Modular multi-device foundation pit excavation support method and equipment system thereof

Abstract

The application relates to the technical field of foundation pit engineering, in particular to a modular multi-device foundation pit excavation supporting method and an equipment system thereof. The first foundation pit excavation supporting device and the second foundation pit excavation supporting device are pushed in parallel to complete a rock breaking operation; a segment installation device of the first foundation pit excavation supporting device hoists a prefabricated segment to the side wall of the foundation pit; an anchor rod drilling and installation device of the first foundation pit excavation supporting device is used for installing an anchor rod; the first foundation pit excavation supporting device and the second foundation pit excavation supporting device continue to push forward, and the prefabricated segment and the anchor rod are installed every time a distance is pushed forward until the excavation is completed. The application truly realizes the integrated construction of rock breaking, slag removal and supporting. The technical problem of low automation and mechanization degree of the prior art is solved.

Description

TECHNICAL FIELD

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

[0002] At present, the degree of automation and mechanization of foundation pit engineering is low, and a large number of workers are still involved in construction. Some workers cannot strictly follow the construction specifications, which leads to unguaranteed construction quality and often causes foundation pit accidents. In addition, the closure of the foundation pit support is often supported by shotcrete, but the concrete needs a certain time to reach a certain strength, which will affect the progress of the project.

[0003] With the continuous advancement of industrialization, more and more projects, especially underground projects, require more stringent requirements for foundation pit construction, especially the application of intelligence in all aspects. Foundation pit construction also urgently needs an intelligent and automated construction process. SUMMARY

[0004] One of the technical problems to be solved by the present application is to overcome the technical problem of low degree of automation and mechanization of foundation pit engineering in the prior art, and to provide a modular multi-device foundation pit excavation support method and an equipment system thereof.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A modular multi-device foundation pit excavation support method comprises the following steps:

[0007] A excavator excavates a landing area of a foundation pit excavation support equipment in the foundation pit;

[0008] First foundation pit excavation support equipment is arranged at both ends of the foundation pit, and second foundation pit excavation support equipment is arranged at the middle position of the foundation pit, and the site is leveled by using the first foundation pit excavation support equipment and the second foundation pit excavation support equipment;

[0009] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are pushed in parallel to complete the rock breaking operation;

[0010] The prefabricated segment is hoisted to the side wall of the foundation pit by the segment mounting device of the first foundation pit excavation support equipment, and the prefabricated segment is installed;

[0011] The anchor rod is installed by the anchor rod drilling device of the first foundation pit excavation support equipment;

[0012] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance, and the prefabricated segment and the anchor rod are installed every time they advance a distance, until the first layer of excavation is completed.

[0013] After the first layer is excavated, the precast pipe piece is installed in the foundation pit by the precast pipe piece installation device, the anchor rod is installed by the anchor rod drilling and installation device, and the support of the first layer is realized;

[0014] The excavation and support method of the first layer is repeated, and the excavation and support are carried out layer by layer until the entire foundation pit is excavated.

[0015] Further, the first foundation pit excavation and support equipment and the second foundation pit excavation and support equipment are provided with a muck car at the end away from the rock breaking device; wherein the muck generated by excavation is transported into the muck car through the conveying assembly of the first foundation pit excavation and support equipment and / or the conveying assembly of the second foundation pit excavation and support equipment.

[0016] Further, after the excavator excavates the access area of the construction equipment in the foundation pit, the precast pipe piece and the anchor rod are supported for the initial cross section of the foundation pit.

[0017] Further, after the entire foundation pit is excavated, the foundation pit excavation and support equipment is lifted out of the foundation pit by the crane device of the second foundation pit excavation and support equipment.

[0018] Further, after the anchor rod is installed by the anchor rod drilling and installation device of the first foundation pit excavation and support equipment, the lifting device of the second foundation pit excavation and support equipment is used to install cross braces between the two supported side slopes.

[0019] And when the first foundation pit excavation and support equipment and the second foundation pit excavation and support equipment continue to advance, the precast pipe piece and the anchor rod are installed every time the equipment advances a distance, and the lifting device is used to install cross braces between the two supported side slopes until the first layer is excavated.

[0020] Further, before the excavator excavates the access area of the foundation pit excavation and support equipment in the foundation pit, the foundation pit is divided longitudinally into layers; and the enclosure pile is constructed, and an enclosure pile is punched along the excavation range of the foundation pit.

[0021] The present application also claims a foundation pit excavation and support equipment system, which adopts the modular multi-device foundation pit excavation and support method.

[0022] Further, the first foundation pit excavation and support equipment comprises:

[0023] The equipment body is provided with a storage space, and the precast pipe piece is arranged in the storage space.

[0024] Rock breaking device, the rock breaking device includes first drive assembly and rotation assembly, the rotation assembly is rotationally connected with the first drive assembly;

[0025] Cutting device, the cutting device includes second drive assembly and cutting assembly, the cutting assembly is rotationally connected with the second drive assembly;

[0026] Conveying device, the conveying device includes third drive assembly and loading winch, the loading winch is rotationally connected with the third drive assembly, by the rotation of the loading winch, the earth body of the loading winch is moved to conveying assembly, the conveying assembly transports the earth body to dump truck;

[0027] Pipe installation device, the pipe installation device includes first rotary table and grabbing assembly, the first rotary table is slidingly connected to the equipment body, the grabbing assembly is rotationally connected with the first rotary table, the grabbing assembly takes out the prefabricated pipe in the storage space and installs the prefabricated pipe on the slope;And

[0028] Anchor rod drilling and mounting device, the anchor rod drilling and mounting device includes second rotary table and drill bit, the second rotary table is slidingly connected to the equipment body, the drill bit is rotationally connected with the second rotary table;

[0029] Wherein, the rock breaking device and the cutting device and the loading winch are located on the same side of the equipment body.

[0030] Further, the modular multi-device foundation pit excavation support equipment system further includes a second foundation pit excavation support device, the second foundation pit excavation support device includes a lifting device, the lifting device is provided with a lifting gripper and a jack, the jack drives the lifting gripper to move, so as to control the bending of the lifting gripper.

