Recyclable deep foundation pit assembly type supporting rod piece locking device

Abstract

The invention discloses a recoverable deep foundation pit assembly type supporting rod piece locking device, and belongs to the technical field of deep foundation pit supporting. The device comprises a supporting structure, the supporting structure comprises two upper supporting rods, two lower supporting rods and two transverse supporting rods, the upper supporting rods, the lower supporting rods and the transverse supporting rods are connected and assembled into the supporting structure through four locking structures, and each locking structure comprises a connecting rod, an upper sliding block, a lower sliding block and a middle sliding block. A sliding groove is formed in the middle of the side wall of the connecting rod, and the upper, middle and lower portions of the sliding groove are slidably sleeved with an upper sliding block, a middle sliding block and a lower sliding block respectively. The supporting structures can be conveniently assembled and locked, the assembling time is saved, the labor intensity of workers is reduced, and the two vertically adjacent supporting structures can be spliced together by inserting the inserting rods into the inserting holes below the inserting rods, so that the adjacent locking structures can be conveniently disassembled and recycled.

Description

Technical Field

[0001] This invention relates to the field of deep foundation pit support technology, specifically to a recyclable prefabricated support rod locking device for deep foundation pits. Background Technology

[0002] Deep foundation pits refer to foundation pit excavation, support, and dewatering projects with an excavation depth exceeding 5m, or foundation pit excavation, support, and dewatering projects with an excavation depth not exceeding 5m but with complex geological conditions, surrounding environment, and underground pipelines, or that affect the safety of adjacent buildings.

[0003] During deep foundation pit excavation, the original soil equilibrium is disrupted. Without support, the soil slopes of the pit are prone to collapse, landslides, and other unstable phenomena under their own weight and ground loads. Support structures can limit pit deformation, reduce disturbance to the surrounding soil, thus protecting the foundation stability of nearby buildings and preventing road cracking and underground pipeline rupture. Erecting support structures provides a safe working space for deep foundation pit construction personnel and equipment, preventing soil collapse from burying them, reducing safety hazards during construction, and ensuring smooth construction progress. When supporting the pit with support rods, locking devices must be used to secure the support rods.

[0004] In the current field of deep foundation pit construction, the construction and application of support structures face numerous technical bottlenecks. The installation process of traditional deep foundation pit support structures is complex, involving the precise splicing of multiple components and high-intensity work. This not only requires a high level of technical proficiency from construction personnel but also greatly increases the labor intensity of workers, resulting in low construction efficiency and high safety hazards. Furthermore, after the foundation pit is poured using molds, it is not easy to recycle and reuse the locking devices, which increases construction costs. Summary of the Invention

[0005] The purpose of this invention is to provide a recyclable prefabricated support rod locking device for deep foundation pits, in order to solve the problems mentioned in the background art, such as the cumbersome installation process of foundation pit support structures, which leads to high labor intensity and inconvenience in recycling the locking device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a recyclable prefabricated support rod locking device for deep foundation pits, comprising a support structure, wherein the support structure includes an upper support rod, a lower support rod, and a transverse support rod, wherein two of each of the upper support rod, lower support rod, and transverse support rod are provided and connected and assembled into the support structure through four locking structures;

[0007] The locking structure includes a connecting rod, an upper slider, a lower slider, and a middle slider. A groove is provided in the middle of the side wall of the connecting rod. The upper slider, the middle slider, and the lower slider are slidably fitted in the upper, middle, and lower parts of the groove, respectively. An upper locking rod is fixedly installed in the middle of the front side wall of the upper slider, a lower locking rod is fixedly installed in the middle of the front side wall of the lower slider, and a middle locking rod is fixedly installed in the middle of the rear side wall of the middle slider.

[0008] Preferably, two upper support plates located below the upper slider are fixedly installed on the top of the front sidewall of the connecting rod. An upper locking rod is fixedly installed on the top surface of each of the two upper support plates. The upper support plates, the upper locking rod, and the upper locking rod cooperate with each other to lock the end of the upper support rod. The first locking hole at the end of the upper support rod is engaged in the upper locking rod, and then the upper slider slides down along the inner wall of the slide groove, so that the upper locking rod is inserted into the first locking hole.

