A modular multi-device foundation pit excavation support equipment system and method

Abstract

The present application relates to the technical field of foundation pit engineering, specifically, to a modular multi-device foundation pit excavation support equipment system and method thereof, wherein the rotating assembly of the rock breaking device is rotationally connected to the first drive assembly; the cutting assembly of the cutting device is rotationally connected to the second drive assembly; the loading winch rotates, so that the soil of the loading winch of the conveying device is moved to the conveying assembly, and the conveying assembly transports the soil to the dump truck; the grabbing assembly of the segment installation device takes out the prefabricated segments in the storage space and installs the prefabricated segments on the slope; the second turntable of the anchor drilling device is slidably connected to the equipment body, and the drill bit is rotationally connected to the second turntable. The present invention utilizes a rock breaking device to break the surrounding rock, and then utilizes a cutting device to crush the rock. This solves the technical problem in the prior art that over-excavation and under-excavation of the surrounding rock are extremely easy to occur when excavation is carried out by blasting.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit engineering, and in particular to a modular multi-device foundation pit excavation support equipment system and method thereof. Background Art

[0002] A prominent feature of deep foundation pit engineering is that its design and construction, in addition to ensuring the technical rationality and safety of the deep foundation pit itself, must also control its environmental impact. However, currently, foundation pits in hard rock formations are excavated using explosives. During blasting, the energy waves can extend far away, causing significant damage to the surrounding rock mass. Furthermore, in urban areas, blasting can cause vibrations in buildings above ground, impacting residents' lives. Furthermore, the amount of explosives used during blasting is difficult to control, making it extremely easy for over-excavation or under-excavation of the surrounding rock mass to occur. Summary of the Invention

[0003] One of the technical problems to be solved by this application is to overcome the technical problem in the above-mentioned prior art that when excavating foundation pits in hard rock formations by blasting, over-excavation and under-excavation of surrounding rock are extremely likely to occur, and a modular multi-device foundation pit excavation support equipment system and method thereof are provided.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A modular multi-device foundation pit excavation support equipment system includes a first foundation pit excavation support device, wherein the first foundation pit excavation support device includes:

[0006] A rock breaking device, the rock breaking device comprising a first drive assembly and a rotating assembly, the rotating assembly being rotatably connected to the first drive assembly;

[0007] a cutting device, the cutting device comprising a second drive assembly and a cutting assembly, the cutting assembly being rotatably connected to the second drive assembly; and

[0008] The equipment body, the rock breaking device and the cutting device are located on the same side of the equipment body.

[0009] Furthermore, the first foundation pit excavation support equipment further includes a conveying device;

[0010] The conveying device includes a third drive assembly and a loading winch, the loading winch is rotatably connected to the third drive assembly, and the soil on the loading winch is moved to the conveying assembly by the rotation of the loading winch, and the conveying assembly transports the soil to the muck truck;

[0011] Wherein, the loading winch, the rock breaking device and the cutting device are located on the same side of the equipment body.

[0012] Furthermore, the first foundation pit excavation support equipment further includes a segment installation device; the segment installation device includes a first turntable and a grab assembly, the first turntable is slidably connected to the equipment body, and the grab assembly is rotatably connected to the first turntable;

[0013] The equipment body is provided with a storage space, in which prefabricated pipe segments are arranged; the grabbing assembly takes out the prefabricated pipe segments and installs the prefabricated pipe segments on the slope.

[0014] Furthermore, the grabbing component includes:

[0015] a rotating structure, one end of which is rotatably connected to the first turntable, and the other end of which is connected to the first turntable via a telescopic member;

[0016] A gripping structure, one end of which is rotationally connected to the rotating structure, and the other end of which is connected to the rotating structure via a telescopic member.

[0017] Furthermore, the grabbing structure includes a grabbing plate, and a plurality of grabbing hooks are provided on the grabbing plate. Each of the grabbing hooks is correspondingly connected to a jack, and the grabbing hooks are adjusted and set by the jacks.

[0018] Furthermore, the first foundation pit excavation support equipment further includes an anchor drilling device;

[0019] The anchor drilling device includes a second turntable and a drill bit. The second turntable is slidably connected to the equipment body, and the drill bit is rotatably connected to the second turntable.

[0020] Furthermore, the modular multi-device foundation pit excavation support equipment system also includes a second foundation pit excavation support equipment, and the second foundation pit excavation support equipment includes a lifting device, and the lifting device is provided with a lifting grip and a jack, and the jack drives the lifting grip to move, thereby controlling the bending of the lifting grip.

[0021] Furthermore, the second foundation pit excavation support equipment further comprises a crane device, the crane device comprises a crane arm, the crane arm is equipped with a fixed pulley, and the fixed pulley is connected to a suspension wire;

[0022] One end of the crane arm is rotatably connected to a movable part, and one end of the suspension line away from the fixed pulley passes through the movable part and is connected to a hook.

[0023] The present invention also claims protection for a foundation pit excavation and support method, which adopts the modular multi-device foundation pit excavation and support equipment system.

[0024] Further, the following steps are included:

[0025] The first foundation pit excavation support equipment is installed at both ends of the foundation pit, and the second foundation pit excavation support equipment is installed in the middle of the foundation pit. The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are used to level the site; wherein the muck truck is installed at the rear end of each support equipment away from the rock breaking device;

[0026] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are advanced in parallel, and the rock breaking operation is completed by the cooperation of the rock breaking device and the cutting device; wherein the excavated slag is transported to the slag truck by the conveying assembly;

[0027] Each time the first foundation pit excavation support equipment and the second foundation pit excavation support equipment advance a certain distance, the segment installation device hoists the prefabricated segments onto the side walls of the foundation pit and installs the prefabricated segments.

[0028] Installing the anchor rods to the side walls of the foundation pit using the anchor rod drilling and installation device;

[0029] Using the lifting device, a cross brace is installed between the two supported slopes to achieve excavation support for the foundation pit;

[0030] Finally, a crane device is used to lift the first foundation pit excavation and support equipment, the second foundation pit excavation and support equipment, and the dump truck out of the foundation pit.

