Rapid supporting structure for foundation pit earthwork

Abstract

The invention belongs to the technical field of foundation pit supporting structures, and discloses a foundation pit earthwork rapid supporting structure which comprises a supporting plate, a rotating assembly is movably connected to the interior of the supporting plate, a hydraulic rod is fixedly connected to the top of an inner cavity of the supporting plate, and a limiting block is fixedly connected to the bottom end of the hydraulic rod. A first arc-shaped plate and a second arc-shaped plate are annularly arranged at the bottom of the supporting plate at equal 90 degrees; through cooperation of a rotating assembly, a limiting block, a first arc-shaped plate, a second arc-shaped plate and other structures, the circular foundation pit can be rapidly and conveniently supported, after a rotating disc rotates, the first arc-shaped plate and the second arc-shaped plate can be driven to linearly move towards the inner wall of the foundation pit under the circumferential limiting effect of a limiting groove, and the foundation pit can be conveniently supported. And after the first arc-shaped plate and the second arc-shaped plate are completely unfolded, a cylinder attached to the inner wall of the foundation pit can be formed, and therefore the effects that the device is rapidly and conveniently unfolded, and effective supporting is provided for the circular foundation pit are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit supporting structures, in particular to a foundation pit earthwork rapid supporting structure. Background Art

[0002] A foundation pit refers to a deep pit dug for the purpose of foundation construction in civil engineering and building construction. Foundation pits are usually used to build large buildings, underground facilities (such as underground garages, subway stations, etc.) and other projects that require earthwork.

[0003] For example, the utility model with the publication number CN212427111U discloses a truss-type foundation pit support structure for construction, which relates to the field of foundation pit support structure, including foundation pit support plates, which are in the shape of a quarter cylinder, and are provided with a plurality of groups. After the plurality of groups of foundation pit support plates are spliced ​​into a cylindrical structure, they are spliced ​​up and down, and an interlocking spiral structure is fixedly welded at the outer circle of the foundation pit support plates. The foundation pit support plates in the utility model can be spliced ​​with each other, and are spliced ​​downward one level at a time when the foundation pit is constructed, so as to avoid collapse during the construction of the foundation pit, and the utility model has strong practicality; the upper part of the foundation pit support plates in the utility model is tightened and fixed by tension rods and tension plates, so as to achieve the purpose of stably supporting the foundation pit support plates on the inner wall of the foundation pit, and replaces the method of fixing from the bottom end inside the foundation pit, and does not affect the construction inside the foundation pit; the outer part of the foundation pit support plates in the utility model is provided with an interlocking spiral structure, which can be well interlocked and fixed with the inner wall of the foundation pit, and the overall structure is stable;

[0004] When the above-mentioned device is in use, several groups of foundation pit support plates are spliced ​​together to form a cylinder, thereby supporting the cylindrical foundation pit. However, when the above-mentioned device is in use, the splicing process is very cumbersome, and therefore, it requires a large amount of manpower and time costs. In construction projects, foundation pit support is usually a key prerequisite for foundation construction. Its progress delay will have a chain reaction on a series of subsequent processes such as foundation construction and main structure construction, resulting in a delay in the delivery time of the entire project. Therefore, a foundation pit earthwork rapid support structure is proposed to solve the problems raised in the background technology. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a rapid foundation pit earthwork support structure, which has the advantages of conveniently and quickly supporting a circular foundation pit, thereby improving the progress of the project.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a foundation pit earthwork rapid support structure, comprising a support plate, wherein the support plate is movably connected with a rotating assembly inside, the top of the inner cavity of the support plate is fixedly connected with a hydraulic rod, the bottom end of the hydraulic rod is fixedly connected with a limited block, the bottom of the support plate is respectively provided with a first arc plate and a second arc plate in an annular manner of 90 degrees, the bottom of the first arc plate is movably connected with a bottom plate, the top of the bottom plate is annularly hinged with four connecting rods, the first arc plate is provided with a fixing assembly inside, and the top of the support plate is threadedly connected with a threaded rod;

[0007] In fact, the rotating assembly includes a rotating disk, the surface of which is respectively provided with four first arc grooves and a second arc groove in an annular manner, and the outer wall of the rotating disk is provided with a third arc groove;

[0008] The fixing assembly includes a sliding block, both sides of the sliding block are fixedly connected with tooth blocks, the inner wall of the first arc plate is symmetrically provided with two tooth plates, and the interior of the first arc plate is movably connected with a limit plate.

[0009] Preferably, two oblique grooves are symmetrically provided on the surface of the limit plate, and the two oblique grooves are oriented in opposite directions. A round rod is fixedly connected to the top end of the tooth plate, and the round rod is movably clamped in the interior of the limit plate.

