Large-span bidirectional shallow curing stirring equipment

Abstract

The utility model provides large-span bidirectional shallow solidification stirring equipment, which relates to the technical field of underground construction mechanical equipment and comprises an extension arm, a vertical stirring head, a transverse stirring head and a conveying pipeline system. The single stirring range can be enlarged by adopting two pieces of transverse stirring head and vertical stirring head structure equipment for construction, the projection length on the plane is 1.8-3 m, and the projection width is 0.9-1.3 m. The utility model has the advantages that the blades of the transverse stirring head for stirring in two directions can realize multi-dimensional shearing and stirring of a soil body, and the design of a staggered layer structure and a two-way stirring structure between the free blades and the stirring blades is utilized, so that the effect of multi-directional shearing and stirring is realized; through the multi-nozzle design of the conveying pipeline, the curing material can be uniformly sprayed into a stirring area, the construction quality of shallow curing treatment can be greatly improved by combining monitoring and control of the rotating speed of the stirring head, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of underground construction machinery and equipment, in particular to a large-span bidirectional shallow layer solidification mixing device. Background Art

[0002] In-situ mixing and solidification is a foundation reinforcement technology that is mainly used to improve the properties of foundation soil. When the natural foundation soil is insufficient in strength or deformed, and the permeability does not meet the engineering requirements, the soil layer can be reinforced in situ by artificial methods (physical or chemical). This technology usually uses cement, industrial waste, etc. as cementing materials, and adds a small amount of admixtures to mix with the foundation soft soil or silt to achieve in-situ solidification and improve the bearing capacity and stability of the foundation. This technology has the advantages of simple construction and low cost, and is widely used in foundation treatment of various buildings and engineering projects.

[0003] 1. In the current application of in-situ shallow solidification mixing equipment, the mixing blades generally adopt a unidirectional rotation design. The mixing blades have insufficient mixing capacity for the soil, making it difficult to ensure uniform mixing of the soil and the solidification material, resulting in poor soil reinforcement effect and failure to meet the uniformity and strength continuity design requirements of the reinforced soil.

[0004] 2. Currently, the single mixing operation area of ​​the mixing equipment is relatively small, which limits the construction efficiency and production capacity in large-scale construction scenarios. The project construction period is long and the construction cost is high, which may also have an adverse impact on the overall progress and construction quality of the project.

[0005] 3. The existing shallow solidification mixing equipment generally has only one nozzle at the root of each mixing drum, and adopts an equal-diameter circular hole form. This structural form will result in a low injection speed of the solidified material, and the injection range cannot cover the mixing area, affecting the uniformity and continuity of soil reinforcement.

[0006] 4. There are fewer mixing blades, and the mixing times of the mixing blades are less at the same rotation speed, which affects the mixing effect. At the same time, the real-time mixing times cannot be known during construction. This uncertainty will lead to uneven mixing in the mixing operation, and it is difficult to control the mixing quality of the soil and solidified materials. Utility Model Content

[0007] In view of the characteristics and technical defects of existing shallow solidification mixing equipment, the utility model provides a large-span bidirectional shallow solidification mixing equipment and a construction method. The equipment forms a new mixing structure by placing two horizontal mixing heads at a certain angle. The mixing blades of the horizontal mixing head can achieve mixing in two directions to achieve multi-dimensional mixing of the soil. At the same time, the staggered structure design between the free blade and the rotating mixing blade achieves a staggered mixing effect in a local area.

[0008] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0009] A large-span bidirectional shallow-layer solidification mixing equipment comprises an extension arm, a transverse mixing head and a conveying pipeline system; the transverse mixing heads are two and are arranged at the lower end of the extension arm at a certain angle; the transverse mixing head comprises a stirring fixed part, a rotation drive assembly, a first stirring rotating part, a second stirring rotating part, a plurality of first stirring blades, a plurality of second stirring blades and a plurality of free blades; the stirring fixed part is arranged at the lower end of the extension arm; the rotation drive assembly is arranged inside the stirring fixed part, the rotation drive assembly is connected to the first stirring rotating part and the second stirring rotating part respectively, and the stirring fixed part, the first stirring rotating part and the second stirring rotating part are coaxially arranged; the rotation drive assembly is used to drive the first stirring rotating part The rotating part and the second stirring rotating part rotate in opposite directions; a plurality of the first stirring blades are arranged at intervals along the circumference on the outer periphery of the first stirring rotating part, a plurality of the second stirring blades are arranged at intervals along the circumference on the outer periphery of the second stirring rotating part, a plurality of the free blades are rotatably connected to the first stirring rotating part or the second stirring rotating part through a sleeve, and the free blade is located between the first stirring blade and the second stirring blade, and the free blade, the first stirring blade and the second stirring blade are staggered and achieve the effect of mutually cutting the soil; at least one nozzle is arranged on the transverse stirring head; the conveying pipeline system is connected to the nozzle and is used to switch the conveying medium at will and make the conveying medium spray out from the nozzle. The equipment forms a new stirring structure by placing two transverse stirring heads at a certain angle, and the stirring blades of the transverse stirring head can achieve stirring in two directions to achieve multi-dimensional stirring of the soil. At the same time, the staggered structure design between the free blade and the rotating stirring blade realizes the staggered stirring effect in the local area. The conveying pipeline can convey solidified materials of different media, and the multi-nozzle structure design can evenly spray the solidified materials into the stirring area.

[0010] Preferably, a vertical stirring head is also provided at the bottom of the axial direction of the extension arm, and the vertical stirring head is located in the middle of the two horizontal stirring heads; the vertical stirring head includes a bottom rotating drive member, a bottom rotating shaft and a bottom rotating shell; the bottom rotating drive member is arranged at the bottom of the axial direction of the extension arm; the driving shaft of the bottom rotating drive member is connected to the bottom rotating shaft; the bottom rotating shell is fixedly connected to the bottom rotating shaft, and the bottom rotating shell is driven to rotate by the bottom rotating drive member; at least one layer of bottom stirring blade group is axially provided on the bottom rotating shell, each layer of the bottom stirring blade group includes at least three bottom stirring blades, and a plurality of bottom stirring blades are arranged on the outer peripheral wall of the bottom rotating shell at intervals along the circumferential direction. When the two horizontal stirring heads are arranged at 180°, the operating range of the shallow solidification mixing equipment for a single mixing is increased, and the construction efficiency can be improved. At the same time, the vertical stirring head is arranged in the middle of the horizontal stirring head, which can ensure that the original soil between the two horizontal stirring heads is well mixed, and avoids leakage mixing and discontinuity between the solidification treatment plates.