[0031] Further, the second foundation pit excavation support device further includes a crane device, the crane device includes a crane arm, the crane arm is provided with a fixed pulley, and the fixed pulley is connected with a lifting wire.

[0032] One end of the crane arm is rotationally connected with a movable piece, and the lifting wire is connected with a lifting hook at one end away from the fixed pulley.

[0033] The technical scheme of the present application has the following advantages:

[0034] This invention employs a parallel excavation method, eliminating over-excavation and under-excavation during the foundation pit excavation process. Simultaneously, the equipment utilizes precast tunnel segments and anchor bolts for support, and the excavated excavated soil is transported to dump trucks via a conveying assembly. This truly achieves integrated construction of rock breaking excavation, slag removal, and support. It significantly automates and mechanizes foundation pit engineering, improving construction efficiency and ensuring project safety. It solves the technical problem of low automation and mechanization in existing foundation pit engineering technologies. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This invention illustrates a schematic diagram of the layered structure of the foundation pit in an embodiment of this application.

[0038] Figure 2 A structural schematic diagram of the retaining pile diagram in an embodiment of this application is shown;

[0039] Figure 3 A top view of the mechanical equipment arrangement in an embodiment of this application is shown;

[0040] Figure 4 A top view of the three-layer mechanical arrangement in an embodiment of this application is shown;

[0041] Figure 5 A schematic diagram of the cross-sectional structure of the construction site in an embodiment of this application is shown;

[0042] Figure 6 A schematic diagram of the rock breaking and earthwork excavation structure in an embodiment of this application is shown;

[0043] Figure 7 A schematic diagram of the earthwork waste transport structure in an embodiment of this application is shown;

[0044] Figure 8 A schematic diagram of the segment installation and anchor bolt drilling structure in an embodiment of this application is shown;

[0045] Figure 9 A schematic diagram of the cross brace installation structure in an embodiment of this application is shown;

[0046] Figure 10A structural schematic diagram of the first foundation pit excavation supporting device in the embodiment of the application is shown.

[0047] Figure 11 A top view structural schematic diagram of the first foundation pit excavation supporting device in the embodiment of the application is shown.

[0048] Figure 12 A structural schematic diagram of the rock breaking device in the embodiment of the application is shown.

[0049] Figure 13 A top view structural schematic diagram of the rock breaking device in the embodiment of the application is shown.

[0050] Figure 14 A structural schematic diagram of the cutting device in the embodiment of the application is shown.

[0051] Figure 15 A top view structural schematic diagram of the cutting device in the embodiment of the application is shown.

[0052] Figure 16 A structural schematic diagram of the conveying device in the embodiment of the application is shown.

[0053] Figure 17 A structural schematic diagram of the loading winch in the embodiment of the application is shown.

[0054] Figure 18 A structural schematic diagram of the shovel body plate in the embodiment of the application is shown.

[0055] Figure 19 A structural schematic diagram of the grabbing assembly in the embodiment of the application is shown.

[0056] Figure 20 A top view structural schematic diagram of the grabbing assembly in the embodiment of the application is shown.

[0057] Figure 21 A structural schematic diagram of the grabbing structure in the embodiment of the application is shown.

[0058] Figure 22 A top view structural schematic diagram of the grabbing structure in the embodiment of the application is shown.

[0059] Figure 23 A structural schematic diagram of the jack installed in the first sliding groove body in the embodiment of the application is shown.

[0060] Figure 24 A structural schematic diagram of the anchor rod drilling and loading device in the embodiment of the application is shown.

[0061] Figure 25 A top view structural schematic diagram of the anchor rod drilling and loading device in the embodiment of the application is shown.

[0062] Figure 26A structural schematic diagram of the second foundation pit excavation supporting device in the embodiment of the application is shown;

[0063] Figure 27 A top view structural schematic diagram of the second foundation pit excavation supporting device in the embodiment of the application is shown;

[0064] Figure 28 A structural schematic diagram of the lifting gripper in the embodiment of the application is shown;

[0065] Figure 29 A side view structural schematic diagram of the lifting gripper in the embodiment of the application is shown;

[0066] Figure 30 A structural schematic diagram of the lifting plate in the embodiment of the application is shown;

[0067] Figure 31 A structural schematic diagram of one side rotation of the lifting plate in the embodiment of the application is shown;

[0068] Figure 32 A structural schematic diagram of two side rotation of the lifting plate in the embodiment of the application is shown;

[0069] Figure 33 A top view structural schematic diagram of the lifting gripper in the embodiment of the application is shown;

[0070] Figure 34 A structural schematic diagram of the crane device in the embodiment of the application is shown;

[0071] Figure 35 A top view structural schematic diagram of the crane device in the embodiment of the application is shown;

[0072] Figure 36 A structural schematic diagram of the prefabricated pipe piece in the embodiment of the application is shown;

[0073] Wherein, the reference signs are explained as follows: 10, device main body; 11, storage space; 12, prefabricated pipe piece; 121, reserved hole; 122, reserved handle; 13, track; 14, main body power system; 20, rock breaking device; 21, first driving assembly; 22, rotating assembly; 23, rock breaking cutting head; 231, rock breaking blade; 24, driving shaft; 25, support; 30, cutting device; 31, second driving assembly; 32, cutting assembly; 33, water storage assembly; 331, cooling water spraying port; 34, telescopic assembly; 40, conveying device; 41, third driving assembly; 42, loading winch; 421, shovel body plate; 50, conveying assembly; 60, pipe piece installation device; 61, first rotating disc; 62, grabbing assembly; 63, rotating structure; 631, first rotating piece; 632, first end of the first rotating piece; 633, second end of the first rotating piece; 634, second rotating piece; 635, first end of the second rotating piece; 636, third end of the first rotating piece; 637, second end of the second rotating piece; 638, fourth end of the first rotating piece; 64, grabbing structure; 641, grabbing plate; 642, grabbing hook; 643, first sliding groove body; 65, telescopic piece; 70, anchor rod drilling installation device; 71, second rotating disc; 72, drill bit; 73, rotating motor; 74, hinge; 75, power roller; 76, drilling plate; 77, anchor rod; 771, second sliding groove body; 80, lifting device; 81, lifting hook; 811, transverse rotating support; 812, longitudinal rotating connecting piece; 813, mechanical arm; 814, lifting plate; 815, third sliding groove body; 90, jack; 100, crane device; 110, crane support; 111, crane arm; 112, lifting hook; 113, fixed pulley; 114, lifting wire; 115, movable piece; 116, crane rotating support; 120, dust removal overflow; 130, enclosure pile; 140, excavator; 150, cross brace. DETAILED DESCRIPTION

[0074] To make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0075] As shown in Figures 1 to 9 the embodiment of the present application provides a modular multi-device foundation pit excavation support method, comprising the following steps:

[0076] The excavator excavates the approach area of the foundation pit excavation support device in the foundation pit.

