An inner support changing device for super-deep multi-layer basement construction

Abstract

The present application relates to the technical field of foundation pit or trench supporting structure, disclose a kind of for ultra-deep multilayer basement construction inner support change support device, including, bearing mechanism, including base, rotating assembly being arranged at the top of the base.The rotatable base of the present application cooperates with the articulated jacking assembly of adjusting mechanism, forms three-dimensional space self-adapting support network, so that single support point can dynamically cover larger supporting surface, and the composite articulated structure of support inclined pole and cross plate realizes the multidirectional transmission of support force, so that local load can be quickly dispersed by support mechanism, gradient damping system of buffer roof and damper spring can intelligently adapt to the uneven deformation of enclosure structure, avoid stress concentration, and the linkage design of rotating shaft and top block allows the support device to continuously adjust position in non-unloading state, greatly reduces the change support downtime, both ensures the uniform stress of supporting surface, and realizes the continuous operation of construction process.

Description

Technical Field

[0001] This invention relates to the technical field of support structures for foundation pits or trenches, and more particularly to an internal support replacement device for the construction of ultra-deep multi-story basements. Background Technology

[0002] The internal support replacement device in the construction of ultra-deep multi-story basements is a temporary support structure used for the conversion of foundation pit support systems. By installing lower supports before removing upper supports, the load is transferred layer by layer, ensuring the stability of the foundation pit during excavation and structural construction. This device typically uses steel or composite components and is adjustable and reusable, suitable for the conversion of multi-story internal support systems such as diaphragm walls and pile foundations.

[0003] Currently, internal support replacement devices mainly adopt a single-point support form, which has significant limitations in actual construction. Due to the different deformation degrees of various parts of the retaining structure, a single support point cannot evenly cover the entire support surface, easily causing local stress concentration, which in turn leads to uneven stress or even instability of the retaining structure. Especially in the case of multi-layer support replacement in deep foundation pits, this single-point support method not only affects the support effect, but also requires frequent adjustments to the support point position during construction, significantly reducing construction efficiency. Each support replacement requires work stoppage and repositioning, which not only prolongs the construction period but also increases the risk of foundation pit exposure. Summary of the Invention

[0004] In view of the problems existing in the internal support replacement device for the construction of ultra-deep multi-story basements, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an internal support replacement device for the construction of ultra-deep multi-story basements. Its purpose is to achieve intelligent dynamic adjustment of deep foundation pit support through a multi-degree-of-freedom adjustment structure and an adaptive buffer system, effectively solving the problems of uneven stress and low construction efficiency of traditional single-point support.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including, The support mechanism includes a base, a rotating component disposed on top of the base, and a drive component disposed on top of the rotating component; The adjustment mechanism includes a support plate, a lifting assembly disposed on the top of the support plate, a support diagonal rod hinged to the top of the lifting assembly, and a horizontal plate hinged to the top of the support diagonal rod. The adjustment mechanism also includes a pivot hinged to the outside of the horizontal plate, a top block fixedly installed on the outside of the pivot, and a buffer plate fixedly installed on the top of the top block; And a support mechanism used in conjunction with the adjustment mechanism.

[0007] As a preferred embodiment of the internal support replacement device for ultra-deep multi-story basement construction described in this invention, the driving assembly includes a linear guide rail fixedly installed on the top of the base, a driving sleeve movably sleeved on the top of the linear guide rail, and a connecting plate fixedly installed on the top of the driving sleeve.

[0008] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the lifting assembly includes a fixed seat fixedly installed on the top of the support plate, an adjusting bracket hinged to the top of the fixed seat, and a limiting rod movably sleeved on the rotating part of the adjusting bracket.

[0009] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the lifting assembly further includes a top plate fixedly installed on the top of the adjusting bracket and a support plate fixedly installed on the outside of the top plate.

[0010] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the support mechanism includes a support shell fixedly installed on the outside of the horizontal plate, a limiting component disposed in the inner cavity of the support shell, an adjustment channel opened on the outside of the support shell, a movable plate movably locked in the inner cavity of the support shell, and a damping spring fixedly installed on the top of the movable plate.