[0011] Preferably, the stirring fixed part is a fixed support, which is fixedly arranged at the lower end of the extension arm, and the first stirring rotating part includes a first rotating shaft and a first rotating shell; the first rotating shaft is transmission-connected to the rotating drive assembly through a first transmission part; the first rotating shell is fixedly connected to the first rotating shaft; a plurality of the first stirring blades are arranged on the outer peripheral wall of the first rotating shell at intervals along the circumferential direction; the second stirring rotating part includes a second rotating shaft and a second rotating shell; the second rotating shaft is transmission-connected to the rotating drive assembly through a second transmission part, the second rotating shell is fixedly connected to the second rotating shaft, and a plurality of the second stirring blades are arranged on the outer peripheral wall of the second rotating shell at intervals along the circumferential direction; the second rotating shell rotates in opposite directions to the first rotating shell, and the first stirring blade and the second stirring blade perform a bidirectional stirring action; at least two groups of free blades are evenly distributed and fixed on the circumferential side of the sleeve along the circumferential direction, and the sleeve is rotationally sleeved on the first rotating shell or the second rotating shell; the free blades are arranged between the first stirring blade and the second stirring blade, and are arranged in staggered layers with the first stirring blade and the second stirring blade. The first mixing blade and the second mixing blade on the first rotating shell and the second rotating shell of the single-sided horizontal mixing head rotate and mix in opposite directions respectively; while increasing the mixing range, the shear mixing quality of the soil in various parts can also be guaranteed.

[0012] Preferably, the bottom end of the first rotating shell is provided with a plurality of end blades arranged at intervals along the circumferential direction, and the end blades are parallel to the bottom end surface of the first rotating shell; the rotation radius of the end blades is 5-10 cm larger than the diameter of the first rotating shell; the bottom surface of the first rotating shell is provided with a cover plate; the cover plate is provided with a plurality of ridges along the diameter; the ridges protrude from the cover plate by 3-5 cm. The end blades and ridges ensure the mixing of the soil near the boundary of the mixing range during the mixing process, which is conducive to the uniformity of the mixing of the soil; the rotary drive assembly is sealed inside each mixing head through the cover plate.

[0013] Preferably, the first stirring blade is distributed on the outer peripheral wall of the first rotating shell, and the second stirring blade is distributed on the outer peripheral wall of the second rotating shell; the first stirring blade and the second stirring blade are evenly arranged in a single row or multiple rows along the axis direction of the rotating shell, and at least two are arranged in each row along the circumference of the rotating shell; the first stirring blade, the second stirring blade and the free blade each include a vertical plate and at least one horizontal plate; the horizontal plates on the first stirring blade and the second stirring blade are at an angle of 15° to 30° with the tangent direction of the rotating shell; the horizontal plate of the free blade is horizontal to the tangent direction of the rotating shell, and the horizontal plates of the first stirring blade, the second stirring blade and the free blade are arranged in staggered layers in a direction perpendicular to the surface of the rotating shell. The first stirring blade and the second stirring blade are arranged in multiple rows on the rotating shell, which can increase the construction width of the horizontal stirring head in the horizontal direction and expand the stirring range of one application. The first mixing blade, the second mixing blade and the free blade adopt a transverse plate structure with a certain angle, which can improve the mixing capacity and effect during rotary mixing and achieve sufficient mixing of the soil; the design of multiple layers of transverse plates on the first mixing blade, the second mixing blade and the free blade can increase the effective rotary mixing times and achieve high-quality mixing effect.

[0014] Preferably, the first rotating shaft is an inner rotating rod, the second rotating shaft is an outer rotating rod, the second rotating shaft is a hollow structure, and the second rotating shaft is sleeved on the outer peripheral wall of the first rotating shaft; the first rotating shaft and the second rotating shaft are coaxially arranged and can rotate relative to each other; the first rotating shaft is connected to the first rotating shell through connecting section 1, and the second rotating shaft is connected to the second rotating shell through connecting section 2; the rotary drive assembly is used to provide rotational power for the first rotating shaft and the second rotating shaft. The inner rotating rod and the outer rotating rod arranged in the horizontal mixing head are connected to the rotating shell through the connecting section to realize the relative rotation of the first mixing blade and the second mixing blade, thereby achieving the purpose of high-quality shear mixing of solidified soil.

[0015] Preferably, the conveying pipeline system includes channel 1 and channel 2; channel 1 and channel 2 can convey one or two of curing agent powder, curing agent slurry or high-pressure gas according to different construction requirements; channel 1 and channel 2 are respectively arranged on the extension arm, and the lower end of channel 1 and the lower end of channel 2 extend to the bottom of the outer side of the mixing head respectively, and are connected and merged at the bottom of the outer side of the mixing head to form a mixing area; each of the horizontal mixing heads is provided with the nozzle, and each of the nozzles is connected with the mixing area through a branch channel, and the nozzle is arranged at the bottom of the mixing fixed part of the horizontal mixing head, and sprays toward the mixing blade direction; the nozzle of the nozzle is in the shape of an inverted truncated cone, and a horizontal slit nozzle and a vertical slit nozzle are respectively provided on the nozzle, or a circular nozzle is provided at the end of the nozzle where the nozzle is closed. The above structure is more conducive to forming a better spraying effect when the solidified material is sprayed out through the slit nozzle on the truncated cone nozzle; and the use of a closed truncated cone nozzle can increase the spraying speed of the solidified material, which is conducive to spraying the solidified material into a farther soil body.

[0016] Preferably, another form of the conveying pipeline system includes channel one, channel two, an internal channel, a rotary joint and an internal rod channel; the internal channel is arranged in the mixing fixed part, and the channel one and channel two are mixed and enter the mixing fixed part of the horizontal mixing head and are connected to the internal channel, the rotary joint is installed at the upper end of the first rotating shaft, the first rotating shaft is provided with the internal rod channel, the internal rod channel is connected with the internal channel through the rotary joint, and the nozzle is fed; each horizontal mixing head is provided with two nozzles, one of which is arranged at the bottom end of the mixing fixed part on the horizontal mixing head, spraying in the direction of the mixing blade, and the other nozzle is arranged on the inner side of the outermost first mixing blade, spraying in the direction of the inner side of the horizontal mixing head, and rotating with the mixing blade during operation. When the horizontal mixing head is arranged horizontally, the lateral distance of a single mixing is large, and the structural design of two nozzles spraying in opposite directions at the root and end of a single horizontal mixing head can make the solidified material sprayed evenly within the mixing range, ensuring that the soil within the mixing range contains solidified material.