[0010] Preferably, the inner wall of the first arc plate is provided with a first sliding groove for limiting the tooth plate in the horizontal direction, the limiting plate is L-shaped, and the top end of the limiting plate passes through the outer wall of the first arc plate and extends to the outside of the first arc plate.

[0011] Preferably, a square groove matching with the limiting plate is formed on the inner wall of the supporting plate, a spring sheet is fixedly connected to the bottom of the limiting plate, and the limiting plate is elastically connected to the first arc-shaped plate via the spring sheet.

[0012] Preferably, the top end of the connecting rod is hinged to one end of the sliding block, and the inner wall of the first arc-shaped plate is provided with a notch for limiting the sliding block in the vertical direction.

[0013] Preferably, the surface of the bottom plate is respectively provided with limiting grooves matching with the first arc plate and the second arc plate, and the top ends of the first arc plate and the second arc plate are both provided with connecting columns.

[0014] Preferably, the connecting column at the top end of the first arc plate is movably clamped in the first arc groove, and the connecting column at the top end of the second arc plate is movably clamped in the second arc groove, and the first arc plate is in a convex shape.

[0015] Preferably, a convex rod is provided on one side of the limit block, the convex rod on the limit block is movably engaged in the inside of the third arc groove, and the inner wall of the support plate is provided with a second sliding groove for limiting the third arc groove.

[0016] Preferably, when the limit block moves downward, it can drive the convex rod to slide along the track of the third arc groove and make the turntable rotate counterclockwise. The first arc plate and the second arc plate are staggered and form a cylinder when the first arc plate and the second arc plate are unfolded.

[0017] Preferably, thread grooves are provided at four corners of the top of the support plate, and the threaded rod abuts against the top of the limiting plate after moving downward.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention supports the circular foundation pit quickly and conveniently through the cooperation between the rotating assembly, the limit block, the first arc plate and the second arc plate, thereby improving the progress of the project. The limit block is moved downward so as to slide along the trajectory of the third arc groove, thereby driving the turntable to rotate counterclockwise. The connecting columns on the first arc plate and the second arc plate are respectively movably connected to the inside of the first arc groove and the second arc groove, so that after the turntable rotates, it can drive the first arc plate and the second arc plate to move in a straight line toward the inner wall of the foundation pit under the action of the circumferential limitation of the limit groove. When the first arc plate and the second arc plate are fully unfolded, a cylinder that fits the inner wall of the foundation pit will be formed, thereby achieving the effect of quickly and conveniently unfolding the device and providing effective support for the circular foundation pit.

[0020] The present invention improves the supporting effect of the device on the circular foundation pit and the stability of the support through the cooperation between structures such as the connecting rod, the fixing assembly and the threaded rod. The connecting rod is hinged with the slider, so that after the first arc plate moves, the connecting rod is driven to rotate with its bottom end as the axis, and the slider is driven to move downward. After the connecting rod rotates, a triangle shape is formed between the first arc plate and the bottom plate, thereby improving the overall stability of the device. After the threaded rod moves downward, it can squeeze the limit plate to move downward, thereby causing the round rod to slide along the trajectory of the inclined groove, and the two inclined grooves are in opposite directions, so that the two tooth plates are driven by the round rod to move in a straight line toward each other, so that they are stuck in the interior of the tooth block, and then the position of the slider after moving downward is fixed, thereby fixing the position of the connecting rod, thereby improving the supporting effect and stability of the device on the circular foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the front cross-section structure of the present invention;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 It is a schematic diagram of the positional relationship among the rotating assembly, the limit block, the first arc plate and the second arc plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the first curved plate and the second curved plate of the present invention after being unfolded;

[0026] Figure 6 It is a schematic diagram of the side section structure of the fixing assembly of the present invention;

[0027] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0028] Figure 8 It is an exploded view of the fixing component of the present invention.

[0029] In the figure: 1, support plate; 2, rotating assembly; 21, turntable; 22, first arc groove; 23, second arc groove; 24, third arc groove; 3, hydraulic rod; 4, limit block; 5, first arc plate; 6, second arc plate; 7, connecting rod; 8, fixed assembly; 81, slider; 82, tooth block; 83, tooth plate; 84, round rod; 85, limit plate; 86, inclined groove; 87, spring piece; 9, bottom plate; 10, threaded rod; 11, threaded groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 8 As shown, the present invention provides a foundation pit earthwork rapid support structure, including a support plate 1, a rotating assembly 2 is movably connected inside the support plate 1, a hydraulic rod 3 is fixedly connected to the top of the inner cavity of the support plate 1, and a limited position block 4 is fixedly connected to the bottom end of the hydraulic rod 3, and a first arc plate 5 and a second arc plate 6 are respectively arranged at the bottom of the support plate 1 in an annular manner at ninety degrees, the bottom of the first arc plate 5 is movably connected to a bottom plate 9, and four connecting rods 7 are annularly hinged on the top of the bottom plate 9, a fixing assembly 8 is arranged inside the first arc plate 5, and a threaded rod 10 is threadedly connected to the top of the support plate 1;

