Mounting device for steel support and crown beam in foundation pit in narrow space

Abstract

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a mounting device for a steel support and a top beam in a narrow space foundation pit, which comprises a foundation pit, a supporting assembly and a steel support assembly, the supporting assembly is arranged on the inner wall of a foundation pit, the steel supporting assembly is installed at the corner of the inner wall of the foundation pit, and the steel supporting assembly is attached to the supporting assembly. The steel supporting assembly is installed at the corner of the inner wall of a foundation pit, is used for freely assembling the right-angle connecting position of a crown beam in a narrow space of the foundation pit and the foundation pit, and is compatible to the crown beams with different widths, so that the collapse resistance of the right-angle connecting position of the crown beam is improved, and meanwhile, the reinforcing effect can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit support, and in particular relates to an installation device for steel supports and crown beams in a foundation pit with a narrow space. Background Art

[0002] At present, the deep foundation pit support method is to embed the supporting steel plate before pouring the crown beam concrete, and then weld the bracket steel plate to the embedded supporting steel plate, and then install the steel support.

[0003] After searching, in the prior art, Chinese patent publication number CN220746953U, authorization announcement date: 2024-04-09, discloses an assembled steel internal support structure for foundation pit support engineering, including steel columns, crown beams, steel supports and intermediate steel structures. The crown beams are installed around the foundation pit, and the steel columns are installed on the inner top surface of the foundation pit. The steel supports are detachably arranged at the corners of the foundation pit, and the bottom surface of the steel supports is pressed against the top of the steel columns. After the steel supports are assembled with the corners of the crown beams, a triangular structure is obtained. The intermediate steel structure is horizontally fixed in the middle of the foundation pit, which can reduce the difficulty of connecting the beam structures, ensure the safety of operators when working in the foundation pit, and ensure the construction efficiency of operators.

[0004] However, the equipment still has the following defects: although it can ensure the safety of operators when working in the foundation pit, it is unable to conduct continuous inspection of the crown beam after the steel inner support structure is installed, and is unable to effectively adjust the reinforcement strength of the crown beam based on the inspection, increasing the risk of collapse of the foundation pit in a small space. Summary of the invention

[0005] In view of the above problems, the present invention provides a device for installing steel supports and crown beams in a narrow space foundation pit, comprising a foundation pit, a support assembly and a steel support assembly; the support assembly is arranged on the inner wall of the foundation pit, the steel support assembly is installed at the corner of the inner wall of the foundation pit, and the steel support assembly is fitted with the support assembly;

[0006] The steel support assembly is installed at the corner of the inner wall of the foundation pit. It is used to freely assemble the right-angle connection of the crown beam in the narrow space of the foundation pit. It is compatible with crown beams of different widths, so that the collapse resistance of the right-angle connection of the crown beam is improved.

[0007] Furthermore, the support assembly includes a construction area; a plurality of groups of support piles are arranged on the inner wall of the construction area, and the plurality of groups of support piles are longitudinally arranged at equal intervals, and a pile-soil cavity is arranged on the inner wall of the construction area near the top.

[0008] Furthermore, a step surface is formed at the connection between the pile-soil cavity and the construction area, and pile heads are arranged on the tops of several groups of the supporting piles. A crown beam is arranged inside the pile-soil cavity, and several groups of pile heads are embedded and installed inside the crown beam, and the crown beam is arranged at a right angle.

[0009] Furthermore, the steel support assembly includes a support frame and a detection mechanism; an adjustment cavity is opened on one side wall of the support frame, a linkage block is fitted and connected to the inner wall of the adjustment cavity, hollow sliding cavities are opened on the top and bottom of the support frame, and two groups of hollow sliding cavities are interconnected with the adjustment cavity.

[0010] Furthermore, an axle pin is embedded and installed at the center of the central axis of the linkage block, and both ends of the axle pin extend into the hollow sliding cavity. Externally threaded tubes are embedded and installed on both sides of the outer wall of the linkage block, and the connection between the two groups of externally threaded tubes is set at a right angle, and the outside of the two groups of externally threaded tubes is sleeved with internally threaded tubes.

[0011] Furthermore, the inner wall of the internal threaded tube is fitted with a transverse support rod, and one end of the transverse support rod is butted against the end of the external threaded tube. The outer wall of the transverse support rod is provided with a spring telescopic plate, and one end of the spring telescopic plate is provided with a limiting plate, and the limiting plate is movably butted against the outer wall of the crown beam.