[0031] The technical solution of the present invention has the following advantages:

[0032] The rock breaking device of the present invention starts to work, breaking the hard rock and soil. Then, the soil that has been disturbed by the rock breaking device and becomes soft is decomposed into fragmented soil by the cutting device. The surrounding rock is broken by the rock breaking device, and then the rock is crushed by the cutting device. The two devices work together to realize the excavation of foundation pit soil, which can solve the problem that blasting and excavation in cities causes vibration of the ground surface and has a great impact on the daily life of residents. At the same time, this equipment system pushes forward in parallel for excavation, and there is no technical problem of over-excavation or under-excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] In order to more clearly illustrate the embodiments of the present application 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1A schematic structural diagram of a first foundation pit excavation support device in an embodiment of the present application is shown;

[0036] Figure 2 A schematic diagram of a top view of the structure of a first foundation pit excavation support device in an embodiment of the present application is shown;

[0037] Figure 3 A schematic structural diagram of a rock breaking device in an embodiment of the present application is shown;

[0038] Figure 4 A schematic diagram of the top view of the rock breaking device in an embodiment of the present application is shown;

[0039] Figure 5 A schematic structural diagram of a cutting device in an embodiment of the present application is shown;

[0040] Figure 6 A schematic diagram of the top view of the cutting device in an embodiment of the present application is shown;

[0041] Figure 7 A schematic structural diagram of a conveying device in an embodiment of the present application is shown;

[0042] Figure 8 A schematic structural diagram of a loading winch in an embodiment of the present application is shown;

[0043] Figure 9 It shows a schematic structural diagram of the shovel body plate in an embodiment of the present application;

[0044] Figure 10 A schematic structural diagram of a grabbing assembly in an embodiment of the present application is shown;

[0045] Figure 11 A schematic diagram of the top view of the grabbing assembly in an embodiment of the present application is shown;

[0046] Figure 12 A schematic structural diagram of a gripping structure in an embodiment of the present application is shown;

[0047] Figure 13 A schematic diagram of a top view of a gripping structure in an embodiment of the present application is shown;

[0048] Figure 14 It shows a structural schematic diagram of the jack installed in the first chute body in an embodiment of the present application;

[0049] Figure 15 A schematic structural diagram of an anchor drilling device according to an embodiment of the present application is shown;

[0050] Figure 16 A schematic diagram of the top view of the anchor drilling device in an embodiment of the present application is shown;

[0051] Figure 17A schematic structural diagram of a second foundation pit excavation support device in an embodiment of the present application is shown;

[0052] Figure 18 A schematic diagram of the top view of the second foundation pit excavation support equipment in an embodiment of the present application is shown;

[0053] Figure 19 A schematic structural diagram of a lifting gripper in an embodiment of the present application is shown;

[0054] Figure 20 A schematic side view of the lifting gripper in an embodiment of the present application is shown;

[0055] Figure 21 It shows a schematic structural diagram of the lifting plate in an embodiment of the present application;

[0056] Figure 22 It shows a schematic structural diagram of the rotation of one side of the lifting plate in an embodiment of the present application;

[0057] Figure 23 It shows a schematic diagram of the structure of the lifting plate rotating on both sides in the embodiment of the present application;

[0058] Figure 24 A schematic diagram of the top view of the lifting gripper in an embodiment of the present application is shown;

[0059] Figure 25 A schematic structural diagram of a crane device in an embodiment of the present application is shown;

[0060] Figure 26 A schematic diagram of the top view of the crane device in an embodiment of the present application is shown;

[0061] Figure 27 A schematic structural diagram of a prefabricated segment in an embodiment of the present application is shown;

[0062] The reference numerals are as follows: 10, equipment body; 11, storage space; 12, prefabricated segments; 121, reserved holes; 122, reserved handles; 13, track; 14, main power system; 20, rock breaking device; 21, first drive assembly; 22, rotating assembly; 23, rock breaking cutting head; 231, rock breaking blade; 24, drive shaft; 25, support; 30, cutting device; 31, second drive assembly; 32, cutting assembly; 33, Water storage assembly; 331, cooling water nozzle; 34, telescopic assembly; 40, conveying device; 41, third drive assembly; 42, loading winch; 421, shovel body plate; 50, conveying assembly; 60, segment installation device; 61, first turntable; 62, grab assembly; 63, rotating structure; 631, first rotating member; 632, first end of first rotating member; 633, second end of first rotating member; 634, second rotating member; 635, second rotating member 636, first end of the first rotating member; 637, second end of the second rotating member; 638, fourth end of the first rotating member; 64, grabbing structure; 641, grabbing plate; 642, grabbing hook; 643, first chute body; 65, telescopic member; 70, anchor drilling device; 71, second turntable; 72, drill bit; 73, rotating motor; 74, hinge; 75, power roller; 76, drilling plate; 77, carrying arm; 771, Second chute body; 80, lifting device; 81, lifting grip; 811, horizontal rotating support; 812, longitudinal rotating connecting piece; 813, mechanical arm; 814, lifting plate; 815, third chute body; 90, jack; 100, crane device; 110, crane support; 111, crane arm; 112, hook; 113, fixed pulley; 114, hanging line; 115, movable part; 116, crane rotating support; 120, dust collector overflow. DETAILED DESCRIPTION

[0063] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0064] like Figures 1 to 6 As shown, an embodiment of the present invention provides a modular multi-device foundation pit excavation support equipment system, including a first foundation pit excavation support equipment, the first foundation pit excavation support equipment including:

[0065] The rock breaking device 20 includes a first driving assembly 21 and a rotating assembly 22, and the rotating assembly 22 is rotatably connected to the first driving assembly 21;

[0066] A cutting device 30, comprising a second drive assembly 31 and a cutting assembly 32, wherein the cutting assembly 32 is rotatably connected to the second drive assembly 31; and

[0067] The equipment body 10 , the rock breaking device 20 and the cutting device 30 are located on the same side of the equipment body 10 .

