A stable foundation pit support frame

Abstract

The application provides a stable foundation pit support frame, comprising a fixed plate, two movable plates, the top ends of the two movable plates being slidably connected with the fixed plate, an adjusting device, the adjusting device being connected with the two movable plates and being used for driving the two movable plates to move close to or away from each other, and a plurality of connecting devices, the connecting devices comprising a left protection plate, a right protection plate and a locking piece, the left protection plate and the right protection plate each having oppositely arranged first and second ends, the first end of the left protection plate and the first end of the right protection plate being respectively installed on the two movable plates in an adjustable position, the second end of the left protection plate being slidably arranged in the second end of the right protection plate, and the locking piece being arranged on the right protection plate and being used for locking or releasing the left protection plate. The application solves the problem that the existing foundation pit support cannot adjust the support height and width.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building engineering, and particularly relates to a stable foundation pit support frame. BACKGROUND

[0002] A foundation pit is a soil pit excavated according to the design position of a foundation, the base elevation and the foundation plane size. When the foundation pit is excavated, the surrounding buildings will produce certain settlement and movement, causing the deformation of the buildings and triggering dangers. In order to ensure the safety and normal operation of the nearby buildings, underground pipelines and urban traffic, the foundation pit support construction is generally carried out when the foundation pit is excavated. The ordinary foundation pit support frame uses fixed-length insertion rods or baffle plates for support. The support height and width of the insertion rods or baffle plates are fixed, and the support height and width cannot be adjusted, so the universality is not high. SUMMARY

[0003] The present application aims to provide a stable foundation pit support frame, which solves the problem that the existing foundation pit support cannot adjust the support height and width.

[0004] The present application is achieved by the following technical solutions:

[0005] A stable foundation pit support frame comprises:

[0006] a fixed plate;

[0007] two movable plates, the top ends of the two movable plates being slidably connected to the fixed plate;

[0008] an adjusting device, the adjusting device being connected to the two movable plates and being used to drive the two movable plates to move closer to or farther away from each other;

[0009] a plurality of connecting devices, the connecting devices comprising a left protective plate, a right protective plate and a locking piece, the left protective plate and the right protective plate each having oppositely arranged first and second ends, the first end of the left protective plate and the first end of the right protective plate being respectively installed on the two movable plates in an adjustable position, the second end of the left protective plate being slidably arranged in the second end of the right protective plate, and the locking piece being arranged on the right protective plate and being used to lock or release the left protective plate.

[0010] Further, the bottom end of the fixed plate is provided with a movable slot, the adjusting device comprises a driving assembly and two screw rods, the two screw rods are respectively rotatably arranged on the slot walls at the two ends of the movable slot, the driving assembly is connected to the two screw rods respectively and is used to drive the screw rods to rotate, the top end of each movable plate is provided with a movable block, the two movable blocks are respectively slidably arranged in the movable slot and are respectively threadedly connected to the two screw rods.

[0011] Further, the driving assembly comprises a hand wheel, a rotating shaft, a first gear and two fixed frames, the rotating shaft is rotationally arranged at the top end of the fixed plate, the bottom end of the rotating shaft extends into the movable slot and is connected with the first gear, the hand wheel is arranged at the top end of the rotating shaft, the two fixed frames are respectively arranged at the two sides of the first gear and are fixed in the movable slot, the screw rod passes through the fixed frame close to the screw rod and is connected with a second gear, and the second gear is in meshing transmission with the first gear.

[0012] Further, the top end of the movable block is provided with a guide block, and the groove bottom of the movable slot is provided with a guide groove matched with the guide block.

[0013] Further, the movable plate is provided with an adjusting slot, a plurality of adjusting holes in communication with the adjusting slot are arranged on the side wall of the movable plate, the plurality of adjusting holes are arranged at intervals along the length direction of the movable plate, the first end of the left protection plate and the first end of the right protection plate are provided with adjusting blocks, the adjusting blocks are slidingly arranged in the corresponding adjusting slots, the adjusting blocks are provided with first threaded holes, and the adjusting blocks are threadedly connected with the first threaded holes through the adjusting bolts passing through the adjusting holes, so that the adjusting blocks are detachably fixed on the movable plate.