[0011] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the support mechanism further includes a connecting pad fixedly installed on the top of the damping spring, a protrusion fixedly installed on the top of the connecting pad, and a vibration damping plate fixedly installed on the top of the protrusion.

[0012] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the limiting component includes a return spring fixedly installed in the inner cavity of the support housing, and a limiting plate fixedly installed on the top of the return spring.

[0013] As a preferred embodiment of the internal support replacement device for the construction of ultra-deep multi-story basements according to the present invention, the limiting component further includes a limiting strip fixedly installed on the outside of the limiting plate, and a limiting slider fixedly installed on the outside of the limiting strip, wherein the limiting slider is movably engaged in the inner cavity of the adjusting channel.

[0014] As a preferred embodiment of the internal support replacement device for ultra-deep multi-story basement construction described in this invention, the rotating component includes a base plate fixedly installed on the top of the base, an annular support seat fixedly installed on the top of the base plate, and a servo motor fixedly installed in the inner cavity of the annular support seat.

[0015] As a preferred embodiment of the internal support replacement device for ultra-deep multi-story basement construction described in this invention, the rotating assembly further includes a turntable fixedly installed at the top output end of the servo motor, and a support shaft plate fixedly installed at the top of the turntable, wherein the top of the support shaft plate is fixedly connected to the bottom of the drive sleeve.

[0016] The beneficial effects of this invention are as follows: By combining the rotatable base of the bearing mechanism with the hinged lifting component of the adjustment mechanism, a three-dimensional adaptive support network is formed, enabling a single support point to dynamically cover a larger support surface. The composite hinged structure of the support diagonal rod and the horizontal plate realizes the multi-directional transmission of support force, allowing local loads to be quickly dispersed through the support mechanism. The gradient damping system composed of the buffer top plate and the damping spring can intelligently adapt to the uneven deformation of the retaining structure and avoid stress concentration. The linkage design of the rotating shaft and the top block allows the support device to be continuously adjusted in position without unloading, greatly reducing the downtime for support replacement. This ensures both uniform stress on the support surface and continuous operation during construction, fundamentally improving the safety and efficiency of multi-layer support replacement in deep foundation pits. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0019] Figure 3 This is a schematic plan view of the overall structure of the present invention.

[0020] Figure 4 This is a partial cross-sectional view of the support mechanism structure of the present invention.

[0021] Figure 5 This is a cross-sectional plan view of the support mechanism structure of the present invention.

[0022] In the picture: 100. Load-bearing mechanism; 110. Base; 120. Rotating assembly; 121. Base plate; 122. Annular support seat; 123. Servo motor; 124. Turntable; 125. Support shaft plate; 130. Drive assembly; 131. Linear guide rail; 132. Drive sleeve; 133. Connecting plate; 200. Adjustment mechanism; 210. Support plate; 220. Lifting assembly; 221. Fixed seat; 222. Adjustment bracket; 223. Limiting rod; 224. Top plate; 225. Support piece; 230. Supporting diagonal bar; 240. Horizontal plate; 250. Rotating shaft; 260. Top block; 270. Buffer plate; 300, Support mechanism; 310, Support housing; 320, Limiting component; 321, Return spring; 322, Limiting plate; 323, Limiting strip; 324, Limiting slider; 330, Adjusting channel; 340, Movable plate; 350, Damping spring; 360, Connecting gasket; 370, Protrusion; 380, Vibration damping plate. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example

[0027] Reference Figures 1-5 This is the first embodiment of the present invention, which provides an internal support replacement device for the construction of ultra-deep multi-story basements. This device includes, The support mechanism 100 includes a base 110, a rotating assembly 120 disposed on the top of the base 110, and a drive assembly 130 disposed on the top of the rotating assembly 120. The adjustment mechanism 200 includes a support plate 210, a lifting assembly 220 disposed on the top of the support plate 210, a support diagonal rod 230 hinged to the top of the lifting assembly 220, and a horizontal plate 240 hinged to the top of the support diagonal rod 230. The adjustment mechanism 200 also includes a pivot 250 hinged to the outside of the cross plate 240, a top block 260 fixedly installed on the outside of the pivot 250, and a buffer plate 270 fixedly installed on the top of the top block 260. And, a support mechanism 300 used in conjunction with the adjustment mechanism 200.