[0009] Preferably, two lower support plates located below the lower slider are fixedly installed at the bottom end of the front sidewall of the connecting rod. A lower locking rod is fixedly installed in the middle of the top surface of each of the two lower support plates. The lower support plates, lower locking rods and lower locking rods cooperate with each other to lock the end of the lower support rod.

[0010] Preferably, a middle support plate located below the middle slider is fixedly installed in the middle of the back of the connecting rod, and a middle locking rod is fixedly installed in the middle of the top surface of both middle support plates. The middle support plate, the middle locking rod and the middle locking rod cooperate with each other to limit and fix the end of the transverse support rod.

[0011] Preferably, the upper and lower support rods each have a first locking hole at both ends corresponding to the positions of the upper and lower locking rods. The upper and lower support rods also have first engaging holes symmetrically distributed on the left and right sides of the first locking holes. The first engaging holes correspond to the positions of the upper and lower engaging rods. The horizontal support rod has a second locking hole at both ends. The horizontal support rod also has second engaging holes symmetrically distributed on the front and rear sides of the second locking holes. The positions of the second engaging holes correspond to the positions of the middle engaging rod. The upper and lower locking rods are inserted into the first locking holes, and the middle locking rod is inserted into the second locking holes.

[0012] Preferably, the first locking hole and the second locking hole have the same specifications and are both blind holes; the first snap-fit ​​hole and the second snap-fit ​​hole have the same specifications and are both through holes; the upper locking rod, the lower locking rod and the middle support plate have the same specifications and are all "L" shaped; and the diameters of the upper locking rod, the lower locking rod and the middle locking rod are the same as the diameters of the first locking hole and the second locking hole.

[0013] Preferably, the upper locking rod, lower locking rod, and middle locking rod have the same specifications, and the diameter of the upper locking rod, lower locking rod, and middle locking rod is the same as the diameter of the first locking hole and the second locking hole.

[0014] Preferably, a threaded rod is rotatably mounted on the inner wall of the chute via a bearing ring, and a handwheel is fixedly mounted on the top surface of the threaded rod through the top surface of the connecting rod. The upper slider, lower slider, and middle slider are all threadedly fitted onto the outer surface of the threaded rod. By rotating the threaded rod, the upper slider, lower slider, and middle slider can be moved along the inner wall of the chute.

[0015] Preferably, each of the four corners of the top surface of the connecting rod has a plug-in hole, and each of the four corners of the bottom surface of the connecting rod has a plug-in rod that matches the specification of the plug-in hole. The plug-in rod is inserted into the plug-in hole at an adjacent position. Specifically, by inserting the plug-in rod into the plug-in hole located below it, the upper and lower locking structures can be spliced ​​together.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention involves placing the ends of the upper and lower support rods on the top surfaces of the upper and lower support plates, respectively, and inserting the upper and lower locking rods into the first locking holes of the upper and lower support rods, respectively. Then, the end of the transverse support rod is placed on the top surface of the middle support plate, and the middle locking rod is inserted into the second locking hole. Subsequently, the upper slider, lower slider, and middle slider move downwards along the inner wall of the slide groove, causing the upper slider to insert into the first locking hole at the end of the upper support rod, and the lower locking rod to insert into the lower support rod. The middle locking rod is inserted into the second locking hole at the end of the transverse support rod in the first locking hole at the end of the rod. This locks the upper support rod, lower support rod, and transverse support rod together, forming a support structure. This facilitates the assembly and locking of the support structure, saves assembly time, and reduces the labor intensity of workers. Furthermore, by inserting the connecting rod into the connecting hole below it, two adjacent support structures can be spliced ​​together, making it easier to disassemble and recycle adjacent locking structures. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side view of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the locking structure of the present invention;

[0021] Figure 4 This is a side view of the locking structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the upper support rod structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the transverse support rod structure of the present invention.