[0068] In the embodiment, the device body 10 is controlled and operated by a main power system 14 .

[0069] In the embodiment, the rock breaking device 20 is located at the front end of the equipment body 10, the first driving component 21 can be selected as a rock breaking power motor, and the rotating component 22 can be selected as a rock breaking cutting tray.

[0070] In an embodiment, when hard soil and rocks are encountered during foundation pit excavation, a rock breaking power motor drives a rotating shaft to provide power for the rock breaking cutting tray to rotate. The rotation can pre-decompose large blocks and loosen their internal structure.

[0071] In an embodiment, the cutting device 30 and the rock breaking device 20 are located on the same side of the equipment body 10, that is, the cutting device 30 is also located at the front end of the equipment body 10; the second drive component 31 can be selected as a drive motor, and the cutting component 32 can be selected as a cutting head.

[0072] In an embodiment, the driving motor rotates the cutting head, and the cutting device 30 cuts the large blocks into loose soil through the rotation of the cutting head.

[0073] In this embodiment, the rock breaking device 20 starts working to break the hard rock and soil. Then, the soil that has been disturbed and softened by the rock breaking device 20 is decomposed into fragmented soil by the cutting device 30. The surrounding rock is broken by the rock breaking device 20, and then the rock is crushed by the cutting device 30. The two devices work together to realize the excavation of the foundation pit. This can solve the problem that blasting and excavation in cities cause vibration of the ground surface, which has a great impact on the daily life of residents. At the same time, this equipment system pushes forward in parallel for excavation, and there is no technical problem of over-excavation or under-excavation.

[0074] like Figures 3 and 4As shown, in this embodiment, the rock-breaking cutting tray is equipped with a rock-breaking cutting head 23, on which multiple rock-breaking blades 231 are evenly distributed. Powered by a rock-breaking power motor, the rock-breaking blades 231 rotate. The rotation of the rock-breaking blades 231, combined with the normal stress transmitted to the hard soil and rock blocks by the shaft, can pre-break up large blocks, loosening their internal structure and achieving the purpose of rock crushing. A drive shaft 24 is connected to one end of the rock-breaking cutting tray of the rock-breaking device 20. The rock-breaking cutting tray is rotatably connected to the rock-breaking power motor via the drive shaft 24. A support 25 is mounted on the end of the drive shaft 24 near the rock-breaking power motor, which secures the rock-breaking device 20 to the front end of the device body 10.

[0075] like Figures 5 and 6 As shown, in this embodiment, the cutting device 30 also includes a water storage component 33, which is provided with a cooling water spray outlet 331, and one end of the water storage component 33 is connected to the cutting component 32; wherein, the cooling water spray outlet 331 is arranged close to the cutting component 32.

[0076] In an embodiment, the water storage component 33 may be a water tank.

[0077] In an embodiment, the cutting device 30 can atomize the water in the water tank through the cooling water nozzle 331 and spray it onto the cutting head, thereby ensuring that the temperature of the cutting device 30 is within a controllable range when it is continuously working.

[0078] like Figures 5 and 6 As shown, in this embodiment, the cutting device 30 further includes a telescopic component 34 , and the telescopic component 34 is connected to the other end of the water storage component 33 .

[0079] In an embodiment, the telescopic assembly 34 can adjust the horizontal position of the cutting head by controlling the internal hydraulic cylinder and the external telescopic structure thereof to adapt to different working requirements.

[0080] like Figure 1 and Figure 2 as well as Figures 7 to 9 As shown, in this embodiment, the first foundation pit excavation support equipment further includes a conveying device 40;

[0081] The conveying device 40 includes a third drive assembly 41 and a loading winch 42. The loading winch 42 is rotatably connected to the third drive assembly 41. The loading winch 42 rotates to move the soil on the loading winch 42 to the conveying assembly 50. The conveying assembly 50 transports the soil to the muck truck.

[0082] The loading winch 42 , the rock breaking device 20 , and the cutting device 30 are located on the same side of the equipment body 10 .

[0083] In this embodiment, the conveying device 40 is located within the main body 10 of the device. The conveying assembly 50 includes a conveyor belt and a conveyor power motor. The third drive assembly 41 can be a winch drive motor. The soil naturally falls onto the loading winch 42. The winch drive motor provides power to the loading winch 42. The rotational force of the loading winch 42 throws the soil from the loading winch 42 onto the conveyor belt, which transports the soil to the dump truck. The conveyor belt then transports the soil to the dump truck behind the main body 10. The conveyor power motor provides power for the conveyor belt.

[0084] In this embodiment, the crushed rocks can be transported away by the conveying device 40 .

[0085] like Figures 7 to 9 As shown, in this embodiment, the driving shaft of the winch drive motor is equipped with a gear that meshes with the gear on the loading winch 42 for transmission. The loading winch 42 is equipped with a shovel body plate 421 for storing soil. The rotation of the loading winch 42 drives the shovel body plate 421 to rotate, and the rotational force causes the soil in the shovel body plate 421 to be thrown onto the conveying component 50, and finally the soil is transported to the dump truck behind the equipment body 10 through the conveyor belt in the conveying component 50.

[0086] like Figures 3 and 4 As shown, in this embodiment, the first foundation pit excavation support equipment further includes a segment installation device 60; the segment installation device 60 includes a first turntable 61 and a grab assembly 62, the first turntable 61 is slidably connected to the equipment body 10, and the grab assembly 62 is rotatably connected to the first turntable 61;

[0087] The equipment body 10 is provided with a storage space 11 , in which a prefabricated pipe segment 12 is arranged; the grabbing assembly 62 takes out the prefabricated pipe segment 12 and installs the prefabricated pipe segment 12 on the slope.