[0077] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are parallelly advanced to complete the rock breaking operation.

[0078] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are parallelly advanced to complete the rock breaking operation.

[0079] The precast segment 12 is hoisted to the side wall of the foundation pit through the segment installation device 60 of the first foundation pit excavation support equipment, and the precast segment 12 is installed.

[0080] The anchor rod 78 is installed through the anchor rod drilling device 70 of the first foundation pit excavation support equipment.

[0081] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance, and the precast segment 12 and the anchor rod 78 are installed every time the equipment advances a distance, until the first layer of excavation is completed.

[0082] After the first layer of excavation is completed, the precast segment 12 is installed in the foundation pit through the segment installation device 60, and the anchor rod 78 is installed through the anchor rod drilling device 70, so as to realize the support of the first layer.

[0083] The excavation and support method of the first layer is repeated, and the excavation is carried out layer by layer and the support is carried out section by section, until the entire foundation pit is excavated.

[0084] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are parallelly advanced to complete the rock breaking operation.

[0085] After the excavator 140 excavates the access area of the construction equipment in the foundation pit, the initial cross section of the foundation pit is supported by the precast segment 12 and the anchor rod 78.

[0086] After the entire foundation pit is excavated, the foundation pit excavation support equipment is lifted out of the foundation pit by the crane device 100 of the second foundation pit excavation support equipment.

[0087] After the anchor rod 78 is installed through the anchor rod drilling device 70 of the first foundation pit excavation support equipment, the lifting device 80 of the second foundation pit excavation support equipment is used to install the cross brace 150 between the two supported side slopes.

[0088] The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance, and the precast segment 12 and the anchor rod 78 are installed every time the equipment advances a distance, and the lifting device 80 is used to install the cross brace 150 between the two supported side slopes, until the first layer of excavation is completed.

[0089] In the embodiment, the method comprises the following steps:

[0090] In the embodiment, the method comprises the following steps:

[0091] Step 1: layering the foundation pit in the longitudinal direction;

[0092] Step 1: Before excavation, the excavation scheme should be determined according to the geological and hydrological data, combined with the situation of the buildings near the site. The excavation sequence, excavation width and excavation depth are reasonably determined according to the specified size. The foundation pit is layered in the longitudinal direction, and the excavation depth of each layer is designed.

[0093] In step 1, the foundation pit is layered according to the design requirements and the size of the machine. In this embodiment, the design width of the foundation pit is 20 m, and the depth is 12 m. The foundation pit is excavated in three layers in the depth direction, and the excavation depth of each layer is 4 m.

[0094] The purpose of step 1 in this embodiment is to layer the foundation pit, so that the muck car and the first foundation pit excavation support equipment and the second foundation pit excavation support equipment and other foundation pit excavation support equipment construction equipment can enter the site, and the prefabricated segment can be selected.

[0095] Step 2: construction of the fender pile, a circle of fender pile along the excavation range of the foundation pit;

[0096] Step 2: The fender pile is constructed along the excavation range of the foundation pit.

[0097] In step 2, the fender pile has the forms of row pile, reinforced cement soil stiffening pile, hard occlusion row pile, etc. The size of the fender pile is also various, and the specific selection should be determined according to the hydrogeological conditions of the site. In most cases, the size of the fender pile used is 800 mm in diameter and 1600 mm in spacing.

[0098] The purpose of the fender pile in step 2 in this embodiment is to block the earthwork of the surrounding road outside the foundation pit after the foundation pit is excavated, to protect the safety of the construction in the foundation pit, and at the same time, the fender pile also has the effect of stopping water, which can prevent the surrounding water from flowing into the foundation pit.

[0099] Step 3: the excavator excavates the access area of the foundation pit excavation support equipment construction equipment in the foundation pit;

[0100] Step 3: The excavator excavates the access area of the muck car, the first foundation pit excavation support equipment and the second foundation pit excavation support equipment in the foundation pit. According to the design width of the foundation pit, the size of the access area is calculated. In this construction, the design width of the foundation pit is 20 m, and it is excavated in three layers. According to the size requirements of the access equipment foundation pit construction integrated equipment and the muck car, the size of the access area is designed to be 20 m x 20 m.

[0101] In step 3 of the embodiment, the initial working face is excavated to realize reasonable arrangement of the equipment and ensure that the subsequent machines can enter the site in an orderly manner.

[0102] Step 4: The initial section of the foundation pit is supported by prefabricated segments and anchor rods 78.

[0103] Step 4: An end support is placed at the first end of the foundation pit excavation, and the initial section is supported by prefabricated segments and anchor rods.

[0104] In step 4, the prefabricated segment has a size of 2m x 1.5m x 0.15m, with a height of 2m, a width of 1.5m, and a thickness of 0.15m, all in a rectangular structure. There are 9 anchor rod holes in the prefabricated segment, and the prefabricated segment is installed from the bottom layer of the foundation pit.

[0105] In step 4 of the embodiment, the initial section is first supported to prevent the foundation pit from collapsing, following the principle of supporting first and then excavating.

[0106] Step 5: First foundation pit excavation support equipment is arranged at both ends of the foundation pit, and second foundation pit excavation support equipment is arranged at the middle position 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; each support equipment is provided with a muck car away from the rear end of the rock breaking device 20;

[0107] Step 5: The excavation support equipment construction equipment enters the site in sequence, a plurality of first foundation pit excavation support equipment are arranged at both ends of the foundation pit, and a plurality of second foundation pit excavation support equipment are arranged at the middle position of the foundation pit, wherein the specific number should be determined according to the excavation width of the foundation pit, and in the embodiment, 2 first foundation pit excavation support equipment and 2 second foundation pit excavation support equipment are used. Then the first foundation pit excavation support equipment and the second foundation pit excavation support equipment are used to level the site.