[0012] Furthermore, a servo motor is fixedly connected to the top of the support frame, and a lead screw is transmission-connected to the output end of the servo motor, and the end of the lead screw, which is away from the servo motor, is threadedly connected to the shaft pin.

[0013] Furthermore, a cover plate is clamped on the top of the support frame, and the hollow sliding cavity, axle pin, servo motor and screw rod are all arranged in the cover plate. An embedded groove is opened at the bottom of the support frame, and the embedded groove is arranged at a right angle. The embedded groove is clamped on the top of the crown beam, and the width of the embedded groove is greater than the width of the crown beam.

[0014] Furthermore, two groups of bolts penetrate the top of the support frame, and the two groups of bolts are distributed in the embedded groove near the port, one end of the two groups of bolts are threadedly connected to the crown beam, and the detection mechanism is fixedly connected to the bottom of the shaft pin.

[0015] Furthermore, the detection mechanism includes a guide cylinder; both ends of the guide cylinder are open structures, both ends of the guide cylinder are movably connected with guide rods, and one end of the two groups of guide rods is provided with a spherical contact, a pressure sensor is provided at the center of the central axis of the inner wall of the guide cylinder, springs are provided on both sides of the pressure sensor, and the two groups of springs are movably connected with the end of the guide rod, and the spherical contact is fitted and connected with the outer wall of the crown beam near the right angle.

[0016] The beneficial effects of the present invention are:

[0017] 1. The steel support assembly is installed at the inner corner of the foundation pit, and is used to freely assemble the right-angle connection of the crown beam in the narrow space of the foundation pit. It is compatible with crown beams of different widths, which improves the collapse resistance of the right-angle connection of the crown beam and improves the reinforcement effect.

[0018] 2. The support frame is clamped on the top of the crown beam, and the thickness of the side wall of the edge of the embedded groove is used to sleeve on both sides of the crown beam, so that the support frame can be compatible with crown beams of different widths, and the end threads of two sets of bolts are used to fasten the support frame to the top of the crown beam, so that the support frame can be installed on the top of crown beams of different widths.

[0019] 3. The spherical contact can always contact the outer wall connected to the crown beam. When the top of the foundation pit causes the crown beam to deviate due to the influence of lateral gravity, the spherical contact on one side can promptly feed back to the guide rod, so that the guide rod on that side contacts the spring compression pressure sensor at the location, so that the pressure sensor transmits the signal to the controller. After analysis by the controller, the servo motor is driven to rotate, so that the screw rod is threadedly connected to the end of the shaft pin, and the linkage block slides radially along the hollow sliding cavity, which is used to further pull the lateral support rods on both sides, so that the limit plates on the lateral support rods on both sides contact the outer wall of the crown beam, and in the process of adaptive adjustment of the spring telescopic plate, the tension effect after the limit plate adjustment is completed.

[0020] 4. The support frame can be used for any right-angle position of the crown beam. After assembling four sets of support frames, the ends of four sets of lateral support rods can be used for splicing and combination at the same level to form a U-shaped lateral support, which can further enhance the structural strength of the combined installation of steel support and crown beam within the foundation pit range, as well as the comprehensive detection and adjustment of the inner wall of the foundation pit after the combination.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1A schematic diagram of the structure of the installation device of the steel support and the crown beam according to the embodiment of the present invention is shown;

[0024] Figure 2 The structure of the support assembly of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 3 The structure of the support assembly of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 4 The steel support assembly structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 5 The steel support assembly structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 6 A schematic structural diagram of a detection mechanism according to an embodiment of the present invention is shown.

[0029] In the figure: 1. foundation pit; 2. support assembly; 21. construction area; 22. support pile; 23. pile soil cavity; 24. pile head; 25. crown beam; 3. steel support assembly; 31. support frame; 32. adjustment cavity; 33. linkage block; 34. hollow sliding cavity; 35. axle pin; 36. external threaded cylinder; 37. internal threaded cylinder; 38. transverse support rod; 39. spring telescopic plate; 310. limit plate; 311. servo motor; 312. screw rod; 313. cover plate; 314. embedded groove; 315. bolt; 316. detection mechanism; 3161. guide cylinder; 3162. guide rod; 3163. spherical contact. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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] The embodiment of the present invention provides a device for installing steel supports and crown beams in a narrow space foundation pit, including a foundation pit 1, a support assembly 2 and a steel support assembly 3; for example, Figure 1 shown.