[0088] In the embodiment, a track 13 is provided on the equipment body 10, and the first turntable 61 slides on the equipment body 10 along the track 13. Since the grabbing assembly 62 is rotatably connected to the first turntable 61, that is, the grabbing assembly 62 can rotate 360° relative to the first turntable 61, this structural design is conducive to the grabbing assembly 62 taking out the prefabricated pipe segments 12 in the storage space 11 and installing the prefabricated pipe segments 12 on the slope.

[0089] In this embodiment, the prefabricated segments 12 can be installed on the slope through the segment installation device 60, thereby supporting the foundation pit and ensuring the safety of the foundation pit project.

[0090] like Figure 27 As shown, in this embodiment, the prefabricated pipe segment 12 is provided with a hanging structure, and the hanging structure can be selected as a reserved hole 121, that is, the prefabricated pipe segment 12 is opened with a reserved hole 121.

[0091] In this embodiment, the hanging structure can also be selected as a reserved handle 122; that is, the anchor rod hangs the prefabricated pipe segment 12 on the slope through the reserved hole 121 or the reserved handle 122 of the prefabricated pipe segment 12, thereby supporting the slope.

[0092] like Figures 10 and 11 As shown, in this embodiment, the grabbing component 62 includes:

[0093] The rotating structure 63 has one end that is rotatably connected to the first rotating disk 61 , and the other end that is connected to the first rotating disk 61 via a telescopic member 65 .

[0094] The grabbing structure 64 has one end rotatably connected to the rotating structure 63 , and the other end of the grabbing structure 64 is connected to the rotating structure 63 via a telescopic member 65 .

[0095] In the embodiment, one end of the rotating structure 63 is rotatably connected to the first turntable 61 , and the other end of the rotating structure 63 is connected to the first turntable 61 through a telescopic member 65 , that is, the rotating structure 63 can be driven to rotate along the first turntable 61 through the telescopic member 65 .

[0096] In the embodiment, one end of the grasping structure 64 is rotatably connected to the rotating structure 63 , and the other end of the grasping structure 64 is connected to the rotating structure 63 via a telescopic member 65 , that is, the telescopic member 65 can drive the grasping structure 64 to rotate along the rotating structure 63 .

[0097] In this embodiment, the grabbing structure 64 can move in different directions and angles under the joint action of the first turntable 61 and the rotating structure 63, so that the prefabricated pipe segment 12 can be compacted on the slope after the angle and direction between the prefabricated pipe segment 12 and the slope are adjusted and verified.

[0098] like Figures 12 to 15 As shown, in this embodiment, the rotating structure 63 includes:

[0099] The first rotating member 631 has a first end 632 that is rotatably connected to one end of the first rotating disk 61 , and a second end 633 of the first rotating member is connected to the other end of the first rotating disk 61 via a telescopic member 65 .

[0100] The second rotating member 634, the first end 635 of the second rotating member is rotatably connected to the third end 636 of the first rotating member, the second end 637 of the second rotating member is connected to the fourth end 638 of the first rotating member through the telescopic member 65, and the third end 639 of the second rotating member is rotatably connected to the grasping structure 64.

[0101] In the embodiment, the first end 632 of the first rotating member is rotatably connected to the first turntable 61, and the second end 633 of the first rotating member is connected to the other end of the first turntable 61 through the telescopic member 65, that is, the first rotating member 631 can be driven to rotate along the first turntable through the telescopic member 65.

[0102] In an embodiment, the first end 635 of the second rotating member is rotatably connected to the third end 636 of the first rotating member, and the second end 637 of the second rotating member is connected to the fourth end 638 of the first rotating member through the telescopic member 65, that is, the second rotating member 634 can be driven to rotate along the first rotating member 631 through the telescopic member 65.

[0103] In this embodiment, the first rotating member 631 and the second rotating member 634 rotate together, so that the grasping structure 64 can be rotated in different directions and angles under the joint action of the first rotating member 631 and the second rotating member 634. After the angle and direction of the prefabricated pipe segment 12 and the slope are adjusted and verified, the prefabricated pipe segment 12 is compacted on the slope.

[0104] like Figures 12 to 15 As shown, in this embodiment, the grabbing structure 64 includes a grabbing plate 641 , and a plurality of grabbing hooks 642 are provided on the grabbing plate 641 . Each grabbing hook 642 is correspondingly connected to a jack 90 , and the grabbing hook 642 is adjusted and set by the jack 90 .

[0105] In this embodiment, to maintain the stability of the excavated pit slope during the system's advancement, the slope must be supported. The gripping plate 641 of the gripping structure 64 removes the precast segment 12 from the rear of the vehicle and installs it on the slope. Each gripping hook 642 can be adjusted in direction using an independent hydraulic jack, and the gripping assembly 62 can be adjusted longitudinally by controlling the extension and retraction of the hydraulic jacks. Once the angle and direction between the precast segment and the slope are verified, the gripping assembly 62 is retracted and expanded by the hydraulic cylinder within the gripping structure 64, compacting the precast segment 12 onto the slope.

[0106] like Figures 12 to 15 As shown, in this embodiment, the grabbing plate 641 is provided with a first sliding groove body 643 , and the grabbing plate 641 is slidably connected to the first sliding groove body 643 via a jack 90 .

[0107] In an embodiment, the jack 90 can slide on the first chute body 643 to adjust the position and direction of the grab plate 641 .

[0108] like Figures 12 to 15 As shown, in this embodiment, the first foundation pit excavation support equipment further includes an anchor drilling device 70;

[0109] The anchor drilling device 70 includes a second turntable 71 and a drill bit 72 . The second turntable 71 is slidably connected to the equipment body 10 , and the drill bit 72 is rotatably connected to the second turntable 71 .