[0032] In fact, the rotating assembly 2 includes a rotating disk 21, and the surface of the rotating disk 21 is respectively provided with four first arc grooves 22 and second arc grooves 23 in an annular manner, and the outer wall of the rotating disk 21 is provided with a third arc groove 24;

[0033] The fixing assembly 8 includes a slider 81 , and tooth blocks 82 are fixedly connected to both sides of the slider 81 . Two tooth plates 83 are symmetrically arranged on the inner wall of the first arc plate 5 , and a limit plate 85 is movably connected inside the first arc plate 5 .

[0034] The above scheme is adopted: by moving the limit block 4 downward, it slides along the trajectory of the third arc groove 24, thereby driving the turntable 21 to rotate counterclockwise, and the connecting columns on the first arc plate 5 and the second arc plate 6 are respectively movably connected to the inside of the first arc groove 22 and the second arc groove 23, so that after the turntable 21 rotates, it can drive the first arc plate 5 and the second arc plate 6 to move in a straight line toward the inner wall of the foundation pit under the action of the circumferential limitation of the limit groove. When the first arc plate 5 and the second arc plate 6 are fully unfolded, a cylinder that fits the inner wall of the foundation pit will be formed, thereby achieving the purpose of quickly and conveniently unfolding the device and providing effective support for the circular foundation pit.

[0035] like Figure 2 and Figure 3 , Figures 6 to 8 As shown, the surface of the limit plate 85 is symmetrically provided with two inclined grooves 86, and the two inclined grooves 86 are oriented in opposite directions. The top end of the tooth plate 83 is fixedly connected with a round rod 84, and the round rod 84 is movably clamped in the inside of the limit plate 85. The inner wall of the first arc plate 5 is provided with a first sliding groove for limiting the tooth plate 83 in the horizontal direction. The limit plate 85 is L-shaped, and the top end of the limit plate 85 passes through the outer wall of the first arc plate 5 and extends to the outside of the first arc plate 5.

[0036] The above scheme is adopted: the connecting rod 7 is hinged with the slider 81, so that after the first curved plate 5 moves, the connecting rod 7 is driven to rotate with its bottom end as the axis, and the slider 81 is driven to move downward. After the connecting rod 7 rotates, a triangle shape is formed between the first curved plate 5 and the bottom plate 9, thereby improving the overall stability of the device. After the threaded rod 10 moves downward, it can squeeze the limit plate 85 to move downward, thereby making the round rod 84 slide along the trajectory of the inclined groove 86, and the two inclined grooves 86 are in opposite directions, so that the two tooth plates 83 are driven by the round rod 84 to move in a straight line toward each other, thereby getting stuck in the inside of the tooth block 82, and then fixing the position of the slider 81 after moving downward, thereby fixing the position of the connecting rod 7, thereby improving the support effect and stability of the device on the circular foundation pit.

[0037] like Figure 2 and Figure 3 As shown, the inner wall of the support plate 1 is provided with a square groove that cooperates with the limit plate 85, and the bottom of the limit plate 85 is fixedly connected with a spring plate 87. The limit plate 85 is elastically connected to the first arc plate 5 through the spring plate 87. The top end of the connecting rod 7 is hinged to one end of the slider 81, and the inner wall of the first arc plate 5 is provided with a notch for limiting the slider 81 in the vertical direction.

[0038] The above scheme is adopted: through the design of the spring piece 87, its function is that when the device needs to be taken out from the inside of the circular foundation pit, at this time, the operator rotates the threaded rod 10 in the opposite direction, thereby driving the threaded rod 10 to move upward through the threaded connection between the threaded rod 10 and the support plate 1, and then the threaded rod 10 releases the squeezing of the top of the four limit plates 85. When the abutment against the limit plates 85 is released, the limit plates 85 will be reset under the action of the elastic force of the spring piece 87, and then the round rod 84 will move along the trajectory of the inclined groove 86, driving the tooth plate 83 to move away from the slider 81, so that the slider 81 and the tooth block 82 are released, and then the fixation of the connecting rod 7 is released, thereby facilitating the subsequent reset of the first arc plate 5 and the second arc plate 6.