[0108] In step 5, according to the design requirements of the foundation pit, 4 foundation pit excavation support equipment are installed in the foundation pit, arranged in parallel along the construction advancing direction, one first foundation pit excavation support equipment is arranged at each end of the foundation pit, and two second foundation pit excavation support equipment are arranged between the two first foundation pit excavation support equipment. Each equipment is provided with a muck car behind it, which is arranged below the conveyor belt of the conveying device 40, for recycling soil residue at any time.

[0109] In step 5 of the embodiment, the excavation machine can only excavate the initial flat area, and the first foundation pit excavation support equipment and the second foundation pit excavation support equipment can level the site well, not only ensuring smooth operation of the excavation support equipment construction equipment, but also providing a horizontal working surface for the excavation support equipment construction equipment to work in the excavation area.

[0110] Step 6: The first and second foundation pit excavation support devices are pushed forward in parallel to complete the rock breaking operation; wherein the soil residue generated by excavation is transported to the residue car by the conveying assembly;

[0111] Step 6: The first and second foundation pit excavation support devices are pushed forward in parallel to complete the rock breaking operation. The soil residue generated by excavation is transported to the residue car by the conveying belt, and the fully loaded soil residue is directly transported out of the foundation pit and placed in the designated location.

[0112] In step 6 of the present embodiment, two second foundation pit excavation support devices and two first foundation pit excavation support devices are pushed forward simultaneously, mainly to realize simultaneous construction of the foundation pit excavation support device construction equipment, facilitate the installation of the subsequent foundation pit side slope precast segment, and the lifting device 80 places the cross brace 150 between the two sides of the soil body. The residue car is used to collect the excavated soil at any time and then transport it to the designated location.

[0113] Step 7: The precast segment is hoisted to the side wall of the foundation pit by the precast segment installation device 60, and the precast segment is installed;

[0114] Step 7: As the rock breaking and soil excavation proceed, the engineering machinery is pushed forward in the horizontal direction by a certain distance, and the precast segment is hoisted to the side wall of the foundation pit by the precast segment installation device 60 in the excavation system, and the precast segment is installed.

[0115] In step 7 of the present embodiment, the precast segment is compacted to increase the mechanical interlocking force between the soil body and the precast segment and increase the frictional force to resist the gravity of the precast segment.

[0116] Step 8: The anchor rod 78 is installed by the anchor rod drilling and installation device 70;

[0117] Step 8: The drilling, anchor rod insertion, grouting, tensioning, and locking processes are sequentially completed by the anchor rod drilling and installation device 70 in the foundation pit excavation support device construction equipment, and the anchor rod 78 is installed.

[0118] In steps 7 to 8, attention should be paid to controlling the spacing and position of the anchor rod drilling holes to correspond to the position of the precast segment reserved hole. At the same time, attention should be paid to compacting the precast segment during hanging.

[0119] In step 8 of the present embodiment, the purpose of installing the anchor rod 78 is to reinforce and stabilize the surrounding rock, achieving active support of the foundation pit.

[0120] Step 9: Then, the cross brace 150 is installed between the two supported side slopes by the lifting device 80;

[0121] Step 9: The cross brace 150 is installed between the two supported side slopes by the lifting device to reinforce the precast segment.

[0122] In step 9, it should be noted that the support position of the cross brace 150 is pressed at the joint of the bottom layer of precast segment and other precast segments. In addition, it is worth noting that, in the process of the third layer of slope support, since the precast segment directly contacts the ground and does not need to continue to dig deep, it is not necessary to install the cross brace 150 between the precast segments.

[0123] In step 9 of the embodiment, the purpose of placing the steel pipe cross brace 150 is to apply a normal force to the precast segment, increase the friction between the precast segment and the soil, and reduce the dependence of the precast segment on the anchor rod 78.

[0124] Step 10: The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance, and every time a distance is advanced, steps 7 to 9 are repeated to install the cross brace 150 between the two supported slopes by using the precast segment installation device 60, the anchor rod drilling and installation device 70, and the lifting device 80;

[0125] The anchor rod 78 is installed until the excavation of this layer is completed.

[0126] In step 10: the first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance in parallel, and every time a distance is advanced, steps 7 to 9 are repeated until the excavation of this layer is completed. The distance advanced each time is 4 m.

[0127] Step 11: after the excavation of this layer is completed, the precast segment is installed in the foundation pit by using the precast segment installation device 60, and the anchor rod 78 is installed by using the anchor rod drilling and installation device 70, to achieve the support of the first layer.

[0128] In step 11, the newly formed vertical section of the foundation pit is installed with the precast segment by using the precast segment installation device 60, and the anchor rod 78 is installed by using the anchor rod drilling and installation device 70, to achieve the support of the plane, and the steel pipe cross brace 150 of this layer is also disassembled.

[0129] In step 11, the steel pipe cross brace 150 is disassembled before excavating the next layer, in order to recycle it to support the precast segment of the next layer.

[0130] Step 12: repeat steps 3 to 11 to excavate layer by layer and support section by section until the entire foundation pit is excavated.

[0131] In step 12: repeat steps 3 to 11 to excavate the foundation pit layer by layer and support section by section until the entire foundation pit is excavated.

[0132] Step 13: use the crane device 100 to lift the foundation pit excavation support equipment and construction equipment out of the foundation pit. In step 13: use the crane device 100 to lift the muck car, the second foundation pit excavation support equipment, and the second foundation pit excavation support equipment out of the foundation pit, to recycle the equipment.

[0133] The method of the embodiment adopts a parallel advancing method, and there is no over-excavation and under-excavation phenomenon in the excavation process of the foundation pit. Meanwhile, the device uses prefabricated segments and anchor rods for support, and the excavated soil is transported to the muck car through the conveying assembly. The rock breaking, excavation, residue removal and support are integrated, which realizes the automation and high mechanization of the foundation pit engineering, improves the construction efficiency, ensures the safety of the foundation pit engineering, and solves the technical problem of low automation and mechanization of the foundation pit engineering in the prior art.