[0024] In the diagram: 1. Upper support rod; 11. First locking hole; 12. First snap-fit ​​hole; 2. Lower support rod; 3. Horizontal support rod; 31. Second locking hole; 32. Second snap-fit ​​hole; 4. Locking structure; 41. Connecting rod; 42. Slide groove; 43. Upper slider; 44. Upper locking rod; 45. Upper support plate; 46. Upper snap-fit ​​rod; 47. Lower slider; 48. Lower locking rod; 49. Lower support plate; 410. Lower snap-fit ​​rod; 411. Middle slider; 412. Middle locking rod; 413. Middle support plate; 414. Middle snap-fit ​​rod; 415. Handwheel; 416. Insertion hole; 417. Insertion rod; 418. Threaded rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-6 This invention provides a recyclable deep foundation pit prefabricated support rod locking device, including a support structure. The support structure includes an upper support rod 1, a lower support rod 2, and a transverse support rod 3. Each of the upper support rod 1, the lower support rod 2, and the transverse support rod 3 has two members and is connected and assembled into a support structure through four locking structures 4.

[0027] The locking structure 4 includes a connecting rod 41, an upper slider 43, a lower slider 47, and a middle slider 411. A groove 42 is provided in the middle of the side wall of the connecting rod 41. The upper slider 43, the middle slider 411, and the lower slider 47 are slidably mounted in the upper, middle, and lower parts of the groove 42, respectively. An upper locking rod 44 is fixedly installed in the middle of the front side wall of the upper slider 43. A lower locking rod 48 is fixedly installed in the middle of the front side wall of the lower slider 47. A middle locking rod 412 is fixedly installed in the middle of the rear side wall of the middle slider 411.

[0028] Two upper support plates 45 located below the upper slider 43 are fixedly installed on the top of the front side wall of the connecting rod 41. The top surfaces of the two upper support plates 45 are fixedly installed with upper locking rods 46. The upper support plates 45, upper locking rods 46 and upper locking rods 44 cooperate with each other to lock the end of the upper support rod 1. The first locking hole 12 at the end of the upper support rod 1 is locked into the upper locking rod 46, and then the upper slider 43 slides down along the inner wall of the slide groove 42, so that the upper locking rod 44 is inserted into the first locking hole 11.

[0029] Two lower support plates 49 located below the lower slider 47 are fixedly installed at the bottom of the front side wall of the connecting rod 41. A lower locking rod 410 is fixedly installed in the middle of the top surface of each of the two lower support plates 49. The lower support plates 49, the lower locking rods 410 and the lower locking rods 48 can lock the end of the lower support rod 2 by cooperating with each other.

[0030] A middle support plate 413 located below the middle slider 411 is fixedly installed on the middle part of the back of the connecting rod 41. A middle locking rod 414 is fixedly installed on the middle part of the top surface of both middle support plates 413. The middle support plate 413, the middle locking rod 414 and the middle locking rod 412 cooperate with each other to limit and fix the end of the transverse support rod 3.

[0031] Both ends of the upper support rod 1 and the lower support rod 2 are provided with first locking holes 11 corresponding to the positions of the upper locking rod 44 and the lower locking rod 48. Both ends of the upper support rod 1 and the lower support rod 2 are also provided with first snap-fit ​​holes 12 symmetrically distributed on the left and right sides of the first locking holes 11. The first snap-fit ​​holes 12 correspond to the positions of the upper snap-fit ​​rod 46 and the lower snap-fit ​​rod 410. Both ends of the transverse support rod 3 are provided with second locking holes 31. Both ends of the transverse support rod 3 are also provided with second snap-fit ​​holes 32 symmetrically distributed on the front and rear sides of the second locking holes 31. The positions of the second snap-fit ​​holes 32 correspond to the positions of the middle snap-fit ​​rod 414. The upper locking rod 44 and the lower locking rod 48 are inserted into the interior of the first locking holes 11, and the middle locking rod 412 is inserted into the interior of the second locking holes 31.