[0039] like Figure 4 and Figure 5 As shown, the surface of the bottom plate 9 is respectively provided with limiting grooves matching with the first arc plate 5 and the second arc plate 6, and the top ends of the first arc plate 5 and the second arc plate 6 are both provided with connecting columns, the connecting column at the top end of the first arc plate 5 is movably clamped in the inside of the first arc groove 22, and the connecting column at the top end of the second arc plate 6 is movably clamped in the inside of the second arc groove 23, the first arc plate 5 is in a convex shape, and a convex rod is provided on one side of the limiting block 4.

[0040] The above scheme is adopted: the first curved plate 5 is in the shape of a convex character, and its function is that when the first curved plate 5 and the second curved plate 6 are fully unfolded, the second curved plate 6 will be stuck into the notch of the convex character of the first curved plate 5, thereby making the outer walls of the first curved plate 5 and the second curved plate 6 fit together. The specific unfolding diagram is shown in the example Figure 5 shown.

[0041] like Figure 1 , Figure 4 and Figure 5 As shown, the convex rod on the limit block 4 is movably engaged with the inside of the third arc groove 24, and the inner wall of the support plate 1 is provided with a second sliding groove for limiting the third arc groove 24. When the limit block 4 moves downward, it can drive the convex rod to slide along the trajectory of the third arc groove 24 and make the turntable 21 rotate counterclockwise. The first arc plate 5 and the second arc plate 6 are alternately distributed. When the first arc plate 5 and the second arc plate 6 are unfolded, a cylinder is formed. The four corners of the top of the support plate 1 are provided with threaded grooves 11. After the threaded rod 10 moves downward, it abuts against the top of the limit plate 85.

[0042] The above scheme is adopted: by opening the threaded groove 11, its function is that in the foundation pit project, the support plate 1 may be affected by various complex external forces. For example, the lateral earth pressure from the side wall of the foundation pit will produce horizontal thrust, the buoyancy of groundwater may produce upward lifting force, and horizontal and vertical inertial forces will be generated under the action of earthquakes, etc. By opening the threaded groove 11, the foundation pit and the support plate 1 are fastened together by the bolt assembly, so that the support plate 1 is firmly fixed to the top of the foundation pit, and then these external forces are effectively transmitted to the stable structural part of the foundation pit, thereby ensuring the overall stability of the support system.

[0043] The working principle and use process of the present invention are as follows: the operator places the entire device into the circular foundation pit through a crane or other external force, and then fixes the top of the support plate 1 on the surface of the circular foundation pit through the cooperation between the bolt assembly and the threaded groove 11, and starts the hydraulic rod 3, so that the hydraulic rod 3 drives the limit block 4 to move downward. When the limit block 4 moves downward, the protrusion on it slides along the trajectory of the third arc groove 24. Since the limit block 4 is vertically limited by the second slide groove, the limit block 4 cooperates with the third arc groove 24 to drive the turntable 21 to rotate counterclockwise. When the turntable 21 rotates, it drives the connecting column on the first arc plate 5 along the first arc groove 22 The first curved plate 5 and the second curved plate 6 slide along the trajectory of the second arc groove 23, and the first curved plate 5 and the second curved plate 6 slide. Since the bottoms of the first curved plate 5 and the second curved plate 6 are circumferentially limited by the limiting grooves on the bottom plate 9, the first curved plate 5 and the second curved plate 6 can only move horizontally and linearly along the trajectories of the first arc groove 22 and the second arc groove 23, respectively, in the direction away from the connecting rod 7. When the bottom ends of the first curved plate 5 and the second curved plate 6 abut against the inner wall of the limiting groove of the bottom plate 9, the first curved plate 5 and the second curved plate 6 are fully unfolded and form a cylinder. At the same time, the outer walls of the first curved plate 5 and the second curved plate 6 abut against the circular foundation pit, thereby effectively supporting the circular foundation pit.