[0017] Preferably, it also includes a feeding backstage and a construction carrier; the feeding backstage is connected to the conveying pipeline system through a feeding pipe and an air supply pipe, and the feeding backstage provides curing agent and auxiliary high-pressure gas for curing and stirring; the top of the extension arm is fixedly connected to the construction carrier by passing a pin shaft through the pin hole.

[0018] Beneficial technical effects brought by the utility model:

[0019] 1) The utility model is a large-span bidirectional shallow-layer solidification mixing equipment, which introduces bidirectional mixing and free blade technology. The staggered structure between the free blade and the mixing blade and the bidirectional counter-mixing structure design can form a multi-directional shear mixing effect during the mixing process. The first mixing blade and the second mixing blade improve the mixing effect of the soil through relative rotation mixing, so that the solidification material and the soil are sheared and mixed more evenly, and the solidification strength of the foundation soil is improved.

[0020] 2) The mixing equipment in the utility model has two multi-directional mixing heads arranged horizontally, and the projected length on the horizontal plane can reach 1.8~3.0m, and the projected width can reach 0.9~1.3m, which increases the single mixing operation area, thereby improving construction efficiency and saving construction time and cost.

[0021] 3) The curing material nozzle adopts a special structure, using a slit nozzle or a contracted frustum nozzle to increase the spraying speed and distance of the curing material. When the single mixing operation area is large, a double nozzle spraying method can be used to ensure the uniformity of the curing material distribution and the overall curing and mixing effect.

[0022] 4) The multi-row and multi-layer mixing blade design allows the soil to be mixed more times at the same rotation speed, resulting in better mixing effect, further improving the quality of the overall project. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the structure of a large-span bidirectional shallow-layer solidification mixing equipment according to an embodiment of the utility model.

[0024] Figure 2 This is a front view of the large-span bidirectional shallow-layer solidification mixing equipment structure according to the second embodiment of the utility model.

[0025] Figure 3 It is a front view of the structure of a three-span bidirectional shallow-layer solidification mixing equipment according to an embodiment of the utility model.

[0026] Figure 4 It is a front view of the structure of a four-span bidirectional shallow-layer solidification mixing equipment according to an embodiment of the utility model.

[0027] Figure 5 This is a front view of a single-sided stirring head structure according to a first embodiment of the utility model.

[0028] Figure 6 This is a front view of the single-sided stirring head structure of the second embodiment of the utility model.

[0029] Figure 7 This is a front view of the single-sided stirring head structure of embodiment 3 of the present utility model.

[0030] Figure 8This is a front view of the single-sided stirring head structure of the fourth embodiment of the utility model.

[0031] Fig. 9 It is a side view of the single-sided stirring head structure of embodiments 1 and 2 of the utility model.

[0032] Fig.10 This is a side view of the single-sided stirring head structure of embodiment 3 of the present utility model.

[0033] Fig.11 This is a side view of the single-sided stirring head structure of the fourth embodiment of the utility model.

[0034] Fig.12 This is a schematic diagram of the dual-power drive structure of the utility model.

[0035] Fig.13 This is a schematic diagram of the single power drive and internal channel structure of the utility model.

[0036] Fig.14 This is a cross-sectional view of the stirring blade structure of the utility model.

[0037] Fig.15 This is a schematic diagram of the oil circuit system structure of the utility model.

[0038] Fig.16 This is a schematic diagram of the double nozzle structure of the utility model.

[0039] Fig.17 This is a schematic diagram of the nozzle structure of the injection pipeline of the utility model.

[0040] Fig.18 This is a construction schematic diagram of the utility model.

[0041] Description of reference numerals:

[0042] 1. Extension arm; 12. Fixed support; 2. Vertical mixing head; 21. Bottom mixing blade; 22. Bottom rotating shaft; 23. Bottom rotating shell; 3. Horizontal mixing head; 311. First mixing blade; 312. Second mixing blade; 32. Free blade; 321. Bushing; 331. Vertical plate; 332. Horizontal plate; 333. Reinforcement rib; 34. End cutter head; 351. First rotating shaft; 352. Second rotating shaft; 361. First rotating shell; 3612. Connection section 1; 362. Second rotating shell; 3622. Connection section 2; 37. Cover plate; 38. Edge plate; 39. Hydraulic motor; 391. Main Driving gear; 392, driven gear; 393, reversing gear; 4, oil circuit system; 41, oil inlet valve; 42, oil outlet valve; 43, control valve; 44, hydraulic flow meter; 451, oil inlet pipe; 452, oil outlet pipe; 461, first drive oil pipe; 462, second drive oil pipe; 5, delivery pipeline system; 51, channel one; 52, channel two; 53, internal channel; 54, inner rod channel; 55, nozzle; 551, nozzle; 56, rotary joint; 57, horizontal slit nozzle; 58, vertical slit nozzle; 59, circular nozzle; 6, feeding background; 61, feeding pipe; 62, air supply pipe; 7, construction carrier. DETAILED DESCRIPTION

[0043] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0044] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0045] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Embodiment 1

[0047] Combine the following Figure 1 , Figure 5 , Fig. 9 , Fig.12 , Figure 14~Figure 15 and Figure 17-18 An implementation form of the utility model is further described.