[0014] Further, the second end of the left protection plate is provided with an adjusting plate, a plurality of positioning holes are arranged on the adjusting plate at intervals along the length direction of the adjusting plate, the second end of the right protection plate is provided with a positioning slot for accommodating the adjusting plate, a second threaded hole in communication with the positioning slot is arranged on the right protection plate, the locking member is a positioning bolt, the positioning bolt is threadedly connected with the second threaded hole, and the left protection plate is locked on the right protection plate through the positioning bolt passing through any positioning hole.

[0015] Further, the bottom ends of the left protection plate and the right protection plate are provided with protection nets.

[0016] Further, the bottom end of the movable plate is provided with a supporting device for fixing the movable plate on the ground.

[0017] Further, the supporting device comprises a bottom plate arranged at the bottom end of the movable plate, a plurality of insertion holes are clamped on the bottom plate, and an insertion rod is arranged in the insertion hole.

[0018] Further, the supporting device further comprises a rotating wheel and a supporting plate, a rotating slot is arranged on one side wall of the movable plate, the rotating wheel is rotationally arranged in the rotating slot, the first end of the supporting plate is connected with the rotating wheel, and the other end is provided with an insertion block.

[0019] Compared with the prior art, the beneficial effects of the present application are that the two movable plates are driven to approach or move away from each other by the adjusting device, the support width is adjusted, the protection range is improved, the mounting position of the adjusting connecting device on the movable plate is adjusted, the support height is adjusted, the problem that the existing foundation pit support cannot adjust the support height and width is solved, the universality of the stable foundation pit support frame of the present application is improved, and the application range is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure diagram of the stable foundation pit support frame of the present application;

[0021] Figure 2 Structure diagram of the stable foundation pit support frame of the present application;

[0022] Figure 3 Structure diagram of the left protection plate in the stable foundation pit support frame of the present application;

[0023] Figure 4 Structure diagram of the right protection plate in the stable foundation pit support frame of the present application;

[0024] Figure 5 Connection diagram of the movable plate, rotating wheel and support plate in the stable foundation pit support frame of the present application.

[0025] In the figure, 1 is the fixed plate, 11 is the movable slot, 12 is the guide slot, 2 is the movable plate, 21 is the movable block, 22 is the guide block, 23 is the adjusting slot, 24 is the adjusting hole, 25 is the rotating slot, 3 is the adjusting device, 31 is the screw rod, 32 is the hand wheel, 33 is the rotating shaft, 34 is the first gear, 35 is the fixed frame, 36 is the second gear, 4 is the connecting device, 41 is the left protection plate, 42 is the right protection plate, 43 is the locking piece, 44 is the adjusting block, 45 is the adjusting bolt, 46 is the adjusting plate, 47 is the positioning hole, 48 is the positioning slot, 49 is the first threaded hole, 5 is the protection net, 6 is the support device, 61 is the bottom plate, 62 is the insertion hole, 63 is the insertion rod, 64 is the rotating wheel, 65 is the support plate, 66 is the insertion block. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0029] It should be noted that, in this document, the terms "first", "second", and the like are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic view of the stable foundation pit support frame of the present application, Figure 2 is a sectional view of the stable foundation pit support frame of the present application. The stable foundation pit support frame comprises a fixed plate, two movable plates, an adjusting device and a plurality of connecting devices. The two movable plates are driven by the adjusting device to approach or move away from each other to adjust the support width. The positions of the plurality of connecting devices installed on the two movable plates are adjusted to adjust the support height.