[0028] By combining a rotating bearing mechanism 100 with a multi-directional adjustment mechanism 200, the spatial multi-degree-of-freedom positioning of the support device is achieved. The rotating component 120 of the bearing mechanism 100 provides rotational adjustment capability in the horizontal plane, while the adjustment mechanism 200, through the synergistic action of the lifting component 220 and the support diagonal rod 230, can achieve vertical height adjustment and tilt angle adjustment. The design of the buffer plate 270 effectively absorbs the impact load from the enclosure structure, improving the overall stability of the device.

[0029] Specifically, the drive assembly 130 includes a linear guide rail 131 fixedly mounted on the top of the base 110, a drive sleeve 132 movably sleeved on the top of the linear guide rail 131, and a connecting plate 133 fixedly mounted on the top of the drive sleeve 132.

[0030] The drive assembly 130 adopts a precision-fit structure of linear guide rail 131 and drive sleeve 132 to ensure the linear motion accuracy of the device. The rigid connection design of the connecting plate 133 enables the driving force to be evenly transmitted to the adjustment mechanism 200, avoiding local stress concentration. This structure not only improves the positioning accuracy of the device, but also enhances its resistance to deformation under complex working conditions, making it particularly suitable for supporting the irregular excavation surface of ultra-deep foundation pits.

[0031] Furthermore, the lifting assembly 220 includes a fixed base 221 fixedly installed on the top of the support plate 210, an adjusting bracket 222 hinged to the top of the fixed base 221, and a limiting rod 223 movably sleeved on the rotating part of the adjusting bracket 222. The lifting assembly 220 also includes a top plate 224 fixedly installed on the top of the adjusting bracket 222 and a support piece 225 fixedly installed on the outside of the top plate 224.

[0032] The lifting assembly 220 employs a hinged structure of a fixed base 221 and an adjusting bracket 222, along with the sliding constraint of a limiting rod 223, to achieve stepless adjustment of the support height. This composite motion mechanism can precisely control the support angle while ensuring structural rigidity in the maximum extended state. The constraint effect of the limiting rod 223 effectively prevents unintended displacement of the adjusting bracket 222, improving the safety and reliability of the device. Through the combined design of the top plate 224 and the support plate 225, a stable force transmission path is formed. The top plate 224, as the main load-bearing component, has its flatness specially treated to ensure full contact with the supporting diagonal rod 230. The support plate 225 provides additional lateral constraints, effectively suppressing local deformation of the top plate 224. This double-strengthened structure enhances the load-bearing capacity and service life of the lifting assembly 220.

[0033] Preferably, the rotating assembly 120 includes a base plate 121 fixedly mounted on the top of the base 110, an annular support seat 122 fixedly mounted on the top of the base plate 121, and a servo motor 123 fixedly mounted in the inner cavity of the annular support seat 122. The rotating assembly 120 also includes a turntable 124 fixedly mounted on the top output end of the servo motor 123, and a support shaft disk 125 fixedly mounted on the top of the turntable 124. The top of the support shaft disk 125 is fixedly connected to the bottom of the drive sleeve 132.

[0034] The rotating component 120 employs a precision rotating mechanism driven by a servo motor 123. The annular support seat 122 provides stable rotational support for the turntable 124. The reinforced design of the base plate 121 effectively disperses the rotational torque and avoids local stress concentration. This structure enables precise angle adjustment of the support device, meeting the positioning requirements under different working conditions. The rigid connection between the turntable 124 and the support shaft disk 125 ensures reliable transmission of rotational torque. The fixed connection between the support shaft disk 125 and the drive sleeve 132 forms a complete force transmission path, avoiding the accumulation of clearance between the kinematic pairs. This integrated design improves the rotational accuracy and load-bearing capacity of the device, enabling the support system to adapt to the complex load conditions of ultra-deep foundation pits.