[0032] The support assembly 2 is arranged on the inner wall of the foundation pit 1 , and the steel support assembly 3 is installed at the corner of the inner wall of the foundation pit 1 , and the steel support assembly 3 is in close contact with the support assembly 2 .

[0033] Specifically, the steel support assembly 3 is installed at the inner wall corner of the foundation pit 1, and is used to freely assemble the right-angle connection of the crown beam in the foundation pit in the narrow space of the foundation pit. It is compatible with crown beams of different widths, so that the collapse resistance of the right-angle connection of the crown beam is improved.

[0034] The support assembly 2 includes a construction area 21; illustratively, as Figure 2 and Figure 3 shown.

[0035] The inner wall of the construction area 21 is provided with several groups of supporting piles 22, and the several groups of supporting piles 22 are longitudinally arranged at equal intervals. The inner wall of the construction area 21 and near the top is provided with a pile-soil cavity 23, and the connection between the pile-soil cavity 23 and the construction area 21 forms a step surface. The tops of the several groups of supporting piles 22 are provided with pile heads 24, and the interior of the pile-soil cavity 23 is provided with a crown beam 25, and the several groups of pile heads 24 are embedded and installed in the interior of the crown beam 25, and the crown beam 25 is arranged at a right angle.

[0036] Specifically, the pile-soil cavity 23 is formed by excavating the pile soil, so that the pile heads 24 on the tops of several groups of supporting piles 22 are exposed in the pile-soil cavity 23 , and the crown beam 25 is formed by steel bar binding and formwork support, and then crown beam concrete is poured.

[0037] The steel support assembly 3 includes a support frame 31 and a detection mechanism 316; illustratively, Figure 4 and Figure 5 shown.

[0038] An adjustment cavity 32 is provided on one side wall of the support frame 31, and a linkage block 33 is fitted and connected to the inner wall of the adjustment cavity 32. A hollow sliding cavity 34 is provided on the top and bottom of the support frame 31, and two groups of the hollow sliding cavities 34 are communicated with the adjustment cavity 32. An axle pin 35 is embedded and installed at the center of the central axis of the linkage block 33, and both ends of the axle pin 35 extend into the hollow sliding cavity 34. External threaded cylinders 36 are embedded and installed on both sides of the outer wall of the linkage block 33. The connection between the two groups of external threaded tubes 36 is arranged at a right angle. The external parts of the two groups of external threaded tubes 36 are sleeved with internal threaded tubes 37. The inner walls of the internal threaded tubes 37 are fitted with transverse support rods 38, and one end of the transverse support rods 38 is connected to the end of the external threaded tubes 36. The outer wall of the transverse support rods 38 is provided with a spring expansion plate 39, and one end of the spring expansion plate 39 is provided with a limit plate 310, and the limit plate 310 is movably connected to the crown. The outer wall of the beam 25, the top of the support frame 31 is also fixedly connected to a servo motor 311, and the output end of the servo motor 311 is transmission-connected to a screw rod 312, the end of the screw rod 312 and the end away from the servo motor 311 is threadedly connected to the shaft pin 35, the top of the support frame 31 is clamped with a cover plate 313, and the hollow sliding cavity 34, the shaft pin 35, the servo motor 311 and the screw rod 312 are all arranged in the cover plate 313, and the bottom of the support frame 31 is open. An embedded groove 314 is provided, and the embedded groove 314 is set at a right angle. The embedded groove 314 is clamped on the top of the crown beam 25, and the width of the embedded groove 314 is greater than the width of the crown beam 25. Two groups of bolts 315 pass through the top of the support frame 31, and the two groups of bolts 315 are distributed at positions near the port of the embedded groove 314. One ends of the two groups of bolts 315 are threadedly connected to the crown beam 25, and the detection mechanism 316 is fixedly connected to the bottom of the shaft pin 35.

[0039] The detection mechanism 316 includes a guide cylinder 3161; illustratively, as Figure 6 shown.