[0032] Specifically, the top ends of the two movable plates are slidably connected with the fixed plate, and the adjusting device is connected with the two movable plates for driving the two movable plates to move close to or away from each other. In an embodiment, the bottom end of the fixed plate is provided with a movable slot, the adjusting device comprises a driving assembly and two screw rods, the two screw rods are respectively rotatably arranged on the slot walls at the two ends of the movable slot, the driving assembly is connected with the two screw rods respectively for driving the screw rods to rotate, the top end of each movable plate is provided with a movable block, the two movable blocks are respectively slidably arranged in the movable slot and are respectively threadedly connected with the two screw rods. The driving assembly drives the screw rods to rotate in opposite directions, and the movable blocks are located in the movable slot and are threadedly connected with the screw rods, so that the movable blocks and the screw rods form a screw rod transmission, thereby enabling the movable blocks to move linearly along the movable slot under the action of the rotation of the screw rods, so as to drive the two movable plates to move close to or away from each other through the two movable blocks. In an embodiment, the top end of the movable block is provided with a guide block, and the bottom of the movable slot is provided with a guide groove matched with the guide block. The guide block is slidably arranged in the guide groove, and the guide groove and the guide block can limit the rotation of the movable block in the movable slot, so that the movable block moves linearly along the movable slot. Compared with the movable slot for limiting the movement of the movable block, the guide block and the guide groove can reduce the contact area and thus reduce the friction force during movement.

[0033] The driving assembly can be electric or manual. Considering the cost and power supply, the driving assembly of the stable foundation pit support frame adopts a manual mode. In an embodiment, the driving assembly comprises a hand wheel, a rotating shaft, a first gear and two fixed frames. The rotating shaft is rotatably arranged at the top end of the fixed plate, the bottom end of the rotating shaft extends into the movable slot and is connected with the first gear, the hand wheel is arranged at the top end of the rotating shaft, the two fixed frames are respectively located on the two sides of the first gear and are fixed in the movable slot, the screw rod passes through the fixed frame close to it and is connected with a second gear, and the second gear is in meshing transmission with the first gear. By rotating the hand wheel, the hand wheel drives the first gear to rotate through the rotating shaft, and the first gear drives the two screw rods to rotate through the two second gears respectively. The fixed frame can support the screw rod, so that the rotation of the screw rod is more stable.

[0034] The specific number of the connecting devices can be determined according to the construction protection requirements, each of the connecting devices comprises a left protection plate, a right protection plate and a locking member, the left protection plate and the right protection plate each have oppositely arranged first ends and second ends, the first end of the left protection plate and the first end of the right protection plate are respectively installed on the two movable plates in an adjustable manner, the second end of the left protection plate is slidably arranged in the second end of the right protection plate, and the locking member is arranged on the right protection plate and used for locking or loosening the left protection plate. The installation positions of the connecting devices on the two movable plates are adjusted to adjust the support height. In an embodiment, an adjusting groove is formed on the movable plate, a plurality of adjusting holes are formed on the side wall of the movable plate and are arranged at intervals along the length direction of the movable plate, the first end of the left protection plate and the first end of the right protection plate are provided with adjusting blocks, the adjusting blocks are slidably arranged in the corresponding adjusting grooves, the adjusting blocks are provided with first threaded holes, and the adjusting blocks are detachably fixed on the movable plate through the adjusting screws passing through the adjusting holes and being threadedly connected with the first threaded holes. The adjusting blocks can be moved up and down along the adjusting grooves, when the adjusting blocks are moved, the adjusting screws are first detached, then the positions of the left protection plate and the right protection plate on the movable plate are adjusted by adjusting the positions of the adjusting blocks in the adjusting grooves, after the left protection plate and the right protection plate are moved to the corresponding height positions by the adjusting blocks, the first threaded holes on the adjusting blocks correspond to certain adjusting holes, at this time, the adjusting blocks can be fixed in the adjusting grooves by the adjusting screws passing through the corresponding adjusting holes and being threadedly connected with the first threaded holes on the adjusting blocks, so that the positions of the left protection plate and the right protection plate on the movable plate are fixed.