[0035] In use, the base 110 of the bearing mechanism 100 is first fixed to the bottom of the pit. The servo motor 123 of the rotating component 120 drives the turntable 124 to rotate, which in turn drives the drive component 130 to move horizontally. Then, the lifting component 220 is started, and the bracket 222 is adjusted in angle under the constraint of the fixed seat 221 and the limit rod 223. The horizontal plate 240 is raised and lowered by the support diagonal rod 230. Next, the rotating shaft 250 adjusts the contact angle between the top block 260 and the buffer plate 270 so that they are in close contact with the enclosure structure. Finally, the limit component 320 and the damping spring 350 of the support mechanism 300 work together to absorb construction vibration and maintain a stable support state.

[0036] In summary, the load-bearing mechanism 100, through the coordinated operation of the base 110, the rotating component 120, and the drive component 130, provides stable foundation support and horizontal rotation adjustment capability. The turntable 124 driven by the servo motor 123 and the support shaft disk 125 constitute a precise rotary transmission system. The adjustment mechanism 200 adopts a multi-stage hinge structure, forming multi-directional spatial support through the height adjustment of the lifting component 220 and the angle adjustment of the support diagonal rod 230. The composite load-bearing structure of the top plate 224 and the support plate 225 ensures the stability of force transmission. The support mechanism 300 effectively absorbs construction dynamic loads through the buffer design of the limiting component 320 and the damping spring 350. Through modular design, it realizes precise adjustment of support angle, height, and position, and has good self-adaptability and anti-deformation performance. It is particularly suitable for the complex working conditions in the construction of ultra-deep multi-story basements, improving construction safety and efficiency. Example

[0037] Reference Figure 1 , Figure 4 and Figure 5 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that it provides a support mechanism 300 and a multi-layer buffer design, which realizes accurate compensation for the displacement of the enclosure structure and effective absorption of dynamic loads.

[0038] Furthermore, the support mechanism 300 includes a support housing 310 fixedly installed on the outside of the horizontal plate 240, a limiting component 320 disposed in the inner cavity of the support housing 310, an adjustment channel 330 opened on the outside of the support housing 310, a movable plate 340 movably locked in the inner cavity of the support housing 310, and a damping spring 350 fixedly installed on the top of the movable plate 340. The support mechanism 300 also includes a connecting pad 360 fixedly installed on the top of the damping spring 350, a protrusion 370 fixedly installed on the top of the connecting pad 360, and a damping plate 380 fixedly installed on the top of the protrusion 370.

[0039] The support mechanism 300 adopts a modular design. The support shell 310 provides precise guiding space for the limiting component 320 and the movable plate 340. The cooperation between the adjustment channel 330 and the movable plate 340 realizes the adaptive adjustment of the support surface, which can compensate for the construction error of the enclosure structure. The setting of the damping spring 350 effectively absorbs dynamic loads, reduces the vibration transmission of the support system, and improves the stability of the support. Through the multi-layer buffer structure of the connecting shim 360, the protrusion 370 and the damping plate 380, a gradient damping system is formed. The connecting shim 360 realizes the transition between rigid connection and elastic deformation, the protrusion 370 provides local reinforcement support, and the damping plate 380 directly contacts the enclosure structure, dissipating energy through material deformation.

[0040] Furthermore, the limiting assembly 320 includes a return spring 321 fixedly installed in the inner cavity of the support housing 310, and a limiting plate 322 fixedly installed on the top of the return spring 321. The limiting assembly 320 also includes a limiting strip 323 fixedly installed on the outside of the limiting plate 322, and a limiting slider 324 fixedly installed on the outside of the limiting strip 323. The limiting slider 324 is movably engaged in the inner cavity of the adjusting channel 330.

[0041] The limiting component 320 adopts a combination structure of a return spring 321 and a limiting plate 322, which realizes the automatic reset function of the support mechanism 300. The return spring 321 provides a stable preload, while the limiting plate 322 ensures the precise guidance of the moving parts. This design not only ensures the adjustment flexibility of the support mechanism 300, but also maintains the structural stability in the working state, effectively avoiding the phenomenon of support loosening. Through the precise cooperation of the limiting strip 323 and the limiting slider 324, the multi-directional constraint of the support mechanism 300 is realized. The sliding of the limiting slider 324 along the adjustment channel 330 ensures both the degree of freedom of movement and provides a reliable limiting function.