[0134] As shown in Figures 10 to 16 The embodiment of the application also provides a foundation pit excavation and support equipment system, which adopts a modular multi-device foundation pit excavation and support method.

[0135] The foundation pit excavation and support equipment system comprises a first foundation pit excavation and support device, and the first foundation pit excavation and support device comprises:

[0136] The device main body 10 is provided with a storage space 11, and the storage space 11 is provided with prefabricated segments 12.

[0137] The rock breaking device 20 comprises a first driving assembly 21 and a rotating assembly 22, and the rotating assembly 22 is rotationally connected with the first driving assembly 21.

[0138] The cutting device 30 comprises a second driving assembly 31 and a cutting assembly 32, and the cutting assembly 32 is rotationally connected with the second driving assembly 31.

[0139] The conveying device 40 comprises a third driving assembly 41 and a loading winch 42, and the loading winch 42 is rotationally connected with the third driving assembly 41. The soil of the loading winch 42 is moved to the conveying assembly 50 through the rotation of the loading winch 42, and the conveying assembly 50 transports the soil to the muck car.

[0140] The segment installation device 60 comprises a first turntable 61 and a grabbing assembly 62, the first turntable 61 is slidingly connected with the device main body 10, and the grabbing assembly 62 is rotationally connected with the first turntable 61. The grabbing assembly 62 takes out the prefabricated segment 12 in the storage space 11 and installs the prefabricated segment 12 on the slope.

[0141] The anchor rod drilling and installation device 70 comprises a second turntable 71 and a drill bit 72, and the second turntable 71 is slidingly connected with the device main body 10, and the drill bit 72 is rotationally connected with the second turntable 71.

[0142] The rock breaking device 20, the cutting device 30 and the loading winch 42 are located on the same side of the device main body 10.

[0143] In the embodiment, the device body 10 is controlled to operate by the body power system 14.

[0144] In the embodiment, the rock breaking device 20 is located at the front end of the device body 10, the first driving assembly 21 can be selected as a rock breaking power motor, and the rotating assembly 22 can be selected as a rock breaking cutting tray.

[0145] In the embodiment, when hard soil and rock are encountered during the excavation of the foundation pit, the rock breaking power motor provides power for the rotation of the rock breaking cutting tray through the driving rotating shaft, and the large block can be pre-decomposed through the rotation to loosen the internal structure.

[0146] In the embodiment, the cutting device 30 is located at the same side of the device body 10 as the rock breaking device 20, that is, the cutting device 30 is also located at the front end of the device body 10; the second driving assembly 31 can be selected as a driving motor, and the cutting assembly 32 can be selected as a cutting head.

[0147] In the embodiment, the driving motor rotates the cutting head, and the cutting device 30 cuts the large block into loose soil through the rotation of the cutting head.

[0148] In the embodiment, the rock breaking device 20 starts to work to break hard rock and soil, and then the disturbed soft soil passes through the cutting device 30 to be decomposed into scattered soil, and the cutting device 30 and the rock breaking device 20 cooperate to realize the excavation of the foundation pit, which can solve the problem that the blasting excavation in the city causes the ground surface to vibrate and greatly affects the daily life of residents. At the same time, the equipment system is parallelly pushed to excavate, and there is no problem of over-excavation and under-excavation.

[0149] In the embodiment, the conveying device 40 is located inside the device body 10, the conveying assembly 50 includes a conveyor belt and a conveying power motor. The third driving assembly 41 can be selected as a winch driving motor, the soil naturally falls onto the loading winch 42, the winch driving motor provides power for the loading winch 42, and the soil in the loading winch 42 is thrown onto the conveyor belt by the rotating force of the loading winch 42, the conveyor belt transports the soil to the muck car; and the soil is transported to the muck car behind the device body 10 through the conveyor belt. The conveying power motor provides power for the work of the conveyor belt.

[0150] In the embodiment, the device body 10 is provided with a track 13, and the first turntable 61 slides on the device body 10 along the track 13. Since the grabbing assembly 62 is rotationally connected with the first turntable 61, that is, the grabbing assembly 62 can rotate by 360 degrees relative to the first turntable 61, this structure design is beneficial to the grabbing assembly 62 to take out the prefabricated pipe piece 12 in the storage space 11 and install the prefabricated pipe piece 12 on the slope.

[0151] In the embodiment, the drill bit 72 slides on the device body 10 along the track 13, and since the drill bit 72 is rotationally connected with the second turntable 71, that is, the drill bit 72 can rotate 360° relative to the second turntable 71, this structural design is beneficial to the anchor rod drilling device 70 to drill a hole on the slope while installing an anchor rod, the anchor rod is hung on the prefabricated segment 12 on the slope, thereby supporting the slope.

[0152] 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 by themselves. The track 13 is connected with the device body 10 by bolts and is arranged on both sides of the device body 10.

[0153] The rock breaking device 20 is used to break the surrounding rock, the cutting device 30 is used to crush the rock, and the conveying device is used to convey the crushed rock away, and meanwhile, the prefabricated segment 12 and the anchor rod are used for supporting, so that the excavation, slag removal and support are integrated, mechanized and automated, the working efficiency is improved, and the safety of the foundation pit engineering is ensured.

[0154] As shown in Figures 12 to 13 In the embodiment, the rock breaking and cutting tray is provided with a rock breaking and cutting head 23, a plurality of rock breaking blades 231 are uniformly distributed on the rock breaking and cutting head 23, power is provided by a rock breaking power motor to make the rock breaking blades 231 rotate, large blocks can be pre-decomposed to make the internal structure loose, and the purpose of breaking the rock is achieved. One end of the rock breaking and cutting tray of the rock breaking device 20 is connected with a driving shaft 24, the rock breaking and cutting tray is rotationally connected with the rock breaking power motor through the driving shaft 24, and a support 25 is installed at the end of the driving shaft 24 close to the rock breaking power motor. The rock breaking device 20 is fixedly installed at the front end of the device body 10 through the support 25.