[0035] Please refer to Figure 3 and Figure 4 , Figure 3 Figure 1 is a structural schematic view of a left protection plate in a stable foundation pit support frame according to the present application, Figure 4The structure diagram of the right protection plate in the stable foundation pit support frame of the present application is shown. The sliding connection between the left protection plate and the right protection plate makes the connection length between the left protection plate and the right protection plate adjustable according to the distance between the two movable plates. In an embodiment, the second end of the left protection plate is provided with an adjusting plate, a plurality of positioning holes are formed in the adjusting plate and are arranged at intervals along the length direction of the adjusting plate, the second end of the right protection plate is provided with a positioning groove for accommodating the adjusting plate, a second threaded hole is formed in the right protection plate and communicates with the positioning groove, the locking member is a positioning bolt, the positioning bolt is threadedly connected with the second threaded hole, and the left protection plate is locked on the right protection plate by the positioning bolt passing through a certain positioning hole. By slidingly arranging the adjusting plate in the positioning groove, the length of the adjusting plate extending out of the positioning groove is the distance between the left protection plate and the right protection plate. When the adjusting plate is moved, the second threaded hole on the right protection plate corresponds to a certain positioning hole on the adjusting plate, and then the positioning bolt is threadedly connected with the second threaded hole. By rotating the positioning bolt, the positioning bolt is inserted into the positioning hole corresponding to the second threaded hole, so as to fix the position of the adjusting plate in the positioning groove, and the left protection plate and the right protection plate are fixed.

[0036] In order to enhance the protection area of the connecting device, in an embodiment, the bottom end of the left protection plate and the right protection plate is provided with a protection net. The protection net expands the protection area of the left protection plate and the right protection plate, so as to enhance the protection area of the connecting device.

[0037] Please refer to Figure 5 , Figure 5 The connection diagram of the movable plate, the rotating wheel and the support plate in the stable foundation pit support frame of the present application is shown. In order to make the movable plate more stably fixed on the ground, in an embodiment, the bottom end of the movable plate is provided with a support device for fixing the movable plate on the ground. In an embodiment, the support device comprises a bottom plate arranged at the bottom end of the movable plate, a plurality of insertion holes are clamped on the bottom plate, and an insertion rod is arranged in the insertion hole. When the bottom plate needs to be fixed, the insertion rod is inserted into the ground along the corresponding insertion hole. The end portion of the insertion rod is larger than the rod body of the insertion rod. When the insertion rod is inserted into the ground, the end portion of the insertion rod abuts against the bottom plate, so as to fix the bottom plate on the ground, thereby fixing the movable plate on the ground. In an embodiment, the support device further comprises a rotating wheel and a support plate. A rotating groove is arranged on one side wall of the movable plate, the rotating wheel is rotatably arranged in the rotating groove, the first end of the support plate is connected with the rotating wheel, and the other end is provided with an insertion block. The support plate is driven to rotate by the rotating wheel, the insertion block is inserted into the ground by the support plate, so as to make the support plate, the movable plate and the ground form a triangle, thereby improving the stability of the support. The rotating groove is preferably arranged at the rear end of the movable plate, and the insertion block is inserted into the edge of the foundation pit by the support plate.

[0038] The use process of the stable foundation pit support frame of the present application is briefly described as follows:

[0039] According to the width of the support required, the positioning bolt is screwed out of the positioning hole, the right guard plate is disconnected from the adjusting plate, the hand wheel is rotated, the first gear is rotated through the rotating shaft, the two second gears engaged with the first gear are rotated, the two screw rods are rotated through the two second gears, the movable block is moved along the movable groove under the rotating action of the screw rod due to the threaded connection between the screw rod and the movable block and the restriction of the guide groove on the guide block, the movable plate is moved through the movable block, the distance between the two movable plates is adjusted, in this process, the left guard plate and the right guard plate move with the two movable plates, the left guard plate drives the adjusting plate to slide along the positioning groove, the distance between the left guard plate and the right guard plate is adjusted, and then the positioning bolt is screwed into the corresponding positioning hole to lock the adjusting plate on the right guard plate, so that the left guard plate and the right guard plate are fixed, and the support width is adjusted.

[0040] Then, according to the height of the support required, the adjusting screw on the adjusting hole is loosened, the adjusting block is moved along the adjusting groove, the left guard plate and the right guard plate are moved up and down along the movable plate through the corresponding adjusting block, the left guard plate and the right guard plate are moved to the set height, the adjusting screw is screwed through the corresponding adjusting hole and is screwed into the first threaded hole on the adjusting block, the position of the adjusting block is fixed, the support height is adjusted, and the protective net is installed on the left guard plate and the right guard plate.