[0032] The first locking hole 11 and the second locking hole 31 have the same specifications and are both blind holes. The first snap-fit ​​hole 12 and the second snap-fit ​​hole 32 have the same specifications and are both through holes. The upper locking rod 44, the lower locking rod 48 and the middle support plate 413 have the same specifications and are all "L" shaped. The diameters of the upper locking rod 44, the lower locking rod 48 and the middle locking rod 412 are the same as the diameters of the first locking hole 11 and the second locking hole 31.

[0033] The upper locking rod 46, the lower locking rod 410, and the middle locking rod 414 have the same specifications, and the diameters of the upper locking rod 46, the lower locking rod 410, and the middle locking rod 414 are the same as the diameters of the first locking hole 12 and the second locking hole 32.

[0034] A threaded rod 418 is rotatably mounted on the inner wall of the slide groove 42 via a bearing ring. A handwheel 415 is fixedly mounted on the top surface of the threaded rod 41, which passes through the top surface of the connecting rod 41. The upper slider 43, the lower slider 47, and the middle slider 411 are all threadedly fitted onto the outer surface of the threaded rod 418. By rotating the threaded rod 418, the upper slider 43, the lower slider 47, and the middle slider 411 can be moved along the inner wall of the slide groove 42.

[0035] The top surface of the connecting rod 41 has four corners with insertion holes 416, and the bottom surface of the connecting rod 41 has four corners with insertion rods 417 that match the specifications of the insertion holes 416. The insertion rods 417 are inserted into the insertion holes 416 at adjacent positions. When the insertion rods 417 are inserted into the insertion holes 416 located below them, the upper and lower locking structures 4 can be spliced ​​together.

[0036] Working principle: In use, the ends of the upper support rod 1 and the lower support rod 2 are placed on the top surfaces of the upper support plate 45 and the lower support plate 49, respectively, and the upper locking rod 46 and the lower locking rod 410 are inserted into the first locking holes 12 of the upper support rod 1 and the lower support rod 2, respectively. Then, the end of the transverse support rod 3 is placed on the top surface of the middle support plate 413, and the middle locking rod 414 is inserted into the second locking hole 32. Then, the handwheel 415 drives the threaded rod 418 to rotate, thereby causing the upper slider 43, the lower slider 47, and the middle slider 411 to move downwards along the inner wall of the slide groove 42. The upper slider 43 is inserted into the first locking hole 11 at the end of the upper support rod 1, the lower locking rod 48 is inserted into the first locking hole 11 at the end of the lower support rod 2, and the middle locking rod 412 is inserted into the first locking hole 12 at the end of the lower support rod 2. By inserting the upper support rod 1, lower support rod 2, and transverse support rod 3 into the second locking hole 31 at the end of the transverse support rod 3, the upper support rod 1, lower support rod 2, and transverse support rod 3 can be locked together, forming a support structure. This facilitates the assembly and locking of the support structure, saves assembly time, and reduces the labor intensity of workers. By inserting the plug rod 417 into the plug hole 416 below it, two adjacent support structures can be spliced ​​together. When it is necessary to retrieve the locking structure 4, the locking structure 4 can be moved upwards until the locking structure 4 and the support structure are removed from the pit. Then, the threaded rod 418 can be rotated by the handwheel 415 to engage the locking of the support structure. Finally, the locking structure 4 can be removed to complete the retrieval of the locking structure 4.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A recyclable prefabricated support rod locking device for deep foundation pits, characterized in that: The support structure includes an upper support rod (1), a lower support rod (2), and a transverse support rod (3). Each of the upper support rod (1), the lower support rod (2), and the transverse support rod (3) has two members and is connected and assembled into a support structure by four locking structures (4). The locking structure (4) includes a connecting rod (41), an upper slider (43), a lower slider (47), and a middle slider (411). A groove (42) is provided in the middle of the side wall of the connecting rod (41). The upper slider (43), the middle slider (411), and the lower slider (47) are slidably fitted in the upper, middle, and lower parts of the groove (42). An upper locking rod (44) is fixedly installed in the middle of the front side wall of the upper slider (43). A lower locking rod (48) is fixedly installed in the middle of the front side wall of the lower slider (47). A middle locking rod (412) is fixedly installed in the middle of the rear side wall of the middle slider (411).