[0048] like Figure 1 , Figure 5 and Fig. 9As shown, the large-span bidirectional shallow-layer solidification mixing equipment in this embodiment includes an extension arm 1, a vertical mixing head 2, two horizontal mixing heads 3, an oil circuit system 4 and a conveying pipeline system 5; the two horizontal mixing heads 3 are arranged at the bottom end of the extension arm 1, and the two horizontal mixing heads 3 are symmetrically arranged on both sides of the vertical mixing head 2 in the direction of the axis of the vertical extension arm 1. The vertical mixing head 2 is arranged at the bottom end of the extension arm 1, and the vertical mixing head 2 is in the same direction as the axis of the extension arm 1 and is located between the two horizontal mixing heads 3. The vertical mixing head 2 includes a bottom rotating drive member, a bottom rotating shaft 22 and a bottom rotating shell 23; the bottom rotating drive member is a hydraulic motor 39, and the bottom rotating drive member is arranged in the bottom end of the extension arm 1; the driving shaft of the bottom rotating drive member is connected to the bottom rotating shaft 22; the bottom rotating shell 23 is fixedly connected to the bottom rotating shaft 22, and drives the bottom rotating shell 23 to rotate through the bottom rotating drive member; a layer of bottom mixing blade group is axially arranged on the bottom rotating shell 23, and the bottom mixing blade group includes four bottom mixing blades 21, and the four bottom mixing blades 21 are arranged at intervals along the circumferential direction on the outer peripheral wall of the bottom rotating shell 23. The vertical mixing head 2 is arranged in the middle of the horizontal mixing head 3, which can ensure that the original soil between the two horizontal mixing heads 3 is well mixed, avoiding leakage and discontinuity between the solidification treatment plates. Each horizontal stirring head 3 includes a stirring fixed part, a rotation drive component, a first stirring rotating part, a second stirring rotating part, a plurality of first stirring blades 311, a plurality of second stirring blades 312 and a plurality of free blades 32; the stirring fixed part is arranged at the lower end of the extension arm 1; the rotation drive component is arranged inside the stirring fixed part, and the rotation drive component provides power output through a single hydraulic motor 39 or a double hydraulic motor 39 to realize bidirectional driving of the first stirring blade 311 and the second stirring blade 312, and the rotation drive component is respectively connected to the first stirring rotating part and the second stirring rotating part, and the stirring fixed part, the first stirring rotating part and the second stirring rotating part are coaxially arranged; the rotation drive component is used to drive the first stirring rotating part and the second stirring rotating part to rotate in opposite directions; a plurality of first stirring blades 311 are arranged on the outer periphery of the first stirring rotating part at intervals along the circumferential direction, and a plurality of second stirring blades 312 are arranged on the outer periphery of the second stirring rotating part at intervals along the circumferential direction. In this embodiment, the first stirring blades 311 and the second stirring blades 312 are arranged in a row along the axis direction of the first rotating shell 361 and the second rotating shell 362, respectively, and three groups are evenly arranged along the circumference of the rotating shell; a plurality of free blades 32 are rotatably connected to the first stirring rotating part or the second stirring rotating part through the shaft sleeve 321, and the free blades 32 are located between the first stirring blades 311 and the second stirring blades 312, and the height of the free blades 32 is lower than the stirring blades, and the free blades 32, the first stirring blades 311 and the second stirring blades 312 are staggered to achieve the effect of mutually cutting the soil. At least one nozzle 55 is arranged on the horizontal stirring head 3.The oil circuit system 4 provides power for the rotary drive assembly to drive the transverse mixing head 3 to perform a rotary mixing action, and at the same time converts the number of rotations through the amount of oil flowing through and records it; the delivery pipeline system 5 is connected to the nozzle 55, and is used to arbitrarily switch the delivery medium and make the delivery medium spray out from the nozzle 55. The equipment forms a new mixing structure by placing two transverse mixing heads 3 at a certain angle. The mixing blades of the transverse mixing head 3 can achieve relative shear mixing in two directions to achieve multi-dimensional mixing of the soil. At the same time, the staggered structure design between the free blade 32 and the rotating mixing blade achieves a staggered mixing effect in a local area. The delivery pipeline can transport solidified materials of different media, and the multiple nozzle 55 structural design can evenly spray the solidified materials into the mixing area. In addition, the monitoring and control of the rotation speed of the mixing head can make the soil mixing and solidification more uniform and the quality more reliable.

[0049] like Figure 5 and Fig. 9 As shown, the stirring fixed part is a fixed support 12, which is fixedly arranged at the lower end of the extension arm 1, and the first stirring rotating part includes a first rotating shaft 351 and a first rotating shell 361; the first rotating shaft 351 is connected to the rotating drive assembly through a first transmission part; the first rotating shell 361 is fixedly connected to the first rotating shaft 351; a plurality of first stirring blades 311 are arranged on the outer peripheral wall of the first rotating shell 361 at intervals along the circumferential direction; the second stirring rotating part includes a second rotating shaft 352 and a second rotating shell 362; the second rotating shaft 352 is connected to the rotating drive assembly through a second transmission part, and the second rotating shell 362 is fixedly connected to the second rotating shaft 351. On the rotating shaft 352, a plurality of second stirring blades 312 are arranged at intervals along the circumferential direction on the outer peripheral wall of the second rotating shell 362; the second rotating shell 362 rotates in opposite directions to the first rotating shell 361, and the first stirring blade 311 and the second stirring blade 312 perform a bidirectional stirring action; at least two groups of free blades 32 are evenly distributed and fixed on the circumferential side of the sleeve 321 along the circumferential direction, and the sleeve 321 is rotatably sleeved on the first rotating shell 361 or the second rotating shell 362; the free blades 32 are arranged between the first stirring blade 311 and the second stirring blade 312, and are arranged in staggered layers with the first stirring blade 311 and the second stirring blade 312. The first stirring blade 311 and the second stirring blade 312 rotate and stir in opposite directions respectively, which can increase the stirring range while ensuring the shear stirring quality of the soil in each part.

[0050] like Figure 5 , Fig.14 As shown, the first stirring blade 311 and the second stirring blade 312 both include a vertical plate 331 and a horizontal plate 332, which are fixed with the aid of reinforcing ribs 333. The horizontal plate 332 of the stirring blade has an angle of 20° with the tangent direction of the circular rotating shell. Each stirring blade is provided with a layer of horizontal plates 332, and adjacent horizontal plates 332 are staggered.

[0051] like Figure 5 and Fig. 9 As shown, the free blades 32 in this embodiment are arranged on a shaft sleeve 321 rotatably connected to the second rotating shell 362, and a total of three groups are arranged in one row. The free blades 32 are composed of a transverse plate 332 and a vertical plate 331, and are fixed with the aid of reinforcing ribs 333. The transverse plate 332 of the free blades 32 is horizontal to the tangent direction of the circular rotating shell. A layer of transverse plates 332 is arranged at the top of each group of free blades 32. The transverse plates 332 of the free blades 32 are lower than the transverse plates 332 of the mixing blades. The free blades 32 do not rotate during the mixing process, but can form a mutual shear area with the mixing blades to increase the mixing of the soil.