[0110] In the embodiment, the drill bit 72 slides on the equipment body 10 along the track 13. Since the drill bit 72 is rotatably connected to the second turntable 71, that is, the drill bit 72 can rotate 360° relative to the second turntable 71, this structural design is conducive to the anchor drilling device 70 to install the anchor while drilling holes on the slope. The anchor hangs the prefabricated pipe segment 12 on the slope, thereby supporting the slope.

[0111] In the embodiment, the first turntable 61 and the second turntable 71 can move horizontally forward and backward on the track 13, and the first turntable 61 and the second turntable 71 can rotate horizontally. The track 13 is connected to the device body 10 by bolts and is placed on both sides of the device body 10.

[0112] This embodiment utilizes the anchor drilling device 70 to install corresponding anchors in the foundation pit, so that the prefabricated pipe segments 12 and the anchors can jointly support the foundation pit, thereby improving work efficiency and ensuring the safety of the foundation pit project.

[0113] like Figures 16 and 17 As shown, in this embodiment, one end of the drill bit 72 is connected to a rotary motor 73, which drives the drill bit 72 to rotate; the rotary motor 73 is connected to a hinge 74, and the hinge 74 is provided with a power roller 75 at one end away from the rotary motor 73, which works in conjunction with the hinge 74 and drives the drill bit 72 to move.

[0114] The anchor drilling device 70 also includes a drilling plate 76, a hinge 74 is arranged on the drilling plate 76, and a load-bearing arm 77 is provided at one end of the drilling plate 76 away from the hinge 74. One end of the load-bearing arm 77 is rotatably connected to the drilling plate 76, and the other end of the load-bearing arm 77 is connected to the drilling plate 76 through a jack 90, and the jack 90 drives the drilling plate 76 to rotate.

[0115] In an embodiment, the end of the carrying arm 77 away from the drilling plate 76 is connected to the second slide trough body 771, and the second slide trough body 771 is provided with a jack 90. ​​One end of the jack 90 is connected to the second slide trough body 771, and the other end of the jack 90 is connected to the carrying arm 77. The jack 90 drives the carrying arm 77 to slide along the second slide trough body 771.

[0116] In an embodiment, one end of the second turntable 71 is rotatably connected to the second slide chute body 771, and a jack 90 is provided at the other end of the second turntable 71. The jack 90 is connected to the second slide chute body 771 away from the end of the second turntable 71, and the jack 90 drives the second slide chute body 771 to rotate relative to the second turntable 71.

[0117] In this embodiment, the anchor drilling device 70 is used to drill a hole in the slope and simultaneously install the anchor. The power roller 75 and hinge 74 provide driving force for the drill bit 72 to drill the hole. The rotary motor 73 provides torque to rotate the drill bit 72. The jack 90 allows the support arm 77 to slide horizontally within the second chute 771. The jack 90 can also lift the drilling plate 76 longitudinally. The jack 90 can also lift the second chute 771 longitudinally.

[0118] The numerous movable joint structures of the anchor drilling and installation device 70 of this embodiment work together to drill holes and install anchors at appropriate locations on the slope.

[0119] like Figures 18 to 25 As shown, in this embodiment, the second foundation pit excavation support equipment includes a lifting device 80, and the lifting device 80 is provided with a lifting grip 81 and a jack 90. ​​The jack 90 drives the lifting grip 81 to move, thereby controlling the bending of the lifting grip 81.

[0120] In an embodiment, the lifting gripper 81 includes a transverse rotating support 811, a longitudinal rotating connection 812 and a robotic arm 813. One end of the longitudinal rotating connection 812 is rotatably connected to the transverse rotating support 811, and the other end is rotatably connected to the robotic arm 813. The end of the robotic arm 813 away from the longitudinal rotating connection 812 is connected to a lifting plate 814. A jack 90 is connected between the robotic arm 813 and the transverse rotating support 811, which can control the rotation angle of the longitudinal rotating connection 812 and the robotic arm 813.

[0121] Among them, the lifting plate 814 is provided with a jack 90 and a third chute body 815. The jack 90 moves correspondingly in the third chute body 815, which can control the bending of the lifting plate 814 to better hold the beam tightly and support the beam between the soil on both sides.

[0122] like Figures 25 to 26 As shown, in this embodiment, the second foundation pit excavation support equipment also includes a crane device 100, and the crane device 100 includes a crane arm 111. The crane arm 111 is equipped with a fixed pulley 113, and the fixed pulley 113 is connected to a suspension line 114; one end of the crane arm 111 is rotatably connected to a movable part 115, and the end of the suspension line 114 away from the fixed pulley 113 is passed through the movable part 115 and connected to a hook 112.

[0123] In an embodiment, the crane device 100 includes a crane support 110, and one end of the crane arm 111 is rotatably connected to the crane support 110; wherein, one end of the jack 90 is connected to the crane support 110, and the other end of the jack 90 is connected to the crane arm 111, that is, the crane arm 111 is driven to rotate along the crane support 110 by the jack 90.

[0124] In an embodiment, the other end of the crane arm 111 is rotatably connected to a movable part 115; wherein, one end of the jack 90 is connected to the crane arm 111, and the other end of the jack 90 is connected to the movable part 115, that is, the movable part 115 is driven to rotate along the crane arm 111 by the jack 90.

[0125] In the embodiment, a fixed pulley 113 is installed on the crane arm 111, and the fixed pulley 113 is equipped with a suspension wire 114. One end of the suspension wire 114 is connected to the fixed pulley 113, and the other end of the suspension wire 114 passes through a movable part 115 and is connected to a hook 112. The movable part 115 can drive the hook 112 to rotate, that is, the movement of the hook 112 can not only be controlled by the rotation of the fixed pulley 113, but also by the rotation of the movable part 115.

[0126] In the embodiment, the crane support 110 is mounted on the crane rotating support 116, so that the crane device 100 can rotate in all directions, and the device has strong flexibility.

[0127] like Figure 17 As shown, in this embodiment, the second foundation pit excavation support equipment further includes a dust removal overflow device 120, which can be used to absorb a large amount of dust.