2. The recyclable deep foundation pit prefabricated support rod locking device according to claim 1, characterized in that: Two upper support plates (45) located below the upper slider (43) are fixedly installed on the top of the front side wall of the connecting rod (41), and upper locking rods (46) are fixedly installed on the top surface of the two upper support plates (45).

3. The recyclable deep foundation pit prefabricated support rod locking device according to claim 2, characterized in that: Two lower support plates (49) located below the lower slider (47) are fixedly installed at the bottom of the front side wall of the connecting rod (41), and a lower locking rod (410) is fixedly installed at the middle of the top surface of the two lower support plates (49).

4. The recyclable deep foundation pit prefabricated support rod locking device according to claim 3, characterized in that: A middle support plate (413) located below the middle slider (411) is fixedly installed in the middle of the back of the connecting rod (41), and a middle locking rod (414) is fixedly installed in the middle of the top surface of both middle support plates (413).

5. A recyclable deep foundation pit prefabricated support rod locking device according to claim 4, characterized in that: The upper support rod (1) and the lower support rod (2) are provided with first locking holes (11) at both ends, corresponding to the positions of the upper locking rod (44) and the lower locking rod (48). The upper support rod (1) and the lower support rod (2) are also provided with first snap-fit ​​holes (12) symmetrically distributed on the left and right sides of the first locking holes (11). The first snap-fit ​​holes (12) correspond to the positions of the upper snap-fit ​​rod (46) and the lower snap-fit ​​rod (410). The left and right ends of the transverse support rod (3) are provided with second locking holes (31). The left and right ends of the transverse support rod (3) are also provided with second snap-fit ​​holes (32) symmetrically distributed on the front and rear sides of the second locking holes (31). The position of the second snap-fit ​​holes (32) corresponds to the position of the middle snap-fit ​​rod (414).

6. A recyclable prefabricated support rod locking device for deep foundation pits according to claim 5, characterized in that: The first locking hole (11) and the second locking hole (31) have the same specifications and are both blind holes. The first snap-fit ​​hole (12) and the second snap-fit ​​hole (32) have the same specifications and are both through holes. The upper locking rod (44), the lower locking rod (48) and the middle support plate (413) have the same specifications and are all "L" shaped. The diameters of the upper locking rod (44), the lower locking rod (48) and the middle locking rod (412) are the same as the diameters of the first locking hole (11) and the second locking hole (31).

7. A recyclable prefabricated support rod locking device for deep foundation pits according to claim 6, characterized in that: The upper locking rod (46), lower locking rod (410) and middle locking rod (414) have the same specifications, and the diameters of the upper locking rod (46), lower locking rod (410) and middle locking rod (414) are the same as the diameters of the first locking hole (12) and the second locking hole (32).

8. A recyclable prefabricated support rod locking device for deep foundation pits according to claim 1, characterized in that: The inner wall of the slide groove (42) is rotatably mounted with a threaded rod (418) through a bearing ring. The top surface of the threaded rod (418) passes through the top surface of the connecting rod (41) and a handwheel (415) is fixedly mounted thereon. The upper slider (43), lower slider (47) and middle slider (411) are all threadedly fitted onto the outer surface of the threaded rod (418).

9. A recyclable prefabricated support rod locking device for deep foundation pits according to claim 1, characterized in that: The four corners of the top surface of the connecting rod (41) are provided with insertion holes (416), and the four corners of the bottom surface of the connecting rod (41) are fixedly installed with insertion rods (417) that match the specifications of the insertion holes (416). The insertion rods (417) are inserted into the insertion holes (416) at adjacent positions.

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