[0052] like Figure 5 and Fig. 9 As shown, four groups of end blades 34 are arranged at intervals along the circumferential direction at the bottom end of the first rotating shell 361, and the end blades 34 are parallel to the bottom end surface of the first rotating shell 361; the rotation radius of the end blades 34 is 5 cm greater than the diameter of the first rotating shell 361; a cover plate 37 is provided on the bottom surface of the first rotating shell 361; two ridges 38 are arranged perpendicularly on the cover plate 37; the ridges 38 protrude 5 cm from the surface of the cover plate 37. Both the ridges 38 and the end blades 34 play a role in assisting stirring during the operation.

[0053] like Fig.12 As shown, in this embodiment, in order to achieve the stirring of the first stirring blade 311 and the second stirring blade 312 in different directions, the first rotating shaft 351 is an inner rotating rod, the second rotating shaft 352 is an outer rotating rod, the second rotating shaft 352 is a hollow structure, and the second rotating shaft 352 is sleeved on the outer peripheral wall of the first rotating shaft 351; the first rotating shaft 351 and the second rotating shaft 352 are coaxially arranged and can rotate relative to each other; the first rotating shaft 351 is connected to the first rotating shell 361 through the connecting section 1 3612, and the second rotating shaft 352 is connected to the second rotating shell 362 through the connecting section 2 3622; the rotating drive assembly is used to provide rotational power for the first rotating shaft 351 and the second rotating shaft 352. The above structure realizes the reverse rotation of the first stirring blade 311 and the second stirring blade 312 through the connection of the connecting section and the rotating shell, thereby achieving the purpose of staggered shear stirring. In this embodiment, two hydraulic motors 39 are used in a single horizontal mixing head 3 to respectively drive the first rotating shaft 351 and the second rotating shaft 352 to rotate, and the driving gears 391 on the driving shafts of the two hydraulic motors 39 are respectively engaged with the driven gears 392 on the first rotating shaft 351 and the second rotating shaft 352, so that the two rotate in opposite directions, thereby achieving the purpose of bidirectional mixing.

[0054] like Fig.15As shown, the oil circuit system 4 includes an oil inlet valve 41, an oil outlet valve 42, a control valve 43 and a hydraulic flow meter 44; the oil inlet valve 41 and the oil outlet valve 42 are respectively arranged on the extension arm 1, the oil inlet valve 41 is connected to the oil inlet part of the control valve 43 through an oil inlet pipe 451, the hydraulic flow meter 44 is connected to the port 1 of the control valve 43 through an oil pipe, and the hydraulic flow meter 44 is connected to the three hydraulic motors 39 through a first drive oil pipe 461, the three hydraulic motors 39 are connected to the port 2 of the control valve 43 through an oil pipe through a second drive oil pipe 462, and the oil outlet of the control valve 43 is connected to the oil outlet valve 42 through an oil outlet pipe 452. The above structure is responsible for the circulation of the hydraulic system oil circuit through the oil inlet pipe 451 and the oil outlet pipe 452, and uses the control valve 43 to change the inlet and outlet oil directions and thus change the stirring direction of the stirring head. The first drive oil pipe 461 and the second drive oil pipe 462 are connected to the hydraulic motor 39 at the end of the oil circuit system 4, wherein the hydraulic flow meter 44 can convert the rotation speed of the stirring head through the flow change of the hydraulic oil, and adjust the up and down operation time by real-time monitoring of the stirring head rotation speed, thereby ensuring that the mixing times of the curing agent and the soil meet the design requirements.

[0055] like Figure 1 and Figure 5 As shown, in this embodiment, the conveying pipeline system 5 includes channel one 51 and channel two 52. Channel one 51 and channel two 52 can be used to convey one or more of curing agent powder, curing agent slurry or high-pressure gas according to different construction requirements. The high-pressure gas can reduce the stirring resistance during stirring, and also help to evenly spread the curing agent. Channel two 52 is connected to the air supply pipe 62 of the external feeding backstage 6, which is responsible for transporting auxiliary high-pressure gas to assist stirring; the lower ends of the two channels extend to the bottom of the outer side of the horizontal stirring head 3 respectively, and are connected and merged at the bottom of the outer side of the horizontal stirring head 3 to form a mixing area 50; each horizontal stirring head 3 is provided with a nozzle 55, and each nozzle 55 is connected to the mixing area 50 through a branch channel. The nozzle 55 is arranged at the bottom end of the fixed support 12, and the horizontal stirring head 3 and the vertical stirring head 2 are at an angle position, and spray in the direction of the stirring blade. As shown Fig.17 As shown in (a), the nozzle head 551 of the nozzle 55 is in the shape of an inverted truncated cone, and a horizontal slit-shaped nozzle 57 and a vertical slit-shaped nozzle 58 are opened on the surface of the nozzle head 551.

[0056] like Fig.18 As shown, it also includes a feeding backstage 6 and a construction carrier 7, which are connected to the conveying pipeline system 5 through a feeding pipe 61 and an air supply pipe 62. The feeding backstage 6 provides curing agent and auxiliary high-pressure gas for curing and stirring; the top of the extension arm 1 is fixedly connected to the construction carrier 7 by passing a pin shaft through the pin hole.

[0057] like Fig.18 As shown, the construction method of the large-span bidirectional shallow layer solidification mixing equipment in this embodiment includes the following steps:

[0058] (a) Before construction, the construction site shall be marked out and divided into solidification treatment areas, and high and low sections shall be leveled for construction.

[0059] (b) The top of the extension arm 1 of the large-span bidirectional shallow layer solidification mixing equipment is connected to an excavator or other construction carrier equipment 7, the various structures in the oil system 4 are connected in sequence and connected to the hydraulic pump in the construction carrier 7 equipment, and the channel in the conveying pipeline system 5 is connected to the feeding backstage 6 through the feeding pipe 61 and the air supply pipe 62, so as to provide solidification materials and auxiliary high-pressure gas for solidification mixing.