[0128] The second foundation pit excavation and support equipment also includes an equipment body, on which a rock breaking device 20, a cutting device 30 and a conveying device 40 are installed. In the early stage, the equipment body breaks and crushes the surrounding rock together with the first foundation pit excavation and support equipment, and the crushed rock is transported away; that is, the rock breaking device 20 of the second foundation pit excavation and support equipment breaks the surrounding rock, and then uses the cutting device 30 to crush the rock, and finally transports the crushed rock away through the conveying device 40, and then uses the pipe segment installation device 60 and the anchor drilling device 70 of the first foundation pit excavation and support equipment to support the foundation pit with prefabricated pipe segments 12 and anchor rods. Finally, since the deep foundation pit is excavated in layers, after the support work of one layer of the foundation pit is completely completed, in order to prevent the slope support that has been prepared from falling off when the next layer is excavated, it needs to be reinforced. The lifting device 80 is used to better support the beam and support the beam between the soil on both sides, which plays a very good consolidation role in the slope support. In addition, the crane device 100 can flexibly lift the components to be lifted onto the lifting device 80. The crane device 100 lifts the support onto the lifting device 80, and then the lifting device 80 installs the support beams between the prefabricated segments 12, completing the entire workflow.

[0129] The embodiment of the present invention further provides a foundation pit excavation support method, which adopts a modular multi-device foundation pit excavation support equipment system, including the following steps:

[0130] A first foundation pit excavation support device is set at both ends of the foundation pit, and a second foundation pit excavation support device is set in the middle of the foundation pit. The first foundation pit excavation support device and the second foundation pit excavation support device are used to level the site; wherein, a muck truck is set at the rear end of each support device away from the rock breaking device 20;

[0131] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are advanced in parallel, and the rock breaking operation is completed by the cooperation of the rock breaking device 20 and the cutting device 30; wherein, the excavated slag is transported to the slag truck by the conveying assembly 50;

[0132] Each time the first foundation pit excavation support equipment and the second foundation pit excavation support equipment advance a certain distance, the segment installation device 60 hoists the prefabricated segment 12 onto the side wall of the foundation pit and installs the prefabricated segment 12;

[0133] The anchor rods are installed on the side walls of the foundation pit using the anchor rod drilling and installation device 70.

[0134] Using the lifting device 80, a cross brace is installed between the two supported slopes to achieve excavation support for the foundation pit;

[0135] Finally, the crane device 100 is used to lift the first foundation pit excavation and support equipment, the second foundation pit excavation and support equipment, and the dump truck out of the foundation pit.

[0136] Step 1: Before excavation, determine the excavation plan based on geological and hydrological data and the conditions of nearby buildings. Determine the excavation sequence, width, and depth based on the specified dimensions. Divide the foundation pit into layers longitudinally, and design the excavation depth for each layer.

[0137] In step 1, the foundation pit is layered according to the design requirements and mechanical dimensions. In this embodiment, the foundation pit is designed to be 20m wide and 12m deep. It is excavated in three layers in the depth direction, and the excavation depth of each layer is 4m.

[0138] The purpose of step 1 of this embodiment is to divide the foundation pit into layers to facilitate the entry of construction equipment such as dump trucks, first foundation pit excavation and support equipment, and second foundation pit excavation and support equipment, as well as the selection of prefabricated pipe segments.

[0139] Step 2: Measure and lay out the foundation construction, determine the position of the retaining piles, and drive a circle of retaining piles along the excavation range of the foundation pit.

[0140] In step 2, retaining piles can be arranged in rows, reinforced cement-soil piles, or hard-interlocked rows. Retaining pile sizes also vary, and the specific selection should be determined based on the site's hydrogeological conditions. In most cases, the retaining piles are 800 mm in diameter and 1600 mm apart.

[0141] The purpose of driving the retaining piles in step 2 of this embodiment is to block the earthwork of the road outside the foundation pit after the foundation pit is excavated, thereby protecting the construction safety inside the foundation pit. At the same time, the retaining piles also have the effect of stopping water, which can prevent the external water from flowing into the foundation pit.

[0142] Step 3: Use an excavator to carve out an access area for the dump truck, the first pit excavation support equipment, and the second pit excavation support equipment. Calculate the dimensions of the access area based on the designed width of the pit. For example, in this construction project, the designed width of the pit is 20m, and excavation is performed in three layers. Based on the size requirements of the access equipment, the integrated pit construction equipment, and the dump truck, the access area is designed to be 20m x 20m.

[0143] In step 3 of this embodiment, excavation of the initial working surface is carried out in order to achieve a reasonable arrangement of equipment and ensure that subsequent machinery can enter the site in an orderly manner.

[0144] Step 4: Place an end bracket at the beginning of the foundation pit excavation to support the initial section with prefabricated segments and anchor rods.

[0145] In step 4, the precast segments are rectangular, measuring 2m x 1.5m x 0.15m, with a height of 2m, a width of 1.5m, and a thickness of 0.15m. Each segment has nine anchor holes and is installed starting from the bottom of the foundation pit.

[0146] In step 4 of this embodiment, the initial cross section is supported first to prevent the foundation pit from collapsing, following the principle of supporting first and then excavating.

[0147] Step 5: Construction equipment is brought in sequentially. Several first-stage excavation support devices are set up at each end of the foundation pit, and several second-stage excavation support devices are set up in the middle of the foundation pit. The specific number of devices depends on the width of the foundation pit. In this embodiment, two first-stage excavation support devices and two second-stage excavation support devices are used. The first and second-stage excavation support devices are then used to level the site.

[0148] In step 5, according to the pit design requirements, four excavation support devices are installed in the pit, arranged parallel to the construction direction. One first excavation support device is installed at each end of the pit, and two second excavation support devices are placed between the two first excavation support devices. A dump truck is positioned behind each device, below the conveyor belt of the conveying device 40, to collect soil and debris at any time.