[0155] As shown in Figures 16 to 18 In the embodiment, a gear is installed on the driving rotating shaft of the winch driving motor and meshes with a gear on the loading winch 42 to drive, a shovel plate 421 is installed on the loading winch 42 to store the soil, and the rotation of the loading winch 42 drives the rotation of the shovel plate 421. The soil in the shovel plate 421 is thrown onto the conveying assembly 50 through the rotating force, and finally the soil is conveyed to the muck car behind the device body 10 through the conveying belt in the conveying assembly 50.

[0156] As shown in Figure 36 In the embodiment, the prefabricated segment 12 is provided with a hanging structure, and the hanging structure can be a reserved hole 121, that is, the prefabricated segment 12 is provided with the reserved hole 121.

[0157] In the embodiment, the hanging structure can also be a reserved handle 122; that is, the anchor rod is hung on the slope through the reserved hole 121 or the reserved handle 122 of the prefabricated pipe piece 12, thereby playing a supporting role on the slope.

[0158] As shown in the drawings, Figures 14 to 15 In the embodiment, the cutting device 30 further comprises a water storage assembly 33, the water storage assembly 33 is provided with a cooling water spraying port 331, and one end of the water storage assembly 33 is connected with the cutting assembly 32; wherein the cooling water spraying port 331 is arranged close to the cutting assembly 32.

[0159] In the embodiment, the water storage assembly 33 can be a water storage tank.

[0160] In the embodiment, the cutting device 30 can atomize the moisture in the water storage tank through the cooling water spraying port 331 and spray it onto the cutting head, so as to ensure that the temperature of the cutting device 30 during continuous work is within a controllable range.

[0161] As shown in the drawings, Figure 15 In the embodiment, the cutting device 30 further comprises a telescopic assembly 34, and the telescopic assembly 34 is connected with the other end of the water storage assembly 33.

[0162] In the embodiment, the telescopic assembly 34 can adjust the horizontal position of the cutting head by controlling the hydraulic cylinder inside and the telescopic structure outside, so as to adapt to different working needs.

[0163] As shown in the drawings, Figures 19 to 23 In the embodiment, the grabbing assembly 62 comprises:

[0164] A rotating structure 63, one end of the rotating structure 63 is rotatably connected with the first turntable 61, and the other end of the rotating structure 63 is connected with the first turntable 61 through the telescopic piece 65.

[0165] A grabbing structure 64, one end of the grabbing structure 64 is rotatably connected with the rotating structure 63, and the other end of the grabbing structure 64 is connected with the rotating structure 63 through the telescopic piece 65.

[0166] In the embodiment, one end of the rotating structure 63 is rotatably connected with the first turntable 61, and the other end of the rotating structure 63 is connected with the first turntable 61 through the telescopic piece 65, that is, the rotating structure 63 can be driven to rotate along the first turntable 61 through the telescopic piece 65.

[0167] In the embodiment, one end of the grabbing structure 64 is rotatably connected with the rotating structure 63, and the other end of the grabbing structure 64 is connected with the rotating structure 63 through the telescopic piece 65, that is, the grabbing structure 64 can be driven to rotate along the rotating structure 63 through the telescopic piece 65.

[0168] The grabbing structure 64 can move in different directions and angles under the joint action of the first rotating disc 61 and the rotating structure 63, and after the angle and direction of the precast pipe piece 12 and the slope are adjusted and verified, the precast pipe piece 12 is pressed on the slope.

[0169] As shown in Figures 19 to 23 the embodiment, the rotating structure 63 comprises:

[0170] The first rotating part 631 is rotatably connected to one end of the first rotating disc 61 at the first end 632, and the second end 633 of the first rotating part is connected to the other end of the first rotating disc 61 through the telescopic part 65.

[0171] The second rotating part 634 is rotatably connected to the third end 636 of the first rotating part at the first end 635, and the second end 637 of the second rotating part is connected to the fourth end 638 of the first rotating part through the telescopic part 65, and the third end 639 of the second rotating part is rotatably connected to the grabbing structure 64.

[0172] In the embodiment, the first end 632 of the first rotating part is rotatably connected to the first rotating disc 61, and the second end 633 of the first rotating part is connected to the other end of the first rotating disc 61 through the telescopic part 65, that is, the first rotating part 631 can be driven to rotate along the first rotating disc through the telescopic part 65.

[0173] In the embodiment, the first end 635 of the second rotating part is rotatably connected to the third end 636 of the first rotating part, and the second end 637 of the second rotating part is connected to the fourth end 638 of the first rotating part through the telescopic part 65, that is, the second rotating part 634 can be driven to rotate along the first rotating part 631 through the telescopic part 65.

[0174] In the embodiment, the first rotating part 631 and the second rotating part 634 are rotatably connected to each other, and the grabbing structure 64 can rotate in different directions and angles under the joint action of the first rotating part 631 and the second rotating part 634, and after the angle and direction of the precast pipe piece 12 and the slope are adjusted and verified, the precast pipe piece 12 is pressed on the slope.

[0175] As shown in Figures 19 to 23 the embodiment, the grabbing structure 64 comprises a grabbing plate 641, and a plurality of grabbing hooks 642 are arranged on the grabbing plate 641, each grabbing hook 642 is connected to a jack 90, and the grabbing hook 642 is adjusted and arranged through the jack 90.

[0176] In this embodiment, maintaining the stability of the excavated pit slope during the system's forward movement requires slope support. The gripping plate 641 of the gripping structure 64 is taken out from the rear of the vehicle and installed on the slope. Each gripping hook 642 can be adjusted in direction via an independent hydraulic jack, and the gripping assembly 62 can be adjusted longitudinally by controlling the extension and retraction of the hydraulic jack. After the angle and direction of the precast segment and the slope are adjusted and verified, the extension and retraction of the gripping assembly 62 is controlled by the hydraulic cylinder inside the gripping structure 64, so that the precast segment 12 is firmly pressed onto the slope.

[0177] like Figures 19 to 23 As shown, in this embodiment, the gripping plate 641 has a first sliding groove 643, and the gripping plate 641 is slidably connected to the first sliding groove 643 by a jack 90.

[0178] In this embodiment, the jack 90 can slide on the first chute 643 to adjust the position and orientation of the gripping plate 641.