[0060] (c) After the machine is in place, the material supply backstage 6 delivers the curing agent slurry or dry powder to the mixing equipment through the pipeline. At the same time, the air supply pipe 62 can also provide high-pressure gas to assist the injection of the curing material. When the curing material is delivered to the mixing head, the soil mixing operation begins.

[0061] (d) The extension arm 1 of the mixing equipment is vertically inserted into the in-situ soil for shear mixing. The first mixing blade 311, the second mixing blade 312 and the free blade 32 form a mutual shear mixing action and effect; the vertical mixing head 2 mixes the soil between the two horizontal mixing heads 3; the nozzles 55 at different positions uniformly and stably transport the solidified material into the mixed soil; when the extension arm 1 reaches the designed solidification depth, in order to ensure the uniformity of the mixing of the bottom solidified soil, it is necessary to stay at the bottom for a short time for mixing and then lift and mix until the mixing head is raised to the surface to complete the mixing operation.

[0062] (e) The extension arm 1 of the mixing equipment is moved to the next working position, and step (d) is repeated to carry out the construction. During the construction, the overlap width of the two working areas is ensured to be not less than 5 cm.

[0063] (f) After the construction of the construction block is completed, the solidified area shall be rolled and leveled to improve the effect of the solidified soil reinforcement treatment.

[0064] Embodiment 2

[0065] Combine the following Figure 2 , Figure 6 , Fig. 9 , Fig.13 , Fig.14 , Fig.17 (b) Fig.18 The second embodiment of the present invention is further described.

[0066] The large-span bidirectional shallow-layer solidification stirring device used in this embodiment is similar to that in the first embodiment, except that:

[0067] In this embodiment, the bottom end of the extension arm 1 of the large-span bidirectional shallow layer solidification mixing device is not provided with a vertical mixing head 2. Figure 2 , Figure 6As shown, the two transverse stirring heads 3 are arranged symmetrically at an angle of 130°; the horizontal projection (i.e., the single operation range) of the large-span bidirectional shallow solidification stirring device in this embodiment is 1800mm×950mm; Figure 6 As shown, the end blade heads 34 protrude 10 cm from the surface of the first rotating shell 361, and the end blade heads 34 are evenly distributed in four groups on the circular edge of the end of the horizontal stirring head 3; Figure 6 As shown, two ridges 38 are arranged perpendicularly to each other on the cover plate 37, and the ridges 38 protrude 3 cm from the surface of the cover plate 37; Fig.15 As shown, the angle between the horizontal plate 332 of the first stirring blade 311 and the second stirring blade 312 and the tangent direction of the circular rotating shell is 15°; Fig.13 As shown, since the single stirring operation range in this embodiment is relatively small, the horizontal stirring head 3 adopts a single hydraulic motor 39 to drive the first rotating shaft 351 and the second rotating shaft 352 to rotate. The main shaft of the hydraulic motor 39 has two driving gears 391, one of which is directly meshed with the driven gear 392 on the second rotating shaft 352, and the other driving gear 391 is meshed with the driven gear 392 on the first rotating shaft 351 through the reversing gear 393, thereby achieving the function of bidirectional stirring; as shown in FIG. Fig.17 As shown in (b), the nozzle 55 in this embodiment has a circular nozzle 59 at its end.

[0068] The construction method in this embodiment is as follows Fig.18 As shown, it is the same as the first embodiment.

[0069] Embodiment 3

[0070] Combine the following Figure 3 , Figure 7 , Fig.10 , Figures 12 to 18 The third implementation mode of the present utility model is further described.

[0071] The large-span bidirectional shallow-layer solidification stirring device used in this embodiment is similar to that in the first embodiment, except that:

[0072] like Figure 3 As shown, the projection size (ie, single operation range) of the large-span bidirectional shallow-layer solidification mixing equipment in this embodiment is 2500 mm×1050 mm.

[0073] like Figure 3 , Figure 7 and Fig.10As shown, the bottom stirring blades 21 on the vertical stirring head 2 are arranged in a single layer, and 5 groups of blades are arranged in each layer; the first stirring blades 311 and the second stirring blades 312 are respectively arranged in two rows along the axial direction of the first rotating shell 361 and the second rotating shell 362, and two groups are symmetrically arranged in each row along the circumference of the rotating shell, and the blades in the two rows are staggered; no free blades 32 are arranged between the first stirring blades 311 and the second stirring blades 312, and the end blades 34 protrude 6 cm from the surface of the first rotating shell 361 and are evenly distributed in two groups on the circular edge at the end of the horizontal stirring head 3; the outermost side of the horizontal stirring head 3 is sealed by a cover plate 37, and two edges 38 are arranged perpendicular to each other on the cover plate 37, and the edges 38 protrude 5 cm from the surface of the cover plate 37; the edges 38 and the end blades 34 both play a role in auxiliary stirring during operation.

[0074] like Figure 3 , Figure 7 , Fig.10 , Fig.15 As shown, the first stirring blade 311 and the second stirring blade 312 both include a vertical plate 331 and a horizontal plate 332, which are fixed by reinforcing ribs 333. The horizontal plate 332 of the stirring blade is at an angle of 30° to the tangent direction of the circular rotating shell, and each stirring blade is provided with a layer of horizontal plates 332. Adjacent horizontal plates 332 are arranged in staggered layers.

[0075] Since the single stirring operation area in this embodiment is relatively large, the output power requirement is relatively high. Fig.12 As shown, the single transverse stirring head 3 uses two hydraulic motors 39 to respectively drive the first rotating shaft 351 and the second rotating shaft 352 to rotate, as in the first embodiment, and the transmission structure is the same as that in the first embodiment.

[0076] like Fig.15 As shown, the arrangement and function of the oil inlet valve 41, the oil outlet valve 42, the control valve 43, the hydraulic flow meter 44 and the corresponding oil pipes in the oil circuit system 4 of this embodiment are the same as those in the first embodiment.

