiple fixed supports (1) are enclosed into a cubic structure between, the fixed support (1) includes connecting rod (101) and adapter rod (102);The connecting steel plate (2) is detachably connected on adjacent two fixed supports (1), the connecting rod (101) is connected in the plane connection position of cubic structure, the adapter rod (102) is connected in the fold surface connection position of cubic structure;The connecting steel plate (2) includes first connecting plate (201) and second connecting plate (202), the first connecting plate (201) is set on the side close to ground surface, the second connecting plate (202) is set on the side away from ground surface of first connecting plate (201);The side of first connecting plate (201) close to ground surface is set as blade edge;The first connecting plate (201) and second connecting plate (202) are set as fixed connecting plate (7), the fixed connecting plate (7) includes two parallel steel plates, and three steel bones (701) are connected between the two parallel steel plates;Or, the first connecting plate (201) and second connecting plate (202) are set as adjusting connecting plate (8), and adjusting part is provided in the middle of adjusting connecting plate (8);Adjusting part includes two ends that can move mutually, one end is provided with insert (801), and one end is provided with accommodating member (802), the insert (801) can slide in the accommodating member (802);Recycling device for recycling connecting steel plate (2) is further provided, and recycling device includes rotating wheel group connected at both ends of connecting rod (101) and adapter rod (102), rotating wheel group includes rotating shaft and roller, rotating shaft is installed at the end of connecting rod (101) and adapter rod (102), and adapter rod (102) is connected with motor shaft, can rotate around its central axis in connecting position, the roller is fixedly sleeved on the rotating shaft and rotates with the rotating shaft, the roller provided at both ends is connected with track (10), and the end of connecting rod (101) and adapter rod (102) close to ground surface is provided with protection plate, the protection plate is used to isolate track (10) and soil, and lifting piece (11) suitable for first connecting plate (201) is provided on track (10), The end of first connecting plate (201) inserted into ground surface is provided with notch, the notch is provided with blade edge position inserted below ground surface, and the notch position is adapted between lifting piece.

2. A modular demountable elevator pit support apparatus according to claim 1, wherein, The adapter rod (102) is provided with two mounting grooves (103) that can nest connecting steel plate (2), and the grooves of two mounting grooves (103) are perpendicular to each other.

3. A modular demountable elevator pit support apparatus according to claim 1, wherein, The connecting rod (101) is provided with two mounting grooves (103) that can nest connecting steel plate (2), and the grooves of two mounting grooves (103) are opposite and belong to the same plane.

4. A modular demountable elevator pit support apparatus according to claim 1, wherein, The material of connecting plate is carbon fiber cloth pasted steel plate, and the surface is sprayed with one-way liquid film or conductive layer.

5. A modular demountable elevator pit support arrangement according to any one of claims 1-4, characterized in that, The upper part of the elevator foundation pit (6) is provided with a lightweight trestle (3), which is rotatably installed at the bottom of the building wall (9) through a hinge (4) on one side, and at least two connection points are provided; the other side of the lightweight trestle (3) is installed on the building wall (9) through a pulley block (5); the pulley block (5) includes a pulley and a steel wire rope (502), one side of the steel wire rope (502) is fixedly installed on the pulley (501), the other side is fixedly installed at the end of the lightweight trestle (3), the axle of the pulley (501) is fixedly installed on the building wall (9), and the pulley (501) rotates around the axle to drive the steel wire rope (502) to pull the lightweight trestle (3).

6. A modular demountable elevator pit support apparatus according to claim 5, wherein, The lightweight trestle (3) covers at least the entire pit opening of the elevator foundation pit (6), and expansion bolts are used to connect the lightweight trestle (3) and the bottom of the building wall (9).

7. A construction method applied to the modular and detachable elevator foundation pit support device of claim 6, characterized in that, Comprise: S1: hole forming construction at the position of the elevator foundation pit on the foundation surface, while designing the position of the fixed support (1), installing the fixed support (1) in the hole, and ensuring that the top end of the fixed support (1) is not higher than the foundation surface; S2: install the first connecting plate (201), fix the first connecting plate (201) to the foundation surface, and then install the second connecting plate (202); S3: measure the size and position of the elevator foundation pit (6), design the installation point of the lightweight trestle (3), and install the pulley block (5) on the building wall (9) at the corresponding position; S4: install the lightweight trestle (3) on the building wall (9), and connect the pulley block (5) at the same time.

8. A method of construction according to claim 7, wherein, The above S1 hole forming construction uses a micro drilling machine to form a hole.

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