[0041] Finally, the insertion rod is inserted into the ground along the insertion hole by stepping on the insertion rod, the position of the bottom plate is fixed, the support plate is rotated by rotating the rotating wheel, the insertion block is inserted into the ground by the support plate, so that the support plate, the movable plate and the ground form a triangle, and the stability of the support is improved.

[0042] Compared with the prior art, the beneficial effects of the present application are that the two movable plates are driven to move close to each other or away from each other by the adjusting device, the support width is adjusted, the protection range is improved, the installation position of the connecting device on the movable plate is adjusted, the support height is adjusted, the problem that the existing foundation pit support cannot adjust the support height and width is solved, the universality of the stable foundation pit support frame is improved, and the application range is expanded.

[0043] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, so any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the present application.

Claims

1. A stable type foundation pit support frame, characterized by, The utility model provides a kind of adjustable display stand, including: Fixed plate; Two movable plates, the top end of two movable plates is slidably connected with fixed plate; Adjusting device, the adjusting device is connected with two movable plates, for driving two movable plates to be close to each other or away from each other; Several connecting devices, the connecting device includes left guard plate, right guard plate and locking piece, the first end and the second end of left guard plate and right guard plate are oppositely arranged, the first end of left guard plate and the first end of right guard plate are respectively installed on two movable plates in adjustable position, the second end of left guard plate is slidably arranged in the second end of right guard plate, the locking piece is arranged on right guard plate, for locking or loosening left guard plate; Adjusting slot is opened on the movable plate, a plurality of adjusting holes are opened on the side wall of movable plate and are communicated with adjusting slot, a plurality of adjusting holes are interval arranged along the length direction of movable plate, the first end of left guard plate and the first end of right guard plate are equipped with adjusting block, adjusting block is slidably arranged in corresponding adjusting slot, first threaded hole is equipped on adjusting block, adjusting bolt is threadedly connected with first threaded hole after passing through adjusting hole, to detachably fix adjusting block on movable plate; The bottom end of movable plate is equipped with support device for fixing movable plate on ground, the support device includes bottom plate arranged at the bottom end of movable plate, a plurality of insertion holes are clamped on the bottom plate, insertion rod is arranged in insertion hole, the support device further includes rotating wheel and support plate, rotating groove is arranged on one side wall of movable plate, rotating wheel is rotatably arranged in rotating groove, the first end of support plate is connected with rotating wheel, and the other end is equipped with insertion block; The bottom end of fixed plate is equipped with movable slot, the adjusting device includes driving assembly and two screw rods, two screw rods are rotatably arranged on the groove wall at the two ends of movable slot respectively, the driving assembly is connected with two screw rods respectively, for driving screw rod rotation, the top end of movable plate is equipped with movable block, two movable blocks are slidably arranged in movable slot respectively, and are threadedly connected with two screw rods respectively; The driving assembly includes hand wheel, rotating shaft, first gear and two fixed frames, the rotating shaft is rotatably arranged at the top end of fixed plate, the bottom end of rotating shaft extends into movable slot and is connected with first gear, the hand wheel is arranged at the top end of rotating shaft, two fixed frames are respectively located on the two sides of first gear and are fixed in movable slot, the screw rod is connected with second gear after passing through the fixed frame close to it, and the second gear is meshed with first gear.

2. The stable excavation support frame of claim 1, wherein, The top end of movable block is equipped with guide block, and the groove bottom of movable slot is equipped with guide groove matched with guide block.

3. The stable excavation support frame of claim 1, wherein, The second end of left guard plate is equipped with adjusting plate, a plurality of positioning holes are opened on the adjusting plate and are interval arranged along the length direction of adjusting plate, the second end of right guard plate is equipped with positioning slot for accommodating adjusting plate, second threaded hole is opened on right guard plate and is communicated with positioning slot, the locking piece is positioning bolt, the positioning bolt is threadedly connected with second threaded hole, and left guard plate is locked on right guard plate by the positioning bolt passing through any positioning hole.

4. The stable excavation bracing frame of claim 1, wherein, The bottom end of the left and right protective plates is provided with a protective net.

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