[0044] When the first curved plate 5 moves, it drives the fixed component 8 inside it to move together. At the same time, the top end of the connecting rod 7 is hinged with the slider 81, thereby driving the connecting rod 7 to rotate with the bottom end of the supporting plate 1 as the axis. After the connecting rod 7 rotates, it drives the slider 81 to slide downward inside the notch of the first curved plate 5. When the first curved plate 5 and the second curved plate 6 are abutted, the first curved plate 5 drives the protruding part of the top end of the limiting plate 85 to be located directly below the threaded rod 10. Subsequently, the operator rotates the threaded rod 10, thereby driving the threaded rod 10 to move downward through the threaded connection between the threaded rod 10 and the supporting plate 1. After the threaded rod 10 moves downward, it abuts against the top of the limiting plate 85, so that the limiting plate 85 moves downward in a straight line under the action of the square groove. When the limit plate 85 moves downward, it drives the two round rods 84 to slide along the trajectories of the two inclined grooves 86 respectively. Since the two inclined grooves 86 are in opposite directions, the round rod 84 can only drive the two tooth plates 83 to move linearly towards each other under the action of the first slide groove on the horizontal limitation of the tooth plate 83. After the tooth plate 83 moves, it engages with the tooth block 82, thereby fixing the position of the slider 81, so that the position of the connecting rod 7 is fixed by fixing the slider 81, so that a stable triangular angle is formed between the connecting rod 7, the first curved plate 5 and the bottom plate 9. When subjected to external soil pressure, groundwater pressure or other external forces, this triangular structure can effectively resist deformation and prevent the first curved plate 5 from being displaced, thereby improving the overall support effect and stability of the device.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation pit earthwork rapid support structure, comprising a support plate (1), characterized in that: The support plate (1) is movably connected to a rotating assembly (2) inside, the top of the inner cavity of the support plate (1) is fixedly connected to a hydraulic rod (3), the bottom end of the hydraulic rod (3) is fixedly connected to a limit block (4), the bottom of the support plate (1) is respectively provided with a first arc plate (5) and a second arc plate (6) in an annular manner at ninety degrees, the bottom of the first arc plate (5) is movably connected to a bottom plate (9), the top of the bottom plate (9) is annularly hinged with four connecting rods (7), the interior of the first arc plate (5) is provided with a fixing assembly (8), and the top of the support plate (1) is threadedly connected to a threaded rod (10); In fact, the rotating assembly (2) comprises a rotating disk (21), the surface of the rotating disk (21) is respectively provided with four first arc grooves (22) and second arc grooves (23) in an annular shape, and the outer wall of the rotating disk (21) is provided with a third arc groove (24); The fixing assembly (8) comprises a slider (81), both sides of the slider (81) are fixedly connected with tooth blocks (82), the inner wall of the first arc plate (5) is symmetrically provided with two tooth plates (83), and the first arc plate (5) is internally movably connected with a limit plate (85).

2. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The surface of the limiting plate (85) is symmetrically provided with two oblique grooves (86), and the two oblique grooves (86) are oriented in opposite directions. The top end of the tooth plate (83) is fixedly connected with a round rod (84), and the round rod (84) is movably clamped inside the limiting plate (85).

3. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The inner wall of the first arc-shaped plate (5) is provided with a first sliding groove for limiting the tooth plate (83) in the horizontal direction; the limiting plate (85) is L-shaped; the top end of the limiting plate (85) passes through the outer wall of the first arc-shaped plate (5) and extends to the outside of the first arc-shaped plate (5).

4. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The inner wall of the support plate (1) is provided with a square groove matched with the limiting plate (85); the bottom of the limiting plate (85) is fixedly connected with a spring sheet (87); and the limiting plate (85) is elastically connected to the first arc-shaped plate (5) via the spring sheet (87).

5. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The top end of the connecting rod (7) is hinged to one end of the sliding block (81), and the inner wall of the first arc-shaped plate (5) is provided with a notch for limiting the position of the sliding block (81) in the vertical direction.

6. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The surface of the bottom plate (9) is respectively provided with limiting grooves matching with the first arc plate (5) and the second arc plate (6), and the top ends of the first arc plate (5) and the second arc plate (6) are both provided with connecting columns.

7. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: The connecting column at the top end of the first arc plate (5) is movably clamped in the first arc groove (22), and the connecting column at the top end of the second arc plate (6) is movably clamped in the second arc groove (23), and the first arc plate (5) is in a convex shape.

8. The rapid foundation pit earthwork support structure according to claim 1 is characterized in that: A protruding rod is provided on one side of the limit block (4), and the protruding rod on the limit block (4) is movably engaged in the interior of the third arc groove (24). The inner wall of the support plate (1) is provided with a second sliding groove for limiting the third arc groove (24).

9. The rapid foundation pit earthwork support structure according to claim 1, characterized in that: When the limit block (4) moves downward, it can drive the convex rod to slide along the track of the third arc groove (24) and cause the turntable (21) to rotate counterclockwise. The first arc plate (5) and the second arc plate (6) are arranged alternately. When the first arc plate (5) and the second arc plate (6) are unfolded, they form a cylinder.

10. The rapid foundation pit earthwork support structure according to claim 1, characterized in that: The four corners of the top of the support plate (1) are each provided with a threaded groove (11), and the threaded rod (10) abuts against the top of the limiting plate (85) after moving downward.

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