[0077] like Figure 3 , Figure 7 , Fig.13As shown, in this embodiment, the conveying pipeline system includes channel one 51, channel two 52, an internal channel 53, a rotary joint 56 and an inner rod channel 54; channel one 51 and channel two 52 can convey one or two of curing agent powder, curing agent slurry or high-pressure gas according to different construction requirements; the internal channel 53 is arranged in the fixed support 12, and channel one 51 and channel two 52 are mixed and enter the fixed support 12 of the horizontal stirring head 3 and are connected to the internal channel 53, the rotary joint 56 is installed at the upper end of the first rotating shaft 351, and the inner rod channel 54 is arranged inside the first rotating shaft 351, and the inner rod channel 54 is connected with the internal channel 53 through the rotary joint 56, and the nozzle 55 is fed; two nozzles 55 are arranged on each horizontal stirring head 3, one of which is arranged at the bottom end of the fixed support 12 on the horizontal stirring head 3, and sprays toward the stirring blade, and the other nozzle 55 is arranged on the inner side of the outermost first stirring blade 311, sprays toward the inner side of the horizontal stirring head 3, and rotates with the stirring blade during operation. The nozzle 55 of the nozzle 55 in this embodiment is in the shape of a truncated cone, and a horizontal slit-shaped nozzle 57 and a vertical slit-shaped nozzle 58 are provided on the surface of the nozzle 551, which is conducive to the atomization of the sprayed solidified material and achieving a corresponding spray distance.

[0078] The construction method in this embodiment is the same as that in the first embodiment and will not be described in detail.

[0079] Embodiment 4

[0080] Combine the following Figure 4 , Figure 8 , Fig.11 , Fig.12 , Figure 14~Figure 18 The fourth embodiment of the present invention is further described.

[0081] The large-span bidirectional shallow layer solidification stirring device used in this embodiment is similar to that in the third embodiment, except that:

[0082] In this embodiment, the bottom end of the extension arm 1 of the large-span bidirectional shallow layer solidification mixing device is not provided with a vertical mixing head 2. Figure 4 , Figure 8 As shown, the two transverse stirring heads 3 are symmetrically arranged at 180° on both sides of the extension arm 1; the projection size (i.e., the single operation range) of the large-span bidirectional shallow curing stirring device in this embodiment is 2400mm×1250mm; Figure 8 , Fig.11 As shown, the end blade 34 protrudes 8 cm from the surface of the first rotating shell 361 and is evenly distributed in three groups on the circular edge of the end of the horizontal stirring head 3. Two ridges 38 are arranged perpendicularly to each other on the cover plate 37, and the ridges 38 protrude 4 cm from the surface of the cover plate 37. Fig.14As shown, the angle between the horizontal plate 332 of the first stirring blade 311 and the second stirring blade 312 and the tangent direction of the circular rotating shell is 25°; Figure 8 As shown, the first stirring blades 311 and the second stirring blades 312 are respectively arranged in two rows along the axis direction of the first rotating shell 361 and the second rotating shell 362, and each row of stirring blades is symmetrically arranged in two groups along the circumference of the rotating shell, and each stirring blade is provided with two layers of transverse plates 332, and the transverse plates 332 on adjacent stirring blades are arranged in staggered layers; Fig.12 As shown, in this embodiment, two hydraulic motors 39 are used for driving, and the structure is the same as that of the third embodiment; Fig.16 , 17 As shown in (b), the positions of the two nozzles 55 in this embodiment are the same as those in the third embodiment, but the ends of the nozzles 551 of the two nozzles 55 have circular nozzles 59.

[0083] The construction method in this embodiment is the same as that in the above-mentioned embodiment 1 and will not be described in detail.

[0084] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0085] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A large-span bidirectional shallow layer solidification mixing equipment, characterized in that: The invention comprises an extension arm (1), a transverse stirring head (3) and a conveying pipeline system (5); the transverse stirring heads (3) are two and are arranged at a certain angle at the lower end of the extension arm (1); the transverse stirring head (3) comprises a stirring fixed part, a rotation drive component, a first stirring rotating part, a second stirring rotating part, a plurality of first stirring blades (311), a plurality of second stirring blades (312) and a plurality of free blades (32); the stirring fixed part is arranged at the lower end of the extension arm (1); the rotation drive component is arranged inside the stirring fixed part, the rotation drive component is connected to the first stirring rotating part and the second stirring rotating part respectively, and the stirring fixed part, the first stirring rotating part and the second stirring rotating part are arranged coaxially; the rotation drive component is used to drive the first stirring rotating part and the second stirring rotating part to rotate in opposite directions; the plurality of second stirring blades (312) are arranged in a rotation direction. A stirring blade (311) is arranged at intervals along the circumferential direction on the outer periphery of the first stirring rotating part, a plurality of the second stirring blades (312) are arranged at intervals along the circumferential direction on the outer periphery of the second stirring rotating part, a plurality of the free blades (32) are rotatably connected to the first stirring rotating part or the second stirring rotating part via a shaft sleeve (321), and the free blade (32) is located between the first stirring blade (311) and the second stirring blade (312), and the free blade (32), the first stirring blade (311) and the second stirring blade (312) are arranged in a staggered manner to achieve the effect of mutually cutting the soil body; at least one nozzle (55) is arranged on the transverse stirring head (3); the conveying pipeline system (5) is connected to the nozzle (55) and is used to arbitrarily switch the conveying medium and make the conveying medium spray out from the nozzle (55).

2. The large-span bidirectional shallow layer solidification mixing equipment according to claim 1 is characterized in that: A vertical stirring head (2) is also provided at the axial bottom end of the extension arm (1), and the vertical stirring head (2) is located between the two horizontal stirring heads (3); the vertical stirring head (2) comprises a bottom rotating driving member, a bottom rotating shaft (22) and a bottom rotating shell (23); the bottom rotating driving member is provided at the axial bottom end of the extension arm (1); the driving shaft of the bottom rotating driving member is connected to the bottom rotating shaft (22); the bottom rotating shell (23) is fixedly connected to the bottom rotating shaft (22), and the bottom rotating shell (23) is driven to rotate by the bottom rotating driving member; at least one layer of bottom stirring blade group is axially provided on the bottom rotating shell (23), each layer of the bottom stirring blade group comprises at least three bottom stirring blades (21), and the plurality of bottom stirring blades (21) are circumferentially spaced and arranged on the outer peripheral wall of the bottom rotating shell (23).