[0179] like Figures 24 to 25 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 a power roller 75 is provided at the end of the hinge 74 away from the rotary motor 73. The power roller 75 works in cooperation with the hinge 74 and drives the drill bit 72 to move.

[0180] The anchor drilling device 70 also includes a drilling plate 76, a hinge 74 is disposed on the drilling plate 76, and a bearing arm 77 is provided at the end of the drilling plate 76 away from the hinge 74. One end of the bearing arm 77 is rotatably connected to the drilling plate 76, and the other end of the bearing arm 77 is connected to the drilling plate 76 through a jack 90. ​​The jack 90 drives the drilling plate 76 to rotate.

[0181] In this embodiment, the end of the bearing arm 77 away from the drilling plate 76 is connected to a second slide body 771. The second slide body 771 is provided with a jack 90. ​​One end of the jack 90 is connected to the second slide body 771, and the other end of the jack 90 is connected to the bearing arm 77. The jack 90 drives the bearing arm 77 to slide along the second slide body 771.

[0182] In this embodiment, one end of the second turntable 71 is rotatably connected to the second slide body 771, and the other end of the second turntable 71 is provided with a jack 90. ​​The end of the jack 90 away from the second turntable 71 is connected to the second slide body 771, and the jack 90 drives the second slide body 771 to rotate relative to the second turntable 71.

[0183] In this embodiment, the anchor bolt drilling device 70 simultaneously drills holes in the slope and installs anchor bolts. The power roller 75 and hinge 74 provide forward power for the drill bit 72 to drill the hole. The rotating motor 73 provides torque to rotate the drill bit 72. The jack 90 allows the bearing arm 77 to slide horizontally within the second chute 771. The jack 90 can also longitudinally lift the drilling plate 76. Finally, the jack 90 can longitudinally lift the second chute 771.

[0184] In this embodiment, the multiple movable joint structures of the anchor drilling device 70 work together to drill holes and install anchors at suitable locations on the slope.

[0185] like Figures 26 to 27 As shown, in this embodiment, the second foundation pit excavation support equipment includes a lifting device 80, which is equipped with a lifting grab 81 and a jack 90. ​​The jack 90 drives the lifting grab 81 to move, thereby controlling the bending of the lifting grab 81.

[0186] In this embodiment, the lifting gripper 81 includes a transverse rotating support 811, a longitudinal rotating connector 812, and a robotic arm 813. One end of the longitudinal rotating connector 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 connector 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 connector 812 and the robotic arm 813.

[0187] The lifting plate 814 is equipped with a jack 90 and a third chute 815. The jack 90 moves within the third chute 815 to control the bending of the lifting plate 814, so as to better support the crossbeam and support the crossbeam between the soil on both sides.

[0188] like Figures 26 to 30 As shown in this embodiment, the second foundation pit excavation support equipment also includes a crane device 100. The crane device 100 includes a crane boom 111, a fixed pulley 113 is installed on the crane boom 111, and a lifting line 114 is connected to the fixed pulley 113. A movable part 115 is rotatably connected to one end of the crane boom 111, and a hook 112 is connected to the movable part 115 at the end of the lifting line 114 away from the fixed pulley 113.

[0189] In this 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.

[0190] In the embodiment, the movable piece 115 is rotatably connected to the other end of the crane arm 111; 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 piece 115, that is, the movable piece 115 is driven to rotate along the crane arm 111 by the jack 90.

[0191] In the embodiment, the trolley 113 is installed on the crane arm 111, and the trolley 113 is provided with the wire 114; one end of the wire 114 is connected to the trolley 113, and the other end of the wire 114 is connected to the hook 112 through the movable piece 115; the movable piece 115 can drive the hook 112 to rotate, that is, the movement of the hook 112 can be controlled by not only the rotation of the trolley 113 but also the rotation of the movable piece 115.

[0192] In the embodiment, the crane support 110 is installed on the crane rotating support 116, so that the crane device 100 can rotate in all directions, and the flexibility of the device is high.

[0193] As shown in Figure 26 In the embodiment, the second foundation pit excavation support equipment further comprises a dust overflow device 120, which can be used to suck a large amount of dust.

[0194] The second foundation pit excavation support equipment further comprises a device body, and the device body is provided with a rock breaking device 20, a cutting device 30 and a conveying device 40; the rock breaking device 20, the cutting device 30 and the conveying device 40 are used together with the first foundation pit excavation support equipment to break, crush and convey the surrounding rock; that is, the rock breaking device 20 of the second foundation pit excavation support equipment breaks the surrounding rock, then the cutting device 30 crushes the rock, and finally the conveying device 40 conveys the crushed rock away; then, under the joint action of the segment installation device 60 and the anchor rod drilling and installation device 70 of the first foundation pit excavation support equipment, the prefabricated segments 12 and the anchor rods are used to support the foundation pit; finally, since the deep foundation pit is excavated in layers, after the support work of the first layer of the foundation pit is completely finished, in order to prevent the already completed slope support from falling off when the next layer is excavated, the support needs to be reinforced, the lifting device 80 is used to better support the cross beam, the cross beam is supported between the two sides of the soil, and the slope support is well consolidated. In addition, the crane device 100 can flexibly hoist the component to be lifted onto the lifting device 80. The crane device 100 supports the lifting device 80, and then the lifting device 80 installs the support cross beam between the prefabricated segments 12. The whole work process is completed.

[0195] In summary, the application provides a modular multi-device foundation pit excavation support method and its equipment system; first, the foundation pit is longitudinally layered, the entire system starts construction at a pre-planned location, the number and type of car bodies are correctly arranged according to the actual working face (two first foundation pit excavation support devices are arranged on both sides of the side slope that needs to be supported, and two first foundation pit excavation support devices are arranged in the middle that needs to be supported; ) the direction is adjusted, the device is started, the rock breaking device 20 starts working, breaking the hard rock-soil body, then the disturbed soft soil body passes through the cutting device 30 to decompose into scattered soil bodies, which fall into the loading winch, and are transported to the muck car behind the car through the conveying assembly. The anchor rod drilling and mounting device is controlled and adjusted to the appropriate position, responsible for drilling holes and installing anchor rods on the newly excavated foundation pit slope, then the grabbing assembly 62 takes out the prefabricated pipe piece 12 in the storage space 11, and installs the prefabricated pipe piece 12 on the slope. Complete the preliminary support. Preferably, the support is hoisted on the lifting device 80 by the crane device 100 of the second foundation pit excavation support, then the lifting device 80 installs the support cross beam between the prefabricated pipe pieces 12, and completes the support and reinforcement work.