[0040] Both ends of the guide cylinder 3161 are open structures, and both ends of the guide cylinder 3161 are movably fitted and connected with guide rods 3162, and one end of two groups of guide rods 3162 is provided with a spherical contact 3163, and a pressure sensor is provided at the center of the central axis of the inner wall of the guide cylinder 3161, and springs are provided on both sides of the pressure sensor, and the two groups of springs are movably contacted and connected with the end of the guide rod 3162, and the spherical contact 3163 is fitted and connected with the outer wall of the crown beam 25 near the right angle.

[0041] Furthermore, a controller is disposed on the inner wall of the cover plate 313 , and the pressure sensor and the servo motor 311 are both electrically connected to the controller.

[0042] Specifically, the support frame 31 is clamped on the top of the crown beam 25, and is sleeved on both sides of the crown beam 25 by using the thickness of the edge side wall of the embedded groove 314, so that the support frame 31 can be compatible with crown beams 25 of different widths, and the ends of the two sets of bolts 315 are threadedly fastened and connected to the top of the crown beam 25, so that the support frame 31 is installed on the top of the crown beams 25 of different widths;

[0043] The spherical contact 3163 can always contact the outer wall connected to the crown beam 25. When the crown beam 25 is offset due to the influence of lateral gravity on the top of the foundation pit 1, the spherical contact 3163 on one side can timely feedback to the guide rod 3162, so that the guide rod 3162 on this side contacts the spring extrusion pressure sensor at the position, so that the pressure sensor transmits the signal to the controller. After analysis by the controller, the servo motor 311 is driven to rotate, so that the screw rod 312 is threadedly connected to the end of the shaft pin 35, and the linkage block 33 slides radially along the hollow sliding cavity 34, so as to further pull the lateral support rods 38 on both sides, so that the limit plates 310 on the lateral support rods 38 on both sides contact the outer wall of the crown beam 25, and in the process of adaptive adjustment of the spring telescopic plate 39, the tension effect of the limit plate 310 after adjustment is completed;

[0044] The support frame 31 can be used at any right-angle position of the crown beam 25. After assembling four groups of support frames 31, the ends of four groups of lateral support rods 38 can be spliced ​​and combined at the same level to form a U-shaped lateral support, which can further enhance the structural strength of the combined installation of steel support and crown beam 25 within the foundation pit range, as well as the all-round detection and adjustment of the inner wall of the foundation pit after the combination.

[0045] The working principle of the installation device for steel support and crown beam in a narrow space foundation pit proposed by the embodiment of the present invention is as follows:

[0046] The support frame 31 is clamped on the top of the crown beam 25, and the thickness of the edge side wall of the embedded groove 314 is used to sleeve on both sides of the crown beam 25, so that the support frame 31 can be compatible with crown beams 25 of different widths, and the ends of the two sets of bolts 315 are threadedly fastened and connected to the top of the crown beam 25, so that the support frame 31 can be installed on the top of the crown beams 25 of different widths;

[0047] The spherical contact 3163 can always contact the outer wall connected to the crown beam 25. When the top of the foundation pit 1 causes the crown beam 25 to deviate due to the influence of lateral gravity, the spherical contact 3163 on one side can timely feedback to the guide rod 3162, so that the guide rod 3162 on this side contacts the spring compression pressure sensor at the position, so that the pressure sensor transmits the signal to the controller. After analysis by the controller, the servo motor 311 is driven to rotate, so that the screw rod 312 is threadedly connected to the end of the shaft pin 35, and the linkage block 33 slides radially along the hollow sliding cavity 34, so as to further pull the lateral support rods 38 on both sides, so that the limit plates 310 on the lateral support rods 38 on both sides contact the outer wall of the crown beam 25, and in the process of adaptive adjustment of the spring telescopic plate 39, the tension effect of the limit plate 310 after adjustment is completed;

[0048] The support frame 31 can be used for any right-angle position of the crown beam 25. After assembling four groups of support frames 31, the ends of four groups of lateral support rods 38 can be spliced ​​and combined at the same level to form a U-shaped lateral support, which can further enhance the structural strength of the combined installation of steel support and crown beam 25 within the foundation pit range, as well as the all-round detection and adjustment of the inner wall of the foundation pit after the combination.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for installing steel supports and crown beams in a narrow space foundation pit, characterized in that: It comprises a foundation pit (1), a support assembly (2) and a steel support assembly (3); the support assembly (2) The steel support assembly (3) is arranged on the inner wall of the foundation pit (1), and is installed at the corner of the inner wall of the foundation pit (1), and the steel support assembly (3) is in close contact with the support assembly (2); The steel support assembly (3) is installed at the inner wall corner of the foundation pit (1) and is used for freely assembling the right-angle connection of the crown beam in the foundation pit in the narrow space of the foundation pit. It is compatible with crown beams of different widths, so that the collapse resistance of the right-angle connection of the crown beam is improved.

2. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 1 is characterized by: The support assembly (2) comprises a construction area (21); a plurality of groups of support piles (22) are arranged on the inner wall of the construction area (21), and the plurality of groups of support piles (22) are longitudinally arranged at equal intervals; and a pile soil cavity (23) is arranged on the inner wall of the construction area (21) and near the top.

3. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 2 is characterized by: A step surface is formed at the connection between the pile-soil cavity (23) and the construction area (21); a pile head (24) is arranged on the top of each of the groups of support piles (22); a crown beam (25) is arranged inside the pile-soil cavity (23); and each of the groups of pile heads (24) is embedded in the crown beam (25); and the crown beam (25) is arranged at a right angle.

4. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 1 is characterized by: The steel support assembly (3) comprises a support frame (31) and a detection mechanism (316); an adjustment cavity (32) is provided on one side wall of the support frame (31); a linkage block (33) is fitted and connected to the inner wall of the adjustment cavity (32); hollow sliding cavities (34) are provided on the top and bottom of the support frame (31), and two groups of the hollow sliding cavities (34) are interconnected with the adjustment cavity (32).

5. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 4 is characterized in that: An axle pin (35) is embedded and installed at the center of the central axis of the linkage block (33), and both ends of the axle pin (35) extend into the hollow sliding cavity (34). External threaded cylinders (36) are embedded and installed on both sides of the outer wall of the linkage block (33), and the connection between the two groups of external threaded cylinders (36) is arranged at a right angle. The outsides of the two groups of external threaded cylinders (36) are sleeved with internal threaded cylinders (37).

6. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 5 is characterized by: The inner wall of the internal threaded tube (37) is fitted with a transverse support rod (38), and one end of the transverse support rod (38) is butted against the end of the external threaded tube (36). The outer wall of the transverse support rod (38) is provided with a spring expansion plate (39), and one end of the spring expansion plate (39) is provided with a limit plate (310), and the limit plate (310) is movably butted against the outer wall of the crown beam (25).

7. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 6, characterized in that: The top of the support frame (31) is also fixedly connected to a servo motor (311), and the output end of the servo motor (311) is transmission-connected to a screw rod (312), and the end of the screw rod (312) that is away from the servo motor (311) is threadedly connected to the shaft pin (35).

8. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 7, characterized in that: The top of the support frame (31) is clamped with a cover plate (313), and the hollow sliding cavity (34), the shaft pin (35), the servo motor (311) and the screw rod (312) are all arranged in the cover plate (313). The bottom of the support frame (31) is provided with an embedded groove (314), and the embedded groove (314) is arranged at a right angle. The embedded groove (314) is clamped with the top of the crown beam (25), and the width of the embedded groove (314) is greater than the width of the crown beam (25).

9. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 4, characterized in that: Two groups of bolts (315) penetrate the top of the support frame (31), and the two groups of bolts (315) are distributed at positions close to the ports of the embedded groove (314), one end of the two groups of bolts (315) are threadedly connected to the crown beam (25), and the detection mechanism (316) is fixedly connected to the bottom of the shaft pin (35).

10. The installation device for steel support and crown beam in a narrow space foundation pit according to claim 4, characterized in that: The detection mechanism (316) comprises a guide cylinder (3161); both ends of the guide cylinder (3161) are open structures, both ends of the guide cylinder (3161) are movably connected with guide rods (3162), and one end of two groups of guide rods (3162) are provided with spherical contacts (3163), a pressure sensor is provided at the center of the central axis of the inner wall of the guide cylinder (3161), springs are provided on both sides of the pressure sensor, and the two groups of springs are movably connected with the ends of the guide rods (3162), and the spherical contacts (3163) are connected with the outer wall of the crown beam (25) near the right angle.

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