3. The large-span bidirectional shallow layer solidification mixing equipment according to claim 1 is characterized in that: The stirring fixed part is a fixed support (12), and the fixed support (12) is fixedly arranged at the lower end of the extension arm (1); the first stirring rotating part comprises a first rotating shaft (351) and a first rotating shell (361); the first rotating shaft (351) is transmission-connected to the rotating drive assembly through a first transmission part; the first rotating shell (361) is fixedly connected to the first rotating shaft (351); a plurality of the first stirring blades (311) are arranged on the outer peripheral wall of the first rotating shell (361) in a circumferentially spaced arrangement; the second stirring rotating part comprises a second rotating shaft (352) and a second rotating shell (362); the second rotating shaft (352) is transmission-connected to the rotating drive assembly through a second transmission part, and the second rotating shell (362) is fixedly connected to the second rotating shaft (351); On the rotating shaft (352), a plurality of the second stirring blades (312) are arranged at intervals along the circumferential direction on the outer peripheral wall of the second rotating shell (362); the second rotating shell (362) rotates in opposite directions to the first rotating shell (361), and the first stirring blade (311) and the second stirring blade (312) perform a bidirectional stirring action; at least two groups of the free blades (32) are evenly distributed along the circumferential direction and fixed on the circumferential side of the shaft sleeve (321), and the shaft sleeve (321) is rotatably sleeved on the first rotating shell (361) or the second rotating shell (362); the free blades (32) are arranged between the first stirring blade (311) and the second stirring blade (312), and are arranged in staggered layers with the first stirring blade (311) and the second stirring blade (312).

4. The large-span bidirectional shallow layer solidification mixing equipment according to claim 3 is characterized in that: A plurality of end blades (34) are arranged at intervals along the circumferential direction at the bottom end of the first rotating shell (361), and the end blades (34) are parallel to and attached to the bottom end surface of the first rotating shell (361); the rotation radius of the end blades (34) is 5 to 10 cm greater than the diameter of the first rotating shell (361); a cover plate (37) is arranged on the bottom surface of the first rotating shell (361); a plurality of ridges (38) are arranged along the diameter of the cover plate (37); and the ridges (38) protrude from the cover plate (37) by 3 to 5 cm.

5. The large-span bidirectional shallow layer solidification mixing equipment according to claim 3 is characterized in that: The first stirring blade (311) is distributed on the outer peripheral wall of the first rotating shell (361), and the second stirring blade (312) is distributed on the outer peripheral wall of the second rotating shell (362); the first stirring blade (311) and the second stirring blade (312) are evenly arranged in a single row or multiple rows along the axial direction of the rotating shell, and at least two stirring blades are arranged in each row along the circumference of the rotating shell; the first stirring blade (311), the second stirring blade (312) and the free blade (32) each include a vertical plate (331) and at least one horizontal plate (332); the horizontal plate (332) on the first stirring blade (311) and the second stirring blade (312) is at an angle of 15° to 30° with the tangent direction of the rotating shell; the horizontal plate (332) of the free blade (32) is horizontal to the tangent direction of the rotating shell, and the horizontal plates (332) of the first stirring blade (311), the second stirring blade (312) and the free blade (32) are staggered in a direction perpendicular to the surface of the rotating shell.

6. The large-span bidirectional shallow layer solidification mixing equipment according to claim 3 is characterized in that: The first rotating shaft (351) is an inner rotating rod, the second rotating shaft (352) is an outer rotating rod, the second rotating shaft (352) is a hollow structure, and the second rotating shaft (352) is sleeved on the outer peripheral wall of the first rotating shaft (351); the first rotating shaft (351) and the second rotating shaft (352) are coaxially arranged and can rotate relative to each other; the first rotating shaft (351) is connected to the first rotating shell (361) through the first connecting section (3612), and the second rotating shaft (352) is connected to the second rotating shell (362) through the second connecting section (3622); the rotating drive assembly is used to provide rotating power for the first rotating shaft (351) and the second rotating shaft (352).

7. The large-span bidirectional shallow layer solidification mixing equipment according to claim 3 is characterized in that: The conveying pipeline system (5) comprises a channel 1 (51) and a channel 2 (52); the channel 1 (51) and the channel 2 (52) can convey one or both of curing agent powder, curing agent slurry or high-pressure gas according to different construction requirements; the channel 1 (51) and the channel 2 (52) are respectively arranged on the extension arm (1), and the lower end of the channel 1 (51) and the lower end of the channel 2 (52) respectively extend to the bottom of the outer side of the stirring head (3), and are connected and merged at the bottom of the outer side of the stirring head (3) to form a mixing area (50); The nozzle (55) is provided on each of the transverse stirring heads (3); each of the nozzles (55) is connected to the mixing area (50) via a branch channel; the nozzle (55) is provided at the bottom end of the stirring fixed portion of the transverse stirring head (3) and sprays in the direction of the stirring blade; the nozzle (551) of the nozzle (55) is in the shape of an inverted truncated cone; the nozzle (551) is provided with a transverse slit-shaped nozzle (57) and a vertical slit-shaped nozzle (58), or a circular nozzle (59) is provided at the end of the nozzle (551) where the nozzle (551) closes.

8. The large-span bidirectional shallow-layer solidification mixing equipment according to claim 7 is characterized in that: Another form of the conveying pipeline system (5) comprises a first channel (51), a second channel (52), an internal channel (53), a rotary joint (56) and an internal rod channel (54); the internal channel (53) is arranged in the stirring fixed part, and the first channel (51) and the second channel (52) are mixed and enter the stirring fixed part of the horizontal stirring head (3) and are connected to the internal channel (53); the rotary joint (56) is installed at the upper end of the first rotating shaft (351), and the first rotating shaft (351) is provided with the internal rod channel (54) ), the inner rod channel (54) is connected to the internal channel (53) through the rotating joint (56), and the nozzle (55) is supplied with material; each transverse stirring head (3) is provided with two nozzles (55), one of which is arranged at the bottom end of the stirring fixing part on the transverse stirring head (3) and sprays in the direction of the stirring blade, and the other nozzle (55) is arranged on the inner side of the outermost first stirring blade (311), sprays in the direction of the inner side of the transverse stirring head (3), and rotates with the stirring blade during operation.

9. The large-span bidirectional shallow-layer solidification mixing equipment according to claim 1, characterized in that: It also includes a material supply backstage (6) and a construction carrier (7); the material supply backstage (6) is connected to the conveying pipeline system (5) via a material supply pipe (61) and an air supply pipe (62); the material supply backstage (6) provides curing agent and auxiliary high-pressure gas for curing and stirring; the top of the extension arm (1) is fixedly connected to the construction carrier (7) by a pin shaft passing through a pin hole.

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