[0196] The method of the application adopts a parallel advancing method, and there is no over-excavation and under-excavation phenomenon in the excavation process 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 integrated flat site slag discharge is designed, which coordinates the orderly advancement of various construction organizations. The disturbance to the surrounding undisturbed soil and the disturbance to the residents are reduced. In addition, the support method is changed from spray irrigation support to prefabricated pipe piece support, realizing automatic construction of foundation pit excavation and support, systematizing the construction process, and coordinating construction organization management. The stability of the foundation pit slope and the construction safety are effectively ensured. The technical problems of low automation and mechanization degree of the existing foundation pit engineering are solved.

[0197] It should be noted that, in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0198] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A method of modular multi-device excavation support of a foundation pit, characterized in that, The method comprises the following steps: The excavator excavates a site access area of the foundation pit excavation support equipment in the foundation pit; Two ends of the foundation pit are provided with first foundation pit excavation support equipment, and a middle position of the foundation pit is provided with second foundation pit excavation support equipment, and the first foundation pit excavation support equipment and the second foundation pit excavation support equipment are used to level the site; The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are pushed in parallel to complete the rock breaking operation; The prefabricated pipe section (12) is hoisted to the side wall of the foundation pit through the pipe section mounting device (60) of the first foundation pit excavation support equipment, and the prefabricated pipe section (12) is installed; The anchor rod (78) is installed through the anchor rod drilling device (70) of the first foundation pit excavation support equipment; The first foundation pit excavation support equipment and the second foundation pit excavation support equipment continue to advance, and the prefabricated pipe section (12) and the anchor rod (78) are installed every time the equipment advances a distance, and the cross brace (150) is installed between the two supported slopes by using the lifting device (80), until the first layer of excavation is completed; After the first layer of excavation is completed, the prefabricated pipe section (12) is installed in the foundation pit through the prefabricated pipe section mounting device (60), and the anchor rod (78) is installed through the anchor rod drilling device (70), so as to realize the support of the first layer; after the anchor rod (78) is installed through the anchor rod drilling device (70) of the first foundation pit excavation support equipment, the cross brace (150) is installed between the two supported slopes by using the lifting device (80) of the second foundation pit excavation support equipment; The excavation and support method of the first layer is repeated, and the excavation is carried out layer by layer and the support is carried out section by section, until the entire foundation pit is excavated.

2. The modular multi-machine caisson excavation support method according to claim 1, wherein, The first foundation pit excavation support equipment and the second foundation pit excavation support equipment are provided with a muck car at one end away from the rock breaking device (20); wherein the muck generated by excavation is transported into the muck car through the conveying assembly (50) of the first foundation pit excavation support equipment and / or the conveying assembly (50) of the second foundation pit excavation support equipment.

3. The method of claim 1, wherein, After the excavator excavates the site access area of the construction equipment in the foundation pit, the prefabricated pipe section (12) and the anchor rod (78) are supported on the initial cross section of the foundation pit.

4. The method of claim 1, wherein, After the entire foundation pit is excavated, the foundation pit excavation support equipment is lifted out of the foundation pit by using the crane device (100) of the second foundation pit excavation support equipment.

5. The method of claim 1, wherein, Before the excavator excavates the site access area of the foundation pit excavation support equipment in the foundation pit, the foundation pit is longitudinally layered; and the enclosure pile is constructed, and an enclosure pile is punched along the excavation range of the foundation pit.

6. A system for foundation excavation support equipment, characterized by, The modular multi-device foundation pit excavation support method of any one of claims 1-5 is adopted.

7. A system of foundation excavation support equipment according to claim 6, wherein, The first foundation pit excavation support equipment comprises: A device main body (10) is provided with a storage space (11), and the storage space (11) is provided with a prefabricated pipe section (12); The rock breaking device (20) comprises a first driving assembly (21) and a rotating assembly (22), the rotating assembly (22) is rotationally connected with the first driving assembly (21); The cutting device (30) comprises a second driving assembly (31) and a cutting assembly (32), the cutting assembly (32) is rotationally connected with the second driving assembly (31); The conveying device (40) comprises a third driving assembly (41) and a loading winch (42), the loading winch (42) is rotationally connected with the third driving assembly (41), through the rotation of the loading winch (42), the soil of the loading winch (42) is moved to a conveying assembly (50), the conveying assembly (50) transports the soil to a muck truck; The segment installation device (60) comprises a first rotating disc (61) and a grabbing assembly (62), the first rotating disc (61) is slidingly connected with the equipment body (10), the grabbing assembly (62) is rotationally connected with the first rotating disc (61), the grabbing assembly (62) takes out a prefabricated segment (12) in the storage space (11) and installs the prefabricated segment (12) on a slope; and The anchor rod drilling and installing device (70) comprises a second rotating disc (71) and a drill bit (72), the second rotating disc (71) is slidingly connected with the equipment body (10), the drill bit (72) is rotationally connected with the second rotating disc (71); The rock breaking device (20), the cutting device (30) and the loading winch (42) are located on the same side of the equipment body (10).

8. A system of foundation excavation support equipment according to claim 7, characterized in that, characterized in that, The foundation pit excavation and supporting equipment system further comprises a second foundation pit excavation and supporting device, the second foundation pit excavation and supporting device comprises a lifting device (80), the lifting device (80) is provided with a lifting gripper (81) and a jack (90), the jack (90) drives the lifting gripper (81) to move, so as to control the bending of the lifting gripper (81).

9. The system of Figure 7, wherein, The second foundation pit excavation and supporting device further comprises a crane device (100), the crane device (100) comprises a crane arm (111), the crane arm (111) is provided with a fixed pulley (113), the fixed pulley (113) is connected with a lifting wire (114); One end of the crane arm (111) is rotationally connected with a movable piece (115), one end of the lifting wire (114) away from the fixed pulley (113) is provided with a lifting hook (112) through the movable piece (115).

Images