[0149] In step 5 of this embodiment, the excavation of the entry area by an excavator can only be a preliminary leveling. The use of the first foundation pit excavation support equipment and the second foundation pit excavation support equipment can well level the site, which not only ensures the smooth operation of the construction equipment entering the site, but also provides a horizontal working surface for the construction equipment to work in the foundation pit excavation area.

[0150] Step 6: The first and second excavation support equipment advance in parallel, completing the rock-breaking operation. Excavated debris is transported via a conveyor belt to a dump truck at the rear. Once fully loaded, the debris is directly transported out of the pit and deposited at a designated site.

[0151] In this embodiment, step 6 is performed simultaneously by two second foundation pit excavation support devices and two first foundation pit excavation support devices. This is primarily to facilitate simultaneous construction of the equipment, facilitate the subsequent installation of prefabricated segments for the foundation pit slope, and facilitate the horizontal support of the lifting device 80 between the two sides of the soil. The muck truck is used to collect excavated soil at any time and then transport it to a designated location.

[0152] Step 7: As rock breaking and earth excavation proceed, the construction machinery advances a certain distance in the horizontal direction, and then the prefabricated pipe segments are hoisted to the side walls of the foundation pit through the prefabricated pipe segment installation device 60 in the excavation system, and the prefabricated pipe segments are installed.

[0153] In step 7 of this embodiment, the purpose of compacting the prefabricated segments is to increase the mechanical bite force between the soil and the prefabricated segments and to increase the friction force to resist the gravity of the prefabricated segments themselves.

[0154] Step 8: The anchor drilling and installation equipment 70 in the construction equipment completes the drilling, anchor insertion, grouting, tensioning, and locking processes in sequence to install the anchor.

[0155] In steps 7 and 8, ensure that the spacing and positions of the anchor holes correspond to the positions of the precast segments' reserved holes. Also, ensure that the precast segments are compacted during installation.

[0156] In step 8 of this embodiment, the purpose of installing anchor rods is to reinforce and stabilize the surrounding rock and realize active support of the foundation pit.

[0157] Step 9: Use a lifting device to install cross braces between the two supported slopes to reinforce the prefabricated segments.

[0158] In step 9, attention should be paid to the compaction of the cross bracing positions at the junctions between the bottom precast segments and other precast segments. It is also worth noting that during the third layer of slope support, since the precast segments are directly in contact with the ground and no further excavation is required, cross bracing is not required between the precast segments.

[0159] In step 9 of this embodiment, the purpose of placing the steel pipe cross brace is to apply normal force to the prefabricated pipe segment, increase the friction between the prefabricated pipe segment and the soil, and reduce the dependence of the prefabricated pipe segment on the anchor rod.

[0160] Step 10: The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance. Every time they advance a certain distance, steps 7 to 9 are repeated. The prefabricated pipe segment installation device 60, anchor drilling device 70 and lifting device 80 are used to install cross braces between the two supported slopes.

[0161] In step 10, the first and second excavation support equipment continue to advance in parallel, repeating steps 7 to 9 each time they advance a certain distance until the excavation of this layer is completed. The distance of each advance is 4 meters.

[0162] Step 11: After excavation of this layer is completed, prefabricated segments are installed in the foundation pit using the prefabricated segment installation device 60, and anchors are installed using the anchor drilling and installation device 70 to achieve support for the first layer;

[0163] In step 11, the newly formed vertical section of the foundation pit is installed with prefabricated segments by the prefabricated segment installation device 60, and anchors are installed by the anchor drilling device 70 to support the plane, and the steel pipe cross braces of this layer are also removed.

[0164] Among them, in step 11, before excavating the next layer, the steel pipe cross brace is dismantled in order to use it to support the prefabricated pipe segments of the next layer for recycling.

[0165] Step 12: Repeat steps 3 to 11, excavating layer by layer and supporting section by section until the entire foundation pit is excavated;

[0166] In step 12: repeat steps 3 to 11, excavating the foundation pit layer by layer and supporting it section by section until the entire foundation pit is excavated.

[0167] Step 13: Use the crane device 100 to lift the construction equipment out of the foundation pit. In step 13: Use the crane device 100 to lift the muck truck, the second foundation pit excavation support equipment and the second foundation pit excavation support equipment out of the foundation pit to recover the equipment.

[0168] The method of the present invention adopts a parallel advancement method, and there is no over-excavation or under-excavation during the excavation of the foundation pit. At the same time, the slope is neat, reducing or even avoiding the phenomenon of secondary construction or even rework. The design of integrated site leveling and slag discharge coordinates the orderly advancement of various construction organizations. It reduces the disturbance of the surrounding original soil and the troubles to residents. In addition, the support method has been changed from sprinkler support to prefabricated pipe segment support, realizing the automated construction of foundation pit excavation and support, systematizing the construction process, and coordinating the construction organization management. It effectively ensures the stability of the foundation pit slope and construction safety.

[0169] In summary, the present invention first starts construction of the entire system at a pre-planned location, correctly arranges the number and type of vehicle bodies according to the actual working surface, arranges two first foundation pit excavation support devices on the two side slopes that need support, and arranges two first foundation pit excavation support devices in the middle that needs support; adjusts the direction, starts the device, and the rock breaking device 20 starts working to break the hard rock and soil. The soil that has been disturbed and softened by the rock breaking device is then broken down into fragmented soil by the cutting device 30 and falls into the loading winch. It is then transported to the dump truck behind the vehicle through the conveying assembly. The anchor drilling device is controlled and adjusted to the appropriate position, responsible for drilling holes and installing anchors on the newly excavated foundation pit slope. The grabbing assembly 62 then takes out the prefabricated pipe segments 12 from the storage space 11 and installs the prefabricated pipe segments 12 on the slope. This completes the initial support. It is best to use the crane device 100 of the second foundation pit excavation support to hoist the support onto the lifting device 80, and then the lifting device 80 installs the supporting beams between the prefabricated pipe segments 12 to complete the support reinforcement work.