[0042] When the enclosure structure is displaced during use, the damping plate 380 transmits the load to the damping spring 350 through the protrusion 370 and the connecting shim 360. The movable plate 340 slides in the inner cavity of the support housing 310, the limiting slider 324 moves along the adjustment channel 330, and the reset spring 321 maintains the stability of the system.

[0043] In summary, the support mechanism 300, through its modular design and multi-layer buffer structure, achieves adaptive adjustment of the displacement of the retaining structure and effective dissipation of vibration energy. The limiting component 320 ensures the stability and reset function of the system during the adjustment process, making it suitable for complex working conditions in ultra-deep foundation pit construction.

[0044] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims. Furthermore, for the purpose of providing a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features not relevant to the currently considered best mode for carrying out the invention, or those features not relevant to implementing the invention) may be omitted.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An internal support replacement device for the construction of ultra-deep multi-story basements, characterized in that: include, The support mechanism (100) includes a base (110), a rotating component (120) disposed on the top of the base (110), and a drive component (130) disposed on the top of the rotating component (120). The adjustment mechanism (200) includes a support plate (210), a lifting assembly (220) disposed on the top of the support plate (210), a support diagonal rod (230) hinged to the top of the lifting assembly (220), and a horizontal plate (240) hinged to the top of the support diagonal rod (230). The adjustment mechanism (200) further includes a pivot (250) hinged to the outside of the horizontal plate (240), a top block (260) fixedly installed on the outside of the pivot (250), and a buffer plate (270) fixedly installed on the top of the top block (260). And a support mechanism (300) used in conjunction with the adjustment mechanism (200); The drive assembly (130) includes a linear guide rail (131) fixedly mounted on the top of the base (110), a drive sleeve (132) movably sleeved on the top of the linear guide rail (131), and a connecting plate (133) fixedly mounted on the top of the drive sleeve (132). The lifting assembly (220) includes a fixed seat (221) fixedly installed on the top of the support plate (210), an adjusting bracket (222) hinged to the top of the fixed seat (221), and a limiting rod (223) movably sleeved on the rotating part of the adjusting bracket (222). The lifting assembly (220) also includes a top plate (224) fixedly installed on the top of the adjusting bracket (222) and a support plate (225) fixedly installed on the outside of the top plate (224). The support mechanism (300) includes a support housing (310) fixedly installed on the outside of the cross plate (240), a limiting component (320) disposed in the inner cavity of the support housing (310), an adjustment channel (330) opened on the outside of the support housing (310), a movable plate (340) movably locked in the inner cavity of the support housing (310), and a damping spring (350) fixedly installed on the top of the movable plate (340). The support mechanism (300) further includes a connecting pad (360) fixedly mounted on the top of the damping spring (350), a protrusion (370) fixedly mounted on the top of the connecting pad (360), and a damping plate (380) fixedly mounted on the top of the protrusion (370).

2. The internal support replacement device for ultra-deep multi-story basement construction according to claim 1, characterized in that: The limiting assembly (320) includes a return spring (321) fixedly installed in the inner cavity of the support housing (310), and a limiting plate (322) fixedly installed on the top of the return spring (321).

3. The internal support replacement device for ultra-deep multi-story basement construction according to claim 2, characterized in that: The limiting component (320) further includes a limiting strip (323) fixedly installed on the outside of the limiting plate (322), and a limiting slider (324) fixedly installed on the outside of the limiting strip (323), wherein the limiting slider (324) is movably engaged in the inner cavity of the adjusting channel (330).

4. The internal support replacement device for construction of ultra-deep multi-story basements according to claim 3, characterized in that: The rotating assembly (120) includes a base plate (121) fixedly mounted on the top of the base (110), an annular support seat (122) fixedly mounted on the top of the base plate (121), and a servo motor (123) fixedly mounted in the inner cavity of the annular support seat (122).

5. The internal support replacement device for construction of ultra-deep multi-story basements according to claim 4, characterized in that: The rotating assembly (120) also includes a turntable (124) fixedly installed at the top output end of the servo motor (123), and a support shaft disk (125) fixedly installed on the top of the turntable (124), the top of the support shaft disk (125) being fixedly connected to the bottom of the drive sleeve (132).

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