[0170] The present invention utilizes a rock breaking device 20 to break the surrounding rock, then utilizes a cutting device 30 to crush the rock, and finally transports the crushed rock away through a conveying device 40. At the same time, the equipment system utilizes a segment installation device 60 to be installed in the foundation pit for support, and utilizes an anchor drilling device 70 to install corresponding anchors in the foundation pit, so that the prefabricated segments 12 and the anchors jointly support the foundation pit, truly realizing the integration, mechanization and automation of excavation, slag removal and support, thereby improving work efficiency and ensuring the safety of the foundation pit project.

[0171] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0172] The above are merely specific embodiments of the present application to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather is intended to conform to the widest scope consistent with the principles and novel features of the present application.

Claims

1. A modular multi-device foundation pit excavation support equipment system, characterized in that: The invention comprises a first foundation pit excavation support device and a second foundation pit excavation support device, wherein the first foundation pit excavation support device comprises: A rock breaking device (20), the rock breaking device (20) comprising a first driving assembly (21) and a rotating assembly (22), the rotating assembly (22) being rotationally connected to the first driving assembly (21); A cutting device (30), the cutting device (30) comprising a second drive assembly (31) and a cutting assembly (32), the cutting assembly (32) being rotatably connected to the second drive assembly (31); and The equipment body (10), the rock breaking device (20) and the cutting device (30) are located on the same side of the equipment body (10); A pipe segment installation device (60); the pipe segment installation device (60) comprises a first turntable (61) and a grab assembly (62), wherein the first turntable (61) is slidably connected to the equipment body (10), and the grab assembly (62) is rotatably connected to the first turntable (61); The equipment body (10) is provided with a storage space (11), and a prefabricated pipe segment (12) is provided in the storage space (11); the grabbing assembly (62) takes out the prefabricated pipe segment (12) and installs the prefabricated pipe segment (12) on the slope; The second foundation pit excavation support equipment includes a lifting device (80), wherein the lifting device (80) is provided with a lifting grip (81) and a jack (90), and the jack (90) drives the lifting grip (81) to move, thereby controlling the bending of the lifting grip (81); The second foundation pit excavation support equipment further comprises an equipment body, on which a rock breaking device (20), a cutting device (30) and a conveying device (40) are installed.

2. The modular multi-device foundation pit excavation support equipment system according to claim 1 is characterized in that: The first foundation pit excavation support equipment further includes a conveying device (40); The conveying device (40) includes a third driving assembly (41) and a loading winch (42), wherein the loading winch (42) is rotatably connected to the third driving assembly (41), and the soil on the loading winch (42) is moved to the conveying assembly (50) by the rotation of the loading winch (42), and the conveying assembly (50) transports the soil to the muck truck; The loading winch (42), the rock breaking device (20), and the cutting device (30) are located on the same side of the equipment body (10).

3. The modular multi-device foundation pit excavation support equipment system according to claim 2, characterized in that: The grabbing assembly (62) comprises: A rotating structure (63), one end of the rotating structure (63) is rotatably connected to the first rotating disk (61), and the other end of the rotating structure (63) is connected to the first rotating disk (61) via a telescopic member (65); A gripping structure (64), one end of which is rotationally connected to the rotating structure (63), and the other end of which is connected to the rotating structure (63) via a telescopic member (65).

4. The modular multi-device foundation pit excavation support equipment system according to claim 3, characterized in that: The grabbing structure (64) comprises a grabbing plate (641), and a plurality of grabbing hooks (642) are provided on the grabbing plate (641). Each of the grabbing hooks (642) is correspondingly connected to a jack (90), and the grabbing hooks (642) are adjusted and set by the jack (90).

5. The modular multi-device foundation pit excavation support equipment system according to claim 4, wherein the first foundation pit excavation support equipment further comprises an anchor drilling device (70); The anchor drilling device (70) comprises a second turntable (71) and a drill bit (72); the second turntable (71) is slidably connected to the equipment body (10); and the drill bit (72) is rotatably connected to the second turntable (71).

6. The modular multi-device foundation pit excavation support equipment system according to claim 5, characterized in that: The second foundation pit excavation support equipment further comprises a crane device (100), the crane device (100) comprising a crane arm (111), the crane arm (111) being equipped with a fixed pulley (113), and the fixed pulley (113) being connected to a suspension wire (114); One end of the crane arm (111) is rotatably connected to a movable part (115), and one end of the suspension line (114) away from the fixed pulley (113) passes through the movable part (115) and is connected to a suspension hook (112).

7. A foundation pit excavation support method, characterized in that: The modular multi-device foundation pit excavation support equipment system described in claim 6 is adopted.

8. The foundation pit excavation and supporting method according to claim 7, characterized in that: The steps include: The first foundation pit excavation support equipment is arranged at both ends of the foundation pit, and the second foundation pit excavation support equipment is arranged in the middle of the foundation pit, and the first foundation pit excavation support equipment and the second foundation pit excavation support equipment are used to level the site; wherein the muck truck is arranged at the rear end of each support equipment away from the rock breaking device (20); The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are advanced in parallel, and the rock breaking operation is completed by the cooperation of the rock breaking device (20) and the cutting device (30); wherein the slag produced by the excavation is transported to the slag truck through the conveying assembly (50); Each time the first foundation pit excavation support equipment and the second foundation pit excavation support equipment advance a certain distance, the segment installation device (60) hoists the prefabricated segment (12) onto the side wall of the foundation pit and installs the prefabricated segment (12); The anchor rod is installed on the side wall of the foundation pit by the anchor rod drilling and installing device (70); Using the lifting device (80), the installation of cross braces between the two slopes of the support, to achieve support for the excavation of the foundation pit; Finally, the first foundation pit excavation and support equipment, the second foundation pit excavation and support equipment, and the muck truck are lifted out of the foundation pit using a crane device (100).

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